File content as of revision 0:3e9c32359703:

#ifndef _ADAFRUIT_GFX_H
#define _ADAFRUIT_GFX_H
#define BLACK 0
#define WHITE 1
#ifndef _BV
#define _BV(bit) (1<<(bit))
#endif

#define swap(a, b) { int16_t t = a; a = b; b = t; }

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)
    {}; // Constructor

    // This MUST be defined by the subclass:
    virtual void drawPixel(int16_t x, int16_t y, uint16_t color) = 0;

    virtual int _putc(int value) {
        return writeChar(value);
    };
    virtual int _getc() {
        return -1;
    };

    virtual void invertDisplay(bool i);

    // 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);
    virtual void drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color);
    virtual void drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color);
    virtual void drawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color);
    virtual void fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color);
    virtual void fillScreen(uint16_t color);

    // These exist only with Adafruit_GFX (no subclass overrides)
    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);
    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);

    void drawTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color);
    void fillTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color);
    void drawRoundRect(int16_t x0, int16_t y0, int16_t w, int16_t h, int16_t radius, uint16_t color);
    void fillRoundRect(int16_t x0, int16_t y0, int16_t w, int16_t h, int16_t radius, uint16_t color);

    void drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color);
    void drawChar(int16_t x, int16_t y, unsigned char c, uint16_t color, uint16_t bg, uint8_t size);

    void setCursor(int16_t x, int16_t y) {
        cursor_x = x;
        cursor_y = y;
    };
    void setTextSize(uint8_t s) {
        textsize = (s > 0) ? s : 1;
    };
    void setTextColor(uint16_t c) {
        textcolor = c;
        textbgcolor = c;
    }
    void setTextColor(uint16_t c, uint16_t b) {
        textcolor = c;
        textbgcolor = b;
    };
    void setTextWrap(bool w) {
        wrap = w;
    };

    virtual size_t writeChar(uint8_t);

    int16_t height(void) {
        return _height;
    };
    int16_t width(void) {
        return _width;
    };

    void setRotation(uint8_t r);
    uint8_t getRotation(void) {
        rotation%=4;
        return rotation;
    };

protected:
    int16_t _rawWidth, _rawHeight; // Display w/h as modified by current rotation
    int16_t _width, _height; // Display w/h as modified by current rotation
    int16_t cursor_x, cursor_y;
    uint16_t    textcolor, textbgcolor;
    uint8_t textsize,rotation;
    bool    wrap; // If set, 'wrap' text at right edge of display
};

#endif // _ADAFRUIT_GFX_H