Martin Werluschnig / Mbed 2 deprecated TINF_GrenzwertUeberwachnug

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Dependencies:   mbed

TextDisplay.cpp@0:2f77ffaa208d, 2018-11-15 (annotated)

Committer:
martwerl
Date:
Thu Nov 15 18:16:10 2018 +0000
Revision:
0:2f77ffaa208d
TINF_GrenzwertUeberwachnug

Who changed what in which revision?

UserRevisionLine numberNew contents of line
martwerl 0:2f77ffaa208d 1 /* mbed TextDisplay Display Library Base Class
martwerl 0:2f77ffaa208d 2 * Copyright (c) 2007-2009 sford
martwerl 0:2f77ffaa208d 3 * Released under the MIT License: http://mbed.org/license/mit
martwerl 0:2f77ffaa208d 4 */
martwerl 0:2f77ffaa208d 5
martwerl 0:2f77ffaa208d 6 #include "TextDisplay.h"
martwerl 0:2f77ffaa208d 7
martwerl 0:2f77ffaa208d 8 TextDisplay::TextDisplay(const char *name) : Stream(name){
martwerl 0:2f77ffaa208d 9 _row = 0;
martwerl 0:2f77ffaa208d 10 _column = 0;
martwerl 0:2f77ffaa208d 11 if (name == NULL) {
martwerl 0:2f77ffaa208d 12 _path = NULL;
martwerl 0:2f77ffaa208d 13 } else {
martwerl 0:2f77ffaa208d 14 _path = new char[strlen(name) + 2];
martwerl 0:2f77ffaa208d 15 sprintf(_path, "/%s", name);
martwerl 0:2f77ffaa208d 16 }
martwerl 0:2f77ffaa208d 17 }
martwerl 0:2f77ffaa208d 18
martwerl 0:2f77ffaa208d 19 int TextDisplay::_putc(int value) {
martwerl 0:2f77ffaa208d 20 if(value == '\n') {
martwerl 0:2f77ffaa208d 21 _column = 0;
martwerl 0:2f77ffaa208d 22 _row++;
martwerl 0:2f77ffaa208d 23 if(_row >= rows()) {
martwerl 0:2f77ffaa208d 24 _row = 0;
martwerl 0:2f77ffaa208d 25 }
martwerl 0:2f77ffaa208d 26 } else {
martwerl 0:2f77ffaa208d 27 character(_column, _row, value);
martwerl 0:2f77ffaa208d 28 _column++;
martwerl 0:2f77ffaa208d 29 if(_column >= columns()) {
martwerl 0:2f77ffaa208d 30 _column = 0;
martwerl 0:2f77ffaa208d 31 _row++;
martwerl 0:2f77ffaa208d 32 if(_row >= rows()) {
martwerl 0:2f77ffaa208d 33 _row = 0;
martwerl 0:2f77ffaa208d 34 }
martwerl 0:2f77ffaa208d 35 }
martwerl 0:2f77ffaa208d 36 }
martwerl 0:2f77ffaa208d 37 return value;
martwerl 0:2f77ffaa208d 38 }
martwerl 0:2f77ffaa208d 39
martwerl 0:2f77ffaa208d 40 // crude cls implementation, should generally be overwritten in derived class
martwerl 0:2f77ffaa208d 41 void TextDisplay::cls() {
martwerl 0:2f77ffaa208d 42 locate(0, 0);
martwerl 0:2f77ffaa208d 43 for(int i=0; i<columns()*rows(); i++) {
martwerl 0:2f77ffaa208d 44 putc(' ');
martwerl 0:2f77ffaa208d 45 }
martwerl 0:2f77ffaa208d 46 }
martwerl 0:2f77ffaa208d 47
martwerl 0:2f77ffaa208d 48 void TextDisplay::locate(int column, int row) {
martwerl 0:2f77ffaa208d 49 _column = column;
martwerl 0:2f77ffaa208d 50 _row = row;
martwerl 0:2f77ffaa208d 51 }
martwerl 0:2f77ffaa208d 52
martwerl 0:2f77ffaa208d 53 int TextDisplay::_getc() {
martwerl 0:2f77ffaa208d 54 return -1;
martwerl 0:2f77ffaa208d 55 }
martwerl 0:2f77ffaa208d 56
martwerl 0:2f77ffaa208d 57 void TextDisplay::foreground(uint16_t colour) {
martwerl 0:2f77ffaa208d 58 _foreground = colour;
martwerl 0:2f77ffaa208d 59 }
martwerl 0:2f77ffaa208d 60
martwerl 0:2f77ffaa208d 61 void TextDisplay::background(uint16_t colour) {
martwerl 0:2f77ffaa208d 62 _background = colour;
martwerl 0:2f77ffaa208d 63 }
martwerl 0:2f77ffaa208d 64
martwerl 0:2f77ffaa208d 65 bool TextDisplay::claim (FILE *stream) {
martwerl 0:2f77ffaa208d 66 if ( _path == NULL) {
martwerl 0:2f77ffaa208d 67 fprintf(stderr, "claim requires a name to be given in the instantioator of the TextDisplay instance!\r\n");
martwerl 0:2f77ffaa208d 68 return false;
martwerl 0:2f77ffaa208d 69 }
martwerl 0:2f77ffaa208d 70 if (freopen(_path, "w", stream) == NULL) {
martwerl 0:2f77ffaa208d 71 // Failed, should not happen
martwerl 0:2f77ffaa208d 72 return false;
martwerl 0:2f77ffaa208d 73 }
martwerl 0:2f77ffaa208d 74 // make sure we use line buffering
martwerl 0:2f77ffaa208d 75 setvbuf(stdout, NULL, _IOLBF, columns());
martwerl 0:2f77ffaa208d 76 return true;
martwerl 0:2f77ffaa208d 77 }