212 lines
6.6 KiB
C
212 lines
6.6 KiB
C
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/*******************************************************************************
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*
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* (C) COPYRIGHT MICROSOFT CORPORATION, 1998
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*
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* TITLE: GPHELPER.H
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*
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* VERSION: 1.0
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*
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* AUTHOR: ShaunIv
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*
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* DATE: 10/11/1999
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*
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* DESCRIPTION: Encapsulation of common GDI plus operationss
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*
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*******************************************************************************/
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#ifndef __GPHELPER_H_INCLUDED
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#define __GPHELPER_H_INCLUDED
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#include <windows.h>
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#include <simstr.h>
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#include <gdiplus.h>
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#include <simarray.h>
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#include <gdiplusinit.h>
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class CGdiPlusInit
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{
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ULONG_PTR m_pGdiplusToken;
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public:
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CGdiPlusInit();
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~CGdiPlusInit();
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};
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class CGdiPlusHelper
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{
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private:
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CGdiPlusInit m_Init;
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Gdiplus::ImageCodecInfo *m_pImageEncoderInfo;
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UINT m_nImageEncoderCount;
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Gdiplus::ImageCodecInfo *m_pImageDecoderInfo;
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UINT m_nImageDecoderCount;
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private:
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CGdiPlusHelper( const CGdiPlusHelper & );
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CGdiPlusHelper &operator=( const CGdiPlusHelper & );
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public:
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CGdiPlusHelper(void);
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~CGdiPlusHelper(void);
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protected:
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HRESULT Initialize(void);
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static HRESULT ConstructCodecExtensionSearchStrings( CSimpleString &strExtensions, Gdiplus::ImageCodecInfo *pImageCodecInfo, UINT nImageCodecCount );
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void Destroy(void);
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public:
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bool IsValid(void) const;
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HRESULT ConstructDecoderExtensionSearchStrings( CSimpleString &strExtensions );
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HRESULT ConstructEncoderExtensionSearchStrings( CSimpleString &strExtensions );
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HRESULT GetClsidOfEncoder( const GUID &guidFormatId, CLSID &clsidFormat ) const;
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HRESULT GetClsidOfDecoder( const GUID &guidFormatId, CLSID &clsidFormat ) const;
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HRESULT Convert( LPCWSTR pszInputFilename, LPCWSTR pszOutputFilename, const CLSID &guidOutputFormat ) const;
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HRESULT Rotate( LPCWSTR pszInputFilename, LPCWSTR pszOutputFilename, int nRotationAngle, const CLSID &guidOutputFormat ) const;
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HRESULT Rotate( HBITMAP hSourceBitmap, HBITMAP &hTargetBitmap, int nRotation ) const;
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HRESULT LoadAndScale( HBITMAP &hTargetBitmap, LPCTSTR pszFilename, UINT nMaxWidth=0, UINT nMaxHeight=0, bool bStretchSmallImages=false );
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HRESULT LoadAndScale( HBITMAP &hTargetBitmap, IStream *pStream, UINT nMaxWidth=0, UINT nMaxHeight=0, bool bStretchSmallImages=false );
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HRESULT SaveMultipleImagesAsMultiPage( const CSimpleDynamicArray<CSimpleStringWide> &Filenames, const CSimpleStringWide &strFilename, const CLSID &guidOutputFormat );
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HRESULT SetBrightnessAndContrast( HBITMAP hSourceBitmap, HBITMAP &hTargetBitmap, BYTE nBrightness, BYTE nContrast );
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HRESULT SetThreshold( HBITMAP hSourceBitmap, HBITMAP &hTargetBitmap, BYTE nThreshold );
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static Gdiplus::EncoderParameters *AppendEncoderParameter( Gdiplus::EncoderParameters *pEncoderParameters, const GUID &guidProp, ULONG nType, PVOID pVoid );
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static inline GDISTATUS_TO_HRESULT(Gdiplus::Status status)
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{
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//
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// Default to turning GDI+ errors into generic failures
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//
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HRESULT hr = E_FAIL;
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switch( status )
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{
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case Gdiplus::Ok:
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hr = S_OK;
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break;
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case Gdiplus::InvalidParameter:
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hr = E_INVALIDARG;
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break;
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case Gdiplus::OutOfMemory:
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hr = E_OUTOFMEMORY;
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break;
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case Gdiplus::InsufficientBuffer:
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hr = HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
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break;
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case Gdiplus::Aborted:
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hr = E_ABORT;
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break;
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case Gdiplus::ObjectBusy:
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hr = E_PENDING;
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break;
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case Gdiplus::FileNotFound:
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hr = HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND);
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break;
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case Gdiplus::AccessDenied:
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hr = E_ACCESSDENIED;
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break;
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case Gdiplus::UnknownImageFormat:
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hr = HRESULT_FROM_WIN32(ERROR_INVALID_PIXEL_FORMAT);
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break;
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case Gdiplus::NotImplemented:
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hr = E_NOTIMPL;
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break;
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case Gdiplus::Win32Error:
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hr = HRESULT_FROM_WIN32(GetLastError());
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break;
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case Gdiplus::ValueOverflow:
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case Gdiplus::FontFamilyNotFound:
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case Gdiplus::FontStyleNotFound:
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case Gdiplus::NotTrueTypeFont:
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case Gdiplus::UnsupportedGdiplusVersion:
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case Gdiplus::GdiplusNotInitialized:
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case Gdiplus::WrongState:
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break;
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}
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return hr;
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}
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};
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class CImageFileFormatVerifier
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{
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private:
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//
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// Internal class used to store the file signatures
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//
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class CImageFileFormatVerifierItem
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{
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private:
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PBYTE m_pSignature;
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PBYTE m_pMask;
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int m_nLength;
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GUID m_guidFormat;
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CLSID m_clsidDecoder;
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public:
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//
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// Constructors, assignment operator and destructor
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//
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CImageFileFormatVerifierItem(void);
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CImageFileFormatVerifierItem( const PBYTE pSignature, const PBYTE pMask, int nLength, const GUID &guidFormat, const CLSID &guidDecoder );
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CImageFileFormatVerifierItem( const CImageFileFormatVerifierItem &other );
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CImageFileFormatVerifierItem &operator=( const CImageFileFormatVerifierItem &other );
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CImageFileFormatVerifierItem &Assign( const PBYTE pSignature, const PBYTE pMask, int nLength, const GUID &Format, const CLSID &guidDecoder );
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~CImageFileFormatVerifierItem(void);
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protected:
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void Destroy(void);
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public:
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//
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// Accessor functions
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//
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PBYTE Signature(void) const;
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PBYTE Mask(void) const;
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int Length(void) const;
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GUID Format(void) const;
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CLSID Decoder(void) const;
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//
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// Does this stream of bytes match this format?
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//
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bool Match( PBYTE pBytes, int nLen ) const;
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};
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private:
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CSimpleDynamicArray<CImageFileFormatVerifierItem> m_FileFormatVerifierList;
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int m_nMaxSignatureLength;
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PBYTE m_pSignatureBuffer;
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private:
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CImageFileFormatVerifier( const CImageFileFormatVerifier & );
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CImageFileFormatVerifier &operator=( const CImageFileFormatVerifier & );
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public:
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CImageFileFormatVerifier(void);
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~CImageFileFormatVerifier(void);
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void Destroy(void);
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bool IsValid(void) const;
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bool IsImageFile( LPCTSTR pszFilename );
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bool IsSupportedImageFromStream( IStream * pStream, GUID * pGuidOfFormat = NULL );
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GUID GetImageType( IStream * pStream );
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};
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#endif
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