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;
68 static GMemChunk *key_mem_chunk = NULL;
72 gtk_gc_get (gint depth,
73 GdkColormap *colormap,
75 GdkGCValuesMask values_mask)
84 key.colormap = colormap;
86 key.mask = values_mask;
88 gc = g_cache_insert (gc_cache, &key);
94 gtk_gc_release (GdkGC *gc)
99 g_cache_remove (gc_cache, gc);
103 free_gc_drawable (gpointer data)
105 GtkGCDrawable *drawable = data;
106 g_object_unref (drawable->drawable);
111 gtk_gc_get_drawable_ht (GdkScreen *screen)
113 GHashTable *ht = g_object_get_data (G_OBJECT (screen), "gtk-gc-drawable-ht");
116 ht = g_hash_table_new_full ((GHashFunc) gtk_gc_drawable_hash,
117 (GEqualFunc) gtk_gc_drawable_equal,
118 NULL, free_gc_drawable);
119 g_object_set_data_full (G_OBJECT (screen),
120 I_("gtk-gc-drawable-ht"), ht,
121 (GDestroyNotify)g_hash_table_destroy);
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)
147 key_mem_chunk = g_mem_chunk_new ("key mem chunk", sizeof (GtkGCKey),
148 1024, G_ALLOC_AND_FREE);
150 new_key = g_chunk_new (GtkGCKey, key_mem_chunk);
158 gtk_gc_key_destroy (GtkGCKey *key)
160 g_mem_chunk_free (key_mem_chunk, key);
164 gtk_gc_new (gpointer key)
167 GtkGCDrawable *drawable;
173 screen = gdk_colormap_get_screen (keyval->colormap);
175 ht = gtk_gc_get_drawable_ht (screen);
176 drawable = g_hash_table_lookup (ht, &keyval->depth);
179 drawable = g_new (GtkGCDrawable, 1);
180 drawable->depth = keyval->depth;
181 drawable->drawable = gdk_pixmap_new (gdk_screen_get_root_window (screen),
182 1, 1, drawable->depth);
183 g_hash_table_insert (ht, &drawable->depth, drawable);
186 gc = gdk_gc_new_with_values (drawable->drawable, &keyval->values, keyval->mask);
187 gdk_gc_set_colormap (gc, keyval->colormap);
189 return (gpointer) gc;
193 gtk_gc_destroy (gpointer value)
195 g_object_unref (value);
199 gtk_gc_key_hash (gpointer key)
207 if (keyval->mask & GDK_GC_FOREGROUND)
209 hash_val += keyval->values.foreground.pixel;
211 if (keyval->mask & GDK_GC_BACKGROUND)
213 hash_val += keyval->values.background.pixel;
215 if (keyval->mask & GDK_GC_FONT)
217 hash_val += gdk_font_id (keyval->values.font);
219 if (keyval->mask & GDK_GC_FUNCTION)
221 hash_val += (gint) keyval->values.function;
223 if (keyval->mask & GDK_GC_FILL)
225 hash_val += (gint) keyval->values.fill;
227 if (keyval->mask & GDK_GC_TILE)
229 hash_val += (glong) keyval->values.tile;
231 if (keyval->mask & GDK_GC_STIPPLE)
233 hash_val += (glong) keyval->values.stipple;
235 if (keyval->mask & GDK_GC_CLIP_MASK)
237 hash_val += (glong) keyval->values.clip_mask;
239 if (keyval->mask & GDK_GC_SUBWINDOW)
241 hash_val += (gint) keyval->values.subwindow_mode;
243 if (keyval->mask & GDK_GC_TS_X_ORIGIN)
245 hash_val += (gint) keyval->values.ts_x_origin;
247 if (keyval->mask & GDK_GC_TS_Y_ORIGIN)
249 hash_val += (gint) keyval->values.ts_y_origin;
251 if (keyval->mask & GDK_GC_CLIP_X_ORIGIN)
253 hash_val += (gint) keyval->values.clip_x_origin;
255 if (keyval->mask & GDK_GC_CLIP_Y_ORIGIN)
257 hash_val += (gint) keyval->values.clip_y_origin;
259 if (keyval->mask & GDK_GC_EXPOSURES)
261 hash_val += (gint) keyval->values.graphics_exposures;
263 if (keyval->mask & GDK_GC_LINE_WIDTH)
265 hash_val += (gint) keyval->values.line_width;
267 if (keyval->mask & GDK_GC_LINE_STYLE)
269 hash_val += (gint) keyval->values.line_style;
271 if (keyval->mask & GDK_GC_CAP_STYLE)
273 hash_val += (gint) keyval->values.cap_style;
275 if (keyval->mask & GDK_GC_JOIN_STYLE)
277 hash_val += (gint) keyval->values.join_style;
284 gtk_gc_value_hash (gpointer value)
286 return (gulong) value;
290 gtk_gc_key_equal (gpointer a,
295 GdkGCValues *avalues;
296 GdkGCValues *bvalues;
301 avalues = &akey->values;
302 bvalues = &bkey->values;
304 if (akey->mask != bkey->mask)
307 if (akey->depth != bkey->depth)
310 if (akey->colormap != bkey->colormap)
313 if (akey->mask & GDK_GC_FOREGROUND)
315 if (avalues->foreground.pixel != bvalues->foreground.pixel)
318 if (akey->mask & GDK_GC_BACKGROUND)
320 if (avalues->background.pixel != bvalues->background.pixel)
323 if (akey->mask & GDK_GC_FONT)
325 if (!gdk_font_equal (avalues->font, bvalues->font))
328 if (akey->mask & GDK_GC_FUNCTION)
330 if (avalues->function != bvalues->function)
333 if (akey->mask & GDK_GC_FILL)
335 if (avalues->fill != bvalues->fill)
338 if (akey->mask & GDK_GC_TILE)
340 if (avalues->tile != bvalues->tile)
343 if (akey->mask & GDK_GC_STIPPLE)
345 if (avalues->stipple != bvalues->stipple)
348 if (akey->mask & GDK_GC_CLIP_MASK)
350 if (avalues->clip_mask != bvalues->clip_mask)
353 if (akey->mask & GDK_GC_SUBWINDOW)
355 if (avalues->subwindow_mode != bvalues->subwindow_mode)
358 if (akey->mask & GDK_GC_TS_X_ORIGIN)
360 if (avalues->ts_x_origin != bvalues->ts_x_origin)
363 if (akey->mask & GDK_GC_TS_Y_ORIGIN)
365 if (avalues->ts_y_origin != bvalues->ts_y_origin)
368 if (akey->mask & GDK_GC_CLIP_X_ORIGIN)
370 if (avalues->clip_x_origin != bvalues->clip_x_origin)
373 if (akey->mask & GDK_GC_CLIP_Y_ORIGIN)
375 if (avalues->clip_y_origin != bvalues->clip_y_origin)
378 if (akey->mask & GDK_GC_EXPOSURES)
380 if (avalues->graphics_exposures != bvalues->graphics_exposures)
383 if (akey->mask & GDK_GC_LINE_WIDTH)
385 if (avalues->line_width != bvalues->line_width)
388 if (akey->mask & GDK_GC_LINE_STYLE)
390 if (avalues->line_style != bvalues->line_style)
393 if (akey->mask & GDK_GC_CAP_STYLE)
395 if (avalues->cap_style != bvalues->cap_style)
398 if (akey->mask & GDK_GC_JOIN_STYLE)
400 if (avalues->join_style != bvalues->join_style)
408 gtk_gc_drawable_hash (GtkGCDrawable *d)
414 gtk_gc_drawable_equal (GtkGCDrawable *a,
417 return (a->depth == b->depth);
421 #include "gtkaliasdef.c"