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gdi32: Avoid locking in CreateCompatibleBitmap.

oldstable
Alexandre Julliard 2008-02-05 17:34:56 +01:00
parent e5b4c0f84b
commit b962fca75c
1 changed files with 17 additions and 18 deletions
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35
dlls/gdi32/bitmap.c
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@ -132,13 +132,10 @@ HBITMAP WINAPI CreateBitmap( INT width, INT height, UINT planes,
HBITMAP WINAPI CreateCompatibleBitmap( HDC hdc, INT width, INT height)
{
HBITMAP hbmpRet = 0;
DC *dc;
TRACE("(%p,%d,%d) =\n", hdc, width, height);
if (!(dc = DC_GetDCPtr(hdc))) return 0;
if (GDIMAGIC( dc->header.wMagic ) != MEMORY_DC_MAGIC)
if (GetObjectType( hdc ) != OBJ_MEMDC)
{
hbmpRet = CreateBitmap(width, height,
GetDeviceCaps(hdc, PLANES),
@ -147,14 +144,18 @@ HBITMAP WINAPI CreateCompatibleBitmap( HDC hdc, INT width, INT height)
}
else /* Memory DC */
{
BITMAPOBJ *bmp = GDI_GetObjPtr( dc->hBitmap, BITMAP_MAGIC );
DIBSECTION dib;
HBITMAP bitmap = GetCurrentObject( hdc, OBJ_BITMAP );
INT size = GetObjectW( bitmap, sizeof(dib), &dib );
if (!bmp->dib)
if (!size) return 0;
if (size == sizeof(BITMAP))
{
/* A device-dependent bitmap is selected in the DC */
hbmpRet = CreateBitmap(width, height,
bmp->bitmap.bmPlanes,
bmp->bitmap.bmBitsPixel,
dib.dsBm.bmPlanes,
dib.dsBm.bmBitsPixel,
NULL);
}
else
@ -174,19 +175,19 @@ HBITMAP WINAPI CreateCompatibleBitmap( HDC hdc, INT width, INT height)
bi->bmiHeader.biSize = sizeof(bi->bmiHeader);
bi->bmiHeader.biWidth = width;
bi->bmiHeader.biHeight = height;
bi->bmiHeader.biPlanes = bmp->dib->dsBmih.biPlanes;
bi->bmiHeader.biBitCount = bmp->dib->dsBmih.biBitCount;
bi->bmiHeader.biCompression = bmp->dib->dsBmih.biCompression;
bi->bmiHeader.biPlanes = dib.dsBmih.biPlanes;
bi->bmiHeader.biBitCount = dib.dsBmih.biBitCount;
bi->bmiHeader.biCompression = dib.dsBmih.biCompression;
bi->bmiHeader.biSizeImage = 0;
bi->bmiHeader.biXPelsPerMeter = bmp->dib->dsBmih.biXPelsPerMeter;
bi->bmiHeader.biYPelsPerMeter = bmp->dib->dsBmih.biYPelsPerMeter;
bi->bmiHeader.biClrUsed = bmp->dib->dsBmih.biClrUsed;
bi->bmiHeader.biClrImportant = bmp->dib->dsBmih.biClrImportant;
bi->bmiHeader.biXPelsPerMeter = dib.dsBmih.biXPelsPerMeter;
bi->bmiHeader.biYPelsPerMeter = dib.dsBmih.biYPelsPerMeter;
bi->bmiHeader.biClrUsed = dib.dsBmih.biClrUsed;
bi->bmiHeader.biClrImportant = dib.dsBmih.biClrImportant;
if (bi->bmiHeader.biCompression == BI_BITFIELDS)
{
/* Copy the color masks */
CopyMemory(bi->bmiColors, bmp->dib->dsBitfields, 3 * sizeof(DWORD));
CopyMemory(bi->bmiColors, dib.dsBitfields, 3 * sizeof(DWORD));
}
else if (bi->bmiHeader.biBitCount <= 8)
{
@ -198,9 +199,7 @@ HBITMAP WINAPI CreateCompatibleBitmap( HDC hdc, INT width, INT height)
HeapFree(GetProcessHeap(), 0, bi);
}
}
GDI_ReleaseObj(dc->hBitmap);
}
DC_ReleaseDCPtr( dc );
TRACE("\t\t%p\n", hbmpRet);
return hbmpRet;