Interface DialLayer

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      void addChangeListener​(DialLayerChangeListener listener)
      Registers a listener with this layer, so that it receives notification of changes to this layer.
      void draw​(java.awt.Graphics2D g2, DialPlot plot, java.awt.geom.Rectangle2D frame, java.awt.geom.Rectangle2D view)
      Draws the content of this layer.
      boolean hasListener​(java.util.EventListener listener)
      Returns true if the specified listener is currently registered with the this layer.
      boolean isClippedToWindow()
      Returns true if the drawing should be clipped to the dial window (which is defined by the DialFrame), and false otherwise.
      boolean isVisible()
      Returns a flag that indicates whether or not the layer is visible.
      void removeChangeListener​(DialLayerChangeListener listener)
      Deregisters a listener, so that it no longer receives notification of changes to this layer.
    • Method Detail

      • isVisible

        boolean isVisible()
        Returns a flag that indicates whether or not the layer is visible.
        Returns:
        A boolean.
      • addChangeListener

        void addChangeListener​(DialLayerChangeListener listener)
        Registers a listener with this layer, so that it receives notification of changes to this layer.
        Parameters:
        listener - the listener.
      • removeChangeListener

        void removeChangeListener​(DialLayerChangeListener listener)
        Deregisters a listener, so that it no longer receives notification of changes to this layer.
        Parameters:
        listener - the listener.
      • hasListener

        boolean hasListener​(java.util.EventListener listener)
        Returns true if the specified listener is currently registered with the this layer.
        Parameters:
        listener - the listener.
        Returns:
        A boolean.
      • isClippedToWindow

        boolean isClippedToWindow()
        Returns true if the drawing should be clipped to the dial window (which is defined by the DialFrame), and false otherwise.
        Returns:
        A boolean.
      • draw

        void draw​(java.awt.Graphics2D g2,
                  DialPlot plot,
                  java.awt.geom.Rectangle2D frame,
                  java.awt.geom.Rectangle2D view)
        Draws the content of this layer.
        Parameters:
        g2 - the graphics target (null not permitted).
        plot - the plot (typically this should not be null, but for a layer that doesn't need to reference the plot, it may be permitted).
        frame - the reference frame for the dial's geometry (null not permitted). This is typically larger than the visible area of the dial (see the next parameter).
        view - the visible area for the dial (null not permitted).