[jgardou] 47735: [GDI32] - DIB data is not mandatory in CreateDIBitmap [WIN32K] - Simplify GreCreateDIBitmap - Surface data should be 16 bits aligned
Author: jgardou Date: Thu Jun 10 14:32:05 2010 New Revision: 47735
URL: http://svn.reactos.org/svn/reactos?rev=47735&view=rev Log: [GDI32] - DIB data is not mandatory in CreateDIBitmap [WIN32K] - Simplify GreCreateDIBitmap - Surface data should be 16 bits aligned
Modified: branches/reactos-yarotows/dll/win32/gdi32/objects/bitmap.c branches/reactos-yarotows/subsystems/win32/win32k/eng/surface.c branches/reactos-yarotows/subsystems/win32/win32k/objects/dibobj.c
Modified: branches/reactos-yarotows/dll/win32/gdi32/objects/bitmap.c URL: http://svn.reactos.org/svn/reactos/branches/reactos-yarotows/dll/win32/gdi32... ============================================================================== --- branches/reactos-yarotows/dll/win32/gdi32/objects/bitmap.c [iso-8859-1] (original) +++ branches/reactos-yarotows/dll/win32/gdi32/objects/bitmap.c [iso-8859-1] Thu Jun 10 14:32:05 2010 @@ -461,8 +461,8 @@ 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;
@@ -477,17 +477,20 @@ // For Icm support. // GdiGetHandleUserData(hdc, GDI_OBJECT_TYPE_DC, (PVOID)&pDc_Attr))
- _SEH2_TRY - { - cjBmpScanSize = DIB_BitmapBitsSize(Data); - CalculateColorTableSize(&Data->bmiHeader, &ColorUse, &InfoSize); - InfoSize += Data->bmiHeader.biSize; - } - _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) - { - Status = _SEH2_GetExceptionCode(); - } - _SEH2_END + if(Data) + { + _SEH2_TRY + { + cjBmpScanSize = DIB_BitmapBitsSize(Data); + CalculateColorTableSize(&Data->bmiHeader, &ColorUse, &InfoSize); + InfoSize += Data->bmiHeader.biSize; + } + _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) + { + Status = _SEH2_GetExceptionCode(); + } + _SEH2_END + }
if(!NT_SUCCESS(Status)) {
Modified: branches/reactos-yarotows/subsystems/win32/win32k/eng/surface.c URL: http://svn.reactos.org/svn/reactos/branches/reactos-yarotows/subsystems/win3... ============================================================================== --- branches/reactos-yarotows/subsystems/win32/win32k/eng/surface.c [iso-8859-1] (original) +++ branches/reactos-yarotows/subsystems/win32/win32k/eng/surface.c [iso-8859-1] Thu Jun 10 14:32:05 2010 @@ -203,12 +203,12 @@ 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 */ @@ -236,7 +236,7 @@ (fjBitmap & BMF_NOZEROINIT) ? 0 : FL_ZERO_MEMORY, pso->cjBits, TAG_DIB); - + /* Free the section already, but keep the mapping */ if (pvBits) EngFreeSectionMem(pvSection, NULL); }
Modified: branches/reactos-yarotows/subsystems/win32/win32k/objects/dibobj.c URL: http://svn.reactos.org/svn/reactos/branches/reactos-yarotows/subsystems/win3... ============================================================================== --- branches/reactos-yarotows/subsystems/win32/win32k/objects/dibobj.c [iso-8859-1] (original) +++ branches/reactos-yarotows/subsystems/win32/win32k/objects/dibobj.c [iso-8859-1] Thu Jun 10 14:32:05 2010 @@ -1177,68 +1177,39 @@ PDC Dc; HBITMAP Bmp; WORD bpp; - - if (!hDc) // CreateBitmap + HDC hdcDest; + + if (!hDc) /* 1bpp monochrome bitmap */ { // Should use System Bitmap DC hSystemBM, with CreateCompatibleDC for this. - hDc = IntGdiCreateDC(NULL, NULL, NULL, NULL,FALSE); - if (!hDc) - { - SetLastWin32Error(ERROR_INVALID_HANDLE); + hdcDest = IntGdiCreateDC(NULL, NULL, NULL, NULL,FALSE); + if(!hdcDest) + { 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 - { - Dc = DC_LockDc(hDc); - 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. - */ - 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; - } - } - } - Bmp = IntCreateDIBitmap(Dc, cx, cy, bpp, fInit, pjInit, pbmi, iUsage); - DC_UnlockDc(Dc); + } + else + { + hdcDest = hDc; + } + + Dc = DC_LockDc(hdcDest); + if (!Dc) + { + SetLastWin32Error(ERROR_INVALID_HANDLE); + return NULL; + } + /* 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 + bpp = 0; + Bmp = IntCreateDIBitmap(Dc, cx, cy, bpp, fInit, pjInit, pbmi, iUsage); + DC_UnlockDc(Dc); + + if(!hDc) + { + NtGdiDeleteObjectApp(hdcDest); } return Bmp; }
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