fsCDragDropComponent.h

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/********************************************************************
*
*       Created:        22/4/2014   14:16
*
*       File:           fsCDragDropComponent.h
*
*       Author:         Mick Waites
*       
*       Purpose:        Short lived sprite based entities which can be
*                               dragged around a scene and dropped.
*
*********************************************************************/
 
#ifndef fsCDragDropComponenthdr
#define fsCDragDropComponenthdr
 
#include <fsCore/src/fsCUniqueId.h>
 
#include "fsIGestureHandlingComponent.h"
 
class fsCLine;
struct fsPoint;
class fsCBrush;
 
// #define COLLISION_DEBUG_RENDERING
// #define COLLISION_DEBUG_MESSAGES
 
 
class fsCDragDropComponent : public fsIGestureHandlingComponent
{
        friend class fsCComponentFactory;
 
public:
 
        static const fsCUniqueId mTypeId;
 
        static const fsCUniqueId mDragEndMsg;
 
#ifdef COLLISION_DEBUG_MESSAGES
        static const fsCUniqueId mDragingMsg;
#endif
        static fsCEntity* dragDropEntityCreate(const fsStr& pEntName, std::shared_ptr<fsCBrush> pBrush, fsCEntity* pEnt,
                                               const fsPoint& pOffset);
 
        void dragStart(const fsPoint& pPos, fsS32 pPointerIndexForDrag);
 
protected:
 
        fsBool acceptingInputGet() const override;
 
        void onDragMove(const fsPoint& pCurrPos) override;
        void onDragEnd(const fsPoint& pEndPos) override;
 
        void renderDo() override;
        void matrixApplyDo() override;
 
        static fsIComponent* create(fsCEntity* pParent);
 
        fsCDragDropComponent(fsCEntity* pParent);
        virtual ~fsCDragDropComponent();
 
private:
 
        void spritePositionSet(const fsPoint& pCurrPos) const;
 
        const fsS32 mTouchFingerVerticalOffset;
        fsPoint mOffset;
#ifdef COLLISION_DEBUG_RENDERING
        fsCLine* mLine;
#endif
};
 
#endif