TINF_6ABEL18 / Mbed 2 deprecated TINF_Test1_7ABELI

7ABELI_Projekt

Dependencies:   mbed

C12832/TextDisplay.cpp@0:b69a47c4639b, 2018-11-29 (annotated)

Committer:
Wizo
Date:
Thu Nov 29 17:17:23 2018 +0000
Revision:
0:b69a47c4639b
7ABELI_Projekt

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Wizo 0:b69a47c4639b 1 /* mbed TextDisplay Display Library Base Class
Wizo 0:b69a47c4639b 2 * Copyright (c) 2007-2009 sford
Wizo 0:b69a47c4639b 3 * Released under the MIT License: http://mbed.org/license/mit
Wizo 0:b69a47c4639b 4 */
Wizo 0:b69a47c4639b 5
Wizo 0:b69a47c4639b 6 #include "TextDisplay.h"
Wizo 0:b69a47c4639b 7
Wizo 0:b69a47c4639b 8 TextDisplay::TextDisplay(const char *name) : Stream(name){
Wizo 0:b69a47c4639b 9 _row = 0;
Wizo 0:b69a47c4639b 10 _column = 0;
Wizo 0:b69a47c4639b 11 if (name == NULL) {
Wizo 0:b69a47c4639b 12 _path = NULL;
Wizo 0:b69a47c4639b 13 } else {
Wizo 0:b69a47c4639b 14 _path = new char[strlen(name) + 2];
Wizo 0:b69a47c4639b 15 sprintf(_path, "/%s", name);
Wizo 0:b69a47c4639b 16 }
Wizo 0:b69a47c4639b 17 }
Wizo 0:b69a47c4639b 18
Wizo 0:b69a47c4639b 19 int TextDisplay::_putc(int value) {
Wizo 0:b69a47c4639b 20 if(value == '\n') {
Wizo 0:b69a47c4639b 21 _column = 0;
Wizo 0:b69a47c4639b 22 _row++;
Wizo 0:b69a47c4639b 23 if(_row >= rows()) {
Wizo 0:b69a47c4639b 24 _row = 0;
Wizo 0:b69a47c4639b 25 }
Wizo 0:b69a47c4639b 26 } else {
Wizo 0:b69a47c4639b 27 character(_column, _row, value);
Wizo 0:b69a47c4639b 28 _column++;
Wizo 0:b69a47c4639b 29 if(_column >= columns()) {
Wizo 0:b69a47c4639b 30 _column = 0;
Wizo 0:b69a47c4639b 31 _row++;
Wizo 0:b69a47c4639b 32 if(_row >= rows()) {
Wizo 0:b69a47c4639b 33 _row = 0;
Wizo 0:b69a47c4639b 34 }
Wizo 0:b69a47c4639b 35 }
Wizo 0:b69a47c4639b 36 }
Wizo 0:b69a47c4639b 37 return value;
Wizo 0:b69a47c4639b 38 }
Wizo 0:b69a47c4639b 39
Wizo 0:b69a47c4639b 40 // crude cls implementation, should generally be overwritten in derived class
Wizo 0:b69a47c4639b 41 void TextDisplay::cls() {
Wizo 0:b69a47c4639b 42 locate(0, 0);
Wizo 0:b69a47c4639b 43 for(int i=0; i<columns()*rows(); i++) {
Wizo 0:b69a47c4639b 44 putc(' ');
Wizo 0:b69a47c4639b 45 }
Wizo 0:b69a47c4639b 46 }
Wizo 0:b69a47c4639b 47
Wizo 0:b69a47c4639b 48 void TextDisplay::locate(int column, int row) {
Wizo 0:b69a47c4639b 49 _column = column;
Wizo 0:b69a47c4639b 50 _row = row;
Wizo 0:b69a47c4639b 51 }
Wizo 0:b69a47c4639b 52
Wizo 0:b69a47c4639b 53 int TextDisplay::_getc() {
Wizo 0:b69a47c4639b 54 return -1;
Wizo 0:b69a47c4639b 55 }
Wizo 0:b69a47c4639b 56
Wizo 0:b69a47c4639b 57 void TextDisplay::foreground(uint16_t colour) {
Wizo 0:b69a47c4639b 58 _foreground = colour;
Wizo 0:b69a47c4639b 59 }
Wizo 0:b69a47c4639b 60
Wizo 0:b69a47c4639b 61 void TextDisplay::background(uint16_t colour) {
Wizo 0:b69a47c4639b 62 _background = colour;
Wizo 0:b69a47c4639b 63 }
Wizo 0:b69a47c4639b 64
Wizo 0:b69a47c4639b 65 bool TextDisplay::claim (FILE *stream) {
Wizo 0:b69a47c4639b 66 if ( _path == NULL) {
Wizo 0:b69a47c4639b 67 fprintf(stderr, "claim requires a name to be given in the instantioator of the TextDisplay instance!\r\n");
Wizo 0:b69a47c4639b 68 return false;
Wizo 0:b69a47c4639b 69 }
Wizo 0:b69a47c4639b 70 if (freopen(_path, "w", stream) == NULL) {
Wizo 0:b69a47c4639b 71 // Failed, should not happen
Wizo 0:b69a47c4639b 72 return false;
Wizo 0:b69a47c4639b 73 }
Wizo 0:b69a47c4639b 74 // make sure we use line buffering
Wizo 0:b69a47c4639b 75 setvbuf(stdout, NULL, _IOLBF, columns());
Wizo 0:b69a47c4639b 76 return true;
Wizo 0:b69a47c4639b 77 }