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 <gtk/gtkthemingengine.h>
24 #include <gtk/gtkstylecontext.h>
25 #include <gtk/gtkintl.h>
27 #include "gtkprivate.h"
28 #include "gtkmodulesprivate.h"
29 #include "gtkborderimageprivate.h"
31 #include "gtkcssarrayvalueprivate.h"
32 #include "gtkcsscornervalueprivate.h"
33 #include "gtkcssenumvalueprivate.h"
34 #include "gtkcssnumbervalueprivate.h"
35 #include "gtkcssrgbavalueprivate.h"
36 #include "gtkcssshadowsvalueprivate.h"
37 #include "gtkcsstypesprivate.h"
38 #include "gtkthemingengineprivate.h"
39 #include "gtkroundedboxprivate.h"
40 #include "gtkthemingbackgroundprivate.h"
42 #include "fallback-c89.c"
45 * SECTION:gtkthemingengine
46 * @Short_description: Theming renderers
47 * @Title: GtkThemingEngine
48 * @See_also: #GtkStyleContext
50 * #GtkThemingEngine is the object used for rendering themed content
51 * in GTK+ widgets. Even though GTK+ has a default implementation,
52 * it can be overridden in CSS files by enforcing a #GtkThemingEngine
53 * object to be loaded as a module.
55 * In order to implement a theming engine, a #GtkThemingEngine subclass
56 * must be created, alongside the CSS file that will reference it, the
57 * theming engine would be created as an .so library, and installed in
58 * $(gtk-modules-dir)/theming-engines/.
60 * #GtkThemingEngine<!-- -->s have limited access to the object they are
61 * rendering, the #GtkThemingEngine API has read-only accessors to the
62 * style information contained in the rendered object's #GtkStyleContext.
70 struct GtkThemingEnginePrivate
72 GtkStyleContext *context;
76 #define GTK_THEMING_ENGINE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_THEMING_ENGINE, GtkThemingEnginePrivate))
78 static void gtk_theming_engine_finalize (GObject *object);
79 static void gtk_theming_engine_impl_set_property (GObject *object,
83 static void gtk_theming_engine_impl_get_property (GObject *object,
88 static void gtk_theming_engine_render_check (GtkThemingEngine *engine,
94 static void gtk_theming_engine_render_option (GtkThemingEngine *engine,
100 static void gtk_theming_engine_render_arrow (GtkThemingEngine *engine,
106 static void gtk_theming_engine_render_background (GtkThemingEngine *engine,
112 static void gtk_theming_engine_render_frame (GtkThemingEngine *engine,
118 static void gtk_theming_engine_render_expander (GtkThemingEngine *engine,
124 static void gtk_theming_engine_render_focus (GtkThemingEngine *engine,
130 static void gtk_theming_engine_render_layout (GtkThemingEngine *engine,
134 PangoLayout *layout);
135 static void gtk_theming_engine_render_line (GtkThemingEngine *engine,
141 static void gtk_theming_engine_render_slider (GtkThemingEngine *engine,
147 GtkOrientation orientation);
148 static void gtk_theming_engine_render_frame_gap (GtkThemingEngine *engine,
154 GtkPositionType gap_side,
157 static void gtk_theming_engine_render_extension (GtkThemingEngine *engine,
163 GtkPositionType gap_side);
164 static void gtk_theming_engine_render_handle (GtkThemingEngine *engine,
170 static void gtk_theming_engine_render_activity (GtkThemingEngine *engine,
176 static GdkPixbuf * gtk_theming_engine_render_icon_pixbuf (GtkThemingEngine *engine,
177 const GtkIconSource *source,
179 static void gtk_theming_engine_render_icon (GtkThemingEngine *engine,
185 G_DEFINE_TYPE (GtkThemingEngine, gtk_theming_engine, G_TYPE_OBJECT)
188 typedef struct GtkThemingModule GtkThemingModule;
189 typedef struct GtkThemingModuleClass GtkThemingModuleClass;
191 struct GtkThemingModule
193 GTypeModule parent_instance;
197 void (*init) (GTypeModule *module);
199 GtkThemingEngine * (*create_engine) (void);
202 struct GtkThemingModuleClass
204 GTypeModuleClass parent_class;
207 #define GTK_TYPE_THEMING_MODULE (gtk_theming_module_get_type ())
208 #define GTK_THEMING_MODULE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_THEMING_MODULE, GtkThemingModule))
209 #define GTK_IS_THEMING_MODULE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_THEMING_MODULE))
211 GType gtk_theming_module_get_type (void);
213 G_DEFINE_TYPE (GtkThemingModule, gtk_theming_module, G_TYPE_TYPE_MODULE);
216 gtk_theming_engine_class_init (GtkThemingEngineClass *klass)
218 GObjectClass *object_class = G_OBJECT_CLASS (klass);
220 object_class->finalize = gtk_theming_engine_finalize;
221 object_class->set_property = gtk_theming_engine_impl_set_property;
222 object_class->get_property = gtk_theming_engine_impl_get_property;
224 klass->render_icon = gtk_theming_engine_render_icon;
225 klass->render_check = gtk_theming_engine_render_check;
226 klass->render_option = gtk_theming_engine_render_option;
227 klass->render_arrow = gtk_theming_engine_render_arrow;
228 klass->render_background = gtk_theming_engine_render_background;
229 klass->render_frame = gtk_theming_engine_render_frame;
230 klass->render_expander = gtk_theming_engine_render_expander;
231 klass->render_focus = gtk_theming_engine_render_focus;
232 klass->render_layout = gtk_theming_engine_render_layout;
233 klass->render_line = gtk_theming_engine_render_line;
234 klass->render_slider = gtk_theming_engine_render_slider;
235 klass->render_frame_gap = gtk_theming_engine_render_frame_gap;
236 klass->render_extension = gtk_theming_engine_render_extension;
237 klass->render_handle = gtk_theming_engine_render_handle;
238 klass->render_activity = gtk_theming_engine_render_activity;
239 klass->render_icon_pixbuf = gtk_theming_engine_render_icon_pixbuf;
242 * GtkThemingEngine:name:
244 * The theming engine name, this name will be used when registering
245 * custom properties, for a theming engine named "Clearlooks" registering
246 * a "glossy" custom property, it could be referenced in the CSS file as
249 * -Clearlooks-glossy: true;
254 g_object_class_install_property (object_class,
256 g_param_spec_string ("name",
258 P_("Theming engine name"),
260 G_PARAM_CONSTRUCT_ONLY | GTK_PARAM_READWRITE));
262 g_type_class_add_private (object_class, sizeof (GtkThemingEnginePrivate));
266 gtk_theming_engine_init (GtkThemingEngine *engine)
268 engine->priv = GTK_THEMING_ENGINE_GET_PRIVATE (engine);
272 gtk_theming_engine_finalize (GObject *object)
274 GtkThemingEnginePrivate *priv;
276 priv = GTK_THEMING_ENGINE (object)->priv;
279 G_OBJECT_GET_CLASS (gtk_theming_engine_parent_class)->finalize (object);
283 gtk_theming_engine_impl_set_property (GObject *object,
288 GtkThemingEnginePrivate *priv;
290 priv = GTK_THEMING_ENGINE (object)->priv;
298 priv->name = g_value_dup_string (value);
301 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
307 gtk_theming_engine_impl_get_property (GObject *object,
312 GtkThemingEnginePrivate *priv;
314 priv = GTK_THEMING_ENGINE (object)->priv;
319 g_value_set_string (value, priv->name);
322 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
328 _gtk_theming_engine_set_context (GtkThemingEngine *engine,
329 GtkStyleContext *context)
331 GtkThemingEnginePrivate *priv;
333 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
334 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
337 priv->context = context;
341 _gtk_theming_engine_get_context (GtkThemingEngine *engine)
343 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
345 return engine->priv->context;
349 _gtk_theming_engine_peek_property (GtkThemingEngine *engine,
352 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
354 return _gtk_style_context_peek_property (engine->priv->context, property_id);
358 _gtk_theming_engine_get_number (GtkThemingEngine *engine,
360 double one_hundred_percent)
362 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0.0);
364 return _gtk_style_context_get_number (engine->priv->context, property_id, one_hundred_percent);
368 * gtk_theming_engine_get_property:
369 * @engine: a #GtkThemingEngine
370 * @property: the property name
371 * @state: state to retrieve the value for
372 * @value: (out) (transfer full): return location for the property value,
373 * you must free this memory using g_value_unset() once you are
376 * Gets a property value as retrieved from the style settings that apply
377 * to the currently rendered element.
382 gtk_theming_engine_get_property (GtkThemingEngine *engine,
383 const gchar *property,
387 GtkThemingEnginePrivate *priv;
389 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
390 g_return_if_fail (property != NULL);
391 g_return_if_fail (value != NULL);
394 gtk_style_context_get_property (priv->context, property, state, value);
398 * gtk_theming_engine_get_valist:
399 * @engine: a #GtkThemingEngine
400 * @state: state to retrieve values for
401 * @args: va_list of property name/return location pairs, followed by %NULL
403 * Retrieves several style property values that apply to the currently
409 gtk_theming_engine_get_valist (GtkThemingEngine *engine,
413 GtkThemingEnginePrivate *priv;
415 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
418 gtk_style_context_get_valist (priv->context, state, args);
422 * gtk_theming_engine_get:
423 * @engine: a #GtkThemingEngine
424 * @state: state to retrieve values for
425 * @...: property name /return value pairs, followed by %NULL
427 * Retrieves several style property values that apply to the currently
433 gtk_theming_engine_get (GtkThemingEngine *engine,
437 GtkThemingEnginePrivate *priv;
440 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
444 va_start (args, state);
445 gtk_style_context_get_valist (priv->context, state, args);
450 * gtk_theming_engine_get_style_property:
451 * @engine: a #GtkThemingEngine
452 * @property_name: the name of the widget style property
453 * @value: Return location for the property value, free with
454 * g_value_unset() after use.
456 * Gets the value for a widget style property.
461 gtk_theming_engine_get_style_property (GtkThemingEngine *engine,
462 const gchar *property_name,
465 GtkThemingEnginePrivate *priv;
467 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
468 g_return_if_fail (property_name != NULL);
471 gtk_style_context_get_style_property (priv->context, property_name, value);
475 * gtk_theming_engine_get_style_valist:
476 * @engine: a #GtkThemingEngine
477 * @args: va_list of property name/return location pairs, followed by %NULL
479 * Retrieves several widget style properties from @engine according to the
480 * currently rendered content's style.
485 gtk_theming_engine_get_style_valist (GtkThemingEngine *engine,
488 GtkThemingEnginePrivate *priv;
490 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
493 gtk_style_context_get_style_valist (priv->context, args);
497 * gtk_theming_engine_get_style:
498 * @engine: a #GtkThemingEngine
499 * @...: property name /return value pairs, followed by %NULL
501 * Retrieves several widget style properties from @engine according
502 * to the currently rendered content's style.
507 gtk_theming_engine_get_style (GtkThemingEngine *engine,
510 GtkThemingEnginePrivate *priv;
513 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
517 va_start (args, engine);
518 gtk_style_context_get_style_valist (priv->context, args);
523 * gtk_theming_engine_lookup_color:
524 * @engine: a #GtkThemingEngine
525 * @color_name: color name to lookup
526 * @color: (out): Return location for the looked up color
528 * Looks up and resolves a color name in the current style's color map.
530 * Returns: %TRUE if @color_name was found and resolved, %FALSE otherwise
533 gtk_theming_engine_lookup_color (GtkThemingEngine *engine,
534 const gchar *color_name,
537 GtkThemingEnginePrivate *priv;
539 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
540 g_return_val_if_fail (color_name != NULL, FALSE);
543 return gtk_style_context_lookup_color (priv->context, color_name, color);
547 * gtk_theming_engine_get_state:
548 * @engine: a #GtkThemingEngine
550 * returns the state used when rendering.
552 * Returns: the state flags
557 gtk_theming_engine_get_state (GtkThemingEngine *engine)
559 GtkThemingEnginePrivate *priv;
561 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0);
564 return gtk_style_context_get_state (priv->context);
568 * gtk_theming_engine_state_is_running:
569 * @engine: a #GtkThemingEngine
570 * @state: a widget state
571 * @progress: (out): return location for the transition progress
573 * Returns %TRUE if there is a transition animation running for the
574 * current region (see gtk_style_context_push_animatable_region()).
576 * If @progress is not %NULL, the animation progress will be returned
577 * there, 0.0 means the state is closest to being %FALSE, while 1.0 means
578 * it's closest to being %TRUE. This means transition animations will
579 * run from 0 to 1 when @state is being set to %TRUE and from 1 to 0 when
580 * it's being set to %FALSE.
582 * Returns: %TRUE if there is a running transition animation for @state.
586 * Deprecated: 3.6: Always returns %FALSE
589 gtk_theming_engine_state_is_running (GtkThemingEngine *engine,
593 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
599 * gtk_theming_engine_get_path:
600 * @engine: a #GtkThemingEngine
602 * Returns the widget path used for style matching.
604 * Returns: (transfer none): A #GtkWidgetPath
608 const GtkWidgetPath *
609 gtk_theming_engine_get_path (GtkThemingEngine *engine)
611 GtkThemingEnginePrivate *priv;
613 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
616 return gtk_style_context_get_path (priv->context);
620 * gtk_theming_engine_has_class:
621 * @engine: a #GtkThemingEngine
622 * @style_class: class name to look up
624 * Returns %TRUE if the currently rendered contents have
625 * defined the given class name.
627 * Returns: %TRUE if @engine has @class_name defined
632 gtk_theming_engine_has_class (GtkThemingEngine *engine,
633 const gchar *style_class)
635 GtkThemingEnginePrivate *priv;
637 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
640 return gtk_style_context_has_class (priv->context, style_class);
644 * gtk_theming_engine_has_region:
645 * @engine: a #GtkThemingEngine
646 * @style_region: a region name
647 * @flags: (out) (allow-none): return location for region flags
649 * Returns %TRUE if the currently rendered contents have the
650 * region defined. If @flags_return is not %NULL, it is set
651 * to the flags affecting the region.
653 * Returns: %TRUE if region is defined
658 gtk_theming_engine_has_region (GtkThemingEngine *engine,
659 const gchar *style_region,
660 GtkRegionFlags *flags)
662 GtkThemingEnginePrivate *priv;
667 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
670 return gtk_style_context_has_region (priv->context, style_region, flags);
674 * gtk_theming_engine_get_direction:
675 * @engine: a #GtkThemingEngine
677 * Returns the widget direction used for rendering.
679 * Returns: the widget direction
684 gtk_theming_engine_get_direction (GtkThemingEngine *engine)
686 GtkThemingEnginePrivate *priv;
688 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), GTK_TEXT_DIR_LTR);
691 return gtk_style_context_get_direction (priv->context);
695 * gtk_theming_engine_get_junction_sides:
696 * @engine: a #GtkThemingEngine
698 * Returns the widget direction used for rendering.
700 * Returns: the widget direction
705 gtk_theming_engine_get_junction_sides (GtkThemingEngine *engine)
707 GtkThemingEnginePrivate *priv;
709 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0);
712 return gtk_style_context_get_junction_sides (priv->context);
716 * gtk_theming_engine_get_color:
717 * @engine: a #GtkThemingEngine
718 * @state: state to retrieve the color for
719 * @color: (out): return value for the foreground color
721 * Gets the foreground color for a given state.
726 gtk_theming_engine_get_color (GtkThemingEngine *engine,
730 GtkThemingEnginePrivate *priv;
732 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
735 gtk_style_context_get_color (priv->context, state, color);
739 * gtk_theming_engine_get_background_color:
740 * @engine: a #GtkThemingEngine
741 * @state: state to retrieve the color for
742 * @color: (out): return value for the background color
744 * Gets the background color for a given state.
749 gtk_theming_engine_get_background_color (GtkThemingEngine *engine,
753 GtkThemingEnginePrivate *priv;
755 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
758 gtk_style_context_get_background_color (priv->context, state, color);
762 * gtk_theming_engine_get_border_color:
763 * @engine: a #GtkThemingEngine
764 * @state: state to retrieve the color for
765 * @color: (out): return value for the border color
767 * Gets the border color for a given state.
772 gtk_theming_engine_get_border_color (GtkThemingEngine *engine,
776 GtkThemingEnginePrivate *priv;
778 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
781 gtk_style_context_get_border_color (priv->context, state, color);
785 * gtk_theming_engine_get_border:
786 * @engine: a #GtkThemingEngine
787 * @state: state to retrieve the border for
788 * @border: (out): return value for the border settings
790 * Gets the border for a given state as a #GtkBorder.
795 gtk_theming_engine_get_border (GtkThemingEngine *engine,
799 GtkThemingEnginePrivate *priv;
801 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
804 gtk_style_context_get_border (priv->context, state, border);
808 * gtk_theming_engine_get_padding:
809 * @engine: a #GtkThemingEngine
810 * @state: state to retrieve the padding for
811 * @padding: (out): return value for the padding settings
813 * Gets the padding for a given state as a #GtkBorder.
818 gtk_theming_engine_get_padding (GtkThemingEngine *engine,
822 GtkThemingEnginePrivate *priv;
824 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
827 gtk_style_context_get_padding (priv->context, state, padding);
831 * gtk_theming_engine_get_margin:
832 * @engine: a #GtkThemingEngine
833 * @state: state to retrieve the border for
834 * @margin: (out): return value for the margin settings
836 * Gets the margin for a given state as a #GtkBorder.
841 gtk_theming_engine_get_margin (GtkThemingEngine *engine,
845 GtkThemingEnginePrivate *priv;
847 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
850 gtk_style_context_get_margin (priv->context, state, margin);
854 * gtk_theming_engine_get_font:
855 * @engine: a #GtkThemingEngine
856 * @state: state to retrieve the font for
858 * Returns the font description for a given state.
860 * Returns: (transfer none): the #PangoFontDescription for the given
861 * state. This object is owned by GTK+ and should not be
866 const PangoFontDescription *
867 gtk_theming_engine_get_font (GtkThemingEngine *engine,
870 GtkThemingEnginePrivate *priv;
872 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
875 return gtk_style_context_get_font (priv->context, state);
878 /* GtkThemingModule */
881 gtk_theming_module_load (GTypeModule *type_module)
883 GtkThemingModule *theming_module;
885 gchar *name, *module_path;
887 theming_module = GTK_THEMING_MODULE (type_module);
888 name = theming_module->name;
889 module_path = _gtk_find_module (name, "theming-engines");
894 module = g_module_open (module_path, G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL);
895 g_free (module_path);
900 if (!g_module_symbol (module, "theme_init",
901 (gpointer *) &theming_module->init) ||
902 !g_module_symbol (module, "theme_exit",
903 (gpointer *) &theming_module->exit) ||
904 !g_module_symbol (module, "create_engine",
905 (gpointer *) &theming_module->create_engine))
907 g_module_close (module);
912 theming_module->module = module;
914 theming_module->init (G_TYPE_MODULE (theming_module));
920 gtk_theming_module_unload (GTypeModule *type_module)
922 GtkThemingModule *theming_module;
924 theming_module = GTK_THEMING_MODULE (type_module);
926 theming_module->exit ();
928 g_module_close (theming_module->module);
930 theming_module->module = NULL;
931 theming_module->init = NULL;
932 theming_module->exit = NULL;
933 theming_module->create_engine = NULL;
937 gtk_theming_module_class_init (GtkThemingModuleClass *klass)
939 GTypeModuleClass *module_class = G_TYPE_MODULE_CLASS (klass);
941 module_class->load = gtk_theming_module_load;
942 module_class->unload = gtk_theming_module_unload;
946 gtk_theming_module_init (GtkThemingModule *module)
951 * gtk_theming_engine_load:
952 * @name: Theme engine name to load
954 * Loads and initializes a theming engine module from the
955 * standard directories.
957 * Returns: (transfer none): A theming engine, or %NULL if
958 * the engine @name doesn't exist.
961 gtk_theming_engine_load (const gchar *name)
963 static GHashTable *engines = NULL;
964 static GtkThemingEngine *default_engine;
965 GtkThemingEngine *engine = NULL;
970 engines = g_hash_table_new (g_str_hash, g_str_equal);
972 engine = g_hash_table_lookup (engines, name);
976 GtkThemingModule *module;
978 module = g_object_new (GTK_TYPE_THEMING_MODULE, NULL);
979 g_type_module_set_name (G_TYPE_MODULE (module), name);
980 module->name = g_strdup (name);
982 if (module && g_type_module_use (G_TYPE_MODULE (module)))
984 engine = (module->create_engine) ();
987 g_hash_table_insert (engines, module->name, engine);
993 if (G_UNLIKELY (!default_engine))
994 default_engine = g_object_new (GTK_TYPE_THEMING_ENGINE, NULL);
996 engine = default_engine;
1003 * gtk_theming_engine_get_screen:
1004 * @engine: a #GtkThemingEngine
1006 * Returns the #GdkScreen to which @engine currently rendering to.
1008 * Returns: (transfer none): a #GdkScreen, or %NULL.
1011 gtk_theming_engine_get_screen (GtkThemingEngine *engine)
1013 GtkThemingEnginePrivate *priv;
1015 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
1017 priv = engine->priv;
1018 return gtk_style_context_get_screen (priv->context);
1021 /* Paint method implementations */
1023 gtk_theming_engine_render_check (GtkThemingEngine *engine,
1030 GdkRGBA fg_color, bg_color;
1031 GtkStateFlags flags;
1032 gint exterior_size, interior_size, thickness, pad;
1033 GtkBorderStyle border_style;
1036 GtkThemingBackground bg;
1038 _gtk_theming_background_init (&bg, engine,
1041 gtk_theming_engine_get_junction_sides (engine));
1043 if (_gtk_theming_background_has_background_image (&bg))
1045 _gtk_theming_background_render (&bg, cr);
1049 flags = gtk_theming_engine_get_state (engine);
1052 gtk_theming_engine_get_color (engine, flags, &fg_color);
1053 gtk_theming_engine_get_background_color (engine, flags, &bg_color);
1054 gtk_theming_engine_get_border (engine, flags, &border);
1055 border_style = _gtk_css_border_style_value_get
1056 (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
1058 border_width = MIN (MIN (border.top, border.bottom),
1059 MIN (border.left, border.right));
1060 exterior_size = MIN (width, height);
1062 if (exterior_size % 2 == 0) /* Ensure odd */
1065 /* FIXME: thickness */
1067 pad = thickness + MAX (1, (exterior_size - 2 * thickness) / 9);
1068 interior_size = MAX (1, exterior_size - 2 * pad);
1070 if (interior_size < 7)
1073 pad = MAX (0, (exterior_size - interior_size) / 2);
1076 x -= (1 + exterior_size - (gint) width) / 2;
1077 y -= (1 + exterior_size - (gint) height) / 2;
1079 if (border_style == GTK_BORDER_STYLE_SOLID)
1081 GdkRGBA border_color;
1083 cairo_set_line_width (cr, border_width);
1084 gtk_theming_engine_get_border_color (engine, flags, &border_color);
1086 cairo_rectangle (cr, x + 0.5, y + 0.5, exterior_size - 1, exterior_size - 1);
1087 gdk_cairo_set_source_rgba (cr, &bg_color);
1088 cairo_fill_preserve (cr);
1090 gdk_cairo_set_source_rgba (cr, &border_color);
1094 gdk_cairo_set_source_rgba (cr, &fg_color);
1096 if (flags & GTK_STATE_FLAG_INCONSISTENT)
1098 int line_thickness = MAX (1, (3 + interior_size * 2) / 7);
1100 cairo_rectangle (cr,
1102 y + pad + (1 + interior_size - line_thickness) / 2,
1109 if (flags & GTK_STATE_FLAG_ACTIVE)
1111 cairo_translate (cr,
1114 cairo_scale (cr, interior_size / 7., interior_size / 7.);
1116 cairo_rectangle (cr, 0, 0, 7, 7);
1119 cairo_move_to (cr, 7.0, 0.0);
1120 cairo_line_to (cr, 7.5, 1.0);
1121 cairo_curve_to (cr, 5.3, 2.0,
1124 cairo_curve_to (cr, 3.0, 5.7,
1127 cairo_line_to (cr, 0.2, 3.5);
1128 cairo_curve_to (cr, 1.1, 3.5,
1131 cairo_curve_to (cr, 1.0, 3.9,
1134 cairo_curve_to (cr, 3.5, 3.1,
1146 gtk_theming_engine_render_option (GtkThemingEngine *engine,
1153 GtkStateFlags flags;
1154 GdkRGBA fg_color, bg_color;
1155 gint exterior_size, interior_size, pad, thickness, border_width;
1156 GtkBorderStyle border_style;
1158 GtkThemingBackground bg;
1160 _gtk_theming_background_init (&bg, engine,
1163 gtk_theming_engine_get_junction_sides (engine));
1165 if (_gtk_theming_background_has_background_image (&bg))
1167 _gtk_theming_background_render (&bg, cr);
1171 flags = gtk_theming_engine_get_state (engine);
1175 gtk_theming_engine_get_color (engine, flags, &fg_color);
1176 gtk_theming_engine_get_background_color (engine, flags, &bg_color);
1177 gtk_theming_engine_get_border (engine, flags, &border);
1178 border_style = _gtk_css_border_style_value_get
1179 (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
1181 exterior_size = MIN (width, height);
1182 border_width = MIN (MIN (border.top, border.bottom),
1183 MIN (border.left, border.right));
1185 if (exterior_size % 2 == 0) /* Ensure odd */
1188 x -= (1 + exterior_size - width) / 2;
1189 y -= (1 + exterior_size - height) / 2;
1191 if (border_style == GTK_BORDER_STYLE_SOLID)
1193 GdkRGBA border_color;
1195 cairo_set_line_width (cr, border_width);
1196 gtk_theming_engine_get_border_color (engine, flags, &border_color);
1198 cairo_new_sub_path (cr);
1200 x + exterior_size / 2.,
1201 y + exterior_size / 2.,
1202 (exterior_size - 1) / 2.,
1205 gdk_cairo_set_source_rgba (cr, &bg_color);
1206 cairo_fill_preserve (cr);
1208 gdk_cairo_set_source_rgba (cr, &border_color);
1212 gdk_cairo_set_source_rgba (cr, &fg_color);
1214 /* FIXME: thickness */
1217 if (flags & GTK_STATE_FLAG_INCONSISTENT)
1219 gint line_thickness;
1221 pad = thickness + MAX (1, (exterior_size - 2 * thickness) / 9);
1222 interior_size = MAX (1, exterior_size - 2 * pad);
1224 if (interior_size < 7)
1227 pad = MAX (0, (exterior_size - interior_size) / 2);
1230 line_thickness = MAX (1, (3 + interior_size * 2) / 7);
1232 cairo_rectangle (cr,
1234 y + pad + (interior_size - line_thickness) / 2.,
1239 if (flags & GTK_STATE_FLAG_ACTIVE)
1241 pad = thickness + MAX (1, 2 * (exterior_size - 2 * thickness) / 9);
1242 interior_size = MAX (1, exterior_size - 2 * pad);
1244 if (interior_size < 5)
1247 pad = MAX (0, (exterior_size - interior_size) / 2);
1250 cairo_new_sub_path (cr);
1252 x + pad + interior_size / 2.,
1253 y + pad + interior_size / 2.,
1263 add_path_arrow (cairo_t *cr,
1271 cairo_translate (cr, x + (size / 2), y + (size / 2));
1272 cairo_rotate (cr, angle);
1274 cairo_move_to (cr, 0, - (size / 4));
1275 cairo_line_to (cr, - (size / 2), (size / 4));
1276 cairo_line_to (cr, (size / 2), (size / 4));
1277 cairo_close_path (cr);
1283 gtk_theming_engine_render_arrow (GtkThemingEngine *engine,
1290 GtkStateFlags flags;
1295 flags = gtk_theming_engine_get_state (engine);
1296 gtk_theming_engine_get_color (engine, flags, &fg_color);
1298 if (flags & GTK_STATE_FLAG_INSENSITIVE)
1300 add_path_arrow (cr, angle, x + 1, y + 1, size);
1301 cairo_set_source_rgb (cr, 1, 1, 1);
1305 add_path_arrow (cr, angle, x, y, size);
1306 gdk_cairo_set_source_rgba (cr, &fg_color);
1313 add_path_line (cairo_t *cr,
1319 /* Adjust endpoints */
1333 cairo_move_to (cr, x1, y1);
1334 cairo_line_to (cr, x2, y2);
1338 color_shade (const GdkRGBA *color,
1340 GdkRGBA *color_return)
1342 GtkSymbolicColor *literal, *shade;
1344 literal = gtk_symbolic_color_new_literal (color);
1345 shade = gtk_symbolic_color_new_shade (literal, factor);
1346 gtk_symbolic_color_unref (literal);
1348 gtk_symbolic_color_resolve (shade, NULL, color_return);
1349 gtk_symbolic_color_unref (shade);
1353 gtk_theming_engine_render_background (GtkThemingEngine *engine,
1360 GtkThemingBackground bg;
1362 _gtk_theming_background_init (&bg, engine,
1365 gtk_theming_engine_get_junction_sides (engine));
1367 _gtk_theming_background_render (&bg, cr);
1371 gtk_theming_engine_hide_border_sides (double border[4],
1372 GtkBorderStyle border_style[4],
1377 for (i = 0; i < 4; i++)
1379 if (hidden_side & (1 << i) ||
1380 border_style[i] == GTK_BORDER_STYLE_NONE ||
1381 border_style[i] == GTK_BORDER_STYLE_HIDDEN)
1387 render_frame_fill (cairo_t *cr,
1388 GtkRoundedBox *border_box,
1389 const double border_width[4],
1393 GtkRoundedBox padding_box;
1396 padding_box = *border_box;
1397 _gtk_rounded_box_shrink (&padding_box,
1398 border_width[GTK_CSS_TOP],
1399 border_width[GTK_CSS_RIGHT],
1400 border_width[GTK_CSS_BOTTOM],
1401 border_width[GTK_CSS_LEFT]);
1403 if (hidden_side == 0 &&
1404 gdk_rgba_equal (&colors[0], &colors[1]) &&
1405 gdk_rgba_equal (&colors[0], &colors[2]) &&
1406 gdk_rgba_equal (&colors[0], &colors[3]))
1408 gdk_cairo_set_source_rgba (cr, &colors[0]);
1410 _gtk_rounded_box_path (border_box, cr);
1411 _gtk_rounded_box_path (&padding_box, cr);
1416 for (i = 0; i < 4; i++)
1418 if (hidden_side & (1 << i))
1421 for (j = 0; j < 4; j++)
1423 if (hidden_side & (1 << j))
1427 (gdk_rgba_equal (&colors[i], &colors[j])))
1429 /* We were already painted when i == j */
1434 _gtk_rounded_box_path_top (border_box, &padding_box, cr);
1436 _gtk_rounded_box_path_right (border_box, &padding_box, cr);
1438 _gtk_rounded_box_path_bottom (border_box, &padding_box, cr);
1440 _gtk_rounded_box_path_left (border_box, &padding_box, cr);
1443 /* We were already painted when i == j */
1447 gdk_cairo_set_source_rgba (cr, &colors[i]);
1455 set_stroke_style (cairo_t *cr,
1457 GtkBorderStyle style,
1463 cairo_set_line_width (cr, line_width);
1465 if (style == GTK_BORDER_STYLE_DOTTED)
1467 n = round (0.5 * length / line_width);
1470 segments[1] = n ? length / n : 2;
1471 cairo_set_dash (cr, segments, G_N_ELEMENTS (segments), 0);
1473 cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
1474 cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
1478 n = length / line_width;
1479 /* Optimize the common case of an integer-sized rectangle
1480 * Again, we care about focus rectangles.
1482 if (n == nearbyint (n))
1489 n = round ((1. / 3) * n);
1491 segments[0] = n ? (1. / 3) * length / n : 1;
1492 segments[1] = 2 * segments[1];
1494 cairo_set_dash (cr, segments, G_N_ELEMENTS (segments), 0);
1496 cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
1497 cairo_set_line_join (cr, CAIRO_LINE_JOIN_MITER);
1502 render_frame_stroke (cairo_t *cr,
1503 GtkRoundedBox *border_box,
1504 const double border_width[4],
1507 GtkBorderStyle stroke_style)
1509 gboolean different_colors, different_borders;
1510 GtkRoundedBox stroke_box;
1513 different_colors = !gdk_rgba_equal (&colors[0], &colors[1]) ||
1514 !gdk_rgba_equal (&colors[0], &colors[2]) ||
1515 !gdk_rgba_equal (&colors[0], &colors[3]);
1516 different_borders = border_width[0] != border_width[1] ||
1517 border_width[0] != border_width[2] ||
1518 border_width[0] != border_width[3] ;
1520 stroke_box = *border_box;
1521 _gtk_rounded_box_shrink (&stroke_box,
1522 border_width[GTK_CSS_TOP] / 2.0,
1523 border_width[GTK_CSS_RIGHT] / 2.0,
1524 border_width[GTK_CSS_BOTTOM] / 2.0,
1525 border_width[GTK_CSS_LEFT] / 2.0);
1527 if (!different_colors && !different_borders && hidden_side == 0)
1532 * Mostly expected to trigger for focus rectangles */
1533 for (i = 0; i < 4; i++)
1535 length += _gtk_rounded_box_guess_length (&stroke_box, i);
1536 _gtk_rounded_box_path_side (&stroke_box, cr, i);
1539 gdk_cairo_set_source_rgba (cr, &colors[0]);
1540 set_stroke_style (cr, border_width[0], stroke_style, length);
1545 GtkRoundedBox padding_box;
1547 padding_box = *border_box;
1548 _gtk_rounded_box_path (&padding_box, cr);
1549 _gtk_rounded_box_shrink (&padding_box,
1550 border_width[GTK_CSS_TOP],
1551 border_width[GTK_CSS_RIGHT],
1552 border_width[GTK_CSS_BOTTOM],
1553 border_width[GTK_CSS_LEFT]);
1555 for (i = 0; i < 4; i++)
1557 if (hidden_side & (1 << i))
1563 _gtk_rounded_box_path_top (border_box, &padding_box, cr);
1565 _gtk_rounded_box_path_right (border_box, &padding_box, cr);
1567 _gtk_rounded_box_path_bottom (border_box, &padding_box, cr);
1569 _gtk_rounded_box_path_left (border_box, &padding_box, cr);
1572 _gtk_rounded_box_path_side (&stroke_box, cr, i);
1574 gdk_cairo_set_source_rgba (cr, &colors[i]);
1575 set_stroke_style (cr,
1578 _gtk_rounded_box_guess_length (&stroke_box, i));
1587 render_border (cairo_t *cr,
1588 GtkRoundedBox *border_box,
1589 const double border_width[4],
1592 GtkBorderStyle border_style[4])
1598 cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
1600 for (i = 0; i < 4; i++)
1602 if (hidden_side & (1 << i))
1605 switch (border_style[i])
1607 case GTK_BORDER_STYLE_NONE:
1608 case GTK_BORDER_STYLE_HIDDEN:
1609 case GTK_BORDER_STYLE_SOLID:
1611 case GTK_BORDER_STYLE_INSET:
1612 if (i == 1 || i == 2)
1613 color_shade (&colors[i], 1.8, &colors[i]);
1615 case GTK_BORDER_STYLE_OUTSET:
1616 if (i == 0 || i == 3)
1617 color_shade (&colors[i], 1.8, &colors[i]);
1619 case GTK_BORDER_STYLE_DOTTED:
1620 case GTK_BORDER_STYLE_DASHED:
1622 guint dont_draw = hidden_side;
1624 for (j = 0; j < 4; j++)
1626 if (border_style[j] == border_style[i])
1627 hidden_side |= (1 << j);
1629 dont_draw |= (1 << j);
1632 render_frame_stroke (cr, border_box, border_width, colors, dont_draw, border_style[i]);
1635 case GTK_BORDER_STYLE_DOUBLE:
1637 GtkRoundedBox other_box;
1638 double other_border[4];
1639 guint dont_draw = hidden_side;
1641 for (j = 0; j < 4; j++)
1643 if (border_style[j] == GTK_BORDER_STYLE_DOUBLE)
1644 hidden_side |= (1 << j);
1646 dont_draw |= (1 << j);
1648 other_border[i] = border_width[i] / 3;
1651 render_frame_fill (cr, border_box, other_border, colors, dont_draw);
1653 other_box = *border_box;
1654 _gtk_rounded_box_shrink (&other_box,
1655 2 * other_border[GTK_CSS_TOP],
1656 2 * other_border[GTK_CSS_RIGHT],
1657 2 * other_border[GTK_CSS_BOTTOM],
1658 2 * other_border[GTK_CSS_LEFT]);
1659 render_frame_fill (cr, &other_box, other_border, colors, dont_draw);
1661 case GTK_BORDER_STYLE_GROOVE:
1662 case GTK_BORDER_STYLE_RIDGE:
1664 GtkRoundedBox other_box;
1665 GdkRGBA other_colors[4];
1666 guint dont_draw = hidden_side;
1667 double other_border[4];
1669 for (j = 0; j < 4; j++)
1671 other_colors[j] = colors[j];
1672 if ((j == 0 || j == 3) ^ (border_style[j] == GTK_BORDER_STYLE_RIDGE))
1673 color_shade (&other_colors[j], 1.8, &other_colors[j]);
1675 color_shade (&colors[j], 1.8, &colors[j]);
1676 if (border_style[j] == GTK_BORDER_STYLE_GROOVE ||
1677 border_style[j] == GTK_BORDER_STYLE_RIDGE)
1678 hidden_side |= (1 << j);
1680 dont_draw |= (1 << j);
1681 other_border[i] = border_width[i] / 2;
1684 render_frame_fill (cr, border_box, other_border, colors, dont_draw);
1686 other_box = *border_box;
1687 _gtk_rounded_box_shrink (&other_box,
1688 other_border[GTK_CSS_TOP],
1689 other_border[GTK_CSS_RIGHT],
1690 other_border[GTK_CSS_BOTTOM],
1691 other_border[GTK_CSS_LEFT]);
1692 render_frame_fill (cr, &other_box, other_border, other_colors, dont_draw);
1696 g_assert_not_reached ();
1701 render_frame_fill (cr, border_box, border_width, colors, hidden_side);
1707 render_frame_internal (GtkThemingEngine *engine,
1714 GtkJunctionSides junction)
1716 GtkBorderImage border_image;
1717 GtkBorderStyle border_style[4];
1718 GtkRoundedBox border_box;
1719 double border_width[4];
1722 border_width[0] = _gtk_css_number_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_WIDTH), 100);
1723 border_width[1] = _gtk_css_number_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH), 100);
1724 border_width[2] = _gtk_css_number_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH), 100);
1725 border_width[3] = _gtk_css_number_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH), 100);
1727 border_style[0] = _gtk_css_border_style_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
1728 border_style[1] = _gtk_css_border_style_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_RIGHT_STYLE));
1729 border_style[2] = _gtk_css_border_style_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_BOTTOM_STYLE));
1730 border_style[3] = _gtk_css_border_style_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_LEFT_STYLE));
1732 gtk_theming_engine_hide_border_sides (border_width, border_style, hidden_side);
1734 if (_gtk_border_image_init (&border_image, engine))
1735 _gtk_border_image_render (&border_image, border_width, cr, x, y, width, height);
1738 colors[0] = *_gtk_css_rgba_value_get_rgba (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_COLOR));
1739 colors[1] = *_gtk_css_rgba_value_get_rgba (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_RIGHT_COLOR));
1740 colors[2] = *_gtk_css_rgba_value_get_rgba (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_BOTTOM_COLOR));
1741 colors[3] = *_gtk_css_rgba_value_get_rgba (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_LEFT_COLOR));
1743 _gtk_rounded_box_init_rect (&border_box, x, y, width, height);
1744 _gtk_rounded_box_apply_border_radius_for_engine (&border_box, engine, junction);
1746 render_border (cr, &border_box, border_width, hidden_side, colors, border_style);
1749 border_style[0] = _gtk_css_border_style_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_OUTLINE_STYLE));
1750 if (border_style[0] != GTK_BORDER_STYLE_NONE)
1754 border_style[1] = border_style[2] = border_style[3] = border_style[0];
1755 border_width[0] = _gtk_css_number_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_OUTLINE_WIDTH), 100);
1756 border_width[3] = border_width[2] = border_width[1] = border_width[0];
1757 colors[0] = *_gtk_css_rgba_value_get_rgba (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_OUTLINE_COLOR));
1758 colors[3] = colors[2] = colors[1] = colors[0];
1759 offset = _gtk_css_number_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_OUTLINE_OFFSET), 100);
1761 /* reinit box here - outlines don't have a border radius */
1762 _gtk_rounded_box_init_rect (&border_box, x, y, width, height);
1763 _gtk_rounded_box_shrink (&border_box,
1764 - border_width[GTK_CSS_TOP] - offset,
1765 - border_width[GTK_CSS_RIGHT] - offset,
1766 - border_width[GTK_CSS_LEFT] - offset,
1767 - border_width[GTK_CSS_BOTTOM] - offset);
1769 render_border (cr, &border_box, border_width, hidden_side, colors, border_style);
1774 gtk_theming_engine_render_frame (GtkThemingEngine *engine,
1781 GtkJunctionSides junction;
1783 junction = gtk_theming_engine_get_junction_sides (engine);
1785 render_frame_internal (engine, cr,
1786 x, y, width, height,
1791 gtk_theming_engine_render_expander (GtkThemingEngine *engine,
1798 GtkStateFlags flags;
1799 GdkRGBA outline_color, fg_color;
1800 double vertical_overshoot;
1803 double interp; /* interpolation factor for center position */
1804 double x_double_horz, y_double_horz;
1805 double x_double_vert, y_double_vert;
1806 double x_double, y_double;
1813 flags = gtk_theming_engine_get_state (engine);
1815 gtk_theming_engine_get_color (engine, flags, &fg_color);
1816 gtk_theming_engine_get_border_color (engine, flags, &outline_color);
1818 is_rtl = (gtk_theming_engine_get_direction (engine) == GTK_TEXT_DIR_RTL);
1820 progress = (flags & GTK_STATE_FLAG_ACTIVE) ? 1 : 0;
1822 if (!gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_HORIZONTAL))
1825 angle = (G_PI) - ((G_PI / 2) * progress);
1827 angle = (G_PI / 2) * progress;
1832 angle = (G_PI / 2) + ((G_PI / 2) * progress);
1834 angle = (G_PI / 2) - ((G_PI / 2) * progress);
1839 /* Compute distance that the stroke extends beyonds the end
1840 * of the triangle we draw.
1842 vertical_overshoot = line_width / 2.0 * (1. / tan (G_PI / 8));
1844 /* For odd line widths, we end the vertical line of the triangle
1845 * at a half pixel, so we round differently.
1847 if (line_width % 2 == 1)
1848 vertical_overshoot = ceil (0.5 + vertical_overshoot) - 0.5;
1850 vertical_overshoot = ceil (vertical_overshoot);
1852 /* Adjust the size of the triangle we draw so that the entire stroke fits
1854 diameter = (gint) MAX (3, width - 2 * vertical_overshoot);
1856 /* If the line width is odd, we want the diameter to be even,
1857 * and vice versa, so force the sum to be odd. This relationship
1858 * makes the point of the triangle look right.
1860 diameter -= (1 - (diameter + line_width) % 2);
1862 radius = diameter / 2.;
1864 /* Adjust the center so that the stroke is properly aligned with
1865 * the pixel grid. The center adjustment is different for the
1866 * horizontal and vertical orientations. For intermediate positions
1867 * we interpolate between the two.
1869 x_double_vert = floor ((x + width / 2) - (radius + line_width) / 2.) + (radius + line_width) / 2.;
1870 y_double_vert = (y + height / 2) - 0.5;
1872 x_double_horz = (x + width / 2) - 0.5;
1873 y_double_horz = floor ((y + height / 2) - (radius + line_width) / 2.) + (radius + line_width) / 2.;
1875 x_double = x_double_vert * (1 - interp) + x_double_horz * interp;
1876 y_double = y_double_vert * (1 - interp) + y_double_horz * interp;
1878 cairo_translate (cr, x_double, y_double);
1879 cairo_rotate (cr, angle);
1881 cairo_move_to (cr, - radius / 2., - radius);
1882 cairo_line_to (cr, radius / 2., 0);
1883 cairo_line_to (cr, - radius / 2., radius);
1884 cairo_close_path (cr);
1886 cairo_set_line_width (cr, line_width);
1888 gdk_cairo_set_source_rgba (cr, &fg_color);
1890 cairo_fill_preserve (cr);
1892 gdk_cairo_set_source_rgba (cr, &outline_color);
1899 gtk_theming_engine_render_focus (GtkThemingEngine *engine,
1906 GtkStateFlags flags;
1912 flags = gtk_theming_engine_get_state (engine);
1914 gtk_theming_engine_get_color (engine, flags, &color);
1916 gtk_theming_engine_get_style (engine,
1917 "focus-line-width", &line_width,
1918 "focus-line-pattern", (gchar *) &dash_list,
1921 cairo_set_line_width (cr, (gdouble) line_width);
1925 gint n_dashes = strlen ((const gchar *) dash_list);
1926 gdouble *dashes = g_new (gdouble, n_dashes);
1927 gdouble total_length = 0;
1928 gdouble dash_offset;
1931 for (i = 0; i < n_dashes; i++)
1933 dashes[i] = dash_list[i];
1934 total_length += dash_list[i];
1937 /* The dash offset here aligns the pattern to integer pixels
1938 * by starting the dash at the right side of the left border
1939 * Negative dash offsets in cairo don't work
1940 * (https://bugs.freedesktop.org/show_bug.cgi?id=2729)
1942 dash_offset = - line_width / 2.;
1944 while (dash_offset < 0)
1945 dash_offset += total_length;
1947 cairo_set_dash (cr, dashes, n_dashes, dash_offset);
1951 cairo_rectangle (cr,
1952 x + line_width / 2.,
1953 y + line_width / 2.,
1955 height - line_width);
1957 gdk_cairo_set_source_rgba (cr, &color);
1966 gtk_theming_engine_render_line (GtkThemingEngine *engine,
1974 GtkStateFlags flags;
1976 flags = gtk_theming_engine_get_state (engine);
1979 gtk_theming_engine_get_color (engine, flags, &color);
1981 cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
1982 cairo_set_line_width (cr, 1);
1984 cairo_move_to (cr, x0 + 0.5, y0 + 0.5);
1985 cairo_line_to (cr, x1 + 0.5, y1 + 0.5);
1987 gdk_cairo_set_source_rgba (cr, &color);
1994 prepare_context_for_layout (cairo_t *cr,
1997 PangoLayout *layout)
1999 const PangoMatrix *matrix;
2001 matrix = pango_context_get_matrix (pango_layout_get_context (layout));
2003 cairo_move_to (cr, x, y);
2007 cairo_matrix_t cairo_matrix;
2009 cairo_matrix_init (&cairo_matrix,
2010 matrix->xx, matrix->yx,
2011 matrix->xy, matrix->yy,
2012 matrix->x0, matrix->y0);
2014 cairo_transform (cr, &cairo_matrix);
2019 gtk_theming_engine_render_layout (GtkThemingEngine *engine,
2023 PangoLayout *layout)
2026 GtkStateFlags flags;
2029 flags = gtk_theming_engine_get_state (engine);
2030 gtk_theming_engine_get_color (engine, flags, &fg_color);
2032 prepare_context_for_layout (cr, x, y, layout);
2034 _gtk_css_shadows_value_paint_layout (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_TEXT_SHADOW),
2037 gdk_cairo_set_source_rgba (cr, &fg_color);
2038 pango_cairo_show_layout (cr, layout);
2044 gtk_theming_engine_render_slider (GtkThemingEngine *engine,
2050 GtkOrientation orientation)
2052 gtk_theming_engine_render_background (engine, cr, x, y, width, height);
2053 gtk_theming_engine_render_frame (engine, cr, x, y, width, height);
2057 gtk_theming_engine_render_frame_gap (GtkThemingEngine *engine,
2063 GtkPositionType gap_side,
2067 GtkJunctionSides junction;
2068 GtkStateFlags state;
2070 GtkCssValue *corner[4];
2071 gdouble x0, y0, x1, y1, xc, yc, wc, hc;
2074 xc = yc = wc = hc = 0;
2075 state = gtk_theming_engine_get_state (engine);
2076 junction = gtk_theming_engine_get_junction_sides (engine);
2078 gtk_theming_engine_get_border (engine, state, &border);
2079 corner[GTK_CSS_TOP_LEFT] = _gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_LEFT_RADIUS);
2080 corner[GTK_CSS_TOP_RIGHT] = _gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_RIGHT_RADIUS);
2081 corner[GTK_CSS_BOTTOM_LEFT] = _gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_BOTTOM_LEFT_RADIUS);
2082 corner[GTK_CSS_BOTTOM_RIGHT] = _gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_BOTTOM_RIGHT_RADIUS);
2084 border_width = MIN (MIN (border.top, border.bottom),
2085 MIN (border.left, border.right));
2092 xc = x + xy0_gap + border_width;
2094 wc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2097 if (xy0_gap < _gtk_css_corner_value_get_x (corner[GTK_CSS_TOP_LEFT], width))
2098 junction |= GTK_JUNCTION_CORNER_TOPLEFT;
2100 if (xy1_gap > width - _gtk_css_corner_value_get_x (corner[GTK_CSS_TOP_RIGHT], width))
2101 junction |= GTK_JUNCTION_CORNER_TOPRIGHT;
2103 case GTK_POS_BOTTOM:
2104 xc = x + xy0_gap + border_width;
2105 yc = y + height - border_width;
2106 wc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2109 if (xy0_gap < _gtk_css_corner_value_get_x (corner[GTK_CSS_BOTTOM_LEFT], width))
2110 junction |= GTK_JUNCTION_CORNER_BOTTOMLEFT;
2112 if (xy1_gap > width - _gtk_css_corner_value_get_x (corner[GTK_CSS_BOTTOM_RIGHT], width))
2113 junction |= GTK_JUNCTION_CORNER_BOTTOMRIGHT;
2118 yc = y + xy0_gap + border_width;
2120 hc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2122 if (xy0_gap < _gtk_css_corner_value_get_y (corner[GTK_CSS_TOP_LEFT], height))
2123 junction |= GTK_JUNCTION_CORNER_TOPLEFT;
2125 if (xy1_gap > height - _gtk_css_corner_value_get_y (corner[GTK_CSS_BOTTOM_LEFT], height))
2126 junction |= GTK_JUNCTION_CORNER_BOTTOMLEFT;
2130 xc = x + width - border_width;
2131 yc = y + xy0_gap + border_width;
2133 hc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2135 if (xy0_gap < _gtk_css_corner_value_get_y (corner[GTK_CSS_TOP_RIGHT], height))
2136 junction |= GTK_JUNCTION_CORNER_TOPRIGHT;
2138 if (xy1_gap > height - _gtk_css_corner_value_get_y (corner[GTK_CSS_BOTTOM_RIGHT], height))
2139 junction |= GTK_JUNCTION_CORNER_BOTTOMRIGHT;
2144 cairo_clip_extents (cr, &x0, &y0, &x1, &y1);
2145 cairo_rectangle (cr, x0, y0, x1 - x0, yc - y0);
2146 cairo_rectangle (cr, x0, yc, xc - x0, hc);
2147 cairo_rectangle (cr, xc + wc, yc, x1 - (xc + wc), hc);
2148 cairo_rectangle (cr, x0, yc + hc, x1 - x0, y1 - (yc + hc));
2151 render_frame_internal (engine, cr,
2152 x, y, width, height,
2159 gtk_theming_engine_render_extension (GtkThemingEngine *engine,
2165 GtkPositionType gap_side)
2167 GtkThemingBackground bg;
2168 GtkJunctionSides junction = 0;
2169 guint hidden_side = 0;
2174 junction = GTK_JUNCTION_LEFT;
2175 hidden_side = (1 << GTK_CSS_LEFT);
2178 junction = GTK_JUNCTION_RIGHT;
2179 hidden_side = (1 << GTK_CSS_RIGHT);
2182 junction = GTK_JUNCTION_TOP;
2183 hidden_side = (1 << GTK_CSS_TOP);
2185 case GTK_POS_BOTTOM:
2186 junction = GTK_JUNCTION_BOTTOM;
2187 hidden_side = (1 << GTK_CSS_BOTTOM);
2191 _gtk_theming_background_init (&bg, engine,
2195 _gtk_theming_background_render (&bg, cr);
2197 render_frame_internal (engine, cr,
2198 x, y, width, height,
2199 hidden_side, junction);
2203 render_dot (cairo_t *cr,
2204 const GdkRGBA *lighter,
2205 const GdkRGBA *darker,
2210 size = CLAMP ((gint) size, 2, 3);
2214 gdk_cairo_set_source_rgba (cr, lighter);
2215 cairo_rectangle (cr, x, y, 1, 1);
2216 cairo_rectangle (cr, x + 1, y + 1, 1, 1);
2221 gdk_cairo_set_source_rgba (cr, lighter);
2222 cairo_rectangle (cr, x, y, 2, 1);
2223 cairo_rectangle (cr, x, y, 1, 2);
2226 gdk_cairo_set_source_rgba (cr, darker);
2227 cairo_rectangle (cr, x + 1, y + 1, 2, 1);
2228 cairo_rectangle (cr, x + 2, y, 1, 2);
2234 gtk_theming_engine_render_handle (GtkThemingEngine *engine,
2241 GtkStateFlags flags;
2242 GdkRGBA bg_color, lighter, darker;
2243 GtkJunctionSides sides;
2244 GtkThemingBackground bg;
2249 flags = gtk_theming_engine_get_state (engine);
2251 cairo_set_line_width (cr, 1.0);
2252 sides = gtk_theming_engine_get_junction_sides (engine);
2253 gtk_theming_engine_get_background_color (engine, flags, &bg_color);
2255 color_shade (&bg_color, 0.7, &darker);
2256 color_shade (&bg_color, 1.3, &lighter);
2258 _gtk_theming_background_init (&bg, engine, x, y, width, height, sides);
2259 has_image = _gtk_theming_background_has_background_image (&bg);
2260 _gtk_theming_background_render (&bg, cr);
2262 gtk_theming_engine_render_frame (engine, cr, x, y, width, height);
2264 if (gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_GRIP))
2266 /* reduce confusing values to a meaningful state */
2267 if ((sides & (GTK_JUNCTION_CORNER_TOPLEFT | GTK_JUNCTION_CORNER_BOTTOMRIGHT)) == (GTK_JUNCTION_CORNER_TOPLEFT | GTK_JUNCTION_CORNER_BOTTOMRIGHT))
2268 sides &= ~GTK_JUNCTION_CORNER_TOPLEFT;
2270 if ((sides & (GTK_JUNCTION_CORNER_TOPRIGHT | GTK_JUNCTION_CORNER_BOTTOMLEFT)) == (GTK_JUNCTION_CORNER_TOPRIGHT | GTK_JUNCTION_CORNER_BOTTOMLEFT))
2271 sides &= ~GTK_JUNCTION_CORNER_TOPRIGHT;
2274 sides = GTK_JUNCTION_CORNER_BOTTOMRIGHT;
2276 /* align drawing area to the connected side */
2277 if (sides == GTK_JUNCTION_LEFT)
2282 else if (sides == GTK_JUNCTION_CORNER_TOPLEFT)
2286 else if (height < width)
2289 else if (sides == GTK_JUNCTION_CORNER_BOTTOMLEFT)
2291 /* make it square, aligning to bottom left */
2294 y += (height - width);
2297 else if (height < width)
2300 else if (sides == GTK_JUNCTION_RIGHT)
2302 /* aligning to right */
2305 x += (width - height);
2309 else if (sides == GTK_JUNCTION_CORNER_TOPRIGHT)
2313 else if (height < width)
2315 x += (width - height);
2319 else if (sides == GTK_JUNCTION_CORNER_BOTTOMRIGHT)
2321 /* make it square, aligning to bottom right */
2324 y += (height - width);
2327 else if (height < width)
2329 x += (width - height);
2333 else if (sides == GTK_JUNCTION_TOP)
2338 else if (sides == GTK_JUNCTION_BOTTOM)
2340 /* align to bottom */
2343 y += (height - width);
2348 g_assert_not_reached ();
2350 if (sides == GTK_JUNCTION_LEFT ||
2351 sides == GTK_JUNCTION_RIGHT)
2357 while (xi < x + width)
2359 gdk_cairo_set_source_rgba (cr, &lighter);
2360 add_path_line (cr, x, y, x, y + height);
2364 gdk_cairo_set_source_rgba (cr, &darker);
2365 add_path_line (cr, xi, y, xi, y + height);
2370 else if (sides == GTK_JUNCTION_TOP ||
2371 sides == GTK_JUNCTION_BOTTOM)
2377 while (yi < y + height)
2379 gdk_cairo_set_source_rgba (cr, &lighter);
2380 add_path_line (cr, x, yi, x + width, yi);
2384 gdk_cairo_set_source_rgba (cr, &darker);
2385 add_path_line (cr, x, yi, x + width, yi);
2390 else if (sides == GTK_JUNCTION_CORNER_TOPLEFT)
2399 gdk_cairo_set_source_rgba (cr, &darker);
2400 add_path_line (cr, xi, y, x, yi);
2406 add_path_line (cr, xi, y, x, yi);
2412 gdk_cairo_set_source_rgba (cr, &lighter);
2413 add_path_line (cr, xi, y, x, yi);
2420 else if (sides == GTK_JUNCTION_CORNER_TOPRIGHT)
2427 while (xi < (x + width - 3))
2429 gdk_cairo_set_source_rgba (cr, &lighter);
2430 add_path_line (cr, xi, y, x + width, yi);
2436 gdk_cairo_set_source_rgba (cr, &darker);
2437 add_path_line (cr, xi, y, x + width, yi);
2443 add_path_line (cr, xi, y, x + width, yi);
2450 else if (sides == GTK_JUNCTION_CORNER_BOTTOMLEFT)
2459 gdk_cairo_set_source_rgba (cr, &darker);
2460 add_path_line (cr, x, yi, xi, y + height);
2466 add_path_line (cr, x, yi, xi, y + height);
2472 gdk_cairo_set_source_rgba (cr, &lighter);
2473 add_path_line (cr, x, yi, xi, y + height);
2480 else if (sides == GTK_JUNCTION_CORNER_BOTTOMRIGHT)
2487 while (xi < (x + width - 3))
2489 gdk_cairo_set_source_rgba (cr, &lighter);
2490 add_path_line (cr, xi, y + height, x + width, yi);
2496 gdk_cairo_set_source_rgba (cr, &darker);
2497 add_path_line (cr, xi, y + height, x + width, yi);
2503 add_path_line (cr, xi, y + height, x + width, yi);
2511 else if (gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_PANE_SEPARATOR))
2516 for (xx = x + width / 2 - 15; xx <= x + width / 2 + 15; xx += 5)
2517 render_dot (cr, &lighter, &darker, xx, y + height / 2 - 1, 3);
2519 for (yy = y + height / 2 - 15; yy <= y + height / 2 + 15; yy += 5)
2520 render_dot (cr, &lighter, &darker, x + width / 2 - 1, yy, 3);
2525 for (yy = y; yy < y + height; yy += 3)
2526 for (xx = x; xx < x + width; xx += 6)
2528 render_dot (cr, &lighter, &darker, xx, yy, 2);
2529 render_dot (cr, &lighter, &darker, xx + 3, yy + 1, 2);
2537 _gtk_theming_engine_paint_spinner (cairo_t *cr,
2540 const GdkRGBA *color)
2542 guint num_steps, step;
2549 step = (guint) (progress * num_steps);
2555 cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
2556 cairo_set_line_width (cr, 2.0);
2558 half = num_steps / 2;
2560 for (i = 0; i < num_steps; i++)
2562 gint inset = 0.7 * radius;
2564 /* transparency is a function of time and intial value */
2565 gdouble t = 1.0 - (gdouble) ((i + step) % num_steps) / num_steps;
2566 gdouble xscale = - sin (i * G_PI / half);
2567 gdouble yscale = - cos (i * G_PI / half);
2569 cairo_set_source_rgba (cr,
2576 (radius - inset) * xscale,
2577 (radius - inset) * yscale);
2589 render_spinner (GtkThemingEngine *engine,
2596 GtkStateFlags state;
2600 state = gtk_theming_engine_get_state (engine);
2601 radius = MIN (width / 2, height / 2);
2603 gtk_theming_engine_get_color (engine, state, &color);
2606 cairo_translate (cr, x + width / 2, y + height / 2);
2608 _gtk_css_shadows_value_paint_spinner (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_ICON_SHADOW),
2613 _gtk_theming_engine_paint_spinner (cr,
2622 gtk_theming_engine_render_activity (GtkThemingEngine *engine,
2629 GtkThemingBackground bg;
2631 _gtk_theming_background_init (&bg, engine, x, y, width, height, 0);
2633 if (gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_SPINNER) &&
2634 !_gtk_theming_background_has_background_image (&bg))
2636 render_spinner (engine, cr, x, y, width, height);
2640 _gtk_theming_background_render (&bg, cr);
2641 gtk_theming_engine_render_frame (engine, cr, x, y, width, height);
2646 scale_or_ref (GdkPixbuf *src,
2650 if (width == gdk_pixbuf_get_width (src) &&
2651 height == gdk_pixbuf_get_height (src))
2652 return g_object_ref (src);
2654 return gdk_pixbuf_scale_simple (src,
2656 GDK_INTERP_BILINEAR);
2660 lookup_icon_size (GtkThemingEngine *engine,
2666 GtkSettings *settings;
2668 screen = gtk_theming_engine_get_screen (engine);
2669 settings = gtk_settings_get_for_screen (screen);
2671 return gtk_icon_size_lookup_for_settings (settings, size, width, height);
2675 colorshift_source (cairo_t *cr,
2678 cairo_pattern_t *source;
2683 source = cairo_pattern_reference (cairo_get_source (cr));
2685 cairo_set_source_rgb (cr, shift, shift, shift);
2686 cairo_set_operator (cr, CAIRO_OPERATOR_COLOR_DODGE);
2688 cairo_mask (cr, source);
2690 cairo_pattern_destroy (source);
2695 gtk_theming_engine_render_icon_pixbuf (GtkThemingEngine *engine,
2696 const GtkIconSource *source,
2701 GdkPixbuf *base_pixbuf;
2702 GtkStateFlags state;
2706 cairo_surface_t *surface;
2708 base_pixbuf = gtk_icon_source_get_pixbuf (source);
2709 state = gtk_theming_engine_get_state (engine);
2711 g_return_val_if_fail (base_pixbuf != NULL, NULL);
2713 if (size != (GtkIconSize) -1 &&
2714 !lookup_icon_size (engine, size, &width, &height))
2716 g_warning (G_STRLOC ": invalid icon size '%d'", size);
2720 /* If the size was wildcarded, and we're allowed to scale, then scale; otherwise,
2723 if (size != (GtkIconSize) -1 &&
2724 gtk_icon_source_get_size_wildcarded (source))
2725 scaled = scale_or_ref (base_pixbuf, width, height);
2727 scaled = g_object_ref (base_pixbuf);
2729 /* If the state was wildcarded, then generate a state. */
2730 if (gtk_icon_source_get_state_wildcarded (source))
2732 if (state & GTK_STATE_FLAG_INSENSITIVE)
2734 surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
2735 gdk_pixbuf_get_width (scaled),
2736 gdk_pixbuf_get_height (scaled));
2737 cr = cairo_create (surface);
2738 gdk_cairo_set_source_pixbuf (cr, scaled, 0, 0);
2739 cairo_paint_with_alpha (cr, 0.5);
2743 g_object_unref (scaled);
2744 stated = gdk_pixbuf_get_from_surface (surface, 0, 0,
2745 cairo_image_surface_get_width (surface),
2746 cairo_image_surface_get_height (surface));
2747 cairo_surface_destroy (surface);
2749 else if (state & GTK_STATE_FLAG_PRELIGHT)
2751 surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
2752 gdk_pixbuf_get_width (scaled),
2753 gdk_pixbuf_get_height (scaled));
2755 cr = cairo_create (surface);
2756 gdk_cairo_set_source_pixbuf (cr, scaled, 0, 0);
2757 colorshift_source (cr, 0.10);
2761 g_object_unref (scaled);
2762 stated = gdk_pixbuf_get_from_surface (surface, 0, 0,
2763 cairo_image_surface_get_width (surface),
2764 cairo_image_surface_get_height (surface));
2765 cairo_surface_destroy (surface);
2777 gtk_theming_engine_render_icon (GtkThemingEngine *engine,
2785 gdk_cairo_set_source_pixbuf (cr, pixbuf, x, y);
2787 _gtk_css_shadows_value_paint_icon (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_ICON_SHADOW), cr);