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.
24 #include <gtk/gtkthemingengine.h>
25 #include <gtk/gtkstylecontext.h>
26 #include <gtk/gtkintl.h>
30 typedef struct GtkThemingEnginePrivate GtkThemingEnginePrivate;
32 struct GtkThemingEnginePrivate
34 GtkStyleContext *context;
37 #define GTK_THEMING_ENGINE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_THEMING_ENGINE, GtkThemingEnginePrivate))
39 static void gtk_theming_engine_render_check (GtkThemingEngine *engine,
46 G_DEFINE_TYPE (GtkThemingEngine, gtk_theming_engine, G_TYPE_OBJECT)
49 typedef struct GtkThemingModule GtkThemingModule;
50 typedef struct GtkThemingModuleClass GtkThemingModuleClass;
52 struct GtkThemingModule
54 GTypeModule parent_instance;
57 GtkThemingEngine * (*create_engine) (void);
60 struct GtkThemingModuleClass
62 GTypeModuleClass parent_class;
65 #define GTK_TYPE_THEMING_MODULE (gtk_theming_module_get_type ())
66 #define GTK_THEMING_MODULE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_THEMING_MODULE, GtkThemingModule))
67 #define GTK_IS_THEMING_MODULE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_THEMING_MODULE))
69 G_DEFINE_TYPE (GtkThemingModule, gtk_theming_module, G_TYPE_TYPE_MODULE);
72 gtk_theming_engine_class_init (GtkThemingEngineClass *klass)
74 GObjectClass *object_class = G_OBJECT_CLASS (klass);
76 klass->render_check = gtk_theming_engine_render_check;
78 g_type_class_add_private (object_class, sizeof (GtkThemingEnginePrivate));
82 gtk_theming_engine_init (GtkThemingEngine *engine)
84 engine->priv = GTK_THEMING_ENGINE_GET_PRIVATE (engine);
88 _gtk_theming_engine_set_context (GtkThemingEngine *engine,
89 GtkStyleContext *context)
91 GtkThemingEnginePrivate *priv;
93 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
94 g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
97 priv->context = context;
101 gtk_theming_engine_get_property (GtkThemingEngine *engine,
102 const gchar *property,
106 GtkThemingEnginePrivate *priv;
108 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
109 g_return_if_fail (property != NULL);
110 g_return_if_fail (state < GTK_STATE_LAST);
111 g_return_if_fail (value != NULL);
114 gtk_style_context_get_property (priv->context, property, state, value);
118 gtk_theming_engine_get_valist (GtkThemingEngine *engine,
122 GtkThemingEnginePrivate *priv;
124 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
125 g_return_if_fail (state < GTK_STATE_LAST);
128 gtk_style_context_get_valist (priv->context, state, args);
132 gtk_theming_engine_get (GtkThemingEngine *engine,
136 GtkThemingEnginePrivate *priv;
139 g_return_if_fail (GTK_IS_THEMING_ENGINE (engine));
140 g_return_if_fail (state < GTK_STATE_LAST);
144 va_start (args, state);
145 gtk_style_context_get_valist (priv->context, state, args);
150 gtk_theming_engine_get_state (GtkThemingEngine *engine)
152 GtkThemingEnginePrivate *priv;
154 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0);
157 return gtk_style_context_get_state (priv->context);
161 gtk_theming_engine_is_state_set (GtkThemingEngine *engine,
164 GtkThemingEnginePrivate *priv;
166 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), 0);
169 return gtk_style_context_is_state_set (priv->context, state);
172 G_CONST_RETURN GtkWidgetPath *
173 gtk_theming_engine_get_path (GtkThemingEngine *engine)
175 GtkThemingEnginePrivate *priv;
177 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), NULL);
180 return gtk_style_context_get_path (priv->context);
184 gtk_theming_engine_has_class (GtkThemingEngine *engine,
185 const gchar *style_class)
187 GtkThemingEnginePrivate *priv;
189 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
192 return gtk_style_context_has_class (priv->context, style_class);
196 gtk_theming_engine_has_child_class (GtkThemingEngine *engine,
197 const gchar *style_class,
198 GtkChildClassFlags *flags)
200 GtkThemingEnginePrivate *priv;
205 g_return_val_if_fail (GTK_IS_THEMING_ENGINE (engine), FALSE);
208 return gtk_style_context_has_child_class (priv->context, style_class, flags);
211 /* GtkThemingModule */
214 gtk_theming_module_load (GTypeModule *type_module)
216 GtkThemingModule *theming_module;
218 gchar *name, *module_path;
220 theming_module = GTK_THEMING_MODULE (type_module);
221 name = theming_module->name;
222 module_path = _gtk_find_module (name, "theming-engines");
226 g_warning (_("Unable to locate theme engine in module path: \"%s\","), name);
230 module = g_module_open (module_path, G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL);
231 g_free (module_path);
235 g_warning ("%s", g_module_error ());
239 if (!g_module_symbol (module, "create_engine",
240 (gpointer *) &theming_module->create_engine))
242 g_warning ("%s", g_module_error());
243 g_module_close (module);
248 g_module_make_resident (module);
254 gtk_theming_module_class_init (GtkThemingModuleClass *klass)
256 GTypeModuleClass *module_class = G_TYPE_MODULE_CLASS (klass);
258 module_class->load = gtk_theming_module_load;
262 gtk_theming_module_init (GtkThemingModule *module)
266 G_CONST_RETURN GtkThemingEngine *
267 gtk_theming_engine_load (const gchar *name)
269 static GHashTable *engines = NULL;
270 static GtkThemingEngine *default_engine;
271 GtkThemingEngine *engine = NULL;
276 engines = g_hash_table_new (g_str_hash, g_str_equal);
278 engine = g_hash_table_lookup (engines, name);
282 GtkThemingModule *module;
284 module = g_object_new (GTK_TYPE_THEMING_MODULE, NULL);
285 g_type_module_set_name (G_TYPE_MODULE (module), name);
286 module->name = g_strdup (name);
288 if (module && g_type_module_use (G_TYPE_MODULE (module)))
290 engine = (module->create_engine) ();
293 g_hash_table_insert (engines, module->name, engine);
301 default_engine = g_object_new (GTK_TYPE_THEMING_ENGINE, NULL);
303 engine = default_engine;
309 /* Paint method implementations */
311 gtk_theming_engine_render_check (GtkThemingEngine *engine,
318 GdkColor *fg_color, *base_color, *text_color;
319 const GtkWidgetPath *path;
323 flags = gtk_theming_engine_get_state (engine);
324 path = gtk_theming_engine_get_path (engine);
327 if (flags & GTK_STATE_FLAG_PRELIGHT)
328 state = GTK_STATE_PRELIGHT;
330 state = GTK_STATE_NORMAL;
332 gtk_theming_engine_get (engine, state,
333 "foreground-color", &fg_color,
334 "base-color", &base_color,
335 "text-color", &text_color,
338 if (!gtk_widget_path_has_parent (path, GTK_TYPE_MENU))
340 cairo_set_line_width (cr, 1);
344 width - 1, height - 1);
346 gdk_cairo_set_source_color (cr, base_color);
347 cairo_fill_preserve (cr);
349 if (gtk_widget_path_has_parent (path, GTK_TYPE_TREE_VIEW))
350 gdk_cairo_set_source_color (cr, text_color);
352 gdk_cairo_set_source_color (cr, fg_color);
357 cairo_set_line_width (cr, 1.5);
358 gdk_cairo_set_source_color (cr, text_color);
360 if (gtk_theming_engine_is_state_set (engine, GTK_STATE_INCONSISTENT))
362 cairo_move_to (cr, x + (width * 0.2), y + (height / 2));
363 cairo_line_to (cr, x + (width * 0.8), y + (height / 2));
365 else if (gtk_theming_engine_is_state_set (engine, GTK_STATE_ACTIVE))
367 cairo_move_to (cr, x + (width * 0.2), y + (height / 2));
368 cairo_line_to (cr, x + (width * 0.4), y + (height * 0.8));
369 cairo_line_to (cr, x + (width * 0.8), y + (height * 0.2));
376 gdk_color_free (fg_color);
377 gdk_color_free (base_color);
378 gdk_color_free (text_color);
381 #define __GTK_THEMING_ENGINE_C__
382 #include "gtkaliasdef.c"