/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.apps.telnetd;
import java.io.IOException;
import net.wimpi.telnetd.io.TelnetIO;
import net.wimpi.telnetd.io.TerminalIO;
import org.jnode.driver.textscreen.TextScreen;
import org.jnode.driver.textscreen.x86.AbstractPcTextScreen;
/**
*
* @author Fabien DUMINY (fduminy at jnode.org)
*
*/
public class RemoteTextScreen extends AbstractPcTextScreen {
private final TerminalIO terminalIO;
private final char[] buffer;
private int cursorOffset;
/**
* Construct a remote text screen for the given terminal.
*
* @param terminalIO
*/
public RemoteTextScreen(TerminalIO terminalIO) {
super(terminalIO.getColumns(), terminalIO.getRows());
this.terminalIO = terminalIO;
buffer = new char[terminalIO.getColumns() * terminalIO.getRows()];
for (int i = 0; i < buffer.length; i++) {
buffer[i] = ' ';
}
}
/**
* Copy the content of the given rawData into this screen.
*
* @param rawData
* @param rawDataOffset
*/
@Override
public void copyFrom(char[] rawData, int rawDataOffset) {
if (rawDataOffset < 0) {
// Unsafe.die("Screen:rawDataOffset = " + rawDataOffset);
}
char[] cha = new char[rawData.length];
for (int i = 0; i < cha.length; i++) {
cha[i] = getCharacter(rawData[i]);
}
System.arraycopy(cha, rawDataOffset, buffer, 0, buffer.length);
sync(0, buffer.length);
}
/**
* {@inheritDoc}
*/
public void copyContent(int srcOffset, int destOffset, int length) {
System.arraycopy(buffer, srcOffset * 2, buffer, destOffset * 2, length * 2);
sync(destOffset * 2, length * 2);
}
/**
* {@inheritDoc}
*/
public void copyTo(TextScreen dst, int offset, int length) {
// TODO Auto-generated method stub
}
/**
* {@inheritDoc}
*/
public char getChar(int offset) {
return buffer[offset];
}
/**
* {@inheritDoc}
*/
public int getColor(int offset) {
return 0;
}
/**
* {@inheritDoc}
*/
public void set(int offset, char ch, int count, int color) {
buffer[offset] = getCharacter(ch);
sync(offset, 1);
}
private char getCharacter(char ch) {
char c = (char) (ch & 0xFF);
return (c == 0) ? ' ' : c;
}
/**
* {@inheritDoc}
*/
public void set(int offset, char[] ch, int chOfs, int length, int color) {
char[] cha = new char[ch.length];
for (int i = 0; i < cha.length; i++) {
cha[i] = getCharacter(ch[i]);
}
System.arraycopy(cha, chOfs, buffer, offset, length);
sync(offset, length);
}
/**
* {@inheritDoc}
*/
public void set(int offset, char[] ch, int chOfs, int length, int[] colors, int colorsOfs) {
set(offset, ch, chOfs, length, 0);
}
/**
* {@inheritDoc}
*/
public int setCursor(int x, int y) {
try {
terminalIO.setCursor(y, x);
cursorOffset = getOffset(x, y);
} catch (IOException e) {
e.printStackTrace();
}
return cursorOffset;
}
/**
* {@inheritDoc}
*/
public int setCursorVisible(boolean visible) {
// ignore : cursor will allways be visible
return cursorOffset;
}
/**
* {@inheritDoc}
*/
public void sync(int offset, int length) {
try {
final int y = offset / getWidth();
final int x = offset % getWidth();
terminalIO.setCursor(y, x);
final TelnetIO telnetIO = terminalIO.getTelnetIO();
int offs = offset;
for (int i = 0; i < length; i++) {
telnetIO.write(buffer[offs++]);
}
if (terminalIO.isAutoflushing()) {
terminalIO.flush();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}