Hendrik Lipka / LcdWindow

Display text on LCD displays (even on multiple ones). Allow to create windows (frames) on display, and to combine them (split, add, duplicate, scroll). See http://mbed.org/users/hlipka/notebook/lcdwindow/ for more information.

Dependents:   Mbell

terminal.cpp@9:2fe93daa2106, 2011-02-22 (annotated)

Committer:
hlipka
Date:
Tue Feb 22 22:57:44 2011 +0000
Revision:
9:2fe93daa2106
Parent:
3:e5d5e2fe4bf6 
fixed semaphore handling - should now be really thread safe (can be called from interrupts)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hlipka 0:ae5037e3d6e0 1 /*
hlipka 0:ae5037e3d6e0 2 * mbed LCDWindow library
hlipka 0:ae5037e3d6e0 3 * Copyright (c) 2010 Hendrik Lipka
hlipka 2:5ac5bab7daaf 4 *
hlipka 0:ae5037e3d6e0 5 * Permission is hereby granted, free of charge, to any person obtaining a copy
hlipka 0:ae5037e3d6e0 6 * of this software and associated documentation files (the "Software"), to deal
hlipka 0:ae5037e3d6e0 7 * in the Software without restriction, including without limitation the rights
hlipka 0:ae5037e3d6e0 8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
hlipka 0:ae5037e3d6e0 9 * copies of the Software, and to permit persons to whom the Software is
hlipka 0:ae5037e3d6e0 10 * furnished to do so, subject to the following conditions:
hlipka 2:5ac5bab7daaf 11 *
hlipka 0:ae5037e3d6e0 12 * The above copyright notice and this permission notice shall be included in
hlipka 0:ae5037e3d6e0 13 * all copies or substantial portions of the Software.
hlipka 2:5ac5bab7daaf 14 *
hlipka 0:ae5037e3d6e0 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
hlipka 0:ae5037e3d6e0 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
hlipka 0:ae5037e3d6e0 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
hlipka 0:ae5037e3d6e0 18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
hlipka 0:ae5037e3d6e0 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
hlipka 0:ae5037e3d6e0 20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
hlipka 0:ae5037e3d6e0 21 * THE SOFTWARE.
hlipka 0:ae5037e3d6e0 22 */
hlipka 0:ae5037e3d6e0 23
hlipka 0:ae5037e3d6e0 24 #include "terminal.h"
hlipka 0:ae5037e3d6e0 25 #include "string.h"
hlipka 0:ae5037e3d6e0 26
hlipka 3:e5d5e2fe4bf6 27 Terminal::Terminal(Window* window):Window() {
hlipka 0:ae5037e3d6e0 28 _window=window;
hlipka 2:5ac5bab7daaf 29 _columns=window->getColumns();
hlipka 2:5ac5bab7daaf 30 _rows=window->getRows();
hlipka 2:5ac5bab7daaf 31 _lineBuffer=new char*[_rows];
hlipka 2:5ac5bab7daaf 32 clear();
hlipka 0:ae5037e3d6e0 33 }
hlipka 0:ae5037e3d6e0 34
hlipka 2:5ac5bab7daaf 35 char* Terminal::createLine() {
hlipka 2:5ac5bab7daaf 36 char* text=new char[_columns+1];
hlipka 2:5ac5bab7daaf 37 memset(text,32,_columns);
hlipka 2:5ac5bab7daaf 38 text[_columns]=0;
hlipka 0:ae5037e3d6e0 39 return text;
hlipka 0:ae5037e3d6e0 40 }
hlipka 0:ae5037e3d6e0 41
hlipka 2:5ac5bab7daaf 42 void Terminal::character(int column, int row, int c) {
hlipka 2:5ac5bab7daaf 43 if (column>_columns || row > _rows) {
hlipka 2:5ac5bab7daaf 44 return;
hlipka 2:5ac5bab7daaf 45 }
hlipka 2:5ac5bab7daaf 46 _lineBuffer[row][column]=c;
hlipka 2:5ac5bab7daaf 47 _window->character(column,row,c);
hlipka 2:5ac5bab7daaf 48
hlipka 2:5ac5bab7daaf 49 }
hlipka 2:5ac5bab7daaf 50
hlipka 2:5ac5bab7daaf 51 void Terminal::writeText(const unsigned int column, const unsigned int row, const char text[]) {
hlipka 2:5ac5bab7daaf 52 _window->writeText(column,row,text);
hlipka 2:5ac5bab7daaf 53 int min=column+strlen(text);
hlipka 2:5ac5bab7daaf 54 if (min>_columns)
hlipka 2:5ac5bab7daaf 55 min=_columns;
hlipka 2:5ac5bab7daaf 56 for (int i=column;i<min;i++) {
hlipka 2:5ac5bab7daaf 57 _lineBuffer[row][i]=text[i-column]; // copy text into proper line
hlipka 0:ae5037e3d6e0 58 }
hlipka 0:ae5037e3d6e0 59 }
hlipka 0:ae5037e3d6e0 60
hlipka 1:65f72ed914fa 61 void Terminal::addText(const char text[]) {
hlipka 2:5ac5bab7daaf 62 delete [] _lineBuffer[0];
hlipka 2:5ac5bab7daaf 63 for (int i=0;i<_rows-1;i++) {
hlipka 2:5ac5bab7daaf 64 _lineBuffer[i]=_lineBuffer[i+1];
hlipka 0:ae5037e3d6e0 65 }
hlipka 2:5ac5bab7daaf 66 _lineBuffer[_rows-1]=createLine();
hlipka 2:5ac5bab7daaf 67 memset(_lineBuffer[_rows-1],32,_columns);
hlipka 0:ae5037e3d6e0 68 int min=strlen(text);
hlipka 2:5ac5bab7daaf 69 if (min>_columns)
hlipka 2:5ac5bab7daaf 70 min=_columns;
hlipka 0:ae5037e3d6e0 71 for (int i=0;i<min;i++) {
hlipka 2:5ac5bab7daaf 72 _lineBuffer[_rows-1][i]=text[i]; // copy text into proper line
hlipka 0:ae5037e3d6e0 73 }
hlipka 2:5ac5bab7daaf 74 _window->clear();
hlipka 2:5ac5bab7daaf 75 for (int i=0;i<_rows;i++) {
hlipka 2:5ac5bab7daaf 76 _window->writeText(0,i,_lineBuffer[i]);
hlipka 0:ae5037e3d6e0 77 }
hlipka 0:ae5037e3d6e0 78 }
hlipka 0:ae5037e3d6e0 79
hlipka 0:ae5037e3d6e0 80 void Terminal::clear() {
hlipka 2:5ac5bab7daaf 81 for (int i=0;i<_rows;i++) {
hlipka 2:5ac5bab7daaf 82 _lineBuffer[i]=createLine();
hlipka 2:5ac5bab7daaf 83 }
hlipka 0:ae5037e3d6e0 84 _window->clear();
hlipka 0:ae5037e3d6e0 85 }