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GDI+ Plot ActiveX Control

, 5 Sep 2013
GDI+ 2D plot ActiveX control
/**************************************************************************\
*
* Copyright (c) 1998-2000, Microsoft Corp.  All Rights Reserved.
*
* Module Name:
*
*   Image Attributes
*
* Abstract:
*
*   Class for color adjustment object passed to Graphics.DrawImage
*
\**************************************************************************/

#ifndef _GDIPLUSIMAGEATTRIBUTES_H
#define _GDIPLUSIMAGEATTRIBUTES_H

class GpImageAttributes;

// There are 5 possible sets of color adjustments:
//          ColorAdjustDefault,
//          ColorAdjustBitmap,
//          ColorAdjustBrush,
//          ColorAdjustPen,
//          ColorAdjustText,

// Bitmaps, Brushes, Pens, and Text will all use any color adjustments
// that have been set into the default ImageAttributes until their own
// color adjustments have been set.  So as soon as any "Set" method is
// called for Bitmaps, Brushes, Pens, or Text, then they start from
// scratch with only the color adjustments that have been set for them.
// Calling Reset removes any individual color adjustments for a type
// and makes it revert back to using all the default color adjustments
// (if any).  The SetToIdentity method is a way to force a type to
// have no color adjustments at all, regardless of what previous adjustments
// have been set for the defaults or for that type.

class ImageAttributes : public GdiplusBase
{
    friend class Graphics;
    friend class TextureBrush;

public:

    ImageAttributes()
    {
        nativeImageAttr = NULL;
        lastResult = DllExports::GdipCreateImageAttributes(&nativeImageAttr);
    }

    ~ImageAttributes()
    {
        DllExports::GdipDisposeImageAttributes(nativeImageAttr);
    }

    ImageAttributes* Clone() const
    {
        GpImageAttributes* clone;

        SetStatus(DllExports::GdipCloneImageAttributes(
                                            nativeImageAttr,
                                            &clone));

        return new ImageAttributes(clone, lastResult);
    }

    // Set to identity, regardless of what the default color adjustment is.
    Status
    SetToIdentity(
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesToIdentity(
                                            nativeImageAttr,
                                            type));
    }

    // Remove any individual color adjustments, and go back to using the default
    Status
    Reset(
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipResetImageAttributes(
                                            nativeImageAttr,
                                            type));
    }

    Status
    SetColorMatrix(
        IN const ColorMatrix *colorMatrix,
        IN ColorMatrixFlags mode = ColorMatrixFlagsDefault,
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesColorMatrix(
                                            nativeImageAttr,
                                            type,
                                            TRUE,
                                            colorMatrix,
                                            NULL,
                                            mode));
    }

    Status ClearColorMatrix(
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesColorMatrix(
                                            nativeImageAttr,
                                            type,
                                            FALSE,
                                            NULL,
                                            NULL,
                                            ColorMatrixFlagsDefault));
    }

    Status
    SetColorMatrices(
        IN const ColorMatrix *colorMatrix,
        IN const ColorMatrix *grayMatrix,
        IN ColorMatrixFlags mode = ColorMatrixFlagsDefault,
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesColorMatrix(
                                            nativeImageAttr,
                                            type,
                                            TRUE,
                                            colorMatrix,
                                            grayMatrix,
                                            mode));
    }

    Status ClearColorMatrices(
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesColorMatrix(
                                            nativeImageAttr,
                                            type,
                                            FALSE,
                                            NULL,
                                            NULL,
                                            ColorMatrixFlagsDefault));
    }

    Status SetThreshold(
        IN REAL threshold,
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesThreshold(
                                            nativeImageAttr,
                                            type,
                                            TRUE,
                                            threshold));
    }

    Status ClearThreshold(
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesThreshold(
                                            nativeImageAttr,
                                            type,
                                            FALSE,
                                            0.0));
    }

    Status SetGamma(
        IN REAL gamma,
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesGamma(
                                            nativeImageAttr,
                                            type,
                                            TRUE,
                                            gamma));
    }

    Status ClearGamma(
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesGamma(
                                            nativeImageAttr,
                                            type,
                                            FALSE,
                                            0.0));
    }

    Status SetNoOp(
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesNoOp(
                                            nativeImageAttr,
                                            type,
                                            TRUE));
    }

    Status ClearNoOp(
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesNoOp(
                                            nativeImageAttr,
                                            type,
                                            FALSE));
    }

    Status SetColorKey(
        IN const Color& colorLow, 
        IN const Color& colorHigh,
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesColorKeys(
                                            nativeImageAttr,
                                            type,
                                            TRUE,
                                            colorLow.GetValue(),
                                            colorHigh.GetValue()));
    }

    Status ClearColorKey(
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesColorKeys(
                                            nativeImageAttr,
                                            type,
                                            FALSE,
                                            NULL,
                                            NULL));
    }

    Status SetOutputChannel(
        IN ColorChannelFlags channelFlags,
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesOutputChannel(
                                            nativeImageAttr,
                                            type,
                                            TRUE,
                                            channelFlags));
    }
    
    Status ClearOutputChannel(
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesOutputChannel(
                                            nativeImageAttr,
                                            type,
                                            FALSE,
                                            ColorChannelFlagsLast));
    }

    Status SetOutputChannelColorProfile(
        IN const WCHAR *colorProfileFilename,
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesOutputChannelColorProfile(
                                            nativeImageAttr,
                                            type,
                                            TRUE,
                                            colorProfileFilename));
    }
    
    Status ClearOutputChannelColorProfile(
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesOutputChannelColorProfile(
                                            nativeImageAttr,
                                            type,
                                            FALSE,
                                            NULL));
    }
    
    Status SetRemapTable(
        IN UINT mapSize, 
        IN const ColorMap *map,
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesRemapTable(
                                            nativeImageAttr,
                                            type,
                                            TRUE,
                                            mapSize,
                                            map));
    }

    Status ClearRemapTable(
        IN ColorAdjustType type = ColorAdjustTypeDefault
        )
    {
        return SetStatus(DllExports::GdipSetImageAttributesRemapTable(
                                            nativeImageAttr,
                                            type,
                                            FALSE,
                                            0,
                                            NULL));
    }

    Status SetBrushRemapTable(IN UINT mapSize, 
                              IN const ColorMap *map)
    {
        return this->SetRemapTable(mapSize, map, ColorAdjustTypeBrush);
    }

    Status ClearBrushRemapTable()
    {
        return this->ClearRemapTable(ColorAdjustTypeBrush);
    }

    Status SetWrapMode(IN WrapMode wrap, 
                       IN const Color& color = Color(), 
                       IN BOOL clamp = FALSE) 
    {
        ARGB argb = color.GetValue();

        return SetStatus(DllExports::GdipSetImageAttributesWrapMode(
                           nativeImageAttr, wrap, argb, clamp));
    }

    #ifndef DCR_USE_NEW_145139
    Status SetICMMode(IN BOOL on)
    {
        on;
        // This is not implemented.
        // The supported method for doing ICM conversion from the embedded 
        // ICC profile is to use the Bitmap constructor from a file or stream
        // and specify TRUE for the useIcm parameter. This will cause the 
        // image to be ICM converted when it's loaded from the file/stream
        // if the profile exists.
        return SetStatus(NotImplemented);
//          DllExports::GdipSetImageAttributesICMMode(nativeImageAttr, on)
    }
    #endif

    // The flags of the palette are ignored.
    Status GetAdjustedPalette(IN OUT ColorPalette* colorPalette,
                              IN ColorAdjustType colorAdjustType) const 
    {
        return SetStatus(DllExports::GdipGetImageAttributesAdjustedPalette(
                           nativeImageAttr, colorPalette, colorAdjustType));
    }

    Status GetLastStatus() const
    {
        Status lastStatus = lastResult;
        lastResult = Ok;
    
        return lastStatus;
    }
    
#ifdef DCR_USE_NEW_250932

private:
    ImageAttributes(const ImageAttributes &);
    ImageAttributes& operator=(const ImageAttributes &);

#endif

protected:
    ImageAttributes(GpImageAttributes* imageAttr, Status status)
    {
        SetNativeImageAttr(imageAttr);
        lastResult = status;
    }

    VOID SetNativeImageAttr(GpImageAttributes* nativeImageAttr)
    {
        this->nativeImageAttr = nativeImageAttr;
    }
    
    Status SetStatus(Status status) const
    {
        if (status != Ok)
            return (lastResult = status);
        else 
            return status;
    }

protected:
    GpImageAttributes* nativeImageAttr;
    mutable Status lastResult;
};

#endif

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License

This article, along with any associated source code and files, is licensed under The GNU Lesser General Public License (LGPLv3)

About the Author

Leslie Zhai
Engineer
China China
An individual human existence should be like a river - small at first, narrowly contained within its banks, and rushing passionately past boulders and over waterfalls. Gradually the river grows wider, the banks recede, the waters flow more quietly, and in the end, without any visible break, they become merged in the sea, and painlessly lose their individual being.
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