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Diffstat (limited to 'ext/Adafruit_GFX.h')
| -rw-r--r-- | ext/Adafruit_GFX.h | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/ext/Adafruit_GFX.h b/ext/Adafruit_GFX.h new file mode 100644 index 0000000..d3c2240 --- /dev/null +++ b/ext/Adafruit_GFX.h @@ -0,0 +1,183 @@ +/*********************************** +This is a our graphics core library, for all our displays. +We'll be adapting all the +existing libaries to use this core to make updating, support +and upgrading easier! + +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 +****************************************/ + +/* + * Modified by Neal Horman 7/14/2012 for use in mbed + */ + +#ifndef _ADAFRUIT_GFX_H_ +#define _ADAFRUIT_GFX_H_ + +#include "Adafruit_GFX_Config.h" + +static inline void swap(int16_t &a, int16_t &b) +{ + int16_t t = a; + + a = b; + b = t; +} + +#ifndef _BV +#define _BV(bit) (1<<(bit)) +#endif + +#define BLACK 0 +#define WHITE 1 + +/** + * This is a Text and Graphics element drawing class. + * These functions draw to the display buffer. + * + * Display drivers should be derived from here. + * The Display drivers push the display buffer to the + * hardware based on application control. + * + */ +class Adafruit_GFX : public Stream +{ + public: + Adafruit_GFX(int16_t w, int16_t h) + : _rawWidth(w) + , _rawHeight(h) + , _width(w) + , _height(h) + , cursor_x(0) + , cursor_y(0) + , textcolor(WHITE) + , textbgcolor(BLACK) + , textsize(1) + , rotation(0) + , wrap(true) + {}; + + /// Paint one BLACK or WHITE pixel in the display buffer + // this must be defined by the subclass + virtual void drawPixel(int16_t x, int16_t y, uint16_t color) = 0; + // this is optional + virtual void invertDisplay(bool i) {}; + + // Stream implementation - provides printf() interface + // You would otherwise be forced to use writeChar() + virtual int _putc(int value) { return writeChar(value); }; + virtual int _getc() { return -1; }; + +#ifdef GFX_WANT_ABSTRACTS + // these are 'generic' drawing functions, so we can share them! + + /** Draw a Horizontal Line + * @note GFX_WANT_ABSTRACTS must be defined in Adafruit_GFX_config.h + */ + virtual void drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color); + /** Draw a rectangle + * @note GFX_WANT_ABSTRACTS must be defined in Adafruit_GFX_config.h + */ + virtual void drawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color); + /** Fill the entire display + * @note GFX_WANT_ABSTRACTS must be defined in Adafruit_GFX_config.h + */ + virtual void fillScreen(uint16_t color); + + /** Draw a circle + * @note GFX_WANT_ABSTRACTS must be defined in Adafruit_GFX_config.h + */ + 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); + + /** Draw and fill a circle + * @note GFX_WANT_ABSTRACTS must be defined in Adafruit_GFX_config.h + */ + 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); + + /** Draw a triangle + * @note GFX_WANT_ABSTRACTS must be defined in Adafruit_GFX_config.h + */ + void drawTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color); + /** Draw and fill a triangle + * @note GFX_WANT_ABSTRACTS must be defined in Adafruit_GFX_config.h + */ + void fillTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color); + + /** Draw a rounded rectangle + * @note GFX_WANT_ABSTRACTS must be defined in Adafruit_GFX_config.h + */ + void drawRoundRect(int16_t x0, int16_t y0, int16_t w, int16_t h, int16_t radius, uint16_t color); + /** Draw and fill a rounded rectangle + * @note GFX_WANT_ABSTRACTS must be defined in Adafruit_GFX_config.h + */ + void fillRoundRect(int16_t x0, int16_t y0, int16_t w, int16_t h, int16_t radius, uint16_t color); + /** Draw a bitmap + * @note GFX_WANT_ABSTRACTS must be defined in Adafruit_GFX_config.h + */ + void drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color); +#endif + +#if defined(GFX_WANT_ABSTRACTS) || defined(GFX_SIZEABLE_TEXT) + /** Draw a line + * @note GFX_WANT_ABSTRACTS or GFX_SIZEABLE_TEXT must be defined in Adafruit_GFX_config.h + */ + virtual void drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color); + /** Draw a vertical line + * @note GFX_WANT_ABSTRACTS or GFX_SIZEABLE_TEXT must be defined in Adafruit_GFX_config.h + */ + virtual void drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color); + /** Draw and fill a rectangle + * @note GFX_WANT_ABSTRACTS or GFX_SIZEABLE_TEXT must be defined in Adafruit_GFX_config.h + */ + virtual void fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color); +#endif + + /// Draw a text character at a specified pixel location + void drawChar(int16_t x, int16_t y, unsigned char c, uint16_t color, uint16_t bg, uint8_t size); + /// Draw a text character at the text cursor location + size_t writeChar(uint8_t); + + /// Get the width of the display in pixels + inline int16_t width(void) { return _width; }; + /// Get the height of the display in pixels + inline int16_t height(void) { return _height; }; + + /// Set the text cursor location, based on the size of the text + inline void setTextCursor(int16_t x, int16_t y) { cursor_x = x; cursor_y = y; }; +#if defined(GFX_WANT_ABSTRACTS) || defined(GFX_SIZEABLE_TEXT) + /** Set the size of the text to be drawn + * @note Make sure to enable either GFX_SIZEABLE_TEXT or GFX_WANT_ABSTRACTS + */ + inline void setTextSize(uint8_t s) { textsize = (s > 0) ? s : 1; }; +#endif + /// Set the text foreground and background colors to be the same + inline void setTextColor(uint16_t c) { textcolor = c; textbgcolor = c; } + /// Set the text foreground and background colors independantly + inline void setTextColor(uint16_t c, uint16_t b) { textcolor = c; textbgcolor = b; }; + /// Set text wraping mode true or false + inline void setTextWrap(bool w) { wrap = w; }; + + /// Set the display rotation, 1, 2, 3, or 4 + void setRotation(uint8_t r); + /// Get the current rotation + inline uint8_t getRotation(void) { rotation %= 4; return rotation; }; + +protected: + int16_t _rawWidth, _rawHeight; // this is the 'raw' display w/h - never changes + int16_t _width, _height; // dependent on rotation + int16_t cursor_x, cursor_y; + uint16_t textcolor, textbgcolor; + uint8_t textsize; + uint8_t rotation; + bool wrap; // If set, 'wrap' text at right edge of display +}; + +#endif |