1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
23 #include <gtk/gtkthemingengine.h>
24 #include <gtk/gtkstylecontext.h>
25 #include <gtk/gtkintl.h>
27 #include "gtkprivate.h"
28 #include "gtkmodulesprivate.h"
29 #include "gtkborderimageprivate.h"
31 #include "gtkcssarrayvalueprivate.h"
32 #include "gtkcsscornervalueprivate.h"
33 #include "gtkcssenumvalueprivate.h"
34 #include "gtkcssnumbervalueprivate.h"
35 #include "gtkcssrgbavalueprivate.h"
36 #include "gtkcssshadowsvalueprivate.h"
37 #include "gtkcsstypesprivate.h"
38 #include "gtkthemingengineprivate.h"
39 #include "gtkroundedboxprivate.h"
40 #include "gtkthemingbackgroundprivate.h"
42 #include "fallback-c89.c"
45 * SECTION:gtkthemingengine
46 * @Short_description: Theming renderers
47 * @Title: GtkThemingEngine
48 * @See_also: #GtkStyleContext
50 * #GtkThemingEngine is the object used for rendering themed content
51 * in GTK+ widgets. Even though GTK+ has a default implementation,
52 * it can be overridden in CSS files by enforcing a #GtkThemingEngine
53 * object to be loaded as a module.
55 * In order to implement a theming engine, a #GtkThemingEngine subclass
56 * must be created, alongside the CSS file that will reference it, the
57 * theming engine would be created as an .so library, and installed in
58 * $(gtk-modules-dir)/theming-engines/.
60 * #GtkThemingEngine<!-- -->s have limited access to the object they are
61 * rendering, the #GtkThemingEngine API has read-only accessors to the
62 * style information contained in the rendered object's #GtkStyleContext.
70 struct GtkThemingEnginePrivate
72 GtkStyleContext *context;
76 #define GTK_THEMING_ENGINE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_THEMING_ENGINE, GtkThemingEnginePrivate))
78 static void gtk_theming_engine_finalize (GObject *object);
79 static void gtk_theming_engine_impl_set_property (GObject *object,
83 static void gtk_theming_engine_impl_get_property (GObject *object,
88 static void gtk_theming_engine_render_check (GtkThemingEngine *engine,
94 static void gtk_theming_engine_render_option (GtkThemingEngine *engine,
100 static void gtk_theming_engine_render_arrow (GtkThemingEngine *engine,
106 static void gtk_theming_engine_render_background (GtkThemingEngine *engine,
112 static void gtk_theming_engine_render_frame (GtkThemingEngine *engine,
118 static void gtk_theming_engine_render_expander (GtkThemingEngine *engine,
124 static void gtk_theming_engine_render_focus (GtkThemingEngine *engine,
130 static void gtk_theming_engine_render_layout (GtkThemingEngine *engine,
134 PangoLayout *layout);
135 static void gtk_theming_engine_render_line (GtkThemingEngine *engine,
141 static void gtk_theming_engine_render_slider (GtkThemingEngine *engine,
147 GtkOrientation orientation);
148 static void gtk_theming_engine_render_frame_gap (GtkThemingEngine *engine,
154 GtkPositionType gap_side,
157 static void gtk_theming_engine_render_extension (GtkThemingEngine *engine,
163 GtkPositionType gap_side);
164 static void gtk_theming_engine_render_handle (GtkThemingEngine *engine,
170 static void gtk_theming_engine_render_activity (GtkThemingEngine *engine,
176 static GdkPixbuf * gtk_theming_engine_render_icon_pixbuf (GtkThemingEngine *engine,
177 const GtkIconSource *source,
179 static void gtk_theming_engine_render_icon (GtkThemingEngine *engine,
185 G_DEFINE_TYPE (GtkThemingEngine, gtk_theming_engine, G_TYPE_OBJECT)
188 typedef struct GtkThemingModule GtkThemingModule;
189 typedef struct GtkThemingModuleClass GtkThemingModuleClass;
191 struct GtkThemingModule
193 GTypeModule parent_instance;
197 void (*init) (GTypeModule *module);
199 GtkThemingEngine * (*create_engine) (void);
202 struct GtkThemingModuleClass
204 GTypeModuleClass parent_class;
207 #define GTK_TYPE_THEMING_MODULE (gtk_theming_module_get_type ())
208 #define GTK_THEMING_MODULE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_THEMING_MODULE, GtkThemingModule))
209 #define GTK_IS_THEMING_MODULE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_THEMING_MODULE))
211 G_DEFINE_TYPE (GtkThemingModule, gtk_theming_module, G_TYPE_TYPE_MODULE);
214 gtk_theming_engine_class_init (GtkThemingEngineClass *klass)
216 GObjectClass *object_class = G_OBJECT_CLASS (klass);
218 object_class->finalize = gtk_theming_engine_finalize;
219 object_class->set_property = gtk_theming_engine_impl_set_property;
220 object_class->get_property = gtk_theming_engine_impl_get_property;
222 klass->render_icon = gtk_theming_engine_render_icon;
223 klass->render_check = gtk_theming_engine_render_check;
224 klass->render_option = gtk_theming_engine_render_option;
225 klass->render_arrow = gtk_theming_engine_render_arrow;
226 klass->render_background = gtk_theming_engine_render_background;
227 klass->render_frame = gtk_theming_engine_render_frame;
228 klass->render_expander = gtk_theming_engine_render_expander;
229 klass->render_focus = gtk_theming_engine_render_focus;
230 klass->render_layout = gtk_theming_engine_render_layout;
231 klass->render_line = gtk_theming_engine_render_line;
232 klass->render_slider = gtk_theming_engine_render_slider;
233 klass->render_frame_gap = gtk_theming_engine_render_frame_gap;
234 klass->render_extension = gtk_theming_engine_render_extension;
235 klass->render_handle = gtk_theming_engine_render_handle;
236 klass->render_activity = gtk_theming_engine_render_activity;
237 klass->render_icon_pixbuf = gtk_theming_engine_render_icon_pixbuf;
240 * GtkThemingEngine:name:
242 * The theming engine name, this name will be used when registering
243 * custom properties, for a theming engine named "Clearlooks" registering
244 * a "glossy" custom property, it could be referenced in the CSS file as
247 * -Clearlooks-glossy: true;
252 g_object_class_install_property (object_class,
254 g_param_spec_string ("name",
256 P_("Theming engine name"),
258 G_PARAM_CONSTRUCT_ONLY | GTK_PARAM_READWRITE));
260 g_type_class_add_private (object_class, sizeof (GtkThemingEnginePrivate));
264 gtk_theming_engine_init (GtkThemingEngine *engine)
266 engine->priv = GTK_THEMING_ENGINE_GET_PRIVATE (engine);
270 gtk_theming_engine_finalize (GObject *object)
272 GtkThemingEnginePrivate *priv;
274 priv = GTK_THEMING_ENGINE (object)->priv;
277 G_OBJECT_GET_CLASS (gtk_theming_engine_parent_class)->finalize (object);
281 gtk_theming_engine_impl_set_property (GObject *object,
286 GtkThemingEnginePrivate *priv;
288 priv = GTK_THEMING_ENGINE (object)->priv;
296 priv->name = g_value_dup_string (value);
299 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
305 gtk_theming_engine_impl_get_property (GObject *object,
310 GtkThemingEnginePrivate *priv;
312 priv = GTK_THEMING_ENGINE (object)->priv;
317 g_value_set_string (value, priv->name);
320 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
326 _gtk_theming_engine_set_context (GtkThemingEngine *engine,
327 GtkStyleContext *context)
329 GtkThemingEnginePrivate *priv;
331 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
332 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
335 priv->context = context;
339 _gtk_theming_engine_get_context (GtkThemingEngine *engine)
341 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
343 return engine->priv->context;
347 _gtk_theming_engine_peek_property (GtkThemingEngine *engine,
350 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
352 return _gtk_style_context_peek_property (engine->priv->context, property_id);
356 _gtk_theming_engine_get_number (GtkThemingEngine *engine,
358 double one_hundred_percent)
360 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0.0);
362 return _gtk_style_context_get_number (engine->priv->context, property_id, one_hundred_percent);
366 * gtk_theming_engine_get_property:
367 * @engine: a #GtkThemingEngine
368 * @property: the property name
369 * @state: state to retrieve the value for
370 * @value: (out) (transfer full): return location for the property value,
371 * you must free this memory using g_value_unset() once you are
374 * Gets a property value as retrieved from the style settings that apply
375 * to the currently rendered element.
380 gtk_theming_engine_get_property (GtkThemingEngine *engine,
381 const gchar *property,
385 GtkThemingEnginePrivate *priv;
387 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
388 g_return_if_fail (property != NULL);
389 g_return_if_fail (value != NULL);
392 gtk_style_context_get_property (priv->context, property, state, value);
396 * gtk_theming_engine_get_valist:
397 * @engine: a #GtkThemingEngine
398 * @state: state to retrieve values for
399 * @args: va_list of property name/return location pairs, followed by %NULL
401 * Retrieves several style property values that apply to the currently
407 gtk_theming_engine_get_valist (GtkThemingEngine *engine,
411 GtkThemingEnginePrivate *priv;
413 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
416 gtk_style_context_get_valist (priv->context, state, args);
420 * gtk_theming_engine_get:
421 * @engine: a #GtkThemingEngine
422 * @state: state to retrieve values for
423 * @...: property name /return value pairs, followed by %NULL
425 * Retrieves several style property values that apply to the currently
431 gtk_theming_engine_get (GtkThemingEngine *engine,
435 GtkThemingEnginePrivate *priv;
438 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
442 va_start (args, state);
443 gtk_style_context_get_valist (priv->context, state, args);
448 * gtk_theming_engine_get_style_property:
449 * @engine: a #GtkThemingEngine
450 * @property_name: the name of the widget style property
451 * @value: Return location for the property value, free with
452 * g_value_unset() after use.
454 * Gets the value for a widget style property.
459 gtk_theming_engine_get_style_property (GtkThemingEngine *engine,
460 const gchar *property_name,
463 GtkThemingEnginePrivate *priv;
465 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
466 g_return_if_fail (property_name != NULL);
469 gtk_style_context_get_style_property (priv->context, property_name, value);
473 * gtk_theming_engine_get_style_valist:
474 * @engine: a #GtkThemingEngine
475 * @args: va_list of property name/return location pairs, followed by %NULL
477 * Retrieves several widget style properties from @engine according to the
478 * currently rendered content's style.
483 gtk_theming_engine_get_style_valist (GtkThemingEngine *engine,
486 GtkThemingEnginePrivate *priv;
488 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
491 gtk_style_context_get_style_valist (priv->context, args);
495 * gtk_theming_engine_get_style:
496 * @engine: a #GtkThemingEngine
497 * @...: property name /return value pairs, followed by %NULL
499 * Retrieves several widget style properties from @engine according
500 * to the currently rendered content's style.
505 gtk_theming_engine_get_style (GtkThemingEngine *engine,
508 GtkThemingEnginePrivate *priv;
511 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
515 va_start (args, engine);
516 gtk_style_context_get_style_valist (priv->context, args);
521 * gtk_theming_engine_lookup_color:
522 * @engine: a #GtkThemingEngine
523 * @color_name: color name to lookup
524 * @color: (out): Return location for the looked up color
526 * Looks up and resolves a color name in the current style's color map.
528 * Returns: %TRUE if @color_name was found and resolved, %FALSE otherwise
531 gtk_theming_engine_lookup_color (GtkThemingEngine *engine,
532 const gchar *color_name,
535 GtkThemingEnginePrivate *priv;
537 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
538 g_return_val_if_fail (color_name != NULL, FALSE);
541 return gtk_style_context_lookup_color (priv->context, color_name, color);
545 * gtk_theming_engine_get_state:
546 * @engine: a #GtkThemingEngine
548 * returns the state used when rendering.
550 * Returns: the state flags
555 gtk_theming_engine_get_state (GtkThemingEngine *engine)
557 GtkThemingEnginePrivate *priv;
559 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0);
562 return gtk_style_context_get_state (priv->context);
566 * gtk_theming_engine_state_is_running:
567 * @engine: a #GtkThemingEngine
568 * @state: a widget state
569 * @progress: (out): return location for the transition progress
571 * Returns %TRUE if there is a transition animation running for the
572 * current region (see gtk_style_context_push_animatable_region()).
574 * If @progress is not %NULL, the animation progress will be returned
575 * there, 0.0 means the state is closest to being %FALSE, while 1.0 means
576 * it's closest to being %TRUE. This means transition animations will
577 * run from 0 to 1 when @state is being set to %TRUE and from 1 to 0 when
578 * it's being set to %FALSE.
580 * Returns: %TRUE if there is a running transition animation for @state.
584 * Deprecated: 3.6: Always returns %FALSE
587 gtk_theming_engine_state_is_running (GtkThemingEngine *engine,
591 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
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);
1053 border_style = _gtk_css_border_style_value_get
1054 (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
1056 border_width = MIN (MIN (border.top, border.bottom),
1057 MIN (border.left, border.right));
1058 exterior_size = MIN (width, height);
1060 if (exterior_size % 2 == 0) /* Ensure odd */
1063 /* FIXME: thickness */
1065 pad = thickness + MAX (1, (exterior_size - 2 * thickness) / 9);
1066 interior_size = MAX (1, exterior_size - 2 * pad);
1068 if (interior_size < 7)
1071 pad = MAX (0, (exterior_size - interior_size) / 2);
1074 x -= (1 + exterior_size - (gint) width) / 2;
1075 y -= (1 + exterior_size - (gint) height) / 2;
1077 if (border_style == GTK_BORDER_STYLE_SOLID)
1079 GdkRGBA border_color;
1081 cairo_set_line_width (cr, border_width);
1082 gtk_theming_engine_get_border_color (engine, flags, &border_color);
1084 cairo_rectangle (cr, x + 0.5, y + 0.5, exterior_size - 1, exterior_size - 1);
1085 gdk_cairo_set_source_rgba (cr, &bg_color);
1086 cairo_fill_preserve (cr);
1088 gdk_cairo_set_source_rgba (cr, &border_color);
1092 gdk_cairo_set_source_rgba (cr, &fg_color);
1094 if (flags & GTK_STATE_FLAG_INCONSISTENT)
1096 int line_thickness = MAX (1, (3 + interior_size * 2) / 7);
1098 cairo_rectangle (cr,
1100 y + pad + (1 + interior_size - line_thickness) / 2,
1107 if (flags & GTK_STATE_FLAG_ACTIVE)
1109 cairo_translate (cr,
1112 cairo_scale (cr, interior_size / 7., interior_size / 7.);
1114 cairo_rectangle (cr, 0, 0, 7, 7);
1117 cairo_move_to (cr, 7.0, 0.0);
1118 cairo_line_to (cr, 7.5, 1.0);
1119 cairo_curve_to (cr, 5.3, 2.0,
1122 cairo_curve_to (cr, 3.0, 5.7,
1125 cairo_line_to (cr, 0.2, 3.5);
1126 cairo_curve_to (cr, 1.1, 3.5,
1129 cairo_curve_to (cr, 1.0, 3.9,
1132 cairo_curve_to (cr, 3.5, 3.1,
1144 gtk_theming_engine_render_option (GtkThemingEngine *engine,
1151 GtkStateFlags flags;
1152 GdkRGBA fg_color, bg_color;
1153 gint exterior_size, interior_size, pad, thickness, border_width;
1154 GtkBorderStyle border_style;
1156 GtkThemingBackground bg;
1158 _gtk_theming_background_init (&bg, engine,
1161 gtk_theming_engine_get_junction_sides (engine));
1163 if (_gtk_theming_background_has_background_image (&bg))
1165 _gtk_theming_background_render (&bg, cr);
1169 flags = gtk_theming_engine_get_state (engine);
1173 gtk_theming_engine_get_color (engine, flags, &fg_color);
1174 gtk_theming_engine_get_background_color (engine, flags, &bg_color);
1175 gtk_theming_engine_get_border (engine, flags, &border);
1176 border_style = _gtk_css_border_style_value_get
1177 (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
1179 exterior_size = MIN (width, height);
1180 border_width = MIN (MIN (border.top, border.bottom),
1181 MIN (border.left, border.right));
1183 if (exterior_size % 2 == 0) /* Ensure odd */
1186 x -= (1 + exterior_size - width) / 2;
1187 y -= (1 + exterior_size - height) / 2;
1189 if (border_style == GTK_BORDER_STYLE_SOLID)
1191 GdkRGBA border_color;
1193 cairo_set_line_width (cr, border_width);
1194 gtk_theming_engine_get_border_color (engine, flags, &border_color);
1196 cairo_new_sub_path (cr);
1198 x + exterior_size / 2.,
1199 y + exterior_size / 2.,
1200 (exterior_size - 1) / 2.,
1203 gdk_cairo_set_source_rgba (cr, &bg_color);
1204 cairo_fill_preserve (cr);
1206 gdk_cairo_set_source_rgba (cr, &border_color);
1210 gdk_cairo_set_source_rgba (cr, &fg_color);
1212 /* FIXME: thickness */
1215 if (flags & GTK_STATE_FLAG_INCONSISTENT)
1217 gint line_thickness;
1219 pad = thickness + MAX (1, (exterior_size - 2 * thickness) / 9);
1220 interior_size = MAX (1, exterior_size - 2 * pad);
1222 if (interior_size < 7)
1225 pad = MAX (0, (exterior_size - interior_size) / 2);
1228 line_thickness = MAX (1, (3 + interior_size * 2) / 7);
1230 cairo_rectangle (cr,
1232 y + pad + (interior_size - line_thickness) / 2.,
1237 if (flags & GTK_STATE_FLAG_ACTIVE)
1239 pad = thickness + MAX (1, 2 * (exterior_size - 2 * thickness) / 9);
1240 interior_size = MAX (1, exterior_size - 2 * pad);
1242 if (interior_size < 5)
1245 pad = MAX (0, (exterior_size - interior_size) / 2);
1248 cairo_new_sub_path (cr);
1250 x + pad + interior_size / 2.,
1251 y + pad + interior_size / 2.,
1261 add_path_arrow (cairo_t *cr,
1269 cairo_translate (cr, x + (size / 2), y + (size / 2));
1270 cairo_rotate (cr, angle);
1272 cairo_move_to (cr, 0, - (size / 4));
1273 cairo_line_to (cr, - (size / 2), (size / 4));
1274 cairo_line_to (cr, (size / 2), (size / 4));
1275 cairo_close_path (cr);
1281 gtk_theming_engine_render_arrow (GtkThemingEngine *engine,
1288 GtkStateFlags flags;
1293 flags = gtk_theming_engine_get_state (engine);
1294 gtk_theming_engine_get_color (engine, flags, &fg_color);
1296 if (flags & GTK_STATE_FLAG_INSENSITIVE)
1298 add_path_arrow (cr, angle, x + 1, y + 1, size);
1299 cairo_set_source_rgb (cr, 1, 1, 1);
1303 add_path_arrow (cr, angle, x, y, size);
1304 gdk_cairo_set_source_rgba (cr, &fg_color);
1311 add_path_line (cairo_t *cr,
1317 /* Adjust endpoints */
1331 cairo_move_to (cr, x1, y1);
1332 cairo_line_to (cr, x2, y2);
1336 color_shade (const GdkRGBA *color,
1338 GdkRGBA *color_return)
1340 GtkSymbolicColor *literal, *shade;
1342 literal = gtk_symbolic_color_new_literal (color);
1343 shade = gtk_symbolic_color_new_shade (literal, factor);
1344 gtk_symbolic_color_unref (literal);
1346 gtk_symbolic_color_resolve (shade, NULL, color_return);
1347 gtk_symbolic_color_unref (shade);
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 (GtkBorder *border,
1372 if (hidden_side & (1 << GTK_CSS_TOP))
1374 if (hidden_side & (1 << GTK_CSS_RIGHT))
1376 if (hidden_side & (1 << GTK_CSS_BOTTOM))
1378 if (hidden_side & (1 << GTK_CSS_LEFT))
1383 render_frame_fill (cairo_t *cr,
1384 GtkRoundedBox *border_box,
1389 GtkRoundedBox padding_box;
1392 padding_box = *border_box;
1393 _gtk_rounded_box_shrink (&padding_box, border->top, border->right, border->bottom, border->left);
1395 if (hidden_side == 0 &&
1396 gdk_rgba_equal (&colors[0], &colors[1]) &&
1397 gdk_rgba_equal (&colors[0], &colors[2]) &&
1398 gdk_rgba_equal (&colors[0], &colors[3]))
1400 gdk_cairo_set_source_rgba (cr, &colors[0]);
1402 _gtk_rounded_box_path (border_box, cr);
1403 _gtk_rounded_box_path (&padding_box, cr);
1408 for (i = 0; i < 4; i++)
1410 if (hidden_side & (1 << i))
1413 for (j = 0; j < 4; j++)
1415 if (hidden_side & (1 << j))
1419 (gdk_rgba_equal (&colors[i], &colors[j])))
1421 /* We were already painted when i == j */
1426 _gtk_rounded_box_path_top (border_box, &padding_box, cr);
1428 _gtk_rounded_box_path_right (border_box, &padding_box, cr);
1430 _gtk_rounded_box_path_bottom (border_box, &padding_box, cr);
1432 _gtk_rounded_box_path_left (border_box, &padding_box, cr);
1435 /* We were already painted when i == j */
1439 gdk_cairo_set_source_rgba (cr, &colors[i]);
1447 set_stroke_style (cairo_t *cr,
1449 GtkBorderStyle style,
1455 cairo_set_line_width (cr, line_width);
1457 if (style == GTK_BORDER_STYLE_DOTTED)
1459 n = round (0.5 * length / line_width);
1462 segments[1] = n ? length / n : 2;
1463 cairo_set_dash (cr, segments, G_N_ELEMENTS (segments), 0);
1465 cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
1466 cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
1470 n = length / line_width;
1471 /* Optimize the common case of an integer-sized rectangle
1472 * Again, we care about focus rectangles.
1474 if (n == nearbyint (n))
1481 n = round ((1. / 3) * n);
1483 segments[0] = n ? (1. / 3) * length / n : 1;
1484 segments[1] = 2 * segments[1];
1486 cairo_set_dash (cr, segments, G_N_ELEMENTS (segments), 0);
1488 cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
1489 cairo_set_line_join (cr, CAIRO_LINE_JOIN_MITER);
1494 get_border_side (GtkBorder *border,
1502 return border->right;
1503 case GTK_CSS_BOTTOM:
1504 return border->bottom;
1506 return border->left;
1508 g_assert_not_reached ();
1514 render_frame_stroke (cairo_t *cr,
1515 GtkRoundedBox *border_box,
1519 GtkBorderStyle stroke_style)
1521 gboolean different_colors, different_borders;
1522 GtkRoundedBox stroke_box;
1525 different_colors = !gdk_rgba_equal (&colors[0], &colors[1]) ||
1526 !gdk_rgba_equal (&colors[0], &colors[2]) ||
1527 !gdk_rgba_equal (&colors[0], &colors[3]);
1528 different_borders = border->top != border->right ||
1529 border->top != border->bottom ||
1530 border->top != border->left;
1532 stroke_box = *border_box;
1533 _gtk_rounded_box_shrink (&stroke_box,
1535 border->right / 2.0,
1536 border->bottom / 2.0,
1537 border->left / 2.0);
1539 if (!different_colors && !different_borders && hidden_side == 0)
1544 * Mostly expected to trigger for focus rectangles */
1545 for (i = 0; i < 4; i++)
1547 length += _gtk_rounded_box_guess_length (&stroke_box, i);
1548 _gtk_rounded_box_path_side (&stroke_box, cr, i);
1551 gdk_cairo_set_source_rgba (cr, &colors[0]);
1552 set_stroke_style (cr, border->top, stroke_style, length);
1557 GtkRoundedBox padding_box;
1559 padding_box = *border_box;
1560 _gtk_rounded_box_path (&padding_box, cr);
1561 _gtk_rounded_box_shrink (&padding_box,
1567 for (i = 0; i < 4; i++)
1569 if (hidden_side & (1 << i))
1575 _gtk_rounded_box_path_top (border_box, &padding_box, cr);
1577 _gtk_rounded_box_path_right (border_box, &padding_box, cr);
1579 _gtk_rounded_box_path_bottom (border_box, &padding_box, cr);
1581 _gtk_rounded_box_path_left (border_box, &padding_box, cr);
1584 _gtk_rounded_box_path_side (&stroke_box, cr, i);
1586 gdk_cairo_set_source_rgba (cr, &colors[i]);
1587 set_stroke_style (cr,
1588 get_border_side (border, i),
1590 _gtk_rounded_box_guess_length (&stroke_box, i));
1599 render_border (cairo_t *cr,
1600 GtkRoundedBox *border_box,
1604 GtkBorderStyle border_style[4])
1610 cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
1612 for (i = 0; i < 4; i++)
1614 if (hidden_side & (1 << i))
1617 switch (border_style[i])
1619 case GTK_BORDER_STYLE_NONE:
1620 case GTK_BORDER_STYLE_HIDDEN:
1621 case GTK_BORDER_STYLE_SOLID:
1623 case GTK_BORDER_STYLE_INSET:
1624 if (i == 1 || i == 2)
1625 color_shade (&colors[i], 1.8, &colors[i]);
1627 case GTK_BORDER_STYLE_OUTSET:
1628 if (i == 0 || i == 3)
1629 color_shade (&colors[i], 1.8, &colors[i]);
1631 case GTK_BORDER_STYLE_DOTTED:
1632 case GTK_BORDER_STYLE_DASHED:
1634 guint dont_draw = hidden_side;
1636 for (j = 0; j < 4; j++)
1638 if (border_style[j] == border_style[i])
1639 hidden_side |= (1 << j);
1641 dont_draw |= (1 << j);
1644 render_frame_stroke (cr, border_box, border, colors, dont_draw, border_style[i]);
1647 case GTK_BORDER_STYLE_DOUBLE:
1649 GtkRoundedBox other_box;
1650 GtkBorder other_border;
1651 guint dont_draw = hidden_side;
1653 for (j = 0; j < 4; j++)
1655 if (border_style[j] == GTK_BORDER_STYLE_DOUBLE)
1656 hidden_side |= (1 << j);
1658 dont_draw |= (1 << j);
1660 other_border.top = (border->top + 2) / 3;
1661 other_border.right = (border->right + 2) / 3;
1662 other_border.bottom = (border->bottom + 2) / 3;
1663 other_border.left = (border->left + 2) / 3;
1665 render_frame_fill (cr, border_box, &other_border, colors, dont_draw);
1667 other_box = *border_box;
1668 _gtk_rounded_box_shrink (&other_box,
1669 border->top - other_border.top,
1670 border->right - other_border.right,
1671 border->bottom - other_border.bottom,
1672 border->left - other_border.left);
1673 render_frame_fill (cr, &other_box, &other_border, colors, dont_draw);
1675 case GTK_BORDER_STYLE_GROOVE:
1676 case GTK_BORDER_STYLE_RIDGE:
1678 GtkRoundedBox other_box;
1679 GdkRGBA other_colors[4];
1680 guint dont_draw = hidden_side;
1681 GtkBorder other_border;
1683 for (j = 0; j < 4; j++)
1685 other_colors[j] = colors[j];
1686 if ((j == 0 || j == 3) ^ (border_style[j] == GTK_BORDER_STYLE_RIDGE))
1687 color_shade (&other_colors[j], 1.8, &other_colors[j]);
1689 color_shade (&colors[j], 1.8, &colors[j]);
1690 if (border_style[j] == GTK_BORDER_STYLE_GROOVE ||
1691 border_style[j] == GTK_BORDER_STYLE_RIDGE)
1692 hidden_side |= (1 << j);
1694 dont_draw |= (1 << j);
1696 other_border.top = border->top / 2;
1697 other_border.right = border->right / 2;
1698 other_border.bottom = border->bottom / 2;
1699 other_border.left = border->left / 2;
1701 render_frame_fill (cr, border_box, &other_border, colors, dont_draw);
1703 other_box = *border_box;
1704 _gtk_rounded_box_shrink (&other_box,
1705 other_border.top, other_border.right,
1706 other_border.bottom, other_border.left);
1707 other_border.top = border->top - other_border.top;
1708 other_border.right = border->right - other_border.right;
1709 other_border.bottom = border->bottom - other_border.bottom;
1710 other_border.left = border->left - other_border.left;
1711 render_frame_fill (cr, &other_box, &other_border, other_colors, dont_draw);
1715 g_assert_not_reached ();
1720 render_frame_fill (cr, border_box, border, colors, hidden_side);
1726 render_frame_internal (GtkThemingEngine *engine,
1733 GtkJunctionSides junction)
1735 GtkBorderImage border_image;
1736 GtkStateFlags state;
1737 GtkBorderStyle border_style[4];
1738 GtkRoundedBox border_box;
1742 state = gtk_theming_engine_get_state (engine);
1744 gtk_theming_engine_get_border (engine, state, &border);
1745 gtk_theming_engine_hide_border_sides (&border, hidden_side);
1747 if (_gtk_border_image_init (&border_image, engine))
1748 _gtk_border_image_render (&border_image, &border, cr, x, y, width, height);
1751 border_style[0] = _gtk_css_border_style_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
1752 border_style[1] = _gtk_css_border_style_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_RIGHT_STYLE));
1753 border_style[2] = _gtk_css_border_style_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_BOTTOM_STYLE));
1754 border_style[3] = _gtk_css_border_style_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_LEFT_STYLE));
1756 colors[0] = *_gtk_css_rgba_value_get_rgba (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_COLOR));
1757 colors[1] = *_gtk_css_rgba_value_get_rgba (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_RIGHT_COLOR));
1758 colors[2] = *_gtk_css_rgba_value_get_rgba (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_BOTTOM_COLOR));
1759 colors[3] = *_gtk_css_rgba_value_get_rgba (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_LEFT_COLOR));
1761 _gtk_rounded_box_init_rect (&border_box, x, y, width, height);
1762 _gtk_rounded_box_apply_border_radius_for_engine (&border_box, engine, junction);
1764 render_border (cr, &border_box, &border, hidden_side, colors, border_style);
1767 border_style[0] = _gtk_css_border_style_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_OUTLINE_STYLE));
1768 if (border_style[0] != GTK_BORDER_STYLE_NONE)
1772 border_style[1] = border_style[2] = border_style[3] = border_style[0];
1773 border.top = round (_gtk_css_number_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_OUTLINE_WIDTH), 100));
1774 border.left = border.right = border.bottom = border.top;
1775 colors[0] = *_gtk_css_rgba_value_get_rgba (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_OUTLINE_COLOR));
1776 colors[3] = colors[2] = colors[1] = colors[0];
1777 offset = _gtk_css_number_value_get (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_OUTLINE_OFFSET), 100);
1779 /* reinit box here - outlines don't have a border radius */
1780 _gtk_rounded_box_init_rect (&border_box, x, y, width, height);
1781 _gtk_rounded_box_shrink (&border_box,
1782 - border.top - offset,
1783 - border.right - offset,
1784 - border.left - offset,
1785 - border.bottom - offset);
1787 render_border (cr, &border_box, &border, hidden_side, colors, border_style);
1792 gtk_theming_engine_render_frame (GtkThemingEngine *engine,
1799 GtkJunctionSides junction;
1801 junction = gtk_theming_engine_get_junction_sides (engine);
1803 render_frame_internal (engine, cr,
1804 x, y, width, height,
1809 gtk_theming_engine_render_expander (GtkThemingEngine *engine,
1816 GtkStateFlags flags;
1817 GdkRGBA outline_color, fg_color;
1818 double vertical_overshoot;
1821 double interp; /* interpolation factor for center position */
1822 double x_double_horz, y_double_horz;
1823 double x_double_vert, y_double_vert;
1824 double x_double, y_double;
1831 flags = gtk_theming_engine_get_state (engine);
1833 gtk_theming_engine_get_color (engine, flags, &fg_color);
1834 gtk_theming_engine_get_border_color (engine, flags, &outline_color);
1836 is_rtl = (gtk_theming_engine_get_direction (engine) == GTK_TEXT_DIR_RTL);
1838 progress = (flags & GTK_STATE_FLAG_ACTIVE) ? 1 : 0;
1840 if (!gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_HORIZONTAL))
1843 angle = (G_PI) - ((G_PI / 2) * progress);
1845 angle = (G_PI / 2) * progress;
1850 angle = (G_PI / 2) + ((G_PI / 2) * progress);
1852 angle = (G_PI / 2) - ((G_PI / 2) * progress);
1857 /* Compute distance that the stroke extends beyonds the end
1858 * of the triangle we draw.
1860 vertical_overshoot = line_width / 2.0 * (1. / tan (G_PI / 8));
1862 /* For odd line widths, we end the vertical line of the triangle
1863 * at a half pixel, so we round differently.
1865 if (line_width % 2 == 1)
1866 vertical_overshoot = ceil (0.5 + vertical_overshoot) - 0.5;
1868 vertical_overshoot = ceil (vertical_overshoot);
1870 /* Adjust the size of the triangle we draw so that the entire stroke fits
1872 diameter = (gint) MAX (3, width - 2 * vertical_overshoot);
1874 /* If the line width is odd, we want the diameter to be even,
1875 * and vice versa, so force the sum to be odd. This relationship
1876 * makes the point of the triangle look right.
1878 diameter -= (1 - (diameter + line_width) % 2);
1880 radius = diameter / 2.;
1882 /* Adjust the center so that the stroke is properly aligned with
1883 * the pixel grid. The center adjustment is different for the
1884 * horizontal and vertical orientations. For intermediate positions
1885 * we interpolate between the two.
1887 x_double_vert = floor ((x + width / 2) - (radius + line_width) / 2.) + (radius + line_width) / 2.;
1888 y_double_vert = (y + height / 2) - 0.5;
1890 x_double_horz = (x + width / 2) - 0.5;
1891 y_double_horz = floor ((y + height / 2) - (radius + line_width) / 2.) + (radius + line_width) / 2.;
1893 x_double = x_double_vert * (1 - interp) + x_double_horz * interp;
1894 y_double = y_double_vert * (1 - interp) + y_double_horz * interp;
1896 cairo_translate (cr, x_double, y_double);
1897 cairo_rotate (cr, angle);
1899 cairo_move_to (cr, - radius / 2., - radius);
1900 cairo_line_to (cr, radius / 2., 0);
1901 cairo_line_to (cr, - radius / 2., radius);
1902 cairo_close_path (cr);
1904 cairo_set_line_width (cr, line_width);
1906 gdk_cairo_set_source_rgba (cr, &fg_color);
1908 cairo_fill_preserve (cr);
1910 gdk_cairo_set_source_rgba (cr, &outline_color);
1917 gtk_theming_engine_render_focus (GtkThemingEngine *engine,
1924 GtkStateFlags flags;
1930 flags = gtk_theming_engine_get_state (engine);
1932 gtk_theming_engine_get_color (engine, flags, &color);
1934 gtk_theming_engine_get_style (engine,
1935 "focus-line-width", &line_width,
1936 "focus-line-pattern", (gchar *) &dash_list,
1939 cairo_set_line_width (cr, (gdouble) line_width);
1943 gint n_dashes = strlen ((const gchar *) dash_list);
1944 gdouble *dashes = g_new (gdouble, n_dashes);
1945 gdouble total_length = 0;
1946 gdouble dash_offset;
1949 for (i = 0; i < n_dashes; i++)
1951 dashes[i] = dash_list[i];
1952 total_length += dash_list[i];
1955 /* The dash offset here aligns the pattern to integer pixels
1956 * by starting the dash at the right side of the left border
1957 * Negative dash offsets in cairo don't work
1958 * (https://bugs.freedesktop.org/show_bug.cgi?id=2729)
1960 dash_offset = - line_width / 2.;
1962 while (dash_offset < 0)
1963 dash_offset += total_length;
1965 cairo_set_dash (cr, dashes, n_dashes, dash_offset);
1969 cairo_rectangle (cr,
1970 x + line_width / 2.,
1971 y + line_width / 2.,
1973 height - line_width);
1975 gdk_cairo_set_source_rgba (cr, &color);
1984 gtk_theming_engine_render_line (GtkThemingEngine *engine,
1992 GtkStateFlags flags;
1994 flags = gtk_theming_engine_get_state (engine);
1997 gtk_theming_engine_get_color (engine, flags, &color);
1999 cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
2000 cairo_set_line_width (cr, 1);
2002 cairo_move_to (cr, x0 + 0.5, y0 + 0.5);
2003 cairo_line_to (cr, x1 + 0.5, y1 + 0.5);
2005 gdk_cairo_set_source_rgba (cr, &color);
2012 prepare_context_for_layout (cairo_t *cr,
2015 PangoLayout *layout)
2017 const PangoMatrix *matrix;
2019 matrix = pango_context_get_matrix (pango_layout_get_context (layout));
2021 cairo_move_to (cr, x, y);
2025 cairo_matrix_t cairo_matrix;
2027 cairo_matrix_init (&cairo_matrix,
2028 matrix->xx, matrix->yx,
2029 matrix->xy, matrix->yy,
2030 matrix->x0, matrix->y0);
2032 cairo_transform (cr, &cairo_matrix);
2037 gtk_theming_engine_render_layout (GtkThemingEngine *engine,
2041 PangoLayout *layout)
2044 GtkStateFlags flags;
2047 flags = gtk_theming_engine_get_state (engine);
2048 gtk_theming_engine_get_color (engine, flags, &fg_color);
2050 prepare_context_for_layout (cr, x, y, layout);
2052 _gtk_css_shadows_value_paint_layout (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_TEXT_SHADOW),
2055 gdk_cairo_set_source_rgba (cr, &fg_color);
2056 pango_cairo_show_layout (cr, layout);
2062 gtk_theming_engine_render_slider (GtkThemingEngine *engine,
2068 GtkOrientation orientation)
2070 gtk_theming_engine_render_background (engine, cr, x, y, width, height);
2071 gtk_theming_engine_render_frame (engine, cr, x, y, width, height);
2075 gtk_theming_engine_render_frame_gap (GtkThemingEngine *engine,
2081 GtkPositionType gap_side,
2085 GtkJunctionSides junction;
2086 GtkStateFlags state;
2088 GtkCssValue *corner[4];
2089 gdouble x0, y0, x1, y1, xc, yc, wc, hc;
2092 xc = yc = wc = hc = 0;
2093 state = gtk_theming_engine_get_state (engine);
2094 junction = gtk_theming_engine_get_junction_sides (engine);
2096 gtk_theming_engine_get_border (engine, state, &border);
2097 corner[GTK_CSS_TOP_LEFT] = _gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_LEFT_RADIUS);
2098 corner[GTK_CSS_TOP_RIGHT] = _gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_TOP_RIGHT_RADIUS);
2099 corner[GTK_CSS_BOTTOM_LEFT] = _gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_BOTTOM_LEFT_RADIUS);
2100 corner[GTK_CSS_BOTTOM_RIGHT] = _gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_BORDER_BOTTOM_RIGHT_RADIUS);
2102 border_width = MIN (MIN (border.top, border.bottom),
2103 MIN (border.left, border.right));
2110 xc = x + xy0_gap + border_width;
2112 wc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2115 if (xy0_gap < _gtk_css_corner_value_get_x (corner[GTK_CSS_TOP_LEFT], width))
2116 junction |= GTK_JUNCTION_CORNER_TOPLEFT;
2118 if (xy1_gap > width - _gtk_css_corner_value_get_x (corner[GTK_CSS_TOP_RIGHT], width))
2119 junction |= GTK_JUNCTION_CORNER_TOPRIGHT;
2121 case GTK_POS_BOTTOM:
2122 xc = x + xy0_gap + border_width;
2123 yc = y + height - border_width;
2124 wc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2127 if (xy0_gap < _gtk_css_corner_value_get_x (corner[GTK_CSS_BOTTOM_LEFT], width))
2128 junction |= GTK_JUNCTION_CORNER_BOTTOMLEFT;
2130 if (xy1_gap > width - _gtk_css_corner_value_get_x (corner[GTK_CSS_BOTTOM_RIGHT], width))
2131 junction |= GTK_JUNCTION_CORNER_BOTTOMRIGHT;
2136 yc = y + xy0_gap + border_width;
2138 hc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2140 if (xy0_gap < _gtk_css_corner_value_get_y (corner[GTK_CSS_TOP_LEFT], height))
2141 junction |= GTK_JUNCTION_CORNER_TOPLEFT;
2143 if (xy1_gap > height - _gtk_css_corner_value_get_y (corner[GTK_CSS_BOTTOM_LEFT], height))
2144 junction |= GTK_JUNCTION_CORNER_BOTTOMLEFT;
2148 xc = x + width - border_width;
2149 yc = y + xy0_gap + border_width;
2151 hc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
2153 if (xy0_gap < _gtk_css_corner_value_get_y (corner[GTK_CSS_TOP_RIGHT], height))
2154 junction |= GTK_JUNCTION_CORNER_TOPRIGHT;
2156 if (xy1_gap > height - _gtk_css_corner_value_get_y (corner[GTK_CSS_BOTTOM_RIGHT], height))
2157 junction |= GTK_JUNCTION_CORNER_BOTTOMRIGHT;
2162 cairo_clip_extents (cr, &x0, &y0, &x1, &y1);
2163 cairo_rectangle (cr, x0, y0, x1 - x0, yc - y0);
2164 cairo_rectangle (cr, x0, yc, xc - x0, hc);
2165 cairo_rectangle (cr, xc + wc, yc, x1 - (xc + wc), hc);
2166 cairo_rectangle (cr, x0, yc + hc, x1 - x0, y1 - (yc + hc));
2169 render_frame_internal (engine, cr,
2170 x, y, width, height,
2177 gtk_theming_engine_render_extension (GtkThemingEngine *engine,
2183 GtkPositionType gap_side)
2185 GtkThemingBackground bg;
2186 GtkJunctionSides junction = 0;
2187 guint hidden_side = 0;
2192 junction = GTK_JUNCTION_LEFT;
2193 hidden_side = (1 << GTK_CSS_LEFT);
2196 junction = GTK_JUNCTION_RIGHT;
2197 hidden_side = (1 << GTK_CSS_RIGHT);
2200 junction = GTK_JUNCTION_TOP;
2201 hidden_side = (1 << GTK_CSS_TOP);
2203 case GTK_POS_BOTTOM:
2204 junction = GTK_JUNCTION_BOTTOM;
2205 hidden_side = (1 << GTK_CSS_BOTTOM);
2209 _gtk_theming_background_init (&bg, engine,
2213 _gtk_theming_background_render (&bg, cr);
2215 render_frame_internal (engine, cr,
2216 x, y, width, height,
2217 hidden_side, junction);
2221 render_dot (cairo_t *cr,
2222 const GdkRGBA *lighter,
2223 const GdkRGBA *darker,
2228 size = CLAMP ((gint) size, 2, 3);
2232 gdk_cairo_set_source_rgba (cr, lighter);
2233 cairo_rectangle (cr, x, y, 1, 1);
2234 cairo_rectangle (cr, x + 1, y + 1, 1, 1);
2239 gdk_cairo_set_source_rgba (cr, lighter);
2240 cairo_rectangle (cr, x, y, 2, 1);
2241 cairo_rectangle (cr, x, y, 1, 2);
2244 gdk_cairo_set_source_rgba (cr, darker);
2245 cairo_rectangle (cr, x + 1, y + 1, 2, 1);
2246 cairo_rectangle (cr, x + 2, y, 1, 2);
2252 gtk_theming_engine_render_handle (GtkThemingEngine *engine,
2259 GtkStateFlags flags;
2260 GdkRGBA bg_color, lighter, darker;
2261 GtkJunctionSides sides;
2262 GtkThemingBackground bg;
2267 flags = gtk_theming_engine_get_state (engine);
2269 cairo_set_line_width (cr, 1.0);
2270 sides = gtk_theming_engine_get_junction_sides (engine);
2271 gtk_theming_engine_get_background_color (engine, flags, &bg_color);
2273 color_shade (&bg_color, 0.7, &darker);
2274 color_shade (&bg_color, 1.3, &lighter);
2276 _gtk_theming_background_init (&bg, engine, x, y, width, height, sides);
2277 has_image = _gtk_theming_background_has_background_image (&bg);
2278 _gtk_theming_background_render (&bg, cr);
2280 gtk_theming_engine_render_frame (engine, cr, x, y, width, height);
2282 if (gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_GRIP))
2284 /* reduce confusing values to a meaningful state */
2285 if ((sides & (GTK_JUNCTION_CORNER_TOPLEFT | GTK_JUNCTION_CORNER_BOTTOMRIGHT)) == (GTK_JUNCTION_CORNER_TOPLEFT | GTK_JUNCTION_CORNER_BOTTOMRIGHT))
2286 sides &= ~GTK_JUNCTION_CORNER_TOPLEFT;
2288 if ((sides & (GTK_JUNCTION_CORNER_TOPRIGHT | GTK_JUNCTION_CORNER_BOTTOMLEFT)) == (GTK_JUNCTION_CORNER_TOPRIGHT | GTK_JUNCTION_CORNER_BOTTOMLEFT))
2289 sides &= ~GTK_JUNCTION_CORNER_TOPRIGHT;
2292 sides = GTK_JUNCTION_CORNER_BOTTOMRIGHT;
2294 /* align drawing area to the connected side */
2295 if (sides == GTK_JUNCTION_LEFT)
2300 else if (sides == GTK_JUNCTION_CORNER_TOPLEFT)
2304 else if (height < width)
2307 else if (sides == GTK_JUNCTION_CORNER_BOTTOMLEFT)
2309 /* make it square, aligning to bottom left */
2312 y += (height - width);
2315 else if (height < width)
2318 else if (sides == GTK_JUNCTION_RIGHT)
2320 /* aligning to right */
2323 x += (width - height);
2327 else if (sides == GTK_JUNCTION_CORNER_TOPRIGHT)
2331 else if (height < width)
2333 x += (width - height);
2337 else if (sides == GTK_JUNCTION_CORNER_BOTTOMRIGHT)
2339 /* make it square, aligning to bottom right */
2342 y += (height - width);
2345 else if (height < width)
2347 x += (width - height);
2351 else if (sides == GTK_JUNCTION_TOP)
2356 else if (sides == GTK_JUNCTION_BOTTOM)
2358 /* align to bottom */
2361 y += (height - width);
2366 g_assert_not_reached ();
2368 if (sides == GTK_JUNCTION_LEFT ||
2369 sides == GTK_JUNCTION_RIGHT)
2375 while (xi < x + width)
2377 gdk_cairo_set_source_rgba (cr, &lighter);
2378 add_path_line (cr, x, y, x, y + height);
2382 gdk_cairo_set_source_rgba (cr, &darker);
2383 add_path_line (cr, xi, y, xi, y + height);
2388 else if (sides == GTK_JUNCTION_TOP ||
2389 sides == GTK_JUNCTION_BOTTOM)
2395 while (yi < y + height)
2397 gdk_cairo_set_source_rgba (cr, &lighter);
2398 add_path_line (cr, x, yi, x + width, yi);
2402 gdk_cairo_set_source_rgba (cr, &darker);
2403 add_path_line (cr, x, yi, x + width, yi);
2408 else if (sides == GTK_JUNCTION_CORNER_TOPLEFT)
2417 gdk_cairo_set_source_rgba (cr, &darker);
2418 add_path_line (cr, xi, y, x, yi);
2424 add_path_line (cr, xi, y, x, yi);
2430 gdk_cairo_set_source_rgba (cr, &lighter);
2431 add_path_line (cr, xi, y, x, yi);
2438 else if (sides == GTK_JUNCTION_CORNER_TOPRIGHT)
2445 while (xi < (x + width - 3))
2447 gdk_cairo_set_source_rgba (cr, &lighter);
2448 add_path_line (cr, xi, y, x + width, yi);
2454 gdk_cairo_set_source_rgba (cr, &darker);
2455 add_path_line (cr, xi, y, x + width, yi);
2461 add_path_line (cr, xi, y, x + width, yi);
2468 else if (sides == GTK_JUNCTION_CORNER_BOTTOMLEFT)
2477 gdk_cairo_set_source_rgba (cr, &darker);
2478 add_path_line (cr, x, yi, xi, y + height);
2484 add_path_line (cr, x, yi, xi, y + height);
2490 gdk_cairo_set_source_rgba (cr, &lighter);
2491 add_path_line (cr, x, yi, xi, y + height);
2498 else if (sides == GTK_JUNCTION_CORNER_BOTTOMRIGHT)
2505 while (xi < (x + width - 3))
2507 gdk_cairo_set_source_rgba (cr, &lighter);
2508 add_path_line (cr, xi, y + height, x + width, yi);
2514 gdk_cairo_set_source_rgba (cr, &darker);
2515 add_path_line (cr, xi, y + height, x + width, yi);
2521 add_path_line (cr, xi, y + height, x + width, yi);
2529 else if (gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_PANE_SEPARATOR))
2534 for (xx = x + width / 2 - 15; xx <= x + width / 2 + 15; xx += 5)
2535 render_dot (cr, &lighter, &darker, xx, y + height / 2 - 1, 3);
2537 for (yy = y + height / 2 - 15; yy <= y + height / 2 + 15; yy += 5)
2538 render_dot (cr, &lighter, &darker, x + width / 2 - 1, yy, 3);
2543 for (yy = y; yy < y + height; yy += 3)
2544 for (xx = x; xx < x + width; xx += 6)
2546 render_dot (cr, &lighter, &darker, xx, yy, 2);
2547 render_dot (cr, &lighter, &darker, xx + 3, yy + 1, 2);
2555 _gtk_theming_engine_paint_spinner (cairo_t *cr,
2558 const GdkRGBA *color)
2560 guint num_steps, step;
2567 step = (guint) (progress * num_steps);
2573 cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
2574 cairo_set_line_width (cr, 2.0);
2576 half = num_steps / 2;
2578 for (i = 0; i < num_steps; i++)
2580 gint inset = 0.7 * radius;
2582 /* transparency is a function of time and intial value */
2583 gdouble t = 1.0 - (gdouble) ((i + step) % num_steps) / num_steps;
2584 gdouble xscale = - sin (i * G_PI / half);
2585 gdouble yscale = - cos (i * G_PI / half);
2587 cairo_set_source_rgba (cr,
2594 (radius - inset) * xscale,
2595 (radius - inset) * yscale);
2607 render_spinner (GtkThemingEngine *engine,
2614 GtkStateFlags state;
2618 state = gtk_theming_engine_get_state (engine);
2619 radius = MIN (width / 2, height / 2);
2621 gtk_theming_engine_get_color (engine, state, &color);
2624 cairo_translate (cr, x + width / 2, y + height / 2);
2626 _gtk_css_shadows_value_paint_spinner (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_ICON_SHADOW),
2631 _gtk_theming_engine_paint_spinner (cr,
2640 gtk_theming_engine_render_activity (GtkThemingEngine *engine,
2647 if (gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_SPINNER))
2649 render_spinner (engine, cr, x, y, width, height);
2653 gtk_theming_engine_render_background (engine, cr, x, y, width, height);
2654 gtk_theming_engine_render_frame (engine, cr, x, y, width, height);
2659 scale_or_ref (GdkPixbuf *src,
2663 if (width == gdk_pixbuf_get_width (src) &&
2664 height == gdk_pixbuf_get_height (src))
2665 return g_object_ref (src);
2667 return gdk_pixbuf_scale_simple (src,
2669 GDK_INTERP_BILINEAR);
2673 lookup_icon_size (GtkThemingEngine *engine,
2679 GtkSettings *settings;
2681 screen = gtk_theming_engine_get_screen (engine);
2682 settings = gtk_settings_get_for_screen (screen);
2684 return gtk_icon_size_lookup_for_settings (settings, size, width, height);
2688 colorshift_source (cairo_t *cr,
2691 cairo_pattern_t *source;
2696 source = cairo_pattern_reference (cairo_get_source (cr));
2698 cairo_set_source_rgb (cr, shift, shift, shift);
2699 cairo_set_operator (cr, CAIRO_OPERATOR_COLOR_DODGE);
2701 cairo_mask (cr, source);
2703 cairo_pattern_destroy (source);
2708 gtk_theming_engine_render_icon_pixbuf (GtkThemingEngine *engine,
2709 const GtkIconSource *source,
2714 GdkPixbuf *base_pixbuf;
2715 GtkStateFlags state;
2719 cairo_surface_t *surface;
2721 base_pixbuf = gtk_icon_source_get_pixbuf (source);
2722 state = gtk_theming_engine_get_state (engine);
2724 g_return_val_if_fail (base_pixbuf != NULL, NULL);
2726 if (size != (GtkIconSize) -1 &&
2727 !lookup_icon_size (engine, size, &width, &height))
2729 g_warning (G_STRLOC ": invalid icon size '%d'", size);
2733 /* If the size was wildcarded, and we're allowed to scale, then scale; otherwise,
2736 if (size != (GtkIconSize) -1 &&
2737 gtk_icon_source_get_size_wildcarded (source))
2738 scaled = scale_or_ref (base_pixbuf, width, height);
2740 scaled = g_object_ref (base_pixbuf);
2742 /* If the state was wildcarded, then generate a state. */
2743 if (gtk_icon_source_get_state_wildcarded (source))
2745 if (state & GTK_STATE_FLAG_INSENSITIVE)
2747 surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
2748 gdk_pixbuf_get_width (scaled),
2749 gdk_pixbuf_get_height (scaled));
2750 cr = cairo_create (surface);
2751 gdk_cairo_set_source_pixbuf (cr, scaled, 0, 0);
2752 cairo_paint_with_alpha (cr, 0.5);
2756 g_object_unref (scaled);
2757 stated = gdk_pixbuf_get_from_surface (surface, 0, 0,
2758 cairo_image_surface_get_width (surface),
2759 cairo_image_surface_get_height (surface));
2760 cairo_surface_destroy (surface);
2762 else if (state & GTK_STATE_FLAG_PRELIGHT)
2764 surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
2765 gdk_pixbuf_get_width (scaled),
2766 gdk_pixbuf_get_height (scaled));
2768 cr = cairo_create (surface);
2769 gdk_cairo_set_source_pixbuf (cr, scaled, 0, 0);
2770 colorshift_source (cr, 0.10);
2774 g_object_unref (scaled);
2775 stated = gdk_pixbuf_get_from_surface (surface, 0, 0,
2776 cairo_image_surface_get_width (surface),
2777 cairo_image_surface_get_height (surface));
2778 cairo_surface_destroy (surface);
2790 gtk_theming_engine_render_icon (GtkThemingEngine *engine,
2798 gdk_cairo_set_source_pixbuf (cr, pixbuf, x, y);
2800 _gtk_css_shadows_value_paint_icon (_gtk_theming_engine_peek_property (engine, GTK_CSS_PROPERTY_ICON_SHADOW), cr);