Tyler Lisowski / EaEpaper_EM027BS013

EaPaper Library for EM027BS013

Dependencies:   EM027BS013 TFT_fonts

Fork of EaEpaper by Peter Drescher

TextDisplay.cpp@4:672976335e80, 2015-04-02 (annotated)

Committer:
tlisowski3
Date:
Thu Apr 02 16:27:46 2015 +0000
Revision:
4:672976335e80
Parent:
0:fedcef5319f5 
EaPaper Library modified for EM027BS013

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dreschpe 0:fedcef5319f5 1 /* mbed TextDisplay Display Library Base Class
dreschpe 0:fedcef5319f5 2 * Copyright (c) 2007-2009 sford
dreschpe 0:fedcef5319f5 3 * Released under the MIT License: http://mbed.org/license/mit
dreschpe 0:fedcef5319f5 4 */
dreschpe 0:fedcef5319f5 5
dreschpe 0:fedcef5319f5 6 #include "TextDisplay.h"
dreschpe 0:fedcef5319f5 7
dreschpe 0:fedcef5319f5 8 TextDisplay::TextDisplay(const char *name) : Stream(name){
dreschpe 0:fedcef5319f5 9 _row = 0;
dreschpe 0:fedcef5319f5 10 _column = 0;
dreschpe 0:fedcef5319f5 11 if (name == NULL) {
dreschpe 0:fedcef5319f5 12 _path = NULL;
dreschpe 0:fedcef5319f5 13 } else {
dreschpe 0:fedcef5319f5 14 _path = new char[strlen(name) + 2];
dreschpe 0:fedcef5319f5 15 sprintf(_path, "/%s", name);
dreschpe 0:fedcef5319f5 16 }
dreschpe 0:fedcef5319f5 17 }
dreschpe 0:fedcef5319f5 18
dreschpe 0:fedcef5319f5 19 int TextDisplay::_putc(int value) {
dreschpe 0:fedcef5319f5 20 if(value == '\n') {
dreschpe 0:fedcef5319f5 21 _column = 0;
dreschpe 0:fedcef5319f5 22 _row++;
dreschpe 0:fedcef5319f5 23 if(_row >= rows()) {
dreschpe 0:fedcef5319f5 24 _row = 0;
dreschpe 0:fedcef5319f5 25 }
dreschpe 0:fedcef5319f5 26 } else {
dreschpe 0:fedcef5319f5 27 character(_column, _row, value);
dreschpe 0:fedcef5319f5 28 _column++;
dreschpe 0:fedcef5319f5 29 if(_column >= columns()) {
dreschpe 0:fedcef5319f5 30 _column = 0;
dreschpe 0:fedcef5319f5 31 _row++;
dreschpe 0:fedcef5319f5 32 if(_row >= rows()) {
dreschpe 0:fedcef5319f5 33 _row = 0;
dreschpe 0:fedcef5319f5 34 }
dreschpe 0:fedcef5319f5 35 }
dreschpe 0:fedcef5319f5 36 }
dreschpe 0:fedcef5319f5 37 return value;
dreschpe 0:fedcef5319f5 38 }
dreschpe 0:fedcef5319f5 39
dreschpe 0:fedcef5319f5 40 // crude cls implementation, should generally be overwritten in derived class
dreschpe 0:fedcef5319f5 41 void TextDisplay::cls() {
dreschpe 0:fedcef5319f5 42 locate(0, 0);
dreschpe 0:fedcef5319f5 43 for(int i=0; i<columns()*rows(); i++) {
dreschpe 0:fedcef5319f5 44 putc(' ');
dreschpe 0:fedcef5319f5 45 }
dreschpe 0:fedcef5319f5 46 }
dreschpe 0:fedcef5319f5 47
dreschpe 0:fedcef5319f5 48 void TextDisplay::locate(int column, int row) {
dreschpe 0:fedcef5319f5 49 _column = column;
dreschpe 0:fedcef5319f5 50 _row = row;
dreschpe 0:fedcef5319f5 51 }
dreschpe 0:fedcef5319f5 52
dreschpe 0:fedcef5319f5 53 int TextDisplay::_getc() {
dreschpe 0:fedcef5319f5 54 return -1;
dreschpe 0:fedcef5319f5 55 }
dreschpe 0:fedcef5319f5 56
dreschpe 0:fedcef5319f5 57 void TextDisplay::foreground(uint16_t colour) {
dreschpe 0:fedcef5319f5 58 _foreground = colour;
dreschpe 0:fedcef5319f5 59 }
dreschpe 0:fedcef5319f5 60
dreschpe 0:fedcef5319f5 61 void TextDisplay::background(uint16_t colour) {
dreschpe 0:fedcef5319f5 62 _background = colour;
dreschpe 0:fedcef5319f5 63 }
dreschpe 0:fedcef5319f5 64
dreschpe 0:fedcef5319f5 65 bool TextDisplay::claim (FILE *stream) {
dreschpe 0:fedcef5319f5 66 if ( _path == NULL) {
dreschpe 0:fedcef5319f5 67 fprintf(stderr, "claim requires a name to be given in the instantioator of the TextDisplay instance!\r\n");
dreschpe 0:fedcef5319f5 68 return false;
dreschpe 0:fedcef5319f5 69 }
dreschpe 0:fedcef5319f5 70 if (freopen(_path, "w", stream) == NULL) {
dreschpe 0:fedcef5319f5 71 // Failed, should not happen
dreschpe 0:fedcef5319f5 72 return false;
dreschpe 0:fedcef5319f5 73 }
dreschpe 0:fedcef5319f5 74 // make sure we use line buffering
dreschpe 0:fedcef5319f5 75 setvbuf(stdout, NULL, _IOLBF, columns());
dreschpe 0:fedcef5319f5 76 return true;
dreschpe 0:fedcef5319f5 77 }