forked from AuroraMiddleware/gtk
261 lines
8.0 KiB
C
261 lines
8.0 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
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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 "gtkstylepropertyprivate.h"
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#include "gtkcssprovider.h"
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#include "gtkcssparserprivate.h"
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#include "gtkcssshorthandpropertyprivate.h"
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#include "gtkcssstylepropertyprivate.h"
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#include "gtkcsstypesprivate.h"
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#include "gtkintl.h"
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#include "gtkprivatetypebuiltins.h"
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enum {
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PROP_0,
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PROP_NAME,
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PROP_VALUE_TYPE
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};
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G_DEFINE_ABSTRACT_TYPE (GtkStyleProperty, _gtk_style_property, G_TYPE_OBJECT)
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static void
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gtk_style_property_finalize (GObject *object)
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{
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GtkStyleProperty *property = GTK_STYLE_PROPERTY (object);
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g_warning ("finalizing %s '%s', how could this happen?", G_OBJECT_TYPE_NAME (object), property->name);
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G_OBJECT_CLASS (_gtk_style_property_parent_class)->finalize (object);
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}
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static void
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gtk_style_property_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkStyleProperty *property = GTK_STYLE_PROPERTY (object);
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GtkStylePropertyClass *klass = GTK_STYLE_PROPERTY_GET_CLASS (property);
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switch (prop_id)
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{
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case PROP_NAME:
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property->name = g_value_dup_string (value);
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g_assert (property->name);
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g_assert (g_hash_table_lookup (klass->properties, property->name) == NULL);
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g_hash_table_insert (klass->properties, property->name, property);
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break;
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case PROP_VALUE_TYPE:
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property->value_type = g_value_get_gtype (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_style_property_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkStyleProperty *property = GTK_STYLE_PROPERTY (object);
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switch (prop_id)
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{
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case PROP_NAME:
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g_value_set_string (value, property->name);
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break;
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case PROP_VALUE_TYPE:
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g_value_set_gtype (value, property->value_type);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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_gtk_style_property_class_init (GtkStylePropertyClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = gtk_style_property_finalize;
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object_class->set_property = gtk_style_property_set_property;
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object_class->get_property = gtk_style_property_get_property;
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g_object_class_install_property (object_class,
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PROP_NAME,
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g_param_spec_string ("name",
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P_("Property name"),
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P_("The name of the property"),
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NULL,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
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g_object_class_install_property (object_class,
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PROP_VALUE_TYPE,
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g_param_spec_gtype ("value-type",
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P_("Value type"),
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P_("The value type returned by GtkStyleContext"),
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G_TYPE_NONE,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
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klass->properties = g_hash_table_new (g_str_hash, g_str_equal);
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}
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static void
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_gtk_style_property_init (GtkStyleProperty *property)
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{
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property->value_type = G_TYPE_NONE;
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}
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/**
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* _gtk_style_property_parse_value:
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* @property: the property
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* @parser: the parser to parse from
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*
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* Tries to parse the given @property from the given @parser into
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* @value. The type that @value will be assigned is dependant on
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* the parser and no assumptions must be made about it. If the
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* parsing fails, %FALSE will be returned and @value will be
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* left uninitialized.
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*
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* Only if @property is a #GtkCssShorthandProperty, the @value will
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* always be a #GtkCssValue whose values can be queried with
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* _gtk_css_array_value_get_nth().
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*
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* Returns: %NULL on failure or the parsed #GtkCssValue
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**/
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GtkCssValue *
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_gtk_style_property_parse_value (GtkStyleProperty *property,
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GtkCssParser *parser)
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{
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GtkStylePropertyClass *klass;
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g_return_val_if_fail (GTK_IS_STYLE_PROPERTY (property), NULL);
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g_return_val_if_fail (parser != NULL, NULL);
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klass = GTK_STYLE_PROPERTY_GET_CLASS (property);
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return klass->parse_value (property, parser);
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}
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/**
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* _gtk_style_property_query:
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* @property: the property
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* @value: (out): an uninitialized #GValue to be filled with the
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* contents of the lookup
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* @query_func: The function to use to query properties
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* @query_data: The data to pass to @query_func
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*
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* This function is called by gtk_style_properties_get() and in
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* turn gtk_style_context_get() and similar functions to get the
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* value to return to code using old APIs.
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**/
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void
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_gtk_style_property_query (GtkStyleProperty *property,
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GValue *value,
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GtkStyleQueryFunc query_func,
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gpointer query_data)
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{
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GtkStylePropertyClass *klass;
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g_return_if_fail (value != NULL);
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g_return_if_fail (GTK_IS_STYLE_PROPERTY (property));
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g_return_if_fail (query_func != NULL);
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klass = GTK_STYLE_PROPERTY_GET_CLASS (property);
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klass->query (property, value, query_func, query_data);
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}
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void
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_gtk_style_property_init_properties (void)
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{
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static gboolean initialized = FALSE;
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if (G_LIKELY (initialized))
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return;
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initialized = TRUE;
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_gtk_css_style_property_init_properties ();
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/* initialize shorthands last, they depend on the real properties existing */
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_gtk_css_shorthand_property_init_properties ();
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}
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/**
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* _gtk_style_property_lookup:
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* @name: name of the property to lookup
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*
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* Looks up the CSS property with the given @name. If no such
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* property exists, %NULL is returned.
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*
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* Returns: (nullable) (transfer none): The property or %NULL if no
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* property with the given name exists.
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**/
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GtkStyleProperty *
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_gtk_style_property_lookup (const char *name)
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{
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GtkStylePropertyClass *klass;
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g_return_val_if_fail (name != NULL, NULL);
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_gtk_style_property_init_properties ();
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klass = g_type_class_peek (GTK_TYPE_STYLE_PROPERTY);
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return g_hash_table_lookup (klass->properties, name);
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}
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/**
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* _gtk_style_property_get_name:
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* @property: the property to query
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*
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* Gets the name of the given property.
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*
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* Returns: the name of the property
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**/
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const char *
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_gtk_style_property_get_name (GtkStyleProperty *property)
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{
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g_return_val_if_fail (GTK_IS_STYLE_PROPERTY (property), NULL);
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return property->name;
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}
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/**
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* _gtk_style_property_get_value_type:
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* @property: the property to query
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*
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* Gets the value type of the @property, if the property is usable
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* in public API via _gtk_style_property_query(). If the @property is not
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* usable in that way, %G_TYPE_NONE is returned.
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*
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* Returns: the value type in use or %G_TYPE_NONE if none.
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**/
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GType
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_gtk_style_property_get_value_type (GtkStyleProperty *property)
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{
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g_return_val_if_fail (GTK_IS_STYLE_PROPERTY (property), G_TYPE_NONE);
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return property->value_type;
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}
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