cdc5053fd9
This returns TRUE for all css values that always compute to themselves and thus does not need computation. This is useful for the initial values as these are static and we can avoid computing them in a lot of cases.
148 lines
3.7 KiB
C
148 lines
3.7 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2011 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gtkcssenginevalueprivate.h"
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#include "gtkstylepropertyprivate.h"
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struct _GtkCssValue {
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GTK_CSS_VALUE_BASE
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GtkThemingEngine *engine;
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};
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static void
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gtk_css_value_engine_free (GtkCssValue *value)
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{
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g_object_unref (value->engine);
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g_slice_free (GtkCssValue, value);
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}
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static GtkCssValue *
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gtk_css_value_engine_compute (GtkCssValue *value,
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guint property_id,
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GtkStyleProviderPrivate *provider,
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GtkCssComputedValues *values,
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GtkCssComputedValues *parent_values,
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GtkCssDependencies *dependencies)
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{
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return _gtk_css_value_ref (value);
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}
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static gboolean
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gtk_css_value_engine_needs_compute (const GtkCssValue *value)
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{
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return FALSE;
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}
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static gboolean
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gtk_css_value_engine_equal (const GtkCssValue *value1,
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const GtkCssValue *value2)
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{
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return value1->engine == value2->engine;
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}
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static GtkCssValue *
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gtk_css_value_engine_transition (GtkCssValue *start,
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GtkCssValue *end,
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guint property_id,
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double progress)
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{
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return NULL;
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}
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static void
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gtk_css_value_engine_print (const GtkCssValue *value,
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GString *string)
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{
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char *name;
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g_object_get (value->engine, "name", &name, NULL);
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if (name)
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g_string_append (string, name);
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else
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g_string_append (string, "none");
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g_free (name);
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}
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static const GtkCssValueClass GTK_CSS_VALUE_ENGINE = {
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gtk_css_value_engine_free,
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gtk_css_value_engine_compute,
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gtk_css_value_engine_needs_compute,
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gtk_css_value_engine_equal,
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gtk_css_value_engine_transition,
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gtk_css_value_engine_print
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};
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GtkCssValue *
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_gtk_css_engine_value_new (GtkThemingEngine *engine)
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{
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GtkCssValue *result;
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g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
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result = _gtk_css_value_new (GtkCssValue, >K_CSS_VALUE_ENGINE);
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result->engine = g_object_ref (engine);
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return result;
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}
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GtkCssValue *
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_gtk_css_engine_value_parse (GtkCssParser *parser)
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{
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GtkThemingEngine *engine;
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char *str;
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g_return_val_if_fail (parser != NULL, NULL);
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if (_gtk_css_parser_try (parser, "none", TRUE))
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return _gtk_css_engine_value_new (gtk_theming_engine_load (NULL));
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str = _gtk_css_parser_try_ident (parser, TRUE);
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if (str == NULL)
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{
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_gtk_css_parser_error (parser, "Expected a valid theme name");
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return NULL;
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}
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engine = gtk_theming_engine_load (str);
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if (engine == NULL)
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{
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_gtk_css_parser_error (parser, "Theming engine '%s' not found", str);
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g_free (str);
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return NULL;
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}
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g_free (str);
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return _gtk_css_engine_value_new (engine);
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}
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GtkThemingEngine *
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_gtk_css_engine_value_get_engine (const GtkCssValue *value)
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{
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g_return_val_if_fail (value->class == >K_CSS_VALUE_ENGINE, NULL);
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return value->engine;
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}
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