group.h

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// $Id: group.h 751 2006-03-31 15:43:49Z alex $
/* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
================================XARAHEADERSTART===========================
 
               Xara LX, a vector drawing and manipulation program.
                    Copyright (C) 1993-2006 Xara Group Ltd.
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              respective authors. See AUTHORS file for details.

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----------------------------------

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=================================XARAHEADEREND============================
 */
// Group and OpEditGroup definitions

#ifndef INC_GROUP
#define INC_GROUP

#include "ink.h"
#include "nodecomp.h"


class RenderRegion;
class String_32;
class NodeRect; 
class BecomeA;

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

>   class NodeGroup: public NodeCompound

    Author:     Simon_Maneggio (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/9/93
    Purpose:    Group Node

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

class NodeGroup: public NodeCompound
{
public: 
    
    CC_DECLARE_DYNAMIC( NodeGroup )    
    
    NodeGroup(); 
    
    NodeGroup(Node* ContextNode,  
              AttachNodeDirection Direction,    
              BOOL Locked=FALSE, 
              BOOL Mangled=FALSE,  
              BOOL Marked=FALSE, 
              BOOL Selected=FALSE    
             ); 
             
    // virtual ID fn for a group node.
    virtual BOOL IsAGroup() const { return TRUE; }

    // virtual Functions to deal with bounding boxes
    virtual DocRect GetBoundingRect(BOOL DontUseAttrs=FALSE, BOOL HitTest=FALSE);
    virtual DocRect GetBlobBoundingRect();
    virtual DocRect GetEorDragBoundingRect();
    virtual void Transform(TransformBase&);

    // Virtual rendering functions
//  virtual void Render(RenderRegion* pRRegion);
    virtual void PreExportRender( RenderRegion* pRender ); 
    virtual BOOL ExportRender( RenderRegion* pRender ); 
    virtual SubtreeRenderState RenderSubtree(RenderRegion* pRender, Node** ppNextNode = NULL, BOOL bClip = TRUE);
    virtual void RenderAfterSubtree(RenderRegion* pRender);

    // Selection Functions
    virtual void RenderObjectBlobs(RenderRegion* pRender);
    virtual void RenderTinyBlobs(RenderRegion* pRender);

    // Other virtual functions
    virtual String Describe(BOOL Plural, BOOL Verbose); 
    virtual Node* SimpleCopy();
    void CopyNodeContents(NodeGroup* NodeCopy);
    virtual void PolyCopyNodeContents(NodeRenderable* pNodeCopy);
    virtual UINT32 GetNodeSize() const;             // Returns size of node in bytes

    // Fuctions that allows ops and other nodes to inform this node of events on it's children
    virtual ChangeCode OnChildChange(ObjChangeParam* pParam);

    // Functions to deal with messages
    virtual BOOL OnClick( DocCoord, ClickType, ClickModifiers, Spread* );
 
    // Version 2 file format functions
    virtual BOOL WritePreChildrenWeb(BaseCamelotFilter* pFilter);
    virtual BOOL WritePreChildrenNative(BaseCamelotFilter* pFilter);
    virtual BOOL WriteBoundsRecord(BaseCamelotFilter* pFilter);
    virtual BOOL WillWriteBounds(BaseCamelotFilter* pFilter);

    // Progressive rendering & the new file format
    virtual BOOL AreYouSafeToRender();

    // Effect Attribute functions
    virtual BOOL RenderTight(RenderRegion* pRender);
    virtual BOOL CaptureTight(RenderRegion* pRender);
    virtual double GetTightGroupPixelsPerInch(RenderRegion* pRender=NULL) const;
    virtual double GetTightGroupPixelWidth(RenderRegion* pRender=NULL) const {return 72000.0/GetTightGroupPixelsPerInch(pRender);}
    virtual void TransformTight(TransformBase& Trans, double dTestPixelWidth);

//  virtual BOOL IsValidEffectAttr(CCRuntimeClass* pAttrClass) const;
    virtual BOOL IsValidEffectAttr(NodeAttribute* pAttr) const;
    virtual BOOL GroupCanTransformCached(TransformBase& Trans) const {return TRUE;}

protected:
//  BOOL CopyEffectAttrsFrom(NodeGroup* pSrcNode);
};

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

>   class NodeListItemWithDocPtr : public NodeListItem

    Author:     Chris_Snook (Xara Group Ltd) <camelotdev@xara.com>
    Created:    10/7/2000
    Purpose:    This is used to allows blends of compounds to manage memory correctly.
                The class stores a pointer to the owning document - so that when the
                document dies, we only kill nodes associated with that document.
    SeeAlso:    Range::MakeListOfNodes

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

class NodeListItemWithDocPtr : public NodeListItem
{
public:
    CC_DECLARE_DYNAMIC( NodeListItemWithDocPtr )
    NodeListItemWithDocPtr();                   // will contain a NULL pointer
    NodeListItemWithDocPtr(Node* WhichNode);    // initialise pNode to be WhichNode
    ~NodeListItemWithDocPtr() {}                // Nothing to destruct
    
    Node* pNode;                    // pointer to a node
    Document* pOwner;               // ptr to the owning doc
    BOOL isForPrinting;             // was the node generated for use in printing?
};



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

>   class OpEditGroup : public SelOperation

    Author:     Simon_Maneggio (Xara Group Ltd) <camelotdev@xara.com>
    Created:    28/09/94
    Purpose:    This operation handles the resizing of a group. It is usually
                started when the Group detects a drag on one of its selected blobs.

********************************************************************************************/
#if 0
class OpEditGroup : public SelOperation
{
CC_DECLARE_DYNCREATE(OpEditGroup);

public:
    // Construction/Destruction
    OpEditGroup();

    // The all important Do functions
    //void DoDrag(DocCoord Anchor, Spread*, NodeRect *pRect, INT32 FixedCorner);
    void DoWithParam(OpDescriptor* OpDesc, OpParam* pOpParam); 

    // Virtual functions needed for the dragging operations to work
    virtual void DragPointerMove(DocCoord PointerPos, ClickModifiers ClickMods, Spread*, BOOL bSolidDrag);
    virtual void DragFinished(DocCoord PointerPos, ClickModifiers ClickMods, Spread*, BOOL Success, BOOL bSolidDrag);

    // Some Render functions to will draw the EORed group
    virtual void RenderDragBlobs(DocRect, Spread*, BOOL bSolidDrag);

    // These functions required for the OpDescriptor class
    static BOOL Init();
    static OpState GetState(String_256* Description, OpDescriptor*);

private:
    // Function to deal with all the undo stuff
    BOOL CompleteOperation();

    // Function to calculate the position of the rectangle after one of the corners moves
    void RebuildParallelogram(DocCoord PointerPos);
    DocRect GetDragBlobRect();

// Vars
protected:
    // Information we need to draw the EORed rectangle
    DocCoord  Parallel[4];          // The coords of the parallelogram
    INT32     FixedCorner;          // The corner of the rectangle that is not moving

    // Infomation about what we are editing
    NodeRect*       OldRect;

    BOOL            UseRect;
    NodeRect*       RectPath;
    Spread*         StartSpread;

    // Mouse Positions
    DocCoord        StartPoint;
    DocCoord        LastMousePosition;
};
#endif
 
#endif

---