1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
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 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/>.
23 #include <gobject/gvaluecollector.h>
25 #include "gtkstylecontextprivate.h"
26 #include "gtkcontainerprivate.h"
27 #include "gtkcssanimatedvaluesprivate.h"
28 #include "gtkcssenginevalueprivate.h"
29 #include "gtkcssnumbervalueprivate.h"
30 #include "gtkcssrgbavalueprivate.h"
32 #include "gtkstylepropertiesprivate.h"
33 #include "gtktypebuiltins.h"
34 #include "gtkthemingengineprivate.h"
36 #include "gtkwidget.h"
37 #include "gtkwindow.h"
38 #include "gtkprivate.h"
39 #include "gtksymboliccolorprivate.h"
40 #include "gtkiconfactory.h"
41 #include "gtkwidgetpath.h"
42 #include "gtkwidgetprivate.h"
43 #include "gtkstylecascadeprivate.h"
44 #include "gtkstyleproviderprivate.h"
45 #include "gtksettings.h"
46 #include "gtksettingsprivate.h"
49 * SECTION:gtkstylecontext
50 * @Short_description: Rendering UI elements
51 * @Title: GtkStyleContext
53 * #GtkStyleContext is an object that stores styling information affecting
54 * a widget defined by #GtkWidgetPath.
56 * In order to construct the final style information, #GtkStyleContext
57 * queries information from all attached #GtkStyleProviders. Style providers
58 * can be either attached explicitly to the context through
59 * gtk_style_context_add_provider(), or to the screen through
60 * gtk_style_context_add_provider_for_screen(). The resulting style is a
61 * combination of all providers' information in priority order.
63 * For GTK+ widgets, any #GtkStyleContext returned by
64 * gtk_widget_get_style_context() will already have a #GtkWidgetPath, a
65 * #GdkScreen and RTL/LTR information set. The style context will be also
66 * updated automatically if any of these settings change on the widget.
68 * If you are using the theming layer standalone, you will need to set a
69 * widget path and a screen yourself to the created style context through
70 * gtk_style_context_set_path() and gtk_style_context_set_screen(), as well
71 * as updating the context yourself using gtk_style_context_invalidate()
72 * whenever any of the conditions change, such as a change in the
73 * #GtkSettings:gtk-theme-name setting or a hierarchy change in the rendered
76 * <refsect2 id="gtkstylecontext-animations">
77 * <title>Transition animations</title>
79 * #GtkStyleContext has built-in support for state change transitions.
80 * Note that these animations respect the #GtkSettings:gtk-enable-animations
84 * For simple widgets where state changes affect the whole widget area,
85 * calling gtk_style_context_notify_state_change() with a %NULL region
86 * is sufficient to trigger the transition animation. And GTK+ already
87 * does that when gtk_widget_set_state() or gtk_widget_set_state_flags()
91 * If a widget needs to declare several animatable regions (i.e. not
92 * affecting the whole widget area), its #GtkWidget::draw signal handler
93 * needs to wrap the render operations for the different regions with
94 * calls to gtk_style_context_push_animatable_region() and
95 * gtk_style_context_pop_animatable_region(). These functions take an
96 * identifier for the region which must be unique within the style context.
97 * For simple widgets with a fixed set of animatable regions, using an
98 * enumeration works well:
101 * <title>Using an enumeration to identify animatable regions</title>
112 * spin_button_draw (GtkWidget *widget,
115 * GtkStyleContext *context;
117 * context = gtk_widget_get_style_context (widget);
119 * gtk_style_context_push_animatable_region (context,
120 * GUINT_TO_POINTER (REGION_ENTRY));
122 * gtk_render_background (cr, 0, 0, 100, 30);
123 * gtk_render_frame (cr, 0, 0, 100, 30);
125 * gtk_style_context_pop_animatable_region (context);
132 * For complex widgets with an arbitrary number of animatable regions, it
133 * is up to the implementation to come up with a way to uniquely identify
134 * each animatable region. Using pointers to internal structs is one way
138 * <title>Using struct pointers to identify animatable regions</title>
141 * notebook_draw_tab (GtkWidget *widget,
142 * NotebookPage *page,
145 * gtk_style_context_push_animatable_region (context, page);
146 * gtk_render_extension (cr, page->x, page->y, page->width, page->height);
147 * gtk_style_context_pop_animatable_region (context);
152 * The widget also needs to notify the style context about a state change
153 * for a given animatable region so the animation is triggered.
156 * <title>Triggering a state change animation on a region</title>
159 * notebook_motion_notify (GtkWidget *widget,
160 * GdkEventMotion *event)
162 * GtkStyleContext *context;
163 * NotebookPage *page;
165 * context = gtk_widget_get_style_context (widget);
166 * page = find_page_under_pointer (widget, event);
167 * gtk_style_context_notify_state_change (context,
168 * gtk_widget_get_window (widget),
170 * GTK_STATE_PRELIGHT,
177 * gtk_style_context_notify_state_change() accepts %NULL region IDs as a
178 * special value, in this case, the whole widget area will be updated
182 * <refsect2 id="gtkstylecontext-classes">
183 * <title>Style classes and regions</title>
185 * Widgets can add style classes to their context, which can be used
186 * to associate different styles by class (see <xref linkend="gtkcssprovider-selectors"/>). Theme engines can also use style classes to vary their
187 * rendering. GTK+ has a number of predefined style classes:
188 * #GTK_STYLE_CLASS_CELL,
189 * #GTK_STYLE_CLASS_ENTRY,
190 * #GTK_STYLE_CLASS_BUTTON,
191 * #GTK_STYLE_CLASS_COMBOBOX_ENTRY,
192 * #GTK_STYLE_CLASS_CALENDAR,
193 * #GTK_STYLE_CLASS_SLIDER,
194 * #GTK_STYLE_CLASS_BACKGROUND,
195 * #GTK_STYLE_CLASS_RUBBERBAND,
196 * #GTK_STYLE_CLASS_TOOLTIP,
197 * #GTK_STYLE_CLASS_MENU,
198 * #GTK_STYLE_CLASS_MENUBAR,
199 * #GTK_STYLE_CLASS_MENUITEM,
200 * #GTK_STYLE_CLASS_TOOLBAR,
201 * #GTK_STYLE_CLASS_PRIMARY_TOOLBAR,
202 * #GTK_STYLE_CLASS_INLINE_TOOLBAR,
203 * #GTK_STYLE_CLASS_RADIO,
204 * #GTK_STYLE_CLASS_CHECK,
205 * #GTK_STYLE_CLASS_TROUGH,
206 * #GTK_STYLE_CLASS_SCROLLBAR,
207 * #GTK_STYLE_CLASS_SCALE,
208 * #GTK_STYLE_CLASS_SCALE_HAS_MARKS_ABOVE,
209 * #GTK_STYLE_CLASS_SCALE_HAS_MARKS_BELOW,
210 * #GTK_STYLE_CLASS_HEADER,
211 * #GTK_STYLE_CLASS_ACCELERATOR,
212 * #GTK_STYLE_CLASS_GRIP,
213 * #GTK_STYLE_CLASS_DOCK,
214 * #GTK_STYLE_CLASS_PROGRESSBAR,
215 * #GTK_STYLE_CLASS_SPINNER,
216 * #GTK_STYLE_CLASS_EXPANDER,
217 * #GTK_STYLE_CLASS_SPINBUTTON,
218 * #GTK_STYLE_CLASS_NOTEBOOK,
219 * #GTK_STYLE_CLASS_VIEW,
220 * #GTK_STYLE_CLASS_SIDEBAR,
221 * #GTK_STYLE_CLASS_IMAGE,
222 * #GTK_STYLE_CLASS_HIGHLIGHT,
223 * #GTK_STYLE_CLASS_FRAME,
224 * #GTK_STYLE_CLASS_DND,
225 * #GTK_STYLE_CLASS_PANE_SEPARATOR,
226 * #GTK_STYLE_CLASS_SEPARATOR,
227 * #GTK_STYLE_CLASS_INFO,
228 * #GTK_STYLE_CLASS_WARNING,
229 * #GTK_STYLE_CLASS_QUESTION,
230 * #GTK_STYLE_CLASS_ERROR,
231 * #GTK_STYLE_CLASS_HORIZONTAL,
232 * #GTK_STYLE_CLASS_VERTICAL,
233 * #GTK_STYLE_CLASS_TOP,
234 * #GTK_STYLE_CLASS_BOTTOM,
235 * #GTK_STYLE_CLASS_LEFT,
236 * #GTK_STYLE_CLASS_RIGHT,
239 * Widgets can also add regions with flags to their context.
240 * The regions used by GTK+ widgets are:
245 * <entry>Region</entry>
246 * <entry>Flags</entry>
247 * <entry>Macro</entry>
248 * <entry>Used by</entry>
254 * <entry>even, odd</entry>
255 * <entry>GTK_STYLE_REGION_ROW</entry>
256 * <entry>#GtkTreeView</entry>
259 * <entry>column</entry>
260 * <entry>first, last, sorted</entry>
261 * <entry>GTK_STYLE_REGION_COLUMN</entry>
262 * <entry>#GtkTreeView</entry>
265 * <entry>column-header</entry>
267 * <entry>GTK_STYLE_REGION_COLUMN_HEADER</entry>
272 * <entry>even, odd, first, last</entry>
273 * <entry>GTK_STYLE_REGION_TAB</entry>
274 * <entry>#GtkNotebook</entry>
281 * <refsect2 id="gtkstylecontext-custom-styling">
282 * <title>Custom styling in UI libraries and applications</title>
284 * If you are developing a library with custom #GtkWidget<!-- -->s that
285 * render differently than standard components, you may need to add a
286 * #GtkStyleProvider yourself with the %GTK_STYLE_PROVIDER_PRIORITY_FALLBACK
287 * priority, either a #GtkCssProvider or a custom object implementing the
288 * #GtkStyleProvider interface. This way theming engines may still attempt
289 * to style your UI elements in a different way if needed so.
292 * If you are using custom styling on an applications, you probably want then
293 * to make your style information prevail to the theme's, so you must use
294 * a #GtkStyleProvider with the %GTK_STYLE_PROVIDER_PRIORITY_APPLICATION
295 * priority, keep in mind that the user settings in
296 * <filename><replaceable>XDG_CONFIG_HOME</replaceable>/gtk-3.0/gtk.css</filename> will
297 * still take precedence over your changes, as it uses the
298 * %GTK_STYLE_PROVIDER_PRIORITY_USER priority.
301 * If a custom theming engine is needed, you probably want to implement a
302 * #GtkStyleProvider yourself so it points to your #GtkThemingEngine
303 * implementation, as #GtkCssProvider uses gtk_theming_engine_load()
304 * which loads the theming engine module from the standard paths.
309 /* When these change we do a full restyling. Otherwise we try to figure out
310 * if we need to change things. */
311 #define GTK_STYLE_CONTEXT_RADICAL_CHANGE (GTK_CSS_CHANGE_NAME | GTK_CSS_CHANGE_CLASS | GTK_CSS_CHANGE_SOURCE)
312 /* When these change we don't clear the cache. This takes more memory but makes
313 * things go faster. */
314 #define GTK_STYLE_CONTEXT_CACHED_CHANGE (GTK_CSS_CHANGE_STATE)
316 typedef struct GtkStyleInfo GtkStyleInfo;
317 typedef struct GtkRegion GtkRegion;
318 typedef struct PropertyValue PropertyValue;
319 typedef struct StyleData StyleData;
324 GtkRegionFlags flags;
338 GArray *style_classes;
340 GtkJunctionSides junction_sides;
341 GtkStateFlags state_flags;
347 GtkCssComputedValues *store;
348 GArray *property_cache;
352 struct _GtkStyleContextPrivate
356 GtkStyleCascade *cascade;
358 GtkStyleContext *animation_list_prev;
359 GtkStyleContext *animation_list_next;
361 GtkStyleContext *parent;
364 GtkWidgetPath *widget_path;
365 GHashTable *style_data;
368 GtkTextDirection direction;
370 GtkCssChange relevant_changes;
371 GtkCssChange pending_changes;
373 guint invalidating_context : 1;
389 static guint signals[LAST_SIGNAL] = { 0 };
390 static GtkStyleContext *_running_animations = NULL;
391 guint _running_animations_timer_id = 0;
393 static void gtk_style_context_finalize (GObject *object);
395 static void gtk_style_context_impl_set_property (GObject *object,
399 static void gtk_style_context_impl_get_property (GObject *object,
403 static GtkSymbolicColor *
404 gtk_style_context_color_lookup_func (gpointer contextp,
408 G_DEFINE_TYPE (GtkStyleContext, gtk_style_context, G_TYPE_OBJECT)
411 gtk_style_context_real_changed (GtkStyleContext *context)
413 GtkStyleContextPrivate *priv = context->priv;
416 _gtk_widget_style_context_invalidated (priv->widget);
420 gtk_style_context_class_init (GtkStyleContextClass *klass)
422 GObjectClass *object_class = G_OBJECT_CLASS (klass);
424 object_class->finalize = gtk_style_context_finalize;
425 object_class->set_property = gtk_style_context_impl_set_property;
426 object_class->get_property = gtk_style_context_impl_get_property;
428 klass->changed = gtk_style_context_real_changed;
431 g_signal_new (I_("changed"),
432 G_TYPE_FROM_CLASS (object_class),
434 G_STRUCT_OFFSET (GtkStyleContextClass, changed),
436 g_cclosure_marshal_VOID__VOID,
439 g_object_class_install_property (object_class,
441 g_param_spec_object ("screen",
443 P_("The associated GdkScreen"),
445 GTK_PARAM_READWRITE));
446 g_object_class_install_property (object_class,
448 g_param_spec_enum ("direction",
450 P_("Text direction"),
451 GTK_TYPE_TEXT_DIRECTION,
453 GTK_PARAM_READWRITE));
455 * GtkStyleContext:parent:
457 * Sets or gets the style context's parent. See gtk_style_context_set_parent()
462 g_object_class_install_property (object_class,
464 g_param_spec_object ("parent",
466 P_("The parent style context"),
467 GTK_TYPE_STYLE_CONTEXT,
468 GTK_PARAM_READWRITE));
470 g_type_class_add_private (object_class, sizeof (GtkStyleContextPrivate));
474 style_data_new (void)
478 data = g_slice_new0 (StyleData);
485 clear_property_cache (StyleData *data)
489 if (!data->property_cache)
492 for (i = 0; i < data->property_cache->len; i++)
494 PropertyValue *node = &g_array_index (data->property_cache, PropertyValue, i);
496 g_param_spec_unref (node->pspec);
497 g_value_unset (&node->value);
500 g_array_free (data->property_cache, TRUE);
501 data->property_cache = NULL;
505 style_data_ref (StyleData *style_data)
507 style_data->ref_count++;
513 style_data_unref (StyleData *data)
517 if (data->ref_count > 0)
520 g_object_unref (data->store);
521 clear_property_cache (data);
523 g_slice_free (StyleData, data);
527 style_data_is_animating (StyleData *style_data)
529 return GTK_IS_CSS_ANIMATED_VALUES (style_data->store);
532 static GtkStyleInfo *
533 style_info_new (void)
537 info = g_slice_new0 (GtkStyleInfo);
538 info->style_classes = g_array_new (FALSE, FALSE, sizeof (GQuark));
539 info->regions = g_array_new (FALSE, FALSE, sizeof (GtkRegion));
545 style_info_set_data (GtkStyleInfo *info,
548 if (info->data == data)
552 style_data_ref (data);
555 style_data_unref (info->data);
561 style_info_free (GtkStyleInfo *info)
563 style_info_set_data (info, NULL);
564 g_array_free (info->style_classes, TRUE);
565 g_array_free (info->regions, TRUE);
566 g_slice_free (GtkStyleInfo, info);
569 static GtkStyleInfo *
570 style_info_pop (GtkStyleInfo *info)
572 GtkStyleInfo *next = info->next;
574 style_info_free (info);
579 static GtkStyleInfo *
580 style_info_copy (GtkStyleInfo *info)
584 copy = style_info_new ();
585 g_array_insert_vals (copy->style_classes, 0,
586 info->style_classes->data,
587 info->style_classes->len);
589 g_array_insert_vals (copy->regions, 0,
594 copy->junction_sides = info->junction_sides;
595 copy->state_flags = info->state_flags;
596 style_info_set_data (copy, info->data);
602 style_info_hash (gconstpointer elem)
604 const GtkStyleInfo *info;
609 for (i = 0; i < info->style_classes->len; i++)
611 hash += g_array_index (info->style_classes, GQuark, i);
615 for (i = 0; i < info->regions->len; i++)
619 region = &g_array_index (info->regions, GtkRegion, i);
620 hash += region->class_quark;
621 hash += region->flags;
625 return hash ^ info->state_flags;
629 style_info_equal (gconstpointer elem1,
632 const GtkStyleInfo *info1, *info2;
637 if (info1->state_flags != info2->state_flags)
640 if (info1->junction_sides != info2->junction_sides)
643 if (info1->style_classes->len != info2->style_classes->len)
646 if (memcmp (info1->style_classes->data,
647 info2->style_classes->data,
648 info1->style_classes->len * sizeof (GQuark)) != 0)
651 if (info1->regions->len != info2->regions->len)
654 if (memcmp (info1->regions->data,
655 info2->regions->data,
656 info1->regions->len * sizeof (GtkRegion)) != 0)
663 gtk_style_context_cascade_changed (GtkStyleCascade *cascade,
664 GtkStyleContext *context)
666 _gtk_style_context_queue_invalidate (context, GTK_CSS_CHANGE_SOURCE);
670 gtk_style_context_set_cascade (GtkStyleContext *context,
671 GtkStyleCascade *cascade)
673 GtkStyleContextPrivate *priv;
675 priv = context->priv;
677 if (priv->cascade == cascade)
682 g_object_ref (cascade);
683 g_signal_connect (cascade,
684 "-gtk-private-changed",
685 G_CALLBACK (gtk_style_context_cascade_changed),
691 g_signal_handlers_disconnect_by_func (priv->cascade,
692 gtk_style_context_cascade_changed,
694 g_object_unref (priv->cascade);
697 priv->cascade = cascade;
700 gtk_style_context_cascade_changed (cascade, context);
703 GtkStyleProviderPrivate *
704 _gtk_style_context_get_style_provider (GtkStyleContext *context)
706 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL);
708 return GTK_STYLE_PROVIDER_PRIVATE (context->priv->cascade);
712 gtk_style_context_init (GtkStyleContext *style_context)
714 GtkStyleContextPrivate *priv;
716 priv = style_context->priv = G_TYPE_INSTANCE_GET_PRIVATE (style_context,
717 GTK_TYPE_STYLE_CONTEXT,
718 GtkStyleContextPrivate);
720 priv->style_data = g_hash_table_new_full (style_info_hash,
722 (GDestroyNotify) style_info_free,
723 (GDestroyNotify) style_data_unref);
725 priv->direction = GTK_TEXT_DIR_LTR;
727 priv->screen = gdk_screen_get_default ();
728 priv->relevant_changes = GTK_CSS_CHANGE_ANY;
730 /* Create default info store */
731 priv->info = style_info_new ();
733 gtk_style_context_set_cascade (style_context,
734 _gtk_style_cascade_get_for_screen (priv->screen));
738 gtk_style_context_do_animations (gpointer unused)
740 GtkStyleContext *context;
742 for (context = _running_animations;
744 context = context->priv->animation_list_next)
746 _gtk_style_context_queue_invalidate (context, GTK_CSS_CHANGE_ANIMATE);
753 gtk_style_context_is_animating (GtkStyleContext *context)
755 GtkStyleContextPrivate *priv = context->priv;
757 return priv->animation_list_prev != NULL
758 || _running_animations == context;
762 gtk_style_context_stop_animating (GtkStyleContext *context)
764 GtkStyleContextPrivate *priv = context->priv;
766 if (!gtk_style_context_is_animating (context))
769 if (priv->animation_list_prev == NULL)
771 _running_animations = priv->animation_list_next;
773 if (_running_animations == NULL)
775 /* we were the last animation */
776 g_source_remove (_running_animations_timer_id);
777 _running_animations_timer_id = 0;
781 priv->animation_list_prev->priv->animation_list_next = priv->animation_list_next;
783 if (priv->animation_list_next)
784 priv->animation_list_next->priv->animation_list_prev = priv->animation_list_prev;
786 priv->animation_list_next = NULL;
787 priv->animation_list_prev = NULL;
791 gtk_style_context_start_animating (GtkStyleContext *context)
793 GtkStyleContextPrivate *priv = context->priv;
795 if (gtk_style_context_is_animating (context))
798 if (_running_animations == NULL)
800 _running_animations_timer_id = gdk_threads_add_timeout (25,
801 gtk_style_context_do_animations,
803 _running_animations = context;
807 priv->animation_list_next = _running_animations;
808 _running_animations->priv->animation_list_prev = context;
809 _running_animations = context;
814 gtk_style_context_finalize (GObject *object)
816 GtkStyleContextPrivate *priv;
817 GtkStyleContext *style_context;
819 style_context = GTK_STYLE_CONTEXT (object);
820 priv = style_context->priv;
822 _gtk_style_context_stop_animations (style_context);
824 /* children hold a reference to us */
825 g_assert (priv->children == NULL);
827 gtk_style_context_set_parent (style_context, NULL);
829 gtk_style_context_set_cascade (style_context, NULL);
831 if (priv->widget_path)
832 gtk_widget_path_free (priv->widget_path);
834 g_hash_table_destroy (priv->style_data);
837 priv->info = style_info_pop (priv->info);
839 G_OBJECT_CLASS (gtk_style_context_parent_class)->finalize (object);
843 gtk_style_context_impl_set_property (GObject *object,
848 GtkStyleContext *style_context;
850 style_context = GTK_STYLE_CONTEXT (object);
855 gtk_style_context_set_screen (style_context,
856 g_value_get_object (value));
859 gtk_style_context_set_direction (style_context,
860 g_value_get_enum (value));
863 gtk_style_context_set_parent (style_context,
864 g_value_get_object (value));
867 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
873 gtk_style_context_impl_get_property (GObject *object,
878 GtkStyleContext *style_context;
879 GtkStyleContextPrivate *priv;
881 style_context = GTK_STYLE_CONTEXT (object);
882 priv = style_context->priv;
887 g_value_set_object (value, priv->screen);
890 g_value_set_enum (value, priv->direction);
893 g_value_set_object (value, priv->parent);
896 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
901 static GtkWidgetPath *
902 create_query_path (GtkStyleContext *context)
904 GtkStyleContextPrivate *priv;
909 priv = context->priv;
910 path = priv->widget ? _gtk_widget_create_path (priv->widget) : gtk_widget_path_copy (priv->widget_path);
911 pos = gtk_widget_path_length (path) - 1;
915 /* Set widget regions */
916 for (i = 0; i < info->regions->len; i++)
920 region = &g_array_index (info->regions, GtkRegion, i);
921 gtk_widget_path_iter_add_region (path, pos,
922 g_quark_to_string (region->class_quark),
926 /* Set widget classes */
927 for (i = 0; i < info->style_classes->len; i++)
931 quark = g_array_index (info->style_classes, GQuark, i);
932 gtk_widget_path_iter_add_class (path, pos,
933 g_quark_to_string (quark));
940 build_properties (GtkStyleContext *context,
941 GtkCssComputedValues *values,
943 const GtkBitmask *relevant_changes)
945 GtkStyleContextPrivate *priv;
946 GtkCssMatcher matcher;
948 GtkCssLookup *lookup;
950 priv = context->priv;
952 path = create_query_path (context);
953 lookup = _gtk_css_lookup_new (relevant_changes);
955 if (_gtk_css_matcher_init (&matcher, path, state))
956 _gtk_style_provider_private_lookup (GTK_STYLE_PROVIDER_PRIVATE (priv->cascade),
960 _gtk_css_lookup_resolve (lookup, context, values);
962 _gtk_css_lookup_free (lookup);
963 gtk_widget_path_free (path);
967 style_data_lookup (GtkStyleContext *context)
969 GtkStyleContextPrivate *priv;
973 priv = context->priv;
976 /* Current data in use is cached, just return it */
980 g_assert (priv->widget != NULL || priv->widget_path != NULL);
982 data = g_hash_table_lookup (priv->style_data, info);
985 style_info_set_data (info, data);
989 data = style_data_new ();
990 data->store = _gtk_css_computed_values_new ();
991 style_info_set_data (info, data);
992 g_hash_table_insert (priv->style_data,
993 style_info_copy (info),
996 build_properties (context, data->store, info->state_flags, NULL);
1002 style_data_lookup_for_state (GtkStyleContext *context,
1003 GtkStateFlags state)
1007 if (context->priv->info->state_flags == state)
1008 return style_data_lookup (context);
1010 gtk_style_context_save (context);
1011 gtk_style_context_set_state (context, state);
1012 data = style_data_lookup (context);
1013 gtk_style_context_restore (context);
1019 gtk_style_context_set_invalid (GtkStyleContext *context,
1022 GtkStyleContextPrivate *priv;
1024 priv = context->priv;
1026 if (priv->invalid == invalid)
1029 priv->invalid = invalid;
1034 gtk_style_context_set_invalid (priv->parent, TRUE);
1035 else if (GTK_IS_RESIZE_CONTAINER (priv->widget))
1036 _gtk_container_queue_restyle (GTK_CONTAINER (priv->widget));
1040 /* returns TRUE if someone called gtk_style_context_save() but hasn't
1041 * called gtk_style_context_restore() yet.
1042 * In those situations we don't invalidate the context when somebody
1043 * changes state/regions/classes.
1046 gtk_style_context_is_saved (GtkStyleContext *context)
1048 return context->priv->info->next != NULL;
1052 gtk_style_context_queue_invalidate_internal (GtkStyleContext *context,
1053 GtkCssChange change)
1055 GtkStyleContextPrivate *priv = context->priv;
1056 GtkStyleInfo *info = priv->info;
1058 if (gtk_style_context_is_saved (context))
1060 style_info_set_data (info, NULL);
1064 _gtk_style_context_queue_invalidate (context, change);
1065 /* XXX: We need to invalidate siblings here somehow */
1070 * gtk_style_context_new:
1072 * Creates a standalone #GtkStyleContext, this style context
1073 * won't be attached to any widget, so you may want
1074 * to call gtk_style_context_set_path() yourself.
1077 * This function is only useful when using the theming layer
1078 * separated from GTK+, if you are using #GtkStyleContext to
1079 * theme #GtkWidget<!-- -->s, use gtk_widget_get_style_context()
1080 * in order to get a style context ready to theme the widget.
1083 * Returns: A newly created #GtkStyleContext.
1086 gtk_style_context_new (void)
1088 return g_object_new (GTK_TYPE_STYLE_CONTEXT, NULL);
1092 _gtk_style_context_set_widget (GtkStyleContext *context,
1095 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
1096 g_return_if_fail (widget == NULL || GTK_IS_WIDGET (widget));
1098 context->priv->widget = widget;
1100 _gtk_style_context_stop_animations (context);
1102 _gtk_style_context_queue_invalidate (context, GTK_CSS_CHANGE_ANY_SELF);
1106 * gtk_style_context_add_provider:
1107 * @context: a #GtkStyleContext
1108 * @provider: a #GtkStyleProvider
1109 * @priority: the priority of the style provider. The lower
1110 * it is, the earlier it will be used in the style
1111 * construction. Typically this will be in the range
1112 * between %GTK_STYLE_PROVIDER_PRIORITY_FALLBACK and
1113 * %GTK_STYLE_PROVIDER_PRIORITY_USER
1115 * Adds a style provider to @context, to be used in style construction.
1116 * Note that a style provider added by this function only affects
1117 * the style of the widget to which @context belongs. If you want
1118 * to affect the style of all widgets, use
1119 * gtk_style_context_add_provider_for_screen().
1121 * <note><para>If both priorities are the same, A #GtkStyleProvider
1122 * added through this function takes precedence over another added
1123 * through gtk_style_context_add_provider_for_screen().</para></note>
1128 gtk_style_context_add_provider (GtkStyleContext *context,
1129 GtkStyleProvider *provider,
1132 GtkStyleContextPrivate *priv;
1134 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
1135 g_return_if_fail (GTK_IS_STYLE_PROVIDER (provider));
1137 priv = context->priv;
1139 if (priv->cascade == _gtk_style_cascade_get_for_screen (priv->screen))
1141 GtkStyleCascade *new_cascade;
1143 new_cascade = _gtk_style_cascade_new ();
1144 _gtk_style_cascade_set_parent (new_cascade, priv->cascade);
1145 _gtk_style_cascade_add_provider (new_cascade, provider, priority);
1146 gtk_style_context_set_cascade (context, new_cascade);
1147 g_object_unref (new_cascade);
1151 _gtk_style_cascade_add_provider (priv->cascade, provider, priority);
1156 * gtk_style_context_remove_provider:
1157 * @context: a #GtkStyleContext
1158 * @provider: a #GtkStyleProvider
1160 * Removes @provider from the style providers list in @context.
1165 gtk_style_context_remove_provider (GtkStyleContext *context,
1166 GtkStyleProvider *provider)
1168 GtkStyleContextPrivate *priv;
1170 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
1171 g_return_if_fail (GTK_IS_STYLE_PROVIDER (provider));
1173 priv = context->priv;
1175 if (priv->cascade == _gtk_style_cascade_get_for_screen (priv->screen))
1178 _gtk_style_cascade_remove_provider (priv->cascade, provider);
1182 * gtk_style_context_reset_widgets:
1183 * @screen: a #GdkScreen
1185 * This function recomputes the styles for all widgets under a particular
1186 * #GdkScreen. This is useful when some global parameter has changed that
1187 * affects the appearance of all widgets, because when a widget gets a new
1188 * style, it will both redraw and recompute any cached information about
1189 * its appearance. As an example, it is used when the color scheme changes
1190 * in the related #GtkSettings object.
1195 gtk_style_context_reset_widgets (GdkScreen *screen)
1197 GList *list, *toplevels;
1199 _gtk_icon_set_invalidate_caches ();
1201 toplevels = gtk_window_list_toplevels ();
1202 g_list_foreach (toplevels, (GFunc) g_object_ref, NULL);
1204 for (list = toplevels; list; list = list->next)
1206 if (gtk_widget_get_screen (list->data) == screen)
1207 gtk_widget_reset_style (list->data);
1209 g_object_unref (list->data);
1212 g_list_free (toplevels);
1216 * gtk_style_context_add_provider_for_screen:
1217 * @screen: a #GdkScreen
1218 * @provider: a #GtkStyleProvider
1219 * @priority: the priority of the style provider. The lower
1220 * it is, the earlier it will be used in the style
1221 * construction. Typically this will be in the range
1222 * between %GTK_STYLE_PROVIDER_PRIORITY_FALLBACK and
1223 * %GTK_STYLE_PROVIDER_PRIORITY_USER
1225 * Adds a global style provider to @screen, which will be used
1226 * in style construction for all #GtkStyleContexts under @screen.
1228 * GTK+ uses this to make styling information from #GtkSettings
1231 * <note><para>If both priorities are the same, A #GtkStyleProvider
1232 * added through gtk_style_context_add_provider() takes precedence
1233 * over another added through this function.</para></note>
1238 gtk_style_context_add_provider_for_screen (GdkScreen *screen,
1239 GtkStyleProvider *provider,
1242 GtkStyleCascade *cascade;
1244 g_return_if_fail (GDK_IS_SCREEN (screen));
1245 g_return_if_fail (GTK_IS_STYLE_PROVIDER (provider));
1246 g_return_if_fail (!GTK_IS_SETTINGS (provider) || _gtk_settings_get_screen (GTK_SETTINGS (provider)) == screen);
1248 cascade = _gtk_style_cascade_get_for_screen (screen);
1249 _gtk_style_cascade_add_provider (cascade, provider, priority);
1253 * gtk_style_context_remove_provider_for_screen:
1254 * @screen: a #GdkScreen
1255 * @provider: a #GtkStyleProvider
1257 * Removes @provider from the global style providers list in @screen.
1262 gtk_style_context_remove_provider_for_screen (GdkScreen *screen,
1263 GtkStyleProvider *provider)
1265 GtkStyleCascade *cascade;
1267 g_return_if_fail (GDK_IS_SCREEN (screen));
1268 g_return_if_fail (GTK_IS_STYLE_PROVIDER (provider));
1269 g_return_if_fail (!GTK_IS_SETTINGS (provider));
1271 cascade = _gtk_style_cascade_get_for_screen (screen);
1272 _gtk_style_cascade_remove_provider (cascade, provider);
1276 * gtk_style_context_get_section:
1277 * @context: a #GtkStyleContext
1278 * @property: style property name
1280 * Queries the location in the CSS where @property was defined for the
1281 * current @context. Note that the state to be queried is taken from
1282 * gtk_style_context_get_state().
1284 * If the location is not available, %NULL will be returned. The
1285 * location might not be available for various reasons, such as the
1286 * property being overridden, @property not naming a supported CSS
1287 * property or tracking of definitions being disabled for performance
1290 * Shorthand CSS properties cannot be queried for a location and will
1291 * always return %NULL.
1293 * Returns: %NULL or the section where value was defined
1296 gtk_style_context_get_section (GtkStyleContext *context,
1297 const gchar *property)
1299 GtkStyleContextPrivate *priv;
1300 GtkStyleProperty *prop;
1303 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL);
1304 g_return_val_if_fail (property != NULL, NULL);
1306 priv = context->priv;
1307 g_return_val_if_fail (priv->widget != NULL || priv->widget_path != NULL, NULL);
1309 prop = _gtk_style_property_lookup (property);
1310 if (!GTK_IS_CSS_STYLE_PROPERTY (prop))
1313 data = style_data_lookup (context);
1314 return _gtk_css_computed_values_get_section (data->store, _gtk_css_style_property_get_id (GTK_CSS_STYLE_PROPERTY (prop)));
1317 static GtkCssValue *
1318 gtk_style_context_query_func (guint id,
1321 return _gtk_css_computed_values_get_value (values, id);
1325 * gtk_style_context_get_property:
1326 * @context: a #GtkStyleContext
1327 * @property: style property name
1328 * @state: state to retrieve the property value for
1329 * @value: (out) (transfer full): return location for the style property value
1331 * Gets a style property from @context for the given state.
1333 * When @value is no longer needed, g_value_unset() must be called
1334 * to free any allocated memory.
1339 gtk_style_context_get_property (GtkStyleContext *context,
1340 const gchar *property,
1341 GtkStateFlags state,
1344 GtkStyleContextPrivate *priv;
1345 GtkStyleProperty *prop;
1348 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
1349 g_return_if_fail (property != NULL);
1350 g_return_if_fail (value != NULL);
1352 priv = context->priv;
1353 g_return_if_fail (priv->widget != NULL || priv->widget_path != NULL);
1355 prop = _gtk_style_property_lookup (property);
1358 g_warning ("Style property \"%s\" is not registered", property);
1361 if (_gtk_style_property_get_value_type (prop) == G_TYPE_NONE)
1363 g_warning ("Style property \"%s\" is not gettable", property);
1367 data = style_data_lookup_for_state (context, state);
1368 _gtk_style_property_query (prop, value, gtk_style_context_query_func, data->store);
1372 * gtk_style_context_get_valist:
1373 * @context: a #GtkStyleContext
1374 * @state: state to retrieve the property values for
1375 * @args: va_list of property name/return location pairs, followed by %NULL
1377 * Retrieves several style property values from @context for a given state.
1382 gtk_style_context_get_valist (GtkStyleContext *context,
1383 GtkStateFlags state,
1386 const gchar *property_name;
1388 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
1390 property_name = va_arg (args, const gchar *);
1392 while (property_name)
1394 gchar *error = NULL;
1395 GValue value = G_VALUE_INIT;
1397 gtk_style_context_get_property (context,
1402 G_VALUE_LCOPY (&value, args, 0, &error);
1403 g_value_unset (&value);
1407 g_warning ("Could not get style property \"%s\": %s", property_name, error);
1412 property_name = va_arg (args, const gchar *);
1417 * gtk_style_context_get:
1418 * @context: a #GtkStyleContext
1419 * @state: state to retrieve the property values for
1420 * @...: property name /return value pairs, followed by %NULL
1422 * Retrieves several style property values from @context for a
1428 gtk_style_context_get (GtkStyleContext *context,
1429 GtkStateFlags state,
1434 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
1436 va_start (args, state);
1437 gtk_style_context_get_valist (context, state, args);
1442 * gtk_style_context_set_state:
1443 * @context: a #GtkStyleContext
1444 * @flags: state to represent
1446 * Sets the state to be used when rendering with any
1447 * of the gtk_render_*() functions.
1452 gtk_style_context_set_state (GtkStyleContext *context,
1453 GtkStateFlags flags)
1455 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
1457 context->priv->info->state_flags = flags;
1459 gtk_style_context_queue_invalidate_internal (context, GTK_CSS_CHANGE_STATE);
1463 * gtk_style_context_get_state:
1464 * @context: a #GtkStyleContext
1466 * Returns the state used when rendering.
1468 * Returns: the state flags
1473 gtk_style_context_get_state (GtkStyleContext *context)
1475 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), 0);
1477 return context->priv->info->state_flags;
1481 * gtk_style_context_state_is_running:
1482 * @context: a #GtkStyleContext
1483 * @state: a widget state
1484 * @progress: (out): return location for the transition progress
1486 * Returns %TRUE if there is a transition animation running for the
1487 * current region (see gtk_style_context_push_animatable_region()).
1489 * If @progress is not %NULL, the animation progress will be returned
1490 * there, 0.0 means the state is closest to being unset, while 1.0 means
1491 * it's closest to being set. This means transition animation will
1492 * run from 0 to 1 when @state is being set and from 1 to 0 when
1495 * Returns: %TRUE if there is a running transition animation for @state.
1499 * Deprecated: 3.6: This function always returns %FALSE
1502 gtk_style_context_state_is_running (GtkStyleContext *context,
1506 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), FALSE);
1512 * gtk_style_context_set_path:
1513 * @context: a #GtkStyleContext
1514 * @path: a #GtkWidgetPath
1516 * Sets the #GtkWidgetPath used for style matching. As a
1517 * consequence, the style will be regenerated to match
1518 * the new given path.
1520 * If you are using a #GtkStyleContext returned from
1521 * gtk_widget_get_style_context(), you do not need to call
1527 gtk_style_context_set_path (GtkStyleContext *context,
1528 GtkWidgetPath *path)
1530 GtkStyleContextPrivate *priv;
1532 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
1533 g_return_if_fail (path != NULL);
1535 priv = context->priv;
1536 g_return_if_fail (priv->widget == NULL);
1538 if (priv->widget_path)
1540 gtk_widget_path_free (priv->widget_path);
1541 priv->widget_path = NULL;
1545 priv->widget_path = gtk_widget_path_copy (path);
1547 _gtk_style_context_queue_invalidate (context, GTK_CSS_CHANGE_ANY);
1551 * gtk_style_context_get_path:
1552 * @context: a #GtkStyleContext
1554 * Returns the widget path used for style matching.
1556 * Returns: (transfer none): A #GtkWidgetPath
1560 const GtkWidgetPath *
1561 gtk_style_context_get_path (GtkStyleContext *context)
1563 GtkStyleContextPrivate *priv;
1565 priv = context->priv;
1567 return gtk_widget_get_path (priv->widget);
1569 return priv->widget_path;
1573 * gtk_style_context_set_parent:
1574 * @context: a #GtkStyleContext
1575 * @parent: (allow-none): the new parent or %NULL
1577 * Sets the parent style context for @context. The parent style
1578 * context is used to implement
1579 * <ulink url="http://www.w3.org/TR/css3-cascade/#inheritance">inheritance</ulink>
1582 * If you are using a #GtkStyleContext returned from
1583 * gtk_widget_get_style_context(), the parent will be set for you.
1588 gtk_style_context_set_parent (GtkStyleContext *context,
1589 GtkStyleContext *parent)
1591 GtkStyleContextPrivate *priv;
1593 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
1594 g_return_if_fail (parent == NULL || GTK_IS_STYLE_CONTEXT (parent));
1596 priv = context->priv;
1598 if (priv->parent == parent)
1603 parent->priv->children = g_slist_prepend (parent->priv->children, context);
1604 g_object_ref (parent);
1606 gtk_style_context_set_invalid (parent, TRUE);
1611 priv->parent->priv->children = g_slist_remove (priv->parent->priv->children, context);
1612 g_object_unref (priv->parent);
1615 priv->parent = parent;
1617 g_object_notify (G_OBJECT (context), "parent");
1618 _gtk_style_context_queue_invalidate (context, GTK_CSS_CHANGE_ANY_PARENT | GTK_CSS_CHANGE_ANY_SIBLING);
1622 * gtk_style_context_get_parent:
1623 * @context: a #GtkStyleContext
1625 * Gets the parent context set via gtk_style_context_set_parent().
1626 * See that function for details.
1628 * Returns: (transfer none): the parent context or %NULL
1633 gtk_style_context_get_parent (GtkStyleContext *context)
1635 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL);
1637 return context->priv->parent;
1641 * gtk_style_context_save:
1642 * @context: a #GtkStyleContext
1644 * Saves the @context state, so all modifications done through
1645 * gtk_style_context_add_class(), gtk_style_context_remove_class(),
1646 * gtk_style_context_add_region(), gtk_style_context_remove_region()
1647 * or gtk_style_context_set_junction_sides() can be reverted in one
1648 * go through gtk_style_context_restore().
1653 gtk_style_context_save (GtkStyleContext *context)
1655 GtkStyleContextPrivate *priv;
1657 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
1659 priv = context->priv;
1661 priv->info = style_info_copy (priv->info);
1662 /* Need to unset animations here because we can not know what style
1663 * class potential transitions came from once we save().
1665 if (priv->info->data && style_data_is_animating (priv->info->data))
1666 style_info_set_data (priv->info, NULL);
1670 * gtk_style_context_restore:
1671 * @context: a #GtkStyleContext
1673 * Restores @context state to a previous stage.
1674 * See gtk_style_context_save().
1679 gtk_style_context_restore (GtkStyleContext *context)
1681 GtkStyleContextPrivate *priv;
1683 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
1685 priv = context->priv;
1687 priv->info = style_info_pop (priv->info);
1691 g_warning ("Unpaired gtk_style_context_restore() call");
1693 /* Create default region */
1694 priv->info = style_info_new ();
1699 style_class_find (GArray *array,
1704 gboolean found = FALSE;
1710 if (!array || array->len == 0)
1714 max = array->len - 1;
1720 mid = (min + max) / 2;
1721 item = g_array_index (array, GQuark, mid);
1723 if (class_quark == item)
1728 else if (class_quark > item)
1729 min = pos = mid + 1;
1736 while (!found && min <= max);
1745 region_find (GArray *array,
1750 gboolean found = FALSE;
1756 if (!array || array->len == 0)
1760 max = array->len - 1;
1766 mid = (min + max) / 2;
1767 region = &g_array_index (array, GtkRegion, mid);
1769 if (region->class_quark == class_quark)
1774 else if (region->class_quark > class_quark)
1775 min = pos = mid + 1;
1782 while (!found && min <= max);
1791 * gtk_style_context_add_class:
1792 * @context: a #GtkStyleContext
1793 * @class_name: class name to use in styling
1795 * Adds a style class to @context, so posterior calls to
1796 * gtk_style_context_get() or any of the gtk_render_*()
1797 * functions will make use of this new class for styling.
1799 * In the CSS file format, a #GtkEntry defining an "entry"
1800 * class, would be matched by:
1803 * GtkEntry.entry { ... }
1806 * While any widget defining an "entry" class would be
1815 gtk_style_context_add_class (GtkStyleContext *context,
1816 const gchar *class_name)
1818 GtkStyleContextPrivate *priv;
1823 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
1824 g_return_if_fail (class_name != NULL);
1826 priv = context->priv;
1827 class_quark = g_quark_from_string (class_name);
1831 if (!style_class_find (info->style_classes, class_quark, &position))
1833 g_array_insert_val (info->style_classes, position, class_quark);
1835 gtk_style_context_queue_invalidate_internal (context, GTK_CSS_CHANGE_CLASS);
1840 * gtk_style_context_remove_class:
1841 * @context: a #GtkStyleContext
1842 * @class_name: class name to remove
1844 * Removes @class_name from @context.
1849 gtk_style_context_remove_class (GtkStyleContext *context,
1850 const gchar *class_name)
1852 GtkStyleContextPrivate *priv;
1857 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
1858 g_return_if_fail (class_name != NULL);
1860 class_quark = g_quark_try_string (class_name);
1865 priv = context->priv;
1869 if (style_class_find (info->style_classes, class_quark, &position))
1871 g_array_remove_index (info->style_classes, position);
1873 gtk_style_context_queue_invalidate_internal (context, GTK_CSS_CHANGE_CLASS);
1878 * gtk_style_context_has_class:
1879 * @context: a #GtkStyleContext
1880 * @class_name: a class name
1882 * Returns %TRUE if @context currently has defined the
1885 * Returns: %TRUE if @context has @class_name defined
1890 gtk_style_context_has_class (GtkStyleContext *context,
1891 const gchar *class_name)
1893 GtkStyleContextPrivate *priv;
1897 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), FALSE);
1898 g_return_val_if_fail (class_name != NULL, FALSE);
1900 class_quark = g_quark_try_string (class_name);
1905 priv = context->priv;
1909 if (style_class_find (info->style_classes, class_quark, NULL))
1916 * gtk_style_context_list_classes:
1917 * @context: a #GtkStyleContext
1919 * Returns the list of classes currently defined in @context.
1921 * Returns: (transfer container) (element-type utf8): a #GList of
1922 * strings with the currently defined classes. The contents
1923 * of the list are owned by GTK+, but you must free the list
1924 * itself with g_list_free() when you are done with it.
1929 gtk_style_context_list_classes (GtkStyleContext *context)
1931 GtkStyleContextPrivate *priv;
1933 GList *classes = NULL;
1936 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL);
1938 priv = context->priv;
1942 for (i = 0; i < info->style_classes->len; i++)
1946 quark = g_array_index (info->style_classes, GQuark, i);
1947 classes = g_list_prepend (classes, (gchar *) g_quark_to_string (quark));
1954 * gtk_style_context_list_regions:
1955 * @context: a #GtkStyleContext
1957 * Returns the list of regions currently defined in @context.
1959 * Returns: (transfer container) (element-type utf8): a #GList of
1960 * strings with the currently defined regions. The contents
1961 * of the list are owned by GTK+, but you must free the list
1962 * itself with g_list_free() when you are done with it.
1967 gtk_style_context_list_regions (GtkStyleContext *context)
1969 GtkStyleContextPrivate *priv;
1971 GList *classes = NULL;
1974 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL);
1976 priv = context->priv;
1980 for (i = 0; i < info->regions->len; i++)
1983 const gchar *class_name;
1985 region = &g_array_index (info->regions, GtkRegion, i);
1987 class_name = g_quark_to_string (region->class_quark);
1988 classes = g_list_prepend (classes, (gchar *) class_name);
1995 _gtk_style_context_check_region_name (const gchar *str)
1997 g_return_val_if_fail (str != NULL, FALSE);
1999 if (!g_ascii_islower (str[0]))
2005 !g_ascii_islower (*str))
2015 * gtk_style_context_add_region:
2016 * @context: a #GtkStyleContext
2017 * @region_name: region name to use in styling
2018 * @flags: flags that apply to the region
2020 * Adds a region to @context, so posterior calls to
2021 * gtk_style_context_get() or any of the gtk_render_*()
2022 * functions will make use of this new region for styling.
2024 * In the CSS file format, a #GtkTreeView defining a "row"
2025 * region, would be matched by:
2028 * GtkTreeView row { ... }
2031 * Pseudo-classes are used for matching @flags, so the two
2034 * GtkTreeView row:nth-child(even) { ... }
2035 * GtkTreeView row:nth-child(odd) { ... }
2038 * would apply to even and odd rows, respectively.
2040 * <note><para>Region names must only contain lowercase letters
2041 * and '-', starting always with a lowercase letter.</para></note>
2046 gtk_style_context_add_region (GtkStyleContext *context,
2047 const gchar *region_name,
2048 GtkRegionFlags flags)
2050 GtkStyleContextPrivate *priv;
2052 GQuark region_quark;
2055 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
2056 g_return_if_fail (region_name != NULL);
2057 g_return_if_fail (_gtk_style_context_check_region_name (region_name));
2059 priv = context->priv;
2060 region_quark = g_quark_from_string (region_name);
2064 if (!region_find (info->regions, region_quark, &position))
2068 region.class_quark = region_quark;
2069 region.flags = flags;
2071 g_array_insert_val (info->regions, position, region);
2073 gtk_style_context_queue_invalidate_internal (context, GTK_CSS_CHANGE_REGION);
2078 * gtk_style_context_remove_region:
2079 * @context: a #GtkStyleContext
2080 * @region_name: region name to unset
2082 * Removes a region from @context.
2087 gtk_style_context_remove_region (GtkStyleContext *context,
2088 const gchar *region_name)
2090 GtkStyleContextPrivate *priv;
2092 GQuark region_quark;
2095 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
2096 g_return_if_fail (region_name != NULL);
2098 region_quark = g_quark_try_string (region_name);
2103 priv = context->priv;
2107 if (region_find (info->regions, region_quark, &position))
2109 g_array_remove_index (info->regions, position);
2111 gtk_style_context_queue_invalidate_internal (context, GTK_CSS_CHANGE_REGION);
2116 * gtk_style_context_has_region:
2117 * @context: a #GtkStyleContext
2118 * @region_name: a region name
2119 * @flags_return: (out) (allow-none): return location for region flags
2121 * Returns %TRUE if @context has the region defined.
2122 * If @flags_return is not %NULL, it is set to the flags
2123 * affecting the region.
2125 * Returns: %TRUE if region is defined
2130 gtk_style_context_has_region (GtkStyleContext *context,
2131 const gchar *region_name,
2132 GtkRegionFlags *flags_return)
2134 GtkStyleContextPrivate *priv;
2136 GQuark region_quark;
2139 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), FALSE);
2140 g_return_val_if_fail (region_name != NULL, FALSE);
2145 region_quark = g_quark_try_string (region_name);
2150 priv = context->priv;
2154 if (region_find (info->regions, region_quark, &position))
2160 region = &g_array_index (info->regions, GtkRegion, position);
2161 *flags_return = region->flags;
2170 style_property_values_cmp (gconstpointer bsearch_node1,
2171 gconstpointer bsearch_node2)
2173 const PropertyValue *val1 = bsearch_node1;
2174 const PropertyValue *val2 = bsearch_node2;
2176 if (val1->widget_type != val2->widget_type)
2177 return val1->widget_type < val2->widget_type ? -1 : 1;
2179 if (val1->pspec != val2->pspec)
2180 return val1->pspec < val2->pspec ? -1 : 1;
2182 if (val1->state != val2->state)
2183 return val1->state < val2->state ? -1 : 1;
2189 _gtk_style_context_peek_property (GtkStyleContext *context,
2192 StyleData *data = style_data_lookup (context);
2194 return _gtk_css_computed_values_get_value (data->store, property_id);
2198 _gtk_style_context_get_number (GtkStyleContext *context,
2200 double one_hundred_percent)
2204 value = _gtk_style_context_peek_property (context, property_id);
2205 return _gtk_css_number_value_get (value, one_hundred_percent);
2209 _gtk_style_context_peek_style_property (GtkStyleContext *context,
2211 GtkStateFlags state,
2214 GtkStyleContextPrivate *priv;
2215 PropertyValue *pcache, key = { 0 };
2219 priv = context->priv;
2221 data = style_data_lookup_for_state (context, state);
2223 key.widget_type = widget_type;
2227 /* need value cache array */
2228 if (!data->property_cache)
2229 data->property_cache = g_array_new (FALSE, FALSE, sizeof (PropertyValue));
2232 pcache = bsearch (&key,
2233 data->property_cache->data, data->property_cache->len,
2234 sizeof (PropertyValue), style_property_values_cmp);
2236 return &pcache->value;
2240 while (i < data->property_cache->len &&
2241 style_property_values_cmp (&key, &g_array_index (data->property_cache, PropertyValue, i)) >= 0)
2244 g_array_insert_val (data->property_cache, i, key);
2245 pcache = &g_array_index (data->property_cache, PropertyValue, i);
2247 /* cache miss, initialize value type, then set contents */
2248 g_param_spec_ref (pcache->pspec);
2249 g_value_init (&pcache->value, G_PARAM_SPEC_VALUE_TYPE (pspec));
2251 if (priv->widget || priv->widget_path)
2253 GtkWidgetPath *widget_path = priv->widget ? _gtk_widget_create_path (priv->widget) : priv->widget_path;
2255 if (gtk_style_provider_get_style_property (GTK_STYLE_PROVIDER (priv->cascade),
2257 state, pspec, &pcache->value))
2259 /* Resolve symbolic colors to GdkColor/GdkRGBA */
2260 if (G_VALUE_TYPE (&pcache->value) == GTK_TYPE_SYMBOLIC_COLOR)
2262 GtkSymbolicColor *color;
2265 color = g_value_dup_boxed (&pcache->value);
2267 g_value_unset (&pcache->value);
2269 if (G_PARAM_SPEC_VALUE_TYPE (pspec) == GDK_TYPE_RGBA)
2270 g_value_init (&pcache->value, GDK_TYPE_RGBA);
2272 g_value_init (&pcache->value, GDK_TYPE_COLOR);
2274 if (_gtk_style_context_resolve_color (context, color, &rgba, NULL))
2276 if (G_PARAM_SPEC_VALUE_TYPE (pspec) == GDK_TYPE_RGBA)
2277 g_value_set_boxed (&pcache->value, &rgba);
2282 rgb.red = rgba.red * 65535. + 0.5;
2283 rgb.green = rgba.green * 65535. + 0.5;
2284 rgb.blue = rgba.blue * 65535. + 0.5;
2286 g_value_set_boxed (&pcache->value, &rgb);
2290 g_param_value_set_default (pspec, &pcache->value);
2292 gtk_symbolic_color_unref (color);
2296 gtk_widget_path_free (widget_path);
2298 return &pcache->value;
2302 gtk_widget_path_free (widget_path);
2305 /* not supplied by any provider, revert to default */
2306 g_param_value_set_default (pspec, &pcache->value);
2308 return &pcache->value;
2312 * gtk_style_context_get_style_property:
2313 * @context: a #GtkStyleContext
2314 * @property_name: the name of the widget style property
2315 * @value: Return location for the property value
2317 * Gets the value for a widget style property.
2319 * When @value is no longer needed, g_value_unset() must be called
2320 * to free any allocated memory.
2323 gtk_style_context_get_style_property (GtkStyleContext *context,
2324 const gchar *property_name,
2327 GtkStyleContextPrivate *priv;
2328 GtkWidgetClass *widget_class;
2329 GtkStateFlags state;
2331 const GValue *peek_value;
2334 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
2335 g_return_if_fail (property_name != NULL);
2336 g_return_if_fail (value != NULL);
2338 priv = context->priv;
2342 widget_type = G_OBJECT_TYPE (priv->widget);
2346 if (!priv->widget_path)
2349 widget_type = gtk_widget_path_get_object_type (priv->widget_path);
2351 if (!g_type_is_a (widget_type, GTK_TYPE_WIDGET))
2353 g_warning ("%s: can't get style properties for non-widget class `%s'",
2355 g_type_name (widget_type));
2360 widget_class = g_type_class_ref (widget_type);
2361 pspec = gtk_widget_class_find_style_property (widget_class, property_name);
2362 g_type_class_unref (widget_class);
2366 g_warning ("%s: widget class `%s' has no style property named `%s'",
2368 g_type_name (widget_type),
2373 state = gtk_style_context_get_state (context);
2374 peek_value = _gtk_style_context_peek_style_property (context, widget_type,
2377 if (G_VALUE_TYPE (value) == G_VALUE_TYPE (peek_value))
2378 g_value_copy (peek_value, value);
2379 else if (g_value_type_transformable (G_VALUE_TYPE (peek_value), G_VALUE_TYPE (value)))
2380 g_value_transform (peek_value, value);
2382 g_warning ("can't retrieve style property `%s' of type `%s' as value of type `%s'",
2384 G_VALUE_TYPE_NAME (peek_value),
2385 G_VALUE_TYPE_NAME (value));
2389 * gtk_style_context_get_style_valist:
2390 * @context: a #GtkStyleContext
2391 * @args: va_list of property name/return location pairs, followed by %NULL
2393 * Retrieves several widget style properties from @context according to the
2399 gtk_style_context_get_style_valist (GtkStyleContext *context,
2402 GtkStyleContextPrivate *priv;
2403 const gchar *prop_name;
2404 GtkStateFlags state;
2407 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
2409 prop_name = va_arg (args, const gchar *);
2410 priv = context->priv;
2414 widget_type = G_OBJECT_TYPE (priv->widget);
2418 if (!priv->widget_path)
2421 widget_type = gtk_widget_path_get_object_type (priv->widget_path);
2423 if (!g_type_is_a (widget_type, GTK_TYPE_WIDGET))
2425 g_warning ("%s: can't get style properties for non-widget class `%s'",
2427 g_type_name (widget_type));
2432 state = gtk_style_context_get_state (context);
2436 GtkWidgetClass *widget_class;
2438 const GValue *peek_value;
2441 widget_class = g_type_class_ref (widget_type);
2442 pspec = gtk_widget_class_find_style_property (widget_class, prop_name);
2443 g_type_class_unref (widget_class);
2447 g_warning ("%s: widget class `%s' has no style property named `%s'",
2449 g_type_name (widget_type),
2454 peek_value = _gtk_style_context_peek_style_property (context, widget_type,
2457 G_VALUE_LCOPY (peek_value, args, 0, &error);
2461 g_warning ("can't retrieve style property `%s' of type `%s': %s",
2463 G_VALUE_TYPE_NAME (peek_value),
2469 prop_name = va_arg (args, const gchar *);
2474 * gtk_style_context_get_style:
2475 * @context: a #GtkStyleContext
2476 * @...: property name /return value pairs, followed by %NULL
2478 * Retrieves several widget style properties from @context according to the
2484 gtk_style_context_get_style (GtkStyleContext *context,
2489 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
2491 va_start (args, context);
2492 gtk_style_context_get_style_valist (context, args);
2498 * gtk_style_context_lookup_icon_set:
2499 * @context: a #GtkStyleContext
2500 * @stock_id: an icon name
2502 * Looks up @stock_id in the icon factories associated to @context and
2503 * the default icon factory, returning an icon set if found, otherwise
2506 * Returns: (transfer none): The looked up %GtkIconSet, or %NULL
2509 gtk_style_context_lookup_icon_set (GtkStyleContext *context,
2510 const gchar *stock_id)
2512 GtkStyleContextPrivate *priv;
2514 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL);
2515 g_return_val_if_fail (stock_id != NULL, NULL);
2517 priv = context->priv;
2518 g_return_val_if_fail (priv->widget != NULL || priv->widget_path != NULL, NULL);
2520 return gtk_icon_factory_lookup_default (stock_id);
2524 * gtk_style_context_set_screen:
2525 * @context: a #GtkStyleContext
2526 * @screen: a #GdkScreen
2528 * Attaches @context to the given screen.
2530 * The screen is used to add style information from 'global' style
2531 * providers, such as the screens #GtkSettings instance.
2533 * If you are using a #GtkStyleContext returned from
2534 * gtk_widget_get_style_context(), you do not need to
2535 * call this yourself.
2540 gtk_style_context_set_screen (GtkStyleContext *context,
2543 GtkStyleContextPrivate *priv;
2545 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
2546 g_return_if_fail (GDK_IS_SCREEN (screen));
2548 priv = context->priv;
2549 if (priv->screen == screen)
2552 if (priv->cascade == _gtk_style_cascade_get_for_screen (priv->screen))
2554 gtk_style_context_set_cascade (context, _gtk_style_cascade_get_for_screen (screen));
2558 _gtk_style_cascade_set_parent (priv->cascade, _gtk_style_cascade_get_for_screen (screen));
2561 priv->screen = screen;
2563 g_object_notify (G_OBJECT (context), "screen");
2567 * gtk_style_context_get_screen:
2568 * @context: a #GtkStyleContext
2570 * Returns the #GdkScreen to which @context is attached.
2572 * Returns: (transfer none): a #GdkScreen.
2575 gtk_style_context_get_screen (GtkStyleContext *context)
2577 GtkStyleContextPrivate *priv;
2579 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL);
2581 priv = context->priv;
2582 return priv->screen;
2586 * gtk_style_context_set_direction:
2587 * @context: a #GtkStyleContext
2588 * @direction: the new direction.
2590 * Sets the reading direction for rendering purposes.
2592 * If you are using a #GtkStyleContext returned from
2593 * gtk_widget_get_style_context(), you do not need to
2594 * call this yourself.
2599 gtk_style_context_set_direction (GtkStyleContext *context,
2600 GtkTextDirection direction)
2602 GtkStyleContextPrivate *priv;
2604 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
2606 priv = context->priv;
2607 priv->direction = direction;
2609 g_object_notify (G_OBJECT (context), "direction");
2613 * gtk_style_context_get_direction:
2614 * @context: a #GtkStyleContext
2616 * Returns the widget direction used for rendering.
2618 * Returns: the widget direction
2623 gtk_style_context_get_direction (GtkStyleContext *context)
2625 GtkStyleContextPrivate *priv;
2627 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), GTK_TEXT_DIR_LTR);
2629 priv = context->priv;
2630 return priv->direction;
2634 * gtk_style_context_set_junction_sides:
2635 * @context: a #GtkStyleContext
2636 * @sides: sides where rendered elements are visually connected to
2639 * Sets the sides where rendered elements (mostly through
2640 * gtk_render_frame()) will visually connect with other visual elements.
2642 * This is merely a hint that may or may not be honored
2643 * by theming engines.
2645 * Container widgets are expected to set junction hints as appropriate
2646 * for their children, so it should not normally be necessary to call
2647 * this function manually.
2652 gtk_style_context_set_junction_sides (GtkStyleContext *context,
2653 GtkJunctionSides sides)
2655 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
2657 context->priv->info->junction_sides = sides;
2661 * gtk_style_context_get_junction_sides:
2662 * @context: a #GtkStyleContext
2664 * Returns the sides where rendered elements connect visually with others.
2666 * Returns: the junction sides
2671 gtk_style_context_get_junction_sides (GtkStyleContext *context)
2673 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), 0);
2675 return context->priv->info->junction_sides;
2678 static GtkSymbolicColor *
2679 gtk_style_context_color_lookup_func (gpointer contextp,
2682 GtkStyleContext *context = contextp;
2684 return _gtk_style_provider_private_get_color (GTK_STYLE_PROVIDER_PRIVATE (context->priv->cascade), name);
2688 _gtk_style_context_resolve_color_value (GtkStyleContext *context,
2689 GtkCssValue *current,
2690 GtkCssDependencies current_deps,
2692 GtkCssDependencies *dependencies)
2694 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), FALSE);
2695 g_return_val_if_fail (current != NULL, FALSE);
2696 g_return_val_if_fail (color != NULL, FALSE);
2698 return _gtk_symbolic_color_resolve_full ((GtkSymbolicColor *) color,
2701 gtk_style_context_color_lookup_func,
2708 _gtk_style_context_resolve_color (GtkStyleContext *context,
2709 GtkSymbolicColor *color,
2711 GtkCssDependencies *dependencies)
2715 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), FALSE);
2716 g_return_val_if_fail (color != NULL, FALSE);
2717 g_return_val_if_fail (result != NULL, FALSE);
2719 val = _gtk_symbolic_color_resolve_full (color,
2720 _gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR),
2721 GTK_CSS_DEPENDS_ON_COLOR,
2722 gtk_style_context_color_lookup_func,
2728 *result = *_gtk_css_rgba_value_get_rgba (val);
2729 _gtk_css_value_unref (val);
2734 * gtk_style_context_lookup_color:
2735 * @context: a #GtkStyleContext
2736 * @color_name: color name to lookup
2737 * @color: (out): Return location for the looked up color
2739 * Looks up and resolves a color name in the @context color map.
2741 * Returns: %TRUE if @color_name was found and resolved, %FALSE otherwise
2744 gtk_style_context_lookup_color (GtkStyleContext *context,
2745 const gchar *color_name,
2748 GtkSymbolicColor *sym_color;
2750 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), FALSE);
2751 g_return_val_if_fail (color_name != NULL, FALSE);
2752 g_return_val_if_fail (color != NULL, FALSE);
2754 sym_color = gtk_style_context_color_lookup_func (context, color_name);
2755 if (sym_color == NULL)
2758 return _gtk_style_context_resolve_color (context, sym_color, color, NULL);
2762 * gtk_style_context_notify_state_change:
2763 * @context: a #GtkStyleContext
2764 * @window: a #GdkWindow
2765 * @region_id: (allow-none): animatable region to notify on, or %NULL.
2766 * See gtk_style_context_push_animatable_region()
2767 * @state: state to trigger transition for
2768 * @state_value: %TRUE if @state is the state we are changing to,
2769 * %FALSE if we are changing away from it
2771 * Notifies a state change on @context, so if the current style makes use
2772 * of transition animations, one will be started so all rendered elements
2773 * under @region_id are animated for state @state being set to value
2776 * The @window parameter is used in order to invalidate the rendered area
2777 * as the animation runs, so make sure it is the same window that is being
2778 * rendered on by the gtk_render_*() functions.
2780 * If @region_id is %NULL, all rendered elements using @context will be
2781 * affected by this state transition.
2783 * As a practical example, a #GtkButton notifying a state transition on
2784 * the prelight state:
2786 * gtk_style_context_notify_state_change (context,
2787 * gtk_widget_get_window (widget),
2789 * GTK_STATE_PRELIGHT,
2790 * button->in_button);
2793 * Can be handled in the CSS file like this:
2796 * background-color: #f00
2800 * background-color: #fff;
2801 * transition: 200ms linear
2805 * This combination will animate the button background from red to white
2806 * if a pointer enters the button, and back to red if the pointer leaves
2809 * Note that @state is used when finding the transition parameters, which
2810 * is why the style places the transition under the :hover pseudo-class.
2814 * Deprecated: 3.6: This function does nothing.
2817 gtk_style_context_notify_state_change (GtkStyleContext *context,
2821 gboolean state_value)
2823 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
2824 g_return_if_fail (GDK_IS_WINDOW (window));
2825 g_return_if_fail (state > GTK_STATE_NORMAL && state <= GTK_STATE_FOCUSED);
2826 g_return_if_fail (context->priv->widget != NULL || context->priv->widget_path != NULL);
2830 * gtk_style_context_cancel_animations:
2831 * @context: a #GtkStyleContext
2832 * @region_id: (allow-none): animatable region to stop, or %NULL.
2833 * See gtk_style_context_push_animatable_region()
2835 * Stops all running animations for @region_id and all animatable
2836 * regions underneath.
2838 * A %NULL @region_id will stop all ongoing animations in @context,
2839 * when dealing with a #GtkStyleContext obtained through
2840 * gtk_widget_get_style_context(), this is normally done for you
2841 * in all circumstances you would expect all widget to be stopped,
2842 * so this should be only used in complex widgets with different
2843 * animatable regions.
2847 * Deprecated: 3.6: This function does nothing.
2850 gtk_style_context_cancel_animations (GtkStyleContext *context,
2853 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
2857 * gtk_style_context_scroll_animations:
2858 * @context: a #GtkStyleContext
2859 * @window: a #GdkWindow used previously in
2860 * gtk_style_context_notify_state_change()
2861 * @dx: Amount to scroll in the X axis
2862 * @dy: Amount to scroll in the Y axis
2864 * This function is analogous to gdk_window_scroll(), and
2865 * should be called together with it so the invalidation
2866 * areas for any ongoing animation are scrolled together
2871 * Deprecated: 3.6: This function does nothing.
2874 gtk_style_context_scroll_animations (GtkStyleContext *context,
2879 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
2880 g_return_if_fail (GDK_IS_WINDOW (window));
2884 * gtk_style_context_push_animatable_region:
2885 * @context: a #GtkStyleContext
2886 * @region_id: unique identifier for the animatable region
2888 * Pushes an animatable region, so all further gtk_render_*() calls between
2889 * this call and the following gtk_style_context_pop_animatable_region()
2890 * will potentially show transition animations for this region if
2891 * gtk_style_context_notify_state_change() is called for a given state,
2892 * and the current theme/style defines transition animations for state
2895 * The @region_id used must be unique in @context so the theming engine
2896 * can uniquely identify rendered elements subject to a state transition.
2900 * Deprecated: 3.6: This function does nothing.
2903 gtk_style_context_push_animatable_region (GtkStyleContext *context,
2906 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
2907 g_return_if_fail (region_id != NULL);
2911 * gtk_style_context_pop_animatable_region:
2912 * @context: a #GtkStyleContext
2914 * Pops an animatable region from @context.
2915 * See gtk_style_context_push_animatable_region().
2919 * Deprecated: 3.6: This function does nothing.
2922 gtk_style_context_pop_animatable_region (GtkStyleContext *context)
2924 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
2928 gtk_style_context_clear_cache (GtkStyleContext *context)
2930 GtkStyleContextPrivate *priv;
2933 priv = context->priv;
2935 for (info = priv->info; info; info = info->next)
2937 style_info_set_data (info, NULL);
2939 g_hash_table_remove_all (priv->style_data);
2943 gtk_style_context_update_cache (GtkStyleContext *context,
2944 const GtkBitmask *parent_changes)
2946 GtkStyleContextPrivate *priv;
2947 GHashTableIter iter;
2948 gpointer key, value;
2950 priv = context->priv;
2952 g_hash_table_remove_all (priv->style_data);
2954 g_hash_table_iter_init (&iter, priv->style_data);
2955 while (g_hash_table_iter_next (&iter, &key, &value))
2957 GtkStyleInfo *info = key;
2958 StyleData *data = value;
2959 GtkBitmask *changes;
2961 changes = _gtk_bitmask_copy (parent_changes);
2962 changes = _gtk_bitmask_intersect (changes, data->store->depends_on_parent);
2963 if (_gtk_bitmask_get (changes, GTK_CSS_PROPERTY_COLOR))
2964 changes = _gtk_bitmask_union (changes, data->store->depends_on_color);
2965 if (_gtk_bitmask_get (changes, GTK_CSS_PROPERTY_FONT_SIZE))
2966 changes = _gtk_bitmask_union (changes, data->store->depends_on_font_size);
2968 build_properties (context, data->store, info->state_flags, changes);
2973 gtk_style_context_do_invalidate (GtkStyleContext *context)
2975 GtkStyleContextPrivate *priv;
2977 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
2979 priv = context->priv;
2981 /* Avoid reentrancy */
2982 if (priv->invalidating_context)
2985 priv->invalidating_context = TRUE;
2987 g_signal_emit (context, signals[CHANGED], 0);
2989 priv->invalidating_context = FALSE;
2993 _gtk_style_context_stop_animations (GtkStyleContext *context)
2995 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
2997 if (!gtk_style_context_is_animating (context))
3000 style_info_set_data (context->priv->info, NULL);
3002 gtk_style_context_stop_animating (context);
3006 gtk_style_context_update_animations (GtkStyleContext *context,
3009 GtkBitmask *differences;
3010 StyleData *style_data;
3012 style_data = style_data_lookup (context);
3014 differences = _gtk_css_animated_values_advance (GTK_CSS_ANIMATED_VALUES (style_data->store),
3017 if (_gtk_css_animated_values_is_finished (GTK_CSS_ANIMATED_VALUES (style_data->store)))
3018 _gtk_style_context_stop_animations (context);
3024 gtk_style_context_should_animate (GtkStyleContext *context)
3026 GtkStyleContextPrivate *priv;
3029 priv = context->priv;
3031 if (priv->widget == NULL)
3034 if (!gtk_widget_get_mapped (priv->widget))
3037 g_object_get (gtk_widget_get_settings (context->priv->widget),
3038 "gtk-enable-animations", &animate,
3045 gtk_style_context_start_animations (GtkStyleContext *context,
3046 GtkCssComputedValues *previous,
3049 StyleData *animated;
3051 if (!gtk_style_context_should_animate (context))
3053 gtk_style_context_stop_animating (context);
3057 animated = style_data_new ();
3058 animated->store = _gtk_css_animated_values_new (style_data_lookup (context)->store,
3063 if (_gtk_css_animated_values_is_finished (GTK_CSS_ANIMATED_VALUES (animated->store)))
3065 style_data_unref (animated);
3066 gtk_style_context_stop_animating (context);
3070 style_info_set_data (context->priv->info, animated);
3071 style_data_unref (animated);
3072 gtk_style_context_start_animating (context);
3076 gtk_style_context_needs_full_revalidate (GtkStyleContext *context,
3077 GtkCssChange change)
3079 GtkStyleContextPrivate *priv = context->priv;
3081 /* Try to avoid invalidating if we can */
3082 if (change & GTK_STYLE_CONTEXT_RADICAL_CHANGE)
3084 priv->relevant_changes = GTK_CSS_CHANGE_ANY;
3088 if (priv->relevant_changes == GTK_CSS_CHANGE_ANY)
3090 GtkWidgetPath *path;
3091 GtkCssMatcher matcher;
3093 path = create_query_path (context);
3094 if (_gtk_css_matcher_init (&matcher, path, priv->info->state_flags))
3095 priv->relevant_changes = _gtk_style_provider_private_get_change (GTK_STYLE_PROVIDER_PRIVATE (priv->cascade),
3098 priv->relevant_changes = 0;
3100 priv->relevant_changes &= ~GTK_STYLE_CONTEXT_RADICAL_CHANGE;
3102 gtk_widget_path_unref (path);
3106 if (priv->relevant_changes & change)
3113 _gtk_style_context_validate (GtkStyleContext *context,
3115 GtkCssChange change,
3116 const GtkBitmask *parent_changes)
3118 GtkStyleContextPrivate *priv;
3121 GtkBitmask *changes;
3124 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3126 priv = context->priv;
3128 change |= priv->pending_changes;
3130 /* If you run your application with
3131 * GTK_DEBUG=no-css-cache
3132 * every invalidation will purge the cache and completely query
3133 * everything anew form the cache. This is slow (in particular
3134 * when animating), but useful for figuring out bugs.
3136 * We achieve that by pretending that everything that could have
3137 * changed has and so we of course totally need to redo everything.
3139 * Note that this also completely revalidates child widgets all
3142 if (G_UNLIKELY (gtk_get_debug_flags () & GTK_DEBUG_NO_CSS_CACHE))
3143 change = GTK_CSS_CHANGE_ANY;
3145 if (!priv->invalid && change == 0 && _gtk_bitmask_is_empty (parent_changes))
3148 priv->pending_changes = 0;
3149 gtk_style_context_set_invalid (context, FALSE);
3153 current = style_data_ref (info->data);
3157 /* Try to avoid invalidating if we can */
3158 if (current == NULL ||
3159 gtk_style_context_needs_full_revalidate (context, change))
3161 if ((priv->relevant_changes & change) & ~GTK_STYLE_CONTEXT_CACHED_CHANGE)
3163 gtk_style_context_clear_cache (context);
3167 gtk_style_context_update_cache (context, parent_changes);
3168 style_info_set_data (info, NULL);
3175 gtk_style_context_start_animations (context, current->store, timestamp);
3176 change &= ~GTK_CSS_CHANGE_ANIMATE;
3178 data = style_data_lookup (context);
3180 changes = _gtk_css_computed_values_get_difference (data->store, current->store);
3184 changes = _gtk_bitmask_new ();
3185 changes = _gtk_bitmask_invert_range (changes, 0, _gtk_css_style_property_get_n_properties ());
3190 changes = _gtk_bitmask_copy (parent_changes);
3191 changes = _gtk_bitmask_intersect (changes, current->store->depends_on_parent);
3192 if (_gtk_bitmask_get (changes, GTK_CSS_PROPERTY_COLOR))
3193 changes = _gtk_bitmask_union (changes, current->store->depends_on_color);
3194 if (_gtk_bitmask_get (changes, GTK_CSS_PROPERTY_FONT_SIZE))
3195 changes = _gtk_bitmask_union (changes, current->store->depends_on_font_size);
3197 gtk_style_context_update_cache (context, parent_changes);
3201 style_data_unref (current);
3203 if (change & GTK_CSS_CHANGE_ANIMATE &&
3204 gtk_style_context_is_animating (context))
3206 GtkBitmask *animation_changes;
3208 animation_changes = gtk_style_context_update_animations (context, timestamp);
3209 changes = _gtk_bitmask_union (changes, animation_changes);
3210 _gtk_bitmask_free (animation_changes);
3213 if (!_gtk_bitmask_is_empty (changes))
3214 gtk_style_context_do_invalidate (context);
3216 change = _gtk_css_change_for_child (change);
3217 for (list = priv->children; list; list = list->next)
3219 _gtk_style_context_validate (list->data, timestamp, change, changes);
3222 _gtk_bitmask_free (changes);
3226 _gtk_style_context_queue_invalidate (GtkStyleContext *context,
3227 GtkCssChange change)
3229 GtkStyleContextPrivate *priv;
3231 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3232 g_return_if_fail (change != 0);
3234 priv = context->priv;
3236 if (priv->widget != NULL)
3238 priv->pending_changes |= change;
3239 gtk_style_context_set_invalid (context, TRUE);
3241 else if (priv->widget_path == NULL)
3243 gtk_style_context_invalidate (context);
3248 * gtk_style_context_invalidate:
3249 * @context: a #GtkStyleContext.
3251 * Invalidates @context style information, so it will be reconstructed
3254 * If you're using a #GtkStyleContext returned from
3255 * gtk_widget_get_style_context(), you do not need to
3256 * call this yourself.
3261 gtk_style_context_invalidate (GtkStyleContext *context)
3263 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3265 gtk_style_context_clear_cache (context);
3266 gtk_style_context_do_invalidate (context);
3270 * gtk_style_context_set_background:
3271 * @context: a #GtkStyleContext
3272 * @window: a #GdkWindow
3274 * Sets the background of @window to the background pattern or
3275 * color specified in @context for its current state.
3280 gtk_style_context_set_background (GtkStyleContext *context,
3283 GtkStateFlags state;
3284 cairo_pattern_t *pattern;
3287 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3288 g_return_if_fail (GDK_IS_WINDOW (window));
3290 state = gtk_style_context_get_state (context);
3291 gtk_style_context_get (context, state,
3292 "background-image", &pattern,
3296 gdk_window_set_background_pattern (window, pattern);
3297 cairo_pattern_destroy (pattern);
3301 gtk_style_context_get (context, state,
3302 "background-color", &color,
3306 gdk_window_set_background_rgba (window, color);
3307 gdk_rgba_free (color);
3312 * gtk_style_context_get_color:
3313 * @context: a #GtkStyleContext
3314 * @state: state to retrieve the color for
3315 * @color: (out): return value for the foreground color
3317 * Gets the foreground color for a given state.
3322 gtk_style_context_get_color (GtkStyleContext *context,
3323 GtkStateFlags state,
3328 g_return_if_fail (color != NULL);
3329 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3331 gtk_style_context_get (context,
3341 * gtk_style_context_get_background_color:
3342 * @context: a #GtkStyleContext
3343 * @state: state to retrieve the color for
3344 * @color: (out): return value for the background color
3346 * Gets the background color for a given state.
3351 gtk_style_context_get_background_color (GtkStyleContext *context,
3352 GtkStateFlags state,
3357 g_return_if_fail (color != NULL);
3358 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3360 gtk_style_context_get (context,
3362 "background-color", &c,
3370 * gtk_style_context_get_border_color:
3371 * @context: a #GtkStyleContext
3372 * @state: state to retrieve the color for
3373 * @color: (out): return value for the border color
3375 * Gets the border color for a given state.
3380 gtk_style_context_get_border_color (GtkStyleContext *context,
3381 GtkStateFlags state,
3386 g_return_if_fail (color != NULL);
3387 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3389 gtk_style_context_get (context,
3399 * gtk_style_context_get_border:
3400 * @context: a #GtkStyleContext
3401 * @state: state to retrieve the border for
3402 * @border: (out): return value for the border settings
3404 * Gets the border for a given state as a #GtkBorder.
3405 * See %GTK_STYLE_PROPERTY_BORDER_WIDTH.
3410 gtk_style_context_get_border (GtkStyleContext *context,
3411 GtkStateFlags state,
3414 int top, left, bottom, right;
3416 g_return_if_fail (border != NULL);
3417 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3419 gtk_style_context_get (context,
3421 "border-top-width", &top,
3422 "border-left-width", &left,
3423 "border-bottom-width", &bottom,
3424 "border-right-width", &right,
3428 border->left = left;
3429 border->bottom = bottom;
3430 border->right = right;
3434 * gtk_style_context_get_padding:
3435 * @context: a #GtkStyleContext
3436 * @state: state to retrieve the padding for
3437 * @padding: (out): return value for the padding settings
3439 * Gets the padding for a given state as a #GtkBorder.
3440 * See %GTK_STYLE_PROPERTY_PADDING.
3445 gtk_style_context_get_padding (GtkStyleContext *context,
3446 GtkStateFlags state,
3449 int top, left, bottom, right;
3451 g_return_if_fail (padding != NULL);
3452 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3454 gtk_style_context_get (context,
3456 "padding-top", &top,
3457 "padding-left", &left,
3458 "padding-bottom", &bottom,
3459 "padding-right", &right,
3463 padding->left = left;
3464 padding->bottom = bottom;
3465 padding->right = right;
3469 * gtk_style_context_get_margin:
3470 * @context: a #GtkStyleContext
3471 * @state: state to retrieve the border for
3472 * @margin: (out): return value for the margin settings
3474 * Gets the margin for a given state as a #GtkBorder.
3475 * See %GTK_STYLE_PROPERTY_MARGIN.
3480 gtk_style_context_get_margin (GtkStyleContext *context,
3481 GtkStateFlags state,
3484 int top, left, bottom, right;
3486 g_return_if_fail (margin != NULL);
3487 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3489 gtk_style_context_get (context,
3492 "margin-left", &left,
3493 "margin-bottom", &bottom,
3494 "margin-right", &right,
3498 margin->left = left;
3499 margin->bottom = bottom;
3500 margin->right = right;
3504 * gtk_style_context_get_font:
3505 * @context: a #GtkStyleContext
3506 * @state: state to retrieve the font for
3508 * Returns the font description for a given state. The returned
3509 * object is const and will remain valid until the
3510 * #GtkStyleContext::changed signal happens.
3512 * Returns: (transfer none): the #PangoFontDescription for the given
3513 * state. This object is owned by GTK+ and should not be
3518 const PangoFontDescription *
3519 gtk_style_context_get_font (GtkStyleContext *context,
3520 GtkStateFlags state)
3522 GtkStyleContextPrivate *priv;
3524 PangoFontDescription *description;
3526 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL);
3528 priv = context->priv;
3529 g_return_val_if_fail (priv->widget != NULL || priv->widget_path != NULL, NULL);
3531 data = style_data_lookup_for_state (context, state);
3533 /* Yuck, fonts are created on-demand but we don't return a ref.
3534 * Do bad things to achieve this requirement */
3535 description = g_object_get_data (G_OBJECT (data->store), "font-cache-for-get_font");
3536 if (description == NULL)
3538 gtk_style_context_get (context, state, "font", &description, NULL);
3539 g_object_set_data_full (G_OBJECT (data->store),
3540 "font-cache-for-get_font",
3542 (GDestroyNotify) pango_font_description_free);
3548 get_cursor_color (GtkStyleContext *context,
3552 GdkColor *style_color;
3554 gtk_style_context_get_style (context,
3555 primary ? "cursor-color" : "secondary-cursor-color",
3561 color->red = style_color->red / 65535.0;
3562 color->green = style_color->green / 65535.0;
3563 color->blue = style_color->blue / 65535.0;
3566 gdk_color_free (style_color);
3570 gtk_style_context_get_color (context, GTK_STATE_FLAG_NORMAL, color);
3576 gtk_style_context_get_background_color (context, GTK_STATE_FLAG_NORMAL, &bg);
3578 color->red = (color->red + bg.red) * 0.5;
3579 color->green = (color->green + bg.green) * 0.5;
3580 color->blue = (color->blue + bg.blue) * 0.5;
3586 _gtk_style_context_get_cursor_color (GtkStyleContext *context,
3587 GdkRGBA *primary_color,
3588 GdkRGBA *secondary_color)
3591 get_cursor_color (context, TRUE, primary_color);
3593 if (secondary_color)
3594 get_cursor_color (context, FALSE, secondary_color);
3601 * @context: a #GtkStyleContext
3603 * @x: X origin of the rectangle
3604 * @y: Y origin of the rectangle
3605 * @width: rectangle width
3606 * @height: rectangle height
3608 * Renders a checkmark (as in a #GtkCheckButton).
3610 * The %GTK_STATE_FLAG_ACTIVE state determines whether the check is
3611 * on or off, and %GTK_STATE_FLAG_INCONSISTENT determines whether it
3612 * should be marked as undefined.
3615 * <title>Typical checkmark rendering</title>
3616 * <inlinegraphic fileref="checks.png" format="PNG"/>
3622 gtk_render_check (GtkStyleContext *context,
3629 GtkThemingEngineClass *engine_class;
3630 GtkThemingEngine *engine;
3632 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3633 g_return_if_fail (cr != NULL);
3635 if (width <= 0 || height <= 0)
3638 engine = _gtk_css_engine_value_get_engine (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ENGINE));
3639 engine_class = GTK_THEMING_ENGINE_GET_CLASS (engine);
3644 _gtk_theming_engine_set_context (engine, context);
3645 engine_class->render_check (engine, cr,
3646 x, y, width, height);
3652 * gtk_render_option:
3653 * @context: a #GtkStyleContext
3655 * @x: X origin of the rectangle
3656 * @y: Y origin of the rectangle
3657 * @width: rectangle width
3658 * @height: rectangle height
3660 * Renders an option mark (as in a #GtkRadioButton), the %GTK_STATE_FLAG_ACTIVE
3661 * state will determine whether the option is on or off, and
3662 * %GTK_STATE_FLAG_INCONSISTENT whether it should be marked as undefined.
3665 * <title>Typical option mark rendering</title>
3666 * <inlinegraphic fileref="options.png" format="PNG"/>
3672 gtk_render_option (GtkStyleContext *context,
3679 GtkThemingEngineClass *engine_class;
3680 GtkThemingEngine *engine;
3682 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3683 g_return_if_fail (cr != NULL);
3685 if (width <= 0 || height <= 0)
3688 engine = _gtk_css_engine_value_get_engine (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ENGINE));
3689 engine_class = GTK_THEMING_ENGINE_GET_CLASS (engine);
3693 _gtk_theming_engine_set_context (engine, context);
3694 engine_class->render_option (engine, cr,
3695 x, y, width, height);
3702 * @context: a #GtkStyleContext
3704 * @angle: arrow angle from 0 to 2 * %G_PI, being 0 the arrow pointing to the north
3705 * @x: X origin of the render area
3706 * @y: Y origin of the render area
3707 * @size: square side for render area
3709 * Renders an arrow pointing to @angle.
3712 * <title>Typical arrow rendering at 0, 1&solidus;2 π, π and 3&solidus;2 π</title>
3713 * <inlinegraphic fileref="arrows.png" format="PNG"/>
3719 gtk_render_arrow (GtkStyleContext *context,
3726 GtkThemingEngineClass *engine_class;
3727 GtkThemingEngine *engine;
3729 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3730 g_return_if_fail (cr != NULL);
3735 engine = _gtk_css_engine_value_get_engine (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ENGINE));
3736 engine_class = GTK_THEMING_ENGINE_GET_CLASS (engine);
3740 gtk_style_context_save (context);
3741 gtk_style_context_add_class (context, GTK_STYLE_CLASS_ARROW);
3743 _gtk_theming_engine_set_context (engine, context);
3744 engine_class->render_arrow (engine, cr,
3747 gtk_style_context_restore (context);
3752 * gtk_render_background:
3753 * @context: a #GtkStyleContext
3755 * @x: X origin of the rectangle
3756 * @y: Y origin of the rectangle
3757 * @width: rectangle width
3758 * @height: rectangle height
3760 * Renders the background of an element.
3763 * <title>Typical background rendering, showing the effect of
3764 * <parameter>background-image</parameter>,
3765 * <parameter>border-width</parameter> and
3766 * <parameter>border-radius</parameter></title>
3767 * <inlinegraphic fileref="background.png" format="PNG"/>
3773 gtk_render_background (GtkStyleContext *context,
3780 GtkThemingEngineClass *engine_class;
3781 GtkThemingEngine *engine;
3783 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3784 g_return_if_fail (cr != NULL);
3786 if (width <= 0 || height <= 0)
3789 engine = _gtk_css_engine_value_get_engine (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ENGINE));
3790 engine_class = GTK_THEMING_ENGINE_GET_CLASS (engine);
3794 _gtk_theming_engine_set_context (engine, context);
3795 engine_class->render_background (engine, cr, x, y, width, height);
3802 * @context: a #GtkStyleContext
3804 * @x: X origin of the rectangle
3805 * @y: Y origin of the rectangle
3806 * @width: rectangle width
3807 * @height: rectangle height
3809 * Renders a frame around the rectangle defined by @x, @y, @width, @height.
3812 * <title>Examples of frame rendering, showing the effect of
3813 * <parameter>border-image</parameter>,
3814 * <parameter>border-color</parameter>,
3815 * <parameter>border-width</parameter>,
3816 * <parameter>border-radius</parameter> and
3818 * <inlinegraphic fileref="frames.png" format="PNG"/>
3824 gtk_render_frame (GtkStyleContext *context,
3831 GtkThemingEngineClass *engine_class;
3832 GtkThemingEngine *engine;
3834 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3835 g_return_if_fail (cr != NULL);
3837 if (width <= 0 || height <= 0)
3840 engine = _gtk_css_engine_value_get_engine (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ENGINE));
3841 engine_class = GTK_THEMING_ENGINE_GET_CLASS (engine);
3845 _gtk_theming_engine_set_context (engine, context);
3846 engine_class->render_frame (engine, cr, x, y, width, height);
3852 * gtk_render_expander:
3853 * @context: a #GtkStyleContext
3855 * @x: X origin of the rectangle
3856 * @y: Y origin of the rectangle
3857 * @width: rectangle width
3858 * @height: rectangle height
3860 * Renders an expander (as used in #GtkTreeView and #GtkExpander) in the area
3861 * defined by @x, @y, @width, @height. The state %GTK_STATE_FLAG_ACTIVE
3862 * determines whether the expander is collapsed or expanded.
3865 * <title>Typical expander rendering</title>
3866 * <inlinegraphic fileref="expanders.png" format="PNG"/>
3872 gtk_render_expander (GtkStyleContext *context,
3879 GtkThemingEngineClass *engine_class;
3880 GtkThemingEngine *engine;
3882 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3883 g_return_if_fail (cr != NULL);
3885 if (width <= 0 || height <= 0)
3888 engine = _gtk_css_engine_value_get_engine (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ENGINE));
3889 engine_class = GTK_THEMING_ENGINE_GET_CLASS (engine);
3893 _gtk_theming_engine_set_context (engine, context);
3894 engine_class->render_expander (engine, cr, x, y, width, height);
3901 * @context: a #GtkStyleContext
3903 * @x: X origin of the rectangle
3904 * @y: Y origin of the rectangle
3905 * @width: rectangle width
3906 * @height: rectangle height
3908 * Renders a focus indicator on the rectangle determined by @x, @y, @width, @height.
3910 * <title>Typical focus rendering</title>
3911 * <inlinegraphic fileref="focus.png" format="PNG"/>
3917 gtk_render_focus (GtkStyleContext *context,
3924 GtkThemingEngineClass *engine_class;
3925 GtkThemingEngine *engine;
3927 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3928 g_return_if_fail (cr != NULL);
3930 if (width <= 0 || height <= 0)
3933 engine = _gtk_css_engine_value_get_engine (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ENGINE));
3934 engine_class = GTK_THEMING_ENGINE_GET_CLASS (engine);
3938 _gtk_theming_engine_set_context (engine, context);
3939 engine_class->render_focus (engine, cr, x, y, width, height);
3945 * gtk_render_layout:
3946 * @context: a #GtkStyleContext
3950 * @layout: the #PangoLayout to render
3952 * Renders @layout on the coordinates @x, @y
3957 gtk_render_layout (GtkStyleContext *context,
3961 PangoLayout *layout)
3963 GtkThemingEngineClass *engine_class;
3964 GtkThemingEngine *engine;
3965 PangoRectangle extents;
3967 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
3968 g_return_if_fail (PANGO_IS_LAYOUT (layout));
3969 g_return_if_fail (cr != NULL);
3971 engine = _gtk_css_engine_value_get_engine (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ENGINE));
3972 engine_class = GTK_THEMING_ENGINE_GET_CLASS (engine);
3976 pango_layout_get_extents (layout, &extents, NULL);
3978 _gtk_theming_engine_set_context (engine, context);
3979 engine_class->render_layout (engine, cr, x, y, layout);
3986 * @context: a #GtkStyleContext
3988 * @x0: X coordinate for the origin of the line
3989 * @y0: Y coordinate for the origin of the line
3990 * @x1: X coordinate for the end of the line
3991 * @y1: Y coordinate for the end of the line
3993 * Renders a line from (x0, y0) to (x1, y1).
3998 gtk_render_line (GtkStyleContext *context,
4005 GtkThemingEngineClass *engine_class;
4006 GtkThemingEngine *engine;
4008 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
4009 g_return_if_fail (cr != NULL);
4011 engine = _gtk_css_engine_value_get_engine (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ENGINE));
4012 engine_class = GTK_THEMING_ENGINE_GET_CLASS (engine);
4016 _gtk_theming_engine_set_context (engine, context);
4017 engine_class->render_line (engine, cr, x0, y0, x1, y1);
4023 * gtk_render_slider:
4024 * @context: a #GtkStyleContext
4026 * @x: X origin of the rectangle
4027 * @y: Y origin of the rectangle
4028 * @width: rectangle width
4029 * @height: rectangle height
4030 * @orientation: orientation of the slider
4032 * Renders a slider (as in #GtkScale) in the rectangle defined by @x, @y,
4033 * @width, @height. @orientation defines whether the slider is vertical
4037 * <title>Typical slider rendering</title>
4038 * <inlinegraphic fileref="sliders.png" format="PNG"/>
4044 gtk_render_slider (GtkStyleContext *context,
4050 GtkOrientation orientation)
4052 GtkThemingEngineClass *engine_class;
4053 GtkThemingEngine *engine;
4055 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
4056 g_return_if_fail (cr != NULL);
4058 if (width <= 0 || height <= 0)
4061 engine = _gtk_css_engine_value_get_engine (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ENGINE));
4062 engine_class = GTK_THEMING_ENGINE_GET_CLASS (engine);
4066 _gtk_theming_engine_set_context (engine, context);
4067 engine_class->render_slider (engine, cr, x, y, width, height, orientation);
4073 * gtk_render_frame_gap:
4074 * @context: a #GtkStyleContext
4076 * @x: X origin of the rectangle
4077 * @y: Y origin of the rectangle
4078 * @width: rectangle width
4079 * @height: rectangle height
4080 * @gap_side: side where the gap is
4081 * @xy0_gap: initial coordinate (X or Y depending on @gap_side) for the gap
4082 * @xy1_gap: end coordinate (X or Y depending on @gap_side) for the gap
4084 * Renders a frame around the rectangle defined by (@x, @y, @width, @height),
4085 * leaving a gap on one side. @xy0_gap and @xy1_gap will mean X coordinates
4086 * for %GTK_POS_TOP and %GTK_POS_BOTTOM gap sides, and Y coordinates for
4087 * %GTK_POS_LEFT and %GTK_POS_RIGHT.
4090 * <title>Typical rendering of a frame with a gap</title>
4091 * <inlinegraphic fileref="frame-gap.png" format="PNG"/>
4097 gtk_render_frame_gap (GtkStyleContext *context,
4103 GtkPositionType gap_side,
4107 GtkThemingEngineClass *engine_class;
4108 GtkThemingEngine *engine;
4110 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
4111 g_return_if_fail (cr != NULL);
4112 g_return_if_fail (xy0_gap <= xy1_gap);
4113 g_return_if_fail (xy0_gap >= 0);
4115 if (width <= 0 || height <= 0)
4118 if (gap_side == GTK_POS_LEFT ||
4119 gap_side == GTK_POS_RIGHT)
4120 g_return_if_fail (xy1_gap <= height);
4122 g_return_if_fail (xy1_gap <= width);
4124 engine = _gtk_css_engine_value_get_engine (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ENGINE));
4125 engine_class = GTK_THEMING_ENGINE_GET_CLASS (engine);
4129 _gtk_theming_engine_set_context (engine, context);
4130 engine_class->render_frame_gap (engine, cr,
4131 x, y, width, height, gap_side,
4138 * gtk_render_extension:
4139 * @context: a #GtkStyleContext
4141 * @x: X origin of the rectangle
4142 * @y: Y origin of the rectangle
4143 * @width: rectangle width
4144 * @height: rectangle height
4145 * @gap_side: side where the gap is
4147 * Renders a extension (as in a #GtkNotebook tab) in the rectangle
4148 * defined by @x, @y, @width, @height. The side where the extension
4149 * connects to is defined by @gap_side.
4152 * <title>Typical extension rendering</title>
4153 * <inlinegraphic fileref="extensions.png" format="PNG"/>
4159 gtk_render_extension (GtkStyleContext *context,
4165 GtkPositionType gap_side)
4167 GtkThemingEngineClass *engine_class;
4168 GtkThemingEngine *engine;
4170 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
4171 g_return_if_fail (cr != NULL);
4173 if (width <= 0 || height <= 0)
4176 engine = _gtk_css_engine_value_get_engine (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ENGINE));
4177 engine_class = GTK_THEMING_ENGINE_GET_CLASS (engine);
4181 _gtk_theming_engine_set_context (engine, context);
4182 engine_class->render_extension (engine, cr, x, y, width, height, gap_side);
4188 * gtk_render_handle:
4189 * @context: a #GtkStyleContext
4191 * @x: X origin of the rectangle
4192 * @y: Y origin of the rectangle
4193 * @width: rectangle width
4194 * @height: rectangle height
4196 * Renders a handle (as in #GtkHandleBox, #GtkPaned and
4197 * #GtkWindow<!-- -->'s resize grip), in the rectangle
4198 * determined by @x, @y, @width, @height.
4201 * <title>Handles rendered for the paned and grip classes</title>
4202 * <inlinegraphic fileref="handles.png" format="PNG"/>
4208 gtk_render_handle (GtkStyleContext *context,
4215 GtkThemingEngineClass *engine_class;
4216 GtkThemingEngine *engine;
4218 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
4219 g_return_if_fail (cr != NULL);
4221 if (width <= 0 || height <= 0)
4224 engine = _gtk_css_engine_value_get_engine (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ENGINE));
4225 engine_class = GTK_THEMING_ENGINE_GET_CLASS (engine);
4229 _gtk_theming_engine_set_context (engine, context);
4230 engine_class->render_handle (engine, cr, x, y, width, height);
4236 * gtk_render_activity:
4237 * @context: a #GtkStyleContext
4239 * @x: X origin of the rectangle
4240 * @y: Y origin of the rectangle
4241 * @width: rectangle width
4242 * @height: rectangle height
4244 * Renders an activity area (Such as in #GtkSpinner or the
4245 * fill line in #GtkRange), the state %GTK_STATE_FLAG_ACTIVE
4246 * determines whether there is activity going on.
4251 gtk_render_activity (GtkStyleContext *context,
4258 GtkThemingEngineClass *engine_class;
4259 GtkThemingEngine *engine;
4261 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
4262 g_return_if_fail (cr != NULL);
4264 if (width <= 0 || height <= 0)
4267 engine = _gtk_css_engine_value_get_engine (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ENGINE));
4268 engine_class = GTK_THEMING_ENGINE_GET_CLASS (engine);
4272 _gtk_theming_engine_set_context (engine, context);
4273 engine_class->render_activity (engine, cr, x, y, width, height);
4279 * gtk_render_icon_pixbuf:
4280 * @context: a #GtkStyleContext
4281 * @source: the #GtkIconSource specifying the icon to render
4282 * @size: (type int): the size to render the icon at. A size of (GtkIconSize) -1
4283 * means render at the size of the source and don't scale.
4285 * Renders the icon specified by @source at the given @size, returning the result
4288 * Returns: (transfer full): a newly-created #GdkPixbuf containing the rendered icon
4293 gtk_render_icon_pixbuf (GtkStyleContext *context,
4294 const GtkIconSource *source,
4297 GtkThemingEngineClass *engine_class;
4298 GtkThemingEngine *engine;
4300 g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL);
4301 g_return_val_if_fail (size > GTK_ICON_SIZE_INVALID || size == -1, NULL);
4302 g_return_val_if_fail (source != NULL, NULL);
4304 engine = _gtk_css_engine_value_get_engine (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ENGINE));
4305 engine_class = GTK_THEMING_ENGINE_GET_CLASS (engine);
4307 _gtk_theming_engine_set_context (engine, context);
4308 return engine_class->render_icon_pixbuf (engine, source, size);
4313 * @context: a #GtkStyleContext
4315 * @pixbuf: a #GdkPixbuf containing the icon to draw
4316 * @x: X position for the @pixbuf
4317 * @y: Y position for the @pixbuf
4319 * Renders the icon in @pixbuf at the specified @x and @y coordinates.
4324 gtk_render_icon (GtkStyleContext *context,
4330 GtkThemingEngineClass *engine_class;
4331 GtkThemingEngine *engine;
4333 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
4334 g_return_if_fail (cr != NULL);
4336 engine = _gtk_css_engine_value_get_engine (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ENGINE));
4337 engine_class = GTK_THEMING_ENGINE_GET_CLASS (engine);
4341 _gtk_theming_engine_set_context (engine, context);
4342 engine_class->render_icon (engine, cr, pixbuf, x, y);
4348 draw_insertion_cursor (GtkStyleContext *context,
4353 gboolean is_primary,
4354 PangoDirection direction,
4355 gboolean draw_arrow)
4358 GdkRGBA primary_color;
4359 GdkRGBA secondary_color;
4360 gfloat cursor_aspect_ratio;
4366 _gtk_style_context_get_cursor_color (context, &primary_color, &secondary_color);
4367 gdk_cairo_set_source_rgba (cr, is_primary ? &primary_color : &secondary_color);
4369 /* When changing the shape or size of the cursor here,
4370 * propagate the changes to gtktextview.c:text_window_invalidate_cursors().
4373 gtk_style_context_get_style (context,
4374 "cursor-aspect-ratio", &cursor_aspect_ratio,
4377 stem_width = height * cursor_aspect_ratio + 1;
4379 /* put (stem_width % 2) on the proper side of the cursor */
4380 if (direction == PANGO_DIRECTION_LTR)
4381 offset = stem_width / 2;
4383 offset = stem_width - stem_width / 2;
4385 cairo_rectangle (cr, x - offset, y, stem_width, height);
4393 arrow_width = stem_width + 1;
4395 if (direction == PANGO_DIRECTION_RTL)
4397 ax = x - offset - 1;
4398 ay = y + height - arrow_width * 2 - arrow_width + 1;
4400 cairo_move_to (cr, ax, ay + 1);
4401 cairo_line_to (cr, ax - arrow_width, ay + arrow_width);
4402 cairo_line_to (cr, ax, ay + 2 * arrow_width);
4405 else if (direction == PANGO_DIRECTION_LTR)
4407 ax = x + stem_width - offset;
4408 ay = y + height - arrow_width * 2 - arrow_width + 1;
4410 cairo_move_to (cr, ax, ay + 1);
4411 cairo_line_to (cr, ax + arrow_width, ay + arrow_width);
4412 cairo_line_to (cr, ax, ay + 2 * arrow_width);
4416 g_assert_not_reached();
4423 * gtk_render_insertion_cursor:
4424 * @context: a #GtkStyleContext
4428 * @layout: the #PangoLayout of the text
4429 * @index: the index in the #PangoLayout
4430 * @direction: the #PangoDirection of the text
4432 * Draws a text caret on @cr at the specified index of @layout.
4437 gtk_render_insertion_cursor (GtkStyleContext *context,
4441 PangoLayout *layout,
4443 PangoDirection direction)
4445 GtkStyleContextPrivate *priv;
4446 gboolean split_cursor;
4447 PangoRectangle strong_pos, weak_pos;
4448 PangoRectangle *cursor1, *cursor2;
4449 PangoDirection keymap_direction;
4450 PangoDirection direction2;
4452 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
4453 g_return_if_fail (cr != NULL);
4454 g_return_if_fail (PANGO_IS_LAYOUT (layout));
4455 g_return_if_fail (index >= 0);
4457 priv = context->priv;
4459 g_object_get (gtk_settings_get_for_screen (priv->screen),
4460 "gtk-split-cursor", &split_cursor,
4463 keymap_direction = gdk_keymap_get_direction (gdk_keymap_get_for_display (gdk_screen_get_display (priv->screen)));
4465 pango_layout_get_cursor_pos (layout, index, &strong_pos, &weak_pos);
4467 direction2 = PANGO_DIRECTION_NEUTRAL;
4471 cursor1 = &strong_pos;
4473 if (strong_pos.x != weak_pos.x || strong_pos.y != weak_pos.y)
4475 direction2 = (direction == PANGO_DIRECTION_LTR) ? PANGO_DIRECTION_RTL : PANGO_DIRECTION_LTR;
4476 cursor2 = &weak_pos;
4481 if (keymap_direction == direction)
4482 cursor1 = &strong_pos;
4484 cursor1 = &weak_pos;
4487 draw_insertion_cursor (context,
4489 x + PANGO_PIXELS (cursor1->x),
4490 y + PANGO_PIXELS (cursor1->y),
4491 PANGO_PIXELS (cursor1->height),
4494 direction2 != PANGO_DIRECTION_NEUTRAL);
4496 if (direction2 != PANGO_DIRECTION_NEUTRAL)
4498 draw_insertion_cursor (context,
4500 x + PANGO_PIXELS (cursor2->x),
4501 y + PANGO_PIXELS (cursor2->y),
4502 PANGO_PIXELS (cursor2->height),
4510 * gtk_draw_insertion_cursor:
4511 * @widget: a #GtkWidget
4512 * @cr: cairo context to draw to
4513 * @location: location where to draw the cursor (@location->width is ignored)
4514 * @is_primary: if the cursor should be the primary cursor color.
4515 * @direction: whether the cursor is left-to-right or
4516 * right-to-left. Should never be #GTK_TEXT_DIR_NONE
4517 * @draw_arrow: %TRUE to draw a directional arrow on the
4518 * cursor. Should be %FALSE unless the cursor is split.
4520 * Draws a text caret on @cr at @location. This is not a style function
4521 * but merely a convenience function for drawing the standard cursor shape.
4524 * Deprecated: 3.4: Use gtk_render_insertion_cursor() instead.
4527 gtk_draw_insertion_cursor (GtkWidget *widget,
4529 const GdkRectangle *location,
4530 gboolean is_primary,
4531 GtkTextDirection direction,
4532 gboolean draw_arrow)
4534 GtkStyleContext *context;
4536 g_return_if_fail (GTK_IS_WIDGET (widget));
4537 g_return_if_fail (cr != NULL);
4538 g_return_if_fail (location != NULL);
4539 g_return_if_fail (direction != GTK_TEXT_DIR_NONE);
4541 context = gtk_widget_get_style_context (widget);
4543 draw_insertion_cursor (context, cr,
4544 location->x, location->y, location->height,
4546 (direction == GTK_TEXT_DIR_RTL) ? PANGO_DIRECTION_RTL : PANGO_DIRECTION_LTR,
4550 static AtkAttributeSet *
4551 add_attribute (AtkAttributeSet *attributes,
4552 AtkTextAttribute attr,
4557 at = g_new (AtkAttribute, 1);
4558 at->name = g_strdup (atk_text_attribute_get_name (attr));
4559 at->value = g_strdup (value);
4561 return g_slist_prepend (attributes, at);
4565 * _gtk_style_context_get_attributes:
4566 * @attributes: a #AtkAttributeSet to add attributes to
4567 * @context: the #GtkStyleContext to get attributes from
4568 * @flags: the state to use with @context
4570 * Adds the foreground and background color from @context to
4571 * @attributes, after translating them to ATK attributes.
4573 * This is a convenience function that can be used in
4574 * implementing the #AtkText interface in widgets.
4576 * Returns: the modified #AtkAttributeSet
4579 _gtk_style_context_get_attributes (AtkAttributeSet *attributes,
4580 GtkStyleContext *context,
4581 GtkStateFlags flags)
4586 gtk_style_context_get_background_color (context, flags, &color);
4587 value = g_strdup_printf ("%u,%u,%u",
4588 (guint) ceil (color.red * 65536 - color.red),
4589 (guint) ceil (color.green * 65536 - color.green),
4590 (guint) ceil (color.blue * 65536 - color.blue));
4591 attributes = add_attribute (attributes, ATK_TEXT_ATTR_BG_COLOR, value);
4594 gtk_style_context_get_color (context, flags, &color);
4595 value = g_strdup_printf ("%u,%u,%u",
4596 (guint) ceil (color.red * 65536 - color.red),
4597 (guint) ceil (color.green * 65536 - color.green),
4598 (guint) ceil (color.blue * 65536 - color.blue));
4599 attributes = add_attribute (attributes, ATK_TEXT_ATTR_FG_COLOR, value);