Diff: TextDisplay.h

Revision:

29:422616aa04bd

Parent:

19:3f82c1161fd2

Child:

31:c72e12cd5c67

--- a/TextDisplay.h	Fri Jan 17 17:24:05 2014 +0000
+++ b/TextDisplay.h	Sun Jan 19 04:24:16 2014 +0000
@@ -40,11 +40,12 @@
 
     /** output a character at the given position
      *
-     * @param column column where charater must be written
-     * @param  row where character must be written
+     * @param x position in pixels
+     * @param y position in pixels
      * @param c the character to be written to the TextDisplay
+     * @returns number of pixels to advance the cursor.
      */
-    virtual void character(int column, int row, int c) = 0;
+    virtual int character(int x, int y, int c) = 0;
 
     /** return number if rows on TextDisplay
      * @result number of rows
@@ -65,7 +66,7 @@
 
     /** clear screen
     */
-    virtual RetCode_t cls();
+    virtual RetCode_t cls() = 0;
     virtual RetCode_t locate(unsigned int column, unsigned int row) = 0;
     virtual RetCode_t foreground(uint16_t colour) = 0;
     virtual RetCode_t background(uint16_t colour) = 0;