120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
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#pragma once
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// forward declaration to make things easy
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class CAnnotationSet;
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typedef struct
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{
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SIZE szImage;
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ULONG xDPI;
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ULONG yDPI;
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DWORD dwDelay;
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} PageInfo;
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typedef struct
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{
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DWORD dwID;
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RECT rc;
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HBITMAP hbm;
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HPALETTE hPal;
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HDC hdc;
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HPALETTE hPalOld;
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HBITMAP hbmOld;
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} Buffer;
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void DeleteBuffer(Buffer * pBuf);
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class CDecodeTask : public CRunnableTask
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{
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public:
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static HRESULT Create(IStream * pstrm, LPCWSTR pszFilename, UINT iItem, IShellImageDataFactory * pFactory, HWND hwnd, IRunnableTask ** pTask);
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STDMETHOD(RunInitRT)();
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inline BOOL IsEditable() { return (_fEditable); }
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inline BOOL IsMultipage() { return (!_fAnimated && (_cImages > 1)); }
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inline BOOL IsFirstPage() { return (0==_iCurrent); }
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inline BOOL IsLastPage() { return (_iCurrent == _cImages-1); }
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inline BOOL IsAnimated() { return (_fAnimated); }
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inline BOOL IsExtendedPixelFmt () { return _fExtendedPF; }
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LPCWSTR GetName() { return _pszFilename; }
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BOOL GetSize(SIZE * psz);
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BOOL GetResolution(ULONG * px, ULONG * py);
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DWORD GetDelay();
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BOOL PrevPage();
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BOOL NextPage();
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BOOL NextFrame();
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BOOL SelectPage(ULONG nPage);
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BOOL ChangePage(CAnnotationSet& pAnnotations);
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HRESULT Print(BOOL fShowUI, LPWSTR szPrinterName, HWND hwndOwner);
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HRESULT Rotate(DWORD dwAngle);
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HRESULT Lock(IShellImageData ** ppSID);
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HRESULT Unlock();
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BOOL DisplayName(LPTSTR psz, UINT cch);
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// general image data
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ULONG _cImages;
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ULONG _iCurrent;
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BOOL _fAnimated;
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BOOL _fEditable;
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GUID _guidFormat;
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UINT _iItem;
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BOOL _fIsReadOnly;
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HRESULT _hr;
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// properties of page _iCurrent
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PageInfo * _ppi;
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private:
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CDecodeTask();
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~CDecodeTask();
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HRESULT _Initialize(IStream * pstrm, LPCWSTR pszFilename, UINT iItem, IShellImageDataFactory * pFactory, HWND hwnd);
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// initialization info
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IStream *_pstrm;
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LPWSTR _pszFilename;
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IShellImageDataFactory * _pfactory;
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HWND _hwndNotify;
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// protected data
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CRITICAL_SECTION _cs;
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IShellImageData *_pSID;
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SHFILEINFO _sfi;
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BOOL _fExtendedPF;
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};
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class CDrawTask : public CRunnableTask, public IShellImageDataAbort
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{
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public:
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// CRunnableTask
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static HRESULT Create(CDecodeTask * pImageData, COLORREF clr, RECT & rcSrc, RECT & rcDest, HWND hwnd, ULONG uMsg, IRunnableTask ** ppTask);
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STDMETHOD(RunInitRT)() { return S_OK; }
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STDMETHOD(InternalResumeRT)();
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// *** IUnknown ***
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STDMETHODIMP QueryInterface(REFIID riid, LPVOID * ppvObj);
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STDMETHODIMP_(ULONG) AddRef(void) { return CRunnableTask::AddRef(); }
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STDMETHODIMP_(ULONG) Release(void) { return CRunnableTask::Release(); }
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// *** IShellImageDataAbort ***
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STDMETHOD(QueryAbort)();
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private:
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CDrawTask();
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~CDrawTask();
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HRESULT _Initialize(CDecodeTask * pImageData, COLORREF clr, RECT & rcSrc, RECT & rcDest, HWND hwnd, ULONG uMsg);
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static BOOL _Abort(void *pvRef);
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CDecodeTask * _pImgData;
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DWORD _dwPage;
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COLORREF _clrBkgnd;
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RECT _rcSrc;
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Buffer * _pBuf;
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HWND _hwndNotify;
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ULONG _uMsgNotify;
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};
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