gtk/gdk/win32/gdkimage-win32.c
Tor Lillqvist 330dd2f7c3 Copy our gdkprivate.h and gdkx.h to a gdk subdirectory, so that
* gdk/win32/makefile.{cygwin,msc}: Copy our gdkprivate.h and
 	gdkx.h to a gdk subdirectory, so that applications can include
 	these with <gdk/*.h> without trouble.

	* gdk/win32/gdkimage.c (gdk_image_new_with_depth): Code simplified.
	(gdk_image_destroy): Plugged resource leak, some GdkImages didn't
	have their bitmap destroyed.

	* gdk/win32/gdk.def: Add gdk_root_parent.
1999-05-18 22:23:23 +00:00

758 lines
18 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 Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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 1997-1999. 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 <gdk/gdk.h>
#include "gdkprivate.h"
static void gdk_image_put_normal (GdkDrawable *drawable,
GdkGC *gc,
GdkImage *image,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height);
static GList *image_list = NULL;
void
gdk_image_exit (void)
{
GdkImage *image;
while (image_list)
{
image = image_list->data;
gdk_image_destroy (image);
}
}
GdkImage *
gdk_image_new_bitmap (GdkVisual *visual, gpointer data, gint w, gint h)
/*
* Desc: create a new bitmap image
*/
{
Visual *xvisual;
GdkImage *image;
GdkImagePrivate *private;
struct {
BITMAPINFOHEADER bmiHeader;
union {
WORD bmiIndices[2];
RGBQUAD bmiColors[2];
} u;
} bmi;
char *bits;
int bpl = (w-1)/8 + 1;
int bpl32 = ((w-1)/32 + 1)*4;
private = g_new(GdkImagePrivate, 1);
image = (GdkImage *) private;
private->image_put = gdk_image_put_normal;
image->type = GDK_IMAGE_SHARED;
image->visual = visual;
image->width = w;
image->height = h;
image->depth = 1;
xvisual = ((GdkVisualPrivate*) visual)->xvisual;
GDK_NOTE (MISC, g_print ("gdk_image_new_bitmap: %dx%d\n", w, h));
bmi.bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = w;
bmi.bmiHeader.biHeight = -h;
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = 1;
bmi.bmiHeader.biCompression = BI_RGB;
bmi.bmiHeader.biSizeImage = 0;
bmi.bmiHeader.biXPelsPerMeter =
bmi.bmiHeader.biYPelsPerMeter = 0;
bmi.bmiHeader.biClrUsed = 0;
bmi.bmiHeader.biClrImportant = 0;
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;
private->ximage = CreateDIBSection (gdk_DC, (BITMAPINFO *) &bmi,
DIB_RGB_COLORS, &bits, NULL, 0);
if (bpl != bpl32)
{
/* Win32 expects scanlines in DIBs to be 32 bit aligned */
int i;
for (i = 0; i < h; i++)
memmove (bits + i*bpl32, ((char *) data) + i*bpl, bpl);
}
else
memmove (bits, data, bpl*h);
image->mem = bits;
image->bpl = bpl32;
image->byte_order = GDK_MSB_FIRST;
image->bpp = 1;
return(image);
} /* gdk_image_new_bitmap() */
void
gdk_image_init (void)
{
}
static GdkImage*
gdk_image_new_with_depth (GdkImageType type,
GdkVisual *visual,
gint width,
gint height,
gint depth)
{
GdkImage *image;
GdkImagePrivate *private;
Visual *xvisual;
struct {
BITMAPINFOHEADER bmiHeader;
union {
WORD bmiIndices[256];
DWORD bmiMasks[3];
RGBQUAD bmiColors[256];
} u;
} bmi;
UINT iUsage;
int i;
if (type == GDK_IMAGE_FASTEST || type == GDK_IMAGE_NORMAL)
type = GDK_IMAGE_SHARED;
GDK_NOTE (MISC, g_print ("gdk_image_new_with_depth: %dx%dx%d %s\n",
width, height, depth,
(type == GDK_IMAGE_SHARED ? "shared" :
(type == GDK_IMAGE_SHARED_PIXMAP ? "shared_pixmap" :
"???"))));
private = g_new (GdkImagePrivate, 1);
image = (GdkImage*) private;
private->image_put = NULL;
image->type = type;
image->visual = visual;
image->width = width;
image->height = height;
image->depth = depth;
xvisual = ((GdkVisualPrivate*) visual)->xvisual;
private->image_put = gdk_image_put_normal;
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 1
if (depth == 16)
bmi.bmiHeader.biCompression = BI_BITFIELDS;
else
#endif
bmi.bmiHeader.biCompression = BI_RGB;
bmi.bmiHeader.biSizeImage = 0;
bmi.bmiHeader.biXPelsPerMeter =
bmi.bmiHeader.biYPelsPerMeter = 0;
bmi.bmiHeader.biClrUsed = 0;
bmi.bmiHeader.biClrImportant = 0;
if (image->visual->type == GDK_VISUAL_PSEUDO_COLOR)
{
iUsage = DIB_PAL_COLORS;
for (i = 0; i < 256; i++)
bmi.u.bmiIndices[i] = i;
}
else
{
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;
}
#if 1
else if (depth == 16)
{
bmi.u.bmiMasks[0] = visual->red_mask;
bmi.u.bmiMasks[1] = visual->green_mask;
bmi.u.bmiMasks[2] = visual->blue_mask;
}
#endif
iUsage = DIB_RGB_COLORS;
}
private->ximage =
CreateDIBSection (gdk_DC, (BITMAPINFO *) &bmi, iUsage,
&image->mem, NULL, 0);
if (private->ximage == NULL)
{
g_warning ("gdk_image_new_with_depth: CreateDIBSection failed");
g_free (image);
return NULL;
}
switch (depth)
{
case 1:
case 8:
image->bpp = 1;
break;
case 15:
case 16:
image->bpp = 2;
break;
case 24:
image->bpp = 3;
break;
case 32:
image->bpp = 4;
break;
default:
g_warning ("gdk_image_new_with_depth: depth = %d", depth);
g_assert_not_reached ();
}
image->byte_order = GDK_LSB_FIRST;
if (depth == 1)
image->bpl = ((width-1)/32 + 1)*4;
else
image->bpl = ((width*image->bpp - 1)/4 + 1)*4;
GDK_NOTE (MISC, g_print ("... = %#x mem = %#x, bpl = %d\n",
private->ximage, image->mem, image->bpl));
return image;
}
GdkImage*
gdk_image_new (GdkImageType type,
GdkVisual *visual,
gint width,
gint height)
{
return gdk_image_new_with_depth (type, visual, width, height, visual->depth);
}
GdkImage*
gdk_image_bitmap_new (GdkImageType type,
GdkVisual *visual,
gint width,
gint height)
{
return gdk_image_new_with_depth (type, visual, width, height, 1);
}
GdkImage*
gdk_image_get (GdkWindow *window,
gint x,
gint y,
gint width,
gint height)
{
GdkImage *image;
GdkImagePrivate *private;
GdkWindowPrivate *win_private;
HDC hdc, memdc;
struct {
BITMAPINFOHEADER bmiHeader;
union {
WORD bmiIndices[256];
DWORD bmiMasks[3];
RGBQUAD bmiColors[256];
} u;
} bmi;
HGDIOBJ oldbitmap1, oldbitmap2;
UINT iUsage;
BITMAP bm;
int i;
g_return_val_if_fail (window != NULL, NULL);
win_private = (GdkWindowPrivate *) window;
if (win_private->destroyed)
return NULL;
GDK_NOTE (MISC, g_print ("gdk_image_get: %#x %dx%d@+%d+%d\n",
win_private->xwindow, width, height, x, y));
private = g_new (GdkImagePrivate, 1);
image = (GdkImage*) private;
private->image_put = gdk_image_put_normal;
image->type = GDK_IMAGE_SHARED;
image->visual = gdk_window_get_visual (window);
image->width = width;
image->height = height;
/* This function is called both to blit from a window and from
* a pixmap.
*/
if (win_private->window_type == GDK_WINDOW_PIXMAP)
{
if ((hdc = CreateCompatibleDC (NULL)) == NULL)
{
g_warning ("gdk_image_get: CreateCompatibleDC #1 failed");
g_free (image);
return NULL;
}
if ((oldbitmap1 = SelectObject (hdc, win_private->xwindow)) == NULL)
{
g_warning ("gdk_image_get: SelectObject #1 failed");
DeleteDC (hdc);
g_free (image);
return NULL;
}
GetObject (win_private->xwindow, sizeof (BITMAP), &bm);
GDK_NOTE (MISC,
g_print ("gdk_image_get: bmWidth = %d, bmHeight = %d, bmWidthBytes = %d, bmBitsPixel = %d\n",
bm.bmWidth, bm.bmHeight, bm.bmWidthBytes, bm.bmBitsPixel));
image->depth = bm.bmBitsPixel;
if (image->depth <= 8)
{
iUsage = DIB_PAL_COLORS;
for (i = 0; i < 256; i++)
bmi.u.bmiIndices[i] = i;
}
else
iUsage = DIB_RGB_COLORS;
}
else
{
if ((hdc = GetDC (win_private->xwindow)) == NULL)
{
g_warning ("gdk_image_get: GetDC failed");
g_free (image);
return NULL;
}
image->depth = gdk_visual_get_system ()->depth;
if (image->visual->type == GDK_VISUAL_PSEUDO_COLOR)
{
iUsage = DIB_PAL_COLORS;
for (i = 0; i < 256; i++)
bmi.u.bmiIndices[i] = i;
}
else
iUsage = DIB_RGB_COLORS;
}
if ((memdc = CreateCompatibleDC (hdc)) == NULL)
{
g_warning ("gdk_image_get: CreateCompatibleDC #2 failed");
if (win_private->window_type == GDK_WINDOW_PIXMAP)
{
SelectObject (hdc, oldbitmap1);
DeleteDC (hdc);
}
else
{
ReleaseDC (win_private->xwindow, hdc);
}
g_free (image);
return NULL;
}
bmi.bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = width;
bmi.bmiHeader.biHeight = -height;
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = image->depth;
if (image->depth == 16)
{
bmi.bmiHeader.biCompression = BI_BITFIELDS;
if (image->visual == NULL)
{
/* XXX ??? Is it always this if depth==16 and a pixmap? Guess so. */
bmi.u.bmiMasks[0] = 0xf800;
bmi.u.bmiMasks[1] = 0x07e0;
bmi.u.bmiMasks[2] = 0x001f;
}
else
{
bmi.u.bmiMasks[0] = image->visual->red_mask;
bmi.u.bmiMasks[1] = image->visual->green_mask;
bmi.u.bmiMasks[2] = image->visual->blue_mask;
}
}
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;
if ((private->ximage =
CreateDIBSection (hdc, (BITMAPINFO *) &bmi, iUsage,
&image->mem, NULL, 0)) == NULL)
{
g_warning ("gdk_image_get: CreateDIBSection failed");
DeleteDC (memdc);
if (win_private->window_type == GDK_WINDOW_PIXMAP)
{
SelectObject (hdc, oldbitmap1);
DeleteDC (hdc);
}
else
{
ReleaseDC (win_private->xwindow, hdc);
}
g_free (image);
return NULL;
}
if ((oldbitmap2 = SelectObject (memdc, private->ximage)) == NULL)
{
g_warning ("gdk_image_get: SelectObject #2 failed");
DeleteObject (private->ximage);
DeleteDC (memdc);
if (win_private->window_type == GDK_WINDOW_PIXMAP)
{
SelectObject (hdc, oldbitmap1);
DeleteDC (hdc);
}
else
{
ReleaseDC (win_private->xwindow, hdc);
}
g_free (image);
return NULL;
}
if (!BitBlt (memdc, 0, 0, width, height, hdc, x, y, SRCCOPY))
{
g_warning ("gdk_image_get: BitBlt failed");
SelectObject (memdc, oldbitmap2);
DeleteObject (private->ximage);
DeleteDC (memdc);
if (win_private->window_type == GDK_WINDOW_PIXMAP)
{
SelectObject (hdc, oldbitmap1);
DeleteDC (hdc);
}
else
{
ReleaseDC (win_private->xwindow, hdc);
}
g_free (image);
return NULL;
}
if (SelectObject (memdc, oldbitmap2) == NULL)
g_warning ("gdk_image_get: SelectObject #3 failed");
if (!DeleteDC (memdc))
g_warning ("gdk_image_get: DeleteDC failed");
if (win_private->window_type == GDK_WINDOW_PIXMAP)
{
SelectObject (hdc, oldbitmap1);
DeleteDC (hdc);
}
else
{
ReleaseDC (win_private->xwindow, hdc);
}
switch (image->depth)
{
case 1:
case 8:
image->bpp = 1;
break;
case 15:
case 16:
image->bpp = 2;
break;
case 24:
image->bpp = 3;
break;
case 32:
image->bpp = 4;
break;
default:
g_warning ("gdk_image_get: image->depth = %d", image->depth);
g_assert_not_reached ();
}
image->byte_order = GDK_LSB_FIRST;
if (image->depth == 1)
image->bpl = (width - 1)/8 + 1;
else
image->bpl = ((width*image->bpp - 1)/4 + 1)*4;
GDK_NOTE (MISC, g_print ("... = %#x mem = %#x, bpl = %d\n",
private->ximage, image->mem, image->bpl));
return image;
}
guint32
gdk_image_get_pixel (GdkImage *image,
gint x,
gint y)
{
guint32 pixel;
GdkImagePrivate *private;
g_return_val_if_fail (image != NULL, 0);
private = (GdkImagePrivate *) image;
g_return_val_if_fail (x >= 0 && x < image->width
&& y >= 0 && y < image->height, 0);
if (image->depth == 1)
pixel = (((char *) image->mem)[y * image->bpl + (x >> 3)] & (1 << (7 - (x & 0x7)))) != 0;
else
{
guchar *pixelp = (guchar *) image->mem + y * image->bpl + x * image->bpp;
switch (image->bpp)
{
case 1:
pixel = *pixelp;
break;
/* Windows is always LSB, no need to check image->byte_order. */
case 2:
pixel = pixelp[0] | (pixelp[1] << 8);
break;
case 3:
pixel = pixelp[0] | (pixelp[1] << 8) | (pixelp[2] << 16);
break;
case 4:
pixel = pixelp[0] | (pixelp[1] << 8) | (pixelp[2] << 16);
break;
}
}
return pixel;
}
void
gdk_image_put_pixel (GdkImage *image,
gint x,
gint y,
guint32 pixel)
{
GdkImagePrivate *private;
g_return_if_fail (image != NULL);
private = (GdkImagePrivate *) image;
g_return_if_fail (x >= 0 && x < image->width && y >= 0 && y < image->height);
if (image->depth == 1)
if (pixel & 1)
((guchar *) image->mem)[y * image->bpl + (x >> 3)] |= (1 << (7 - (x & 0x7)));
else
((guchar *) image->mem)[y * image->bpl + (x >> 3)] &= ~(1 << (7 - (x & 0x7)));
else
{
guchar *pixelp = (guchar *) image->mem + y * image->bpl + x * image->bpp;
/* Windows is always LSB, no need to check image->byte_order. */
switch (image->bpp)
{
case 4:
pixelp[3] = 0;
case 3:
pixelp[2] = ((pixel >> 16) & 0xFF);
case 2:
pixelp[1] = ((pixel >> 8) & 0xFF);
case 1:
pixelp[0] = (pixel & 0xFF);
}
}
}
void
gdk_image_destroy (GdkImage *image)
{
GdkImagePrivate *private;
g_return_if_fail (image != NULL);
private = (GdkImagePrivate*) image;
GDK_NOTE (MISC, g_print ("gdk_image_destroy: %#x%s\n",
private->ximage,
(image->type == GDK_IMAGE_SHARED_PIXMAP ?
" (shared pixmap)" : "")));
switch (image->type)
{
case GDK_IMAGE_SHARED_PIXMAP:
break; /* The Windows bitmap has already been
* (or will be) deleted when freeing
* the corresponding pixmap.
*/
case GDK_IMAGE_SHARED:
if (!DeleteObject (private->ximage))
g_warning ("gdk_image_destroy: DeleteObject failed");
break;
default:
g_assert_not_reached ();
}
g_free (image);
}
static void
gdk_image_put_normal (GdkDrawable *drawable,
GdkGC *gc,
GdkImage *image,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
GdkWindowPrivate *drawable_private;
GdkImagePrivate *image_private;
GdkGCPrivate *gc_private;
HDC hdc;
GdkColormapPrivate *colormap_private;
g_return_if_fail (drawable != NULL);
g_return_if_fail (image != NULL);
g_return_if_fail (gc != NULL);
drawable_private = (GdkWindowPrivate*) drawable;
if (drawable_private->destroyed)
return;
image_private = (GdkImagePrivate*) image;
gc_private = (GdkGCPrivate*) gc;
/* The image can in fact be "shared", so don't test */
hdc = gdk_gc_predraw (drawable_private, gc_private);
colormap_private = (GdkColormapPrivate *) drawable_private->colormap;
if (colormap_private && colormap_private->xcolormap->rc_palette)
{
DIBSECTION ds;
static struct {
BITMAPINFOHEADER bmiHeader;
WORD bmiIndices[256];
} bmi;
static gboolean bmi_inited = FALSE;
int i;
if (!bmi_inited)
{
for (i = 0; i < 256; i++)
bmi.bmiIndices[i] = i;
bmi_inited = TRUE;
}
if (GetObject (image_private->ximage, sizeof (DIBSECTION),
&ds) != sizeof (DIBSECTION))
{
g_warning ("gdk_image_put_normal: GetObject failed");
}
#if 0
g_print("xdest = %d, ydest = %d, xsrc = %d, ysrc = %d, width = %d, height = %d\n",
xdest, ydest, xsrc, ysrc, width, height);
g_print("bmWidth = %d, bmHeight = %d, bmBitsPixel = %d, bmBits = %p\n",
ds.dsBm.bmWidth, ds.dsBm.bmHeight, ds.dsBm.bmBitsPixel, ds.dsBm.bmBits);
g_print("biWidth = %d, biHeight = %d, biBitCount = %d, biClrUsed = %d\n",
ds.dsBmih.biWidth, ds.dsBmih.biHeight, ds.dsBmih.biBitCount, ds.dsBmih.biClrUsed);
#endif
bmi.bmiHeader = ds.dsBmih;
/* I have spent hours on getting the parameters to
* SetDIBitsToDevice right. I wonder what drugs the guys in
* Redmond were on when they designed this API.
*/
if (SetDIBitsToDevice (hdc,
xdest, ydest,
width, height,
xsrc, (-ds.dsBmih.biHeight)-height-ysrc,
0, -ds.dsBmih.biHeight,
ds.dsBm.bmBits,
(CONST BITMAPINFO *) &bmi,
DIB_PAL_COLORS) == 0)
g_warning ("SetDIBitsToDevice failed");
}
else
{
HDC memdc;
HGDIOBJ oldbitmap;
if ((memdc = CreateCompatibleDC (hdc)) == NULL)
{
g_warning ("gdk_image_put_normal: CreateCompatibleDC failed");
gdk_gc_postdraw (drawable_private, gc_private);
return;
}
if ((oldbitmap = SelectObject (memdc, image_private->ximage)) == NULL)
{
g_warning ("gdk_image_put_normal: SelectObject #1 failed");
gdk_gc_postdraw (drawable_private, gc_private);
return;
}
if (!BitBlt (hdc, xdest, ydest, width, height,
memdc, xsrc, ysrc, SRCCOPY))
g_warning ("gdk_image_put_normal: BitBlt failed");
if (SelectObject (memdc, oldbitmap) == NULL)
g_warning ("gdk_image_put_normal: SelectObject #2 failed");
if (!DeleteDC (memdc))
g_warning ("gdk_image_put_normal: DeleteDC failed");
}
gdk_gc_postdraw (drawable_private, gc_private);
}