Example

Diff: Adafruit_GFX.h

Revision:

11:86909e6db3c8

Parent:

9:ddb97c9850a2

Child:

13:8f03f908f22a

--- a/Adafruit_GFX.h	Sun Oct 19 20:55:27 2014 +0000
+++ b/Adafruit_GFX.h	Tue Oct 21 02:04:08 2014 +0000
@@ -41,6 +41,15 @@
 #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:
@@ -58,6 +67,7 @@
         , 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
@@ -70,43 +80,96 @@
 
 #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);
 #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 bitmap
     void drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color);
+    /// 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
     int16_t width(void) { return _width; };
+    /// Get the height of the display in pixels
     int16_t height(void) { return _height; };
 
+    /// Set the text cursor location, based on the size of the text
     void setTextCursor(int16_t x, int16_t y) { cursor_x = x; cursor_y = y; };
 #if 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
+     */
     void setTextSize(uint8_t s) { textsize = (s > 0) ? s : 1; };
 #endif
+    /// Set the text foreground and background colors to be the same
     void setTextColor(uint16_t c) { textcolor = c; textbgcolor = c; }
+    /// Set the text foreground and background colors independantly
     void setTextColor(uint16_t c, uint16_t b) { textcolor = c; textbgcolor = b; };
+    /// Set text wraping mode true or false
     void setTextWrap(bool w) { wrap = w; };
 
+    /// Set the display rotation, 1, 2, 3, or 4
     void setRotation(uint8_t r);
+    /// Get the current rotation
     uint8_t getRotation(void) { rotation %= 4; return rotation; };
 
 protected: