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 "gtkhslaprivate.h"
39 #include "gtkthemingengineprivate.h"
40 #include "gtkroundedboxprivate.h"
41 #include "gtkthemingbackgroundprivate.h"
43 #include "fallback-c89.c"
46 * SECTION:gtkthemingengine
47 * @Short_description: Theming renderers
48 * @Title: GtkThemingEngine
49 * @See_also: #GtkStyleContext
51 * #GtkThemingEngine is the object used for rendering themed content
52 * in GTK+ widgets. Even though GTK+ has a default implementation,
53 * it can be overridden in CSS files by enforcing a #GtkThemingEngine
54 * object to be loaded as a module.
56 * In order to implement a theming engine, a #GtkThemingEngine subclass
57 * must be created, alongside the CSS file that will reference it, the
58 * theming engine would be created as an .so library, and installed in
59 * $(gtk-modules-dir)/theming-engines/.
61 * #GtkThemingEngine<!-- -->s have limited access to the object they are
62 * rendering, the #GtkThemingEngine API has read-only accessors to the
63 * style information contained in the rendered object's #GtkStyleContext.
71 struct GtkThemingEnginePrivate
73 GtkStyleContext *context;
77 #define GTK_THEMING_ENGINE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_THEMING_ENGINE, GtkThemingEnginePrivate))
79 static void gtk_theming_engine_finalize (GObject *object);
80 static void gtk_theming_engine_impl_set_property (GObject *object,
84 static void gtk_theming_engine_impl_get_property (GObject *object,
89 static void gtk_theming_engine_render_check (GtkThemingEngine *engine,
95 static void gtk_theming_engine_render_option (GtkThemingEngine *engine,
101 static void gtk_theming_engine_render_arrow (GtkThemingEngine *engine,
107 static void gtk_theming_engine_render_background (GtkThemingEngine *engine,
113 static void gtk_theming_engine_render_frame (GtkThemingEngine *engine,
119 static void gtk_theming_engine_render_expander (GtkThemingEngine *engine,
125 static void gtk_theming_engine_render_focus (GtkThemingEngine *engine,
131 static void gtk_theming_engine_render_layout (GtkThemingEngine *engine,
135 PangoLayout *layout);
136 static void gtk_theming_engine_render_line (GtkThemingEngine *engine,
142 static void gtk_theming_engine_render_slider (GtkThemingEngine *engine,
148 GtkOrientation orientation);
149 static void gtk_theming_engine_render_frame_gap (GtkThemingEngine *engine,
155 GtkPositionType gap_side,
158 static void gtk_theming_engine_render_extension (GtkThemingEngine *engine,
164 GtkPositionType gap_side);
165 static void gtk_theming_engine_render_handle (GtkThemingEngine *engine,
171 static void gtk_theming_engine_render_activity (GtkThemingEngine *engine,
177 static GdkPixbuf * gtk_theming_engine_render_icon_pixbuf (GtkThemingEngine *engine,
178 const GtkIconSource *source,
180 static void gtk_theming_engine_render_icon (GtkThemingEngine *engine,
186 G_DEFINE_TYPE (GtkThemingEngine, gtk_theming_engine, G_TYPE_OBJECT)
189 typedef struct GtkThemingModule GtkThemingModule;
190 typedef struct GtkThemingModuleClass GtkThemingModuleClass;
192 struct GtkThemingModule
194 GTypeModule parent_instance;
198 void (*init) (GTypeModule *module);
200 GtkThemingEngine * (*create_engine) (void);
203 struct GtkThemingModuleClass
205 GTypeModuleClass parent_class;
208 #define GTK_TYPE_THEMING_MODULE (gtk_theming_module_get_type ())
209 #define GTK_THEMING_MODULE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_THEMING_MODULE, GtkThemingModule))
210 #define GTK_IS_THEMING_MODULE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_THEMING_MODULE))
212 GType gtk_theming_module_get_type (void);
214 G_DEFINE_TYPE (GtkThemingModule, gtk_theming_module, G_TYPE_TYPE_MODULE);
217 gtk_theming_engine_class_init (GtkThemingEngineClass *klass)
219 GObjectClass *object_class = G_OBJECT_CLASS (klass);
221 object_class->finalize = gtk_theming_engine_finalize;
222 object_class->set_property = gtk_theming_engine_impl_set_property;
223 object_class->get_property = gtk_theming_engine_impl_get_property;
225 klass->render_icon = gtk_theming_engine_render_icon;
226 klass->render_check = gtk_theming_engine_render_check;
227 klass->render_option = gtk_theming_engine_render_option;
228 klass->render_arrow = gtk_theming_engine_render_arrow;
229 klass->render_background = gtk_theming_engine_render_background;
230 klass->render_frame = gtk_theming_engine_render_frame;
231 klass->render_expander = gtk_theming_engine_render_expander;
232 klass->render_focus = gtk_theming_engine_render_focus;
233 klass->render_layout = gtk_theming_engine_render_layout;
234 klass->render_line = gtk_theming_engine_render_line;
235 klass->render_slider = gtk_theming_engine_render_slider;
236 klass->render_frame_gap = gtk_theming_engine_render_frame_gap;
237 klass->render_extension = gtk_theming_engine_render_extension;
238 klass->render_handle = gtk_theming_engine_render_handle;
239 klass->render_activity = gtk_theming_engine_render_activity;
240 klass->render_icon_pixbuf = gtk_theming_engine_render_icon_pixbuf;
243 * GtkThemingEngine:name:
245 * The theming engine name, this name will be used when registering
246 * custom properties, for a theming engine named "Clearlooks" registering
247 * a "glossy" custom property, it could be referenced in the CSS file as
250 * -Clearlooks-glossy: true;
255 g_object_class_install_property (object_class,
257 g_param_spec_string ("name",
259 P_("Theming engine name"),
261 G_PARAM_CONSTRUCT_ONLY | GTK_PARAM_READWRITE));
263 g_type_class_add_private (object_class, sizeof (GtkThemingEnginePrivate));
267 gtk_theming_engine_init (GtkThemingEngine *engine)
269 engine->priv = GTK_THEMING_ENGINE_GET_PRIVATE (engine);
273 gtk_theming_engine_finalize (GObject *object)
275 GtkThemingEnginePrivate *priv;
277 priv = GTK_THEMING_ENGINE (object)->priv;
280 G_OBJECT_GET_CLASS (gtk_theming_engine_parent_class)->finalize (object);
284 gtk_theming_engine_impl_set_property (GObject *object,
289 GtkThemingEnginePrivate *priv;
291 priv = GTK_THEMING_ENGINE (object)->priv;
299 priv->name = g_value_dup_string (value);
302 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
308 gtk_theming_engine_impl_get_property (GObject *object,
313 GtkThemingEnginePrivate *priv;
315 priv = GTK_THEMING_ENGINE (object)->priv;
320 g_value_set_string (value, priv->name);
323 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
329 _gtk_theming_engine_set_context (GtkThemingEngine *engine,
330 GtkStyleContext *context)
332 GtkThemingEnginePrivate *priv;
334 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
335 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
338 priv->context = context;
342 _gtk_theming_engine_get_context (GtkThemingEngine *engine)
344 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
346 return engine->priv->context;
350 _gtk_theming_engine_peek_property (GtkThemingEngine *engine,
353 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
355 return _gtk_style_context_peek_property (engine->priv->context, property_id);
359 * gtk_theming_engine_get_property:
360 * @engine: a #GtkThemingEngine
361 * @property: the property name
362 * @state: state to retrieve the value for
363 * @value: (out) (transfer full): return location for the property value,
364 * you must free this memory using g_value_unset() once you are
367 * Gets a property value as retrieved from the style settings that apply
368 * to the currently rendered element.
373 gtk_theming_engine_get_property (GtkThemingEngine *engine,
374 const gchar *property,
378 GtkThemingEnginePrivate *priv;
380 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
381 g_return_if_fail (property != NULL);
382 g_return_if_fail (value != NULL);
385 gtk_style_context_get_property (priv->context, property, state, value);
389 * gtk_theming_engine_get_valist:
390 * @engine: a #GtkThemingEngine
391 * @state: state to retrieve values for
392 * @args: va_list of property name/return location pairs, followed by %NULL
394 * Retrieves several style property values that apply to the currently
400 gtk_theming_engine_get_valist (GtkThemingEngine *engine,
404 GtkThemingEnginePrivate *priv;
406 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
409 gtk_style_context_get_valist (priv->context, state, args);
413 * gtk_theming_engine_get:
414 * @engine: a #GtkThemingEngine
415 * @state: state to retrieve values for
416 * @...: property name /return value pairs, followed by %NULL
418 * Retrieves several style property values that apply to the currently
424 gtk_theming_engine_get (GtkThemingEngine *engine,
428 GtkThemingEnginePrivate *priv;
431 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
435 va_start (args, state);
436 gtk_style_context_get_valist (priv->context, state, args);
441 * gtk_theming_engine_get_style_property:
442 * @engine: a #GtkThemingEngine
443 * @property_name: the name of the widget style property
444 * @value: Return location for the property value, free with
445 * g_value_unset() after use.
447 * Gets the value for a widget style property.
452 gtk_theming_engine_get_style_property (GtkThemingEngine *engine,
453 const gchar *property_name,
456 GtkThemingEnginePrivate *priv;
458 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
459 g_return_if_fail (property_name != NULL);
462 gtk_style_context_get_style_property (priv->context, property_name, value);
466 * gtk_theming_engine_get_style_valist:
467 * @engine: a #GtkThemingEngine
468 * @args: va_list of property name/return location pairs, followed by %NULL
470 * Retrieves several widget style properties from @engine according to the
471 * currently rendered content's style.
476 gtk_theming_engine_get_style_valist (GtkThemingEngine *engine,
479 GtkThemingEnginePrivate *priv;
481 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
484 gtk_style_context_get_style_valist (priv->context, args);
488 * gtk_theming_engine_get_style:
489 * @engine: a #GtkThemingEngine
490 * @...: property name /return value pairs, followed by %NULL
492 * Retrieves several widget style properties from @engine according
493 * to the currently rendered content's style.
498 gtk_theming_engine_get_style (GtkThemingEngine *engine,
501 GtkThemingEnginePrivate *priv;
504 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
508 va_start (args, engine);
509 gtk_style_context_get_style_valist (priv->context, args);
514 * gtk_theming_engine_lookup_color:
515 * @engine: a #GtkThemingEngine
516 * @color_name: color name to lookup
517 * @color: (out): Return location for the looked up color
519 * Looks up and resolves a color name in the current style's color map.
521 * Returns: %TRUE if @color_name was found and resolved, %FALSE otherwise
524 gtk_theming_engine_lookup_color (GtkThemingEngine *engine,
525 const gchar *color_name,
528 GtkThemingEnginePrivate *priv;
530 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
531 g_return_val_if_fail (color_name != NULL, FALSE);
534 return gtk_style_context_lookup_color (priv->context, color_name, color);
538 * gtk_theming_engine_get_state:
539 * @engine: a #GtkThemingEngine
541 * returns the state used when rendering.
543 * Returns: the state flags
548 gtk_theming_engine_get_state (GtkThemingEngine *engine)
550 GtkThemingEnginePrivate *priv;
552 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0);
555 return gtk_style_context_get_state (priv->context);
559 * gtk_theming_engine_state_is_running:
560 * @engine: a #GtkThemingEngine
561 * @state: a widget state
562 * @progress: (out): return location for the transition progress
564 * Returns %TRUE if there is a transition animation running for the
565 * current region (see gtk_style_context_push_animatable_region()).
567 * If @progress is not %NULL, the animation progress will be returned
568 * there, 0.0 means the state is closest to being %FALSE, while 1.0 means
569 * it's closest to being %TRUE. This means transition animations will
570 * run from 0 to 1 when @state is being set to %TRUE and from 1 to 0 when
571 * it's being set to %FALSE.
573 * Returns: %TRUE if there is a running transition animation for @state.
577 * Deprecated: 3.6: Always returns %FALSE
580 gtk_theming_engine_state_is_running (GtkThemingEngine *engine,
584 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
590 * gtk_theming_engine_get_path:
591 * @engine: a #GtkThemingEngine
593 * Returns the widget path used for style matching.
595 * Returns: (transfer none): A #GtkWidgetPath
599 const GtkWidgetPath *
600 gtk_theming_engine_get_path (GtkThemingEngine *engine)
602 GtkThemingEnginePrivate *priv;
604 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
607 return gtk_style_context_get_path (priv->context);
611 * gtk_theming_engine_has_class:
612 * @engine: a #GtkThemingEngine
613 * @style_class: class name to look up
615 * Returns %TRUE if the currently rendered contents have
616 * defined the given class name.
618 * Returns: %TRUE if @engine has @class_name defined
623 gtk_theming_engine_has_class (GtkThemingEngine *engine,
624 const gchar *style_class)
626 GtkThemingEnginePrivate *priv;
628 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
631 return gtk_style_context_has_class (priv->context, style_class);
635 * gtk_theming_engine_has_region:
636 * @engine: a #GtkThemingEngine
637 * @style_region: a region name
638 * @flags: (out) (allow-none): return location for region flags
640 * Returns %TRUE if the currently rendered contents have the
641 * region defined. If @flags_return is not %NULL, it is set
642 * to the flags affecting the region.
644 * Returns: %TRUE if region is defined
649 gtk_theming_engine_has_region (GtkThemingEngine *engine,
650 const gchar *style_region,
651 GtkRegionFlags *flags)
653 GtkThemingEnginePrivate *priv;
658 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
661 return gtk_style_context_has_region (priv->context, style_region, flags);
665 * gtk_theming_engine_get_direction:
666 * @engine: a #GtkThemingEngine
668 * Returns the widget direction used for rendering.
670 * Returns: the widget direction
674 * Deprecated: 3.8: Use gtk_theming_engine_get_state() and
675 * check for #GTK_STATE_FLAG_DIR_LTR and
676 * #GTK_STATE_FLAG_DIR_RTL instead.
679 gtk_theming_engine_get_direction (GtkThemingEngine *engine)
681 GtkThemingEnginePrivate *priv;
683 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), GTK_TEXT_DIR_LTR);
686 G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
687 return gtk_style_context_get_direction (priv->context);
688 G_GNUC_END_IGNORE_DEPRECATIONS;
692 * gtk_theming_engine_get_junction_sides:
693 * @engine: a #GtkThemingEngine
695 * Returns the widget direction used for rendering.
697 * Returns: the widget direction
702 gtk_theming_engine_get_junction_sides (GtkThemingEngine *engine)
704 GtkThemingEnginePrivate *priv;
706 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0);
709 return gtk_style_context_get_junction_sides (priv->context);
713 * gtk_theming_engine_get_color:
714 * @engine: a #GtkThemingEngine
715 * @state: state to retrieve the color for
716 * @color: (out): return value for the foreground color
718 * Gets the foreground color for a given state.
723 gtk_theming_engine_get_color (GtkThemingEngine *engine,
727 GtkThemingEnginePrivate *priv;
729 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
732 gtk_style_context_get_color (priv->context, state, color);
736 * gtk_theming_engine_get_background_color:
737 * @engine: a #GtkThemingEngine
738 * @state: state to retrieve the color for
739 * @color: (out): return value for the background color
741 * Gets the background color for a given state.
746 gtk_theming_engine_get_background_color (GtkThemingEngine *engine,
750 GtkThemingEnginePrivate *priv;
752 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
755 gtk_style_context_get_background_color (priv->context, state, color);
759 * gtk_theming_engine_get_border_color:
760 * @engine: a #GtkThemingEngine
761 * @state: state to retrieve the color for
762 * @color: (out): return value for the border color
764 * Gets the border color for a given state.
769 gtk_theming_engine_get_border_color (GtkThemingEngine *engine,
773 GtkThemingEnginePrivate *priv;
775 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
778 gtk_style_context_get_border_color (priv->context, state, color);
782 * gtk_theming_engine_get_border:
783 * @engine: a #GtkThemingEngine
784 * @state: state to retrieve the border for
785 * @border: (out): return value for the border settings
787 * Gets the border for a given state as a #GtkBorder.
792 gtk_theming_engine_get_border (GtkThemingEngine *engine,
796 GtkThemingEnginePrivate *priv;
798 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
801 gtk_style_context_get_border (priv->context, state, border);
805 * gtk_theming_engine_get_padding:
806 * @engine: a #GtkThemingEngine
807 * @state: state to retrieve the padding for
808 * @padding: (out): return value for the padding settings
810 * Gets the padding for a given state as a #GtkBorder.
815 gtk_theming_engine_get_padding (GtkThemingEngine *engine,
819 GtkThemingEnginePrivate *priv;
821 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
824 gtk_style_context_get_padding (priv->context, state, padding);
828 * gtk_theming_engine_get_margin:
829 * @engine: a #GtkThemingEngine
830 * @state: state to retrieve the border for
831 * @margin: (out): return value for the margin settings
833 * Gets the margin for a given state as a #GtkBorder.
838 gtk_theming_engine_get_margin (GtkThemingEngine *engine,
842 GtkThemingEnginePrivate *priv;
844 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
847 gtk_style_context_get_margin (priv->context, state, margin);
851 * gtk_theming_engine_get_font:
852 * @engine: a #GtkThemingEngine
853 * @state: state to retrieve the font for
855 * Returns the font description for a given state.
857 * Returns: (transfer none): the #PangoFontDescription for the given
858 * state. This object is owned by GTK+ and should not be
863 * Deprecated: 3.8: Use gtk_theming_engine_get()
865 const PangoFontDescription *
866 gtk_theming_engine_get_font (GtkThemingEngine *engine,
869 GtkThemingEnginePrivate *priv;
871 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
873 G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
875 return gtk_style_context_get_font (priv->context, state);
876 G_GNUC_END_IGNORE_DEPRECATIONS;
879 /* GtkThemingModule */
882 gtk_theming_module_load (GTypeModule *type_module)
884 GtkThemingModule *theming_module;
886 gchar *name, *module_path;
888 theming_module = GTK_THEMING_MODULE (type_module);
889 name = theming_module->name;
890 module_path = _gtk_find_module (name, "theming-engines");
895 module = g_module_open (module_path, G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL);
896 g_free (module_path);
901 if (!g_module_symbol (module, "theme_init",
902 (gpointer *) &theming_module->init) ||
903 !g_module_symbol (module, "theme_exit",
904 (gpointer *) &theming_module->exit) ||
905 !g_module_symbol (module, "create_engine",
906 (gpointer *) &theming_module->create_engine))
908 g_module_close (module);
913 theming_module->module = module;
915 theming_module->init (G_TYPE_MODULE (theming_module));
921 gtk_theming_module_unload (GTypeModule *type_module)
923 GtkThemingModule *theming_module;
925 theming_module = GTK_THEMING_MODULE (type_module);
927 theming_module->exit ();
929 g_module_close (theming_module->module);
931 theming_module->module = NULL;
932 theming_module->init = NULL;
933 theming_module->exit = NULL;
934 theming_module->create_engine = NULL;
938 gtk_theming_module_class_init (GtkThemingModuleClass *klass)
940 GTypeModuleClass *module_class = G_TYPE_MODULE_CLASS (klass);
942 module_class->load = gtk_theming_module_load;
943 module_class->unload = gtk_theming_module_unload;
947 gtk_theming_module_init (GtkThemingModule *module)
952 * gtk_theming_engine_load:
953 * @name: Theme engine name to load
955 * Loads and initializes a theming engine module from the
956 * standard directories.
958 * Returns: (transfer none): A theming engine, or %NULL if
959 * the engine @name doesn't exist.
962 gtk_theming_engine_load (const gchar *name)
964 static GHashTable *engines = NULL;
965 static GtkThemingEngine *default_engine;
966 GtkThemingEngine *engine = NULL;
971 engines = g_hash_table_new (g_str_hash, g_str_equal);
973 engine = g_hash_table_lookup (engines, name);
977 GtkThemingModule *module;
979 module = g_object_new (GTK_TYPE_THEMING_MODULE, NULL);
980 g_type_module_set_name (G_TYPE_MODULE (module), name);
981 module->name = g_strdup (name);
983 if (module && g_type_module_use (G_TYPE_MODULE (module)))
985 engine = (module->create_engine) ();
988 g_hash_table_insert (engines, module->name, engine);
994 if (G_UNLIKELY (!default_engine))
995 default_engine = g_object_new (GTK_TYPE_THEMING_ENGINE, NULL);
997 engine = default_engine;
1004 * gtk_theming_engine_get_screen:
1005 * @engine: a #GtkThemingEngine
1007 * Returns the #GdkScreen to which @engine currently rendering to.
1009 * Returns: (transfer none): a #GdkScreen, or %NULL.
1012 gtk_theming_engine_get_screen (GtkThemingEngine *engine)
1014 GtkThemingEnginePrivate *priv;
1016 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
1018 priv = engine->priv;
1019 return gtk_style_context_get_screen (priv->context);
1022 /* Paint method implementations */
1024 gtk_theming_engine_render_check (GtkThemingEngine *engine,
1031 GdkRGBA fg_color, bg_color;
1032 GtkStateFlags flags;
1033 gint exterior_size, interior_size, thickness, pad;
1034 GtkBorderStyle border_style;
1037 GtkThemingBackground bg;
1039 _gtk_theming_background_init (&bg, engine,
1042 gtk_theming_engine_get_junction_sides (engine));
1044 if (_gtk_theming_background_has_background_image (&bg))
1046 _gtk_theming_background_render (&bg, cr);
1050 flags = gtk_theming_engine_get_state (engine);
1053 gtk_theming_engine_get_color (engine, flags, &fg_color);
1054 gtk_theming_engine_get_background_color (engine, flags, &bg_color);
1055 gtk_theming_engine_get_border (engine, flags, &border);
1056 border_style = _gtk_css_border_style_value_get
1057 (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
1059 border_width = MIN (MIN (border.top, border.bottom),
1060 MIN (border.left, border.right));
1061 exterior_size = MIN (width, height);
1063 if (exterior_size % 2 == 0) /* Ensure odd */
1066 /* FIXME: thickness */
1068 pad = thickness + MAX (1, (exterior_size - 2 * thickness) / 9);
1069 interior_size = MAX (1, exterior_size - 2 * pad);
1071 if (interior_size < 7)
1074 pad = MAX (0, (exterior_size - interior_size) / 2);
1077 x -= (1 + exterior_size - (gint) width) / 2;
1078 y -= (1 + exterior_size - (gint) height) / 2;
1080 if (border_style == GTK_BORDER_STYLE_SOLID)
1082 GdkRGBA border_color;
1084 cairo_set_line_width (cr, border_width);
1085 gtk_theming_engine_get_border_color (engine, flags, &border_color);
1087 cairo_rectangle (cr, x + 0.5, y + 0.5, exterior_size - 1, exterior_size - 1);
1088 gdk_cairo_set_source_rgba (cr, &bg_color);
1089 cairo_fill_preserve (cr);
1091 gdk_cairo_set_source_rgba (cr, &border_color);
1095 gdk_cairo_set_source_rgba (cr, &fg_color);
1097 if (flags & GTK_STATE_FLAG_INCONSISTENT)
1099 int line_thickness = MAX (1, (3 + interior_size * 2) / 7);
1101 cairo_rectangle (cr,
1103 y + pad + (1 + interior_size - line_thickness) / 2,
1110 if (flags & GTK_STATE_FLAG_ACTIVE)
1112 cairo_translate (cr,
1115 cairo_scale (cr, interior_size / 7., interior_size / 7.);
1117 cairo_rectangle (cr, 0, 0, 7, 7);
1120 cairo_move_to (cr, 7.0, 0.0);
1121 cairo_line_to (cr, 7.5, 1.0);
1122 cairo_curve_to (cr, 5.3, 2.0,
1125 cairo_curve_to (cr, 3.0, 5.7,
1128 cairo_line_to (cr, 0.2, 3.5);
1129 cairo_curve_to (cr, 1.1, 3.5,
1132 cairo_curve_to (cr, 1.0, 3.9,
1135 cairo_curve_to (cr, 3.5, 3.1,
1147 gtk_theming_engine_render_option (GtkThemingEngine *engine,
1154 GtkStateFlags flags;
1155 GdkRGBA fg_color, bg_color;
1156 gint exterior_size, interior_size, pad, thickness, border_width;
1157 GtkBorderStyle border_style;
1159 GtkThemingBackground bg;
1161 _gtk_theming_background_init (&bg, engine,
1164 gtk_theming_engine_get_junction_sides (engine));
1166 if (_gtk_theming_background_has_background_image (&bg))
1168 _gtk_theming_background_render (&bg, cr);
1172 flags = gtk_theming_engine_get_state (engine);
1176 gtk_theming_engine_get_color (engine, flags, &fg_color);
1177 gtk_theming_engine_get_background_color (engine, flags, &bg_color);
1178 gtk_theming_engine_get_border (engine, flags, &border);
1179 border_style = _gtk_css_border_style_value_get
1180 (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
1182 exterior_size = MIN (width, height);
1183 border_width = MIN (MIN (border.top, border.bottom),
1184 MIN (border.left, border.right));
1186 if (exterior_size % 2 == 0) /* Ensure odd */
1189 x -= (1 + exterior_size - width) / 2;
1190 y -= (1 + exterior_size - height) / 2;
1192 if (border_style == GTK_BORDER_STYLE_SOLID)
1194 GdkRGBA border_color;
1196 cairo_set_line_width (cr, border_width);
1197 gtk_theming_engine_get_border_color (engine, flags, &border_color);
1199 cairo_new_sub_path (cr);
1201 x + exterior_size / 2.,
1202 y + exterior_size / 2.,
1203 (exterior_size - 1) / 2.,
1206 gdk_cairo_set_source_rgba (cr, &bg_color);
1207 cairo_fill_preserve (cr);
1209 gdk_cairo_set_source_rgba (cr, &border_color);
1213 gdk_cairo_set_source_rgba (cr, &fg_color);
1215 /* FIXME: thickness */
1218 if (flags & GTK_STATE_FLAG_INCONSISTENT)
1220 gint line_thickness;
1222 pad = thickness + MAX (1, (exterior_size - 2 * thickness) / 9);
1223 interior_size = MAX (1, exterior_size - 2 * pad);
1225 if (interior_size < 7)
1228 pad = MAX (0, (exterior_size - interior_size) / 2);
1231 line_thickness = MAX (1, (3 + interior_size * 2) / 7);
1233 cairo_rectangle (cr,
1235 y + pad + (interior_size - line_thickness) / 2.,
1240 if (flags & GTK_STATE_FLAG_ACTIVE)
1242 pad = thickness + MAX (1, 2 * (exterior_size - 2 * thickness) / 9);
1243 interior_size = MAX (1, exterior_size - 2 * pad);
1245 if (interior_size < 5)
1248 pad = MAX (0, (exterior_size - interior_size) / 2);
1251 cairo_new_sub_path (cr);
1253 x + pad + interior_size / 2.,
1254 y + pad + interior_size / 2.,
1264 add_path_arrow (cairo_t *cr,
1272 cairo_translate (cr, x + (size / 2), y + (size / 2));
1273 cairo_rotate (cr, angle);
1275 cairo_move_to (cr, 0, - (size / 4));
1276 cairo_line_to (cr, - (size / 2), (size / 4));
1277 cairo_line_to (cr, (size / 2), (size / 4));
1278 cairo_close_path (cr);
1284 gtk_theming_engine_render_arrow (GtkThemingEngine *engine,
1291 GtkStateFlags flags;
1296 flags = gtk_theming_engine_get_state (engine);
1297 gtk_theming_engine_get_color (engine, flags, &fg_color);
1299 if (flags & GTK_STATE_FLAG_INSENSITIVE)
1301 add_path_arrow (cr, angle, x + 1, y + 1, size);
1302 cairo_set_source_rgb (cr, 1, 1, 1);
1306 add_path_arrow (cr, angle, x, y, size);
1307 gdk_cairo_set_source_rgba (cr, &fg_color);
1314 add_path_line (cairo_t *cr,
1320 /* Adjust endpoints */
1334 cairo_move_to (cr, x1, y1);
1335 cairo_line_to (cr, x2, y2);
1339 color_shade (const GdkRGBA *color,
1341 GdkRGBA *color_return)
1345 _gtk_hsla_init_from_rgba (&hsla, color);
1346 _gtk_hsla_shade (&hsla, &hsla, factor);
1347 _gdk_rgba_init_from_hsla (color_return, &hsla);
1351 gtk_theming_engine_render_background (GtkThemingEngine *engine,
1358 GtkThemingBackground bg;
1360 _gtk_theming_background_init (&bg, engine,
1363 gtk_theming_engine_get_junction_sides (engine));
1365 _gtk_theming_background_render (&bg, cr);
1369 gtk_theming_engine_hide_border_sides (double border[4],
1370 GtkBorderStyle border_style[4],
1375 for (i = 0; i < 4; i++)
1377 if (hidden_side & (1 << i) ||
1378 border_style[i] == GTK_BORDER_STYLE_NONE ||
1379 border_style[i] == GTK_BORDER_STYLE_HIDDEN)
1385 render_frame_fill (cairo_t *cr,
1386 GtkRoundedBox *border_box,
1387 const double border_width[4],
1391 GtkRoundedBox padding_box;
1394 padding_box = *border_box;
1395 _gtk_rounded_box_shrink (&padding_box,
1396 border_width[GTK_CSS_TOP],
1397 border_width[GTK_CSS_RIGHT],
1398 border_width[GTK_CSS_BOTTOM],
1399 border_width[GTK_CSS_LEFT]);
1401 if (hidden_side == 0 &&
1402 gdk_rgba_equal (&colors[0], &colors[1]) &&
1403 gdk_rgba_equal (&colors[0], &colors[2]) &&
1404 gdk_rgba_equal (&colors[0], &colors[3]))
1406 gdk_cairo_set_source_rgba (cr, &colors[0]);
1408 _gtk_rounded_box_path (border_box, cr);
1409 _gtk_rounded_box_path (&padding_box, cr);
1414 for (i = 0; i < 4; i++)
1416 if (hidden_side & (1 << i))
1419 for (j = 0; j < 4; j++)
1421 if (hidden_side & (1 << j))
1425 (gdk_rgba_equal (&colors[i], &colors[j])))
1427 /* We were already painted when i == j */
1432 _gtk_rounded_box_path_top (border_box, &padding_box, cr);
1434 _gtk_rounded_box_path_right (border_box, &padding_box, cr);
1436 _gtk_rounded_box_path_bottom (border_box, &padding_box, cr);
1438 _gtk_rounded_box_path_left (border_box, &padding_box, cr);
1441 /* We were already painted when i == j */
1445 gdk_cairo_set_source_rgba (cr, &colors[i]);
1453 set_stroke_style (cairo_t *cr,
1455 GtkBorderStyle style,
1461 cairo_set_line_width (cr, line_width);
1463 if (style == GTK_BORDER_STYLE_DOTTED)
1465 n = round (0.5 * length / line_width);
1468 segments[1] = n ? length / n : 2;
1469 cairo_set_dash (cr, segments, G_N_ELEMENTS (segments), 0);
1471 cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
1472 cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
1476 n = length / line_width;
1477 /* Optimize the common case of an integer-sized rectangle
1478 * Again, we care about focus rectangles.
1480 if (n == nearbyint (n))
1487 n = round ((1. / 3) * n);
1489 segments[0] = n ? (1. / 3) * length / n : 1;
1490 segments[1] = 2 * segments[1];
1492 cairo_set_dash (cr, segments, G_N_ELEMENTS (segments), 0);
1494 cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
1495 cairo_set_line_join (cr, CAIRO_LINE_JOIN_MITER);
1500 render_frame_stroke (cairo_t *cr,
1501 GtkRoundedBox *border_box,
1502 const double border_width[4],
1505 GtkBorderStyle stroke_style)
1507 gboolean different_colors, different_borders;
1508 GtkRoundedBox stroke_box;
1511 different_colors = !gdk_rgba_equal (&colors[0], &colors[1]) ||
1512 !gdk_rgba_equal (&colors[0], &colors[2]) ||
1513 !gdk_rgba_equal (&colors[0], &colors[3]);
1514 different_borders = border_width[0] != border_width[1] ||
1515 border_width[0] != border_width[2] ||
1516 border_width[0] != border_width[3] ;
1518 stroke_box = *border_box;
1519 _gtk_rounded_box_shrink (&stroke_box,
1520 border_width[GTK_CSS_TOP] / 2.0,
1521 border_width[GTK_CSS_RIGHT] / 2.0,
1522 border_width[GTK_CSS_BOTTOM] / 2.0,
1523 border_width[GTK_CSS_LEFT] / 2.0);
1525 if (!different_colors && !different_borders && hidden_side == 0)
1530 * Mostly expected to trigger for focus rectangles */
1531 for (i = 0; i < 4; i++)
1533 length += _gtk_rounded_box_guess_length (&stroke_box, i);
1534 _gtk_rounded_box_path_side (&stroke_box, cr, i);
1537 gdk_cairo_set_source_rgba (cr, &colors[0]);
1538 set_stroke_style (cr, border_width[0], stroke_style, length);
1543 GtkRoundedBox padding_box;
1545 padding_box = *border_box;
1546 _gtk_rounded_box_path (&padding_box, cr);
1547 _gtk_rounded_box_shrink (&padding_box,
1548 border_width[GTK_CSS_TOP],
1549 border_width[GTK_CSS_RIGHT],
1550 border_width[GTK_CSS_BOTTOM],
1551 border_width[GTK_CSS_LEFT]);
1553 for (i = 0; i < 4; i++)
1555 if (hidden_side & (1 << i))
1561 _gtk_rounded_box_path_top (border_box, &padding_box, cr);
1563 _gtk_rounded_box_path_right (border_box, &padding_box, cr);
1565 _gtk_rounded_box_path_bottom (border_box, &padding_box, cr);
1567 _gtk_rounded_box_path_left (border_box, &padding_box, cr);
1570 _gtk_rounded_box_path_side (&stroke_box, cr, i);
1572 gdk_cairo_set_source_rgba (cr, &colors[i]);
1573 set_stroke_style (cr,
1576 _gtk_rounded_box_guess_length (&stroke_box, i));
1585 render_border (cairo_t *cr,
1586 GtkRoundedBox *border_box,
1587 const double border_width[4],
1590 GtkBorderStyle border_style[4])
1596 cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
1598 for (i = 0; i < 4; i++)
1600 if (hidden_side & (1 << i))
1603 switch (border_style[i])
1605 case GTK_BORDER_STYLE_NONE:
1606 case GTK_BORDER_STYLE_HIDDEN:
1607 case GTK_BORDER_STYLE_SOLID:
1609 case GTK_BORDER_STYLE_INSET:
1610 if (i == 1 || i == 2)
1611 color_shade (&colors[i], 1.8, &colors[i]);
1613 case GTK_BORDER_STYLE_OUTSET:
1614 if (i == 0 || i == 3)
1615 color_shade (&colors[i], 1.8, &colors[i]);
1617 case GTK_BORDER_STYLE_DOTTED:
1618 case GTK_BORDER_STYLE_DASHED:
1620 guint dont_draw = hidden_side;
1622 for (j = 0; j < 4; j++)
1624 if (border_style[j] == border_style[i])
1625 hidden_side |= (1 << j);
1627 dont_draw |= (1 << j);
1630 render_frame_stroke (cr, border_box, border_width, colors, dont_draw, border_style[i]);
1633 case GTK_BORDER_STYLE_DOUBLE:
1635 GtkRoundedBox other_box;
1636 double other_border[4];
1637 guint dont_draw = hidden_side;
1639 for (j = 0; j < 4; j++)
1641 if (border_style[j] == GTK_BORDER_STYLE_DOUBLE)
1642 hidden_side |= (1 << j);
1644 dont_draw |= (1 << j);
1646 other_border[i] = border_width[i] / 3;
1649 render_frame_fill (cr, border_box, other_border, colors, dont_draw);
1651 other_box = *border_box;
1652 _gtk_rounded_box_shrink (&other_box,
1653 2 * other_border[GTK_CSS_TOP],
1654 2 * other_border[GTK_CSS_RIGHT],
1655 2 * other_border[GTK_CSS_BOTTOM],
1656 2 * other_border[GTK_CSS_LEFT]);
1657 render_frame_fill (cr, &other_box, other_border, colors, dont_draw);
1660 case GTK_BORDER_STYLE_GROOVE:
1661 case GTK_BORDER_STYLE_RIDGE:
1663 GtkRoundedBox other_box;
1664 GdkRGBA other_colors[4];
1665 guint dont_draw = hidden_side;
1666 double other_border[4];
1668 for (j = 0; j < 4; j++)
1670 other_colors[j] = colors[j];
1671 if ((j == 0 || j == 3) ^ (border_style[j] == GTK_BORDER_STYLE_RIDGE))
1672 color_shade (&other_colors[j], 1.8, &other_colors[j]);
1674 color_shade (&colors[j], 1.8, &colors[j]);
1675 if (border_style[j] == GTK_BORDER_STYLE_GROOVE ||
1676 border_style[j] == GTK_BORDER_STYLE_RIDGE)
1677 hidden_side |= (1 << j);
1679 dont_draw |= (1 << j);
1680 other_border[i] = border_width[i] / 2;
1683 render_frame_fill (cr, border_box, other_border, colors, dont_draw);
1685 other_box = *border_box;
1686 _gtk_rounded_box_shrink (&other_box,
1687 other_border[GTK_CSS_TOP],
1688 other_border[GTK_CSS_RIGHT],
1689 other_border[GTK_CSS_BOTTOM],
1690 other_border[GTK_CSS_LEFT]);
1691 render_frame_fill (cr, &other_box, other_border, other_colors, dont_draw);
1695 g_assert_not_reached ();
1700 render_frame_fill (cr, border_box, border_width, colors, hidden_side);
1706 render_frame_internal (GtkThemingEngine *engine,
1713 GtkJunctionSides junction)
1715 GtkBorderImage border_image;
1716 GtkBorderStyle border_style[4];
1717 GtkRoundedBox border_box;
1718 double border_width[4];
1721 border_width[0] = _gtk_css_number_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_WIDTH), 100);
1722 border_width[1] = _gtk_css_number_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH), 100);
1723 border_width[2] = _gtk_css_number_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH), 100);
1724 border_width[3] = _gtk_css_number_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH), 100);
1726 border_style[0] = _gtk_css_border_style_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
1727 border_style[1] = _gtk_css_border_style_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_RIGHT_STYLE));
1728 border_style[2] = _gtk_css_border_style_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_BOTTOM_STYLE));
1729 border_style[3] = _gtk_css_border_style_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_LEFT_STYLE));
1731 gtk_theming_engine_hide_border_sides (border_width, border_style, hidden_side);
1733 if (_gtk_border_image_init (&border_image, engine))
1734 _gtk_border_image_render (&border_image, border_width, cr, x, y, width, height);
1737 colors[0] = *_gtk_css_rgba_value_get_rgba (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_COLOR));
1738 colors[1] = *_gtk_css_rgba_value_get_rgba (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_RIGHT_COLOR));
1739 colors[2] = *_gtk_css_rgba_value_get_rgba (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_BOTTOM_COLOR));
1740 colors[3] = *_gtk_css_rgba_value_get_rgba (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_LEFT_COLOR));
1742 _gtk_rounded_box_init_rect (&border_box, x, y, width, height);
1743 _gtk_rounded_box_apply_border_radius_for_engine (&border_box, engine, junction);
1745 render_border (cr, &border_box, border_width, hidden_side, colors, border_style);
1748 border_style[0] = _gtk_css_border_style_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_OUTLINE_STYLE));
1749 if (border_style[0] != GTK_BORDER_STYLE_NONE)
1753 border_style[1] = border_style[2] = border_style[3] = border_style[0];
1754 border_width[0] = _gtk_css_number_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_OUTLINE_WIDTH), 100);
1755 border_width[3] = border_width[2] = border_width[1] = border_width[0];
1756 colors[0] = *_gtk_css_rgba_value_get_rgba (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_OUTLINE_COLOR));
1757 colors[3] = colors[2] = colors[1] = colors[0];
1758 offset = _gtk_css_number_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_OUTLINE_OFFSET), 100);
1760 /* reinit box here - outlines don't have a border radius */
1761 _gtk_rounded_box_init_rect (&border_box, x, y, width, height);
1762 _gtk_rounded_box_shrink (&border_box,
1763 - border_width[GTK_CSS_TOP] - offset,
1764 - border_width[GTK_CSS_RIGHT] - offset,
1765 - border_width[GTK_CSS_LEFT] - offset,
1766 - border_width[GTK_CSS_BOTTOM] - offset);
1768 render_border (cr, &border_box, border_width, hidden_side, colors, border_style);
1773 gtk_theming_engine_render_frame (GtkThemingEngine *engine,
1780 GtkJunctionSides junction;
1782 junction = gtk_theming_engine_get_junction_sides (engine);
1784 render_frame_internal (engine, cr,
1785 x, y, width, height,
1790 gtk_theming_engine_render_expander (GtkThemingEngine *engine,
1797 GtkStateFlags flags;
1798 GdkRGBA outline_color, fg_color;
1799 double vertical_overshoot;
1802 double interp; /* interpolation factor for center position */
1803 double x_double_horz, y_double_horz;
1804 double x_double_vert, y_double_vert;
1805 double x_double, y_double;
1812 flags = gtk_theming_engine_get_state (engine);
1814 gtk_theming_engine_get_color (engine, flags, &fg_color);
1815 gtk_theming_engine_get_border_color (engine, flags, &outline_color);
1817 is_rtl = (gtk_theming_engine_get_state (engine) & GTK_STATE_FLAG_DIR_RTL);
1819 progress = (flags & GTK_STATE_FLAG_ACTIVE) ? 1 : 0;
1821 if (!gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_HORIZONTAL))
1824 angle = (G_PI) - ((G_PI / 2) * progress);
1826 angle = (G_PI / 2) * progress;
1831 angle = (G_PI / 2) + ((G_PI / 2) * progress);
1833 angle = (G_PI / 2) - ((G_PI / 2) * progress);
1838 /* Compute distance that the stroke extends beyonds the end
1839 * of the triangle we draw.
1841 vertical_overshoot = line_width / 2.0 * (1. / tan (G_PI / 8));
1843 /* For odd line widths, we end the vertical line of the triangle
1844 * at a half pixel, so we round differently.
1846 if (line_width % 2 == 1)
1847 vertical_overshoot = ceil (0.5 + vertical_overshoot) - 0.5;
1849 vertical_overshoot = ceil (vertical_overshoot);
1851 /* Adjust the size of the triangle we draw so that the entire stroke fits
1853 diameter = (gint) MAX (3, width - 2 * vertical_overshoot);
1855 /* If the line width is odd, we want the diameter to be even,
1856 * and vice versa, so force the sum to be odd. This relationship
1857 * makes the point of the triangle look right.
1859 diameter -= (1 - (diameter + line_width) % 2);
1861 radius = diameter / 2.;
1863 /* Adjust the center so that the stroke is properly aligned with
1864 * the pixel grid. The center adjustment is different for the
1865 * horizontal and vertical orientations. For intermediate positions
1866 * we interpolate between the two.
1868 x_double_vert = floor ((x + width / 2) - (radius + line_width) / 2.) + (radius + line_width) / 2.;
1869 y_double_vert = (y + height / 2) - 0.5;
1871 x_double_horz = (x + width / 2) - 0.5;
1872 y_double_horz = floor ((y + height / 2) - (radius + line_width) / 2.) + (radius + line_width) / 2.;
1874 x_double = x_double_vert * (1 - interp) + x_double_horz * interp;
1875 y_double = y_double_vert * (1 - interp) + y_double_horz * interp;
1877 cairo_translate (cr, x_double, y_double);
1878 cairo_rotate (cr, angle);
1880 cairo_move_to (cr, - radius / 2., - radius);
1881 cairo_line_to (cr, radius / 2., 0);
1882 cairo_line_to (cr, - radius / 2., radius);
1883 cairo_close_path (cr);
1885 cairo_set_line_width (cr, line_width);
1887 gdk_cairo_set_source_rgba (cr, &fg_color);
1889 cairo_fill_preserve (cr);
1891 gdk_cairo_set_source_rgba (cr, &outline_color);
1898 gtk_theming_engine_render_focus (GtkThemingEngine *engine,
1905 GtkStateFlags flags;
1911 flags = gtk_theming_engine_get_state (engine);
1913 gtk_theming_engine_get_color (engine, flags, &color);
1915 gtk_theming_engine_get_style (engine,
1916 "focus-line-width", &line_width,
1917 "focus-line-pattern", (gchar *) &dash_list,
1920 cairo_set_line_width (cr, (gdouble) line_width);
1924 gint n_dashes = strlen ((const gchar *) dash_list);
1925 gdouble *dashes = g_new (gdouble, n_dashes);
1926 gdouble total_length = 0;
1927 gdouble dash_offset;
1930 for (i = 0; i < n_dashes; i++)
1932 dashes[i] = dash_list[i];
1933 total_length += dash_list[i];
1936 /* The dash offset here aligns the pattern to integer pixels
1937 * by starting the dash at the right side of the left border
1938 * Negative dash offsets in cairo don't work
1939 * (https://bugs.freedesktop.org/show_bug.cgi?id=2729)
1941 dash_offset = - line_width / 2.;
1943 while (dash_offset < 0)
1944 dash_offset += total_length;
1946 cairo_set_dash (cr, dashes, n_dashes, dash_offset);
1950 cairo_rectangle (cr,
1951 x + line_width / 2.,
1952 y + line_width / 2.,
1954 height - line_width);
1956 gdk_cairo_set_source_rgba (cr, &color);
1965 gtk_theming_engine_render_line (GtkThemingEngine *engine,
1973 GtkStateFlags flags;
1975 flags = gtk_theming_engine_get_state (engine);
1978 gtk_theming_engine_get_color (engine, flags, &color);
1980 cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
1981 cairo_set_line_width (cr, 1);
1983 cairo_move_to (cr, x0 + 0.5, y0 + 0.5);
1984 cairo_line_to (cr, x1 + 0.5, y1 + 0.5);
1986 gdk_cairo_set_source_rgba (cr, &color);
1993 prepare_context_for_layout (cairo_t *cr,
1996 PangoLayout *layout)
1998 const PangoMatrix *matrix;
2000 matrix = pango_context_get_matrix (pango_layout_get_context (layout));
2002 cairo_move_to (cr, x, y);
2006 cairo_matrix_t cairo_matrix;
2008 cairo_matrix_init (&cairo_matrix,
2009 matrix->xx, matrix->yx,
2010 matrix->xy, matrix->yy,
2011 matrix->x0, matrix->y0);
2013 cairo_transform (cr, &cairo_matrix);
2018 gtk_theming_engine_render_layout (GtkThemingEngine *engine,
2022 PangoLayout *layout)
2025 GtkStateFlags flags;
2028 flags = gtk_theming_engine_get_state (engine);
2029 gtk_theming_engine_get_color (engine, flags, &fg_color);
2031 prepare_context_for_layout (cr, x, y, layout);
2033 _gtk_css_shadows_value_paint_layout (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_TEXT_SHADOW),
2036 gdk_cairo_set_source_rgba (cr, &fg_color);
2037 pango_cairo_show_layout (cr, layout);
2043 gtk_theming_engine_render_slider (GtkThemingEngine *engine,
2049 GtkOrientation orientation)
2051 gtk_theming_engine_render_background (engine, cr, x, y, width, height);
2052 gtk_theming_engine_render_frame (engine, cr, x, y, width, height);
2056 gtk_theming_engine_render_frame_gap (GtkThemingEngine *engine,
2062 GtkPositionType gap_side,
2066 GtkJunctionSides junction;
2067 GtkStateFlags state;
2069 GtkCssValue *corner[4];
2070 gdouble x0, y0, x1, y1, xc, yc, wc, hc;
2073 xc = yc = wc = hc = 0;
2074 state = gtk_theming_engine_get_state (engine);
2075 junction = gtk_theming_engine_get_junction_sides (engine);
2077 gtk_theming_engine_get_border (engine, state, &border);
2078 corner[GTK_CSS_TOP_LEFT] = _gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_LEFT_RADIUS);
2079 corner[GTK_CSS_TOP_RIGHT] = _gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_RIGHT_RADIUS);
2080 corner[GTK_CSS_BOTTOM_LEFT] = _gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_BOTTOM_LEFT_RADIUS);
2081 corner[GTK_CSS_BOTTOM_RIGHT] = _gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_BOTTOM_RIGHT_RADIUS);
2083 border_width = MIN (MIN (border.top, border.bottom),
2084 MIN (border.left, border.right));
2091 xc = x + xy0_gap + border_width;
2093 wc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2096 if (xy0_gap < _gtk_css_corner_value_get_x (corner[GTK_CSS_TOP_LEFT], width))
2097 junction |= GTK_JUNCTION_CORNER_TOPLEFT;
2099 if (xy1_gap > width - _gtk_css_corner_value_get_x (corner[GTK_CSS_TOP_RIGHT], width))
2100 junction |= GTK_JUNCTION_CORNER_TOPRIGHT;
2102 case GTK_POS_BOTTOM:
2103 xc = x + xy0_gap + border_width;
2104 yc = y + height - border_width;
2105 wc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2108 if (xy0_gap < _gtk_css_corner_value_get_x (corner[GTK_CSS_BOTTOM_LEFT], width))
2109 junction |= GTK_JUNCTION_CORNER_BOTTOMLEFT;
2111 if (xy1_gap > width - _gtk_css_corner_value_get_x (corner[GTK_CSS_BOTTOM_RIGHT], width))
2112 junction |= GTK_JUNCTION_CORNER_BOTTOMRIGHT;
2117 yc = y + xy0_gap + border_width;
2119 hc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2121 if (xy0_gap < _gtk_css_corner_value_get_y (corner[GTK_CSS_TOP_LEFT], height))
2122 junction |= GTK_JUNCTION_CORNER_TOPLEFT;
2124 if (xy1_gap > height - _gtk_css_corner_value_get_y (corner[GTK_CSS_BOTTOM_LEFT], height))
2125 junction |= GTK_JUNCTION_CORNER_BOTTOMLEFT;
2129 xc = x + width - border_width;
2130 yc = y + xy0_gap + border_width;
2132 hc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2134 if (xy0_gap < _gtk_css_corner_value_get_y (corner[GTK_CSS_TOP_RIGHT], height))
2135 junction |= GTK_JUNCTION_CORNER_TOPRIGHT;
2137 if (xy1_gap > height - _gtk_css_corner_value_get_y (corner[GTK_CSS_BOTTOM_RIGHT], height))
2138 junction |= GTK_JUNCTION_CORNER_BOTTOMRIGHT;
2143 cairo_clip_extents (cr, &x0, &y0, &x1, &y1);
2144 cairo_rectangle (cr, x0, y0, x1 - x0, yc - y0);
2145 cairo_rectangle (cr, x0, yc, xc - x0, hc);
2146 cairo_rectangle (cr, xc + wc, yc, x1 - (xc + wc), hc);
2147 cairo_rectangle (cr, x0, yc + hc, x1 - x0, y1 - (yc + hc));
2150 render_frame_internal (engine, cr,
2151 x, y, width, height,
2158 gtk_theming_engine_render_extension (GtkThemingEngine *engine,
2164 GtkPositionType gap_side)
2166 GtkThemingBackground bg;
2167 GtkJunctionSides junction = 0;
2168 guint hidden_side = 0;
2173 junction = GTK_JUNCTION_LEFT;
2174 hidden_side = (1 << GTK_CSS_LEFT);
2177 junction = GTK_JUNCTION_RIGHT;
2178 hidden_side = (1 << GTK_CSS_RIGHT);
2181 junction = GTK_JUNCTION_TOP;
2182 hidden_side = (1 << GTK_CSS_TOP);
2184 case GTK_POS_BOTTOM:
2185 junction = GTK_JUNCTION_BOTTOM;
2186 hidden_side = (1 << GTK_CSS_BOTTOM);
2190 _gtk_theming_background_init (&bg, engine,
2194 _gtk_theming_background_render (&bg, cr);
2196 render_frame_internal (engine, cr,
2197 x, y, width, height,
2198 hidden_side, junction);
2202 render_dot (cairo_t *cr,
2203 const GdkRGBA *lighter,
2204 const GdkRGBA *darker,
2209 size = CLAMP ((gint) size, 2, 3);
2213 gdk_cairo_set_source_rgba (cr, lighter);
2214 cairo_rectangle (cr, x, y, 1, 1);
2215 cairo_rectangle (cr, x + 1, y + 1, 1, 1);
2220 gdk_cairo_set_source_rgba (cr, lighter);
2221 cairo_rectangle (cr, x, y, 2, 1);
2222 cairo_rectangle (cr, x, y, 1, 2);
2225 gdk_cairo_set_source_rgba (cr, darker);
2226 cairo_rectangle (cr, x + 1, y + 1, 2, 1);
2227 cairo_rectangle (cr, x + 2, y, 1, 2);
2233 gtk_theming_engine_render_handle (GtkThemingEngine *engine,
2240 GtkStateFlags flags;
2241 GdkRGBA bg_color, lighter, darker;
2242 GtkJunctionSides sides;
2243 GtkThemingBackground bg;
2248 flags = gtk_theming_engine_get_state (engine);
2250 cairo_set_line_width (cr, 1.0);
2251 sides = gtk_theming_engine_get_junction_sides (engine);
2252 gtk_theming_engine_get_background_color (engine, flags, &bg_color);
2254 color_shade (&bg_color, 0.7, &darker);
2255 color_shade (&bg_color, 1.3, &lighter);
2257 _gtk_theming_background_init (&bg, engine, x, y, width, height, sides);
2258 has_image = _gtk_theming_background_has_background_image (&bg);
2259 _gtk_theming_background_render (&bg, cr);
2261 gtk_theming_engine_render_frame (engine, cr, x, y, width, height);
2263 if (gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_GRIP))
2265 /* reduce confusing values to a meaningful state */
2266 if ((sides & (GTK_JUNCTION_CORNER_TOPLEFT | GTK_JUNCTION_CORNER_BOTTOMRIGHT)) == (GTK_JUNCTION_CORNER_TOPLEFT | GTK_JUNCTION_CORNER_BOTTOMRIGHT))
2267 sides &= ~GTK_JUNCTION_CORNER_TOPLEFT;
2269 if ((sides & (GTK_JUNCTION_CORNER_TOPRIGHT | GTK_JUNCTION_CORNER_BOTTOMLEFT)) == (GTK_JUNCTION_CORNER_TOPRIGHT | GTK_JUNCTION_CORNER_BOTTOMLEFT))
2270 sides &= ~GTK_JUNCTION_CORNER_TOPRIGHT;
2273 sides = GTK_JUNCTION_CORNER_BOTTOMRIGHT;
2275 /* align drawing area to the connected side */
2276 if (sides == GTK_JUNCTION_LEFT)
2281 else if (sides == GTK_JUNCTION_CORNER_TOPLEFT)
2285 else if (height < width)
2288 else if (sides == GTK_JUNCTION_CORNER_BOTTOMLEFT)
2290 /* make it square, aligning to bottom left */
2293 y += (height - width);
2296 else if (height < width)
2299 else if (sides == GTK_JUNCTION_RIGHT)
2301 /* aligning to right */
2304 x += (width - height);
2308 else if (sides == GTK_JUNCTION_CORNER_TOPRIGHT)
2312 else if (height < width)
2314 x += (width - height);
2318 else if (sides == GTK_JUNCTION_CORNER_BOTTOMRIGHT)
2320 /* make it square, aligning to bottom right */
2323 y += (height - width);
2326 else if (height < width)
2328 x += (width - height);
2332 else if (sides == GTK_JUNCTION_TOP)
2337 else if (sides == GTK_JUNCTION_BOTTOM)
2339 /* align to bottom */
2342 y += (height - width);
2347 g_assert_not_reached ();
2349 if (sides == GTK_JUNCTION_LEFT ||
2350 sides == GTK_JUNCTION_RIGHT)
2356 while (xi < x + width)
2358 gdk_cairo_set_source_rgba (cr, &lighter);
2359 add_path_line (cr, x, y, x, y + height);
2363 gdk_cairo_set_source_rgba (cr, &darker);
2364 add_path_line (cr, xi, y, xi, y + height);
2369 else if (sides == GTK_JUNCTION_TOP ||
2370 sides == GTK_JUNCTION_BOTTOM)
2376 while (yi < y + height)
2378 gdk_cairo_set_source_rgba (cr, &lighter);
2379 add_path_line (cr, x, yi, x + width, yi);
2383 gdk_cairo_set_source_rgba (cr, &darker);
2384 add_path_line (cr, x, yi, x + width, yi);
2389 else if (sides == GTK_JUNCTION_CORNER_TOPLEFT)
2398 gdk_cairo_set_source_rgba (cr, &darker);
2399 add_path_line (cr, xi, y, x, yi);
2405 add_path_line (cr, xi, y, x, yi);
2411 gdk_cairo_set_source_rgba (cr, &lighter);
2412 add_path_line (cr, xi, y, x, yi);
2419 else if (sides == GTK_JUNCTION_CORNER_TOPRIGHT)
2426 while (xi < (x + width - 3))
2428 gdk_cairo_set_source_rgba (cr, &lighter);
2429 add_path_line (cr, xi, y, x + width, yi);
2435 gdk_cairo_set_source_rgba (cr, &darker);
2436 add_path_line (cr, xi, y, x + width, yi);
2442 add_path_line (cr, xi, y, x + width, yi);
2449 else if (sides == GTK_JUNCTION_CORNER_BOTTOMLEFT)
2458 gdk_cairo_set_source_rgba (cr, &darker);
2459 add_path_line (cr, x, yi, xi, y + height);
2465 add_path_line (cr, x, yi, xi, y + height);
2471 gdk_cairo_set_source_rgba (cr, &lighter);
2472 add_path_line (cr, x, yi, xi, y + height);
2479 else if (sides == GTK_JUNCTION_CORNER_BOTTOMRIGHT)
2486 while (xi < (x + width - 3))
2488 gdk_cairo_set_source_rgba (cr, &lighter);
2489 add_path_line (cr, xi, y + height, x + width, yi);
2495 gdk_cairo_set_source_rgba (cr, &darker);
2496 add_path_line (cr, xi, y + height, x + width, yi);
2502 add_path_line (cr, xi, y + height, x + width, yi);
2510 else if (gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_PANE_SEPARATOR))
2515 for (xx = x + width / 2 - 15; xx <= x + width / 2 + 15; xx += 5)
2516 render_dot (cr, &lighter, &darker, xx, y + height / 2 - 1, 3);
2518 for (yy = y + height / 2 - 15; yy <= y + height / 2 + 15; yy += 5)
2519 render_dot (cr, &lighter, &darker, x + width / 2 - 1, yy, 3);
2524 for (yy = y; yy < y + height; yy += 3)
2525 for (xx = x; xx < x + width; xx += 6)
2527 render_dot (cr, &lighter, &darker, xx, yy, 2);
2528 render_dot (cr, &lighter, &darker, xx + 3, yy + 1, 2);
2536 _gtk_theming_engine_paint_spinner (cairo_t *cr,
2539 const GdkRGBA *color)
2541 guint num_steps, step;
2548 step = (guint) (progress * num_steps);
2554 cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
2555 cairo_set_line_width (cr, 2.0);
2557 half = num_steps / 2;
2559 for (i = 0; i < num_steps; i++)
2561 gint inset = 0.7 * radius;
2563 /* transparency is a function of time and intial value */
2564 gdouble t = 1.0 - (gdouble) ((i + step) % num_steps) / num_steps;
2565 gdouble xscale = - sin (i * G_PI / half);
2566 gdouble yscale = - cos (i * G_PI / half);
2568 cairo_set_source_rgba (cr,
2575 (radius - inset) * xscale,
2576 (radius - inset) * yscale);
2588 render_spinner (GtkThemingEngine *engine,
2595 GtkStateFlags state;
2599 state = gtk_theming_engine_get_state (engine);
2600 radius = MIN (width / 2, height / 2);
2602 gtk_theming_engine_get_color (engine, state, &color);
2605 cairo_translate (cr, x + width / 2, y + height / 2);
2607 _gtk_css_shadows_value_paint_spinner (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_ICON_SHADOW),
2612 _gtk_theming_engine_paint_spinner (cr,
2621 gtk_theming_engine_render_activity (GtkThemingEngine *engine,
2628 GtkThemingBackground bg;
2630 _gtk_theming_background_init (&bg, engine, x, y, width, height, 0);
2632 if (gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_SPINNER) &&
2633 !_gtk_theming_background_has_background_image (&bg))
2635 render_spinner (engine, cr, x, y, width, height);
2639 _gtk_theming_background_render (&bg, cr);
2640 gtk_theming_engine_render_frame (engine, cr, x, y, width, height);
2645 scale_or_ref (GdkPixbuf *src,
2649 if (width == gdk_pixbuf_get_width (src) &&
2650 height == gdk_pixbuf_get_height (src))
2651 return g_object_ref (src);
2653 return gdk_pixbuf_scale_simple (src,
2655 GDK_INTERP_BILINEAR);
2659 lookup_icon_size (GtkThemingEngine *engine,
2665 GtkSettings *settings;
2667 screen = gtk_theming_engine_get_screen (engine);
2668 settings = gtk_settings_get_for_screen (screen);
2670 return gtk_icon_size_lookup_for_settings (settings, size, width, height);
2674 colorshift_source (cairo_t *cr,
2677 cairo_pattern_t *source;
2682 source = cairo_pattern_reference (cairo_get_source (cr));
2684 cairo_set_source_rgb (cr, shift, shift, shift);
2685 cairo_set_operator (cr, CAIRO_OPERATOR_COLOR_DODGE);
2687 cairo_mask (cr, source);
2689 cairo_pattern_destroy (source);
2694 gtk_theming_engine_render_icon_pixbuf (GtkThemingEngine *engine,
2695 const GtkIconSource *source,
2700 GdkPixbuf *base_pixbuf;
2701 GtkStateFlags state;
2705 cairo_surface_t *surface;
2707 base_pixbuf = gtk_icon_source_get_pixbuf (source);
2708 state = gtk_theming_engine_get_state (engine);
2710 g_return_val_if_fail (base_pixbuf != NULL, NULL);
2712 if (size != (GtkIconSize) -1 &&
2713 !lookup_icon_size (engine, size, &width, &height))
2715 g_warning (G_STRLOC ": invalid icon size '%d'", size);
2719 /* If the size was wildcarded, and we're allowed to scale, then scale; otherwise,
2722 if (size != (GtkIconSize) -1 &&
2723 gtk_icon_source_get_size_wildcarded (source))
2724 scaled = scale_or_ref (base_pixbuf, width, height);
2726 scaled = g_object_ref (base_pixbuf);
2728 /* If the state was wildcarded, then generate a state. */
2729 if (gtk_icon_source_get_state_wildcarded (source))
2731 if (state & GTK_STATE_FLAG_INSENSITIVE)
2733 surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
2734 gdk_pixbuf_get_width (scaled),
2735 gdk_pixbuf_get_height (scaled));
2736 cr = cairo_create (surface);
2737 gdk_cairo_set_source_pixbuf (cr, scaled, 0, 0);
2738 cairo_paint_with_alpha (cr, 0.5);
2742 g_object_unref (scaled);
2743 stated = gdk_pixbuf_get_from_surface (surface, 0, 0,
2744 cairo_image_surface_get_width (surface),
2745 cairo_image_surface_get_height (surface));
2746 cairo_surface_destroy (surface);
2748 else if (state & GTK_STATE_FLAG_PRELIGHT)
2750 surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
2751 gdk_pixbuf_get_width (scaled),
2752 gdk_pixbuf_get_height (scaled));
2754 cr = cairo_create (surface);
2755 gdk_cairo_set_source_pixbuf (cr, scaled, 0, 0);
2756 colorshift_source (cr, 0.10);
2760 g_object_unref (scaled);
2761 stated = gdk_pixbuf_get_from_surface (surface, 0, 0,
2762 cairo_image_surface_get_width (surface),
2763 cairo_image_surface_get_height (surface));
2764 cairo_surface_destroy (surface);
2776 gtk_theming_engine_render_icon (GtkThemingEngine *engine,
2784 gdk_cairo_set_source_pixbuf (cr, pixbuf, x, y);
2786 _gtk_css_shadows_value_paint_icon (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_ICON_SHADOW), cr);