Question

The BasicArrowButton is a class is part of the Java SE. The BasicArrowButton Displays a Single Arrow Head in a specified direction. I want to override the class, preserving the existing methods but having the Basic Arrow Button display a double arrowhead instead of a single arrowhead. For Example See the following URL http://www.tiresias.org/images/ff.jpg. All I’m looking to do is to change the way this icon is drawn.

Thank you,

Answer 1

subclass BasicArrowButton and override paintTriangle. You can try recalling BasicArrowButton‘s paintTriangle method twice to get the triangles. For example:

public static class Bidriectional extends BasicArrowButton {
  private static final long serialVersionUID = 1L;

  public Bidriectional() {
   // This does not matter, we'll override it anyways.
   super(SwingConstants.NORTH);
  }

  @Override
  public void paintTriangle(Graphics g, int x, int y, int size,
    int direction, boolean isEnabled) {

   super.paintTriangle(g, x - (size / 2), y, size, SwingConstants.EAST, isEnabled);
   super.paintTriangle(g, x + (size / 2), y, size, SwingConstants.EAST, isEnabled);
  }
 }

Should give you a button looking something like this:

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