sgldrag.h

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// $Id: sgldrag.h 1250 2006-06-05 12:06:28Z alex $
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 */
// sgldrag.h - Line gallery item dragging

#ifndef INC_SGLDRAG
#define INC_SGLDRAG

#include "dragbmp.h"
#include "sgdrag.h"
#include "sgline.h"

class Bitmap;
class KernelBitmap;

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

>   class GalleryLineDragInfo : public BitmapDragInformation

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    10/4/95
    Purpose:    A Line attribute drag, which was started from the line gallery
    SeeAlso:    BitmapDragInformation
                
********************************************************************************************/

class GalleryLineDragInfo : public BitmapDragInformation
{ 
    CC_DECLARE_DYNCREATE(GalleryLineDragInfo)
 
public:
    GalleryLineDragInfo();
    GalleryLineDragInfo(    LineAttrItem *pSourceItem,
                            SGMouseInfo *pMouseInfo, SGMiscInfo *pMiscInfo,
                            BOOL IsAdjust = FALSE);

    ~GalleryLineDragInfo();

    virtual void OnClick(INT32 Flags, POINT Point);

    virtual UINT32 GetCursorID(DragTarget* pDragTarget);
    virtual BOOL GetStatusLineText(String_256 * TheText, DragTarget* pDragTarget);

    virtual BOOL CanDropOnPage() { return TRUE; }
    virtual BOOL OnPageDrop(ViewDragTarget*);

    virtual INT32 GetDragTransparency();
    virtual KernelBitmap* GetSolidDragMask();

    LineAttrItem*   GetDraggedLineAttr()    { return(SourceItem); }

protected:
    BOOL DropStartOrEndArrow(Path*, DocCoord, BOOL*);
    NodeAttribute* MakeStartOrEndArrow(NodeAttribute*, BOOL);

protected:
    LineAttrItem*   SourceItem;
    SGMouseInfo             MouseInfo;
    SGMiscInfo              MiscInfo;

    NodeAttribute* pAttr;
};

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

>   class   SGLineDragTarget : public SGListDragTarget

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    10/4/95

    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 BitmapSGalllery items
                within their displayed list. It automatically handles drags with draginfo
                derived from BitmapDragInformation.

    Notes:      Drag targets are destructed automatically when a drag finishes by the drag
                manager with which they were registered.

                To remove a drag target at any time, destruct it - it automatically deregisters
                and cleans up.
                
    SeeAlso:    DragManagerOp::StartDrag; DragInformation; DragTarget;
                SGBitmapDragTarget::ProcessEvent

    Documentation:  Docs\Specs\DragMan.doc; Docs\HowToUse\SGallery.doc

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

class SGLineDragTarget : public SGListDragTarget
{
friend class DragManagerOp;
    
CC_DECLARE_DYNAMIC(SGLineDragTarget)

public: // Public interface
    SGLineDragTarget(DialogOp *TheDialog, CGadgetID TheGadget = NULL);

protected:
        // Process a drag-related event
    virtual BOOL ProcessEvent(DragEventType Event,
                                DragInformation *pDragInfo,
                                OilCoord *pMousePos, KeyPress* pKeyPress);
};

#endif

---