Class WindowUtils

java.lang.Object
com.explodingpixels.widgets.WindowUtils

public class WindowUtils extends Object
Utility methods for dealing with Windows.
  • Constructor Details

    • WindowUtils

      public WindowUtils()
  • Method Details

    • makeWindowNonOpaque

      public static void makeWindowNonOpaque(Window window)
      Try's to make the given Window non-opqaue (transparent) across platforms and JREs. This method is not guaranteed to succeed, and will fail silently if the given Window cannot be made non-opaque.

      This method is useful, for example, when creating a HUD style window that is semi-transparent, and thus doesn't want the window background to be drawn.

      Parameters:
      window - the Window to make non-opaque.
    • createAndInstallRepaintWindowFocusListener

      @Deprecated public static WindowFocusListener createAndInstallRepaintWindowFocusListener(Window window)
      Deprecated.
      Creates and installs a WindowFocusListener on the given Window which calls the Window's repaint() method on focus state changes.
      Parameters:
      window - the Window to repaint on focus state changes.
      Returns:
      the listener installed.
    • isParentWindowFocused

      public static boolean isParentWindowFocused(Component component)
      true if the given Component's has a parent Window (i.e. it's not null) and that Window is currently active (focused).
      Parameters:
      component - the Component to check the parent Window's focus for.
      Returns:
      true if the given Component's parent Window is currently active.
    • installWeakWindowFocusListener

      public static void installWeakWindowFocusListener(JComponent component, WindowFocusListener focusListener)
      Installs a WindowFocusListener on the given JComponent's parent Window. If the JComponent doesn't yet have a parent, then the listener will be installed when the component is added to a container.
      Parameters:
      component - the component who's parent frame to listen to focus changes on.
      focusListener - the WindowFocusListener to notify when focus changes.
    • installJComponentRepainterOnWindowFocusChanged

      public static void installJComponentRepainterOnWindowFocusChanged(JComponent component)
      Installs a listener on the given JComponent's parent Window that repaints the given component when the parent window's focused state changes. If the given component does not have a parent at the time this method is called, then an ancestor listener will be installed that installs a window listener when the components parent changes.
      Parameters:
      component - the JComponent to add the repaint focus listener to.