mgui/toolcrosshair.h

Go to the documentation of this file.

#ifndef  INC_MGUI_TOOLCROSSHAIR_H
#define  INC_MGUI_TOOLCROSSHAIR_H

#ifndef  INC_MGUI_TOOLBASE_H
#include <mgui/toolbase.h>
#endif

namespace MGUI {

class TOOL_CROSSHAIR : public MGUI::TOOL_LIMITED {
   public:

      explicit TOOL_CROSSHAIR (
         TOOLCANVAS *canvas
         );

      virtual ~TOOL_CROSSHAIR ();

      TOOL_CROSSHAIR& operator= (
         const DPOINT2D& rhs
         ) { SetPoint(rhs,true); return (*this); }

      double GetAngleRotate () const
         { return (m_AngleRotate); }

      double GetAngleShear () const
         { return (m_AngleShear); }

      const DPOINT2D& GetPoint () const
         { return (m_PtCenter); }

      void SetPoint (
         const DPOINT2D& pt,
         bool reset = true             
         );

   private:
      #ifndef GENERATING_DOXYGEN_OUTPUT

      // Enumeration constants
      enum ZONE {
         ZONE_NoFunction = 0,
         ZONE_Inside,
         ZONE_Axis0,
         ZONE_Axis90,
         ZONE_Axis180,
         ZONE_Axis270,
         };
      // Tool position values
      DPOINT2D m_PtCenter;
      DPOINT2D m_PtEnd0;
      DPOINT2D m_PtEnd90;
      DPOINT2D m_PtEnd180;
      DPOINT2D m_PtEnd270;
      double m_AngleRotate;
      double m_AngleShear;
      // Values used during interaction
      ZONE m_PointerZone;

      void ComputeEndPoints ();     
      void ComputePointerZone (MGUI::POINT ptCanvas);
      bool DoRotate (MGUI::POINT ptCanvas);
      bool DoShear (MGUI::POINT ptCanvas);
      void UpdateCursor ();

      // TOOL_BASE overrides.
      virtual void v_DoDraw ();
      virtual int v_GenerateRegion (REGION2D& region) const;
      virtual void v_DoMove (double dx, double dy, ADJUSTFLAGS flags);
      virtual void v_OnClear ();
      virtual bool v_OnPointerButtonDown (MGUI::POINT point, POINTERBUTTON button, KEYSTATE keystate);
      virtual void v_OnPointerMove (MGUI::POINT point, POINTERBUTTON button, KEYSTATE keystate);

      #endif // GENERATING_DOXYGEN_OUTPUT
   };

}  // End namespace MGUI


#endif   // INC_MGUI_TOOLCROSSHAIR_H

---