Angel David Yaguana Hernandez
TextDisplay.cpp@0:ea1b1135bb4e, 2012-04-10 (annotated)
- Committer:
- apm_litoral
- Date:
- Tue Apr 10 03:33:49 2012 +0000
- Revision:
- 0:ea1b1135bb4e
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| apm_litoral | 0:ea1b1135bb4e | 1 | /* mbed TextDisplay Display Library Base Class |
| apm_litoral | 0:ea1b1135bb4e | 2 | * Copyright (c) 2007-2009 sford |
| apm_litoral | 0:ea1b1135bb4e | 3 | * Released under the MIT License: http://mbed.org/license/mit |
| apm_litoral | 0:ea1b1135bb4e | 4 | */ |
| apm_litoral | 0:ea1b1135bb4e | 5 | |
| apm_litoral | 0:ea1b1135bb4e | 6 | #include "TextDisplay.h" |
| apm_litoral | 0:ea1b1135bb4e | 7 | |
| apm_litoral | 0:ea1b1135bb4e | 8 | TextDisplay::TextDisplay(const char *name) : Stream(name){ |
| apm_litoral | 0:ea1b1135bb4e | 9 | _row = 0; |
| apm_litoral | 0:ea1b1135bb4e | 10 | _column = 0; |
| apm_litoral | 0:ea1b1135bb4e | 11 | if (name == NULL) { |
| apm_litoral | 0:ea1b1135bb4e | 12 | _path = NULL; |
| apm_litoral | 0:ea1b1135bb4e | 13 | } else { |
| apm_litoral | 0:ea1b1135bb4e | 14 | _path = new char[strlen(name) + 2]; |
| apm_litoral | 0:ea1b1135bb4e | 15 | sprintf(_path, "/%s", name); |
| apm_litoral | 0:ea1b1135bb4e | 16 | } |
| apm_litoral | 0:ea1b1135bb4e | 17 | } |
| apm_litoral | 0:ea1b1135bb4e | 18 | |
| apm_litoral | 0:ea1b1135bb4e | 19 | int TextDisplay::_putc(int value) { |
| apm_litoral | 0:ea1b1135bb4e | 20 | if(value == '\n') { |
| apm_litoral | 0:ea1b1135bb4e | 21 | _column = 0; |
| apm_litoral | 0:ea1b1135bb4e | 22 | _row++; |
| apm_litoral | 0:ea1b1135bb4e | 23 | if(_row >= rows()) { |
| apm_litoral | 0:ea1b1135bb4e | 24 | _row = 0; |
| apm_litoral | 0:ea1b1135bb4e | 25 | } |
| apm_litoral | 0:ea1b1135bb4e | 26 | } else { |
| apm_litoral | 0:ea1b1135bb4e | 27 | character(_column, _row, value); |
| apm_litoral | 0:ea1b1135bb4e | 28 | _column++; |
| apm_litoral | 0:ea1b1135bb4e | 29 | if(_column >= columns()) { |
| apm_litoral | 0:ea1b1135bb4e | 30 | _column = 0; |
| apm_litoral | 0:ea1b1135bb4e | 31 | _row++; |
| apm_litoral | 0:ea1b1135bb4e | 32 | if(_row >= rows()) { |
| apm_litoral | 0:ea1b1135bb4e | 33 | _row = 0; |
| apm_litoral | 0:ea1b1135bb4e | 34 | } |
| apm_litoral | 0:ea1b1135bb4e | 35 | } |
| apm_litoral | 0:ea1b1135bb4e | 36 | } |
| apm_litoral | 0:ea1b1135bb4e | 37 | return value; |
| apm_litoral | 0:ea1b1135bb4e | 38 | } |
| apm_litoral | 0:ea1b1135bb4e | 39 | |
| apm_litoral | 0:ea1b1135bb4e | 40 | // crude cls implementation, should generally be overwritten in derived class |
| apm_litoral | 0:ea1b1135bb4e | 41 | void TextDisplay::cls() { |
| apm_litoral | 0:ea1b1135bb4e | 42 | locate(0, 0); |
| apm_litoral | 0:ea1b1135bb4e | 43 | for(int i=0; i<columns()*rows(); i++) { |
| apm_litoral | 0:ea1b1135bb4e | 44 | putc(' '); |
| apm_litoral | 0:ea1b1135bb4e | 45 | } |
| apm_litoral | 0:ea1b1135bb4e | 46 | } |
| apm_litoral | 0:ea1b1135bb4e | 47 | |
| apm_litoral | 0:ea1b1135bb4e | 48 | void TextDisplay::locate(int column, int row) { |
| apm_litoral | 0:ea1b1135bb4e | 49 | _column = column; |
| apm_litoral | 0:ea1b1135bb4e | 50 | _row = row; |
| apm_litoral | 0:ea1b1135bb4e | 51 | } |
| apm_litoral | 0:ea1b1135bb4e | 52 | |
| apm_litoral | 0:ea1b1135bb4e | 53 | int TextDisplay::_getc() { |
| apm_litoral | 0:ea1b1135bb4e | 54 | return -1; |
| apm_litoral | 0:ea1b1135bb4e | 55 | } |
| apm_litoral | 0:ea1b1135bb4e | 56 | |
| apm_litoral | 0:ea1b1135bb4e | 57 | void TextDisplay::foreground(uint16_t colour) { |
| apm_litoral | 0:ea1b1135bb4e | 58 | _foreground = colour; |
| apm_litoral | 0:ea1b1135bb4e | 59 | } |
| apm_litoral | 0:ea1b1135bb4e | 60 | |
| apm_litoral | 0:ea1b1135bb4e | 61 | void TextDisplay::background(uint16_t colour) { |
| apm_litoral | 0:ea1b1135bb4e | 62 | _background = colour; |
| apm_litoral | 0:ea1b1135bb4e | 63 | } |
| apm_litoral | 0:ea1b1135bb4e | 64 | |
| apm_litoral | 0:ea1b1135bb4e | 65 | bool TextDisplay::claim (FILE *stream) { |
| apm_litoral | 0:ea1b1135bb4e | 66 | if ( _path == NULL) { |
| apm_litoral | 0:ea1b1135bb4e | 67 | fprintf(stderr, "claim requires a name to be given in the instantioator of the TextDisplay instance!\r\n"); |
| apm_litoral | 0:ea1b1135bb4e | 68 | return false; |
| apm_litoral | 0:ea1b1135bb4e | 69 | } |
| apm_litoral | 0:ea1b1135bb4e | 70 | if (freopen(_path, "w", stream) == NULL) { |
| apm_litoral | 0:ea1b1135bb4e | 71 | // Failed, should not happen |
| apm_litoral | 0:ea1b1135bb4e | 72 | return false; |
| apm_litoral | 0:ea1b1135bb4e | 73 | } |
| apm_litoral | 0:ea1b1135bb4e | 74 | // make sure we use line buffering |
| apm_litoral | 0:ea1b1135bb4e | 75 | setvbuf(stdout, NULL, _IOLBF, columns()); |
| apm_litoral | 0:ea1b1135bb4e | 76 | return true; |
| apm_litoral | 0:ea1b1135bb4e | 77 | } |