forked from AuroraMiddleware/gtk
afee2c67c5
Wed Jul 26 12:59:31 2000 Tim Janik <timj@gtk.org>
* *.[hc]: applied patch from Andreas Persenius <ndap@swipnet.se> that
updates the license headers to the GNU Lesser General Public License,
as well as updating the copyright year to 2000.
324 lines
8.1 KiB
C
324 lines
8.1 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 "config.h"
|
|
|
|
#include "gdkvisual.h"
|
|
#include "gdkprivate-win32.h"
|
|
|
|
static void gdk_visual_decompose_mask (gulong mask,
|
|
gint *shift,
|
|
gint *prec);
|
|
|
|
static GdkVisualPrivate *system_visual;
|
|
|
|
static gint available_depths[1];
|
|
|
|
static GdkVisualType available_types[1];
|
|
|
|
void
|
|
gdk_visual_init (void)
|
|
{
|
|
struct
|
|
{
|
|
BITMAPINFOHEADER bi;
|
|
union
|
|
{
|
|
RGBQUAD colors[256];
|
|
DWORD fields[256];
|
|
} u;
|
|
} bmi;
|
|
HBITMAP hbm;
|
|
|
|
int rastercaps, numcolors, sizepalette, bitspixel;
|
|
|
|
system_visual = g_new (GdkVisualPrivate, 1);
|
|
|
|
bitspixel = GetDeviceCaps (gdk_display_hdc, BITSPIXEL);
|
|
rastercaps = GetDeviceCaps (gdk_display_hdc, RASTERCAPS);
|
|
system_visual->xvisual = g_new (Visual, 1);
|
|
system_visual->xvisual->visualid = 0;
|
|
system_visual->xvisual->bitspixel = bitspixel;
|
|
|
|
if (rastercaps & RC_PALETTE)
|
|
{
|
|
system_visual->visual.type = GDK_VISUAL_PSEUDO_COLOR;
|
|
numcolors = GetDeviceCaps (gdk_display_hdc, NUMCOLORS);
|
|
sizepalette = GetDeviceCaps (gdk_display_hdc, SIZEPALETTE);
|
|
system_visual->xvisual->map_entries = sizepalette;
|
|
}
|
|
else if (bitspixel == 1)
|
|
{
|
|
system_visual->visual.type = GDK_VISUAL_STATIC_GRAY;
|
|
system_visual->xvisual->map_entries = 2;
|
|
}
|
|
else if (bitspixel == 4)
|
|
{
|
|
system_visual->visual.type = GDK_VISUAL_STATIC_COLOR;
|
|
system_visual->xvisual->map_entries = 16;
|
|
}
|
|
else if (bitspixel == 8)
|
|
{
|
|
system_visual->visual.type = GDK_VISUAL_STATIC_COLOR;
|
|
system_visual->xvisual->map_entries = 256;
|
|
}
|
|
else if (bitspixel == 16)
|
|
{
|
|
system_visual->visual.type = GDK_VISUAL_TRUE_COLOR;
|
|
#if 1
|
|
/* This code by Mike Enright,
|
|
* see http://www.users.cts.com/sd/m/menright/display.html
|
|
*/
|
|
memset (&bmi, 0, sizeof (bmi));
|
|
bmi.bi.biSize = sizeof (bmi.bi);
|
|
|
|
hbm = CreateCompatibleBitmap (gdk_display_hdc, 1, 1);
|
|
GetDIBits (gdk_display_hdc, hbm, 0, 1, NULL,
|
|
(BITMAPINFO *) &bmi, DIB_RGB_COLORS);
|
|
GetDIBits (gdk_display_hdc, hbm, 0, 1, NULL,
|
|
(BITMAPINFO *) &bmi, DIB_RGB_COLORS);
|
|
DeleteObject (hbm);
|
|
|
|
if (bmi.bi.biCompression != BI_BITFIELDS)
|
|
{
|
|
/* Either BI_RGB or BI_RLE_something
|
|
* .... or perhaps (!!) something else.
|
|
* Theoretically biCompression might be
|
|
* mmioFourCC('c','v','i','d') but I doubt it.
|
|
*/
|
|
if (bmi.bi.biCompression == BI_RGB)
|
|
{
|
|
/* It's 555 */
|
|
bitspixel = 15;
|
|
system_visual->visual.red_mask = 0x00007C00;
|
|
system_visual->visual.green_mask = 0x000003E0;
|
|
system_visual->visual.blue_mask = 0x0000001F;
|
|
}
|
|
else
|
|
{
|
|
g_assert_not_reached ();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
DWORD allmasks =
|
|
bmi.u.fields[0] | bmi.u.fields[1] | bmi.u.fields[2];
|
|
int k = 0;
|
|
while (allmasks)
|
|
{
|
|
if (allmasks&1)
|
|
k++;
|
|
allmasks/=2;
|
|
}
|
|
bitspixel = k;
|
|
system_visual->visual.red_mask = bmi.u.fields[0];
|
|
system_visual->visual.green_mask = bmi.u.fields[1];
|
|
system_visual->visual.blue_mask = bmi.u.fields[2];
|
|
}
|
|
#else
|
|
/* Old, incorrect (but still working) code. */
|
|
#if 0
|
|
system_visual->visual.red_mask = 0x0000F800;
|
|
system_visual->visual.green_mask = 0x000007E0;
|
|
system_visual->visual.blue_mask = 0x0000001F;
|
|
#else
|
|
system_visual->visual.red_mask = 0x00007C00;
|
|
system_visual->visual.green_mask = 0x000003E0;
|
|
system_visual->visual.blue_mask = 0x0000001F;
|
|
#endif
|
|
#endif
|
|
}
|
|
else if (bitspixel == 24 || bitspixel == 32)
|
|
{
|
|
bitspixel = 24;
|
|
system_visual->visual.type = GDK_VISUAL_TRUE_COLOR;
|
|
system_visual->visual.red_mask = 0x00FF0000;
|
|
system_visual->visual.green_mask = 0x0000FF00;
|
|
system_visual->visual.blue_mask = 0x000000FF;
|
|
}
|
|
else
|
|
g_error ("gdk_visual_init: unsupported BITSPIXEL: %d\n", bitspixel);
|
|
|
|
system_visual->visual.depth = bitspixel;
|
|
system_visual->visual.byte_order = GDK_LSB_FIRST;
|
|
system_visual->visual.bits_per_rgb = 42; /* Not used? */
|
|
|
|
if ((system_visual->visual.type == GDK_VISUAL_TRUE_COLOR) ||
|
|
(system_visual->visual.type == GDK_VISUAL_DIRECT_COLOR))
|
|
{
|
|
gdk_visual_decompose_mask (system_visual->visual.red_mask,
|
|
&system_visual->visual.red_shift,
|
|
&system_visual->visual.red_prec);
|
|
|
|
gdk_visual_decompose_mask (system_visual->visual.green_mask,
|
|
&system_visual->visual.green_shift,
|
|
&system_visual->visual.green_prec);
|
|
|
|
gdk_visual_decompose_mask (system_visual->visual.blue_mask,
|
|
&system_visual->visual.blue_shift,
|
|
&system_visual->visual.blue_prec);
|
|
system_visual->xvisual->map_entries =
|
|
1 << (MAX (system_visual->visual.red_prec,
|
|
MAX (system_visual->visual.green_prec,
|
|
system_visual->visual.blue_prec)));
|
|
}
|
|
else
|
|
{
|
|
system_visual->visual.red_mask = 0;
|
|
system_visual->visual.red_shift = 0;
|
|
system_visual->visual.red_prec = 0;
|
|
|
|
system_visual->visual.green_mask = 0;
|
|
system_visual->visual.green_shift = 0;
|
|
system_visual->visual.green_prec = 0;
|
|
|
|
system_visual->visual.blue_mask = 0;
|
|
system_visual->visual.blue_shift = 0;
|
|
system_visual->visual.blue_prec = 0;
|
|
}
|
|
system_visual->visual.colormap_size = system_visual->xvisual->map_entries;
|
|
|
|
available_depths[0] = system_visual->visual.depth;
|
|
available_types[0] = system_visual->visual.type;
|
|
}
|
|
|
|
GdkVisual*
|
|
gdk_visual_ref (GdkVisual *visual)
|
|
{
|
|
return visual;
|
|
}
|
|
|
|
void
|
|
gdk_visual_unref (GdkVisual *visual)
|
|
{
|
|
return;
|
|
}
|
|
|
|
gint
|
|
gdk_visual_get_best_depth (void)
|
|
{
|
|
return available_depths[0];
|
|
}
|
|
|
|
GdkVisualType
|
|
gdk_visual_get_best_type (void)
|
|
{
|
|
return available_types[0];
|
|
}
|
|
|
|
GdkVisual*
|
|
gdk_visual_get_system (void)
|
|
{
|
|
return ((GdkVisual*) system_visual);
|
|
}
|
|
|
|
GdkVisual*
|
|
gdk_visual_get_best (void)
|
|
{
|
|
return ((GdkVisual*) system_visual);
|
|
}
|
|
|
|
GdkVisual*
|
|
gdk_visual_get_best_with_depth (gint depth)
|
|
{
|
|
if (depth == system_visual->visual.depth)
|
|
return (GdkVisual*) system_visual;
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
GdkVisual*
|
|
gdk_visual_get_best_with_type (GdkVisualType visual_type)
|
|
{
|
|
if (visual_type == system_visual->visual.type)
|
|
return (GdkVisual*) system_visual;
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
GdkVisual*
|
|
gdk_visual_get_best_with_both (gint depth,
|
|
GdkVisualType visual_type)
|
|
{
|
|
if ((depth == system_visual->visual.depth) &&
|
|
(visual_type == system_visual->visual.type))
|
|
return (GdkVisual*) system_visual;
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
gdk_query_depths (gint **depths,
|
|
gint *count)
|
|
{
|
|
*count = 1;
|
|
*depths = available_depths;
|
|
}
|
|
|
|
void
|
|
gdk_query_visual_types (GdkVisualType **visual_types,
|
|
gint *count)
|
|
{
|
|
*count = 1;
|
|
*visual_types = available_types;
|
|
}
|
|
|
|
GList*
|
|
gdk_list_visuals (void)
|
|
{
|
|
return g_list_append (NULL, (gpointer) system_visual);
|
|
}
|
|
|
|
GdkVisual*
|
|
gdk_visual_lookup (Visual *xvisual)
|
|
{
|
|
if (system_visual->xvisual == xvisual)
|
|
return (GdkVisual *) system_visual;
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
gdk_visual_decompose_mask (gulong mask,
|
|
gint *shift,
|
|
gint *prec)
|
|
{
|
|
*shift = 0;
|
|
*prec = 0;
|
|
|
|
while (!(mask & 0x1))
|
|
{
|
|
(*shift)++;
|
|
mask >>= 1;
|
|
}
|
|
|
|
while (mask & 0x1)
|
|
{
|
|
(*prec)++;
|
|
mask >>= 1;
|
|
}
|
|
}
|