Add changelog for v0.3.2 (#86)

* Add changelog for v0.3.2

* caps

.github/workflows/test_and_deploy.yml

@@ -47,6 +47,16 @@ jobs:
           - python-version: 3.9
             platform: macos-11.0
             backend: pyqt6
+          # py3.10
+          - python-version: "3.10"
+            platform: ubuntu-latest
+            backend: pyside6
+          - python-version: "3.10"
+            platform: ubuntu-latest
+            backend: pyqt5
+          - python-version: "3.10"
+            platform: ubuntu-latest
+            backend: pyqt6
 
           # big sur, 3.9
           - python-version: 3.9
@@ -60,12 +70,18 @@ jobs:
           - python-version: 3.8
             platform: ubuntu-18.04
             backend: pyside2
-          - python-version: 3.6
-            platform: ubuntu-16.04
-            backend: pyqt5
-          - python-version: 3.6
-            platform: windows-2016
-            backend: pyqt5
+
+          # legacy Qt
+          - python-version: 3.7
+            platform: ubuntu-latest
+            backend: pyqt512
+          - python-version: 3.7
+            platform: ubuntu-latest
+            backend: pyqt513
+          - python-version: 3.7
+            platform: ubuntu-latest
+            backend: pyqt514
+
     steps:
       - uses: actions/checkout@v2
 
@@ -74,12 +90,8 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
-      - name: Install Linux libraries
-        if: runner.os == 'Linux'
-        run: |
-          sudo apt-get install -y libdbus-1-3 libxkbcommon-x11-0 libxcb-icccm4 \
-            libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 \
-            libxcb-xinerama0 libxcb-xfixes0
+      - uses: tlambert03/setup-qt-libs@v1
+
       - name: Linux opengl
         if: runner.os == 'Linux' && ( matrix.backend == 'pyside6' || matrix.backend == 'pyqt6' )
         run: sudo apt-get install -y libopengl0 libegl1-mesa libxcb-xinput0
@@ -87,10 +99,13 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install setuptools tox tox-gh-actions
+          python -m pip install setuptools tox tox-gh-actions
 
       - name: Test with tox
-        run: tox
+        uses: GabrielBB/xvfb-action@v1
+        timeout-minutes: 3
+        with:
+          run: python -m tox
         env:
           PLATFORM: ${{ matrix.platform }}
           BACKEND: ${{ matrix.backend }}
@@ -102,15 +117,15 @@ jobs:
         if: matrix.screenshot
         run: pip install . ${{ matrix.backend }}
 
-      - name: Screenshots
+      - name: Screenshots (Linux)
         if: runner.os == 'Linux' && matrix.screenshot
         uses: GabrielBB/xvfb-action@v1
         with:
-          run: python examples/demo_widget.py
+          run: python examples/demo_widget.py -snap
 
-      - name: Screenshots
+      - name: Screenshots (macOS/Win)
         if: runner.os != 'Linux' && matrix.screenshot
-        run: python examples/demo_widget.py
+        run: python examples/demo_widget.py -snap
 
       - uses: actions/upload-artifact@v2
         if: matrix.screenshot
@@ -118,14 +133,79 @@ jobs:
           name: screenshots ${{ runner.os }}
           path: screenshots
 
+  test_old_qtpy:
+    name: qtpy minreq
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: tlambert03/setup-qt-libs@v1
+      - uses: actions/setup-python@v2
+        with:
+          python-version: '3.8'
+
+      - name: install
+        run: |
+          python -m pip install -U pip
+          python -m pip install -e .[testing,pyqt5]
+          python -m pip install qtpy==1.1.0 typing-extensions==3.10.0.0
+
+      - name: Test napari magicgui
+        uses: GabrielBB/xvfb-action@v1
+        with:
+          run: python -m pytest --color=yes
+
+
+  test_napari:
+    name: napari tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          path: superqt
+
+      - uses: actions/checkout@v2
+        with:
+          repository: napari/napari
+          path: napari
+          fetch-depth: 2
+
+      - uses: tlambert03/setup-qt-libs@v1
+      - uses: actions/setup-python@v2
+        with:
+          python-version: '3.9'
+
+      - name: install
+        run: |
+          python -m pip install -U pip
+          python -m pip install -e ./napari[testing,pyqt5]
+          python -m pip install -e ./superqt
+
+      - name: Test napari magicgui
+        uses: GabrielBB/xvfb-action@v1
+        with:
+          run: python -m pytest --color=yes napari/napari/_qt
+
+  check_manifest:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+        with:
+          python-version: "3.x"
+      - name: Check manifest
+        run: |
+          python -m pip install --upgrade pip
+          pip install check-manifest
+          check-manifest
 
   deploy:
     # this will run when you have tagged a commit, starting with "v*"
     # and requires that you have put your twine API key in your
     # github secrets (see readme for details)
-    needs: [test]
+    needs: [test, check_manifest]
+    if: ${{ github.repository == 'napari/superqt' && contains(github.ref, 'tags') }}
     runs-on: ubuntu-latest
-    if: contains(github.ref, 'tags')
     steps:
       - uses: actions/checkout@v2
       - name: Set up Python
@@ -135,12 +215,17 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install -U setuptools setuptools_scm wheel twine
+          pip install build twine
       - name: Build and publish
         env:
           TWINE_USERNAME: __token__
           TWINE_PASSWORD: ${{ secrets.TWINE_API_KEY }}
         run: |
           git tag
-          python setup.py sdist bdist_wheel
+          python -m build
+          twine check dist/*
           twine upload dist/*
+
+      - uses: softprops/action-gh-release@v1
+        with:
+          generate_release_notes: true

.github_changelog_generator

@@ -0,0 +1,9 @@
+# run this with:
+# export CHANGELOG_GITHUB_TOKEN=......
+# github_changelog_generator --future-release vX.Y.Z
+user=napari
+project=superqt
+issues=false
+since-tag=v0.2.0
+exclude-labels=duplicate,question,invalid,wontfix,hide
+add-sections={"documentation":{"prefix":"**Documentation updates:**","labels":["documentation"]},"tests":{"prefix":"**Tests & CI:**","labels":["tests"]},"refactor":{"prefix":"**Refactors:**","labels":["refactor"]}}

.gitignore

@@ -9,6 +9,7 @@ __pycache__/
 # Distribution / packaging
 .Python
 env/
+.venv/
 build/
 develop-eggs/
 dist/
@@ -76,6 +77,8 @@ target/
 .DS_Store
 
 # written by setuptools_scm
-*/_version.py
+src/superqt/_version.py
 .vscode/settings.json
 screenshots
+
+.mypy_cache

.pre-commit-config.yaml

@@ -1,23 +1,40 @@
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v3.4.0
+    rev: v4.2.0
     hooks:
       - id: end-of-file-fixer
       - id: trailing-whitespace
+  - repo: https://github.com/asottile/setup-cfg-fmt
+    rev: v1.20.1
+    hooks:
+      - id: setup-cfg-fmt
+  - repo: https://github.com/PyCQA/flake8
+    rev: 4.0.1
+    hooks:
+      - id: flake8
+        additional_dependencies: [flake8-typing-imports==1.7.0]
+        exclude: examples
+  - repo: https://github.com/myint/autoflake
+    rev: v1.4
+    hooks:
+      - id: autoflake
+        args: ["--in-place", "--remove-all-unused-imports"]
   - repo: https://github.com/PyCQA/isort
-    rev: 5.8.0
+    rev: 5.10.1
     hooks:
       - id: isort
   - repo: https://github.com/asottile/pyupgrade
-    rev: v2.15.0
+    rev: v2.32.0
     hooks:
       - id: pyupgrade
+        args: [--py37-plus, --keep-runtime-typing]
   - repo: https://github.com/psf/black
-    rev: 21.5b1
+    rev: 22.3.0
     hooks:
       - id: black
-  - repo: https://github.com/PyCQA/flake8
-    rev: 3.9.2
+  - repo: https://github.com/pre-commit/mirrors-mypy
+    rev: v0.950
     hooks:
-      - id: flake8
-        pass_filenames: true
+      - id: mypy
+        exclude: examples
+        stages: [manual]

CHANGELOG.md

@@ -0,0 +1,159 @@
+# Changelog
+
+## [0.3.2](https://github.com/napari/superqt/tree/0.3.2) (2022-05-02)
+
+[Full Changelog](https://github.com/napari/superqt/compare/v0.3.1...0.3.2)
+
+**Implemented enhancements:**
+
+- Add QSearchableListWidget and QSearchableComboBox widgets [\#80](https://github.com/napari/superqt/pull/80) ([Czaki](https://github.com/Czaki))
+
+**Fixed bugs:**
+
+- Fix crazy animation loop on Qcollapsible [\#84](https://github.com/napari/superqt/pull/84) ([tlambert03](https://github.com/tlambert03))
+- Reorder label update signal [\#83](https://github.com/napari/superqt/pull/83) ([tlambert03](https://github.com/tlambert03))
+- Fix height of expanded QCollapsible when child changes size [\#72](https://github.com/napari/superqt/pull/72) ([tlambert03](https://github.com/tlambert03))
+
+**Tests & CI:**
+
+- Fix deprecation warnings in tests [\#82](https://github.com/napari/superqt/pull/82) ([tlambert03](https://github.com/tlambert03))
+
+## [v0.3.1](https://github.com/napari/superqt/tree/v0.3.1) (2022-03-02)
+
+[Full Changelog](https://github.com/napari/superqt/compare/v0.3.0...v0.3.1)
+
+**Implemented enhancements:**
+
+- Add `signals_blocked` util [\#69](https://github.com/napari/superqt/pull/69) ([tlambert03](https://github.com/tlambert03))
+
+**Fixed bugs:**
+
+- put SignalInstance in TYPE\_CHECKING clause, check min requirements [\#70](https://github.com/napari/superqt/pull/70) ([tlambert03](https://github.com/tlambert03))
+
+**Merged pull requests:**
+
+- Add changelog for v0.3.1 [\#71](https://github.com/napari/superqt/pull/71) ([tlambert03](https://github.com/tlambert03))
+
+## [v0.3.0](https://github.com/napari/superqt/tree/v0.3.0) (2022-02-16)
+
+[Full Changelog](https://github.com/napari/superqt/compare/v0.2.5-1...v0.3.0)
+
+**Implemented enhancements:**
+
+- Qthrottler and debouncer [\#62](https://github.com/napari/superqt/pull/62) ([tlambert03](https://github.com/tlambert03))
+- add edgeLabelMode option to QLabeledSlider [\#59](https://github.com/napari/superqt/pull/59) ([tlambert03](https://github.com/tlambert03))
+
+**Fixed bugs:**
+
+- Fix nested threadworker not starting [\#63](https://github.com/napari/superqt/pull/63) ([tlambert03](https://github.com/tlambert03))
+- Add missing signals on proxy sliders  [\#54](https://github.com/napari/superqt/pull/54) ([tlambert03](https://github.com/tlambert03))
+- Ugly but functional workaround for pyside6.2.1 breakages [\#51](https://github.com/napari/superqt/pull/51) ([tlambert03](https://github.com/tlambert03))
+
+**Tests & CI:**
+
+- add napari test to CI [\#67](https://github.com/napari/superqt/pull/67) ([tlambert03](https://github.com/tlambert03))
+- add gh-release action [\#65](https://github.com/napari/superqt/pull/65) ([tlambert03](https://github.com/tlambert03))
+- fix xvfb tests [\#61](https://github.com/napari/superqt/pull/61) ([tlambert03](https://github.com/tlambert03))
+
+**Refactors:**
+
+- Use qtpy, deprecate superqt.qtcompat, drop support for Qt \<5.12 [\#39](https://github.com/napari/superqt/pull/39) ([tlambert03](https://github.com/tlambert03))
+
+**Merged pull requests:**
+
+- Add changelog for v0.3.0 [\#68](https://github.com/napari/superqt/pull/68) ([tlambert03](https://github.com/tlambert03))
+
+## [v0.2.5-1](https://github.com/napari/superqt/tree/v0.2.5-1) (2021-11-23)
+
+[Full Changelog](https://github.com/napari/superqt/compare/v0.2.5...v0.2.5-1)
+
+**Merged pull requests:**
+
+- typing-extensions version pinning [\#46](https://github.com/napari/superqt/pull/46) ([AhmetCanSolak](https://github.com/AhmetCanSolak))
+
+## [v0.2.5](https://github.com/napari/superqt/tree/v0.2.5) (2021-11-22)
+
+[Full Changelog](https://github.com/napari/superqt/compare/v0.2.4...v0.2.5)
+
+**Implemented enhancements:**
+
+- add support for python 3.10 [\#42](https://github.com/napari/superqt/pull/42) ([tlambert03](https://github.com/tlambert03))
+- QCollapsible for Collapsible Section Control [\#37](https://github.com/napari/superqt/pull/37) ([MosGeo](https://github.com/MosGeo))
+- Threadworker [\#31](https://github.com/napari/superqt/pull/31) ([tlambert03](https://github.com/tlambert03))
+- Add font icons [\#24](https://github.com/napari/superqt/pull/24) ([tlambert03](https://github.com/tlambert03))
+
+**Fixed bugs:**
+
+- Fix some small linting issues. [\#41](https://github.com/napari/superqt/pull/41) ([tlambert03](https://github.com/tlambert03))
+- Use functools.wraps insterad of \_\_wraped\_\_ and manual proxing \_\_name\_\_ [\#29](https://github.com/napari/superqt/pull/29) ([Czaki](https://github.com/Czaki))
+- Propagate function name in `ensure_main_thread` and `ensure_object_thread` [\#28](https://github.com/napari/superqt/pull/28) ([Czaki](https://github.com/Czaki))
+
+**Tests & CI:**
+
+- reskip test\_object\_thread\_return on ci [\#43](https://github.com/napari/superqt/pull/43) ([tlambert03](https://github.com/tlambert03))
+
+**Refactors:**
+
+- refactoring qtcompat [\#34](https://github.com/napari/superqt/pull/34) ([tlambert03](https://github.com/tlambert03))
+
+**Merged pull requests:**
+
+- Fix-manifest, move font tests [\#44](https://github.com/napari/superqt/pull/44) ([tlambert03](https://github.com/tlambert03))
+- update deploy [\#33](https://github.com/napari/superqt/pull/33) ([tlambert03](https://github.com/tlambert03))
+- move to src layout [\#32](https://github.com/napari/superqt/pull/32) ([tlambert03](https://github.com/tlambert03))
+
+## [v0.2.4](https://github.com/napari/superqt/tree/v0.2.4) (2021-09-13)
+
+[Full Changelog](https://github.com/napari/superqt/compare/v0.2.3...v0.2.4)
+
+**Implemented enhancements:**
+
+- Add type stubs for ensure\_thread decorator [\#23](https://github.com/napari/superqt/pull/23) ([tlambert03](https://github.com/tlambert03))
+- Add `ensure_main_tread` and `ensure_object_thread` [\#22](https://github.com/napari/superqt/pull/22) ([Czaki](https://github.com/Czaki))
+- Add QMessageHandler context manager [\#21](https://github.com/napari/superqt/pull/21) ([tlambert03](https://github.com/tlambert03))
+
+**Merged pull requests:**
+
+- add changelog for 0.2.4 [\#25](https://github.com/napari/superqt/pull/25) ([tlambert03](https://github.com/tlambert03))
+
+## [v0.2.3](https://github.com/napari/superqt/tree/v0.2.3) (2021-08-25)
+
+[Full Changelog](https://github.com/napari/superqt/compare/v0.2.2...v0.2.3)
+
+**Fixed bugs:**
+
+- Fix warnings on eliding label for 5.12, test more qt versions [\#19](https://github.com/napari/superqt/pull/19) ([tlambert03](https://github.com/tlambert03))
+
+## [v0.2.2](https://github.com/napari/superqt/tree/v0.2.2) (2021-08-17)
+
+[Full Changelog](https://github.com/napari/superqt/compare/v0.2.1...v0.2.2)
+
+**Implemented enhancements:**
+
+- Add QElidingLabel [\#16](https://github.com/napari/superqt/pull/16) ([tlambert03](https://github.com/tlambert03))
+- Enum ComboBox implementation [\#13](https://github.com/napari/superqt/pull/13) ([Czaki](https://github.com/Czaki))
+
+**Documentation updates:**
+
+- fix broken link [\#18](https://github.com/napari/superqt/pull/18) ([haesleinhuepf](https://github.com/haesleinhuepf))
+
+## [v0.2.1](https://github.com/napari/superqt/tree/v0.2.1) (2021-07-10)
+
+[Full Changelog](https://github.com/napari/superqt/compare/v0.2.0rc0...v0.2.1)
+
+**Fixed bugs:**
+
+- Fix QLabeledRangeSlider API \(fix slider proxy\) [\#10](https://github.com/napari/superqt/pull/10) ([tlambert03](https://github.com/tlambert03))
+- Fix range slider with negative min range [\#9](https://github.com/napari/superqt/pull/9) ([tlambert03](https://github.com/tlambert03))
+
+## [v0.2.0rc0](https://github.com/napari/superqt/tree/v0.2.0rc0) (2021-06-26)
+
+[Full Changelog](https://github.com/napari/superqt/compare/v0.2.0rc1...v0.2.0rc0)
+
+## [v0.2.0rc1](https://github.com/napari/superqt/tree/v0.2.0rc1) (2021-06-26)
+
+[Full Changelog](https://github.com/napari/superqt/compare/v0.2.0...v0.2.0rc1)
+
+
+
+\* *This Changelog was automatically generated by [github_changelog_generator](https://github.com/github-changelog-generator/github-changelog-generator)*

CONTRIBUTING.md

@@ -0,0 +1,52 @@
+# Contributing to this repository
+
+This repository seeks to accumulate Qt-based widgets for python (PyQt & PySide)
+that are not provided in the native QtWidgets module.
+
+## Clone
+
+To get started fork this repository, and clone your fork:
+
+```bash
+# clone your fork
+git clone https://github.com/<your_organization>/superqt
+cd superqt
+
+# install pre-commit hooks
+pre-commit install
+
+# install in editable mode
+pip install -e .[dev]
+
+# run tests & make sure everything is working!
+pytest
+```
+
+## Targeted platforms
+
+All widgets must be well-tested, and should work on:
+
+- Python 3.7 and above
+- PyQt5 (5.11 and above) & PyQt6
+- PySide2 (5.11 and above) & PySide6
+- macOS, Windows, & Linux
+
+
+## Style Guide
+
+All widgets should try to match the native Qt API as much as possible:
+
+- Methods should use `camelCase` naming.
+- Getters/setters use the `attribute()/setAttribute()` pattern.
+- Private methods should use `_camelCaseNaming`.
+- `__init__` methods should be like Qt constructors, meaning they often don't
+  include parameters for most of the widgets properties.
+- When possible, widgets should inherit from the most similar native widget
+  available. It should strictly match the Qt API where it exists, and attempt to
+  cover as much of the native API as possible; this includes properties, public
+  functions, signals, and public slots.
+
+## Testing
+
+Tests can be run in the current environment with `pytest`.  Or, to run tests
+against all supported python & Qt versions, run `tox`.

LICENSE

@@ -12,7 +12,7 @@ modification, are permitted provided that the following conditions are met:
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.
 
-* Neither the name of QtRangeSlider nor the names of its
+* Neither the name of superqt nor the names of its
   contributors may be used to endorse or promote products derived from
   this software without specific prior written permission.
 

MANIFEST.in

@@ -1,5 +1,17 @@
 include LICENSE
 include README.md
+include CHANGELOG.md
+include src/superqt/py.typed
+recursive-include src/superqt *.py
+recursive-include src/superqt *.pyi
 
 recursive-exclude * __pycache__
 recursive-exclude * *.py[co]
+recursive-exclude docs *
+recursive-exclude examples *
+recursive-exclude tests *
+exclude tox.ini
+exclude CONTRIBUTING.md
+exclude codecov.yml
+exclude .github_changelog_generator
+exclude .pre-commit-config.yaml

README.md

@@ -1,262 +1,47 @@
-# QtRangeSlider
+# ![tiny](https://user-images.githubusercontent.com/1609449/120636353-8c3f3800-c43b-11eb-8732-a14dec578897.png)  superqt!
 
-[![License](https://img.shields.io/pypi/l/QtRangeSlider.svg?color=green)](https://github.com/tlambert03/QtRangeSlider/raw/master/LICENSE)
-[![PyPI](https://img.shields.io/pypi/v/QtRangeSlider.svg?color=green)](https://pypi.org/project/QtRangeSlider)
+
+[![License](https://img.shields.io/pypi/l/superqt.svg?color=green)](https://github.com/napari/superqt/raw/master/LICENSE)
+[![PyPI](https://img.shields.io/pypi/v/superqt.svg?color=green)](https://pypi.org/project/superqt)
 [![Python
-Version](https://img.shields.io/pypi/pyversions/QtRangeSlider.svg?color=green)](https://python.org)
-[![Test](https://github.com/tlambert03/QtRangeSlider/actions/workflows/test_and_deploy.yml/badge.svg)](https://github.com/tlambert03/QtRangeSlider/actions/workflows/test_and_deploy.yml)
-[![codecov](https://codecov.io/gh/tlambert03/QtRangeSlider/branch/master/graph/badge.svg)](https://codecov.io/gh/tlambert03/QtRangeSlider)
+Version](https://img.shields.io/pypi/pyversions/superqt.svg?color=green)](https://python.org)
+[![Test](https://github.com/napari/superqt/actions/workflows/test_and_deploy.yml/badge.svg)](https://github.com/napari/superqt/actions/workflows/test_and_deploy.yml)
+[![codecov](https://codecov.io/gh/napari/superqt/branch/main/graph/badge.svg?token=dcsjgl1sOi)](https://codecov.io/gh/napari/superqt)
 
-**The missing multi-handle range slider widget for PyQt & PySide**
+###  "missing" widgets and components for PyQt/PySide
 
-![slider](images/slider.png)
+This repository aims to provide high-quality community-contributed Qt widgets and components for PyQt & PySide
+that are not provided in the native QtWidgets module.
 
-The goal of this package is to provide a Range Slider (a slider with 2 or more
-handles) that feels as "native" as possible.  Styles should match the OS by
-default, and the slider should behave like a standard
-[`QSlider`](https://doc.qt.io/qt-5/qslider.html)... but with multiple handles!
+Components are tested on:
 
-- `QRangeSlider` inherits from [`QSlider`](https://doc.qt.io/qt-5/qslider.html)
-  and attempts to match the Qt API as closely as possible
-- Uses platform-specific styles (for handle, groove, & ticks) but also supports
-  QSS style sheets.
-- Supports mouse wheel and keypress (soon) events
-- Supports PyQt5, PyQt6, PySide2 and PySide6
-- Supports more than 2 handles (e.g. `slider.setValue([0, 10, 60, 80])`)
+- macOS, Windows, & Linux
+- Python 3.7 and above
+- PyQt5 (5.11 and above) & PyQt6
+- PySide2 (5.11 and above) & PySide6
 
-## Installation
+## Widgets
 
-You can install `QtRangeSlider` via pip:
+Widgets include:
 
-```sh
-pip install qtrangeslider
+- [Float Slider](docs/sliders.md#float-slider)
 
-# NOTE: you must also install a Qt Backend.
-# PyQt5, PySide2, PyQt6, and PySide6 are supported
-# As a convenience you can install them as extras:
-pip install qtrangeslider[pyqt5]
-```
+- [Range Slider](docs/sliders.md#range-slider) (multi-handle slider)
 
+<img src="https://raw.githubusercontent.com/napari/superqt/main/docs/images/demo_darwin10.png" alt="range sliders" width=680>
 
-------
 
-## API
+- [Labeled Sliders](docs/sliders.md#labeled-sliders) (sliders with linked
+  spinboxes)
 
-To create a slider:
+<img src="https://raw.githubusercontent.com/napari/superqt/main/docs/images/labeled_qslider.png" alt="range sliders" width=680>
 
-```python
-from qtrangeslider import QRangeSlider
+<img src="https://raw.githubusercontent.com/napari/superqt/main/docs/images/labeled_range.png" alt="range sliders" width=680>
 
-# as usual:
-# you must create a QApplication before create a widget.
-range_slider = QRangeSlider()
-```
+- Unbound Integer SpinBox (backed by python `int`)
 
-As `QRangeSlider` inherits from `QtWidgets.QSlider`, you can use all of the
-same methods available in the [QSlider API](https://doc.qt.io/qt-5/qslider.html).  The major difference is that `value` and `sliderPosition` are reimplemented as `tuples` of `int` (where the length of the tuple is equal to the number of handles in the slider.)
+## Contributing
 
-### `value: Tuple[int, ...]`
+We welcome contributions!
 
-This property holds the current value of all handles in the slider.
-
-The slider forces all values to be within the legal range:
-`minimum <= value <= maximum`.
-
-Changing the value also changes the sliderPosition.
-
-##### Access Functions:
-
-```python
-range_slider.value() -> Tuple[int, ...]
-```
-
-```python
-range_slider.setValue(val: Sequence[int]) -> None
-```
-
-##### Notifier Signal:
-
-```python
-valueChanged(Tuple[int, ...])
-```
-
-### `sliderPosition: Tuple[int, ...]`
-
-This property holds the current slider positions.  It is a `tuple` with length equal to the number of handles.
-
-If [tracking](https://doc.qt.io/qt-5/qabstractslider.html#tracking-prop) is enabled (the default), this is identical to [`value`](#value--tupleint-).
-
-##### Access Functions:
-
-```python
-range_slider.sliderPosition() -> Tuple[int, ...]
-```
-
-```python
-range_slider.setSliderPosition(val: Sequence[int]) -> None
-```
-
-##### Notifier Signal:
-
-```python
-sliderMoved(Tuple[int, ...])
-```
-
-### Additional properties
-
-These options are in addition to the Qt QSlider API, and control the behavior of the bar between handles.
-
-| getter               | setter                                      | type   | default | description                                                                                      |
-| -------------------- | ------------------------------------------- | ------ | ------- | ------------------------------------------------------------------------------------------------ |
-| `barIsVisible`       | `setBarIsVisible` <br>`hideBar` / `showBar` | `bool` | `True`  | <small>Whether the bar between handles is visible.</small>                                       |
-| `barMovesAllHandles` | `setBarMovesAllHandles`                     | `bool` | `True`  | <small>Whether clicking on the bar moves all handles or just the nearest</small>                 |
-| `barIsRigid`         | `setBarIsRigid`                             | `bool` | `True`  | <small>Whether bar length is constant or "elastic" when dragging the bar beyond min/max.</small> |
-------
-
-## Examples
-
-These screenshots show `QRangeSlider` (multiple handles) next to the native `QSlider`
-(single handle). With no styles applied, `QRangeSlider` will match the native OS
-style of `QSlider` – with or without tick marks.  When styles have been applied
-using [Qt Style Sheets](https://doc.qt.io/qt-5/stylesheet-reference.html), then
-`QRangeSlider` will inherit any styles applied to `QSlider` (since it inherits
-from QSlider).  If you'd like to style `QRangeSlider` differently than `QSlider`,
-then you can also target it directly in your style sheet.  The one "special"
-property for QRangeSlider is `qproperty-barColor`, which sets the color of the
-bar between the handles.
-
-> The code for these example widgets is [here](examples/demo_widget.py)
-
-<details>
-
-<summary><em>See style sheet used for this example</em></summary>
-
-```css
-/*
-Because QRangeSlider inherits from QSlider, it will also inherit styles
-*/
-QSlider {
-    min-height: 20px;
-}
-
-QSlider::groove:horizontal {
-    border: 0px;
-    background: qlineargradient(x1:0, y1:0, x2:1, y2:1,
-                                stop:0 #777, stop:1 #aaa);
-    height: 20px;
-    border-radius: 10px;
-}
-
-QSlider::handle {
-    background: qradialgradient(cx:0, cy:0, radius: 1.2, fx:0.5,
-                                fy:0.5, stop:0 #eef, stop:1 #000);
-    height: 20px;
-    width: 20px;
-    border-radius: 10px;
-}
-
-/*
-"QSlider::sub-page" is the one exception ...
-(it styles the area to the left of the QSlider handle)
-*/
-QSlider::sub-page:horizontal {
-    background: #447;
-    border-top-left-radius: 10px;
-    border-bottom-left-radius: 10px;
-}
-
-/*
-for QRangeSlider: use "qproperty-barColor".  "sub-page" will not work.
-*/
-QRangeSlider {
-    qproperty-barColor: #447;
-}
-```
-
-</details>
-
-### macOS
-
-##### Catalina
-![mac10](images/demo_darwin10.png)
-
-##### Big Sur
-![mac11](images/demo_darwin11.png)
-
-### Windows
-
-![window](images/demo_windows.png)
-
-### Linux
-
-![linux](images/demo_linux.png)
-
-
-## Labeled Sliders
-
-This package also includes two "labeled" slider variants. One for `QRangeSlider`, and one for the native `QSlider`:
-
-### `QLabeledRangeSlider`
-
-![labeled_range](images/labeled_range.png)
-
-```python
-from qtrangeslider import QLabeledRangeSlider
-```
-
-This has the same API as `QRangeSlider` with the following additional options:
-
-#### `handleLabelPosition`/`setHandleLabelPosition`
-
-Where/whether labels are shown adjacent to slider handles.
-
-**type:** `QLabeledRangeSlider.LabelPosition`
-
-**default:** `LabelPosition.LabelsAbove`
-
-*options:*
-
-- `LabelPosition.NoLabel` (no labels shown adjacent to handles)
-- `LabelPosition.LabelsAbove`
-- `LabelPosition.LabelsBelow`
-- `LabelPosition.LabelsRight` (alias for `LabelPosition.LabelsAbove`)
-- `LabelPosition.LabelsLeft` (alias for `LabelPosition.LabelsBelow`)
-
-
-#### `edgeLabelMode`/`setEdgeLabelMode`
-
-**type:** `QLabeledRangeSlider.EdgeLabelMode`
-
-**default:** `EdgeLabelMode.LabelIsRange`
-
-*options:*
-
-- `EdgeLabelMode.NoLabel`: no labels shown at slider extremes
-- `EdgeLabelMode.LabelIsRange`: edge labels shown the min/max values
-- `EdgeLabelMode.LabelIsValue`: edge labels shown the slider range
-
-
-#### fine tuning position of labels:
-
-If you find that you need to fine tune the position of the handle labels:
-
-- `QLabeledRangeSlider.label_shift_x`: adjust horizontal label position
-- `QLabeledRangeSlider.label_shift_y`: adjust vertical label position
-
-### `QLabeledSlider`
-
-
-![labeled_range](images/labeled_qslider.png)
-
-```python
-from qtrangeslider import QLabeledSlider
-```
-
-(no additional options at this point)
-
-## Issues
-
-If you encounter any problems, please [file an issue] along with a detailed
-description.
-
-[file an issue]: https://github.com/tlambert03/QtRangeSlider/issues
+Please see the [Contributing Guide](CONTRIBUTING.md)

codecov.yml

@@ -1,14 +1,15 @@
 ignore:
-  - qtrangeslider/_version.py
+  - superqt/_version.py
+  - '*_tests*'
 coverage:
   status:
     project:
       default:
         target: auto
-        threshold: 1% # coverage can drop by up to 1% while still posting success
+        threshold: 1%  # PR will fail if it drops coverage on the project by >1%
     patch:
       default:
         target: auto
-        threshold: 40% # coverage can drop by up to 40% while still posting success
+        threshold: 40%  # A given PR will fail if >40% is untested
 comment:
   require_changes: true # if true: only post the PR comment if coverage changes

docs/combobox.md

@@ -0,0 +1,68 @@
+# ComboBox
+
+
+## Enum Combo Box
+
+`QEnumComboBox` is a variant of [`QComboBox`](https://doc.qt.io/qt-5/qcombobox.html)
+that populates the items in the combobox based on a python `Enum` class.  In addition to all
+the methods provided by `QComboBox`, this subclass adds the methods
+`enumClass`/`setEnumClass` to get/set the current `Enum` class represented by the combobox,
+and `currentEnum`/`setCurrentEnum` to get/set the current `Enum` member in the combobox.
+There is also a new signal `currentEnumChanged(enum)` analogous to `currentIndexChanged` and `currentTextChanged`.
+
+Method like `insertItem` and `addItem` are blocked and try of its usage will end with `RuntimeError`
+
+```python
+from enum import Enum
+
+from superqt import QEnumComboBox
+
+class SampleEnum(Enum):
+    first = 1
+    second = 2
+    third = 3
+
+# as usual:
+# you must create a QApplication before create a widget.
+
+combo = QEnumComboBox()
+combo.setEnumClass(SampleEnum)
+```
+
+other option is to use optional `enum_class` argument of constructor and change
+```python
+combo = QEnumComboBox()
+combo.setEnumClass(SampleEnum)
+```
+to
+```python
+combo = QEnumComboBox(enum_class=SampleEnum)
+```
+
+
+### Allow `None`
+`QEnumComboBox` allow using Optional type annotation:
+
+```python
+from enum import Enum
+
+from superqt import QEnumComboBox
+
+class SampleEnum(Enum):
+    first = 1
+    second = 2
+    third = 3
+
+# as usual:
+# you must create a QApplication before create a widget.
+
+combo = QEnumComboBox()
+combo.setEnumClass(SampleEnum, allow_none=True)
+```
+
+In this case there is added option `----` and `currentEnum` will return `None` for it.
+
+## QSearchableComboBox
+
+`QSearchableComboBox` is a variant of [`QComboBox`](https://doc.qt.io/qt-5/qcombobox.html) that
+allow to filter list of options by enter part of text. It could be drop in replacement for `QComboBox`.

docs/decorators.md

@@ -0,0 +1,86 @@
+# Decorators
+
+## Move to thread decorators
+
+`superqt` provides two decorators that help to ensure that given function is
+running in the desired thread:
+
+* `ensure_main_thread` - ensures that the decorated function/method runs in the main thread
+* `ensure_object_thread` - ensures that a decorated bound method of a `QObject` runs in the
+  thread in which the instance lives ([qt
+  documentation](https://doc.qt.io/qt-5/threads-qobject.html#accessing-qobject-subclasses-from-other-threads)).
+
+By default, functions are executed asynchronously (they return immediately with
+an instance of
+[`concurrent.futures.Future`](https://docs.python.org/3/library/concurrent.futures.html#concurrent.futures.Future)).
+To block and wait for the result, see [Synchronous mode](#synchronous-mode)
+
+```python
+from qtpy.QtCore import QObject
+from superqt import ensure_main_thread, ensure_object_thread
+
+@ensure_main_thread
+def sample_function():
+    print("This function will run in main thread")
+
+
+class SampleObject(QObject):
+    def __init__(self):
+        super().__init__()
+        self._value = 1
+
+    @ensure_main_thread
+    def sample_method1(self):
+        print("This method will run in main thread")
+
+    @ensure_object_thread
+    def sample_method3(self):
+        import time
+        print("sleeping")
+        time.sleep(1)
+        print("This method will run in object thread")
+
+    @property
+    def value(self):
+        print("return value")
+        return self._value
+
+    @value.setter
+    @ensure_object_thread
+    def value(self, value):
+        print("this setter will run in object thread")
+        self._value = value
+```
+
+As can be seen in this example these decorators can also be used for setters.
+
+These decorators should not be used as replacement of Qt Signals but rather to
+interact with Qt objects from non Qt code.
+
+### Synchronous mode
+
+If you'd like for the program to block and wait for the result of your function
+call, use the `await_return=True` parameter, and optionally specify a timeout.
+
+> *Note: Using synchronous mode may significantly impact performance.*
+
+```python
+from superqt import ensure_main_thread
+
+@ensure_main_thread
+def sample_function1():
+    return 1
+
+@ensure_main_thread(await_return=True)
+def sample_function2():
+    return 2
+
+assert sample_function1() is None
+assert sample_function2() == 2
+
+# optionally, specify a timeout
+@ensure_main_thread(await_return=True, timeout=10000)
+def sample_function():
+    return 1
+
+```

docs/listwidgets.md

@@ -0,0 +1,8 @@
+# ListWidget
+
+## QSearchableListWidget
+
+`QSearchableListWidget` is a variant of [`QListWidget`](https://doc.qt.io/qt-5/qlistwidget.html) that add text entry above list widget that allow to filter list
+of available options.
+
+Because of implementation it does not inherit directly from `QListWidget` but satisfy it all api. The only limitation is that it cannot be used as argument of `QListWidgetItem` constructor.

docs/sliders.md

@@ -0,0 +1,237 @@
+# Sliders
+
+
+![slider](images/slider.png)
+
+- `QRangeSlider` inherits from [`QSlider`](https://doc.qt.io/qt-5/qslider.html)
+  and attempts to match the Qt API as closely as possible
+- Uses platform-specific styles (for handle, groove, & ticks) but also supports
+  QSS style sheets.
+- Supports mouse wheel and keypress (soon) events
+- Supports more than 2 handles (e.g. `slider.setValue([0, 10, 60, 80])`)
+
+------
+
+## Range Slider
+
+```python
+from superqt import QRangeSlider
+
+# as usual:
+# you must create a QApplication before create a widget.
+range_slider = QRangeSlider()
+```
+
+As `QRangeSlider` inherits from `QtWidgets.QSlider`, you can use all of the
+same methods available in the [QSlider API](https://doc.qt.io/qt-5/qslider.html).  The major difference is that `value` and `sliderPosition` are reimplemented as `tuples` of `int` (where the length of the tuple is equal to the number of handles in the slider.)
+
+### `value: Tuple[int, ...]`
+
+This property holds the current value of all handles in the slider.
+
+The slider forces all values to be within the legal range:
+`minimum <= value <= maximum`.
+
+Changing the value also changes the sliderPosition.
+
+##### Access Functions:
+
+```python
+range_slider.value() -> Tuple[int, ...]
+```
+
+```python
+range_slider.setValue(val: Sequence[int]) -> None
+```
+
+##### Notifier Signal:
+
+```python
+valueChanged(Tuple[int, ...])
+```
+
+### `sliderPosition: Tuple[int, ...]`
+
+This property holds the current slider positions.  It is a `tuple` with length equal to the number of handles.
+
+If [tracking](https://doc.qt.io/qt-5/qabstractslider.html#tracking-prop) is enabled (the default), this is identical to [`value`](#value--tupleint-).
+
+##### Access Functions:
+
+```python
+range_slider.sliderPosition() -> Tuple[int, ...]
+```
+
+```python
+range_slider.setSliderPosition(val: Sequence[int]) -> None
+```
+
+##### Notifier Signal:
+
+```python
+sliderMoved(Tuple[int, ...])
+```
+
+### Additional properties
+
+These options are in addition to the Qt QSlider API, and control the behavior of the bar between handles.
+
+| getter               | setter                                      | type   | default | description                                                                                      |
+| -------------------- | ------------------------------------------- | ------ | ------- | ------------------------------------------------------------------------------------------------ |
+| `barIsVisible`       | `setBarIsVisible` <br>`hideBar` / `showBar` | `bool` | `True`  | <small>Whether the bar between handles is visible.</small>                                       |
+| `barMovesAllHandles` | `setBarMovesAllHandles`                     | `bool` | `True`  | <small>Whether clicking on the bar moves all handles or just the nearest</small>                 |
+| `barIsRigid`         | `setBarIsRigid`                             | `bool` | `True`  | <small>Whether bar length is constant or "elastic" when dragging the bar beyond min/max.</small> |
+------
+
+### Examples
+
+These screenshots show `QRangeSlider` (multiple handles) next to the native `QSlider`
+(single handle). With no styles applied, `QRangeSlider` will match the native OS
+style of `QSlider` – with or without tick marks.  When styles have been applied
+using [Qt Style Sheets](https://doc.qt.io/qt-5/stylesheet-reference.html), then
+`QRangeSlider` will inherit any styles applied to `QSlider` (since it inherits
+from QSlider).  If you'd like to style `QRangeSlider` differently than `QSlider`,
+then you can also target it directly in your style sheet.  The one "special"
+property for QRangeSlider is `qproperty-barColor`, which sets the color of the
+bar between the handles.
+
+> The code for these example widgets is [here](../examples/demo_widget.py)
+<details>
+
+<summary><em>See style sheet used for this example</em></summary>
+
+```css
+/*
+Because QRangeSlider inherits from QSlider, it will also inherit styles
+*/
+QSlider {
+    min-height: 20px;
+}
+
+QSlider::groove:horizontal {
+    border: 0px;
+    background: qlineargradient(x1:0, y1:0, x2:1, y2:1,
+                                stop:0 #777, stop:1 #aaa);
+    height: 20px;
+    border-radius: 10px;
+}
+
+QSlider::handle {
+    background: qradialgradient(cx:0, cy:0, radius: 1.2, fx:0.5,
+                                fy:0.5, stop:0 #eef, stop:1 #000);
+    height: 20px;
+    width: 20px;
+    border-radius: 10px;
+}
+
+/*
+"QSlider::sub-page" is the one exception ...
+(it styles the area to the left of the QSlider handle)
+*/
+QSlider::sub-page:horizontal {
+    background: #447;
+    border-top-left-radius: 10px;
+    border-bottom-left-radius: 10px;
+}
+
+/*
+for QRangeSlider: use "qproperty-barColor".  "sub-page" will not work.
+*/
+QRangeSlider {
+    qproperty-barColor: #447;
+}
+```
+
+</details>
+
+#### macOS
+
+##### Catalina
+
+![mac10](images/demo_darwin10.png)
+
+##### Big Sur
+
+![mac11](images/demo_darwin11.png)
+
+#### Windows
+
+![window](images/demo_windows.png)
+
+#### Linux
+
+![linux](images/demo_linux.png)
+
+## Labeled Sliders
+
+This package also includes two "labeled" slider variants. One for `QRangeSlider`, and one for the native `QSlider`:
+
+### `QLabeledRangeSlider`
+
+![labeled_range](images/labeled_range.png)
+
+```python
+from superqt import QLabeledRangeSlider
+```
+
+This has the same API as `QRangeSlider` with the following additional options:
+
+#### `handleLabelPosition`/`setHandleLabelPosition`
+
+Where/whether labels are shown adjacent to slider handles.
+
+**type:** `QLabeledRangeSlider.LabelPosition`
+
+**default:** `LabelPosition.LabelsAbove`
+
+*options:*
+
+- `LabelPosition.NoLabel` (no labels shown adjacent to handles)
+- `LabelPosition.LabelsAbove`
+- `LabelPosition.LabelsBelow`
+- `LabelPosition.LabelsRight` (alias for `LabelPosition.LabelsAbove`)
+- `LabelPosition.LabelsLeft` (alias for `LabelPosition.LabelsBelow`)
+
+#### `edgeLabelMode`/`setEdgeLabelMode`
+
+**type:** `QLabeledRangeSlider.EdgeLabelMode`
+
+**default:** `EdgeLabelMode.LabelIsRange`
+
+*options:*
+
+- `EdgeLabelMode.NoLabel`: no labels shown at slider extremes
+- `EdgeLabelMode.LabelIsRange`: edge labels shown the min/max values
+- `EdgeLabelMode.LabelIsValue`: edge labels shown the slider range
+
+#### fine tuning position of labels:
+
+If you find that you need to fine tune the position of the handle labels:
+
+- `QLabeledRangeSlider.label_shift_x`: adjust horizontal label position
+- `QLabeledRangeSlider.label_shift_y`: adjust vertical label position
+
+### `QLabeledSlider`
+
+![labeled_range](images/labeled_qslider.png)
+
+```python
+from superqt import QLabeledSlider
+```
+
+(no additional options at this point)
+
+## Issues
+
+If you encounter any problems, please [file an issue] along with a detailed
+description.
+
+[file an issue]: https://github.com/napari/superqt/issues
+
+## Float Slider
+
+just like QSlider, but supports float values
+
+```python
+from superqt import QDoubleSlider
+```

examples/basic.py

@@ -1,10 +1,12 @@
-from qtrangeslider import QRangeSlider
-from qtrangeslider.qtcompat.QtCore import Qt
-from qtrangeslider.qtcompat.QtWidgets import QApplication
+from qtpy.QtCore import Qt
+from qtpy.QtWidgets import QApplication
+
+from superqt import QRangeSlider
 
 app = QApplication([])
 
-slider = QRangeSlider(Qt.Horizontal)
+slider = QRangeSlider(Qt.Orientation.Horizontal)
+slider = QRangeSlider(Qt.Orientation.Horizontal)
 
 slider.setValue((20, 80))
 slider.show()

examples/basic_float.py

@@ -0,0 +1,13 @@
+from qtpy.QtCore import Qt
+from qtpy.QtWidgets import QApplication
+
+from superqt import QDoubleSlider
+
+app = QApplication([])
+
+slider = QDoubleSlider(Qt.Orientation.Horizontal)
+slider.setRange(0, 1)
+slider.setValue(0.5)
+slider.show()
+
+app.exec_()

examples/collapsible.py

@@ -0,0 +1,15 @@
+"""Example for QCollapsible"""
+from qtpy.QtWidgets import QApplication, QLabel, QPushButton
+
+from superqt import QCollapsible
+
+app = QApplication([])
+
+collapsible = QCollapsible("Advanced analysis")
+collapsible.addWidget(QLabel("This is the inside of the collapsible frame"))
+for i in range(10):
+    collapsible.addWidget(QPushButton(f"Content button {i + 1}"))
+
+collapsible.expand(animate=False)
+collapsible.show()
+app.exec_()

examples/demo_widget.py

@@ -1,6 +1,7 @@
-from qtrangeslider import QRangeSlider
-from qtrangeslider.qtcompat import QtCore
-from qtrangeslider.qtcompat import QtWidgets as QtW
+from qtpy import QtCore
+from qtpy import QtWidgets as QtW
+
+from superqt import QRangeSlider
 
 QSS = """
 QSlider {
@@ -33,35 +34,37 @@ QRangeSlider {
 }
 """
 
+Horizontal = QtCore.Qt.Orientation.Horizontal
+
 
 class DemoWidget(QtW.QWidget):
     def __init__(self) -> None:
         super().__init__()
 
-        reg_hslider = QtW.QSlider(QtCore.Qt.Horizontal)
+        reg_hslider = QtW.QSlider(Horizontal)
         reg_hslider.setValue(50)
-        range_hslider = QRangeSlider(QtCore.Qt.Horizontal)
+        range_hslider = QRangeSlider(Horizontal)
         range_hslider.setValue((20, 80))
-        multi_range_hslider = QRangeSlider(QtCore.Qt.Horizontal)
+        multi_range_hslider = QRangeSlider(Horizontal)
         multi_range_hslider.setValue((11, 33, 66, 88))
-        multi_range_hslider.setTickPosition(QtW.QSlider.TicksAbove)
+        multi_range_hslider.setTickPosition(QtW.QSlider.TickPosition.TicksAbove)
 
-        styled_reg_hslider = QtW.QSlider(QtCore.Qt.Horizontal)
+        styled_reg_hslider = QtW.QSlider(Horizontal)
         styled_reg_hslider.setValue(50)
         styled_reg_hslider.setStyleSheet(QSS)
-        styled_range_hslider = QRangeSlider(QtCore.Qt.Horizontal)
+        styled_range_hslider = QRangeSlider(Horizontal)
         styled_range_hslider.setValue((20, 80))
         styled_range_hslider.setStyleSheet(QSS)
 
-        reg_vslider = QtW.QSlider(QtCore.Qt.Vertical)
+        reg_vslider = QtW.QSlider(QtCore.Qt.Orientation.Vertical)
         reg_vslider.setValue(50)
-        range_vslider = QRangeSlider(QtCore.Qt.Vertical)
+        range_vslider = QRangeSlider(QtCore.Qt.Orientation.Vertical)
         range_vslider.setValue((22, 77))
 
-        tick_vslider = QtW.QSlider(QtCore.Qt.Vertical)
+        tick_vslider = QtW.QSlider(QtCore.Qt.Orientation.Vertical)
         tick_vslider.setValue(55)
         tick_vslider.setTickPosition(QtW.QSlider.TicksRight)
-        range_tick_vslider = QRangeSlider(QtCore.Qt.Vertical)
+        range_tick_vslider = QRangeSlider(QtCore.Qt.Orientation.Vertical)
         range_tick_vslider.setValue((22, 77))
         range_tick_vslider.setTickPosition(QtW.QSlider.TicksLeft)
 
@@ -112,10 +115,10 @@ if __name__ == "__main__":
     app = QtW.QApplication([])
     demo = DemoWidget()
 
-    if "-x" in sys.argv:
-        app.exec_()
-    else:
+    if "-snap" in sys.argv:
         import platform
 
         QtW.QApplication.processEvents()
         demo.grab().save(str(dest / f"demo_{platform.system().lower()}.png"))
+    else:
+        app.exec_()

examples/eliding_label.py

@@ -0,0 +1,13 @@
+from qtpy.QtWidgets import QApplication
+
+from superqt import QElidingLabel
+
+app = QApplication([])
+
+widget = QElidingLabel(
+    "a skj skjfskfj sdlf sdfl sdlfk jsdf sdlkf jdsf dslfksdl sdlfk sdf sdl "
+    "fjsdlf kjsdlfk laskdfsal as lsdfjdsl kfjdslf asfd dslkjfldskf sdlkfj"
+)
+widget.setWordWrap(True)
+widget.show()
+app.exec_()

examples/float.py

@@ -1,15 +1,15 @@
-from qtrangeslider import QRangeSlider
-from qtrangeslider._float_slider import QDoubleRangeSlider, QDoubleSlider
-from qtrangeslider.qtcompat.QtCore import Qt
-from qtrangeslider.qtcompat.QtWidgets import QApplication, QVBoxLayout, QWidget
+from qtpy.QtCore import Qt
+from qtpy.QtWidgets import QApplication, QVBoxLayout, QWidget
+
+from superqt import QDoubleRangeSlider, QDoubleSlider, QRangeSlider
 
 app = QApplication([])
 
 w = QWidget()
 
-sld1 = QDoubleSlider(Qt.Horizontal)
-sld2 = QDoubleRangeSlider(Qt.Horizontal)
-rs = QRangeSlider(Qt.Horizontal)
+sld1 = QDoubleSlider(Qt.Orientation.Horizontal)
+sld2 = QDoubleRangeSlider(Qt.Orientation.Horizontal)
+rs = QRangeSlider(Qt.Orientation.Horizontal)
 
 sld1.valueChanged.connect(lambda e: print("doubslider valuechanged", e))
 

examples/fonticon1.py

@@ -0,0 +1,21 @@
+try:
+    from fonticon_fa5 import FA5S
+except ImportError as e:
+    raise type(e)(
+        "This example requires the fontawesome fontpack:\n\n"
+        "pip install git+https://github.com/tlambert03/fonticon-fontawesome5.git"
+    )
+
+from qtpy.QtCore import QSize
+from qtpy.QtWidgets import QApplication, QPushButton
+
+from superqt.fonticon import icon, pulse
+
+app = QApplication([])
+
+btn2 = QPushButton()
+btn2.setIcon(icon(FA5S.spinner, animation=pulse(btn2)))
+btn2.setIconSize(QSize(225, 225))
+btn2.show()
+
+app.exec()

examples/fonticon2.py

@@ -0,0 +1,21 @@
+try:
+    from fonticon_fa5 import FA5S
+except ImportError as e:
+    raise type(e)(
+        "This example requires the fontawesome fontpack:\n\n"
+        "pip install git+https://github.com/tlambert03/fonticon-fontawesome5.git"
+    )
+
+from qtpy.QtWidgets import QApplication, QPushButton
+
+from superqt.fonticon import setTextIcon
+
+app = QApplication([])
+
+
+btn4 = QPushButton()
+btn4.resize(275, 275)
+setTextIcon(btn4, FA5S.hamburger)
+btn4.show()
+
+app.exec()

examples/fonticon3.py

@@ -0,0 +1,41 @@
+try:
+    from fonticon_fa5 import FA5S
+except ImportError as e:
+    raise type(e)(
+        "This example requires the fontawesome fontpack:\n\n"
+        "pip install git+https://github.com/tlambert03/fonticon-fontawesome5.git"
+    )
+
+from qtpy.QtCore import QSize
+from qtpy.QtWidgets import QApplication, QPushButton
+
+from superqt.fonticon import IconOpts, icon, pulse, spin
+
+app = QApplication([])
+
+btn = QPushButton()
+btn.setIcon(
+    icon(
+        FA5S.smile,
+        color="blue",
+        states={
+            "active": IconOpts(
+                glyph_key=FA5S.spinner,
+                color="red",
+                scale_factor=0.5,
+                animation=pulse(btn),
+            ),
+            "disabled": {"color": "green", "scale_factor": 0.8, "animation": spin(btn)},
+        },
+    )
+)
+btn.setIconSize(QSize(256, 256))
+btn.show()
+
+
+@btn.clicked.connect
+def toggle_state():
+    btn.setChecked(not btn.isChecked())
+
+
+app.exec()

examples/generic.py

@@ -0,0 +1,13 @@
+from qtpy.QtCore import Qt
+from qtpy.QtWidgets import QApplication
+
+from superqt import QDoubleSlider
+
+app = QApplication([])
+
+sld = QDoubleSlider(Qt.Orientation.Horizontal)
+sld.setRange(0, 1)
+sld.setValue(0.5)
+sld.show()
+
+app.exec_()

examples/icon_explorer.py

@@ -0,0 +1,378 @@
+from qtpy import QtCore, QtGui, QtWidgets
+from qtpy.QtCore import Qt
+
+from superqt.fonticon._plugins import loaded
+
+P = loaded(load_all=True)
+if not P:
+    print("you have no font packs loaded!")
+
+
+class GlyphDelegate(QtWidgets.QItemDelegate):
+    def createEditor(self, parent, option, index):
+        if index.column() < 2:
+            edit = QtWidgets.QLineEdit(parent)
+            edit.editingFinished.connect(self.emitCommitData)
+            return edit
+        comboBox = QtWidgets.QComboBox(parent)
+        if index.column() == 2:
+            comboBox.addItem("Normal")
+            comboBox.addItem("Active")
+            comboBox.addItem("Disabled")
+            comboBox.addItem("Selected")
+        elif index.column() == 3:
+            comboBox.addItem("Off")
+            comboBox.addItem("On")
+
+        comboBox.activated.connect(self.emitCommitData)
+        return comboBox
+
+    def setEditorData(self, editor, index):
+        if index.column() < 2:
+            editor.setText(index.model().data(index))
+            return
+        comboBox = editor
+        if comboBox:
+            pos = comboBox.findText(
+                index.model().data(index), Qt.MatchFlag.MatchExactly
+            )
+            comboBox.setCurrentIndex(pos)
+
+    def setModelData(self, editor, model, index):
+        if editor:
+            text = editor.text() if index.column() < 2 else editor.currentText()
+            model.setData(index, text)
+
+    def emitCommitData(self):
+        self.commitData.emit(self.sender())
+
+
+class IconPreviewArea(QtWidgets.QWidget):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+
+        mainLayout = QtWidgets.QGridLayout()
+        self.setLayout(mainLayout)
+
+        self.icon = QtGui.QIcon()
+        self.size = QtCore.QSize()
+        self.stateLabels = []
+        self.modeLabels = []
+        self.pixmapLabels = []
+
+        self.stateLabels.append(self.createHeaderLabel("Off"))
+        self.stateLabels.append(self.createHeaderLabel("On"))
+        self.modeLabels.append(self.createHeaderLabel("Normal"))
+        self.modeLabels.append(self.createHeaderLabel("Active"))
+        self.modeLabels.append(self.createHeaderLabel("Disabled"))
+        self.modeLabels.append(self.createHeaderLabel("Selected"))
+
+        for j, label in enumerate(self.stateLabels):
+            mainLayout.addWidget(label, j + 1, 0)
+
+        for i, label in enumerate(self.modeLabels):
+            mainLayout.addWidget(label, 0, i + 1)
+
+            self.pixmapLabels.append([])
+            for j in range(len(self.stateLabels)):
+                self.pixmapLabels[i].append(self.createPixmapLabel())
+                mainLayout.addWidget(self.pixmapLabels[i][j], j + 1, i + 1)
+
+    def setIcon(self, icon):
+        self.icon = icon
+        self.updatePixmapLabels()
+
+    def setSize(self, size):
+        if size != self.size:
+            self.size = size
+            self.updatePixmapLabels()
+
+    def createHeaderLabel(self, text):
+        label = QtWidgets.QLabel("<b>%s</b>" % text)
+        label.setAlignment(Qt.AlignmentFlag.AlignCenter)
+        return label
+
+    def createPixmapLabel(self):
+        label = QtWidgets.QLabel()
+        label.setEnabled(False)
+        label.setAlignment(Qt.AlignmentFlag.AlignCenter)
+        label.setFrameShape(QtWidgets.QFrame.Box)
+        label.setSizePolicy(
+            QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding
+        )
+        label.setBackgroundRole(QtGui.QPalette.Base)
+        label.setAutoFillBackground(True)
+        label.setMinimumSize(132, 132)
+        return label
+
+    def updatePixmapLabels(self):
+        for i in range(len(self.modeLabels)):
+            if i == 0:
+                mode = QtGui.QIcon.Mode.Normal
+            elif i == 1:
+                mode = QtGui.QIcon.Mode.Active
+            elif i == 2:
+                mode = QtGui.QIcon.Mode.Disabled
+            else:
+                mode = QtGui.QIcon.Mode.Selected
+
+            for j in range(len(self.stateLabels)):
+                state = {True: QtGui.QIcon.State.Off, False: QtGui.QIcon.State.On}[
+                    j == 0
+                ]
+                pixmap = self.icon.pixmap(self.size, mode, state)
+                self.pixmapLabels[i][j].setPixmap(pixmap)
+                self.pixmapLabels[i][j].setEnabled(not pixmap.isNull())
+
+
+class MainWindow(QtWidgets.QMainWindow):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+
+        self.centralWidget = QtWidgets.QWidget()
+        self.setCentralWidget(self.centralWidget)
+
+        self.createPreviewGroupBox()
+        self.createGlyphBox()
+        self.createIconSizeGroupBox()
+
+        mainLayout = QtWidgets.QGridLayout()
+        mainLayout.addWidget(self.previewGroupBox, 0, 0, 1, 2)
+        mainLayout.addWidget(self.glyphGroupBox, 1, 0)
+        mainLayout.addWidget(self.iconSizeGroupBox, 1, 1)
+        self.centralWidget.setLayout(mainLayout)
+
+        self.setWindowTitle("Icons")
+        self.otherRadioButton.click()
+
+        self.resize(self.minimumSizeHint())
+
+    def changeSize(self):
+        if self.otherRadioButton.isChecked():
+            extent = self.otherSpinBox.value()
+        else:
+            if self.smallRadioButton.isChecked():
+                metric = QtWidgets.QStyle.PixelMetric.PM_SmallIconSize
+            elif self.largeRadioButton.isChecked():
+                metric = QtWidgets.QStyle.PixelMetric.PM_LargeIconSize
+            elif self.toolBarRadioButton.isChecked():
+                metric = QtWidgets.QStyle.PixelMetric.PM_ToolBarIconSize
+            elif self.listViewRadioButton.isChecked():
+                metric = QtWidgets.QStyle.PixelMetric.PM_ListViewIconSize
+            elif self.iconViewRadioButton.isChecked():
+                metric = QtWidgets.QStyle.PixelMetric.PM_IconViewIconSize
+            else:
+                metric = QtWidgets.QStyle.PixelMetric.PM_TabBarIconSize
+
+            extent = QtWidgets.QApplication.style().pixelMetric(metric)
+
+        self.previewArea.setSize(QtCore.QSize(extent, extent))
+        self.otherSpinBox.setEnabled(self.otherRadioButton.isChecked())
+
+    def changeIcon(self):
+        from superqt import fonticon
+
+        icon = None
+        for row in range(self.glyphTable.rowCount()):
+            item0 = self.glyphTable.item(row, 0)
+            item1 = self.glyphTable.item(row, 1)
+            item2 = self.glyphTable.item(row, 2)
+            item3 = self.glyphTable.item(row, 3)
+
+            if item0.checkState() != Qt.CheckState.Checked:
+                continue
+            key = item0.text()
+            if not key:
+                continue
+
+            if item2.text() == "Normal":
+                mode = QtGui.QIcon.Mode.Normal
+            elif item2.text() == "Active":
+                mode = QtGui.QIcon.Mode.Active
+            elif item2.text() == "Disabled":
+                mode = QtGui.QIcon.Mode.Disabled
+            else:
+                mode = QtGui.QIcon.Mode.Selected
+
+            color = item1.text() or None
+            state = (
+                QtGui.QIcon.State.On if item3.text() == "On" else QtGui.QIcon.State.Off
+            )
+            try:
+                if icon is None:
+                    icon = fonticon.icon(key, color=color)
+                else:
+                    icon.addState(state, mode, glyph_key=key, color=color)
+            except Exception as e:
+                print(e)
+                continue
+        if icon:
+            self.previewArea.setIcon(icon)
+
+    def createPreviewGroupBox(self):
+        self.previewGroupBox = QtWidgets.QGroupBox("Preview")
+
+        self.previewArea = IconPreviewArea()
+
+        layout = QtWidgets.QVBoxLayout()
+        layout.addWidget(self.previewArea)
+        self.previewGroupBox.setLayout(layout)
+
+    def createGlyphBox(self):
+        self.glyphGroupBox = QtWidgets.QGroupBox("Glpyhs")
+        self.glyphGroupBox.setMinimumSize(480, 200)
+        self.glyphTable = QtWidgets.QTableWidget()
+        self.glyphTable.setSelectionMode(QtWidgets.QAbstractItemView.NoSelection)
+        self.glyphTable.setItemDelegate(GlyphDelegate(self))
+
+        self.glyphTable.horizontalHeader().setDefaultSectionSize(100)
+        self.glyphTable.setColumnCount(4)
+        self.glyphTable.setHorizontalHeaderLabels(("Glyph", "Color", "Mode", "State"))
+        self.glyphTable.horizontalHeader().setSectionResizeMode(
+            0, QtWidgets.QHeaderView.Stretch
+        )
+        self.glyphTable.horizontalHeader().setSectionResizeMode(
+            1, QtWidgets.QHeaderView.Fixed
+        )
+        self.glyphTable.horizontalHeader().setSectionResizeMode(
+            2, QtWidgets.QHeaderView.Fixed
+        )
+        self.glyphTable.horizontalHeader().setSectionResizeMode(
+            3, QtWidgets.QHeaderView.Fixed
+        )
+        self.glyphTable.verticalHeader().hide()
+
+        self.glyphTable.itemChanged.connect(self.changeIcon)
+
+        layout = QtWidgets.QVBoxLayout()
+        layout.addWidget(self.glyphTable)
+        self.glyphGroupBox.setLayout(layout)
+        self.changeIcon()
+
+        p0 = list(P)[-1]
+        key = f"{p0}.{list(P[p0])[1]}"
+        for _ in range(4):
+            row = self.glyphTable.rowCount()
+            self.glyphTable.setRowCount(row + 1)
+
+            item0 = QtWidgets.QTableWidgetItem()
+            item1 = QtWidgets.QTableWidgetItem()
+
+            if _ == 0:
+                item0.setText(key)
+            # item0.setFlags(item0.flags() & ~Qt.ItemFlag.ItemIsEditable)
+
+            item2 = QtWidgets.QTableWidgetItem("Normal")
+            item3 = QtWidgets.QTableWidgetItem("Off")
+
+            self.glyphTable.setItem(row, 0, item0)
+            self.glyphTable.setItem(row, 1, item1)
+            self.glyphTable.setItem(row, 2, item2)
+            self.glyphTable.setItem(row, 3, item3)
+            self.glyphTable.openPersistentEditor(item2)
+            self.glyphTable.openPersistentEditor(item3)
+
+            item0.setCheckState(Qt.CheckState.Checked)
+
+    def createIconSizeGroupBox(self):
+        self.iconSizeGroupBox = QtWidgets.QGroupBox("Icon Size")
+
+        self.smallRadioButton = QtWidgets.QRadioButton()
+        self.largeRadioButton = QtWidgets.QRadioButton()
+        self.toolBarRadioButton = QtWidgets.QRadioButton()
+        self.listViewRadioButton = QtWidgets.QRadioButton()
+        self.iconViewRadioButton = QtWidgets.QRadioButton()
+        self.tabBarRadioButton = QtWidgets.QRadioButton()
+        self.otherRadioButton = QtWidgets.QRadioButton("Other:")
+
+        self.otherSpinBox = QtWidgets.QSpinBox()
+        self.otherSpinBox.setRange(8, 128)
+        self.otherSpinBox.setValue(64)
+
+        self.smallRadioButton.toggled.connect(self.changeSize)
+        self.largeRadioButton.toggled.connect(self.changeSize)
+        self.toolBarRadioButton.toggled.connect(self.changeSize)
+        self.listViewRadioButton.toggled.connect(self.changeSize)
+        self.iconViewRadioButton.toggled.connect(self.changeSize)
+        self.tabBarRadioButton.toggled.connect(self.changeSize)
+        self.otherRadioButton.toggled.connect(self.changeSize)
+        self.otherSpinBox.valueChanged.connect(self.changeSize)
+
+        otherSizeLayout = QtWidgets.QHBoxLayout()
+        otherSizeLayout.addWidget(self.otherRadioButton)
+        otherSizeLayout.addWidget(self.otherSpinBox)
+        otherSizeLayout.addStretch()
+
+        layout = QtWidgets.QGridLayout()
+        layout.addWidget(self.smallRadioButton, 0, 0)
+        layout.addWidget(self.largeRadioButton, 1, 0)
+        layout.addWidget(self.toolBarRadioButton, 2, 0)
+        layout.addWidget(self.listViewRadioButton, 0, 1)
+        layout.addWidget(self.iconViewRadioButton, 1, 1)
+        layout.addWidget(self.tabBarRadioButton, 2, 1)
+        layout.addLayout(otherSizeLayout, 3, 0, 1, 2)
+        layout.setRowStretch(4, 1)
+        self.iconSizeGroupBox.setLayout(layout)
+        self.changeStyle()
+
+    def changeStyle(self, style=None):
+        style = style or QtWidgets.QApplication.style().objectName()
+        style = QtWidgets.QStyleFactory.create(style)
+        if not style:
+            return
+
+        QtWidgets.QApplication.setStyle(style)
+
+        self.setButtonText(
+            self.smallRadioButton,
+            "Small (%d x %d)",
+            style,
+            QtWidgets.QStyle.PixelMetric.PM_SmallIconSize,
+        )
+        self.setButtonText(
+            self.largeRadioButton,
+            "Large (%d x %d)",
+            style,
+            QtWidgets.QStyle.PixelMetric.PM_LargeIconSize,
+        )
+        self.setButtonText(
+            self.toolBarRadioButton,
+            "Toolbars (%d x %d)",
+            style,
+            QtWidgets.QStyle.PixelMetric.PM_ToolBarIconSize,
+        )
+        self.setButtonText(
+            self.listViewRadioButton,
+            "List views (%d x %d)",
+            style,
+            QtWidgets.QStyle.PixelMetric.PM_ListViewIconSize,
+        )
+        self.setButtonText(
+            self.iconViewRadioButton,
+            "Icon views (%d x %d)",
+            style,
+            QtWidgets.QStyle.PixelMetric.PM_IconViewIconSize,
+        )
+        self.setButtonText(
+            self.tabBarRadioButton,
+            "Tab bars (%d x %d)",
+            style,
+            QtWidgets.QStyle.PixelMetric.PM_TabBarIconSize,
+        )
+
+        self.changeSize()
+
+    @staticmethod
+    def setButtonText(button, label, style, metric):
+        metric_value = style.pixelMetric(metric)
+        button.setText(label % (metric_value, metric_value))
+
+
+if __name__ == "__main__":
+
+    import sys
+
+    app = QtWidgets.QApplication(sys.argv)
+    mainWin = MainWindow()
+    mainWin.show()
+    sys.exit(app.exec_())

examples/labeled.py

@@ -1,20 +1,16 @@
-from qtrangeslider._labeled import (
+from qtpy.QtCore import Qt
+from qtpy.QtWidgets import QApplication, QHBoxLayout, QVBoxLayout, QWidget
+
+from superqt import (
     QLabeledDoubleRangeSlider,
     QLabeledDoubleSlider,
     QLabeledRangeSlider,
     QLabeledSlider,
 )
-from qtrangeslider.qtcompat.QtCore import Qt
-from qtrangeslider.qtcompat.QtWidgets import (
-    QApplication,
-    QHBoxLayout,
-    QVBoxLayout,
-    QWidget,
-)
 
 app = QApplication([])
 
-ORIENTATION = Qt.Horizontal
+ORIENTATION = Qt.Orientation.Horizontal
 
 w = QWidget()
 qls = QLabeledSlider(ORIENTATION)
@@ -30,16 +26,19 @@ qlds.setValue(0.5)
 qlds.setSingleStep(0.1)
 
 qlrs = QLabeledRangeSlider(ORIENTATION)
-qlrs.valueChanged.connect(lambda e: print("qlrs valueChanged", e))
+qlrs.valueChanged.connect(lambda e: print("QLabeledRangeSlider valueChanged", e))
 qlrs.setValue((20, 60))
 
 qldrs = QLabeledDoubleRangeSlider(ORIENTATION)
 qldrs.valueChanged.connect(lambda e: print("qlrs valueChanged", e))
 qldrs.setRange(0, 1)
+qldrs.setSingleStep(0.01)
 qldrs.setValue((0.2, 0.7))
 
 
-w.setLayout(QVBoxLayout() if ORIENTATION == Qt.Horizontal else QHBoxLayout())
+w.setLayout(
+    QVBoxLayout() if ORIENTATION == Qt.Orientation.Horizontal else QHBoxLayout()
+)
 w.layout().addWidget(qls)
 w.layout().addWidget(qlds)
 w.layout().addWidget(qlrs)

examples/multihandle.py

@@ -1,5 +1,6 @@
-from qtrangeslider import QRangeSlider
-from qtrangeslider.qtcompat.QtWidgets import QApplication
+from qtpy.QtWidgets import QApplication
+
+from superqt import QRangeSlider
 
 app = QApplication([])
 

examples/searchable_combo_box.py

@@ -0,0 +1,11 @@
+from qtpy.QtWidgets import QApplication
+
+from superqt import QSearchableComboBox
+
+app = QApplication([])
+
+slider = QSearchableComboBox()
+slider.addItems(["foo", "bar", "baz", "foobar", "foobaz", "barbaz"])
+slider.show()
+
+app.exec_()

examples/searchable_list_widget.py

@@ -0,0 +1,11 @@
+from qtpy.QtWidgets import QApplication
+
+from superqt import QSearchableListWidget
+
+app = QApplication([])
+
+slider = QSearchableListWidget()
+slider.addItems(["foo", "bar", "baz", "foobar", "foobaz", "barbaz"])
+slider.show()
+
+app.exec_()

examples/throttle_mouse_event.py

@@ -0,0 +1,29 @@
+from qtpy.QtCore import Signal
+from qtpy.QtWidgets import QApplication, QWidget
+
+from superqt.utils import qthrottled
+
+
+class Demo(QWidget):
+    positionChanged = Signal(int, int)
+
+    def __init__(self) -> None:
+        super().__init__()
+        self.setMouseTracking(True)
+        self.positionChanged.connect(self._show_location)
+
+    @qthrottled(timeout=400)  # call this no more than once every 400ms
+    def _show_location(self, x, y):
+        print("Throttled event at", x, y)
+
+    def mouseMoveEvent(self, event):
+        print("real move event at", event.x(), event.y())
+        self.positionChanged.emit(event.x(), event.y())
+
+
+if __name__ == "__main__":
+    app = QApplication([])
+    w = Demo()
+    w.resize(600, 600)
+    w.show()
+    app.exec_()

examples/throttler_demo.py

@@ -0,0 +1,282 @@
+"""Adapted for python from the KDToolBox
+
+https://github.com/KDAB/KDToolBox/tree/master/qt/KDSignalThrottler
+
+MIT License
+
+Copyright (C) 2019-2022 Klarälvdalens Datakonsult AB, a KDAB Group company,
+info@kdab.com
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+"""
+
+from typing import Deque
+
+from qtpy.QtCore import QRect, QSize, Qt, QTimer, Signal
+from qtpy.QtGui import QPainter, QPen
+from qtpy.QtWidgets import (
+    QApplication,
+    QCheckBox,
+    QComboBox,
+    QFormLayout,
+    QGroupBox,
+    QHBoxLayout,
+    QLabel,
+    QPushButton,
+    QSizePolicy,
+    QSpinBox,
+    QVBoxLayout,
+    QWidget,
+)
+
+from superqt.utils._throttler import (
+    GenericSignalThrottler,
+    QSignalDebouncer,
+    QSignalThrottler,
+)
+
+
+class DrawSignalsWidget(QWidget):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.setFocusPolicy(Qt.FocusPolicy.NoFocus)
+        self.setSizePolicy(QSizePolicy.MinimumExpanding, QSizePolicy.MinimumExpanding)
+        self.setAttribute(Qt.WA_OpaquePaintEvent)
+
+        self._scrollTimer = QTimer(self)
+        self._scrollTimer.setInterval(10)
+        self._scrollTimer.timeout.connect(self._scroll)
+        self._scrollTimer.start()
+
+        self._signalActivations: Deque[int] = Deque()
+        self._throttledSignalActivations: Deque[int] = Deque()
+
+    def sizeHint(self):
+        return QSize(400, 200)
+
+    def addSignalActivation(self):
+        self._signalActivations.appendleft(0)
+
+    def addThrottledSignalActivation(self):
+        self._throttledSignalActivations.appendleft(0)
+
+    def _scroll(self):
+        cutoff = self.width()
+        self.scrollAndCut(self._signalActivations, cutoff)
+        self.scrollAndCut(self._throttledSignalActivations, cutoff)
+
+        self.update()
+
+    def scrollAndCut(self, v: Deque[int], cutoff: int):
+        x = 0
+        L = len(v)
+        for p in range(L):
+            v[p] += 1
+            if v[p] > cutoff:
+                x = p
+                break
+
+        # TODO: fix this... delete old ones
+
+    def paintEvent(self, event):
+        p = QPainter(self)
+        p.fillRect(self.rect(), Qt.white)
+
+        h = self.height()
+        h2 = h // 2
+        w = self.width()
+
+        self._drawSignals(p, self._signalActivations, Qt.red, 0, h2)
+        self._drawSignals(p, self._throttledSignalActivations, Qt.blue, h2, h)
+
+        p.drawText(
+            QRect(0, 0, w, h2),
+            Qt.AlignmentFlag.AlignRight | Qt.AlignmentFlag.AlignVCenter,
+            "Source signal",
+        )
+        p.drawText(
+            QRect(0, h2, w, h2),
+            Qt.AlignmentFlag.AlignRight | Qt.AlignmentFlag.AlignVCenter,
+            "Throttled signal",
+        )
+
+        p.save()
+        pen = QPen()
+        pen.setWidthF(2.0)
+        p.drawLine(0, h2, w, h2)
+        p.restore()
+
+    def _drawSignals(self, p: QPainter, v: Deque[int], color, yStart, yEnd):
+        p.save()
+        pen = QPen()
+        pen.setWidthF(2.0)
+        pen.setColor(color)
+        p.setPen(pen)
+
+        for i in v:
+            p.drawLine(i, yStart, i, yEnd)
+        p.restore()
+
+
+class DemoWidget(QWidget):
+    signalToBeThrottled = Signal()
+    _throttler: GenericSignalThrottler
+
+    def __init__(self, parent=None) -> None:
+        super().__init__(parent)
+        self._createUi()
+        self._throttler = None
+
+        self._throttlerKindComboBox.currentIndexChanged.connect(self._createThrottler)
+        self._createThrottler()
+
+        self._throttlerTimeoutSpinBox.valueChanged.connect(self.setThrottlerTimeout)
+        self.setThrottlerTimeout()
+
+        self._mainButton.clicked.connect(self.signalToBeThrottled)
+
+        self._autoTriggerTimer = QTimer(self)
+        self._autoTriggerTimer.setTimerType(Qt.TimerType.PreciseTimer)
+        self._autoTriggerCheckBox.clicked.connect(self._startOrStopAutoTriggerTimer)
+        self._startOrStopAutoTriggerTimer()
+
+        self._autoTriggerIntervalSpinBox.valueChanged.connect(
+            self._setAutoTriggerTimeout
+        )
+        self._setAutoTriggerTimeout()
+
+        self._autoTriggerTimer.timeout.connect(self.signalToBeThrottled)
+        self.signalToBeThrottled.connect(self._drawSignalsWidget.addSignalActivation)
+
+    def _createThrottler(self) -> None:
+        if self._throttler is not None:
+            self._throttler.deleteLater()
+            del self._throttler
+
+        if self._throttlerKindComboBox.currentIndex() < 2:
+            cls = QSignalThrottler
+        else:
+            cls = QSignalDebouncer
+        if self._throttlerKindComboBox.currentIndex() % 2:
+            policy = QSignalThrottler.EmissionPolicy.Leading
+        else:
+            policy = QSignalThrottler.EmissionPolicy.Trailing
+
+        self._throttler: GenericSignalThrottler = cls(policy, self)
+
+        self._throttler.setTimerType(Qt.TimerType.PreciseTimer)
+        self.signalToBeThrottled.connect(self._throttler.throttle)
+        self._throttler.triggered.connect(
+            self._drawSignalsWidget.addThrottledSignalActivation
+        )
+
+        self.setThrottlerTimeout()
+
+    def setThrottlerTimeout(self):
+        self._throttler.setTimeout(self._throttlerTimeoutSpinBox.value())
+
+    def _startOrStopAutoTriggerTimer(self):
+        shouldStart = self._autoTriggerCheckBox.isChecked()
+        if shouldStart:
+            self._autoTriggerTimer.start()
+        else:
+            self._autoTriggerTimer.stop()
+
+        self._autoTriggerIntervalSpinBox.setEnabled(shouldStart)
+        self._autoTriggerLabel.setEnabled(shouldStart)
+
+    def _setAutoTriggerTimeout(self):
+        timeout = self._autoTriggerIntervalSpinBox.value()
+        self._autoTriggerTimer.setInterval(timeout)
+
+    def _createUi(self):
+        helpLabel = QLabel(self)
+        helpLabel.setWordWrap(True)
+        helpLabel.setText(
+            "<h2>SignalThrottler example</h2>"
+            "<p>This example demonstrates the differences between "
+            "the different kinds of signal throttlers and debouncers."
+        )
+
+        throttlerKindGroupBox = QGroupBox("Throttler configuration", self)
+
+        self._throttlerKindComboBox = QComboBox(throttlerKindGroupBox)
+        self._throttlerKindComboBox.addItems(
+            (
+                "Throttler, trailing",
+                "Throttler, leading",
+                "Debouncer, trailing",
+                "Debouncer, leading",
+            )
+        )
+
+        self._throttlerTimeoutSpinBox = QSpinBox(throttlerKindGroupBox)
+        self._throttlerTimeoutSpinBox.setRange(1, 5000)
+        self._throttlerTimeoutSpinBox.setValue(500)
+        self._throttlerTimeoutSpinBox.setSuffix(" ms")
+
+        layout = QFormLayout(throttlerKindGroupBox)
+        layout.addRow("Kind of throttler:", self._throttlerKindComboBox)
+        layout.addRow("Timeout:", self._throttlerTimeoutSpinBox)
+        throttlerKindGroupBox.setLayout(layout)
+
+        buttonGroupBox = QGroupBox("Throttler activation")
+        self._mainButton = QPushButton(("Press me!"), buttonGroupBox)
+
+        self._autoTriggerCheckBox = QCheckBox("Trigger automatically")
+
+        autoTriggerLayout = QHBoxLayout()
+        self._autoTriggerLabel = QLabel("Interval", buttonGroupBox)
+        self._autoTriggerIntervalSpinBox = QSpinBox(buttonGroupBox)
+        self._autoTriggerIntervalSpinBox.setRange(1, 5000)
+        self._autoTriggerIntervalSpinBox.setValue(100)
+        self._autoTriggerIntervalSpinBox.setSuffix(" ms")
+
+        autoTriggerLayout.setContentsMargins(0, 0, 0, 0)
+        autoTriggerLayout.addWidget(self._autoTriggerLabel)
+        autoTriggerLayout.addWidget(self._autoTriggerIntervalSpinBox)
+
+        layout = QVBoxLayout(buttonGroupBox)
+        layout.addWidget(self._mainButton)
+        layout.addWidget(self._autoTriggerCheckBox)
+        layout.addLayout(autoTriggerLayout)
+        buttonGroupBox.setLayout(layout)
+
+        resultGroupBox = QGroupBox("Result")
+        self._drawSignalsWidget = DrawSignalsWidget(resultGroupBox)
+        layout = QVBoxLayout(resultGroupBox)
+        layout.addWidget(self._drawSignalsWidget)
+        resultGroupBox.setLayout(layout)
+
+        layout = QVBoxLayout(self)
+        layout.addWidget(helpLabel)
+        layout.addWidget(throttlerKindGroupBox)
+        layout.addWidget(buttonGroupBox)
+        layout.addWidget(resultGroupBox)
+
+        self.setLayout(layout)
+
+
+if __name__ == "__main__":
+    app = QApplication([__name__])
+    w = DemoWidget()
+    w.resize(600, 600)
+    w.show()
+    app.exec_()

pyproject.toml

@@ -1,3 +1,10 @@
 # pyproject.toml
 [build-system]
 requires = ["setuptools>=45", "wheel", "setuptools_scm[toml]>=6.0"]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools_scm]
+write_to = "src/superqt/_version.py"
+
+[tool.check-manifest]
+ignore = ["src/superqt/_version.py"]

qtrangeslider/_float_slider.py

@@ -1,96 +0,0 @@
-import math
-from typing import Tuple
-
-from ._hooked import _HookedSlider
-from ._qrangeslider import QRangeSlider
-from .qtcompat.QtCore import Signal
-
-
-class QDoubleSlider(_HookedSlider):
-
-    valueChanged = Signal(float)
-    rangeChanged = Signal(float, float)
-    sliderMoved = Signal(float)
-    _multiplier = 1
-
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-        self._multiplier = 10 ** 2
-        self.setMinimum(0)
-        self.setMaximum(99)
-        self.setSingleStep(1)
-        self.setPageStep(10)
-        super().sliderMoved.connect(
-            lambda e: self.sliderMoved.emit(self._post_get_hook(e))
-        )
-
-    def decimals(self) -> int:
-        """This property holds the precision of the slider, in decimals."""
-        return int(math.log10(self._multiplier))
-
-    def setDecimals(self, prec: int):
-        """This property holds the precision of the slider, in decimals
-
-        Sets how many decimals the slider uses for displaying and interpreting doubles.
-        """
-        previous = self._multiplier
-        self._multiplier = 10 ** int(prec)
-        ratio = self._multiplier / previous
-
-        if ratio != 1:
-            self.blockSignals(True)
-            try:
-                newmin = self.minimum() * ratio
-                newmax = self.maximum() * ratio
-                newval = self._scale_value(ratio)
-                newstep = self.singleStep() * ratio
-                newpage = self.pageStep() * ratio
-                self.setRange(newmin, newmax)
-                self.setValue(newval)
-                self.setSingleStep(newstep)
-                self.setPageStep(newpage)
-            except OverflowError as err:
-                self._multiplier = previous
-                raise OverflowError(
-                    f"Cannot use {prec} decimals with a range of {newmin}-"
-                    f"{newmax}. If you need this feature, please open a feature"
-                    " request at github."
-                ) from err
-            self.blockSignals(False)
-
-    def _scale_value(self, p):
-        # for subclasses
-        return self.value() * p
-
-    def _post_get_hook(self, value: int) -> float:
-        return float(value / self._multiplier)
-
-    def _pre_set_hook(self, value: float) -> int:
-        return int(value * self._multiplier)
-
-    def sliderChange(self, change) -> None:
-        if change == self.SliderValueChange:
-            self.valueChanged.emit(self.value())
-        if change == self.SliderRangeChange:
-            self.rangeChanged.emit(self.minimum(), self.maximum())
-        return super().sliderChange(self.SliderChange(change))
-
-
-class QDoubleRangeSlider(QRangeSlider, QDoubleSlider):
-    rangeChanged = Signal(float, float)
-
-    def value(self) -> Tuple[float, ...]:
-        """Get current value of the widget as a tuple of integers."""
-        return tuple(float(i) for i in self._value)
-
-    def _min_max_bound(self, val: int) -> float:
-        return round(super()._min_max_bound(val), self.decimals())
-
-    def _scale_value(self, p):
-        # This function is called during setDecimals...
-        # but because QRangeSlider has a private nonQt `_value`
-        # we don't actually need to scale
-        return self._value
-
-    def setDecimals(self, prec: int):
-        return super().setDecimals(prec)

qtrangeslider/_hooked.py

@@ -1,42 +0,0 @@
-from .qtcompat.QtWidgets import QSlider
-
-
-class _HookedSlider(QSlider):
-    def _post_get_hook(self, value):
-        return value
-
-    def _pre_set_hook(self, value):
-        return value
-
-    def value(self):
-        return self._post_get_hook(super().value())
-
-    def setValue(self, value) -> None:
-        super().setValue(self._pre_set_hook(value))
-
-    def minimum(self):
-        return self._post_get_hook(super().minimum())
-
-    def setMinimum(self, minimum):
-        super().setMinimum(self._pre_set_hook(minimum))
-
-    def maximum(self):
-        return self._post_get_hook(super().maximum())
-
-    def setMaximum(self, maximum):
-        super().setMaximum(self._pre_set_hook(maximum))
-
-    def singleStep(self):
-        return self._post_get_hook(super().singleStep())
-
-    def setSingleStep(self, step):
-        super().setSingleStep(self._pre_set_hook(step))
-
-    def pageStep(self):
-        return self._post_get_hook(super().pageStep())
-
-    def setPageStep(self, step) -> None:
-        super().setPageStep(self._pre_set_hook(step))
-
-    def setRange(self, min: float, max: float) -> None:
-        super().setRange(self._pre_set_hook(min), self._pre_set_hook(max))

qtrangeslider/_qrangeslider.py

@@ -1,585 +0,0 @@
-import textwrap
-from collections import abc
-from typing import List, Sequence, Tuple
-
-from ._hooked import _HookedSlider
-from ._style import RangeSliderStyle, update_styles_from_stylesheet
-from .qtcompat import QtGui
-from .qtcompat.QtCore import (
-    Property,
-    QEvent,
-    QPoint,
-    QPointF,
-    QRect,
-    QRectF,
-    Qt,
-    Signal,
-)
-from .qtcompat.QtWidgets import (
-    QApplication,
-    QSlider,
-    QStyle,
-    QStyleOptionSlider,
-    QStylePainter,
-)
-
-ControlType = Tuple[str, int]
-
-
-class QRangeSlider(_HookedSlider, QSlider):
-    """MultiHandle Range Slider widget.
-
-    Same API as QSlider, but `value`, `setValue`, `sliderPosition`, and
-    `setSliderPosition` are all sequences of integers.
-
-    The `valueChanged` and `sliderMoved` signals also both emit a tuple of
-    integers.
-    """
-
-    # Emitted when the slider value has changed, with the new slider values
-    valueChanged = Signal(tuple)
-
-    # Emitted when sliderDown is true and the slider moves
-    # This usually happens when the user is dragging the slider
-    # The value is the positions of *all* handles.
-    sliderMoved = Signal(tuple)
-
-    _NULL_CTRL = ("None", -1)
-
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-
-        # list of values
-        self._value: List[int] = [20, 80]
-
-        # list of current positions of each handle. same length as _value
-        # If tracking is enabled (the default) this will be identical to _value
-        self._position: List[int] = [20, 80]
-        self._pressedControl: ControlType = self._NULL_CTRL
-        self._hoverControl: ControlType = self._NULL_CTRL
-
-        # whether bar length is constant when dragging the bar
-        # if False, the bar can shorten when dragged beyond min/max
-        self._bar_is_rigid = True
-        # whether clicking on the bar moves all handles, or just the nearest handle
-        self._bar_moves_all = True
-        self._should_draw_bar = True
-
-        # for keyboard nav
-        self._repeatMultiplier = 1  # TODO
-        # for wheel nav
-        self._offset_accum = 0
-        # fraction of total range to scroll when holding Ctrl while scrolling
-        self._control_fraction = 0.04
-
-        # color
-        self._style = RangeSliderStyle()
-        self.setStyleSheet("")
-        update_styles_from_stylesheet(self)
-
-    # ###############  Public API  #######################
-
-    def setStyleSheet(self, styleSheet: str) -> None:
-        # sub-page styles render on top of the lower sliders and don't work here.
-        override = f"""
-            \n{type(self).__name__}::sub-page:horizontal {{background: none}}
-            \n{type(self).__name__}::sub-page:vertical {{background: none}}
-        """
-        return super().setStyleSheet(styleSheet + override)
-
-    def value(self) -> Tuple[int, ...]:
-        """Get current value of the widget as a tuple of integers."""
-        return tuple(self._value)
-
-    def setValue(self, val: Sequence[int]) -> None:
-        """Set current value of the widget with a sequence of integers.
-
-        The number of handles will be equal to the length of the sequence
-        """
-        if not (isinstance(val, abc.Sequence) and len(val) >= 2):
-            raise ValueError("value must be iterable of len >= 2")
-        val = [self._min_max_bound(v) for v in val]
-        if self._value == val and self._position == val:
-            return
-        self._value[:] = val[:]
-        if self._position != val:
-            self._position = val
-            if self.isSliderDown():
-                self.sliderMoved.emit(tuple(self._position))
-
-        self.sliderChange(QSlider.SliderValueChange)
-        self.valueChanged.emit(self.value())
-
-    def sliderPosition(self) -> Tuple[int, ...]:
-        """Get current value of the widget as a tuple of integers.
-
-        If tracking is enabled (the default) this will be identical to value().
-        """
-        return tuple(self._position)
-
-    def setSliderPosition(self, val: Sequence[int]) -> None:
-        """Set current position of the handles with a sequence of integers.
-
-        The sequence must have the same length as `value()`.
-        """
-        if len(val) != len(self.value()):
-            raise ValueError(
-                f"'sliderPosition' must have length of 'value()' ({len(self.value())})"
-            )
-
-        for i, v in enumerate(val):
-            self._setSliderPositionAt(i, v, _update=False)
-        self._updateSliderMove()
-
-    def barIsRigid(self) -> bool:
-        """Whether bar length is constant when dragging the bar.
-
-        If False, the bar can shorten when dragged beyond min/max. Default is True.
-        """
-        return self._bar_is_rigid
-
-    def setBarIsRigid(self, val: bool = True) -> None:
-        """Whether bar length is constant when dragging the bar.
-
-        If False, the bar can shorten when dragged beyond min/max. Default is True.
-        """
-        self._bar_is_rigid = bool(val)
-
-    def barMovesAllHandles(self) -> bool:
-        """Whether clicking on the bar moves all handles (default), or just the nearest."""
-        return self._bar_moves_all
-
-    def setBarMovesAllHandles(self, val: bool = True) -> None:
-        """Whether clicking on the bar moves all handles (default), or just the nearest."""
-        self._bar_moves_all = bool(val)
-
-    def barIsVisible(self) -> bool:
-        """Whether to show the bar between the first and last handle."""
-        return self._should_draw_bar
-
-    def setBarVisible(self, val: bool = True) -> None:
-        """Whether to show the bar between the first and last handle."""
-        self._should_draw_bar = bool(val)
-
-    def hideBar(self) -> None:
-        self.setBarVisible(False)
-
-    def showBar(self) -> None:
-        self.setBarVisible(True)
-
-    # ###############  Implementation Details  #######################
-
-    def _setSliderPositionAt(self, index: int, pos: int, _update=True) -> None:
-        pos = self._min_max_bound(pos)
-        # prevent sliders from moving beyond their neighbors
-        pos = self._neighbor_bound(pos, index, self._position)
-        if pos == self._position[index]:
-            return
-
-        self._position[index] = pos
-        if _update:
-            self._updateSliderMove()
-
-    def _updateSliderMove(self):
-        if not self.hasTracking():
-            self.update()
-        if self.isSliderDown():
-            self.sliderMoved.emit(tuple(self._position))
-        if self.hasTracking():
-            self.triggerAction(QSlider.SliderMove)
-
-    def _offsetAllPositions(self, offset: int, ref=None) -> None:
-        if ref is None:
-            ref = self._position
-        if self._bar_is_rigid:
-            # NOTE: This assumes monotonically increasing slider positions
-            if offset > 0 and ref[-1] + offset > self.maximum():
-                offset = self.maximum() - ref[-1]
-            elif ref[0] + offset < self.minimum():
-                offset = self.minimum() - ref[0]
-        self.setSliderPosition([i + offset for i in ref])
-
-    def _spreadAllPositions(self, shrink=False, gain=1.1, ref=None) -> None:
-        if ref is None:
-            ref = self._position
-        # if self._bar_is_rigid:  # TODO
-
-        if shrink:
-            gain = 1 / gain
-        center = abs(ref[-1] + ref[0]) / 2
-        self.setSliderPosition([((i - center) * gain) + center for i in ref])
-
-    def _getStyleOption(self) -> QStyleOptionSlider:
-        opt = QStyleOptionSlider()
-        self.initStyleOption(opt)
-        opt.sliderValue = 0
-        opt.sliderPosition = 0
-        return opt
-
-    def _getBarColor(self):
-        return self._style.brush(self._getStyleOption())
-
-    def _setBarColor(self, color):
-        self._style.brush_active = color
-
-    barColor = Property(QtGui.QBrush, _getBarColor, _setBarColor)
-
-    def _drawBar(self, painter: QStylePainter, opt: QStyleOptionSlider):
-
-        brush = self._style.brush(opt)
-
-        r_bar = self._barRect(opt)
-        if isinstance(brush, QtGui.QGradient):
-            brush.setStart(r_bar.topLeft())
-            brush.setFinalStop(r_bar.bottomRight())
-
-        painter.setPen(self._style.pen(opt))
-        painter.setBrush(brush)
-        painter.drawRect(r_bar)
-
-    def paintEvent(self, a0: QtGui.QPaintEvent) -> None:
-        """Paint the slider."""
-        # initialize painter and options
-        painter = QStylePainter(self)
-        opt = self._getStyleOption()
-
-        # draw groove and ticks
-        opt.subControls = QStyle.SC_SliderGroove | QStyle.SC_SliderTickmarks
-        painter.drawComplexControl(QStyle.CC_Slider, opt)
-
-        if self._should_draw_bar:
-            self._drawBar(painter, opt)
-
-        # draw handles
-        opt.subControls = QStyle.SC_SliderHandle
-        hidx = -1
-        pidx = -1
-        if self._pressedControl[0] == "handle":
-            pidx = self._pressedControl[1]
-        elif self._hoverControl[0] == "handle":
-            hidx = self._hoverControl[1]
-        for idx, pos in enumerate(self._position):
-            opt.sliderPosition = self._pre_set_hook(pos)
-
-            if idx == pidx:  # make pressed handles appear sunken
-                opt.state |= QStyle.State_Sunken
-            else:
-                opt.state = opt.state & ~QStyle.State_Sunken
-            if idx == hidx:
-                opt.activeSubControls = QStyle.SC_SliderHandle
-            else:
-                opt.activeSubControls = QStyle.SC_None
-            painter.drawComplexControl(QStyle.CC_Slider, opt)
-
-    def event(self, ev: QEvent) -> bool:
-        if ev.type() == QEvent.WindowActivate:
-            self.update()
-        if ev.type() == QEvent.StyleChange:
-            update_styles_from_stylesheet(self)
-        if ev.type() in (QEvent.HoverEnter, QEvent.HoverLeave, QEvent.HoverMove):
-            old_hover = self._hoverControl
-            self._hoverControl = self._getControlAtPos(ev.pos())
-            if self._hoverControl != old_hover:
-                self.update()  # TODO: restrict to the rect of old_hover
-        return super().event(ev)
-
-    def mousePressEvent(self, ev: QtGui.QMouseEvent) -> None:
-        if self.minimum() == self.maximum() or ev.buttons() ^ ev.button():
-            ev.ignore()
-            return
-
-        ev.accept()
-        # FIXME: why not working on other styles?
-        # set_buttons = self.style().styleHint(QStyle.SH_Slider_AbsoluteSetButtons)
-        set_buttons = Qt.LeftButton | Qt.MiddleButton
-
-        # If the mouse button used is allowed to set the value
-        if ev.buttons() & set_buttons == ev.button():
-            opt = self._getStyleOption()
-
-            self._pressedControl = self._getControlAtPos(ev.pos(), opt, True)
-
-            if self._pressedControl[0] == "handle":
-                offset = self._handle_offset(opt)
-                new_pos = self._pixelPosToRangeValue(self._pick(ev.pos() - offset))
-                self._setSliderPositionAt(self._pressedControl[1], new_pos)
-                self.triggerAction(QSlider.SliderMove)
-                self.setRepeatAction(QSlider.SliderNoAction)
-            self.update()
-
-        if self._pressedControl[0] == "handle":
-            self.setRepeatAction(QSlider.SliderNoAction)  # why again?
-            sr = self._handleRects(opt, self._pressedControl[1])
-            self._clickOffset = self._pick(ev.pos() - sr.topLeft())
-            self.update()
-            self.setSliderDown(True)
-        elif self._pressedControl[0] == "bar":
-            self.setRepeatAction(QSlider.SliderNoAction)  # why again?
-            self._clickOffset = self._pixelPosToRangeValue(self._pick(ev.pos()))
-            self._sldPosAtPress = tuple(self._position)
-            self.update()
-            self.setSliderDown(True)
-
-    def mouseMoveEvent(self, ev: QtGui.QMouseEvent) -> None:
-        # TODO: add pixelMetric(QStyle::PM_MaximumDragDistance, &opt, this);
-        if self._pressedControl[0] == "handle":
-            ev.accept()
-            new = self._pixelPosToRangeValue(self._pick(ev.pos()) - self._clickOffset)
-            self._setSliderPositionAt(self._pressedControl[1], new)
-        elif self._pressedControl[0] == "bar":
-            ev.accept()
-
-            delta = self._clickOffset - self._pixelPosToRangeValue(self._pick(ev.pos()))
-            self._offsetAllPositions(-delta, self._sldPosAtPress)
-        else:
-            ev.ignore()
-            return
-
-    def mouseReleaseEvent(self, ev: QtGui.QMouseEvent) -> None:
-        if self._pressedControl[0] == "None" or ev.buttons():
-            ev.ignore()
-            return
-        ev.accept()
-        old_pressed = self._pressedControl
-        self._pressedControl = self._NULL_CTRL
-        self.setRepeatAction(QSlider.SliderNoAction)
-        if old_pressed[0] in ("handle", "bar"):
-            self.setSliderDown(False)
-        self.update()  # TODO: restrict to the rect of old_pressed
-
-    def triggerAction(self, action: QSlider.SliderAction) -> None:
-        super().triggerAction(action)  # TODO: probably need to override.
-        self.setValue(self._position)
-
-    def setRange(self, min: int, max: int) -> None:
-        super().setRange(min, max)
-        self.setValue(self._value)  # re-bound
-
-    def _handleRects(
-        self, opt: QStyleOptionSlider = None, handle_index: int = None
-    ) -> QRect:
-        """Return the QRect for all handles."""
-        if opt is None:
-            opt = self._getStyleOption()
-
-        style = self.style().proxy()
-
-        if handle_index is not None:  # get specific handle rect
-            opt.sliderPosition = self._pre_set_hook(self._position[handle_index])
-            return style.subControlRect(
-                QStyle.CC_Slider, opt, QStyle.SC_SliderHandle, self
-            )
-        else:
-            rects = []
-            for p in self._position:
-                opt.sliderPosition = self._pre_set_hook(p)
-                r = style.subControlRect(
-                    QStyle.CC_Slider, opt, QStyle.SC_SliderHandle, self
-                )
-                rects.append(r)
-            return rects
-
-    def _grooveRect(self, opt: QStyleOptionSlider) -> QRect:
-        """Return the QRect for the slider groove."""
-        style = self.style().proxy()
-        return style.subControlRect(QStyle.CC_Slider, opt, QStyle.SC_SliderGroove, self)
-
-    def _barRect(self, opt: QStyleOptionSlider, r_groove: QRect = None) -> QRect:
-        """Return the QRect for the bar between the outer handles."""
-        if r_groove is None:
-            r_groove = self._grooveRect(opt)
-        r_bar = QRectF(r_groove)
-        hdl_low, *_, hdl_high = self._handleRects(opt)
-
-        thickness = self._style.thickness(opt)
-        offset = self._style.offset(opt)
-
-        if opt.orientation == Qt.Horizontal:
-            r_bar.setTop(r_bar.center().y() - thickness / 2 + offset)
-            r_bar.setHeight(thickness)
-            r_bar.setLeft(hdl_low.center().x())
-            r_bar.setRight(hdl_high.center().x())
-        else:
-            r_bar.setLeft(r_bar.center().x() - thickness / 2 + offset)
-            r_bar.setWidth(thickness)
-            r_bar.setBottom(hdl_low.center().y())
-            r_bar.setTop(hdl_high.center().y())
-
-        return r_bar
-
-    def _getControlAtPos(
-        self, pos: QPoint, opt: QStyleOptionSlider = None, closest_handle=False
-    ) -> ControlType:
-        """Update self._pressedControl based on ev.pos()."""
-        if not opt:
-            opt = self._getStyleOption()
-
-        event_position = self._pick(pos)
-        bar_idx = 0
-        hdl_idx = 0
-        dist = float("inf")
-
-        if isinstance(pos, QPointF):
-            pos = QPoint(pos.x(), pos.y())
-        # TODO: this should be reversed, to prefer higher value handles
-        for i, hdl in enumerate(self._handleRects(opt)):
-            if hdl.contains(pos):
-                return ("handle", i)  # TODO: use enum for 'handle'
-            hdl_center = self._pick(hdl.center())
-            abs_dist = abs(event_position - hdl_center)
-            if abs_dist < dist:
-                dist = abs_dist
-                hdl_idx = i
-            if event_position > hdl_center:
-                bar_idx += 1
-        else:
-            if closest_handle:
-                if bar_idx == 0:
-                    # the click was below the minimum slider
-                    return ("handle", 0)
-                elif bar_idx == len(self._position):
-                    # the click was above the maximum slider
-                    return ("handle", len(self._position) - 1)
-            if self._bar_moves_all:
-                # the click was in an internal segment
-                return ("bar", bar_idx)
-            elif closest_handle:
-                return ("handle", hdl_idx)
-
-        return self._NULL_CTRL
-
-    def _handle_offset(self, opt: QStyleOptionSlider) -> QPoint:
-        # to take half of the slider off for the setSliderPosition call we use the
-        # center - topLeft
-        handle_rect = self._handleRects(opt, 0)
-        return handle_rect.center() - handle_rect.topLeft()
-
-    # from QSliderPrivate::pixelPosToRangeValue
-    def _pixelPosToRangeValue(self, pos: int, opt: QStyleOptionSlider = None) -> int:
-        if not opt:
-            opt = self._getStyleOption()
-        groove_rect = self._grooveRect(opt)
-        handle_rect = self._handleRects(opt, 0)
-        if self.orientation() == Qt.Horizontal:
-            sliderLength = handle_rect.width()
-            sliderMin = groove_rect.x()
-            sliderMax = groove_rect.right() - sliderLength + 1
-        else:
-            sliderLength = handle_rect.height()
-            sliderMin = groove_rect.y()
-            sliderMax = groove_rect.bottom() - sliderLength + 1
-        v = QStyle.sliderValueFromPosition(
-            opt.minimum,
-            opt.maximum,
-            pos - sliderMin,
-            sliderMax - sliderMin,
-            opt.upsideDown,
-        )
-        return self._post_get_hook(v)
-
-    def _pick(self, pt: QPoint) -> int:
-        return pt.x() if self.orientation() == Qt.Horizontal else pt.y()
-
-    def _min_max_bound(self, val: int) -> int:
-        return _bound(self.minimum(), self.maximum(), val)
-
-    def _neighbor_bound(self, val: int, index: int, _lst: List[int]) -> int:
-        # make sure we don't go lower than any preceding index:
-        min_dist = self._post_get_hook(self.singleStep())
-        if index > 0:
-            val = max(_lst[index - 1] + min_dist, val)
-        # make sure we don't go higher than any following index:
-        if index < (len(_lst) - 1):
-            val = min(_lst[index + 1] - min_dist, val)
-        return val
-
-    def wheelEvent(self, e: QtGui.QWheelEvent) -> None:
-        e.ignore()
-        vertical = bool(e.angleDelta().y())
-        delta = e.angleDelta().y() if vertical else e.angleDelta().x()
-        if e.inverted():
-            delta *= -1
-
-        orientation = Qt.Vertical if vertical else Qt.Horizontal
-        if self._scrollByDelta(orientation, e.modifiers(), delta):
-            e.accept()
-
-    def _scrollByDelta(self, orientation, modifiers, delta: int) -> bool:
-        steps_to_scroll = 0
-        pg_step = self.pageStep()
-
-        # in Qt scrolling to the right gives negative values.
-        if orientation == Qt.Horizontal:
-            delta *= -1
-        offset = delta / 120
-        if modifiers & Qt.ShiftModifier:
-            # Scroll one page regardless of delta:
-            steps_to_scroll = _bound(-pg_step, pg_step, int(offset * pg_step))
-            self._offset_accum = 0
-        elif modifiers & Qt.ControlModifier:
-            # Scroll one page regardless of delta:
-            _range = self._pre_set_hook(self.maximum()) - self._pre_set_hook(
-                self.minimum()
-            )
-            steps_to_scroll = offset * _range * self._control_fraction
-            self._offset_accum = 0
-        else:
-            # Calculate how many lines to scroll. Depending on what delta is (and
-            # offset), we might end up with a fraction (e.g. scroll 1.3 lines). We can
-            # only scroll whole lines, so we keep the reminder until next event.
-            wheel_scroll_lines = QApplication.wheelScrollLines()
-            steps_to_scrollF = wheel_scroll_lines * offset * self._effectiveSingleStep()
-
-            # Check if wheel changed direction since last event:
-            if self._offset_accum != 0 and (offset / self._offset_accum) < 0:
-                self._offset_accum = 0
-
-            self._offset_accum += steps_to_scrollF
-
-            # Don't scroll more than one page in any case:
-            steps_to_scroll = _bound(-pg_step, pg_step, int(self._offset_accum))
-
-            self._offset_accum -= int(self._offset_accum)
-
-            if steps_to_scroll == 0:
-                # We moved less than a line, but might still have accumulated partial
-                # scroll, unless we already are at one of the ends.
-                effective_offset = self._offset_accum
-                if self.invertedControls():
-                    effective_offset *= -1
-                if effective_offset > 0 and max(self._value) < self.maximum():
-                    return True
-                if effective_offset < 0 and min(self._value) < self.minimum():
-                    return True
-                self._offset_accum = 0
-                return False
-
-        if self.invertedControls():
-            steps_to_scroll *= -1
-
-        _prev_value = self.value()
-
-        if modifiers & Qt.AltModifier:
-            self._spreadAllPositions(shrink=steps_to_scroll < 0)
-        else:
-            self._offsetAllPositions(self._post_get_hook(steps_to_scroll))
-        self.triggerAction(QSlider.SliderMove)
-
-        if _prev_value == self.value():
-            self._offset_accum = 0
-            return False
-        return True
-
-    def _effectiveSingleStep(self) -> int:
-        return self.singleStep() * self._repeatMultiplier
-
-    def keyPressEvent(self, ev: QtGui.QKeyEvent) -> None:
-        return  # TODO
-
-
-def _bound(min_: int, max_: int, value: int) -> int:
-    """Return value bounded by min_ and max_."""
-    return max(min_, min(max_, value))
-
-
-QRangeSlider.__doc__ += "\n" + textwrap.indent(QSlider.__doc__, "    ")

qtrangeslider/qtcompat/QtCore.py

@@ -1,57 +0,0 @@
-# -*- coding: utf-8 -*-
-#
-# Copyright © 2014-2015 Colin Duquesnoy
-# Copyright © 2009- The Spyder Development Team
-#
-# Licensed under the terms of the MIT License
-# (see LICENSE.txt for details)
-
-"""
-Modified from qtpy.QtCore.
-Provides QtCore classes and functions.
-"""
-
-from . import PYQT5, PYQT6, PYSIDE2, PYSIDE6, PythonQtError
-
-if PYQT5:
-    from PyQt5.QtCore import QT_VERSION_STR as __version__
-    from PyQt5.QtCore import *
-    from PyQt5.QtCore import pyqtProperty as Property  # noqa
-    from PyQt5.QtCore import pyqtSignal as Signal  # noqa
-    from PyQt5.QtCore import pyqtSlot as Slot  # noqa
-
-    # Those are imported from `import *`
-    del pyqtSignal, pyqtBoundSignal, pyqtSlot, pyqtProperty, QT_VERSION_STR
-elif PYQT6:
-    from PyQt6.QtCore import QT_VERSION_STR as __version__
-    from PyQt6.QtCore import *
-    from PyQt6.QtCore import pyqtProperty as Property  # noqa
-    from PyQt6.QtCore import pyqtSignal as Signal  # noqa
-    from PyQt6.QtCore import pyqtSlot as Slot  # noqa
-
-    # backwards compat with PyQt5
-    # namespace moves:
-    for cls in (QEvent, Qt):
-        for attr in dir(cls):
-            if not attr[0].isupper():
-                continue
-            ns = getattr(cls, attr)
-            for name, val in vars(ns).items():
-                if not name.startswith("_"):
-                    setattr(cls, name, val)
-
-    # Those are imported from `import *`
-    del pyqtSignal, pyqtBoundSignal, pyqtSlot, pyqtProperty, QT_VERSION_STR
-elif PYSIDE2:
-    import PySide2.QtCore
-    from PySide2.QtCore import *  # noqa
-
-    __version__ = PySide2.QtCore.__version__
-elif PYSIDE6:
-    import PySide6.QtCore
-    from PySide6.QtCore import *  # noqa
-
-    __version__ = PySide6.QtCore.__version__
-
-else:
-    raise PythonQtError("No Qt bindings could be found")

qtrangeslider/qtcompat/QtGui.py

@@ -1,43 +0,0 @@
-# -*- coding: utf-8 -*-
-#
-# Copyright © 2014-2015 Colin Duquesnoy
-# Copyright © 2009- The Spyder Development Team
-#
-# Licensed under the terms of the MIT License
-# (see LICENSE.txt for details)
-
-"""
-Modified from qtpy.QtGui
-Provides QtGui classes and functions.
-"""
-
-from . import PYQT5, PYQT6, PYSIDE2, PYSIDE6, PythonQtError
-
-if PYQT5:
-    from PyQt5.QtGui import *
-elif PYSIDE2:
-    from PySide2.QtGui import *
-elif PYQT6:
-    from PyQt6.QtGui import *
-
-    # backwards compat with PyQt5
-    # namespace moves:
-    for cls in (QPalette,):
-        for attr in dir(cls):
-            if not attr[0].isupper():
-                continue
-            ns = getattr(cls, attr)
-            for name, val in vars(ns).items():
-                if not name.startswith("_"):
-                    setattr(cls, name, val)
-
-    def pos(self, *a):
-        _pos = self.position(*a)
-        return _pos.toPoint()
-
-    QMouseEvent.pos = pos
-
-elif PYSIDE6:
-    from PySide6.QtGui import *  # noqa
-else:
-    raise PythonQtError("No Qt bindings could be found")

qtrangeslider/qtcompat/QtWidgets.py

@@ -1,43 +0,0 @@
-# -*- coding: utf-8 -*-
-#
-# Copyright © 2014-2015 Colin Duquesnoy
-# Copyright © 2009- The Spyder Developmet Team
-#
-# Licensed under the terms of the MIT License
-# (see LICENSE.txt for details)
-
-"""
-Modified from qtpy.QtWidgets
-Provides widget classes and functions.
-"""
-
-from . import PYQT5, PYQT6, PYSIDE2, PYSIDE6, PythonQtError
-
-if PYQT5:
-    from PyQt5.QtWidgets import *
-elif PYSIDE2:
-    from PySide2.QtWidgets import *
-elif PYQT6:
-    from PyQt6.QtWidgets import *
-
-    # backwards compat with PyQt5
-    # namespace moves:
-    for cls in (QStyle, QSlider, QSizePolicy, QSpinBox):
-        for attr in dir(cls):
-            if not attr[0].isupper():
-                continue
-            ns = getattr(cls, attr)
-            for name, val in vars(ns).items():
-                if not name.startswith("_"):
-                    setattr(cls, name, val)
-
-    def exec_(self):
-        self.exec()
-
-    QApplication.exec_ = exec_
-
-elif PYSIDE6:
-    from PySide6.QtWidgets import *  # noqa
-
-else:
-    raise PythonQtError("No Qt bindings could be found")

qtrangeslider/qtcompat/__init__.py

@@ -1,167 +0,0 @@
-# -*- coding: utf-8 -*-
-#
-# Copyright © 2009- The Spyder Development Team
-# Copyright © 2014-2015 Colin Duquesnoy
-#
-# Licensed under the terms of the MIT License
-# (see LICENSE.txt for details)
-
-"""
-This file is borrowed from qtpy and modified to support PySide6/PyQt6 (drops PyQt4)
-"""
-
-import os
-import platform
-import sys
-import warnings
-from distutils.version import LooseVersion
-
-
-class PythonQtError(RuntimeError):
-    """Error raise if no bindings could be selected."""
-
-
-class PythonQtWarning(Warning):
-    """Warning if some features are not implemented in a binding."""
-
-
-# Qt API environment variable name
-QT_API = "QT_API"
-
-# Names of the expected PyQt5 api
-PYQT5_API = ["pyqt5"]
-
-# Names of the expected PyQt6 api
-PYQT6_API = ["pyqt6"]
-
-# Names of the expected PySide2 api
-PYSIDE2_API = ["pyside2"]
-
-# Names of the expected PySide6 api
-PYSIDE6_API = ["pyside6"]
-
-# Detecting if a binding was specified by the user
-binding_specified = QT_API in os.environ
-
-# Setting a default value for QT_API
-os.environ.setdefault(QT_API, "pyqt5")
-
-API = os.environ[QT_API].lower()
-initial_api = API
-assert API in (PYQT5_API + PYQT6_API + PYSIDE2_API + PYSIDE6_API)
-
-PYQT5 = True
-PYSIDE2 = PYQT6 = PYSIDE6 = False
-
-# When `FORCE_QT_API` is set, we disregard
-# any previously imported python bindings.
-if os.environ.get("FORCE_QT_API") is not None:
-    if "PyQt5" in sys.modules:
-        API = initial_api if initial_api in PYQT5_API else "pyqt5"
-    elif "PySide2" in sys.modules:
-        API = initial_api if initial_api in PYSIDE2_API else "pyside2"
-    elif "PyQt6" in sys.modules:
-        API = initial_api if initial_api in PYQT6_API else "pyqt6"
-    elif "PySide6" in sys.modules:
-        API = initial_api if initial_api in PYSIDE6_API else "pyside6"
-
-
-if API in PYQT5_API:
-    try:
-        from PyQt5.QtCore import PYQT_VERSION_STR as PYQT_VERSION  # noqa
-        from PyQt5.QtCore import QT_VERSION_STR as QT_VERSION  # noqa
-
-        PYSIDE_VERSION = None  # noqa
-
-        if sys.platform == "darwin":
-            macos_version = LooseVersion(platform.mac_ver()[0])
-            if macos_version < LooseVersion("10.10"):
-                if LooseVersion(QT_VERSION) >= LooseVersion("5.9"):
-                    raise PythonQtError(
-                        "Qt 5.9 or higher only works in "
-                        "macOS 10.10 or higher. Your "
-                        "program will fail in this "
-                        "system."
-                    )
-            elif macos_version < LooseVersion("10.11"):
-                if LooseVersion(QT_VERSION) >= LooseVersion("5.11"):
-                    raise PythonQtError(
-                        "Qt 5.11 or higher only works in "
-                        "macOS 10.11 or higher. Your "
-                        "program will fail in this "
-                        "system."
-                    )
-
-            del macos_version
-    except ImportError:
-        API = os.environ["QT_API"] = "pyside2"
-
-if API in PYSIDE2_API:
-    try:
-        from PySide2 import __version__ as PYSIDE_VERSION  # noqa
-        from PySide2.QtCore import __version__ as QT_VERSION  # noqa
-
-        PYQT_VERSION = None  # noqa
-        PYQT5 = False
-        PYSIDE2 = True
-
-        if sys.platform == "darwin":
-            macos_version = LooseVersion(platform.mac_ver()[0])
-            if macos_version < LooseVersion("10.11"):
-                if LooseVersion(QT_VERSION) >= LooseVersion("5.11"):
-                    raise PythonQtError(
-                        "Qt 5.11 or higher only works in "
-                        "macOS 10.11 or higher. Your "
-                        "program will fail in this "
-                        "system."
-                    )
-
-            del macos_version
-    except ImportError:
-        API = os.environ["QT_API"] = "pyqt6"
-
-if API in PYQT6_API:
-    try:
-        from PyQt6.QtCore import PYQT_VERSION_STR as PYQT_VERSION  # noqa
-        from PyQt6.QtCore import QT_VERSION_STR as QT_VERSION  # noqa
-
-        PYSIDE_VERSION = None  # noqa
-        PYQT5 = False
-        PYQT6 = True
-
-    except ImportError:
-        API = os.environ["QT_API"] = "pyside6"
-
-if API in PYSIDE6_API:
-    try:
-        from PySide6 import __version__ as PYSIDE_VERSION  # noqa
-        from PySide6.QtCore import __version__ as QT_VERSION  # noqa
-
-        PYQT_VERSION = None  # noqa
-        PYQT5 = False
-        PYSIDE6 = True
-
-    except ImportError:
-        API = None
-
-if API is None:
-    raise PythonQtError(
-        "No Qt bindings could be found.\nYou must install one of the following packages "
-        "to use QtRangeSlider: PyQt5, PyQt6, PySide2, or PySide6"
-    )
-
-# If a correct API name is passed to QT_API and it could not be found,
-# switches to another and informs through the warning
-if API != initial_api and binding_specified:
-    warnings.warn(
-        'Selected binding "{}" could not be found, '
-        'using "{}"'.format(initial_api, API),
-        RuntimeWarning,
-    )
-
-API_NAME = {
-    "pyqt5": "PyQt5",
-    "pyqt6": "PyQt6",
-    "pyside2": "PySide2",
-    "pyside6": "PySide6",
-}[API]

setup.cfg

@@ -1,18 +1,13 @@
 [metadata]
-name = QtRangeSlider
-url = https://github.com/tlambert03/QtRangeSlider
-license = BSD-3
-license_file = LICENSE
-description = Multi-handle range slider widget for PyQt/PySide
-long_description = file: README.md, CHANGELOG.md
+name = superqt
+description = Missing widgets for PyQt/PySide
+long_description = file: README.md
 long_description_content_type = text/markdown
+url = https://github.com/napari/superqt
 author = Talley Lambert
 author_email = talley.lambert@gmail.com
-keywords = qt, range slider, widget
-project_urls =
-    Source = https://github.com/tlambert03/QtRangeSlider
-    Tracker = https://github.com/tlambert03/QtRangeSlider/issues
-    Changelog = https://github.com/tlambert03/QtRangeSlider/blob/master/CHANGELOG.md
+license = BSD-3-Clause
+license_file = LICENSE
 classifiers =
     Development Status :: 4 - Beta
     Environment :: X11 Applications :: Qt
@@ -20,49 +15,100 @@ classifiers =
     License :: OSI Approved :: BSD License
     Operating System :: OS Independent
     Programming Language :: Python
+    Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3.10
+    Programming Language :: Python :: Implementation :: CPython
     Topic :: Desktop Environment
     Topic :: Software Development
     Topic :: Software Development :: User Interfaces
     Topic :: Software Development :: Widget Sets
+keywords = qt, range slider, widget
+project_urls =
+    Source = https://github.com/napari/superqt
+    Tracker = https://github.com/napari/superqt/issues
+    Changelog = https://github.com/napari/superqt/blob/master/CHANGELOG.md
 
 [options]
-zip_safe = False
 packages = find:
-python_requires = >=3.6
-setup_requires = setuptools_scm
+install_requires =
+    packaging
+    qtpy>=1.1.0
+    typing-extensions>=3.10.0.0
+python_requires = >=3.7
+include_package_data = True
+package_dir =
+    =src
+setup_requires =
+    setuptools-scm
+zip_safe = False
+
+[options.packages.find]
+where = src
 
 [options.extras_require]
-pyside2 = pyside2
-pyqt5 = pyqt5
-pyside6 = pyside6
-pyqt6 = pyqt6
-testing =
-    tox
-    tox-conda
-    pytest
-    pytest-qt
-    pytest-cov
 dev =
     ipython
-    jedi<0.18.0
     isort
+    jedi<0.18.0
     mypy
     pre-commit
-    %(testing)s
-    %(pyqt5)s
+    pyside2
+    pytest
+    pytest-cov
+    pytest-qt
+    tox
+    tox-conda
+font_fa5 =
+    fonticon-fontawesome5
+font_mi5 =
+    fonticon-materialdesignicons5
+pyqt5 =
+    pyqt5
+pyqt6 =
+    pyqt6
+pyside2 =
+    pyside2
+pyside6 =
+    pyside6
+testing =
+    pytest
+    pytest-cov
+    pytest-qt
+    tox
+    tox-conda
+
+[options.package_data]
+superqt = py.typed
 
 [flake8]
 exclude = _version.py,.eggs,examples
 docstring-convention = numpy
-ignore = E203,W503,E501,C901,F403,F405
+ignore = E203,W503,E501,C901,F403,F405,D100
+
+[pydocstyle]
+convention = numpy
+add_select = D402,D415,D417
+ignore = D100
 
 [isort]
-profile=black
+profile = black
 
 [tool:pytest]
-addopts = -W error
+filterwarnings =
+    error
+    ignore:QPixmapCache.find:DeprecationWarning:
+    ignore:SelectableGroups dict interface:DeprecationWarning
+    ignore:The distutils package is deprecated:DeprecationWarning
+
+[mypy]
+strict = True
+files = src/superqt
+
+[mypy-superqt.qtcompat.*]
+ignore_missing_imports = True
+warn_unused_ignores = False
+allow_redefinition = True

setup.py

@@ -1,10 +0,0 @@
-"""
-PEP 517 doesn’t support editable installs
-so this file is currently here to support "pip install -e ."
-"""
-from setuptools import setup
-
-setup(
-    use_scm_version={"write_to": "qtrangeslider/_version.py"},
-    setup_requires=["setuptools_scm"],
-)

src/superqt/__init__.py

@@ -0,0 +1,41 @@
+"""superqt is a collection of QtWidgets for python."""
+try:
+    from ._version import version as __version__
+except ImportError:
+    __version__ = "unknown"
+
+
+from ._eliding_label import QElidingLabel
+from .collapsible import QCollapsible
+from .combobox import QEnumComboBox, QSearchableComboBox
+from .selection import QSearchableListWidget
+from .sliders import (
+    QDoubleRangeSlider,
+    QDoubleSlider,
+    QLabeledDoubleRangeSlider,
+    QLabeledDoubleSlider,
+    QLabeledRangeSlider,
+    QLabeledSlider,
+    QRangeSlider,
+)
+from .spinbox import QLargeIntSpinBox
+from .utils import QMessageHandler, ensure_main_thread, ensure_object_thread
+
+__all__ = [
+    "ensure_main_thread",
+    "ensure_object_thread",
+    "QDoubleRangeSlider",
+    "QDoubleSlider",
+    "QElidingLabel",
+    "QEnumComboBox",
+    "QLabeledDoubleRangeSlider",
+    "QLabeledDoubleSlider",
+    "QLabeledRangeSlider",
+    "QLabeledSlider",
+    "QLargeIntSpinBox",
+    "QMessageHandler",
+    "QSearchableComboBox",
+    "QSearchableListWidget",
+    "QRangeSlider",
+    "QCollapsible",
+]

src/superqt/_eliding_label.py

@@ -0,0 +1,110 @@
+from typing import List
+
+from qtpy.QtCore import QPoint, QRect, QSize, Qt
+from qtpy.QtGui import QFont, QFontMetrics, QResizeEvent, QTextLayout
+from qtpy.QtWidgets import QLabel
+
+
+class QElidingLabel(QLabel):
+    """A QLabel variant that will elide text (add '…') to fit width.
+
+    QElidingLabel()
+    QElidingLabel(parent: Optional[QWidget], f: Qt.WindowFlags = ...)
+    QElidingLabel(text: str, parent: Optional[QWidget] = None, f: Qt.WindowFlags = ...)
+
+    For a multiline eliding label, use `setWordWrap(True)`.  In this case, text
+    will wrap to fit the width, and only the last line will be elided.
+    When `wordWrap()` is True, `sizeHint()` will return the size required to fit
+    the full text.
+    """
+
+    def __init__(self, *args, **kwargs) -> None:
+        self._elide_mode = Qt.TextElideMode.ElideRight
+        super().__init__(*args, **kwargs)
+        self.setText(args[0] if args and isinstance(args[0], str) else "")
+
+    # New Public methods
+
+    def elideMode(self) -> Qt.TextElideMode:
+        """The current Qt.TextElideMode."""
+        return self._elide_mode
+
+    def setElideMode(self, mode: Qt.TextElideMode):
+        """Set the elide mode to a Qt.TextElideMode."""
+        self._elide_mode = Qt.TextElideMode(mode)
+        super().setText(self._elidedText())
+
+    @staticmethod
+    def wrapText(text, width, font=None) -> List[str]:
+        """Returns `text`, split as it would be wrapped for `width`, given `font`.
+
+        Static method.
+        """
+        tl = QTextLayout(text, font or QFont())
+        tl.beginLayout()
+        lines = []
+        while True:
+            ln = tl.createLine()
+            if not ln.isValid():
+                break
+            ln.setLineWidth(width)
+            start = ln.textStart()
+            lines.append(text[start : start + ln.textLength()])
+        tl.endLayout()
+        return lines
+
+    # Reimplemented QT methods
+
+    def text(self) -> str:
+        """This property holds the label's text.
+
+        If no text has been set this will return an empty string.
+        """
+        return self._text
+
+    def setText(self, txt: str):
+        """Set the label's text.
+
+        Setting the text clears any previous content.
+        NOTE: we set the QLabel private text to the elided version
+        """
+        self._text = txt
+        super().setText(self._elidedText())
+
+    def resizeEvent(self, ev: QResizeEvent) -> None:
+        ev.accept()
+        super().setText(self._elidedText())
+
+    def setWordWrap(self, wrap: bool) -> None:
+        super().setWordWrap(wrap)
+        super().setText(self._elidedText())
+
+    def sizeHint(self) -> QSize:
+        if not self.wordWrap():
+            return super().sizeHint()
+        fm = QFontMetrics(self.font())
+        flags = int(self.alignment() | Qt.TextFlag.TextWordWrap)
+        r = fm.boundingRect(QRect(QPoint(0, 0), self.size()), flags, self._text)
+        return QSize(self.width(), r.height())
+
+    # private implementation methods
+
+    def _elidedText(self) -> str:
+        """Return `self._text` elided to `width`"""
+        fm = QFontMetrics(self.font())
+        # the 2 is a magic number that prevents the ellipses from going missing
+        # in certain cases (?)
+        width = self.width() - 2
+        if not self.wordWrap():
+            return fm.elidedText(self._text, self._elide_mode, width)
+
+        # get number of lines we can fit without eliding
+        nlines = self.height() // fm.height() - 1
+        # get the last line (elided)
+        text = self._wrappedText()
+        last_line = fm.elidedText("".join(text[nlines:]), self._elide_mode, width)
+        # join them
+        return "".join(text[:nlines] + [last_line])
+
+    def _wrappedText(self) -> List[str]:
+        return QElidingLabel.wrapText(self._text, self.width(), self.font())

src/superqt/collapsible/__init__.py

@@ -0,0 +1,3 @@
+from ._collapsible import QCollapsible
+
+__all__ = ["QCollapsible"]

src/superqt/collapsible/_collapsible.py

@@ -0,0 +1,140 @@
+"""A collapsible widget to hide and unhide child widgets"""
+from typing import Optional
+
+from qtpy.QtCore import QEasingCurve, QEvent, QMargins, QObject, QPropertyAnimation, Qt
+from qtpy.QtWidgets import QFrame, QPushButton, QVBoxLayout, QWidget
+
+
+class QCollapsible(QFrame):
+    """A collapsible widget to hide and unhide child widgets.
+
+    Based on https://stackoverflow.com/a/68141638
+    """
+
+    _EXPANDED = "▼  "
+    _COLLAPSED = "▲  "
+
+    def __init__(self, title: str = "", parent: Optional[QWidget] = None):
+        super().__init__(parent)
+        self._locked = False
+        self._is_animating = False
+
+        self._toggle_btn = QPushButton(self._COLLAPSED + title)
+        self._toggle_btn.setCheckable(True)
+        self._toggle_btn.setStyleSheet("text-align: left; border: none; outline: none;")
+        self._toggle_btn.toggled.connect(self._toggle)
+
+        # frame layout
+        self.setLayout(QVBoxLayout())
+        self.layout().setAlignment(Qt.AlignmentFlag.AlignTop)
+        self.layout().addWidget(self._toggle_btn)
+
+        # Create animators
+        self._animation = QPropertyAnimation(self)
+        self._animation.setPropertyName(b"maximumHeight")
+        self._animation.setStartValue(0)
+        self._animation.finished.connect(self._on_animation_done)
+        self.setDuration(300)
+        self.setEasingCurve(QEasingCurve.Type.InOutCubic)
+
+        # default content widget
+        _content = QWidget()
+        _content.setLayout(QVBoxLayout())
+        _content.setMaximumHeight(0)
+        _content.layout().setContentsMargins(QMargins(5, 0, 0, 0))
+        self.setContent(_content)
+
+    def setText(self, text: str):
+        """Set the text of the toggle button."""
+        current = self._toggle_btn.text()[: len(self._EXPANDED)]
+        self._toggle_btn.setText(current + text)
+
+    def text(self) -> str:
+        """Return the text of the toggle button."""
+        return self._toggle_btn.text()[len(self._EXPANDED) :]
+
+    def setContent(self, content: QWidget):
+        """Replace central widget (the widget that gets expanded/collapsed)."""
+        self._content = content
+        self.layout().addWidget(self._content)
+        self._animation.setTargetObject(content)
+
+    def content(self) -> QWidget:
+        """Return the current content widget."""
+        return self._content
+
+    def setDuration(self, msecs: int):
+        """Set duration of the collapse/expand animation."""
+        self._animation.setDuration(msecs)
+
+    def setEasingCurve(self, easing: QEasingCurve):
+        """Set the easing curve for the collapse/expand animation"""
+        self._animation.setEasingCurve(easing)
+
+    def addWidget(self, widget: QWidget):
+        """Add a widget to the central content widget's layout."""
+        widget.installEventFilter(self)
+        self._content.layout().addWidget(widget)
+
+    def removeWidget(self, widget: QWidget):
+        """Remove widget from the central content widget's layout."""
+        self._content.layout().removeWidget(widget)
+        widget.removeEventFilter(self)
+
+    def expand(self, animate: bool = True):
+        """Expand (show) the collapsible section"""
+        self._expand_collapse(QPropertyAnimation.Direction.Forward, animate)
+
+    def collapse(self, animate: bool = True):
+        """Collapse (hide) the collapsible section"""
+        self._expand_collapse(QPropertyAnimation.Direction.Backward, animate)
+
+    def isExpanded(self) -> bool:
+        """Return whether the collapsible section is visible"""
+        return self._toggle_btn.isChecked()
+
+    def setLocked(self, locked: bool = True):
+        """Set whether collapse/expand is disabled"""
+        self._locked = locked
+        self._toggle_btn.setCheckable(not locked)
+
+    def locked(self) -> bool:
+        """Return True if collapse/expand is disabled"""
+        return self._locked
+
+    def _expand_collapse(
+        self, direction: QPropertyAnimation.Direction, animate: bool = True
+    ):
+        if self._locked:
+            return
+
+        forward = direction == QPropertyAnimation.Direction.Forward
+        text = self._EXPANDED if forward else self._COLLAPSED
+
+        self._toggle_btn.setChecked(forward)
+        self._toggle_btn.setText(text + self._toggle_btn.text()[len(self._EXPANDED) :])
+
+        _content_height = self._content.sizeHint().height() + 10
+        if animate:
+            self._animation.setDirection(direction)
+            self._animation.setEndValue(_content_height)
+            self._is_animating = True
+            self._animation.start()
+        else:
+            self._content.setMaximumHeight(_content_height if forward else 0)
+
+    def _toggle(self):
+        self.expand() if self.isExpanded() else self.collapse()
+
+    def eventFilter(self, a0: QObject, a1: QEvent) -> bool:
+        """If a child widget resizes, we need to update our expanded height."""
+        if (
+            a1.type() == QEvent.Type.Resize
+            and self.isExpanded()
+            and not self._is_animating
+        ):
+            self._expand_collapse(QPropertyAnimation.Direction.Forward, animate=False)
+        return False
+
+    def _on_animation_done(self):
+        self._is_animating = False

src/superqt/combobox/__init__.py

@@ -0,0 +1,4 @@
+from ._enum_combobox import QEnumComboBox
+from ._searchable_combo_box import QSearchableComboBox
+
+__all__ = ("QEnumComboBox", "QSearchableComboBox")

src/superqt/combobox/_enum_combobox.py

@@ -0,0 +1,112 @@
+from enum import Enum, EnumMeta
+from typing import Optional, TypeVar
+
+from qtpy.QtCore import Signal
+from qtpy.QtWidgets import QComboBox
+
+EnumType = TypeVar("EnumType", bound=Enum)
+
+
+NONE_STRING = "----"
+
+
+def _get_name(enum_value: Enum):
+    """Create human readable name if user does not provide own implementation of __str__"""
+    if enum_value.__str__.__module__ != "enum":
+        # check if function was overloaded
+        name = str(enum_value)
+    else:
+        name = enum_value.name.replace("_", " ")
+    return name
+
+
+class QEnumComboBox(QComboBox):
+    """
+    ComboBox presenting options from a python Enum.
+
+    If the Enum class does not implement `__str__` then a human readable name
+    is created from the name of the enum member, replacing underscores with spaces.
+    """
+
+    currentEnumChanged = Signal(object)
+
+    def __init__(
+        self, parent=None, enum_class: Optional[EnumMeta] = None, allow_none=False
+    ):
+        super().__init__(parent)
+        self._enum_class = None
+        self._allow_none = False
+        if enum_class is not None:
+            self.setEnumClass(enum_class, allow_none)
+        self.currentIndexChanged.connect(self._emit_signal)
+
+    def setEnumClass(self, enum: Optional[EnumMeta], allow_none=False):
+        """
+        Set enum class from which members value should be selected
+        """
+        self.clear()
+        self._enum_class = enum
+        self._allow_none = allow_none and enum is not None
+        if allow_none:
+            super().addItem(NONE_STRING)
+        super().addItems(list(map(_get_name, self._enum_class.__members__.values())))
+
+    def enumClass(self) -> Optional[EnumMeta]:
+        """return current Enum class"""
+        return self._enum_class
+
+    def isOptional(self) -> bool:
+        """return if current enum is with optional annotation"""
+        return self._allow_none
+
+    def clear(self):
+        self._enum_class = None
+        self._allow_none = False
+        super().clear()
+
+    def currentEnum(self) -> Optional[EnumType]:
+        """current value as Enum member"""
+        if self._enum_class is not None:
+            if self._allow_none:
+                if self.currentText() == NONE_STRING:
+                    return None
+                else:
+                    return list(self._enum_class.__members__.values())[
+                        self.currentIndex() - 1
+                    ]
+            return list(self._enum_class.__members__.values())[self.currentIndex()]
+        return None
+
+    def setCurrentEnum(self, value: Optional[EnumType]) -> None:
+        """Set value with Enum."""
+        if self._enum_class is None:
+            raise RuntimeError(
+                "Uninitialized enum class. Use `setEnumClass` before `setCurrentEnum`."
+            )
+        if value is None and self._allow_none:
+            self.setCurrentIndex(0)
+            return
+        if not isinstance(value, self._enum_class):
+            raise TypeError(
+                f"setValue(self, Enum): argument 1 has unexpected type {type(value).__name__!r}"
+            )
+        self.setCurrentText(_get_name(value))
+
+    def _emit_signal(self):
+        if self._enum_class is not None:
+            self.currentEnumChanged.emit(self.currentEnum())
+
+    def insertItems(self, *_, **__):
+        raise RuntimeError("EnumComboBox does not allow to insert items")
+
+    def insertItem(self, *_, **__):
+        raise RuntimeError("EnumComboBox does not allow to insert item")
+
+    def addItems(self, *_, **__):
+        raise RuntimeError("EnumComboBox does not allow to add items")
+
+    def addItem(self, *_, **__):
+        raise RuntimeError("EnumComboBox does not allow to add item")
+
+    def setInsertPolicy(self, policy):
+        raise RuntimeError("EnumComboBox does not allow to insert item")

src/superqt/combobox/_searchable_combo_box.py

@@ -0,0 +1,48 @@
+from qtpy import QT_VERSION
+from qtpy.QtCore import Qt, Signal
+from qtpy.QtWidgets import QComboBox, QCompleter
+
+try:
+    is_qt_bellow_5_14 = tuple(int(x) for x in QT_VERSION.split(".")[:2]) < (5, 14)
+except ValueError:
+    is_qt_bellow_5_14 = False
+
+
+class QSearchableComboBox(QComboBox):
+    """
+    ComboCox with completer for fast search in multiple options
+    """
+
+    if is_qt_bellow_5_14:
+        textActivated = Signal(str)  # pragma: no cover
+
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.setEditable(True)
+        self.completer_object = QCompleter()
+        self.completer_object.setCaseSensitivity(Qt.CaseInsensitive)
+        self.completer_object.setCompletionMode(QCompleter.PopupCompletion)
+        self.completer_object.setFilterMode(Qt.MatchContains)
+        self.setCompleter(self.completer_object)
+        self.setInsertPolicy(QComboBox.NoInsert)
+        if is_qt_bellow_5_14:  # pragma: no cover
+            self.currentIndexChanged.connect(self._text_activated)
+
+    def _text_activated(self):  # pragma: no cover
+        self.textActivated.emit(self.currentText())
+
+    def addItem(self, *args):
+        super().addItem(*args)
+        self.completer_object.setModel(self.model())
+
+    def addItems(self, *args):
+        super().addItems(*args)
+        self.completer_object.setModel(self.model())
+
+    def insertItem(self, *args) -> None:
+        super().insertItem(*args)
+        self.completer_object.setModel(self.model())
+
+    def insertItems(self, *args) -> None:
+        super().insertItems(*args)
+        self.completer_object.setModel(self.model())

src/superqt/fonticon/__init__.py

@@ -0,0 +1,218 @@
+from __future__ import annotations
+
+__all__ = [
+    "addFont",
+    "ENTRY_POINT",
+    "font",
+    "icon",
+    "IconFont",
+    "IconFontMeta",
+    "IconOpts",
+    "Animation",
+    "pulse",
+    "spin",
+]
+
+from typing import TYPE_CHECKING, Dict, Optional, Tuple, Union
+
+from ._animations import Animation, pulse, spin
+from ._iconfont import IconFont, IconFontMeta
+from ._plugins import FontIconManager as _FIM
+from ._qfont_icon import DEFAULT_SCALING_FACTOR, IconOptionDict, IconOpts
+from ._qfont_icon import QFontIconStore as _QFIS
+
+if TYPE_CHECKING:
+    from qtpy.QtGui import QFont, QTransform
+    from qtpy.QtWidgets import QWidget
+
+    from ._qfont_icon import QFontIcon, ValidColor
+
+ENTRY_POINT = _FIM.ENTRY_POINT
+
+
+# FIXME: currently, an Animation requires a *pre-bound* QObject.  which makes it very
+# awkward to use animations when declaratively listing icons.  It would be much better
+# to have a way to find the widget later, to execute the animation... short of that, I
+# think we should take animation off of `icon` here, and suggest that it be an
+# an additional convenience method after the icon has been bound to a QObject.
+def icon(
+    glyph_key: str,
+    scale_factor: float = DEFAULT_SCALING_FACTOR,
+    color: ValidColor = None,
+    opacity: float = 1,
+    animation: Optional[Animation] = None,
+    transform: Optional[QTransform] = None,
+    states: Dict[str, Union[IconOptionDict, IconOpts]] = {},
+) -> QFontIcon:
+    """Create a QIcon for `glyph_key`, with a number of optional settings
+
+    The `glyph_key` (e.g. 'fa5s.smile') represents a Font-family & style, and a glpyh.
+    In most cases, the key should be provided by a plugin in the environment, like:
+
+    https://github.com/tlambert03/fonticon-fontawesome5  ('fa5s' & 'fa5r' prefixes)
+    https://github.com/tlambert03/fonticon-materialdesignicons6  ('mdi6' prefix)
+
+    ...but fonts can also be added manually using :func:`addFont`.
+
+    Parameters
+    ----------
+    glyph_key : str
+        String encapsulating a font-family, style, and glyph. e.g. 'fa5s.smile'.
+    scale_factor : float, optional
+        Scale factor (fraction of widget height), When widget icon is painted on widget,
+        it will use `font.setPixelSize(round(wdg.height() * scale_factor))`.
+        by default 0.875.
+    color : ValidColor, optional
+        Color for the font, by default None. (e.g. The default `QColor`)
+        Valid color types include `QColor`, `int`, `str`, `Qt.GlobalColor`, `tuple` (of
+        integer: RGB[A]) (anything that can be passed to `QColor`).
+    opacity : float, optional
+        Opacity of icon, by default 1
+    animation : Animation, optional
+        Animation for the icon.  A subclass of superqt.fonticon.Animation, that provides
+        a concrete `animate` method. (see "spin" and "pulse" for examples).
+        by default None.
+    transform : QTransform, optional
+        A `QTransform` to apply when painting the icon, by default None
+    states : dict, optional
+        Provide additional styling for the icon in different states.  `states` must be
+        a mapping of string to dict, where:
+
+        - the key represents a `QIcon.State` ("on", "off"), a `QIcon.Mode` ("normal",
+          "active", "selected", "disabled"), or any combination of a state & mode
+          separated by an underscore (e.g. "off_active", "selected_on", etc...).
+        - the value is a dict with all of the same key/value meanings listed above as
+          parameters to this function (e.g. `glyph_key`, `color`,`scale_factor`,
+          `animation`, etc...)
+
+        Missing keys in the state dicts will be taken from the default options, provided
+        by the paramters above.
+
+    Returns
+    -------
+    QFontIcon
+        A subclass of QIcon.  Can be used wherever QIcons are used, such as
+        `widget.setIcon()`
+
+    Examples
+    --------
+    # simple example (assumes the font-awesome5 plugin is installed)
+    >>> btn = QPushButton()
+    >>> btn.setIcon(icon('fa5s.smile'))
+
+    # can also directly import from fonticon_fa5
+    >>> from fonticon_fa5 import FA5S
+    >>> btn.setIcon(icon(FA5S.smile))
+
+    # with animation
+    >>> btn2 = QPushButton()
+    >>> btn2.setIcon(icon(FA5S.spinner, animation=pulse(btn2)))
+
+    # complicated example
+    >>> btn = QPushButton()
+    >>> btn.setIcon(
+    ...     icon(
+    ...         FA5S.ambulance,
+    ...         color="blue",
+    ...         states={
+    ...             "active": {
+    ...                 "glyph": FA5S.bath,
+    ...                 "color": "red",
+    ...                 "scale_factor": 0.5,
+    ...                 "animation": pulse(btn),
+    ...             },
+    ...             "disabled": {
+    ...                 "color": "green",
+    ...                 "scale_factor": 0.8,
+    ...                 "animation": spin(btn)
+    ...             },
+    ...         },
+    ...     )
+    ... )
+    >>> btn.setIconSize(QSize(256, 256))
+    >>> btn.show()
+
+    """
+    return _QFIS.instance().icon(
+        glyph_key,
+        scale_factor=scale_factor,
+        color=color,
+        opacity=opacity,
+        animation=animation,
+        transform=transform,
+        states=states,
+    )
+
+
+def setTextIcon(widget: QWidget, glyph_key: str, size: Optional[float] = None) -> None:
+    """Set text on a widget to a specific font & glyph.
+
+    This is an alternative to setting a QIcon with a pixmap.  It may be easier to
+    combine with dynamic stylesheets.
+
+    Parameters
+    ----------
+    wdg : QWidget
+        A widget supporting a `setText` method.
+    glyph_key : str
+        String encapsulating a font-family, style, and glyph. e.g. 'fa5s.smile'.
+    size : int, optional
+        Size for QFont.  passed to `setPixelSize`, by default None
+    """
+    return _QFIS.instance().setTextIcon(widget, glyph_key, size)
+
+
+def font(font_prefix: str, size: Optional[int] = None) -> QFont:
+    """Create QFont for `font_prefix`
+
+    Parameters
+    ----------
+    font_prefix : str
+        Font_prefix, such as 'fa5s' or 'mdi6', representing a font-family and style.
+    size : int, optional
+        Size for QFont.  passed to `setPixelSize`, by default None
+
+    Returns
+    -------
+    QFont
+        QFont instance that can be used to add fonticons to widgets.
+    """
+    return _QFIS.instance().font(font_prefix, size)
+
+
+def addFont(
+    filepath: str, prefix: str, charmap: Optional[Dict[str, str]] = None
+) -> Optional[Tuple[str, str]]:
+    """Add OTF/TTF file at `filepath` to the registry under `prefix`.
+
+    If you'd like to later use a fontkey in the form of `prefix.some-name`, then
+    `charmap` must be provided and provide a mapping for all of the glyph names
+    to their unicode numbers. If a charmap is not provided, glyphs must be directly
+    accessed with their unicode as something like `key.\uffff`.
+
+    NOTE: in most cases, users will not need this.
+    Instead, they should install a font plugin, like:
+    https://github.com/tlambert03/fonticon-fontawesome5
+    https://github.com/tlambert03/fonticon-materialdesignicons6
+
+    Parameters
+    ----------
+    filepath : str
+        Path to an OTF or TTF file containing the fonts
+    prefix : str
+        A prefix that will represent this font file when used for lookup.  For example,
+        'fa5s' for 'Font-Awesome 5 Solid'.
+    charmap : Dict[str, str], optional
+        optional mapping for all of the glyph names to their unicode numbers.
+        See note above.
+
+    Returns
+    -------
+    Tuple[str, str], optional
+        font-family and font-style for the file just registered, or `None` if
+        something goes wrong.
+    """
+    return _QFIS.instance().addFont(filepath, prefix, charmap)
+
+
+del DEFAULT_SCALING_FACTOR

src/superqt/fonticon/_animations.py

@@ -0,0 +1,40 @@
+from abc import ABC, abstractmethod
+
+from qtpy.QtCore import QRectF, QTimer
+from qtpy.QtGui import QPainter
+from qtpy.QtWidgets import QWidget
+
+
+class Animation(ABC):
+    def __init__(self, parent_widget: QWidget, interval: int = 10, step: int = 1):
+        self.parent_widget = parent_widget
+        self.timer = QTimer()
+        self.timer.timeout.connect(self._update)  # type: ignore
+        self.timer.setInterval(interval)
+        self._angle = 0
+        self._step = step
+
+    def _update(self):
+        if self.timer.isActive():
+            self._angle += self._step
+            self.parent_widget.update()
+
+    @abstractmethod
+    def animate(self, painter: QPainter):
+        """Setup and start the timer for the animation."""
+
+
+class spin(Animation):
+    def animate(self, painter: QPainter):
+        if not self.timer.isActive():
+            self.timer.start()
+
+        mid = QRectF(painter.viewport()).center()
+        painter.translate(mid)
+        painter.rotate(self._angle % 360)
+        painter.translate(-mid)
+
+
+class pulse(spin):
+    def __init__(self, parent_widget: QWidget = None):
+        super().__init__(parent_widget, interval=200, step=45)

src/superqt/fonticon/_iconfont.py

@@ -0,0 +1,88 @@
+from typing import Mapping, Type, Union
+
+FONTFILE_ATTR = "__font_file__"
+
+
+class IconFontMeta(type):
+    """IconFont metaclass.
+
+    This updates the value of all class attributes to be prefaced with the class
+    name (lowercase), and makes sure that all values are valid characters.
+
+    Examples
+    --------
+    This metaclass turns the following class:
+
+        class FA5S(metaclass=IconFontMeta):
+            __font_file__ = 'path/to/font.otf'
+            some_char = 0xfa42
+
+    into this:
+
+        class FA5S:
+            __font_file__ = path/to/font.otf'
+            some_char = 'fa5s.\ufa42'
+
+    In usage, this means that someone could use `icon(FA5S.some_char)` (provided
+    that the FA5S class/namespace has already been registered).  This makes
+    IDE attribute checking and autocompletion easier.
+    """
+
+    __font_file__: str
+
+    def __new__(cls, name, bases, namespace, **kwargs):
+        # make sure this class provides the __font_file__ interface
+        ff = namespace.get(FONTFILE_ATTR)
+        if not (ff and isinstance(ff, (str, classmethod))):
+            raise TypeError(
+                f"Invalid Font: must declare {FONTFILE_ATTR!r} attribute or classmethod"
+            )
+
+        # update all values to be `key.unicode`
+        prefix = name.lower()
+        for k, v in list(namespace.items()):
+            if k.startswith("__"):
+                continue
+            char = chr(v) if isinstance(v, int) else v
+            if len(char) != 1:
+                raise TypeError(
+                    "Invalid Font: All fonts values must be a single "
+                    f"unicode char. ('{name}.{char}' has length {len(char)}). "
+                    "You may use unicode representations: like '\\uf641' or '0xf641'"
+                )
+            namespace[k] = f"{prefix}.{char}"
+
+        return super().__new__(cls, name, bases, namespace, **kwargs)
+
+
+class IconFont(metaclass=IconFontMeta):
+    """Helper class that provides a standard way to create an IconFont.
+
+    Examples
+    --------
+
+        class FA5S(IconFont):
+            __font_file__ = '...'
+            some_char = 0xfa42
+    """
+
+    __slots__ = ()
+    __font_file__ = "..."
+
+
+def namespace2font(namespace: Union[Mapping, Type], name: str) -> Type[IconFont]:
+    """Convenience to convert a namespace (class, module, dict) into an IconFont."""
+    if isinstance(namespace, type):
+        assert isinstance(
+            getattr(namespace, FONTFILE_ATTR), str
+        ), "Not a valid font type"
+        return namespace  # type: ignore
+    elif hasattr(namespace, "__dict__"):
+        ns = dict(namespace.__dict__)
+    else:
+        raise ValueError(
+            "namespace must be a mapping or an object with __dict__ attribute."
+        )
+    if not str.isidentifier(name):
+        raise ValueError(f"name {name!r} is not a valid identifier.")
+    return type(name, (IconFont,), ns)

src/superqt/fonticon/_plugins.py

@@ -0,0 +1,103 @@
+from typing import Dict, List, Set, Tuple
+
+from ._iconfont import IconFontMeta, namespace2font
+
+try:
+    from importlib.metadata import EntryPoint, entry_points
+except ImportError:
+    from importlib_metadata import EntryPoint, entry_points  # type: ignore
+
+
+class FontIconManager:
+
+    ENTRY_POINT = "superqt.fonticon"
+    _PLUGINS: Dict[str, EntryPoint] = {}
+    _LOADED: Dict[str, IconFontMeta] = {}
+    _BLOCKED: Set[EntryPoint] = set()
+
+    def _discover_fonts(self) -> None:
+        self._PLUGINS.clear()
+        for ep in entry_points().get(self.ENTRY_POINT, {}):
+            if ep not in self._BLOCKED:
+                self._PLUGINS[ep.name] = ep
+
+    def _get_font_class(self, key: str) -> IconFontMeta:
+        """Get IconFont given a key.
+
+        Parameters
+        ----------
+        key : str
+            font key to load.
+
+        Returns
+        -------
+        IconFontMeta
+            Instance of IconFontMeta
+
+        Raises
+        ------
+        KeyError
+            If no plugin provides this key
+        ImportError
+            If a plugin provides the key, but the entry point doesn't load
+        TypeError
+            If the entry point loads, but is not an IconFontMeta
+        """
+        if key not in self._LOADED:
+            # get the entrypoint
+            if key not in self._PLUGINS:
+                self._discover_fonts()
+            ep = self._PLUGINS.get(key)
+            if ep is None:
+                raise KeyError(f"No plugin provides the key {key!r}")
+
+            # load the entry point
+            try:
+                font = ep.load()
+            except Exception as e:
+                self._PLUGINS.pop(key)
+                self._BLOCKED.add(ep)
+                raise ImportError(f"Failed to load {ep.value}. Plugin blocked") from e
+
+            # make sure it's a proper IconFont
+            try:
+                self._LOADED[key] = namespace2font(font, ep.name.upper())
+            except Exception as e:
+                self._PLUGINS.pop(key)
+                self._BLOCKED.add(ep)
+                raise TypeError(
+                    f"Failed to create fonticon from {ep.value}: {e}"
+                ) from e
+        return self._LOADED[key]
+
+    def dict(self) -> dict:
+        return {
+            key: sorted(filter(lambda x: not x.startswith("_"), cls.__dict__))
+            for key, cls in self._LOADED.items()
+        }
+
+
+_manager = FontIconManager()
+get_font_class = _manager._get_font_class
+
+
+def discover() -> Tuple[str]:
+    _manager._discover_fonts()
+
+
+def available() -> Tuple[str]:
+    return tuple(_manager._PLUGINS)
+
+
+def loaded(load_all=False) -> Dict[str, List[str]]:
+    if load_all:
+        discover()
+        for x in available():
+            try:
+                _manager._get_font_class(x)
+            except Exception:
+                continue
+    return {
+        key: sorted(filter(lambda x: not x.startswith("_"), cls.__dict__))
+        for key, cls in _manager._LOADED.items()
+    }

src/superqt/fonticon/_qfont_icon.py

@@ -0,0 +1,555 @@
+from __future__ import annotations
+
+import warnings
+from collections import abc
+from dataclasses import dataclass
+from pathlib import Path
+from typing import DefaultDict, Dict, Optional, Sequence, Tuple, Type, Union, cast
+
+from qtpy import QT_VERSION
+from qtpy.QtCore import QObject, QPoint, QRect, QSize, Qt
+from qtpy.QtGui import (
+    QColor,
+    QFont,
+    QFontDatabase,
+    QGuiApplication,
+    QIcon,
+    QIconEngine,
+    QPainter,
+    QPixmap,
+    QPixmapCache,
+    QTransform,
+)
+from qtpy.QtWidgets import QApplication, QStyleOption, QWidget
+from typing_extensions import TypedDict
+
+from ..utils import QMessageHandler
+from ._animations import Animation
+
+
+class Unset:
+    def __repr__(self) -> str:
+        return "UNSET"
+
+
+_Unset = Unset()
+
+# A 16 pixel-high icon yields a font size of 14, which is pixel perfect
+# for font-awesome. 16 * 0.875 = 14
+# The reason why the glyph size is smaller than the icon size is to
+# account for font bearing.
+DEFAULT_SCALING_FACTOR = 0.875
+DEFAULT_OPACITY = 1
+ValidColor = Union[
+    QColor,
+    int,
+    str,
+    Qt.GlobalColor,
+    Tuple[int, int, int, int],
+    Tuple[int, int, int],
+    None,
+]
+
+StateOrMode = Union[QIcon.State, QIcon.Mode]
+StateModeKey = Union[StateOrMode, str, Sequence[StateOrMode]]
+_SM_MAP: Dict[str, StateOrMode] = {
+    "on": QIcon.State.On,
+    "off": QIcon.State.Off,
+    "normal": QIcon.Mode.Normal,
+    "active": QIcon.Mode.Active,
+    "selected": QIcon.Mode.Selected,
+    "disabled": QIcon.Mode.Disabled,
+}
+
+
+def _norm_state_mode(key: StateModeKey) -> Tuple[QIcon.State, QIcon.Mode]:
+    """return state/mode tuple given a variety of valid inputs.
+
+    Input can be either a string, or a sequence of state or mode enums.
+    Strings can be any combination of on, off, normal, active, selected, disabled,
+    sep by underscore.
+    """
+    _sm: Sequence[StateOrMode]
+    if isinstance(key, str):
+        try:
+            _sm = [_SM_MAP[k.lower()] for k in key.split("_")]
+        except KeyError:
+            raise ValueError(
+                f"{key!r} is not a valid state key, must be a combination of {{on, "
+                "off, active, disabled, selected, normal} separated by underscore"
+            )
+    else:
+        _sm = key if isinstance(key, abc.Sequence) else [key]  # type: ignore
+
+    state = next((i for i in _sm if isinstance(i, QIcon.State)), QIcon.State.Off)
+    mode = next((i for i in _sm if isinstance(i, QIcon.Mode)), QIcon.Mode.Normal)
+    return state, mode
+
+
+class IconOptionDict(TypedDict, total=False):
+    glyph_key: str
+    scale_factor: float
+    color: ValidColor
+    opacity: float
+    animation: Optional[Animation]
+    transform: Optional[QTransform]
+
+
+# public facing, for a nicer IDE experience than a dict
+# The difference between IconOpts and _IconOptions is that all of IconOpts
+# all default to `_Unset` and are intended to extend some base/default option
+# IconOpts are *not* guaranteed to be fully capable of rendering an icon, whereas
+# IconOptions are.
+@dataclass
+class IconOpts:
+    glyph_key: Union[str, Unset] = _Unset
+    scale_factor: Union[float, Unset] = _Unset
+    color: Union[ValidColor, Unset] = _Unset
+    opacity: Union[float, Unset] = _Unset
+    animation: Union[Animation, Unset, None] = _Unset
+    transform: Union[QTransform, Unset, None] = _Unset
+
+    def dict(self) -> IconOptionDict:
+        # not using asdict due to pickle errors on animation
+        d = {k: v for k, v in vars(self).items() if v is not _Unset}
+        return cast(IconOptionDict, d)
+
+
+@dataclass
+class _IconOptions:
+    """The set of options needed to render a font in a single State/Mode."""
+
+    glyph_key: str
+    scale_factor: float = DEFAULT_SCALING_FACTOR
+    color: ValidColor = None
+    opacity: float = DEFAULT_OPACITY
+    animation: Optional[Animation] = None
+    transform: Optional[QTransform] = None
+
+    def _update(self, icon_opts: IconOpts) -> _IconOptions:
+        return _IconOptions(**{**vars(self), **icon_opts.dict()})
+
+    def dict(self) -> IconOptionDict:
+        # not using asdict due to pickle errors on animation
+        return cast(IconOptionDict, vars(self))
+
+
+class _QFontIconEngine(QIconEngine):
+    _opt_hash: str = ""
+
+    def __init__(self, options: _IconOptions):
+        super().__init__()
+        self._opts: DefaultDict[
+            QIcon.State, Dict[QIcon.Mode, Optional[_IconOptions]]
+        ] = DefaultDict(dict)
+        self._opts[QIcon.State.Off][QIcon.Mode.Normal] = options
+        self.update_hash()
+
+    @property
+    def _default_opts(self) -> _IconOptions:
+        return cast(_IconOptions, self._opts[QIcon.State.Off][QIcon.Mode.Normal])
+
+    def _add_opts(self, state: QIcon.State, mode: QIcon.Mode, opts: IconOpts) -> None:
+        self._opts[state][mode] = self._default_opts._update(opts)
+        self.update_hash()
+
+    def clone(self) -> QIconEngine:  # pragma: no cover
+        ico = _QFontIconEngine(self._default_opts)
+        ico._opts = self._opts.copy()
+        return ico
+
+    def _get_opts(self, state: QIcon.State, mode: QIcon.Mode) -> _IconOptions:
+        opts = self._opts[state].get(mode)
+        if opts:
+            return opts
+
+        opp_state = QIcon.State.Off if state == QIcon.State.On else QIcon.State.On
+        if mode in (QIcon.Mode.Disabled, QIcon.Mode.Selected):
+            opp_mode = (
+                QIcon.Mode.Disabled
+                if mode == QIcon.Mode.Selected
+                else QIcon.Mode.Selected
+            )
+            for m, s in [
+                (QIcon.Mode.Normal, state),
+                (QIcon.Mode.Active, state),
+                (mode, opp_state),
+                (QIcon.Mode.Normal, opp_state),
+                (QIcon.Mode.Active, opp_state),
+                (opp_mode, state),
+                (opp_mode, opp_state),
+            ]:
+                opts = self._opts[s].get(m)
+                if opts:
+                    return opts
+        else:
+            opp_mode = (
+                QIcon.Mode.Active if mode == QIcon.Mode.Normal else QIcon.Mode.Normal
+            )
+            for m, s in [
+                (opp_mode, state),
+                (mode, opp_state),
+                (opp_mode, opp_state),
+                (QIcon.Mode.Disabled, state),
+                (QIcon.Mode.Selected, state),
+                (QIcon.Mode.Disabled, opp_state),
+                (QIcon.Mode.Selected, opp_state),
+            ]:
+                opts = self._opts[s].get(m)
+                if opts:
+                    return opts
+        return self._default_opts
+
+    def paint(
+        self,
+        painter: QPainter,
+        rect: QRect,
+        mode: QIcon.Mode,
+        state: QIcon.State,
+    ) -> None:
+        opts = self._get_opts(state, mode)
+
+        char, family, style = QFontIconStore.key2glyph(opts.glyph_key)
+
+        # font
+        font = QFont()
+        font.setFamily(family)  # set sepeartely for Qt6
+        font.setPixelSize(round(rect.height() * opts.scale_factor))
+        if style:
+            font.setStyleName(style)
+
+        # color
+        if isinstance(opts.color, tuple):
+            color_args = opts.color
+        else:
+            color_args = (opts.color,) if opts.color else ()  # type: ignore
+
+        # animation
+        if opts.animation is not None:
+            opts.animation.animate(painter)
+
+        # animation
+        if opts.transform is not None:
+            painter.setTransform(opts.transform, True)
+
+        painter.save()
+        painter.setPen(QColor(*color_args))
+        painter.setOpacity(opts.opacity)
+        painter.setFont(font)
+        with QMessageHandler():  # avoid "Populating font family aliases" warning
+            painter.drawText(rect, Qt.AlignmentFlag.AlignCenter, char)
+        painter.restore()
+
+    def pixmap(self, size: QSize, mode: QIcon.Mode, state: QIcon.State) -> QPixmap:
+        # first look in cache
+        pmckey = self._pmcKey(size, mode, state)
+        pm = QPixmapCache.find(pmckey) if pmckey else None
+        if pm:
+            return pm
+        pixmap = QPixmap(size)
+        if not size.isValid():
+            return pixmap
+        pixmap.fill(Qt.GlobalColor.transparent)
+        painter = QPainter(pixmap)
+        self.paint(painter, QRect(QPoint(0, 0), size), mode, state)
+        painter.end()
+
+        # Apply palette-based styles for disabled/selected modes
+        # unless the user has specifically set a color for this mode/state
+        if mode != QIcon.Mode.Normal:
+            ico_opts = self._opts[state].get(mode)
+            if not ico_opts or not ico_opts.color:
+                opt = QStyleOption()
+                opt.palette = QGuiApplication.palette()
+                generated = QApplication.style().generatedIconPixmap(mode, pixmap, opt)
+                if not generated.isNull():
+                    pixmap = generated
+
+        if pmckey and not pixmap.isNull():
+            QPixmapCache.insert(pmckey, pixmap)
+
+        return pixmap
+
+    def _pmcKey(self, size: QSize, mode: QIcon.Mode, state: QIcon.State) -> str:
+        # Qt6-style enums
+        if self._get_opts(state, mode).animation:
+            return ""
+        if hasattr(mode, "value"):
+            mode = mode.value
+        if hasattr(state, "value"):
+            state = state.value
+        k = ((((((size.width()) << 11) | size.height()) << 11) | mode) << 4) | state
+        return f"$superqt_{self._opt_hash}_{hex(k)}"
+
+    def update_hash(self) -> None:
+        hsh = id(self)
+        for state, d in self._opts.items():
+            for mode, opts in d.items():
+                if not opts:
+                    continue
+                hsh += hash(
+                    hash(opts.glyph_key) + hash(opts.color) + hash(state) + hash(mode)
+                )
+        self._opt_hash = hex(hsh)
+
+
+class QFontIcon(QIcon):
+    def __init__(self, options: _IconOptions) -> None:
+        self._engine = _QFontIconEngine(options)
+        super().__init__(self._engine)
+
+    def addState(
+        self,
+        state: QIcon.State = QIcon.State.Off,
+        mode: QIcon.Mode = QIcon.Mode.Normal,
+        glyph_key: Union[str, Unset] = _Unset,
+        scale_factor: Union[float, Unset] = _Unset,
+        color: Union[ValidColor, Unset] = _Unset,
+        opacity: Union[float, Unset] = _Unset,
+        animation: Union[Animation, Unset, None] = _Unset,
+        transform: Union[QTransform, Unset, None] = _Unset,
+    ) -> None:
+        """Set icon options for a specific mode/state."""
+        if glyph_key is not _Unset:
+            QFontIconStore.key2glyph(glyph_key)  # type: ignore
+
+        _opts = IconOpts(
+            glyph_key=glyph_key,
+            scale_factor=scale_factor,
+            color=color,
+            opacity=opacity,
+            animation=animation,
+            transform=transform,
+        )
+        self._engine._add_opts(state, mode, _opts)
+
+
+class QFontIconStore(QObject):
+
+    # map of key -> (font_family, font_style)
+    _LOADED_KEYS: Dict[str, Tuple[str, Optional[str]]] = dict()
+
+    # map of (font_family, font_style) -> character (char may include key)
+    _CHARMAPS: Dict[Tuple[str, Optional[str]], Dict[str, str]] = dict()
+
+    # singleton instance, use `instance()` to retrieve
+    __instance: Optional[QFontIconStore] = None
+
+    def __init__(self, parent: Optional[QObject] = None) -> None:
+        super().__init__(parent=parent)
+        # QT6 drops this
+        dpi = getattr(Qt.ApplicationAttribute, "AA_UseHighDpiPixmaps", None)
+        if dpi:
+            QApplication.setAttribute(dpi)
+
+    @classmethod
+    def instance(cls) -> QFontIconStore:
+        if cls.__instance is None:
+            cls.__instance = cls()
+        return cls.__instance
+
+    @classmethod
+    def clear(cls) -> None:
+        cls._LOADED_KEYS.clear()
+        cls._CHARMAPS.clear()
+        QFontDatabase.removeAllApplicationFonts()
+
+    @classmethod
+    def _key2family(cls, key: str) -> Tuple[str, Optional[str]]:
+        """Return (family, style) given a font `key`"""
+        key = key.split(".", maxsplit=1)[0]
+        if key not in cls._LOADED_KEYS:
+            from . import _plugins
+
+            try:
+                font_cls = _plugins.get_font_class(key)
+                result = cls.addFont(
+                    font_cls.__font_file__, key, charmap=font_cls.__dict__
+                )
+                if not result:  # pragma: no cover
+                    raise Exception("Invalid font file")
+                cls._LOADED_KEYS[key] = result
+            except ValueError as e:
+                raise ValueError(
+                    f"Unrecognized font key: {key!r}.\n"
+                    f"Known plugin keys include: {_plugins.available()}.\n"
+                    f"Loaded keys include: {list(cls._LOADED_KEYS)}."
+                ) from e
+        return cls._LOADED_KEYS[key]
+
+    @classmethod
+    def _ensure_char(cls, char: str, family: str, style: str) -> str:
+        """make sure that `char` is a glyph provided by `family` and `style`."""
+        if len(char) == 1 and ord(char) > 256:
+            return char
+        try:
+            charmap = cls._CHARMAPS[(family, style)]
+        except KeyError:
+            raise KeyError(f"No charmap registered for font '{family} ({style})'")
+        if char in charmap:
+            # split in case the charmap includes the key
+            return charmap[char].split(".", maxsplit=1)[-1]
+
+        ident = _ensure_identifier(char)
+        if ident in charmap:
+            return charmap[ident].split(".", maxsplit=1)[-1]
+
+        ident = f"{char!r} or {ident!r}" if char != ident else repr(ident)
+        raise ValueError(f"Font '{family} ({style})' has no glyph with the key {ident}")
+
+    @classmethod
+    def key2glyph(cls, glyph_key: str) -> tuple[str, str, Optional[str]]:
+        """Return (char, family, style) given a `glyph_key`"""
+        if "." not in glyph_key:
+            raise ValueError("Glyph key must contain a period")
+        font_key, char = glyph_key.split(".", maxsplit=1)
+        family, style = cls._key2family(font_key)
+        char = cls._ensure_char(char, family, style)
+        return char, family, style
+
+    @classmethod
+    def addFont(
+        cls, filepath: str, prefix: str, charmap: Optional[Dict[str, str]] = None
+    ) -> Optional[Tuple[str, str]]:
+        """Add font at `filepath` to the registry under `key`.
+
+        If you'd like to later use a fontkey in the form of `key.some-name`, then
+        `charmap` must be provided and provide a mapping for all of the glyph names
+        to their unicode numbers. If a charmap is not provided, glyphs must be directly
+        accessed with their unicode as something like `key.\uffff`.
+
+        Parameters
+        ----------
+        filepath : str
+            Path to an OTF or TTF file containing the fonts
+        key : str
+            A key that will represent this font file when used for lookup.  For example,
+            'fa5s' for 'Font-Awesome 5 Solid'.
+        charmap : Dict[str, str], optional
+            optional mapping for all of the glyph names to their unicode numbers.
+            See note above.
+
+        Returns
+        -------
+        Tuple[str, str], optional
+            font-family and font-style for the file just registered, or None if
+            something goes wrong.
+        """
+        if prefix in cls._LOADED_KEYS:
+            warnings.warn(f"Prefix {prefix} already loaded")
+            return
+
+        if not Path(filepath).exists():
+            raise FileNotFoundError(f"Font file doesn't exist: {filepath}")
+        if QApplication.instance() is None:
+            raise RuntimeError("Please create QApplication before adding a Font")
+
+        fontId = QFontDatabase.addApplicationFont(str(Path(filepath).absolute()))
+        if fontId < 0:  # pragma: no cover
+            warnings.warn(f"Cannot load font file: {filepath}")
+            return None
+
+        families = QFontDatabase.applicationFontFamilies(fontId)
+        if not families:  # pragma: no cover
+            warnings.warn(f"Font file is empty!: {filepath}")
+            return None
+        family: str = families[0]
+
+        # in Qt6, everything becomes a static member
+        QFd: Union[QFontDatabase, Type[QFontDatabase]] = (
+            QFontDatabase()  # type: ignore
+            if tuple(QT_VERSION.split(".")) < ("6", "0")
+            else QFontDatabase
+        )
+
+        styles = QFd.styles(family)  # type: ignore
+        style: str = styles[-1] if styles else ""
+        if not QFd.isSmoothlyScalable(family, style):  # pragma: no cover
+            warnings.warn(
+                f"Registered font {family} ({style}) is not smoothly scalable. "
+                "Icons may not look attractive."
+            )
+
+        cls._LOADED_KEYS[prefix] = (family, style)
+        if charmap:
+            cls._CHARMAPS[(family, style)] = charmap
+        return (family, style)
+
+    def icon(
+        self,
+        glyph_key: str,
+        *,
+        scale_factor: float = DEFAULT_SCALING_FACTOR,
+        color: ValidColor = None,
+        opacity: float = 1,
+        animation: Optional[Animation] = None,
+        transform: Optional[QTransform] = None,
+        states: Dict[str, Union[IconOptionDict, IconOpts]] = {},
+    ) -> QFontIcon:
+        self.key2glyph(glyph_key)  # make sure it's a valid glyph_key
+        default_opts = _IconOptions(
+            glyph_key=glyph_key,
+            scale_factor=scale_factor,
+            color=color,
+            opacity=opacity,
+            animation=animation,
+            transform=transform,
+        )
+        icon = QFontIcon(default_opts)
+        for kw, options in states.items():
+            if isinstance(options, IconOpts):
+                options = default_opts._update(options).dict()
+            icon.addState(*_norm_state_mode(kw), **options)
+        return icon
+
+    def setTextIcon(
+        self, widget: QWidget, glyph_key: str, size: Optional[float] = None
+    ) -> None:
+        """Sets text on a widget to a specific font & glyph.
+
+        This is an alternative to setting a QIcon with a pixmap.  It may
+        be easier to combine with dynamic stylesheets.
+        """
+        setText = getattr(widget, "setText", None)
+        if not setText:  # pragma: no cover
+            raise TypeError(f"Object does not a setText method: {widget}")
+
+        glyph = self.key2glyph(glyph_key)[0]
+        size = size or DEFAULT_SCALING_FACTOR
+        size = size if size > 1 else widget.height() * size
+        widget.setFont(self.font(glyph_key, int(size)))
+        setText(glyph)
+
+    def font(self, font_prefix: str, size: Optional[int] = None) -> QFont:
+        """Create QFont for `font_prefix`"""
+        font_key, _ = font_prefix.split(".", maxsplit=1)
+        family, style = self._key2family(font_key)
+        font = QFont()
+        font.setFamily(family)
+        if style:
+            font.setStyleName(style)
+        if size:
+            font.setPixelSize(int(size))
+        return font
+
+
+def _ensure_identifier(name: str) -> str:
+    """Normalize string to valid identifier"""
+    import keyword
+
+    if not name:
+        return ""
+
+    # add _ to beginning of names starting with numbers
+    if name[0].isdigit():
+        name = f"_{name}"
+
+    # add _ to end of reserved keywords
+    if keyword.iskeyword(name):
+        name += "_"
+
+    # replace dashes and spaces with underscores
+    name = name.replace("-", "_").replace(" ", "_")
+
+    assert str.isidentifier(name), f"Could not canonicalize name: {name}"
+    return name

src/superqt/qtcompat/__init__.py

@@ -0,0 +1,20 @@
+import sys
+import warnings
+from importlib import abc, util
+
+from qtpy import *  # noqa
+
+warnings.warn(
+    "The superqt.qtcompat module is deprecated as of v0.3.0. "
+    "Please import from `qtpy` instead."
+)
+
+
+# forward any requests for superqt.qtcompat.* to qtpy.*
+class SuperQtImporter(abc.MetaPathFinder):
+    def find_spec(self, fullname: str, path, target=None):  # type: ignore
+        if fullname.startswith(__name__):
+            return util.find_spec(fullname.replace(__name__, "qtpy"))
+
+
+sys.meta_path.append(SuperQtImporter())

src/superqt/selection/__init__.py

@@ -0,0 +1,3 @@
+from ._searchable_list_widget import QSearchableListWidget
+
+__all__ = ("QSearchableListWidget",)

src/superqt/selection/_searchable_list_widget.py

@@ -0,0 +1,46 @@
+from qtpy.QtCore import Qt
+from qtpy.QtWidgets import QLineEdit, QListWidget, QVBoxLayout, QWidget
+
+
+class QSearchableListWidget(QWidget):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+
+        self.list_widget = QListWidget()
+
+        self.filter_widget = QLineEdit()
+        self.filter_widget.textChanged.connect(self.update_visible)
+
+        layout = QVBoxLayout()
+        layout.addWidget(self.filter_widget)
+        layout.addWidget(self.list_widget)
+        self.setLayout(layout)
+
+    def __getattr__(self, item):
+        if hasattr(self.list_widget, item):
+            return getattr(self.list_widget, item)
+        return super().__getattr__(item)
+
+    def update_visible(self, text):
+        items_text = [
+            x.text() for x in self.list_widget.findItems(text, Qt.MatchContains)
+        ]
+        for index in range(self.list_widget.count()):
+            item = self.item(index)
+            item.setHidden(item.text() not in items_text)
+
+    def addItems(self, *args):
+        self.list_widget.addItems(*args)
+        self.update_visible(self.filter_widget.text())
+
+    def addItem(self, *args):
+        self.list_widget.addItem(*args)
+        self.update_visible(self.filter_widget.text())
+
+    def insertItems(self, *args):
+        self.list_widget.insertItems(*args)
+        self.update_visible(self.filter_widget.text())
+
+    def insertItem(self, *args):
+        self.list_widget.insertItem(*args)
+        self.update_visible(self.filter_widget.text())

src/superqt/sliders/__init__.py

@@ -1,16 +1,10 @@
-try:
-    from ._version import version as __version__
-except ImportError:
-    __version__ = "unknown"
-
-from ._float_slider import QDoubleRangeSlider, QDoubleSlider
 from ._labeled import (
     QLabeledDoubleRangeSlider,
     QLabeledDoubleSlider,
     QLabeledRangeSlider,
     QLabeledSlider,
 )
-from ._qrangeslider import QRangeSlider
+from ._sliders import QDoubleRangeSlider, QDoubleSlider, QRangeSlider
 
 __all__ = [
     "QDoubleRangeSlider",

src/superqt/sliders/__init__.pyi

@@ -0,0 +1,12 @@
+from qtpy.QtWidgets import QSlider
+
+from ._generic_range_slider import _GenericRangeSlider
+from ._generic_slider import _GenericSlider
+
+class QDoubleRangeSlider(_GenericRangeSlider): ...
+class QDoubleSlider(_GenericSlider): ...
+class QRangeSlider(_GenericRangeSlider): ...
+class QLabeledSlider(QSlider): ...
+class QLabeledDoubleSlider(QDoubleSlider): ...
+class QLabeledRangeSlider(QRangeSlider): ...
+class QLabeledDoubleRangeSlider(QDoubleRangeSlider): ...

src/superqt/sliders/_generic_range_slider.py

@@ -0,0 +1,329 @@
+from typing import Generic, List, Sequence, Tuple, TypeVar, Union
+
+from qtpy import QtGui
+from qtpy.QtCore import Property, QEvent, QPoint, QPointF, QRect, QRectF, Qt, Signal
+from qtpy.QtWidgets import QSlider, QStyle, QStyleOptionSlider, QStylePainter
+
+from ._generic_slider import CC_SLIDER, SC_GROOVE, SC_HANDLE, SC_NONE, _GenericSlider
+from ._range_style import RangeSliderStyle, update_styles_from_stylesheet
+
+_T = TypeVar("_T")
+
+
+SC_BAR = QStyle.SubControl.SC_ScrollBarSubPage
+
+
+class _GenericRangeSlider(_GenericSlider[Tuple], Generic[_T]):
+    """MultiHandle Range Slider widget.
+
+    Same API as QSlider, but `value`, `setValue`, `sliderPosition`, and
+    `setSliderPosition` are all sequences of integers.
+
+    The `valueChanged` and `sliderMoved` signals also both emit a tuple of
+    integers.
+    """
+
+    # Emitted when the slider value has changed, with the new slider values
+    _valuesChanged = Signal(tuple)
+
+    # Emitted when sliderDown is true and the slider moves
+    # This usually happens when the user is dragging the slider
+    # The value is the positions of *all* handles.
+    _slidersMoved = Signal(tuple)
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.valueChanged = self._valuesChanged
+        self.sliderMoved = self._slidersMoved
+        # list of values
+        self._value: List[_T] = [20, 80]
+
+        # list of current positions of each handle. same length as _value
+        # If tracking is enabled (the default) this will be identical to _value
+        self._position: List[_T] = [20, 80]
+
+        # which handle is being pressed/hovered
+        self._pressedIndex = 0
+        self._hoverIndex = 0
+
+        # whether bar length is constant when dragging the bar
+        # if False, the bar can shorten when dragged beyond min/max
+        self._bar_is_rigid = True
+        # whether clicking on the bar moves all handles, or just the nearest handle
+        self._bar_moves_all = True
+        self._should_draw_bar = True
+
+        # color
+
+        self._style = RangeSliderStyle()
+        self.setStyleSheet("")
+        update_styles_from_stylesheet(self)
+
+    # ###############  New Public API  #######################
+
+    def barIsRigid(self) -> bool:
+        """Whether bar length is constant when dragging the bar.
+
+        If False, the bar can shorten when dragged beyond min/max. Default is True.
+        """
+        return self._bar_is_rigid
+
+    def setBarIsRigid(self, val: bool = True) -> None:
+        """Whether bar length is constant when dragging the bar.
+
+        If False, the bar can shorten when dragged beyond min/max. Default is True.
+        """
+        self._bar_is_rigid = bool(val)
+
+    def barMovesAllHandles(self) -> bool:
+        """Whether clicking on the bar moves all handles (default), or just the nearest."""
+        return self._bar_moves_all
+
+    def setBarMovesAllHandles(self, val: bool = True) -> None:
+        """Whether clicking on the bar moves all handles (default), or just the nearest."""
+        self._bar_moves_all = bool(val)
+
+    def barIsVisible(self) -> bool:
+        """Whether to show the bar between the first and last handle."""
+        return self._should_draw_bar
+
+    def setBarVisible(self, val: bool = True) -> None:
+        """Whether to show the bar between the first and last handle."""
+        self._should_draw_bar = bool(val)
+
+    def hideBar(self) -> None:
+        self.setBarVisible(False)
+
+    def showBar(self) -> None:
+        self.setBarVisible(True)
+
+    # ###############  QtOverrides  #######################
+
+    def value(self) -> Tuple[_T, ...]:
+        """Get current value of the widget as a tuple of integers."""
+        return tuple(self._value)
+
+    def sliderPosition(self):
+        """Get current value of the widget as a tuple of integers.
+
+        If tracking is enabled (the default) this will be identical to value().
+        """
+        return tuple(float(i) for i in self._position)
+
+    def setSliderPosition(self, pos: Union[float, Sequence[float]], index=None) -> None:
+        """Set current position of the handles with a sequence of integers.
+
+        If `pos` is a sequence, it must have the same length as `value()`.
+        If it is a scalar, index will be
+        """
+        if isinstance(pos, (list, tuple)):
+            val_len = len(self.value())
+            if len(pos) != val_len:
+                msg = f"'sliderPosition' must have same length as 'value()' ({val_len})"
+                raise ValueError(msg)
+            pairs = list(enumerate(pos))
+        else:
+            pairs = [(self._pressedIndex if index is None else index, pos)]
+
+        for idx, position in pairs:
+            self._position[idx] = self._bound(position, idx)
+
+        self._doSliderMove()
+
+    def setStyleSheet(self, styleSheet: str) -> None:
+        # sub-page styles render on top of the lower sliders and don't work here.
+        override = f"""
+            \n{type(self).__name__}::sub-page:horizontal {{background: none}}
+            \n{type(self).__name__}::sub-page:vertical {{background: none}}
+        """
+        return super().setStyleSheet(styleSheet + override)
+
+    def event(self, ev: QEvent) -> bool:
+        if ev.type() == QEvent.Type.StyleChange:
+            update_styles_from_stylesheet(self)
+        return super().event(ev)
+
+    def mouseMoveEvent(self, ev: QtGui.QMouseEvent) -> None:
+        if self._pressedControl == SC_BAR:
+            ev.accept()
+            delta = self._clickOffset - self._pixelPosToRangeValue(self._pick(ev.pos()))
+            self._offsetAllPositions(-delta, self._sldPosAtPress)
+        else:
+            super().mouseMoveEvent(ev)
+
+    # ###############  Implementation Details  #######################
+
+    def _setPosition(self, val):
+        self._position = list(val)
+
+    def _bound(self, value, index=None):
+        if isinstance(value, (list, tuple)):
+            return type(value)(self._bound(v) for v in value)
+        pos = super()._bound(value)
+        if index is not None:
+            pos = self._neighbor_bound(pos, index)
+        return self._type_cast(pos)
+
+    def _neighbor_bound(self, val, index):
+        # make sure we don't go lower than any preceding index:
+        min_dist = self.singleStep()
+        _lst = self._position
+        if index > 0:
+            val = max(_lst[index - 1] + min_dist, val)
+        # make sure we don't go higher than any following index:
+        if index < (len(_lst) - 1):
+            val = min(_lst[index + 1] - min_dist, val)
+        return val
+
+    def _getBarColor(self):
+        return self._style.brush(self._styleOption)
+
+    def _setBarColor(self, color):
+        self._style.brush_active = color
+
+    barColor = Property(QtGui.QBrush, _getBarColor, _setBarColor)
+
+    def _offsetAllPositions(self, offset: float, ref=None) -> None:
+        if ref is None:
+            ref = self._position
+        if self._bar_is_rigid:
+            # NOTE: This assumes monotonically increasing slider positions
+            if offset > 0 and ref[-1] + offset > self.maximum():
+                offset = self.maximum() - ref[-1]
+            elif ref[0] + offset < self.minimum():
+                offset = self.minimum() - ref[0]
+        self.setSliderPosition([i + offset for i in ref])
+
+    def _fixStyleOption(self, option):
+        pass
+
+    @property
+    def _optSliderPositions(self):
+        return [self._to_qinteger_space(p - self._minimum) for p in self._position]
+
+    # SubControl Positions
+
+    def _handleRect(self, handle_index: int, opt: QStyleOptionSlider = None) -> QRect:
+        """Return the QRect for all handles."""
+        opt = opt or self._styleOption
+        opt.sliderPosition = self._optSliderPositions[handle_index]
+        return self.style().subControlRect(CC_SLIDER, opt, SC_HANDLE, self)
+
+    def _barRect(self, opt: QStyleOptionSlider) -> QRect:
+        """Return the QRect for the bar between the outer handles."""
+        r_groove = self.style().subControlRect(CC_SLIDER, opt, SC_GROOVE, self)
+        r_bar = QRectF(r_groove)
+        hdl_low, hdl_high = self._handleRect(0, opt), self._handleRect(-1, opt)
+
+        thickness = self._style.thickness(opt)
+        offset = self._style.offset(opt)
+
+        if opt.orientation == Qt.Orientation.Horizontal:
+            r_bar.setTop(r_bar.center().y() - thickness / 2 + offset)
+            r_bar.setHeight(thickness)
+            r_bar.setLeft(hdl_low.center().x())
+            r_bar.setRight(hdl_high.center().x())
+        else:
+            r_bar.setLeft(r_bar.center().x() - thickness / 2 + offset)
+            r_bar.setWidth(thickness)
+            r_bar.setBottom(hdl_low.center().y())
+            r_bar.setTop(hdl_high.center().y())
+
+        return r_bar
+
+    # Painting
+
+    def _drawBar(self, painter: QStylePainter, opt: QStyleOptionSlider):
+        brush = self._style.brush(opt)
+        r_bar = self._barRect(opt)
+        if isinstance(brush, QtGui.QGradient):
+            brush.setStart(r_bar.topLeft())
+            brush.setFinalStop(r_bar.bottomRight())
+        painter.setPen(self._style.pen(opt))
+        painter.setBrush(brush)
+        painter.drawRect(r_bar)
+
+    def _draw_handle(self, painter: QStylePainter, opt: QStyleOptionSlider):
+        if self._should_draw_bar:
+            self._drawBar(painter, opt)
+
+        opt.subControls = SC_HANDLE
+        pidx = self._pressedIndex if self._pressedControl == SC_HANDLE else -1
+        hidx = self._hoverIndex if self._hoverControl == SC_HANDLE else -1
+        for idx, pos in enumerate(self._optSliderPositions):
+            opt.sliderPosition = pos
+            # make pressed handles appear sunken
+            if idx == pidx:
+                opt.state |= QStyle.StateFlag.State_Sunken
+            else:
+                opt.state = opt.state & ~QStyle.StateFlag.State_Sunken
+            opt.activeSubControls = SC_HANDLE if idx == hidx else SC_NONE
+            painter.drawComplexControl(CC_SLIDER, opt)
+
+    def _updateHoverControl(self, pos):
+        old_hover = self._hoverControl, self._hoverIndex
+        self._hoverControl, self._hoverIndex = self._getControlAtPos(pos)
+        if (self._hoverControl, self._hoverIndex) != old_hover:
+            self.update()
+
+    def _updatePressedControl(self, pos):
+        opt = self._styleOption
+        self._pressedControl, self._pressedIndex = self._getControlAtPos(pos, opt)
+
+    def _setClickOffset(self, pos):
+        if self._pressedControl == SC_BAR:
+            self._clickOffset = self._pixelPosToRangeValue(self._pick(pos))
+            self._sldPosAtPress = tuple(self._position)
+        elif self._pressedControl == SC_HANDLE:
+            hr = self._handleRect(self._pressedIndex)
+            self._clickOffset = self._pick(pos - hr.topLeft())
+
+    # NOTE: this is very much tied to mousepress... not a generic "get control"
+    def _getControlAtPos(
+        self, pos: QPoint, opt: QStyleOptionSlider = None
+    ) -> Tuple[QStyle.SubControl, int]:
+        """Update self._pressedControl based on ev.pos()."""
+        opt = opt or self._styleOption
+
+        if isinstance(pos, QPointF):
+            pos = pos.toPoint()
+
+        for i in range(len(self._position)):
+            if self._handleRect(i, opt).contains(pos):
+                return (SC_HANDLE, i)
+
+        click_pos = self._pixelPosToRangeValue(self._pick(pos))
+        for i, p in enumerate(self._position):
+            if p > click_pos:
+                if i > 0:
+                    # the click was in an internal segment
+                    if self._bar_moves_all:
+                        return (SC_BAR, i)
+                    avg = (self._position[i - 1] + self._position[i]) / 2
+                    return (SC_HANDLE, i - 1 if click_pos < avg else i)
+                # the click was below the minimum slider
+                return (SC_HANDLE, 0)
+        # the click was above the maximum slider
+        return (SC_HANDLE, len(self._position) - 1)
+
+    def _execute_scroll(self, steps_to_scroll, modifiers):
+        if modifiers & Qt.KeyboardModifier.AltModifier:
+            self._spreadAllPositions(shrink=steps_to_scroll < 0)
+        else:
+            self._offsetAllPositions(steps_to_scroll)
+        self.triggerAction(QSlider.SliderAction.SliderMove)
+
+    def _has_scroll_space_left(self, offset):
+        return (offset > 0 and max(self._value) < self._maximum) or (
+            offset < 0 and min(self._value) < self._minimum
+        )
+
+    def _spreadAllPositions(self, shrink=False, gain=1.1, ref=None) -> None:
+        if ref is None:
+            ref = self._position
+        # if self._bar_is_rigid:  # TODO
+
+        if shrink:
+            gain = 1 / gain
+        center = abs(ref[-1] + ref[0]) / 2
+        self.setSliderPosition([((i - center) * gain) + center for i in ref])

src/superqt/sliders/_generic_slider.py

@@ -0,0 +1,494 @@
+"""Generic Sliders with internal python-based models
+
+This module reimplements most of the logic from qslider.cpp in python:
+https://code.woboq.org/qt5/qtbase/src/widgets/widgets/qslider.cpp.html
+
+This probably looks like tremendous overkill at first (and it may be!),
+since a it's possible to acheive a very reasonable "float slider" by
+scaling input float values to some internal integer range for the QSlider,
+and converting back to float when getting `value()`.  However, one still
+runs into overflow limitations due to the internal integer model.
+
+In order to circumvent them, one needs to reimplement more and more of
+the attributes from QSliderPrivate in order to have the slider behave
+like a native slider (with all of the proper signals and options).
+So that's what `_GenericSlider` is below.
+
+`_GenericRangeSlider` is a variant that expects `value()` and
+`sliderPosition()` to be a sequence of scalars rather than a single
+scalar (with one handle per item), and it forms the basis of
+QRangeSlider.
+"""
+
+from typing import Generic, TypeVar
+
+from qtpy import QtGui
+from qtpy.QtCore import QEvent, QPoint, QPointF, QRect, Qt, Signal
+from qtpy.QtWidgets import (
+    QApplication,
+    QSlider,
+    QStyle,
+    QStyleOptionSlider,
+    QStylePainter,
+)
+
+_T = TypeVar("_T")
+
+SC_NONE = QStyle.SubControl.SC_None
+SC_HANDLE = QStyle.SubControl.SC_SliderHandle
+SC_GROOVE = QStyle.SubControl.SC_SliderGroove
+SC_TICKMARKS = QStyle.SubControl.SC_SliderTickmarks
+
+CC_SLIDER = QStyle.ComplexControl.CC_Slider
+QOVERFLOW = 2**31 - 1
+
+
+class _GenericSlider(QSlider, Generic[_T]):
+    _fvalueChanged = Signal(float)
+    _fsliderMoved = Signal(float)
+    _frangeChanged = Signal(float, float)
+
+    MAX_DISPLAY = 5000
+
+    def __init__(self, *args, **kwargs) -> None:
+
+        self._minimum = 0.0
+        self._maximum = 99.0
+        self._pageStep = 10.0
+        self._value: _T = 0.0  # type: ignore
+        self._position: _T = 0.0
+        self._singleStep = 1.0
+        self._offsetAccumulated = 0.0
+        self._blocktracking = False
+        self._tickInterval = 0.0
+        self._pressedControl = SC_NONE
+        self._hoverControl = SC_NONE
+        self._hoverRect = QRect()
+        self._clickOffset = 0.0
+
+        # for keyboard nav
+        self._repeatMultiplier = 1  # TODO
+        # for wheel nav
+        self._offset_accum = 0.0
+        # fraction of total range to scroll when holding Ctrl while scrolling
+        self._control_fraction = 0.04
+
+        super().__init__(*args, **kwargs)
+        self.valueChanged = self._fvalueChanged
+        self.sliderMoved = self._fsliderMoved
+        self.rangeChanged = self._frangeChanged
+
+        self.setAttribute(Qt.WidgetAttribute.WA_Hover)
+
+    # ###############  QtOverrides  #######################
+
+    def value(self) -> _T:  # type: ignore
+        return self._value
+
+    def setValue(self, value: _T) -> None:
+        value = self._bound(value)
+        if self._value == value and self._position == value:
+            return
+        self._value = value
+        if self._position != value:
+            self._setPosition(value)
+            if self.isSliderDown():
+                self.sliderMoved.emit(self.sliderPosition())
+        self.sliderChange(self.SliderChange.SliderValueChange)
+        self.valueChanged.emit(self.value())
+
+    def sliderPosition(self) -> _T:  # type: ignore
+        return self._position
+
+    def setSliderPosition(self, pos: _T) -> None:
+        position = self._bound(pos)
+        if position == self._position:
+            return
+        self._setPosition(position)
+        self._doSliderMove()
+
+    def singleStep(self) -> float:  # type: ignore
+        return self._singleStep
+
+    def setSingleStep(self, step: float) -> None:
+        if step != self._singleStep:
+            self._setSteps(step, self._pageStep)
+
+    def pageStep(self) -> float:  # type: ignore
+        return self._pageStep
+
+    def setPageStep(self, step: float) -> None:
+        if step != self._pageStep:
+            self._setSteps(self._singleStep, step)
+
+    def minimum(self) -> float:  # type: ignore
+        return self._minimum
+
+    def setMinimum(self, min: float) -> None:
+        self.setRange(min, max(self._maximum, min))
+
+    def maximum(self) -> float:  # type: ignore
+        return self._maximum
+
+    def setMaximum(self, max: float) -> None:
+        self.setRange(min(self._minimum, max), max)
+
+    def setRange(self, min: float, max_: float) -> None:
+        oldMin, self._minimum = self._minimum, float(min)
+        oldMax, self._maximum = self._maximum, float(max(min, max_))
+
+        if oldMin != self._minimum or oldMax != self._maximum:
+            self.sliderChange(self.SliderChange.SliderRangeChange)
+            self.rangeChanged.emit(self._minimum, self._maximum)
+            self.setValue(self._value)  # re-bound
+
+    def tickInterval(self) -> float:  # type: ignore
+        return self._tickInterval
+
+    def setTickInterval(self, ts: float) -> None:
+        self._tickInterval = max(0.0, ts)
+        self.update()
+
+    def triggerAction(self, action: QSlider.SliderAction) -> None:
+        self._blocktracking = True
+        # other actions here
+        # self.actionTriggered.emit(action)  # FIXME: type not working for all Qt
+        self._blocktracking = False
+        self.setValue(self._position)
+
+    def initStyleOption(self, option: QStyleOptionSlider) -> None:
+        option.initFrom(self)
+        option.subControls = SC_NONE
+        option.activeSubControls = SC_NONE
+        option.orientation = self.orientation()
+        option.tickPosition = self.tickPosition()
+        option.upsideDown = (
+            self.invertedAppearance()
+            != (option.direction == Qt.LayoutDirection.RightToLeft)
+            if self.orientation() == Qt.Orientation.Horizontal
+            else not self.invertedAppearance()
+        )
+        option.direction = (
+            Qt.LayoutDirection.LeftToRight
+        )  # we use the upsideDown option instead
+        # option.sliderValue = self._value  # type: ignore
+        # option.singleStep = self._singleStep  # type: ignore
+        if self.orientation() == Qt.Orientation.Horizontal:
+            option.state |= QStyle.StateFlag.State_Horizontal
+
+        # scale style option to integer space
+        option.minimum = 0
+        option.maximum = self.MAX_DISPLAY
+        option.tickInterval = self._to_qinteger_space(self._tickInterval)
+        option.pageStep = self._to_qinteger_space(self._pageStep)
+        option.singleStep = self._to_qinteger_space(self._singleStep)
+        self._fixStyleOption(option)
+
+    def event(self, ev: QEvent) -> bool:
+        if ev.type() == QEvent.Type.WindowActivate:
+            self.update()
+        elif ev.type() in (QEvent.Type.HoverEnter, QEvent.Type.HoverMove):
+            self._updateHoverControl(_event_position(ev))
+        elif ev.type() == QEvent.Type.HoverLeave:
+            self._hoverControl = SC_NONE
+            lastHoverRect, self._hoverRect = self._hoverRect, QRect()
+            self.update(lastHoverRect)
+        return super().event(ev)
+
+    def mousePressEvent(self, ev: QtGui.QMouseEvent) -> None:
+        if self._minimum == self._maximum or ev.buttons() ^ ev.button():
+            ev.ignore()
+            return
+
+        ev.accept()
+
+        pos = _event_position(ev)
+
+        # If the mouse button used is allowed to set the value
+        if ev.button() in (Qt.MouseButton.LeftButton, Qt.MouseButton.MiddleButton):
+            self._updatePressedControl(pos)
+            if self._pressedControl == SC_HANDLE:
+                opt = self._styleOption
+                sr = self.style().subControlRect(CC_SLIDER, opt, SC_HANDLE, self)
+                offset = sr.center() - sr.topLeft()
+                new_pos = self._pixelPosToRangeValue(self._pick(pos - offset))
+                self.setSliderPosition(new_pos)
+                self.triggerAction(QSlider.SliderAction.SliderMove)
+                self.setRepeatAction(QSlider.SliderAction.SliderNoAction)
+
+            self.update()
+        # elif: deal with PageSetButtons
+        else:
+            ev.ignore()
+
+        if self._pressedControl != SC_NONE:
+            self.setRepeatAction(QSlider.SliderAction.SliderNoAction)
+            self._setClickOffset(pos)
+            self.update()
+            self.setSliderDown(True)
+
+    def mouseMoveEvent(self, ev: QtGui.QMouseEvent) -> None:
+        # TODO: add pixelMetric(QStyle::PM_MaximumDragDistance, &opt, this);
+        if self._pressedControl == SC_NONE:
+            ev.ignore()
+            return
+        ev.accept()
+        pos = self._pick(_event_position(ev))
+        newPosition = self._pixelPosToRangeValue(pos - self._clickOffset)
+        self.setSliderPosition(newPosition)
+
+    def mouseReleaseEvent(self, ev: QtGui.QMouseEvent) -> None:
+        if self._pressedControl == SC_NONE or ev.buttons():
+            ev.ignore()
+            return
+
+        ev.accept()
+        oldPressed = self._pressedControl
+        self._pressedControl = SC_NONE
+        self.setRepeatAction(QSlider.SliderAction.SliderNoAction)
+        if oldPressed != SC_NONE:
+            self.setSliderDown(False)
+        self.update()
+
+    def wheelEvent(self, e: QtGui.QWheelEvent) -> None:
+
+        e.ignore()
+        vertical = bool(e.angleDelta().y())
+        delta = e.angleDelta().y() if vertical else e.angleDelta().x()
+        if e.inverted():
+            delta *= -1
+
+        orientation = Qt.Orientation.Vertical if vertical else Qt.Orientation.Horizontal
+        if self._scrollByDelta(orientation, e.modifiers(), delta):
+            e.accept()
+
+    def paintEvent(self, ev: QtGui.QPaintEvent) -> None:
+        painter = QStylePainter(self)
+        opt = self._styleOption
+
+        # draw groove and ticks
+        opt.subControls = SC_GROOVE
+        if opt.tickPosition != QSlider.TickPosition.NoTicks:
+            opt.subControls |= SC_TICKMARKS
+        painter.drawComplexControl(CC_SLIDER, opt)
+
+        self._draw_handle(painter, opt)
+
+    # ###############  Implementation Details  #######################
+
+    def _type_cast(self, val):
+        return val
+
+    def _setPosition(self, val):
+        self._position = val
+
+    def _bound(self, value: _T) -> _T:
+        return self._type_cast(max(self._minimum, min(self._maximum, value)))
+
+    def _fixStyleOption(self, option):
+        option.sliderPosition = self._to_qinteger_space(self._position - self._minimum)
+        option.sliderValue = self._to_qinteger_space(self._value - self._minimum)
+
+    def _to_qinteger_space(self, val, _max=None):
+        _max = _max or self.MAX_DISPLAY
+        return int(min(QOVERFLOW, val / (self._maximum - self._minimum) * _max))
+
+    def _pick(self, pt: QPoint) -> int:
+        return pt.x() if self.orientation() == Qt.Orientation.Horizontal else pt.y()
+
+    def _setSteps(self, single: float, page: float):
+        self._singleStep = single
+        self._pageStep = page
+        self.sliderChange(QSlider.SliderChange.SliderStepsChange)
+
+    def _doSliderMove(self):
+        if not self.hasTracking():
+            self.update()
+        if self.isSliderDown():
+            self.sliderMoved.emit(self.sliderPosition())
+        if self.hasTracking() and not self._blocktracking:
+            self.triggerAction(QSlider.SliderAction.SliderMove)
+
+    @property
+    def _styleOption(self):
+        opt = QStyleOptionSlider()
+        self.initStyleOption(opt)
+        return opt
+
+    def _updateHoverControl(self, pos: QPoint) -> bool:
+        lastHoverRect = self._hoverRect
+        lastHoverControl = self._hoverControl
+        doesHover = self.testAttribute(Qt.WidgetAttribute.WA_Hover)
+        if lastHoverControl != self._newHoverControl(pos) and doesHover:
+            self.update(lastHoverRect)
+            self.update(self._hoverRect)
+            return True
+        return not doesHover
+
+    def _newHoverControl(self, pos: QPoint) -> QStyle.SubControl:
+        opt = self._styleOption
+        opt.subControls = QStyle.SubControl.SC_All
+
+        handleRect = self.style().subControlRect(CC_SLIDER, opt, SC_HANDLE, self)
+        grooveRect = self.style().subControlRect(CC_SLIDER, opt, SC_GROOVE, self)
+        tickmarksRect = self.style().subControlRect(CC_SLIDER, opt, SC_TICKMARKS, self)
+
+        if handleRect.contains(pos):
+            self._hoverRect = handleRect
+            self._hoverControl = SC_HANDLE
+        elif grooveRect.contains(pos):
+            self._hoverRect = grooveRect
+            self._hoverControl = SC_GROOVE
+        elif tickmarksRect.contains(pos):
+            self._hoverRect = tickmarksRect
+            self._hoverControl = SC_TICKMARKS
+        else:
+            self._hoverRect = QRect()
+            self._hoverControl = SC_NONE
+        return self._hoverControl
+
+    def _setClickOffset(self, pos: QPoint):
+        hr = self.style().subControlRect(CC_SLIDER, self._styleOption, SC_HANDLE, self)
+        self._clickOffset = self._pick(pos - hr.topLeft())
+
+    def _updatePressedControl(self, pos: QPoint):
+        self._pressedControl = SC_HANDLE
+
+    def _draw_handle(self, painter, opt):
+        opt.subControls = SC_HANDLE
+        if self._pressedControl:
+            opt.activeSubControls = self._pressedControl
+            opt.state |= QStyle.StateFlag.State_Sunken
+        else:
+            opt.activeSubControls = self._hoverControl
+
+        painter.drawComplexControl(CC_SLIDER, opt)
+
+    # from QSliderPrivate.pixelPosToRangeValue
+    def _pixelPosToRangeValue(self, pos: int) -> float:
+        opt = self._styleOption
+
+        gr = self.style().subControlRect(CC_SLIDER, opt, SC_GROOVE, self)
+        sr = self.style().subControlRect(CC_SLIDER, opt, SC_HANDLE, self)
+
+        if self.orientation() == Qt.Orientation.Horizontal:
+            sliderLength = sr.width()
+            sliderMin = gr.x()
+            sliderMax = gr.right() - sliderLength + 1
+        else:
+            sliderLength = sr.height()
+            sliderMin = gr.y()
+            sliderMax = gr.bottom() - sliderLength + 1
+        return _sliderValueFromPosition(
+            self._minimum,
+            self._maximum,
+            pos - sliderMin,
+            sliderMax - sliderMin,
+            opt.upsideDown,
+        )
+
+    def _scrollByDelta(self, orientation, modifiers, delta: int) -> bool:
+        steps_to_scroll = 0.0
+        pg_step = self._pageStep
+
+        # in Qt scrolling to the right gives negative values.
+        if orientation == Qt.Orientation.Horizontal:
+            delta *= -1
+        offset = delta / 120
+        if modifiers & Qt.KeyboardModifier.ShiftModifier:
+            # Scroll one page regardless of delta:
+            steps_to_scroll = max(-pg_step, min(pg_step, offset * pg_step))
+            self._offset_accum = 0
+        elif modifiers & Qt.KeyboardModifier.ControlModifier:
+            _range = self._maximum - self._minimum
+            steps_to_scroll = offset * _range * self._control_fraction
+            self._offset_accum = 0
+        else:
+            # Calculate how many lines to scroll. Depending on what delta is (and
+            # offset), we might end up with a fraction (e.g. scroll 1.3 lines). We can
+            # only scroll whole lines, so we keep the reminder until next event.
+            wheel_scroll_lines = QApplication.wheelScrollLines()
+            steps_to_scrollF = wheel_scroll_lines * offset * self._effectiveSingleStep()
+            # Check if wheel changed direction since last event:
+            if self._offset_accum != 0 and (offset / self._offset_accum) < 0:
+                self._offset_accum = 0
+
+            self._offset_accum += steps_to_scrollF
+
+            # Don't scroll more than one page in any case:
+            steps_to_scroll = max(-pg_step, min(pg_step, self._offset_accum))
+            self._offset_accum -= self._offset_accum
+
+            if steps_to_scroll == 0:
+                # We moved less than a line, but might still have accumulated partial
+                # scroll, unless we already are at one of the ends.
+                effective_offset = self._offset_accum
+                if self.invertedControls():
+                    effective_offset *= -1
+                if self._has_scroll_space_left(effective_offset):
+                    return True
+                self._offset_accum = 0
+                return False
+
+        if self.invertedControls():
+            steps_to_scroll *= -1
+
+        prevValue = self._value
+        self._execute_scroll(steps_to_scroll, modifiers)
+        if prevValue == self._value:
+            self._offset_accum = 0
+            return False
+        return True
+
+    def _has_scroll_space_left(self, offset):
+        return (offset > 0 and self._value < self._maximum) or (
+            offset < 0 and self._value < self._minimum
+        )
+
+    def _execute_scroll(self, steps_to_scroll, modifiers):
+        self._setPosition(self._bound(self._overflowSafeAdd(steps_to_scroll)))
+        self.triggerAction(QSlider.SliderAction.SliderMove)
+
+    def _effectiveSingleStep(self) -> float:
+        return self._singleStep * self._repeatMultiplier
+
+    def _overflowSafeAdd(self, add: float) -> float:
+        newValue = self._value + add
+        if add > 0 and newValue < self._value:
+            newValue = self._maximum
+        elif add < 0 and newValue > self._value:
+            newValue = self._minimum
+        return newValue
+
+    # def keyPressEvent(self, ev: QtGui.QKeyEvent) -> None:
+    #     return  # TODO
+
+
+def _event_position(ev: QEvent) -> QPoint:
+    # safe for Qt6, Qt5, and hoverEvent
+    evp = getattr(ev, "position", getattr(ev, "pos", None))
+    pos = evp() if evp else QPoint()
+    if isinstance(pos, QPointF):
+        pos = pos.toPoint()
+    return pos
+
+
+def _sliderValueFromPosition(
+    min: float, max: float, position: int, span: int, upsideDown: bool = False
+) -> float:
+    """Converts the given pixel `position` to a value.
+
+    0 maps to the `min` parameter, `span` maps to `max` and other values are
+    distributed evenly in-between.
+
+    By default, this function assumes that the maximum value is on the right
+    for horizontal items and on the bottom for vertical items. Set the
+    `upsideDown` parameter to True to reverse this behavior.
+    """
+
+    if span <= 0 or position <= 0:
+        return max if upsideDown else min
+    if position >= span:
+        return min if upsideDown else max
+    tmp = (max - min) * (position / span)
+    return (max - tmp) if upsideDown else tmp + min

src/superqt/sliders/_labeled.py

@@ -1,11 +1,10 @@
 from enum import IntEnum
 from functools import partial
+from typing import Any
 
-from ._float_slider import QDoubleRangeSlider, QDoubleSlider
-from ._qrangeslider import QRangeSlider
-from .qtcompat.QtCore import QPoint, QSize, Qt, Signal
-from .qtcompat.QtGui import QFontMetrics, QValidator
-from .qtcompat.QtWidgets import (
+from qtpy.QtCore import QPoint, QSize, Qt, Signal
+from qtpy.QtGui import QFontMetrics, QValidator
+from qtpy.QtWidgets import (
     QAbstractSlider,
     QApplication,
     QDoubleSpinBox,
@@ -18,6 +17,8 @@ from .qtcompat.QtWidgets import (
     QWidget,
 )
 
+from ._sliders import QDoubleRangeSlider, QDoubleSlider, QRangeSlider
+
 
 class LabelPosition(IntEnum):
     NoLabel = 0
@@ -33,8 +34,8 @@ class EdgeLabelMode(IntEnum):
     LabelIsValue = 2
 
 
-class SliderProxy:
-    _slider: QAbstractSlider
+class _SliderProxy:
+    _slider: QSlider
 
     def value(self):
         return self._slider.value()
@@ -42,6 +43,12 @@ class SliderProxy:
     def setValue(self, value) -> None:
         self._slider.setValue(value)
 
+    def sliderPosition(self):
+        return self._slider.sliderPosition()
+
+    def setSliderPosition(self, pos) -> None:
+        self._slider.setSliderPosition(pos)
+
     def minimum(self):
         return self._slider.minimum()
 
@@ -69,10 +76,25 @@ class SliderProxy:
     def setRange(self, min, max) -> None:
         self._slider.setRange(min, max)
 
+    def tickInterval(self):
+        return self._slider.tickInterval()
+
+    def setTickInterval(self, interval) -> None:
+        self._slider.setTickInterval(interval)
+
+    def tickPosition(self):
+        return self._slider.tickPosition()
+
+    def setTickPosition(self, pos) -> None:
+        self._slider.setTickPosition(pos)
+
+    def __getattr__(self, name) -> Any:
+        return getattr(self._slider, name)
+
 
 def _handle_overloaded_slider_sig(args, kwargs):
     parent = None
-    orientation = Qt.Vertical
+    orientation = Qt.Orientation.Vertical
     errmsg = (
         "TypeError: arguments did not match any overloaded call:\n"
         "  QSlider(parent: QWidget = None)\n"
@@ -95,7 +117,8 @@ def _handle_overloaded_slider_sig(args, kwargs):
     return parent, orientation
 
 
-class QLabeledSlider(SliderProxy, QAbstractSlider):
+class QLabeledSlider(_SliderProxy, QAbstractSlider):
+    EdgeLabelMode = EdgeLabelMode
     _slider_class = QSlider
     _slider: QSlider
 
@@ -106,57 +129,100 @@ class QLabeledSlider(SliderProxy, QAbstractSlider):
 
         self._slider = self._slider_class()
         self._label = SliderLabel(self._slider, connect=self._slider.setValue)
+        self._edge_label_mode: EdgeLabelMode = EdgeLabelMode.LabelIsValue
 
+        self._rename_signals()
+        self._slider.actionTriggered.connect(self.actionTriggered.emit)
         self._slider.rangeChanged.connect(self.rangeChanged.emit)
-        self._slider.valueChanged.connect(self.valueChanged.emit)
+        self._slider.sliderMoved.connect(self.sliderMoved.emit)
+        self._slider.sliderPressed.connect(self.sliderPressed.emit)
+        self._slider.sliderReleased.connect(self.sliderReleased.emit)
         self._slider.valueChanged.connect(self._label.setValue)
+        self._slider.valueChanged.connect(self.valueChanged.emit)
 
         self.setOrientation(orientation)
 
+    def _rename_signals(self):
+        # for subclasses
+        pass
+
     def setOrientation(self, orientation):
         """Set orientation, value will be 'horizontal' or 'vertical'."""
         self._slider.setOrientation(orientation)
-        if orientation == Qt.Vertical:
+        marg = (0, 0, 0, 0)
+        if orientation == Qt.Orientation.Vertical:
             layout = QVBoxLayout()
-            layout.addWidget(self._slider, alignment=Qt.AlignHCenter)
-            layout.addWidget(self._label, alignment=Qt.AlignHCenter)
-            self._label.setAlignment(Qt.AlignCenter)
+            layout.addWidget(self._slider, alignment=Qt.AlignmentFlag.AlignHCenter)
+            layout.addWidget(self._label, alignment=Qt.AlignmentFlag.AlignHCenter)
+            self._label.setAlignment(Qt.AlignmentFlag.AlignCenter)
             layout.setSpacing(1)
         else:
+            if self._edge_label_mode == EdgeLabelMode.NoLabel:
+                marg = (0, 0, 5, 0)
+
             layout = QHBoxLayout()
             layout.addWidget(self._slider)
             layout.addWidget(self._label)
-            self._label.setAlignment(Qt.AlignRight)
+            self._label.setAlignment(Qt.AlignmentFlag.AlignRight)
             layout.setSpacing(6)
 
         old_layout = self.layout()
         if old_layout is not None:
             QWidget().setLayout(old_layout)
 
-        layout.setContentsMargins(0, 0, 0, 0)
+        layout.setContentsMargins(*marg)
         self.setLayout(layout)
 
+    def edgeLabelMode(self) -> EdgeLabelMode:
+        return self._edge_label_mode
+
+    def setEdgeLabelMode(self, opt: EdgeLabelMode) -> None:
+        if opt is EdgeLabelMode.LabelIsRange:
+            raise ValueError(
+                "mode must be one of 'EdgeLabelMode.NoLabel' or "
+                "'EdgeLabelMode.LabelIsValue'."
+            )
+
+        self._edge_label_mode = opt
+        if not self._edge_label_mode:
+            self._label.hide()
+            w = 5 if self.orientation() == Qt.Orientation.Horizontal else 0
+            self.layout().setContentsMargins(0, 0, w, 0)
+        else:
+            if self.isVisible():
+                self._label.show()
+            self._label.setMode(opt)
+            self._label.setValue(self._slider.value())
+            self.layout().setContentsMargins(0, 0, 0, 0)
+
+        QApplication.processEvents()
+
 
 class QLabeledDoubleSlider(QLabeledSlider):
     _slider_class = QDoubleSlider
     _slider: QDoubleSlider
-    valueChanged = Signal(float)
-    rangeChanged = Signal(float, float)
+    _fvalueChanged = Signal(float)
+    _fsliderMoved = Signal(float)
+    _frangeChanged = Signal(float, float)
 
     def __init__(self, *args, **kwargs) -> None:
         super().__init__(*args, **kwargs)
         self.setDecimals(2)
 
+    def _rename_signals(self):
+        self.valueChanged = self._fvalueChanged
+        self.sliderMoved = self._fsliderMoved
+        self.rangeChanged = self._frangeChanged
+
     def decimals(self) -> int:
-        return self._slider.decimals()
+        return self._label.decimals()
 
     def setDecimals(self, prec: int):
-        self._slider.setDecimals(prec)
         self._label.setDecimals(prec)
 
 
-class QLabeledRangeSlider(SliderProxy, QAbstractSlider):
-    valueChanged = Signal(tuple)
+class QLabeledRangeSlider(_SliderProxy, QAbstractSlider):
+    _valueChanged = Signal(tuple)
     LabelPosition = LabelPosition
     EdgeLabelMode = EdgeLabelMode
     _slider_class = QRangeSlider
@@ -165,7 +231,9 @@ class QLabeledRangeSlider(SliderProxy, QAbstractSlider):
     def __init__(self, *args, **kwargs) -> None:
         parent, orientation = _handle_overloaded_slider_sig(args, kwargs)
         super().__init__(parent)
-        self.setAttribute(Qt.WA_ShowWithoutActivating)
+        self._rename_signals()
+
+        self.setAttribute(Qt.WidgetAttribute.WA_ShowWithoutActivating)
         self._handle_labels = []
         self._handle_label_position: LabelPosition = LabelPosition.LabelsAbove
 
@@ -178,10 +246,14 @@ class QLabeledRangeSlider(SliderProxy, QAbstractSlider):
         self._slider.rangeChanged.connect(self.rangeChanged.emit)
 
         self._min_label = SliderLabel(
-            self._slider, alignment=Qt.AlignLeft, connect=self._min_label_edited
+            self._slider,
+            alignment=Qt.AlignmentFlag.AlignLeft,
+            connect=self._min_label_edited,
         )
         self._max_label = SliderLabel(
-            self._slider, alignment=Qt.AlignRight, connect=self._max_label_edited
+            self._slider,
+            alignment=Qt.AlignmentFlag.AlignRight,
+            connect=self._max_label_edited,
         )
         self.setEdgeLabelMode(EdgeLabelMode.LabelIsRange)
 
@@ -192,6 +264,9 @@ class QLabeledRangeSlider(SliderProxy, QAbstractSlider):
         self._on_range_changed(self._slider.minimum(), self._slider.maximum())
         self.setOrientation(orientation)
 
+    def _rename_signals(self):
+        self.valueChanged = self._valueChanged
+
     def handleLabelPosition(self) -> LabelPosition:
         return self._handle_label_position
 
@@ -232,11 +307,12 @@ class QLabeledRangeSlider(SliderProxy, QAbstractSlider):
         if not self._handle_labels:
             return
 
-        horizontal = self.orientation() == Qt.Horizontal
+        horizontal = self.orientation() == Qt.Orientation.Horizontal
         labels_above = self._handle_label_position == LabelPosition.LabelsAbove
 
         last_edge = None
-        for label, rect in zip(self._handle_labels, self._slider._handleRects()):
+        for i, label in enumerate(self._handle_labels):
+            rect = self._slider._handleRect(i)
             dx = -label.width() / 2
             dy = -label.height() / 2
             if labels_above:
@@ -260,6 +336,7 @@ class QLabeledRangeSlider(SliderProxy, QAbstractSlider):
             label.move(pos)
             last_edge = pos
             label.clearFocus()
+        self.update()
 
     def _min_label_edited(self, val):
         if self._edge_label_mode == EdgeLabelMode.LabelIsRange:
@@ -290,7 +367,7 @@ class QLabeledRangeSlider(SliderProxy, QAbstractSlider):
                 lbl.deleteLater()
             self._handle_labels.clear()
             for n, val in enumerate(self._slider.value()):
-                _cb = partial(self._slider._setSliderPositionAt, n)
+                _cb = partial(self._slider.setSliderPosition, index=n)
                 s = SliderLabel(self._slider, parent=self, connect=_cb)
                 s.setValue(val)
                 self._handle_labels.append(s)
@@ -300,7 +377,8 @@ class QLabeledRangeSlider(SliderProxy, QAbstractSlider):
         self._reposition_labels()
 
     def _on_range_changed(self, min, max):
-        self._slider.setRange(min, max)
+        if (min, max) != (self._slider.minimum(), self._slider.maximum()):
+            self._slider.setRange(min, max)
         for lbl in self._handle_labels:
             lbl.setRange(min, max)
         if self._edge_label_mode == EdgeLabelMode.LabelIsRange:
@@ -319,7 +397,7 @@ class QLabeledRangeSlider(SliderProxy, QAbstractSlider):
         """Set orientation, value will be 'horizontal' or 'vertical'."""
 
         self._slider.setOrientation(orientation)
-        if orientation == Qt.Vertical:
+        if orientation == Qt.Orientation.Vertical:
             layout = QVBoxLayout()
             layout.setSpacing(1)
             layout.addWidget(self._max_label)
@@ -332,7 +410,7 @@ class QLabeledRangeSlider(SliderProxy, QAbstractSlider):
                 marg = (0, 0, 0, 0)
             else:
                 marg = (0, 0, 20, 0)
-            layout.setAlignment(Qt.AlignCenter)
+            layout.setAlignment(Qt.AlignmentFlag.AlignCenter)
         else:
             layout = QHBoxLayout()
             layout.setSpacing(7)
@@ -365,17 +443,20 @@ class QLabeledRangeSlider(SliderProxy, QAbstractSlider):
 class QLabeledDoubleRangeSlider(QLabeledRangeSlider):
     _slider_class = QDoubleRangeSlider
     _slider: QDoubleRangeSlider
-    rangeChanged = Signal(float, float)
+    _frangeChanged = Signal(float, float)
 
     def __init__(self, *args, **kwargs) -> None:
         super().__init__(*args, **kwargs)
         self.setDecimals(2)
 
+    def _rename_signals(self):
+        super()._rename_signals()
+        self.rangeChanged = self._frangeChanged
+
     def decimals(self) -> int:
-        return self._slider.decimals()
+        return self._min_label.decimals()
 
     def setDecimals(self, prec: int):
-        self._slider.setDecimals(prec)
         self._min_label.setDecimals(prec)
         self._max_label.setDecimals(prec)
         for lbl in self._handle_labels:
@@ -384,18 +465,22 @@ class QLabeledDoubleRangeSlider(QLabeledRangeSlider):
 
 class SliderLabel(QDoubleSpinBox):
     def __init__(
-        self, slider: QSlider, parent=None, alignment=Qt.AlignCenter, connect=None
+        self,
+        slider: QSlider,
+        parent=None,
+        alignment=Qt.AlignmentFlag.AlignCenter,
+        connect=None,
     ) -> None:
         super().__init__(parent=parent)
         self._slider = slider
-        self.setFocusPolicy(Qt.ClickFocus)
+        self.setFocusPolicy(Qt.FocusPolicy.ClickFocus)
         self.setMode(EdgeLabelMode.LabelIsValue)
         self.setDecimals(0)
 
         self.setRange(slider.minimum(), slider.maximum())
         slider.rangeChanged.connect(self._update_size)
         self.setAlignment(alignment)
-        self.setButtonSymbols(QSpinBox.NoButtons)
+        self.setButtonSymbols(QSpinBox.ButtonSymbols.NoButtons)
         self.setStyleSheet("background:transparent; border: 0;")
         if connect is not None:
             self.editingFinished.connect(lambda: connect(self.value()))
@@ -406,7 +491,7 @@ class SliderLabel(QDoubleSpinBox):
         super().setDecimals(prec)
         self._update_size()
 
-    def _update_size(self):
+    def _update_size(self, *_):
         # fontmetrics to measure the width of text
         fm = QFontMetrics(self.font())
         h = self.sizeHint().height()
@@ -427,10 +512,12 @@ class SliderLabel(QDoubleSpinBox):
         # get the final size hint
         opt = QStyleOptionSpinBox()
         self.initStyleOption(opt)
-        size = self.style().sizeFromContents(QStyle.CT_SpinBox, opt, QSize(w, h), self)
+        size = self.style().sizeFromContents(
+            QStyle.ContentsType.CT_SpinBox, opt, QSize(w, h), self
+        )
         self.setFixedSize(size)
 
-    def setValue(self, val):
+    def setValue(self, val: Any) -> None:
         super().setValue(val)
         if self._mode == EdgeLabelMode.LabelIsRange:
             self._update_size()

src/superqt/sliders/_range_style.py

@@ -1,11 +1,13 @@
+from __future__ import annotations
+
 import platform
 import re
 from dataclasses import dataclass, replace
-from typing import TYPE_CHECKING, Union
+from typing import TYPE_CHECKING
 
-from .qtcompat import PYQT_VERSION
-from .qtcompat.QtCore import Qt
-from .qtcompat.QtGui import (
+from qtpy import QT_VERSION
+from qtpy.QtCore import Qt
+from qtpy.QtGui import (
     QBrush,
     QColor,
     QGradient,
@@ -13,34 +15,34 @@ from .qtcompat.QtGui import (
     QPalette,
     QRadialGradient,
 )
-from .qtcompat.QtWidgets import QApplication, QSlider, QStyleOptionSlider
+from qtpy.QtWidgets import QApplication, QSlider, QStyleOptionSlider
 
 if TYPE_CHECKING:
-    from ._qrangeslider import QRangeSlider
+    from ._generic_range_slider import _GenericRangeSlider
 
 
 @dataclass
 class RangeSliderStyle:
-    brush_active: str = None
-    brush_inactive: str = None
-    brush_disabled: str = None
-    pen_active: str = None
-    pen_inactive: str = None
-    pen_disabled: str = None
-    vertical_thickness: float = None
-    horizontal_thickness: float = None
-    tick_offset: float = None
-    tick_bar_alpha: float = None
-    v_offset: float = None
-    h_offset: float = None
+    brush_active: str | None = None
+    brush_inactive: str | None = None
+    brush_disabled: str | None = None
+    pen_active: str | None = None
+    pen_inactive: str | None = None
+    pen_disabled: str | None = None
+    vertical_thickness: float | None = None
+    horizontal_thickness: float | None = None
+    tick_offset: float | None = None
+    tick_bar_alpha: float | None = None
+    v_offset: float | None = None
+    h_offset: float | None = None
     has_stylesheet: bool = False
 
     def brush(self, opt: QStyleOptionSlider) -> QBrush:
         cg = opt.palette.currentColorGroup()
         attr = {
-            QPalette.Active: "brush_active",  # 0
-            QPalette.Disabled: "brush_disabled",  # 1
-            QPalette.Inactive: "brush_inactive",  # 2
+            QPalette.ColorGroup.Active: "brush_active",  # 0
+            QPalette.ColorGroup.Disabled: "brush_disabled",  # 1
+            QPalette.ColorGroup.Inactive: "brush_inactive",  # 2
         }[cg]
         _val = getattr(self, attr)
         if not _val:
@@ -65,24 +67,24 @@ class RangeSliderStyle:
         else:
             val = _val
 
-        if opt.tickPosition != QSlider.NoTicks:
+        if opt.tickPosition != QSlider.TickPosition.NoTicks:
             val.setAlphaF(self.tick_bar_alpha or SYSTEM_STYLE.tick_bar_alpha)
 
         return QBrush(val)
 
-    def pen(self, opt: QStyleOptionSlider) -> Union[Qt.PenStyle, QColor]:
+    def pen(self, opt: QStyleOptionSlider) -> Qt.PenStyle | QColor:
         cg = opt.palette.currentColorGroup()
         attr = {
-            QPalette.Active: "pen_active",  # 0
-            QPalette.Disabled: "pen_disabled",  # 1
-            QPalette.Inactive: "pen_inactive",  # 2
+            QPalette.ColorGroup.Active: "pen_active",  # 0
+            QPalette.ColorGroup.Disabled: "pen_disabled",  # 1
+            QPalette.ColorGroup.Inactive: "pen_inactive",  # 2
         }[cg]
         val = getattr(self, attr) or getattr(SYSTEM_STYLE, attr)
         if not val:
-            return Qt.NoPen
+            return Qt.PenStyle.NoPen
         if isinstance(val, str):
             val = QColor(val)
-        if opt.tickPosition != QSlider.NoTicks:
+        if opt.tickPosition != QSlider.TickPosition.NoTicks:
             val.setAlphaF(self.tick_bar_alpha or SYSTEM_STYLE.tick_bar_alpha)
 
         return val
@@ -91,18 +93,18 @@ class RangeSliderStyle:
         tp = opt.tickPosition
         off = 0
         if not self.has_stylesheet:
-            if opt.orientation == Qt.Horizontal:
+            if opt.orientation == Qt.Orientation.Horizontal:
                 off += self.h_offset or SYSTEM_STYLE.h_offset or 0
             else:
                 off += self.v_offset or SYSTEM_STYLE.v_offset or 0
-            if tp == QSlider.TicksAbove:
+            if tp == QSlider.TickPosition.TicksAbove:
                 off += self.tick_offset or SYSTEM_STYLE.tick_offset
-            elif tp == QSlider.TicksBelow:
+            elif tp == QSlider.TickPosition.TicksBelow:
                 off -= self.tick_offset or SYSTEM_STYLE.tick_offset
         return off
 
     def thickness(self, opt: QStyleOptionSlider) -> float:
-        if opt.orientation == Qt.Horizontal:
+        if opt.orientation == Qt.Orientation.Horizontal:
             return self.horizontal_thickness or SYSTEM_STYLE.horizontal_thickness
         else:
             return self.vertical_thickness or SYSTEM_STYLE.vertical_thickness
@@ -137,7 +139,7 @@ CATALINA_STYLE = replace(
     tick_offset=4,
 )
 
-if PYQT_VERSION and int(PYQT_VERSION.split(".")[0]) == 6:
+if QT_VERSION and int(QT_VERSION.split(".")[0]) == 6:
     CATALINA_STYLE = replace(CATALINA_STYLE, tick_offset=2)
 
 BIG_SUR_STYLE = replace(
@@ -152,7 +154,7 @@ BIG_SUR_STYLE = replace(
     tick_bar_alpha=0.2,
 )
 
-if PYQT_VERSION and int(PYQT_VERSION.split(".")[0]) == 6:
+if QT_VERSION and int(QT_VERSION.split(".")[0]) == 6:
     BIG_SUR_STYLE = replace(BIG_SUR_STYLE, tick_offset=-3)
 
 WINDOWS_STYLE = replace(
@@ -226,7 +228,7 @@ rgba_pattern = re.compile(
 )
 
 
-def parse_color(color: str, default_attr) -> Union[QColor, QGradient]:
+def parse_color(color: str, default_attr) -> QColor | QGradient:
     qc = QColor(color)
     if qc.isValid():
         return qc
@@ -239,7 +241,7 @@ def parse_color(color: str, default_attr) -> Union[QColor, QGradient]:
     # try linear gradient:
     match = qlineargrad_pattern.search(color)
     if match:
-        grad = QLinearGradient(*[float(i) for i in match.groups()[:4]])
+        grad = QLinearGradient(*(float(i) for i in match.groups()[:4]))
         grad.setColorAt(0, QColor(match.groupdict()["stop0"]))
         grad.setColorAt(1, QColor(match.groupdict()["stop1"]))
         return grad
@@ -247,7 +249,7 @@ def parse_color(color: str, default_attr) -> Union[QColor, QGradient]:
     # try linear gradient:
     match = qradial_pattern.search(color)
     if match:
-        grad = QRadialGradient(*[float(i) for i in match.groups()[:5]])
+        grad = QRadialGradient(*(float(i) for i in match.groups()[:5]))
         grad.setColorAt(0, QColor(match.groupdict()["stop0"]))
         grad.setColorAt(1, QColor(match.groupdict()["stop1"]))
         return grad
@@ -256,7 +258,7 @@ def parse_color(color: str, default_attr) -> Union[QColor, QGradient]:
     return QColor(getattr(SYSTEM_STYLE, default_attr))
 
 
-def update_styles_from_stylesheet(obj: "QRangeSlider"):
+def update_styles_from_stylesheet(obj: _GenericRangeSlider):
     qss = obj.styleSheet()
 
     parent = obj.parent()

src/superqt/sliders/_sliders.py

@@ -0,0 +1,43 @@
+from qtpy.QtCore import Signal
+
+from ._generic_range_slider import _GenericRangeSlider
+from ._generic_slider import _GenericSlider
+
+
+class _IntMixin:
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self._singleStep = 1
+
+    def _type_cast(self, value) -> int:
+        return int(round(value))
+
+
+class _FloatMixin:
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self._singleStep = 0.01
+        self._pageStep = 0.1
+
+    def _type_cast(self, value) -> float:
+        return float(value)
+
+
+class QDoubleSlider(_FloatMixin, _GenericSlider[float]):
+    pass
+
+
+class QIntSlider(_IntMixin, _GenericSlider[int]):
+    # mostly just an example... use QSlider instead.
+    valueChanged = Signal(int)
+
+
+class QRangeSlider(_IntMixin, _GenericRangeSlider):
+    pass
+
+
+class QDoubleRangeSlider(_FloatMixin, QRangeSlider):
+    pass
+
+
+# QRangeSlider.__doc__ += "\n" + textwrap.indent(QSlider.__doc__, "    ")

src/superqt/spinbox/__init__.py

@@ -0,0 +1,3 @@
+from ._intspin import QLargeIntSpinBox
+
+__all__ = ["QLargeIntSpinBox"]

src/superqt/spinbox/_intspin.py

@@ -0,0 +1,176 @@
+from enum import Enum
+
+from qtpy.QtCore import QSize, Qt, Signal
+from qtpy.QtGui import QFontMetrics, QValidator
+from qtpy.QtWidgets import QAbstractSpinBox, QStyle, QStyleOptionSpinBox
+
+
+class _EmitPolicy(Enum):
+    EmitIfChanged = 0
+    AlwaysEmit = 1
+    NeverEmit = 2
+
+
+class _AnyIntValidator(QValidator):
+    def __init__(self, parent=None) -> None:
+        super().__init__(parent)
+
+    def validate(self, input: str, pos: int):
+        if not input.lstrip("-"):
+            return QValidator.State.Intermediate, input, len(input)
+        if input.lstrip("-").isnumeric():
+            return QValidator.State.Acceptable, input, len(input)
+        return QValidator.State.Invalid, input, len(input)
+
+
+class QLargeIntSpinBox(QAbstractSpinBox):
+    """An integer spinboxes backed by unbound python integer
+
+    Qt's built-in ``QSpinBox`` is backed by a signed 32-bit integer.
+    This could become limiting, particularly in large dense segmentations.
+    This class behaves like a ``QSpinBox`` backed by an unbound python int.
+
+    Does not yet support "prefix", "suffix" or "specialValue" like QSpinBox.
+    """
+
+    textChanged = Signal(str)
+    valueChanged = Signal(object)  # object instead of int for large ints
+
+    def __init__(self, parent=None) -> None:
+        super().__init__(parent)
+        self._value: int = 0
+        self._minimum: int = 0
+        self._maximum: int = 2**64 - 1
+        self._single_step: int = 1
+        self._pending_emit = False
+        validator = _AnyIntValidator(self)
+        self.lineEdit().setValidator(validator)
+        self.lineEdit().textChanged.connect(self._editor_text_changed)
+        self.setValue(0)
+
+    # ###############  Public Functions  #######################
+
+    def value(self):
+        return self._value
+
+    def setValue(self, value):
+        self._setValue(value, _EmitPolicy.EmitIfChanged)
+
+    def minimum(self):
+        return self._minimum
+
+    def setMinimum(self, min):
+        self._minimum = int(min)
+
+    def maximum(self):
+        return self._maximum
+
+    def setMaximum(self, max):
+        self._maximum = int(max)
+
+    def setRange(self, minimum, maximum):
+        self.setMinimum(minimum)
+        self.setMaximum(maximum)
+
+    def singleStep(self):
+        return self._single_step
+
+    def setSingleStep(self, step):
+        self._single_step = int(step)
+
+    # TODO: add prefix/suffix/stepType
+
+    # ###############  QtOverrides  #######################
+
+    def focusOutEvent(self, e) -> None:
+        if self._pending_emit:
+            self._interpret(_EmitPolicy.EmitIfChanged)
+        return super().focusOutEvent(e)
+
+    def closeEvent(self, e) -> None:
+        if self._pending_emit:
+            self._interpret(_EmitPolicy.EmitIfChanged)
+        return super().closeEvent(e)
+
+    def keyPressEvent(self, e) -> None:
+        if e.key() in (Qt.Key.Key_Enter, Qt.Key.Key_Return):
+            self._interpret(
+                _EmitPolicy.AlwaysEmit
+                if self.keyboardTracking()
+                else _EmitPolicy.EmitIfChanged
+            )
+        return super().keyPressEvent(e)
+
+    def stepBy(self, steps: int) -> None:
+        step = self._single_step
+        old = self._value
+        e = _EmitPolicy.EmitIfChanged
+        if self._pending_emit:
+            self._interpret(_EmitPolicy.NeverEmit)
+            if self._value != old:
+                e = _EmitPolicy.AlwaysEmit
+        self._setValue(self._bound(self._value + (step * steps)), e)
+
+    def stepEnabled(self):
+        flags = QAbstractSpinBox.StepEnabledFlag.StepNone
+        if self.isReadOnly():
+            return flags
+        if self._value < self._maximum:
+            flags |= QAbstractSpinBox.StepEnabledFlag.StepUpEnabled
+        if self._value > self._minimum:
+            flags |= QAbstractSpinBox.StepEnabledFlag.StepDownEnabled
+        return flags
+
+    def sizeHint(self):
+        self.ensurePolished()
+        fm = QFontMetrics(self.font())
+        h = self.lineEdit().sizeHint().height()
+        if hasattr(fm, "horizontalAdvance"):
+            # Qt >= 5.11
+            w = fm.horizontalAdvance(str(self._value)) + 3
+        else:
+            w = fm.width(str(self._value)) + 3
+        w = max(36, w)
+        opt = QStyleOptionSpinBox()
+        self.initStyleOption(opt)
+        hint = QSize(w, h)
+        return self.style().sizeFromContents(
+            QStyle.ContentsType.CT_SpinBox, opt, hint, self
+        )
+
+    # ###############  Implementation Details  #######################
+
+    def _setValue(self, value, policy):
+        self._value, old = self._bound(int(value)), self._value
+        self._pending_emit = False
+        self._updateEdit()
+        self.update()
+
+        if policy is _EmitPolicy.AlwaysEmit or (
+            policy is _EmitPolicy.EmitIfChanged and self._value != old
+        ):
+            self._pending_emit = False
+            self.textChanged.emit(self.lineEdit().displayText())
+            self.valueChanged.emit(self._value)
+
+    def _updateEdit(self):
+        new_text = str(self._value)
+        if self.lineEdit().text() == new_text:
+            return
+        self.lineEdit().setText(new_text)
+
+    def _interpret(self, policy):
+        text = self.lineEdit().displayText() or str(self._value)
+        v = int(text)
+        self._setValue(v, policy)
+
+    def _editor_text_changed(self, t):
+        if self.keyboardTracking():
+            self._setValue(int(t), _EmitPolicy.EmitIfChanged)
+            self.lineEdit().setFocus()
+            self._pending_emit = False
+        else:
+            self._pending_emit = True
+
+    def _bound(self, value):
+        return max(self._minimum, min(self._maximum, value))

src/superqt/utils/__init__.py

@@ -0,0 +1,30 @@
+__all__ = (
+    "create_worker",
+    "ensure_main_thread",
+    "ensure_object_thread",
+    "FunctionWorker",
+    "GeneratorWorker",
+    "new_worker_qthread",
+    "qdebounced",
+    "QMessageHandler",
+    "QSignalDebouncer",
+    "QSignalThrottler",
+    "qthrottled",
+    "signals_blocked",
+    "thread_worker",
+    "WorkerBase",
+)
+
+
+from ._ensure_thread import ensure_main_thread, ensure_object_thread
+from ._message_handler import QMessageHandler
+from ._misc import signals_blocked
+from ._qthreading import (
+    FunctionWorker,
+    GeneratorWorker,
+    WorkerBase,
+    create_worker,
+    new_worker_qthread,
+    thread_worker,
+)
+from ._throttler import QSignalDebouncer, QSignalThrottler, qdebounced, qthrottled

src/superqt/utils/_ensure_thread.py

@@ -0,0 +1,125 @@
+# https://gist.github.com/FlorianRhiem/41a1ad9b694c14fb9ac3
+from concurrent.futures import Future
+from functools import wraps
+from typing import Callable, List, Optional
+
+from qtpy.QtCore import (
+    QCoreApplication,
+    QMetaObject,
+    QObject,
+    Qt,
+    QThread,
+    Signal,
+    Slot,
+)
+
+
+class CallCallable(QObject):
+    finished = Signal(object)
+    instances: List["CallCallable"] = []
+
+    def __init__(self, callable, *args, **kwargs):
+        super().__init__()
+        self._callable = callable
+        self._args = args
+        self._kwargs = kwargs
+        CallCallable.instances.append(self)
+
+    @Slot()
+    def call(self):
+        CallCallable.instances.remove(self)
+        res = self._callable(*self._args, **self._kwargs)
+        self.finished.emit(res)
+
+
+def ensure_main_thread(
+    func: Optional[Callable] = None, await_return: bool = False, timeout: int = 1000
+):
+    """Decorator that ensures a function is called in the main QApplication thread.
+
+    It can be applied to functions or methods.
+
+    Parameters
+    ----------
+    func : callable
+        The method to decorate, must be a method on a QObject.
+    await_return : bool, optional
+        Whether to block and wait for the result of the function, or return immediately.
+        by default False
+    timeout : int, optional
+        If `await_return` is `True`, time (in milliseconds) to wait for the result
+        before raising a TimeoutError, by default 1000
+    """
+
+    def _out_func(func_):
+        @wraps(func_)
+        def _func(*args, **kwargs):
+            return _run_in_thread(
+                func_,
+                QCoreApplication.instance().thread(),
+                await_return,
+                timeout,
+                *args,
+                **kwargs,
+            )
+
+        return _func
+
+    if func is None:
+        return _out_func
+    return _out_func(func)
+
+
+def ensure_object_thread(
+    func: Optional[Callable] = None, await_return: bool = False, timeout: int = 1000
+):
+    """Decorator that ensures a QObject method is called in the object's thread.
+
+    It must be applied to methods of QObjects subclasses.
+
+    Parameters
+    ----------
+    func : callable
+        The method to decorate, must be a method on a QObject.
+    await_return : bool, optional
+        Whether to block and wait for the result of the function, or return immediately.
+        by default False
+    timeout : int, optional
+        If `await_return` is `True`, time (in milliseconds) to wait for the result
+        before raising a TimeoutError, by default 1000
+    """
+
+    def _out_func(func_):
+        @wraps(func_)
+        def _func(self, *args, **kwargs):
+            return _run_in_thread(
+                func_, self.thread(), await_return, timeout, self, *args, **kwargs
+            )
+
+        return _func
+
+    if func is None:
+        return _out_func
+    return _out_func(func)
+
+
+def _run_in_thread(
+    func: Callable,
+    thread: QThread,
+    await_return: bool,
+    timeout: int,
+    *args,
+    **kwargs,
+):
+    future = Future()  # type: ignore
+    if thread is QThread.currentThread():
+        result = func(*args, **kwargs)
+        if not await_return:
+            future.set_result(result)
+            return future
+        return result
+    f = CallCallable(func, *args, **kwargs)
+    f.moveToThread(thread)
+    f.finished.connect(future.set_result, Qt.ConnectionType.DirectConnection)
+    QMetaObject.invokeMethod(f, "call", Qt.ConnectionType.QueuedConnection)  # type: ignore
+    return future.result(timeout=timeout / 1000) if await_return else future

src/superqt/utils/_ensure_thread.pyi

@@ -0,0 +1,52 @@
+from concurrent.futures import Future
+from typing import Callable, TypeVar, overload
+
+from typing_extensions import Literal, ParamSpec
+
+P = ParamSpec("P")
+R = TypeVar("R")
+
+@overload
+def ensure_main_thread(
+    await_return: Literal[True],
+    timeout: int = 1000,
+) -> Callable[[Callable[P, R]], Callable[P, R]]: ...
+@overload
+def ensure_main_thread(
+    func: Callable[P, R],
+    await_return: Literal[True],
+    timeout: int = 1000,
+) -> Callable[P, R]: ...
+@overload
+def ensure_main_thread(
+    await_return: Literal[False] = False,
+    timeout: int = 1000,
+) -> Callable[[Callable[P, R]], Callable[P, Future[R]]]: ...
+@overload
+def ensure_main_thread(
+    func: Callable[P, R],
+    await_return: Literal[False] = False,
+    timeout: int = 1000,
+) -> Callable[P, Future[R]]: ...
+@overload
+def ensure_object_thread(
+    await_return: Literal[True],
+    timeout: int = 1000,
+) -> Callable[[Callable[P, R]], Callable[P, R]]: ...
+@overload
+def ensure_object_thread(
+    func: Callable[P, R],
+    await_return: Literal[True],
+    timeout: int = 1000,
+) -> Callable[P, R]: ...
+@overload
+def ensure_object_thread(
+    await_return: Literal[False] = False,
+    timeout: int = 1000,
+) -> Callable[[Callable[P, R]], Callable[P, Future[R]]]: ...
+@overload
+def ensure_object_thread(
+    func: Callable[P, R],
+    await_return: Literal[False] = False,
+    timeout: int = 1000,
+) -> Callable[P, Future[R]]: ...

src/superqt/utils/_message_handler.py

@@ -0,0 +1,94 @@
+import logging
+from contextlib import suppress
+from typing import List, NamedTuple, Optional
+
+from qtpy.QtCore import QMessageLogContext, QtMsgType, qInstallMessageHandler
+
+
+class Record(NamedTuple):
+    level: int
+    message: str
+    ctx: dict
+
+
+class QMessageHandler:
+    """A context manager to intercept messages from Qt.
+
+    Parameters
+    ----------
+    logger : logging.Logger, optional
+        If provided, intercepted messages will be logged with `logger` at the
+        corresponding python log level, by default None
+
+    Attributes
+    ----------
+    records: list of tuple
+        Captured messages. This is a 3-tuple of:
+        `(log_level: int, message: str, context: dict)`
+
+    Examples
+    --------
+
+    >>> handler = QMessageHandler()
+    >>> handler.install()  # now all Qt output will be available at mh.records
+
+    >>> with QMessageHandler() as handler:  # temporarily install
+    ...     ...
+
+    >>> logger = logging.getLogger(__name__)
+    >>> with QMessageHandler(logger):  # re-reoute Qt messages to a python logger.
+    ...    ...
+    """
+
+    _qt2loggertype = {
+        QtMsgType.QtDebugMsg: logging.DEBUG,
+        QtMsgType.QtInfoMsg: logging.INFO,
+        QtMsgType.QtWarningMsg: logging.WARNING,
+        QtMsgType.QtCriticalMsg: logging.ERROR,  # note
+        QtMsgType.QtFatalMsg: logging.CRITICAL,  # note
+        QtMsgType.QtSystemMsg: logging.CRITICAL,
+    }
+
+    def __init__(self, logger: Optional[logging.Logger] = None):
+        self.records: List[Record] = []
+        self._logger = logger
+        self._previous_handler: Optional[object] = "__uninstalled__"
+
+    def install(self):
+        """Install this handler (override the current QtMessageHandler)."""
+        self._previous_handler = qInstallMessageHandler(self)
+
+    def uninstall(self):
+        """Uninstall this handler, restoring the previous handler."""
+        if self._previous_handler != "__uninstalled__":
+            qInstallMessageHandler(self._previous_handler)
+
+    def __repr__(self):
+        n = type(self).__name__
+        return f"<{n} object at {hex(id(self))} with {len(self.records)} records>"
+
+    def __enter__(self):
+        """Enter a context with this handler installed"""
+        self.install()
+        return self
+
+    def __exit__(self, *args):
+        self.uninstall()
+
+    def __call__(self, msgtype: QtMsgType, context: QMessageLogContext, message: str):
+        level = self._qt2loggertype[msgtype]
+
+        # PyQt seems to throw an error if these are simply empty
+        ctx = dict.fromkeys(["category", "file", "function", "line"])
+        with suppress(UnicodeDecodeError):
+            ctx["category"] = context.category
+        with suppress(UnicodeDecodeError):
+            ctx["file"] = context.file
+        with suppress(UnicodeDecodeError):
+            ctx["function"] = context.function
+        with suppress(UnicodeDecodeError):
+            ctx["line"] = context.line
+
+        self.records.append(Record(level, message, ctx))
+        if self._logger is not None:
+            self._logger.log(level, message, extra=ctx)

src/superqt/utils/_misc.py

@@ -0,0 +1,15 @@
+from contextlib import contextmanager
+from typing import TYPE_CHECKING, Iterator
+
+if TYPE_CHECKING:
+    from qtpy.QtCore import QObject
+
+
+@contextmanager
+def signals_blocked(obj: "QObject") -> Iterator[None]:
+    """Context manager to temporarily block signals emitted by QObject: `obj`."""
+    previous = obj.blockSignals(True)
+    try:
+        yield
+    finally:
+        obj.blockSignals(previous)

src/superqt/utils/_qthreading.py

@@ -0,0 +1,903 @@
+from __future__ import annotations
+
+import inspect
+import time
+import warnings
+from functools import partial, wraps
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    Callable,
+    Dict,
+    Generator,
+    Generic,
+    Optional,
+    Sequence,
+    Set,
+    Type,
+    TypeVar,
+    Union,
+    overload,
+)
+
+from qtpy.QtCore import QObject, QRunnable, QThread, QThreadPool, QTimer, Signal
+from typing_extensions import Literal, ParamSpec
+
+if TYPE_CHECKING:
+
+    _T = TypeVar("_T")
+
+    class SigInst(Generic[_T]):
+        @staticmethod
+        def connect(slot: Callable[[_T], Any], type: Optional[type] = ...) -> None:
+            ...
+
+        @staticmethod
+        def disconnect(slot: Callable[[_T], Any] = ...) -> None:
+            ...
+
+        @staticmethod
+        def emit(*args: _T) -> None:
+            ...
+
+
+_Y = TypeVar("_Y")
+_S = TypeVar("_S")
+_R = TypeVar("_R")
+_P = ParamSpec("_P")
+
+
+def as_generator_function(
+    func: Callable[_P, _R]
+) -> Callable[_P, Generator[None, None, _R]]:
+    """Turns a regular function (single return) into a generator function."""
+
+    @wraps(func)
+    def genwrapper(*args, **kwargs) -> Generator[None, None, _R]:
+        yield
+        return func(*args, **kwargs)
+
+    return genwrapper
+
+
+class WorkerBaseSignals(QObject):
+
+    started = Signal()  # emitted when the work is started
+    finished = Signal()  # emitted when the work is finished
+    _finished = Signal(object)  # emitted when the work is finished ro delete
+    returned = Signal(object)  # emitted with return value
+    errored = Signal(object)  # emitted with error object on Exception
+    warned = Signal(tuple)  # emitted with showwarning args on warning
+
+
+class WorkerBase(QRunnable, Generic[_R]):
+    """Base class for creating a Worker that can run in another thread.
+
+    Parameters
+    ----------
+    SignalsClass : type, optional
+        A QObject subclass that contains signals, by default WorkerBaseSignals
+
+    Attributes
+    ----------
+    signals: WorkerBaseSignals
+        signal emitter object. To allow identify which worker thread emitted signal.
+    """
+
+    #: A set of Workers.  Add to set using :meth:`WorkerBase.start`
+    _worker_set: Set[WorkerBase] = set()
+    returned: SigInst[_R]
+    errored: SigInst[Exception]
+    warned: SigInst[tuple]
+    started: SigInst[None]
+    finished: SigInst[None]
+
+    def __init__(
+        self,
+        func: Optional[Callable[_P, _R]] = None,
+        SignalsClass: Type[WorkerBaseSignals] = WorkerBaseSignals,
+    ) -> None:
+        super().__init__()
+        self._abort_requested = False
+        self._running = False
+        self.signals = SignalsClass()
+
+    def __getattr__(self, name: str) -> SigInst:
+        """Pass through attr requests to signals to simplify connection API.
+
+        The goal is to enable ``worker.yielded.connect`` instead of
+        ``worker.signals.yielded.connect``. Because multiple inheritance of Qt
+        classes is not well supported in PyQt, we have to use composition here
+        (signals are provided by QObjects, and QRunnable is not a QObject). So
+        this passthrough allows us to connect to signals on the ``_signals``
+        object.
+        """
+        # the Signal object is actually a class attribute
+        attr = getattr(self.signals.__class__, name, None)
+        if isinstance(attr, Signal):
+            # but what we need to connect to is the instantiated signal
+            # (which is of type `SignalInstance` in PySide and
+            # `pyqtBoundSignal` in PyQt)
+            return getattr(self.signals, name)
+        raise AttributeError(
+            f"{self.__class__.__name__!r} object has no attribute {name!r}"
+        )
+
+    def quit(self) -> None:
+        """Send a request to abort the worker.
+
+        .. note::
+
+            It is entirely up to subclasses to honor this method by checking
+            ``self.abort_requested`` periodically in their ``worker.work``
+            method, and exiting if ``True``.
+        """
+        self._abort_requested = True
+
+    @property
+    def abort_requested(self) -> bool:
+        """Whether the worker has been requested to stop."""
+        return self._abort_requested
+
+    @property
+    def is_running(self) -> bool:
+        """Whether the worker has been started"""
+        return self._running
+
+    def run(self) -> None:
+        """Start the worker.
+
+        The end-user should never need to call this function.
+        But it cannot be made private or renamed, since it is called by Qt.
+
+        The order of method calls when starting a worker is:
+
+        .. code-block:: none
+
+           calls QThreadPool.globalInstance().start(worker)
+           |               triggered by the QThreadPool.start() method
+           |               |             called by worker.run
+           |               |             |
+           V               V             V
+           worker.start -> worker.run -> worker.work
+
+        **This** is the function that actually gets called when calling
+        :func:`QThreadPool.start(worker)`.  It simply wraps the :meth:`work`
+        method, and emits a few signals.  Subclasses should NOT override this
+        method (except with good reason), and instead should implement
+        :meth:`work`.
+        """
+        self.started.emit()
+        self._running = True
+        try:
+            with warnings.catch_warnings():
+                warnings.filterwarnings("always")
+                warnings.showwarning = lambda *w: self.warned.emit(w)
+                result = self.work()
+            if isinstance(result, Exception):
+                if isinstance(result, RuntimeError):
+                    # The Worker object has likely been deleted.
+                    # A deleted wrapped C/C++ object may result in a runtime
+                    # error that will cause segfault if we try to do much other
+                    # than simply notify the user.
+                    warnings.warn(
+                        f"RuntimeError in aborted thread: {result}",
+                        RuntimeWarning,
+                    )
+                    return
+                else:
+                    raise result
+            if not self.abort_requested:
+                self.returned.emit(result)
+        except Exception as exc:
+            self.errored.emit(exc)
+        self._running = False
+        self.finished.emit()
+        self._finished.emit(self)
+
+    def work(self) -> Union[Exception, _R]:
+        """Main method to execute the worker.
+
+        The end-user should never need to call this function.
+        But subclasses must implement this method (See
+        :meth:`GeneratorFunction.work` for an example implementation).
+        Minimally, it should check ``self.abort_requested`` periodically and
+        exit if True.
+
+        Examples
+        --------
+        .. code-block:: python
+
+            class MyWorker(WorkerBase):
+
+                def work(self):
+                    i = 0
+                    while True:
+                        if self.abort_requested:
+                            self.aborted.emit()
+                            break
+                        i += 1
+                        if i > max_iters:
+                            break
+                        time.sleep(0.5)
+        """
+        raise NotImplementedError(
+            f'"{self.__class__.__name__}" failed to define work() method'
+        )
+
+    def start(self) -> None:
+        """Start this worker in a thread and add it to the global threadpool.
+
+        The order of method calls when starting a worker is:
+
+        .. code-block:: none
+
+           calls QThreadPool.globalInstance().start(worker)
+           |               triggered by the QThreadPool.start() method
+           |               |             called by worker.run
+           |               |             |
+           V               V             V
+           worker.start -> worker.run -> worker.work
+        """
+        if self in self._worker_set:
+            raise RuntimeError("This worker is already started!")
+
+        # This will raise a RunTimeError if the worker is already deleted
+        repr(self)
+
+        self._worker_set.add(self)
+        self._finished.connect(self._set_discard)
+        if QThread.currentThread().loopLevel():
+            # if we're in a thread with an eventloop, queue the worker to start
+            start_ = partial(QThreadPool.globalInstance().start, self)
+            QTimer.singleShot(1, start_)
+        else:
+            # otherwise start it immediately
+            QThreadPool.globalInstance().start(self)
+
+    @classmethod
+    def _set_discard(cls, obj: WorkerBase) -> None:
+        cls._worker_set.discard(obj)
+
+    @classmethod
+    def await_workers(cls, msecs: int = None) -> None:
+        """Ask all workers to quit, and wait up to `msec` for quit.
+
+        Attempts to clean up all running workers by calling ``worker.quit()``
+        method.  Any workers in the ``WorkerBase._worker_set`` set will have this
+        method.
+
+        By default, this function will block indefinitely, until worker threads
+        finish.  If a timeout is provided, a ``RuntimeError`` will be raised if
+        the workers do not gracefully exit in the time requests, but the threads
+        will NOT be killed.  It is (currently) left to the user to use their OS
+        to force-quit rogue threads.
+
+        .. important::
+
+            If the user does not put any yields in their function, and the function
+            is super long, it will just hang... For instance, there's no graceful
+            way to kill this thread in python:
+
+            .. code-block:: python
+
+                @thread_worker
+                def ZZZzzz():
+                    time.sleep(10000000)
+
+            This is why it's always advisable to use a generator that periodically
+            yields for long-running computations in another thread.
+
+            See `this stack-overflow post
+            <https://stackoverflow.com/questions/323972/is-there-any-way-to-kill-a-thread>`_
+            for a good discussion on the difficulty of killing a rogue python thread:
+
+        Parameters
+        ----------
+        msecs : int, optional
+            Waits up to msecs milliseconds for all threads to exit and removes all
+            threads from the thread pool. If msecs is `None` (the default), the
+            timeout is ignored (waits for the last thread to exit).
+
+        Raises
+        ------
+        RuntimeError
+            If a timeout is provided and workers do not quit successfully within
+            the time allotted.
+        """
+        for worker in cls._worker_set:
+            worker.quit()
+
+        msecs = msecs if msecs is not None else -1
+        if not QThreadPool.globalInstance().waitForDone(msecs):
+            raise RuntimeError(
+                f"Workers did not quit gracefully in the time allotted ({msecs} ms)"
+            )
+
+
+class FunctionWorker(WorkerBase[_R]):
+    """QRunnable with signals that wraps a simple long-running function.
+
+    .. note::
+
+        ``FunctionWorker`` does not provide a way to stop a very long-running
+        function (e.g. ``time.sleep(10000)``).  So whenever possible, it is
+        better to implement your long running function as a generator that
+        yields periodically, and use the :class:`GeneratorWorker` instead.
+
+    Parameters
+    ----------
+    func : Callable
+        A function to call in another thread
+    *args
+        will be passed to the function
+    **kwargs
+        will be passed to the function
+
+    Raises
+    ------
+    TypeError
+        If ``func`` is a generator function and not a regular function.
+    """
+
+    def __init__(self, func: Callable[_P, _R], *args, **kwargs):
+        if inspect.isgeneratorfunction(func):
+            raise TypeError(
+                f"Generator function {func} cannot be used with FunctionWorker, "
+                "use GeneratorWorker instead",
+            )
+        super().__init__()
+
+        self._func = func
+        self._args = args
+        self._kwargs = kwargs
+
+    def work(self) -> _R:
+        return self._func(*self._args, **self._kwargs)
+
+
+class GeneratorWorkerSignals(WorkerBaseSignals):
+
+    yielded = Signal(object)  # emitted with yielded values (if generator used)
+    paused = Signal()  # emitted when a running job has successfully paused
+    resumed = Signal()  # emitted when a paused job has successfully resumed
+    aborted = Signal()  # emitted when a running job is successfully aborted
+
+
+class GeneratorWorker(WorkerBase, Generic[_Y, _S, _R]):
+    """QRunnable with signals that wraps a long-running generator.
+
+    Provides a convenient way to run a generator function in another thread,
+    while allowing 2-way communication between threads, using plain-python
+    generator syntax in the original function.
+
+    Parameters
+    ----------
+    func : callable
+        The function being run in another thread.  May be a generator function.
+    SignalsClass : type, optional
+        A QObject subclass that contains signals, by default
+        GeneratorWorkerSignals
+    *args
+        Will be passed to func on instantiation
+    **kwargs
+        Will be passed to func on instantiation
+    """
+
+    yielded: SigInst[_Y]
+    paused: SigInst[None]
+    resumed: SigInst[None]
+    aborted: SigInst[None]
+
+    def __init__(
+        self,
+        func: Callable[_P, Generator[_Y, Optional[_S], _R]],
+        *args,
+        SignalsClass: Type[WorkerBaseSignals] = GeneratorWorkerSignals,
+        **kwargs,
+    ):
+        if not inspect.isgeneratorfunction(func):
+            raise TypeError(
+                f"Regular function {func} cannot be used with GeneratorWorker, "
+                "use FunctionWorker instead",
+            )
+        super().__init__(SignalsClass=SignalsClass)
+
+        self._gen = func(*args, **kwargs)
+        self._incoming_value: Optional[_S] = None
+        self._pause_requested = False
+        self._resume_requested = False
+        self._paused = False
+
+        # polling interval: ONLY relevant if the user paused a running worker
+        self._pause_interval = 0.01
+        self.pbar = None
+
+    def work(self) -> Union[Optional[_R], Exception]:
+        """Core event loop that calls the original function.
+
+        Enters a continual loop, yielding and returning from the original
+        function.  Checks for various events (quit, pause, resume, etc...).
+        (To clarify: we are creating a rudimentary event loop here because
+        there IS NO Qt event loop running in the other thread to hook into)
+        """
+        while True:
+            if self.abort_requested:
+                self.aborted.emit()
+                break
+            if self._paused:
+                if self._resume_requested:
+                    self._paused = False
+                    self._resume_requested = False
+                    self.resumed.emit()
+                else:
+                    time.sleep(self._pause_interval)
+                    continue
+            elif self._pause_requested:
+                self._paused = True
+                self._pause_requested = False
+                self.paused.emit()
+                continue
+            try:
+                input = self._next_value()
+                output = self._gen.send(input)
+                self.yielded.emit(output)
+            except StopIteration as exc:
+                return exc.value
+            except RuntimeError as exc:
+                # The worker has probably been deleted.  warning will be
+                # emitted in ``WorkerBase.run``
+                return exc
+        return None
+
+    def send(self, value: _S):
+        """Send a value into the function (if a generator was used)."""
+        self._incoming_value = value
+
+    def _next_value(self) -> Optional[_S]:
+        out = None
+        if self._incoming_value is not None:
+            out = self._incoming_value
+            self._incoming_value = None
+        return out
+
+    @property
+    def is_paused(self) -> bool:
+        """Whether the worker is currently paused."""
+        return self._paused
+
+    def toggle_pause(self) -> None:
+        """Request to pause the worker if playing or resume if paused."""
+        if self.is_paused:
+            self._resume_requested = True
+        else:
+            self._pause_requested = True
+
+    def pause(self) -> None:
+        """Request to pause the worker."""
+        if not self.is_paused:
+            self._pause_requested = True
+
+    def resume(self) -> None:
+        """Send a request to resume the worker."""
+        if self.is_paused:
+            self._resume_requested = True
+
+
+#############################################################################
+
+# convenience functions for creating Worker instances
+
+
+@overload
+def create_worker(
+    func: Callable[_P, Generator[_Y, _S, _R]],
+    *args,
+    _start_thread: Optional[bool] = None,
+    _connect: Optional[Dict[str, Union[Callable, Sequence[Callable]]]] = None,
+    _worker_class: Union[Type[GeneratorWorker], Type[FunctionWorker], None] = None,
+    _ignore_errors: bool = False,
+    **kwargs,
+) -> GeneratorWorker[_Y, _S, _R]:
+    ...
+
+
+@overload
+def create_worker(
+    func: Callable[_P, _R],
+    *args,
+    _start_thread: Optional[bool] = None,
+    _connect: Optional[Dict[str, Union[Callable, Sequence[Callable]]]] = None,
+    _worker_class: Union[Type[GeneratorWorker], Type[FunctionWorker], None] = None,
+    _ignore_errors: bool = False,
+    **kwargs,
+) -> FunctionWorker[_R]:
+    ...
+
+
+def create_worker(
+    func: Callable,
+    *args,
+    _start_thread: Optional[bool] = None,
+    _connect: Optional[Dict[str, Union[Callable, Sequence[Callable]]]] = None,
+    _worker_class: Union[Type[GeneratorWorker], Type[FunctionWorker], None] = None,
+    _ignore_errors: bool = False,
+    **kwargs,
+) -> Union[FunctionWorker, GeneratorWorker]:
+    """Convenience function to start a function in another thread.
+
+    By default, uses :class:`Worker`, but a custom ``WorkerBase`` subclass may
+    be provided.  If so, it must be a subclass of :class:`Worker`, which
+    defines a standard set of signals and a run method.
+
+    Parameters
+    ----------
+    func : Callable
+        The function to call in another thread.
+    _start_thread : bool, optional
+        Whether to immediaetly start the thread.  If False, the returned worker
+        must be manually started with ``worker.start()``. by default it will be
+        ``False`` if the ``_connect`` argument is ``None``, otherwise ``True``.
+    _connect : Dict[str, Union[Callable, Sequence]], optional
+        A mapping of ``"signal_name"`` -> ``callable`` or list of ``callable``:
+        callback functions to connect to the various signals offered by the
+        worker class. by default None
+    _worker_class : type of GeneratorWorker or FunctionWorker, optional
+        The :class`WorkerBase` to instantiate, by default
+        :class:`FunctionWorker` will be used if ``func`` is a regular function,
+        and :class:`GeneratorWorker` will be used if it is a generator.
+    _ignore_errors : bool, optional
+        If ``False`` (the default), errors raised in the other thread will be
+        reraised in the main thread (makes debugging significantly easier).
+    *args
+        will be passed to ``func``
+    **kwargs
+        will be passed to ``func``
+
+    Returns
+    -------
+    worker : WorkerBase
+        An instantiated worker.  If ``_start_thread`` was ``False``, the worker
+        will have a `.start()` method that can be used to start the thread.
+
+    Raises
+    ------
+    TypeError
+        If a worker_class is provided that is not a subclass of WorkerBase.
+    TypeError
+        If _connect is provided and is not a dict of ``{str: callable}``
+
+    Examples
+    --------
+    .. code-block:: python
+
+        def long_function(duration):
+            import time
+            time.sleep(duration)
+
+        worker = create_worker(long_function, 10)
+
+    """
+    worker: Union[FunctionWorker, GeneratorWorker]
+
+    if not _worker_class:
+        if inspect.isgeneratorfunction(func):
+            _worker_class = GeneratorWorker
+        else:
+            _worker_class = FunctionWorker
+
+    if not inspect.isclass(_worker_class) and issubclass(_worker_class, WorkerBase):
+        raise TypeError(f"Worker {_worker_class} must be a subclass of WorkerBase")
+
+    worker = _worker_class(func, *args, **kwargs)
+
+    if _connect is not None:
+        if not isinstance(_connect, dict):
+            raise TypeError("The '_connect' argument must be a dict")
+
+        if _start_thread is None:
+            _start_thread = True
+
+        for key, val in _connect.items():
+            _val = val if isinstance(val, (tuple, list)) else [val]
+            for v in _val:
+                if not callable(v):
+                    raise TypeError(
+                        f"_connect[{key!r}] must be a function or sequence of functions"
+                    )
+                getattr(worker, key).connect(v)
+
+    # if the user has not provided a default connection for the "errored"
+    # signal... and they have not explicitly set ``ignore_errors=True``
+    # Then rereaise any errors from the thread.
+    if not _ignore_errors and not (_connect or {}).get("errored", False):
+
+        def reraise(e):
+            raise e
+
+        worker.errored.connect(reraise)
+
+    if _start_thread:
+        worker.start()
+    return worker
+
+
+@overload
+def thread_worker(
+    function: Callable[_P, Generator[_Y, _S, _R]],
+    start_thread: Optional[bool] = None,
+    connect: Optional[Dict[str, Union[Callable, Sequence[Callable]]]] = None,
+    worker_class: Optional[Type[WorkerBase]] = None,
+    ignore_errors: bool = False,
+) -> Callable[_P, GeneratorWorker[_Y, _S, _R]]:
+    ...
+
+
+@overload
+def thread_worker(
+    function: Callable[_P, _R],
+    start_thread: Optional[bool] = None,
+    connect: Optional[Dict[str, Union[Callable, Sequence[Callable]]]] = None,
+    worker_class: Optional[Type[WorkerBase]] = None,
+    ignore_errors: bool = False,
+) -> Callable[_P, FunctionWorker[_R]]:
+    ...
+
+
+@overload
+def thread_worker(
+    function: Literal[None] = None,
+    start_thread: Optional[bool] = None,
+    connect: Optional[Dict[str, Union[Callable, Sequence[Callable]]]] = None,
+    worker_class: Optional[Type[WorkerBase]] = None,
+    ignore_errors: bool = False,
+) -> Callable[[Callable], Callable[_P, Union[FunctionWorker, GeneratorWorker]]]:
+    ...
+
+
+def thread_worker(
+    function: Optional[Callable] = None,
+    start_thread: Optional[bool] = None,
+    connect: Optional[Dict[str, Union[Callable, Sequence[Callable]]]] = None,
+    worker_class: Optional[Type[WorkerBase]] = None,
+    ignore_errors: bool = False,
+):
+    """Decorator that runs a function in a separate thread when called.
+
+    When called, the decorated function returns a :class:`WorkerBase`.  See
+    :func:`create_worker` for additional keyword arguments that can be used
+    when calling the function.
+
+    The returned worker will have these signals:
+
+        - *started*: emitted when the work is started
+        - *finished*: emitted when the work is finished
+        - *returned*: emitted with return value
+        - *errored*: emitted with error object on Exception
+
+    It will also have a ``worker.start()`` method that can be used to start
+    execution of the function in another thread. (useful if you need to connect
+    callbacks to signals prior to execution)
+
+    If the decorated function is a generator, the returned worker will also
+    provide these signals:
+
+        - *yielded*: emitted with yielded values
+        - *paused*: emitted when a running job has successfully paused
+        - *resumed*: emitted when a paused job has successfully resumed
+        - *aborted*: emitted when a running job is successfully aborted
+
+    And these methods:
+
+        - *quit*: ask the thread to quit
+        - *toggle_paused*: toggle the running state of the thread.
+        - *send*: send a value into the generator.  (This requires that your
+          decorator function uses the ``value = yield`` syntax)
+
+    Parameters
+    ----------
+    function : callable
+        Function to call in another thread.  For communication between threads
+        may be a generator function.
+    start_thread : bool, optional
+        Whether to immediaetly start the thread.  If False, the returned worker
+        must be manually started with ``worker.start()``. by default it will be
+        ``False`` if the ``_connect`` argument is ``None``, otherwise ``True``.
+    connect : Dict[str, Union[Callable, Sequence]], optional
+        A mapping of ``"signal_name"`` -> ``callable`` or list of ``callable``:
+        callback functions to connect to the various signals offered by the
+        worker class. by default None
+    worker_class : Type[WorkerBase], optional
+        The :class`WorkerBase` to instantiate, by default
+        :class:`FunctionWorker` will be used if ``func`` is a regular function,
+        and :class:`GeneratorWorker` will be used if it is a generator.
+    ignore_errors : bool, optional
+        If ``False`` (the default), errors raised in the other thread will be
+        reraised in the main thread (makes debugging significantly easier).
+
+    Returns
+    -------
+    callable
+        function that creates a worker, puts it in a new thread and returns
+        the worker instance.
+
+    Examples
+    --------
+    .. code-block:: python
+
+        @thread_worker
+        def long_function(start, end):
+            # do work, periodically yielding
+            i = start
+            while i <= end:
+                time.sleep(0.1)
+                yield i
+
+            # do teardown
+            return 'anything'
+
+        # call the function to start running in another thread.
+        worker = long_function()
+        # connect signals here if desired... or they may be added using the
+        # `connect` argument in the `@thread_worker` decorator... in which
+        # case the worker will start immediately when long_function() is called
+        worker.start()
+    """
+
+    def _inner(func):
+        @wraps(func)
+        def worker_function(*args, **kwargs):
+            # decorator kwargs can be overridden at call time by using the
+            # underscore-prefixed version of the kwarg.
+            kwargs["_start_thread"] = kwargs.get("_start_thread", start_thread)
+            kwargs["_connect"] = kwargs.get("_connect", connect)
+            kwargs["_worker_class"] = kwargs.get("_worker_class", worker_class)
+            kwargs["_ignore_errors"] = kwargs.get("_ignore_errors", ignore_errors)
+            return create_worker(
+                func,
+                *args,
+                **kwargs,
+            )
+
+        return worker_function
+
+    return _inner if function is None else _inner(function)
+
+
+############################################################################
+
+# This is a variant on the above pattern, it uses QThread instead of Qrunnable
+# see https://doc.qt.io/qt-5/threads-technologies.html#comparison-of-solutions
+# (it appears from that table that QRunnable cannot emit or receive signals,
+# but we circumvent that here with our WorkerBase class that also inherits from
+# QObject... providing signals/slots).
+#
+# A benefit of the QRunnable pattern is that Qt manages the threads for you,
+# in the QThreadPool.globalInstance() ... making it easier to reuse threads,
+# and reduce overhead.
+#
+# However, a disadvantage is that you have no access to (and therefore less
+# control over) the QThread itself.  See for example all of the methods
+# provided on the QThread object: https://doc.qt.io/qt-5/qthread.html
+
+if TYPE_CHECKING:
+
+    class WorkerProtocol(QObject):
+        finished: Signal
+
+        def work(self) -> None:
+            ...
+
+
+def new_worker_qthread(
+    Worker: Type[WorkerProtocol],
+    *args,
+    _start_thread: bool = False,
+    _connect: Dict[str, Callable] = None,
+    **kwargs,
+):
+    """This is a convenience function to start a worker in a Qthread.
+
+    In most cases, the @thread_worker decorator is sufficient and preferable.
+    But this allows the user to completely customize the Worker object.
+    However, they must then maintain control over the thread and clean up
+    appropriately.
+
+    It follows the pattern described here:
+    https://www.qt.io/blog/2010/06/17/youre-doing-it-wrong
+    and
+    https://doc.qt.io/qt-5/qthread.html#details
+
+    see also:
+    https://mayaposch.wordpress.com/2011/11/01/how-to-really-truly-use-qthreads-the-full-explanation/
+
+    A QThread object is not a thread! It should be thought of as a class to
+    *manage* a thread, not as the actual code or object that runs in that
+    thread.  The QThread object is created on the main thread and lives there.
+
+    Worker objects which derive from QObject are the things that actually do
+    the work. They can be moved to a QThread as is done here.
+
+    .. note:: Mostly ignorable detail
+
+        While the signals/slots syntax of the worker looks very similar to
+        standard "single-threaded" signals & slots, note that inter-thread
+        signals and slots (automatically) use an event-based QueuedConnection,
+        while intra-thread signals use a DirectConnection. See `Signals and
+        Slots Across Threads
+        <https://doc.qt.io/qt-5/threads-qobject.html#signals-and-slots-across-threads>`_
+
+    Parameters
+    ----------
+    Worker : QObject
+        QObject type that implements a `work()` method.  The Worker should also
+        emit a finished signal when the work is done.
+    _start_thread : bool
+        If True, thread will be started immediately, otherwise, thread must
+        be manually started with thread.start().
+    _connect : dict, optional
+        Optional dictionary of {signal: function} to connect to the new worker.
+        for instance:  _connect = {'incremented': myfunc} will result in:
+        worker.incremented.connect(myfunc)
+    *args
+        will be passed to the Worker class on instantiation.
+    **kwargs
+        will be passed to the Worker class on instantiation.
+
+    Returns
+    -------
+    worker : WorkerBase
+        The created worker.
+    thread : QThread
+        The thread on which the worker is running.
+
+    Examples
+    --------
+    Create some QObject that has a long-running work method:
+
+    .. code-block:: python
+
+        class Worker(QObject):
+
+            finished = Signal()
+            increment = Signal(int)
+
+            def __init__(self, argument):
+                super().__init__()
+                self.argument = argument
+
+            @Slot()
+            def work(self):
+                # some long running task...
+                import time
+                for i in range(10):
+                    time.sleep(1)
+                    self.increment.emit(i)
+                self.finished.emit()
+
+        worker, thread = new_worker_qthread(
+            Worker,
+            'argument',
+            _start_thread=True,
+            _connect={'increment': print},
+        )
+
+    """
+
+    if _connect and not isinstance(_connect, dict):
+        raise TypeError("_connect parameter must be a dict")
+
+    thread = QThread()
+    worker = Worker(*args, **kwargs)
+    worker.moveToThread(thread)
+    thread.started.connect(worker.work)
+    worker.finished.connect(thread.quit)
+    worker.finished.connect(worker.deleteLater)
+    thread.finished.connect(thread.deleteLater)
+
+    if _connect:
+        [getattr(worker, key).connect(val) for key, val in _connect.items()]
+
+    if _start_thread:
+        thread.start()  # sometimes need to connect stuff before starting
+    return worker, thread

src/superqt/utils/_throttler.py

@@ -0,0 +1,370 @@
+"""Adapted for python from the KDToolBox
+
+https://github.com/KDAB/KDToolBox/tree/master/qt/KDSignalThrottler
+
+MIT License
+
+Copyright (C) 2019-2022 Klarälvdalens Datakonsult AB, a KDAB Group company,
+info@kdab.com
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+"""
+import sys
+from concurrent.futures import Future
+from enum import IntFlag, auto
+from functools import wraps
+from typing import TYPE_CHECKING, Callable, Generic, Optional, TypeVar, Union, overload
+
+from qtpy.QtCore import QObject, Qt, QTimer, Signal
+from typing_extensions import Literal, ParamSpec
+
+if TYPE_CHECKING:
+    from qtpy.QtCore import SignalInstance
+
+
+class Kind(IntFlag):
+    Throttler = auto()
+    Debouncer = auto()
+
+
+class EmissionPolicy(IntFlag):
+    Trailing = auto()
+    Leading = auto()
+
+
+class GenericSignalThrottler(QObject):
+
+    triggered = Signal()
+    timeoutChanged = Signal(int)
+    timerTypeChanged = Signal(Qt.TimerType)
+
+    def __init__(
+        self,
+        kind: Kind,
+        emissionPolicy: EmissionPolicy,
+        parent: Optional[QObject] = None,
+    ) -> None:
+        super().__init__(parent)
+
+        self._kind = kind
+        self._emissionPolicy = emissionPolicy
+        self._hasPendingEmission = False
+
+        self._timer = QTimer()
+        self._timer.setSingleShot(True)
+        self._timer.setTimerType(Qt.TimerType.PreciseTimer)
+        self._timer.timeout.connect(self._maybeEmitTriggered)
+
+    def kind(self) -> Kind:
+        """Return the kind of throttler (throttler or debouncer)."""
+        return self._kind
+
+    def emissionPolicy(self) -> EmissionPolicy:
+        """Return the emission policy (trailing or leading)."""
+        return self._emissionPolicy
+
+    def timeout(self) -> int:
+        """Return current timeout in milliseconds."""
+        return self._timer.interval()  # type: ignore
+
+    def setTimeout(self, timeout: int) -> None:
+        """Set timeout in milliseconds"""
+        if self._timer.interval() != timeout:
+            self._timer.setInterval(timeout)
+            self.timeoutChanged.emit(timeout)
+
+    def timerType(self) -> Qt.TimerType:
+        """Return current Qt.TimerType."""
+        return self._timer.timerType()
+
+    def setTimerType(self, timerType: Qt.TimerType) -> None:
+        """Set current Qt.TimerType."""
+        if self._timer.timerType() != timerType:
+            self._timer.setTimerType(timerType)
+            self.timerTypeChanged.emit(timerType)
+
+    def throttle(self) -> None:
+        """Emit triggered if not running, then start timer."""
+        # public slot
+        self._hasPendingEmission = True
+        # Emit only if we haven't emitted already. We know if that's
+        # the case by checking if the timer is running.
+        if (
+            self._emissionPolicy is EmissionPolicy.Leading
+            and not self._timer.isActive()
+        ):
+            self._emitTriggered()
+
+        # The timer is started in all cases. If we got a signal, and we're Leading,
+        # and we did emit because of that, then we don't re-emit when the timer fires
+        # (unless we get ANOTHER signal).
+        if self._kind is Kind.Throttler:  # sourcery skip: merge-duplicate-blocks
+            if not self._timer.isActive():
+                self._timer.start()  # actual start, not restart
+        elif self._kind is Kind.Debouncer:
+            self._timer.start()  # restart
+
+        assert self._timer.isActive()
+
+    def cancel(self) -> None:
+        """ "Cancel and pending emissions."""
+        self._hasPendingEmission = False
+
+    def flush(self) -> None:
+        """ "Force emission of any pending emissions."""
+        self._maybeEmitTriggered()
+
+    def _emitTriggered(self) -> None:
+        self._hasPendingEmission = False
+        self.triggered.emit()
+        self._timer.start()
+
+    def _maybeEmitTriggered(self) -> None:
+        if self._hasPendingEmission:
+            self._emitTriggered()
+
+    Kind = Kind
+    EmissionPolicy = EmissionPolicy
+
+
+# ### Convenience classes ###
+
+
+class QSignalThrottler(GenericSignalThrottler):
+    """A Signal Throttler.
+
+    This object's `triggered` signal will emit at most once per timeout
+    (set with setTimeout()).
+    """
+
+    def __init__(
+        self,
+        policy: EmissionPolicy = EmissionPolicy.Leading,
+        parent: Optional[QObject] = None,
+    ) -> None:
+        super().__init__(Kind.Throttler, policy, parent)
+
+
+class QSignalDebouncer(GenericSignalThrottler):
+    """A Signal Debouncer.
+
+    This object's `triggered` signal will not be emitted until `self.timeout()`
+    milliseconds have elapsed since the last time `triggered` was emitted.
+    """
+
+    def __init__(
+        self,
+        policy: EmissionPolicy = EmissionPolicy.Trailing,
+        parent: Optional[QObject] = None,
+    ) -> None:
+        super().__init__(Kind.Debouncer, policy, parent)
+
+
+# below here part is unique to superqt (not from KD)
+
+P = ParamSpec("P")
+R = TypeVar("R")
+
+if TYPE_CHECKING:
+    from typing_extensions import Protocol
+
+    class ThrottledCallable(Generic[P, R], Protocol):
+        triggered: "SignalInstance"
+
+        def cancel(self) -> None:
+            ...
+
+        def flush(self) -> None:
+            ...
+
+        def set_timeout(self, timeout: int) -> None:
+            ...
+
+        if sys.version_info < (3, 9):
+
+            def __call__(self, *args: P.args, **kwargs: P.kwargs) -> Future:
+                ...
+
+        else:
+
+            def __call__(self, *args: P.args, **kwargs: P.kwargs) -> Future[R]:
+                ...
+
+
+@overload
+def qthrottled(
+    func: Callable[P, R],
+    timeout: int = 100,
+    leading: bool = True,
+    timer_type: Qt.TimerType = Qt.TimerType.PreciseTimer,
+) -> "ThrottledCallable[P, R]":
+    ...
+
+
+@overload
+def qthrottled(
+    func: Literal[None] = None,
+    timeout: int = 100,
+    leading: bool = True,
+    timer_type: Qt.TimerType = Qt.TimerType.PreciseTimer,
+) -> Callable[[Callable[P, R]], "ThrottledCallable[P, R]"]:
+    ...
+
+
+def qthrottled(
+    func: Optional[Callable[P, R]] = None,
+    timeout: int = 100,
+    leading: bool = True,
+    timer_type: Qt.TimerType = Qt.TimerType.PreciseTimer,
+) -> Union[
+    "ThrottledCallable[P, R]", Callable[[Callable[P, R]], "ThrottledCallable[P, R]"]
+]:
+    """Creates a throttled function that invokes func at most once per timeout.
+
+    The throttled function comes with a `cancel` method to cancel delayed func
+    invocations and a `flush` method to immediately invoke them. Options
+    to indicate whether func should be invoked on the leading and/or trailing
+    edge of the wait timeout. The func is invoked with the last arguments provided
+    to the throttled function. Subsequent calls to the throttled function return
+    the result of the last func invocation.
+
+    This decorator may be used with or without parameters.
+
+    Parameters
+    ----------
+    func : Callable
+        A function to throttle
+    timeout : int
+        Timeout in milliseconds to wait before allowing another call, by default 100
+    leading : bool
+        Whether to invoke the function on the leading edge of the wait timer,
+        by default True
+    timer_type : Qt.TimerType
+        The timer type. by default `Qt.TimerType.PreciseTimer`
+        One of:
+            - `Qt.PreciseTimer`: Precise timers try to keep millisecond accuracy
+            - `Qt.CoarseTimer`: Coarse timers try to keep accuracy within 5% of the
+              desired interval
+            - `Qt.VeryCoarseTimer`: Very coarse timers only keep full second accuracy
+    """
+    return _make_decorator(func, timeout, leading, timer_type, Kind.Throttler)
+
+
+@overload
+def qdebounced(
+    func: Callable[P, R],
+    timeout: int = 100,
+    leading: bool = False,
+    timer_type: Qt.TimerType = Qt.TimerType.PreciseTimer,
+) -> "ThrottledCallable[P, R]":
+    ...
+
+
+@overload
+def qdebounced(
+    func: Literal[None] = None,
+    timeout: int = 100,
+    leading: bool = False,
+    timer_type: Qt.TimerType = Qt.TimerType.PreciseTimer,
+) -> Callable[[Callable[P, R]], "ThrottledCallable[P, R]"]:
+    ...
+
+
+def qdebounced(
+    func: Optional[Callable[P, R]] = None,
+    timeout: int = 100,
+    leading: bool = False,
+    timer_type: Qt.TimerType = Qt.TimerType.PreciseTimer,
+) -> Union[
+    "ThrottledCallable[P, R]", Callable[[Callable[P, R]], "ThrottledCallable[P, R]"]
+]:
+    """Creates a debounced function that delays invoking `func`.
+
+    `func` will not be invoked until `timeout` ms have elapsed since the last time
+    the debounced function was invoked.
+
+    The debounced function comes with a `cancel` method to cancel delayed func
+    invocations and a `flush` method to immediately invoke them. Options
+    indicate whether func should be invoked on the leading and/or trailing edge
+    of the wait timeout. The func is invoked with the *last* arguments provided to
+    the debounced function. Subsequent calls to the debounced function return the
+    result of the last `func` invocation.
+
+    This decorator may be used with or without parameters.
+
+    Parameters
+    ----------
+    func : Callable
+        A function to throttle
+    timeout : int
+        Timeout in milliseconds to wait before allowing another call, by default 100
+    leading : bool
+        Whether to invoke the function on the leading edge of the wait timer,
+        by default False
+    timer_type : Qt.TimerType
+        The timer type. by default `Qt.TimerType.PreciseTimer`
+        One of:
+            - `Qt.PreciseTimer`: Precise timers try to keep millisecond accuracy
+            - `Qt.CoarseTimer`: Coarse timers try to keep accuracy within 5% of the
+              desired interval
+            - `Qt.VeryCoarseTimer`: Very coarse timers only keep full second accuracy
+    """
+    return _make_decorator(func, timeout, leading, timer_type, Kind.Debouncer)
+
+
+def _make_decorator(
+    func: Optional[Callable[P, R]],
+    timeout: int,
+    leading: bool,
+    timer_type: Qt.TimerType,
+    kind: Kind,
+) -> Union[
+    "ThrottledCallable[P, R]", Callable[[Callable[P, R]], "ThrottledCallable[P, R]"]
+]:
+    def deco(func: Callable[P, R]) -> "ThrottledCallable[P, R]":
+        policy = EmissionPolicy.Leading if leading else EmissionPolicy.Trailing
+        throttle = GenericSignalThrottler(kind, policy)
+        throttle.setTimerType(timer_type)
+        throttle.setTimeout(timeout)
+        last_f = None
+        future: Optional[Future] = None
+
+        @wraps(func)
+        def inner(*args: P.args, **kwargs: P.kwargs) -> Future:
+            nonlocal last_f
+            nonlocal future
+            if last_f is not None:
+                throttle.triggered.disconnect(last_f)
+            if future is not None and not future.done():
+                future.cancel()
+
+            future = Future()
+            last_f = lambda: future.set_result(func(*args, **kwargs))  # noqa
+            throttle.triggered.connect(last_f)
+            throttle.throttle()
+            return future
+
+        setattr(inner, "cancel", throttle.cancel)
+        setattr(inner, "flush", throttle.flush)
+        setattr(inner, "set_timeout", throttle.setTimeout)
+        setattr(inner, "triggered", throttle.triggered)
+        return inner  # type: ignore
+
+    return deco(func) if func is not None else deco

tests/test_collapsible.py

@@ -0,0 +1,87 @@
+"""A test module for testing collapsible"""
+
+from qtpy.QtCore import QEasingCurve
+from qtpy.QtWidgets import QPushButton
+
+from superqt import QCollapsible
+
+
+def test_checked_initialization(qtbot):
+    """Test simple collapsible"""
+    wdg1 = QCollapsible("Advanced analysis")
+    wdg1.expand(False)
+    assert wdg1.isExpanded()
+    assert wdg1._content.maximumHeight() > 0
+
+    wdg2 = QCollapsible("Advanced analysis")
+    wdg1.collapse(False)
+    assert not wdg2.isExpanded()
+    assert wdg2._content.maximumHeight() == 0
+
+
+def test_content_hide_show(qtbot):
+    """Test collapsible with content"""
+
+    # Create child component
+    collapsible = QCollapsible("Advanced analysis")
+    for i in range(10):
+        collapsible.addWidget(QPushButton(f"Content button {i + 1}"))
+
+    collapsible.collapse(False)
+    assert not collapsible.isExpanded()
+    assert collapsible._content.maximumHeight() == 0
+
+    collapsible.expand(False)
+    assert collapsible.isExpanded()
+    assert collapsible._content.maximumHeight() > 0
+
+
+def test_locking(qtbot):
+    """Test locking collapsible"""
+    wdg1 = QCollapsible()
+    assert wdg1.locked() is False
+    wdg1.setLocked(True)
+    assert wdg1.locked() is True
+    assert not wdg1.isExpanded()
+
+    wdg1._toggle_btn.setChecked(True)
+    assert not wdg1.isExpanded()
+
+    wdg1._toggle()
+    assert not wdg1.isExpanded()
+
+    wdg1.expand()
+    assert not wdg1.isExpanded()
+
+    wdg1._toggle_btn.setChecked(False)
+    assert not wdg1.isExpanded()
+
+    wdg1.setLocked(False)
+    wdg1.expand()
+    assert wdg1.isExpanded()
+    assert wdg1._toggle_btn.isChecked()
+
+
+def test_changing_animation_settings(qtbot):
+    """Quick test for changing animation settings"""
+    wdg = QCollapsible()
+    wdg.setDuration(600)
+    wdg.setEasingCurve(QEasingCurve.Type.InElastic)
+    assert wdg._animation.easingCurve() == QEasingCurve.Type.InElastic
+    assert wdg._animation.duration() == 600
+
+
+def test_changing_content(qtbot):
+    """Test changing the content"""
+    content = QPushButton()
+    wdg = QCollapsible()
+    wdg.setContent(content)
+    assert wdg._content == content
+
+
+def test_changing_text(qtbot):
+    """Test changing the content"""
+    wdg = QCollapsible()
+    wdg.setText("Hi new text")
+    assert wdg.text() == "Hi new text"
+    assert wdg._toggle_btn.text() == QCollapsible._COLLAPSED + "Hi new text"

tests/test_eliding_label.py

@@ -0,0 +1,71 @@
+import platform
+
+from qtpy.QtCore import QSize, Qt
+from qtpy.QtGui import QResizeEvent
+
+from superqt import QElidingLabel
+
+TEXT = (
+    "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do "
+    "eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad "
+    "minim ven iam, quis nostrud exercitation ullamco laborisnisi ut aliquip "
+    "ex ea commodo consequat. Duis aute irure dolor inreprehenderit in voluptate "
+    "velit esse cillum dolore eu fugiat nullapariatur."
+)
+ELLIPSIS = "…"
+
+
+def test_eliding_label(qtbot):
+    wdg = QElidingLabel(TEXT)
+    qtbot.addWidget(wdg)
+    assert wdg._elidedText().endswith(ELLIPSIS)
+    oldsize = wdg.size()
+    newsize = QSize(200, 20)
+    wdg.resize(newsize)
+    wdg.resizeEvent(QResizeEvent(oldsize, newsize))  # for test coverage
+    assert wdg.text() == TEXT
+
+
+def test_wrapped_eliding_label(qtbot):
+    wdg = QElidingLabel(TEXT)
+    qtbot.addWidget(wdg)
+    assert not wdg.wordWrap()
+    assert 630 < wdg.sizeHint().width() < 640
+    assert wdg._elidedText().endswith("…")
+    wdg.resize(QSize(200, 100))
+    assert wdg.text() == TEXT
+    assert wdg._elidedText().endswith("…")
+    wdg.setWordWrap(True)
+    assert wdg.wordWrap()
+    assert wdg.text() == TEXT
+    assert wdg._elidedText().endswith("…")
+    # just empirically from CI ... stupid
+    if platform.system() == "Linux":
+        assert wdg.sizeHint() in (QSize(200, 198), QSize(200, 154))
+    elif platform.system() == "Windows":
+        assert wdg.sizeHint() in (QSize(200, 160), QSize(200, 118))
+    elif platform.system() == "Darwin":
+        assert wdg.sizeHint() == QSize(200, 176)
+        # TODO: figure out how to test these on all platforms on CI
+        wdg.resize(wdg.sizeHint())
+        assert wdg._elidedText() == TEXT
+
+
+def test_shorter_eliding_label(qtbot):
+    short = "asd a ads sd flksdf dsf lksfj sd lsdjf sd lsdfk sdlkfj s"
+    wdg = QElidingLabel()
+    qtbot.addWidget(wdg)
+    wdg.setText(short)
+    assert not wdg._elidedText().endswith(ELLIPSIS)
+    wdg.resize(100, 20)
+    assert wdg._elidedText().endswith(ELLIPSIS)
+    wdg.setElideMode(Qt.TextElideMode.ElideLeft)
+    assert wdg._elidedText().startswith(ELLIPSIS)
+    assert wdg.elideMode() == Qt.TextElideMode.ElideLeft
+
+
+def test_wrap_text():
+    wrap = QElidingLabel.wrapText(TEXT, 200)
+    assert isinstance(wrap, list)
+    assert all(isinstance(x, str) for x in wrap)
+    assert 9 <= len(wrap) <= 13

tests/test_ensure_thread.py

@@ -0,0 +1,219 @@
+import inspect
+import os
+import time
+from concurrent.futures import Future, TimeoutError
+
+import pytest
+from qtpy.QtCore import QCoreApplication, QObject, QThread, Signal
+
+from superqt.utils import ensure_main_thread, ensure_object_thread
+
+skip_on_ci = pytest.mark.skipif(bool(os.getenv("CI")), reason="github hangs")
+
+
+class SampleObject(QObject):
+    assigment_done = Signal()
+
+    def __init__(self):
+        super().__init__()
+        self.main_thread_res = {}
+        self.object_thread_res = {}
+        self.main_thread_prop_val = None
+        self.sample_thread_prop_val = None
+
+    def long_wait(self):
+        time.sleep(1)
+
+    @property
+    def sample_main_thread_property(self):
+        return self.main_thread_prop_val
+
+    @sample_main_thread_property.setter  # type: ignore
+    @ensure_main_thread()
+    def sample_main_thread_property(self, value):
+        if QThread.currentThread() is not QCoreApplication.instance().thread():
+            raise RuntimeError("Wrong thread")
+        self.main_thread_prop_val = value
+        self.assigment_done.emit()
+
+    @property
+    def sample_object_thread_property(self):
+        return self.sample_thread_prop_val
+
+    @sample_object_thread_property.setter  # type: ignore
+    @ensure_object_thread()
+    def sample_object_thread_property(self, value):
+        if QThread.currentThread() is not self.thread():
+            raise RuntimeError("Wrong thread")
+        self.sample_thread_prop_val = value
+        self.assigment_done.emit()
+
+    @ensure_main_thread
+    def check_main_thread(self, a, *, b=1):
+        if QThread.currentThread() is not QCoreApplication.instance().thread():
+            raise RuntimeError("Wrong thread")
+        self.main_thread_res = {"a": a, "b": b}
+        self.assigment_done.emit()
+
+    @ensure_object_thread
+    def check_object_thread(self, a, *, b=1):
+        if QThread.currentThread() is not self.thread():
+            raise RuntimeError("Wrong thread")
+        self.object_thread_res = {"a": a, "b": b}
+        self.assigment_done.emit()
+
+    @ensure_object_thread(await_return=True)
+    def check_object_thread_return(self, a):
+        if QThread.currentThread() is not self.thread():
+            raise RuntimeError("Wrong thread")
+        return a * 7
+
+    @ensure_object_thread(await_return=True, timeout=200)
+    def check_object_thread_return_timeout(self, a):
+        if QThread.currentThread() is not self.thread():
+            raise RuntimeError("Wrong thread")
+        time.sleep(1)
+        return a * 7
+
+    @ensure_object_thread(await_return=False)
+    def check_object_thread_return_future(self, a: int):
+        """sample docstring"""
+        if QThread.currentThread() is not self.thread():
+            raise RuntimeError("Wrong thread")
+        time.sleep(0.4)
+        return a * 7
+
+    @ensure_main_thread(await_return=True)
+    def check_main_thread_return(self, a):
+        if QThread.currentThread() is not QCoreApplication.instance().thread():
+            raise RuntimeError("Wrong thread")
+        return a * 8
+
+
+class LocalThread(QThread):
+    def __init__(self, ob):
+        super().__init__()
+        self.ob = ob
+
+    def run(self):
+        assert QThread.currentThread() is not QCoreApplication.instance().thread()
+        self.ob.check_main_thread(5, b=8)
+        self.ob.main_thread_prop_val = "text2"
+
+
+class LocalThread2(QThread):
+    def __init__(self, ob):
+        super().__init__()
+        self.ob = ob
+        self.executed = False
+
+    def run(self):
+        assert QThread.currentThread() is not QCoreApplication.instance().thread()
+        assert self.ob.check_main_thread_return(5) == 40
+        self.executed = True
+
+
+def test_only_main_thread(qapp):
+    ob = SampleObject()
+    ob.check_main_thread(1, b=3)
+    assert ob.main_thread_res == {"a": 1, "b": 3}
+    ob.check_object_thread(2, b=4)
+    assert ob.object_thread_res == {"a": 2, "b": 4}
+    ob.sample_main_thread_property = 5
+    assert ob.sample_main_thread_property == 5
+    ob.sample_object_thread_property = 7
+    assert ob.sample_object_thread_property == 7
+
+
+def test_main_thread(qtbot):
+    ob = SampleObject()
+    t = LocalThread(ob)
+    with qtbot.waitSignal(t.finished):
+        t.start()
+
+    assert ob.main_thread_res == {"a": 5, "b": 8}
+    assert ob.sample_main_thread_property == "text2"
+
+
+def test_main_thread_return(qtbot):
+    ob = SampleObject()
+    t = LocalThread2(ob)
+    with qtbot.wait_signal(t.finished):
+        t.start()
+    assert t.executed
+
+
+def test_names(qapp):
+    ob = SampleObject()
+    assert ob.check_object_thread.__name__ == "check_object_thread"
+    assert ob.check_object_thread_return.__name__ == "check_object_thread_return"
+    assert (
+        ob.check_object_thread_return_timeout.__name__
+        == "check_object_thread_return_timeout"
+    )
+    assert (
+        ob.check_object_thread_return_future.__name__
+        == "check_object_thread_return_future"
+    )
+    assert ob.check_object_thread_return_future.__doc__ == "sample docstring"
+    signature = inspect.signature(ob.check_object_thread_return_future)
+    assert len(signature.parameters) == 1
+    assert list(signature.parameters.values())[0].name == "a"
+    assert list(signature.parameters.values())[0].annotation == int
+    assert ob.check_main_thread_return.__name__ == "check_main_thread_return"
+
+
+@skip_on_ci
+def test_object_thread_return(qtbot):
+    ob = SampleObject()
+    thread = QThread()
+    thread.start()
+    ob.moveToThread(thread)
+    assert ob.check_object_thread_return(2) == 14
+    assert ob.thread() is thread
+    with qtbot.waitSignal(thread.finished):
+        thread.quit()
+
+
+@skip_on_ci
+def test_object_thread_return_timeout(qtbot):
+    ob = SampleObject()
+    thread = QThread()
+    thread.start()
+    ob.moveToThread(thread)
+    with pytest.raises(TimeoutError):
+        ob.check_object_thread_return_timeout(2)
+    with qtbot.waitSignal(thread.finished):
+        thread.quit()
+
+
+@skip_on_ci
+def test_object_thread_return_future(qtbot):
+    ob = SampleObject()
+    thread = QThread()
+    thread.start()
+    ob.moveToThread(thread)
+    future = ob.check_object_thread_return_future(2)
+    assert isinstance(future, Future)
+    assert future.result() == 14
+    with qtbot.waitSignal(thread.finished):
+        thread.quit()
+
+
+@skip_on_ci
+def test_object_thread(qtbot):
+    ob = SampleObject()
+    thread = QThread()
+    thread.start()
+    ob.moveToThread(thread)
+    with qtbot.waitSignal(ob.assigment_done):
+        ob.check_object_thread(2, b=4)
+    assert ob.object_thread_res == {"a": 2, "b": 4}
+
+    with qtbot.waitSignal(ob.assigment_done):
+        ob.sample_object_thread_property = "text"
+
+    assert ob.sample_object_thread_property == "text"
+    assert ob.thread() is thread
+    with qtbot.waitSignal(thread.finished):
+        thread.quit()

tests/test_enum_comb_box.py

@@ -0,0 +1,129 @@
+from enum import Enum
+
+import pytest
+
+from superqt.combobox import QEnumComboBox
+from superqt.combobox._enum_combobox import NONE_STRING
+
+
+class Enum1(Enum):
+    a = 1
+    b = 2
+    c = 3
+
+
+class Enum2(Enum):
+    d = 1
+    e = 2
+    f = 3
+    g = 4
+
+
+class Enum3(Enum):
+    a = 1
+    b = 2
+    c = 3
+
+    def __str__(self):
+        return self.name + "1"
+
+
+class Enum4(Enum):
+    a_1 = 1
+    b_2 = 2
+    c_3 = 3
+
+
+def test_simple_create(qtbot):
+    enum = QEnumComboBox(enum_class=Enum1)
+    qtbot.addWidget(enum)
+    assert enum.count() == 3
+    assert [enum.itemText(i) for i in range(enum.count())] == ["a", "b", "c"]
+
+
+def test_simple_create2(qtbot):
+    enum = QEnumComboBox()
+    qtbot.addWidget(enum)
+    assert enum.count() == 0
+    enum.setEnumClass(Enum1)
+    assert enum.count() == 3
+    assert [enum.itemText(i) for i in range(enum.count())] == ["a", "b", "c"]
+
+
+def test_replace(qtbot):
+    enum = QEnumComboBox(enum_class=Enum1)
+    qtbot.addWidget(enum)
+    assert enum.count() == 3
+    assert enum.enumClass() == Enum1
+    assert isinstance(enum.currentEnum(), Enum1)
+    enum.setEnumClass(Enum2)
+    assert enum.enumClass() == Enum2
+    assert isinstance(enum.currentEnum(), Enum2)
+    assert enum.count() == 4
+    assert [enum.itemText(i) for i in range(enum.count())] == ["d", "e", "f", "g"]
+
+
+def test_str_replace(qtbot):
+    enum = QEnumComboBox(enum_class=Enum3)
+    qtbot.addWidget(enum)
+    assert enum.count() == 3
+    assert [enum.itemText(i) for i in range(enum.count())] == ["a1", "b1", "c1"]
+
+
+def test_underscore_replace(qtbot):
+    enum = QEnumComboBox(enum_class=Enum4)
+    qtbot.addWidget(enum)
+    assert enum.count() == 3
+    assert [enum.itemText(i) for i in range(enum.count())] == ["a 1", "b 2", "c 3"]
+
+
+def test_change_value(qtbot):
+    enum = QEnumComboBox(enum_class=Enum1)
+    qtbot.addWidget(enum)
+    assert enum.currentEnum() == Enum1.a
+    with qtbot.waitSignal(
+        enum.currentEnumChanged, check_params_cb=lambda x: isinstance(x, Enum)
+    ):
+        enum.setCurrentEnum(Enum1.c)
+    assert enum.currentEnum() == Enum1.c
+
+
+def test_no_enum(qtbot):
+    enum = QEnumComboBox()
+    assert enum.enumClass() is None
+    qtbot.addWidget(enum)
+    assert enum.currentEnum() is None
+
+
+def test_prohibited_methods(qtbot):
+    enum = QEnumComboBox(enum_class=Enum1)
+    qtbot.addWidget(enum)
+    with pytest.raises(RuntimeError):
+        enum.addItem("aaa")
+    with pytest.raises(RuntimeError):
+        enum.addItems(["aaa", "bbb"])
+    with pytest.raises(RuntimeError):
+        enum.insertItem(0, "aaa")
+    with pytest.raises(RuntimeError):
+        enum.insertItems(0, ["aaa", "bbb"])
+    assert enum.count() == 3
+
+
+def test_optional(qtbot):
+    enum = QEnumComboBox(enum_class=Enum1, allow_none=True)
+    qtbot.addWidget(enum)
+    assert [enum.itemText(i) for i in range(enum.count())] == [
+        NONE_STRING,
+        "a",
+        "b",
+        "c",
+    ]
+    assert enum.currentText() == NONE_STRING
+    assert enum.currentEnum() is None
+    enum.setCurrentEnum(Enum1.a)
+    assert enum.currentText() == "a"
+    assert enum.currentEnum() == Enum1.a
+    assert enum.enumClass() is Enum1
+    enum.setCurrentEnum(None)
+    assert enum.currentText() == NONE_STRING
+    assert enum.currentEnum() is None

tests/test_fonticon/test_fonticon.py

@@ -0,0 +1,135 @@
+from pathlib import Path
+
+import pytest
+from qtpy.QtGui import QIcon, QPixmap
+from qtpy.QtWidgets import QPushButton
+
+from superqt.fonticon import icon, pulse, setTextIcon, spin
+from superqt.fonticon._qfont_icon import QFontIconStore, _ensure_identifier
+
+TEST_PREFIX = "ico"
+TEST_CHARNAME = "smiley"
+TEST_CHAR = "\ue900"
+TEST_GLYPHKEY = f"{TEST_PREFIX}.{TEST_CHARNAME}"
+FONT_FILE = Path(__file__).parent / "icontest.ttf"
+
+
+@pytest.fixture
+def store(qapp):
+    store = QFontIconStore().instance()
+    yield store
+    store.clear()
+
+
+@pytest.fixture
+def full_store(store):
+    store.addFont(str(FONT_FILE), TEST_PREFIX, {TEST_CHARNAME: TEST_CHAR})
+    return store
+
+
+def test_no_font_key():
+    with pytest.raises(KeyError) as err:
+        icon(TEST_GLYPHKEY)
+        assert "Unrecognized font key: {TEST_PREFIX!r}." in str(err)
+
+
+def test_no_charmap(store):
+    store.addFont(str(FONT_FILE), TEST_PREFIX)
+    with pytest.raises(KeyError) as err:
+        icon(TEST_GLYPHKEY)
+        assert "No charmap registered for" in str(err)
+
+
+def test_font_icon_works(full_store):
+    icn = icon(TEST_GLYPHKEY)
+    assert isinstance(icn, QIcon)
+    assert isinstance(icn.pixmap(40, 40), QPixmap)
+
+    icn = icon(f"{TEST_PREFIX}.{TEST_CHAR}")  # also works with unicode key
+    assert isinstance(icn, QIcon)
+    assert isinstance(icn.pixmap(40, 40), QPixmap)
+
+    with pytest.raises(ValueError) as err:
+        icon(f"{TEST_PREFIX}.smelly")  # bad name
+        assert "Font 'test (Regular)' has no glyph with the key 'smelly'" in str(err)
+
+
+def test_on_button(full_store, qtbot):
+    btn = QPushButton(None)
+    qtbot.addWidget(btn)
+    btn.setIcon(icon(TEST_GLYPHKEY))
+
+
+def test_btn_text_icon(full_store, qtbot):
+    btn = QPushButton(None)
+    qtbot.addWidget(btn)
+    setTextIcon(btn, TEST_GLYPHKEY)
+    assert btn.text() == TEST_CHAR
+
+
+def test_animation(full_store, qtbot):
+    btn = QPushButton(None)
+    qtbot.addWidget(btn)
+    icn = icon(TEST_GLYPHKEY, animation=pulse(btn))
+    btn.setIcon(icn)
+    with qtbot.waitSignal(icn._engine._default_opts.animation.timer.timeout):
+        icn.pixmap(40, 40)
+        btn.update()
+
+
+def test_multistate(full_store, qtbot, qapp):
+    """complicated multistate icon"""
+    btn = QPushButton()
+    qtbot.addWidget(btn)
+    icn = icon(
+        TEST_GLYPHKEY,
+        color="blue",
+        states={
+            "active": {
+                "color": "red",
+                "scale_factor": 0.5,
+                "animation": pulse(btn),
+            },
+            "disabled": {
+                "color": "green",
+                "scale_factor": 0.8,
+                "animation": spin(btn),
+            },
+        },
+    )
+    btn.setIcon(icn)
+    btn.show()
+
+    btn.setEnabled(False)
+    active = icn._engine._opts[QIcon.State.Off][QIcon.Mode.Active].animation.timer
+    disabled = icn._engine._opts[QIcon.State.Off][QIcon.Mode.Disabled].animation.timer
+
+    with qtbot.waitSignal(active.timeout, timeout=1000):
+        btn.setEnabled(True)
+        # hack to get the signal emitted
+        icn.pixmap(100, 100, QIcon.Mode.Active, QIcon.State.Off)
+
+    assert active.isActive()
+    assert not disabled.isActive()
+    with qtbot.waitSignal(disabled.timeout):
+        btn.setEnabled(False)
+    assert disabled.isActive()
+
+    # smoke test, paint all the states
+    icn.pixmap(100, 100, QIcon.Mode.Active, QIcon.State.Off)
+    icn.pixmap(100, 100, QIcon.Mode.Disabled, QIcon.State.Off)
+    icn.pixmap(100, 100, QIcon.Mode.Selected, QIcon.State.Off)
+    icn.pixmap(100, 100, QIcon.Mode.Normal, QIcon.State.Off)
+    icn.pixmap(100, 100, QIcon.Mode.Active, QIcon.State.On)
+    icn.pixmap(100, 100, QIcon.Mode.Disabled, QIcon.State.On)
+    icn.pixmap(100, 100, QIcon.Mode.Selected, QIcon.State.On)
+    icn.pixmap(100, 100, QIcon.Mode.Normal, QIcon.State.On)
+
+
+def test_ensure_identifier():
+    assert _ensure_identifier("") == ""
+    assert _ensure_identifier("1a") == "_1a"
+    assert _ensure_identifier("from") == "from_"
+    assert _ensure_identifier("hello-world") == "hello_world"
+    assert _ensure_identifier("hello_world") == "hello_world"
+    assert _ensure_identifier("hello world") == "hello_world"

tests/test_fonticon/test_plugins.py

@@ -0,0 +1,54 @@
+import sys
+from pathlib import Path
+
+import pytest
+from qtpy.QtGui import QIcon, QPixmap
+
+from superqt.fonticon import _plugins, icon
+from superqt.fonticon._qfont_icon import QFontIconStore
+
+try:
+    from importlib.metadata import Distribution
+except ImportError:
+    from importlib_metadata import Distribution  # type: ignore
+
+
+class ICO:
+    __font_file__ = str(Path(__file__).parent / "icontest.ttf")
+    smiley = "ico.\ue900"
+
+
+@pytest.fixture
+def plugin_store(qapp, monkeypatch):
+    class MockEntryPoint:
+        name = "ico"
+        group = _plugins.FontIconManager.ENTRY_POINT
+        value = "fake_plugin.ICO"
+
+        def load(self):
+            return ICO
+
+    class MockFinder:
+        def find_distributions(self, *a):
+            class D(Distribution):
+                name = "mock"
+
+                @property
+                def entry_points(self):
+                    return [MockEntryPoint()]
+
+            return [D()]
+
+    store = QFontIconStore().instance()
+    with monkeypatch.context() as m:
+        m.setattr(sys, "meta_path", [MockFinder()])
+        yield store
+    store.clear()
+
+
+def test_plugin(plugin_store):
+    assert not _plugins.loaded()
+    icn = icon("ico.smiley")
+    assert _plugins.loaded() == {"ico": ["smiley"]}
+    assert isinstance(icn, QIcon)
+    assert isinstance(icn.pixmap(40, 40), QPixmap)

tests/test_large_int_spinbox.py

@@ -0,0 +1,74 @@
+from qtpy.QtCore import Qt
+
+from superqt.spinbox import QLargeIntSpinBox
+
+
+def test_large_spinbox(qtbot):
+    sb = QLargeIntSpinBox()
+    qtbot.addWidget(sb)
+
+    for e in range(2, 100, 2):
+        sb.setMaximum(10**e + 2)
+        with qtbot.waitSignal(sb.valueChanged) as sgnl:
+            sb.setValue(10**e)
+        assert sgnl.args == [10**e]
+        assert sb.value() == 10**e
+
+        sb.setMinimum(-(10**e) - 2)
+
+        with qtbot.waitSignal(sb.valueChanged) as sgnl:
+            sb.setValue(-(10**e))
+        assert sgnl.args == [-(10**e)]
+        assert sb.value() == -(10**e)
+
+
+def test_large_spinbox_type(qtbot):
+    sb = QLargeIntSpinBox()
+    qtbot.addWidget(sb)
+
+    assert isinstance(sb.value(), int)
+
+    sb.setValue(1.1)
+    assert isinstance(sb.value(), int)
+    assert sb.value() == 1
+
+    sb.setValue(1.9)
+    assert isinstance(sb.value(), int)
+    assert sb.value() == 1
+
+
+def test_large_spinbox_signals(qtbot):
+    sb = QLargeIntSpinBox()
+    qtbot.addWidget(sb)
+
+    with qtbot.waitSignal(sb.valueChanged) as sgnl:
+        sb.setValue(200)
+    assert sgnl.args == [200]
+
+    with qtbot.waitSignal(sb.textChanged) as sgnl:
+        sb.setValue(240)
+    assert sgnl.args == ["240"]
+
+
+def test_keyboard_tracking(qtbot):
+    sb = QLargeIntSpinBox()
+    qtbot.addWidget(sb)
+
+    assert sb.value() == 0
+    sb.setKeyboardTracking(False)
+    with qtbot.assertNotEmitted(sb.valueChanged):
+        sb.lineEdit().setText("20")
+    assert sb.lineEdit().text() == "20"
+    assert sb.value() == 0
+    assert sb._pending_emit is True
+
+    with qtbot.waitSignal(sb.valueChanged) as sgnl:
+        qtbot.keyPress(sb, Qt.Key.Key_Enter)
+    assert sgnl.args == [20]
+    assert sb._pending_emit is False
+
+    sb.setKeyboardTracking(True)
+    with qtbot.waitSignal(sb.valueChanged) as sgnl:
+        sb.lineEdit().setText("25")
+    assert sb._pending_emit is False
+    assert sgnl.args == [25]

tests/test_qmessage_handler.py

@@ -0,0 +1,36 @@
+import logging
+
+from qtpy import QtCore
+
+from superqt import QMessageHandler
+
+
+def test_message_handler():
+    with QMessageHandler() as mh:
+        QtCore.qDebug("debug")
+        QtCore.qWarning("warning")
+        QtCore.qCritical("critical")
+
+    assert len(mh.records) == 3
+    assert mh.records[0].level == logging.DEBUG
+    assert mh.records[1].level == logging.WARNING
+    assert mh.records[2].level == logging.CRITICAL
+
+    assert "3 records" in repr(mh)
+
+
+def test_message_handler_with_logger(caplog):
+    logger = logging.getLogger("test_logger")
+    caplog.set_level(logging.DEBUG, logger="test_logger")
+    with QMessageHandler(logger):
+        QtCore.qDebug("debug")
+        QtCore.qWarning("warning")
+        QtCore.qCritical("critical")
+
+    assert len(caplog.records) == 3
+    caplog.records[0].message == "debug"
+    caplog.records[0].levelno == logging.DEBUG
+    caplog.records[1].message == "warning"
+    caplog.records[1].levelno == logging.WARNING
+    caplog.records[2].message == "critical"
+    caplog.records[2].levelno == logging.CRITICAL

tests/test_searchable_combobox.py

@@ -0,0 +1,35 @@
+from superqt import QSearchableComboBox
+
+
+class TestSearchableComboBox:
+    def test_constructor(self, qtbot):
+        widget = QSearchableComboBox()
+        qtbot.addWidget(widget)
+
+    def test_add_items(self, qtbot):
+        widget = QSearchableComboBox()
+        qtbot.addWidget(widget)
+        widget.addItems(["foo", "bar"])
+        assert widget.completer_object.model().rowCount() == 2
+        widget.addItem("foobar")
+        assert widget.completer_object.model().rowCount() == 3
+        widget.insertItem(1, "baz")
+        assert widget.completer_object.model().rowCount() == 4
+        widget.insertItems(2, ["bazbar", "foobaz"])
+        assert widget.completer_object.model().rowCount() == 6
+        assert widget.itemText(0) == "foo"
+        assert widget.itemText(1) == "baz"
+        assert widget.itemText(2) == "bazbar"
+
+    def test_completion(self, qtbot):
+        widget = QSearchableComboBox()
+        qtbot.addWidget(widget)
+        widget.addItems(["foo", "bar", "foobar", "baz", "bazbar", "foobaz"])
+
+        widget.completer_object.setCompletionPrefix("fo")
+        assert widget.completer_object.completionCount() == 3
+        assert widget.completer_object.currentCompletion() == "foo"
+        widget.completer_object.setCurrentRow(1)
+        assert widget.completer_object.currentCompletion() == "foobar"
+        widget.completer_object.setCurrentRow(2)
+        assert widget.completer_object.currentCompletion() == "foobaz"

tests/test_searchable_list.py

@@ -0,0 +1,34 @@
+from superqt import QSearchableListWidget
+
+
+class TestSearchableListWidget:
+    def test_create(self, qtbot):
+        widget = QSearchableListWidget()
+        qtbot.addWidget(widget)
+        widget.addItem("aaa")
+        assert widget.count() == 1
+
+    def test_add_items(self, qtbot):
+        widget = QSearchableListWidget()
+        qtbot.addWidget(widget)
+        widget.addItems(["foo", "bar"])
+        assert widget.count() == 2
+        widget.insertItems(1, ["baz", "foobaz"])
+        widget.insertItem(2, "foobar")
+        assert widget.count() == 5
+        assert widget.item(0).text() == "foo"
+        assert widget.item(1).text() == "baz"
+        assert widget.item(2).text() == "foobar"
+
+    def test_completion(self, qtbot):
+        widget = QSearchableListWidget()
+        qtbot.addWidget(widget)
+        widget.show()
+        widget.addItems(["foo", "bar", "foobar", "baz", "bazbar", "foobaz"])
+        widget.filter_widget.setText("fo")
+        assert widget.count() == 6
+        for i in range(widget.count()):
+            item = widget.item(i)
+            assert item.isHidden() == ("fo" not in item.text())
+
+        widget.hide()

tests/test_sliders/_testutil.py

@@ -0,0 +1,85 @@
+from contextlib import suppress
+from platform import system
+
+import pytest
+from qtpy import QT_VERSION
+from qtpy.QtCore import QEvent, QPoint, QPointF, Qt
+from qtpy.QtGui import QHoverEvent, QMouseEvent, QWheelEvent
+
+QT_VERSION = tuple(int(x) for x in QT_VERSION.split("."))
+
+SYS_DARWIN = system() == "Darwin"
+
+skip_on_linux_qt6 = pytest.mark.skipif(
+    system() == "Linux" and QT_VERSION >= (6, 0),
+    reason="hover events not working on linux pyqt6",
+)
+
+
+def _mouse_event(pos=QPointF(), type_=QEvent.Type.MouseMove):
+    """Create a mouse event of `type_` at `pos`."""
+    return QMouseEvent(
+        type_,
+        QPointF(pos),
+        Qt.MouseButton.LeftButton,
+        Qt.MouseButton.LeftButton,
+        Qt.KeyboardModifier.NoModifier,
+    )
+
+
+def _wheel_event(arc):
+    """Create a wheel event with `arc`."""
+    with suppress(TypeError):
+        return QWheelEvent(
+            QPointF(),
+            QPointF(),
+            QPoint(arc, arc),
+            QPoint(arc, arc),
+            Qt.MouseButton.NoButton,
+            Qt.KeyboardModifier.NoModifier,
+            Qt.ScrollPhase.ScrollBegin,
+            False,
+            Qt.MouseEventSource.MouseEventSynthesizedByQt,
+        )
+    with suppress(TypeError):
+        return QWheelEvent(
+            QPointF(),
+            QPointF(),
+            QPoint(-arc, -arc),
+            QPoint(-arc, -arc),
+            1,
+            Qt.Orientation.Vertical,
+            Qt.MouseButton.NoButton,
+            Qt.KeyboardModifier.NoModifier,
+            Qt.ScrollPhase.ScrollBegin,
+            False,
+            Qt.MouseEventSource.MouseEventSynthesizedByQt,
+        )
+
+    return QWheelEvent(
+        QPointF(),
+        QPointF(),
+        QPoint(arc, arc),
+        QPoint(arc, arc),
+        1,
+        Qt.Orientation.Vertical,
+        Qt.MouseButton.NoButton,
+        Qt.KeyboardModifier.NoModifier,
+    )
+
+
+def _hover_event(_type, position, old_position, widget=None):
+    with suppress(TypeError):
+        return QHoverEvent(
+            _type,
+            position,
+            widget.mapToGlobal(position),
+            old_position,
+        )
+    return QHoverEvent(_type, position, old_position)
+
+
+def _linspace(start, stop, n):
+    h = (stop - start) / (n - 1)
+    for i in range(n):
+        yield start + h * i

tests/test_sliders/test_float.py

@@ -1,14 +1,14 @@
 import os
 
 import pytest
+from qtpy import API_NAME
 
-from qtrangeslider import (
+from superqt import (
     QDoubleRangeSlider,
     QDoubleSlider,
     QLabeledDoubleRangeSlider,
     QLabeledDoubleSlider,
 )
-from qtrangeslider.qtcompat import API_NAME
 
 range_types = {QDoubleRangeSlider, QLabeledDoubleRangeSlider}
 
@@ -62,15 +62,13 @@ def test_double_sliders(ds):
     ds.assert_val_eq((20, 40))
     assert ds.singleStep() == 1
 
-    ds.setDecimals(2)
     ds.assert_val_eq((20, 40))
     ds.assert_val_type()
 
-    ds.setValue((20.23435, 40.2342))
-    ds.assert_val_eq((20.23, 40.23))  # because of decimals
+    ds.setValue((20.23, 40.23))
+    ds.assert_val_eq((20.23, 40.23))
     ds.assert_val_type()
 
-    ds.setDecimals(4)
     assert ds.minimum() == 10
     assert ds.maximum() == 99
     assert ds.singleStep() == 1
@@ -78,16 +76,11 @@ def test_double_sliders(ds):
     ds.setValue((20.2343, 40.2342))
     ds.assert_val_eq((20.2343, 40.2342))
 
-    ds.setDecimals(6)
     ds.assert_val_eq((20.2343, 40.2342))
     assert ds.minimum() == 10
     assert ds.maximum() == 99
     assert ds.singleStep() == 1
 
-    with pytest.raises(OverflowError) as err:
-        ds.setDecimals(8)
-        assert "open a feature request" in str(err)
-
     ds.assert_val_eq((20.2343, 40.2342))
     assert ds.minimum() == 10
     assert ds.maximum() == 99
@@ -96,7 +89,6 @@ def test_double_sliders(ds):
 
 def test_double_sliders_small(ds):
     ds.setMaximum(1)
-    ds.setDecimals(8)
     ds.setValue((0.5, 0.9))
     assert ds.minimum() == 0
     assert ds.maximum() == 1
@@ -108,8 +100,6 @@ def test_double_sliders_small(ds):
 
 def test_double_sliders_big(ds):
     ds.setValue((20, 80))
-    ds.setDecimals(-6)
-    assert ds.decimals() == -6
     ds.setMaximum(5e14)
     assert ds.minimum() == 0
     assert ds.maximum() == 5e14

tests/test_sliders/test_generic_slider.py

@@ -0,0 +1,205 @@
+import math
+import platform
+
+import pytest
+from qtpy.QtCore import QEvent, QPoint, QPointF, Qt
+from qtpy.QtWidgets import QStyle, QStyleOptionSlider
+
+from superqt.sliders._generic_slider import _GenericSlider, _sliderValueFromPosition
+
+from ._testutil import (
+    _hover_event,
+    _linspace,
+    _mouse_event,
+    _wheel_event,
+    skip_on_linux_qt6,
+)
+
+
+@pytest.fixture(params=[Qt.Orientation.Horizontal, Qt.Orientation.Vertical])
+def gslider(qtbot, request):
+    slider = _GenericSlider(request.param)
+    qtbot.addWidget(slider)
+    assert slider.value() == 0
+    assert slider.minimum() == 0
+    assert slider.maximum() == 99
+    yield slider
+    slider.initStyleOption(QStyleOptionSlider())
+
+
+def test_change_floatslider_range(gslider: _GenericSlider, qtbot):
+    with qtbot.waitSignals([gslider.rangeChanged, gslider.valueChanged]):
+        gslider.setMinimum(10)
+
+    assert gslider.value() == 10 == gslider.minimum()
+    assert gslider.maximum() == 99
+
+    with qtbot.waitSignal(gslider.rangeChanged):
+        gslider.setMaximum(90)
+    assert gslider.value() == 10 == gslider.minimum()
+    assert gslider.maximum() == 90
+
+    with qtbot.waitSignals([gslider.rangeChanged, gslider.valueChanged]):
+        gslider.setRange(20, 40)
+    assert gslider.value() == 20 == gslider.minimum()
+    assert gslider.maximum() == 40
+
+    with qtbot.waitSignal(gslider.valueChanged):
+        gslider.setValue(30)
+    assert gslider.value() == 30
+
+    with qtbot.waitSignals([gslider.rangeChanged, gslider.valueChanged]):
+        gslider.setMaximum(25)
+    assert gslider.value() == 25 == gslider.maximum()
+    assert gslider.minimum() == 20
+
+
+def test_float_values(gslider: _GenericSlider, qtbot):
+    with qtbot.waitSignal(gslider.rangeChanged):
+        gslider.setRange(0.25, 0.75)
+    assert gslider.minimum() == 0.25
+    assert gslider.maximum() == 0.75
+
+    with qtbot.waitSignal(gslider.valueChanged):
+        gslider.setValue(0.55)
+    assert gslider.value() == 0.55
+
+    with qtbot.waitSignal(gslider.valueChanged):
+        gslider.setValue(1.55)
+    assert gslider.value() == 0.75 == gslider.maximum()
+
+
+def test_ticks(gslider: _GenericSlider, qtbot):
+    gslider.setTickInterval(0.3)
+    assert gslider.tickInterval() == 0.3
+    gslider.setTickPosition(gslider.TickPosition.TicksAbove)
+    gslider.show()
+
+
+def test_show(gslider, qtbot):
+    gslider.show()
+
+
+@pytest.mark.skipif(platform.system() != "Darwin", reason="cross-platform is tricky")
+def test_press_move_release(gslider: _GenericSlider, qtbot):
+    # this fail on vertical came with pyside6.2 ... need to debug
+    # still works in practice, but test fails to catch signals
+    if gslider.orientation() == Qt.Orientation.Vertical:
+        pytest.xfail()
+
+    assert gslider._pressedControl == QStyle.SubControl.SC_None
+
+    opt = QStyleOptionSlider()
+    gslider.initStyleOption(opt)
+    style = gslider.style()
+    hrect = style.subControlRect(
+        QStyle.ComplexControl.CC_Slider, opt, QStyle.SubControl.SC_SliderHandle
+    )
+    handle_pos = gslider.mapToGlobal(hrect.center())
+
+    with qtbot.waitSignal(gslider.sliderPressed):
+        qtbot.mousePress(gslider, Qt.MouseButton.LeftButton, pos=handle_pos)
+
+    assert gslider._pressedControl == QStyle.SubControl.SC_SliderHandle
+
+    with qtbot.waitSignals([gslider.sliderMoved, gslider.valueChanged]):
+        shift = (
+            QPoint(0, -8)
+            if gslider.orientation() == Qt.Orientation.Vertical
+            else QPoint(8, 0)
+        )
+        gslider.mouseMoveEvent(_mouse_event(handle_pos + shift))
+
+    with qtbot.waitSignal(gslider.sliderReleased):
+        qtbot.mouseRelease(gslider, Qt.MouseButton.LeftButton, pos=handle_pos)
+
+    assert gslider._pressedControl == QStyle.SubControl.SC_None
+
+    gslider.show()
+    with qtbot.waitSignal(gslider.sliderPressed):
+        qtbot.mousePress(gslider, Qt.MouseButton.LeftButton, pos=handle_pos)
+
+
+@skip_on_linux_qt6
+def test_hover(gslider: _GenericSlider):
+
+    # stub
+    opt = QStyleOptionSlider()
+    gslider.initStyleOption(opt)
+    style = gslider.style()
+    hrect = style.subControlRect(
+        QStyle.ComplexControl.CC_Slider, opt, QStyle.SubControl.SC_SliderHandle
+    )
+    handle_pos = QPointF(gslider.mapToGlobal(hrect.center()))
+
+    assert gslider._hoverControl == QStyle.SubControl.SC_None
+
+    gslider.event(_hover_event(QEvent.Type.HoverEnter, handle_pos, QPointF(), gslider))
+    assert gslider._hoverControl == QStyle.SubControl.SC_SliderHandle
+
+    gslider.event(
+        _hover_event(QEvent.Type.HoverLeave, QPointF(-1000, -1000), handle_pos, gslider)
+    )
+    assert gslider._hoverControl == QStyle.SubControl.SC_None
+
+
+def test_wheel(gslider: _GenericSlider, qtbot):
+    with qtbot.waitSignal(gslider.valueChanged):
+        gslider.wheelEvent(_wheel_event(120))
+
+    gslider.wheelEvent(_wheel_event(0))
+
+
+def test_position(gslider: _GenericSlider, qtbot):
+    gslider.setSliderPosition(21.2)
+    assert gslider.sliderPosition() == 21.2
+
+
+def test_steps(gslider: _GenericSlider, qtbot):
+    gslider.setSingleStep(0.1)
+    assert gslider.singleStep() == 0.1
+
+    gslider.setSingleStep(1.5e20)
+    assert gslider.singleStep() == 1.5e20
+
+    gslider.setPageStep(0.2)
+    assert gslider.pageStep() == 0.2
+
+    gslider.setPageStep(1.5e30)
+    assert gslider.pageStep() == 1.5e30
+
+
+@pytest.mark.parametrize("mag", list(range(4, 37, 4)) + list(range(-4, -37, -4)))
+def test_slider_extremes(gslider: _GenericSlider, mag, qtbot):
+    _mag = 10**mag
+    with qtbot.waitSignal(gslider.rangeChanged):
+        gslider.setRange(-_mag, _mag)
+    for i in _linspace(-_mag, _mag, 10):
+        gslider.setValue(i)
+        assert math.isclose(gslider.value(), i, rel_tol=1e-8)
+        gslider.initStyleOption(QStyleOptionSlider())
+
+
+# args are (min: float, max: float, position: int, span: int, upsideDown: bool)
+@pytest.mark.parametrize(
+    "args, result",
+    [
+        # (min, max, pos, span[, inverted]), expectation
+        # data range (1, 2)
+        ((1, 2, 50, 100), 1.5),
+        ((1, 2, 70, 100), 1.7),
+        ((1, 2, 70, 100, True), 1.3),  # inverted appearance
+        ((1, 2, 170, 100), 2),
+        ((1, 2, 100, 100), 2),
+        ((1, 2, -30, 100), 1),
+        # data range (-2, 2)
+        ((-2, 2, 50, 100), 0),
+        ((-2, 2, 75, 100), 1),
+        ((-2, 2, 75, 100, True), -1),  # inverted appearance
+        ((-2, 2, 170, 100), 2),
+        ((-2, 2, 100, 100), 2),
+        ((-2, 2, -30, 100), -2),
+    ],
+)
+def test_slider_value_from_position(args, result):
+    assert math.isclose(_sliderValueFromPosition(*args), result)

tests/test_sliders/test_labeled_slider.py

@@ -0,0 +1,11 @@
+from superqt import QLabeledRangeSlider
+
+
+def test_labeled_slider_api(qtbot):
+    slider = QLabeledRangeSlider()
+    qtbot.addWidget(slider)
+    slider.hideBar()
+    slider.showBar()
+    slider.setBarVisible()
+    slider.setBarMovesAllHandles()
+    slider.setBarIsRigid()

tests/test_sliders/test_range_slider.py

@@ -0,0 +1,174 @@
+import math
+
+import pytest
+from qtpy.QtCore import QEvent, QPoint, QPointF, Qt
+from qtpy.QtWidgets import QStyle, QStyleOptionSlider
+
+from superqt import QDoubleRangeSlider, QRangeSlider
+
+from ._testutil import (
+    _hover_event,
+    _linspace,
+    _mouse_event,
+    _wheel_event,
+    skip_on_linux_qt6,
+)
+
+
+@pytest.fixture(params=[Qt.Orientation.Horizontal, Qt.Orientation.Vertical])
+def gslider(qtbot, request):
+    slider = QDoubleRangeSlider(request.param)
+    qtbot.addWidget(slider)
+    assert slider.value() == (20, 80)
+    assert slider.minimum() == 0
+    assert slider.maximum() == 99
+    yield slider
+    slider.initStyleOption(QStyleOptionSlider())
+
+
+def test_change_floatslider_range(gslider: QRangeSlider, qtbot):
+    with qtbot.waitSignals([gslider.rangeChanged, gslider.valueChanged]):
+        gslider.setMinimum(30)
+
+    assert gslider.value()[0] == 30 == gslider.minimum()
+    assert gslider.maximum() == 99
+
+    with qtbot.waitSignal(gslider.rangeChanged):
+        gslider.setMaximum(70)
+    assert gslider.value()[0] == 30 == gslider.minimum()
+    assert gslider.value()[1] == 70 == gslider.maximum()
+
+    with qtbot.waitSignals([gslider.rangeChanged, gslider.valueChanged]):
+        gslider.setRange(40, 60)
+    assert gslider.value()[0] == 40 == gslider.minimum()
+    assert gslider.maximum() == 60
+
+    with qtbot.waitSignal(gslider.valueChanged):
+        gslider.setValue([40, 50])
+    assert gslider.value()[0] == 40 == gslider.minimum()
+    assert gslider.value()[1] == 50
+
+    with qtbot.waitSignals([gslider.rangeChanged, gslider.valueChanged]):
+        gslider.setMaximum(45)
+    assert gslider.value()[0] == 40 == gslider.minimum()
+    assert gslider.value()[1] == 45 == gslider.maximum()
+
+
+def test_float_values(gslider: QRangeSlider, qtbot):
+    with qtbot.waitSignal(gslider.rangeChanged):
+        gslider.setRange(0.1, 0.9)
+    assert gslider.minimum() == 0.1
+    assert gslider.maximum() == 0.9
+
+    with qtbot.waitSignal(gslider.valueChanged):
+        gslider.setValue([0.4, 0.6])
+    assert gslider.value() == (0.4, 0.6)
+
+    with qtbot.waitSignal(gslider.valueChanged):
+        gslider.setValue([0, 1.9])
+    assert gslider.value()[0] == 0.1 == gslider.minimum()
+    assert gslider.value()[1] == 0.9 == gslider.maximum()
+
+
+def test_position(gslider: QRangeSlider, qtbot):
+    gslider.setSliderPosition([10, 80])
+    assert gslider.sliderPosition() == (10, 80)
+
+
+def test_steps(gslider: QRangeSlider, qtbot):
+    gslider.setSingleStep(0.1)
+    assert gslider.singleStep() == 0.1
+
+    gslider.setSingleStep(1.5e20)
+    assert gslider.singleStep() == 1.5e20
+
+    gslider.setPageStep(0.2)
+    assert gslider.pageStep() == 0.2
+
+    gslider.setPageStep(1.5e30)
+    assert gslider.pageStep() == 1.5e30
+
+
+@pytest.mark.parametrize("mag", list(range(4, 37, 4)) + list(range(-4, -37, -4)))
+def test_slider_extremes(gslider: QRangeSlider, mag, qtbot):
+    _mag = 10**mag
+    with qtbot.waitSignal(gslider.rangeChanged):
+        gslider.setRange(-_mag, _mag)
+    for i in _linspace(-_mag, _mag, 10):
+        gslider.setValue((i, _mag))
+        assert math.isclose(gslider.value()[0], i, rel_tol=1e-8)
+        gslider.initStyleOption(QStyleOptionSlider())
+
+
+def test_ticks(gslider: QRangeSlider, qtbot):
+    gslider.setTickInterval(0.3)
+    assert gslider.tickInterval() == 0.3
+    gslider.setTickPosition(gslider.TickPosition.TicksAbove)
+    gslider.show()
+
+
+def test_show(gslider, qtbot):
+    gslider.show()
+
+
+def test_press_move_release(gslider: QRangeSlider, qtbot):
+    # this fail on vertical came with pyside6.2 ... need to debug
+    # still works in practice, but test fails to catch signals
+    if gslider.orientation() == Qt.Orientation.Vertical:
+        pytest.xfail()
+
+    assert gslider._pressedControl == QStyle.SubControl.SC_None
+
+    opt = QStyleOptionSlider()
+    gslider.initStyleOption(opt)
+    style = gslider.style()
+    hrect = style.subControlRect(
+        QStyle.ComplexControl.CC_Slider, opt, QStyle.SubControl.SC_SliderHandle
+    )
+    handle_pos = gslider.mapToGlobal(hrect.center())
+
+    with qtbot.waitSignal(gslider.sliderPressed):
+        qtbot.mousePress(gslider, Qt.MouseButton.LeftButton, pos=handle_pos)
+
+    assert gslider._pressedControl == QStyle.SubControl.SC_SliderHandle
+
+    with qtbot.waitSignals([gslider.sliderMoved, gslider.valueChanged]):
+        shift = (
+            QPoint(0, -8)
+            if gslider.orientation() == Qt.Orientation.Vertical
+            else QPoint(8, 0)
+        )
+        gslider.mouseMoveEvent(_mouse_event(handle_pos + shift))
+
+    with qtbot.waitSignal(gslider.sliderReleased):
+        qtbot.mouseRelease(gslider, Qt.MouseButton.LeftButton, pos=handle_pos)
+
+    assert gslider._pressedControl == QStyle.SubControl.SC_None
+
+    gslider.show()
+    with qtbot.waitSignal(gslider.sliderPressed):
+        qtbot.mousePress(gslider, Qt.MouseButton.LeftButton, pos=handle_pos)
+
+
+@skip_on_linux_qt6
+def test_hover(gslider: QRangeSlider):
+
+    hrect = gslider._handleRect(0)
+    handle_pos = QPointF(gslider.mapToGlobal(hrect.center()))
+
+    assert gslider._hoverControl == QStyle.SubControl.SC_None
+
+    gslider.event(_hover_event(QEvent.Type.HoverEnter, handle_pos, QPointF(), gslider))
+    assert gslider._hoverControl == QStyle.SubControl.SC_SliderHandle
+
+    gslider.event(
+        _hover_event(QEvent.Type.HoverLeave, QPointF(-1000, -1000), handle_pos, gslider)
+    )
+    assert gslider._hoverControl == QStyle.SubControl.SC_None
+
+
+def test_wheel(gslider: QRangeSlider, qtbot):
+    with qtbot.waitSignal(gslider.valueChanged):
+        gslider.wheelEvent(_wheel_event(120))
+
+    gslider.wheelEvent(_wheel_event(0))

tests/test_sliders/test_single_value_sliders.py

@@ -0,0 +1,235 @@
+import math
+import platform
+from contextlib import suppress
+
+import pytest
+from qtpy.QtCore import QEvent, QPoint, QPointF, Qt
+from qtpy.QtWidgets import QSlider, QStyle, QStyleOptionSlider
+
+from superqt import QDoubleSlider, QLabeledDoubleSlider, QLabeledSlider
+from superqt.sliders._generic_slider import _GenericSlider
+
+from ._testutil import (
+    QT_VERSION,
+    _hover_event,
+    _linspace,
+    _mouse_event,
+    _wheel_event,
+    skip_on_linux_qt6,
+)
+
+
+@pytest.fixture(
+    params=[Qt.Orientation.Horizontal, Qt.Orientation.Vertical],
+    ids=["horizontal", "vertical"],
+)
+def orientation(request):
+    return request.param
+
+
+START_MI_MAX_VAL = (0, 99, 0)
+TEST_SLIDERS = [QDoubleSlider, QLabeledSlider, QLabeledDoubleSlider]
+
+
+def _assert_value_in_range(sld):
+    val = sld.value()
+    if isinstance(val, (int, float)):
+        val = (val,)
+    assert all(sld.minimum() <= v <= sld.maximum() for v in val)
+
+
+@pytest.fixture(params=TEST_SLIDERS)
+def sld(request, qtbot, orientation):
+    Cls = request.param
+    slider = Cls(orientation)
+    slider.setRange(*START_MI_MAX_VAL[:2])
+    slider.setValue(START_MI_MAX_VAL[2])
+    qtbot.addWidget(slider)
+    assert (slider.minimum(), slider.maximum(), slider.value()) == START_MI_MAX_VAL
+    _assert_value_in_range(slider)
+    yield slider
+    _assert_value_in_range(slider)
+    with suppress(AttributeError):
+        slider.initStyleOption(QStyleOptionSlider())
+
+
+def called_with(*expected_result):
+    """Use in check_params_cbs to assert that a callback is called as expected.
+
+    e.g. `called_with(20, 50)` returns a callback that checks that the callback
+    is called with the arguments (20, 50)
+    """
+
+    def check_emitted_values(*values):
+        return values == expected_result
+
+    return check_emitted_values
+
+
+def test_change_floatslider_range(sld: _GenericSlider, qtbot):
+    BOTH = [sld.rangeChanged, sld.valueChanged]
+
+    for signals, checks, funcname, args in [
+        (BOTH, [called_with(10, 99), called_with(10)], "setMinimum", (10,)),
+        ([sld.rangeChanged], [called_with(10, 90)], "setMaximum", (90,)),
+        (BOTH, [called_with(20, 40), called_with(20)], "setRange", (20, 40)),
+        ([sld.valueChanged], [called_with(30)], "setValue", (30,)),
+        (BOTH, [called_with(20, 25), called_with(25)], "setMaximum", (25,)),
+        ([sld.valueChanged], [called_with(23)], "setValue", (23,)),
+    ]:
+        with qtbot.waitSignals(signals, check_params_cbs=checks, timeout=500):
+            getattr(sld, funcname)(*args)
+        _assert_value_in_range(sld)
+
+
+def test_float_values(sld: _GenericSlider, qtbot):
+    if type(sld) is QLabeledSlider:
+        pytest.skip()
+    for signals, checks, funcname, args in [
+        (sld.rangeChanged, called_with(0.1, 0.9), "setRange", (0.1, 0.9)),
+        (sld.valueChanged, called_with(0.4), "setValue", (0.4,)),
+        (sld.valueChanged, called_with(0.1), "setValue", (0,)),
+        (sld.valueChanged, called_with(0.9), "setValue", (1.9,)),
+    ]:
+        with qtbot.waitSignal(signals, check_params_cb=checks, timeout=400):
+            getattr(sld, funcname)(*args)
+        _assert_value_in_range(sld)
+
+
+def test_ticks(sld: _GenericSlider, qtbot):
+    sld.setTickInterval(3)
+    assert sld.tickInterval() == 3
+    sld.setTickPosition(QSlider.TickPosition.TicksAbove)
+    sld.show()
+
+
+@pytest.mark.skipif(platform.system() != "Darwin", reason="cross-platform is tricky")
+def test_press_move_release(sld: _GenericSlider, qtbot):
+    if hasattr(sld, "_slider") and sld._slider.orientation() == Qt.Orientation.Vertical:
+        pytest.xfail("test failing for vertical at the moment")
+    # this fail on vertical came with pyside6.2 ... need to debug
+    # still works in practice, but test fails to catch signals
+    if sld.orientation() == Qt.Orientation.Vertical:
+        pytest.xfail()
+
+    _real_sld = getattr(sld, "_slider", sld)
+
+    with suppress(AttributeError):  # for QSlider
+        assert _real_sld._pressedControl == QStyle.SubControl.SC_None
+
+    opt = QStyleOptionSlider()
+    _real_sld.initStyleOption(opt)
+    style = _real_sld.style()
+    hrect = style.subControlRect(
+        QStyle.ComplexControl.CC_Slider, opt, QStyle.SubControl.SC_SliderHandle
+    )
+    handle_pos = _real_sld.mapToGlobal(hrect.center())
+
+    with qtbot.waitSignal(_real_sld.sliderPressed, timeout=300):
+        qtbot.mousePress(_real_sld, Qt.MouseButton.LeftButton, pos=handle_pos)
+
+    with suppress(AttributeError):
+        assert sld._pressedControl == QStyle.SubControl.SC_SliderHandle
+
+    with qtbot.waitSignals(
+        [_real_sld.sliderMoved, _real_sld.valueChanged], timeout=300
+    ):
+        shift = (
+            QPoint(0, -8)
+            if _real_sld.orientation() == Qt.Orientation.Vertical
+            else QPoint(8, 0)
+        )
+        _real_sld.mouseMoveEvent(_mouse_event(handle_pos + shift))
+
+    with qtbot.waitSignal(_real_sld.sliderReleased, timeout=300):
+        qtbot.mouseRelease(_real_sld, Qt.MouseButton.LeftButton, pos=handle_pos)
+
+    with suppress(AttributeError):
+        assert _real_sld._pressedControl == QStyle.SubControl.SC_None
+
+    sld.show()
+    with qtbot.waitSignal(_real_sld.sliderPressed, timeout=300):
+        qtbot.mousePress(_real_sld, Qt.MouseButton.LeftButton, pos=handle_pos)
+
+
+@skip_on_linux_qt6
+def test_hover(sld: _GenericSlider):
+
+    _real_sld = getattr(sld, "_slider", sld)
+
+    opt = QStyleOptionSlider()
+    _real_sld.initStyleOption(opt)
+    hrect = _real_sld.style().subControlRect(
+        QStyle.ComplexControl.CC_Slider, opt, QStyle.SubControl.SC_SliderHandle
+    )
+    handle_pos = QPointF(sld.mapToGlobal(hrect.center()))
+
+    with suppress(AttributeError):  # for QSlider
+        assert _real_sld._hoverControl == QStyle.SubControl.SC_None
+
+    _real_sld.event(_hover_event(QEvent.Type.HoverEnter, handle_pos, QPointF(), sld))
+    with suppress(AttributeError):  # for QSlider
+        assert _real_sld._hoverControl == QStyle.SubControl.SC_SliderHandle
+
+    _real_sld.event(
+        _hover_event(QEvent.Type.HoverLeave, QPointF(-1000, -1000), handle_pos, sld)
+    )
+    with suppress(AttributeError):  # for QSlider
+        assert _real_sld._hoverControl == QStyle.SubControl.SC_None
+
+
+def test_wheel(sld: _GenericSlider, qtbot):
+
+    if type(sld) is QLabeledSlider and QT_VERSION < (5, 12):
+        pytest.skip()
+
+    _real_sld = getattr(sld, "_slider", sld)
+    with qtbot.waitSignal(sld.valueChanged, timeout=400):
+        _real_sld.wheelEvent(_wheel_event(120))
+
+    _real_sld.wheelEvent(_wheel_event(0))
+
+
+def test_position(sld: _GenericSlider, qtbot):
+    sld.setSliderPosition(21)
+    assert sld.sliderPosition() == 21
+
+    if type(sld) is not QLabeledSlider:
+        sld.setSliderPosition(21.5)
+        assert sld.sliderPosition() == 21.5
+
+
+def test_steps(sld: _GenericSlider, qtbot):
+
+    sld.setSingleStep(11)
+    assert sld.singleStep() == 11
+
+    sld.setPageStep(16)
+    assert sld.pageStep() == 16
+
+    if type(sld) is not QLabeledSlider:
+
+        sld.setSingleStep(0.1)
+        assert sld.singleStep() == 0.1
+
+        sld.setSingleStep(1.5e20)
+        assert sld.singleStep() == 1.5e20
+
+        sld.setPageStep(0.2)
+        assert sld.pageStep() == 0.2
+
+        sld.setPageStep(1.5e30)
+        assert sld.pageStep() == 1.5e30
+
+
+@pytest.mark.parametrize("mag", list(range(4, 37, 4)) + list(range(-4, -37, -4)))
+def test_slider_extremes(sld: _GenericSlider, mag, qtbot):
+    if type(sld) is QLabeledSlider:
+        pytest.skip()
+
+    _mag = 10**mag
+    with qtbot.waitSignal(sld.rangeChanged, timeout=400):
+        sld.setRange(-_mag, _mag)
+    for i in _linspace(-_mag, _mag, 10):
+        sld.setValue(i)
+        assert math.isclose(sld.value(), i, rel_tol=1e-8)

tests/test_sliders/test_slider.py

@@ -1,10 +1,11 @@
 import platform
 
 import pytest
+from qtpy import API_NAME
+from qtpy.QtCore import Qt
 
-from qtrangeslider import QRangeSlider
-from qtrangeslider.qtcompat import API_NAME
-from qtrangeslider.qtcompat.QtCore import Qt
+from superqt import QRangeSlider
+from superqt.sliders._generic_range_slider import SC_BAR, SC_HANDLE, SC_NONE
 
 NOT_LINUX = platform.system() != "Linux"
 NOT_PYSIDE2 = API_NAME != "PySide2"
@@ -14,13 +15,33 @@ skipmouse = pytest.mark.skipif(NOT_LINUX or NOT_PYSIDE2, reason="mouse tests fin
 
 @pytest.mark.parametrize("orientation", ["Horizontal", "Vertical"])
 def test_basic(qtbot, orientation):
-    rs = QRangeSlider(getattr(Qt, orientation))
+    rs = QRangeSlider(getattr(Qt.Orientation, orientation))
     qtbot.addWidget(rs)
 
 
+@pytest.mark.parametrize("orientation", ["Horizontal", "Vertical"])
+def test_value(qtbot, orientation):
+    rs = QRangeSlider(getattr(Qt.Orientation, orientation))
+    qtbot.addWidget(rs)
+    rs.setValue([10, 20])
+    assert rs.value() == (10, 20)
+
+
+@pytest.mark.parametrize("orientation", ["Horizontal", "Vertical"])
+def test_range(qtbot, orientation):
+    rs = QRangeSlider(getattr(Qt.Orientation, orientation))
+    qtbot.addWidget(rs)
+    rs.setValue([10, 20])
+    assert rs.value() == (10, 20)
+    rs.setRange(15, 20)
+    assert rs.value() == (15, 20)
+    assert rs.minimum() == 15
+    assert rs.maximum() == 20
+
+
 @skipmouse
 def test_drag_handles(qtbot):
-    rs = QRangeSlider(Qt.Horizontal)
+    rs = QRangeSlider(Qt.Orientation.Horizontal)
     qtbot.addWidget(rs)
     rs.setRange(0, 99)
     rs.setValue((20, 80))
@@ -28,11 +49,11 @@ def test_drag_handles(qtbot):
     rs.show()
 
     # press the left handle
-    opt = rs._getStyleOption()
-    pos = rs._handleRects(opt, 0).center()
+    pos = rs._handleRect(0).center()
     with qtbot.waitSignal(rs.sliderPressed):
-        qtbot.mousePress(rs, Qt.LeftButton, pos=pos)
-    assert rs._pressedControl == ("handle", 0)
+        qtbot.mousePress(rs, Qt.MouseButton.LeftButton, pos=pos)
+    assert rs._pressedControl == SC_HANDLE
+    assert rs._pressedIndex == 0
 
     # drag the left handle
     with qtbot.waitSignals([rs.sliderMoved] * 13):  # couple less signals
@@ -41,17 +62,18 @@ def test_drag_handles(qtbot):
             qtbot.mouseMove(rs, pos)
 
     with qtbot.waitSignal(rs.sliderReleased):
-        qtbot.mouseRelease(rs, Qt.LeftButton)
+        qtbot.mouseRelease(rs, Qt.MouseButton.LeftButton)
 
     # check the values
     assert rs.value()[0] > 30
-    assert rs._pressedControl == rs._NULL_CTRL
+    assert rs._pressedControl == SC_NONE
 
     # press the right handle
-    pos = rs._handleRects(opt, 1).center()
+    pos = rs._handleRect(1).center()
     with qtbot.waitSignal(rs.sliderPressed):
-        qtbot.mousePress(rs, Qt.LeftButton, pos=pos)
-    assert rs._pressedControl == ("handle", 1)
+        qtbot.mousePress(rs, Qt.MouseButton.LeftButton, pos=pos)
+    assert rs._pressedControl == SC_HANDLE
+    assert rs._pressedIndex == 1
 
     # drag the right handle
     with qtbot.waitSignals([rs.sliderMoved] * 13):  # couple less signals
@@ -59,16 +81,16 @@ def test_drag_handles(qtbot):
             pos.setX(pos.x() - 2)
             qtbot.mouseMove(rs, pos)
     with qtbot.waitSignal(rs.sliderReleased):
-        qtbot.mouseRelease(rs, Qt.LeftButton)
+        qtbot.mouseRelease(rs, Qt.MouseButton.LeftButton)
 
     # check the values
     assert rs.value()[1] < 70
-    assert rs._pressedControl == rs._NULL_CTRL
+    assert rs._pressedControl == SC_NONE
 
 
 @skipmouse
 def test_drag_handles_beyond_edge(qtbot):
-    rs = QRangeSlider(Qt.Horizontal)
+    rs = QRangeSlider(Qt.Orientation.Horizontal)
     qtbot.addWidget(rs)
     rs.setRange(0, 99)
     rs.setValue((20, 80))
@@ -76,26 +98,26 @@ def test_drag_handles_beyond_edge(qtbot):
     rs.show()
 
     # press the right handle
-    opt = rs._getStyleOption()
-    pos = rs._handleRects(opt, 1).center()
+    pos = rs._handleRect(1).center()
     with qtbot.waitSignal(rs.sliderPressed):
-        qtbot.mousePress(rs, Qt.LeftButton, pos=pos)
-    assert rs._pressedControl == ("handle", 1)
+        qtbot.mousePress(rs, Qt.MouseButton.LeftButton, pos=pos)
+    assert rs._pressedControl == SC_HANDLE
+    assert rs._pressedIndex == 1
 
     # drag the handle off the right edge and make sure the value gets to the max
-    for _ in range(5):
-        pos.setX(pos.x() + 20)
+    for _ in range(7):
+        pos.setX(pos.x() + 10)
         qtbot.mouseMove(rs, pos)
 
     with qtbot.waitSignal(rs.sliderReleased):
-        qtbot.mouseRelease(rs, Qt.LeftButton)
+        qtbot.mouseRelease(rs, Qt.MouseButton.LeftButton)
 
     assert rs.value()[1] == 99
 
 
 @skipmouse
 def test_bar_drag_beyond_edge(qtbot):
-    rs = QRangeSlider(Qt.Horizontal)
+    rs = QRangeSlider(Qt.Orientation.Horizontal)
     qtbot.addWidget(rs)
     rs.setRange(0, 99)
     rs.setValue((20, 80))
@@ -105,8 +127,9 @@ def test_bar_drag_beyond_edge(qtbot):
     # press the right handle
     pos = rs.rect().center()
     with qtbot.waitSignal(rs.sliderPressed):
-        qtbot.mousePress(rs, Qt.LeftButton, pos=pos)
-    assert rs._pressedControl == ("bar", 1)
+        qtbot.mousePress(rs, Qt.MouseButton.LeftButton, pos=pos)
+    assert rs._pressedControl == SC_BAR
+    assert rs._pressedIndex == 1
 
     # drag the handle off the right edge and make sure the value gets to the max
     for _ in range(15):
@@ -114,6 +137,6 @@ def test_bar_drag_beyond_edge(qtbot):
         qtbot.mouseMove(rs, pos)
 
     with qtbot.waitSignal(rs.sliderReleased):
-        qtbot.mouseRelease(rs, Qt.LeftButton)
+        qtbot.mouseRelease(rs, Qt.MouseButton.LeftButton)
 
     assert rs.value()[1] == 99