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 "gtkmodulesprivate.h"
31 #include "gtkborderimageprivate.h"
33 #include "gtkshadowprivate.h"
34 #include "gtkcsstypesprivate.h"
35 #include "gtkthemingengineprivate.h"
36 #include "gtkroundedboxprivate.h"
37 #include "gtkthemingbackgroundprivate.h"
39 #include "fallback-c89.c"
42 * SECTION:gtkthemingengine
43 * @Short_description: Theming renderers
44 * @Title: GtkThemingEngine
45 * @See_also: #GtkStyleContext
47 * #GtkThemingEngine is the object used for rendering themed content
48 * in GTK+ widgets. Even though GTK+ has a default implementation,
49 * it can be overridden in CSS files by enforcing a #GtkThemingEngine
50 * object to be loaded as a module.
52 * In order to implement a theming engine, a #GtkThemingEngine subclass
53 * must be created, alongside the CSS file that will reference it, the
54 * theming engine would be created as an .so library, and installed in
55 * $(gtk-modules-dir)/theming-engines/.
57 * #GtkThemingEngine<!-- -->s have limited access to the object they are
58 * rendering, the #GtkThemingEngine API has read-only accessors to the
59 * style information contained in the rendered object's #GtkStyleContext.
67 struct GtkThemingEnginePrivate
69 GtkStyleContext *context;
73 #define GTK_THEMING_ENGINE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_THEMING_ENGINE, GtkThemingEnginePrivate))
75 static void gtk_theming_engine_finalize (GObject *object);
76 static void gtk_theming_engine_impl_set_property (GObject *object,
80 static void gtk_theming_engine_impl_get_property (GObject *object,
85 static void gtk_theming_engine_render_check (GtkThemingEngine *engine,
91 static void gtk_theming_engine_render_option (GtkThemingEngine *engine,
97 static void gtk_theming_engine_render_arrow (GtkThemingEngine *engine,
103 static void gtk_theming_engine_render_background (GtkThemingEngine *engine,
109 static void gtk_theming_engine_render_frame (GtkThemingEngine *engine,
115 static void gtk_theming_engine_render_expander (GtkThemingEngine *engine,
121 static void gtk_theming_engine_render_focus (GtkThemingEngine *engine,
127 static void gtk_theming_engine_render_layout (GtkThemingEngine *engine,
131 PangoLayout *layout);
132 static void gtk_theming_engine_render_line (GtkThemingEngine *engine,
138 static void gtk_theming_engine_render_slider (GtkThemingEngine *engine,
144 GtkOrientation orientation);
145 static void gtk_theming_engine_render_frame_gap (GtkThemingEngine *engine,
151 GtkPositionType gap_side,
154 static void gtk_theming_engine_render_extension (GtkThemingEngine *engine,
160 GtkPositionType gap_side);
161 static void gtk_theming_engine_render_handle (GtkThemingEngine *engine,
167 static void gtk_theming_engine_render_activity (GtkThemingEngine *engine,
173 static GdkPixbuf * gtk_theming_engine_render_icon_pixbuf (GtkThemingEngine *engine,
174 const GtkIconSource *source,
176 static void gtk_theming_engine_render_icon (GtkThemingEngine *engine,
182 G_DEFINE_TYPE (GtkThemingEngine, gtk_theming_engine, G_TYPE_OBJECT)
185 typedef struct GtkThemingModule GtkThemingModule;
186 typedef struct GtkThemingModuleClass GtkThemingModuleClass;
188 struct GtkThemingModule
190 GTypeModule parent_instance;
194 void (*init) (GTypeModule *module);
196 GtkThemingEngine * (*create_engine) (void);
199 struct GtkThemingModuleClass
201 GTypeModuleClass parent_class;
204 #define GTK_TYPE_THEMING_MODULE (gtk_theming_module_get_type ())
205 #define GTK_THEMING_MODULE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_THEMING_MODULE, GtkThemingModule))
206 #define GTK_IS_THEMING_MODULE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_THEMING_MODULE))
208 G_DEFINE_TYPE (GtkThemingModule, gtk_theming_module, G_TYPE_TYPE_MODULE);
211 gtk_theming_engine_class_init (GtkThemingEngineClass *klass)
213 GObjectClass *object_class = G_OBJECT_CLASS (klass);
215 object_class->finalize = gtk_theming_engine_finalize;
216 object_class->set_property = gtk_theming_engine_impl_set_property;
217 object_class->get_property = gtk_theming_engine_impl_get_property;
219 klass->render_icon = gtk_theming_engine_render_icon;
220 klass->render_check = gtk_theming_engine_render_check;
221 klass->render_option = gtk_theming_engine_render_option;
222 klass->render_arrow = gtk_theming_engine_render_arrow;
223 klass->render_background = gtk_theming_engine_render_background;
224 klass->render_frame = gtk_theming_engine_render_frame;
225 klass->render_expander = gtk_theming_engine_render_expander;
226 klass->render_focus = gtk_theming_engine_render_focus;
227 klass->render_layout = gtk_theming_engine_render_layout;
228 klass->render_line = gtk_theming_engine_render_line;
229 klass->render_slider = gtk_theming_engine_render_slider;
230 klass->render_frame_gap = gtk_theming_engine_render_frame_gap;
231 klass->render_extension = gtk_theming_engine_render_extension;
232 klass->render_handle = gtk_theming_engine_render_handle;
233 klass->render_activity = gtk_theming_engine_render_activity;
234 klass->render_icon_pixbuf = gtk_theming_engine_render_icon_pixbuf;
237 * GtkThemingEngine:name:
239 * The theming engine name, this name will be used when registering
240 * custom properties, for a theming engine named "Clearlooks" registering
241 * a "glossy" custom property, it could be referenced in the CSS file as
244 * -Clearlooks-glossy: true;
249 g_object_class_install_property (object_class,
251 g_param_spec_string ("name",
253 P_("Theming engine name"),
255 G_PARAM_CONSTRUCT_ONLY | GTK_PARAM_READWRITE));
257 g_type_class_add_private (object_class, sizeof (GtkThemingEnginePrivate));
261 gtk_theming_engine_init (GtkThemingEngine *engine)
263 engine->priv = GTK_THEMING_ENGINE_GET_PRIVATE (engine);
267 gtk_theming_engine_finalize (GObject *object)
269 GtkThemingEnginePrivate *priv;
271 priv = GTK_THEMING_ENGINE (object)->priv;
274 G_OBJECT_GET_CLASS (gtk_theming_engine_parent_class)->finalize (object);
278 gtk_theming_engine_impl_set_property (GObject *object,
283 GtkThemingEnginePrivate *priv;
285 priv = GTK_THEMING_ENGINE (object)->priv;
293 priv->name = g_value_dup_string (value);
296 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
302 gtk_theming_engine_impl_get_property (GObject *object,
307 GtkThemingEnginePrivate *priv;
309 priv = GTK_THEMING_ENGINE (object)->priv;
314 g_value_set_string (value, priv->name);
317 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
323 _gtk_theming_engine_set_context (GtkThemingEngine *engine,
324 GtkStyleContext *context)
326 GtkThemingEnginePrivate *priv;
328 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
329 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
332 priv->context = context;
336 _gtk_theming_engine_get_context (GtkThemingEngine *engine)
338 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
340 return engine->priv->context;
344 _gtk_theming_engine_peek_property (GtkThemingEngine *engine,
345 const char *property_name)
347 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
348 g_return_val_if_fail (property_name != NULL, NULL);
350 return _gtk_style_context_peek_property (engine->priv->context, property_name);
354 _gtk_theming_engine_get_number (GtkThemingEngine *engine,
355 const char *property_name,
356 double one_hundred_percent)
358 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0.0);
359 g_return_val_if_fail (property_name != NULL, 0.0);
361 return _gtk_style_context_get_number (engine->priv->context, property_name, one_hundred_percent);
365 * gtk_theming_engine_get_property:
366 * @engine: a #GtkThemingEngine
367 * @property: the property name
368 * @state: state to retrieve the value for
369 * @value: (out) (transfer full): return location for the property value,
370 * you must free this memory using g_value_unset() once you are
373 * Gets a property value as retrieved from the style settings that apply
374 * to the currently rendered element.
379 gtk_theming_engine_get_property (GtkThemingEngine *engine,
380 const gchar *property,
384 GtkThemingEnginePrivate *priv;
386 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
387 g_return_if_fail (property != NULL);
388 g_return_if_fail (value != NULL);
391 gtk_style_context_get_property (priv->context, property, state, value);
395 * gtk_theming_engine_get_valist:
396 * @engine: a #GtkThemingEngine
397 * @state: state to retrieve values for
398 * @args: va_list of property name/return location pairs, followed by %NULL
400 * Retrieves several style property values that apply to the currently
406 gtk_theming_engine_get_valist (GtkThemingEngine *engine,
410 GtkThemingEnginePrivate *priv;
412 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
415 gtk_style_context_get_valist (priv->context, state, args);
419 * gtk_theming_engine_get:
420 * @engine: a #GtkThemingEngine
421 * @state: state to retrieve values for
422 * @...: property name /return value pairs, followed by %NULL
424 * Retrieves several style property values that apply to the currently
430 gtk_theming_engine_get (GtkThemingEngine *engine,
434 GtkThemingEnginePrivate *priv;
437 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
441 va_start (args, state);
442 gtk_style_context_get_valist (priv->context, state, args);
447 * gtk_theming_engine_get_style_property:
448 * @engine: a #GtkThemingEngine
449 * @property_name: the name of the widget style property
450 * @value: Return location for the property value, free with
451 * g_value_unset() after use.
453 * Gets the value for a widget style property.
458 gtk_theming_engine_get_style_property (GtkThemingEngine *engine,
459 const gchar *property_name,
462 GtkThemingEnginePrivate *priv;
464 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
465 g_return_if_fail (property_name != NULL);
468 gtk_style_context_get_style_property (priv->context, property_name, value);
472 * gtk_theming_engine_get_style_valist:
473 * @engine: a #GtkThemingEngine
474 * @args: va_list of property name/return location pairs, followed by %NULL
476 * Retrieves several widget style properties from @engine according to the
477 * currently rendered content's style.
482 gtk_theming_engine_get_style_valist (GtkThemingEngine *engine,
485 GtkThemingEnginePrivate *priv;
487 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
490 gtk_style_context_get_style_valist (priv->context, args);
494 * gtk_theming_engine_get_style:
495 * @engine: a #GtkThemingEngine
496 * @...: property name /return value pairs, followed by %NULL
498 * Retrieves several widget style properties from @engine according
499 * to the currently rendered content's style.
504 gtk_theming_engine_get_style (GtkThemingEngine *engine,
507 GtkThemingEnginePrivate *priv;
510 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
514 va_start (args, engine);
515 gtk_style_context_get_style_valist (priv->context, args);
520 * gtk_theming_engine_lookup_color:
521 * @engine: a #GtkThemingEngine
522 * @color_name: color name to lookup
523 * @color: (out): Return location for the looked up color
525 * Looks up and resolves a color name in the current style's color map.
527 * Returns: %TRUE if @color_name was found and resolved, %FALSE otherwise
530 gtk_theming_engine_lookup_color (GtkThemingEngine *engine,
531 const gchar *color_name,
534 GtkThemingEnginePrivate *priv;
536 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
537 g_return_val_if_fail (color_name != NULL, FALSE);
540 return gtk_style_context_lookup_color (priv->context, color_name, color);
544 * gtk_theming_engine_get_state:
545 * @engine: a #GtkThemingEngine
547 * returns the state used when rendering.
549 * Returns: the state flags
554 gtk_theming_engine_get_state (GtkThemingEngine *engine)
556 GtkThemingEnginePrivate *priv;
558 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0);
561 return gtk_style_context_get_state (priv->context);
565 * gtk_theming_engine_state_is_running:
566 * @engine: a #GtkThemingEngine
567 * @state: a widget state
568 * @progress: (out): return location for the transition progress
570 * Returns %TRUE if there is a transition animation running for the
571 * current region (see gtk_style_context_push_animatable_region()).
573 * If @progress is not %NULL, the animation progress will be returned
574 * there, 0.0 means the state is closest to being %FALSE, while 1.0 means
575 * it's closest to being %TRUE. This means transition animations will
576 * run from 0 to 1 when @state is being set to %TRUE and from 1 to 0 when
577 * it's being set to %FALSE.
579 * Returns: %TRUE if there is a running transition animation for @state.
584 gtk_theming_engine_state_is_running (GtkThemingEngine *engine,
588 GtkThemingEnginePrivate *priv;
590 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
593 return gtk_style_context_state_is_running (priv->context, state, progress);
597 * gtk_theming_engine_get_path:
598 * @engine: a #GtkThemingEngine
600 * Returns the widget path used for style matching.
602 * Returns: (transfer none): A #GtkWidgetPath
606 const GtkWidgetPath *
607 gtk_theming_engine_get_path (GtkThemingEngine *engine)
609 GtkThemingEnginePrivate *priv;
611 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
614 return gtk_style_context_get_path (priv->context);
618 * gtk_theming_engine_has_class:
619 * @engine: a #GtkThemingEngine
620 * @style_class: class name to look up
622 * Returns %TRUE if the currently rendered contents have
623 * defined the given class name.
625 * Returns: %TRUE if @engine has @class_name defined
630 gtk_theming_engine_has_class (GtkThemingEngine *engine,
631 const gchar *style_class)
633 GtkThemingEnginePrivate *priv;
635 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
638 return gtk_style_context_has_class (priv->context, style_class);
642 * gtk_theming_engine_has_region:
643 * @engine: a #GtkThemingEngine
644 * @style_region: a region name
645 * @flags: (out) (allow-none): return location for region flags
647 * Returns %TRUE if the currently rendered contents have the
648 * region defined. If @flags_return is not %NULL, it is set
649 * to the flags affecting the region.
651 * Returns: %TRUE if region is defined
656 gtk_theming_engine_has_region (GtkThemingEngine *engine,
657 const gchar *style_region,
658 GtkRegionFlags *flags)
660 GtkThemingEnginePrivate *priv;
665 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
668 return gtk_style_context_has_region (priv->context, style_region, flags);
672 * gtk_theming_engine_get_direction:
673 * @engine: a #GtkThemingEngine
675 * Returns the widget direction used for rendering.
677 * Returns: the widget direction
682 gtk_theming_engine_get_direction (GtkThemingEngine *engine)
684 GtkThemingEnginePrivate *priv;
686 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), GTK_TEXT_DIR_LTR);
689 return gtk_style_context_get_direction (priv->context);
693 * gtk_theming_engine_get_junction_sides:
694 * @engine: a #GtkThemingEngine
696 * Returns the widget direction used for rendering.
698 * Returns: the widget direction
703 gtk_theming_engine_get_junction_sides (GtkThemingEngine *engine)
705 GtkThemingEnginePrivate *priv;
707 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0);
710 return gtk_style_context_get_junction_sides (priv->context);
714 * gtk_theming_engine_get_color:
715 * @engine: a #GtkThemingEngine
716 * @state: state to retrieve the color for
717 * @color: (out): return value for the foreground color
719 * Gets the foreground color for a given state.
724 gtk_theming_engine_get_color (GtkThemingEngine *engine,
728 GtkThemingEnginePrivate *priv;
730 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
733 gtk_style_context_get_color (priv->context, state, color);
737 * gtk_theming_engine_get_background_color:
738 * @engine: a #GtkThemingEngine
739 * @state: state to retrieve the color for
740 * @color: (out): return value for the background color
742 * Gets the background color for a given state.
747 gtk_theming_engine_get_background_color (GtkThemingEngine *engine,
751 GtkThemingEnginePrivate *priv;
753 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
756 gtk_style_context_get_background_color (priv->context, state, color);
760 * gtk_theming_engine_get_border_color:
761 * @engine: a #GtkThemingEngine
762 * @state: state to retrieve the color for
763 * @color: (out): return value for the border color
765 * Gets the border color for a given state.
770 gtk_theming_engine_get_border_color (GtkThemingEngine *engine,
774 GtkThemingEnginePrivate *priv;
776 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
779 gtk_style_context_get_border_color (priv->context, state, color);
783 * gtk_theming_engine_get_border:
784 * @engine: a #GtkthemingEngine
785 * @state: state to retrieve the border for
786 * @border: (out): return value for the border settings
788 * Gets the border for a given state as a #GtkBorder.
793 gtk_theming_engine_get_border (GtkThemingEngine *engine,
797 GtkThemingEnginePrivate *priv;
799 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
802 gtk_style_context_get_border (priv->context, state, border);
806 * gtk_theming_engine_get_padding:
807 * @engine: a #GtkthemingEngine
808 * @state: state to retrieve the padding for
809 * @padding: (out): return value for the padding settings
811 * Gets the padding for a given state as a #GtkBorder.
816 gtk_theming_engine_get_padding (GtkThemingEngine *engine,
820 GtkThemingEnginePrivate *priv;
822 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
825 gtk_style_context_get_padding (priv->context, state, padding);
829 * gtk_theming_engine_get_margin:
830 * @engine: a #GtkThemingEngine
831 * @state: state to retrieve the border for
832 * @margin: (out): return value for the margin settings
834 * Gets the margin for a given state as a #GtkBorder.
839 gtk_theming_engine_get_margin (GtkThemingEngine *engine,
843 GtkThemingEnginePrivate *priv;
845 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
848 gtk_style_context_get_margin (priv->context, state, margin);
852 * gtk_theming_engine_get_font:
853 * @engine: a #GtkThemingEngine
854 * @state: state to retrieve the font for
856 * Returns the font description for a given state.
858 * Returns: (transfer none): the #PangoFontDescription for the given
859 * state. This object is owned by GTK+ and should not be
864 const PangoFontDescription *
865 gtk_theming_engine_get_font (GtkThemingEngine *engine,
868 GtkThemingEnginePrivate *priv;
870 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
873 return gtk_style_context_get_font (priv->context, state);
876 /* GtkThemingModule */
879 gtk_theming_module_load (GTypeModule *type_module)
881 GtkThemingModule *theming_module;
883 gchar *name, *module_path;
885 theming_module = GTK_THEMING_MODULE (type_module);
886 name = theming_module->name;
887 module_path = _gtk_find_module (name, "theming-engines");
892 module = g_module_open (module_path, G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL);
893 g_free (module_path);
898 if (!g_module_symbol (module, "theme_init",
899 (gpointer *) &theming_module->init) ||
900 !g_module_symbol (module, "theme_exit",
901 (gpointer *) &theming_module->exit) ||
902 !g_module_symbol (module, "create_engine",
903 (gpointer *) &theming_module->create_engine))
905 g_module_close (module);
910 theming_module->module = module;
912 theming_module->init (G_TYPE_MODULE (theming_module));
918 gtk_theming_module_unload (GTypeModule *type_module)
920 GtkThemingModule *theming_module;
922 theming_module = GTK_THEMING_MODULE (type_module);
924 theming_module->exit ();
926 g_module_close (theming_module->module);
928 theming_module->module = NULL;
929 theming_module->init = NULL;
930 theming_module->exit = NULL;
931 theming_module->create_engine = NULL;
935 gtk_theming_module_class_init (GtkThemingModuleClass *klass)
937 GTypeModuleClass *module_class = G_TYPE_MODULE_CLASS (klass);
939 module_class->load = gtk_theming_module_load;
940 module_class->unload = gtk_theming_module_unload;
944 gtk_theming_module_init (GtkThemingModule *module)
949 * gtk_theming_engine_load:
950 * @name: Theme engine name to load
952 * Loads and initializes a theming engine module from the
953 * standard directories.
955 * Returns: (transfer none): A theming engine, or %NULL if
956 * the engine @name doesn't exist.
959 gtk_theming_engine_load (const gchar *name)
961 static GHashTable *engines = NULL;
962 static GtkThemingEngine *default_engine;
963 GtkThemingEngine *engine = NULL;
968 engines = g_hash_table_new (g_str_hash, g_str_equal);
970 engine = g_hash_table_lookup (engines, name);
974 GtkThemingModule *module;
976 module = g_object_new (GTK_TYPE_THEMING_MODULE, NULL);
977 g_type_module_set_name (G_TYPE_MODULE (module), name);
978 module->name = g_strdup (name);
980 if (module && g_type_module_use (G_TYPE_MODULE (module)))
982 engine = (module->create_engine) ();
985 g_hash_table_insert (engines, module->name, engine);
991 if (G_UNLIKELY (!default_engine))
992 default_engine = g_object_new (GTK_TYPE_THEMING_ENGINE, NULL);
994 engine = default_engine;
1001 * gtk_theming_engine_get_screen:
1002 * @engine: a #GtkThemingEngine
1004 * Returns the #GdkScreen to which @engine currently rendering to.
1006 * Returns: (transfer none): a #GdkScreen, or %NULL.
1009 gtk_theming_engine_get_screen (GtkThemingEngine *engine)
1011 GtkThemingEnginePrivate *priv;
1013 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
1015 priv = engine->priv;
1016 return gtk_style_context_get_screen (priv->context);
1019 /* Paint method implementations */
1021 gtk_theming_engine_render_check (GtkThemingEngine *engine,
1028 GdkRGBA fg_color, bg_color;
1029 GtkStateFlags flags;
1030 gint exterior_size, interior_size, thickness, pad;
1031 GtkBorderStyle border_style;
1034 GtkThemingBackground bg;
1036 _gtk_theming_background_init (&bg, engine,
1039 gtk_theming_engine_get_junction_sides (engine));
1041 if (_gtk_theming_background_has_background_image (&bg))
1043 _gtk_theming_background_render (&bg, cr);
1047 flags = gtk_theming_engine_get_state (engine);
1050 gtk_theming_engine_get_color (engine, flags, &fg_color);
1051 gtk_theming_engine_get_background_color (engine, flags, &bg_color);
1052 gtk_theming_engine_get_border (engine, flags, &border);
1054 gtk_theming_engine_get (engine, flags,
1055 "border-style", &border_style,
1058 border_width = MIN (MIN (border.top, border.bottom),
1059 MIN (border.left, border.right));
1060 exterior_size = MIN (width, height);
1062 if (exterior_size % 2 == 0) /* Ensure odd */
1065 /* FIXME: thickness */
1067 pad = thickness + MAX (1, (exterior_size - 2 * thickness) / 9);
1068 interior_size = MAX (1, exterior_size - 2 * pad);
1070 if (interior_size < 7)
1073 pad = MAX (0, (exterior_size - interior_size) / 2);
1076 x -= (1 + exterior_size - (gint) width) / 2;
1077 y -= (1 + exterior_size - (gint) height) / 2;
1079 if (border_style == GTK_BORDER_STYLE_SOLID)
1081 GdkRGBA border_color;
1083 cairo_set_line_width (cr, border_width);
1084 gtk_theming_engine_get_border_color (engine, flags, &border_color);
1086 cairo_rectangle (cr, x + 0.5, y + 0.5, exterior_size - 1, exterior_size - 1);
1087 gdk_cairo_set_source_rgba (cr, &bg_color);
1088 cairo_fill_preserve (cr);
1090 gdk_cairo_set_source_rgba (cr, &border_color);
1094 gdk_cairo_set_source_rgba (cr, &fg_color);
1096 if (flags & GTK_STATE_FLAG_INCONSISTENT)
1098 int line_thickness = MAX (1, (3 + interior_size * 2) / 7);
1100 cairo_rectangle (cr,
1102 y + pad + (1 + interior_size - line_thickness) / 2,
1112 running = gtk_theming_engine_state_is_running (engine, GTK_STATE_ACTIVE, &progress);
1114 if ((flags & GTK_STATE_FLAG_ACTIVE) || running)
1119 cairo_translate (cr,
1122 cairo_scale (cr, interior_size / 7., interior_size / 7.);
1124 cairo_rectangle (cr, 0, 0, 7 * progress, 7);
1127 cairo_move_to (cr, 7.0, 0.0);
1128 cairo_line_to (cr, 7.5, 1.0);
1129 cairo_curve_to (cr, 5.3, 2.0,
1132 cairo_curve_to (cr, 3.0, 5.7,
1135 cairo_line_to (cr, 0.2, 3.5);
1136 cairo_curve_to (cr, 1.1, 3.5,
1139 cairo_curve_to (cr, 1.0, 3.9,
1142 cairo_curve_to (cr, 3.5, 3.1,
1154 gtk_theming_engine_render_option (GtkThemingEngine *engine,
1161 GtkStateFlags flags;
1162 GdkRGBA fg_color, bg_color;
1163 gint exterior_size, interior_size, pad, thickness, border_width;
1164 GtkBorderStyle border_style;
1166 GtkThemingBackground bg;
1168 _gtk_theming_background_init (&bg, engine,
1171 gtk_theming_engine_get_junction_sides (engine));
1173 if (_gtk_theming_background_has_background_image (&bg))
1175 _gtk_theming_background_render (&bg, cr);
1179 flags = gtk_theming_engine_get_state (engine);
1183 gtk_theming_engine_get_color (engine, flags, &fg_color);
1184 gtk_theming_engine_get_background_color (engine, flags, &bg_color);
1185 gtk_theming_engine_get_border (engine, flags, &border);
1187 gtk_theming_engine_get (engine, flags,
1188 "border-style", &border_style,
1191 exterior_size = MIN (width, height);
1192 border_width = MIN (MIN (border.top, border.bottom),
1193 MIN (border.left, border.right));
1195 if (exterior_size % 2 == 0) /* Ensure odd */
1198 x -= (1 + exterior_size - width) / 2;
1199 y -= (1 + exterior_size - height) / 2;
1201 if (border_style == GTK_BORDER_STYLE_SOLID)
1203 GdkRGBA border_color;
1205 cairo_set_line_width (cr, border_width);
1206 gtk_theming_engine_get_border_color (engine, flags, &border_color);
1208 cairo_new_sub_path (cr);
1210 x + exterior_size / 2.,
1211 y + exterior_size / 2.,
1212 (exterior_size - 1) / 2.,
1215 gdk_cairo_set_source_rgba (cr, &bg_color);
1216 cairo_fill_preserve (cr);
1218 gdk_cairo_set_source_rgba (cr, &border_color);
1222 gdk_cairo_set_source_rgba (cr, &fg_color);
1224 /* FIXME: thickness */
1227 if (flags & GTK_STATE_FLAG_INCONSISTENT)
1229 gint line_thickness;
1231 pad = thickness + MAX (1, (exterior_size - 2 * thickness) / 9);
1232 interior_size = MAX (1, exterior_size - 2 * pad);
1234 if (interior_size < 7)
1237 pad = MAX (0, (exterior_size - interior_size) / 2);
1240 line_thickness = MAX (1, (3 + interior_size * 2) / 7);
1242 cairo_rectangle (cr,
1244 y + pad + (interior_size - line_thickness) / 2.,
1249 if (flags & GTK_STATE_FLAG_ACTIVE)
1251 pad = thickness + MAX (1, 2 * (exterior_size - 2 * thickness) / 9);
1252 interior_size = MAX (1, exterior_size - 2 * pad);
1254 if (interior_size < 5)
1257 pad = MAX (0, (exterior_size - interior_size) / 2);
1260 cairo_new_sub_path (cr);
1262 x + pad + interior_size / 2.,
1263 y + pad + interior_size / 2.,
1273 add_path_arrow (cairo_t *cr,
1281 cairo_translate (cr, x + (size / 2), y + (size / 2));
1282 cairo_rotate (cr, angle);
1284 cairo_move_to (cr, 0, - (size / 4));
1285 cairo_line_to (cr, - (size / 2), (size / 4));
1286 cairo_line_to (cr, (size / 2), (size / 4));
1287 cairo_close_path (cr);
1293 gtk_theming_engine_render_arrow (GtkThemingEngine *engine,
1300 GtkStateFlags flags;
1305 flags = gtk_theming_engine_get_state (engine);
1306 gtk_theming_engine_get_color (engine, flags, &fg_color);
1308 if (flags & GTK_STATE_FLAG_INSENSITIVE)
1310 add_path_arrow (cr, angle, x + 1, y + 1, size);
1311 cairo_set_source_rgb (cr, 1, 1, 1);
1315 add_path_arrow (cr, angle, x, y, size);
1316 gdk_cairo_set_source_rgba (cr, &fg_color);
1323 add_path_line (cairo_t *cr,
1329 /* Adjust endpoints */
1343 cairo_move_to (cr, x1, y1);
1344 cairo_line_to (cr, x2, y2);
1348 color_shade (const GdkRGBA *color,
1350 GdkRGBA *color_return)
1352 GtkSymbolicColor *literal, *shade;
1354 literal = gtk_symbolic_color_new_literal (color);
1355 shade = gtk_symbolic_color_new_shade (literal, factor);
1356 gtk_symbolic_color_unref (literal);
1358 gtk_symbolic_color_resolve (shade, NULL, color_return);
1359 gtk_symbolic_color_unref (shade);
1363 gtk_theming_engine_render_background (GtkThemingEngine *engine,
1370 GtkThemingBackground bg;
1372 _gtk_theming_background_init (&bg, engine,
1375 gtk_theming_engine_get_junction_sides (engine));
1377 _gtk_theming_background_render (&bg, cr);
1381 gtk_theming_engine_hide_border_sides (GtkBorder *border,
1384 if (hidden_side & (1 << GTK_CSS_TOP))
1386 if (hidden_side & (1 << GTK_CSS_RIGHT))
1388 if (hidden_side & (1 << GTK_CSS_BOTTOM))
1390 if (hidden_side & (1 << GTK_CSS_LEFT))
1395 render_frame_fill (cairo_t *cr,
1396 GtkRoundedBox *border_box,
1401 GtkRoundedBox padding_box;
1404 padding_box = *border_box;
1405 _gtk_rounded_box_shrink (&padding_box, border->top, border->right, border->bottom, border->left);
1407 if (hidden_side == 0 &&
1408 gdk_rgba_equal (&colors[0], &colors[1]) &&
1409 gdk_rgba_equal (&colors[0], &colors[2]) &&
1410 gdk_rgba_equal (&colors[0], &colors[3]))
1412 gdk_cairo_set_source_rgba (cr, &colors[0]);
1414 _gtk_rounded_box_path (border_box, cr);
1415 _gtk_rounded_box_path (&padding_box, cr);
1420 for (i = 0; i < 4; i++)
1422 if (hidden_side & (1 << i))
1425 for (j = 0; j < 4; j++)
1427 if (hidden_side & (1 << j))
1431 (gdk_rgba_equal (&colors[i], &colors[j])))
1433 /* We were already painted when i == j */
1438 _gtk_rounded_box_path_top (border_box, &padding_box, cr);
1440 _gtk_rounded_box_path_right (border_box, &padding_box, cr);
1442 _gtk_rounded_box_path_bottom (border_box, &padding_box, cr);
1444 _gtk_rounded_box_path_left (border_box, &padding_box, cr);
1447 /* We were already painted when i == j */
1451 gdk_cairo_set_source_rgba (cr, &colors[i]);
1459 set_stroke_style (cairo_t *cr,
1461 GtkBorderStyle style,
1467 cairo_set_line_width (cr, line_width);
1469 if (style == GTK_BORDER_STYLE_DOTTED)
1471 n = round (0.5 * length / line_width);
1474 segments[1] = n ? length / n : 2;
1475 cairo_set_dash (cr, segments, G_N_ELEMENTS (segments), 0);
1477 cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
1478 cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
1482 n = length / line_width;
1483 /* Optimize the common case of an integer-sized rectangle
1484 * Again, we care about focus rectangles.
1486 if (n == nearbyint (n))
1493 n = round ((1. / 3) * n);
1495 segments[0] = n ? (1. / 3) * length / n : 1;
1496 segments[1] = 2 * segments[1];
1498 cairo_set_dash (cr, segments, G_N_ELEMENTS (segments), 0);
1500 cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
1501 cairo_set_line_join (cr, CAIRO_LINE_JOIN_MITER);
1506 get_border_side (GtkBorder *border,
1514 return border->right;
1515 case GTK_CSS_BOTTOM:
1516 return border->bottom;
1518 return border->left;
1520 g_assert_not_reached ();
1526 render_frame_stroke (cairo_t *cr,
1527 GtkRoundedBox *border_box,
1531 GtkBorderStyle stroke_style)
1533 gboolean different_colors, different_borders;
1534 GtkRoundedBox stroke_box;
1537 different_colors = !gdk_rgba_equal (&colors[0], &colors[1]) ||
1538 !gdk_rgba_equal (&colors[0], &colors[2]) ||
1539 !gdk_rgba_equal (&colors[0], &colors[3]);
1540 different_borders = border->top != border->right ||
1541 border->top != border->bottom ||
1542 border->top != border->left;
1544 stroke_box = *border_box;
1545 _gtk_rounded_box_shrink (&stroke_box,
1547 border->right / 2.0,
1548 border->bottom / 2.0,
1549 border->left / 2.0);
1551 if (!different_colors && !different_borders && hidden_side == 0)
1556 * Mostly expected to trigger for focus rectangles */
1557 for (i = 0; i < 4; i++)
1559 length += _gtk_rounded_box_guess_length (&stroke_box, i);
1560 _gtk_rounded_box_path_side (&stroke_box, cr, i);
1563 gdk_cairo_set_source_rgba (cr, &colors[0]);
1564 set_stroke_style (cr, border->top, stroke_style, length);
1569 GtkRoundedBox padding_box;
1571 padding_box = *border_box;
1572 _gtk_rounded_box_path (&padding_box, cr);
1573 _gtk_rounded_box_shrink (&padding_box,
1579 for (i = 0; i < 4; i++)
1581 if (hidden_side & (1 << i))
1587 _gtk_rounded_box_path_top (border_box, &padding_box, cr);
1589 _gtk_rounded_box_path_right (border_box, &padding_box, cr);
1591 _gtk_rounded_box_path_bottom (border_box, &padding_box, cr);
1593 _gtk_rounded_box_path_left (border_box, &padding_box, cr);
1596 _gtk_rounded_box_path_side (&stroke_box, cr, i);
1598 gdk_cairo_set_source_rgba (cr, &colors[i]);
1599 set_stroke_style (cr,
1600 get_border_side (border, i),
1602 _gtk_rounded_box_guess_length (&stroke_box, i));
1611 render_border (cairo_t *cr,
1612 GtkRoundedBox *border_box,
1616 GtkBorderStyle border_style[4])
1622 cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
1624 for (i = 0; i < 4; i++)
1626 if (hidden_side & (1 << i))
1629 switch (border_style[i])
1631 case GTK_BORDER_STYLE_NONE:
1632 case GTK_BORDER_STYLE_HIDDEN:
1633 case GTK_BORDER_STYLE_SOLID:
1635 case GTK_BORDER_STYLE_INSET:
1636 if (i == 1 || i == 2)
1637 color_shade (&colors[i], 1.8, &colors[i]);
1639 case GTK_BORDER_STYLE_OUTSET:
1640 if (i == 0 || i == 3)
1641 color_shade (&colors[i], 1.8, &colors[i]);
1643 case GTK_BORDER_STYLE_DOTTED:
1644 case GTK_BORDER_STYLE_DASHED:
1646 guint dont_draw = hidden_side;
1648 for (j = 0; j < 4; j++)
1650 if (border_style[j] == border_style[i])
1651 hidden_side |= (1 << j);
1653 dont_draw |= (1 << j);
1656 render_frame_stroke (cr, border_box, border, colors, dont_draw, border_style[i]);
1659 case GTK_BORDER_STYLE_DOUBLE:
1661 GtkRoundedBox other_box;
1662 GtkBorder other_border;
1663 guint dont_draw = hidden_side;
1665 for (j = 0; j < 4; j++)
1667 if (border_style[j] == GTK_BORDER_STYLE_DOUBLE)
1668 hidden_side |= (1 << j);
1670 dont_draw |= (1 << j);
1672 other_border.top = (border->top + 2) / 3;
1673 other_border.right = (border->right + 2) / 3;
1674 other_border.bottom = (border->bottom + 2) / 3;
1675 other_border.left = (border->left + 2) / 3;
1677 render_frame_fill (cr, border_box, &other_border, colors, dont_draw);
1679 other_box = *border_box;
1680 _gtk_rounded_box_shrink (&other_box,
1681 border->top - other_border.top,
1682 border->right - other_border.right,
1683 border->bottom - other_border.bottom,
1684 border->left - other_border.left);
1685 render_frame_fill (cr, &other_box, &other_border, colors, dont_draw);
1687 case GTK_BORDER_STYLE_GROOVE:
1688 case GTK_BORDER_STYLE_RIDGE:
1690 GtkRoundedBox other_box;
1691 GdkRGBA other_colors[4];
1692 guint dont_draw = hidden_side;
1693 GtkBorder other_border;
1695 for (j = 0; j < 4; j++)
1697 other_colors[j] = colors[j];
1698 if ((j == 0 || j == 3) ^ (border_style[j] == GTK_BORDER_STYLE_RIDGE))
1699 color_shade (&other_colors[j], 1.8, &other_colors[j]);
1701 color_shade (&colors[j], 1.8, &colors[j]);
1702 if (border_style[j] == GTK_BORDER_STYLE_GROOVE ||
1703 border_style[j] == GTK_BORDER_STYLE_RIDGE)
1704 hidden_side |= (1 << j);
1706 dont_draw |= (1 << j);
1708 other_border.top = border->top / 2;
1709 other_border.right = border->right / 2;
1710 other_border.bottom = border->bottom / 2;
1711 other_border.left = border->left / 2;
1713 render_frame_fill (cr, border_box, &other_border, colors, dont_draw);
1715 other_box = *border_box;
1716 _gtk_rounded_box_shrink (&other_box,
1717 other_border.top, other_border.right,
1718 other_border.bottom, other_border.left);
1719 other_border.top = border->top - other_border.top;
1720 other_border.right = border->right - other_border.right;
1721 other_border.bottom = border->bottom - other_border.bottom;
1722 other_border.left = border->left - other_border.left;
1723 render_frame_fill (cr, &other_box, &other_border, other_colors, dont_draw);
1727 g_assert_not_reached ();
1732 render_frame_fill (cr, border_box, border, colors, hidden_side);
1738 render_frame_internal (GtkThemingEngine *engine,
1745 GtkJunctionSides junction)
1747 GtkBorderImage border_image;
1748 GtkStateFlags state;
1749 GtkBorderStyle border_style[4];
1750 GtkRoundedBox border_box;
1754 GdkRGBA *alloc_colors[4];
1758 state = gtk_theming_engine_get_state (engine);
1760 gtk_theming_engine_get_border (engine, state, &border);
1761 gtk_theming_engine_hide_border_sides (&border, hidden_side);
1763 if (_gtk_border_image_init (&border_image, engine))
1764 _gtk_border_image_render (&border_image, &border, cr, x, y, width, height);
1767 gtk_theming_engine_get (engine, state,
1768 "border-top-style", &border_style[0],
1769 "border-right-style", &border_style[1],
1770 "border-bottom-style", &border_style[2],
1771 "border-left-style", &border_style[3],
1772 "border-top-color", &alloc_colors[0],
1773 "border-right-color", &alloc_colors[1],
1774 "border-bottom-color", &alloc_colors[2],
1775 "border-left-color", &alloc_colors[3],
1778 running = gtk_theming_engine_state_is_running (engine, GTK_STATE_PRELIGHT, &progress);
1782 GtkStateFlags other_state;
1783 GdkRGBA *other_colors[4];
1785 if (state & GTK_STATE_FLAG_PRELIGHT)
1787 other_state = state & ~(GTK_STATE_FLAG_PRELIGHT);
1788 progress = 1 - progress;
1791 other_state = state | GTK_STATE_FLAG_PRELIGHT;
1793 gtk_theming_engine_get (engine, other_state,
1794 "border-top-color", &other_colors[0],
1795 "border-right-color", &other_colors[1],
1796 "border-bottom-color", &other_colors[2],
1797 "border-left-color", &other_colors[3],
1800 for (i = 0; i < 4; i++)
1802 colors[i].red = CLAMP (alloc_colors[i]->red + ((other_colors[i]->red - alloc_colors[i]->red) * progress), 0, 1);
1803 colors[i].green = CLAMP (alloc_colors[i]->green + ((other_colors[i]->green - alloc_colors[i]->green) * progress), 0, 1);
1804 colors[i].blue = CLAMP (alloc_colors[i]->blue + ((other_colors[i]->blue - alloc_colors[i]->blue) * progress), 0, 1);
1805 colors[i].alpha = CLAMP (alloc_colors[i]->alpha + ((other_colors[i]->alpha - alloc_colors[i]->alpha) * progress), 0, 1);
1806 gdk_rgba_free (other_colors[i]);
1807 gdk_rgba_free (alloc_colors[i]);
1812 for (i = 0; i < 4; i++)
1814 colors[i] = *alloc_colors[i];
1815 gdk_rgba_free (alloc_colors[i]);
1819 _gtk_rounded_box_init_rect (&border_box, x, y, width, height);
1820 _gtk_rounded_box_apply_border_radius_for_engine (&border_box, engine, state, junction);
1822 render_border (cr, &border_box, &border, hidden_side, colors, border_style);
1825 border_style[0] = g_value_get_enum (_gtk_theming_engine_peek_property (engine, "outline-style"));
1826 if (border_style[0] != GTK_BORDER_STYLE_NONE)
1830 border_style[1] = border_style[2] = border_style[3] = border_style[0];
1831 border.top = g_value_get_int (_gtk_theming_engine_peek_property (engine, "outline-width"));
1832 border.left = border.right = border.bottom = border.top;
1833 colors[0] = *(GdkRGBA *) g_value_get_boxed (_gtk_theming_engine_peek_property (engine, "outline-color"));
1834 colors[3] = colors[2] = colors[1] = colors[0];
1835 offset = g_value_get_int (_gtk_theming_engine_peek_property (engine, "outline-offset"));
1837 /* reinit box here - outlines don't have a border radius */
1838 _gtk_rounded_box_init_rect (&border_box, x, y, width, height);
1839 _gtk_rounded_box_shrink (&border_box,
1840 - border.top - offset,
1841 - border.right - offset,
1842 - border.left - offset,
1843 - border.bottom - offset);
1845 render_border (cr, &border_box, &border, hidden_side, colors, border_style);
1850 gtk_theming_engine_render_frame (GtkThemingEngine *engine,
1857 GtkJunctionSides junction;
1859 junction = gtk_theming_engine_get_junction_sides (engine);
1861 render_frame_internal (engine, cr,
1862 x, y, width, height,
1867 gtk_theming_engine_render_expander (GtkThemingEngine *engine,
1874 GtkStateFlags flags;
1875 GdkRGBA outline_color, fg_color;
1876 double vertical_overshoot;
1879 double interp; /* interpolation factor for center position */
1880 double x_double_horz, y_double_horz;
1881 double x_double_vert, y_double_vert;
1882 double x_double, y_double;
1885 gboolean running, is_rtl;
1889 flags = gtk_theming_engine_get_state (engine);
1891 gtk_theming_engine_get_color (engine, flags, &fg_color);
1892 gtk_theming_engine_get_border_color (engine, flags, &outline_color);
1894 running = gtk_theming_engine_state_is_running (engine, GTK_STATE_ACTIVE, &progress);
1895 is_rtl = (gtk_theming_engine_get_direction (engine) == GTK_TEXT_DIR_RTL);
1899 progress = (flags & GTK_STATE_FLAG_ACTIVE) ? 1 : 0;
1901 if (!gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_HORIZONTAL))
1904 angle = (G_PI) - ((G_PI / 2) * progress);
1906 angle = (G_PI / 2) * progress;
1911 angle = (G_PI / 2) + ((G_PI / 2) * progress);
1913 angle = (G_PI / 2) - ((G_PI / 2) * progress);
1918 /* Compute distance that the stroke extends beyonds the end
1919 * of the triangle we draw.
1921 vertical_overshoot = line_width / 2.0 * (1. / tan (G_PI / 8));
1923 /* For odd line widths, we end the vertical line of the triangle
1924 * at a half pixel, so we round differently.
1926 if (line_width % 2 == 1)
1927 vertical_overshoot = ceil (0.5 + vertical_overshoot) - 0.5;
1929 vertical_overshoot = ceil (vertical_overshoot);
1931 /* Adjust the size of the triangle we draw so that the entire stroke fits
1933 diameter = (gint) MAX (3, width - 2 * vertical_overshoot);
1935 /* If the line width is odd, we want the diameter to be even,
1936 * and vice versa, so force the sum to be odd. This relationship
1937 * makes the point of the triangle look right.
1939 diameter -= (1 - (diameter + line_width) % 2);
1941 radius = diameter / 2.;
1943 /* Adjust the center so that the stroke is properly aligned with
1944 * the pixel grid. The center adjustment is different for the
1945 * horizontal and vertical orientations. For intermediate positions
1946 * we interpolate between the two.
1948 x_double_vert = floor ((x + width / 2) - (radius + line_width) / 2.) + (radius + line_width) / 2.;
1949 y_double_vert = (y + height / 2) - 0.5;
1951 x_double_horz = (x + width / 2) - 0.5;
1952 y_double_horz = floor ((y + height / 2) - (radius + line_width) / 2.) + (radius + line_width) / 2.;
1954 x_double = x_double_vert * (1 - interp) + x_double_horz * interp;
1955 y_double = y_double_vert * (1 - interp) + y_double_horz * interp;
1957 cairo_translate (cr, x_double, y_double);
1958 cairo_rotate (cr, angle);
1960 cairo_move_to (cr, - radius / 2., - radius);
1961 cairo_line_to (cr, radius / 2., 0);
1962 cairo_line_to (cr, - radius / 2., radius);
1963 cairo_close_path (cr);
1965 cairo_set_line_width (cr, line_width);
1967 gdk_cairo_set_source_rgba (cr, &fg_color);
1969 cairo_fill_preserve (cr);
1971 gdk_cairo_set_source_rgba (cr, &outline_color);
1978 gtk_theming_engine_render_focus (GtkThemingEngine *engine,
1985 GtkStateFlags flags;
1991 flags = gtk_theming_engine_get_state (engine);
1993 gtk_theming_engine_get_color (engine, flags, &color);
1995 gtk_theming_engine_get_style (engine,
1996 "focus-line-width", &line_width,
1997 "focus-line-pattern", (gchar *) &dash_list,
2000 cairo_set_line_width (cr, (gdouble) line_width);
2004 gint n_dashes = strlen ((const gchar *) dash_list);
2005 gdouble *dashes = g_new (gdouble, n_dashes);
2006 gdouble total_length = 0;
2007 gdouble dash_offset;
2010 for (i = 0; i < n_dashes; i++)
2012 dashes[i] = dash_list[i];
2013 total_length += dash_list[i];
2016 /* The dash offset here aligns the pattern to integer pixels
2017 * by starting the dash at the right side of the left border
2018 * Negative dash offsets in cairo don't work
2019 * (https://bugs.freedesktop.org/show_bug.cgi?id=2729)
2021 dash_offset = - line_width / 2.;
2023 while (dash_offset < 0)
2024 dash_offset += total_length;
2026 cairo_set_dash (cr, dashes, n_dashes, dash_offset);
2030 cairo_rectangle (cr,
2031 x + line_width / 2.,
2032 y + line_width / 2.,
2034 height - line_width);
2036 gdk_cairo_set_source_rgba (cr, &color);
2045 gtk_theming_engine_render_line (GtkThemingEngine *engine,
2053 GtkStateFlags flags;
2055 flags = gtk_theming_engine_get_state (engine);
2058 gtk_theming_engine_get_color (engine, flags, &color);
2060 cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
2061 cairo_set_line_width (cr, 1);
2063 cairo_move_to (cr, x0 + 0.5, y0 + 0.5);
2064 cairo_line_to (cr, x1 + 0.5, y1 + 0.5);
2066 gdk_cairo_set_source_rgba (cr, &color);
2073 prepare_context_for_layout (cairo_t *cr,
2076 PangoLayout *layout)
2078 const PangoMatrix *matrix;
2080 matrix = pango_context_get_matrix (pango_layout_get_context (layout));
2082 cairo_move_to (cr, x, y);
2086 cairo_matrix_t cairo_matrix;
2088 cairo_matrix_init (&cairo_matrix,
2089 matrix->xx, matrix->yx,
2090 matrix->xy, matrix->yy,
2091 matrix->x0, matrix->y0);
2093 cairo_transform (cr, &cairo_matrix);
2098 gtk_theming_engine_render_layout (GtkThemingEngine *engine,
2102 PangoLayout *layout)
2105 GtkShadow *text_shadow = NULL;
2106 GtkStateFlags flags;
2111 flags = gtk_theming_engine_get_state (engine);
2112 gtk_theming_engine_get_color (engine, flags, &fg_color);
2114 running = gtk_theming_engine_state_is_running (engine, GTK_STATE_PRELIGHT, &progress);
2118 GtkStateFlags other_flags;
2121 if (flags & GTK_STATE_FLAG_PRELIGHT)
2123 other_flags = flags & ~(GTK_STATE_FLAG_PRELIGHT);
2124 progress = 1 - progress;
2127 other_flags = flags | GTK_STATE_FLAG_PRELIGHT;
2129 gtk_theming_engine_get_color (engine, other_flags, &other_fg);
2131 fg_color.red = CLAMP (fg_color.red + ((other_fg.red - fg_color.red) * progress), 0, 1);
2132 fg_color.green = CLAMP (fg_color.green + ((other_fg.green - fg_color.green) * progress), 0, 1);
2133 fg_color.blue = CLAMP (fg_color.blue + ((other_fg.blue - fg_color.blue) * progress), 0, 1);
2134 fg_color.alpha = CLAMP (fg_color.alpha + ((other_fg.alpha - fg_color.alpha) * progress), 0, 1);
2137 gtk_theming_engine_get (engine, flags,
2138 "text-shadow", &text_shadow,
2141 prepare_context_for_layout (cr, x, y, layout);
2143 if (text_shadow != NULL)
2145 _gtk_text_shadow_paint_layout (text_shadow, cr, layout);
2146 _gtk_shadow_unref (text_shadow);
2149 gdk_cairo_set_source_rgba (cr, &fg_color);
2150 pango_cairo_show_layout (cr, layout);
2156 gtk_theming_engine_render_slider (GtkThemingEngine *engine,
2162 GtkOrientation orientation)
2164 const GtkWidgetPath *path;
2167 path = gtk_theming_engine_get_path (engine);
2169 gtk_theming_engine_render_background (engine, cr, x, y, width, height);
2170 gtk_theming_engine_render_frame (engine, cr, x, y, width, height);
2172 /* FIXME: thickness */
2175 if (gtk_widget_path_is_type (path, GTK_TYPE_SCALE))
2177 if (orientation == GTK_ORIENTATION_VERTICAL)
2178 gtk_theming_engine_render_line (engine, cr,
2180 y + (gint) height / 2,
2181 x + width - thickness - 1,
2182 y + (gint) height / 2);
2184 gtk_theming_engine_render_line (engine, cr,
2185 x + (gint) width / 2,
2187 x + (gint) width / 2,
2188 y + height - thickness - 1);
2193 gtk_theming_engine_render_frame_gap (GtkThemingEngine *engine,
2199 GtkPositionType gap_side,
2203 GtkJunctionSides junction;
2204 GtkStateFlags state;
2206 GtkCssBorderCornerRadius *top_left_radius, *top_right_radius;
2207 GtkCssBorderCornerRadius *bottom_left_radius, *bottom_right_radius;
2208 gdouble x0, y0, x1, y1, xc, yc, wc, hc;
2211 xc = yc = wc = hc = 0;
2212 state = gtk_theming_engine_get_state (engine);
2213 junction = gtk_theming_engine_get_junction_sides (engine);
2215 gtk_theming_engine_get_border (engine, state, &border);
2216 gtk_theming_engine_get (engine, state,
2217 "border-top-left-radius", &top_left_radius,
2218 "border-top-right-radius", &top_right_radius,
2219 "border-bottom-right-radius", &bottom_right_radius,
2220 "border-bottom-left-radius", &bottom_left_radius,
2223 border_width = MIN (MIN (border.top, border.bottom),
2224 MIN (border.left, border.right));
2231 xc = x + xy0_gap + border_width;
2233 wc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2236 if (xy0_gap < _gtk_css_number_get (&top_left_radius->horizontal, width))
2237 junction |= GTK_JUNCTION_CORNER_TOPLEFT;
2239 if (xy1_gap > width - _gtk_css_number_get (&top_right_radius->horizontal, width))
2240 junction |= GTK_JUNCTION_CORNER_TOPRIGHT;
2242 case GTK_POS_BOTTOM:
2243 xc = x + xy0_gap + border_width;
2244 yc = y + height - border_width;
2245 wc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2248 if (xy0_gap < _gtk_css_number_get (&bottom_left_radius->horizontal, width))
2249 junction |= GTK_JUNCTION_CORNER_BOTTOMLEFT;
2251 if (xy1_gap > width - _gtk_css_number_get (&bottom_right_radius->horizontal, width))
2252 junction |= GTK_JUNCTION_CORNER_BOTTOMRIGHT;
2257 yc = y + xy0_gap + border_width;
2259 hc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2261 if (xy0_gap < _gtk_css_number_get (&top_left_radius->vertical, height))
2262 junction |= GTK_JUNCTION_CORNER_TOPLEFT;
2264 if (xy1_gap > height - _gtk_css_number_get (&bottom_left_radius->vertical, height))
2265 junction |= GTK_JUNCTION_CORNER_BOTTOMLEFT;
2269 xc = x + width - border_width;
2270 yc = y + xy0_gap + border_width;
2272 hc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2274 if (xy0_gap < _gtk_css_number_get (&top_right_radius->vertical, height))
2275 junction |= GTK_JUNCTION_CORNER_TOPRIGHT;
2277 if (xy1_gap > height - _gtk_css_number_get (&bottom_right_radius->vertical, height))
2278 junction |= GTK_JUNCTION_CORNER_BOTTOMRIGHT;
2283 cairo_clip_extents (cr, &x0, &y0, &x1, &y1);
2284 cairo_rectangle (cr, x0, y0, x1 - x0, yc - y0);
2285 cairo_rectangle (cr, x0, yc, xc - x0, hc);
2286 cairo_rectangle (cr, xc + wc, yc, x1 - (xc + wc), hc);
2287 cairo_rectangle (cr, x0, yc + hc, x1 - x0, y1 - (yc + hc));
2290 render_frame_internal (engine, cr,
2291 x, y, width, height,
2296 g_free (top_left_radius);
2297 g_free (top_right_radius);
2298 g_free (bottom_right_radius);
2299 g_free (bottom_left_radius);
2303 gtk_theming_engine_render_extension (GtkThemingEngine *engine,
2309 GtkPositionType gap_side)
2311 GtkThemingBackground bg;
2312 GtkJunctionSides junction = 0;
2313 guint hidden_side = 0;
2320 junction = GTK_JUNCTION_LEFT;
2321 hidden_side = (1 << GTK_CSS_LEFT);
2323 cairo_translate (cr, x + width, y);
2324 cairo_rotate (cr, G_PI / 2);
2327 junction = GTK_JUNCTION_RIGHT;
2328 hidden_side = (1 << GTK_CSS_RIGHT);
2330 cairo_translate (cr, x, y + height);
2331 cairo_rotate (cr, - G_PI / 2);
2334 junction = GTK_JUNCTION_TOP;
2335 hidden_side = (1 << GTK_CSS_TOP);
2337 cairo_translate (cr, x + width, y + height);
2338 cairo_rotate (cr, G_PI);
2340 case GTK_POS_BOTTOM:
2341 junction = GTK_JUNCTION_BOTTOM;
2342 hidden_side = (1 << GTK_CSS_BOTTOM);
2344 cairo_translate (cr, x, y);
2348 if (gap_side == GTK_POS_TOP ||
2349 gap_side == GTK_POS_BOTTOM)
2350 _gtk_theming_background_init (&bg, engine,
2353 GTK_JUNCTION_BOTTOM);
2355 _gtk_theming_background_init (&bg, engine,
2358 GTK_JUNCTION_BOTTOM);
2360 _gtk_theming_background_render (&bg, cr);
2366 render_frame_internal (engine, cr,
2367 x, y, width, height,
2368 hidden_side, junction);
2374 render_dot (cairo_t *cr,
2375 const GdkRGBA *lighter,
2376 const GdkRGBA *darker,
2381 size = CLAMP ((gint) size, 2, 3);
2385 gdk_cairo_set_source_rgba (cr, lighter);
2386 cairo_rectangle (cr, x, y, 1, 1);
2387 cairo_rectangle (cr, x + 1, y + 1, 1, 1);
2392 gdk_cairo_set_source_rgba (cr, lighter);
2393 cairo_rectangle (cr, x, y, 2, 1);
2394 cairo_rectangle (cr, x, y, 1, 2);
2397 gdk_cairo_set_source_rgba (cr, darker);
2398 cairo_rectangle (cr, x + 1, y + 1, 2, 1);
2399 cairo_rectangle (cr, x + 2, y, 1, 2);
2405 gtk_theming_engine_render_handle (GtkThemingEngine *engine,
2412 GtkStateFlags flags;
2413 GdkRGBA bg_color, lighter, darker;
2414 GtkJunctionSides sides;
2415 GtkThemingBackground bg;
2419 flags = gtk_theming_engine_get_state (engine);
2421 cairo_set_line_width (cr, 1.0);
2422 sides = gtk_theming_engine_get_junction_sides (engine);
2423 gtk_theming_engine_get_background_color (engine, flags, &bg_color);
2425 color_shade (&bg_color, 0.7, &darker);
2426 color_shade (&bg_color, 1.3, &lighter);
2428 _gtk_theming_background_init (&bg, engine, x, y, width, height, sides);
2429 _gtk_theming_background_render (&bg, cr);
2431 if (gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_GRIP))
2433 /* reduce confusing values to a meaningful state */
2434 if ((sides & (GTK_JUNCTION_CORNER_TOPLEFT | GTK_JUNCTION_CORNER_BOTTOMRIGHT)) == (GTK_JUNCTION_CORNER_TOPLEFT | GTK_JUNCTION_CORNER_BOTTOMRIGHT))
2435 sides &= ~GTK_JUNCTION_CORNER_TOPLEFT;
2437 if ((sides & (GTK_JUNCTION_CORNER_TOPRIGHT | GTK_JUNCTION_CORNER_BOTTOMLEFT)) == (GTK_JUNCTION_CORNER_TOPRIGHT | GTK_JUNCTION_CORNER_BOTTOMLEFT))
2438 sides &= ~GTK_JUNCTION_CORNER_TOPRIGHT;
2441 sides = GTK_JUNCTION_CORNER_BOTTOMRIGHT;
2443 /* align drawing area to the connected side */
2444 if (sides == GTK_JUNCTION_LEFT)
2449 else if (sides == GTK_JUNCTION_CORNER_TOPLEFT)
2453 else if (height < width)
2456 else if (sides == GTK_JUNCTION_CORNER_BOTTOMLEFT)
2458 /* make it square, aligning to bottom left */
2461 y += (height - width);
2464 else if (height < width)
2467 else if (sides == GTK_JUNCTION_RIGHT)
2469 /* aligning to right */
2472 x += (width - height);
2476 else if (sides == GTK_JUNCTION_CORNER_TOPRIGHT)
2480 else if (height < width)
2482 x += (width - height);
2486 else if (sides == GTK_JUNCTION_CORNER_BOTTOMRIGHT)
2488 /* make it square, aligning to bottom right */
2491 y += (height - width);
2494 else if (height < width)
2496 x += (width - height);
2500 else if (sides == GTK_JUNCTION_TOP)
2505 else if (sides == GTK_JUNCTION_BOTTOM)
2507 /* align to bottom */
2510 y += (height - width);
2515 g_assert_not_reached ();
2517 if (sides == GTK_JUNCTION_LEFT ||
2518 sides == GTK_JUNCTION_RIGHT)
2524 while (xi < x + width)
2526 gdk_cairo_set_source_rgba (cr, &lighter);
2527 add_path_line (cr, x, y, x, y + height);
2531 gdk_cairo_set_source_rgba (cr, &darker);
2532 add_path_line (cr, xi, y, xi, y + height);
2537 else if (sides == GTK_JUNCTION_TOP ||
2538 sides == GTK_JUNCTION_BOTTOM)
2544 while (yi < y + height)
2546 gdk_cairo_set_source_rgba (cr, &lighter);
2547 add_path_line (cr, x, yi, x + width, yi);
2551 gdk_cairo_set_source_rgba (cr, &darker);
2552 add_path_line (cr, x, yi, x + width, yi);
2557 else if (sides == GTK_JUNCTION_CORNER_TOPLEFT)
2566 gdk_cairo_set_source_rgba (cr, &darker);
2567 add_path_line (cr, xi, y, x, yi);
2573 add_path_line (cr, xi, y, x, yi);
2579 gdk_cairo_set_source_rgba (cr, &lighter);
2580 add_path_line (cr, xi, y, x, yi);
2587 else if (sides == GTK_JUNCTION_CORNER_TOPRIGHT)
2594 while (xi < (x + width - 3))
2596 gdk_cairo_set_source_rgba (cr, &lighter);
2597 add_path_line (cr, xi, y, x + width, yi);
2603 gdk_cairo_set_source_rgba (cr, &darker);
2604 add_path_line (cr, xi, y, x + width, yi);
2610 add_path_line (cr, xi, y, x + width, yi);
2617 else if (sides == GTK_JUNCTION_CORNER_BOTTOMLEFT)
2626 gdk_cairo_set_source_rgba (cr, &darker);
2627 add_path_line (cr, x, yi, xi, y + height);
2633 add_path_line (cr, x, yi, xi, y + height);
2639 gdk_cairo_set_source_rgba (cr, &lighter);
2640 add_path_line (cr, x, yi, xi, y + height);
2647 else if (sides == GTK_JUNCTION_CORNER_BOTTOMRIGHT)
2654 while (xi < (x + width - 3))
2656 gdk_cairo_set_source_rgba (cr, &lighter);
2657 add_path_line (cr, xi, y + height, x + width, yi);
2663 gdk_cairo_set_source_rgba (cr, &darker);
2664 add_path_line (cr, xi, y + height, x + width, yi);
2670 add_path_line (cr, xi, y + height, x + width, yi);
2678 else if (gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_PANE_SEPARATOR))
2681 for (xx = x + width / 2 - 15; xx <= x + width / 2 + 15; xx += 5)
2682 render_dot (cr, &lighter, &darker, xx, y + height / 2 - 1, 3);
2684 for (yy = y + height / 2 - 15; yy <= y + height / 2 + 15; yy += 5)
2685 render_dot (cr, &lighter, &darker, x + width / 2 - 1, yy, 3);
2689 for (yy = y; yy < y + height; yy += 3)
2690 for (xx = x; xx < x + width; xx += 6)
2692 render_dot (cr, &lighter, &darker, xx, yy, 2);
2693 render_dot (cr, &lighter, &darker, xx + 3, yy + 1, 2);
2701 _gtk_theming_engine_paint_spinner (cairo_t *cr,
2706 guint num_steps, step;
2713 step = (guint) (progress * num_steps);
2719 cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
2720 cairo_set_line_width (cr, 2.0);
2722 half = num_steps / 2;
2724 for (i = 0; i < num_steps; i++)
2726 gint inset = 0.7 * radius;
2728 /* transparency is a function of time and intial value */
2729 gdouble t = 1.0 - (gdouble) ((i + step) % num_steps) / num_steps;
2730 gdouble xscale = - sin (i * G_PI / half);
2731 gdouble yscale = - cos (i * G_PI / half);
2733 cairo_set_source_rgba (cr,
2740 (radius - inset) * xscale,
2741 (radius - inset) * yscale);
2753 render_spinner (GtkThemingEngine *engine,
2760 GtkStateFlags state;
2766 state = gtk_theming_engine_get_state (engine);
2768 if (!gtk_theming_engine_state_is_running (engine, GTK_STATE_ACTIVE, &progress))
2771 radius = MIN (width / 2, height / 2);
2773 gtk_theming_engine_get_color (engine, state, &color);
2774 gtk_theming_engine_get (engine, state,
2775 "icon-shadow", &shadow,
2779 cairo_translate (cr, x + width / 2, y + height / 2);
2783 _gtk_icon_shadow_paint_spinner (shadow, cr,
2786 _gtk_shadow_unref (shadow);
2789 _gtk_theming_engine_paint_spinner (cr,
2798 gtk_theming_engine_render_activity (GtkThemingEngine *engine,
2805 if (gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_SPINNER))
2807 render_spinner (engine, cr, x, y, width, height);
2811 gtk_theming_engine_render_background (engine, cr, x, y, width, height);
2812 gtk_theming_engine_render_frame (engine, cr, x, y, width, height);
2817 scale_or_ref (GdkPixbuf *src,
2821 if (width == gdk_pixbuf_get_width (src) &&
2822 height == gdk_pixbuf_get_height (src))
2823 return g_object_ref (src);
2825 return gdk_pixbuf_scale_simple (src,
2827 GDK_INTERP_BILINEAR);
2831 lookup_icon_size (GtkThemingEngine *engine,
2837 GtkSettings *settings;
2839 screen = gtk_theming_engine_get_screen (engine);
2840 settings = gtk_settings_get_for_screen (screen);
2842 return gtk_icon_size_lookup_for_settings (settings, size, width, height);
2846 colorshift_source (cairo_t *cr,
2849 cairo_pattern_t *source;
2854 source = cairo_pattern_reference (cairo_get_source (cr));
2856 cairo_set_source_rgb (cr, shift, shift, shift);
2857 cairo_set_operator (cr, CAIRO_OPERATOR_COLOR_DODGE);
2859 cairo_mask (cr, source);
2861 cairo_pattern_destroy (source);
2866 gtk_theming_engine_render_icon_pixbuf (GtkThemingEngine *engine,
2867 const GtkIconSource *source,
2872 GdkPixbuf *base_pixbuf;
2873 GtkStateFlags state;
2877 cairo_surface_t *surface;
2879 base_pixbuf = gtk_icon_source_get_pixbuf (source);
2880 state = gtk_theming_engine_get_state (engine);
2882 g_return_val_if_fail (base_pixbuf != NULL, NULL);
2884 if (size != (GtkIconSize) -1 &&
2885 !lookup_icon_size (engine, size, &width, &height))
2887 g_warning (G_STRLOC ": invalid icon size '%d'", size);
2891 /* If the size was wildcarded, and we're allowed to scale, then scale; otherwise,
2894 if (size != (GtkIconSize) -1 &&
2895 gtk_icon_source_get_size_wildcarded (source))
2896 scaled = scale_or_ref (base_pixbuf, width, height);
2898 scaled = g_object_ref (base_pixbuf);
2900 /* If the state was wildcarded, then generate a state. */
2901 if (gtk_icon_source_get_state_wildcarded (source))
2903 if (state & GTK_STATE_FLAG_INSENSITIVE)
2905 surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
2906 gdk_pixbuf_get_width (scaled),
2907 gdk_pixbuf_get_height (scaled));
2908 cr = cairo_create (surface);
2909 gdk_cairo_set_source_pixbuf (cr, scaled, 0, 0);
2910 cairo_paint_with_alpha (cr, 0.5);
2914 g_object_unref (scaled);
2915 stated = gdk_pixbuf_get_from_surface (surface, 0, 0,
2916 cairo_image_surface_get_width (surface),
2917 cairo_image_surface_get_height (surface));
2918 cairo_surface_destroy (surface);
2920 else if (state & GTK_STATE_FLAG_PRELIGHT)
2922 surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
2923 gdk_pixbuf_get_width (scaled),
2924 gdk_pixbuf_get_height (scaled));
2926 cr = cairo_create (surface);
2927 gdk_cairo_set_source_pixbuf (cr, scaled, 0, 0);
2928 colorshift_source (cr, 0.10);
2932 g_object_unref (scaled);
2933 stated = gdk_pixbuf_get_from_surface (surface, 0, 0,
2934 cairo_image_surface_get_width (surface),
2935 cairo_image_surface_get_height (surface));
2936 cairo_surface_destroy (surface);
2948 gtk_theming_engine_render_icon (GtkThemingEngine *engine,
2954 GtkStateFlags state;
2955 GtkShadow *icon_shadow;
2957 state = gtk_theming_engine_get_state (engine);
2961 gdk_cairo_set_source_pixbuf (cr, pixbuf, x, y);
2963 gtk_theming_engine_get (engine, state,
2964 "icon-shadow", &icon_shadow,
2967 if (icon_shadow != NULL)
2969 _gtk_icon_shadow_paint (icon_shadow, cr);
2970 _gtk_shadow_unref (icon_shadow);