155 lines
4.3 KiB
C
155 lines
4.3 KiB
C
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//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
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//
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// iconhand.h
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//
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// The class definition for the cdf icon handler.
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//
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// History:
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//
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// 4/23/97 edwardp Created.
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//
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////////////////////////////////////////////////////////////////////////////////
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//
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// Check for previous includes of this file.
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//
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#ifndef _ICONHAND_H_
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#define _ICONHAND_H_
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//
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// Defines
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//
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#define WSTR_DEFAULT L"DefaultLogo"
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#define LOGO_WIDTH 80
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#define LOGO_WIDTH_WIDE 194
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#define GLEAM_OFFSET 53
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//
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// The class definition for the icon handler.
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//
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class CIconHandler : public IExtractIcon,
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#ifdef UNICODE
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public IExtractIconA,
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#endif
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public IExtractImage,
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public IRunnableTask,
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public CPersist
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{
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//
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// Methods.
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//
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public:
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// Constructor
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CIconHandler(void);
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// IUnknown
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STDMETHODIMP QueryInterface(REFIID, void **);
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STDMETHODIMP_(ULONG) AddRef(void);
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STDMETHODIMP_(ULONG) Release(void);
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// IExtractIcon methods.
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STDMETHODIMP GetIconLocation(UINT uFlags,
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LPTSTR szIconFile,
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UINT cchMax,
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int *piIndex,
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UINT *pwFlags);
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STDMETHODIMP Extract(LPCTSTR pszFile,
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UINT nIconIndex,
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HICON *phiconLarge,
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HICON *phiconSmall,
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UINT nIconSize);
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#ifdef UNICODE
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// IExtractIconA methods.
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STDMETHODIMP GetIconLocation(UINT uFlags,
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LPSTR szIconFile,
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UINT cchMax,
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int *piIndex,
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UINT *pwFlags);
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STDMETHODIMP Extract(LPCSTR pszFile,
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UINT nIconIndex,
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HICON *phiconLarge,
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HICON *phiconSmall,
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UINT nIconSize);
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#endif
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// IExtractImage
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STDMETHODIMP GetLocation(LPWSTR pszPathBuffer,
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DWORD cch,
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DWORD *pdwPriority,
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const SIZE* pSize,
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DWORD dwRecClrDepth,
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DWORD *pdwFlags);
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STDMETHODIMP Extract(HBITMAP* phBmp);
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// IRunnable task
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STDMETHODIMP Run(void);
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STDMETHODIMP Kill(BOOL fWait);
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STDMETHODIMP Suspend(void);
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STDMETHODIMP Resume(void);
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STDMETHODIMP_(ULONG) IsRunning(void);
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private:
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//Destructor
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~CIconHandler(void);
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// check for default installed channel
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BOOL IsDefaultChannel(void);
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//Helper functions
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HRESULT ParseCdfIcon(void);
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HRESULT ParseCdfImage(BSTR* pbstrURL, BSTR* pbstrWURL);
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HRESULT ParseCdfShellLink();
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HRESULT ParseCdfInfoTip(void** ppv);
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HRESULT ExtractCustomImage(const SIZE* pSize,HBITMAP* phBmp);
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HRESULT ExtractDefaultImage(const SIZE* pSize,HBITMAP* phBmp);
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HRESULT GetBitmap(IImgCtx* pIImgCtx, const SIZE* pSize, HBITMAP* phBmp);
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HRESULT StretchBltCustomImage(IImgCtx* pIImgCtx,
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const SIZE* pSize,
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HDC hdcDst);
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HRESULT StretchBltDefaultImage(const SIZE* pSize, HDC hdcDest);
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HRESULT DrawGleam(HDC hdcDst);
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HRESULT SynchronousDownload(IImgCtx* pIImgCtx, LPCWSTR pwszURL);
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inline BOOL UseWideLogo(int cx) {return cx >
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((LOGO_WIDTH + LOGO_WIDTH_WIDE) >> 1);}
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//HRESULT QueryInternetShortcut(PCDFITEMIDLIST pcdfidl,
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// REFIID riid,
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// void** ppvOut);
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//
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// Member variables.
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//
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private:
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ULONG m_cRef;
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IExtractIcon* m_pIExtractIcon;
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BSTR m_bstrImageURL;
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BSTR m_bstrImageWideURL;
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PCDFITEMIDLIST m_pcdfidl;
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BOOL m_fDone;
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BOOL m_fDrawGleam;
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DWORD m_dwClrDepth;
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SIZE m_rgSize;
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LPTSTR m_pszErrURL; // this is the res: URL that shows errors messages
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};
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#endif // _ICONHAND_H_
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