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/* 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 "gdkprivate-x11.h"
#include "gdkscreen-x11.h"
#include "gdkvisual-x11.h"
#include <X11/Xlib.h>
#include <X11/Xutil.h>
struct _GdkX11VisualClass
{
GObjectClass parent_class;
};
G_DEFINE_TYPE (GdkX11Visual, gdk_x11_visual, G_TYPE_OBJECT)
static void
gdk_x11_visual_init (GdkX11Visual *x11_visual)
{
}
static void
gdk_x11_visual_class_init (GdkX11VisualClass *class)
{
}
void
_gdk_x11_screen_init_visuals (GdkX11Screen *x11_screen,
gboolean setup_display)
{
static const int possible_depths[8] = { 32, 30, 24, 16, 15, 8, 4, 1 };
static const GdkVisualType possible_types[6] =
{
GDK_VISUAL_DIRECT_COLOR,
GDK_VISUAL_TRUE_COLOR,
GDK_VISUAL_PSEUDO_COLOR,
GDK_VISUAL_STATIC_COLOR,
GDK_VISUAL_GRAYSCALE,
GDK_VISUAL_STATIC_GRAY
};
XVisualInfo *visual_list;
XVisualInfo visual_template;
GdkX11Visual *temp_visual;
Visual *default_xvisual;
GdkX11Visual **visuals;
int nxvisuals;
int nvisuals;
int i, j;
nxvisuals = 0;
visual_template.screen = x11_screen->screen_num;
visual_list = XGetVisualInfo (x11_screen->xdisplay, VisualScreenMask, &visual_template, &nxvisuals);
visuals = g_new (GdkX11Visual *, nxvisuals);
for (i = 0; i < nxvisuals; i++)
visuals[i] = g_object_new (GDK_TYPE_X11_VISUAL, NULL);
default_xvisual = DefaultVisual (x11_screen->xdisplay, x11_screen->screen_num);
nvisuals = 0;
for (i = 0; i < nxvisuals; i++)
{
if (visual_list[i].depth >= 1)
{
#ifdef __cplusplus
switch (visual_list[i].c_class)
#else /* __cplusplus */
switch (visual_list[i].class)
#endif /* __cplusplus */
{
case StaticGray:
visuals[nvisuals]->type = GDK_VISUAL_STATIC_GRAY;
break;
case GrayScale:
visuals[nvisuals]->type = GDK_VISUAL_GRAYSCALE;
break;
case StaticColor:
visuals[nvisuals]->type = GDK_VISUAL_STATIC_COLOR;
break;
case PseudoColor:
visuals[nvisuals]->type = GDK_VISUAL_PSEUDO_COLOR;
break;
case TrueColor:
visuals[nvisuals]->type = GDK_VISUAL_TRUE_COLOR;
break;
case DirectColor:
visuals[nvisuals]->type = GDK_VISUAL_DIRECT_COLOR;
break;
default:
g_warn_if_reached ();
break;
}
visuals[nvisuals]->depth = visual_list[i].depth;
visuals[nvisuals]->byte_order =
(ImageByteOrder(x11_screen->xdisplay) == LSBFirst) ?
GDK_LSB_FIRST : GDK_MSB_FIRST;
visuals[nvisuals]->red_mask = visual_list[i].red_mask;
visuals[nvisuals]->green_mask = visual_list[i].green_mask;
visuals[nvisuals]->blue_mask = visual_list[i].blue_mask;
visuals[nvisuals]->colormap_size = visual_list[i].colormap_size;
visuals[nvisuals]->bits_per_rgb = visual_list[i].bits_per_rgb;
GDK_X11_VISUAL (visuals[nvisuals])->xvisual = visual_list[i].visual;
if ((visuals[nvisuals]->type != GDK_VISUAL_TRUE_COLOR) &&
(visuals[nvisuals]->type != GDK_VISUAL_DIRECT_COLOR))
{
visuals[nvisuals]->red_mask = 0;
visuals[nvisuals]->green_mask = 0;
visuals[nvisuals]->blue_mask = 0;
}
nvisuals += 1;
}
}
if (visual_list)
XFree (visual_list);
for (i = 0; i < nvisuals; i++)
{
for (j = i+1; j < nvisuals; j++)
{
if (visuals[j]->depth >= visuals[i]->depth)
{
if ((visuals[j]->depth == 8) && (visuals[i]->depth == 8))
{
if (visuals[j]->type == GDK_VISUAL_PSEUDO_COLOR)
{
temp_visual = visuals[j];
visuals[j] = visuals[i];
visuals[i] = temp_visual;
}
else if ((visuals[i]->type != GDK_VISUAL_PSEUDO_COLOR) &&
visuals[j]->type > visuals[i]->type)
{
temp_visual = visuals[j];
visuals[j] = visuals[i];
visuals[i] = temp_visual;
}
}
else if ((visuals[j]->depth > visuals[i]->depth) ||
((visuals[j]->depth == visuals[i]->depth) &&
(visuals[j]->type > visuals[i]->type)))
{
temp_visual = visuals[j];
visuals[j] = visuals[i];
visuals[i] = temp_visual;
}
}
}
}
for (i = 0; i < nvisuals; i++)
{
if (default_xvisual->visualid == GDK_X11_VISUAL (visuals[i])->xvisual->visualid)
x11_screen->system_visual = visuals[i];
/* For now, we only support 8888 ARGB for the "rgba visual".
* Additional formats (like ABGR) could be added later if they
* turn up.
*/
if (x11_screen->rgba_visual == NULL &&
visuals[i]->depth == 32 &&
(visuals[i]->red_mask == 0xff0000 &&
visuals[i]->green_mask == 0x00ff00 &&
visuals[i]->blue_mask == 0x0000ff))
{
x11_screen->rgba_visual = visuals[i];
}
}
#ifdef G_ENABLE_DEBUG
if (GDK_DISPLAY_DEBUG_CHECK (GDK_SCREEN_DISPLAY (x11_screen), MISC))
{
static const char *const visual_names[] =
{
"static gray",
"grayscale",
"static color",
"pseudo color",
"true color",
"direct color",
};
for (i = 0; i < nvisuals; i++)
g_message ("visual: %s: %d", visual_names[visuals[i]->type], visuals[i]->depth);
}
#endif /* G_ENABLE_DEBUG */
x11_screen->navailable_depths = 0;
for (i = 0; i < G_N_ELEMENTS (possible_depths); i++)
{
for (j = 0; j < nvisuals; j++)
{
if (visuals[j]->depth == possible_depths[i])
{
x11_screen->available_depths[x11_screen->navailable_depths++] = visuals[j]->depth;
break;
}
}
}
if (x11_screen->navailable_depths == 0)
g_error ("unable to find a usable depth");
x11_screen->navailable_types = 0;
for (i = 0; i < G_N_ELEMENTS (possible_types); i++)
{
for (j = 0; j < nvisuals; j++)
{
if (visuals[j]->type == possible_types[i])
{
x11_screen->available_types[x11_screen->navailable_types++] = visuals[j]->type;
break;
}
}
}
if (x11_screen->navailable_types == 0)
g_error ("unable to find a usable visual type");
x11_screen->visuals = visuals;
x11_screen->nvisuals = nvisuals;
/* If GL is available we want to pick better default/rgba visuals,
as we care about glx details such as alpha/depth/stencil depth,
stereo and double buffering */
_gdk_x11_screen_update_visuals_for_gl (x11_screen);
if (setup_display)
{
if (x11_screen->rgba_visual)
{
Visual *xvisual = GDK_X11_VISUAL (x11_screen->rgba_visual)->xvisual;
Colormap colormap;
colormap = XCreateColormap (x11_screen->xdisplay,
RootWindow (x11_screen->xdisplay, x11_screen->screen_num),
xvisual,
AllocNone);
gdk_display_setup_window_visual (GDK_SCREEN_DISPLAY (x11_screen),
x11_screen->rgba_visual->depth,
GDK_X11_VISUAL (x11_screen->rgba_visual)->xvisual,
colormap,
TRUE);
}
else
{
gdk_display_setup_window_visual (GDK_SCREEN_DISPLAY (x11_screen),
DefaultDepth (x11_screen->xdisplay, x11_screen->screen_num),
DefaultVisual (x11_screen->xdisplay, x11_screen->screen_num),
DefaultColormap (x11_screen->xdisplay, x11_screen->screen_num),
FALSE);
}
}
}
/**
* gdk_x11_screen_lookup_visual:
* @screen: a #GdkX11Screen.
* @xvisualid: an X Visual ID.
*
* Looks up the #GdkVisual for a particular screen and X Visual ID.
*
* Returns: (transfer none) (type GdkX11Visual): the #GdkVisual (owned by the screen
* object), or %NULL if the visual ID wasn’t found.
*/
GdkX11Visual *
gdk_x11_screen_lookup_visual (GdkX11Screen *x11_screen,
VisualID xvisualid)
{
int i;
for (i = 0; i < x11_screen->nvisuals; i++)
if (xvisualid == GDK_X11_VISUAL (x11_screen->visuals[i])->xvisual->visualid)
return x11_screen->visuals[i];
return NULL;
}
/**
* gdk_x11_visual_get_xvisual:
* @visual: (type GdkX11Visual): a #GdkVisual.
*
* Returns the X visual belonging to a #GdkVisual.
*
* Returns: (transfer none): an Xlib Visual*.
**/
Visual *
gdk_x11_visual_get_xvisual (GdkX11Visual *visual)
{
g_return_val_if_fail (GDK_IS_X11_VISUAL (visual), NULL);
return GDK_X11_VISUAL (visual)->xvisual;
}
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