/*
 * Copyright (c) 2010, 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package test.javafx.scene;

import test.com.sun.javafx.test.TransformHelper;
import javafx.scene.transform.Transform;
import javafx.scene.transform.Translate;
import javafx.scene.shape.Rectangle;
import javafx.beans.Observable;
import javafx.beans.InvalidationListener;
import javafx.scene.Node;
import org.junit.Test;
import static org.junit.Assert.*;

public class Node_LocalToParentTransform_Test {
    private boolean notified;

    @Test
    public void notTransformedNodeShouldReturnIdentity() {
        Node n = new Rectangle(20, 20);
        TransformHelper.assertMatrix(n.getLocalToParentTransform(),
                1, 0, 0, 0,
                0, 1, 0, 0,
                0, 0, 1, 0);
    }

    @Test
    public void shouldConsiderBothTransformListAndConvenientTransforms() {
        Node n = new Rectangle(20, 20);

        n.setTranslateX(10);
        n.setScaleY(10);
        n.getTransforms().add(new Translate(5, 6));

        TransformHelper.assertMatrix(n.getLocalToParentTransform(),
                1,  0, 0,  15,
                0, 10, 0, -30,
                0,  0, 1,   0);
    }

    @Test
    public void shouldBeUpToDate() {
        Node n = new Rectangle(20, 20);

        n.setTranslateX(10);

        TransformHelper.assertMatrix(n.getLocalToParentTransform(),
                1, 0, 0, 10,
                0, 1, 0, 0,
                0, 0, 1, 0);

        n.setTranslateX(20);

        TransformHelper.assertMatrix(n.getLocalToParentTransform(),
                1, 0, 0, 20,
                0, 1, 0,  0,
                0, 0, 1,  0);
    }

    @Test
    public void shouldBeNotifiedWhenNodeTransforms() {
        final Node n = new Rectangle(20, 20);
        n.localToParentTransformProperty().addListener(o -> {
            if (!notified) {
                notified = true;
                TransformHelper.assertMatrix(n.getLocalToParentTransform(),
                    1, 0, 0, 10,
                    0, 1, 0, 20,
                    0, 0, 1,  0);
            }
        });

        notified = false;
        n.getTransforms().add(new Translate(10, 20));
        assertTrue(notified);

        n.getTransforms().clear();
        n.getTransforms().add(new Translate(10, 0));
        n.getLocalToParentTransform();

        notified = false;
        n.setTranslateY(20);
        assertTrue(notified);
    }

    @Test
    public void shouldNotBeReusedWhenReferenceGivenToUser() {
        final Node n = new Rectangle(20, 20);

        n.setTranslateX(200);
        Transform t1 = n.getLocalToParentTransform();
        TransformHelper.assertMatrix(t1,
                1, 0, 0, 200,
                0, 1, 0, 0,
                0, 0, 1, 0);

        n.setTranslateX(300);
        Transform t2 = n.getLocalToParentTransform();
        TransformHelper.assertMatrix(t2,
                1, 0, 0, 300,
                0, 1, 0, 0,
                0, 0, 1, 0);

        assertFalse(t1 == t2);
        TransformHelper.assertMatrix(t1,
                1, 0, 0, 200,
                0, 1, 0, 0,
                0, 0, 1, 0);
    }
}