diff --git a/dlls/gdi/bitblt.c b/dlls/gdi/bitblt.c index 668adae067..d15b39a64c 100644 --- a/dlls/gdi/bitblt.c +++ b/dlls/gdi/bitblt.c @@ -84,25 +84,68 @@ BOOL WINAPI StretchBlt( HDC hdcDst, INT xDst, INT yDst, BOOL ret = FALSE; DC *dcDst, *dcSrc; - if ((dcSrc = DC_GetDCUpdate( hdcSrc ))) GDI_ReleaseObj( hdcSrc ); - /* FIXME: there is a race condition here */ - if ((dcDst = DC_GetDCUpdate( hdcDst ))) + if ((dcDst = DC_GetDCUpdate( hdcDst )) && dcDst->funcs->pStretchBlt) { - dcSrc = DC_GetDCPtr( hdcSrc ); - - TRACE("%p %d,%d %dx%d -> %p %d,%d %dx%d rop=%06lx\n", - hdcSrc, xSrc, ySrc, widthSrc, heightSrc, - hdcDst, xDst, yDst, widthDst, heightDst, rop ); - - if (dcSrc) { - if (dcDst->funcs->pStretchBlt) - ret = dcDst->funcs->pStretchBlt( dcDst->physDev, xDst, yDst, widthDst, heightDst, - dcSrc->physDev, xSrc, ySrc, widthSrc, heightSrc, - rop ); - GDI_ReleaseObj( hdcSrc ); - } GDI_ReleaseObj( hdcDst ); + /* FIXME: there is a race condition here */ + if ((dcSrc = DC_GetDCUpdate( hdcSrc ))) + { + dcDst = DC_GetDCPtr( hdcDst ); + + TRACE("%p %d,%d %dx%d -> %p %d,%d %dx%d rop=%06lx\n", + hdcSrc, xSrc, ySrc, widthSrc, heightSrc, + hdcDst, xDst, yDst, widthDst, heightDst, rop ); + + ret = dcDst->funcs->pStretchBlt( dcDst->physDev, xDst, yDst, widthDst, heightDst, + dcSrc->physDev, xSrc, ySrc, widthSrc, heightSrc, + rop ); + GDI_ReleaseObj( hdcDst ); + GDI_ReleaseObj( hdcSrc ); + } } + else if(dcDst && dcDst->funcs->pStretchDIBits) + { + BITMAP bm; + BITMAPINFOHEADER info_hdr; + HBITMAP hbm; + LPVOID bits; + INT lines; + + GDI_ReleaseObj( hdcDst ); + + if(GetObjectType( hdcSrc ) != OBJ_MEMDC) return FALSE; + + GetObjectW(GetCurrentObject(hdcSrc, OBJ_BITMAP), sizeof(bm), &bm); + + info_hdr.biSize = sizeof(info_hdr); + info_hdr.biWidth = bm.bmWidth; + info_hdr.biHeight = bm.bmHeight; + info_hdr.biPlanes = 1; + info_hdr.biBitCount = 32; + info_hdr.biCompression = BI_RGB; + info_hdr.biSizeImage = 0; + info_hdr.biXPelsPerMeter = 0; + info_hdr.biYPelsPerMeter = 0; + info_hdr.biClrUsed = 0; + info_hdr.biClrImportant = 0; + + if(!(bits = HeapAlloc(GetProcessHeap(), 0, bm.bmHeight * bm.bmWidth * 4))) + return FALSE; + + /* Select out the src bitmap before calling GetDIBits */ + hbm = SelectObject(hdcSrc, GetStockObject(DEFAULT_BITMAP)); + GetDIBits(hdcSrc, hbm, 0, bm.bmHeight, bits, (BITMAPINFO*)&info_hdr, DIB_RGB_COLORS); + SelectObject(hdcSrc, hbm); + + lines = StretchDIBits(hdcDst, xDst, yDst, widthDst, heightDst, xSrc, ySrc, widthSrc, heightSrc, + bits, (BITMAPINFO*)&info_hdr, DIB_RGB_COLORS, rop); + + HeapFree(GetProcessHeap(), 0, bits); + return (lines == bm.bmHeight); + } + else if(dcDst) + GDI_ReleaseObj( hdcDst ); + return ret; }