gtk/gdk/broadway/gdkvisual-broadway.c
2012-02-27 17:06:11 +00:00

289 lines
7.4 KiB
C

/* GDK - The GIMP Drawing Kit
* 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, see <http://www.gnu.org/licenses/>.
*/
/*
* 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/.
*/
#include "config.h"
#include "gdkvisualprivate.h"
#include "gdkprivate-broadway.h"
#include "gdkscreen-broadway.h"
#include "gdkinternals.h"
struct _GdkBroadwayVisual
{
GdkVisual visual;
};
struct _GdkBroadwayVisualClass
{
GObjectClass parent_class;
};
static void gdk_visual_decompose_mask (gulong mask,
gint *shift,
gint *prec);
G_DEFINE_TYPE (GdkBroadwayVisual, gdk_broadway_visual, GDK_TYPE_VISUAL)
static void
gdk_broadway_visual_finalize (GObject *object)
{
G_OBJECT_CLASS (gdk_broadway_visual_parent_class)->finalize (object);
}
static void
gdk_broadway_visual_class_init (GdkBroadwayVisualClass *visual_class)
{
GObjectClass *object_class = G_OBJECT_CLASS (visual_class);
object_class->finalize = gdk_broadway_visual_finalize;
}
static void
gdk_broadway_visual_init (GdkBroadwayVisual *visual)
{
}
void
_gdk_broadway_screen_init_visuals (GdkScreen *screen)
{
GdkBroadwayScreen *broadway_screen;
GdkVisual **visuals;
int nvisuals;
g_return_if_fail (GDK_IS_SCREEN (screen));
broadway_screen = GDK_BROADWAY_SCREEN (screen);
nvisuals = 2;
visuals = g_new (GdkVisual *, nvisuals);
visuals[0] = g_object_new (GDK_TYPE_BROADWAY_VISUAL, NULL);
visuals[0]->screen = screen;
visuals[0]->type = GDK_VISUAL_TRUE_COLOR;
visuals[0]->depth = 32;
visuals[0]->byte_order = (G_BYTE_ORDER == G_LITTLE_ENDIAN) ? GDK_LSB_FIRST : GDK_MSB_FIRST;
visuals[0]->red_mask = 0xff0000;
visuals[0]->green_mask = 0xff00;
visuals[0]->blue_mask = 0xff;
visuals[0]->colormap_size = 256;
visuals[0]->bits_per_rgb = 8;
gdk_visual_decompose_mask (visuals[0]->red_mask,
&visuals[0]->red_shift,
&visuals[0]->red_prec);
gdk_visual_decompose_mask (visuals[0]->green_mask,
&visuals[0]->green_shift,
&visuals[0]->green_prec);
gdk_visual_decompose_mask (visuals[0]->blue_mask,
&visuals[0]->blue_shift,
&visuals[0]->blue_prec);
visuals[1] = g_object_new (GDK_TYPE_BROADWAY_VISUAL, NULL);
visuals[1]->screen = screen;
visuals[1]->type = GDK_VISUAL_TRUE_COLOR;
visuals[1]->depth = 24;
visuals[1]->byte_order = (G_BYTE_ORDER == G_LITTLE_ENDIAN) ? GDK_LSB_FIRST : GDK_MSB_FIRST;
visuals[1]->red_mask = 0xff0000;
visuals[1]->green_mask = 0xff00;
visuals[1]->blue_mask = 0xff;
visuals[1]->colormap_size = 256;
visuals[1]->bits_per_rgb = 8;
gdk_visual_decompose_mask (visuals[1]->red_mask,
&visuals[1]->red_shift,
&visuals[1]->red_prec);
gdk_visual_decompose_mask (visuals[1]->green_mask,
&visuals[1]->green_shift,
&visuals[1]->green_prec);
gdk_visual_decompose_mask (visuals[1]->blue_mask,
&visuals[1]->blue_shift,
&visuals[1]->blue_prec);
broadway_screen->system_visual = visuals[1];
broadway_screen->rgba_visual = visuals[0];
broadway_screen->navailable_depths = 2;
broadway_screen->available_depths[0] = 32;
broadway_screen->available_depths[1] = 24;
broadway_screen->navailable_types = 1;
broadway_screen->available_types[0] = GDK_VISUAL_TRUE_COLOR;
broadway_screen->visuals = visuals;
broadway_screen->nvisuals = nvisuals;
}
gint
_gdk_broadway_screen_visual_get_best_depth (GdkScreen * screen)
{
return GDK_BROADWAY_SCREEN (screen)->available_depths[0];
}
GdkVisualType
_gdk_broadway_screen_visual_get_best_type (GdkScreen * screen)
{
return GDK_BROADWAY_SCREEN (screen)->available_types[0];
}
GdkVisual *
_gdk_broadway_screen_get_system_visual (GdkScreen * screen)
{
g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
return ((GdkVisual *) GDK_BROADWAY_SCREEN (screen)->system_visual);
}
GdkVisual*
_gdk_broadway_screen_visual_get_best (GdkScreen * screen)
{
GdkBroadwayScreen *broadway_screen = GDK_BROADWAY_SCREEN (screen);
return (GdkVisual *)broadway_screen->visuals[0];
}
GdkVisual*
_gdk_broadway_screen_visual_get_best_with_depth (GdkScreen * screen,
gint depth)
{
GdkBroadwayScreen *broadway_screen = GDK_BROADWAY_SCREEN (screen);
GdkVisual *return_val;
int i;
return_val = NULL;
for (i = 0; i < broadway_screen->nvisuals; i++)
if (depth == broadway_screen->visuals[i]->depth)
{
return_val = (GdkVisual *) broadway_screen->visuals[i];
break;
}
return return_val;
}
GdkVisual*
_gdk_broadway_screen_visual_get_best_with_type (GdkScreen * screen,
GdkVisualType visual_type)
{
GdkBroadwayScreen *broadway_screen = GDK_BROADWAY_SCREEN (screen);
GdkVisual *return_val;
int i;
return_val = NULL;
for (i = 0; i < broadway_screen->nvisuals; i++)
if (visual_type == broadway_screen->visuals[i]->type)
{
return_val = (GdkVisual *) broadway_screen->visuals[i];
break;
}
return return_val;
}
GdkVisual*
_gdk_broadway_screen_visual_get_best_with_both (GdkScreen * screen,
gint depth,
GdkVisualType visual_type)
{
GdkBroadwayScreen *broadway_screen = GDK_BROADWAY_SCREEN (screen);
GdkVisual *return_val;
int i;
return_val = NULL;
for (i = 0; i < broadway_screen->nvisuals; i++)
if ((depth == broadway_screen->visuals[i]->depth) &&
(visual_type == broadway_screen->visuals[i]->type))
{
return_val = (GdkVisual *) broadway_screen->visuals[i];
break;
}
return return_val;
}
void
_gdk_broadway_screen_query_depths (GdkScreen * screen,
gint **depths,
gint *count)
{
GdkBroadwayScreen *broadway_screen = GDK_BROADWAY_SCREEN (screen);
*count = broadway_screen->navailable_depths;
*depths = broadway_screen->available_depths;
}
void
_gdk_broadway_screen_query_visual_types (GdkScreen * screen,
GdkVisualType **visual_types,
gint *count)
{
GdkBroadwayScreen *broadway_screen = GDK_BROADWAY_SCREEN (screen);
*count = broadway_screen->navailable_types;
*visual_types = broadway_screen->available_types;
}
GList *
_gdk_broadway_screen_list_visuals (GdkScreen *screen)
{
GList *list;
GdkBroadwayScreen *broadway_screen;
guint i;
g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
broadway_screen = GDK_BROADWAY_SCREEN (screen);
list = NULL;
for (i = 0; i < broadway_screen->nvisuals; ++i)
list = g_list_append (list, broadway_screen->visuals[i]);
return list;
}
static void
gdk_visual_decompose_mask (gulong mask,
gint *shift,
gint *prec)
{
*shift = 0;
*prec = 0;
if (mask == 0)
{
g_warning ("Mask is 0 in visual. Server bug ?");
return;
}
while (!(mask & 0x1))
{
(*shift)++;
mask >>= 1;
}
while (mask & 0x1)
{
(*prec)++;
mask >>= 1;
}
}