subwindow.cpp

00001 /*
00002  * mbed LCDWindow library
00003 * Copyright (c) 2010 Hendrik Lipka
00004 * 
00005 * Permission is hereby granted, free of charge, to any person obtaining a copy
00006 * of this software and associated documentation files (the "Software"), to deal
00007 * in the Software without restriction, including without limitation the rights
00008 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00009 * copies of the Software, and to permit persons to whom the Software is
00010 * furnished to do so, subject to the following conditions:
00011 * 
00012 * The above copyright notice and this permission notice shall be included in
00013 * all copies or substantial portions of the Software.
00014 * 
00015 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00016 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00017 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00018 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00019 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00020 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00021 * THE SOFTWARE.
00022 */
00023 
00024 #include "subwindow.h"
00025 
00026 #include "string.h"
00027 
00028 SubWindow::SubWindow(Window* lcd, const unsigned int columnOffset, const unsigned int rowOffset, const unsigned int columns, const unsigned int rows)
00029 :Window() {
00030     _lcd=lcd;
00031     _columnOffset=columnOffset;
00032     _rowOffset=rowOffset;
00033     _columns=columns;
00034     _rows=rows;
00035 
00036 }
00037 
00038 void SubWindow::character(int column, int row, int c)
00039 {
00040     if (column>_columns || row>_rows)
00041         return;
00042 
00043     _lcd->character(column+_columnOffset, row+_rowOffset, c);
00044 }
00045 
00046 void SubWindow::writeText(const unsigned int column, const unsigned int row, const char* text) {
00047     if (row>_rows)
00048         return;
00049 
00050     char* text2=new char[_columns-column+1];
00051     int i=0;
00052     while (i<_columns-column+1) {
00053         text2[i]=text[i];
00054         if (text[i]=='\0')
00055             break;
00056         i++;
00057     }
00058     text2[_columns-column]='\0';
00059 
00060     _lcd->writeText(column+_columnOffset, row+_rowOffset, text2);
00061     delete [] text2;
00062 }
00063 
00064 void SubWindow::clear() {
00065     char* spaces=new char[_columns+1];
00066     memset(spaces,32,_columns);
00067     spaces[_columns]=0;
00068     for (int i=0;i<_rows;i++) {
00069         _lcd->writeText(_columnOffset,_rowOffset+i,spaces);
00070     }
00071     delete spaces;
00072 }