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[WIN32K]

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- NtGdiGetBitmapBits : Bits we're given are 16 bits aligned.
  - NtGdiGetDIBitsInternal : we must not stretch, for this there is NtGdiStretchDIBitsInternal. Use lower level functions to do the work, there is no need to create HDCs etc...
Now icons are back.

svn path=/branches/reactos-yarotows/; revision=48416
This commit is contained in:
Jérôme Gardou 2010-08-02 16:49:51 +00:00
parent 501947714e
commit 4519685bb8
2 changed files with 64 additions and 63 deletions
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33
subsystems/win32/win32k/objects/bitmaps.c
View file

@ -581,6 +581,36 @@ IntGetBitmapBits(
return ret;
}
VOID
FASTCALL
UnsafeGetBitmapBits(
PSURFACE psurf,
DWORD Bytes,
OUT PBYTE pvBits)
{
PUCHAR pjDst, pjSrc;
LONG lDeltaDst, lDeltaSrc;
ULONG nWidth, nHeight, cBitsPixel;
nWidth = psurf->SurfObj.sizlBitmap.cx;
nHeight = psurf->SurfObj.sizlBitmap.cy;
cBitsPixel = BitsPerFormat(psurf->SurfObj.iBitmapFormat);
/* Get pointers */
pjSrc = psurf->SurfObj.pvScan0;
pjDst = pvBits;
lDeltaSrc = psurf->SurfObj.lDelta;
lDeltaDst = BITMAP_GetWidthBytes(nWidth, cBitsPixel);
while (nHeight--)
{
/* Copy one line */
RtlCopyMemory(pjDst, pjSrc, lDeltaDst);
pjSrc += lDeltaSrc;
pjDst += lDeltaDst;
}
}
LONG APIENTRY
NtGdiGetBitmapBits(
HBITMAP hBitmap,
@ -620,7 +650,8 @@ NtGdiGetBitmapBits(
_SEH2_TRY
{
ProbeForWrite(pUnsafeBits, Bytes, 1);
ret = IntGetBitmapBits(psurf, Bytes, pUnsafeBits);
UnsafeGetBitmapBits(psurf, Bytes, pUnsafeBits);
ret = Bytes;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{

94
subsystems/win32/win32k/objects/dibobj.c
View file

@ -695,7 +695,7 @@ NtGdiGetDIBitsInternal(
Info->bmiHeader.biYPelsPerMeter = 0;
Info->bmiHeader.biClrUsed = 0;
Info->bmiHeader.biClrImportant = 0;
ScanLines = psurf->SurfObj.sizlBitmap.cy;
ScanLines = 1;
/* Get Complete info now */
goto done;
@ -897,8 +897,11 @@ NtGdiGetDIBitsInternal(
{
/* Create a DIBSECTION, blt it, profit */
PVOID pDIBits ;
HBITMAP hBmpDest, hOldDest = NULL, hOldSrc = NULL;
HDC hdcDest = NULL, hdcSrc;
HBITMAP hBmpDest;
PSURFACE psurfDest;
EXLATEOBJ exlo;
RECT rcDest;
POINTL srcPoint;
BOOL ret ;
if (StartScan > psurf->SurfObj.sizlBitmap.cy)
@ -911,7 +914,15 @@ NtGdiGetDIBitsInternal(
ScanLines = min(ScanLines, psurf->SurfObj.sizlBitmap.cy - StartScan);
}
/* Fixup values */
Info->bmiHeader.biWidth = psurf->SurfObj.sizlBitmap.cx;
Info->bmiHeader.biHeight = height < 0 ?
-ScanLines : ScanLines;
/* Create the DIB */
hBmpDest = DIB_CreateDIBSection(pDC, Info, Usage, &pDIBits, NULL, 0, 0);
/* Restore them */
Info->bmiHeader.biWidth = width;
Info->bmiHeader.biHeight = height;
if(!hBmpDest)
{
@ -921,56 +932,25 @@ NtGdiGetDIBitsInternal(
goto done ;
}
if(psurf->hdc)
hdcSrc = psurf->hdc;
else
{
hdcSrc = NtGdiCreateCompatibleDC(0);
if(!hdcSrc)
{
DPRINT1("Error: could not create HDC!\n");
ScanLines = 0;
goto cleanup_blt;
}
hOldSrc = NtGdiSelectBitmap(hdcSrc, hBitmap);
if(!hOldSrc)
{
DPRINT1("Error : Could not Select bitmap\n");
ScanLines = 0;
goto cleanup_blt;
}
}
psurfDest = SURFACE_LockSurface(hBmpDest);
hdcDest = NtGdiCreateCompatibleDC(0);
if(!hdcDest)
{
DPRINT1("Error: could not create HDC!\n");
ScanLines = 0;
goto cleanup_blt;
}
hOldDest = NtGdiSelectBitmap(hdcDest, hBmpDest);
if(!hOldDest)
{
DPRINT1("Error : Could not Select bitmap\n");
ScanLines = 0;
goto cleanup_blt;
}
rcDest.left = 0;
rcDest.top = 0;
rcDest.bottom = ScanLines;
rcDest.right = psurf->SurfObj.sizlBitmap.cx;
ret = GreStretchBltMask(hdcDest,
0,
0,
width,
height,
hdcSrc,
0,
StartScan,
psurf->SurfObj.sizlBitmap.cx,
ScanLines,
SRCCOPY,
0,
NULL,
0,
0);
srcPoint.x = 0;
srcPoint.y = height < 0 ?
psurf->SurfObj.sizlBitmap.cy - (StartScan + ScanLines) : StartScan;
EXLATEOBJ_vInitialize(&exlo, psurf->ppal, psurfDest->ppal, 0, 0, 0);
ret = IntEngCopyBits(&psurfDest->SurfObj,
&psurf->SurfObj,
NULL,
&exlo.xlo,
&rcDest,
&srcPoint);
if(!ret)
ScanLines = 0;
@ -994,18 +974,8 @@ NtGdiGetDIBitsInternal(
}
}
cleanup_blt:
if(hdcSrc && (hdcSrc != psurf->hdc))
{
if(hOldSrc) NtGdiSelectBitmap(hdcSrc, hOldSrc);
NtGdiDeleteObjectApp(hdcSrc);
}
if(hdcSrc)
{
if(hOldDest) NtGdiSelectBitmap(hdcDest, hOldDest);
NtGdiDeleteObjectApp(hdcDest);
}
GreDeleteObject(hBmpDest);
EXLATEOBJ_vCleanup(&exlo);
}
done: