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atlimage.h
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// This is a part of the Active Template Library.
// Copyright (C) Microsoft Corporation
// All rights reserved.
//
// This source code is only intended as a supplement to the
// Active Template Library Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Active Template Library product.
#ifndef __ATLIMAGE_H__
#define __ATLIMAGE_H__
#pragma once
#include <atldef.h>
#include <atlbase.h>
#include <atlstr.h>
#include <atlsimpcoll.h>
#include <atltypes.h>
#ifndef _ATL_NO_PRAGMA_WARNINGS
#pragma warning (push)
#pragma warning(disable : 4820) // padding added after member
#endif //!_ATL_NO_PRAGMA_WARNINGS
#pragma warning( push, 3 )
#pragma push_macro("new")
#undef new
#include <gdiplus.h>
#pragma pop_macro("new")
#pragma warning( pop )
#include <shlwapi.h>
#ifndef _ATL_NO_DEFAULT_LIBS
#pragma comment(lib, "gdi32.lib")
#pragma comment(lib, "shlwapi.lib")
#pragma comment(lib, "gdiplus.lib")
#if WINVER >= 0x0500
#pragma comment(lib, "msimg32.lib")
#endif // WINVER >= 0x0500
#endif // !_ATL_NO_DEFAULT_LIBS
#pragma pack(push, _ATL_PACKING)
namespace ATL
{
const int CIMAGE_DC_CACHE_SIZE = 4;
class CImage;
class CImageDC
{
public:
CImageDC( const CImage& image ) throw( ... );
~CImageDC() throw();
operator HDC() const throw();
private:
const CImage& m_image;
HDC m_hDC;
};
class CImage
{
private:
class CDCCache
{
public:
CDCCache() throw();
~CDCCache() throw();
HDC GetDC() throw();
void ReleaseDC( HDC ) throw();
private:
HDC m_ahDCs[CIMAGE_DC_CACHE_SIZE];
};
class CInitGDIPlus
{
public:
CInitGDIPlus() throw();
~CInitGDIPlus() throw();
bool Init() throw();
void ReleaseGDIPlus() throw();
void IncreaseCImageCount() throw();
void DecreaseCImageCount() throw();
private:
ULONG_PTR m_dwToken;
CRITICAL_SECTION m_sect;
LONG m_nCImageObjects;
};
public:
static const DWORD createAlphaChannel = 0x01;
static const DWORD excludeGIF = 0x01;
static const DWORD excludeBMP = 0x02;
static const DWORD excludeEMF = 0x04;
static const DWORD excludeWMF = 0x08;
static const DWORD excludeJPEG = 0x10;
static const DWORD excludePNG = 0x20;
static const DWORD excludeTIFF = 0x40;
static const DWORD excludeIcon = 0x80;
static const DWORD excludeOther = 0x80000000;
static const DWORD excludeDefaultLoad = 0;
static const DWORD excludeDefaultSave = excludeIcon|excludeEMF|excludeWMF;
static const DWORD excludeValid = 0x800000ff;
enum DIBOrientation
{
DIBOR_DEFAULT,
DIBOR_TOPDOWN,
DIBOR_BOTTOMUP
};
public:
CImage() throw();
virtual ~CImage() throw();
operator HBITMAP() const throw();
#if WINVER >= 0x0500
BOOL AlphaBlend( HDC hDestDC, int xDest, int yDest, BYTE bSrcAlpha = 0xff,
BYTE bBlendOp = AC_SRC_OVER ) const throw();
BOOL AlphaBlend( HDC hDestDC, const POINT& pointDest, BYTE bSrcAlpha = 0xff,
BYTE bBlendOp = AC_SRC_OVER ) const throw();
BOOL AlphaBlend( HDC hDestDC, int xDest, int yDest, int nDestWidth,
int nDestHeight, int xSrc, int ySrc, int nSrcWidth, int nSrcHeight,
BYTE bSrcAlpha = 0xff, BYTE bBlendOp = AC_SRC_OVER ) const throw();
BOOL AlphaBlend( HDC hDestDC, const RECT& rectDest, const RECT& rectSrc,
BYTE bSrcAlpha = 0xff, BYTE bBlendOp = AC_SRC_OVER ) const throw();
#endif // WINVER >= 0x0500
void Attach( HBITMAP hBitmap, DIBOrientation eOrientation = DIBOR_DEFAULT ) throw();
BOOL BitBlt( HDC hDestDC, int xDest, int yDest, DWORD dwROP = SRCCOPY ) const throw();
BOOL BitBlt( HDC hDestDC, const POINT& pointDest, DWORD dwROP = SRCCOPY ) const throw();
BOOL BitBlt( HDC hDestDC, int xDest, int yDest, int nDestWidth,
int nDestHeight, int xSrc, int ySrc, DWORD dwROP = SRCCOPY ) const throw();
BOOL BitBlt( HDC hDestDC, const RECT& rectDest, const POINT& pointSrc,
DWORD dwROP = SRCCOPY ) const throw();
BOOL Create( int nWidth, int nHeight, int nBPP, DWORD dwFlags = 0 ) throw();
BOOL CreateEx( int nWidth, int nHeight, int nBPP, DWORD eCompression,
const DWORD* pdwBitmasks = NULL, DWORD dwFlags = 0 ) throw();
void Destroy() throw();
HBITMAP Detach() throw();
BOOL Draw( HDC hDestDC, int xDest, int yDest, int nDestWidth,
int nDestHeight, int xSrc, int ySrc, int nSrcWidth, int nSrcHeight ) const throw();
BOOL Draw( HDC hDestDC, const RECT& rectDest, const RECT& rectSrc ) const throw();
BOOL Draw( HDC hDestDC, int xDest, int yDest ) const throw();
BOOL Draw( HDC hDestDC, const POINT& pointDest ) const throw();
BOOL Draw( HDC hDestDC, int xDest, int yDest, int nDestWidth,
int nDestHeight ) const throw();
BOOL Draw( HDC hDestDC, const RECT& rectDest ) const throw();
const void* GetBits() const throw();
void* GetBits() throw();
int GetBPP() const throw();
void GetColorTable( UINT iFirstColor, UINT nColors, RGBQUAD* prgbColors ) const throw();
HDC GetDC() const throw();
static HRESULT GetExporterFilterString( CSimpleString& strExporters,
CSimpleArray< GUID >& aguidFileTypes, LPCTSTR pszAllFilesDescription = NULL,
DWORD dwExclude = excludeDefaultSave, TCHAR chSeparator = _T( '|' ) );
static HRESULT GetImporterFilterString( CSimpleString& strImporters,
CSimpleArray< GUID >& aguidFileTypes, LPCTSTR pszAllFilesDescription = NULL,
DWORD dwExclude = excludeDefaultLoad, TCHAR chSeparator = _T( '|' ) );
int GetHeight() const throw();
int GetMaxColorTableEntries() const throw();
int GetPitch() const throw();
const void* GetPixelAddress( int x, int y ) const throw();
void* GetPixelAddress( int x, int y ) throw();
COLORREF GetPixel( int x, int y ) const throw();
LONG GetTransparentColor() const throw();
int GetWidth() const throw();
bool IsDIBSection() const throw();
bool IsIndexed() const throw();
bool IsNull() const throw();
HRESULT Load( LPCTSTR pszFileName ) throw();
HRESULT Load( IStream* pStream ) throw();
void LoadFromResource( HINSTANCE hInstance, LPCTSTR pszResourceName ) throw();
void LoadFromResource( HINSTANCE hInstance, UINT nIDResource ) throw();
BOOL MaskBlt( HDC hDestDC, int xDest, int yDest, int nDestWidth,
int nDestHeight, int xSrc, int ySrc, HBITMAP hbmMask, int xMask,
int yMask, DWORD dwROP = SRCCOPY ) const throw();
BOOL MaskBlt( HDC hDestDC, const RECT& rectDest, const POINT& pointSrc,
HBITMAP hbmMask, const POINT& pointMask, DWORD dwROP = SRCCOPY ) const throw();
BOOL MaskBlt( HDC hDestDC, int xDest, int yDest, HBITMAP hbmMask,
DWORD dwROP = SRCCOPY ) const throw();
BOOL MaskBlt( HDC hDestDC, const POINT& pointDest, HBITMAP hbmMask,
DWORD dwROP = SRCCOPY ) const throw();
BOOL PlgBlt( HDC hDestDC, const POINT* pPoints, HBITMAP hbmMask = NULL ) const throw();
BOOL PlgBlt( HDC hDestDC, const POINT* pPoints, int xSrc, int ySrc,
int nSrcWidth, int nSrcHeight, HBITMAP hbmMask = NULL, int xMask = 0,
int yMask = 0 ) const throw();
BOOL PlgBlt( HDC hDestDC, const POINT* pPoints, const RECT& rectSrc,
HBITMAP hbmMask = NULL, const POINT& pointMask = CPoint( 0, 0 ) ) const throw();
void ReleaseDC() const throw();
HRESULT Save( IStream* pStream, REFGUID guidFileType ) const throw();
HRESULT Save( LPCTSTR pszFileName, REFGUID guidFileType = GUID_NULL, Gdiplus::EncoderParameters* encoderParameters = NULL ) const throw();
void SetColorTable( UINT iFirstColor, UINT nColors,
const RGBQUAD* prgbColors ) throw();
void SetPixel( int x, int y, COLORREF color ) throw();
void SetPixelIndexed( int x, int y, int iIndex ) throw();
void SetPixelRGB( int x, int y, BYTE r, BYTE g, BYTE b ) throw();
LONG SetTransparentColor( LONG iTransparentColor ) throw();
BOOL StretchBlt( HDC hDestDC, int xDest, int yDest, int nDestWidth,
int nDestHeight, DWORD dwROP = SRCCOPY ) const throw();
BOOL StretchBlt( HDC hDestDC, const RECT& rectDest, DWORD dwROP = SRCCOPY ) const throw();
BOOL StretchBlt( HDC hDestDC, int xDest, int yDest, int nDestWidth,
int nDestHeight, int xSrc, int ySrc, int nSrcWidth, int nSrcHeight,
DWORD dwROP = SRCCOPY ) const throw();
BOOL StretchBlt( HDC hDestDC, const RECT& rectDest, const RECT& rectSrc,
DWORD dwROP = SRCCOPY ) const throw();
#if WINVER >= 0x0500
BOOL TransparentBlt( HDC hDestDC, int xDest, int yDest, int nDestWidth,
int nDestHeight, UINT crTransparent = CLR_INVALID ) const throw();
BOOL TransparentBlt( HDC hDestDC, const RECT& rectDest,
UINT crTransparent = CLR_INVALID ) const throw();
BOOL TransparentBlt( HDC hDestDC, int xDest, int yDest, int nDestWidth,
int nDestHeight, int xSrc, int ySrc, int nSrcWidth, int nSrcHeight,
UINT crTransparent = CLR_INVALID ) const throw();
BOOL TransparentBlt( HDC hDestDC, const RECT& rectDest, const RECT& rectSrc,
UINT crTransparent = CLR_INVALID ) const throw();
#endif // WINVER >= 0x0500
static BOOL IsTransparencySupported() throw();
private:
HBITMAP m_hBitmap;
void* m_pBits;
int m_nWidth;
int m_nHeight;
int m_nPitch;
int m_nBPP;
bool m_bIsDIBSection;
bool m_bHasAlphaChannel;
LONG m_iTransparentColor;
static CInitGDIPlus s_initGDIPlus;
public:
inline static void ReleaseGDIPlus() { s_initGDIPlus.ReleaseGDIPlus(); }
// Implementation
private:
static CLSID FindCodecForExtension( LPCTSTR pszExtension, const Gdiplus::ImageCodecInfo* pCodecs, UINT nCodecs );
static CLSID FindCodecForFileType( REFGUID guidFileType, const Gdiplus::ImageCodecInfo* pCodecs, UINT nCodecs );
static void BuildCodecFilterString( const Gdiplus::ImageCodecInfo* pCodecs, UINT nCodecs,
CSimpleString& strFilter, CSimpleArray< GUID >& aguidFileTypes, LPCTSTR pszAllFilesDescription, DWORD dwExclude, TCHAR chSeparator );
static bool ShouldExcludeFormat( REFGUID guidFileType, DWORD dwExclude ) throw();
void UpdateBitmapInfo( DIBOrientation eOrientation );
HRESULT CreateFromGdiplusBitmap( Gdiplus::Bitmap& bmSrc ) throw();
static bool InitGDIPlus() throw();
static int ComputePitch( int nWidth, int nBPP )
{
return( (((nWidth*nBPP)+31)/32)*4 );
}
static void GenerateHalftonePalette( LPRGBQUAD prgbPalette );
COLORREF GetTransparentRGB() const;
private:
mutable HDC m_hDC;
mutable int m_nDCRefCount;
mutable HBITMAP m_hOldBitmap;
static CDCCache s_cache;
};
inline CImageDC::CImageDC( const CImage& image ) throw( ... ) :
m_image( image ),
m_hDC( image.GetDC() )
{
if( m_hDC == NULL )
{
AtlThrow( E_OUTOFMEMORY );
}
}
inline CImageDC::~CImageDC() throw()
{
m_image.ReleaseDC();
}
inline CImageDC::operator HDC() const throw()
{
return( m_hDC );
}
inline CImage::CInitGDIPlus::CInitGDIPlus() throw() :
m_dwToken( 0 ), m_nCImageObjects( 0 )
{
__try
{
InitializeCriticalSection(&m_sect);
}
__except( STATUS_NO_MEMORY == GetExceptionCode() )
{
AtlThrow( E_OUTOFMEMORY );
}
}
inline CImage::CInitGDIPlus::~CInitGDIPlus() throw()
{
ReleaseGDIPlus();
DeleteCriticalSection(&m_sect);
}
inline bool CImage::CInitGDIPlus::Init() throw()
{
EnterCriticalSection(&m_sect);
bool fRet = true;
if( m_dwToken == 0 )
{
Gdiplus::GdiplusStartupInput input;
Gdiplus::GdiplusStartupOutput output;
Gdiplus::Status status = Gdiplus::GdiplusStartup( &m_dwToken, &input, &output );
if( status != Gdiplus::Ok )
fRet = false;
}
LeaveCriticalSection(&m_sect);
return fRet;
}
inline void CImage::CInitGDIPlus::ReleaseGDIPlus() throw()
{
EnterCriticalSection(&m_sect);
if( m_dwToken != 0 )
{
Gdiplus::GdiplusShutdown( m_dwToken );
}
m_dwToken = 0;
LeaveCriticalSection(&m_sect);
}
inline void CImage::CInitGDIPlus::IncreaseCImageCount() throw()
{
EnterCriticalSection(&m_sect);
m_nCImageObjects++;
LeaveCriticalSection(&m_sect);
}
inline void CImage::CInitGDIPlus::DecreaseCImageCount() throw()
{
EnterCriticalSection(&m_sect);
if( --m_nCImageObjects == 0 )
ReleaseGDIPlus();
LeaveCriticalSection(&m_sect);
}
inline CImage::CDCCache::CDCCache() throw()
{
int iDC;
for( iDC = 0; iDC < CIMAGE_DC_CACHE_SIZE; iDC++ )
{
m_ahDCs[iDC] = NULL;
}
}
inline CImage::CDCCache::~CDCCache() throw()
{
int iDC;
for( iDC = 0; iDC < CIMAGE_DC_CACHE_SIZE; iDC++ )
{
if( m_ahDCs[iDC] != NULL )
{
::DeleteDC( m_ahDCs[iDC] );
}
}
}
inline HDC CImage::CDCCache::GetDC() throw()
{
HDC hDC;
for( int iDC = 0; iDC < CIMAGE_DC_CACHE_SIZE; iDC++ )
{
hDC = static_cast< HDC >( InterlockedExchangePointer( reinterpret_cast< void** >(&m_ahDCs[iDC]), NULL ) );
if( hDC != NULL )
{
return( hDC );
}
}
hDC = ::CreateCompatibleDC( NULL );
return( hDC );
}
inline void CImage::CDCCache::ReleaseDC( HDC hDC ) throw()
{
for( int iDC = 0; iDC < CIMAGE_DC_CACHE_SIZE; iDC++ )
{
HDC hOldDC;
hOldDC = static_cast< HDC >( InterlockedExchangePointer( reinterpret_cast< void** >(&m_ahDCs[iDC]), hDC ) );
if( hOldDC == NULL )
{
return;
}
else
{
hDC = hOldDC;
}
}
if( hDC != NULL )
{
::DeleteDC( hDC );
}
}
inline CImage::CImage() throw() :
m_hBitmap( NULL ),
m_pBits( NULL ),
m_hDC( NULL ),
m_nDCRefCount( 0 ),
m_hOldBitmap( NULL ),
m_nWidth( 0 ),
m_nHeight( 0 ),
m_nPitch( 0 ),
m_nBPP( 0 ),
m_iTransparentColor( -1 ),
m_bHasAlphaChannel( false ),
m_bIsDIBSection( false )
{
s_initGDIPlus.IncreaseCImageCount();
}
inline CImage::~CImage() throw()
{
Destroy();
s_initGDIPlus.DecreaseCImageCount();
}
inline CImage::operator HBITMAP() const throw()
{
return( m_hBitmap );
}
#if WINVER >= 0x0500
inline BOOL CImage::AlphaBlend( HDC hDestDC, int xDest, int yDest,
BYTE bSrcAlpha, BYTE bBlendOp ) const throw()
{
return( AlphaBlend( hDestDC, xDest, yDest, m_nWidth, m_nHeight, 0, 0,
m_nWidth, m_nHeight, bSrcAlpha, bBlendOp ) );
}
inline BOOL CImage::AlphaBlend( HDC hDestDC, const POINT& pointDest,
BYTE bSrcAlpha, BYTE bBlendOp ) const throw()
{
return( AlphaBlend( hDestDC, pointDest.x, pointDest.y, m_nWidth, m_nHeight,
0, 0, m_nWidth, m_nHeight, bSrcAlpha, bBlendOp ) );
}
inline BOOL CImage::AlphaBlend( HDC hDestDC, int xDest, int yDest,
int nDestWidth, int nDestHeight, int xSrc, int ySrc, int nSrcWidth,
int nSrcHeight, BYTE bSrcAlpha, BYTE bBlendOp ) const throw()
{
BLENDFUNCTION blend;
BOOL bResult;
blend.SourceConstantAlpha = bSrcAlpha;
blend.BlendOp = bBlendOp;
blend.BlendFlags = 0;
if( m_bHasAlphaChannel )
{
blend.AlphaFormat = AC_SRC_ALPHA;
}
else
{
blend.AlphaFormat = 0;
}
GetDC();
bResult = ::AlphaBlend( hDestDC, xDest, yDest, nDestWidth, nDestHeight, m_hDC,
xSrc, ySrc, nSrcWidth, nSrcHeight, blend );
ReleaseDC();
return( bResult );
}
inline BOOL CImage::AlphaBlend( HDC hDestDC, const RECT& rectDest,
const RECT& rectSrc, BYTE bSrcAlpha, BYTE bBlendOp ) const throw()
{
return( AlphaBlend( hDestDC, rectDest.left, rectDest.top, rectDest.right-
rectDest.left, rectDest.bottom-rectDest.top, rectSrc.left, rectSrc.top,
rectSrc.right-rectSrc.left, rectSrc.bottom-rectSrc.top, bSrcAlpha,
bBlendOp ) );
}
#endif // WINVER >= 0x0500
inline void CImage::Attach( HBITMAP hBitmap, DIBOrientation eOrientation ) throw()
{
ATLASSUME( m_hBitmap == NULL );
ATLASSERT( hBitmap != NULL );
m_hBitmap = hBitmap;
UpdateBitmapInfo( eOrientation );
}
inline BOOL CImage::BitBlt( HDC hDestDC, int xDest, int yDest, DWORD dwROP ) const throw()
{
return( BitBlt( hDestDC, xDest, yDest, m_nWidth, m_nHeight, 0, 0, dwROP ) );
}
inline BOOL CImage::BitBlt( HDC hDestDC, const POINT& pointDest, DWORD dwROP ) const throw()
{
return( BitBlt( hDestDC, pointDest.x, pointDest.y, m_nWidth, m_nHeight,
0, 0, dwROP ) );
}
inline BOOL CImage::BitBlt( HDC hDestDC, int xDest, int yDest, int nDestWidth,
int nDestHeight, int xSrc, int ySrc, DWORD dwROP ) const throw()
{
BOOL bResult;
ATLASSUME( m_hBitmap != NULL );
ATLASSERT( hDestDC != NULL );
GetDC();
bResult = ::BitBlt( hDestDC, xDest, yDest, nDestWidth, nDestHeight, m_hDC,
xSrc, ySrc, dwROP );
ReleaseDC();
return( bResult );
}
inline BOOL CImage::BitBlt( HDC hDestDC, const RECT& rectDest,
const POINT& pointSrc, DWORD dwROP ) const throw()
{
return( BitBlt( hDestDC, rectDest.left, rectDest.top, rectDest.right-
rectDest.left, rectDest.bottom-rectDest.top, pointSrc.x, pointSrc.y,
dwROP ) );
}
inline BOOL CImage::Create( int nWidth, int nHeight, int nBPP, DWORD dwFlags ) throw()
{
return( CreateEx( nWidth, nHeight, nBPP, BI_RGB, NULL, dwFlags ) );
}
inline BOOL CImage::CreateEx( int nWidth, int nHeight, int nBPP, DWORD eCompression,
const DWORD* pdwBitfields, DWORD dwFlags ) throw()
{
USES_ATL_SAFE_ALLOCA;
LPBITMAPINFO pbmi;
HBITMAP hBitmap;
ATLASSERT( (eCompression == BI_RGB) || (eCompression == BI_BITFIELDS) );
if( dwFlags&createAlphaChannel )
{
ATLASSERT( (nBPP == 32) && (eCompression == BI_RGB) );
}
pbmi = (LPBITMAPINFO)_ATL_SAFE_ALLOCA(sizeof(BITMAPINFOHEADER) + sizeof(RGBQUAD)*256, _ATL_SAFE_ALLOCA_DEF_THRESHOLD);
if( pbmi == NULL )
return FALSE;
memset( &pbmi->bmiHeader, 0, sizeof( pbmi->bmiHeader ) );
pbmi->bmiHeader.biSize = sizeof( pbmi->bmiHeader );
pbmi->bmiHeader.biWidth = nWidth;
pbmi->bmiHeader.biHeight = nHeight;
pbmi->bmiHeader.biPlanes = 1;
pbmi->bmiHeader.biBitCount = USHORT( nBPP );
pbmi->bmiHeader.biCompression = eCompression;
if( nBPP <= 8 )
{
ATLASSERT( eCompression == BI_RGB );
#pragma warning(push)
#pragma warning(disable:4068) //Disable unknown pragma warning that prefast pragma causes.
#pragma prefast(push)
#pragma prefast(disable:203, "no buffer overrun here, buffer was alocated properly")
memset( pbmi->bmiColors, 0, 256*sizeof( RGBQUAD ) );
#pragma prefast(pop)
#pragma warning(pop)
}
else
{
if( eCompression == BI_BITFIELDS )
{
ATLASSERT( pdwBitfields != NULL );
Checked::memcpy_s(pbmi->bmiColors, 3*sizeof( DWORD ), pdwBitfields, 3*sizeof( DWORD ));
}
}
hBitmap = ::CreateDIBSection( NULL, pbmi, DIB_RGB_COLORS, &m_pBits, NULL,
0 );
if( hBitmap == NULL )
{
return( FALSE );
}
Attach( hBitmap, (nHeight < 0) ? DIBOR_TOPDOWN : DIBOR_BOTTOMUP );
if( dwFlags&createAlphaChannel )
{
m_bHasAlphaChannel = true;
}
return( TRUE );
}
inline void CImage::Destroy() throw()
{
HBITMAP hBitmap;
if( m_hBitmap != NULL )
{
hBitmap = Detach();
::DeleteObject( hBitmap );
}
}
inline HBITMAP CImage::Detach() throw()
{
HBITMAP hBitmap;
ATLASSUME( m_hBitmap != NULL );
ATLASSUME( m_hDC == NULL );
hBitmap = m_hBitmap;
m_hBitmap = NULL;
m_pBits = NULL;
m_nWidth = 0;
m_nHeight = 0;
m_nBPP = 0;
m_nPitch = 0;
m_iTransparentColor = -1;
m_bHasAlphaChannel = false;
m_bIsDIBSection = false;
return( hBitmap );
}
inline BOOL CImage::Draw( HDC hDestDC, const RECT& rectDest ) const throw()
{
return( Draw( hDestDC, rectDest.left, rectDest.top, rectDest.right-
rectDest.left, rectDest.bottom-rectDest.top, 0, 0, m_nWidth,
m_nHeight ) );
}
inline BOOL CImage::Draw( HDC hDestDC, int xDest, int yDest, int nDestWidth, int nDestHeight ) const throw()
{
return( Draw( hDestDC, xDest, yDest, nDestWidth, nDestHeight, 0, 0, m_nWidth, m_nHeight ) );
}
inline BOOL CImage::Draw( HDC hDestDC, const POINT& pointDest ) const throw()
{
return( Draw( hDestDC, pointDest.x, pointDest.y, m_nWidth, m_nHeight, 0, 0, m_nWidth, m_nHeight ) );
}
inline BOOL CImage::Draw( HDC hDestDC, int xDest, int yDest ) const throw()
{
return( Draw( hDestDC, xDest, yDest, m_nWidth, m_nHeight, 0, 0, m_nWidth, m_nHeight ) );
}
inline BOOL CImage::Draw( HDC hDestDC, const RECT& rectDest, const RECT& rectSrc ) const throw()
{
return( Draw( hDestDC, rectDest.left, rectDest.top, rectDest.right-
rectDest.left, rectDest.bottom-rectDest.top, rectSrc.left, rectSrc.top,
rectSrc.right-rectSrc.left, rectSrc.bottom-rectSrc.top ) );
}
inline BOOL CImage::Draw( HDC hDestDC, int xDest, int yDest, int nDestWidth,
int nDestHeight, int xSrc, int ySrc, int nSrcWidth, int nSrcHeight ) const throw()
{
BOOL bResult;
ATLASSUME( m_hBitmap != NULL );
ATLASSERT( hDestDC != NULL );
ATLASSERT( nDestWidth > 0 );
ATLASSERT( nDestHeight > 0 );
ATLASSERT( nSrcWidth > 0 );
ATLASSERT( nSrcHeight > 0 );
GetDC();
#if WINVER >= 0x0500
if( (m_iTransparentColor != -1) && IsTransparencySupported() )
{
bResult = ::TransparentBlt( hDestDC, xDest, yDest, nDestWidth, nDestHeight,
m_hDC, xSrc, ySrc, nSrcWidth, nSrcHeight, GetTransparentRGB() );
}
else if( m_bHasAlphaChannel && IsTransparencySupported() )
{
BLENDFUNCTION bf;
bf.BlendOp = AC_SRC_OVER;
bf.BlendFlags = 0;
bf.SourceConstantAlpha = 0xff;
bf.AlphaFormat = AC_SRC_ALPHA;
bResult = ::AlphaBlend( hDestDC, xDest, yDest, nDestWidth, nDestHeight,
m_hDC, xSrc, ySrc, nSrcWidth, nSrcHeight, bf );
}
else
#endif // WINVER >= 0x0500
{
bResult = ::StretchBlt( hDestDC, xDest, yDest, nDestWidth, nDestHeight,
m_hDC, xSrc, ySrc, nSrcWidth, nSrcHeight, SRCCOPY );
}
ReleaseDC();
return( bResult );
}
inline const void* CImage::GetBits() const throw()
{
ATLASSUME( m_hBitmap != NULL );
ATLASSERT( IsDIBSection() );
return( m_pBits );
}
inline void* CImage::GetBits() throw()
{
ATLASSUME( m_hBitmap != NULL );
ATLASSERT( IsDIBSection() );
return( m_pBits );
}
inline int CImage::GetBPP() const throw()
{
ATLASSUME( m_hBitmap != NULL );
return( m_nBPP );
}
inline void CImage::GetColorTable( UINT iFirstColor, UINT nColors,
RGBQUAD* prgbColors ) const throw()
{
ATLASSUME( m_hBitmap != NULL );
ATLASSUME( m_pBits != NULL );
ATLASSERT( IsIndexed() );
GetDC();
::GetDIBColorTable( m_hDC, iFirstColor, nColors, prgbColors );
ReleaseDC();
}
inline HDC CImage::GetDC() const throw()
{
ATLASSUME( m_hBitmap != NULL );
m_nDCRefCount++;
if( m_hDC == NULL )
{
m_hDC = s_cache.GetDC();
m_hOldBitmap = HBITMAP( ::SelectObject( m_hDC, m_hBitmap ) );
}
return( m_hDC );
}
inline bool CImage::ShouldExcludeFormat( REFGUID guidFileType, DWORD dwExclude ) throw()
{
static const GUID* apguidFormats[] =
{
&Gdiplus::ImageFormatGIF,
&Gdiplus::ImageFormatBMP,
&Gdiplus::ImageFormatEMF,
&Gdiplus::ImageFormatWMF,
&Gdiplus::ImageFormatJPEG,
&Gdiplus::ImageFormatPNG,
&Gdiplus::ImageFormatTIFF,
&Gdiplus::ImageFormatIcon,
NULL
};
ATLASSERT( (dwExclude|excludeValid) == excludeValid );
for( int iFormat = 0; apguidFormats[iFormat] != NULL; iFormat++ )
{
if( guidFileType == *apguidFormats[iFormat] )
{
return( (dwExclude&(1<<iFormat)) != 0 );
}
}
return( (dwExclude&excludeOther) != 0 );
}
inline void CImage::BuildCodecFilterString( const Gdiplus::ImageCodecInfo* pCodecs, UINT nCodecs,
CSimpleString& strFilter, CSimpleArray< GUID >& aguidFileTypes, LPCTSTR pszAllFilesDescription,
DWORD dwExclude, TCHAR chSeparator )
{
if( pszAllFilesDescription != NULL )
{
aguidFileTypes.Add( GUID_NULL );
}
CString strAllExtensions;
CString strTempFilter;
for( UINT iCodec = 0; iCodec < nCodecs; iCodec++ )
{
const Gdiplus::ImageCodecInfo* pCodec = &pCodecs[iCodec];
if( !ShouldExcludeFormat( pCodec->FormatID, dwExclude ) )
{
CW2CT pwszFilenameExtension( pCodec->FilenameExtension );
strTempFilter += CW2CT( pCodec->FormatDescription );
strTempFilter += _T( " (" );
strTempFilter += pwszFilenameExtension;
strTempFilter += _T( ")" );
strTempFilter += chSeparator;
strTempFilter += pwszFilenameExtension;
strTempFilter += chSeparator;
aguidFileTypes.Add( pCodec->FormatID );
if( !strAllExtensions.IsEmpty() )
{
strAllExtensions += _T( ";" );
}
strAllExtensions += pwszFilenameExtension;
}
}
if( pszAllFilesDescription != NULL )
{
strFilter += pszAllFilesDescription;
strFilter += chSeparator;
strFilter += strAllExtensions;
strFilter += chSeparator;
}
strFilter += strTempFilter;
strFilter += chSeparator;
if( aguidFileTypes.GetSize() == 0 )
{
strFilter += chSeparator;
}
}
inline HRESULT CImage::GetImporterFilterString( CSimpleString& strImporters,
CSimpleArray< GUID >& aguidFileTypes, LPCTSTR pszAllFilesDescription /* = NULL */,
DWORD dwExclude /* = excludeDefaultLoad */, TCHAR chSeparator /* = '|' */ )
{
if( !InitGDIPlus() )
{
return( E_FAIL );
}
UINT nCodecs;
UINT nSize;
Gdiplus::Status status;
Gdiplus::ImageCodecInfo* pCodecs;
status = Gdiplus::GetImageDecodersSize( &nCodecs, &nSize );
USES_ATL_SAFE_ALLOCA;
pCodecs = static_cast< Gdiplus::ImageCodecInfo* >( _ATL_SAFE_ALLOCA(nSize, _ATL_SAFE_ALLOCA_DEF_THRESHOLD) );
if( pCodecs == NULL )
return E_OUTOFMEMORY;
status = Gdiplus::GetImageDecoders( nCodecs, nSize, pCodecs );
BuildCodecFilterString( pCodecs, nCodecs, strImporters, aguidFileTypes, pszAllFilesDescription, dwExclude, chSeparator );
return( S_OK );
}
inline HRESULT CImage::GetExporterFilterString( CSimpleString& strExporters,
CSimpleArray< GUID >& aguidFileTypes, LPCTSTR pszAllFilesDescription /* = NULL */,
DWORD dwExclude /* = excludeDefaultSave */, TCHAR chSeparator /* = '|' */ )
{
if( !InitGDIPlus() )
{
return( E_FAIL );
}
UINT nCodecs;
UINT nSize;
Gdiplus::Status status;
Gdiplus::ImageCodecInfo* pCodecs;
status = Gdiplus::GetImageDecodersSize( &nCodecs, &nSize );
USES_ATL_SAFE_ALLOCA;
pCodecs = static_cast< Gdiplus::ImageCodecInfo* >( _ATL_SAFE_ALLOCA(nSize, _ATL_SAFE_ALLOCA_DEF_THRESHOLD) );
if( pCodecs == NULL )
return E_OUTOFMEMORY;
status = Gdiplus::GetImageDecoders( nCodecs, nSize, pCodecs );
BuildCodecFilterString( pCodecs, nCodecs, strExporters, aguidFileTypes, pszAllFilesDescription, dwExclude, chSeparator );
return( S_OK );
}
inline int CImage::GetHeight() const throw()
{
ATLASSUME( m_hBitmap != NULL );
return( m_nHeight );
}
inline int CImage::GetMaxColorTableEntries() const throw()
{
ATLASSUME( m_hBitmap != NULL );
ATLASSERT( IsDIBSection() );
if( IsIndexed() )
{
return( 1<<m_nBPP );
}
else
{
return( 0 );
}
}
inline int CImage::GetPitch() const throw()
{
ATLASSUME( m_hBitmap != NULL );
ATLASSERT( IsDIBSection() );
return( m_nPitch );
}
inline COLORREF CImage::GetPixel( int x, int y ) const throw()
{
ATLASSUME( m_hBitmap != NULL );
ATLASSERT( (x >= 0) && (x < m_nWidth) );
ATLASSERT( (y >= 0) && (y < m_nHeight) );
GetDC();
COLORREF clr = ::GetPixel( m_hDC, x, y );
ReleaseDC();
return( clr );
}
inline const void* CImage::GetPixelAddress( int x, int y ) const throw()
{
ATLASSUME( m_hBitmap != NULL );
ATLASSERT( IsDIBSection() );
ATLASSERT( (x >= 0) && (x < m_nWidth) );
ATLASSERT( (y >= 0) && (y < m_nHeight) );
return( LPBYTE( m_pBits )+(y*m_nPitch)+((x*m_nBPP)/8) );
}
inline void* CImage::GetPixelAddress( int x, int y ) throw()
{
ATLASSUME( m_hBitmap != NULL );
ATLASSERT( IsDIBSection() );
ATLASSERT( (x >= 0) && (x < m_nWidth) );
ATLASSERT( (y >= 0) && (y < m_nHeight) );
return( LPBYTE( m_pBits )+(y*m_nPitch)+((x*m_nBPP)/8) );
}
inline LONG CImage::GetTransparentColor() const throw()
{
ATLASSUME( m_hBitmap != NULL );
ATLASSERT( (m_nBPP == 4) || (m_nBPP == 8) );
return( m_iTransparentColor );
}
inline int CImage::GetWidth() const throw()
{
ATLASSUME( m_hBitmap != NULL );
return( m_nWidth );
}
inline bool CImage::IsDIBSection() const throw()
{
return( m_bIsDIBSection );
}
inline bool CImage::IsIndexed() const throw()
{
ATLASSUME( m_hBitmap != NULL );
ATLASSERT( IsDIBSection() );
return( m_nBPP <= 8 );
}
inline bool CImage::IsNull() const throw()
{
return( m_hBitmap == NULL );
}