2 * Copyright © 2011 Red Hat Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
17 * Authors: Benjamin Otte <otte@gnome.org>
22 #include "gtkcssstylepropertyprivate.h"
24 #include "gtkcssinheritvalueprivate.h"
25 #include "gtkcssinitialvalueprivate.h"
26 #include "gtkcssstylefuncsprivate.h"
27 #include "gtkcsstypesprivate.h"
29 #include "gtkprivatetypebuiltins.h"
30 #include "gtkstylepropertiesprivate.h"
32 /* this is in case round() is not provided by the compiler,
33 * such as in the case of C89 compilers, like MSVC
35 #include "fallback-c89.c"
45 G_DEFINE_TYPE (GtkCssStyleProperty, _gtk_css_style_property, GTK_TYPE_STYLE_PROPERTY)
48 gtk_css_style_property_constructed (GObject *object)
50 GtkCssStyleProperty *property = GTK_CSS_STYLE_PROPERTY (object);
51 GtkCssStylePropertyClass *klass = GTK_CSS_STYLE_PROPERTY_GET_CLASS (property);
53 property->id = klass->style_properties->len;
54 g_ptr_array_add (klass->style_properties, property);
56 G_OBJECT_CLASS (_gtk_css_style_property_parent_class)->constructed (object);
60 gtk_css_style_property_set_property (GObject *object,
65 GtkCssStyleProperty *property = GTK_CSS_STYLE_PROPERTY (object);
70 property->animated = g_value_get_boolean (value);
73 property->inherit = g_value_get_boolean (value);
76 property->initial_value = g_value_dup_boxed (value);
77 g_assert (property->initial_value != NULL);
80 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
86 gtk_css_style_property_get_property (GObject *object,
91 GtkCssStyleProperty *property = GTK_CSS_STYLE_PROPERTY (object);
96 g_value_set_boolean (value, property->animated);
99 g_value_set_boolean (value, property->id);
102 g_value_set_boolean (value, property->inherit);
105 g_value_set_boxed (value, property->initial_value);
108 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
114 _gtk_css_style_property_assign (GtkStyleProperty *property,
115 GtkStyleProperties *props,
119 GtkCssStyleProperty *style;
120 GtkCssValue *css_value;
122 style = GTK_CSS_STYLE_PROPERTY (property);
123 css_value = style->assign_value (style, value);
125 _gtk_style_properties_set_property_by_property (props,
129 _gtk_css_value_unref (css_value);
133 _gtk_css_style_property_query (GtkStyleProperty *property,
135 GtkStyleQueryFunc query_func,
138 GtkCssStyleProperty *style_property = GTK_CSS_STYLE_PROPERTY (property);
139 GtkCssValue *css_value;
141 css_value = (* query_func) (GTK_CSS_STYLE_PROPERTY (property)->id, query_data);
142 if (css_value == NULL)
143 css_value =_gtk_css_style_property_get_initial_value (style_property);
145 style_property->query_value (style_property, css_value, value);
149 gtk_css_style_property_parse_value (GtkStyleProperty *property,
150 GtkCssParser *parser)
152 GtkCssStyleProperty *style_property = GTK_CSS_STYLE_PROPERTY (property);
154 if (_gtk_css_parser_try (parser, "initial", TRUE))
156 /* the initial value can be explicitly specified with the
157 * ‘initial’ keyword which all properties accept.
159 return _gtk_css_initial_value_new ();
161 else if (_gtk_css_parser_try (parser, "inherit", TRUE))
163 /* All properties accept the ‘inherit’ value which
164 * explicitly specifies that the value will be determined
165 * by inheritance. The ‘inherit’ value can be used to
166 * strengthen inherited values in the cascade, and it can
167 * also be used on properties that are not normally inherited.
169 return _gtk_css_inherit_value_new ();
172 return (* style_property->parse_value) (style_property, parser);
176 _gtk_css_style_property_class_init (GtkCssStylePropertyClass *klass)
178 GObjectClass *object_class = G_OBJECT_CLASS (klass);
179 GtkStylePropertyClass *property_class = GTK_STYLE_PROPERTY_CLASS (klass);
181 object_class->constructed = gtk_css_style_property_constructed;
182 object_class->set_property = gtk_css_style_property_set_property;
183 object_class->get_property = gtk_css_style_property_get_property;
185 g_object_class_install_property (object_class,
187 g_param_spec_boolean ("animated",
189 P_("Set if the value can be animated"),
191 G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
192 g_object_class_install_property (object_class,
194 g_param_spec_uint ("id",
196 P_("The numeric id for quick access"),
199 g_object_class_install_property (object_class,
201 g_param_spec_boolean ("inherit",
203 P_("Set if the value is inherited by default"),
205 G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
206 g_object_class_install_property (object_class,
208 g_param_spec_boxed ("initial-value",
210 P_("The initial specified value used for this property"),
212 G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
214 property_class->assign = _gtk_css_style_property_assign;
215 property_class->query = _gtk_css_style_property_query;
216 property_class->parse_value = gtk_css_style_property_parse_value;
218 klass->style_properties = g_ptr_array_new ();
222 gtk_css_style_property_real_parse_value (GtkCssStyleProperty *property,
223 GtkCssParser *parser)
225 g_assert_not_reached ();
230 _gtk_css_style_property_init (GtkCssStyleProperty *property)
232 property->parse_value = gtk_css_style_property_real_parse_value;
236 * _gtk_css_style_property_get_n_properties:
238 * Gets the number of style properties. This number can increase when new
239 * theme engines are loaded. Shorthand properties are not included here.
241 * Returns: The number of style properties.
244 _gtk_css_style_property_get_n_properties (void)
246 GtkCssStylePropertyClass *klass;
248 klass = g_type_class_peek (GTK_TYPE_CSS_STYLE_PROPERTY);
249 if (G_UNLIKELY (klass == NULL))
251 _gtk_style_property_init_properties ();
252 klass = g_type_class_peek (GTK_TYPE_CSS_STYLE_PROPERTY);
256 return klass->style_properties->len;
260 * _gtk_css_style_property_lookup_by_id:
261 * @id: the id of the property
263 * Gets the style property with the given id. All style properties (but not
264 * shorthand properties) are indexable by id so that it's easy to use arrays
265 * when doing style lookups.
267 * Returns: (transfer none): The style property with the given id
269 GtkCssStyleProperty *
270 _gtk_css_style_property_lookup_by_id (guint id)
272 GtkCssStylePropertyClass *klass;
274 klass = g_type_class_peek (GTK_TYPE_CSS_STYLE_PROPERTY);
275 if (G_UNLIKELY (klass == NULL))
277 _gtk_style_property_init_properties ();
278 klass = g_type_class_peek (GTK_TYPE_CSS_STYLE_PROPERTY);
281 g_return_val_if_fail (id < klass->style_properties->len, NULL);
283 return g_ptr_array_index (klass->style_properties, id);
287 * _gtk_css_style_property_is_inherit:
288 * @property: the property
290 * Queries if the given @property is inherited. See
291 * <ulink url="http://www.w3.org/TR/css3-cascade/#inheritance>
292 * the CSS documentation</ulink> for an explanation of this concept.
294 * Returns: %TRUE if the property is inherited by default.
297 _gtk_css_style_property_is_inherit (GtkCssStyleProperty *property)
299 g_return_val_if_fail (GTK_IS_CSS_STYLE_PROPERTY (property), FALSE);
301 return property->inherit;
305 * _gtk_css_style_property_is_animated:
306 * @property: the property
308 * Queries if the given @property can be is animated. See
309 * <ulink url="http://www.w3.org/TR/css3-transitions/#animatable-css>
310 * the CSS documentation</ulink> for animatable properties.
312 * Returns: %TRUE if the property can be animated.
315 _gtk_css_style_property_is_animated (GtkCssStyleProperty *property)
317 g_return_val_if_fail (GTK_IS_CSS_STYLE_PROPERTY (property), FALSE);
319 return property->animated;
323 * _gtk_css_style_property_get_id:
324 * @property: the property
326 * Gets the id for the given property. IDs are used to allow using arrays
329 * Returns: The id of the property
332 _gtk_css_style_property_get_id (GtkCssStyleProperty *property)
334 g_return_val_if_fail (GTK_IS_CSS_STYLE_PROPERTY (property), 0);
340 * _gtk_css_style_property_get_initial_value:
341 * @property: the property
343 * Queries the initial value of the given @property. See
344 * <ulink url="http://www.w3.org/TR/css3-cascade/#intial>
345 * the CSS documentation</ulink> for an explanation of this concept.
347 * Returns: a reference to the initial value. The value will never change.
350 _gtk_css_style_property_get_initial_value (GtkCssStyleProperty *property)
352 g_return_val_if_fail (GTK_IS_CSS_STYLE_PROPERTY (property), NULL);
354 return property->initial_value;