selop.h

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// $Id: selop.h 1552 2006-07-26 13:43:02Z phil $
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 */
/*
 *  */


#ifndef INC_SELOP
#define INC_SELOP         

#include "undoop.h"


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

>   class SelOperation: public UndoableOperation

    Author:     Simon_Maneggio (Xara Group Ltd) <camelotdev@xara.com>
    Created:    15/2/94
    Purpose:    A SelOperation  
                
                  
    SeeAlso:    TransOperation

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

class CCAPI SelOperation:public UndoableOperation
{
    CC_DECLARE_DYNCREATE( SelOperation )   

public: 
    SelOperation(); 
    virtual ~SelOperation(); 
    BOOL DoStartSelOp(BOOL RenderEndSelStateBlobs,
                      BOOL RenderStartSelStateBlobs=TRUE,
                      BOOL UndoRenderEndSelStateBlobs=FALSE,
                      BOOL UndoRenderStartSelStateBlobs=FALSE
                     );

    virtual void End(); 

    // Karim 21/01/2000 - see UndoableOperation base implementation.
    virtual BOOL MayChangeNodeBounds() const { return TRUE; }

    virtual BOOL GetStarted() const { return m_bStartCalled; }

    // --------------------------------------------------------------------------------------
    // Phil 16/02/2005
    //
    // Functions for applying attributes to nodes
    // Previously in OpApplyAttribstoSelected
    // Moved here so that any op can apply attributes and have the correct actions added
    // to its own undo lists
    //
public:
    static BOOL  DoApply(SelOperation* pOp,
                         Node* CurrentNode,
                         NodeAttribute* Attrib, 
                         BOOL Mutate, 
                         BOOL InvalidateRegion = TRUE, 
                         BOOL KeepExistingCharacteristics = TRUE,
                         BOOL bOptimise = TRUE,
                         BOOL* AttribWasRequired = NULL,
                         BOOL* pbCanDiscardUndo = NULL
                         );
    static BOOL InvalidateNodeRegion(   SelOperation* pOp,
                                        NodeRenderableBounded* CurrentNode, 
                                        NodeAttribute* Attrib, 
                                        BOOL Mutate);
    static BOOL ReleaseCachedForAttrApply(NodeRenderableBounded* pNode, BOOL bEffectRootOnly);

    virtual BOOL DoAttributesSelected(List& AttribsToApply, UINT32 OpName, BOOL bPasteAttrs);
    virtual BOOL DoApplyAttribsToSelection(OpParam* pOpParam, BOOL bClearIfNoneApplied = FALSE);
    virtual BOOL DoApplyToSelection(List* Attribs, List* AttrGroupList, BOOL* pAttribWasRequired);
    virtual BOOL DoApply(Node* CurrentNode,
                         NodeAttribute* Attrib, 
                         BOOL Mutate, 
                         BOOL InvalidateRegion = TRUE, 
                         BOOL KeepExistingCharacteristics = TRUE,
                         BOOL* AttribWasRequired = NULL,
                         BOOL* pbCanDiscardUndo = NULL
                         );

protected:
    virtual BOOL ApplyAttributeToBrush(Node* pCurrentNode, NodeAttribute* pAttr);
    virtual BOOL ApplyLineWidthToBrush(AttrBrushType* pAttrBrush, NodeRenderableInk* pBrushedNode,
                                NodeAttribute* pAttr);
    virtual BOOL ApplyStrokeColourToBrush(AttrBrushType* pAttrBrush, NodeRenderableInk* pBrushedNode);
    virtual BOOL ApplyTransparencyToBrush(AttrBrushType* pAttrBrush, NodeRenderableInk* pBrushedNode);

    virtual BOOL ApplyBrushAttr(Node* pCurrentNode, AttrBrushType* pAttrBrush); 

private:
    BOOL DoEndSelOp();   // Called by End()
    // A pointer to a selection state object required by RestoreSelections actions. 
    // Created in DoStartSelectionOp()  
    SelectionState* SelState; 

    // Flag so that derived member funcs can determine whether StartSelOp has been called
    // on this op yet
    BOOL m_bStartCalled;

    // Used in the End() method to dermine if we should save the selection state at the end of 
    // the operation or not. 
    static BOOL RenderEndSelStateBlobs;
    static BOOL RenderStartSelStateBlobs; 
    static BOOL UndoRenderEndSelStateBlobs;
    static BOOL UndoRenderStartSelStateBlobs; 
 
};                            

#endif 
     

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