GraphicsDisplay.h

00001 /* mbed GraphicsDisplay Display Library Base Class
00002  * Copyright (c) 2007-2009 sford
00003  * Released under the MIT License: http://mbed.org/license/mit
00004  *
00005  * A library for providing a common base class for Graphics displays
00006  * To port a new display, derive from this class and implement
00007  * the constructor (setup the display), pixel (put a pixel
00008  * at a location), width and height functions. Everything else
00009  * (locate, printf, putc, cls, window, putp, fill, blit, blitbit) 
00010  * will come for free. You can also provide a specialised implementation
00011  * of window and putp to speed up the results
00012  */
00013 
00014 #ifndef MBED_GRAPHICSDISPLAY_H
00015 #define MBED_GRAPHICSDISPLAY_H
00016 
00017 #include "TextDisplay.h"
00018 
00019 
00020 #define RED     0xf800
00021 #define GREEN   0x07e0
00022 #define BLUE    0x001f
00023 #define BLACK   0x0000
00024 #define YELLOW  0xffe0
00025 #define WHITE   0xffff
00026 
00027 #define FONT_CHAR_WIDTH    8
00028 #define FONT_CHAR_HEIGHT  16
00029 
00030 class GraphicsDisplay : public TextDisplay {
00031 
00032 public:         
00033           
00034     GraphicsDisplay(const char* name);
00035      
00036     virtual void pixel(int x, int y, int colour) = 0;
00037     virtual int width() = 0;
00038     virtual int height() = 0;
00039         
00040     virtual void window(unsigned int x,unsigned int y,unsigned int w,unsigned int h);
00041     virtual void putp(int colour);
00042     
00043     virtual void cls();
00044     virtual void fill(int x, int y, int w, int h, int colour);
00045     virtual void blit(int x, int y, int w, int h, const int *colour);    
00046     virtual void blitbit(int x, int y, int w, int h, const char* colour);
00047     
00048     virtual void character_(int x, int y, char value,int colour = WHITE);
00049 
00050     virtual void character(int column, int row, int value);
00051     virtual int columns();
00052     virtual int rows();
00053 
00054     virtual void sendData(uint16_t data) = 0;
00055     virtual void setAddress(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1) = 0;
00056     
00057     virtual void lcd_display_char(uint16_t hwXpos, //specify x position.
00058                          uint16_t hwYpos, //specify y position.
00059                          uint8_t chChr,   //a char is display.
00060                          uint8_t chSize,  //specify the size of the char
00061                          uint16_t hwColor);
00062 protected:
00063 
00064     // pixel location
00065     short _x;
00066     short _y;
00067     
00068     // window location
00069     short _x1;
00070     short _x2;
00071     short _y1;
00072     short _y2;
00073 
00074 };
00075 
00076 #endif
00077