fillramp.h

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

#ifndef INC_FILLRAMP
#define INC_FILLRAMP

// This file holds classes concerned with fill ramps. 
// Currently colour ramps and transparancy ramps have been implemented fully.

//#include "list.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "doccolor.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "doccoord.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "fillattr.h" - in camtypes.h [AUTOMATICALLY REMOVED]

#define FILLRAMP_INDEXBASE 1024
#define FILLRAMP_ILLEGALINDEX (FILLRAMP_INDEXBASE-1)
#define ABSOLUTEINDEX(x) ((x)+FILLRAMP_INDEXBASE)
#define RELATIVEINDEX(x) ((x)-FILLRAMP_INDEXBASE)
#define ISA_RAMPINDEX(x) ((x)>=FILLRAMP_INDEXBASE)

class FillGeometryAttribute;
class RenderRegion;
class BaseCamelotFilter;
class CamelotFileRecord;

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

>   class RampItem : public ListItem

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    05/02/97
    Purpose:    Defines whats common to all ramp items, i.e. their position and selection
                state

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

class RampItem : public ListItem
{
    CC_DECLARE_DYNCREATE(RampItem);

    public:
        RampItem();
        RampItem(float pos);
        RampItem(const RampItem &other);

        void    SetPosition(float pos);
        void    SetSelState(BOOL selstate);
        
        float   GetPosition() const { return Position; }
        BOOL    GetSelState() const { return Selected; }
        BOOL    IsSelected()  const { return Selected; }

        virtual BOOL IsAColourRampItem() const { return (FALSE); }
        virtual BOOL IsATranspRampItem() const { return (FALSE); }

    private:
        void    ClampPosition();

    protected:
        float   Position;           // 0..1 specifies the position of this colour
        BOOL    Selected;           // whether this item is selected in the UI
};


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

>   class ColRampItem : public RampItem

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    05/02/97
    Purpose:    Defines a single entry in a colour ramp. 
                An entry is simply made up of a single doc colour definition.

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

class ColRampItem : public RampItem
{
    CC_DECLARE_DYNCREATE(ColRampItem);

    public:
        ColRampItem();
        ColRampItem(float pos, DocColour *pCol);
        ColRampItem(const ColRampItem &other);
        
        void        SetColour(DocColour *pCol);
        DocColour   GetColour() const   { return Colour; }
        DocColour*  GetColourAddr()     { return &Colour; }
        
        INT32           operator==(const ColRampItem& other) const;

        virtual BOOL IsAColourRampItem() const { return (TRUE); }

    private:
        DocColour   Colour;             // the actual colour.
};


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

>   class TranspRampItem : public RampItem

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    05/02/97
    Purpose:    Defines a single entry in a transparency ramp. 
                An entry is simply made up of a single long definition.

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

class TranspRampItem : public RampItem
{
    CC_DECLARE_DYNCREATE(TranspRampItem);

    public:
        TranspRampItem();
        TranspRampItem(float pos, UINT32 transp);
        TranspRampItem(const TranspRampItem &other);
        
        void    SetTransparency(UINT32 transp);
        UINT32  GetTransparency() const { return Transparency; }
        UINT32* GetTranspAddr()         { return &Transparency; }
        
        INT32       operator==(const TranspRampItem& other) const;

        virtual BOOL IsATranspRampItem() const { return (TRUE); }

    private:
        UINT32  Transparency;       // the actual transparency.
};



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

>   class FillRamp : public List

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    05/02/97
    Purpose:    The base class fill ramp. This class contains common functionality between
                colour and transparency ramps. Each ramp entry derived from RampItem will 
                contain a selection state and a (float) parameter value. The parameter value
                usually ranges between 0 and 1 and hence can be used to generate a coordinate
                from any given fill geometry.

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

class FillRamp : public List
{
    CC_DECLARE_DYNAMIC( FillRamp )

    public:
        void      GetSelectionState(BOOL *SelState) const;
                  // find the selection state for all blobs
                
        UINT32    CountSelBlobs() const;
                  // just how many selected blobs are there?

        INT32     GetSelectedIndex() const;
                  // find the index of the first selected blob

        BOOL      GetIndexRange(UINT32 *pFirst, UINT32 *pLast) const;
                  // find the index of the start and end blobs (hence the range)

        BOOL      IsSelected(UINT32 index) const;
                  // is a particular blob selected?

        void      DeselectAll() const;
                  // throw away any selected bits.

        FillControl     RotateSelRight (BOOL StartPointSelected, BOOL EndPointSelected, FillControl& OldSelectedBlob) const;
                        // rotate all selection states down the list (with carry)

        BOOL      RotateSelLeft(BOOL StartPointSelected, BOOL EndPointSelected, FillControl& OldSelectedBlob) const;
                  // rotate all selection states up the list (with carry)

        void      SetSelState(UINT32 index, INT32 state);
                  // set, unset or toggle the selection state of a blob

        UINT32    SetPosition(UINT32 index, float pos);
                  // give the item at 'index' a new position.

        UINT32    HitBlob(FillGeometryAttribute *pGeom, DocCoord& ClickPos) const;
                  // is the given click position inside a blob?

        DocCoord  GetGeometryCoord(FillGeometryAttribute *pGeom, UINT32 index) const;
                  // get the actual position of a blob on a given geometry

        void      RenderRampBlobs(FillGeometryAttribute *pGeom, RenderRegion *pRender, BOOL *pSelState=NULL) const;
                  // render all the blob positions to a render region

        void      RenderSelectedBlob (FillGeometryAttribute *pGeom, RenderRegion *pRender);
                  // render just the selected blob (so that we don't get blob redraw ficker)

        void      SortRamp();
                  // ensures that all positions in the ramp are in numerical order

        RampItem* GetValidIndexedItem(UINT32 index) const;
                  // find the i'th item in our blob list, do some error checking on index

        void      Blend (FillGeometryAttribute* pNewAttr, BlendAttrParam* pBlendParam, FillGeometryAttribute* pOtherFill, BOOL notInvert = FALSE);
                  // blend those fill ramps!

    protected:

        RampItem* GetIndexedItem(INT32 index) const;
                  // find the i'th item in our blob list
        
        UINT32    InsertNewItem(RampItem* pItem);
                  // place a new item somewhere in the list.

    private:
        RampItem* FindInsertPosition(float pos, INT32* pInsert, UINT32* index) const;
                  // return a list insertion point for this new item (helper function)

        UINT32    ShuffleItem(RampItem *pItem, UINT32 index);
                  // shuffle pItem around in the list after a position change

        // private support functions for FillRamp::Blend () ....
        
        void      DoOneToOneBlend (FillGeometryAttribute* pNewAttr, BlendAttrParam* pBlendParam, FillRamp* OtherRamp, BOOL notInvert);
        void      DoNoneToManyBlend (FillGeometryAttribute* pNewAttr, BlendAttrParam* pBlendParam, FillRamp* OtherRamp, BOOL notInvert);
        void      DoManyToNoneBlend (FillGeometryAttribute* pNewAttr, BlendAttrParam* pBlendParam, FillGeometryAttribute* pOtherFill, BOOL notInvert);
        void      DoManyToManyBlend (FillGeometryAttribute* pNewAttr, BlendAttrParam* pBlendParam, FillRamp* OtherRamp, BOOL notInvert);
};


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

>   class ColourRamp : public FillRamp

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    02/02/97
    Purpose:    This class holds a list of colour records, each of which describe a colour
                position in a colour ramp. The list contains the usual add/delete entry members
                and other suitable interfaces to allow colour ramps to be edited.
                The list is used inside GradFillAttribute to describe multicoloured fills.

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

class ColourRamp : public FillRamp
{
    CC_DECLARE_DYNAMIC( ColourRamp )

    public:
        virtual ~ColourRamp();

               ColRampItem* AddEntry(float pos, DocColour* pCol);
        inline ColRampItem* GetFirstCol() const;
        inline ColRampItem* GetLastCol() const;
        inline ColRampItem* GetNextCol(ColRampItem* pItem) const;
        inline ColRampItem* GetPrevCol(ColRampItem* pItem) const;
               ColourRamp&  operator=(const ColourRamp& other);
               DocColour*   GetFirstSelectedColour();
               DocColour*   EnumerateColourFields(UINT32 index);

               BOOL IsDifferentTo(ColourRamp *pRamp);

        INT32    operator==(const ColourRamp& other) const;
        void   DeleteAll();

        BOOL   SetItemColour(UINT32 index, DocColour* pCol);
        INT32   SetSelectedColours(DocColour *pCol);

        BOOL CopyComponentData(BaseDocument* SrcDoc, BaseDocument* NodesDoc);

        BOOL WriteColourDefinitions (BaseCamelotFilter* pFilter);

#ifdef _DEBUG
        // dump all fill ramp entries
        void Dump();
#else
        void Dump() { } ;
#endif

};


// inline function to return the 'correctly typed ' first entry.
ColRampItem* ColourRamp::GetFirstCol() const
{
    return (ColRampItem*)GetHead();
}

// inline function to return the 'correctly typed ' last entry.
ColRampItem* ColourRamp::GetLastCol() const
{
    return (ColRampItem*)GetTail();
}

// inline function to return the 'correctly typed ' next entry.
ColRampItem* ColourRamp::GetNextCol(ColRampItem* pItem) const
{
    return (ColRampItem*)GetNext(pItem);
}

// inline function to return the 'correctly typed ' previous entry.
ColRampItem* ColourRamp::GetPrevCol(ColRampItem* pItem) const
{
    return (ColRampItem*)GetPrev(pItem);
}





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

>   class TransparencyRamp : public FillRamp

    Author:     Mike_Kenny (Xara Group Ltd) <camelotdev@xara.com>
    Created:    02/02/97
    Purpose:    This class holds a list of transparency records, each of which describe a
                specific entry in the transparency ramp

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

class TransparencyRamp : public FillRamp
{
    CC_DECLARE_DYNAMIC( TransparencyRamp )

    public:
        virtual ~TransparencyRamp();

               TranspRampItem* AddEntry(float pos, UINT32 transp);
        inline TranspRampItem* GetFirstTransp() const;
        inline TranspRampItem* GetNextTransp(TranspRampItem* pItem) const;
               TransparencyRamp& operator=(const TransparencyRamp& other);

               BOOL IsDifferentTo(TransparencyRamp *pRamp);
               UINT32* GetFirstSelectedTransp();

        INT32    operator==(const TransparencyRamp& other) const;
        void   DeleteAll();
        
        BOOL   SetItemTransp(UINT32 index, UINT32 transp);
        INT32   SetSelectedTransp(UINT32 transp);
};


// inline function to return the 'correctly typed ' first entry
TranspRampItem* TransparencyRamp::GetFirstTransp() const
{
    return (TranspRampItem*)GetHead();
}

// inline function to return the 'correctly typed ' next entry
TranspRampItem* TransparencyRamp::GetNextTransp(TranspRampItem* pItem) const
{
    return (TranspRampItem*)GetNext(pItem);
}



#endif // INC_FILLRAMP

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