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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:
*
*   GdiplusRegion.h
*
* Abstract:
*
*   Region API related declarations
*
\**************************************************************************/

#ifndef _GDIPLUSREGION_H
#define _GDIPLUSREGION_H

/**
 * Construct a new region object
 */

inline 
Region::Region()
{
    GpRegion *region = NULL;

    lastResult = DllExports::GdipCreateRegion(&region);

    SetNativeRegion(region);
}

inline 
Region::Region(IN const RectF& rect)
{
    GpRegion *region = NULL;

    lastResult = DllExports::GdipCreateRegionRect(&rect, &region);

    SetNativeRegion(region);
}

inline 
Region::Region(IN const Rect& rect)
{
    GpRegion *region = NULL;

    lastResult = DllExports::GdipCreateRegionRectI(&rect, &region);

    SetNativeRegion(region);
}

inline 
Region::Region(IN const GraphicsPath* path)
{
    GpRegion *region = NULL;

    lastResult = DllExports::GdipCreateRegionPath(path->nativePath, &region);

    SetNativeRegion(region);
}

inline 
Region::Region(IN const BYTE* regionData, IN INT size)
{
    GpRegion *region = NULL;

    lastResult = DllExports::GdipCreateRegionRgnData(regionData, size, &region);

    SetNativeRegion(region);
}

inline 
Region::Region(IN HRGN hRgn)
{
    GpRegion *region = NULL;

    lastResult = DllExports::GdipCreateRegionHrgn(hRgn, &region);

    SetNativeRegion(region);
}

inline 
Region* Region::FromHRGN(IN HRGN hRgn)
{
    GpRegion *region = NULL;

    if (DllExports::GdipCreateRegionHrgn(hRgn, &region) == Ok)
    {
        Region* newRegion = new Region(region);

        if (newRegion == NULL) 
        {
            DllExports::GdipDeleteRegion(region);
        }

        return newRegion;
    }
    else
        return NULL;
}

inline 
Region::~Region()
{
    DllExports::GdipDeleteRegion(nativeRegion);
}

/**
 * Make a copy of the region object
 */
inline Region* 
Region::Clone() const
{
    GpRegion *region = NULL;

    SetStatus(DllExports::GdipCloneRegion(nativeRegion, &region));

    return new Region(region);
}

inline Status 
Region::MakeInfinite()
{
    return SetStatus(DllExports::GdipSetInfinite(nativeRegion));
}

inline Status 
Region::MakeEmpty()
{
    return SetStatus(DllExports::GdipSetEmpty(nativeRegion));
}

/**
 * Region operations
 */
inline Status 
Region::Intersect(IN const RectF& rect)
{
    return SetStatus(DllExports::GdipCombineRegionRect(nativeRegion, &rect, CombineModeIntersect));
}

inline Status 
Region::Intersect(IN const Rect& rect)
{
    return SetStatus(DllExports::GdipCombineRegionRectI(nativeRegion, &rect, CombineModeIntersect));
}

inline Status 
Region::Intersect(IN const GraphicsPath* path)
{
    return SetStatus(DllExports::GdipCombineRegionPath(nativeRegion, path->nativePath, CombineModeIntersect));
}

inline Status 
Region::Intersect(IN const Region* region)
{
    return SetStatus(DllExports::GdipCombineRegionRegion(nativeRegion, region->nativeRegion, CombineModeIntersect));
}

inline Status 
Region::Union(IN const RectF& rect)
{
    return SetStatus(DllExports::GdipCombineRegionRect(nativeRegion, &rect, CombineModeUnion));
}

inline Status 
Region::Union(IN const Rect& rect)
{
    return SetStatus(DllExports::GdipCombineRegionRectI(nativeRegion, &rect, CombineModeUnion));
}

inline Status 
Region::Union(IN const GraphicsPath* path)
{
    return SetStatus(DllExports::GdipCombineRegionPath(nativeRegion, path->nativePath, CombineModeUnion));
}

inline Status 
Region::Union(IN const Region* region)
{
    return SetStatus(DllExports::GdipCombineRegionRegion(nativeRegion, region->nativeRegion, CombineModeUnion));
}

inline Status 
Region::Xor(IN const RectF& rect)
{
    return SetStatus(DllExports::GdipCombineRegionRect(nativeRegion, &rect, CombineModeXor));
}

inline Status 
Region::Xor(IN const Rect& rect)
{
    return SetStatus(DllExports::GdipCombineRegionRectI(nativeRegion, &rect, CombineModeXor));
}

inline Status 
Region::Xor(IN const GraphicsPath* path)
{
    return SetStatus(DllExports::GdipCombineRegionPath(nativeRegion, path->nativePath, CombineModeXor));
}

inline Status 
Region::Xor(IN const Region* region)
{
    return SetStatus(DllExports::GdipCombineRegionRegion(nativeRegion, region->nativeRegion, CombineModeXor));
}

inline Status 
Region::Exclude(IN const RectF& rect)
{
    return SetStatus(DllExports::GdipCombineRegionRect(nativeRegion, &rect, CombineModeExclude));
}

inline Status 
Region::Exclude(IN const Rect& rect)
{
     return SetStatus(DllExports::GdipCombineRegionRectI(nativeRegion, &rect, CombineModeExclude));
}

inline Status 
Region::Exclude(IN const GraphicsPath* path)
{
    return SetStatus(DllExports::GdipCombineRegionPath(nativeRegion, path->nativePath, CombineModeExclude));
}

inline Status
Region::Exclude(IN const Region* region)
{
    return SetStatus(DllExports::GdipCombineRegionRegion(nativeRegion,
                                               region->nativeRegion, CombineModeExclude));
}

inline Status 
Region::Complement(IN const RectF& rect)
{
    return SetStatus(DllExports::GdipCombineRegionRect(nativeRegion, &rect, CombineModeComplement));
}

inline Status 
Region::Complement(IN const Rect& rect)
{
    return SetStatus(DllExports::GdipCombineRegionRectI(nativeRegion, &rect, CombineModeComplement));
}

inline Status 
Region::Complement(IN const GraphicsPath* path)
{
    return SetStatus(DllExports::GdipCombineRegionPath(nativeRegion,
                                                path->nativePath, CombineModeComplement));
}

inline Status 
Region::Complement(IN const Region* region)
{
    return SetStatus(DllExports::GdipCombineRegionRegion(nativeRegion,
                                                  region->nativeRegion, CombineModeComplement));
}

/**
 * Transform operations
 */
inline Status 
Region::Translate(IN REAL dx, 
                  IN REAL dy)
{
    return SetStatus(DllExports::GdipTranslateRegion(nativeRegion, dx, dy));
}

inline Status 
Region::Translate(IN INT dx, 
                  IN INT dy)
{
    return SetStatus(DllExports::GdipTranslateRegionI(nativeRegion, dx, dy));
}

inline Status 
Region::Transform(IN const Matrix* matrix)
{
    return SetStatus(DllExports::GdipTransformRegion(nativeRegion, matrix->nativeMatrix));
}

/**
 * Get region attributes
 */
inline Status 
Region::GetBounds(OUT RectF* rect,
                  IN const Graphics* g) const
{
    return SetStatus(DllExports::GdipGetRegionBounds(nativeRegion,
                                                g->nativeGraphics,
                                                rect));
}

inline Status 
Region::GetBounds(OUT Rect* rect,
                  IN const Graphics* g) const
{
    return SetStatus(DllExports::GdipGetRegionBoundsI(nativeRegion,
                                                g->nativeGraphics,
                                                rect));
}

inline HRGN
Region::GetHRGN(IN const Graphics* g) const
{
    HRGN hrgn;

    SetStatus(DllExports::GdipGetRegionHRgn(nativeRegion,
                                            g->nativeGraphics,
                                            &hrgn));

    return hrgn;
}

inline BOOL 
Region::IsEmpty(IN const Graphics *g) const
{
    BOOL booln = FALSE;
   
    SetStatus(DllExports::GdipIsEmptyRegion(nativeRegion,
                                            g->nativeGraphics,
                                            &booln));

    return booln;
}

inline BOOL 
Region::IsInfinite(IN const Graphics *g) const
{
    BOOL booln = FALSE;

    SetStatus(DllExports::GdipIsInfiniteRegion(nativeRegion,
                                                 g->nativeGraphics,
                                                 &booln));

    return booln;
}

inline BOOL 
Region::Equals(IN const Region* region, 
               IN const Graphics* g) const
{
    BOOL booln = FALSE;

    SetStatus(DllExports::GdipIsEqualRegion(nativeRegion,
                                              region->nativeRegion,
                                              g->nativeGraphics,
                                              &booln));
    return booln;
}

// Get the size of the buffer needed for the GetData method
inline UINT 
Region::GetDataSize() const
{
    UINT     bufferSize = 0;
    
    SetStatus(DllExports::GdipGetRegionDataSize(nativeRegion, &bufferSize));
    
    return bufferSize;
}

// buffer     - where to put the data
// bufferSize - how big the buffer is (should be at least as big as GetDataSize())
// sizeFilled - if not NULL, this is an OUT param that says how many bytes
//              of data were written to the buffer.
inline Status 
Region::GetData(OUT BYTE* buffer, 
                IN UINT bufferSize, 
                OUT UINT* sizeFilled) const
{
    return SetStatus(DllExports::GdipGetRegionData(nativeRegion, buffer, bufferSize, sizeFilled));
}

/**
 * Hit testing operations
 */
inline BOOL 
Region::IsVisible(IN const PointF& point, 
                  IN const Graphics* g) const
{
    BOOL booln = FALSE;

    SetStatus(DllExports::GdipIsVisibleRegionPoint(nativeRegion,
                                     point.X, point.Y, 
                                     (g == NULL) ? NULL : g->nativeGraphics,
                                     &booln));
    return booln;
}

inline BOOL 
Region::IsVisible(IN const RectF& rect, 
                  IN const Graphics* g) const
{
    BOOL booln = FALSE;

    SetStatus(DllExports::GdipIsVisibleRegionRect(nativeRegion, rect.X,
                                                    rect.Y, rect.Width,
                                                    rect.Height,
                                                    (g == NULL) ? NULL : g->nativeGraphics,
                                                    &booln));
    return booln;
}

inline BOOL 
Region::IsVisible(IN const Point& point, 
                  IN const Graphics* g) const
{
    BOOL booln = FALSE;


    SetStatus(DllExports::GdipIsVisibleRegionPointI(nativeRegion,
                                                   point.X,
                                                   point.Y,
                                                   (g == NULL) ? NULL : g->nativeGraphics,
                                                   &booln));
    return booln;
}

inline BOOL 
Region::IsVisible(IN const Rect& rect, 
                  IN const Graphics* g) const
{
    BOOL booln = FALSE;

    SetStatus(DllExports::GdipIsVisibleRegionRectI(nativeRegion,
                                                  rect.X,
                                                  rect.Y,
                                                  rect.Width,
                                                  rect.Height,
                                                  (g == NULL) ? NULL : g->nativeGraphics,
                                                  &booln));
    return booln;
}

inline UINT 
Region::GetRegionScansCount(IN const Matrix* matrix) const
{
    UINT count = 0;

    SetStatus(DllExports::GdipGetRegionScansCount(nativeRegion,
                                                  &count,
                                                  matrix->nativeMatrix));
    return count;
}

inline Status 
Region::GetRegionScans(
    IN const Matrix* matrix,
    OUT RectF* rects,
    IN OUT INT* count) const
{
    return SetStatus(DllExports::GdipGetRegionScans(nativeRegion,
                                          rects,
                                          count,
                                          matrix->nativeMatrix));
}

// If rects is NULL, return the count of rects in the region.
// Otherwise, assume rects is big enough to hold all the region rects
// and fill them in and return the number of rects filled in.
// The rects are returned in the units specified by the matrix
// (which is typically a world-to-device transform).
// Note that the number of rects returned can vary, depending on the
// matrix that is used.
inline Status 
Region::GetRegionScans(
    IN const Matrix* matrix,
    OUT Rect* rects,       // NULL to just get the count
    IN OUT INT* count) const
{
    return SetStatus(DllExports::GdipGetRegionScansI(nativeRegion,
                                          rects,
                                          count,
                                          matrix->nativeMatrix));
}

// protected method
inline Region::Region(GpRegion* nativeRegion)
{
    SetNativeRegion(nativeRegion);
}

// protected method
inline VOID Region::SetNativeRegion(GpRegion* nativeRegion)
{
    this->nativeRegion = nativeRegion;
}

inline Status Region::GetLastStatus() const
{
    Status lastStatus = lastResult;
    lastResult = Ok;

    return lastStatus;
}

#endif // !_GDIPLUSREGION_H

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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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