1 /**
   2  * Copyright (c) 2013, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 import java.awt.*;
  27 import java.awt.event.*;
  28 
  29 public class MyCanvas extends Canvas {
  30 
  31     static {
  32         try {
  33             System.loadLibrary("mylib");
  34         } catch (Throwable t) {
  35             System.out.println("Test failed!!");
  36             t.printStackTrace();
  37             System.exit(1);
  38         }
  39     }
  40 
  41     public native void paint(Graphics g);
  42 
  43     public static void main(String[] args) {
  44         try {
  45             Robot robot = new Robot();
  46             Frame f = new Frame();
  47             f.setBounds(0, 0, 100, 100);
  48             f.add(new MyCanvas());
  49             f.addWindowListener(new WindowAdapter() {
  50                 public void windowClosing(WindowEvent ev) {
  51                     System.exit(0);
  52                 }
  53             });
  54             f.setVisible(true);
  55             robot.delay(5000);
  56             Color col1 = new Color(0, 0, 0);
  57             Color col2 = robot.getPixelColor(f.getX()+50, f.getY()+50);
  58             if (col1.equals(col2)) {
  59                 System.out.println("Test passed!");
  60             } else {
  61                 throw new RuntimeException("Color of JAWT canvas is wrong or " +
  62                         "it was not rendered. " + "Check that other windows " +
  63                         "do not block the test frame.");
  64             }
  65             System.exit(0);
  66         } catch (Throwable t) {
  67             System.out.println("Test failed!");
  68             t.printStackTrace();
  69             System.exit(1);
  70         }
  71     }
  72 }