Adafruit_GFX.h

00001 /******************************************************************
00002  This is the core graphics library for all our displays, providing
00003  basic graphics primitives (points, lines, circles, etc.). It needs
00004  to be paired with a hardware-specific library for each display
00005  device we carry (handling the lower-level functions).
00006 
00007  Adafruit invests time and resources providing this open
00008  source code, please support Adafruit and open-source hardware
00009  by purchasing products from Adafruit!
00010 
00011  Written by Limor Fried/Ladyada for Adafruit Industries.
00012  BSD license, check license.txt for more information.
00013  All text above must be included in any redistribution.
00014  ******************************************************************/
00015 
00016 #ifndef _ADAFRUIT_GFX_H
00017 #define _ADAFRUIT_GFX_H
00018 
00019 #include "mbed.h"
00020 #include "Stream.h"
00021 
00022 
00023 #define swap(a, b) { int16_t t = a; a = b; b = t; }
00024 #define boolean bool
00025 
00026 class Adafruit_GFX : public Stream
00027 {
00028 public:
00029 
00030     //Adafruit_GFX();
00031     Adafruit_GFX(int16_t w, int16_t h); // Constructor
00032     // i have no idea why we have to formally call the constructor. kinda sux
00033     //void constructor(int16_t w, int16_t h);
00034 
00035     virtual void drawPixel(int16_t x, int16_t y, uint16_t color) = 0;
00036     virtual void invertDisplay(boolean i);
00037 
00038     // these are 'generic' drawing functions, so we can share them!
00039     void drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1,uint16_t color);
00040     virtual void drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color);
00041     virtual void drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color);
00042     virtual void drawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color);
00043     virtual void fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color);
00044     virtual void fillScreen(uint16_t color);
00045 
00046     void drawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color);
00047     void drawCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername, uint16_t color);
00048     void fillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color);
00049     void fillCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername, int16_t delta, uint16_t color);
00050 
00051     void drawTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1,int16_t x2, int16_t y2, uint16_t color);
00052     void fillTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color);
00053     void drawRoundRect(int16_t x0, int16_t y0, int16_t w, int16_t h, int16_t radius, uint16_t color);
00054     void fillRoundRect(int16_t x0, int16_t y0, int16_t w, int16_t h, int16_t radius, uint16_t color);
00055 
00056     void drawBitmap(int16_t x, int16_t y,
00057                     const uint8_t *bitmap, int16_t w, int16_t h,
00058                     uint16_t color);
00059     void drawChar(int16_t x, int16_t y, unsigned char c,
00060                   uint16_t color, uint16_t bg, uint8_t size);
00061 
00062     void setCursor(int16_t x, int16_t y);
00063     void setTextColor(uint16_t c);
00064     void setTextColor(uint16_t c, uint16_t bg);
00065     void setTextSize(uint8_t s);
00066     void setTextWrap(boolean w);
00067 
00068     int16_t height(void);
00069     int16_t width(void);
00070 
00071     void setRotation(uint8_t r);
00072     uint8_t getRotation(void);
00073 
00074 protected:
00075     virtual int _putc(int value);
00076     virtual int _getc();
00077     
00078     const int16_t  WIDTH, HEIGHT;   // this is the 'raw' display w/h - never changes
00079     int16_t  _width, _height; // dependent on rotation
00080     int16_t  cursor_x, cursor_y;
00081     uint16_t textcolor, textbgcolor;
00082     uint8_t  textsize;
00083     uint8_t  rotation;
00084     boolean  wrap; // If set, 'wrap' text at right edge of display
00085 };
00086 
00087 #endif