ReactOS Development > Doxygen
Definition at line 1570 of file olepicture.c. Referenced by OLEPictureImpl_Save(). {
ICONINFO infoIcon;
int iSuccess = 0;
*ppBuffer = NULL; *pLength = 0;
if (GetIconInfo(hIcon, &infoIcon)) {
HDC hDC;
BITMAPINFO * pInfoBitmap;
unsigned char * pIconData = NULL;
unsigned int iDataSize = 0;
pInfoBitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
/* Find out icon size */
hDC = GetDC(0);
pInfoBitmap->bmiHeader.biSize = sizeof(pInfoBitmap->bmiHeader);
GetDIBits(hDC, infoIcon.hbmColor, 0, 0, NULL, pInfoBitmap, DIB_RGB_COLORS);
if (1) {
/* Auxiliary pointers */
CURSORICONFILEDIR * pIconDir;
CURSORICONFILEDIRENTRY * pIconEntry;
BITMAPINFOHEADER * pIconBitmapHeader;
unsigned int iOffsetPalette;
unsigned int iOffsetColorData;
unsigned int iOffsetMaskData;
unsigned int iLengthScanLineMask;
unsigned int iNumEntriesPalette;
iLengthScanLineMask = ((pInfoBitmap->bmiHeader.biWidth + 31) >> 5) << 2;
/*
FIXME("DEBUG: bitmap size is %d x %d\n",
pInfoBitmap->bmiHeader.biWidth,
pInfoBitmap->bmiHeader.biHeight);
FIXME("DEBUG: bitmap bpp is %d\n",
pInfoBitmap->bmiHeader.biBitCount);
FIXME("DEBUG: bitmap nplanes is %d\n",
pInfoBitmap->bmiHeader.biPlanes);
FIXME("DEBUG: bitmap biSizeImage is %u\n",
pInfoBitmap->bmiHeader.biSizeImage);
*/
/* Let's start with one CURSORICONFILEDIR and one CURSORICONFILEDIRENTRY */
iDataSize += 3 * sizeof(WORD) + sizeof(CURSORICONFILEDIRENTRY) + sizeof(BITMAPINFOHEADER);
pIconData = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, iDataSize);
/* Fill out the CURSORICONFILEDIR */
pIconDir = (CURSORICONFILEDIR *)pIconData;
pIconDir->idType = 1;
pIconDir->idCount = 1;
/* Fill out the CURSORICONFILEDIRENTRY */
pIconEntry = (CURSORICONFILEDIRENTRY *)(pIconData + 3 * sizeof(WORD));
pIconEntry->bWidth = (unsigned char)pInfoBitmap->bmiHeader.biWidth;
pIconEntry->bHeight = (unsigned char)pInfoBitmap->bmiHeader.biHeight;
pIconEntry->bColorCount =
(pInfoBitmap->bmiHeader.biBitCount < 8)
? 1 << pInfoBitmap->bmiHeader.biBitCount
: 0;
pIconEntry->xHotspot = pInfoBitmap->bmiHeader.biPlanes;
pIconEntry->yHotspot = pInfoBitmap->bmiHeader.biBitCount;
pIconEntry->dwDIBSize = 0;
pIconEntry->dwDIBOffset = 3 * sizeof(WORD) + sizeof(CURSORICONFILEDIRENTRY);
/* Fill out the BITMAPINFOHEADER */
pIconBitmapHeader = (BITMAPINFOHEADER *)(pIconData + 3 * sizeof(WORD) + sizeof(CURSORICONFILEDIRENTRY));
*pIconBitmapHeader = pInfoBitmap->bmiHeader;
/* Find out whether a palette exists for the bitmap */
if ( (pInfoBitmap->bmiHeader.biBitCount == 16 && pInfoBitmap->bmiHeader.biCompression == BI_RGB)
|| (pInfoBitmap->bmiHeader.biBitCount == 24)
|| (pInfoBitmap->bmiHeader.biBitCount == 32 && pInfoBitmap->bmiHeader.biCompression == BI_RGB)) {
iNumEntriesPalette = pInfoBitmap->bmiHeader.biClrUsed;
if (iNumEntriesPalette > 256) iNumEntriesPalette = 256;
} else if ((pInfoBitmap->bmiHeader.biBitCount == 16 || pInfoBitmap->bmiHeader.biBitCount == 32)
&& pInfoBitmap->bmiHeader.biCompression == BI_BITFIELDS) {
iNumEntriesPalette = 3;
} else if (pInfoBitmap->bmiHeader.biBitCount <= 8) {
iNumEntriesPalette = 1 << pInfoBitmap->bmiHeader.biBitCount;
} else {
iNumEntriesPalette = 0;
}
/* Add bitmap size and header size to icon data size. */
iOffsetPalette = iDataSize;
iDataSize += iNumEntriesPalette * sizeof(DWORD);
iOffsetColorData = iDataSize;
iDataSize += pIconBitmapHeader->biSizeImage;
iOffsetMaskData = iDataSize;
iDataSize += pIconBitmapHeader->biHeight * iLengthScanLineMask;
pIconBitmapHeader->biSizeImage += pIconBitmapHeader->biHeight * iLengthScanLineMask;
pIconBitmapHeader->biHeight *= 2;
pIconData = HeapReAlloc(GetProcessHeap(), 0, pIconData, iDataSize);
pIconEntry = (CURSORICONFILEDIRENTRY *)(pIconData + 3 * sizeof(WORD));
pIconBitmapHeader = (BITMAPINFOHEADER *)(pIconData + 3 * sizeof(WORD) + sizeof(CURSORICONFILEDIRENTRY));
pIconEntry->dwDIBSize = iDataSize - (3 * sizeof(WORD) + sizeof(CURSORICONFILEDIRENTRY));
/* Get the actual bitmap data from the icon bitmap */
GetDIBits(hDC, infoIcon.hbmColor, 0, pInfoBitmap->bmiHeader.biHeight,
pIconData + iOffsetColorData, pInfoBitmap, DIB_RGB_COLORS);
if (iNumEntriesPalette > 0) {
memcpy(pIconData + iOffsetPalette, pInfoBitmap->bmiColors,
iNumEntriesPalette * sizeof(RGBQUAD));
}
/* Reset all values so that GetDIBits call succeeds */
memset(pIconData + iOffsetMaskData, 0, iDataSize - iOffsetMaskData);
memset(pInfoBitmap, 0, sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD));
pInfoBitmap->bmiHeader.biSize = sizeof(pInfoBitmap->bmiHeader);
/*
if (!(GetDIBits(hDC, infoIcon.hbmMask, 0, 0, NULL, pInfoBitmap, DIB_RGB_COLORS)
&& GetDIBits(hDC, infoIcon.hbmMask, 0, pIconEntry->bHeight,
pIconData + iOffsetMaskData, pInfoBitmap, DIB_RGB_COLORS))) {
printf("ERROR: unable to get bitmap mask (error %u)\n",
GetLastError());
}
*/
GetDIBits(hDC, infoIcon.hbmMask, 0, 0, NULL, pInfoBitmap, DIB_RGB_COLORS);
GetDIBits(hDC, infoIcon.hbmMask, 0, pIconEntry->bHeight, pIconData + iOffsetMaskData, pInfoBitmap, DIB_RGB_COLORS);
/* Write out everything produced so far to the stream */
*ppBuffer = pIconData; *pLength = iDataSize;
iSuccess = 1;
} else {
/*
printf("ERROR: unable to get bitmap information via GetDIBits() (error %u)\n",
GetLastError());
*/
}
/*
Remarks (from MSDN entry on GetIconInfo):
GetIconInfo creates bitmaps for the hbmMask and hbmColor
members of ICONINFO. The calling application must manage
these bitmaps and delete them when they are no longer
necessary.
*/
if (hDC) ReleaseDC(0, hDC);
DeleteObject(infoIcon.hbmMask);
if (infoIcon.hbmColor) DeleteObject(infoIcon.hbmColor);
HeapFree(GetProcessHeap(), 0, pInfoBitmap);
} else {
printf("ERROR: Unable to get icon information (error %u)\n",
GetLastError());
}
return iSuccess;
}
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Generated on Wed May 23 2012 05:13:56 for ReactOS by
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