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[WIN32K]

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Fix IntCreateCompatibleBitmap, previously when the given DC was a memory DC with a dibsection selected, the function would only work if the dibsection was <= 8 bpp.

svn path=/trunk/; revision=50999
This commit is contained in:
Timo Kreuzer 2011-03-07 22:06:23 +00:00
parent d089825a9f
commit 38e6b4b424
1 changed files with 93 additions and 98 deletions
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191
reactos/subsystems/win32/win32k/objects/bitmaps.c
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@ -233,116 +233,111 @@ IntCreateCompatibleBitmap(
/* MS doc says if width or height is 0, return 1-by-1 pixel, monochrome bitmap */
if (0 == Width || 0 == Height)
{
Bmp = NtGdiGetStockObject(DEFAULT_BITMAP);
return NtGdiGetStockObject(DEFAULT_BITMAP);
}
if (Dc->dctype != DC_TYPE_MEMORY)
{
PSURFACE psurf;
Bmp = GreCreateBitmap(abs(Width),
abs(Height),
1,
Dc->ppdev->gdiinfo.cBitsPixel,
NULL);
psurf = SURFACE_ShareLockSurface(Bmp);
ASSERT(psurf);
/* Set palette */
psurf->ppal = PALETTE_ShareLockPalette(Dc->ppdev->devinfo.hpalDefault);
/* Set flags */
psurf->flags = API_BITMAP;
psurf->hdc = NULL; // Fixme
SURFACE_ShareUnlockSurface(psurf);
}
else
{
if (Dc->dctype != DC_TYPE_MEMORY)
DIBSECTION dibs;
INT Count;
PSURFACE psurf = Dc->dclevel.pSurface;
Count = BITMAP_GetObject(psurf, sizeof(dibs), &dibs);
if (Count == sizeof(BITMAP))
{
PSURFACE psurf;
PSURFACE psurfBmp;
Bmp = GreCreateBitmap(abs(Width),
abs(Height),
1,
Dc->ppdev->gdiinfo.cBitsPixel,
NULL);
psurf = SURFACE_LockSurface(Bmp);
ASSERT(psurf);
/* Set palette */
psurf->ppal = PALETTE_ShareLockPalette(Dc->ppdev->devinfo.hpalDefault);
abs(Height),
1,
dibs.dsBm.bmBitsPixel,
NULL);
psurfBmp = SURFACE_LockSurface(Bmp);
ASSERT(psurfBmp);
/* Assign palette */
psurfBmp->ppal = psurf->ppal;
GDIOBJ_IncrementShareCount((POBJ)psurf->ppal);
/* Set flags */
psurf->flags = API_BITMAP;
psurf->hdc = NULL; // Fixme
SURFACE_UnlockSurface(psurf);
psurfBmp->flags = API_BITMAP;
psurfBmp->hdc = NULL; // Fixme
SURFACE_UnlockSurface(psurfBmp);
}
else
else if (Count == sizeof(DIBSECTION))
{
DIBSECTION dibs;
INT Count;
PSURFACE psurf = Dc->dclevel.pSurface;
Count = BITMAP_GetObject(psurf, sizeof(dibs), &dibs);
/* A DIB section is selected in the DC */
BYTE buf[sizeof(BITMAPINFOHEADER) + 256*sizeof(RGBQUAD)] = {0};
PVOID Bits;
BITMAPINFO* bi = (BITMAPINFO*)buf;
if (Count)
bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
bi->bmiHeader.biWidth = Width;
bi->bmiHeader.biHeight = Height;
bi->bmiHeader.biPlanes = dibs.dsBmih.biPlanes;
bi->bmiHeader.biBitCount = dibs.dsBmih.biBitCount;
bi->bmiHeader.biCompression = dibs.dsBmih.biCompression;
bi->bmiHeader.biSizeImage = 0;
bi->bmiHeader.biXPelsPerMeter = dibs.dsBmih.biXPelsPerMeter;
bi->bmiHeader.biYPelsPerMeter = dibs.dsBmih.biYPelsPerMeter;
bi->bmiHeader.biClrUsed = dibs.dsBmih.biClrUsed;
bi->bmiHeader.biClrImportant = dibs.dsBmih.biClrImportant;
if (bi->bmiHeader.biCompression == BI_BITFIELDS)
{
if (Count == sizeof(BITMAP))
{
PSURFACE psurfBmp;
Bmp = GreCreateBitmap(abs(Width),
abs(Height),
1,
dibs.dsBm.bmBitsPixel,
NULL);
psurfBmp = SURFACE_LockSurface(Bmp);
ASSERT(psurfBmp);
/* Assign palette */
psurfBmp->ppal = psurf->ppal;
GDIOBJ_IncrementShareCount((POBJ)psurf->ppal);
/* Set flags */
psurfBmp->flags = API_BITMAP;
psurfBmp->hdc = NULL; // Fixme
SURFACE_UnlockSurface(psurfBmp);
}
else
{
/* A DIB section is selected in the DC */
BYTE buf[sizeof(BITMAPINFOHEADER) + 256*sizeof(RGBQUAD)] = {0};
PVOID Bits;
BITMAPINFO* bi = (BITMAPINFO*)buf;
bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
bi->bmiHeader.biWidth = Width;
bi->bmiHeader.biHeight = Height;
bi->bmiHeader.biPlanes = dibs.dsBmih.biPlanes;
bi->bmiHeader.biBitCount = dibs.dsBmih.biBitCount;
bi->bmiHeader.biCompression = dibs.dsBmih.biCompression;
bi->bmiHeader.biSizeImage = 0;
bi->bmiHeader.biXPelsPerMeter = dibs.dsBmih.biXPelsPerMeter;
bi->bmiHeader.biYPelsPerMeter = dibs.dsBmih.biYPelsPerMeter;
bi->bmiHeader.biClrUsed = dibs.dsBmih.biClrUsed;
bi->bmiHeader.biClrImportant = dibs.dsBmih.biClrImportant;
if (bi->bmiHeader.biCompression == BI_BITFIELDS)
{
/* Copy the color masks */
RtlCopyMemory(bi->bmiColors, dibs.dsBitfields, 3*sizeof(RGBQUAD));
}
else if (bi->bmiHeader.biBitCount <= 8)
{
/* Copy the color table */
UINT Index;
PPALETTE PalGDI;
if (!psurf->ppal)
{
EngSetLastError(ERROR_INVALID_HANDLE);
return 0;
}
PalGDI = PALETTE_LockPalette(psurf->ppal->BaseObject.hHmgr);
for (Index = 0;
Index < 256 && Index < PalGDI->NumColors;
Index++)
{
bi->bmiColors[Index].rgbRed = PalGDI->IndexedColors[Index].peRed;
bi->bmiColors[Index].rgbGreen = PalGDI->IndexedColors[Index].peGreen;
bi->bmiColors[Index].rgbBlue = PalGDI->IndexedColors[Index].peBlue;
bi->bmiColors[Index].rgbReserved = 0;
}
PALETTE_UnlockPalette(PalGDI);
Bmp = DIB_CreateDIBSection(Dc,
bi,
DIB_RGB_COLORS,
&Bits,
NULL,
0,
0);
return Bmp;
}
}
/* Copy the color masks */
RtlCopyMemory(bi->bmiColors, dibs.dsBitfields, 3*sizeof(RGBQUAD));
}
else if (bi->bmiHeader.biBitCount <= 8)
{
/* Copy the color table */
UINT Index;
PPALETTE PalGDI;
if (!psurf->ppal)
{
EngSetLastError(ERROR_INVALID_HANDLE);
return 0;
}
PalGDI = PALETTE_LockPalette(psurf->ppal->BaseObject.hHmgr);
for (Index = 0;
Index < 256 && Index < PalGDI->NumColors;
Index++)
{
bi->bmiColors[Index].rgbRed = PalGDI->IndexedColors[Index].peRed;
bi->bmiColors[Index].rgbGreen = PalGDI->IndexedColors[Index].peGreen;
bi->bmiColors[Index].rgbBlue = PalGDI->IndexedColors[Index].peBlue;
bi->bmiColors[Index].rgbReserved = 0;
}
PALETTE_UnlockPalette(PalGDI);
}
Bmp = DIB_CreateDIBSection(Dc,
bi,
DIB_RGB_COLORS,
&Bits,
NULL,
0,
0);
return Bmp;
}
}
return Bmp;