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d3db28b3f4e394cee5ebd077a24fd234d3b7d072
gtk/gtk/gtkemojichooser.c
Matthias Clasen 5c6fedae17 emojichooser: Avoid extra work 
When selecting an emoji in the recent section, there is no need
to add it to the recent section again. This avoids a sequence of
unfortunate events, where we reconstruct the entire recent section,
thereby removing the focus child, causing the focus to revert to
the entry, causing the entry to select the entire text. In the
case of Ctrl-clicking to select multiple Emoji, the effect is that
the section Emoji will replace the entire entry text, which is
suprising and unintended.

Fixes: #6336
2024-08-31 16:28:20 -04:00

1406 lines
42 KiB
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/* gtkemojichooser.c: An Emoji chooser widget
* Copyright 2017, Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkemojichooser.h"
#include "gtkadjustmentprivate.h"
#include "gtkbox.h"
#include "gtkbutton.h"
#include "gtkentry.h"
#include "gtkflowboxprivate.h"
#include "gtkstack.h"
#include "gtklabel.h"
#include "gtkgesturelongpress.h"
#include "gtkpopover.h"
#include "gtkscrolledwindow.h"
#include "gtksearchentryprivate.h"
#include "gtktext.h"
#include "gtknative.h"
#include "gtkwidgetprivate.h"
#include "gdk/gdkprofilerprivate.h"
#include "gtkmain.h"
#include "gtkprivate.h"
/**
* GtkEmojiChooser:
*
* The `GtkEmojiChooser` is used by text widgets such as `GtkEntry` or
* `GtkTextView` to let users insert Emoji characters.
*
* ![An example GtkEmojiChooser](emojichooser.png)
*
* `GtkEmojiChooser` emits the [signal@Gtk.EmojiChooser::emoji-picked]
* signal when an Emoji is selected.
*
* # Shortcuts and Gestures
*
* `GtkEmojiChooser` supports the following keyboard shortcuts:
*
* - <kbd>Ctrl</kbd>+<kbd>N</kbd> scrolls th the next section.
* - <kbd>Ctrl</kbd>+<kbd>P</kbd> scrolls th the previous section.
*
* # Actions
*
* `GtkEmojiChooser` defines a set of built-in actions:
*
* - `scroll.section` scrolls to the next or previous section.
*
* # CSS nodes
*
* ```
* popover
* ├── box.emoji-searchbar
* │ ╰── entry.search
* ╰── box.emoji-toolbar
* ├── button.image-button.emoji-section
* ├── ...
* ╰── button.image-button.emoji-section
* ```
*
* Every `GtkEmojiChooser` consists of a main node called popover.
* The contents of the popover are largely implementation defined
* and supposed to inherit general styles.
* The top searchbar used to search emoji and gets the .emoji-searchbar
* style class itself.
* The bottom toolbar used to switch between different emoji categories
* consists of buttons with the .emoji-section style class and gets the
* .emoji-toolbar style class itself.
*/
#define BOX_SPACE 6
GType gtk_emoji_chooser_child_get_type (void);
#define GTK_TYPE_EMOJI_CHOOSER_CHILD (gtk_emoji_chooser_child_get_type ())
typedef struct
{
GtkFlowBoxChild parent;
GtkWidget *variations;
} GtkEmojiChooserChild;
typedef struct
{
GtkFlowBoxChildClass parent_class;
} GtkEmojiChooserChildClass;
G_DEFINE_TYPE (GtkEmojiChooserChild, gtk_emoji_chooser_child, GTK_TYPE_FLOW_BOX_CHILD)
static void
gtk_emoji_chooser_child_init (GtkEmojiChooserChild *child)
{
}
static void
gtk_emoji_chooser_child_dispose (GObject *object)
{
GtkEmojiChooserChild *child = (GtkEmojiChooserChild *)object;
g_clear_pointer (&child->variations, gtk_widget_unparent);
G_OBJECT_CLASS (gtk_emoji_chooser_child_parent_class)->dispose (object);
}
static void
gtk_emoji_chooser_child_size_allocate (GtkWidget *widget,
int width,
int height,
int baseline)
{
GtkEmojiChooserChild *child = (GtkEmojiChooserChild *)widget;
GTK_WIDGET_CLASS (gtk_emoji_chooser_child_parent_class)->size_allocate (widget, width, height, baseline);
if (child->variations)
gtk_popover_present (GTK_POPOVER (child->variations));
}
static gboolean
gtk_emoji_chooser_child_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GtkEmojiChooserChild *child = (GtkEmojiChooserChild *)widget;
if (child->variations && gtk_widget_is_visible (child->variations))
{
if (gtk_widget_child_focus (child->variations, direction))
return TRUE;
}
return GTK_WIDGET_CLASS (gtk_emoji_chooser_child_parent_class)->focus (widget, direction);
}
static void scroll_to_child (GtkWidget *child);
static gboolean
gtk_emoji_chooser_child_grab_focus (GtkWidget *widget)
{
gtk_widget_grab_focus_self (widget);
scroll_to_child (widget);
return TRUE;
}
static void show_variations (GtkEmojiChooser *chooser,
GtkWidget *child);
static void
gtk_emoji_chooser_child_popup_menu (GtkWidget *widget,
const char *action_name,
GVariant *parameters)
{
GtkWidget *chooser;
chooser = gtk_widget_get_ancestor (widget, GTK_TYPE_EMOJI_CHOOSER);
show_variations (GTK_EMOJI_CHOOSER (chooser), widget);
}
static void
gtk_emoji_chooser_child_class_init (GtkEmojiChooserChildClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
object_class->dispose = gtk_emoji_chooser_child_dispose;
widget_class->size_allocate = gtk_emoji_chooser_child_size_allocate;
widget_class->focus = gtk_emoji_chooser_child_focus;
widget_class->grab_focus = gtk_emoji_chooser_child_grab_focus;
gtk_widget_class_install_action (widget_class, "menu.popup", NULL, gtk_emoji_chooser_child_popup_menu);
gtk_widget_class_add_binding_action (widget_class,
GDK_KEY_F10, GDK_SHIFT_MASK,
"menu.popup",
NULL);
gtk_widget_class_add_binding_action (widget_class,
GDK_KEY_Menu, 0,
"menu.popup",
NULL);
gtk_widget_class_set_css_name (widget_class, "emoji");
}
typedef struct {
GtkWidget *box;
GtkWidget *heading;
GtkWidget *button;
int group;
gunichar label;
gboolean empty;
} EmojiSection;
struct _GtkEmojiChooser
{
GtkPopover parent_instance;
GtkWidget *search_entry;
GtkWidget *stack;
GtkWidget *scrolled_window;
int emoji_max_width;
EmojiSection recent;
EmojiSection people;
EmojiSection body;
EmojiSection nature;
EmojiSection food;
EmojiSection travel;
EmojiSection activities;
EmojiSection objects;
EmojiSection symbols;
EmojiSection flags;
GVariant *data;
GtkWidget *box;
GVariantIter *iter;
guint populate_idle;
GSettings *settings;
};
struct _GtkEmojiChooserClass {
GtkPopoverClass parent_class;
};
enum {
EMOJI_PICKED,
LAST_SIGNAL
};
static int signals[LAST_SIGNAL];
G_DEFINE_TYPE (GtkEmojiChooser, gtk_emoji_chooser, GTK_TYPE_POPOVER)
static void
gtk_emoji_chooser_finalize (GObject *object)
{
GtkEmojiChooser *chooser = GTK_EMOJI_CHOOSER (object);
if (chooser->populate_idle)
g_source_remove (chooser->populate_idle);
g_clear_pointer (&chooser->data, g_variant_unref);
g_clear_pointer (&chooser->iter, g_variant_iter_free);
g_clear_object (&chooser->settings);
G_OBJECT_CLASS (gtk_emoji_chooser_parent_class)->finalize (object);
}
static void
gtk_emoji_chooser_dispose (GObject *object)
{
gtk_widget_dispose_template (GTK_WIDGET (object), GTK_TYPE_EMOJI_CHOOSER);
G_OBJECT_CLASS (gtk_emoji_chooser_parent_class)->dispose (object);
}
static void
scroll_to_section (EmojiSection *section)
{
GtkEmojiChooser *chooser;
GtkAdjustment *adj;
graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 0, 0);
chooser = GTK_EMOJI_CHOOSER (gtk_widget_get_ancestor (section->box, GTK_TYPE_EMOJI_CHOOSER));
adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (chooser->scrolled_window));
if (section->heading)
{
if (!gtk_widget_compute_bounds (section->heading, gtk_widget_get_parent (section->heading), &bounds))
graphene_rect_init (&bounds, 0, 0, 0, 0);
}
gtk_adjustment_animate_to_value (adj, bounds.origin.y - BOX_SPACE);
}
static void
scroll_to_child (GtkWidget *child)
{
GtkEmojiChooser *chooser;
GtkAdjustment *adj;
graphene_point_t p;
double value;
double page_size;
graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 0, 0);
chooser = GTK_EMOJI_CHOOSER (gtk_widget_get_ancestor (child, GTK_TYPE_EMOJI_CHOOSER));
adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (chooser->scrolled_window));
if (!gtk_widget_compute_bounds (child, gtk_widget_get_parent (child), &bounds))
graphene_rect_init (&bounds, 0, 0, 0, 0);
value = gtk_adjustment_get_value (adj);
page_size = gtk_adjustment_get_page_size (adj);
if (!gtk_widget_compute_point (child, gtk_widget_get_parent (chooser->recent.box),
&GRAPHENE_POINT_INIT (0, 0), &p))
return;
if (p.y < value)
gtk_adjustment_animate_to_value (adj, p.y);
else if (p.y + bounds.size.height >= value + page_size)
gtk_adjustment_animate_to_value (adj, value + ((p.y + bounds.size.height) - (value + page_size)));
}
static void
add_emoji (GtkWidget *box,
gboolean prepend,
GVariant *item,
gunichar modifier,
GtkEmojiChooser *chooser);
#define MAX_RECENT (7*3)
static void
populate_recent_section (GtkEmojiChooser *chooser)
{
GVariant *variant;
GVariant *item;
GVariantIter iter;
gboolean empty = TRUE;
variant = g_settings_get_value (chooser->settings, "recently-used-emoji");
g_variant_iter_init (&iter, variant);
while ((item = g_variant_iter_next_value (&iter)))
{
GVariant *emoji_data;
gunichar modifier;
emoji_data = g_variant_get_child_value (item, 0);
g_variant_get_child (item, 1, "u", &modifier);
add_emoji (chooser->recent.box, FALSE, emoji_data, modifier, chooser);
g_variant_unref (emoji_data);
g_variant_unref (item);
empty = FALSE;
}
gtk_widget_set_visible (chooser->recent.box, !empty);
gtk_widget_set_sensitive (chooser->recent.button, !empty);
g_variant_unref (variant);
}
static void
add_recent_item (GtkEmojiChooser *chooser,
GVariant *item,
gunichar modifier)
{
GList *children, *l;
int i;
GVariantBuilder builder;
GtkWidget *child;
g_variant_ref (item);
g_variant_builder_init (&builder, G_VARIANT_TYPE ("a((aussasasu)u)"));
g_variant_builder_add (&builder, "(@(aussasasu)u)", item, modifier);
children = NULL;
for (child = gtk_widget_get_last_child (chooser->recent.box);
child != NULL;
child = gtk_widget_get_prev_sibling (child))
children = g_list_prepend (children, child);
for (l = children, i = 1; l; l = l->next, i++)
{
GVariant *item2 = g_object_get_data (G_OBJECT (l->data), "emoji-data");
gunichar modifier2 = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (l->data), "modifier"));
if (modifier == modifier2 && g_variant_equal (item, item2))
{
gtk_flow_box_remove (GTK_FLOW_BOX (chooser->recent.box), l->data);
i--;
continue;
}
if (i >= MAX_RECENT)
{
gtk_flow_box_remove (GTK_FLOW_BOX (chooser->recent.box), l->data);
continue;
}
g_variant_builder_add (&builder, "(@(aussasasu)u)", item2, modifier2);
}
g_list_free (children);
add_emoji (chooser->recent.box, TRUE, item, modifier, chooser);
/* Enable recent */
gtk_widget_set_visible (chooser->recent.box, TRUE);
gtk_widget_set_sensitive (chooser->recent.button, TRUE);
g_settings_set_value (chooser->settings, "recently-used-emoji", g_variant_builder_end (&builder));
g_variant_unref (item);
}
static gboolean
should_close (GtkEmojiChooser *chooser)
{
GdkDisplay *display;
GdkSeat *seat;
GdkDevice *device;
GdkModifierType state;
display = gtk_widget_get_display (GTK_WIDGET (chooser));
seat = gdk_display_get_default_seat (display);
device = gdk_seat_get_keyboard (seat);
state = gdk_device_get_modifier_state (device);
return (state & GDK_CONTROL_MASK) == 0;
}
static void
emoji_activated (GtkFlowBox *box,
GtkFlowBoxChild *child,
gpointer data)
{
GtkEmojiChooser *chooser = data;
char *text;
GtkWidget *label;
GVariant *item;
gunichar modifier;
if (should_close (chooser))
gtk_popover_popdown (GTK_POPOVER (chooser));
else
{
GtkWidget *popover;
popover = gtk_widget_get_ancestor (GTK_WIDGET (box), GTK_TYPE_POPOVER);
if (popover != GTK_WIDGET (chooser))
gtk_popover_popdown (GTK_POPOVER (popover));
}
label = gtk_flow_box_child_get_child (child);
text = g_strdup (gtk_label_get_label (GTK_LABEL (label)));
item = (GVariant*) g_object_get_data (G_OBJECT (child), "emoji-data");
modifier = (gunichar) GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (child), "modifier"));
if ((GtkWidget *) box != chooser->recent.box)
add_recent_item (chooser, item, modifier);
g_signal_emit (data, signals[EMOJI_PICKED], 0, text);
g_free (text);
}
static gboolean
has_variations (GVariant *emoji_data)
{
GVariant *codes;
gsize i;
gboolean has_variations;
has_variations = FALSE;
codes = g_variant_get_child_value (emoji_data, 0);
for (i = 0; i < g_variant_n_children (codes); i++)
{
gunichar code;
g_variant_get_child (codes, i, "u", &code);
if (code == 0 || code == 0x1f3fb)
{
has_variations = TRUE;
break;
}
}
g_variant_unref (codes);
return has_variations;
}
static void
show_variations (GtkEmojiChooser *chooser,
GtkWidget *child)
{
GtkWidget *popover;
GtkWidget *view;
GtkWidget *box;
GVariant *emoji_data;
GtkWidget *parent_popover;
gunichar modifier;
GtkEmojiChooserChild *ch = (GtkEmojiChooserChild *)child;
if (!child)
return;
emoji_data = (GVariant*) g_object_get_data (G_OBJECT (child), "emoji-data");
if (!emoji_data)
return;
if (!has_variations (emoji_data))
return;
parent_popover = gtk_widget_get_ancestor (child, GTK_TYPE_POPOVER);
g_clear_pointer (&ch->variations, gtk_widget_unparent);
popover = ch->variations = gtk_popover_new ();
gtk_popover_set_autohide (GTK_POPOVER (popover), TRUE);
gtk_widget_set_parent (popover, child);
view = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_widget_add_css_class (view, "view");
box = gtk_flow_box_new ();
gtk_flow_box_set_homogeneous (GTK_FLOW_BOX (box), TRUE);
gtk_flow_box_set_min_children_per_line (GTK_FLOW_BOX (box), 6);
gtk_flow_box_set_max_children_per_line (GTK_FLOW_BOX (box), 6);
gtk_flow_box_set_activate_on_single_click (GTK_FLOW_BOX (box), TRUE);
gtk_flow_box_set_selection_mode (GTK_FLOW_BOX (box), GTK_SELECTION_NONE);
g_object_set (box, "accept-unpaired-release", TRUE, NULL);
gtk_popover_set_child (GTK_POPOVER (popover), view);
gtk_box_append (GTK_BOX (view), box);
g_signal_connect (box, "child-activated", G_CALLBACK (emoji_activated), parent_popover);
add_emoji (box, FALSE, emoji_data, 0, chooser);
for (modifier = 0x1f3fb; modifier <= 0x1f3ff; modifier++)
add_emoji (box, FALSE, emoji_data, modifier, chooser);
gtk_popover_popup (GTK_POPOVER (popover));
}
static void
long_pressed_cb (GtkGesture *gesture,
double x,
double y,
gpointer data)
{
GtkEmojiChooser *chooser = data;
GtkWidget *box;
GtkWidget *child;
box = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture));
child = GTK_WIDGET (gtk_flow_box_get_child_at_pos (GTK_FLOW_BOX (box), x, y));
show_variations (chooser, child);
}
static void
pressed_cb (GtkGesture *gesture,
int n_press,
double x,
double y,
gpointer data)
{
GtkEmojiChooser *chooser = data;
GtkWidget *box;
GtkWidget *child;
box = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture));
child = GTK_WIDGET (gtk_flow_box_get_child_at_pos (GTK_FLOW_BOX (box), x, y));
show_variations (chooser, child);
}
static void
add_emoji (GtkWidget *box,
gboolean prepend,
GVariant *item,
gunichar modifier,
GtkEmojiChooser *chooser)
{
GtkWidget *child;
GtkWidget *label;
PangoAttrList *attrs;
GVariant *codes;
char text[64];
char *p = text;
int i;
PangoLayout *layout;
PangoRectangle rect;
gunichar code = 0;
codes = g_variant_get_child_value (item, 0);
for (i = 0; i < g_variant_n_children (codes); i++)
{
g_variant_get_child (codes, i, "u", &code);
if (code == 0)
code = modifier != 0 ? modifier : 0xfe0f;
if (code == 0x1f3fb)
code = modifier;
if (code != 0)
p += g_unichar_to_utf8 (code, p);
}
g_variant_unref (codes);
p[0] = 0;
label = gtk_label_new (text);
attrs = pango_attr_list_new ();
pango_attr_list_insert (attrs, pango_attr_scale_new (PANGO_SCALE_X_LARGE));
gtk_label_set_attributes (GTK_LABEL (label), attrs);
pango_attr_list_unref (attrs);
layout = gtk_label_get_layout (GTK_LABEL (label));
pango_layout_get_extents (layout, &rect, NULL);
/* Check for fallback rendering that generates too wide items */
if (pango_layout_get_unknown_glyphs_count (layout) > 0 ||
rect.width >= 1.5 * chooser->emoji_max_width)
{
g_object_ref_sink (label);
g_object_unref (label);
return;
}
child = g_object_new (GTK_TYPE_EMOJI_CHOOSER_CHILD, NULL);
g_object_set_data_full (G_OBJECT (child), "emoji-data",
g_variant_ref (item),
(GDestroyNotify)g_variant_unref);
if (modifier != 0)
g_object_set_data (G_OBJECT (child), "modifier", GUINT_TO_POINTER (modifier));
gtk_flow_box_child_set_child (GTK_FLOW_BOX_CHILD (child), label);
gtk_flow_box_insert (GTK_FLOW_BOX (box), child, prepend ? 0 : -1);
}
static GBytes *
get_emoji_data_by_language (const char *lang)
{
GBytes *bytes;
char *path;
GError *error = NULL;
path = g_strconcat ("/org/gtk/libgtk/emoji/", lang, ".data", NULL);
bytes = g_resources_lookup_data (path, 0, &error);
if (bytes)
{
g_debug ("Found emoji data for %s in resource %s", lang, path);
g_free (path);
return bytes;
}
if (g_error_matches (error, G_RESOURCE_ERROR, G_RESOURCE_ERROR_NOT_FOUND))
{
char *filename;
char *gresource_name;
GMappedFile *file;
g_clear_error (&error);
gresource_name = g_strconcat (lang, ".gresource", NULL);
filename = g_build_filename (_gtk_get_data_prefix (), "share", "gtk-4.0",
"emoji", gresource_name, NULL);
g_clear_pointer (&gresource_name, g_free);
file = g_mapped_file_new (filename, FALSE, NULL);
if (file)
{
GBytes *data;
GResource *resource;
data = g_mapped_file_get_bytes (file);
g_mapped_file_unref (file);
resource = g_resource_new_from_data (data, NULL);
g_bytes_unref (data);
g_debug ("Registering resource for Emoji data for %s from file %s", lang, filename);
g_resources_register (resource);
g_resource_unref (resource);
bytes = g_resources_lookup_data (path, 0, NULL);
if (bytes)
{
g_debug ("Found emoji data for %s in resource %s", lang, path);
g_free (path);
g_free (filename);
return bytes;
}
}
g_free (filename);
}
g_clear_error (&error);
g_free (path);
return NULL;
}
GBytes *
get_emoji_data (void)
{
GBytes *bytes;
const char *lang;
lang = pango_language_to_string (gtk_get_default_language ());
bytes = get_emoji_data_by_language (lang);
if (bytes)
return bytes;
if (strchr (lang, '-'))
{
char q[5];
int i;
for (i = 0; lang[i] != '-' && i < 4; i++)
q[i] = lang[i];
q[i] = '\0';
bytes = get_emoji_data_by_language (q);
if (bytes)
return bytes;
}
bytes = get_emoji_data_by_language ("en");
g_assert (bytes);
return bytes;
}
static gboolean
populate_emoji_chooser (gpointer data)
{
GtkEmojiChooser *chooser = data;
GVariant *item;
gint64 start, now;
start = g_get_monotonic_time ();
if (!chooser->data)
{
GBytes *bytes;
bytes = get_emoji_data ();
chooser->data = g_variant_ref_sink (g_variant_new_from_bytes (G_VARIANT_TYPE ("a(aussasasu)"), bytes, TRUE));
g_bytes_unref (bytes);
}
if (!chooser->iter)
{
chooser->iter = g_variant_iter_new (chooser->data);
chooser->box = chooser->people.box;
}
while ((item = g_variant_iter_next_value (chooser->iter)))
{
guint group;
g_variant_get_child (item, 5, "u", &group);
if (group == chooser->people.group)
chooser->box = chooser->people.box;
else if (group == chooser->body.group)
chooser->box = chooser->body.box;
else if (group == chooser->nature.group)
chooser->box = chooser->nature.box;
else if (group == chooser->food.group)
chooser->box = chooser->food.box;
else if (group == chooser->travel.group)
chooser->box = chooser->travel.box;
else if (group == chooser->activities.group)
chooser->box = chooser->activities.box;
else if (group == chooser->objects.group)
chooser->box = chooser->objects.box;
else if (group == chooser->symbols.group)
chooser->box = chooser->symbols.box;
else if (group == chooser->flags.group)
chooser->box = chooser->flags.box;
add_emoji (chooser->box, FALSE, item, 0, chooser);
g_variant_unref (item);
now = g_get_monotonic_time ();
if (now > start + 200) /* 2 ms */
{
gdk_profiler_add_mark (start * 1000, (now - start) * 1000, "Emojichooser populate", NULL);
return G_SOURCE_CONTINUE;
}
}
g_variant_iter_free (chooser->iter);
chooser->iter = NULL;
chooser->box = NULL;
chooser->populate_idle = 0;
gdk_profiler_end_mark (start, "Emojichooser populate (finish)", NULL);
return G_SOURCE_REMOVE;
}
static void
adj_value_changed (GtkAdjustment *adj,
gpointer data)
{
GtkEmojiChooser *chooser = data;
double value = gtk_adjustment_get_value (adj);
EmojiSection const *sections[] = {
&chooser->recent,
&chooser->people,
&chooser->body,
&chooser->nature,
&chooser->food,
&chooser->travel,
&chooser->activities,
&chooser->objects,
&chooser->symbols,
&chooser->flags,
};
EmojiSection const *select_section = sections[0];
gsize i;
/* Figure out which section the current scroll position is within */
for (i = 0; i < G_N_ELEMENTS (sections); ++i)
{
EmojiSection const *section = sections[i];
GtkWidget *child;
graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 0, 0);
if (!gtk_widget_get_visible (section->box))
continue;
if (section->heading)
child = section->heading;
else
child = section->box;
if (!gtk_widget_compute_bounds (child, gtk_widget_get_parent (child), &bounds))
graphene_rect_init (&bounds, 0, 0, 0, 0);
if (value < bounds.origin.y - BOX_SPACE)
break;
select_section = section;
}
/* Un/Check the section buttons accordingly */
for (i = 0; i < G_N_ELEMENTS (sections); ++i)
{
EmojiSection const *section = sections[i];
if (section == select_section)
gtk_widget_set_state_flags (section->button, GTK_STATE_FLAG_CHECKED, FALSE);
else
gtk_widget_unset_state_flags (section->button, GTK_STATE_FLAG_CHECKED);
}
}
static gboolean
match_tokens (const char **term_tokens,
const char **hit_tokens)
{
int i, j;
gboolean matched;
matched = TRUE;
for (i = 0; term_tokens[i]; i++)
{
for (j = 0; hit_tokens[j]; j++)
if (g_str_has_prefix (hit_tokens[j], term_tokens[i]))
goto one_matched;
matched = FALSE;
break;
one_matched:
continue;
}
return matched;
}
static gboolean
filter_func (GtkFlowBoxChild *child,
gpointer data)
{
EmojiSection *section = data;
GtkEmojiChooser *chooser;
GVariant *emoji_data;
const char *text;
const char *name_en;
const char *name;
const char **keywords_en;
const char **keywords;
char **term_tokens;
char **name_tokens_en;
char **name_tokens;
gboolean res;
res = TRUE;
chooser = GTK_EMOJI_CHOOSER (gtk_widget_get_ancestor (GTK_WIDGET (child), GTK_TYPE_EMOJI_CHOOSER));
text = gtk_editable_get_text (GTK_EDITABLE (chooser->search_entry));
emoji_data = (GVariant *) g_object_get_data (G_OBJECT (child), "emoji-data");
if (text[0] == 0)
goto out;
if (!emoji_data)
goto out;
term_tokens = g_str_tokenize_and_fold (text, "en", NULL);
g_variant_get_child (emoji_data, 1, "&s", &name_en);
name_tokens = g_str_tokenize_and_fold (name_en, "en", NULL);
g_variant_get_child (emoji_data, 2, "&s", &name);
name_tokens_en = g_str_tokenize_and_fold (name, "en", NULL);
g_variant_get_child (emoji_data, 3, "^a&s", &keywords_en);
g_variant_get_child (emoji_data, 4, "^a&s", &keywords);
res = match_tokens ((const char **)term_tokens, (const char **)name_tokens) ||
match_tokens ((const char **)term_tokens, (const char **)name_tokens_en) ||
match_tokens ((const char **)term_tokens, keywords) ||
match_tokens ((const char **)term_tokens, keywords_en);
g_strfreev (term_tokens);
g_strfreev (name_tokens);
g_strfreev (name_tokens_en);
out:
if (res)
section->empty = FALSE;
return res;
}
static void
invalidate_section (EmojiSection *section)
{
section->empty = TRUE;
gtk_flow_box_invalidate_filter (GTK_FLOW_BOX (section->box));
}
static void
update_headings (GtkEmojiChooser *chooser)
{
gtk_widget_set_visible (chooser->people.heading, !chooser->people.empty);
gtk_widget_set_visible (chooser->people.box, !chooser->people.empty);
gtk_widget_set_visible (chooser->body.heading, !chooser->body.empty);
gtk_widget_set_visible (chooser->body.box, !chooser->body.empty);
gtk_widget_set_visible (chooser->nature.heading, !chooser->nature.empty);
gtk_widget_set_visible (chooser->nature.box, !chooser->nature.empty);
gtk_widget_set_visible (chooser->food.heading, !chooser->food.empty);
gtk_widget_set_visible (chooser->food.box, !chooser->food.empty);
gtk_widget_set_visible (chooser->travel.heading, !chooser->travel.empty);
gtk_widget_set_visible (chooser->travel.box, !chooser->travel.empty);
gtk_widget_set_visible (chooser->activities.heading, !chooser->activities.empty);
gtk_widget_set_visible (chooser->activities.box, !chooser->activities.empty);
gtk_widget_set_visible (chooser->objects.heading, !chooser->objects.empty);
gtk_widget_set_visible (chooser->objects.box, !chooser->objects.empty);
gtk_widget_set_visible (chooser->symbols.heading, !chooser->symbols.empty);
gtk_widget_set_visible (chooser->symbols.box, !chooser->symbols.empty);
gtk_widget_set_visible (chooser->flags.heading, !chooser->flags.empty);
gtk_widget_set_visible (chooser->flags.box, !chooser->flags.empty);
if (chooser->recent.empty && chooser->people.empty &&
chooser->body.empty && chooser->nature.empty &&
chooser->food.empty && chooser->travel.empty &&
chooser->activities.empty && chooser->objects.empty &&
chooser->symbols.empty && chooser->flags.empty)
gtk_stack_set_visible_child_name (GTK_STACK (chooser->stack), "empty");
else
gtk_stack_set_visible_child_name (GTK_STACK (chooser->stack), "list");
}
static void
search_changed (GtkEntry *entry,
gpointer data)
{
GtkEmojiChooser *chooser = data;
invalidate_section (&chooser->recent);
invalidate_section (&chooser->people);
invalidate_section (&chooser->body);
invalidate_section (&chooser->nature);
invalidate_section (&chooser->food);
invalidate_section (&chooser->travel);
invalidate_section (&chooser->activities);
invalidate_section (&chooser->objects);
invalidate_section (&chooser->symbols);
invalidate_section (&chooser->flags);
update_headings (chooser);
}
static void
stop_search (GtkEntry *entry,
gpointer data)
{
gtk_popover_popdown (GTK_POPOVER (data));
}
static void
setup_section (GtkEmojiChooser *chooser,
EmojiSection *section,
int group,
const char *icon)
{
section->group = group;
gtk_button_set_icon_name (GTK_BUTTON (section->button), icon);
gtk_flow_box_disable_move_cursor (GTK_FLOW_BOX (section->box));
gtk_flow_box_set_filter_func (GTK_FLOW_BOX (section->box), filter_func, section, NULL);
g_signal_connect_swapped (section->button, "clicked", G_CALLBACK (scroll_to_section), section);
}
static void
gtk_emoji_chooser_init (GtkEmojiChooser *chooser)
{
GtkAdjustment *adj;
GtkText *text;
chooser->settings = g_settings_new ("org.gtk.gtk4.Settings.EmojiChooser");
gtk_widget_init_template (GTK_WIDGET (chooser));
text = gtk_search_entry_get_text_widget (GTK_SEARCH_ENTRY (chooser->search_entry));
gtk_text_set_input_hints (text, GTK_INPUT_HINT_NO_EMOJI);
/* Get a reasonable maximum width for an emoji. We do this to
* skip overly wide fallback rendering for certain emojis the
* font does not contain and therefore end up being rendered
* as multiply glyphs.
*/
{
PangoLayout *layout = gtk_widget_create_pango_layout (GTK_WIDGET (chooser), "🙂");
PangoAttrList *attrs;
PangoRectangle rect;
attrs = pango_attr_list_new ();
pango_attr_list_insert (attrs, pango_attr_scale_new (PANGO_SCALE_X_LARGE));
pango_layout_set_attributes (layout, attrs);
pango_attr_list_unref (attrs);
pango_layout_get_extents (layout, &rect, NULL);
chooser->emoji_max_width = rect.width;
g_object_unref (layout);
}
adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (chooser->scrolled_window));
g_signal_connect (adj, "value-changed", G_CALLBACK (adj_value_changed), chooser);
setup_section (chooser, &chooser->recent, -1, "emoji-recent-symbolic");
setup_section (chooser, &chooser->people, 0, "emoji-people-symbolic");
setup_section (chooser, &chooser->body, 1, "emoji-body-symbolic");
setup_section (chooser, &chooser->nature, 3, "emoji-nature-symbolic");
setup_section (chooser, &chooser->food, 4, "emoji-food-symbolic");
setup_section (chooser, &chooser->travel, 5, "emoji-travel-symbolic");
setup_section (chooser, &chooser->activities, 6, "emoji-activities-symbolic");
setup_section (chooser, &chooser->objects, 7, "emoji-objects-symbolic");
setup_section (chooser, &chooser->symbols, 8, "emoji-symbols-symbolic");
setup_section (chooser, &chooser->flags, 9, "emoji-flags-symbolic");
populate_recent_section (chooser);
chooser->populate_idle = g_idle_add (populate_emoji_chooser, chooser);
gdk_source_set_static_name_by_id (chooser->populate_idle, "[gtk] populate_emoji_chooser");
}
static void
gtk_emoji_chooser_show (GtkWidget *widget)
{
GtkEmojiChooser *chooser = GTK_EMOJI_CHOOSER (widget);
GtkAdjustment *adj;
GTK_WIDGET_CLASS (gtk_emoji_chooser_parent_class)->show (widget);
adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (chooser->scrolled_window));
gtk_adjustment_set_value (adj, 0);
adj_value_changed (adj, chooser);
gtk_editable_set_text (GTK_EDITABLE (chooser->search_entry), "");
}
static EmojiSection *
find_section (GtkEmojiChooser *chooser,
GtkWidget *box)
{
if (box == chooser->recent.box)
return &chooser->recent;
else if (box == chooser->people.box)
return &chooser->people;
else if (box == chooser->body.box)
return &chooser->body;
else if (box == chooser->nature.box)
return &chooser->nature;
else if (box == chooser->food.box)
return &chooser->food;
else if (box == chooser->travel.box)
return &chooser->travel;
else if (box == chooser->activities.box)
return &chooser->activities;
else if (box == chooser->objects.box)
return &chooser->objects;
else if (box == chooser->symbols.box)
return &chooser->symbols;
else if (box == chooser->flags.box)
return &chooser->flags;
else
return NULL;
}
static EmojiSection *
find_next_section (GtkEmojiChooser *chooser,
GtkWidget *box,
gboolean down)
{
EmojiSection *next;
if (box == chooser->recent.box)
next = down ? &chooser->people : NULL;
else if (box == chooser->people.box)
next = down ? &chooser->body : &chooser->recent;
else if (box == chooser->body.box)
next = down ? &chooser->nature : &chooser->people;
else if (box == chooser->nature.box)
next = down ? &chooser->food : &chooser->body;
else if (box == chooser->food.box)
next = down ? &chooser->travel : &chooser->nature;
else if (box == chooser->travel.box)
next = down ? &chooser->activities : &chooser->food;
else if (box == chooser->activities.box)
next = down ? &chooser->objects : &chooser->travel;
else if (box == chooser->objects.box)
next = down ? &chooser->symbols : &chooser->activities;
else if (box == chooser->symbols.box)
next = down ? &chooser->flags : &chooser->objects;
else if (box == chooser->flags.box)
next = down ? NULL : &chooser->symbols;
else
next = NULL;
return next;
}
static void
gtk_emoji_chooser_scroll_section (GtkWidget *widget,
const char *action_name,
GVariant *parameter)
{
GtkEmojiChooser *chooser = GTK_EMOJI_CHOOSER (widget);
int direction = g_variant_get_int32 (parameter);
GtkWidget *focus;
GtkWidget *box;
EmojiSection *next;
focus = gtk_root_get_focus (gtk_widget_get_root (widget));
if (focus == NULL)
return;
if (gtk_widget_is_ancestor (focus, chooser->search_entry))
box = chooser->recent.box;
else
box = gtk_widget_get_ancestor (focus, GTK_TYPE_FLOW_BOX);
next = find_next_section (chooser, box, direction > 0);
if (next)
{
gtk_widget_child_focus (next->box, GTK_DIR_TAB_FORWARD);
scroll_to_section (next);
}
}
static gboolean
keynav_failed (GtkWidget *box,
GtkDirectionType direction,
GtkEmojiChooser *chooser)
{
EmojiSection *next;
GtkWidget *focus;
GtkWidget *child;
GtkWidget *sibling;
int i;
int column;
int child_x;
graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 0, 0);
focus = gtk_root_get_focus (gtk_widget_get_root (box));
if (focus == NULL)
return FALSE;
child = gtk_widget_get_ancestor (focus, GTK_TYPE_EMOJI_CHOOSER_CHILD);
column = 0;
child_x = G_MAXINT;
for (sibling = gtk_widget_get_first_child (box);
sibling;
sibling = gtk_widget_get_next_sibling (sibling))
{
if (!gtk_widget_get_child_visible (sibling))
continue;
if (!gtk_widget_compute_bounds (sibling, box, &bounds))
graphene_rect_init (&bounds, 0, 0, 0, 0);
if (bounds.origin.x < child_x)
column = 0;
else
column++;
child_x = (int) bounds.origin.x;
if (sibling == child)
break;
}
if (direction == GTK_DIR_DOWN)
{
next = find_section (chooser, box);
while (TRUE)
{
next = find_next_section (chooser, next->box, TRUE);
if (next == NULL)
return FALSE;
i = 0;
child_x = G_MAXINT;
for (sibling = gtk_widget_get_first_child (next->box);
sibling;
sibling = gtk_widget_get_next_sibling (sibling))
{
if (!gtk_widget_get_child_visible (sibling))
continue;
if (!gtk_widget_compute_bounds (sibling, next->box, &bounds))
graphene_rect_init (&bounds, 0, 0, 0, 0);
if (bounds.origin.x < child_x)
i = 0;
else
i++;
child_x = (int) bounds.origin.x;
if (i == column)
{
gtk_widget_grab_focus (sibling);
return TRUE;
}
}
}
}
else if (direction == GTK_DIR_UP)
{
next = find_section (chooser, box);
while (TRUE)
{
next = find_next_section (chooser, next->box, FALSE);
if (next == NULL)
return FALSE;
i = 0;
child_x = G_MAXINT;
child = NULL;
for (sibling = gtk_widget_get_first_child (next->box);
sibling;
sibling = gtk_widget_get_next_sibling (sibling))
{
if (!gtk_widget_get_child_visible (sibling))
continue;
if (!gtk_widget_compute_bounds (sibling, next->box, &bounds))
graphene_rect_init (&bounds, 0, 0, 0, 0);
if (bounds.origin.x < child_x)
i = 0;
else
i++;
child_x = (int) bounds.origin.x;
if (i == column)
child = sibling;
}
if (child)
{
gtk_widget_grab_focus (child);
return TRUE;
}
}
}
return FALSE;
}
static void
gtk_emoji_chooser_map (GtkWidget *widget)
{
GtkEmojiChooser *chooser = GTK_EMOJI_CHOOSER (widget);
GTK_WIDGET_CLASS (gtk_emoji_chooser_parent_class)->map (widget);
gtk_widget_grab_focus (chooser->search_entry);
}
static void
gtk_emoji_chooser_class_init (GtkEmojiChooserClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->finalize = gtk_emoji_chooser_finalize;
object_class->dispose = gtk_emoji_chooser_dispose;
widget_class->show = gtk_emoji_chooser_show;
widget_class->map = gtk_emoji_chooser_map;
/**
* GtkEmojiChooser::emoji-picked:
* @chooser: the `GtkEmojiChooser`
* @text: the Unicode sequence for the picked Emoji, in UTF-8
*
* Emitted when the user selects an Emoji.
*/
signals[EMOJI_PICKED] = g_signal_new ("emoji-picked",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
NULL,
G_TYPE_NONE, 1, G_TYPE_STRING|G_SIGNAL_TYPE_STATIC_SCOPE);
gtk_widget_class_set_template_from_resource (widget_class, "/org/gtk/libgtk/ui/gtkemojichooser.ui");
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, search_entry);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, stack);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, scrolled_window);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, recent.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, recent.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, people.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, people.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, people.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, body.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, body.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, body.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, nature.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, nature.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, nature.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, food.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, food.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, food.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, travel.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, travel.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, travel.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, activities.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, activities.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, activities.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, objects.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, objects.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, objects.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, symbols.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, symbols.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, symbols.button);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, flags.box);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, flags.heading);
gtk_widget_class_bind_template_child (widget_class, GtkEmojiChooser, flags.button);
gtk_widget_class_bind_template_callback (widget_class, emoji_activated);
gtk_widget_class_bind_template_callback (widget_class, search_changed);
gtk_widget_class_bind_template_callback (widget_class, stop_search);
gtk_widget_class_bind_template_callback (widget_class, pressed_cb);
gtk_widget_class_bind_template_callback (widget_class, long_pressed_cb);
gtk_widget_class_bind_template_callback (widget_class, keynav_failed);
/**
* GtkEmojiChooser|scroll.section:
* @direction: 1 to scroll forward, -1 to scroll back
*
* Scrolls to the next or previous section.
*/
gtk_widget_class_install_action (widget_class, "scroll.section", "i",
gtk_emoji_chooser_scroll_section);
gtk_widget_class_add_binding_action (widget_class, GDK_KEY_n, GDK_CONTROL_MASK,
"scroll.section", "i", 1);
gtk_widget_class_add_binding_action (widget_class, GDK_KEY_p, GDK_CONTROL_MASK,
"scroll.section", "i", -1);
}
/**
* gtk_emoji_chooser_new:
*
* Creates a new `GtkEmojiChooser`.
*
* Returns: a new `GtkEmojiChooser`
*/
GtkWidget *
gtk_emoji_chooser_new (void)
{
return GTK_WIDGET (g_object_new (GTK_TYPE_EMOJI_CHOOSER, NULL));
}
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