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 "gtkcssenumvalueprivate.h"
25 #include "gtkcssinheritvalueprivate.h"
26 #include "gtkcssinitialvalueprivate.h"
27 #include "gtkcssstylefuncsprivate.h"
28 #include "gtkcsstypesprivate.h"
30 #include "gtkprivatetypebuiltins.h"
31 #include "gtkstylepropertiesprivate.h"
33 /* this is in case round() is not provided by the compiler,
34 * such as in the case of C89 compilers, like MSVC
36 #include "fallback-c89.c"
48 G_DEFINE_TYPE (GtkCssStyleProperty, _gtk_css_style_property, GTK_TYPE_STYLE_PROPERTY)
50 static GtkBitmask *_properties_affecting_size = NULL;
51 static GtkBitmask *_properties_affecting_font = NULL;
53 static GtkCssStylePropertyClass *gtk_css_style_property_class = NULL;
56 gtk_css_style_property_constructed (GObject *object)
58 GtkCssStyleProperty *property = GTK_CSS_STYLE_PROPERTY (object);
59 GtkCssStylePropertyClass *klass = GTK_CSS_STYLE_PROPERTY_GET_CLASS (property);
61 property->id = klass->style_properties->len;
62 g_ptr_array_add (klass->style_properties, property);
64 if (property->affects_size)
65 _properties_affecting_size = _gtk_bitmask_set (_properties_affecting_size, property->id, TRUE);
67 if (property->affects_font)
68 _properties_affecting_font = _gtk_bitmask_set (_properties_affecting_font, property->id, TRUE);
70 G_OBJECT_CLASS (_gtk_css_style_property_parent_class)->constructed (object);
74 gtk_css_style_property_set_property (GObject *object,
79 GtkCssStyleProperty *property = GTK_CSS_STYLE_PROPERTY (object);
84 property->animated = g_value_get_boolean (value);
86 case PROP_AFFECTS_SIZE:
87 property->affects_size = g_value_get_boolean (value);
89 case PROP_AFFECTS_FONT:
90 property->affects_font = g_value_get_boolean (value);
93 property->inherit = g_value_get_boolean (value);
96 property->initial_value = g_value_dup_boxed (value);
97 g_assert (property->initial_value != NULL);
100 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
106 gtk_css_style_property_get_property (GObject *object,
111 GtkCssStyleProperty *property = GTK_CSS_STYLE_PROPERTY (object);
116 g_value_set_boolean (value, property->animated);
118 case PROP_AFFECTS_SIZE:
119 g_value_set_boolean (value, property->affects_size);
121 case PROP_AFFECTS_FONT:
122 g_value_set_boolean (value, property->affects_font);
125 g_value_set_boolean (value, property->id);
128 g_value_set_boolean (value, property->inherit);
131 g_value_set_boxed (value, property->initial_value);
134 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
140 _gtk_css_style_property_assign (GtkStyleProperty *property,
141 GtkStyleProperties *props,
145 GtkCssStyleProperty *style;
146 GtkCssValue *css_value;
148 style = GTK_CSS_STYLE_PROPERTY (property);
149 css_value = style->assign_value (style, value);
151 _gtk_style_properties_set_property_by_property (props,
155 _gtk_css_value_unref (css_value);
159 _gtk_css_style_property_query_special_case (GtkCssStyleProperty *property,
161 GtkStyleQueryFunc query_func,
164 GtkBorderStyle border_style;
166 switch (property->id)
168 case GTK_CSS_PROPERTY_BORDER_TOP_WIDTH:
169 border_style = _gtk_css_border_style_value_get (query_func (GTK_CSS_PROPERTY_BORDER_TOP_STYLE, query_data));
170 if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
172 g_value_init (value, G_TYPE_INT);
176 case GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH:
177 border_style = _gtk_css_border_style_value_get (query_func (GTK_CSS_PROPERTY_BORDER_RIGHT_STYLE, query_data));
178 if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
180 g_value_init (value, G_TYPE_INT);
184 case GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH:
185 border_style = _gtk_css_border_style_value_get (query_func (GTK_CSS_PROPERTY_BORDER_BOTTOM_STYLE, query_data));
186 if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
188 g_value_init (value, G_TYPE_INT);
192 case GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH:
193 border_style = _gtk_css_border_style_value_get (query_func (GTK_CSS_PROPERTY_BORDER_LEFT_STYLE, query_data));
194 if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
196 g_value_init (value, G_TYPE_INT);
200 case GTK_CSS_PROPERTY_OUTLINE_WIDTH:
201 border_style = _gtk_css_border_style_value_get (query_func (GTK_CSS_PROPERTY_OUTLINE_STYLE, query_data));
202 if (border_style == GTK_BORDER_STYLE_NONE || border_style == GTK_BORDER_STYLE_HIDDEN)
204 g_value_init (value, G_TYPE_INT);
216 _gtk_css_style_property_query (GtkStyleProperty *property,
218 GtkStyleQueryFunc query_func,
221 GtkCssStyleProperty *style_property = GTK_CSS_STYLE_PROPERTY (property);
222 GtkCssValue *css_value;
224 /* I don't like this special case being here in this generic code path, but no idea where else to put it. */
225 if (_gtk_css_style_property_query_special_case (style_property, value, query_func, query_data))
228 css_value = (* query_func) (GTK_CSS_STYLE_PROPERTY (property)->id, query_data);
229 if (css_value == NULL)
230 css_value =_gtk_css_style_property_get_initial_value (style_property);
232 style_property->query_value (style_property, css_value, value);
236 gtk_css_style_property_parse_value (GtkStyleProperty *property,
237 GtkCssParser *parser)
239 GtkCssStyleProperty *style_property = GTK_CSS_STYLE_PROPERTY (property);
241 if (_gtk_css_parser_try (parser, "initial", TRUE))
243 /* the initial value can be explicitly specified with the
244 * ‘initial’ keyword which all properties accept.
246 return _gtk_css_initial_value_new ();
248 else if (_gtk_css_parser_try (parser, "inherit", TRUE))
250 /* All properties accept the ‘inherit’ value which
251 * explicitly specifies that the value will be determined
252 * by inheritance. The ‘inherit’ value can be used to
253 * strengthen inherited values in the cascade, and it can
254 * also be used on properties that are not normally inherited.
256 return _gtk_css_inherit_value_new ();
259 return (* style_property->parse_value) (style_property, parser);
263 _gtk_css_style_property_class_init (GtkCssStylePropertyClass *klass)
265 GObjectClass *object_class = G_OBJECT_CLASS (klass);
266 GtkStylePropertyClass *property_class = GTK_STYLE_PROPERTY_CLASS (klass);
268 object_class->constructed = gtk_css_style_property_constructed;
269 object_class->set_property = gtk_css_style_property_set_property;
270 object_class->get_property = gtk_css_style_property_get_property;
272 g_object_class_install_property (object_class,
274 g_param_spec_boolean ("animated",
276 P_("Set if the value can be animated"),
278 G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
279 g_object_class_install_property (object_class,
281 g_param_spec_boolean ("affects-size",
283 P_("Set if the value affects the sizing of elements"),
285 G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
286 g_object_class_install_property (object_class,
288 g_param_spec_boolean ("affects-font",
290 P_("Set if the value affects the font"),
292 G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
293 g_object_class_install_property (object_class,
295 g_param_spec_uint ("id",
297 P_("The numeric id for quick access"),
300 g_object_class_install_property (object_class,
302 g_param_spec_boolean ("inherit",
304 P_("Set if the value is inherited by default"),
306 G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
307 g_object_class_install_property (object_class,
309 g_param_spec_boxed ("initial-value",
311 P_("The initial specified value used for this property"),
313 G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
315 property_class->assign = _gtk_css_style_property_assign;
316 property_class->query = _gtk_css_style_property_query;
317 property_class->parse_value = gtk_css_style_property_parse_value;
319 klass->style_properties = g_ptr_array_new ();
321 _properties_affecting_size = _gtk_bitmask_new ();
322 _properties_affecting_font = _gtk_bitmask_new ();
324 gtk_css_style_property_class = klass;
328 gtk_css_style_property_real_parse_value (GtkCssStyleProperty *property,
329 GtkCssParser *parser)
331 g_assert_not_reached ();
336 _gtk_css_style_property_init (GtkCssStyleProperty *property)
338 property->parse_value = gtk_css_style_property_real_parse_value;
342 * _gtk_css_style_property_get_n_properties:
344 * Gets the number of style properties. This number can increase when new
345 * theme engines are loaded. Shorthand properties are not included here.
347 * Returns: The number of style properties.
350 _gtk_css_style_property_get_n_properties (void)
352 if (G_UNLIKELY (gtk_css_style_property_class == NULL))
354 _gtk_style_property_init_properties ();
355 g_assert (gtk_css_style_property_class);
358 return gtk_css_style_property_class->style_properties->len;
362 * _gtk_css_style_property_lookup_by_id:
363 * @id: the id of the property
365 * Gets the style property with the given id. All style properties (but not
366 * shorthand properties) are indexable by id so that it's easy to use arrays
367 * when doing style lookups.
369 * Returns: (transfer none): The style property with the given id
371 GtkCssStyleProperty *
372 _gtk_css_style_property_lookup_by_id (guint id)
375 if (G_UNLIKELY (gtk_css_style_property_class == NULL))
377 _gtk_style_property_init_properties ();
378 g_assert (gtk_css_style_property_class);
381 g_return_val_if_fail (id < gtk_css_style_property_class->style_properties->len, NULL);
383 return g_ptr_array_index (gtk_css_style_property_class->style_properties, id);
387 * _gtk_css_style_property_is_inherit:
388 * @property: the property
390 * Queries if the given @property is inherited. See
391 * <ulink url="http://www.w3.org/TR/css3-cascade/#inheritance>
392 * the CSS documentation</ulink> for an explanation of this concept.
394 * Returns: %TRUE if the property is inherited by default.
397 _gtk_css_style_property_is_inherit (GtkCssStyleProperty *property)
399 g_return_val_if_fail (GTK_IS_CSS_STYLE_PROPERTY (property), FALSE);
401 return property->inherit;
405 * _gtk_css_style_property_is_animated:
406 * @property: the property
408 * Queries if the given @property can be is animated. See
409 * <ulink url="http://www.w3.org/TR/css3-transitions/#animatable-css>
410 * the CSS documentation</ulink> for animatable properties.
412 * Returns: %TRUE if the property can be animated.
415 _gtk_css_style_property_is_animated (GtkCssStyleProperty *property)
417 g_return_val_if_fail (GTK_IS_CSS_STYLE_PROPERTY (property), FALSE);
419 return property->animated;
423 * _gtk_css_style_property_affects_size:
424 * @property: the property
426 * Queries if the given @property affects the size of elements. This is
427 * used for optimizations inside GTK, where a gtk_widget_queue_resize()
428 * can be avoided if the property does not affect size.
430 * Returns: %TRUE if the property affects sizing of elements.
433 _gtk_css_style_property_affects_size (GtkCssStyleProperty *property)
435 g_return_val_if_fail (GTK_IS_CSS_STYLE_PROPERTY (property), FALSE);
437 return property->affects_size;
441 * _gtk_css_style_property_affects_font:
442 * @property: the property
444 * Queries if the given @property affects the default font. This is
445 * used for optimizations inside GTK, where clearing pango
446 * layouts can be avoided if the font doesn't change.
448 * Returns: %TRUE if the property affects the font.
451 _gtk_css_style_property_affects_font (GtkCssStyleProperty *property)
453 g_return_val_if_fail (GTK_IS_CSS_STYLE_PROPERTY (property), FALSE);
455 return property->affects_font;
459 * _gtk_css_style_property_get_id:
460 * @property: the property
462 * Gets the id for the given property. IDs are used to allow using arrays
465 * Returns: The id of the property
468 _gtk_css_style_property_get_id (GtkCssStyleProperty *property)
470 g_return_val_if_fail (GTK_IS_CSS_STYLE_PROPERTY (property), 0);
476 * _gtk_css_style_property_get_initial_value:
477 * @property: the property
479 * Queries the initial value of the given @property. See
480 * <ulink url="http://www.w3.org/TR/css3-cascade/#intial>
481 * the CSS documentation</ulink> for an explanation of this concept.
483 * Returns: a reference to the initial value. The value will never change.
486 _gtk_css_style_property_get_initial_value (GtkCssStyleProperty *property)
488 g_return_val_if_fail (GTK_IS_CSS_STYLE_PROPERTY (property), NULL);
490 return property->initial_value;
494 _gtk_css_style_property_changes_affect_size (const GtkBitmask *changes)
496 return _gtk_bitmask_intersects (changes, _properties_affecting_size);
500 _gtk_css_style_property_changes_affect_font (const GtkBitmask *changes)
502 return _gtk_bitmask_intersects (changes, _properties_affecting_font);