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/.
30 typedef struct _GtkGCKey GtkGCKey;
31 typedef struct _GtkGCDrawable GtkGCDrawable;
36 GdkColormap *colormap;
48 static void gtk_gc_init (void);
49 static GtkGCKey* gtk_gc_key_dup (GtkGCKey *key);
50 static void gtk_gc_key_destroy (GtkGCKey *key);
51 static gpointer gtk_gc_new (gpointer key);
52 static void gtk_gc_destroy (gpointer value);
53 static guint gtk_gc_key_hash (gpointer key);
54 static guint gtk_gc_value_hash (gpointer value);
55 static gint gtk_gc_key_equal (gpointer a,
57 static guint gtk_gc_drawable_hash (GtkGCDrawable *d);
58 static gint gtk_gc_drawable_equal (GtkGCDrawable *a,
62 static gint initialize = TRUE;
63 static GCache *gc_cache = NULL;
65 static GMemChunk *key_mem_chunk = NULL;
69 gtk_gc_get (gint depth,
70 GdkColormap *colormap,
72 GdkGCValuesMask values_mask)
81 key.colormap = colormap;
83 key.mask = values_mask;
85 gc = g_cache_insert (gc_cache, &key);
91 gtk_gc_release (GdkGC *gc)
96 g_cache_remove (gc_cache, gc);
100 free_gc_drawable (gpointer data)
102 GtkGCDrawable *drawable = data;
103 g_object_unref (drawable->drawable);
108 gtk_gc_get_drawable_ht (GdkScreen *screen)
110 GHashTable *ht = g_object_get_data (G_OBJECT (screen), "gtk-gc-drawable-ht");
113 ht = g_hash_table_new_full ((GHashFunc) gtk_gc_drawable_hash,
114 (GEqualFunc) gtk_gc_drawable_equal,
115 NULL, free_gc_drawable);
116 g_object_set_data_full (G_OBJECT (screen),
117 "gtk-gc-drawable-ht", ht,
118 (GDestroyNotify)g_hash_table_destroy);
129 gc_cache = g_cache_new ((GCacheNewFunc) gtk_gc_new,
130 (GCacheDestroyFunc) gtk_gc_destroy,
131 (GCacheDupFunc) gtk_gc_key_dup,
132 (GCacheDestroyFunc) gtk_gc_key_destroy,
133 (GHashFunc) gtk_gc_key_hash,
134 (GHashFunc) gtk_gc_value_hash,
135 (GEqualFunc) gtk_gc_key_equal);
139 gtk_gc_key_dup (GtkGCKey *key)
144 key_mem_chunk = g_mem_chunk_new ("key mem chunk", sizeof (GtkGCKey),
145 1024, G_ALLOC_AND_FREE);
147 new_key = g_chunk_new (GtkGCKey, key_mem_chunk);
155 gtk_gc_key_destroy (GtkGCKey *key)
157 g_mem_chunk_free (key_mem_chunk, key);
161 gtk_gc_new (gpointer key)
164 GtkGCDrawable *drawable;
170 screen = gdk_colormap_get_screen (keyval->colormap);
172 ht = gtk_gc_get_drawable_ht (screen);
173 drawable = g_hash_table_lookup (ht, &keyval->depth);
176 drawable = g_new (GtkGCDrawable, 1);
177 drawable->depth = keyval->depth;
178 drawable->drawable = gdk_pixmap_new (gdk_screen_get_root_window (screen),
179 1, 1, drawable->depth);
180 g_hash_table_insert (ht, &drawable->depth, drawable);
183 gc = gdk_gc_new_with_values (drawable->drawable, &keyval->values, keyval->mask);
184 gdk_gc_set_colormap (gc, keyval->colormap);
186 return (gpointer) gc;
190 gtk_gc_destroy (gpointer value)
192 g_object_unref (value);
196 gtk_gc_key_hash (gpointer key)
204 if (keyval->mask & GDK_GC_FOREGROUND)
206 hash_val += keyval->values.foreground.pixel;
208 if (keyval->mask & GDK_GC_BACKGROUND)
210 hash_val += keyval->values.background.pixel;
212 if (keyval->mask & GDK_GC_FONT)
214 hash_val += gdk_font_id (keyval->values.font);
216 if (keyval->mask & GDK_GC_FUNCTION)
218 hash_val += (gint) keyval->values.function;
220 if (keyval->mask & GDK_GC_FILL)
222 hash_val += (gint) keyval->values.fill;
224 if (keyval->mask & GDK_GC_TILE)
226 hash_val += (glong) keyval->values.tile;
228 if (keyval->mask & GDK_GC_STIPPLE)
230 hash_val += (glong) keyval->values.stipple;
232 if (keyval->mask & GDK_GC_CLIP_MASK)
234 hash_val += (glong) keyval->values.clip_mask;
236 if (keyval->mask & GDK_GC_SUBWINDOW)
238 hash_val += (gint) keyval->values.subwindow_mode;
240 if (keyval->mask & GDK_GC_TS_X_ORIGIN)
242 hash_val += (gint) keyval->values.ts_x_origin;
244 if (keyval->mask & GDK_GC_TS_Y_ORIGIN)
246 hash_val += (gint) keyval->values.ts_y_origin;
248 if (keyval->mask & GDK_GC_CLIP_X_ORIGIN)
250 hash_val += (gint) keyval->values.clip_x_origin;
252 if (keyval->mask & GDK_GC_CLIP_Y_ORIGIN)
254 hash_val += (gint) keyval->values.clip_y_origin;
256 if (keyval->mask & GDK_GC_EXPOSURES)
258 hash_val += (gint) keyval->values.graphics_exposures;
260 if (keyval->mask & GDK_GC_LINE_WIDTH)
262 hash_val += (gint) keyval->values.line_width;
264 if (keyval->mask & GDK_GC_LINE_STYLE)
266 hash_val += (gint) keyval->values.line_style;
268 if (keyval->mask & GDK_GC_CAP_STYLE)
270 hash_val += (gint) keyval->values.cap_style;
272 if (keyval->mask & GDK_GC_JOIN_STYLE)
274 hash_val += (gint) keyval->values.join_style;
281 gtk_gc_value_hash (gpointer value)
283 return (gulong) value;
287 gtk_gc_key_equal (gpointer a,
292 GdkGCValues *avalues;
293 GdkGCValues *bvalues;
298 avalues = &akey->values;
299 bvalues = &bkey->values;
301 if (akey->mask != bkey->mask)
304 if (akey->depth != bkey->depth)
307 if (akey->colormap != bkey->colormap)
310 if (akey->mask & GDK_GC_FOREGROUND)
312 if (avalues->foreground.pixel != bvalues->foreground.pixel)
315 if (akey->mask & GDK_GC_BACKGROUND)
317 if (avalues->background.pixel != bvalues->background.pixel)
320 if (akey->mask & GDK_GC_FONT)
322 if (!gdk_font_equal (avalues->font, bvalues->font))
325 if (akey->mask & GDK_GC_FUNCTION)
327 if (avalues->function != bvalues->function)
330 if (akey->mask & GDK_GC_FILL)
332 if (avalues->fill != bvalues->fill)
335 if (akey->mask & GDK_GC_TILE)
337 if (avalues->tile != bvalues->tile)
340 if (akey->mask & GDK_GC_STIPPLE)
342 if (avalues->stipple != bvalues->stipple)
345 if (akey->mask & GDK_GC_CLIP_MASK)
347 if (avalues->clip_mask != bvalues->clip_mask)
350 if (akey->mask & GDK_GC_SUBWINDOW)
352 if (avalues->subwindow_mode != bvalues->subwindow_mode)
355 if (akey->mask & GDK_GC_TS_X_ORIGIN)
357 if (avalues->ts_x_origin != bvalues->ts_x_origin)
360 if (akey->mask & GDK_GC_TS_Y_ORIGIN)
362 if (avalues->ts_y_origin != bvalues->ts_y_origin)
365 if (akey->mask & GDK_GC_CLIP_X_ORIGIN)
367 if (avalues->clip_x_origin != bvalues->clip_x_origin)
370 if (akey->mask & GDK_GC_CLIP_Y_ORIGIN)
372 if (avalues->clip_y_origin != bvalues->clip_y_origin)
375 if (akey->mask & GDK_GC_EXPOSURES)
377 if (avalues->graphics_exposures != bvalues->graphics_exposures)
380 if (akey->mask & GDK_GC_LINE_WIDTH)
382 if (avalues->line_width != bvalues->line_width)
385 if (akey->mask & GDK_GC_LINE_STYLE)
387 if (avalues->line_style != bvalues->line_style)
390 if (akey->mask & GDK_GC_CAP_STYLE)
392 if (avalues->cap_style != bvalues->cap_style)
395 if (akey->mask & GDK_GC_JOIN_STYLE)
397 if (avalues->join_style != bvalues->join_style)
405 gtk_gc_drawable_hash (GtkGCDrawable *d)
411 gtk_gc_drawable_equal (GtkGCDrawable *a,
414 return (a->depth == b->depth);