Eric Pouech : winhelp: Added support for transparent bitmaps.

Module: wine Branch: master Commit: 2f1048862a379d6688b0141e227b125bc265daed URL: http://source.winehq.org/git/wine.git/?a=commit;h=2f1048862a379d6688b0141e2… Author: Eric Pouech <eric.pouech(a)orange.fr> Date: Wed Apr 30 08:32:06 2008 +0200 winhelp: Added support for transparent bitmaps. --- programs/winhelp/hlpfile.c | 93 +++++++++++++++++++++++++++++++++++++++++++- 1 files changed, 91 insertions(+), 2 deletions(-) diff --git a/programs/winhelp/hlpfile.c b/programs/winhelp/hlpfile.c index 312d932..95ec432 100644 --- a/programs/winhelp/hlpfile.c +++ b/programs/winhelp/hlpfile.c @@ -709,6 +709,89 @@ static BOOL HLPFILE_RtfAddHexBytes(struct RtfData* rd, const void* _ptr, unsigne } /****************************************************************** + * HLPFILE_RtfAddTransparentBitmap + * + * We'll transform a transparent bitmap into an metafile that + * we then transform into RTF + */ +static BOOL HLPFILE_RtfAddTransparentBitmap(struct RtfData* rd, const BITMAPINFO* bi, + const void* pict, unsigned nc) +{ + HDC hdc, hdcMask, hdcMem, hdcEMF; + HBITMAP hbm, hbmMask, hbmOldMask, hbmOldMem; + HENHMETAFILE hEMF; + BOOL ret = FALSE; + void* data; + UINT sz; + + hbm = CreateDIBitmap(hdc = GetDC(0), &bi->bmiHeader, + CBM_INIT, pict, bi, DIB_RGB_COLORS); + + hdcMem = CreateCompatibleDC(hdc); + hbmOldMem = SelectObject(hdcMem, hbm); + + /* create the mask bitmap from the main bitmap */ + hdcMask = CreateCompatibleDC(hdc); + hbmMask = CreateBitmap(bi->bmiHeader.biWidth, bi->bmiHeader.biHeight, 1, 1, NULL); + hbmOldMask = SelectObject(hdcMask, hbmMask); + SetBkColor(hdcMem, + RGB(bi->bmiColors[nc - 1].rgbRed, + bi->bmiColors[nc - 1].rgbGreen, + bi->bmiColors[nc - 1].rgbBlue)); + BitBlt(hdcMask, 0, 0, bi->bmiHeader.biWidth, bi->bmiHeader.biHeight, hdcMem, 0, 0, SRCCOPY); + + /* sets to RGB(0,0,0) the transparent bits in main bitmap */ + SetBkColor(hdcMem, RGB(0,0,0)); + SetTextColor(hdcMem, RGB(255,255,255)); + BitBlt(hdcMem, 0, 0, bi->bmiHeader.biWidth, bi->bmiHeader.biHeight, hdcMask, 0, 0, SRCAND); + + SelectObject(hdcMask, hbmOldMask); + DeleteDC(hdcMask); + + SelectObject(hdcMem, hbmOldMem); + DeleteDC(hdcMem); + + /* we create the bitmap on the fly */ + hdcEMF = CreateEnhMetaFile(NULL, NULL, NULL, NULL); + hdcMem = CreateCompatibleDC(hdcEMF); + + /* sets to RGB(0,0,0) the transparent bits in final bitmap */ + hbmOldMem = SelectObject(hdcMem, hbmMask); + SetBkColor(hdcEMF, RGB(255, 255, 255)); + SetTextColor(hdcEMF, RGB(0, 0, 0)); + BitBlt(hdcEMF, 0, 0, bi->bmiHeader.biWidth, bi->bmiHeader.biHeight, hdcMem, 0, 0, SRCAND); + + /* and copy the remaining bits of main bitmap */ + SelectObject(hdcMem, hbm); + BitBlt(hdcEMF, 0, 0, bi->bmiHeader.biWidth, bi->bmiHeader.biHeight, hdcMem, 0, 0, SRCPAINT); + SelectObject(hdcMem, hbmOldMem); + DeleteDC(hdcMem); + + /* do the cleanup */ + ReleaseDC(0, hdc); + DeleteObject(hbmMask); + DeleteObject(hbm); + + hEMF = CloseEnhMetaFile(hdcEMF); + + /* generate rtf stream */ + sz = GetEnhMetaFileBits(hEMF, 0, NULL); + if (sz && (data = HeapAlloc(GetProcessHeap(), 0, sz))) + { + if (sz == GetEnhMetaFileBits(hEMF, sz, data)) + { + ret = HLPFILE_RtfAddControl(rd, "{\\pict\\emfblip") && + HLPFILE_RtfAddHexBytes(rd, data, sz) && + HLPFILE_RtfAddControl(rd, "}"); + } + HeapFree(GetProcessHeap(), 0, data); + } + DeleteEnhMetaFile(hEMF); + + return ret; +} + +/****************************************************************** * HLPFILE_RtfAddBitmap * */ @@ -719,6 +802,7 @@ static BOOL HLPFILE_RtfAddBitmap(struct RtfData* rd, BYTE* beg, BYTE type, BYTE BITMAPINFO* bi; unsigned long off, csz; unsigned nc = 0; + BOOL clrImportant = FALSE; BOOL ret = FALSE; char tmp[256]; @@ -735,7 +819,8 @@ static BOOL HLPFILE_RtfAddBitmap(struct RtfData* rd, BYTE* beg, BYTE type, BYTE bi->bmiHeader.biWidth = fetch_ulong(&ptr); bi->bmiHeader.biHeight = fetch_ulong(&ptr); bi->bmiHeader.biClrUsed = fetch_ulong(&ptr); - bi->bmiHeader.biClrImportant = fetch_ulong(&ptr); + clrImportant = fetch_ulong(&ptr); + bi->bmiHeader.biClrImportant = (clrImportant > 1) ? clrImportant : 0; bi->bmiHeader.biCompression = BI_RGB; if (bi->bmiHeader.biBitCount > 32) WINE_FIXME("Unknown bit count %u\n", bi->bmiHeader.biBitCount); if (bi->bmiHeader.biPlanes != 1) WINE_FIXME("Unsupported planes %u\n", bi->bmiHeader.biPlanes); @@ -773,7 +858,11 @@ static BOOL HLPFILE_RtfAddBitmap(struct RtfData* rd, BYTE* beg, BYTE type, BYTE } pict_beg = HLPFILE_DecompressGfx(beg + off, csz, bi->bmiHeader.biSizeImage, pack); - + if (clrImportant == 1 && nc > 0) + { + ret = HLPFILE_RtfAddTransparentBitmap(rd, bi, pict_beg, nc); + goto done; + } if (!HLPFILE_RtfAddControl(rd, "{\\pict")) goto done; if (type == 0x06) {