387 lines
9.4 KiB
C
387 lines
9.4 KiB
C
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/*---------------------------------------------------------------------------
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| PERS.C
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| This file has the IPersistStorage and IPersistfile interface implementation.
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| Created By: Vij Rajarajan (VijR)
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+---------------------------------------------------------------------------*/
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#define SERVERONLY
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#include <Windows.h>
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#include "mpole.h"
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#include "mplayer.h"
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#define STGM_SALL (STGM_READWRITE | STGM_SHARE_EXCLUSIVE)
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/**************************************************************************
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*************** IPersistStorage INTERFACE IMPLEMENTATION.
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**************************************************************************/
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//delegate to the common IUnknown implementation.
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STDMETHODIMP PSQueryInterface(
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LPPERSISTSTORAGE lpPersStg, // persist storage object ptr
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REFIID riidReq, // IID required
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LPVOID FAR * lplpUnk // pre for returning the interface
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)
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{
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return UnkQueryInterface((LPUNKNOWN)lpPersStg, riidReq, lplpUnk);
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}
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STDMETHODIMP_(ULONG) PSAddRef(
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LPPERSISTSTORAGE lpPersStg // persist storage object ptr
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)
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{
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return UnkAddRef((LPUNKNOWN) lpPersStg);
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}
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STDMETHODIMP_(ULONG) PSRelease (
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LPPERSISTSTORAGE lpPersStg // persist storage object ptr
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)
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{
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return UnkRelease((LPUNKNOWN) lpPersStg);
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}
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STDMETHODIMP PSGetClassID (
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LPPERSISTSTORAGE lpPersStg,
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CLSID FAR* pClsid
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)
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{
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DPF("PSGetClassID\n");
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/* Return the actual class ID that gets stored:
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*/
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*pClsid = gClsIDOLE1Compat;
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return NOERROR;
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}
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STDMETHODIMP PSIsDirty (
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LPPERSISTSTORAGE lpPersStg
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)
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{DPF("PSIsDirty\n");
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RETURN_RESULT( (fDocChanged && !(gfPlayingInPlace || gfOle2IPPlaying))
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? S_OK : S_FALSE);
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}
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STDMETHODIMP PSInitNew (
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LPPERSISTSTORAGE lpPersStg,
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LPSTORAGE lpStorage
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)
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{
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return NOERROR;
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}
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/**************************************************************************
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* PSLoad:
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* The Load method reads the embedded data from the "\1Ole10Native"
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* stream of the IStorage passed as an argument. This is because
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* we always pretend to be an OLE1 server when transferring data.
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* ItemSetData is called with this embedded data to to run the required
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* object.
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**************************************************************************/
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STDMETHODIMP PSLoad (
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LPPERSISTSTORAGE lpPersStg,
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LPSTORAGE lpStorage
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)
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{
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LPDOC lpdoc;
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SCODE error;
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LPSTREAM pstm;
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ULONG cbRead;
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DWORD size = 0;
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HGLOBAL hNative = NULL;
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LPTSTR lpnative = NULL;
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DPF("\nPSLoad is being called\n");
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lpdoc = ((struct CPersistStorageImpl FAR*)lpPersStg)->lpdoc;
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error = GetScode(IStorage_OpenStream(lpStorage, sz1Ole10Native,
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NULL, STGM_SALL, 0, &pstm));
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if (error == S_OK)
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{
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error = GetScode(IStream_Read(pstm, &size, 4, &cbRead));
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}
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if (error == S_OK)
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{
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hNative = GlobalAlloc(GMEM_DDESHARE |GMEM_ZEROINIT, (LONG)size);
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if (hNative)
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lpdoc->native = GLOBALLOCK(hNative);
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}
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if(lpdoc->native )
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{
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error = GetScode(IStream_Read(pstm, lpdoc->native, size, &cbRead));
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if (cbRead != size) error = E_FAIL; // REVIEW SCODE stream size error
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IStream_Release(pstm);
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}
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else error = E_OUTOFMEMORY;
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if (error == S_OK)
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{
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error = ItemSetData((LPBYTE)lpdoc->native);
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fDocChanged = FALSE;
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lpdoc->doctype = doctypeEmbedded;
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}
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if(hNative)
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{
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GLOBALUNLOCK(hNative);
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GLOBALFREE(hNative);
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}
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RETURN_RESULT( error);
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}
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/**************************************************************************
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* PSSave:
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* The Save method saves the native data in "\1Ole10Native" stream.
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* This is because we always pretend to be an OLE1 server when transferring
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* data. This ensures backward compatibility. GetLink is called to get
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* the embedding data.
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**************************************************************************/
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STDMETHODIMP PSSave (
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LPPERSISTSTORAGE lpPersStg,
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LPSTORAGE lpStorage,
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BOOL fSameAsLoad
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)
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{
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LPDOC lpdoc;
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SCODE error;
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LPSTREAM pstm = NULL;
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ULONG cbWritten;
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DWORD_PTR size;
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HGLOBAL hNative = NULL;
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LPTSTR lpnative = NULL;
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LPWSTR lpszUserType;
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DPF("* in pssave *");
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lpdoc = ((struct CPersistStorageImpl FAR*)lpPersStg)->lpdoc;
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#if 0
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// Allow saves if we're playing so that broken links can be fixed.
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if (fSameAsLoad && (gfOle2IPPlaying || gfPlayingInPlace))
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RETURN_RESULT(S_OK);
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#endif
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//Mark as OLE1 mplayer object.
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#ifndef UNICODE
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lpszUserType = AllocateUnicodeString(gachClassRoot);
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#else
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lpszUserType = gachClassRoot;
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#endif
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error = GetScode(WriteClassStg(lpStorage, &gClsIDOLE1Compat));
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error = GetScode(WriteFmtUserTypeStg(lpStorage, cfMPlayer, lpszUserType));
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#ifndef UNICODE
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FreeUnicodeString(lpszUserType);
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#endif
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if(error != S_OK)
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RETURN_RESULT(error);
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error = GetScode(IStorage_CreateStream(lpStorage, sz1Ole10Native,
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STGM_SALL | STGM_FAILIFTHERE, 0,0, &pstm));
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if (error == STG_E_FILEALREADYEXISTS)
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{
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error = GetScode(IStorage_OpenStream(lpStorage, sz1Ole10Native,
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NULL, STGM_SALL, 0,&pstm));
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DPF("*pssave--openstream*");
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}
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if(pstm && (error == S_OK))
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hNative = GetLink();
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if (hNative)
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{
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lpnative = GLOBALLOCK(hNative);
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size = GlobalSize(hNative);
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}
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else
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error = E_OUTOFMEMORY;
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if (lpnative && (size != 0L))
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{
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error = GetScode(IStream_Write(pstm, &size, 4, &cbWritten));
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error = GetScode(IStream_Write(pstm, lpnative, (ULONG)size, &cbWritten));
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DPF("\n*After pssave write");
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if (cbWritten != size) error = E_FAIL ; // REVIEW SCODE stream full error
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IStream_Release(pstm);
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}
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CleanObject();
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GLOBALUNLOCK(hNative);
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GLOBALFREE(hNative);
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RETURN_RESULT(error);
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}
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/* InPowerPointSlideView
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*
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* Check the class name of the container window to see if we're in PowerPoint.
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* This is to support the horrible hack to get around problem of PowerPoint
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* crashing if we delete an empty Media Clip.
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*
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*/
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STATICFN BOOL InPowerPointSlideView()
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{
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TCHAR ClassName[256];
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if (GetClassName(ghwndCntr, ClassName, CHAR_COUNT(ClassName)) > 0)
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{
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if (lstrcmp(ClassName, TEXT("paneClassDC")) == 0)
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{
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return TRUE;
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}
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}
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return FALSE;
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}
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STDMETHODIMP PSSaveCompleted (
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LPPERSISTSTORAGE lpPersStg,
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LPSTORAGE lpStorage
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)
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{
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LPDOC lpdoc;
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DPF("\n**pssavecompleted**");
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lpdoc = ((struct CPersistStorageImpl FAR*)lpPersStg)->lpdoc;
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/* Win95 HOT bug #11142
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*
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* Stop PowerPoint crashing horribly:
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*/
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if ((gwDeviceID == 0) && InPowerPointSlideView())
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SendDocMsg(lpdoc, OLE_CHANGED);
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// inform clients that the object has been saved
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return SendDocMsg (lpdoc, OLE_SAVED);
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}
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STDMETHODIMP PSHandsOffStorage (
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LPPERSISTSTORAGE lpPersStg
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)
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{
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return NOERROR;
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}
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/**************************************************************************
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************ IPersistFile INTERFACE IMPLEMENTATION.
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**************************************************************************/
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//delegate to common IUnknown implementation.
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STDMETHODIMP PFQueryInterface(
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LPPERSISTFILE lpPersFile, // persist storage object ptr
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REFIID riidReq, // IID required
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LPVOID FAR * lplpUnk // pre for returning the interface
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)
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{
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return UnkQueryInterface((LPUNKNOWN)lpPersFile, riidReq, lplpUnk);
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}
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STDMETHODIMP_(ULONG) PFAddRef(
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LPPERSISTFILE lpPersFile // persist storage object ptr
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)
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{
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return UnkAddRef((LPUNKNOWN) lpPersFile);
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}
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STDMETHODIMP_(ULONG) PFRelease (
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LPPERSISTFILE lpPersFile // persist storage object ptr
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)
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{
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return UnkRelease((LPUNKNOWN) lpPersFile);
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}
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STDMETHODIMP PFGetClassID (
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LPPERSISTFILE lpPersFile,
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CLSID FAR* pCid
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)
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{
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DPF("\n* PFGetclassid");
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/* The docs are confusing here, but apparently IPersist interfaces
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* should return the old class ID:
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*/
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*pCid = gClsIDOLE1Compat;
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return NOERROR;
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}
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STDMETHODIMP PFIsDirty (
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LPPERSISTFILE lpPersFile
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)
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{
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RETURN_RESULT( gfDirty ? S_OK : S_FALSE);
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}
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//This will be called when the user does a "Insert->Create from file".
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//Open the file with OpenMciDevice and we will be ready to transfer the
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//object.
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STDMETHODIMP PFLoad (
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LPPERSISTFILE lpPersFile,
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LPCWSTR lpszFileName,
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DWORD grfMode
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)
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{
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LPDOC lpdoc;
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TCHAR szFileName[256];
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lpdoc = ((struct CPersistStorageImpl FAR*)lpPersFile)->lpdoc;
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DPF("\n***IN PFLOAD: "DTS"\n", lpszFileName);
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#if UNICODE
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lstrcpy(szFileName, lpszFileName);
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#else
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UnicodeToAnsiString(lpszFileName, szFileName, UNKNOWN_LENGTH);
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#endif
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if(OpenMciDevice(szFileName, NULL))
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RETURN_RESULT(S_OK);
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else
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RETURN_RESULT(E_FAIL);
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}
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STDMETHODIMP PFSave (
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LPPERSISTFILE lpPersFile,
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LPCWSTR lpszFileName,
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BOOL fRemember
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)
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{
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return NOERROR;
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}
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STDMETHODIMP PFSaveCompleted (
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LPPERSISTFILE lpPersFile,
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LPCWSTR lpszFileName
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)
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{
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LPDOC lpdoc;
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lpdoc = ((struct CPersistStorageImpl FAR*)lpPersFile)->lpdoc;
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// inform clients that the object has been saved
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return SendDocMsg(lpdoc, OLE_SAVED);
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}
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STDMETHODIMP PFGetCurFile (
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LPPERSISTFILE lpPersFile,
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LPWSTR FAR* lplpszFileName
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)
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{
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RETURN_RESULT( E_NOTIMPL);
|
|||
|
|
}
|
|||
|
|
|