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gtk/gdk/win32/gdkpixmap-win32.c

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/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
* Copyright (C) 1998-1999 Tor Lillqvist
*
* 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 <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "gdkpixmap.h"
#include "gdkinternals.h"
#include "gdkprivate-win32.h"
static void gdk_pixmap_impl_win32_get_size (GdkDrawable *drawable,
gint *width,
gint *height);
static void gdk_pixmap_impl_win32_init (GdkPixmapImplWin32 *pixmap);
static void gdk_pixmap_impl_win32_class_init (GdkPixmapImplWin32Class *klass);
static void gdk_pixmap_impl_win32_finalize (GObject *object);
static gpointer parent_class = NULL;
GType
gdk_pixmap_impl_win32_get_type (void)
{
static GType object_type = 0;
if (!object_type)
{
static const GTypeInfo object_info =
{
sizeof (GdkPixmapImplWin32Class),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gdk_pixmap_impl_win32_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GdkPixmapImplWin32),
0, /* n_preallocs */
(GInstanceInitFunc) gdk_pixmap_impl_win32_init,
};
object_type = g_type_register_static (GDK_TYPE_DRAWABLE_IMPL_WIN32,
"GdkPixmapImplWin32",
&object_info, 0);
}
return object_type;
}
GType
_gdk_pixmap_impl_get_type (void)
{
return gdk_pixmap_impl_win32_get_type ();
}
static void
gdk_pixmap_impl_win32_init (GdkPixmapImplWin32 *impl)
{
impl->width = 1;
impl->height = 1;
}
static void
gdk_pixmap_impl_win32_class_init (GdkPixmapImplWin32Class *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GdkDrawableClass *drawable_class = GDK_DRAWABLE_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = gdk_pixmap_impl_win32_finalize;
drawable_class->get_size = gdk_pixmap_impl_win32_get_size;
}
static void
gdk_pixmap_impl_win32_finalize (GObject *object)
{
GdkPixmapImplWin32 *impl = GDK_PIXMAP_IMPL_WIN32 (object);
GdkPixmap *wrapper = GDK_PIXMAP (GDK_DRAWABLE_IMPL_WIN32 (impl)->wrapper);
GDK_NOTE (MISC, g_print ("gdk_pixmap_impl_win32_finalize: %#x\n",
(guint) GDK_PIXMAP_HBITMAP (wrapper)));
if (!DeleteObject (GDK_PIXMAP_HBITMAP (wrapper)))
WIN32_GDI_FAILED ("DeleteObject");
gdk_win32_handle_table_remove (GDK_PIXMAP_HBITMAP (wrapper));
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gdk_pixmap_impl_win32_get_size (GdkDrawable *drawable,
gint *width,
gint *height)
{
if (width)
*width = GDK_PIXMAP_IMPL_WIN32 (drawable)->width;
if (height)
*height = GDK_PIXMAP_IMPL_WIN32 (drawable)->height;
}
GdkPixmap*
gdk_pixmap_new (GdkWindow *window,
gint width,
gint height,
gint depth)
{
GdkPixmap *pixmap;
GdkDrawableImplWin32 *draw_impl;
GdkPixmapImplWin32 *pix_impl;
GdkVisual *visual;
struct {
BITMAPINFOHEADER bmiHeader;
union {
WORD bmiIndices[256];
DWORD bmiMasks[3];
RGBQUAD bmiColors[256];
} u;
} bmi;
UINT iUsage;
HDC hdc;
guchar *bits;
gint i;
g_return_val_if_fail (window == NULL || GDK_IS_WINDOW (window), NULL);
g_return_val_if_fail ((window != NULL) || (depth != -1), NULL);
#if 1
g_return_val_if_fail ((width != 0) && (height != 0), NULL);
#else
/* HB: Not The Right Thing to do, but a nice way to debug
* the backing store facility without immediate crashes ...
*/
if (width == 0 || height == 0)
{
g_warning("gdk_pixmap_new: size requested: %ld %ld", width, height);
/* testing: where does it crash next? */
if (width == 0) width = 1;
if (height == 0) height = 1;
}
#endif
if (!window)
window = gdk_parent_root;
if (GDK_WINDOW_DESTROYED (window))
return NULL;
visual = gdk_drawable_get_visual (window);
if (depth == -1)
depth = gdk_drawable_get_depth (GDK_DRAWABLE (window));
GDK_NOTE (MISC, g_print ("gdk_pixmap_new: %dx%dx%d\n",
width, height, depth));
pixmap = g_object_new (gdk_pixmap_get_type (), NULL);
draw_impl = GDK_DRAWABLE_IMPL_WIN32 (GDK_PIXMAP_OBJECT (pixmap)->impl);
pix_impl = GDK_PIXMAP_IMPL_WIN32 (GDK_PIXMAP_OBJECT (pixmap)->impl);
draw_impl->wrapper = GDK_DRAWABLE (pixmap);
pix_impl->is_foreign = FALSE;
pix_impl->width = width;
pix_impl->height = height;
GDK_PIXMAP_OBJECT (pixmap)->depth = depth;
if ((hdc = GetDC (GDK_WINDOW_HWND (window))) == NULL)
{
WIN32_GDI_FAILED ("GetDC");
g_object_unref ((GObject *) pixmap);
return NULL;
}
bmi.bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = width;
bmi.bmiHeader.biHeight = -height;
bmi.bmiHeader.biPlanes = 1;
if (depth == 15)
bmi.bmiHeader.biBitCount = 16;
else
bmi.bmiHeader.biBitCount = depth;
if (depth == 16)
bmi.bmiHeader.biCompression = BI_BITFIELDS;
else
bmi.bmiHeader.biCompression = BI_RGB;
bmi.bmiHeader.biSizeImage = 0;
bmi.bmiHeader.biXPelsPerMeter =
bmi.bmiHeader.biYPelsPerMeter = 0;
bmi.bmiHeader.biClrUsed = 0;
bmi.bmiHeader.biClrImportant = 0;
iUsage = DIB_RGB_COLORS;
if (depth == 1)
{
bmi.u.bmiColors[0].rgbBlue =
bmi.u.bmiColors[0].rgbGreen =
bmi.u.bmiColors[0].rgbRed = 0x00;
bmi.u.bmiColors[0].rgbReserved = 0x00;
bmi.u.bmiColors[1].rgbBlue =
bmi.u.bmiColors[1].rgbGreen =
bmi.u.bmiColors[1].rgbRed = 0xFF;
bmi.u.bmiColors[1].rgbReserved = 0x00;
draw_impl->colormap = NULL;
}
else
{
draw_impl->colormap = GDK_DRAWABLE_IMPL_WIN32 (GDK_WINDOW_OBJECT (window)->impl)->colormap;
if (draw_impl->colormap == NULL)
draw_impl->colormap = gdk_colormap_get_system ();
if (depth == 8)
{
iUsage = DIB_PAL_COLORS;
for (i = 0; i < 256; i++)
bmi.u.bmiIndices[i] = i;
}
else
{
if (depth != visual->depth)
g_warning ("gdk_pixmap_new: depth %d doesn't match display depth %d",
depth, visual->depth);
if (depth == 16)
{
bmi.u.bmiMasks[0] = visual->red_mask;
bmi.u.bmiMasks[1] = visual->green_mask;
bmi.u.bmiMasks[2] = visual->blue_mask;
}
}
}
if ((draw_impl->handle = CreateDIBSection (hdc, (BITMAPINFO *) &bmi,
iUsage, (PVOID *) &bits,
NULL, 0)) == NULL)
{
WIN32_GDI_FAILED ("CreateDIBSection");
ReleaseDC (GDK_WINDOW_HWND (window), hdc);
g_object_unref ((GObject *) pixmap);
return NULL;
}
ReleaseDC (GDK_WINDOW_HWND (window), hdc);
GDK_NOTE (MISC, g_print ("... = %#x\n",
(guint) GDK_PIXMAP_HBITMAP (pixmap)));
gdk_win32_handle_table_insert (&GDK_PIXMAP_HBITMAP (pixmap), pixmap);
return pixmap;
}
static unsigned char mirror[256] = {
0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
};
GdkPixmap *
gdk_bitmap_create_from_data (GdkWindow *window,
const gchar *data,
gint width,
gint height)
{
GdkPixmap *pixmap;
GdkDrawableImplWin32 *draw_impl;
GdkPixmapImplWin32 *pix_impl;
gint i, j, bpl, aligned_bpl;
guchar *bits;
g_return_val_if_fail (data != NULL, NULL);
g_return_val_if_fail ((width != 0) && (height != 0), NULL);
g_return_val_if_fail (window == NULL || GDK_IS_WINDOW (window), NULL);
if (!window)
window = gdk_parent_root;
if (GDK_WINDOW_DESTROYED (window))
return NULL;
pixmap = g_object_new (gdk_pixmap_get_type (), NULL);
draw_impl = GDK_DRAWABLE_IMPL_WIN32 (GDK_PIXMAP_OBJECT (pixmap)->impl);
pix_impl = GDK_PIXMAP_IMPL_WIN32 (GDK_PIXMAP_OBJECT (pixmap)->impl);
draw_impl->wrapper = GDK_DRAWABLE (pixmap);
pix_impl->is_foreign = FALSE;
pix_impl->width = width;
pix_impl->height = height;
GDK_PIXMAP_OBJECT (pixmap)->depth = 1;
bpl = ((width - 1) / 8 + 1);
aligned_bpl = ((bpl - 1) / 2 + 1) * 2;
bits = g_malloc (aligned_bpl * height);
for (i = 0; i < height; i++)
for (j = 0; j < bpl; j++)
bits[i*aligned_bpl + j] = mirror[(guchar) data[i*bpl + j]];
draw_impl->handle = CreateBitmap (width, height, 1, 1, bits);
GDK_NOTE (MISC, g_print ("gdk_bitmap_create_from_data: %dx%d = %#x\n",
width, height,
(guint) GDK_PIXMAP_HBITMAP (pixmap)));
g_free (bits);
draw_impl->colormap = NULL;
gdk_win32_handle_table_insert (&GDK_PIXMAP_HBITMAP (pixmap), pixmap);
return pixmap;
}
GdkPixmap*
gdk_pixmap_create_from_data (GdkWindow *window,
const gchar *data,
gint width,
gint height,
gint depth,
GdkColor *fg,
GdkColor *bg)
{
/* Oh wow. I struggled with dozens of lines of code trying to get
* this right using a monochrome Win32 bitmap created from data, and
* a colour DIB section as the result, trying setting pens,
* background colors, whatnot and BitBlt:ing. Nope. Then finally I
* realized it's much easier to do it using gdk...:
*/
GdkPixmap *result;
GdkPixmap *source;
GdkGC *gc;
if (GDK_WINDOW_DESTROYED (window))
return NULL;
result = gdk_pixmap_new (window, width, height, depth);
source = gdk_bitmap_create_from_data (window, data, width, height);
gc = gdk_gc_new (result);
gdk_gc_set_foreground (gc, fg);
gdk_gc_set_background (gc, bg);
gdk_draw_drawable (result, gc, source, 0, 0, 0, 0, width, height);
gdk_drawable_unref (source);
gdk_gc_unref (gc);
GDK_NOTE (MISC, g_print ("gdk_pixmap_create_from_data: %dx%dx%d = %#x\n",
width, height, depth,
(guint) GDK_PIXMAP_HBITMAP (result)));
return result;
}
GdkPixmap*
gdk_pixmap_foreign_new (GdkNativeWindow anid)
{
GdkPixmap *pixmap;
GdkDrawableImplWin32 *draw_impl;
GdkPixmapImplWin32 *pix_impl;
HBITMAP hbitmap;
SIZE size;
unsigned int w_ret, h_ret;
/* check to make sure we were passed a HBITMAP */
g_return_val_if_fail(GetObjectType ((HGDIOBJ) anid) == OBJ_BITMAP, NULL);
/* set the pixmap to the passed in value */
hbitmap = (HBITMAP) anid;
/* get information about the bitmap to fill in the structure for
the gdk window */
GetBitmapDimensionEx (hbitmap, &size);
w_ret = size.cx;
h_ret = size.cy;
/* allocate a new gdk pixmap */
pixmap = g_object_new (gdk_pixmap_get_type (), NULL);
draw_impl = GDK_DRAWABLE_IMPL_WIN32 (GDK_PIXMAP_OBJECT (pixmap)->impl);
pix_impl = GDK_PIXMAP_IMPL_WIN32 (GDK_PIXMAP_OBJECT (pixmap)->impl);
draw_impl->wrapper = GDK_DRAWABLE (pixmap);
draw_impl->handle = hbitmap;
draw_impl->colormap = NULL;
pix_impl->width = w_ret;
pix_impl->height = h_ret;
gdk_win32_handle_table_insert (&GDK_PIXMAP_HBITMAP (pixmap), pixmap);
return pixmap;
}
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