forked from AuroraMiddleware/gtk
5ad618cb95
This saves memory for every widget (maximum 48 bytes per widget) at a cost of a few duplicated codepaths in the size request cache.
105 lines
4.1 KiB
C
105 lines
4.1 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 Lesser 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#ifndef __GTK_SIZE_REQUEST_CACHE_PRIVATE_H__
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#define __GTK_SIZE_REQUEST_CACHE_PRIVATE_H__
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#include <glib.h>
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#include <gtk/gtkenums.h>
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G_BEGIN_DECLS
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/* Cache as many ranges of height-for-width
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* (or width-for-height) as can be rational
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* for a said widget to have, if a label can
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* only wrap to 3 lines, only 3 caches will
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* ever be allocated for it.
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*/
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#define GTK_SIZE_REQUEST_CACHED_SIZES (5)
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typedef struct {
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gint minimum_size;
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gint natural_size;
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} CachedSizeX;
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typedef struct {
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gint minimum_size;
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gint natural_size;
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gint minimum_baseline;
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gint natural_baseline;
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} CachedSizeY;
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typedef struct
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{
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gint lower_for_size; /* The minimum for_size with the same result */
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gint upper_for_size; /* The maximum for_size with the same result */
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CachedSizeX cached_size;
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} SizeRequestX;
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typedef struct
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{
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gint lower_for_size; /* The minimum for_size with the same result */
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gint upper_for_size; /* The maximum for_size with the same result */
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CachedSizeY cached_size;
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} SizeRequestY;
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typedef struct {
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SizeRequestX **requests_x;
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SizeRequestY **requests_y;
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CachedSizeX cached_size_x;
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CachedSizeY cached_size_y;
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GtkSizeRequestMode request_mode : 3;
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guint request_mode_valid : 1;
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struct {
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guint n_cached_requests : 3;
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guint last_cached_request : 3;
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guint cached_size_valid : 1;
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} flags[2];
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} SizeRequestCache;
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void _gtk_size_request_cache_init (SizeRequestCache *cache);
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void _gtk_size_request_cache_free (SizeRequestCache *cache);
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void _gtk_size_request_cache_clear (SizeRequestCache *cache);
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void _gtk_size_request_cache_commit (SizeRequestCache *cache,
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GtkOrientation orientation,
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gint for_size,
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gint minimum_size,
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gint natural_size,
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gint minimum_baseline,
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gint natural_baseline);
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gboolean _gtk_size_request_cache_lookup (SizeRequestCache *cache,
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GtkOrientation orientation,
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gint for_size,
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gint *minimum,
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gint *natural,
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gint *minimum_baseline,
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gint *natural_baseline);
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G_END_DECLS
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#endif /* __GTK_SIZE_REQUEST_CACHE_PRIVATE_H__ */
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