Schaltertrennstelle.java

/* 
 * Copyright (c) 2008 Stiftung Deutsches Elektronen-Synchrotron, 
 * Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY.
 *
 * THIS SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "../AS IS" BASIS. 
 * WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED 
 * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE AND 
 * NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR 
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. SHOULD THE SOFTWARE PROVE DEFECTIVE 
 * IN ANY RESPECT, THE USER ASSUMES THE COST OF ANY NECESSARY SERVICING, REPAIR OR 
 * CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. 
 * NO USE OF ANY SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
 * DESY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, 
 * OR MODIFICATIONS.
 * THE FULL LICENSE SPECIFYING FOR THE SOFTWARE THE REDISTRIBUTION, MODIFICATION, 
 * USAGE AND OTHER RIGHTS AND OBLIGATIONS IS INCLUDED WITH THE DISTRIBUTION OF THIS 
 * PROJECT IN THE FILE LICENSE.HTML. IF THE LICENSE IS NOT INCLUDED YOU MAY FIND A COPY 
 * AT HTTP://WWW.DESY.DE/LEGAL/LICENSE.HTM
 */
 package org.csstudio.sds.components.ui.internal.switchtypes;

import org.csstudio.sds.components.common.CosySwitch;
import org.csstudio.sds.components.ui.internal.utils.Trigonometry;
import org.eclipse.draw2d.Graphics;
import org.eclipse.swt.SWT;

/**
 * The Schaltertrennstelle switch type.
 * 
 * @author jbercic
 *
 */
public final class Schaltertrennstelle extends CosySwitch {
	
	/**
	 * Constructor.
	 */
	public Schaltertrennstelle() {
	}
	
	/**
	 * {@inheritDoc}
	 */
	@Override
	protected void paintBase(final Graphics gfx, final int width, final int height) {
		int disp=gfx.getLineWidth()/2+gfx.getLineWidth()%2;
		int delta=(int)Math.round((double)width/4.0*Trigonometry.sin(13.0));
		gfx.drawRectangle(disp,4*disp+width/4,width-2*disp,height-8*disp-width/2);
		gfx.drawLine(width/2,width/4-delta,width/2,height/3);
		gfx.drawLine(width/2,2*height/3,width/2,height-width/4+delta);
		gfx.drawArc(width/4,-width/4-delta,width/2,width/2,193,151);
		gfx.drawArc(width/4,height-width/4+delta,width/2,width/2,13,151);
	}
	
	/**
	 * {@inheritDoc}
	 */
	@Override
	protected void paintOpenState(final Graphics gfx, final int width, final int height) {
		gfx.drawLine(width/2,2*height/3,
				width/2+(int)(height/3*Trigonometry.cos(120.0)),
				2*height/3-(int)(height/3*Trigonometry.sin(120.0)));
	}
	
	/**
	 * {@inheritDoc}
	 */
	@Override
	protected void paintDashedOpenState(final Graphics gfx, final int width, final int height) {
		gfx.setLineStyle(SWT.LINE_DOT);
		gfx.drawLine(width/2,2*height/3,
				width/2+(int)(height/3*Trigonometry.cos(120.0)),
				2*height/3-(int)(height/3*Trigonometry.sin(120.0)));
		gfx.setLineStyle(SWT.LINE_SOLID);
	}
	
	/**
	 * {@inheritDoc}
	 */
	@Override
	protected void paintClosedState(final Graphics gfx, final int width, final int height) {
		gfx.drawLine(width/2,2*height/3,width/2,height/3);
		gfx.drawLine(width/4+width/8,height/3,
				3*width/4-width/8,height/3);
		gfx.fillOval(width/2-this.getLineWidth()*2,2*height/3-this.getLineWidth()*2,
				this.getLineWidth()*4,this.getLineWidth()*4);
	}
	
}