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comctl32: Remove Nx1 assumptions in ImageList_Read.
This commit is contained in:
Mike McCormack
Alexandre Julliard
parent
fc179532f4
commit
e74b0ee910
@ -1884,97 +1884,80 @@ static int may_use_dibsection(HDC hdc) {
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#endif
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/* helper for ImageList_Read, see comments below */
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static HBITMAP _read_bitmap(LPSTREAM pstm,int ilcFlag,int cx,int cy) {
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HDC xdc = 0, hBitmapDC =0;
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static BOOL _read_bitmap(HIMAGELIST himl, HDC hdcIml, LPSTREAM pstm, int ilcFlag)
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{
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HDC xdc = 0;
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BITMAPFILEHEADER bmfh;
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BITMAPINFOHEADER bmih;
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int bitsperpixel,palspace,longsperline,width,height;
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LPBITMAPINFOHEADER bmihc = NULL;
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int result = 0;
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HBITMAP hbitmap = 0, hDIB = 0;
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LPBITMAPINFO bmi = NULL;
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int result = FALSE;
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HBITMAP hDIB = 0;
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LPBYTE bits = NULL;
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int i, j, nheight, nRows, nCols;
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POINT pt;
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int cy = himl->cy;
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if (!SUCCEEDED(IStream_Read ( pstm, &bmfh, sizeof(bmfh), NULL)) ||
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(bmfh.bfType != (('M'<<8)|'B')) ||
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!SUCCEEDED(IStream_Read ( pstm, &bmih, sizeof(bmih), NULL)) ||
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(bmih.biSize != sizeof(bmih))
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)
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if (!SUCCEEDED(IStream_Read ( pstm, &bmfh, sizeof(bmfh), NULL)))
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return result;
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if (bmfh.bfType != (('M'<<8)|'B'))
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return result;
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if (!SUCCEEDED(IStream_Read ( pstm, &bmih, sizeof(bmih), NULL)))
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return result;
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if ((bmih.biSize != sizeof(bmih)))
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return 0;
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bitsperpixel = bmih.biPlanes * bmih.biBitCount;
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if (bitsperpixel<=8)
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palspace = (1<<bitsperpixel)*sizeof(RGBQUAD);
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palspace = (1<<bitsperpixel)*sizeof(RGBQUAD);
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else
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palspace = 0;
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palspace = 0;
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width = bmih.biWidth;
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height = bmih.biHeight;
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bmihc = (LPBITMAPINFOHEADER)LocalAlloc(LMEM_ZEROINIT,sizeof(bmih)+palspace);
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if (!bmihc) goto ret1;
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memcpy(bmihc,&bmih,sizeof(bmih));
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longsperline = ((width*bitsperpixel+31)&~0x1f)>>5;
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bmihc->biSizeImage = (longsperline*height)<<2;
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bmi = Alloc(sizeof(bmih)+palspace);
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if (!bmi)
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return result;
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memcpy(bmi, &bmih, sizeof(bmih));
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longsperline = ((width*bitsperpixel+31)&~0x1f)>>5;
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bmi->bmiHeader.biSizeImage = (longsperline*height)<<2;
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/* read the palette right after the end of the bitmapinfoheader */
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if (palspace)
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if (!SUCCEEDED(IStream_Read ( pstm, bmihc+1, palspace, NULL)))
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goto ret1;
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if (palspace && !SUCCEEDED(IStream_Read(pstm, bmi->bmiColors, palspace, NULL)))
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goto error;
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xdc = GetDC(0);
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#if 0 /* Magic for NxM -> 1x(N*M) not implemented for DIB Sections */
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if ((bitsperpixel>1) &&
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((ilcFlag!=ILC_COLORDDB) && (!ilcFlag || may_use_dibsection(xdc)))
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) {
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hbitmap = CreateDIBSection(xdc,(BITMAPINFO*)bmihc,0,(LPVOID*)&bits,0,0);
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if (!hbitmap)
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goto ret1;
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if (!SUCCEEDED(IStream_Read( pstm, bits, bmihc->biSizeImage, NULL)))
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goto ret1;
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result = 1;
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} else
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#endif
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{
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int i,nwidth,nheight,nRows;
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nwidth = width*(height/cy);
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nheight = cy;
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nRows = (height/cy);
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nheight = cy;
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nRows = height/cy;
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nCols = width/himl->cx;
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if (bitsperpixel==1)
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hbitmap = CreateBitmap(nwidth,nheight,1,1,NULL);
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else
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hbitmap = CreateCompatibleBitmap(xdc,nwidth,nheight);
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hDIB = CreateDIBSection(xdc, bmi, 0, (LPVOID*) &bits, 0, 0);
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if (!hDIB)
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goto error;
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if (!SUCCEEDED(IStream_Read(pstm, bits, bmi->bmiHeader.biSizeImage, NULL)))
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goto error;
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hDIB = CreateDIBSection(xdc,(BITMAPINFO*)bmihc,0,(LPVOID*)&bits,0,0);
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if (!hDIB)
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goto ret1;
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if (!SUCCEEDED(IStream_Read( pstm, bits, bmihc->biSizeImage, NULL)))
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goto ret1;
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hBitmapDC = CreateCompatibleDC(0);
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SelectObject(hBitmapDC, hbitmap);
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/* Copy the NxM bitmap into a 1x(N*M) bitmap we need, linewise */
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/* Do not forget that windows bitmaps are bottom->top */
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TRACE("nRows=%d\n", nRows);
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for (i=0; i < nRows; i++){
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StretchDIBits(hBitmapDC, width*i, 0, width, cy, 0, cy*(nRows-1-i), width, cy, bits,
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(BITMAPINFO*)bmihc, DIB_RGB_COLORS, SRCCOPY);
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/* Copy the NxM bitmap into a 1x(N*M) bitmap we need, linewise */
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/* Do not forget that windows bitmaps are bottom->top */
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for (i=0; i < nRows; i++) {
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for (j=0; j < nCols; j++) {
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imagelist_point_from_index(himl, i*nCols + j, &pt);
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StretchDIBits(hdcIml, pt.x, pt.y, himl->cx, cy,
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j*himl->cx, (nRows - 1 - i)*himl->cy, himl->cx, cy, bits,
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bmi, DIB_RGB_COLORS, SRCCOPY);
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}
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result = 1;
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}
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ret1:
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result = TRUE;
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error:
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if (xdc) ReleaseDC(0,xdc);
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if (bmihc) LocalFree((HLOCAL)bmihc);
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Free(bmi);
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if (hDIB) DeleteObject(hDIB);
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if (hBitmapDC) DeleteDC(hBitmapDC);
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if (!result) {
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if (hbitmap) {
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DeleteObject(hbitmap);
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hbitmap = 0;
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}
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}
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return hbitmap;
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return result;
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}
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/*************************************************************************
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@ -1990,11 +1973,11 @@ ret1:
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* Failure: NULL
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*
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* The format is like this:
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* ILHEAD ilheadstruct;
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* ILHEAD ilheadstruct;
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*
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* for the color image part:
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* BITMAPFILEHEADER bmfh;
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* BITMAPINFOHEADER bmih;
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* BITMAPFILEHEADER bmfh;
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* BITMAPINFOHEADER bmih;
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* only if it has a palette:
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* RGBQUAD rgbs[nr_of_paletted_colors];
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*
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@ -2018,51 +2001,32 @@ HIMAGELIST WINAPI ImageList_Read (LPSTREAM pstm)
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HBITMAP hbmColor=0,hbmMask=0;
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int i;
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TRACE("%p\n", pstm);
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if (!SUCCEEDED(IStream_Read (pstm, &ilHead, sizeof(ILHEAD), NULL)))
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return NULL;
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return NULL;
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if (ilHead.usMagic != (('L' << 8) | 'I'))
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return NULL;
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if (ilHead.usVersion != 0x101) /* probably version? */
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return NULL;
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#if 0
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FIXME(" ilHead.cCurImage = %d\n",ilHead.cCurImage);
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FIXME(" ilHead.cMaxImage = %d\n",ilHead.cMaxImage);
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FIXME(" ilHead.cGrow = %d\n",ilHead.cGrow);
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FIXME(" ilHead.cx = %d\n",ilHead.cx);
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FIXME(" ilHead.cy = %d\n",ilHead.cy);
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FIXME(" ilHead.flags = %x\n",ilHead.flags);
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FIXME(" ilHead.ovls[0] = %d\n",ilHead.ovls[0]);
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FIXME(" ilHead.ovls[1] = %d\n",ilHead.ovls[1]);
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FIXME(" ilHead.ovls[2] = %d\n",ilHead.ovls[2]);
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FIXME(" ilHead.ovls[3] = %d\n",ilHead.ovls[3]);
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#endif
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hbmColor = _read_bitmap(pstm,ilHead.flags & ~ILC_MASK,ilHead.cx,ilHead.cy);
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if (!hbmColor) {
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WARN("failed to read bitmap from stream\n");
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return NULL;
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}
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if (ilHead.flags & ILC_MASK) {
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hbmMask = _read_bitmap(pstm,0,ilHead.cx,ilHead.cy);
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if (!hbmMask) {
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DeleteObject(hbmColor);
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return NULL;
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}
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}
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himl = ImageList_Create (
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ilHead.cx,
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ilHead.cy,
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ilHead.flags,
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1, /* initial */
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ilHead.cGrow
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);
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himl = ImageList_Create(ilHead.cx, ilHead.cy, ilHead.flags, ilHead.cCurImage, ilHead.cMaxImage);
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if (!himl) {
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DeleteObject(hbmColor);
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DeleteObject(hbmMask);
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return NULL;
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}
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if (!_read_bitmap(himl, himl->hdcImage, pstm, ilHead.flags & ~ILC_MASK)) {
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WARN("failed to read bitmap from stream\n");
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return NULL;
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}
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if (ilHead.flags & ILC_MASK) {
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if (!_read_bitmap(himl, himl->hdcMask, pstm, 0)) {
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DeleteObject(hbmColor);
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return NULL;
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}
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}
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SelectObject(himl->hdcImage, hbmColor);
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DeleteObject(himl->hbmImage);
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himl->hbmImage = hbmColor;
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@ -2076,7 +2040,7 @@ HIMAGELIST WINAPI ImageList_Read (LPSTREAM pstm)
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ImageList_SetBkColor(himl,ilHead.bkcolor);
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for (i=0;i<4;i++)
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ImageList_SetOverlayImage(himl,ilHead.ovls[i],i+1);
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ImageList_SetOverlayImage(himl,ilHead.ovls[i],i+1);
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return himl;
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}
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