Diff: GFXFb.h

Revision:

0:0fdadbc3d852

Child:

12:15597e45eea0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/GFXFb.h	Thu Sep 26 06:37:02 2013 +0000
@@ -0,0 +1,100 @@
+
+#ifndef GFXFB_H
+#define GFXFB_H
+
+#include "Adafruit_GFX.h"
+
+#define BLACK         0x0000
+/* Light gray color, 565 mode */
+#define LIGHTGRAY     0X7BEF
+/* Dark gray color, 565 mode */
+#define DARKGRAY      0x39E7
+/* White color, 565 mode */
+#define WHITE         0xffff
+/* Red color, 565 mode */
+#define RED           0xF800
+/* Green color, 565 mode */
+#define GREEN         0x07E0
+/* Blue color, 565 mode */
+#define BLUE          0x001F
+/* Magenta color, 565 mode */
+#define MAGENTA       (RED | BLUE)
+/* Cyan color, 565 mode */
+#define CYAN          (GREEN | BLUE)
+/* Yellow color, 565 mode */
+#define YELLOW        (RED | GREEN)
+/* Light red color, 565 mode */
+#define LIGHTRED      0x7800
+/* Light green color, 565 mode */
+#define LIGHTGREEN    0x03E0
+/* Light blue color, 565 mode */
+#define LIGHTBLUE     0x000F
+/* Light magenta color, 565 mode */
+#define LIGHTMAGENTA  (LIGHTRED | LIGHTBLUE)
+/* Light cyan color, 565 mode */
+#define LIGHTCYAN     (LIGHTGREEN | LIGHTBLUE)
+/* Light yellow color, 565 mode */
+#define LIGHTYELLOW   (LIGHTRED | LIGHTGREEN)
+
+/**
+ * Graphical library based on Adafruit's GFX using a Frame buffer.
+ */
+class GFXFb : public Adafruit_GFX {
+public:
+
+    /** Create an interface to the GFX graphical library
+     *
+     * @param w width of the display
+     * @param h height of the display
+     * @param fb frame buffer that will be used by the graphical library. Can
+     * be set by calling setFb instead.
+     */
+    GFXFb(uint16_t w, uint16_t h, uint16_t* fb = 0);
+
+    virtual void drawPixel(int16_t x, int16_t y, 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 fillScreen(uint16_t color);
+
+    /** Associate a frame buffer with the graphical library.
+     *  All drawing requests will be performed on the frame buffer.
+     *
+     * @param fb frame buffer that will be used by the graphical library
+     */
+    void setFb(uint16_t* fb) {_fb = fb;}
+
+    /** Get the frame buffer associated with the graphical library.
+     *
+     * @returns the frame buffer associated with the graphical library.
+     */
+    uint16_t* getFb() {return _fb;}
+
+    /** Write a null-terminated string
+     *
+     * @param s the string to write on the display
+     */
+    void writeString(const char* s);
+
+    /** Get the width in pixels of the given string.
+     *
+     * @param s width will be calculated on this string
+     * @returns the width in pixels of the string
+     */
+    int16_t getStringWidth(const char* s);
+
+    /** Get the height in pixels of the given string.
+     *
+     * @param s height will be calculated on this string
+     * @returns the height in pixels of the string
+     */
+    int16_t getStringHeight(const char* s);
+
+
+private:
+
+    uint16_t* _fb;
+};
+
+#endif
+
+