/*
 * Copyright (c) 2008-2009, 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 edu.umd.cs.piccolo.examples;

import java.awt.BasicStroke;
import java.awt.Color;

import edu.umd.cs.piccolo.PCanvas;
import edu.umd.cs.piccolo.event.PBasicInputEventHandler;
import edu.umd.cs.piccolo.event.PInputEvent;
import edu.umd.cs.piccolo.nodes.PPath;
import edu.umd.cs.piccolo.util.PDimension;
import edu.umd.cs.piccolox.PFrame;
import edu.umd.cs.piccolox.handles.PBoundsHandle;
import edu.umd.cs.piccolox.handles.PHandle;
import edu.umd.cs.piccolox.util.PNodeLocator;

/**
 * This example show how to add the default handles to a node, and also how to
 * create your own custom handles.
 */
public class HandleExample extends PFrame {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    public HandleExample() {
        this(null);
    }

    public HandleExample(final PCanvas aCanvas) {
        super("HandleExample", false, aCanvas);
    }

    public void initialize() {
        final PPath n = PPath.createRectangle(0, 0, 100, 80);

        // add another node the the root as a reference point so that we can
        // tell that our node is getting dragged, as opposed the the canvas
        // view being panned.
        getCanvas().getLayer().addChild(PPath.createRectangle(0, 0, 100, 80));

        getCanvas().getLayer().addChild(n);

        // tell the node to show its default handles.
        PBoundsHandle.addBoundsHandlesTo(n);

        // The default PBoundsHandle implementation doesn't work well with
        // PPaths that have strokes. The reason for this is that the default
        // PBoundsHandle modifies the bounds of an PNode, but when adding
        // handles to a PPath we really want it to be modifying the underlying
        // geometry of the PPath, the shape without the stroke. The solution is
        // that we need to create handles specific to PPaths that locate
        // themselves on the paths internal geometry, not the external bounds
        // geometry...

        n.setStroke(new BasicStroke(10));
        n.setPaint(Color.green);

        // Here we create our own custom handle. This handle is located in the
        // center of its parent node and you can use it to drag the parent
        // around. This handle also updates its color when the is
        // pressed/released in it.
        final PHandle h = new PHandle(new PNodeLocator(n)) {
            /**
             * 
             */
            private static final long serialVersionUID = 1L;

            // the default locator locates the center of a node.
            public void dragHandle(final PDimension aLocalDimension, final PInputEvent aEvent) {
                localToParent(aLocalDimension);
                getParent().translate(aLocalDimension.getWidth(), aLocalDimension.getHeight());
            }
        };

        h.addInputEventListener(new PBasicInputEventHandler() {
            public void mousePressed(final PInputEvent aEvent) {
                h.setPaint(Color.YELLOW);
            }

            public void mouseReleased(final PInputEvent aEvent) {
                h.setPaint(Color.RED);
            }
        });

        // make this handle appear a bit different then the default handle
        // appearance.
        h.setPaint(Color.RED);
        h.setBounds(-10, -10, 20, 20);

        // also add our new custom handle to the node.
        n.addChild(h);
    }

    public static void main(final String[] args) {
        new HandleExample();
    }
}