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[win32k] NtGdiSetDIBitsToDeviceInternal:

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- Choose the number of scan lines from the parameter and the bitmap size
- Add scan line offset to the destination rectangle top left corner (fixes drawing images line by line)
- Add debug print for further problem solving (deactivated)

svn path=/trunk/; revision=44741
This commit is contained in:
Gregor Schneider 2009-12-23 17:41:20 +00:00
parent 900787a278
commit 1cb2122720
1 changed files with 10 additions and 5 deletions
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15
reactos/subsystems/win32/win32k/objects/dibobj.c
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@ -1,6 +1,4 @@
/*
* $Id$
*
* ReactOS W32 Subsystem
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
*
@ -489,6 +487,8 @@ NtGdiSetDIBitsToDeviceInternal(
pDestSurf = pSurf ? &pSurf->SurfObj : NULL;
ScanLines = min(ScanLines, abs(bmi->bmiHeader.biHeight) - StartScan);
rcDest.left = XDest;
rcDest.top = YDest;
if (bTransformCoordinates)
@ -499,11 +499,14 @@ NtGdiSetDIBitsToDeviceInternal(
rcDest.top += pDC->ptlDCOrig.y;
rcDest.right = rcDest.left + Width;
rcDest.bottom = rcDest.top + Height;
rcDest.top += StartScan;
ptSource.x = XSrc;
ptSource.y = YSrc;
SourceSize.cx = bmi->bmiHeader.biWidth;
SourceSize.cy = ScanLines; // this one --> abs(bmi->bmiHeader.biHeight) - StartScan
SourceSize.cy = ScanLines;
DIBWidth = DIB_GetDIBWidthBytes(SourceSize.cx, bmi->bmiHeader.biBitCount);
hSourceBitmap = EngCreateBitmap(SourceSize,
@ -556,6 +559,9 @@ NtGdiSetDIBitsToDeviceInternal(
EXLATEOBJ_vInitialize(&exlo, ppalDIB, ppalDDB, 0, 0, 0);
/* Copy the bits */
DPRINT("BitsToDev with dstsurf=(%d|%d) (%d|%d), src=(%d|%d) w=%d h=%d\n",
rcDest.left, rcDest.top, rcDest.right, rcDest.bottom,
ptSource.x, ptSource.y, SourceSize.cx, SourceSize.cy);
Status = IntEngBitBlt(pDestSurf,
pSourceSurf,
NULL,
@ -574,8 +580,7 @@ NtGdiSetDIBitsToDeviceInternal(
Exit:
if (NT_SUCCESS(Status))
{
/* FIXME: Should probably be only the number of lines actually copied */
ret = ScanLines; // this one --> abs(Info->bmiHeader.biHeight) - StartScan;
ret = ScanLines;
}
if (ppalDIB) PALETTE_UnlockPalette(ppalDIB);