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[GDI32]

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- DIB data is not mandatory in CreateDIBitmap
[WIN32K]
  - Simplify GreCreateDIBitmap
  - Surface data should be 16 bits aligned

svn path=/branches/reactos-yarotows/; revision=47735
This commit is contained in:
Jérôme Gardou 2010-06-10 14:32:05 +00:00
parent cc4ef59c16
commit f57bcb3e25
3 changed files with 43 additions and 69 deletions
Download patch file Download diff file Expand all files Collapse all files

7
dll/win32/gdi32/objects/bitmap.c
View file

@ -461,8 +461,8 @@ CreateDIBitmap( HDC hDC,
LONG width, height, compr, dibsize;
WORD planes, bpp;
// PDC_ATTR pDc_Attr;
UINT InfoSize;
UINT cjBmpScanSize;
UINT InfoSize = 0;
UINT cjBmpScanSize = 0;
HBITMAP hBmp;
NTSTATUS Status = STATUS_SUCCESS;
@ -477,6 +477,8 @@ CreateDIBitmap( HDC hDC,
// For Icm support.
// GdiGetHandleUserData(hdc, GDI_OBJECT_TYPE_DC, (PVOID)&pDc_Attr))
if(Data)
{
_SEH2_TRY
{
cjBmpScanSize = DIB_BitmapBitsSize(Data);
@ -488,6 +490,7 @@ CreateDIBitmap( HDC hDC,
Status = _SEH2_GetExceptionCode();
}
_SEH2_END
}
if(!NT_SUCCESS(Status))
{

4
subsystems/win32/win32k/eng/surface.c
View file

@ -203,12 +203,12 @@ SURFACE_bSetBitmapBits(
if (ulWidth)
{
/* Align the width (Windows compatibility) */
ulWidth = ((((ulWidth << 3) / cBitsPixel) * cBitsPixel + 31) & ~31) >> 3;
ulWidth = ((((ulWidth << 3) / cBitsPixel) * cBitsPixel + 15) & ~15) >> 3;
}
else
{
/* Calculate width from the bitmap width in pixels */
ulWidth = ((pso->sizlBitmap.cx * cBitsPixel + 31) & ~31) >> 3;
ulWidth = ((pso->sizlBitmap.cx * cBitsPixel + 15) & ~15) >> 3;
}
/* Calculate the bitmap size in bytes */

61
subsystems/win32/win32k/objects/dibobj.c
View file

@ -1177,68 +1177,39 @@ GreCreateDIBitmapInternal(
PDC Dc;
HBITMAP Bmp;
WORD bpp;
HDC hdcDest;
if (!hDc) // CreateBitmap
if (!hDc) /* 1bpp monochrome bitmap */
{ // Should use System Bitmap DC hSystemBM, with CreateCompatibleDC for this.
hDc = IntGdiCreateDC(NULL, NULL, NULL, NULL,FALSE);
if (!hDc)
hdcDest = IntGdiCreateDC(NULL, NULL, NULL, NULL,FALSE);
if(!hdcDest)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return NULL;
}
Dc = DC_LockDc(hDc);
if (!Dc)
{
NtGdiDeleteObjectApp(hDc);
SetLastWin32Error(ERROR_INVALID_HANDLE);
return NULL;
}
bpp = 1;
Bmp = IntCreateDIBitmap(Dc, cx, cy, bpp, fInit, pjInit, pbmi, iUsage);
DC_UnlockDc(Dc);
NtGdiDeleteObjectApp(hDc);
}
else // CreateCompatibleBitmap
else
{
Dc = DC_LockDc(hDc);
hdcDest = hDc;
}
Dc = DC_LockDc(hdcDest);
if (!Dc)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return NULL;
}
/* pbmi == null
First create an un-initialised bitmap. The depth of the bitmap
should match that of the hdc and not that supplied in bmih.
*/
/* It's OK to set bpp=0 here, as IntCreateDIBitmap will create a compatible Bitmap
* if bpp != 1 and ignore the real value that was passed */
if (pbmi)
bpp = pbmi->bmiHeader.bV5BitCount;
else
{
if (Dc->dctype != DC_TYPE_MEMORY)
bpp = Dc->ppdev->gdiinfo.cBitsPixel;
else
{
DIBSECTION dibs;
INT Count;
SURFACE *psurf = Dc->dclevel.pSurface;
Count = BITMAP_GetObject(psurf, sizeof(dibs), &dibs);
if (!Count)
bpp = 1;
else
{
if (Count == sizeof(BITMAP))
/* A device-dependent bitmap is selected in the DC */
bpp = dibs.dsBm.bmBitsPixel;
else
/* A DIB section is selected in the DC */
bpp = dibs.dsBmih.biBitCount;
}
}
}
bpp = 0;
Bmp = IntCreateDIBitmap(Dc, cx, cy, bpp, fInit, pjInit, pbmi, iUsage);
DC_UnlockDc(Dc);
if(!hDc)
{
NtGdiDeleteObjectApp(hdcDest);
}
return Bmp;
}