LedPanel_GFX.h

00001 /***********************************
00002 This is a our graphics core library, for all our displays. 
00003 We'll be adapting all the
00004 existing libaries to use this core to make updating, support 
00005 and upgrading easier!
00006 
00007 Adafruit invests time and resources providing this open source code, 
00008 please support Adafruit and open-source hardware by purchasing 
00009 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 /*
00017  *  Modified by Neal Horman 7/14/2012 for use in LPC1768
00018  */
00019 
00020 /**
00021  *  Matrix16x16 LEDPanel Grafix library
00022  *
00023  *  @author  Junichi Katsu
00024  *  @version 1.0
00025  *  @date    15-April-2015
00026  *
00027  */
00028 
00029 #ifndef MBED_LEDPANEL_GFX_H_
00030 #define MBED_LEDPANEL_GFX_H_
00031 
00032 #include "font.h"
00033 
00034 static inline void swap(int16_t &a, int16_t &b)
00035 {
00036     int16_t t = a;
00037     
00038     a = b;
00039     b = t;
00040 }
00041 
00042 #ifndef _BV
00043 #define _BV(bit) (1<<(bit))
00044 #endif
00045 
00046 #define BLACK 0
00047 #define WHITE 1
00048 
00049 class LedPanel_GFX : public Stream
00050 {
00051  public:
00052     LedPanel_GFX(int16_t w, int16_t h);
00053 
00054     virtual void drawPixel(int16_t x, int16_t y, uint16_t color) = 0;
00055     // this is optional
00056     virtual void invertDisplay(bool i) {};
00057     
00058     // Stream implementation - provides printf() interface
00059     // You would otherwise be forced to use writeChar()
00060     virtual int _putc(int value) { return writeChar(value); };
00061     virtual int _getc() { return -1; };
00062 
00063 #ifdef WANT_ABSTRACTS
00064     // these are 'generic' drawing functions, so we can share them!
00065     virtual void drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color);
00066     virtual void drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color);
00067     virtual void drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color);
00068     virtual void drawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color);
00069     virtual void fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color);
00070     virtual void fillScreen(uint16_t color);
00071 
00072     void drawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color);
00073     void drawCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername, uint16_t color);
00074     void fillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color);
00075     void fillCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername, int16_t delta, uint16_t color);
00076 
00077     void drawTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color);
00078     void fillTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color);
00079     void drawRoundRect(int16_t x0, int16_t y0, int16_t w, int16_t h, int16_t radius, uint16_t color);
00080     void fillRoundRect(int16_t x0, int16_t y0, int16_t w, int16_t h, int16_t radius, uint16_t color);
00081 #endif
00082 
00083     void drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color);
00084     void drawChar(int16_t x, int16_t y, unsigned char c, uint16_t color, uint16_t bg, uint8_t size);
00085     void draw2Char(int16_t x, int16_t y, unsigned char *c, uint16_t color, uint16_t bg, uint8_t size);
00086     size_t writeChar(uint8_t);
00087 
00088     int16_t width(void) { return _width; };
00089     int16_t height(void) { return _height; };
00090 
00091     void setCursor(int16_t x, int16_t y) { cursor_x = x; cursor_y = y; };
00092     void setTextSize(uint8_t s) { textsize = (s > 0) ? s : 1; };
00093     void setTextColor(uint16_t c) { textcolor = c; textbgcolor = c; }
00094     void setTextColor(uint16_t c, uint16_t b) { textcolor = c; textbgcolor = b; };
00095     void setTextWrap(bool w) { wrap = w; };
00096 
00097     int32_t search_font_area( uint16_t code );
00098     int32_t get_font_pt( uint16_t code ,uint8_t *chr );
00099     
00100 
00101 protected:
00102     int16_t  _rawWidth, _rawHeight;   // this is the 'raw' display w/h - never changes
00103     int16_t  _width, _height; // dependent on rotation
00104     int16_t  cursor_x, cursor_y;
00105     uint16_t textcolor, textbgcolor;
00106     uint8_t  textsize;
00107     uint8_t  rotation;
00108     bool  wrap; // If set, 'wrap' text at right edge of display
00109     FONT_HEAD fnt_head;
00110     uint16_t font_head_size;
00111     uint16_t font_search_tbl[100];
00112 };
00113 
00114 #endif