Diff: TextDisplay.h

Revision:

0:cc002f2fad97

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TextDisplay.h	Tue Sep 15 10:02:04 2009 +0000
@@ -0,0 +1,46 @@
+/* mbed TextDisplay Display Library Base Class
+ * Copyright (c) 2007-2009 sford
+ * Released under the MIT License: http://mbed.org/license/mit
+ *
+ * A common base class for Text displays
+ * To port a new display, derive from this class and implement
+ * the constructor (setup the display), character (put a character
+ * at a location), rows and columns functions. Everything else
+ * (locate, printf, putc, cls) will come for free
+ */
+
+#ifndef MBED_TEXTDISPLAY_H
+#define MBED_TEXTDISPLAY_H
+
+#include "mbed.h"
+
+class TextDisplay : public Stream {
+public:
+
+    // functions to implement in derived class
+    TextDisplay();
+    virtual void character(int column, int row, int c) = 0;
+    virtual int rows() = 0;
+    virtual int columns() = 0;
+    
+    virtual void cls();
+    virtual void locate(int column, int row);
+    virtual void foreground(int colour);
+    virtual void background(int colour);
+    // putc, printf also available from Stream
+    
+protected:
+
+    virtual int _putc(int value);
+    virtual int _getc();
+
+    // character location
+    short _column;
+    short _row;
+
+    // colours
+    int _foreground;
+    int _background;
+};
+
+#endif