tmk_core/tool/mbed/mbed-sdk/libraries/tests/mbed/freopen/TextDisplay.cpp

   1 /* mbed TextDisplay Display Library Base Class
   2  * Copyright (c) 2007-2009 sford
   3  * Released under the MIT License: http://mbed.org/license/mit
   4  */
   5
   6 #include "TextDisplay.h"
   7
   8 TextDisplay::TextDisplay(const char *name) : Stream(name) {
   9     _row = 0;
  10     _column = 0;
  11 }
  12
  13 int TextDisplay::_putc(int value) {
  14     if(value == '\n') {
  15         _column = 0;
  16         _row++;
  17         if(_row >= rows()) {
  18             _row = 0;
  19         }
  20     } else {
  21         character(_column, _row, value);
  22         _column++;
  23         if(_column >= columns()) {
  24             _column = 0;
  25             _row++;
  26             if(_row >= rows()) {
  27                 _row = 0;
  28             }
  29         }
  30     }
  31     return value;
  32 }
  33
  34 // crude cls implementation, should generally be overwritten in derived class
  35 void TextDisplay::cls() {
  36     locate(0, 0);
  37     for(int i=0; i<columns()*rows(); i++) {
  38         putc(' ');
  39     }
  40 }
  41
  42 void TextDisplay::locate(int column, int row) {
  43     _column = column;
  44     _row = row;
  45 }
  46
  47 int TextDisplay::_getc() {
  48     return -1;
  49 }
  50
  51 void TextDisplay::foreground(int colour) {
  52     _foreground = colour;
  53 }
  54
  55 void TextDisplay::background(int colour) {
  56     _background = colour;
  57 }