File: NodeTest.java

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import java.awt.Color;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.util.ArrayList;

import junit.framework.TestCase;

import edu.umd.cs.piccolo.PNode;
import edu.umd.cs.piccolo.event.PBasicInputEventHandler;
import edu.umd.cs.piccolo.util.PAffineTransform;
import edu.umd.cs.piccolo.util.PBounds;
import edu.umd.cs.piccolo.util.PDimension;

public class NodeTest extends TestCase {

	public NodeTest(String name) {
		super(name);
	}
	
	public void setUp() {
	}
	
	public void testCenterBaseBoundsOnPoint() {
		PNode aNode = new PNode();

		aNode.setBounds(100, 300, 100, 80);
		aNode.centerBoundsOnPoint(0, 0);
		assertEquals(-50, aNode.getBoundsReference().getX(), 0);
		assertEquals(-40, aNode.getBoundsReference().getY(), 0);
	}
		
	public void testClientProperties() {
		PNode n = new PNode();
		
		assertNull(n.getAttribute(null));
		n.addAttribute("a", "b");
		assertEquals(n.getAttribute("a"), "b");
		assertNull(n.getAttribute(null));
		n.addAttribute("a", null);
		assertNull(n.getAttribute("a"));
	}
	
	public void testFullScale() {
		PNode aParent = new PNode();
		PNode aNode = new PNode();

		aParent.addChild(aNode);

		aParent.scale(2.0);
		aNode.scale(0.5);

		
		assertEquals(1.0, aNode.getGlobalScale(), 0);

		aParent.setScale(1.0);
		assertEquals(0.5, aNode.getGlobalScale(), 0);

		aNode.setScale(.75);
		assertEquals(0.75, aNode.getGlobalScale(), 0);
	}
	
	public void testReparent() {
		PNode aParent = new PNode();
		PNode aNode = new PNode();

		aParent.setOffset(400, 500);
		aParent.scale(0.5);
		aNode.reparent(aParent);
		
		assertEquals(0, aNode.getGlobalTranslation().getX(), 0);
		assertEquals(0, aNode.getGlobalTranslation().getY(), 0);
		assertEquals(2.0, aNode.getScale(), 0);
		
		aNode.setGlobalScale(0.25);
		aNode.setGlobalTranslation(new Point2D.Double(10, 10));
		
		assertEquals(10, aNode.getGlobalTranslation().getX(), 0);
		assertEquals(10, aNode.getGlobalTranslation().getY(), 0);
		assertEquals(0.25, aNode.getGlobalScale(), 0);
	}
	
	public void testFindIntersectingNodes() {
		PNode n = new PNode();
		PNode c = new PNode();

		n.addChild(c);
		n.setBounds(0, 0, 100, 100);
		c.setBounds(0, 0, 100, 100);
		c.scale(200);
		
		ArrayList found = new ArrayList();
		Rectangle2D rect2d = new Rectangle2D.Double(50, 50, 10, 10);
		n.findIntersectingNodes(rect2d, found);
		
		assertEquals(found.size(), 2);
		assertEquals(rect2d.getHeight(), 10, 0);
		found = new ArrayList();
		
		PBounds bounds = new PBounds(50, 50, 10, 10);
		n.findIntersectingNodes(bounds, found);

		assertEquals(found.size(), 2);
		assertEquals(bounds.getHeight(), 10, 0);
	}
	
	public void testRemoveNonexistantListener() {
		PNode n = new PNode();
		n.removeInputEventListener(new PBasicInputEventHandler());
	}
	
	public void testAddChild() {
		PNode p = new PNode();
		PNode c = new PNode();
		
		p.addChild(c);
		p.addChild(new PNode());
		p.addChild(new PNode());
		
		p.addChild(c);
		assertEquals(c, p.getChild(2));

		p.addChild(0, c);
		assertEquals(c, p.getChild(0)); 
		
		p.addChild(1, c);
		assertEquals(c, p.getChild(1)); 

		p.addChild(2, c);
		assertEquals(c, p.getChild(2)); 		
	}
	
	public void testCopy() {
		PNode aNode = new PNode();		
		aNode.setPaint(Color.yellow);

		PNode aChild = new PNode();
		aNode.addChild(aChild);
				
		aNode = (PNode) aNode.clone();
		
		assertEquals(aNode.getPaint(), Color.yellow);
		assertEquals(aNode.getChildrenCount(), 1);
	}

	public void testLocalToGlobal() {
		PNode aParent = new PNode();
		PNode aChild = new PNode(); 	

		aParent.addChild(aChild);
		aChild.scale(0.5);

		// bounds
		PBounds bnds = new PBounds(0, 0, 50, 50);
		
		aChild.localToGlobal(bnds);
		assertEquals(0, bnds.x, 0);
		assertEquals(0, bnds.y, 0);
		assertEquals(25, bnds.width, 0);
		assertEquals(25, bnds.height, 0);

		aChild.globalToLocal(bnds);
		assertEquals(0, bnds.x, 0);
		assertEquals(0, bnds.y, 0);
		assertEquals(50, bnds.width, 0);
		assertEquals(50, bnds.height, 0);

		aChild.getGlobalToLocalTransform(new PAffineTransform());
		aChild.getLocalToGlobalTransform(new PAffineTransform()).createTransformedShape(aChild.getBounds());

		// dimensions	
		PDimension dim = new PDimension(50, 50);

		aChild.localToGlobal(dim);
		assertEquals(25, dim.getHeight(), 0);
		assertEquals(25, dim.getWidth(), 0);

	
		aChild.globalToLocal(dim);
		assertEquals(50, dim.getHeight(), 0);
		assertEquals(50, dim.getWidth(), 0);
	}
	
	public void testToString() {
		PNode a = new PNode();
		PNode b = new PNode();
		PNode c = new PNode();
		PNode d = new PNode();
		PNode e = new PNode();
		PNode f = new PNode();

		a.translate(100, 100);
		a.getFullBoundsReference();
		
		a.addChild(b);
		b.addChild(c);
		c.addChild(d);
		d.addChild(e);
		e.addChild(f);
		
		System.out.println(a.toString());
	}
	
	public void testRecursiveLayout() {
		PNode layoutNode1 = new PNode() {
			protected void layoutChildren() {
				if (getChildrenCount() > 0) {
					getChild(0).setOffset(1, 0);
				}
			}
		};

		PNode layoutNode2 = new PNode() {
			protected void layoutChildren() {
				if (getChildrenCount() > 0) {
					getChild(0).setOffset(1, 0);
				}
			}
		};
		
		layoutNode1.addChild(layoutNode2);
		
		PNode n = new PNode();
		n.setBounds(0, 0, 100, 100);
		
		layoutNode2.addChild(n);
		
		n.setBounds(10, 10, 100, 100);
		
		layoutNode1.getFullBoundsReference();
	}
}