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 
24 import java.awt.*;
25 import java.awt.image.BufferedImage;
26 import java.io.File;
27 import java.io.IOException;
28 import javax.imageio.ImageIO;
29 import javax.swing.*;
30 import javax.swing.tree.DefaultMutableTreeNode;
31 import 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  */
39 public class TreeClipTest {
40 
41     static boolean passed = true;
42 
checkImage(BufferedImage img, int clipY)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 
main(String[] args)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 }