1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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.
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
33 typedef struct _GtkGCKey GtkGCKey;
34 typedef struct _GtkGCDrawable GtkGCDrawable;
39 GdkColormap *colormap;
51 static void gtk_gc_init (void);
52 static GtkGCKey* gtk_gc_key_dup (GtkGCKey *key);
53 static void gtk_gc_key_destroy (GtkGCKey *key);
54 static gpointer gtk_gc_new (gpointer key);
55 static void gtk_gc_destroy (gpointer value);
56 static guint gtk_gc_key_hash (gpointer key);
57 static guint gtk_gc_value_hash (gpointer value);
58 static gint gtk_gc_key_equal (gpointer a,
60 static guint gtk_gc_drawable_hash (GtkGCDrawable *d);
61 static gint gtk_gc_drawable_equal (GtkGCDrawable *a,
65 static gint initialize = TRUE;
66 static GCache *gc_cache = NULL;
67 static GQuark quark_gtk_gc_drawable_ht = 0;
70 gtk_gc_get (gint depth,
71 GdkColormap *colormap,
73 GdkGCValuesMask values_mask)
82 key.colormap = colormap;
84 key.mask = values_mask;
86 gc = g_cache_insert (gc_cache, &key);
92 gtk_gc_release (GdkGC *gc)
97 g_cache_remove (gc_cache, gc);
101 free_gc_drawable (gpointer data)
103 GtkGCDrawable *drawable = data;
104 g_object_unref (drawable->drawable);
105 g_slice_free (GtkGCDrawable, drawable);
109 gtk_gc_get_drawable_ht (GdkScreen *screen)
111 GHashTable *ht = g_object_get_qdata (G_OBJECT (screen), quark_gtk_gc_drawable_ht);
114 ht = g_hash_table_new_full ((GHashFunc) gtk_gc_drawable_hash,
115 (GEqualFunc) gtk_gc_drawable_equal,
116 NULL, free_gc_drawable);
117 g_object_set_qdata_full (G_OBJECT (screen),
118 quark_gtk_gc_drawable_ht, ht,
119 (GDestroyNotify)g_hash_table_destroy);
130 quark_gtk_gc_drawable_ht = g_quark_from_static_string ("gtk-gc-drawable-ht");
132 gc_cache = g_cache_new ((GCacheNewFunc) gtk_gc_new,
133 (GCacheDestroyFunc) gtk_gc_destroy,
134 (GCacheDupFunc) gtk_gc_key_dup,
135 (GCacheDestroyFunc) gtk_gc_key_destroy,
136 (GHashFunc) gtk_gc_key_hash,
137 (GHashFunc) gtk_gc_value_hash,
138 (GEqualFunc) gtk_gc_key_equal);
142 gtk_gc_key_dup (GtkGCKey *key)
146 new_key = g_slice_new (GtkGCKey);
154 gtk_gc_key_destroy (GtkGCKey *key)
156 g_slice_free (GtkGCKey, key);
160 gtk_gc_new (gpointer key)
163 GtkGCDrawable *drawable;
169 screen = gdk_colormap_get_screen (keyval->colormap);
171 ht = gtk_gc_get_drawable_ht (screen);
172 drawable = g_hash_table_lookup (ht, &keyval->depth);
175 drawable = g_slice_new (GtkGCDrawable);
176 drawable->depth = keyval->depth;
177 drawable->drawable = gdk_pixmap_new (gdk_screen_get_root_window (screen),
178 1, 1, drawable->depth);
179 g_hash_table_insert (ht, &drawable->depth, drawable);
182 gc = gdk_gc_new_with_values (drawable->drawable, &keyval->values, keyval->mask);
183 gdk_gc_set_colormap (gc, keyval->colormap);
185 return (gpointer) gc;
189 gtk_gc_destroy (gpointer value)
191 g_object_unref (value);
195 gtk_gc_key_hash (gpointer key)
203 if (keyval->mask & GDK_GC_FOREGROUND)
205 hash_val += keyval->values.foreground.pixel;
207 if (keyval->mask & GDK_GC_BACKGROUND)
209 hash_val += keyval->values.background.pixel;
211 if (keyval->mask & GDK_GC_FONT)
213 hash_val += gdk_font_id (keyval->values.font);
215 if (keyval->mask & GDK_GC_FUNCTION)
217 hash_val += (gint) keyval->values.function;
219 if (keyval->mask & GDK_GC_FILL)
221 hash_val += (gint) keyval->values.fill;
223 if (keyval->mask & GDK_GC_TILE)
225 hash_val += (gintptr) keyval->values.tile;
227 if (keyval->mask & GDK_GC_STIPPLE)
229 hash_val += (gintptr) keyval->values.stipple;
231 if (keyval->mask & GDK_GC_CLIP_MASK)
233 hash_val += (gintptr) keyval->values.clip_mask;
235 if (keyval->mask & GDK_GC_SUBWINDOW)
237 hash_val += (gint) keyval->values.subwindow_mode;
239 if (keyval->mask & GDK_GC_TS_X_ORIGIN)
241 hash_val += (gint) keyval->values.ts_x_origin;
243 if (keyval->mask & GDK_GC_TS_Y_ORIGIN)
245 hash_val += (gint) keyval->values.ts_y_origin;
247 if (keyval->mask & GDK_GC_CLIP_X_ORIGIN)
249 hash_val += (gint) keyval->values.clip_x_origin;
251 if (keyval->mask & GDK_GC_CLIP_Y_ORIGIN)
253 hash_val += (gint) keyval->values.clip_y_origin;
255 if (keyval->mask & GDK_GC_EXPOSURES)
257 hash_val += (gint) keyval->values.graphics_exposures;
259 if (keyval->mask & GDK_GC_LINE_WIDTH)
261 hash_val += (gint) keyval->values.line_width;
263 if (keyval->mask & GDK_GC_LINE_STYLE)
265 hash_val += (gint) keyval->values.line_style;
267 if (keyval->mask & GDK_GC_CAP_STYLE)
269 hash_val += (gint) keyval->values.cap_style;
271 if (keyval->mask & GDK_GC_JOIN_STYLE)
273 hash_val += (gint) keyval->values.join_style;
280 gtk_gc_value_hash (gpointer value)
282 return (gulong) value;
286 gtk_gc_key_equal (gpointer a,
291 GdkGCValues *avalues;
292 GdkGCValues *bvalues;
297 avalues = &akey->values;
298 bvalues = &bkey->values;
300 if (akey->mask != bkey->mask)
303 if (akey->depth != bkey->depth)
306 if (akey->colormap != bkey->colormap)
309 if (akey->mask & GDK_GC_FOREGROUND)
311 if (avalues->foreground.pixel != bvalues->foreground.pixel)
314 if (akey->mask & GDK_GC_BACKGROUND)
316 if (avalues->background.pixel != bvalues->background.pixel)
319 if (akey->mask & GDK_GC_FONT)
321 if (!gdk_font_equal (avalues->font, bvalues->font))
324 if (akey->mask & GDK_GC_FUNCTION)
326 if (avalues->function != bvalues->function)
329 if (akey->mask & GDK_GC_FILL)
331 if (avalues->fill != bvalues->fill)
334 if (akey->mask & GDK_GC_TILE)
336 if (avalues->tile != bvalues->tile)
339 if (akey->mask & GDK_GC_STIPPLE)
341 if (avalues->stipple != bvalues->stipple)
344 if (akey->mask & GDK_GC_CLIP_MASK)
346 if (avalues->clip_mask != bvalues->clip_mask)
349 if (akey->mask & GDK_GC_SUBWINDOW)
351 if (avalues->subwindow_mode != bvalues->subwindow_mode)
354 if (akey->mask & GDK_GC_TS_X_ORIGIN)
356 if (avalues->ts_x_origin != bvalues->ts_x_origin)
359 if (akey->mask & GDK_GC_TS_Y_ORIGIN)
361 if (avalues->ts_y_origin != bvalues->ts_y_origin)
364 if (akey->mask & GDK_GC_CLIP_X_ORIGIN)
366 if (avalues->clip_x_origin != bvalues->clip_x_origin)
369 if (akey->mask & GDK_GC_CLIP_Y_ORIGIN)
371 if (avalues->clip_y_origin != bvalues->clip_y_origin)
374 if (akey->mask & GDK_GC_EXPOSURES)
376 if (avalues->graphics_exposures != bvalues->graphics_exposures)
379 if (akey->mask & GDK_GC_LINE_WIDTH)
381 if (avalues->line_width != bvalues->line_width)
384 if (akey->mask & GDK_GC_LINE_STYLE)
386 if (avalues->line_style != bvalues->line_style)
389 if (akey->mask & GDK_GC_CAP_STYLE)
391 if (avalues->cap_style != bvalues->cap_style)
394 if (akey->mask & GDK_GC_JOIN_STYLE)
396 if (avalues->join_style != bvalues->join_style)
404 gtk_gc_drawable_hash (GtkGCDrawable *d)
410 gtk_gc_drawable_equal (GtkGCDrawable *a,
413 return (a->depth == b->depth);
417 #include "gtkaliasdef.c"