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, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
25 #include <gtk/gtkthemingengine.h>
26 #include <gtk/gtkstylecontext.h>
27 #include <gtk/gtkintl.h>
29 #include "gtkprivate.h"
30 #include "gtk9slice.h"
34 * SECTION:gtkthemingengine
35 * @Short_description: Theming renderers
36 * @Title: GtkThemingEngine
37 * @See_also: #GtkStyleContext
39 * #GtkThemingEngine is the object used for rendering themed content
40 * in GTK+ widgets. Even though GTK+ has a default implementation,
41 * it can be overridden in CSS files by enforcing a #GtkThemingEngine
42 * object to be loaded as a module.
44 * In order to implement a theming engine, a #GtkThemingEngine subclass
45 * must be created, alongside the CSS file that will reference it, the
46 * theming engine would be created as an .so library, and installed in
47 * $(gtk-modules-dir)/theming-engines/.
49 * #GtkThemingEngine<!-- -->s have limited access to the object they are
50 * rendering, the #GtkThemingEngine API has read-only accessors to the
51 * style information contained in the rendered object's #GtkStyleContext.
54 typedef struct GtkThemingEnginePrivate GtkThemingEnginePrivate;
69 struct GtkThemingEnginePrivate
71 GtkStyleContext *context;
75 #define GTK_THEMING_ENGINE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_THEMING_ENGINE, GtkThemingEnginePrivate))
77 static void gtk_theming_engine_finalize (GObject *object);
78 static void gtk_theming_engine_impl_set_property (GObject *object,
82 static void gtk_theming_engine_impl_get_property (GObject *object,
87 static void gtk_theming_engine_render_check (GtkThemingEngine *engine,
93 static void gtk_theming_engine_render_option (GtkThemingEngine *engine,
99 static void gtk_theming_engine_render_arrow (GtkThemingEngine *engine,
105 static void gtk_theming_engine_render_background (GtkThemingEngine *engine,
111 static void gtk_theming_engine_render_frame (GtkThemingEngine *engine,
117 static void gtk_theming_engine_render_expander (GtkThemingEngine *engine,
123 static void gtk_theming_engine_render_focus (GtkThemingEngine *engine,
129 static void gtk_theming_engine_render_layout (GtkThemingEngine *engine,
133 PangoLayout *layout);
134 static void gtk_theming_engine_render_line (GtkThemingEngine *engine,
140 static void gtk_theming_engine_render_slider (GtkThemingEngine *engine,
146 GtkOrientation orientation);
147 static void gtk_theming_engine_render_frame_gap (GtkThemingEngine *engine,
153 GtkPositionType gap_side,
156 static void gtk_theming_engine_render_extension (GtkThemingEngine *engine,
162 GtkPositionType gap_side);
163 static void gtk_theming_engine_render_handle (GtkThemingEngine *engine,
169 static void gtk_theming_engine_render_activity (GtkThemingEngine *engine,
175 static GdkPixbuf * gtk_theming_engine_render_icon_pixbuf (GtkThemingEngine *engine,
176 const GtkIconSource *source,
179 G_DEFINE_TYPE (GtkThemingEngine, gtk_theming_engine, G_TYPE_OBJECT)
182 typedef struct GtkThemingModule GtkThemingModule;
183 typedef struct GtkThemingModuleClass GtkThemingModuleClass;
185 struct GtkThemingModule
187 GTypeModule parent_instance;
191 void (*init) (GTypeModule *module);
193 GtkThemingEngine * (*create_engine) (void);
196 struct GtkThemingModuleClass
198 GTypeModuleClass parent_class;
201 #define GTK_TYPE_THEMING_MODULE (gtk_theming_module_get_type ())
202 #define GTK_THEMING_MODULE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_THEMING_MODULE, GtkThemingModule))
203 #define GTK_IS_THEMING_MODULE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_THEMING_MODULE))
205 G_DEFINE_TYPE (GtkThemingModule, gtk_theming_module, G_TYPE_TYPE_MODULE);
208 gtk_theming_engine_class_init (GtkThemingEngineClass *klass)
210 GObjectClass *object_class = G_OBJECT_CLASS (klass);
212 object_class->finalize = gtk_theming_engine_finalize;
213 object_class->set_property = gtk_theming_engine_impl_set_property;
214 object_class->get_property = gtk_theming_engine_impl_get_property;
216 klass->render_check = gtk_theming_engine_render_check;
217 klass->render_option = gtk_theming_engine_render_option;
218 klass->render_arrow = gtk_theming_engine_render_arrow;
219 klass->render_background = gtk_theming_engine_render_background;
220 klass->render_frame = gtk_theming_engine_render_frame;
221 klass->render_expander = gtk_theming_engine_render_expander;
222 klass->render_focus = gtk_theming_engine_render_focus;
223 klass->render_layout = gtk_theming_engine_render_layout;
224 klass->render_line = gtk_theming_engine_render_line;
225 klass->render_slider = gtk_theming_engine_render_slider;
226 klass->render_frame_gap = gtk_theming_engine_render_frame_gap;
227 klass->render_extension = gtk_theming_engine_render_extension;
228 klass->render_handle = gtk_theming_engine_render_handle;
229 klass->render_activity = gtk_theming_engine_render_activity;
230 klass->render_icon_pixbuf = gtk_theming_engine_render_icon_pixbuf;
233 * GtkThemingEngine:name:
235 * The theming engine name, this name will be used when registering
236 * custom properties, for a theming engine named "Clearlooks" registering
237 * a "glossy" custom property, it could be referenced in the CSS file as
240 * -Clearlooks-glossy: true;
245 g_object_class_install_property (object_class,
247 g_param_spec_string ("name",
249 P_("Theming engine name"),
251 G_PARAM_CONSTRUCT_ONLY | GTK_PARAM_READWRITE));
253 g_type_class_add_private (object_class, sizeof (GtkThemingEnginePrivate));
257 gtk_theming_engine_init (GtkThemingEngine *engine)
259 engine->priv = GTK_THEMING_ENGINE_GET_PRIVATE (engine);
263 gtk_theming_engine_finalize (GObject *object)
265 GtkThemingEnginePrivate *priv;
267 priv = GTK_THEMING_ENGINE (object)->priv;
270 G_OBJECT_GET_CLASS (gtk_theming_engine_parent_class)->finalize (object);
274 gtk_theming_engine_impl_set_property (GObject *object,
279 GtkThemingEnginePrivate *priv;
281 priv = GTK_THEMING_ENGINE (object)->priv;
289 priv->name = g_value_dup_string (value);
292 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
298 gtk_theming_engine_impl_get_property (GObject *object,
303 GtkThemingEnginePrivate *priv;
305 priv = GTK_THEMING_ENGINE (object)->priv;
310 g_value_set_string (value, priv->name);
313 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
319 _gtk_theming_engine_set_context (GtkThemingEngine *engine,
320 GtkStyleContext *context)
322 GtkThemingEnginePrivate *priv;
324 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
325 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
328 priv->context = context;
332 * gtk_theming_engine_register_property: (skip)
333 * @name_space: namespace for the property name
334 * @parse_func: parsing function to use, or %NULL
335 * @pspec: the #GParamSpec for the new property
337 * Registers a property so it can be used in the CSS file format,
338 * on the CSS file the property will look like
339 * "-${@name_space}-${property_name}". being
340 * ${property_name} the given to @pspec. @name_space will usually
341 * be the theme engine name.
343 * For any type a @parse_func may be provided, being this function
344 * used for turning any property value (between ':' and ';') in
345 * CSS to the #GValue needed. For basic types there is already
346 * builtin parsing support, so %NULL may be provided for these
350 * Engines must ensure property registration happens exactly once,
351 * usually GTK+ deals with theming engines as singletons, so this
352 * should be guaranteed to happen once, but bear this in mind
353 * when creating #GtkThemeEngine<!-- -->s yourself.
357 * In order to make use of the custom registered properties in
358 * the CSS file, make sure the engine is loaded first by specifying
359 * the engine property, either in a previous rule or within the same
363 * engine: someengine;
364 * -SomeEngine-custom-property: 2;
372 gtk_theming_engine_register_property (const gchar *name_space,
373 GtkStylePropertyParser parse_func,
378 g_return_if_fail (name_space != NULL);
379 g_return_if_fail (strchr (name_space, ' ') == NULL);
380 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
382 /* FIXME: hack hack hack, replacing pspec->name to include namespace */
383 name = g_strdup_printf ("-%s-%s", name_space, pspec->name);
384 g_free (pspec->name);
387 gtk_style_properties_register_property (parse_func, pspec);
391 * gtk_theming_engine_get_property:
392 * @engine: a #GtkThemingEngine
393 * @property: the property name
394 * @state: state to retrieve the value for
395 * @value: (out) (transfer full): return location for the property value,
396 * you must free this memory using g_value_unset() once you are
399 * Gets a property value as retrieved from the style settings that apply
400 * to the currently rendered element.
405 gtk_theming_engine_get_property (GtkThemingEngine *engine,
406 const gchar *property,
410 GtkThemingEnginePrivate *priv;
412 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
413 g_return_if_fail (property != NULL);
414 g_return_if_fail (value != NULL);
417 gtk_style_context_get_property (priv->context, property, state, value);
421 * gtk_theming_engine_get_valist:
422 * @engine: a #GtkThemingEngine
423 * @state: state to retrieve values for
424 * @args: va_list of property name/return location pairs, followed by %NULL
426 * Retrieves several style property values that apply to the currently
432 gtk_theming_engine_get_valist (GtkThemingEngine *engine,
436 GtkThemingEnginePrivate *priv;
438 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
441 gtk_style_context_get_valist (priv->context, state, args);
445 * gtk_theming_engine_get:
446 * @engine: a #GtkThemingEngine
447 * @state: state to retrieve values for
448 * @...: property name /return value pairs, followed by %NULL
450 * Retrieves several style property values that apply to the currently
456 gtk_theming_engine_get (GtkThemingEngine *engine,
460 GtkThemingEnginePrivate *priv;
463 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
467 va_start (args, state);
468 gtk_style_context_get_valist (priv->context, state, args);
473 * gtk_theming_engine_get_style_property:
474 * @engine: a #GtkThemingEngine
475 * @property_name: the name of the widget style property
476 * @value: Return location for the property value, free with
477 * g_value_unset() after use.
479 * Gets the value for a widget style property.
484 gtk_theming_engine_get_style_property (GtkThemingEngine *engine,
485 const gchar *property_name,
488 GtkThemingEnginePrivate *priv;
490 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
491 g_return_if_fail (property_name != NULL);
494 gtk_style_context_get_style_property (priv->context, property_name, value);
498 * gtk_theming_engine_get_style_valist:
499 * @engine: a #GtkThemingEngine
500 * @args: va_list of property name/return location pairs, followed by %NULL
502 * Retrieves several widget style properties from @engine according to the
503 * currently rendered content's style.
508 gtk_theming_engine_get_style_valist (GtkThemingEngine *engine,
511 GtkThemingEnginePrivate *priv;
513 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
516 gtk_style_context_get_style_valist (priv->context, args);
520 * gtk_theming_engine_get_style:
521 * @engine: a #GtkThemingEngine
522 * @...: property name /return value pairs, followed by %NULL
524 * Retrieves several widget style properties from @engine according
525 * to the currently rendered content's style.
530 gtk_theming_engine_get_style (GtkThemingEngine *engine,
533 GtkThemingEnginePrivate *priv;
536 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
540 va_start (args, engine);
541 gtk_style_context_get_style_valist (priv->context, args);
546 * gtk_theming_engine_lookup_color:
547 * @engine: a #GtkThemingEngine
548 * @color_name: color name to lookup
549 * @color: (out): Return location for the looked up color
551 * Looks up and resolves a color name in the current style's color map.
553 * Returns: %TRUE if @color_name was found and resolved, %FALSE otherwise
556 gtk_theming_engine_lookup_color (GtkThemingEngine *engine,
557 const gchar *color_name,
560 GtkThemingEnginePrivate *priv;
562 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
563 g_return_val_if_fail (color_name != NULL, FALSE);
566 return gtk_style_context_lookup_color (priv->context, color_name, color);
570 * gtk_theming_engine_get_state:
571 * @engine: a #GtkThemingEngine
573 * returns the state used when rendering.
575 * Returns: the state flags
580 gtk_theming_engine_get_state (GtkThemingEngine *engine)
582 GtkThemingEnginePrivate *priv;
584 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0);
587 return gtk_style_context_get_state (priv->context);
591 * gtk_theming_engine_state_is_running:
592 * @engine: a #GtkThemingEngine
593 * @state: a widget state
594 * @progress: (out): return location for the transition progress
596 * Returns %TRUE if there is a transition animation running for the
597 * current region (see gtk_style_context_push_animatable_region()).
599 * If @progress is not %NULL, the animation progress will be returned
600 * there, 0.0 means the state is closest to being %FALSE, while 1.0 means
601 * it's closest to being %TRUE. This means transition animations will
602 * run from 0 to 1 when @state is being set to %TRUE and from 1 to 0 when
603 * it's being set to %FALSE.
605 * Returns: %TRUE if there is a running transition animation for @state.
610 gtk_theming_engine_state_is_running (GtkThemingEngine *engine,
614 GtkThemingEnginePrivate *priv;
616 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
619 return gtk_style_context_state_is_running (priv->context, state, progress);
623 * gtk_theming_engine_get_path:
624 * @engine: a #GtkThemingEngine
626 * Returns the widget path used for style matching.
628 * Returns: (transfer none): A #GtkWidgetPath
632 G_CONST_RETURN GtkWidgetPath *
633 gtk_theming_engine_get_path (GtkThemingEngine *engine)
635 GtkThemingEnginePrivate *priv;
637 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
640 return gtk_style_context_get_path (priv->context);
644 * gtk_theming_engine_has_class:
645 * @engine: a #GtkThemingEngine
646 * @style_class: class name to look up
648 * Returns %TRUE if the currently rendered contents have
649 * defined the given class name.
651 * Returns: %TRUE if @engine has @class_name defined
656 gtk_theming_engine_has_class (GtkThemingEngine *engine,
657 const gchar *style_class)
659 GtkThemingEnginePrivate *priv;
661 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
664 return gtk_style_context_has_class (priv->context, style_class);
668 * gtk_theming_engine_has_region:
669 * @engine: a #GtkThemingEngine
670 * @style_region: a region name
671 * @flags: (out) (allow-none): return location for region flags
673 * Returns %TRUE if the currently rendered contents have the
674 * region defined. If @flags_return is not %NULL, it is set
675 * to the flags affecting the region.
677 * Returns: %TRUE if region is defined
682 gtk_theming_engine_has_region (GtkThemingEngine *engine,
683 const gchar *style_region,
684 GtkRegionFlags *flags)
686 GtkThemingEnginePrivate *priv;
691 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
694 return gtk_style_context_has_region (priv->context, style_region, flags);
698 * gtk_theming_engine_get_direction:
699 * @engine: a #GtkThemingEngine
701 * Returns the widget direction used for rendering.
703 * Returns: the widget direction
708 gtk_theming_engine_get_direction (GtkThemingEngine *engine)
710 GtkThemingEnginePrivate *priv;
712 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), GTK_TEXT_DIR_LTR);
715 return gtk_style_context_get_direction (priv->context);
719 * gtk_theming_engine_get_junction_sides:
720 * @engine: a #GtkThemingEngine
722 * Returns the widget direction used for rendering.
724 * Returns: the widget direction
729 gtk_theming_engine_get_junction_sides (GtkThemingEngine *engine)
731 GtkThemingEnginePrivate *priv;
733 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0);
736 return gtk_style_context_get_junction_sides (priv->context);
740 * gtk_theming_engine_get_color:
741 * @engine: a #GtkThemingEngine
742 * @state: state to retrieve the color for
743 * @color: (out): return value for the foreground color
745 * Gets the foreground color for a given state.
750 gtk_theming_engine_get_color (GtkThemingEngine *engine,
754 GtkThemingEnginePrivate *priv;
756 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
759 gtk_style_context_get_color (priv->context, state, color);
763 * gtk_theming_engine_get_background_color:
764 * @engine: a #GtkThemingEngine
765 * @state: state to retrieve the color for
766 * @color: (out): return value for the background color
768 * Gets the background color for a given state.
773 gtk_theming_engine_get_background_color (GtkThemingEngine *engine,
777 GtkThemingEnginePrivate *priv;
779 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
782 gtk_style_context_get_background_color (priv->context, state, color);
786 * gtk_theming_engine_get_border_color:
787 * @engine: a #GtkThemingEngine
788 * @state: state to retrieve the color for
789 * @color: (out): return value for the border color
791 * Gets the border color for a given state.
796 gtk_theming_engine_get_border_color (GtkThemingEngine *engine,
800 GtkThemingEnginePrivate *priv;
802 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
805 gtk_style_context_get_border_color (priv->context, state, color);
809 * gtk_theming_engine_get_border:
810 * @engine: a #GtkthemingEngine
811 * @state: state to retrieve the border for
812 * @border: (out): return value for the border settings
814 * Gets the border for a given state as a #GtkBorder.
819 gtk_theming_engine_get_border (GtkThemingEngine *engine,
823 GtkThemingEnginePrivate *priv;
825 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
828 gtk_style_context_get_border (priv->context, state, border);
832 * gtk_theming_engine_get_padding:
833 * @engine: a #GtkthemingEngine
834 * @state: state to retrieve the padding for
835 * @padding: (out): return value for the padding settings
837 * Gets the padding for a given state as a #GtkBorder.
842 gtk_theming_engine_get_padding (GtkThemingEngine *engine,
846 GtkThemingEnginePrivate *priv;
848 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
851 gtk_style_context_get_padding (priv->context, state, padding);
855 * gtk_theming_engine_get_margin:
856 * @engine: a #GtkThemingEngine
857 * @state: state to retrieve the border for
858 * @margin: (out): return value for the margin settings
860 * Gets the margin for a given state as a #GtkBorder.
865 gtk_theming_engine_get_margin (GtkThemingEngine *engine,
869 GtkThemingEnginePrivate *priv;
871 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
874 gtk_style_context_get_margin (priv->context, state, margin);
878 * gtk_theming_engine_get_font:
879 * @engine: a #GtkThemingEngine
880 * @state: state to retrieve the font for
882 * Returns the font description for a given state.
884 * Returns: (transfer none): the #PangoFontDescription for the given
885 * state. This object is owned by GTK+ and should not be
890 const PangoFontDescription *
891 gtk_theming_engine_get_font (GtkThemingEngine *engine,
894 GtkThemingEnginePrivate *priv;
896 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
899 return gtk_style_context_get_font (priv->context, state);
902 /* GtkThemingModule */
905 gtk_theming_module_load (GTypeModule *type_module)
907 GtkThemingModule *theming_module;
909 gchar *name, *module_path;
911 theming_module = GTK_THEMING_MODULE (type_module);
912 name = theming_module->name;
913 module_path = _gtk_find_module (name, "theming-engines");
918 module = g_module_open (module_path, G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL);
919 g_free (module_path);
924 if (!g_module_symbol (module, "theme_init",
925 (gpointer *) &theming_module->init) ||
926 !g_module_symbol (module, "theme_exit",
927 (gpointer *) &theming_module->exit) ||
928 !g_module_symbol (module, "create_engine",
929 (gpointer *) &theming_module->create_engine))
931 g_module_close (module);
936 theming_module->module = module;
938 theming_module->init (G_TYPE_MODULE (theming_module));
944 gtk_theming_module_unload (GTypeModule *type_module)
946 GtkThemingModule *theming_module;
948 theming_module = GTK_THEMING_MODULE (type_module);
950 theming_module->exit ();
952 g_module_close (theming_module->module);
954 theming_module->module = NULL;
955 theming_module->init = NULL;
956 theming_module->exit = NULL;
957 theming_module->create_engine = NULL;
961 gtk_theming_module_class_init (GtkThemingModuleClass *klass)
963 GTypeModuleClass *module_class = G_TYPE_MODULE_CLASS (klass);
965 module_class->load = gtk_theming_module_load;
966 module_class->unload = gtk_theming_module_unload;
970 gtk_theming_module_init (GtkThemingModule *module)
975 * gtk_theming_engine_load:
976 * @name: Theme engine name to load
978 * Loads and initializes a theming engine module from the
979 * standard directories.
981 * Returns: (transfer none): A theming engine, or %NULL if
982 * the engine @name doesn't exist.
985 gtk_theming_engine_load (const gchar *name)
987 static GHashTable *engines = NULL;
988 static GtkThemingEngine *default_engine;
989 GtkThemingEngine *engine = NULL;
994 engines = g_hash_table_new (g_str_hash, g_str_equal);
996 engine = g_hash_table_lookup (engines, name);
1000 GtkThemingModule *module;
1002 module = g_object_new (GTK_TYPE_THEMING_MODULE, NULL);
1003 g_type_module_set_name (G_TYPE_MODULE (module), name);
1004 module->name = g_strdup (name);
1006 if (module && g_type_module_use (G_TYPE_MODULE (module)))
1008 engine = (module->create_engine) ();
1011 g_hash_table_insert (engines, module->name, engine);
1018 if (G_UNLIKELY (!default_engine))
1019 default_engine = g_object_new (GTK_TYPE_THEMING_ENGINE, NULL);
1021 engine = default_engine;
1028 * gtk_theming_engine_get_screen:
1029 * @engine: a #GtkThemingEngine
1031 * Returns the #GdkScreen to which @engine currently rendering to.
1033 * Returns: (transfer none): a #GdkScreen, or %NULL.
1036 gtk_theming_engine_get_screen (GtkThemingEngine *engine)
1038 GtkThemingEnginePrivate *priv;
1040 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
1042 priv = engine->priv;
1043 return gtk_style_context_get_screen (priv->context);
1046 /* Paint method implementations */
1048 gtk_theming_engine_render_check (GtkThemingEngine *engine,
1055 GdkRGBA *fg_color, *bg_color, *border_color;
1056 GtkStateFlags flags;
1057 gint exterior_size, interior_size, thickness, pad;
1058 GtkBorderStyle border_style;
1062 flags = gtk_theming_engine_get_state (engine);
1065 gtk_theming_engine_get (engine, flags,
1067 "background-color", &bg_color,
1068 "border-color", &border_color,
1069 "border-style", &border_style,
1070 "border-width", &border,
1073 border_width = MIN (MIN (border->top, border->bottom),
1074 MIN (border->left, border->right));
1075 exterior_size = MIN (width, height);
1077 if (exterior_size % 2 == 0) /* Ensure odd */
1080 /* FIXME: thickness */
1082 pad = thickness + MAX (1, (exterior_size - 2 * thickness) / 9);
1083 interior_size = MAX (1, exterior_size - 2 * pad);
1085 if (interior_size < 7)
1088 pad = MAX (0, (exterior_size - interior_size) / 2);
1091 x -= (1 + exterior_size - (gint) width) / 2;
1092 y -= (1 + exterior_size - (gint) height) / 2;
1094 if (border_style == GTK_BORDER_STYLE_SOLID)
1096 cairo_set_line_width (cr, border_width);
1098 cairo_rectangle (cr, x + 0.5, y + 0.5, exterior_size - 1, exterior_size - 1);
1099 gdk_cairo_set_source_rgba (cr, bg_color);
1100 cairo_fill_preserve (cr);
1103 gdk_cairo_set_source_rgba (cr, border_color);
1105 gdk_cairo_set_source_rgba (cr, fg_color);
1110 gdk_cairo_set_source_rgba (cr, fg_color);
1112 if (flags & GTK_STATE_FLAG_INCONSISTENT)
1114 int line_thickness = MAX (1, (3 + interior_size * 2) / 7);
1116 cairo_rectangle (cr,
1118 y + pad + (1 + interior_size - line_thickness) / 2,
1128 running = gtk_theming_engine_state_is_running (engine, GTK_STATE_ACTIVE, &progress);
1130 if ((flags & GTK_STATE_FLAG_ACTIVE) || running)
1135 cairo_translate (cr,
1138 cairo_scale (cr, interior_size / 7., interior_size / 7.);
1140 cairo_rectangle (cr, 0, 0, 7 * progress, 7);
1143 cairo_move_to (cr, 7.0, 0.0);
1144 cairo_line_to (cr, 7.5, 1.0);
1145 cairo_curve_to (cr, 5.3, 2.0,
1148 cairo_curve_to (cr, 3.0, 5.7,
1151 cairo_line_to (cr, 0.2, 3.5);
1152 cairo_curve_to (cr, 1.1, 3.5,
1155 cairo_curve_to (cr, 1.0, 3.9,
1158 cairo_curve_to (cr, 3.5, 3.1,
1168 gdk_rgba_free (fg_color);
1169 gdk_rgba_free (bg_color);
1170 gdk_rgba_free (border_color);
1171 gtk_border_free (border);
1175 gtk_theming_engine_render_option (GtkThemingEngine *engine,
1182 GtkStateFlags flags;
1183 GdkRGBA *fg_color, *bg_color, *border_color;
1184 gint exterior_size, interior_size, pad, thickness, border_width;
1185 GtkBorderStyle border_style;
1188 flags = gtk_theming_engine_get_state (engine);
1192 gtk_theming_engine_get (engine, flags,
1194 "background-color", &bg_color,
1195 "border-color", &border_color,
1196 "border-style", &border_style,
1197 "border-width", &border,
1200 exterior_size = MIN (width, height);
1201 border_width = MIN (MIN (border->top, border->bottom),
1202 MIN (border->left, border->right));
1204 if (exterior_size % 2 == 0) /* Ensure odd */
1207 x -= (1 + exterior_size - width) / 2;
1208 y -= (1 + exterior_size - height) / 2;
1210 if (border_style == GTK_BORDER_STYLE_SOLID)
1212 cairo_set_line_width (cr, border_width);
1214 cairo_new_sub_path (cr);
1216 x + exterior_size / 2.,
1217 y + exterior_size / 2.,
1218 (exterior_size - 1) / 2.,
1221 gdk_cairo_set_source_rgba (cr, bg_color);
1222 cairo_fill_preserve (cr);
1225 gdk_cairo_set_source_rgba (cr, border_color);
1227 gdk_cairo_set_source_rgba (cr, fg_color);
1232 gdk_cairo_set_source_rgba (cr, fg_color);
1234 /* FIXME: thickness */
1237 if (flags & GTK_STATE_FLAG_INCONSISTENT)
1239 gint line_thickness;
1241 pad = thickness + MAX (1, (exterior_size - 2 * thickness) / 9);
1242 interior_size = MAX (1, exterior_size - 2 * pad);
1244 if (interior_size < 7)
1247 pad = MAX (0, (exterior_size - interior_size) / 2);
1250 line_thickness = MAX (1, (3 + interior_size * 2) / 7);
1252 cairo_rectangle (cr,
1254 y + pad + (interior_size - line_thickness) / 2.,
1259 if (flags & GTK_STATE_FLAG_ACTIVE)
1261 pad = thickness + MAX (1, 2 * (exterior_size - 2 * thickness) / 9);
1262 interior_size = MAX (1, exterior_size - 2 * pad);
1264 if (interior_size < 5)
1267 pad = MAX (0, (exterior_size - interior_size) / 2);
1270 cairo_new_sub_path (cr);
1272 x + pad + interior_size / 2.,
1273 y + pad + interior_size / 2.,
1281 gdk_rgba_free (fg_color);
1282 gdk_rgba_free (bg_color);
1283 gdk_rgba_free (border_color);
1284 gtk_border_free (border);
1288 add_path_arrow (cairo_t *cr,
1296 cairo_translate (cr, x + (size / 2), y + (size / 2));
1297 cairo_rotate (cr, angle);
1299 cairo_move_to (cr, 0, - (size / 4));
1300 cairo_line_to (cr, - (size / 2), (size / 4));
1301 cairo_line_to (cr, (size / 2), (size / 4));
1302 cairo_close_path (cr);
1308 gtk_theming_engine_render_arrow (GtkThemingEngine *engine,
1315 GtkStateFlags flags;
1320 flags = gtk_theming_engine_get_state (engine);
1322 gtk_theming_engine_get (engine, flags,
1326 if (flags & GTK_STATE_FLAG_INSENSITIVE)
1328 add_path_arrow (cr, angle, x + 1, y + 1, size);
1329 cairo_set_source_rgb (cr, 1, 1, 1);
1333 add_path_arrow (cr, angle, x, y, size);
1334 gdk_cairo_set_source_rgba (cr, fg_color);
1339 gdk_rgba_free (fg_color);
1343 add_path_line (cairo_t *cr,
1349 /* Adjust endpoints */
1363 cairo_move_to (cr, x1, y1);
1364 cairo_line_to (cr, x2, y2);
1368 color_shade (const GdkRGBA *color,
1370 GdkRGBA *color_return)
1372 GtkSymbolicColor *literal, *shade;
1374 literal = gtk_symbolic_color_new_literal (color);
1375 shade = gtk_symbolic_color_new_shade (literal, factor);
1376 gtk_symbolic_color_unref (literal);
1378 gtk_symbolic_color_resolve (shade, NULL, color_return);
1379 gtk_symbolic_color_unref (shade);
1383 _cairo_round_rectangle_sides (cairo_t *cr,
1390 GtkJunctionSides junction)
1392 radius = CLAMP (radius, 0, MIN (width / 2, height / 2));
1394 if (sides & SIDE_RIGHT)
1397 (junction & GTK_JUNCTION_CORNER_TOPRIGHT))
1398 cairo_move_to (cr, x + width, y);
1401 cairo_new_sub_path (cr);
1402 cairo_arc (cr, x + width - radius, y + radius, radius, - G_PI / 4, 0);
1406 (junction & GTK_JUNCTION_CORNER_BOTTOMRIGHT))
1407 cairo_line_to (cr, x + width, y + height);
1409 cairo_arc (cr, x + width - radius, y + height - radius, radius, 0, G_PI / 4);
1412 if (sides & SIDE_BOTTOM)
1415 ! (junction & GTK_JUNCTION_CORNER_BOTTOMRIGHT))
1417 if ((sides & SIDE_RIGHT) == 0)
1418 cairo_new_sub_path (cr);
1420 cairo_arc (cr, x + width - radius, y + height - radius, radius, G_PI / 4, G_PI / 2);
1422 else if ((sides & SIDE_RIGHT) == 0)
1423 cairo_move_to (cr, x + width, y + height);
1426 (junction & GTK_JUNCTION_CORNER_BOTTOMLEFT))
1427 cairo_line_to (cr, x, y + height);
1429 cairo_arc (cr, x + radius, y + height - radius, radius, G_PI / 2, 3 * (G_PI / 4));
1432 cairo_move_to (cr, x, y + height);
1434 if (sides & SIDE_LEFT)
1437 ! (junction & GTK_JUNCTION_CORNER_BOTTOMLEFT))
1439 if ((sides & SIDE_BOTTOM) == 0)
1440 cairo_new_sub_path (cr);
1442 cairo_arc (cr, x + radius, y + height - radius, radius, 3 * (G_PI / 4), G_PI);
1444 else if ((sides & SIDE_BOTTOM) == 0)
1445 cairo_move_to (cr, x, y + height);
1448 (junction & GTK_JUNCTION_CORNER_TOPLEFT))
1449 cairo_line_to (cr, x, y);
1451 cairo_arc (cr, x + radius, y + radius, radius, G_PI, G_PI + G_PI / 4);
1454 if (sides & SIDE_TOP)
1457 ! (junction & GTK_JUNCTION_CORNER_TOPLEFT))
1459 if ((sides & SIDE_LEFT) == 0)
1460 cairo_new_sub_path (cr);
1462 cairo_arc (cr, x + radius, y + radius, radius, 5 * (G_PI / 4), 3 * (G_PI / 2));
1464 else if ((sides & SIDE_LEFT) == 0)
1465 cairo_move_to (cr, x, y);
1468 (junction & GTK_JUNCTION_CORNER_TOPRIGHT))
1469 cairo_line_to (cr, x + width, y);
1471 cairo_arc (cr, x + width - radius, y + radius, radius, 3 * (G_PI / 2), - G_PI / 4);
1475 /* Set the appropriate matrix for
1476 * patterns coming from the style context
1479 style_pattern_set_matrix (cairo_pattern_t *pattern,
1483 cairo_matrix_t matrix;
1486 if (cairo_pattern_get_type (pattern) == CAIRO_PATTERN_TYPE_SURFACE)
1488 cairo_surface_t *surface;
1490 cairo_pattern_get_surface (pattern, &surface);
1491 w = cairo_image_surface_get_width (surface);
1492 h = cairo_image_surface_get_height (surface);
1497 cairo_matrix_init_scale (&matrix, (gdouble) w / width, (gdouble) h / height);
1498 cairo_pattern_set_matrix (pattern, &matrix);
1502 render_background_internal (GtkThemingEngine *engine,
1508 GtkJunctionSides junction)
1511 cairo_pattern_t *pattern;
1512 GtkStateFlags flags;
1514 gdouble progress, alpha = 1;
1516 gint radius, border_width;
1517 GtkBorderStyle border_style;
1518 gdouble mat_w, mat_h;
1519 cairo_matrix_t identity;
1521 /* Use unmodified size for pattern scaling */
1525 flags = gtk_theming_engine_get_state (engine);
1527 cairo_matrix_init_identity (&identity);
1529 gtk_theming_engine_get (engine, flags,
1530 "background-image", &pattern,
1531 "background-color", &bg_color,
1532 "border-radius", &radius,
1533 "border-width", &border,
1534 "border-style", &border_style,
1537 border_width = MIN (MIN (border->top, border->bottom),
1538 MIN (border->left, border->right));
1540 if (border_width > 1 &&
1541 border_style == GTK_BORDER_STYLE_NONE)
1543 cairo_set_line_width (cr, border_width);
1545 x += (gdouble) border_width / 2;
1546 y += (gdouble) border_width / 2;
1547 width -= border_width;
1548 height -= border_width;
1554 width -= border->left + border->right;
1555 height -= border->top + border->bottom;
1558 if (width <= 0 || height <= 0)
1562 cairo_translate (cr, x, y);
1564 running = gtk_theming_engine_state_is_running (engine, GTK_STATE_PRELIGHT, &progress);
1566 if (gtk_theming_engine_has_class (engine, "background"))
1568 cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.0); /* transparent */
1569 cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
1575 cairo_pattern_t *other_pattern;
1576 GtkStateFlags other_flags;
1578 cairo_pattern_t *new_pattern = NULL;
1580 if (flags & GTK_STATE_FLAG_PRELIGHT)
1582 other_flags = flags & ~(GTK_STATE_FLAG_PRELIGHT);
1583 progress = 1 - progress;
1586 other_flags = flags | GTK_STATE_FLAG_PRELIGHT;
1588 gtk_theming_engine_get (engine, other_flags,
1589 "background-image", &other_pattern,
1590 "background-color", &other_bg,
1593 if (pattern && other_pattern)
1595 cairo_pattern_type_t type, other_type;
1598 cairo_pattern_get_color_stop_count (pattern, &n0);
1599 cairo_pattern_get_color_stop_count (other_pattern, &n1);
1600 type = cairo_pattern_get_type (pattern);
1601 other_type = cairo_pattern_get_type (other_pattern);
1603 if (type == other_type && n0 == n1)
1605 gdouble offset0, red0, green0, blue0, alpha0;
1606 gdouble offset1, red1, green1, blue1, alpha1;
1607 gdouble x00, x01, y00, y01, x10, x11, y10, y11;
1608 gdouble r00, r01, r10, r11;
1611 if (type == CAIRO_PATTERN_TYPE_LINEAR)
1613 cairo_pattern_get_linear_points (pattern, &x00, &y00, &x01, &y01);
1614 cairo_pattern_get_linear_points (other_pattern, &x10, &y10, &x11, &y11);
1616 new_pattern = cairo_pattern_create_linear (x00 + (x10 - x00) * progress,
1617 y00 + (y10 - y00) * progress,
1618 x01 + (x11 - x01) * progress,
1619 y01 + (y11 - y01) * progress);
1623 cairo_pattern_get_radial_circles (pattern, &x00, &y00, &r00, &x01, &y01, &r01);
1624 cairo_pattern_get_radial_circles (other_pattern, &x10, &y10, &r10, &x11, &y11, &r11);
1626 new_pattern = cairo_pattern_create_radial (x00 + (x10 - x00) * progress,
1627 y00 + (y10 - y00) * progress,
1628 r00 + (r10 - r00) * progress,
1629 x01 + (x11 - x01) * progress,
1630 y01 + (y11 - y01) * progress,
1631 r01 + (r11 - r01) * progress);
1634 cairo_pattern_set_filter (new_pattern, CAIRO_FILTER_FAST);
1637 /* Blend both gradients into one */
1638 while (i < n0 && i < n1)
1640 cairo_pattern_get_color_stop_rgba (pattern, i,
1642 &red0, &green0, &blue0,
1644 cairo_pattern_get_color_stop_rgba (other_pattern, i,
1646 &red1, &green1, &blue1,
1649 cairo_pattern_add_color_stop_rgba (new_pattern,
1650 offset0 + ((offset1 - offset0) * progress),
1651 red0 + ((red1 - red0) * progress),
1652 green0 + ((green1 - green0) * progress),
1653 blue0 + ((blue1 - blue0) * progress),
1654 alpha0 + ((alpha1 - alpha0) * progress));
1660 /* Different pattern types, or different color
1661 * stop counts, alpha blend both patterns.
1663 _cairo_round_rectangle_sides (cr, (gdouble) radius,
1664 0, 0, width, height,
1665 SIDE_ALL, junction);
1667 style_pattern_set_matrix (other_pattern, mat_w, mat_h);
1668 cairo_set_source (cr, other_pattern);
1669 cairo_fill_preserve (cr);
1671 cairo_pattern_set_matrix (other_pattern, &identity);
1673 /* Set alpha for posterior drawing
1674 * of the target pattern
1676 alpha = 1 - progress;
1679 else if (pattern || other_pattern)
1683 gdouble x0, y0, x1, y1, r0, r1;
1686 /* Blend a pattern with a color */
1691 progress = 1 - progress;
1699 if (cairo_pattern_get_type (p) == CAIRO_PATTERN_TYPE_LINEAR)
1701 cairo_pattern_get_linear_points (p, &x0, &y0, &x1, &y1);
1702 new_pattern = cairo_pattern_create_linear (x0, y0, x1, y1);
1706 cairo_pattern_get_radial_circles (p, &x0, &y0, &r0, &x1, &y1, &r1);
1707 new_pattern = cairo_pattern_create_radial (x0, y0, r0, x1, y1, r1);
1710 cairo_pattern_get_color_stop_count (p, &n);
1712 for (i = 0; i < n; i++)
1714 gdouble red1, green1, blue1, alpha1;
1717 cairo_pattern_get_color_stop_rgba (p, i,
1719 &red1, &green1, &blue1,
1721 cairo_pattern_add_color_stop_rgba (new_pattern, offset,
1722 c->red + ((red1 - c->red) * progress),
1723 c->green + ((green1 - c->green) * progress),
1724 c->blue + ((blue1 - c->blue) * progress),
1725 c->alpha + ((alpha1 - c->alpha) * progress));
1730 const GdkRGBA *color, *other_color;
1732 /* Merge just colors */
1734 other_color = other_bg;
1736 new_pattern = cairo_pattern_create_rgba (CLAMP (color->red + ((other_color->red - color->red) * progress), 0, 1),
1737 CLAMP (color->green + ((other_color->green - color->green) * progress), 0, 1),
1738 CLAMP (color->blue + ((other_color->blue - color->blue) * progress), 0, 1),
1739 CLAMP (color->alpha + ((other_color->alpha - color->alpha) * progress), 0, 1));
1744 /* Replace pattern to use */
1745 cairo_pattern_destroy (pattern);
1746 pattern = new_pattern;
1750 cairo_pattern_destroy (other_pattern);
1753 gdk_rgba_free (other_bg);
1756 _cairo_round_rectangle_sides (cr, (gdouble) radius,
1757 0, 0, width, height,
1758 SIDE_ALL, junction);
1761 style_pattern_set_matrix (pattern, mat_w, mat_h);
1762 cairo_set_source (cr, pattern);
1765 gdk_cairo_set_source_rgba (cr, bg_color);
1769 if (border_width > 1 &&
1770 border_style != GTK_BORDER_STYLE_NONE)
1772 /* stroke with the same source, so the background
1773 * has exactly the shape than the frame, this
1774 * is important so gtk_render_background() and
1775 * gtk_render_frame() fit perfectly with round
1778 cairo_fill_preserve (cr);
1787 _cairo_round_rectangle_sides (cr, (gdouble) radius,
1788 0, 0, width, height,
1789 SIDE_ALL, junction);
1792 cairo_paint_with_alpha (cr, alpha);
1799 cairo_pattern_set_matrix (pattern, &identity);
1800 cairo_pattern_destroy (pattern);
1805 gdk_rgba_free (bg_color);
1806 gtk_border_free (border);
1810 gtk_theming_engine_render_background (GtkThemingEngine *engine,
1817 GtkJunctionSides junction;
1819 junction = gtk_theming_engine_get_junction_sides (engine);
1821 render_background_internal (engine, cr,
1822 x, y, width, height,
1826 /* Renders the small triangle on corners so
1827 * frames with 0 radius have a 3D-like effect
1830 _cairo_corner_triangle (cairo_t *cr,
1837 cairo_move_to (cr, x + 0.5, y + size - 0.5);
1838 cairo_line_to (cr, x + size - 0.5, y + size - 0.5);
1839 cairo_line_to (cr, x + size - 0.5, y + 0.5);
1841 for (i = 1; i < size - 1; i++)
1843 cairo_move_to (cr, x + size - 0.5, y + i + 0.5);
1844 cairo_line_to (cr, x + (size - i) - 0.5, y + i + 0.5);
1849 render_frame_internal (GtkThemingEngine *engine,
1856 GtkJunctionSides junction)
1858 GtkStateFlags state;
1860 GdkRGBA *border_color;
1861 GtkBorderStyle border_style;
1862 gint border_width, radius;
1863 gdouble progress, d1, d2, m;
1867 state = gtk_theming_engine_get_state (engine);
1868 gtk_theming_engine_get (engine, state,
1869 "border-color", &border_color,
1870 "border-style", &border_style,
1871 "border-width", &border,
1872 "border-radius", &radius,
1875 running = gtk_theming_engine_state_is_running (engine, GTK_STATE_PRELIGHT, &progress);
1876 border_width = MIN (MIN (border->top, border->bottom),
1877 MIN (border->left, border->right));
1881 GtkStateFlags other_state;
1882 GdkRGBA *other_color;
1884 if (state & GTK_STATE_FLAG_PRELIGHT)
1886 other_state = state & ~(GTK_STATE_FLAG_PRELIGHT);
1887 progress = 1 - progress;
1890 other_state = state | GTK_STATE_FLAG_PRELIGHT;
1892 gtk_theming_engine_get (engine, other_state,
1893 "border-color", &other_color,
1896 border_color->red = CLAMP (border_color->red + ((other_color->red - border_color->red) * progress), 0, 1);
1897 border_color->green = CLAMP (border_color->green + ((other_color->green - border_color->green) * progress), 0, 1);
1898 border_color->blue = CLAMP (border_color->blue + ((other_color->blue - border_color->blue) * progress), 0, 1);
1899 border_color->alpha = CLAMP (border_color->alpha + ((other_color->alpha - border_color->alpha) * progress), 0, 1);
1901 gdk_rgba_free (other_color);
1906 color_shade (border_color, 1.8, &lighter);
1908 switch (border_style)
1910 case GTK_BORDER_STYLE_NONE:
1912 case GTK_BORDER_STYLE_SOLID:
1913 cairo_set_line_width (cr, border_width);
1914 cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
1916 if (border_width > 1)
1918 x += (gdouble) border_width / 2;
1919 y += (gdouble) border_width / 2;
1920 width -= border_width;
1921 height -= border_width;
1923 else if (border_width == 1)
1931 _cairo_round_rectangle_sides (cr, (gdouble) radius,
1932 x, y, width, height,
1933 SIDE_ALL & ~(hidden_side),
1935 gdk_cairo_set_source_rgba (cr, border_color);
1939 case GTK_BORDER_STYLE_INSET:
1940 case GTK_BORDER_STYLE_OUTSET:
1941 cairo_set_line_width (cr, border_width);
1944 cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
1946 cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
1948 if (border_width > 1)
1950 d1 = (gdouble) border_width / 2;
1961 m = MIN (width, height);
1964 if (border_style == GTK_BORDER_STYLE_INSET)
1965 gdk_cairo_set_source_rgba (cr, &lighter);
1967 gdk_cairo_set_source_rgba (cr, border_color);
1969 _cairo_round_rectangle_sides (cr, (gdouble) radius,
1971 width - d2, height - d2,
1972 (SIDE_BOTTOM | SIDE_RIGHT) & ~(hidden_side),
1976 if (border_style == GTK_BORDER_STYLE_INSET)
1977 gdk_cairo_set_source_rgba (cr, border_color);
1979 gdk_cairo_set_source_rgba (cr, &lighter);
1981 _cairo_round_rectangle_sides (cr, (gdouble) radius,
1983 width - d2, height - d2,
1984 (SIDE_TOP | SIDE_LEFT) & ~(hidden_side),
1988 if (border_width > 1)
1990 /* overprint top/right and bottom/left corner
1991 * triangles if there are square corners there,
1992 * to give the box a 3D-like appearance.
1996 if (border_style == GTK_BORDER_STYLE_INSET)
1997 gdk_cairo_set_source_rgba (cr, &lighter);
1999 gdk_cairo_set_source_rgba (cr, border_color);
2001 cairo_set_line_width (cr, 1);
2004 (junction & GTK_JUNCTION_CORNER_TOPRIGHT) != 0)
2005 _cairo_corner_triangle (cr,
2006 x + width - border_width, y,
2010 (junction & GTK_JUNCTION_CORNER_BOTTOMLEFT) != 0)
2011 _cairo_corner_triangle (cr,
2012 x, y + height - border_width,
2025 gdk_rgba_free (border_color);
2027 gtk_border_free (border);
2031 gtk_theming_engine_render_frame (GtkThemingEngine *engine,
2038 GtkStateFlags flags;
2040 GtkBorderStyle border_style;
2041 GtkJunctionSides junction;
2043 flags = gtk_theming_engine_get_state (engine);
2044 junction = gtk_theming_engine_get_junction_sides (engine);
2046 gtk_theming_engine_get (engine, flags,
2047 "border-image", &slice,
2048 "border-style", &border_style,
2053 _gtk_9slice_render (slice, cr, x, y, width, height);
2054 _gtk_9slice_unref (slice);
2056 else if (border_style != GTK_BORDER_STYLE_NONE)
2057 render_frame_internal (engine, cr,
2058 x, y, width, height,
2063 gtk_theming_engine_render_expander (GtkThemingEngine *engine,
2070 GtkStateFlags flags;
2071 GdkRGBA *outline_color, *fg_color;
2072 double vertical_overshoot;
2075 double interp; /* interpolation factor for center position */
2076 double x_double_horz, y_double_horz;
2077 double x_double_vert, y_double_vert;
2078 double x_double, y_double;
2081 gboolean running, is_rtl;
2085 flags = gtk_theming_engine_get_state (engine);
2087 gtk_theming_engine_get (engine, flags,
2090 gtk_theming_engine_get (engine, flags,
2091 "border-color", &outline_color,
2094 running = gtk_theming_engine_state_is_running (engine, GTK_STATE_ACTIVE, &progress);
2095 is_rtl = (gtk_theming_engine_get_direction (engine) == GTK_TEXT_DIR_RTL);
2099 progress = (flags & GTK_STATE_FLAG_ACTIVE) ? 1 : 0;
2101 if (!gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_HORIZONTAL))
2104 angle = (G_PI) - ((G_PI / 2) * progress);
2106 angle = (G_PI / 2) * progress;
2111 angle = (G_PI / 2) + ((G_PI / 2) * progress);
2113 angle = (G_PI / 2) - ((G_PI / 2) * progress);
2118 /* Compute distance that the stroke extends beyonds the end
2119 * of the triangle we draw.
2121 vertical_overshoot = line_width / 2.0 * (1. / tan (G_PI / 8));
2123 /* For odd line widths, we end the vertical line of the triangle
2124 * at a half pixel, so we round differently.
2126 if (line_width % 2 == 1)
2127 vertical_overshoot = ceil (0.5 + vertical_overshoot) - 0.5;
2129 vertical_overshoot = ceil (vertical_overshoot);
2131 /* Adjust the size of the triangle we draw so that the entire stroke fits
2133 diameter = (gint) MAX (3, width - 2 * vertical_overshoot);
2135 /* If the line width is odd, we want the diameter to be even,
2136 * and vice versa, so force the sum to be odd. This relationship
2137 * makes the point of the triangle look right.
2139 diameter -= (1 - (diameter + line_width) % 2);
2141 radius = diameter / 2.;
2143 /* Adjust the center so that the stroke is properly aligned with
2144 * the pixel grid. The center adjustment is different for the
2145 * horizontal and vertical orientations. For intermediate positions
2146 * we interpolate between the two.
2148 x_double_vert = floor ((x + width / 2) - (radius + line_width) / 2.) + (radius + line_width) / 2.;
2149 y_double_vert = (y + height / 2) - 0.5;
2151 x_double_horz = (x + width / 2) - 0.5;
2152 y_double_horz = floor ((y + height / 2) - (radius + line_width) / 2.) + (radius + line_width) / 2.;
2154 x_double = x_double_vert * (1 - interp) + x_double_horz * interp;
2155 y_double = y_double_vert * (1 - interp) + y_double_horz * interp;
2157 cairo_translate (cr, x_double, y_double);
2158 cairo_rotate (cr, angle);
2160 cairo_move_to (cr, - radius / 2., - radius);
2161 cairo_line_to (cr, radius / 2., 0);
2162 cairo_line_to (cr, - radius / 2., radius);
2163 cairo_close_path (cr);
2165 cairo_set_line_width (cr, line_width);
2167 gdk_cairo_set_source_rgba (cr, fg_color);
2169 cairo_fill_preserve (cr);
2171 gdk_cairo_set_source_rgba (cr, outline_color);
2176 gdk_rgba_free (fg_color);
2177 gdk_rgba_free (outline_color);
2181 gtk_theming_engine_render_focus (GtkThemingEngine *engine,
2188 GtkStateFlags flags;
2194 flags = gtk_theming_engine_get_state (engine);
2196 gtk_theming_engine_get (engine, flags,
2200 gtk_theming_engine_get_style (engine,
2201 "focus-line-width", &line_width,
2202 "focus-line-pattern", (gchar *) &dash_list,
2205 cairo_set_line_width (cr, (gdouble) line_width);
2209 gint n_dashes = strlen ((const gchar *) dash_list);
2210 gdouble *dashes = g_new (gdouble, n_dashes);
2211 gdouble total_length = 0;
2212 gdouble dash_offset;
2215 for (i = 0; i < n_dashes; i++)
2217 dashes[i] = dash_list[i];
2218 total_length += dash_list[i];
2221 /* The dash offset here aligns the pattern to integer pixels
2222 * by starting the dash at the right side of the left border
2223 * Negative dash offsets in cairo don't work
2224 * (https://bugs.freedesktop.org/show_bug.cgi?id=2729)
2226 dash_offset = - line_width / 2.;
2228 while (dash_offset < 0)
2229 dash_offset += total_length;
2231 cairo_set_dash (cr, dashes, n_dashes, dash_offset);
2235 cairo_rectangle (cr,
2236 x + line_width / 2.,
2237 y + line_width / 2.,
2239 height - line_width);
2241 gdk_cairo_set_source_rgba (cr, color);
2246 gdk_rgba_free (color);
2251 gtk_theming_engine_render_line (GtkThemingEngine *engine,
2258 GdkRGBA *bg_color, darker, lighter;
2259 GtkStateFlags flags;
2260 gint i, thickness, thickness_dark, thickness_light, len;
2261 cairo_matrix_t matrix;
2264 /* FIXME: thickness */
2266 thickness_dark = thickness / 2;
2267 thickness_light = thickness - thickness_dark;
2269 flags = gtk_theming_engine_get_state (engine);
2272 gtk_theming_engine_get (engine, flags,
2273 "background-color", &bg_color,
2275 color_shade (bg_color, 0.7, &darker);
2276 color_shade (bg_color, 1.3, &lighter);
2278 cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
2279 cairo_set_line_width (cr, 1);
2281 angle = atan2 (x1 - x0, y1 - y0);
2282 angle = (2 * G_PI) - angle;
2285 cairo_get_matrix (cr, &matrix);
2286 cairo_matrix_translate (&matrix, x0, y0);
2287 cairo_matrix_rotate (&matrix, angle);
2288 cairo_set_matrix (cr, &matrix);
2293 len = (gint) sqrt ((x1 * x1) + (y1 * y1));
2295 y0 = -thickness_dark;
2297 for (i = 0; i < thickness_dark; i++)
2299 gdk_cairo_set_source_rgba (cr, &lighter);
2300 add_path_line (cr, len - i - 1.5, y0, len - 0.5, y0);
2303 gdk_cairo_set_source_rgba (cr, &darker);
2304 add_path_line (cr, 0.5, y0, len - i - 1.5, y0);
2310 for (i = 0; i < thickness_light; i++)
2312 gdk_cairo_set_source_rgba (cr, &darker);
2313 add_path_line (cr, 0.5, y0, thickness_light - i + 0.5, y0);
2316 gdk_cairo_set_source_rgba (cr, &lighter);
2317 add_path_line (cr, thickness_light - i + 0.5, y0, len - 0.5, y0);
2325 gdk_rgba_free (bg_color);
2329 gtk_theming_engine_render_layout (GtkThemingEngine *engine,
2333 PangoLayout *layout)
2335 const PangoMatrix *matrix;
2337 GtkStateFlags flags;
2342 flags = gtk_theming_engine_get_state (engine);
2344 gtk_theming_engine_get (engine, flags,
2348 matrix = pango_context_get_matrix (pango_layout_get_context (layout));
2350 running = gtk_theming_engine_state_is_running (engine, GTK_STATE_PRELIGHT, &progress);
2354 GtkStateFlags other_flags;
2357 if (flags & GTK_STATE_FLAG_PRELIGHT)
2359 other_flags = flags & ~(GTK_STATE_FLAG_PRELIGHT);
2360 progress = 1 - progress;
2363 other_flags = flags | GTK_STATE_FLAG_PRELIGHT;
2365 gtk_theming_engine_get (engine, other_flags,
2369 if (fg_color && other_fg)
2371 fg_color->red = CLAMP (fg_color->red + ((other_fg->red - fg_color->red) * progress), 0, 1);
2372 fg_color->green = CLAMP (fg_color->green + ((other_fg->green - fg_color->green) * progress), 0, 1);
2373 fg_color->blue = CLAMP (fg_color->blue + ((other_fg->blue - fg_color->blue) * progress), 0, 1);
2374 fg_color->alpha = CLAMP (fg_color->alpha + ((other_fg->alpha - fg_color->alpha) * progress), 0, 1);
2378 gdk_rgba_free (other_fg);
2383 cairo_matrix_t cairo_matrix;
2384 PangoRectangle rect;
2386 cairo_matrix_init (&cairo_matrix,
2387 matrix->xx, matrix->yx,
2388 matrix->xy, matrix->yy,
2389 matrix->x0, matrix->y0);
2391 pango_layout_get_extents (layout, NULL, &rect);
2392 pango_matrix_transform_rectangle (matrix, &rect);
2393 pango_extents_to_pixels (&rect, NULL);
2395 cairo_matrix.x0 += x - rect.x;
2396 cairo_matrix.y0 += y - rect.y;
2398 cairo_set_matrix (cr, &cairo_matrix);
2401 cairo_move_to (cr, x, y);
2403 if (flags & GTK_STATE_FLAG_INSENSITIVE)
2406 cairo_set_source_rgb (cr, 1, 1, 1);
2407 cairo_move_to (cr, x + 1, y + 1);
2408 _gtk_pango_fill_layout (cr, layout);
2412 gdk_cairo_set_source_rgba (cr, fg_color);
2413 pango_cairo_show_layout (cr, layout);
2417 gdk_rgba_free (fg_color);
2421 gtk_theming_engine_render_slider (GtkThemingEngine *engine,
2427 GtkOrientation orientation)
2429 const GtkWidgetPath *path;
2432 path = gtk_theming_engine_get_path (engine);
2434 gtk_theming_engine_render_background (engine, cr, x, y, width, height);
2435 gtk_theming_engine_render_frame (engine, cr, x, y, width, height);
2437 /* FIXME: thickness */
2440 if (gtk_widget_path_is_type (path, GTK_TYPE_SCALE))
2442 if (orientation == GTK_ORIENTATION_VERTICAL)
2443 gtk_theming_engine_render_line (engine, cr,
2445 y + (gint) height / 2,
2446 x + width - thickness - 1,
2447 y + (gint) height / 2);
2449 gtk_theming_engine_render_line (engine, cr,
2450 x + (gint) width / 2,
2452 x + (gint) width / 2,
2453 y + height - thickness - 1);
2458 gtk_theming_engine_render_frame_gap (GtkThemingEngine *engine,
2464 GtkPositionType gap_side,
2468 GtkJunctionSides junction;
2469 GtkStateFlags state;
2470 gint border_width, radius;
2471 gdouble x0, y0, x1, y1, xc, yc, wc, hc;
2474 xc = yc = wc = hc = 0;
2475 state = gtk_theming_engine_get_state (engine);
2476 junction = gtk_theming_engine_get_junction_sides (engine);
2477 gtk_theming_engine_get (engine, state,
2478 "border-width", &border,
2479 "border-radius", &radius,
2482 border_width = MIN (MIN (border->top, border->bottom),
2483 MIN (border->left, border->right));
2490 xc = x + xy0_gap + border_width;
2492 wc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2495 if (xy0_gap < radius)
2496 junction |= GTK_JUNCTION_CORNER_TOPLEFT;
2498 if (xy1_gap > width - radius)
2499 junction |= GTK_JUNCTION_CORNER_TOPRIGHT;
2501 case GTK_POS_BOTTOM:
2502 xc = x + xy0_gap + border_width;
2503 yc = y + height - border_width;
2504 wc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2507 if (xy0_gap < radius)
2508 junction |= GTK_JUNCTION_CORNER_BOTTOMLEFT;
2510 if (xy1_gap > width - radius)
2511 junction |= GTK_JUNCTION_CORNER_BOTTOMRIGHT;
2516 yc = y + xy0_gap + border_width;
2518 hc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2520 if (xy0_gap < radius)
2521 junction |= GTK_JUNCTION_CORNER_TOPLEFT;
2523 if (xy1_gap > height - radius)
2524 junction |= GTK_JUNCTION_CORNER_BOTTOMLEFT;
2528 xc = x + width - border_width;
2529 yc = y + xy0_gap + border_width;
2531 hc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2533 if (xy0_gap < radius)
2534 junction |= GTK_JUNCTION_CORNER_TOPRIGHT;
2536 if (xy1_gap > height - radius)
2537 junction |= GTK_JUNCTION_CORNER_BOTTOMRIGHT;
2542 cairo_clip_extents (cr, &x0, &y0, &x1, &y1);
2543 cairo_rectangle (cr, x0, y0, x1 - x0, yc - y0);
2544 cairo_rectangle (cr, x0, yc, xc - x0, hc);
2545 cairo_rectangle (cr, xc + wc, yc, x1 - (xc + wc), hc);
2546 cairo_rectangle (cr, x0, yc + hc, x1 - x0, y1 - (yc + hc));
2549 render_frame_internal (engine, cr,
2550 x, y, width, height,
2555 gtk_border_free (border);
2559 gtk_theming_engine_render_extension (GtkThemingEngine *engine,
2565 GtkPositionType gap_side)
2567 GtkJunctionSides junction = 0;
2568 guint hidden_side = 0;
2575 junction = GTK_JUNCTION_LEFT;
2576 hidden_side = SIDE_LEFT;
2578 cairo_translate (cr, x + width, y);
2579 cairo_rotate (cr, G_PI / 2);
2582 junction = GTK_JUNCTION_RIGHT;
2583 hidden_side = SIDE_RIGHT;
2585 cairo_translate (cr, x, y + height);
2586 cairo_rotate (cr, - G_PI / 2);
2589 junction = GTK_JUNCTION_TOP;
2590 hidden_side = SIDE_TOP;
2592 cairo_translate (cr, x + width, y + height);
2593 cairo_rotate (cr, G_PI);
2595 case GTK_POS_BOTTOM:
2596 junction = GTK_JUNCTION_BOTTOM;
2597 hidden_side = SIDE_BOTTOM;
2599 cairo_translate (cr, x, y);
2603 if (gap_side == GTK_POS_TOP ||
2604 gap_side == GTK_POS_BOTTOM)
2605 render_background_internal (engine, cr,
2606 0, 0, width, height,
2607 GTK_JUNCTION_BOTTOM);
2609 render_background_internal (engine, cr,
2610 0, 0, height, width,
2611 GTK_JUNCTION_BOTTOM);
2616 render_frame_internal (engine, cr,
2617 x, y, width, height,
2618 hidden_side, junction);
2624 render_dot (cairo_t *cr,
2625 const GdkRGBA *lighter,
2626 const GdkRGBA *darker,
2631 size = CLAMP ((gint) size, 2, 3);
2635 gdk_cairo_set_source_rgba (cr, lighter);
2636 cairo_rectangle (cr, x, y, 1, 1);
2637 cairo_rectangle (cr, x + 1, y + 1, 1, 1);
2642 gdk_cairo_set_source_rgba (cr, lighter);
2643 cairo_rectangle (cr, x, y, 2, 1);
2644 cairo_rectangle (cr, x, y, 1, 2);
2647 gdk_cairo_set_source_rgba (cr, darker);
2648 cairo_rectangle (cr, x + 1, y + 1, 2, 1);
2649 cairo_rectangle (cr, x + 2, y, 1, 2);
2655 gtk_theming_engine_render_handle (GtkThemingEngine *engine,
2662 GtkStateFlags flags;
2664 GdkRGBA lighter, darker;
2668 flags = gtk_theming_engine_get_state (engine);
2670 cairo_set_line_width (cr, 1);
2672 gtk_theming_engine_get (engine, flags,
2673 "background-color", &bg_color,
2675 color_shade (bg_color, 0.7, &darker);
2676 color_shade (bg_color, 1.3, &lighter);
2678 gdk_cairo_set_source_rgba (cr, bg_color);
2679 cairo_rectangle (cr, x, y, width, height);
2682 if (gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_GRIP))
2684 GtkJunctionSides sides;
2688 cairo_set_line_width (cr, 1.0);
2689 sides = gtk_theming_engine_get_junction_sides (engine);
2691 /* reduce confusing values to a meaningful state */
2692 if ((sides & (GTK_JUNCTION_CORNER_TOPLEFT | GTK_JUNCTION_CORNER_BOTTOMRIGHT)) == (GTK_JUNCTION_CORNER_TOPLEFT | GTK_JUNCTION_CORNER_BOTTOMRIGHT))
2693 sides &= ~GTK_JUNCTION_CORNER_TOPLEFT;
2695 if ((sides & (GTK_JUNCTION_CORNER_TOPRIGHT | GTK_JUNCTION_CORNER_BOTTOMLEFT)) == (GTK_JUNCTION_CORNER_TOPRIGHT | GTK_JUNCTION_CORNER_BOTTOMLEFT))
2696 sides &= ~GTK_JUNCTION_CORNER_TOPRIGHT;
2699 sides = GTK_JUNCTION_CORNER_BOTTOMRIGHT;
2701 /* align drawing area to the connected side */
2702 if (sides == GTK_JUNCTION_LEFT)
2707 else if (sides == GTK_JUNCTION_CORNER_TOPLEFT)
2711 else if (height < width)
2714 else if (sides == GTK_JUNCTION_CORNER_BOTTOMLEFT)
2716 /* make it square, aligning to bottom left */
2719 y += (height - width);
2722 else if (height < width)
2725 else if (sides == GTK_JUNCTION_RIGHT)
2727 /* aligning to right */
2730 x += (width - height);
2734 else if (sides == GTK_JUNCTION_CORNER_TOPRIGHT)
2738 else if (height < width)
2740 x += (width - height);
2744 else if (sides == GTK_JUNCTION_CORNER_BOTTOMRIGHT)
2746 /* make it square, aligning to bottom right */
2749 y += (height - width);
2752 else if (height < width)
2754 x += (width - height);
2758 else if (sides == GTK_JUNCTION_TOP)
2763 else if (sides == GTK_JUNCTION_BOTTOM)
2765 /* align to bottom */
2768 y += (height - width);
2773 g_assert_not_reached ();
2775 if (sides == GTK_JUNCTION_LEFT ||
2776 sides == GTK_JUNCTION_RIGHT)
2782 while (xi < x + width)
2784 gdk_cairo_set_source_rgba (cr, &lighter);
2785 add_path_line (cr, x, y, x, y + height);
2789 gdk_cairo_set_source_rgba (cr, &darker);
2790 add_path_line (cr, xi, y, xi, y + height);
2795 else if (sides == GTK_JUNCTION_TOP ||
2796 sides == GTK_JUNCTION_BOTTOM)
2802 while (yi < y + height)
2804 gdk_cairo_set_source_rgba (cr, &lighter);
2805 add_path_line (cr, x, yi, x + width, yi);
2809 gdk_cairo_set_source_rgba (cr, &darker);
2810 add_path_line (cr, x, yi, x + width, yi);
2815 else if (sides == GTK_JUNCTION_CORNER_TOPLEFT)
2824 gdk_cairo_set_source_rgba (cr, &darker);
2825 add_path_line (cr, xi, y, x, yi);
2831 add_path_line (cr, xi, y, x, yi);
2837 gdk_cairo_set_source_rgba (cr, &lighter);
2838 add_path_line (cr, xi, y, x, yi);
2845 else if (sides == GTK_JUNCTION_CORNER_TOPRIGHT)
2852 while (xi < (x + width - 3))
2854 gdk_cairo_set_source_rgba (cr, &lighter);
2855 add_path_line (cr, xi, y, x + width, yi);
2861 gdk_cairo_set_source_rgba (cr, &darker);
2862 add_path_line (cr, xi, y, x + width, yi);
2868 add_path_line (cr, xi, y, x + width, yi);
2875 else if (sides == GTK_JUNCTION_CORNER_BOTTOMLEFT)
2884 gdk_cairo_set_source_rgba (cr, &darker);
2885 add_path_line (cr, x, yi, xi, y + height);
2891 add_path_line (cr, x, yi, xi, y + height);
2897 gdk_cairo_set_source_rgba (cr, &lighter);
2898 add_path_line (cr, x, yi, xi, y + height);
2905 else if (sides == GTK_JUNCTION_CORNER_BOTTOMRIGHT)
2912 while (xi < (x + width - 3))
2914 gdk_cairo_set_source_rgba (cr, &lighter);
2915 add_path_line (cr, xi, y + height, x + width, yi);
2921 gdk_cairo_set_source_rgba (cr, &darker);
2922 add_path_line (cr, xi, y + height, x + width, yi);
2928 add_path_line (cr, xi, y + height, x + width, yi);
2938 else if (gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_PANE_SEPARATOR))
2941 for (xx = x + width / 2 - 15; xx <= x + width / 2 + 15; xx += 5)
2942 render_dot (cr, &lighter, &darker, xx, y + height / 2 - 1, 3);
2944 for (yy = y + height / 2 - 15; yy <= y + height / 2 + 15; yy += 5)
2945 render_dot (cr, &lighter, &darker, x + width / 2 - 1, yy, 3);
2949 for (yy = y; yy < y + height; yy += 3)
2950 for (xx = x; xx < x + width; xx += 6)
2952 render_dot (cr, &lighter, &darker, xx, yy, 2);
2953 render_dot (cr, &lighter, &darker, xx + 3, yy + 1, 2);
2959 gdk_rgba_free (bg_color);
2963 gtk_theming_engine_render_activity (GtkThemingEngine *engine,
2970 if (gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_SPINNER))
2972 GtkStateFlags state;
2973 guint num_steps, step;
2983 state = gtk_theming_engine_get_state (engine);
2984 gtk_theming_engine_get (engine, state,
2988 if (gtk_theming_engine_state_is_running (engine, GTK_STATE_ACTIVE, &progress))
2989 step = (guint) (progress * num_steps);
2995 cairo_translate (cr, x, y);
2997 /* draw clip region */
2998 cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
3002 radius = MIN (width / 2, height / 2);
3003 half = num_steps / 2;
3005 for (i = 0; i < num_steps; i++)
3007 gint inset = 0.7 * radius;
3009 /* transparency is a function of time and intial value */
3010 gdouble t = (gdouble) ((i + num_steps - step)
3011 % num_steps) / num_steps;
3015 cairo_set_source_rgba (cr,
3021 cairo_set_line_width (cr, 2.0);
3023 dx + (radius - inset) * cos (i * G_PI / half),
3024 dy + (radius - inset) * sin (i * G_PI / half));
3026 dx + radius * cos (i * G_PI / half),
3027 dy + radius * sin (i * G_PI / half));
3035 gdk_rgba_free (color);
3039 gtk_theming_engine_render_background (engine, cr, x, y, width, height);
3040 gtk_theming_engine_render_frame (engine, cr, x, y, width, height);
3045 scale_or_ref (GdkPixbuf *src,
3049 if (width == gdk_pixbuf_get_width (src) &&
3050 height == gdk_pixbuf_get_height (src))
3051 return g_object_ref (src);
3053 return gdk_pixbuf_scale_simple (src,
3055 GDK_INTERP_BILINEAR);
3059 lookup_icon_size (GtkThemingEngine *engine,
3065 GtkSettings *settings;
3067 screen = gtk_theming_engine_get_screen (engine);
3068 settings = gtk_settings_get_for_screen (screen);
3070 return gtk_icon_size_lookup_for_settings (settings, size, width, height);
3073 /* Kudos to the gnome-panel guys. */
3075 colorshift_pixbuf (GdkPixbuf *src,
3080 gint width, height, has_alpha, src_rowstride, dest_rowstride;
3081 guchar *target_pixels;
3082 guchar *original_pixels;
3088 has_alpha = gdk_pixbuf_get_has_alpha (src);
3089 width = gdk_pixbuf_get_width (src);
3090 height = gdk_pixbuf_get_height (src);
3091 src_rowstride = gdk_pixbuf_get_rowstride (src);
3092 dest_rowstride = gdk_pixbuf_get_rowstride (dest);
3093 original_pixels = gdk_pixbuf_get_pixels (src);
3094 target_pixels = gdk_pixbuf_get_pixels (dest);
3096 for (i = 0; i < height; i++)
3098 pix_dest = target_pixels + i * dest_rowstride;
3099 pix_src = original_pixels + i * src_rowstride;
3101 for (j = 0; j < width; j++)
3108 *(pix_dest++) = CLAMP (val, 0, 255);
3111 *(pix_dest++) = CLAMP (val, 0, 255);
3114 *(pix_dest++) = CLAMP (val, 0, 255);
3117 *(pix_dest++) = *(pix_src++);
3123 gtk_theming_engine_render_icon_pixbuf (GtkThemingEngine *engine,
3124 const GtkIconSource *source,
3129 GdkPixbuf *base_pixbuf;
3130 GtkStateFlags state;
3134 base_pixbuf = gtk_icon_source_get_pixbuf (source);
3135 state = gtk_theming_engine_get_state (engine);
3137 g_return_val_if_fail (base_pixbuf != NULL, NULL);
3139 if (size != (GtkIconSize) -1 &&
3140 !lookup_icon_size (engine, size, &width, &height))
3142 g_warning (G_STRLOC ": invalid icon size '%d'", size);
3146 /* If the size was wildcarded, and we're allowed to scale, then scale; otherwise,
3149 if (size != (GtkIconSize) -1 &&
3150 gtk_icon_source_get_size_wildcarded (source))
3151 scaled = scale_or_ref (base_pixbuf, width, height);
3153 scaled = g_object_ref (base_pixbuf);
3155 /* If the state was wildcarded, then generate a state. */
3156 if (gtk_icon_source_get_state_wildcarded (source))
3158 if (state & GTK_STATE_FLAG_INSENSITIVE)
3160 stated = gdk_pixbuf_copy (scaled);
3161 gdk_pixbuf_saturate_and_pixelate (scaled, stated,
3163 g_object_unref (scaled);
3165 else if (state & GTK_STATE_FLAG_PRELIGHT)
3167 stated = gdk_pixbuf_copy (scaled);
3168 colorshift_pixbuf (scaled, stated, 30);
3169 g_object_unref (scaled);