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GDI+ Plot ActiveX Control

, 5 Sep 2013 LGPL3
GDI+ 2D plot ActiveX control
/**************************************************************************\
* 
* Copyright (c) 1998-2000, Microsoft Corp.  All Rights Reserved.
*
* Module Name:
*
*   GdiplusPen.h
*
* Abstract:
*
*   Pen API related declarations
*
\**************************************************************************/
#ifndef _GDIPLUSPEN_H
#define _GDIPLUSPEN_H

//--------------------------------------------------------------------------
// class for various pen types
//--------------------------------------------------------------------------

class Pen : public GdiplusBase
{
public:
    friend class GraphicsPath;
    friend class Graphics;

    // abstract Clone() can't be implemented here because it can't
    // new an object with pure virtual functions

    // Constructors

    Pen(IN const Color& color, 
        IN REAL width = 1.0f)
    {
        Unit unit = UnitWorld;
        nativePen = NULL;
        lastResult = DllExports::GdipCreatePen1(color.GetValue(),
                                    width, unit, &nativePen);
    }

    Pen(IN const Brush* brush, 
        IN REAL width = 1.0f)
    {
        Unit unit = UnitWorld;
        nativePen = NULL;
        lastResult = DllExports::GdipCreatePen2(brush->nativeBrush,
                                    width, unit, &nativePen);
    }

    ~Pen()
    {
        DllExports::GdipDeletePen(nativePen);
    }

    Pen* Clone() const
    {
        GpPen *clonePen = NULL;

        lastResult = DllExports::GdipClonePen(nativePen, &clonePen);
   
        return new Pen(clonePen, lastResult);
    }

    Status SetWidth(IN REAL width)
    {
        return SetStatus(DllExports::GdipSetPenWidth(nativePen, width));
    }

    REAL GetWidth() const
    {
        REAL width;

        SetStatus(DllExports::GdipGetPenWidth(nativePen, &width));
        
        return width;
    }
    
    // Set/get line caps: start, end, and dash

    // Line cap and join APIs by using LineCap and LineJoin enums.

    #ifdef DCR_USE_NEW_197819
    Status SetLineCap(IN LineCap startCap, 
                      IN LineCap endCap, 
                      IN DashCap dashCap)
    {
        return SetStatus(DllExports::GdipSetPenLineCap197819(nativePen, 
                                   startCap, endCap, dashCap));
    }
    #else
    Status SetLineCap(IN LineCap startCap, 
                      IN LineCap endCap, 
                      IN LineCap dashCap)
    {
        return SetStatus(DllExports::GdipSetPenLineCap(nativePen, 
                                   startCap, endCap, dashCap));
    }
    #endif // DCR_USE_NEW_197819

    Status SetStartCap(IN LineCap startCap)
    {
        return SetStatus(DllExports::GdipSetPenStartCap(nativePen, startCap));
    }

    Status SetEndCap(IN LineCap endCap)
    {
        return SetStatus(DllExports::GdipSetPenEndCap(nativePen, endCap));
    }

    #ifdef DCR_USE_NEW_197819
    Status SetDashCap(IN DashCap dashCap)
    {
        return SetStatus(DllExports::GdipSetPenDashCap197819(nativePen,
                                   dashCap));
    }
    #else
    Status SetDashCap(IN LineCap dashCap)
    {
        return SetStatus(DllExports::GdipSetPenDashCap(nativePen, dashCap));
    }
    #endif // DCR_USE_NEW_197819

    LineCap GetStartCap() const
    {
        LineCap startCap;

        SetStatus(DllExports::GdipGetPenStartCap(nativePen, &startCap));
        
        return startCap;
    }

    LineCap GetEndCap() const
    {
        LineCap endCap;

        SetStatus(DllExports::GdipGetPenEndCap(nativePen, &endCap));

        return endCap;
    }

    #ifdef DCR_USE_NEW_197819
    DashCap GetDashCap() const
    {
        DashCap dashCap;

        SetStatus(DllExports::GdipGetPenDashCap197819(nativePen,
                            &dashCap));

        return dashCap;
    }
    #else
    LineCap GetDashCap() const
    {
        LineCap dashCap;

        SetStatus(DllExports::GdipGetPenDashCap(nativePen, &dashCap));

        return dashCap;
    }
    #endif // DCR_USE_NEW_197819


    // Set/get line join

    Status SetLineJoin(IN LineJoin lineJoin)
    {
        return SetStatus(DllExports::GdipSetPenLineJoin(nativePen, lineJoin));
    }

    LineJoin GetLineJoin() const
    {
        LineJoin lineJoin;
        
        SetStatus(DllExports::GdipGetPenLineJoin(nativePen, &lineJoin));
        
        return lineJoin;
    }

    Status SetCustomStartCap(IN const CustomLineCap* customCap)
    {
        GpCustomLineCap* nativeCap = NULL;
        if(customCap)
            nativeCap = customCap->nativeCap;

        return SetStatus(DllExports::GdipSetPenCustomStartCap(nativePen, nativeCap));
    }

    Status GetCustomStartCap(OUT CustomLineCap* customCap) const
    {
        if(!customCap)
            return SetStatus(InvalidParameter);

        return SetStatus(DllExports::GdipGetPenCustomStartCap(nativePen, &(customCap->nativeCap)));
    }

    Status SetCustomEndCap(IN const CustomLineCap* customCap)
    {
        GpCustomLineCap* nativeCap = NULL;
        if(customCap)
            nativeCap = customCap->nativeCap;

        return SetStatus(DllExports::GdipSetPenCustomEndCap(nativePen, nativeCap));
    }

    Status GetCustomEndCap(OUT CustomLineCap* customCap) const
    {
        if(!customCap)
            return SetStatus(InvalidParameter);

        return SetStatus(DllExports::GdipGetPenCustomEndCap(nativePen, &(customCap->nativeCap)));
    }

    Status SetMiterLimit(IN REAL miterLimit)
    {
        return SetStatus(DllExports::GdipSetPenMiterLimit(nativePen, miterLimit));
    }

    REAL GetMiterLimit() const
    {
        REAL miterLimit;

        SetStatus(DllExports::GdipGetPenMiterLimit(nativePen, &miterLimit));

        return miterLimit;
    }

    // Set/get pen mode
    Status SetAlignment(IN PenAlignment penAlignment)
    {
        return SetStatus(DllExports::GdipSetPenMode(nativePen, penAlignment));
    }

    PenAlignment GetAlignment() const
    {
        PenAlignment penAlignment;
        
        SetStatus(DllExports::GdipGetPenMode(nativePen, &penAlignment));
        
        return penAlignment;
    }
    
    // Set/get pen transform
    Status SetTransform(IN const Matrix* matrix)
    {
        return SetStatus(DllExports::GdipSetPenTransform(nativePen, 
                                                         matrix->nativeMatrix));
    }

    Status GetTransform(OUT Matrix* matrix) const
    {
        return SetStatus(DllExports::GdipGetPenTransform(nativePen, matrix->nativeMatrix));
    }

    Status ResetTransform()
    {
        return SetStatus(DllExports::GdipResetPenTransform(nativePen));
    }

    Status MultiplyTransform(IN const Matrix* matrix,
                             IN MatrixOrder order = MatrixOrderPrepend)
    {
        return SetStatus(DllExports::GdipMultiplyPenTransform(nativePen,
                                                              matrix->nativeMatrix,
                                                              order));
    }

    Status TranslateTransform(IN REAL dx, 
                              IN REAL dy,
                              IN MatrixOrder order = MatrixOrderPrepend)
    {
        return SetStatus(DllExports::GdipTranslatePenTransform(nativePen,
                                                               dx, dy, order));
    }

    Status ScaleTransform(IN REAL sx, 
                          IN REAL sy,
                          IN MatrixOrder order = MatrixOrderPrepend)
    {
        return SetStatus(DllExports::GdipScalePenTransform(nativePen,
                                                             sx, sy, order));
    }

    Status RotateTransform(IN REAL angle, 
                           IN MatrixOrder order = MatrixOrderPrepend)
    {
        return SetStatus(DllExports::GdipRotatePenTransform(nativePen,
                                                              angle, order));
    }

    PenType GetPenType() const
    {
       PenType type;
       SetStatus(DllExports::GdipGetPenFillType(nativePen, &type));

       return type;
    }

    Status SetColor(IN const Color& color)
    {
        return SetStatus(DllExports::GdipSetPenColor(nativePen,
                                                     color.GetValue()));
    }

    Status SetBrush(IN const Brush* brush)
    {
        return SetStatus(DllExports::GdipSetPenBrushFill(nativePen, 
                                       brush->nativeBrush));
    }

    Status GetColor(OUT Color* color) const
    {
        if (color == NULL) 
        {
            return SetStatus(InvalidParameter);
        }
        
        PenType type = GetPenType();

        if (type != PenTypeSolidColor) 
        {
            return WrongState;
        }
        
        ARGB argb;
        
        SetStatus(DllExports::GdipGetPenColor(nativePen,
                                              &argb));
        if (lastResult == Ok)
        {
            color->SetValue(argb);
        }
        
        return lastResult;
    }

    Brush* GetBrush() const
    {
       PenType type = GetPenType();

       Brush* brush = NULL;

       switch(type)
       {
       case PenTypeSolidColor:
           brush = new SolidBrush();
           break;

       case PenTypeHatchFill:
           brush = new HatchBrush();
           break;

       case PenTypeTextureFill:
           brush = new TextureBrush();
           break;

       case PenTypePathGradient:
           brush = new Brush();
           break;

       case PenTypeLinearGradient:
           brush = new LinearGradientBrush();
           break;

       default:
           break;
       }

       if(brush)
       {
           GpBrush* nativeBrush;

           SetStatus(DllExports::GdipGetPenBrushFill(nativePen, &nativeBrush));
           brush->SetNativeBrush(nativeBrush);
       }

       return brush;
    }

    DashStyle GetDashStyle() const
    {
        DashStyle dashStyle;

        SetStatus(DllExports::GdipGetPenDashStyle(nativePen, &dashStyle));

        return dashStyle;
    }

    Status SetDashStyle(IN DashStyle dashStyle)
    {
        return SetStatus(DllExports::GdipSetPenDashStyle(nativePen, dashStyle));
    }

    REAL GetDashOffset() const
    {
        REAL dashOffset;

        SetStatus(DllExports::GdipGetPenDashOffset(nativePen, &dashOffset));

        return dashOffset;
    }

    Status SetDashOffset(IN REAL dashOffset)
    {
        return SetStatus(DllExports::GdipSetPenDashOffset(nativePen, dashOffset));
    }
    
    Status SetDashPattern(IN const REAL* dashArray, IN INT count)
    {
        return SetStatus(DllExports::GdipSetPenDashArray(nativePen, dashArray, 
                                                    count));
    }
    
    INT GetDashPatternCount() const
    {
        INT count = 0;
        
        SetStatus(DllExports::GdipGetPenDashCount(nativePen, &count));
        
        return count;
    }

    Status GetDashPattern(OUT REAL* dashArray, 
                          IN INT count) const
    {
        if (dashArray == NULL || count <= 0)
            return SetStatus(InvalidParameter); 
        
        return SetStatus(DllExports::GdipGetPenDashArray(nativePen, 
                                                         dashArray, 
                                                         count));
    }

    Status SetCompoundArray(IN const REAL* compoundArray,
                            IN INT count)
    {
        return SetStatus(DllExports::GdipSetPenCompoundArray(nativePen, compoundArray, 
                                                    count));
    }

    INT GetCompoundArrayCount() const
    {
        INT count = 0;
        
        SetStatus(DllExports::GdipGetPenCompoundCount(nativePen, &count));
        
        return count;
    }

    Status GetCompoundArray(OUT REAL* compoundArray, 
                            IN INT count) const
    {
        if (compoundArray == NULL || count <= 0)
            return SetStatus(InvalidParameter); 
        
        return SetStatus(DllExports::GdipGetPenCompoundArray(nativePen, 
                                                             compoundArray, 
                                                             count));
    }

    Status GetLastStatus() const
    {
        Status lastStatus = lastResult;
        lastResult = Ok;

        return lastStatus;
    }

protected:

#ifdef DCR_USE_NEW_250932

private:
    Pen(const Pen &);
    Pen& operator=(const Pen &);
protected:

#else

    Pen(const Pen& pen)
    {
        pen;
        SetStatus(NotImplemented);
        SetNativePen(NULL);
    }

    Pen& operator=(const Pen& pen)
    {
        pen;
        SetStatus(NotImplemented);
        return *this;
    }

#endif

    Pen(GpPen* nativePen, Status status)
    {
        lastResult = status;
        SetNativePen(nativePen);
    }

    VOID SetNativePen(GpPen* nativePen)
    {
        this->nativePen = nativePen;
    }
    
    Status SetStatus(Status status) const
    {
        if (status != Ok)
            return (lastResult = status);
        else 
            return status;
    }

protected:
    GpPen* nativePen;
    mutable Status lastResult;
};

#endif

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

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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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