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gtk/gdk/win32/gdkimage-win32.c
Tim Janik afee2c67c5 applied patch from Andreas Persenius <ndap@swipnet.se> that updates the 
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.
2000-07-26 11:33:08 +00:00

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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, 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 "gdkimage.h"
#include "gdkpixmap.h"
#include "gdkinternals.h"
#include "gdkprivate-win32.h"
#include "gdkdrawable-win32.h"
#include "gdkwindow-win32.h"
#include "gdkpixmap-win32.h"
static GList *image_list = NULL;
static gpointer parent_class = NULL;
static void gdk_win32_image_destroy (GdkImage *image);
static void gdk_image_init (GdkImage *image);
static void gdk_image_class_init (GdkImageClass *klass);
static void gdk_image_finalize (GObject *object);
#define PRIVATE_DATA(image) ((GdkImagePrivateWin32 *) GDK_IMAGE (image)->windowing_data)
GType
gdk_image_get_type (void)
{
static GType object_type = 0;
if (!object_type)
{
static const GTypeInfo object_info =
{
sizeof (GdkImageClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gdk_image_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GdkImage),
0, /* n_preallocs */
(GInstanceInitFunc) gdk_image_init,
};
object_type = g_type_register_static (G_TYPE_OBJECT,
"GdkImage",
&object_info);
}
return object_type;
}
static void
gdk_image_init (GdkImage *image)
{
image->windowing_data = g_new0 (GdkImagePrivateWin32, 1);
}
static void
gdk_image_class_init (GdkImageClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = gdk_image_finalize;
}
static void
gdk_image_finalize (GObject *object)
{
GdkImage *image = GDK_IMAGE (object);
gdk_win32_image_destroy (image);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
void
gdk_image_exit (void)
{
GdkImage *image;
while (image_list)
{
image = image_list->data;
gdk_win32_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;
GdkImagePrivateWin32 *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;
image = g_object_new (gdk_image_get_type (), NULL);
private = PRIVATE_DATA (image);
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->hbitmap = CreateDIBSection (gdk_display_hdc, (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_windowing_image_init (void)
{
/* Nothing needed AFAIK */
}
GdkImage*
gdk_image_new (GdkImageType type,
GdkVisual *visual,
gint width,
gint height)
{
GdkImage *image;
GdkImagePrivateWin32 *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: %dx%d %s\n",
width, height,
(type == GDK_IMAGE_SHARED ? "shared" :
(type == GDK_IMAGE_SHARED_PIXMAP ? "shared_pixmap" :
"???"))));
image = g_object_new (gdk_image_get_type (), NULL);
private = PRIVATE_DATA (image);
image->type = type;
image->visual = visual;
image->width = width;
image->height = height;
image->depth = visual->depth;
xvisual = ((GdkVisualPrivate*) visual)->xvisual;
bmi.bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = width;
bmi.bmiHeader.biHeight = -height;
bmi.bmiHeader.biPlanes = 1;
if (image->depth == 15)
bmi.bmiHeader.biBitCount = 16;
else
bmi.bmiHeader.biBitCount = image->depth;
if (image->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;
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 (image->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;
}
else if (image->depth == 16)
{
bmi.u.bmiMasks[0] = visual->red_mask;
bmi.u.bmiMasks[1] = visual->green_mask;
bmi.u.bmiMasks[2] = visual->blue_mask;
}
}
private->hbitmap = CreateDIBSection (gdk_display_hdc, (BITMAPINFO *) &bmi,
iUsage, &image->mem, NULL, 0);
if (private->hbitmap == NULL)
{
WIN32_GDI_FAILED ("CreateDIBSection");
g_free (image);
return NULL;
}
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_new: depth = %d", image->depth);
g_assert_not_reached ();
}
image->byte_order = GDK_LSB_FIRST;
if (image->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->hbitmap, image->mem, image->bpl));
return image;
}
GdkImage*
gdk_image_get (GdkWindow *window,
gint x,
gint y,
gint width,
gint height)
{
GdkImage *image;
GdkImagePrivateWin32 *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 (GDK_IS_WINDOW (window), NULL);
if (GDK_WINDOW_DESTROYED (window))
return NULL;
GDK_NOTE (MISC, g_print ("gdk_image_get: %#x %dx%d@+%d+%d\n",
GDK_DRAWABLE_HANDLE (window), width, height, x, y));
image = g_object_new (gdk_image_get_type (), NULL);
private = PRIVATE_DATA (image);
image->type = GDK_IMAGE_SHARED;
image->visual = gdk_drawable_get_visual (window);
image->width = width;
image->height = height;
/* This function is called both to blit from a window and from
* a pixmap.
*/
if (GDK_IS_PIXMAP (window))
{
if ((hdc = CreateCompatibleDC (NULL)) == NULL)
{
WIN32_GDI_FAILED ("CreateCompatibleDC");
g_free (image);
return NULL;
}
if ((oldbitmap1 = SelectObject (hdc, GDK_PIXMAP_HBITMAP (window))) == NULL)
{
WIN32_GDI_FAILED ("SelectObject");
DeleteDC (hdc);
g_free (image);
return NULL;
}
GetObject (GDK_PIXMAP_HBITMAP (window), 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 (GDK_WINDOW_HWND (window))) == NULL)
{
WIN32_GDI_FAILED ("GetDC");
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)
{
WIN32_GDI_FAILED ("CreateCompatibleDC");
if (GDK_IS_PIXMAP (window))
{
SelectObject (hdc, oldbitmap1);
DeleteDC (hdc);
}
else
{
ReleaseDC (GDK_WINDOW_HWND (window), 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->hbitmap = CreateDIBSection (hdc, (BITMAPINFO *) &bmi, iUsage,
&image->mem, NULL, 0)) == NULL)
{
WIN32_GDI_FAILED ("CreateDIBSection");
DeleteDC (memdc);
if (GDK_IS_PIXMAP (window))
{
SelectObject (hdc, oldbitmap1);
DeleteDC (hdc);
}
else
{
ReleaseDC (GDK_WINDOW_HWND (window), hdc);
}
g_free (image);
return NULL;
}
if ((oldbitmap2 = SelectObject (memdc, private->hbitmap)) == NULL)
{
WIN32_GDI_FAILED ("SelectObject");
DeleteObject (private->hbitmap);
DeleteDC (memdc);
if (GDK_IS_PIXMAP (window))
{
SelectObject (hdc, oldbitmap1);
DeleteDC (hdc);
}
else
{
ReleaseDC (GDK_WINDOW_HWND (window), hdc);
}
g_free (image);
return NULL;
}
if (!BitBlt (memdc, 0, 0, width, height, hdc, x, y, SRCCOPY))
{
WIN32_GDI_FAILED ("BitBlt");
SelectObject (memdc, oldbitmap2);
DeleteObject (private->hbitmap);
DeleteDC (memdc);
if (GDK_IS_PIXMAP (window))
{
SelectObject (hdc, oldbitmap1);
DeleteDC (hdc);
}
else
{
ReleaseDC (GDK_WINDOW_HWND (window), hdc);
}
g_free (image);
return NULL;
}
if (SelectObject (memdc, oldbitmap2) == NULL)
WIN32_GDI_FAILED ("SelectObject");
if (!DeleteDC (memdc))
WIN32_GDI_FAILED ("DeleteDC");
if (GDK_IS_PIXMAP (window))
{
SelectObject (hdc, oldbitmap1);
DeleteDC (hdc);
}
else
{
ReleaseDC (GDK_WINDOW_HWND (window), 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)/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->hbitmap, image->mem, image->bpl));
return image;
}
guint32
gdk_image_get_pixel (GdkImage *image,
gint x,
gint y)
{
guint32 pixel;
g_return_val_if_fail (GDK_IS_IMAGE (image), 0);
if (!(x >= 0 && x < image->width && y >= 0 && y < image->height))
return 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)
{
g_return_if_fail (image != NULL);
if (!(x >= 0 && x < image->width && y >= 0 && y < image->height))
return;
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);
}
}
}
static void
gdk_win32_image_destroy (GdkImage *image)
{
GdkImagePrivateWin32 *private;
g_return_if_fail (GDK_IS_IMAGE (image));
private = PRIVATE_DATA (image);
if (private == NULL) /* This means that gdk_image_exit() destroyed the
* image already, and now we're called a second
* time from _finalize()
*/
return;
GDK_NOTE (MISC, g_print ("gdk_win32_image_destroy: %#x%s\n",
private->hbitmap,
(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->hbitmap))
WIN32_GDI_FAILED ("DeleteObject");
break;
default:
g_assert_not_reached ();
}
g_free (private);
image->windowing_data = NULL;
}
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