1368 lines
38 KiB
C++
1368 lines
38 KiB
C++
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//+----------------------------------------------------------------------------
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//
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// File:
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// convert.cpp
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//
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// Contents:
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// This module contains the code to read/write DIB, metafile,
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// placeable metafiles, olepres stream, etc... This module also
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// contains routines for converting from one format to other.
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//
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// Classes:
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//
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// Functions:
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//
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// History:
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// 15-Feb-94 alexgo fixed a bug in loading placeable metafiles
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// from a storage (incorrect size calculation).
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// 25-Jan-94 alexgo first pass at converting to Cairo-style
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// memory allocations.
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// 01/11/93 - alexgo - added VDATEHEAP macros to every function
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// 12/08/93 - ChrisWe - fixed wPrepareBitmapHeader not to use
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// (LPOLESTR) cast
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// 12/07/93 - ChrisWe - make default params to StSetSize explicit
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// 12/02/93 - ChrisWe - more formatting; fixed UtHMFToMFStm,
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// 32 bit version, which was doing questionable things
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// with the hBits handle; got rid of the OLESTR
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// uses in favor of (void *) or (BYTE *) as appropriate
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// 11/29/93 - ChrisWe - move CONVERT_SOURCEISICON, returned
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// by UtOlePresStmToContentsStm(), to utils.h
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// 11/28/93 - ChrisWe - begin file inspection and cleanup
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// 06/28/93 - SriniK - created
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//
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//-----------------------------------------------------------------------------
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#include <le2int.h>
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#pragma SEG(ole2)
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NAME_SEG(convert)
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ASSERTDATA
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#ifndef _MAC
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FARINTERNAL_(HMETAFILE) QD2GDI(HANDLE hBits);
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#endif
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void UtGetHEMFFromContentsStm(LPSTREAM lpstm, HANDLE * phdata);
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/************************ FILE FORMATS **********************************
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Normal Metafile (memory or disk based):
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------------ ---------------
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| METAHEADER | Metafile bits |
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------------ ---------------
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Placeable Metafile:
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--------------------- -----------------
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| PLACEABLEMETAHEADER | Normal metafile |
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--------------------- -----------------
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Memory Based DIB:
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------------------ --------------- ----------
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| BITMAPINFOHEADER | RGBQUAD array | DIB bits |
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------------------ --------------- ----------
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DIB file format:
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------------------ ------------------
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| BITMAPFILEHEADER | Memory based DIB |
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------------------ ------------------
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Ole10NativeStream Format:
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-------- ----------------------
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| dwSize | Object's Native data |
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-------- ----------------------
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PBrush Native data format:
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-----------------
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| Dib File format |
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-----------------
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MSDraw Native data format:
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--------------------- ------------- ------------- -----------------
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| mapping mode (WORD) | xExt (WORD) | yExt (WORD) | Normal metafile |
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--------------------- ------------- ------------- -----------------
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*****************************************************************************/
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FARINTERNAL UtGetHGLOBALFromStm(LPSTREAM lpstream, DWORD dwSize,
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HANDLE FAR* lphPres)
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{
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VDATEHEAP();
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HANDLE hBits = NULL;
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void FAR *lpBits = NULL;
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HRESULT error;
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// initialize this for error return cases
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*lphPres = NULL;
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// allocate a new handle
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if (!(hBits = GlobalAlloc(GMEM_MOVEABLE, dwSize))
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|| !(lpBits = (BYTE *)GlobalLock(hBits)))
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{
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error = ResultFromScode(E_OUTOFMEMORY);
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goto errRtn;
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}
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// read the stream into the allocated memory
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if (error = StRead(lpstream, lpBits, dwSize))
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goto errRtn;
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// if we got this far, return new handle
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*lphPres = hBits;
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errRtn:
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// unlock the handle, if it was successfully locked
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if (lpBits)
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GlobalUnlock(hBits);
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// free the handle if there was an error
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if ((error != NOERROR) && hBits)
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GlobalFree(hBits);
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return(error);
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}
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#ifndef _MAC
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FARINTERNAL UtGetHDIBFromDIBFileStm(LPSTREAM pstm, HANDLE FAR* lphdata)
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{
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VDATEHEAP();
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BITMAPFILEHEADER bfh;
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DWORD dwSize; // the size of the data to read
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HRESULT error;
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// read the bitmap file header
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if (error = pstm->Read(&bfh, sizeof(BITMAPFILEHEADER), NULL))
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{
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*lphdata = NULL;
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return(error);
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}
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// calculate the size of the DIB to read
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dwSize = bfh.bfSize - sizeof(BITMAPFILEHEADER);
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// read the DIB
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return(UtGetHGLOBALFromStm(pstm, dwSize, lphdata));
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}
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FARINTERNAL_(HANDLE) UtGetHMFPICT(HMETAFILE hMF, BOOL fDeleteOnError,
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DWORD xExt, DWORD yExt)
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{
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VDATEHEAP();
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HANDLE hmfp; // handle to the new METAFILEPICT
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LPMETAFILEPICT lpmfp; // pointer to the new METAFILEPICT
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// if no METAFILE, nothing to do
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if (hMF == NULL)
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return(NULL);
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// allocate a new handle
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if (!(hmfp = GlobalAlloc(GMEM_MOVEABLE, sizeof(METAFILEPICT))))
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goto errRtn;
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// lock the handle
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if (!(lpmfp = (LPMETAFILEPICT)GlobalLock(hmfp)))
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goto errRtn;
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// make the METAFILEPICT
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lpmfp->hMF = hMF;
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lpmfp->xExt = (int)xExt;
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lpmfp->yExt = (int)yExt;
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lpmfp->mm = MM_ANISOTROPIC;
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GlobalUnlock(hmfp);
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return(hmfp);
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errRtn:
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if (hmfp)
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GlobalFree(hmfp);
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if (fDeleteOnError)
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DeleteMetaFile(hMF);
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return(NULL);
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}
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#endif // _MAC
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//+-------------------------------------------------------------------------
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//
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// Function: UtGetHMFFromMFStm
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//
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// Synopsis:
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//
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// Effects:
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//
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// Arguments: [lpstream] -- stream containing metafile or PICT
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// [dwSize] -- data size within stream
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// [fConvert] -- FALSE for metafile, TRUE for PICT
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// [lphPres] -- placeholder for output metafile
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//
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// Requires: lpstream positioned at start of data
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//
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// Returns: HRESULT
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//
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// Modifies:
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//
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// Algorithm:
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//
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// History: 29-Apr-94 AlexT Add comment block, enabled Mac conversion
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//
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// Notes:
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//
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//--------------------------------------------------------------------------
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FARINTERNAL UtGetHMFFromMFStm(LPSTREAM lpstream, DWORD dwSize,
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BOOL fConvert, HANDLE FAR* lphPres)
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{
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#ifdef WIN32
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LEDebugOut((DEB_ITRACE, "%p _IN UtGetHMFFromMFStm (%p, %d, %d, %p)\n",
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NULL, lpstream, dwSize, fConvert, lphPres));
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VDATEHEAP();
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BYTE *pbMFData = NULL;
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METAHEADER MetaHdr;
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HRESULT hrError;
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// initialize this in case of error return
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*lphPres = NULL;
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// allocate a global handle for the data (since QD2GDI needs a
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// handle)
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pbMFData = (BYTE *) GlobalAlloc(GMEM_FIXED, dwSize);
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if (NULL == pbMFData)
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{
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hrError = ResultFromScode(E_OUTOFMEMORY);
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goto errRtn;
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}
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// read the stream into the bit storage
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ULONG cbRead;
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hrError = lpstream->Read(pbMFData, dwSize, &cbRead);
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if (FAILED(hrError))
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{
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return(hrError);
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}
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// As TOC is being written at the end of presentation, it is essential
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// to place the seek pointer at the end of presentation data. Hence,
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// seek past the extra meta header written by UtHMFToMFStm ignoring error
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lpstream->Read(&MetaHdr, sizeof(MetaHdr), NULL);
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// hrError = StRead(lpstream, pbMFData, dwSize);
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if (hrError != NOERROR)
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{
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goto errRtn;
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}
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if (fConvert)
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{
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// It's a Mac PICT
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*lphPres = QD2GDI((HGLOBAL) pbMFData);
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}
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else
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{
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// It's a Windows metafile
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*lphPres = SetMetaFileBitsEx(dwSize, pbMFData);
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}
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if (*lphPres == NULL)
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hrError = ResultFromScode(E_OUTOFMEMORY);
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errRtn:
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if (NULL != pbMFData)
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{
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GlobalFree(pbMFData);
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}
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LEDebugOut((DEB_ITRACE, "%p OUT UtGetHMFFromMFStm ( %lx ) [ %p ]\n",
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NULL, hrError, *lphPres));
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return(hrError);
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#else
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HANDLE hBits; // handle to the new METAFILE
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void FAR* lpBits = NULL;
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HRESULT error;
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// initialize this in case of error return
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*lphPres = NULL;
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// allocate a new handle, and lock the bits
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if (!(hBits = GlobalAlloc(GMEM_MOVEABLE, dwSize))
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|| !(lpBits = GlobalLock(hBits)))
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{
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error = ResultFromScode(E_OUTOFMEMORY);
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goto errRtn;
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}
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// read the stream into the bit storage
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error = StRead(lpstream, lpBits, dwSize);
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GlobalUnlock(hBits);
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if (error)
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goto errRtn;
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if (!fConvert)
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*lphPres = SetMetaFileBits(hBits);
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else
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{
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if (*lphPres = QD2GDI(hBits))
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{
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// Need to free this handle upon success
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GlobalFree(hBits);
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hBits = NULL;
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}
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}
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if (!*lphPres)
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error = ResultFromScode(E_OUTOFMEMORY);
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errRtn:
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if (error && hBits)
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GlobalFree(hBits);
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return(error);
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#endif // WIN32
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}
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FARINTERNAL UtGetSizeAndExtentsFromPlaceableMFStm(LPSTREAM pstm,
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DWORD FAR* pdwSize, LONG FAR* plWidth, LONG FAR* plHeight)
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{
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VDATEHEAP();
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HRESULT error;
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LARGE_INTEGER large_int; // used to set the seek pointer
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ULARGE_INTEGER ularge_int; // retrieves the new seek position
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LONG xExt; // the x extent of the metafile
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LONG yExt; // the y extent of the metafile
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METAHEADER mfh;
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PLACEABLEMETAHEADER plac_mfh;
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// read the placeable metafile header
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if (error = pstm->Read(&plac_mfh, sizeof(plac_mfh), NULL))
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return(error);
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// check the magic number in the header
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if (plac_mfh.key != PMF_KEY)
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return ResultFromScode(E_FAIL);
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// remember the seek pointer
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LISet32(large_int, 0);
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if (error = pstm->Seek(large_int, STREAM_SEEK_CUR, &ularge_int))
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return(error);
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// read metafile header
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if (error = pstm->Read(&mfh, sizeof(mfh), NULL))
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return(error);
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// seek back to the begining of metafile header
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LISet32(large_int, ularge_int.LowPart);
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if (error = pstm->Seek(large_int, STREAM_SEEK_SET, NULL))
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return(error);
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// calculate the extents of the metafile
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xExt = (plac_mfh.bbox.right - plac_mfh.bbox.left);// metafile units
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yExt = (plac_mfh.bbox.bottom - plac_mfh.bbox.top);// metafile units
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// REVIEW, why aren't there constants for this?
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xExt = (xExt * 2540) / plac_mfh.inch; // HIMETRIC units
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yExt = (yExt * 2540) / plac_mfh.inch; // HIMETRIC units
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if (pdwSize)
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{
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#ifdef WIN16
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//this code seems to work OK on Win16
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*pdwSize = 2 * (mfh.mtSize + mfh.mtHeaderSize);
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// REVIEW NT: review METAHEADER
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#else //WIN32
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//mt.Size is the size in words of the metafile.
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//this fixes bug 6739 (static objects can't be copied
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//or loaded from a file).
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*pdwSize = sizeof(WORD) * mfh.mtSize;
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#endif //WIN16
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}
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if (plWidth)
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*plWidth = xExt;
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if (plHeight)
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*plHeight = yExt;
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return NOERROR;
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}
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FARINTERNAL UtGetHMFPICTFromPlaceableMFStm(LPSTREAM pstm, HANDLE FAR* lphdata)
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{
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VDATEHEAP();
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HRESULT error; // error state so far
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DWORD dwSize; // size of the METAFILE we have to read from the stream
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LONG xExt; // x extent of the METAFILE we have to read from the stream
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LONG yExt; // y extent of the METAFILE we have to read from the stream
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HMETAFILE hMF; // handle to the METAFILE read from the stream
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if (lphdata == NULL)
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return ResultFromScode(E_INVALIDARG);
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// initialize this in case of error return
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*lphdata = NULL;
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// get the size of the METAFILE
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if (error = UtGetSizeAndExtentsFromPlaceableMFStm(pstm, &dwSize,
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&xExt, &yExt))
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return(error);
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// fetch the METAFILE
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if (error = UtGetHMFFromMFStm(pstm, dwSize, FALSE /*fConvert*/,
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(HANDLE FAR *)&hMF))
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return(error);
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// convert to a METAFILEPICT
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if (!(*lphdata = UtGetHMFPICT(hMF, TRUE /*fDeleteOnError*/, xExt,
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yExt)))
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return ResultFromScode(E_OUTOFMEMORY);
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return NOERROR;
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}
|
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|
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/****************************************************************************/
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/***************** Write routines *********************/
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/****************************************************************************/
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#ifndef _MAC
|
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|
|
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//+----------------------------------------------------------------------------
|
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//
|
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// Function:
|
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// iFindDIBits
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//
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// Synopsis:
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// Returns offset from beginning of BITMAPINFOHEADER to the bits
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//
|
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// Arguments:
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// [lpbih] -- pointer to the BITMAPINFOHEADER
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//
|
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// History:
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|
// 09/21/98 - DavidShi
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//
|
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//-----------------------------------------------------------------------------
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FARINTERNAL_(int) iFindDIBits (LPBITMAPINFOHEADER lpbih)
|
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{
|
|
int iPalSize; // size of palette info
|
|
int iNumColors=0; // number of colors in DIB
|
|
|
|
|
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//
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|
// Find the number of colors
|
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//
|
|
switch (lpbih->biBitCount)
|
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{
|
|
case 1:
|
|
iNumColors = 2;
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break;
|
|
case 4:
|
|
iNumColors = 16;
|
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break;
|
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case 8:
|
|
iNumColors = 256;
|
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break;
|
|
|
|
}
|
|
if (lpbih->biSize >= sizeof(BITMAPINFOHEADER))
|
|
{
|
|
if (lpbih->biClrUsed)
|
|
{
|
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iNumColors = (int)lpbih->biClrUsed;
|
|
}
|
|
|
|
}
|
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//
|
|
// Calculate the size of the color table.
|
|
//
|
|
if (lpbih->biSize < sizeof(BITMAPINFOHEADER))
|
|
{
|
|
|
|
iPalSize = iNumColors * sizeof(RGBTRIPLE);
|
|
|
|
}
|
|
else if (lpbih->biCompression==BI_BITFIELDS)
|
|
{
|
|
|
|
if (lpbih->biSize < sizeof(BITMAPV4HEADER))
|
|
{
|
|
iPalSize = 3*sizeof(DWORD);
|
|
}
|
|
else
|
|
iPalSize = 0;
|
|
}
|
|
else
|
|
{
|
|
iPalSize = iNumColors * sizeof(RGBQUAD);
|
|
}
|
|
return lpbih->biSize + iPalSize;
|
|
|
|
}
|
|
//+----------------------------------------------------------------------------
|
|
//
|
|
// Function:
|
|
// wPrepareBitmapHeader, static
|
|
//
|
|
// Synopsis:
|
|
// Initializes the content of a BITMAPFILEHEADER. Forces bitmap
|
|
// bits to immediately follow the header.
|
|
//
|
|
// Arguments:
|
|
// [lpbfh] -- pointer to the BITMAPFILEHEADER to initialize
|
|
// [lpbih] -- pointer to DIB
|
|
// [dwSize] -- the size of the file; obtained by dividing
|
|
// the size of the file by 4 (see win32 documentation.)
|
|
//
|
|
// History:
|
|
// 12/08/93 - ChrisWe - made static
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
|
|
static INTERNAL_(void) wPrepareBitmapFileHeader(LPBITMAPFILEHEADER lpbfh,
|
|
LPBITMAPINFOHEADER lpbih,
|
|
DWORD dwSize )
|
|
{
|
|
VDATEHEAP();
|
|
|
|
// NOTE THESE ARE NOT SUPPOSED TO BE UNICODE
|
|
// see win32s documentation
|
|
((char *)(&lpbfh->bfType))[0] = 'B';
|
|
((char *)(&lpbfh->bfType))[1] = 'M';
|
|
|
|
lpbfh->bfSize = dwSize + sizeof(BITMAPFILEHEADER);
|
|
lpbfh->bfReserved1 = 0;
|
|
lpbfh->bfReserved2 = 0;
|
|
lpbfh->bfOffBits = sizeof(BITMAPFILEHEADER)+iFindDIBits (lpbih);
|
|
}
|
|
|
|
|
|
FARINTERNAL UtHDIBToDIBFileStm(HANDLE hdata, DWORD dwSize, LPSTREAM pstm)
|
|
{
|
|
VDATEHEAP();
|
|
|
|
HRESULT error;
|
|
BITMAPFILEHEADER bfh;
|
|
LPBITMAPINFOHEADER pbih;
|
|
if (!(pbih = (LPBITMAPINFOHEADER)GlobalLock (hdata)))
|
|
return E_OUTOFMEMORY;
|
|
|
|
|
|
wPrepareBitmapFileHeader(&bfh, pbih, dwSize);
|
|
GlobalUnlock (hdata);
|
|
|
|
if (error = pstm->Write(&bfh, sizeof(bfh), NULL))
|
|
return(error);
|
|
|
|
return UtHGLOBALtoStm(hdata, dwSize, pstm);
|
|
}
|
|
|
|
|
|
FARINTERNAL UtDIBStmToDIBFileStm(LPSTREAM pstmDIB, DWORD dwSize,
|
|
LPSTREAM pstmDIBFile)
|
|
{
|
|
VDATEHEAP();
|
|
|
|
HRESULT error;
|
|
|
|
BITMAPFILEHEADER bfh;
|
|
BITMAPINFOHEADER bih;
|
|
ULARGE_INTEGER ularge_int; // indicates how much to copy
|
|
LARGE_INTEGER large_int;
|
|
|
|
error = pstmDIB->Read (&bih, sizeof(bih), NULL);
|
|
LISet32(large_int, 0);
|
|
|
|
wPrepareBitmapFileHeader(&bfh, &bih, dwSize);
|
|
|
|
if (error = pstmDIBFile->Write(&bfh, sizeof(bfh), NULL))
|
|
return(error);
|
|
|
|
if (error = pstmDIBFile->Write(&bih, sizeof(bih), NULL))
|
|
return(error);
|
|
|
|
ULISet32(ularge_int, (dwSize - sizeof(bih)));
|
|
if ((error = pstmDIB->CopyTo(pstmDIBFile, ularge_int, NULL,
|
|
NULL)) == NOERROR)
|
|
StSetSize(pstmDIBFile, 0, TRUE);
|
|
|
|
return(error);
|
|
}
|
|
|
|
|
|
// REVIEW, move these to utils.h so that gen.cpp and mf.cpp can use them for
|
|
// the same purposes
|
|
// REVIEW, add some more comments; is HDIBFILEHDR a windows structure?
|
|
struct tagHDIBFILEHDR
|
|
{
|
|
DWORD dwCompression;
|
|
DWORD dwWidth;
|
|
DWORD dwHeight;
|
|
DWORD dwSize;
|
|
};
|
|
typedef struct tagHDIBFILEHDR HDIBFILEHDR;
|
|
|
|
struct tagOLEPRESSTMHDR
|
|
{
|
|
DWORD dwAspect;
|
|
DWORD dwLindex;
|
|
DWORD dwAdvf;
|
|
};
|
|
typedef struct tagOLEPRESSTMHDR OLEPRESSTMHDR;
|
|
|
|
FARINTERNAL UtHDIBFileToOlePresStm(HANDLE hdata, LPSTREAM pstm)
|
|
{
|
|
VDATEHEAP();
|
|
|
|
HRESULT error;
|
|
HDIBFILEHDR hdfh;
|
|
LPBITMAPFILEHEADER lpbfh;
|
|
LPBITMAPINFOHEADER lpbmi;
|
|
|
|
if (!(lpbfh = (LPBITMAPFILEHEADER)GlobalLock(hdata)))
|
|
return ResultFromScode(E_OUTOFMEMORY);
|
|
|
|
lpbmi = (LPBITMAPINFOHEADER)(((BYTE *)lpbfh) +
|
|
sizeof(BITMAPFILEHEADER));
|
|
|
|
hdfh.dwCompression = 0;
|
|
// REVIEW, these casts are hosed
|
|
UtGetDibExtents(lpbmi, (LPLONG)&hdfh.dwWidth, (LPLONG)&hdfh.dwHeight);
|
|
|
|
hdfh.dwSize = lpbfh->bfSize - sizeof(BITMAPFILEHEADER);
|
|
|
|
// write compesssion, Width, Height, size
|
|
if (error = pstm->Write(&hdfh, sizeof(hdfh), 0))
|
|
goto errRtn;
|
|
|
|
// write the BITMAPINFOHEADER
|
|
// REVIEW, does this size include the data?
|
|
if ((error = pstm->Write(lpbmi, hdfh.dwSize, NULL)) == NOERROR)
|
|
StSetSize(pstm, 0, TRUE);
|
|
|
|
errRtn:
|
|
GlobalUnlock(hdata);
|
|
return(error);
|
|
}
|
|
|
|
#endif // _MAC
|
|
|
|
|
|
|
|
FARINTERNAL UtHMFToMFStm(HANDLE FAR* lphMF, DWORD dwSize, LPSTREAM lpstream)
|
|
{
|
|
VDATEHEAP();
|
|
|
|
HRESULT error;
|
|
|
|
// if there's no handle, there's nothing to do
|
|
if (*lphMF == 0)
|
|
return ResultFromScode(OLE_E_BLANK);
|
|
|
|
#ifdef _MAC
|
|
|
|
AssertSz(GetHandleSize((Handle)*lphMF) == dwSize,
|
|
"pic hdl size not correct");
|
|
HLock( (HANDLE)*lphMF );
|
|
|
|
error = StWrite(lpstream, * (*lphMF), dwSize);
|
|
|
|
// Eric: We should be unlocking, right?
|
|
HUnlock((HANDLE)(*lphMF));
|
|
|
|
if (error != NOERROR)
|
|
AssertSz(0, "StWrite failure" );
|
|
|
|
#else
|
|
|
|
HANDLE hBits = NULL;
|
|
void *lpBits;
|
|
|
|
#ifdef WIN32
|
|
|
|
// allocate memory to hold the METAFILE bits
|
|
// Bug 18346 - OLE16 use to get the Handle size of the Metafile which was a METAHEADER bigger than the
|
|
// actual Metafile. Need to write out this much more worth of data so 16 bit dlls can read the Picture.
|
|
|
|
dwSize += sizeof(METAHEADER);
|
|
|
|
hBits = GlobalAlloc(GPTR, dwSize);
|
|
if (hBits == NULL)
|
|
return ResultFromScode(E_OUTOFMEMORY);
|
|
|
|
if (!(lpBits = GlobalLock(hBits)))
|
|
goto errRtn;
|
|
|
|
// REVIEW, shouldn't we check the returned size?
|
|
// REVIEW, what should we do about enhanced metafiles? If we
|
|
// convert and write those out (which have more features that 32 bit
|
|
// apps might use,) then you can't read the same document on a win16
|
|
// machine....
|
|
GetMetaFileBitsEx((HMETAFILE)*lphMF, dwSize, lpBits);
|
|
|
|
// write the metafile bits out to the stream
|
|
error = StWrite(lpstream, lpBits, dwSize);
|
|
|
|
GlobalUnlock(hBits);
|
|
|
|
errRtn:
|
|
// free the metafile bits
|
|
GlobalFree(hBits);
|
|
|
|
#else
|
|
if (!(hBits = GetMetaFileBits(*lphMF)))
|
|
{
|
|
error = ResultFromScode(E_OUTOFMEMORY);
|
|
goto errRtn;
|
|
}
|
|
|
|
if (lpBits = GlobalLock(hBits))
|
|
{
|
|
error = StWrite(lpstream, lpBits, dwSize);
|
|
GlobalUnlock(hBits);
|
|
}
|
|
else
|
|
error = ResultFromScode(E_OUTOFMEMORY);
|
|
|
|
if (hBits)
|
|
*lphMF = SetMetaFileBits(hBits);
|
|
errRtn:
|
|
|
|
#endif // WIN32
|
|
#endif // _MAC
|
|
|
|
// set the stream size
|
|
if (error == NOERROR)
|
|
StSetSize(lpstream, 0, TRUE);
|
|
|
|
return(error);
|
|
}
|
|
|
|
|
|
//+----------------------------------------------------------------------------
|
|
//
|
|
// Function:
|
|
// wPreparePlaceableMFHeader, static
|
|
//
|
|
// Synopsis:
|
|
// Initializes a PLACEABLEMETAHEADER.
|
|
//
|
|
// Arguments:
|
|
// [lpplac_mfh] -- pointer to the PLACEABLEMETAHEADER to initialize
|
|
// [lWidth] -- Width of the metafile
|
|
// REVIEW, in what units?
|
|
// REVIEW, why is this not unsigned?
|
|
// [lHeight] -- Height of the metafile
|
|
// REVIEW, in what units?
|
|
// REVIEW, why is this not unsigned?
|
|
//
|
|
// Notes:
|
|
//
|
|
// History:
|
|
// 12/08/93 - ChrisWe - made static
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
static INTERNAL_(void) wPreparePlaceableMFHeader(
|
|
PLACEABLEMETAHEADER FAR* lpplac_mfh, LONG lWidth, LONG lHeight)
|
|
{
|
|
VDATEHEAP();
|
|
|
|
WORD FAR* lpw; // roves over the words included in the checksum
|
|
|
|
lpplac_mfh->key = PMF_KEY;
|
|
lpplac_mfh->hmf = 0;
|
|
lpplac_mfh->inch = 576; // REVIEW, where's this magic number from?
|
|
lpplac_mfh->bbox.left = 0;
|
|
lpplac_mfh->bbox.top = 0;
|
|
lpplac_mfh->bbox.right = (int) ((lWidth * lpplac_mfh->inch) / 2540);
|
|
// REVIEW, more magic
|
|
lpplac_mfh->bbox.bottom = (int) ((lHeight * lpplac_mfh->inch) / 2540);
|
|
// REVIEW, more magic
|
|
lpplac_mfh->reserved = NULL;
|
|
|
|
// Compute the checksum of the 10 words that precede the checksum field.
|
|
// It is calculated by XORing zero with those 10 words.
|
|
for(lpplac_mfh->checksum = 0, lpw = (WORD FAR*)lpplac_mfh;
|
|
lpw < (WORD FAR*)&lpplac_mfh->checksum; ++lpw)
|
|
lpplac_mfh->checksum ^= *lpw;
|
|
}
|
|
|
|
|
|
FARINTERNAL UtHMFToPlaceableMFStm(HANDLE FAR* lphMF, DWORD dwSize,
|
|
LONG lWidth, LONG lHeight, LPSTREAM pstm)
|
|
{
|
|
VDATEHEAP();
|
|
|
|
PLACEABLEMETAHEADER plac_mfh;
|
|
HRESULT error;
|
|
|
|
wPreparePlaceableMFHeader(&plac_mfh, lWidth, lHeight);
|
|
|
|
// write the placeable header to the stream
|
|
if (error = pstm->Write(&plac_mfh, sizeof(plac_mfh), NULL))
|
|
return(error);
|
|
|
|
// write the rest of the METAFILE to the stream
|
|
return UtHMFToMFStm(lphMF, dwSize, pstm);
|
|
}
|
|
|
|
|
|
FARINTERNAL UtMFStmToPlaceableMFStm(LPSTREAM pstmMF, DWORD dwSize,
|
|
LONG lWidth, LONG lHeight, LPSTREAM pstmPMF)
|
|
{
|
|
VDATEHEAP();
|
|
|
|
PLACEABLEMETAHEADER plac_mfh;
|
|
HRESULT error;
|
|
ULARGE_INTEGER ularge_int; // indicates how much data to copy
|
|
|
|
wPreparePlaceableMFHeader(&plac_mfh, lWidth, lHeight);
|
|
|
|
// write the placeable header to the stream
|
|
if (error = pstmPMF->Write(&plac_mfh, sizeof(plac_mfh), NULL))
|
|
return(error);
|
|
|
|
// copy the METAFILE data from one stream to the other
|
|
ULISet32(ularge_int, dwSize);
|
|
if ((error = pstmMF->CopyTo(pstmPMF, ularge_int, NULL, NULL)) ==
|
|
NOERROR)
|
|
StSetSize(pstmPMF, 0, TRUE);
|
|
|
|
return(error);
|
|
}
|
|
|
|
//+-------------------------------------------------------------------------
|
|
//
|
|
// Function: UtWriteOlePresStmHeader, private
|
|
//
|
|
// Synopsis: Write the presentation stream header
|
|
//
|
|
// Effects:
|
|
//
|
|
// Arguments: [lpstream] -- destination stream
|
|
// [pforetc] -- FORMATETC for this presentation
|
|
// [dwAdvf] -- advise flags for the presentation
|
|
//
|
|
// Requires:
|
|
//
|
|
// Returns: HRESULT
|
|
//
|
|
// Modifies:
|
|
//
|
|
// Algorithm:
|
|
//
|
|
// History: 11-May-94 AlexT Added function header, translate to
|
|
// ANSI before saving ptd
|
|
//
|
|
// Notes: This function can fail in low memory for presentations with
|
|
// non-NULL ptds (since we allocate memory to do the conversion
|
|
// to the persistent format). NtIssue #2789
|
|
//
|
|
//--------------------------------------------------------------------------
|
|
|
|
FARINTERNAL UtWriteOlePresStmHeader(LPSTREAM lpstream, LPFORMATETC pforetc,
|
|
DWORD dwAdvf)
|
|
{
|
|
VDATEHEAP();
|
|
|
|
HRESULT error;
|
|
OLEPRESSTMHDR opsh;
|
|
|
|
// write clip format
|
|
// REVIEW, change name of this function?
|
|
if (error = WriteClipformatStm(lpstream, pforetc->cfFormat))
|
|
return(error);
|
|
|
|
// write target device info
|
|
if (pforetc->ptd)
|
|
{
|
|
DVTDINFO dvtdInfo;
|
|
DVTARGETDEVICE *ptdA;
|
|
|
|
error = UtGetDvtd32Info(pforetc->ptd, &dvtdInfo);
|
|
if (FAILED(error))
|
|
{
|
|
return(error);
|
|
}
|
|
|
|
ptdA = (DVTARGETDEVICE *) PrivMemAlloc(dvtdInfo.cbConvertSize);
|
|
if (NULL == ptdA)
|
|
{
|
|
return(E_OUTOFMEMORY);
|
|
}
|
|
|
|
error = UtConvertDvtd32toDvtd16(pforetc->ptd, &dvtdInfo, ptdA);
|
|
|
|
if (SUCCEEDED(error))
|
|
{
|
|
error = StWrite(lpstream, ptdA, ptdA->tdSize);
|
|
}
|
|
|
|
PrivMemFree(ptdA);
|
|
|
|
if (FAILED(error))
|
|
{
|
|
return(error);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// if ptd is null then write 4 as size.
|
|
// REVIEW, what is that the sizeof()?
|
|
DWORD dwNullPtdLength = 4;
|
|
|
|
if (error = StWrite(lpstream, &dwNullPtdLength, sizeof(DWORD)))
|
|
return(error);
|
|
}
|
|
|
|
opsh.dwAspect = pforetc->dwAspect;
|
|
opsh.dwLindex = pforetc->lindex;
|
|
opsh.dwAdvf = dwAdvf;
|
|
|
|
// write DVASPECT, lindex, advise flags
|
|
return StWrite(lpstream, &opsh, sizeof(opsh));
|
|
}
|
|
|
|
//+-------------------------------------------------------------------------
|
|
//
|
|
// Function: UtReadOlePresStmHeader
|
|
//
|
|
// Synopsis: Reads in a presentation stream header
|
|
//
|
|
// Arguments: [pstm] -- source stream
|
|
// [pforetc] -- FORMATETC to be filled in
|
|
// [pdwAdvf] -- advise flags to be filled in
|
|
// [pfConvert] -- Mac conversion required, to be filled in
|
|
//
|
|
// Requires:
|
|
//
|
|
// Returns: HRESULT
|
|
//
|
|
// Modifies:
|
|
//
|
|
// Algorithm:
|
|
//
|
|
// History: 11-May-94 AlexT Added function header, translate ptd
|
|
// from ANSI when loading
|
|
//
|
|
// Notes:
|
|
//
|
|
//--------------------------------------------------------------------------
|
|
|
|
FARINTERNAL UtReadOlePresStmHeader(LPSTREAM pstm, LPFORMATETC pforetc,
|
|
DWORD FAR* pdwAdvf, BOOL FAR* pfConvert)
|
|
{
|
|
VDATEHEAP();
|
|
|
|
HRESULT error;
|
|
DWORD dwRead;
|
|
OLEPRESSTMHDR opsh;
|
|
|
|
// initialize this for error return cases
|
|
// Check for NULL ptr, as caller may not need this information
|
|
|
|
if (pfConvert)
|
|
{
|
|
*pfConvert = FALSE;
|
|
}
|
|
|
|
// there's no target device information yet
|
|
pforetc->ptd = NULL;
|
|
|
|
// REVIEW, rename this function to indicate its origin?
|
|
error = ReadClipformatStm(pstm, &dwRead);
|
|
|
|
if (error == NOERROR)
|
|
pforetc->cfFormat = (CLIPFORMAT)dwRead;
|
|
else
|
|
{
|
|
#ifndef _MAC
|
|
if (GetScode(error) == OLE_S_MAC_CLIPFORMAT)
|
|
{
|
|
// check whether the clipformat is "pict"
|
|
// REVIEW, what's this cuteness?
|
|
if (dwRead != *((DWORD *)"TCIP"))
|
|
return(error);
|
|
|
|
if (pfConvert)
|
|
*pfConvert = TRUE;
|
|
else
|
|
return ResultFromScode(DV_E_CLIPFORMAT);
|
|
|
|
pforetc->cfFormat = CF_METAFILEPICT;
|
|
}
|
|
else
|
|
#endif
|
|
return(error);
|
|
}
|
|
|
|
// set the proper tymed
|
|
if (pforetc->cfFormat == CF_METAFILEPICT)
|
|
{
|
|
pforetc->tymed = TYMED_MFPICT;
|
|
}
|
|
else if (pforetc->cfFormat == CF_ENHMETAFILE)
|
|
{
|
|
pforetc->tymed = TYMED_ENHMF;
|
|
}
|
|
else if (pforetc->cfFormat == CF_BITMAP)
|
|
{
|
|
AssertSz(0, "We don't read/save CF_BITMAP anymore");
|
|
return ResultFromScode(DV_E_CLIPFORMAT);
|
|
}
|
|
else if (pforetc->cfFormat == NULL)
|
|
{
|
|
pforetc->tymed = TYMED_NULL;
|
|
}
|
|
else
|
|
{
|
|
pforetc->tymed = TYMED_HGLOBAL;
|
|
}
|
|
|
|
// Read targetdevice info.
|
|
if (error = StRead(pstm, &dwRead, sizeof(dwRead)))
|
|
return(error);
|
|
|
|
// if the tdSize of ptd is non-null and is > 4, then go ahead read the
|
|
// remaining data of the target device info
|
|
if (dwRead > 4)
|
|
{
|
|
DVTARGETDEVICE *ptdA;
|
|
DVTDINFO dvtdInfo;
|
|
|
|
ptdA = (DVTARGETDEVICE *) PrivMemAlloc(dwRead);
|
|
if (NULL == ptdA)
|
|
{
|
|
return ResultFromScode(E_OUTOFMEMORY);
|
|
}
|
|
|
|
ptdA->tdSize = dwRead;
|
|
error = StRead(pstm, ((BYTE*)ptdA) + sizeof(dwRead),
|
|
dwRead - sizeof(dwRead));
|
|
|
|
if (SUCCEEDED(error))
|
|
{
|
|
error = UtGetDvtd16Info(ptdA, &dvtdInfo);
|
|
if (SUCCEEDED(error))
|
|
{
|
|
pforetc->ptd = (DVTARGETDEVICE *) PubMemAlloc(dvtdInfo.cbConvertSize);
|
|
if (NULL == pforetc->ptd)
|
|
{
|
|
error = E_OUTOFMEMORY;
|
|
}
|
|
else
|
|
{
|
|
error = UtConvertDvtd16toDvtd32(ptdA, &dvtdInfo, pforetc->ptd);
|
|
}
|
|
}
|
|
}
|
|
|
|
PrivMemFree(ptdA);
|
|
|
|
if (FAILED(error))
|
|
{
|
|
goto errRtn;
|
|
}
|
|
}
|
|
else
|
|
pforetc->ptd = NULL;
|
|
|
|
// Read DVASPECT, lindex, advise flags
|
|
if ((error = StRead(pstm, &opsh, sizeof(opsh))) != NOERROR)
|
|
goto errRtn;
|
|
|
|
pforetc->dwAspect = opsh.dwAspect;
|
|
pforetc->lindex = opsh.dwLindex;
|
|
if (pdwAdvf)
|
|
*pdwAdvf = opsh.dwAdvf;
|
|
|
|
return NOERROR;
|
|
|
|
errRtn:
|
|
if (pforetc->ptd)
|
|
{
|
|
PubMemFree(pforetc->ptd);
|
|
pforetc->ptd = NULL;
|
|
}
|
|
|
|
return(error);
|
|
}
|
|
|
|
|
|
FARINTERNAL UtOlePresStmToContentsStm(LPSTORAGE pstg, LPOLESTR lpszPresStm,
|
|
BOOL fDeletePresStm, UINT FAR* puiStatus)
|
|
{
|
|
VDATEHEAP();
|
|
|
|
LPSTREAM pstmOlePres;
|
|
LPSTREAM pstmContents = NULL;
|
|
HRESULT error;
|
|
FORMATETC foretc;
|
|
HDIBFILEHDR hdfh;
|
|
|
|
// there's no status yet
|
|
*puiStatus = 0;
|
|
|
|
// POSTPPC:
|
|
//
|
|
// This function needs to be rewritten to correctly handle the case described in
|
|
// the comments below (rather than just skipping out of the function if the contents
|
|
// stream already exists). The best course of action will probably be to convert
|
|
// DIBs->Metafiles and Metafiles->DIBs in the needed cases.
|
|
|
|
// The code inside the #ifdef below is used to determine if the contents
|
|
// stream has already been created (which is the case for an object that has
|
|
// been converted to a bitmap) because in the case of an object that has been
|
|
// converted to a static DIB and the object has a METAFILE presentation stream
|
|
// we already have a cachenode created as a DIB and we will read the contents
|
|
// stream after this call to get the DIB data. However, this function sees
|
|
// the metafile presentation, and converts it into the contents stream (which
|
|
// when then try to load as a DIB) and bad things happen (it doesn't work). If
|
|
// the stream already exists, then we bail out of this function.
|
|
if (pstg->CreateStream(OLE_CONTENTS_STREAM,(STGM_READWRITE | STGM_SHARE_EXCLUSIVE), NULL,
|
|
0, &pstmContents) != NOERROR)
|
|
{
|
|
return NOERROR;
|
|
}
|
|
|
|
// created stream, it must not have existed
|
|
pstmContents->Release();
|
|
pstg->DestroyElement(OLE_CONTENTS_STREAM);
|
|
|
|
if ((error = pstg->OpenStream(lpszPresStm, NULL,
|
|
(STGM_READ | STGM_SHARE_EXCLUSIVE), 0, &pstmOlePres)) !=
|
|
NOERROR)
|
|
{
|
|
// we can't open the source stream
|
|
*puiStatus |= CONVERT_NOSOURCE;
|
|
|
|
// check whether "CONTENTS" stream exits
|
|
if (pstg->OpenStream(OLE_CONTENTS_STREAM, NULL,
|
|
(STGM_READ | STGM_SHARE_EXCLUSIVE), 0,
|
|
&pstmContents) != NOERROR)
|
|
{
|
|
// we can't open the destination stream either
|
|
// REVIEW, since we can't open the source, who cares?
|
|
// REVIEW, is there a cheaper way to test existence
|
|
// other than opening?
|
|
*puiStatus |= CONVERT_NODESTINATION;
|
|
}
|
|
else
|
|
pstmContents->Release();
|
|
|
|
return(error);
|
|
}
|
|
|
|
foretc.ptd = NULL;
|
|
if (error = UtReadOlePresStmHeader(pstmOlePres, &foretc, NULL, NULL))
|
|
goto errRtn;
|
|
|
|
if (error = pstmOlePres->Read(&hdfh, sizeof(hdfh), 0))
|
|
goto errRtn;
|
|
|
|
AssertSz(hdfh.dwCompression == 0,
|
|
"Non-zero compression not supported");
|
|
|
|
if (error = OpenOrCreateStream(pstg, OLE_CONTENTS_STREAM,
|
|
&pstmContents))
|
|
{
|
|
*puiStatus |= CONVERT_NODESTINATION;
|
|
goto errRtn;
|
|
}
|
|
|
|
if (foretc.dwAspect == DVASPECT_ICON)
|
|
{
|
|
*puiStatus |= CONVERT_SOURCEISICON;
|
|
fDeletePresStm = FALSE;
|
|
error = NOERROR;
|
|
goto errRtn;
|
|
}
|
|
|
|
if (foretc.cfFormat == CF_DIB)
|
|
error = UtDIBStmToDIBFileStm(pstmOlePres, hdfh.dwSize,
|
|
pstmContents);
|
|
else if (foretc.cfFormat == CF_METAFILEPICT)
|
|
error = UtMFStmToPlaceableMFStm(pstmOlePres,
|
|
hdfh.dwSize, hdfh.dwWidth, hdfh.dwHeight,
|
|
pstmContents);
|
|
else
|
|
error = ResultFromScode(DV_E_CLIPFORMAT);
|
|
|
|
errRtn:
|
|
if (pstmOlePres)
|
|
pstmOlePres->Release();
|
|
|
|
if (pstmContents)
|
|
pstmContents->Release();
|
|
|
|
if (foretc.ptd)
|
|
PubMemFree(foretc.ptd);
|
|
|
|
if (error == NOERROR)
|
|
{
|
|
if (fDeletePresStm && lpszPresStm)
|
|
pstg->DestroyElement(lpszPresStm);
|
|
}
|
|
else
|
|
{
|
|
pstg->DestroyElement(OLE_CONTENTS_STREAM);
|
|
}
|
|
|
|
return(error);
|
|
}
|
|
|
|
FARINTERNAL UtOlePresStmToContentsStm(LPSTORAGE pstg, LPOLESTR lpszPresStm,
|
|
LPSTREAM pstmContents, UINT FAR* puiStatus)
|
|
{
|
|
HRESULT error = S_OK;
|
|
LPSTREAM pstmOlePres = NULL;
|
|
FORMATETC foretc;
|
|
HDIBFILEHDR hdfh;
|
|
|
|
// there's no status yet
|
|
*puiStatus = 0;
|
|
|
|
if ((error = pstg->OpenStream(lpszPresStm, NULL,
|
|
(STGM_READ | STGM_SHARE_EXCLUSIVE), 0, &pstmOlePres)) !=
|
|
NOERROR)
|
|
{
|
|
// we can't open the source stream
|
|
*puiStatus |= CONVERT_NOSOURCE;
|
|
return(error);
|
|
}
|
|
|
|
foretc.ptd = NULL;
|
|
if (error = UtReadOlePresStmHeader(pstmOlePres, &foretc, NULL, NULL))
|
|
goto errRtn;
|
|
|
|
if (error = pstmOlePres->Read(&hdfh, sizeof(hdfh), 0))
|
|
goto errRtn;
|
|
|
|
AssertSz(hdfh.dwCompression == 0,
|
|
"Non-zero compression not supported");
|
|
|
|
if (foretc.dwAspect == DVASPECT_ICON)
|
|
{
|
|
*puiStatus |= CONVERT_SOURCEISICON;
|
|
error = NOERROR;
|
|
goto errRtn;
|
|
}
|
|
|
|
if (foretc.cfFormat == CF_DIB)
|
|
error = UtDIBStmToDIBFileStm(pstmOlePres, hdfh.dwSize,
|
|
pstmContents);
|
|
else if (foretc.cfFormat == CF_METAFILEPICT)
|
|
error = UtMFStmToPlaceableMFStm(pstmOlePres,
|
|
hdfh.dwSize, hdfh.dwWidth, hdfh.dwHeight,
|
|
pstmContents);
|
|
else
|
|
error = ResultFromScode(DV_E_CLIPFORMAT);
|
|
|
|
errRtn:
|
|
if (pstmOlePres)
|
|
pstmOlePres->Release();
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
FARINTERNAL_(HANDLE) UtGetHPRESFromNative(LPSTORAGE pstg, LPSTREAM pstm, CLIPFORMAT cfFormat,
|
|
BOOL fOle10Native)
|
|
{
|
|
VDATEHEAP();
|
|
|
|
BOOL fReleaseStm = !pstm;
|
|
HGLOBAL hdata = NULL;
|
|
|
|
if ((cfFormat != CF_METAFILEPICT) &&
|
|
(cfFormat != CF_DIB) &&
|
|
(cfFormat != CF_ENHMETAFILE))
|
|
{
|
|
return(NULL);
|
|
}
|
|
|
|
if (fOle10Native)
|
|
{
|
|
DWORD dwSize;
|
|
|
|
if(!pstm)
|
|
{
|
|
if (pstg->OpenStream(OLE10_NATIVE_STREAM, NULL,
|
|
(STGM_READ | STGM_SHARE_EXCLUSIVE), 0,
|
|
&pstm) != NOERROR)
|
|
return(NULL);
|
|
}
|
|
|
|
if (pstm->Read(&dwSize, sizeof(DWORD), NULL) == NOERROR)
|
|
{
|
|
// is it PBrush native data?
|
|
if (cfFormat == CF_DIB)
|
|
UtGetHDIBFromDIBFileStm(pstm, &hdata);
|
|
else
|
|
{
|
|
// MSDraw native data or PaintBrush
|
|
//
|
|
UtGetHMFPICTFromMSDrawNativeStm(pstm, dwSize,
|
|
&hdata);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(!pstm)
|
|
{
|
|
if (pstg->OpenStream(OLE_CONTENTS_STREAM, NULL,
|
|
(STGM_READ | STGM_SHARE_EXCLUSIVE), 0,
|
|
&pstm) != NOERROR)
|
|
return(NULL);
|
|
}
|
|
|
|
if (cfFormat == CF_DIB)
|
|
{
|
|
UtGetHDIBFromDIBFileStm(pstm, &hdata);
|
|
}
|
|
else if (cfFormat == CF_METAFILEPICT)
|
|
{
|
|
UtGetHMFPICTFromPlaceableMFStm(pstm, &hdata);
|
|
}
|
|
else
|
|
{
|
|
UtGetHEMFFromContentsStm(pstm, &hdata);
|
|
}
|
|
}
|
|
|
|
if(fReleaseStm)
|
|
pstm->Release();
|
|
|
|
return(hdata);
|
|
}
|
|
|
|
|