GUICanvas.h

#pragma once

#include "GUIBase.h"
namespace ParaEngine
{
    class CGUIContainer;
    class C3DCanvas;
    class CGUICanvas:public CGUIBase
    {
    public:
        CGUICanvas();
        virtual ~CGUICanvas();

        virtual void Reset();
        virtual HRESULT Render(GUIState* pGUIState,float fElapsedTime );
        void InitObject(const char * strObjectName, const char * alignment, int x, int y, int width, int height);
        void UpdateRects();
        virtual bool MsgProc(MSG *event);

        //zoom the 3d object 
        void Zoom(double zoom);

        //rotate the 3d object, in radius
        void Rotate(double xrotate,double yrotate);

        //move the 3d object
        void Pan(double x, double y);

        void SetCanvasIndex(int index);
        int GetCanvasIndex()const{return m_nCanvasIndex;}

        virtual IObject* Clone()const;
        virtual void Clone(IObject* pobj)const;
        virtual const IType* GetType()const{return m_type;}
        static void StaticInit();

    protected:
        enum{
            CanvasNone,
            CanvasZoom,
            CanvasRotate,
            CanvasPan
        }CanvasState;
        static const IType*         m_type;
        int                         m_eState;
        int                         m_nCanvasIndex;
        double                      m_fRotateSpeed;
        double                      m_fPanSpeed;
    };
}