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/*******************************************************************************
* Copyright (c) 2012 tieto deutschland gmbh (http://www.tieto.com)
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Thomas Jung (initial contribution)
* Thomas Schuetz
*******************************************************************************/
package org.eclipse.etrice.tutorials.simulators.trafficlight;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
public class TrafficLight2 extends Canvas {
private static final long serialVersionUID = 1L;
// Traffic light has 4 states
public final int RED = 0;
public final int GREEN = 1;
public final int OFF = 2;
private int state;
public TrafficLight2(int state){
this.state = state;
}
public TrafficLight2(){
this.state = 0;
}
private int singleLightSize = 20;
private int xPosition = 5;
private int gap = 5;
public void paint(Graphics g){
Color lightRed = new Color(255,0,0);
Color darkRed = new Color (127,0,0);
Color lightGreen = new Color (0,255,0);
Color darkGreen = new Color (0,127,0);
Color colors [][] = {
{lightRed,darkGreen},
{darkRed,lightGreen},
{darkRed,darkGreen}
};
// set Background
g.setColor(Color.lightGray);
g.fillRect(0,0,getSize().width,getSize().height);
// draw boarder
g.setColor(Color.BLACK);
g.drawRect(0,0,getSize().width-1,getSize().height-1);
for (int i = 0; i<2; i++) {
g.setColor(colors[state][i]);
g.fillOval(xPosition,i*singleLightSize+gap,singleLightSize,singleLightSize);
g.setColor(Color.black);
g.drawOval(xPosition,i*singleLightSize+gap,singleLightSize-1,singleLightSize-1);
}
}
public Dimension getPreferredSize(){
return new Dimension(singleLightSize + 2 * gap, singleLightSize * 2 + 2 * gap);
}
public Dimension getMinimumSize()
{
return new Dimension(singleLightSize + 2 * gap, singleLightSize * 2 + 2 * gap);
}
public void setState(int state)
{
// avoid array error
if (state < 3){
this.state = state;
repaint();
}
}
}
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