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This is the core graphics library for all our displays, providing
basic graphics primitives (points, lines, circles, etc.). It needs
to be paired with a hardware-specific library for each display
device we carry (handling the lower-level functions).
Adafruit invests time and resources providing this open
source code, please support Adafruit and open-source hardware
by purchasing products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, check license.txt for more information.
All text above must be included in any redistribution.
******************************************************************/
#ifndef _ADAFRUIT_GFX_H
#define _ADAFRUIT_GFX_H
#if ARDUINO >= 100
#include "Arduino.h"
#include "Print.h"
#else
#include "WProgram.h"
#endif
//#include "PImage.h"
#define swap(a, b) { int16_t t = a; a = b; b = t; }
/* TODO
enum RectMode {
CORNER,
CORNERS,
RADIUS,
CENTER
};
*/
typedef uint16_t color;
class Adafruit_GFX : public Print {
public:
Adafruit_GFX(int16_t w, int16_t h); // Constructor
// This MUST be defined by the subclass:
virtual void drawPixel(int16_t x, int16_t y, uint16_t color) = 0;
// These MAY be overridden by the subclass to provide device-specific
// optimized code. Otherwise 'generic' versions are used.
virtual void
drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color),
drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color),
drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color),
drawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color),
fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color),
fillScreen(uint16_t color),
invertDisplay(boolean i);
// These exist only with Adafruit_GFX (no subclass overrides)
void
drawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color),
drawCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername,
uint16_t color),
fillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color),
fillCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername,
int16_t delta, uint16_t color),
drawTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1,
int16_t x2, int16_t y2, uint16_t color),
fillTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1,
int16_t x2, int16_t y2, uint16_t color),
drawRoundRect(int16_t x0, int16_t y0, int16_t w, int16_t h,
int16_t radius, uint16_t color),
fillRoundRect(int16_t x0, int16_t y0, int16_t w, int16_t h,
int16_t radius, uint16_t color),
drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap,
int16_t w, int16_t h, uint16_t color),
drawChar(int16_t x, int16_t y, unsigned char c, uint16_t color,
uint16_t bg, uint8_t size),
setCursor(int16_t x, int16_t y),
setTextColor(uint16_t c),
setTextColor(uint16_t c, uint16_t bg),
setTextSize(uint8_t s),
setTextWrap(boolean w),
setRotation(uint8_t r);
#if ARDUINO >= 100
virtual size_t write(uint8_t);
#else
virtual void write(uint8_t);
#endif
int16_t
height(void),
width(void);
uint8_t getRotation(void);
/*
* Processing-like graphics primitives
*/
/// transforms a color in 16-bit form given the RGB components.
/// The default implementation makes a 5-bit red, a 6-bit
/// green and a 5-bit blue (MSB to LSB). Devices that use
/// different scheme should override this.
virtual uint16_t newColor(uint8_t red, uint8_t green, uint8_t blue);
// http://processing.org/reference/background_.html
void background(uint8_t red, uint8_t green, uint8_t blue);
void background(color c);
// http://processing.org/reference/fill_.html
void fill(uint8_t red, uint8_t green, uint8_t blue);
void fill(color c);
// http://processing.org/reference/noFill_.html
void noFill();
// http://processing.org/reference/stroke_.html
void stroke(uint8_t red, uint8_t green, uint8_t blue);
void stroke(color c);
// http://processing.org/reference/noStroke_.html
void noStroke();
void text(const char * text, int16_t x, int16_t y);
void text(int value, uint8_t posX, uint8_t posY);
void text(long value, uint8_t posX, uint8_t posY);
void text(char value, uint8_t posX, uint8_t posY);
void textWrap(const char * text, int16_t x, int16_t y);
void textSize(uint8_t size);
// similar to ellipse() in Processing, but with
// a single radius.
// http://processing.org/reference/ellipse_.html
void circle(int16_t x, int16_t y, int16_t r);
void point(int16_t x, int16_t y);
void line(int16_t x1, int16_t y1, int16_t x2, int16_t y2);
void quad(int16_t x1, int16_t y1, int16_t x2, int16_t y2, int16_t x3, int16_t y3, int16_t x4, int16_t y4);
void rect(int16_t x, int16_t y, int16_t width, int16_t height);
void rect(int16_t x, int16_t y, int16_t width, int16_t height, int16_t radius);
void triangle(int16_t x1, int16_t y1, int16_t x2, int16_t y2, int16_t x3, int16_t y3);
/* TODO
void rectMode(RectMode mode);
void pushStyle();
void popStyle();
*/
// PImage loadImage(const char * fileName) { return PImage::loadImage(fileName); }
// void image(PImage & img, uint16_t x, uint16_t y);
protected:
const int16_t
WIDTH, HEIGHT; // This is the 'raw' display w/h - never changes
int16_t
_width, _height, // Display w/h as modified by current rotation
cursor_x, cursor_y;
uint16_t
textcolor, textbgcolor;
uint8_t
textsize,
rotation;
boolean
wrap; // If set, 'wrap' text at right edge of display
/*
* Processing-style graphics state
*/
color strokeColor;
bool useStroke;
color fillColor;
bool useFill;
};
#endif // _ADAFRUIT_GFX_H
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