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Authors: Michael Kaufmann <hallo@michael-kaufmann.ch>, Huw Davies <huw@codeweavers.com> 

CreateDIBitmap should return bitmaps at the depth of the supplied dc.
Add a test to exercise this behaviour.
This commit is contained in:
Alexandre Julliard 2004-09-13 19:37:03 +00:00
parent 37f2cc8274
commit cdcdbe5495
6 changed files with 351 additions and 97 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

91
dlls/gdi/dib.c
View File

@ -773,13 +773,15 @@ INT WINAPI GetDIBits(
/***********************************************************************
* CreateDIBitmap (GDI32.@)
*
* Creates a DDB (device dependent bitmap) from a DIB.
* The DDB will have the same color depth as the reference DC.
*/
HBITMAP WINAPI CreateDIBitmap( HDC hdc, const BITMAPINFOHEADER *header,
DWORD init, LPCVOID bits, const BITMAPINFO *data,
UINT coloruse )
{
HBITMAP handle;
BOOL fColor;
DWORD width;
int height;
WORD bpp;
@ -789,91 +791,26 @@ HBITMAP WINAPI CreateDIBitmap( HDC hdc, const BITMAPINFOHEADER *header,
if (DIB_GetBitmapInfo( header, &width, &height, &bpp, &compr ) == -1) return 0;
if (height < 0) height = -height;
/* Check if we should create a monochrome or color bitmap. */
/* We create a monochrome bitmap only if it has exactly 2 */
/* colors, which are black followed by white, nothing else. */
/* In all other cases, we create a color bitmap. */
if (bpp != 1) fColor = TRUE;
else if ((coloruse != DIB_RGB_COLORS) || !data) fColor = FALSE;
if (hdc == NULL)
handle = CreateBitmap( width, height, 1, 1, NULL );
else
{
if (data->bmiHeader.biSize == sizeof(BITMAPINFOHEADER))
{
RGBQUAD *rgb = data->bmiColors;
DWORD col = RGB( rgb->rgbRed, rgb->rgbGreen, rgb->rgbBlue );
/* Check if the first color of the colormap is black */
if ((col == RGB(0,0,0)))
{
rgb++;
col = RGB( rgb->rgbRed, rgb->rgbGreen, rgb->rgbBlue );
/* If the second color is white, create a monochrome bitmap */
fColor = (col != RGB(0xff,0xff,0xff));
}
/* Note : If the first color of the colormap is white
followed by black, we have to create a color bitmap.
If we don't the white will be displayed in black later on!*/
else fColor = TRUE;
}
else if (data->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
{
RGBTRIPLE *rgb = ((BITMAPCOREINFO *)data)->bmciColors;
DWORD col = RGB( rgb->rgbtRed, rgb->rgbtGreen, rgb->rgbtBlue );
if ((col == RGB(0,0,0)))
{
rgb++;
col = RGB( rgb->rgbtRed, rgb->rgbtGreen, rgb->rgbtBlue );
fColor = (col != RGB(0xff,0xff,0xff));
}
else fColor = TRUE;
}
else if (data->bmiHeader.biSize == sizeof(BITMAPV4HEADER))
{ /* FIXME: correct ? */
RGBQUAD *rgb = data->bmiColors;
DWORD col = RGB( rgb->rgbRed, rgb->rgbGreen, rgb->rgbBlue );
/* Check if the first color of the colormap is black */
if ((col == RGB(0,0,0)))
{
rgb++;
col = RGB( rgb->rgbRed, rgb->rgbGreen, rgb->rgbBlue );
/* If the second color is white, create a monochrome bitmap */
fColor = (col != RGB(0xff,0xff,0xff));
}
/* Note : If the first color of the colormap is white
followed by black, we have to create a color bitmap.
If we don't the white will be displayed in black later on!*/
else fColor = TRUE;
}
else
{
ERR("(%ld): wrong/unknown size for data\n",
data->bmiHeader.biSize );
return 0;
}
}
/* Now create the bitmap */
if (!(dc = DC_GetDCPtr( hdc ))) return 0;
if (fColor)
handle = CreateBitmap( width, height, GetDeviceCaps( hdc, PLANES ),
GetDeviceCaps( hdc, BITSPIXEL ), NULL );
else handle = CreateBitmap( width, height, 1, 1, NULL );
handle = CreateCompatibleBitmap( hdc, width, height );
if (handle)
{
if (init == CBM_INIT) SetDIBits( hdc, handle, 0, height, bits, data, coloruse );
else if (!BITMAP_SetOwnerDC( handle, dc ))
else if (hdc && ((dc = DC_GetDCPtr( hdc )) != NULL) )
{
DeleteObject( handle );
handle = 0;
if (!BITMAP_SetOwnerDC( handle, dc ))
{
DeleteObject( handle );
handle = 0;
}
GDI_ReleaseObj( hdc );
}
}
GDI_ReleaseObj( hdc );
return handle;
}

96
dlls/gdi/enhmetafile.c
View File

@ -196,6 +196,55 @@ static const char *get_emr_name(DWORD type)
return NULL;
}
/***********************************************************************
* is_dib_monochrome
*
* Returns whether a DIB can be converted to a monochrome DDB.
*
* A DIB can be converted if its color table contains only black and
* white. Black must be the first color in the color table.
*
* Note : If the first color in the color table is white followed by
* black, we can't convert it to a monochrome DDB with
* SetDIBits, because black and white would be inverted.
*/
static BOOL is_dib_monochrome( const BITMAPINFO* info )
{
if (info->bmiHeader.biBitCount != 1) return FALSE;
if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
{
RGBTRIPLE *rgb = ((BITMAPCOREINFO *) info)->bmciColors;
/* Check if the first color is black */
if ((rgb->rgbtRed == 0) && (rgb->rgbtGreen == 0) && (rgb->rgbtBlue == 0))
{
rgb++;
/* Check if the second color is white */
return ((rgb->rgbtRed == 0xff) && (rgb->rgbtGreen == 0xff)
&& (rgb->rgbtBlue == 0xff));
}
else return FALSE;
}
else /* assume BITMAPINFOHEADER */
{
RGBQUAD *rgb = info->bmiColors;
/* Check if the first color is black */
if ((rgb->rgbRed == 0) && (rgb->rgbGreen == 0) &&
(rgb->rgbBlue == 0) && (rgb->rgbReserved == 0))
{
rgb++;
/* Check if the second color is white */
return ((rgb->rgbRed == 0xff) && (rgb->rgbGreen == 0xff)
&& (rgb->rgbBlue == 0xff) && (rgb->rgbReserved == 0));
}
else return FALSE;
}
}
/****************************************************************************
* EMF_Create_HENHMETAFILE
*/
@ -1619,11 +1668,30 @@ BOOL WINAPI PlayEnhMetaFileRecord(
case EMR_CREATEMONOBRUSH:
{
PEMRCREATEMONOBRUSH pCreateMonoBrush = (PEMRCREATEMONOBRUSH)mr;
BITMAPINFO *pbi = (BITMAPINFO *)((BYTE *)mr + pCreateMonoBrush->offBmi);
HBITMAP hBmp = CreateDIBitmap(0, (BITMAPINFOHEADER *)pbi, CBM_INIT,
(BYTE *)mr + pCreateMonoBrush->offBits, pbi, pCreateMonoBrush->iUsage);
PEMRCREATEMONOBRUSH pCreateMonoBrush = (PEMRCREATEMONOBRUSH)mr;
BITMAPINFO *pbi = (BITMAPINFO *)((BYTE *)mr + pCreateMonoBrush->offBmi);
HBITMAP hBmp;
/* Need to check if the bitmap is monochrome, and if the
two colors are really black and white */
if (is_dib_monochrome(pbi))
{
/* Top-down DIBs have a negative height */
LONG height = pbi->bmiHeader.biHeight;
if (height < 0) height = -height;
hBmp = CreateBitmap(pbi->bmiHeader.biWidth, height, 1, 1, NULL);
SetDIBits(hdc, hBmp, 0, pbi->bmiHeader.biHeight,
(BYTE *)mr + pCreateMonoBrush->offBits, pbi, pCreateMonoBrush->iUsage);
}
else
{
hBmp = CreateDIBitmap(hdc, (BITMAPINFOHEADER *)pbi, CBM_INIT,
(BYTE *)mr + pCreateMonoBrush->offBits, pbi, pCreateMonoBrush->iUsage);
}
(handletable->objectHandle)[pCreateMonoBrush->ihBrush] = CreatePatternBrush(hBmp);
/* CreatePatternBrush created a copy of the bitmap */
DeleteObject(hBmp);
break;
@ -1652,7 +1720,7 @@ BOOL WINAPI PlayEnhMetaFileRecord(
SelectObject(hdcSrc, hBrushOld);
DeleteObject(hBrush);
hBmp = CreateDIBitmap(0, (BITMAPINFOHEADER *)pbi, CBM_INIT,
hBmp = CreateDIBitmap(hdc, (BITMAPINFOHEADER *)pbi, CBM_INIT,
(BYTE *)mr + pBitBlt->offBitsSrc, pbi, pBitBlt->iUsageSrc);
hBmpOld = SelectObject(hdcSrc, hBmp);
@ -1694,7 +1762,7 @@ BOOL WINAPI PlayEnhMetaFileRecord(
SelectObject(hdcSrc, hBrushOld);
DeleteObject(hBrush);
hBmp = CreateDIBitmap(0, (BITMAPINFOHEADER *)pbi, CBM_INIT,
hBmp = CreateDIBitmap(hdc, (BITMAPINFOHEADER *)pbi, CBM_INIT,
(BYTE *)mr + pStretchBlt->offBitsSrc, pbi, pStretchBlt->iUsageSrc);
hBmpOld = SelectObject(hdcSrc, hBmp);
@ -1728,11 +1796,13 @@ BOOL WINAPI PlayEnhMetaFileRecord(
DeleteObject(hBrush);
pbi = (BITMAPINFO *)((BYTE *)mr + pMaskBlt->offBmiMask);
hBmpMask = CreateDIBitmap(0, (BITMAPINFOHEADER *)pbi, CBM_INIT,
(BYTE *)mr + pMaskBlt->offBitsMask, pbi, pMaskBlt->iUsageMask);
hBmpMask = CreateBitmap(pbi->bmiHeader.biWidth, pbi->bmiHeader.biHeight,
1, 1, NULL);
SetDIBits(hdc, hBmpMask, 0, pbi->bmiHeader.biHeight,
(BYTE *)mr + pMaskBlt->offBitsMask, pbi, pMaskBlt->iUsageMask);
pbi = (BITMAPINFO *)((BYTE *)mr + pMaskBlt->offBmiSrc);
hBmp = CreateDIBitmap(0, (BITMAPINFOHEADER *)pbi, CBM_INIT,
hBmp = CreateDIBitmap(hdc, (BITMAPINFOHEADER *)pbi, CBM_INIT,
(BYTE *)mr + pMaskBlt->offBitsSrc, pbi, pMaskBlt->iUsageSrc);
hBmpOld = SelectObject(hdcSrc, hBmp);
MaskBlt(hdc,
@ -1778,11 +1848,13 @@ BOOL WINAPI PlayEnhMetaFileRecord(
DeleteObject(hBrush);
pbi = (BITMAPINFO *)((BYTE *)mr + pPlgBlt->offBmiMask);
hBmpMask = CreateDIBitmap(0, (BITMAPINFOHEADER *)pbi, CBM_INIT,
(BYTE *)mr + pPlgBlt->offBitsMask, pbi, pPlgBlt->iUsageMask);
hBmpMask = CreateBitmap(pbi->bmiHeader.biWidth, pbi->bmiHeader.biHeight,
1, 1, NULL);
SetDIBits(hdc, hBmpMask, 0, pbi->bmiHeader.biHeight,
(BYTE *)mr + pPlgBlt->offBitsMask, pbi, pPlgBlt->iUsageMask);
pbi = (BITMAPINFO *)((BYTE *)mr + pPlgBlt->offBmiSrc);
hBmp = CreateDIBitmap(0, (BITMAPINFOHEADER *)pbi, CBM_INIT,
hBmp = CreateDIBitmap(hdc, (BITMAPINFOHEADER *)pbi, CBM_INIT,
(BYTE *)mr + pPlgBlt->offBitsSrc, pbi, pPlgBlt->iUsageSrc);
hBmpOld = SelectObject(hdcSrc, hBmp);
PlgBlt(hdc,

1
dlls/gdi/tests/.cvsignore
View File

@ -1,4 +1,5 @@
Makefile
bitmap.ok
gdiobj.ok
generated.ok
metafile.ok

1
dlls/gdi/tests/Makefile.in
View File

@ -6,6 +6,7 @@ TESTDLL = gdi32.dll
IMPORTS = user32 gdi32
CTESTS = \
bitmap.c \
gdiobj.c \
generated.c \
metafile.c

161
dlls/gdi/tests/bitmap.c Normal file
View File

@ -0,0 +1,161 @@
/*
* Unit test suite for bitmaps
*
* Copyright 2004 Huw Davies
*
* 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 2.1 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
*/
#include <stdarg.h>
#include <assert.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "wine/test.h"
static void test_createdibitmap(void)
{
HDC hdc, hdcmem;
BITMAPINFOHEADER bmih;
BITMAP bm;
HBITMAP hbm, hbm_colour, hbm_old;
INT screen_depth;
hdc = GetDC(0);
screen_depth = GetDeviceCaps(hdc, BITSPIXEL);
memset(&bmih, 0, sizeof(bmih));
bmih.biSize = sizeof(bmih);
bmih.biWidth = 10;
bmih.biHeight = 10;
bmih.biPlanes = 1;
bmih.biBitCount = 32;
bmih.biCompression = BI_RGB;
/* First create an un-initialised bitmap. The depth of the bitmap
should match that of the hdc and not that supplied in bmih.
*/
/* First try 32 bits */
hbm = CreateDIBitmap(hdc, &bmih, 0, NULL, NULL, 0);
ok(hbm != NULL, "CreateDIBitmap failed\n");
ok(GetObject(hbm, sizeof(bm), &bm), "GetObject failed\n");
ok(bm.bmBitsPixel == screen_depth, "CreateDIBitmap created bitmap of incorrect depth %d != %d\n", bm.bmBitsPixel, screen_depth);
DeleteObject(hbm);
/* Then 16 */
bmih.biBitCount = 16;
hbm = CreateDIBitmap(hdc, &bmih, 0, NULL, NULL, 0);
ok(hbm != NULL, "CreateDIBitmap failed\n");
ok(GetObject(hbm, sizeof(bm), &bm), "GetObject failed\n");
ok(bm.bmBitsPixel == screen_depth, "CreateDIBitmap created bitmap of incorrect depth %d != %d\n", bm.bmBitsPixel, screen_depth);
DeleteObject(hbm);
/* Then 1 */
bmih.biBitCount = 1;
hbm = CreateDIBitmap(hdc, &bmih, 0, NULL, NULL, 0);
ok(hbm != NULL, "CreateDIBitmap failed\n");
ok(GetObject(hbm, sizeof(bm), &bm), "GetObject failed\n");
ok(bm.bmBitsPixel == screen_depth, "CreateDIBitmap created bitmap of incorrect depth %d != %d\n", bm.bmBitsPixel, screen_depth);
DeleteObject(hbm);
/* Now with a monochrome dc we expect a monochrome bitmap */
hdcmem = CreateCompatibleDC(hdc);
/* First try 32 bits */
bmih.biBitCount = 32;
hbm = CreateDIBitmap(hdcmem, &bmih, 0, NULL, NULL, 0);
ok(hbm != NULL, "CreateDIBitmap failed\n");
ok(GetObject(hbm, sizeof(bm), &bm), "GetObject failed\n");
ok(bm.bmBitsPixel == 1, "CreateDIBitmap created bitmap of incorrect depth %d != %d\n", bm.bmBitsPixel, 1);
DeleteObject(hbm);
/* Then 16 */
bmih.biBitCount = 16;
hbm = CreateDIBitmap(hdcmem, &bmih, 0, NULL, NULL, 0);
ok(hbm != NULL, "CreateDIBitmap failed\n");
ok(GetObject(hbm, sizeof(bm), &bm), "GetObject failed\n");
ok(bm.bmBitsPixel == 1, "CreateDIBitmap created bitmap of incorrect depth %d != %d\n", bm.bmBitsPixel, 1);
DeleteObject(hbm);
/* Then 1 */
bmih.biBitCount = 1;
hbm = CreateDIBitmap(hdcmem, &bmih, 0, NULL, NULL, 0);
ok(hbm != NULL, "CreateDIBitmap failed\n");
ok(GetObject(hbm, sizeof(bm), &bm), "GetObject failed\n");
ok(bm.bmBitsPixel == 1, "CreateDIBitmap created bitmap of incorrect depth %d != %d\n", bm.bmBitsPixel, 1);
DeleteObject(hbm);
/* Now select a polychrome bitmap into the dc and we expect
screen_depth bitmaps again */
hbm_colour = CreateCompatibleBitmap(hdc, 1, 1);
hbm_old = SelectObject(hdcmem, hbm_colour);
/* First try 32 bits */
bmih.biBitCount = 32;
hbm = CreateDIBitmap(hdcmem, &bmih, 0, NULL, NULL, 0);
ok(hbm != NULL, "CreateDIBitmap failed\n");
ok(GetObject(hbm, sizeof(bm), &bm), "GetObject failed\n");
ok(bm.bmBitsPixel == screen_depth, "CreateDIBitmap created bitmap of incorrect depth %d != %d\n", bm.bmBitsPixel, screen_depth);
DeleteObject(hbm);
/* Then 16 */
bmih.biBitCount = 16;
hbm = CreateDIBitmap(hdcmem, &bmih, 0, NULL, NULL, 0);
ok(hbm != NULL, "CreateDIBitmap failed\n");
ok(GetObject(hbm, sizeof(bm), &bm), "GetObject failed\n");
ok(bm.bmBitsPixel == screen_depth, "CreateDIBitmap created bitmap of incorrect depth %d != %d\n", bm.bmBitsPixel, screen_depth);
DeleteObject(hbm);
/* Then 1 */
bmih.biBitCount = 1;
hbm = CreateDIBitmap(hdcmem, &bmih, 0, NULL, NULL, 0);
ok(hbm != NULL, "CreateDIBitmap failed\n");
ok(GetObject(hbm, sizeof(bm), &bm), "GetObject failed\n");
ok(bm.bmBitsPixel == screen_depth, "CreateDIBitmap created bitmap of incorrect depth %d != %d\n", bm.bmBitsPixel, screen_depth);
DeleteObject(hbm);
SelectObject(hdcmem, hbm_old);
DeleteObject(hbm_colour);
DeleteDC(hdcmem);
/* If hdc == 0 then we get a 1 bpp bitmap */
bmih.biBitCount = 32;
hbm = CreateDIBitmap(0, &bmih, 0, NULL, NULL, 0);
ok(hbm != NULL, "CreateDIBitmap failed\n");
ok(GetObject(hbm, sizeof(bm), &bm), "GetObject failed\n");
ok(bm.bmBitsPixel == 1, "CreateDIBitmap created bitmap of incorrect depth %d != %d\n", bm.bmBitsPixel, 1);
DeleteObject(hbm);
ReleaseDC(0, hdc);
}
START_TEST(bitmap)
{
test_createdibitmap();
}

98
windows/cursoricon.c
View File

@ -224,6 +224,56 @@ static int bitmap_info_size( const BITMAPINFO * info, WORD coloruse )
}
/***********************************************************************
* is_dib_monochrome
*
* Returns whether a DIB can be converted to a monochrome DDB.
*
* A DIB can be converted if its color table contains only black and
* white. Black must be the first color in the color table.
*
* Note : If the first color in the color table is white followed by
* black, we can't convert it to a monochrome DDB with
* SetDIBits, because black and white would be inverted.
*/
static BOOL is_dib_monochrome( const BITMAPINFO* info )
{
if (info->bmiHeader.biBitCount != 1) return FALSE;
if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
{
RGBTRIPLE *rgb = ((BITMAPCOREINFO *) info)->bmciColors;
/* Check if the first color is black */
if ((rgb->rgbtRed == 0) && (rgb->rgbtGreen == 0) && (rgb->rgbtBlue == 0))
{
rgb++;
/* Check if the second color is white */
return ((rgb->rgbtRed == 0xff) && (rgb->rgbtGreen == 0xff)
&& (rgb->rgbtBlue == 0xff));
}
else return FALSE;
}
else /* assume BITMAPINFOHEADER */
{
RGBQUAD *rgb = info->bmiColors;
/* Check if the first color is black */
if ((rgb->rgbRed == 0) && (rgb->rgbGreen == 0) &&
(rgb->rgbBlue == 0) && (rgb->rgbReserved == 0))
{
rgb++;
/* Check if the second color is white */
return ((rgb->rgbRed == 0xff) && (rgb->rgbGreen == 0xff)
&& (rgb->rgbBlue == 0xff) && (rgb->rgbReserved == 0));
}
else return FALSE;
}
}
/**********************************************************************
* CURSORICON_FindSharedIcon
*/
@ -657,8 +707,17 @@ static HICON CURSORICON_CreateFromResource( HMODULE16 hModule, HGLOBAL16 hObj, L
}
if (!res) { DeleteObject(hXorBits); hXorBits = 0; }
}
} else hXorBits = CreateDIBitmap( screen_dc, &pInfo->bmiHeader,
CBM_INIT, (char*)bmi + size, pInfo, DIB_RGB_COLORS );
} else {
if (is_dib_monochrome(bmi)) {
hXorBits = CreateBitmap(width, height, 1, 1, NULL);
SetDIBits(screen_dc, hXorBits, 0, height,
(char*)bmi + size, pInfo, DIB_RGB_COLORS);
}
else
hXorBits = CreateDIBitmap(screen_dc, &pInfo->bmiHeader,
CBM_INIT, (char*)bmi + size, pInfo, DIB_RGB_COLORS);
}
if( hXorBits )
{
char* xbits = (char *)bmi + size +
@ -700,9 +759,13 @@ static HICON CURSORICON_CreateFromResource( HMODULE16 hModule, HGLOBAL16 hObj, L
}
if (!res) { DeleteObject(hAndBits); hAndBits = 0; }
}
} else hAndBits = CreateDIBitmap( screen_dc, &pInfo->bmiHeader,
CBM_INIT, xbits, pInfo, DIB_RGB_COLORS );
} else {
hAndBits = CreateBitmap(width, height, 1, 1, NULL);
if (hAndBits) SetDIBits(screen_dc, hAndBits, 0, height,
xbits, pInfo, DIB_RGB_COLORS);
}
if( !hAndBits ) DeleteObject( hXorBits );
}
HeapFree( GetProcessHeap(), 0, pInfo );
@ -1170,7 +1233,7 @@ HICON WINAPI CreateIcon(
iinfo.hbmColor = CreateDIBitmap( hdc, &bmi.bmiHeader,
CBM_INIT, lpXORbits,
&bmi, DIB_RGB_COLORS );
hIcon=CreateIconIndirect(&iinfo);
DeleteObject(iinfo.hbmMask);
DeleteObject(iinfo.hbmColor);
@ -1957,7 +2020,7 @@ static void DIB_FixColorsToLoadflags(BITMAPINFO * bmi, UINT loadflags, BYTE pix)
/**********************************************************************
* BITMAP_Load
*/
static HBITMAP BITMAP_Load( HINSTANCE instance,LPCWSTR name, UINT loadflags )
static HBITMAP BITMAP_Load( HINSTANCE instance, LPCWSTR name, UINT loadflags )
{
HBITMAP hbitmap = 0;
HRSRC hRsrc;
@ -1975,6 +2038,7 @@ static HBITMAP BITMAP_Load( HINSTANCE instance,LPCWSTR name, UINT loadflags )
if (HIWORD(name)) return 0;
instance = user32_module;
}
if (!(hRsrc = FindResourceW( instance, name, (LPWSTR)RT_BITMAP ))) return 0;
if (!(handle = LoadResource( instance, hRsrc ))) return 0;
@ -1985,8 +2049,10 @@ static HBITMAP BITMAP_Load( HINSTANCE instance,LPCWSTR name, UINT loadflags )
if (!(ptr = map_fileW( name ))) return 0;
info = (BITMAPINFO *)(ptr + sizeof(BITMAPFILEHEADER));
}
size = bitmap_info_size(info, DIB_RGB_COLORS);
if ((hFix = GlobalAlloc(0, size))) fix_info=GlobalLock(hFix);
if (fix_info) {
BYTE pix;
@ -1994,9 +2060,11 @@ static HBITMAP BITMAP_Load( HINSTANCE instance,LPCWSTR name, UINT loadflags )
pix = *((LPBYTE)info + size);
DIB_FixColorsToLoadflags(fix_info, loadflags, pix);
if (!screen_dc) screen_dc = CreateDCA( "DISPLAY", NULL, NULL, NULL );
if (screen_dc)
{
char *bits = (char *)info + size;
if (loadflags & LR_CREATEDIBSECTION) {
DIBSECTION dib;
hbitmap = CreateDIBSection(screen_dc, fix_info, DIB_RGB_COLORS, NULL, 0, 0);
@ -2005,14 +2073,28 @@ static HBITMAP BITMAP_Load( HINSTANCE instance,LPCWSTR name, UINT loadflags )
DIB_RGB_COLORS);
}
else {
hbitmap = CreateDIBitmap( screen_dc, &fix_info->bmiHeader, CBM_INIT,
bits, fix_info, DIB_RGB_COLORS );
/* If it's possible, create a monochrome bitmap */
LONG height = fix_info->bmiHeader.biHeight;
if (height < 0) height = -height;
if (is_dib_monochrome(fix_info))
hbitmap = CreateBitmap(fix_info->bmiHeader.biWidth, height, 1, 1, NULL);
else
hbitmap = CreateBitmap(fix_info->bmiHeader.biWidth, height,
GetDeviceCaps(screen_dc, PLANES),
GetDeviceCaps(screen_dc, BITSPIXEL), NULL);
SetDIBits(screen_dc, hbitmap, 0, height, bits, info, DIB_RGB_COLORS);
}
}
GlobalUnlock(hFix);
GlobalFree(hFix);
}
if (loadflags & LR_LOADFROMFILE) UnmapViewOfFile( ptr );
return hbitmap;
}