Christian Weiß / Mittelwert

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Dependencies:   mbed

C12832_copy/TextDisplay.cpp@0:648b08cf7fe8, 2018-11-15 (annotated)

Committer:
Wizo
Date:
Thu Nov 15 18:02:56 2018 +0000
Revision:
0:648b08cf7fe8
Mittelwert

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Wizo 0:648b08cf7fe8 1 /* mbed TextDisplay Display Library Base Class
Wizo 0:648b08cf7fe8 2 * Copyright (c) 2007-2009 sford
Wizo 0:648b08cf7fe8 3 * Released under the MIT License: http://mbed.org/license/mit
Wizo 0:648b08cf7fe8 4 */
Wizo 0:648b08cf7fe8 5
Wizo 0:648b08cf7fe8 6 #include "TextDisplay.h"
Wizo 0:648b08cf7fe8 7
Wizo 0:648b08cf7fe8 8 TextDisplay::TextDisplay(const char *name) : Stream(name){
Wizo 0:648b08cf7fe8 9 _row = 0;
Wizo 0:648b08cf7fe8 10 _column = 0;
Wizo 0:648b08cf7fe8 11 if (name == NULL) {
Wizo 0:648b08cf7fe8 12 _path = NULL;
Wizo 0:648b08cf7fe8 13 } else {
Wizo 0:648b08cf7fe8 14 _path = new char[strlen(name) + 2];
Wizo 0:648b08cf7fe8 15 sprintf(_path, "/%s", name);
Wizo 0:648b08cf7fe8 16 }
Wizo 0:648b08cf7fe8 17 }
Wizo 0:648b08cf7fe8 18
Wizo 0:648b08cf7fe8 19 int TextDisplay::_putc(int value) {
Wizo 0:648b08cf7fe8 20 if(value == '\n') {
Wizo 0:648b08cf7fe8 21 _column = 0;
Wizo 0:648b08cf7fe8 22 _row++;
Wizo 0:648b08cf7fe8 23 if(_row >= rows()) {
Wizo 0:648b08cf7fe8 24 _row = 0;
Wizo 0:648b08cf7fe8 25 }
Wizo 0:648b08cf7fe8 26 } else {
Wizo 0:648b08cf7fe8 27 character(_column, _row, value);
Wizo 0:648b08cf7fe8 28 _column++;
Wizo 0:648b08cf7fe8 29 if(_column >= columns()) {
Wizo 0:648b08cf7fe8 30 _column = 0;
Wizo 0:648b08cf7fe8 31 _row++;
Wizo 0:648b08cf7fe8 32 if(_row >= rows()) {
Wizo 0:648b08cf7fe8 33 _row = 0;
Wizo 0:648b08cf7fe8 34 }
Wizo 0:648b08cf7fe8 35 }
Wizo 0:648b08cf7fe8 36 }
Wizo 0:648b08cf7fe8 37 return value;
Wizo 0:648b08cf7fe8 38 }
Wizo 0:648b08cf7fe8 39
Wizo 0:648b08cf7fe8 40 // crude cls implementation, should generally be overwritten in derived class
Wizo 0:648b08cf7fe8 41 void TextDisplay::cls() {
Wizo 0:648b08cf7fe8 42 locate(0, 0);
Wizo 0:648b08cf7fe8 43 for(int i=0; i<columns()*rows(); i++) {
Wizo 0:648b08cf7fe8 44 putc(' ');
Wizo 0:648b08cf7fe8 45 }
Wizo 0:648b08cf7fe8 46 }
Wizo 0:648b08cf7fe8 47
Wizo 0:648b08cf7fe8 48 void TextDisplay::locate(int column, int row) {
Wizo 0:648b08cf7fe8 49 _column = column;
Wizo 0:648b08cf7fe8 50 _row = row;
Wizo 0:648b08cf7fe8 51 }
Wizo 0:648b08cf7fe8 52
Wizo 0:648b08cf7fe8 53 int TextDisplay::_getc() {
Wizo 0:648b08cf7fe8 54 return -1;
Wizo 0:648b08cf7fe8 55 }
Wizo 0:648b08cf7fe8 56
Wizo 0:648b08cf7fe8 57 void TextDisplay::foreground(uint16_t colour) {
Wizo 0:648b08cf7fe8 58 _foreground = colour;
Wizo 0:648b08cf7fe8 59 }
Wizo 0:648b08cf7fe8 60
Wizo 0:648b08cf7fe8 61 void TextDisplay::background(uint16_t colour) {
Wizo 0:648b08cf7fe8 62 _background = colour;
Wizo 0:648b08cf7fe8 63 }
Wizo 0:648b08cf7fe8 64
Wizo 0:648b08cf7fe8 65 bool TextDisplay::claim (FILE *stream) {
Wizo 0:648b08cf7fe8 66 if ( _path == NULL) {
Wizo 0:648b08cf7fe8 67 fprintf(stderr, "claim requires a name to be given in the instantioator of the TextDisplay instance!\r\n");
Wizo 0:648b08cf7fe8 68 return false;
Wizo 0:648b08cf7fe8 69 }
Wizo 0:648b08cf7fe8 70 if (freopen(_path, "w", stream) == NULL) {
Wizo 0:648b08cf7fe8 71 // Failed, should not happen
Wizo 0:648b08cf7fe8 72 return false;
Wizo 0:648b08cf7fe8 73 }
Wizo 0:648b08cf7fe8 74 // make sure we use line buffering
Wizo 0:648b08cf7fe8 75 setvbuf(stdout, NULL, _IOLBF, columns());
Wizo 0:648b08cf7fe8 76 return true;
Wizo 0:648b08cf7fe8 77 }