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authorVasil Zlatanov <v@skozl.com>2017-05-03 16:30:16 +0100
committerVasil Zlatanov <v@skozl.com>2017-05-03 16:30:16 +0100
commita6ed1742539c62186fb903017b52dd48f145ae4f (patch)
treee9f49f0437e1f260b276b45fddcb66ea524f49e3 /ext/Adafruit_GFX.h
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Add template and build environment.
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+/***********************************
+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