ngdrag.h

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// $Id: ngdrag.h 1282 2006-06-09 09:46:49Z alex $
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 */
/*
    $Header: /Camelot/kernel/ngdrag.h 3     15/10/99 13:15 Justinf $
    Attribute gallery mouse dragging operations
*/

#ifndef NGDRAG_H
#define NGDRAG_H

#include "sgdrag.h"
#include "dragbmp.h"
//#include "dragtrgt.h" - in camtypes.h [AUTOMATICALLY REMOVED]

class SGNameItem;
class DragTarget;
class ViewDragTarget;


/********************************************************************************************
>   class CCAPI SGNameDrag : public BitmapDragInformation

    Author:     Justin_Flude (Xara Group Ltd) <camelotdev@xara.com>
    Created:    10/7/99
    Purpose:    A Wix ObjectName attribute drag, which was started from the Name gallery
    SeeAlso:    BitmapDragInformation           
********************************************************************************************/

class CCAPI SGNameDrag : public BitmapDragInformation
{ 
public:
    // Creation & destruction.
    SGNameDrag();
    SGNameDrag(SGNameItem* pSourceItem, SGMouseInfo* pMouseInfo,
                        SGMiscInfo* pMiscInfo);
    virtual ~SGNameDrag();

    // Click handling and user feedback.
    virtual void OnClick(INT32 nFlags, POINT ptClick);
    virtual UINT32 GetCursorID(DragTarget* pDragTarget);
    virtual BOOL GetStatusLineText(String_256* pText, DragTarget* pDragTarget);

    // Called when the drag ends over a view onto a document.
    virtual BOOL CanDropOnPage();
    virtual BOOL OnPageDrop(ViewDragTarget*);

    // Handlers for bitmap rendering during a drag.
    virtual INT32 GetDragTransparency();
    virtual KernelBitmap* GetSolidDragMask();
    virtual BOOL OnDrawSolidDrag(wxPoint ptOrigin, wxDC* pDC);
    
    // Returns a pointer to the Name Gallery display item being dragged.
    SGNameItem* GetDraggedNameAttr();

protected:
    // This returns a rendered image of m_pSourceItem into a bitmap of the given depth.
    virtual KernelBitmap* MakeImage(UINT32 nDepth = 0);

    SGNameItem* m_pSourceItem;      // item drag originated with
    SGMouseInfo m_MouseInfo;        // current state of the mouse
    SGMiscInfo  m_MiscInfo;         // current state of other stuff

private:
    CC_DECLARE_DYNCREATE(SGNameDrag);
};



/*********************************************************************************************
>   class CCAPI SGNameDragTarget : public SGListDragTarget

    Author:     Justin_Flude (Xara Group Ltd) <camelotdev@xara.com>
    Created:    10/7/99
    Purpose:    An instantiation of this class is created by each entity which wishes to 
                provide a 'destination' to which the mouse can go to complete a drag.
                This particular target is used for handling drags of NameGalllery items
                within their displayed list. It automatically handles drags with draginfo
                derived from BitmapDragInformation.
    Notes:      Drag targets are destroyed automatically when a drag finishes by the drag
                manager with which they were registered.
                To remove a drag target at any time, destroy it - it automatically deregisters
                and cleans up.          
    SeeAlso:    SGListDragTarget; DragManagerOp::StartDrag; DragInformation; DragTarget;
                SGBitmapDragTarget::ProcessEvent
*********************************************************************************************/

class CCAPI SGNameDragTarget : public SGListDragTarget
{
public:
    SGNameDragTarget(CGadgetID idGadget = 0);
protected:
    virtual BOOL ProcessEvent(DragEventType nEvent, DragInformation* pDragInfo,
                              OilCoord* pMousePos, KeyPress* pKeyPress);
private:
    CC_DECLARE_DYNAMIC(SGNameDragTarget);
};

#endif  /* !NGDRAG_H */

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