1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
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   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
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  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
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  23 
  24 /*
  25   @test
  26   @key headful
  27   @bug 6594131 8186617
  28   @summary Tests the Window.get/setOpacity() methods
  29 */
  30 
  31 import java.awt.AWTException;
  32 import java.awt.Frame;
  33 import java.awt.GraphicsDevice;
  34 import java.awt.GraphicsEnvironment;
  35 import java.awt.Robot;
  36 
  37 public class WindowOpacity {
  38 
  39     public static void main(String[] args) throws Exception {
  40         GraphicsDevice gd =
  41                 GraphicsEnvironment.getLocalGraphicsEnvironment()
  42                         .getDefaultScreenDevice();
  43         if (!gd.isWindowTranslucencySupported(
  44                 GraphicsDevice.WindowTranslucency.TRANSLUCENT)) {
  45             System.out.println(
  46                     "Either the Toolkit or the native system does not support"
  47                             + " controlling the window opacity level.");
  48             return;
  49         }
  50         Frame f = new Frame("Opacity test");
  51         try {
  52             test(f);
  53         } finally {
  54             f.dispose();
  55         }
  56     }
  57 
  58     private static void test(final Frame f) throws AWTException {
  59         boolean passed;
  60 
  61         f.setUndecorated(true);
  62         float curOpacity = f.getOpacity();
  63         if (curOpacity < 1.0f || curOpacity > 1.0f) {
  64             throw new RuntimeException(
  65                     "getOpacity() reports the initial opacity level "
  66                             + "other than 1.0: " + curOpacity);
  67         }
  68 
  69 
  70         passed = false;
  71         try {
  72             f.setOpacity(-0.5f);
  73         } catch (IllegalArgumentException e) {
  74             passed = true;
  75         }
  76         if (!passed) {
  77             throw new RuntimeException(
  78                     "setOpacity() allows passing negative opacity level.");
  79         }
  80 
  81 
  82         passed = false;
  83         try {
  84             f.setOpacity(1.5f);
  85         } catch (IllegalArgumentException e) {
  86             passed = true;
  87         }
  88         if (!passed) {
  89             throw new RuntimeException(
  90                     "setOpacity() allows passing opacity level greater than 1.0.");
  91         }
  92 
  93 
  94         f.setOpacity(0.5f);
  95         curOpacity = f.getOpacity();
  96         if (curOpacity < 0.5f || curOpacity > 0.5f) {
  97             throw new RuntimeException(
  98                     "setOpacity() reports the opacity level that "
  99                             + "differs from the value set with "
 100                             + "setWindowOpacity: " + curOpacity);
 101         }
 102 
 103 
 104         f.setOpacity(0.75f);
 105         curOpacity = f.getOpacity();
 106         if (curOpacity < 0.75f || curOpacity > 0.75f) {
 107             throw new RuntimeException(
 108                     "getOpacity() reports the opacity level that "
 109                             + "differs from the value set with "
 110                             + "setWindowOpacity the second time: "
 111                             + curOpacity);
 112         }
 113 
 114 
 115         f.setBounds(100, 100, 300, 200);
 116         f.setVisible(true);
 117         Robot robot = new Robot();
 118         robot.waitForIdle();
 119 
 120         curOpacity = f.getOpacity();
 121         if (curOpacity < 0.75f || curOpacity > 0.75f) {
 122             throw new RuntimeException(
 123                     "getOpacity() reports the opacity level that "
 124                             + "differs from the value set with "
 125                             + "setWindowOpacity before showing the frame: "
 126                             + curOpacity);
 127         }
 128         f.setOpacity(0.5f);
 129         robot.waitForIdle();
 130         curOpacity = f.getOpacity();
 131         if (curOpacity < 0.5f || curOpacity > 0.5f) {
 132             throw new RuntimeException(
 133                     "getOpacity() reports the opacity level that "
 134                             + "differs from the value set with "
 135                             + "setWindowOpacity after showing the frame: "
 136                             + curOpacity);
 137         }
 138     }
 139 }