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  1. JDK
  2. JDK-8072069

Toolkit.getScreenInsets() doesn't update if insets change

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    • b54

        toolkit.getScreenInsets() is used by clients in conjunction with screen
        bounds to position components on screen so they do not overlap the dock or
        task bar.
        However, if the dock location changes when the component is up, the insets
        retrieved by this call do not reflect the new reality.

        Test case:
        Run the following code. Press the button that appears on screen and note the
        insets.
        With the app still running, change the dock position in the OS
        Press the button again. The insets do not reflect the location of the dock.

        Restart app, the insets are now updated.

        import java.awt.Toolkit;
        import javax.swing.JButton;
        import javax.swing.JFrame;

        public class DockUpdate {

            public static void main(String[] args) {

                JButton button = new JButton();
                button.addActionListener((evt) ->
                        
        System.out.println(Toolkit.getDefaultToolkit().getScreenInsets(
                                button.getGraphicsConfiguration())));
                
                JFrame frame = new JFrame();
                frame.add(button);
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setSize(50, 50);
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        }

              anashaty Anton Nashatyrev (Inactive)
              shadowbug Shadow Bug
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                Created:
                Updated:
                Resolved: