org.piccolo2d.examples.SquiggleExample Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2011, Piccolo2D project, http://piccolo2d.org
* Copyright (c) 1998-2008, University of Maryland
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided
* that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this list of conditions
* and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions
* and the following disclaimer in the documentation and/or other materials provided with the
* distribution.
*
* None of the name of the University of Maryland, the name of the Piccolo2D project, or the names of its
* contributors may be used to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.piccolo2d.examples;
import java.awt.BasicStroke;
import java.awt.event.InputEvent;
import java.awt.geom.Point2D;
import org.piccolo2d.PCanvas;
import org.piccolo2d.PLayer;
import org.piccolo2d.event.PBasicInputEventHandler;
import org.piccolo2d.event.PDragSequenceEventHandler;
import org.piccolo2d.event.PInputEvent;
import org.piccolo2d.event.PInputEventFilter;
import org.piccolo2d.extras.PFrame;
import org.piccolo2d.nodes.PPath;
public class SquiggleExample extends PFrame {
/**
*
*/
private static final long serialVersionUID = 1L;
private PLayer layer;
public SquiggleExample() {
this(null);
}
public SquiggleExample(final PCanvas aCanvas) {
super("SquiggleExample", false, aCanvas);
}
public void initialize() {
super.initialize();
final PBasicInputEventHandler squiggleEventHandler = createSquiggleEventHandler();
squiggleEventHandler.setEventFilter(new PInputEventFilter(InputEvent.BUTTON1_MASK));
getCanvas().removeInputEventListener(getCanvas().getPanEventHandler());
getCanvas().addInputEventListener(squiggleEventHandler);
layer = getCanvas().getLayer();
}
public PBasicInputEventHandler createSquiggleEventHandler() {
return new PDragSequenceEventHandler() {
protected PPath squiggle;
public void startDrag(final PInputEvent e) {
super.startDrag(e);
final Point2D p = e.getPosition();
squiggle = new PPath.Float();
squiggle.moveTo((float) p.getX(), (float) p.getY());
squiggle.setStroke(new BasicStroke((float) (1 / e.getCamera().getViewScale())));
layer.addChild(squiggle);
}
public void drag(final PInputEvent e) {
super.drag(e);
updateSquiggle(e);
}
public void endDrag(final PInputEvent e) {
super.endDrag(e);
updateSquiggle(e);
squiggle = null;
}
public void updateSquiggle(final PInputEvent aEvent) {
final Point2D p = aEvent.getPosition();
squiggle.lineTo((float) p.getX(), (float) p.getY());
}
};
}
public static void main(final String[] args) {
new SquiggleExample();
}
}