gfx.h

#pragma once

#include <mraa.hpp>

#define adagfxswap(a, b) { int16_t t = a; a = b; b = t; }

namespace upm 
{
    class GFX {
        public:
        
            GFX(int16_t w, int16_t h);
             
            virtual void drawPixel(int16_t x, int16_t y, uint16_t color) = 0;
            
            virtual void drawLine(int16_t x0, 
                                  int16_t y0, 
                                  int16_t x1, 
                                  int16_t y1, 
                                  uint16_t color);
            
            virtual void drawFastVLine(int16_t x, 
                                       int16_t y, 
                                       int16_t h, 
                                       uint16_t color);
            
            virtual void drawFastHLine(int16_t x, 
                                       int16_t y, 
                                       int16_t w, 
                                       uint16_t color);
    
            virtual void drawRect(int16_t x, 
                                  int16_t y, 
                                  int16_t w, 
                                  int16_t h, 
                                  uint16_t color);
                                 
            virtual void fillRect(int16_t x, 
                                  int16_t y, 
                                  int16_t w, 
                                  int16_t h, 
                                  uint16_t color);
    
            virtual void fillScreen(uint16_t color);
    
            virtual void invertDisplay(bool i);
            
            void drawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color);
            
            void drawCircleHelper(int16_t x0, 
                                  int16_t y0, 
                                  int16_t r, 
                                  uint8_t cornername,
                                  uint16_t color);

            void fillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color);
    
            void fillCircleHelper(int16_t x0, 
                                  int16_t y0, 
                                  int16_t r, 
                                  uint8_t cornername,
                                  int16_t delta,
                                  uint16_t color);
                                  
            void drawTriangle(int16_t x0, 
                              int16_t y0, 
                              int16_t x1, 
                              int16_t y1,
                              int16_t x2, 
                              int16_t y2, 
                              uint16_t color);
                              
            void fillTriangle(int16_t x0,
                              int16_t y0,
                              int16_t x1,
                              int16_t y1,
                              int16_t x2,
                              int16_t y2,
                              uint16_t color);

            void drawRoundRect(int16_t x0, 
                               int16_t y0, 
                               int16_t w, 
                               int16_t h,
                               int16_t radius, 
                               uint16_t color);
                               
            void fillRoundRect(int16_t x0, 
                               int16_t y0, 
                               int16_t w, 
                               int16_t h,
                               int16_t radius, 
                               uint16_t color);
                               
            void drawChar(int16_t x, 
                          int16_t y, 
                          unsigned char c, 
                          uint16_t color,
                          uint16_t bg, 
                          uint8_t size);
            
            int16_t getCursorX(void) const;
            
            int16_t getCursorY(void) const;
             
            void setCursor(int16_t x, int16_t y);
             
            void setTextColor(uint16_t c);
            
            void setTextColor(uint16_t c, uint16_t bg);
            
            void setTextSize(uint8_t s);
            
            void setTextWrap(bool w);
            
            uint8_t getRotation(void) const;
            
            void setRotation(uint8_t r);
                        
            void cp437(bool x);
            
            virtual void write(uint8_t c);
            
            void print(std::string msg);
            
            int16_t width(void) const;
            
            int16_t height(void) const;
            
        protected:
        
            const int16_t WIDTH;
            const int16_t HEIGHT;
            
            int16_t _width;
            int16_t _height;
            
            uint8_t rotation;
            
            uint16_t textcolor;
            uint16_t textbgcolor;
            int16_t cursor_x;
            int16_t cursor_y;
            uint8_t textsize;
            bool wrap;
            bool _cp437;
            static const unsigned char font[];
    };
}