Andrew Palmer / RA8875 Featured

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of RA8875 by David Smart

TextDisplay.cpp@19:3f82c1161fd2, 2014-01-12 (annotated)

Committer:
WiredHome
Date:
Sun Jan 12 17:40:32 2014 +0000
Revision:
19:3f82c1161fd2
Parent:
0:de9d1462a835
Child:
29:422616aa04bd
Initial commit - mostly working (not Triangles, Externals Fonts). Not ready for other users.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dreschpe 0:de9d1462a835 1 /* mbed TextDisplay Display Library Base Class
dreschpe 0:de9d1462a835 2 * Copyright (c) 2007-2009 sford
dreschpe 0:de9d1462a835 3 * Released under the MIT License: http://mbed.org/license/mit
dreschpe 0:de9d1462a835 4 */
WiredHome 19:3f82c1161fd2 5
dreschpe 0:de9d1462a835 6 #include "TextDisplay.h"
dreschpe 0:de9d1462a835 7
WiredHome 19:3f82c1161fd2 8 TextDisplay::TextDisplay(const char *name) : Stream(name)
WiredHome 19:3f82c1161fd2 9 {
dreschpe 0:de9d1462a835 10 _row = 0;
dreschpe 0:de9d1462a835 11 _column = 0;
dreschpe 0:de9d1462a835 12 if (name == NULL) {
dreschpe 0:de9d1462a835 13 _path = NULL;
dreschpe 0:de9d1462a835 14 } else {
dreschpe 0:de9d1462a835 15 _path = new char[strlen(name) + 2];
dreschpe 0:de9d1462a835 16 sprintf(_path, "/%s", name);
dreschpe 0:de9d1462a835 17 }
dreschpe 0:de9d1462a835 18 }
WiredHome 19:3f82c1161fd2 19
WiredHome 19:3f82c1161fd2 20 int TextDisplay::_putc(int value)
WiredHome 19:3f82c1161fd2 21 {
dreschpe 0:de9d1462a835 22 if(value == '\n') {
dreschpe 0:de9d1462a835 23 _column = 0;
dreschpe 0:de9d1462a835 24 _row++;
dreschpe 0:de9d1462a835 25 if(_row >= rows()) {
dreschpe 0:de9d1462a835 26 _row = 0;
dreschpe 0:de9d1462a835 27 }
dreschpe 0:de9d1462a835 28 } else {
dreschpe 0:de9d1462a835 29 character(_column, _row, value);
dreschpe 0:de9d1462a835 30 _column++;
dreschpe 0:de9d1462a835 31 if(_column >= columns()) {
dreschpe 0:de9d1462a835 32 _column = 0;
dreschpe 0:de9d1462a835 33 _row++;
dreschpe 0:de9d1462a835 34 if(_row >= rows()) {
dreschpe 0:de9d1462a835 35 _row = 0;
dreschpe 0:de9d1462a835 36 }
dreschpe 0:de9d1462a835 37 }
dreschpe 0:de9d1462a835 38 }
dreschpe 0:de9d1462a835 39 return value;
dreschpe 0:de9d1462a835 40 }
dreschpe 0:de9d1462a835 41
dreschpe 0:de9d1462a835 42 // crude cls implementation, should generally be overwritten in derived class
WiredHome 19:3f82c1161fd2 43 RetCode_t TextDisplay::cls()
WiredHome 19:3f82c1161fd2 44 {
dreschpe 0:de9d1462a835 45 locate(0, 0);
dreschpe 0:de9d1462a835 46 for(int i=0; i<columns()*rows(); i++) {
dreschpe 0:de9d1462a835 47 putc(' ');
dreschpe 0:de9d1462a835 48 }
WiredHome 19:3f82c1161fd2 49 return noerror;
dreschpe 0:de9d1462a835 50 }
dreschpe 0:de9d1462a835 51
WiredHome 19:3f82c1161fd2 52 RetCode_t TextDisplay::locate(unsigned int column, unsigned int row)
WiredHome 19:3f82c1161fd2 53 {
dreschpe 0:de9d1462a835 54 _column = column;
dreschpe 0:de9d1462a835 55 _row = row;
WiredHome 19:3f82c1161fd2 56 return noerror;
dreschpe 0:de9d1462a835 57 }
dreschpe 0:de9d1462a835 58
WiredHome 19:3f82c1161fd2 59 int TextDisplay::_getc()
WiredHome 19:3f82c1161fd2 60 {
dreschpe 0:de9d1462a835 61 return -1;
dreschpe 0:de9d1462a835 62 }
WiredHome 19:3f82c1161fd2 63
WiredHome 19:3f82c1161fd2 64 RetCode_t TextDisplay::foreground(uint16_t colour)
WiredHome 19:3f82c1161fd2 65 {
dreschpe 0:de9d1462a835 66 _foreground = colour;
WiredHome 19:3f82c1161fd2 67 return noerror;
dreschpe 0:de9d1462a835 68 }
dreschpe 0:de9d1462a835 69
WiredHome 19:3f82c1161fd2 70 RetCode_t TextDisplay::background(uint16_t colour)
WiredHome 19:3f82c1161fd2 71 {
dreschpe 0:de9d1462a835 72 _background = colour;
WiredHome 19:3f82c1161fd2 73 return noerror;
dreschpe 0:de9d1462a835 74 }
dreschpe 0:de9d1462a835 75
WiredHome 19:3f82c1161fd2 76 bool TextDisplay::claim (FILE *stream)
WiredHome 19:3f82c1161fd2 77 {
dreschpe 0:de9d1462a835 78 if ( _path == NULL) {
WiredHome 19:3f82c1161fd2 79 fprintf(stderr, "claim requires a name to be given in the instantiator of the TextDisplay instance!\r\n");
dreschpe 0:de9d1462a835 80 return false;
dreschpe 0:de9d1462a835 81 }
dreschpe 0:de9d1462a835 82 if (freopen(_path, "w", stream) == NULL) {
dreschpe 0:de9d1462a835 83 // Failed, should not happen
dreschpe 0:de9d1462a835 84 return false;
dreschpe 0:de9d1462a835 85 }
dreschpe 0:de9d1462a835 86 // make sure we use line buffering
dreschpe 0:de9d1462a835 87 setvbuf(stdout, NULL, _IOLBF, columns());
dreschpe 0:de9d1462a835 88 return true;
WiredHome 19:3f82c1161fd2 89 }