brushref.h

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// $Id: brushref.h 1282 2006-06-09 09:46:49Z alex $
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 */

// The brushref class

#ifndef BRUSHREF
#define BRUSHREF

#include "nodebldr.h"

//#include "ink.h" - in camtypes.h [AUTOMATICALLY REMOVED]

class BitmapFillAttribute;

/***********************************************************************************************

>   class BlendPathOffset

    Author:     Diccon_Yamanaka (Xara Group Ltd) <camelotdev@xara.com>
    Created:    18/10/99
    Purpose:    Stores the translation of the blendpath to the centre of its parent object.
***********************************************************************************************/

class BlendPathOffset
{
public:
    BlendPathOffset() {m_XOffset = 0; m_YOffset = 0; m_Angle = 0; m_Magnitude = 0;}
    BlendPathOffset(MILLIPOINT X, MILLIPOINT Y) {m_XOffset = X; m_YOffset = Y; 
                                                CalculateAngleAndMagnitude();}

    void CalculateAngleAndMagnitude();

    // get the polar version
    void GetAngleAndMagnitude(double* pAngle, MILLIPOINT* pMagnitude);
    
    // work out what the offsets would be if it were rotated
    void RotateByAngle(double Angle, MILLIPOINT* pXoffset, MILLIPOINT* pYOffset);

public:  //data
    MILLIPOINT m_XOffset;
    MILLIPOINT m_YOffset;

protected: 
    // the polar representation
    double m_Angle;
    MILLIPOINT m_Magnitude;
};

/***********************************************************************************************

>   class BrushRef : public BlendRef

    Author:     Diccon_Yamanaka (Xara Group Ltd) <camelotdev@xara.com>
    Created:    7/12/99
    Purpose:    'wrapper' for the blendref class for use with the brush.  Contains the information
                that the nodebrushmaker needs to draw the brush objects

***********************************************************************************************/

class BrushRef : public BlendRef
{
    CC_DECLARE_MEMDUMP(BrushRef);

public:
    typedef std::list<BlendPathOffset>  list;
    typedef list::iterator              iterator;

public:
    BrushRef();
    ~BrushRef();

    BOOL Initialise(NodeRenderableInk* pInitNode);
    BlendPathOffset* GetFirstOffset( iterator *pHeadPosition );
    BlendPathOffset* GetNextOffset( iterator *pPosition );
    iterator GetEndPosition() { return m_OffsetList.end(); }
    
    DocRect GetBoundingRect();
    void DeleteBitmapFills();  // deletes bitmap fills, use only when camelot is closing
    void DeleteAttributesAndPath(); 
    void FreeAttributes();
    void TranslateTo(DocCoord Target);

    void TransformAttributes(TransformBase& Trans);

    // get the blendpaths to copy their data for rendering
    BOOL MakeCopiesForRendering();
    BOOL UpdateCopies();
    void DeleteRenderCopies();

    // returns the first and subsequent copies of the blendpaths
    Path* GetFirstCopyPath();
    Path* GetNextCopyPath();

    // returns the attribute map pertaining to the current blendpath
    CCAttrMap* GetCurrentAttributeCopy();

protected: //helper functions   
    BOOL SetBitmapFillFlags(); // tells any bitmap fills not to delete themselves normally as we will do it
    
protected:
    NodeRenderableInk*  m_pNode;
    List                m_BlendPathList;
    UINT32              m_NumBlendPaths;
    CMapPtrToPtr*       m_pBlendPathAttrMap;
    DocRect             m_CachedRect;
    // the list of transformations from the centre of the blendpath to the centre of 
    // the inknode.  Only really used when making brushes from groups.
    list                m_OffsetList;

    // our current blendpath for rendering
    BlendPath*          m_pCurrentBlendPath;
};


/***********************************************************************************************

>   class BrushRefBlender : public CC_CLASS_MEMDUMP

    Author:     Diccon_Yamanaka (Xara Group Ltd) <camelotdev@xara.com>
    Created:    7/12/99
    Purpose:    An instance of this class is designed to take two BrushRef objects and blend together
                their paths and attributes, churning out a BlendedBrushRef object at the end.
                It essentially rips off a lot of what the NodeBlender does, except that instead of
                rendering anything or existing in the tree it just produces a blended object.

***********************************************************************************************/

class BrushRefBlender : public CC_CLASS_MEMDUMP
{
    CC_DECLARE_MEMDUMP(BrushRefBlender);
public:
    BrushRefBlender();
    ~BrushRefBlender();

    void SetBrushRef(BrushRef* pBrushRef, BOOL First);
    BrushRef* Blend(BrushRef* pStartBrushRef, BrushRef* pOther, double Ratio);

protected: //helper functions

    BOOL BlendPaths(BlendPath* pBlendPathStart,BlendPath* pBlendPathEnd,double BlendRatio);
    BOOL BlendAttributes(BlendPath* pBlendPathStart, BlendPath* pBlendPathEnd,
                        CCAttrMap* pBlendedAttribMap,double BlendRatio);

    BOOL        ReallocTempBuffers(UINT32 Size);
    void        DeallocTempBuffers();

    // Access funcs for the path arrays
    DocCoord*   GetCoordArray(UINT32 MinSize);
    PathVerb*   GetVerbArray(UINT32 MinSize);
    PathFlags*  GetFlagArray(UINT32 MinSize);
    UINT32*         GetGBlendBuff(UINT32 MinSize);


protected: //data
        // the two brushrefs to be blended
    BrushRef* m_pStartBrushRef;  
    BrushRef* m_pEndBrushRef;

    // The following set of vars deal with arrays that are set up by the PreBlend() routine
    // Also, these arrays can also change by calls to the access funcs GetCoordArray(), GetVerbArray() and GetFlagArray()
    UINT32      m_TempArraySize;
    DocCoord*   m_pTempCoords;
    PathVerb*   m_pTempVerbs;
    PathFlags*  m_pTempFlags;
    UINT32      m_GBlendBuffSize;
    UINT32*     m_pGBlendBuff;
    UINT32      m_ArrayLength;
    
};  
#endif

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