gtk2/gdk/linux-fb/gdkvisual-fb.c
Owen Taylor 7ddfec4f80 Patch from Eric Warmonhoven to get linux-fb compiling with multihead
Tue Sep 10 11:11:09 2002  Owen Taylor  <otaylor@redhat.com>
        * gdk/linux-fb/*: Patch from Eric Warmonhoven to
        get linux-fb compiling with multihead changes.
2002-09-10 15:19:13 +00:00

229 lines
5.8 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, 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/.
*/
#include "gdkvisual.h"
#include "gdkprivate-fb.h"
#include "gdkinternals.h"
#include <sys/ioctl.h>
static GdkVisual *system_visual = NULL;
static void
gdk_visual_finalize (GObject *object)
{
g_error ("A GdkVisual object was finalized. This should not happen");
}
static void
gdk_visual_class_init (GObjectClass *class)
{
class->finalize = gdk_visual_finalize;
}
GType
gdk_visual_get_type (void)
{
static GType object_type = 0;
if (!object_type)
{
static const GTypeInfo object_info =
{
sizeof (GdkVisualClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gdk_visual_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GdkVisual),
0, /* n_preallocs */
(GInstanceInitFunc) NULL,
};
object_type = g_type_register_static (G_TYPE_OBJECT,
"GdkVisual",
&object_info, 0);
}
return object_type;
}
void
_gdk_visual_init (void)
{
system_visual = g_object_new (GDK_TYPE_VISUAL, NULL);
system_visual->depth = system_visual->bits_per_rgb = gdk_display->modeinfo.bits_per_pixel;
system_visual->byte_order = GDK_LSB_FIRST;
system_visual->colormap_size = 0;
switch (gdk_display->sinfo.visual)
{
case FB_VISUAL_PSEUDOCOLOR:
system_visual->colormap_size = 1 << gdk_display->modeinfo.bits_per_pixel;
system_visual->type = GDK_VISUAL_PSEUDO_COLOR;
break;
case FB_VISUAL_DIRECTCOLOR:
case FB_VISUAL_TRUECOLOR:
system_visual->type = GDK_VISUAL_TRUE_COLOR;
system_visual->red_prec = gdk_display->modeinfo.red.length;
system_visual->red_shift = gdk_display->modeinfo.red.offset;
system_visual->red_mask = ((1 << (system_visual->red_prec)) - 1) << system_visual->red_shift;
system_visual->green_prec = gdk_display->modeinfo.green.length;
system_visual->green_shift = gdk_display->modeinfo.green.offset;
system_visual->green_mask = ((1 << (system_visual->green_prec)) - 1) << system_visual->green_shift;
system_visual->blue_prec = gdk_display->modeinfo.blue.length;
system_visual->blue_shift = gdk_display->modeinfo.blue.offset;
system_visual->blue_mask = ((1 << (system_visual->blue_prec)) - 1) << system_visual->blue_shift;
if (gdk_display->sinfo.visual == FB_VISUAL_DIRECTCOLOR)
{
guint16 red[256], green[256], blue[256];
struct fb_cmap fbc = {0,0};
int size, i;
/* Load the colormap to ramps here, as they might be initialized to
some other garbage */
g_warning ("Directcolor visual, not very well tested\n");
fbc.red = red;
fbc.green = green;
fbc.blue = blue;
size = 1 << system_visual->red_prec;
for (i = 0; i < size; i++)
red[i] = i * 65535 / (size - 1);
size = 1 << system_visual->green_prec;
fbc.len = size;
for (i = 0; i < size; i++)
green[i] = i * 65535 / (size - 1);
size = 1 << system_visual->blue_prec;
for (i = 0; i < size; i++)
blue[i] = i * 65535 / (size - 1);
ioctl (gdk_display->fb_fd, FBIOPUTCMAP, &fbc);
}
break;
case FB_VISUAL_STATIC_PSEUDOCOLOR:
system_visual->type = GDK_VISUAL_STATIC_COLOR;
system_visual->colormap_size = 1 << gdk_display->modeinfo.bits_per_pixel;
break;
default:
g_assert_not_reached ();
break;
}
}
gint
gdk_visual_get_best_depth (void)
{
return system_visual->depth;
}
GdkVisualType
gdk_visual_get_best_type (void)
{
return system_visual->type;
}
GdkVisual*
gdk_screen_get_system_visual (GdkScreen *screen)
{
return system_visual;
}
GdkVisual*
gdk_visual_get_best (void)
{
return system_visual;
}
GdkVisual*
gdk_visual_get_best_with_depth (gint depth)
{
if (system_visual->depth != depth)
return NULL;
return system_visual;
}
GdkVisual*
gdk_visual_get_best_with_type (GdkVisualType visual_type)
{
if (system_visual->type != visual_type)
return NULL;
return system_visual;
}
GdkVisual*
gdk_visual_get_best_with_both (gint depth,
GdkVisualType visual_type)
{
if (system_visual->depth != depth)
return NULL;
if (system_visual->type != visual_type)
return NULL;
return system_visual;
}
void
gdk_query_depths (gint **depths,
gint *count)
{
*count = 1;
*depths = &system_visual->depth;
}
void
gdk_query_visual_types (GdkVisualType **visual_types,
gint *count)
{
*count = 1;
*visual_types = &system_visual->type;
}
GList*
gdk_screen_list_visuals (GdkScreen *screen)
{
return g_list_append (NULL, gdk_visual_get_system ());
}
GdkScreen *
gdk_visual_get_screen (GdkVisual *visual)
{
g_return_val_if_fail (GDK_IS_VISUAL (visual), NULL);
return gdk_screen_get_default ();
}