Louis Lagendijk L / TextDisplays

A TextDisplay driver that supports graphical displays using on of the SED133x conrtrolers. Allows stdout and stderr output to be redirected to the display.

TextDisplay.cpp

Committer:
llagendijk
Date:
2011-01-15
Revision:
1:18c56f038905
Parent:
0:9e72c57b16fd
Child:
2:8596e06f241f

File content as of revision 1:18c56f038905:

/* mbed TextDisplay Display Library Base Class
 * Copyright (c) 2007-2009 sford
 * Released under the MIT License: http://mbed.org/license/mit
 */

#include "TextDisplay.h"

TextDisplay::TextDisplay(const char *name) : Stream(name) {
    _row = 0;
    _column = 0;
}

int TextDisplay::_putc(int value) {
    if (value == '\n') {
        _column = 0;
        _row++;
        if (_row >= rows()) {
            _row = 0;
        }
    } else {
        character(_column, _row, value);
        _column++;
        if (_column >= columns()) {
            _column = 0;
            _row++;
            if (_row >= rows()) {
                _row = 0;
            }
        }
    }
    return value;
}

// crude cls implementation, should generally be overwritten in derived class
void TextDisplay::cls() {
    locate(0, 0);
    for (int i=0; i<columns()*rows(); i++) {
        putc(' ');
    }
}

void TextDisplay::locate(uint16_t column, uint16_t row) {
    _column = column;
    _row = row;
}

int TextDisplay::_getc() {
    return -1;
}

void TextDisplay::foreground(uint32_t colour) {
    _foreground = colour;
}

void TextDisplay::background(uint32_t colour) {
    _background = colour;
}