Simon Ford
The start of a generic Text Display library to drive multiple types of text display in the same way
TextDisplay.cpp@0:e8a5ca303ebd, 2009-11-25 (annotated)
- Committer:
- simon
- Date:
- Wed Nov 25 00:01:31 2009 +0000
- Revision:
- 0:e8a5ca303ebd
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| simon | 0:e8a5ca303ebd | 1 | /* mbed TextDisplay Display Library Base Class |
| simon | 0:e8a5ca303ebd | 2 | * Copyright (c) 2007-2009 sford |
| simon | 0:e8a5ca303ebd | 3 | * Released under the MIT License: http://mbed.org/license/mit |
| simon | 0:e8a5ca303ebd | 4 | */ |
| simon | 0:e8a5ca303ebd | 5 | |
| simon | 0:e8a5ca303ebd | 6 | #include "TextDisplay.h" |
| simon | 0:e8a5ca303ebd | 7 | |
| simon | 0:e8a5ca303ebd | 8 | TextDisplay::TextDisplay() { |
| simon | 0:e8a5ca303ebd | 9 | _row = 0; |
| simon | 0:e8a5ca303ebd | 10 | _column = 0; |
| simon | 0:e8a5ca303ebd | 11 | } |
| simon | 0:e8a5ca303ebd | 12 | |
| simon | 0:e8a5ca303ebd | 13 | int TextDisplay::_putc(int value) { |
| simon | 0:e8a5ca303ebd | 14 | if(value == '\n') { |
| simon | 0:e8a5ca303ebd | 15 | _column = 0; |
| simon | 0:e8a5ca303ebd | 16 | _row++; |
| simon | 0:e8a5ca303ebd | 17 | if(_row >= rows()) { |
| simon | 0:e8a5ca303ebd | 18 | _row = 0; |
| simon | 0:e8a5ca303ebd | 19 | } |
| simon | 0:e8a5ca303ebd | 20 | } else { |
| simon | 0:e8a5ca303ebd | 21 | character(_column, _row, value); |
| simon | 0:e8a5ca303ebd | 22 | _column++; |
| simon | 0:e8a5ca303ebd | 23 | if(_column >= columns()) { |
| simon | 0:e8a5ca303ebd | 24 | _column = 0; |
| simon | 0:e8a5ca303ebd | 25 | _row++; |
| simon | 0:e8a5ca303ebd | 26 | if(_row >= rows()) { |
| simon | 0:e8a5ca303ebd | 27 | _row = 0; |
| simon | 0:e8a5ca303ebd | 28 | } |
| simon | 0:e8a5ca303ebd | 29 | } |
| simon | 0:e8a5ca303ebd | 30 | } |
| simon | 0:e8a5ca303ebd | 31 | return value; |
| simon | 0:e8a5ca303ebd | 32 | } |
| simon | 0:e8a5ca303ebd | 33 | |
| simon | 0:e8a5ca303ebd | 34 | // crude cls implementation, should generally be overwritten in derived class |
| simon | 0:e8a5ca303ebd | 35 | void TextDisplay::cls() { |
| simon | 0:e8a5ca303ebd | 36 | locate(0, 0); |
| simon | 0:e8a5ca303ebd | 37 | for(int i=0; i<columns()*rows(); i++) { |
| simon | 0:e8a5ca303ebd | 38 | putc(' '); |
| simon | 0:e8a5ca303ebd | 39 | } |
| simon | 0:e8a5ca303ebd | 40 | } |
| simon | 0:e8a5ca303ebd | 41 | |
| simon | 0:e8a5ca303ebd | 42 | void TextDisplay::locate(int column, int row) { |
| simon | 0:e8a5ca303ebd | 43 | _column = column; |
| simon | 0:e8a5ca303ebd | 44 | _row = row; |
| simon | 0:e8a5ca303ebd | 45 | } |
| simon | 0:e8a5ca303ebd | 46 | |
| simon | 0:e8a5ca303ebd | 47 | int TextDisplay::_getc() { |
| simon | 0:e8a5ca303ebd | 48 | return -1; |
| simon | 0:e8a5ca303ebd | 49 | } |
| simon | 0:e8a5ca303ebd | 50 | |
| simon | 0:e8a5ca303ebd | 51 | void TextDisplay::foreground(int colour) { |
| simon | 0:e8a5ca303ebd | 52 | _foreground = colour; |
| simon | 0:e8a5ca303ebd | 53 | } |
| simon | 0:e8a5ca303ebd | 54 | |
| simon | 0:e8a5ca303ebd | 55 | void TextDisplay::background(int colour) { |
| simon | 0:e8a5ca303ebd | 56 | _background = colour; |
| simon | 0:e8a5ca303ebd | 57 | } |