EACompass.h

00001 // Copyright 2010 Richard Parker
00002 
00003 #ifndef MBED_EACOMPASS_H
00004 #define MBED_EACOMPASS_H
00005 
00006 #include "mbed.h"
00007 
00008 #include "EAWidget.h"
00009 
00010 class EALCD;
00011 
00012 /**
00013  * Class to handle displaying a button on screen with hitbox.
00014  * @author Richard Parker
00015  */
00016 class EACompass: public EAWidget
00017 {
00018 public:  
00019     EACompass( short x = 0, 
00020               short y = 0, 
00021               unsigned short diameter = 0, 
00022               unsigned short angle = 0);
00023               
00024     ~EACompass();
00025     
00026     virtual void paint(EALCD& lcd);
00027     void update(EALCD& lcd, float angle);
00028     
00029     inline void setAngle(float angle) { _angle = angle; }
00030     inline float angle() { return _angle; }    
00031     
00032     inline void setDiameter(unsigned short diameter) { _diameter = diameter; EAWidget::setWidth(diameter); EAWidget::setHeight(diameter);}
00033     inline unsigned short diameter() { return _diameter; }    
00034 
00035     inline virtual void setWidth(unsigned short w) { setDiameter(w); }
00036     inline virtual void setHeight(unsigned short h) { setDiameter(h); }
00037 
00038 private:
00039     float _angle;
00040     unsigned short _diameter;
00041            
00042     void _drawPointer(EALCD& lcd);
00043     void _drawAngle(EALCD& lcd);
00044     
00045 };
00046 
00047 #endif