1/*
2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24import java.awt.*;
25import java.awt.image.BufferedImage;
26import java.io.File;
27import java.io.IOException;
28import javax.imageio.ImageIO;
29import javax.swing.*;
30import javax.swing.tree.DefaultMutableTreeNode;
31import javax.swing.tree.DefaultTreeModel;
32
33/*
34 * @test
35 * @bug 8072676
36 * @summary Checks if the tree painter doesn't expand existing clip
37 * @author Anton Nashatyrev
38 */
39public class TreeClipTest {
40
41    static boolean passed = true;
42
43    static boolean checkImage(BufferedImage img, int clipY) {
44        for (int y = clipY; y < img.getHeight(); y++) {
45            for (int x = 0; x < img.getWidth(); x++) {
46                if ((img.getRGB(x,y) & 0xFFFFFF) != 0xFFFFFF) {
47                    return false;
48                }
49            }
50        }
51        return true;
52    }
53
54    public static void main(String[] args) throws Exception {
55        SwingUtilities.invokeAndWait(new Runnable() {
56            @Override
57            public void run() {
58                DefaultMutableTreeNode      root = new DefaultMutableTreeNode("JTree");
59                DefaultMutableTreeNode      parent;
60
61                parent = new DefaultMutableTreeNode("colors");
62                root.add(parent);
63                parent.add(new DefaultMutableTreeNode("blue"));
64                DefaultTreeModel model = new DefaultTreeModel(root);
65                JTree tree = new JTree(model);
66
67                BufferedImage img = new BufferedImage(50, 50, BufferedImage.TYPE_INT_ARGB);
68                for (int clipY = 1; clipY < 50; clipY++) {
69                    Graphics2D ig = img.createGraphics();
70                    ig.setColor(Color.WHITE);
71                    ig.fillRect(0,0,1000, 1000);
72                    tree.setSize(200,200);
73                    ig.setClip(0,0,1000,clipY);
74                    tree.paint(ig);
75                    ig.dispose();
76
77                    if (!checkImage(img, clipY)) {
78                        System.err.println("Failed with clipY=" + clipY);
79                        passed = false;
80                        try {
81                            ImageIO.write(img, "PNG", new File("failedResult.png"));
82                        } catch (IOException e) {
83                            e.printStackTrace();
84                        }
85                        return;
86                    }
87                }
88            }
89        });
90
91        if (!passed) {
92            throw new RuntimeException("Test failed.");
93        } else {
94            System.out.println("Passed.");
95        }
96    }
97}
98