GDI/图象编程

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Visual C++

GdiPlusBitmap.h：源码内容
							/**************************************************************************
*
* Copyright (c) 1998-2000, Microsoft Corp.  All Rights Reserved.
*
* Module Name:
*
*   GdiplusBitmap.h
*
* Abstract:
*
*   Bitmap related declarations
*
**************************************************************************/
#ifndef _GDIPLUSBITMAP_H
#define _GDIPLUSBITMAP_H
// NOTE:
//  Our current choice for the public API is to use constructors
//  instead of static load functions to create image objects.
//
//  I've kept the static load functions here for now so that
//  existing test programs are not broken. But they should
//  eventually be taken out.
#ifndef DCR_USE_NEW_140782
inline 
Image::Image(
    IN const WCHAR* filename
    )
{
    nativeImage = NULL;
    lastResult = DllExports::GdipLoadImageFromFile(filename, &nativeImage);
}
inline 
Image::Image(
    IN IStream* stream
    )
{
    nativeImage = NULL;
    lastResult = DllExports::GdipLoadImageFromStream(stream, &nativeImage);
}
inline Image* 
Image::FromFile(
    IN const WCHAR* filename
    )
{
    return new Image(filename);
}
inline Image*
Image::FromStream(
    IN IStream* stream
    )
{
    return new Image(stream);
}
#else
inline 
Image::Image(
    IN const WCHAR* filename,
    IN BOOL useEmbeddedColorManagement
    )
{
    nativeImage = NULL;
    if(useEmbeddedColorManagement)
    {
        lastResult = DllExports::GdipLoadImageFromFileICM(
            filename, 
            &nativeImage
        );
    }
    else
    {      
        lastResult = DllExports::GdipLoadImageFromFile(
            filename, 
            &nativeImage
        );
    }
}
inline 
Image::Image(
    IN IStream* stream,
    IN BOOL useEmbeddedColorManagement
    )
{
    nativeImage = NULL;
    if(useEmbeddedColorManagement)
    {
        lastResult = DllExports::GdipLoadImageFromStreamICM(
            stream, 
            &nativeImage
        );
    }
    else
    {
        lastResult = DllExports::GdipLoadImageFromStream(
            stream, 
            &nativeImage
        );
    }
}
inline Image* 
Image::FromFile(
    IN const WCHAR* filename,
    IN BOOL useEmbeddedColorManagement
    )
{
    return new Image(
        filename, 
        useEmbeddedColorManagement
    );
}
inline Image*
Image::FromStream(
    IN IStream* stream,
    IN BOOL useEmbeddedColorManagement
    )
{
    return new Image(
        stream,
        useEmbeddedColorManagement
    );
}
#endif
inline 
Image::~Image()
{
    DllExports::GdipDisposeImage(nativeImage);
}
inline Image* 
Image::Clone() 
{
    GpImage *cloneimage = NULL;
    SetStatus(DllExports::GdipCloneImage(nativeImage, &cloneimage));
    return new Image(cloneimage, lastResult);
}
// Encorder Parameter
inline UINT
Image::GetEncoderParameterListSize(
    IN const CLSID* clsidEncoder
    ) 
{
    UINT size = 0;
    SetStatus(DllExports::GdipGetEncoderParameterListSize(nativeImage,
                                                          clsidEncoder,
                                                          &size));
    return size;
}
inline Status
Image::GetEncoderParameterList(
    IN const CLSID* clsidEncoder,
    IN UINT size,
    OUT EncoderParameters* buffer
    )
{
    return SetStatus(DllExports::GdipGetEncoderParameterList(nativeImage,
                                                             clsidEncoder,
                                                             size,
                                                             buffer));
}
// Save images
inline Status
Image::Save(
    IN const WCHAR* filename,
    IN const CLSID* clsidEncoder,
    IN const EncoderParameters *encoderParams
    )
{
    return SetStatus(DllExports::GdipSaveImageToFile(nativeImage,
                                                     filename,
                                                     clsidEncoder,
                                                     encoderParams));
}
inline Status
Image::Save(
    IN IStream* stream,
    IN const CLSID* clsidEncoder,
    IN const EncoderParameters *encoderParams
    )
{
    return SetStatus(DllExports::GdipSaveImageToStream(nativeImage,
                                                       stream,
                                                       clsidEncoder,
                                                       encoderParams));
}
inline Status
Image::SaveAdd(
    IN const EncoderParameters *encoderParams
    )
{
    return SetStatus(DllExports::GdipSaveAdd(nativeImage,
                                             encoderParams));
}
inline Status
Image::SaveAdd(
    IN Image* newImage,
    IN const EncoderParameters *encoderParams
    )
{
    if ( newImage == NULL )
    {
        return SetStatus(InvalidParameter);
    }
    return SetStatus(DllExports::GdipSaveAddImage(nativeImage,
                                                  newImage->nativeImage,
                                                  encoderParams));
}
// Get size and type information
inline ImageType 
Image::GetType() const
{
    ImageType type = ImageTypeUnknown;
    SetStatus(DllExports::GdipGetImageType(nativeImage, &type));
    return type;
}
inline Status 
Image::GetPhysicalDimension(
    OUT SizeF* size
    ) 
{
    if (size == NULL) 
    {
        return SetStatus(InvalidParameter);
    }
    
    REAL width, height;
    Status status;
    status = SetStatus(DllExports::GdipGetImageDimension(nativeImage,
                                                         &width, &height));
    size->Width  = width;
    size->Height = height;
    return status;
}
inline Status 
Image::GetBounds(
    OUT RectF *srcRect, 
    OUT Unit *srcUnit
    )
{
    return SetStatus(DllExports::GdipGetImageBounds(nativeImage,
                                                    srcRect, srcUnit));
}
inline UINT 
Image::GetWidth()
{
    UINT width = 0;
    SetStatus(DllExports::GdipGetImageWidth(nativeImage, &width));
    return width;
}
inline UINT 
Image::GetHeight()
{
    UINT height = 0;
    SetStatus(DllExports::GdipGetImageHeight(nativeImage, &height));
    return height;
}
inline REAL 
Image::GetHorizontalResolution()
{
    REAL resolution = 0.0f;
    SetStatus(DllExports::GdipGetImageHorizontalResolution(nativeImage, &resolution));
    return resolution;
}
inline REAL 
Image::GetVerticalResolution()
{
    REAL resolution = 0.0f;
    SetStatus(DllExports::GdipGetImageVerticalResolution(nativeImage, &resolution));
    return resolution;
}
inline UINT 
Image::GetFlags()
{
    UINT flags = 0;
    SetStatus(DllExports::GdipGetImageFlags(nativeImage, &flags));
    return flags;
}
inline Status 
Image::GetRawFormat(OUT GUID *format)
{
    return SetStatus(DllExports::GdipGetImageRawFormat(nativeImage, format));
}
inline PixelFormat 
Image::GetPixelFormat()
{
    PixelFormat format;
    SetStatus(DllExports::GdipGetImagePixelFormat(nativeImage, &format));
    return format;
}
inline INT 
Image::GetPaletteSize()
{
    INT size = 0;
    
    SetStatus(DllExports::GdipGetImagePaletteSize(nativeImage, &size));
    
    return size;
}
inline Status 
Image::GetPalette(
    OUT ColorPalette *palette,
    IN INT size
)
{
    return SetStatus(DllExports::GdipGetImagePalette(nativeImage, palette, size));
}
inline Status 
Image::SetPalette(
    IN const ColorPalette *palette
    )
{
    return SetStatus(DllExports::GdipSetImagePalette(nativeImage, palette));
}
// Thumbnail support
inline Image* 
Image::GetThumbnailImage(
    IN UINT thumbWidth,
    IN UINT thumbHeight,
    IN GetThumbnailImageAbort callback,
    IN VOID* callbackData
    )
{
    GpImage *thumbimage = NULL;
    SetStatus(DllExports::GdipGetImageThumbnail(nativeImage,
                                                thumbWidth, thumbHeight,
                                                &thumbimage,
                                                callback, callbackData));
    Image *newImage = new Image(thumbimage, lastResult);
    if (newImage == NULL) 
    {
        DllExports::GdipDisposeImage(thumbimage);
    }
    return newImage;
}
// Multi-frame support
inline UINT 
Image::GetFrameDimensionsCount()
{
    UINT count = 0;
    SetStatus(DllExports::GdipImageGetFrameDimensionsCount(nativeImage,
                                                                  &count));
    return count;
}
inline Status 
Image::GetFrameDimensionsList(
    OUT GUID* dimensionIDs, 
    IN UINT count
    )
{
    return SetStatus(DllExports::GdipImageGetFrameDimensionsList(nativeImage,
                                                                 dimensionIDs,
                                                                 count));
}
inline UINT 
Image::GetFrameCount(
    IN const GUID* dimensionID
    )
{
    UINT count = 0;
    SetStatus(DllExports::GdipImageGetFrameCount(nativeImage,
                                                        dimensionID,
                                                        &count));
    return count;
}
inline Status 
Image::SelectActiveFrame(
    IN const GUID *dimensionID, 
    IN UINT frameIndex
    )
{
    return SetStatus(DllExports::GdipImageSelectActiveFrame(nativeImage,
                                                            dimensionID,
                                                            frameIndex));
}
inline Status
Image::RotateFlip(
    IN RotateFlipType rotateFlipType
    )
{
    return SetStatus(DllExports::GdipImageRotateFlip(nativeImage,
                                                     rotateFlipType));
}
// Image property related functions
inline UINT 
Image::GetPropertyCount()
{
    UINT numProperty = 0;
    SetStatus(DllExports::GdipGetPropertyCount(nativeImage,
                                               &numProperty));
    return numProperty;
}
inline Status 
Image::GetPropertyIdList(
    IN UINT numOfProperty, 
    OUT PROPID* list
    )
{
    return SetStatus(DllExports::GdipGetPropertyIdList(nativeImage,
                                                       numOfProperty, list));
}
    
inline UINT 
Image::GetPropertyItemSize(
    IN PROPID propId
    )
{
    UINT size = 0;
    SetStatus(DllExports::GdipGetPropertyItemSize(nativeImage,
                                                  propId,
                                                  &size));
    return size;
}
inline Status 
Image::GetPropertyItem(
    IN PROPID propId, 
    IN UINT propSize,
    OUT PropertyItem* buffer
    )
{
    return SetStatus(DllExports::GdipGetPropertyItem(nativeImage,
                                                     propId, propSize, buffer));
}
inline Status 
Image::GetPropertySize(
    OUT UINT* totalBufferSize, 
    OUT UINT* numProperties
    )
{
    return SetStatus(DllExports::GdipGetPropertySize(nativeImage,
                                                     totalBufferSize,
                                                     numProperties));
}
inline Status 
Image::GetAllPropertyItems(
    IN UINT totalBufferSize,
    IN UINT numProperties,
    OUT PropertyItem* allItems
    )
{
    if (allItems == NULL) 
    {
        return SetStatus(InvalidParameter);
    }
    return SetStatus(DllExports::GdipGetAllPropertyItems(nativeImage,
                                                         totalBufferSize,
                                                         numProperties,
                                                         allItems));
}
inline Status 
Image::RemovePropertyItem(
    IN PROPID propId
    )
{
    return SetStatus(DllExports::GdipRemovePropertyItem(nativeImage, propId));
}
inline Status 
Image::SetPropertyItem(
    IN const PropertyItem* item
    )
{
    return SetStatus(DllExports::GdipSetPropertyItem(nativeImage, item));
}
// Get/SetLayout
// Support for Middle East localization (right-to-left mirroring)
inline ImageLayout
Image::GetLayout() const
{
    ImageLayout layout;
    SetStatus(DllExports::GdipGetImageLayout(nativeImage, &layout));
    return layout;
}
inline Status
Image::SetLayout(IN const ImageLayout layout)
{
    return SetStatus(
        DllExports::GdipSetImageLayout(nativeImage, layout)
    );
}
inline Status
Image::GetLastStatus() const
{
    Status lastStatus = lastResult;
    lastResult = Ok;
    return lastStatus;
}
inline 
Image::Image(GpImage *nativeImage, Status status)
{
    SetNativeImage(nativeImage);
    lastResult = status;
}
inline VOID 
Image::SetNativeImage(GpImage *nativeImage)
{
    this->nativeImage = nativeImage;
}
inline 
Bitmap::Bitmap(
    IN const WCHAR *filename, 
    IN BOOL useEmbeddedColorManagement
    )
{
    GpBitmap *bitmap = NULL;
    if(useEmbeddedColorManagement) 
    {
        lastResult = DllExports::GdipCreateBitmapFromFileICM(filename, &bitmap);
    }
    else
    {
        lastResult = DllExports::GdipCreateBitmapFromFile(filename, &bitmap);
    }
    SetNativeImage(bitmap);
}
inline 
Bitmap::Bitmap(
    IN IStream *stream, 
    IN BOOL useEmbeddedColorManagement
    )
{
    GpBitmap *bitmap = NULL;
    if(useEmbeddedColorManagement)
    {
        lastResult = DllExports::GdipCreateBitmapFromStreamICM(stream, &bitmap);
    }
    else
    {
        lastResult = DllExports::GdipCreateBitmapFromStream(stream, &bitmap);
    }
    SetNativeImage(bitmap);
}
inline
Bitmap::Bitmap(
    IN INT width,
    IN INT height,
    IN INT stride,
    IN PixelFormat format,
    IN BYTE *scan0
    )
{
    GpBitmap *bitmap = NULL;
    lastResult = DllExports::GdipCreateBitmapFromScan0(width,
                                                       height,
                                                       stride,
                                                       format,
                                                       scan0,
                                                       &bitmap);
    SetNativeImage(bitmap);
}
inline 
Bitmap::Bitmap(
    IN INT width,
    IN INT height,
    IN PixelFormat format
    )
{
    GpBitmap *bitmap = NULL;
    lastResult = DllExports::GdipCreateBitmapFromScan0(width,
                                                       height,
                                                       0,
                                                       format,
                                                       NULL,
                                                       &bitmap);
    SetNativeImage(bitmap);
}
inline
Bitmap::Bitmap(
    IN INT width, 
    IN INT height, 
    IN Graphics* target)
{
    GpBitmap *bitmap = NULL;
    lastResult = DllExports::GdipCreateBitmapFromGraphics(width,
                                                          height,
                                                          target->nativeGraphics,
                                                          &bitmap);
    SetNativeImage(bitmap);
}
inline 
Bitmap::Bitmap(
    IN IDirectDrawSurface7 * surface
    )
{
    GpBitmap *bitmap = NULL;
    lastResult = DllExports::GdipCreateBitmapFromDirectDrawSurface(surface,
                                                       &bitmap);
    SetNativeImage(bitmap);
}
inline 
Bitmap::Bitmap(
    IN const BITMAPINFO* gdiBitmapInfo, 
    IN VOID* gdiBitmapData
    )
{
    GpBitmap *bitmap = NULL;
    lastResult = DllExports::GdipCreateBitmapFromGdiDib(gdiBitmapInfo,
                                                        gdiBitmapData,
                                                        &bitmap);
    SetNativeImage(bitmap);
}
inline 
Bitmap::Bitmap(
    IN HBITMAP hbm, 
    IN HPALETTE hpal
    )
{
    GpBitmap *bitmap = NULL;
    lastResult = DllExports::GdipCreateBitmapFromHBITMAP(hbm, hpal, &bitmap);
    SetNativeImage(bitmap);
}
inline 
Bitmap::Bitmap(
    IN HICON hicon
    )
{
    GpBitmap *bitmap = NULL;
    lastResult = DllExports::GdipCreateBitmapFromHICON(hicon, &bitmap);
    SetNativeImage(bitmap);
}
inline 
Bitmap::Bitmap(
    IN HINSTANCE hInstance, 
    IN const WCHAR *bitmapName
    )
{
    GpBitmap *bitmap = NULL;
    lastResult = DllExports::GdipCreateBitmapFromResource(hInstance,
                                                          bitmapName,
                                                          &bitmap);
    SetNativeImage(bitmap);
}
inline Bitmap* 
Bitmap::FromFile(
    IN const WCHAR *filename,
    IN BOOL useEmbeddedColorManagement
    )
{
    return new Bitmap(
        filename, 
        useEmbeddedColorManagement
    );
}
inline Bitmap* 
Bitmap::FromStream(
    IN IStream *stream,
    IN BOOL useEmbeddedColorManagement
    )
{
    return new Bitmap(
        stream, 
        useEmbeddedColorManagement
    );
}
inline Bitmap* 
Bitmap::FromDirectDrawSurface7(
    IN IDirectDrawSurface7* surface
    )
{
    return new Bitmap(surface);
}
inline Bitmap* 
Bitmap::FromBITMAPINFO(
    IN const BITMAPINFO* gdiBitmapInfo, 
    IN VOID* gdiBitmapData)
{
    return new Bitmap(gdiBitmapInfo, gdiBitmapData);
}
inline Bitmap* 
Bitmap::FromHBITMAP(
    IN HBITMAP hbm, 
    IN HPALETTE hpal
    )
{
    return new Bitmap(hbm, hpal);
}
inline Bitmap* 
Bitmap::FromHICON(
    IN HICON hicon
    )
{
    return new Bitmap(hicon);
}
inline Bitmap* 
Bitmap::FromResource(
    IN HINSTANCE hInstance, 
    IN const WCHAR *bitmapName)
{
    return new Bitmap(hInstance, bitmapName);
}
inline Status 
Bitmap::GetHBITMAP(
    IN const Color& colorBackground,
    OUT HBITMAP* hbmReturn
    )
{
    return SetStatus(DllExports::GdipCreateHBITMAPFromBitmap(
                                        static_cast<GpBitmap*>(nativeImage),
                                        hbmReturn,
                                        colorBackground.GetValue()));
}
inline Status 
Bitmap::GetHICON(
    OUT HICON* hiconReturn
    )
{
    return SetStatus(DllExports::GdipCreateHICONFromBitmap(
                                        static_cast<GpBitmap*>(nativeImage),
                                        hiconReturn));
}
inline Bitmap* 
Bitmap::Clone(
    IN const Rect& rect,
    IN PixelFormat format
    )
{
    return Clone(rect.X, rect.Y, rect.Width, rect.Height, format);
}
inline Bitmap* 
Bitmap::Clone(
    IN INT x,
    IN INT y,
    IN INT width,
    IN INT height,
    IN PixelFormat format
    )
{
   GpBitmap* gpdstBitmap = NULL;
   Bitmap* bitmap;
   lastResult = DllExports::GdipCloneBitmapAreaI(
                               x,
                               y,
                               width,
                               height,
                               format,
                               (GpBitmap *)nativeImage,
                               &gpdstBitmap);
   if (lastResult == Ok)
   {
       bitmap = new Bitmap(gpdstBitmap);
       if (bitmap == NULL) 
       {
           DllExports::GdipDisposeImage(gpdstBitmap);
       }
       return bitmap;
   }
   else
       return NULL;
}
inline Bitmap* 
Bitmap::Clone(
    IN const RectF& rect,
    IN PixelFormat format
    )
{
    return Clone(rect.X, rect.Y, rect.Width, rect.Height, format);
}
inline Bitmap*
Bitmap::Clone(
    IN REAL x,
    IN REAL y,
    IN REAL width,
    IN REAL height,
    IN PixelFormat format
    )
{
   GpBitmap* gpdstBitmap = NULL;
   Bitmap* bitmap;
   SetStatus(DllExports::GdipCloneBitmapArea(
                               x,
                               y,
                               width,
                               height,
                               format,
                               (GpBitmap *)nativeImage,
                               &gpdstBitmap));
   if (lastResult == Ok)
   {
       bitmap = new Bitmap(gpdstBitmap);
       if (bitmap == NULL) 
       {
           DllExports::GdipDisposeImage(gpdstBitmap);
       }
       return bitmap;
   }
   else
       return NULL;
}
inline Bitmap::Bitmap(GpBitmap *nativeBitmap)
{
    lastResult = Ok;
    SetNativeImage(nativeBitmap);
}
inline Status
Bitmap::LockBits(
    IN const Rect& rect,
    IN UINT flags,
    IN PixelFormat format,
    OUT BitmapData* lockedBitmapData
)
{
    return SetStatus(DllExports::GdipBitmapLockBits(
                                    static_cast<GpBitmap*>(nativeImage),
                                    &rect,
                                    flags,
                                    format,
                                    lockedBitmapData));
}
inline Status 
Bitmap::UnlockBits(
    IN BitmapData* lockedBitmapData
    )
{
    return SetStatus(DllExports::GdipBitmapUnlockBits(
                                    static_cast<GpBitmap*>(nativeImage),
                                    lockedBitmapData));
}
inline Status 
Bitmap::GetPixel(
    IN INT x, 
    IN INT y, 
    OUT Color *color) 
{
    ARGB argb;
    Status status = SetStatus(DllExports::GdipBitmapGetPixel(
        static_cast<GpBitmap *>(nativeImage),
        x, y,        
        &argb));
    if (status == Ok) 
    {
        color->SetValue(argb);
    }
    return  status;
}
inline Status 
Bitmap::SetPixel(
    IN INT x, 
    IN INT y, 
    IN const Color& color) 
{
    return SetStatus(DllExports::GdipBitmapSetPixel(
        static_cast<GpBitmap *>(nativeImage),
        x, y,
        color.GetValue()));
}
inline Status 
Bitmap::SetResolution(
    IN REAL xdpi, 
    IN REAL ydpi)
{
    return SetStatus(DllExports::GdipBitmapSetResolution(
        static_cast<GpBitmap *>(nativeImage),
        xdpi, ydpi));
}
#endif

						