gtk2/gtk/gtkwidgetprivate.h
Tristan Van Berkom 38b5c8cf45 Cache heights-for-range-of-widths instead of height for every width.
This patch optimizes window resizes by assuming that if a widget
has the same height at a width of 50 as with a width of 150, the
height for width 100 will also be the same.

The patch also further optimizes the cache allocator, now there
are 2 pointer arrays of up to a maximum of 5 requests, the arrays
will only be allocated if a request is ever made in that orientation
and the array will be sparse until each request is made (i.e. if a
label can only wrap to 3 lines, there will only be 3 out of a
possible 5 SizeRequest structures allocated to cache it).
2011-03-25 18:42:08 +09:00

121 lines
5.0 KiB
C

/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#ifndef __GTK_WIDGET_PRIVATE_H__
#define __GTK_WIDGET_PRIVATE_H__
G_BEGIN_DECLS
/* Cache as many ranges of height-for-width
* (or width-for-height) as can be rational
* for a said widget to have, if a label can
* only wrap to 3 lines, only 3 caches will
* ever be allocated for it.
*/
#define GTK_SIZE_REQUEST_CACHED_SIZES (5)
typedef struct {
gint minimum_size;
gint natural_size;
} CachedSize;
typedef struct
{
gint lower_for_size; /* The minimum for_size with the same result */
gint upper_for_size; /* The maximum for_size with the same result */
CachedSize cached_size;
} SizeRequest;
typedef struct {
SizeRequest **widths;
SizeRequest **heights;
CachedSize cached_width;
CachedSize cached_height;
guint cached_widths : 3;
guint cached_heights : 3;
guint last_cached_width : 3;
guint last_cached_height : 3;
guint cached_base_width : 1;
guint cached_base_height : 1;
} SizeRequestCache;
void _gtk_widget_set_visible_flag (GtkWidget *widget,
gboolean visible);
gboolean _gtk_widget_get_resize_pending (GtkWidget *widget);
void _gtk_widget_set_resize_pending (GtkWidget *widget,
gboolean resize_pending);
gboolean _gtk_widget_get_in_reparent (GtkWidget *widget);
void _gtk_widget_set_in_reparent (GtkWidget *widget,
gboolean in_reparent);
gboolean _gtk_widget_get_anchored (GtkWidget *widget);
void _gtk_widget_set_anchored (GtkWidget *widget,
gboolean anchored);
gboolean _gtk_widget_get_shadowed (GtkWidget *widget);
void _gtk_widget_set_shadowed (GtkWidget *widget,
gboolean shadowed);
gboolean _gtk_widget_get_alloc_needed (GtkWidget *widget);
void _gtk_widget_set_alloc_needed (GtkWidget *widget,
gboolean alloc_needed);
gboolean _gtk_widget_get_width_request_needed (GtkWidget *widget);
void _gtk_widget_set_width_request_needed (GtkWidget *widget,
gboolean width_request_needed);
gboolean _gtk_widget_get_height_request_needed (GtkWidget *widget);
void _gtk_widget_set_height_request_needed (GtkWidget *widget,
gboolean height_request_needed);
gboolean _gtk_widget_get_sizegroup_visited (GtkWidget *widget);
void _gtk_widget_set_sizegroup_visited (GtkWidget *widget,
gboolean visited);
gboolean _gtk_widget_get_sizegroup_bumping (GtkWidget *widget);
void _gtk_widget_set_sizegroup_bumping (GtkWidget *widget,
gboolean bumping);
void _gtk_widget_add_sizegroup (GtkWidget *widget,
gpointer group);
void _gtk_widget_remove_sizegroup (GtkWidget *widget,
gpointer group);
GSList *_gtk_widget_get_sizegroups (GtkWidget *widget);
void _gtk_widget_override_size_request (GtkWidget *widget,
int width,
int height,
int *old_width,
int *old_height);
void _gtk_widget_restore_size_request (GtkWidget *widget,
int old_width,
int old_height);
gboolean _gtk_widget_get_translation_to_window (GtkWidget *widget,
GdkWindow *window,
int *x,
int *y);
void _gtk_widget_free_cached_sizes (GtkWidget *widget);
G_END_DECLS
#endif /* __GTK_WIDGET_PRIVATE_H__ */