383 lines
8.5 KiB
C
383 lines
8.5 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "gtkgc.h"
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typedef struct _GtkGCKey GtkGCKey;
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typedef struct _GtkGCDrawable GtkGCDrawable;
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struct _GtkGCKey
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{
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gint depth;
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GdkColormap *colormap;
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GdkGCValues values;
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GdkGCValuesMask mask;
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};
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struct _GtkGCDrawable
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{
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gint depth;
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GdkPixmap *drawable;
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};
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static void gtk_gc_init (void);
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static GtkGCKey* gtk_gc_key_dup (GtkGCKey *key);
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static void gtk_gc_key_destroy (GtkGCKey *key);
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static gpointer gtk_gc_new (gpointer key);
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static void gtk_gc_destroy (gpointer value);
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static guint gtk_gc_key_hash (gpointer key);
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static guint gtk_gc_value_hash (gpointer value);
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static gint gtk_gc_key_compare (gpointer a,
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gpointer b);
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static guint gtk_gc_drawable_hash (GtkGCDrawable *d);
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static gint gtk_gc_drawable_compare (GtkGCDrawable *a,
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GtkGCDrawable *b);
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static gint initialize = TRUE;
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static GCache *gc_cache = NULL;
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static GHashTable *gc_drawable_ht = NULL;
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static GMemChunk *key_mem_chunk = NULL;
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GdkGC*
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gtk_gc_get (gint depth,
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GdkColormap *colormap,
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GdkGCValues *values,
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GdkGCValuesMask values_mask)
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{
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GtkGCKey key;
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GdkGC *gc;
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if (initialize)
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gtk_gc_init ();
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key.depth = depth;
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key.colormap = colormap;
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key.values = *values;
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key.mask = values_mask;
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gc = g_cache_insert (gc_cache, &key);
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return gc;
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}
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void
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gtk_gc_release (GdkGC *gc)
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{
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if (initialize)
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gtk_gc_init ();
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g_cache_remove (gc_cache, gc);
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}
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static void
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gtk_gc_init ()
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{
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initialize = FALSE;
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gc_cache = g_cache_new ((GCacheNewFunc) gtk_gc_new,
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(GCacheDestroyFunc) gtk_gc_destroy,
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(GCacheDupFunc) gtk_gc_key_dup,
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(GCacheDestroyFunc) gtk_gc_key_destroy,
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(GHashFunc) gtk_gc_key_hash,
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(GHashFunc) gtk_gc_value_hash,
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(GCompareFunc) gtk_gc_key_compare);
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gc_drawable_ht = g_hash_table_new ((GHashFunc) gtk_gc_drawable_hash,
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(GCompareFunc) gtk_gc_drawable_compare);
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}
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static GtkGCKey*
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gtk_gc_key_dup (GtkGCKey *key)
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{
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GtkGCKey *new_key;
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if (!key_mem_chunk)
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key_mem_chunk = g_mem_chunk_new ("key mem chunk", sizeof (GtkGCKey),
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1024, G_ALLOC_AND_FREE);
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new_key = g_chunk_new (GtkGCKey, key_mem_chunk);
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*new_key = *key;
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return new_key;
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}
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static void
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gtk_gc_key_destroy (GtkGCKey *key)
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{
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g_mem_chunk_free (key_mem_chunk, key);
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}
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static gpointer
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gtk_gc_new (gpointer key)
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{
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GtkGCKey *keyval;
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GtkGCDrawable *drawable;
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GdkGC *gc;
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keyval = key;
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drawable = g_hash_table_lookup (gc_drawable_ht, &keyval->depth);
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if (!drawable)
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{
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drawable = g_new (GtkGCDrawable, 1);
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drawable->depth = keyval->depth;
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drawable->drawable = gdk_pixmap_new (NULL, 1, 1, drawable->depth);
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g_hash_table_insert (gc_drawable_ht, &drawable->depth, drawable);
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}
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gc = gdk_gc_new_with_values (drawable->drawable, &keyval->values, keyval->mask);
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return (gpointer) gc;
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}
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static void
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gtk_gc_destroy (gpointer value)
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{
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gdk_gc_destroy ((GdkGC*) value);
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}
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static guint
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gtk_gc_key_hash (gpointer key)
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{
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GtkGCKey *keyval;
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guint hash_val;
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keyval = key;
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hash_val = 0;
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if (keyval->mask & GDK_GC_FOREGROUND)
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{
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hash_val += keyval->values.foreground.pixel;
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}
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if (keyval->mask & GDK_GC_BACKGROUND)
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{
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hash_val += keyval->values.background.pixel;
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}
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if (keyval->mask & GDK_GC_FONT)
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{
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hash_val += gdk_font_id (keyval->values.font);
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}
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if (keyval->mask & GDK_GC_FUNCTION)
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{
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hash_val += (gint) keyval->values.function;
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}
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if (keyval->mask & GDK_GC_FILL)
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{
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hash_val += (gint) keyval->values.fill;
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}
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if (keyval->mask & GDK_GC_TILE)
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{
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hash_val += (glong) keyval->values.tile;
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}
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if (keyval->mask & GDK_GC_STIPPLE)
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{
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hash_val += (glong) keyval->values.stipple;
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}
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if (keyval->mask & GDK_GC_CLIP_MASK)
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{
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hash_val += (glong) keyval->values.clip_mask;
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}
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if (keyval->mask & GDK_GC_SUBWINDOW)
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{
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hash_val += (gint) keyval->values.subwindow_mode;
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}
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if (keyval->mask & GDK_GC_TS_X_ORIGIN)
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{
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hash_val += (gint) keyval->values.ts_x_origin;
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}
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if (keyval->mask & GDK_GC_TS_Y_ORIGIN)
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{
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hash_val += (gint) keyval->values.ts_y_origin;
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}
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if (keyval->mask & GDK_GC_CLIP_X_ORIGIN)
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{
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hash_val += (gint) keyval->values.clip_x_origin;
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}
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if (keyval->mask & GDK_GC_CLIP_Y_ORIGIN)
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{
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hash_val += (gint) keyval->values.clip_y_origin;
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}
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if (keyval->mask & GDK_GC_EXPOSURES)
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{
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hash_val += (gint) keyval->values.graphics_exposures;
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}
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if (keyval->mask & GDK_GC_LINE_WIDTH)
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{
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hash_val += (gint) keyval->values.line_width;
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}
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if (keyval->mask & GDK_GC_LINE_STYLE)
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{
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hash_val += (gint) keyval->values.line_style;
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}
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if (keyval->mask & GDK_GC_CAP_STYLE)
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{
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hash_val += (gint) keyval->values.cap_style;
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}
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if (keyval->mask & GDK_GC_JOIN_STYLE)
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{
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hash_val += (gint) keyval->values.join_style;
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}
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return hash_val;
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}
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static guint
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gtk_gc_value_hash (gpointer value)
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{
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return (gulong) value;
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}
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static gint
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gtk_gc_key_compare (gpointer a,
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gpointer b)
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{
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GtkGCKey *akey;
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GtkGCKey *bkey;
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GdkGCValues *avalues;
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GdkGCValues *bvalues;
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akey = a;
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bkey = b;
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avalues = &akey->values;
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bvalues = &bkey->values;
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if (akey->mask != bkey->mask)
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return FALSE;
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if (akey->depth != bkey->depth)
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return FALSE;
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if (akey->colormap != bkey->colormap)
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return FALSE;
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if (akey->mask & GDK_GC_FOREGROUND)
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{
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if (avalues->foreground.pixel != bvalues->foreground.pixel)
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return FALSE;
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}
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if (akey->mask & GDK_GC_BACKGROUND)
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{
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if (avalues->background.pixel != bvalues->background.pixel)
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return FALSE;
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}
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if (akey->mask & GDK_GC_FONT)
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{
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if (!gdk_font_equal (avalues->font, bvalues->font))
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return FALSE;
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}
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if (akey->mask & GDK_GC_FUNCTION)
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{
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if (avalues->function != bvalues->function)
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return FALSE;
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}
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if (akey->mask & GDK_GC_FILL)
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{
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if (avalues->fill != bvalues->fill)
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return FALSE;
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}
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if (akey->mask & GDK_GC_TILE)
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{
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if (avalues->tile != bvalues->tile)
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return FALSE;
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}
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if (akey->mask & GDK_GC_STIPPLE)
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{
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if (avalues->stipple != bvalues->stipple)
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return FALSE;
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}
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if (akey->mask & GDK_GC_CLIP_MASK)
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{
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if (avalues->clip_mask != bvalues->clip_mask)
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return FALSE;
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}
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if (akey->mask & GDK_GC_SUBWINDOW)
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{
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if (avalues->subwindow_mode != bvalues->subwindow_mode)
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return FALSE;
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}
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if (akey->mask & GDK_GC_TS_X_ORIGIN)
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{
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if (avalues->ts_x_origin != bvalues->ts_x_origin)
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return FALSE;
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}
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if (akey->mask & GDK_GC_TS_Y_ORIGIN)
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{
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if (avalues->ts_y_origin != bvalues->ts_y_origin)
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return FALSE;
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}
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if (akey->mask & GDK_GC_CLIP_X_ORIGIN)
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{
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if (avalues->clip_x_origin != bvalues->clip_x_origin)
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return FALSE;
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}
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if (akey->mask & GDK_GC_CLIP_Y_ORIGIN)
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{
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if (avalues->clip_y_origin != bvalues->clip_y_origin)
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return FALSE;
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}
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if (akey->mask & GDK_GC_EXPOSURES)
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{
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if (avalues->graphics_exposures != bvalues->graphics_exposures)
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return FALSE;
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}
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if (akey->mask & GDK_GC_LINE_WIDTH)
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{
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if (avalues->line_width != bvalues->line_width)
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return FALSE;
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}
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if (akey->mask & GDK_GC_LINE_STYLE)
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{
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if (avalues->line_style != bvalues->line_style)
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return FALSE;
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}
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if (akey->mask & GDK_GC_CAP_STYLE)
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{
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if (avalues->cap_style != bvalues->cap_style)
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return FALSE;
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}
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if (akey->mask & GDK_GC_JOIN_STYLE)
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{
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if (avalues->join_style != bvalues->join_style)
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return FALSE;
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}
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return TRUE;
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}
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static guint
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gtk_gc_drawable_hash (GtkGCDrawable *d)
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{
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return d->depth;
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}
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static gint
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gtk_gc_drawable_compare (GtkGCDrawable *a,
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GtkGCDrawable *b)
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{
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return (a->depth == b->depth);
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}
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