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user32: Do not use DIB APIs for bitmap bits in a device dependent format.

This commit is contained in:
Dmitry Timoshkov 2007-01-23 16:47:45 +08:00 committed by Alexandre Julliard
parent 81a294f76d
commit 7670d76690
1 changed files with 12 additions and 64 deletions
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76
dlls/user32/cursoricon.c
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@ -1236,24 +1236,7 @@ HICON16 WINAPI CreateIcon16( HINSTANCE16 hInstance, INT16 nWidth,
* Success: handle to an icon
* Failure: NULL
*
* BUGS
*
* - The provided bitmaps are not resized!
* - The documentation says the lpXORbits bitmap must be in a device
* dependent format. But we must still resize it and perform depth
* conversions if necessary.
* - I'm a bit unsure about the how the 'device dependent format' thing works.
* I did some tests on windows and found that if you provide a 16bpp bitmap
* in lpXORbits, then its format but be 565 RGB if the screen's bit depth
* is 16bpp but it must be 555 RGB if the screen's bit depth is anything
* else. I don't know if this is part of the GDI specs or if this is a
* quirk of the graphics card driver.
* - You may think that we check whether the bit depths match or not
* as an optimization. But the truth is that the conversion using
* CreateDIBitmap does not work for some bit depth (e.g. 8bpp) and I have
* no idea why.
* - I'm pretty sure that all the things we do in CreateIcon should
* also be done in CreateIconIndirect...
* FIXME: Do we need to resize the bitmaps?
*/
HICON WINAPI CreateIcon(
HINSTANCE hInstance, /* [in] the application's hInstance */
@ -1264,58 +1247,23 @@ HICON WINAPI CreateIcon(
LPCVOID lpANDbits, /* [in] a monochrome bitmap representing the icon's mask */
LPCVOID lpXORbits) /* [in] the icon's 'color' bitmap */
{
ICONINFO iinfo;
HICON hIcon;
HDC hdc;
TRACE_(icon)("%dx%dx%d, xor=%p, and=%p\n",
nWidth, nHeight, bPlanes * bBitsPixel, lpXORbits, lpANDbits);
TRACE_(icon)("%dx%d, planes %d, bpp %d, xor %p, and %p\n",
nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits, lpANDbits);
hdc=GetDC(0);
if (!hdc)
return 0;
iinfo.fIcon = TRUE;
iinfo.xHotspot = ICON_HOTSPOT;
iinfo.yHotspot = ICON_HOTSPOT;
iinfo.hbmMask = CreateBitmap( nWidth, nHeight, 1, 1, lpANDbits );
iinfo.hbmColor = CreateBitmap( nWidth, nHeight, bPlanes, bBitsPixel, lpXORbits );
if (GetDeviceCaps(hdc,BITSPIXEL)==bBitsPixel) {
CURSORICONINFO info;
hIcon = CreateIconIndirect( &iinfo );
info.ptHotSpot.x = ICON_HOTSPOT;
info.ptHotSpot.y = ICON_HOTSPOT;
info.nWidth = nWidth;
info.nHeight = nHeight;
info.nWidthBytes = 0;
info.bPlanes = bPlanes;
info.bBitsPerPixel = bBitsPixel;
DeleteObject( iinfo.hbmMask );
DeleteObject( iinfo.hbmColor );
hIcon=HICON_32(CreateCursorIconIndirect16(0, &info, lpANDbits, lpXORbits));
} else {
ICONINFO iinfo;
BITMAPINFO bmi;
iinfo.fIcon=TRUE;
iinfo.xHotspot=ICON_HOTSPOT;
iinfo.yHotspot=ICON_HOTSPOT;
iinfo.hbmMask=CreateBitmap(nWidth,nHeight,1,1,lpANDbits);
bmi.bmiHeader.biSize=sizeof(bmi.bmiHeader);
bmi.bmiHeader.biWidth=nWidth;
bmi.bmiHeader.biHeight=-nHeight;
bmi.bmiHeader.biPlanes=bPlanes;
bmi.bmiHeader.biBitCount=bBitsPixel;
bmi.bmiHeader.biCompression=BI_RGB;
bmi.bmiHeader.biSizeImage=0;
bmi.bmiHeader.biXPelsPerMeter=0;
bmi.bmiHeader.biYPelsPerMeter=0;
bmi.bmiHeader.biClrUsed=0;
bmi.bmiHeader.biClrImportant=0;
iinfo.hbmColor = CreateDIBitmap( hdc, &bmi.bmiHeader,
CBM_INIT, lpXORbits,
&bmi, DIB_RGB_COLORS );
hIcon=CreateIconIndirect(&iinfo);
DeleteObject(iinfo.hbmMask);
DeleteObject(iinfo.hbmColor);
}
ReleaseDC(0,hdc);
return hIcon;
}