io.jbotsim.ui.painting

Class UIComponent

java.lang.Object

io.jbotsim.ui.painting.UIComponent

public class UIComponent
extends Object

The UIComponent contains a platform-dependent object to be used for displaying graphical elements.

Its sole member is a simple Object. The typical usage is:

1. wrap the system UI component (say View) in the UIComponent when a (re)draw is prompted by the system;
2. pass this UIComponent to the object able draw on it;
3. in this object, cast the result of getComponent() back to the system UI component type (View) and use it normally, see DefaultBackgroundPainter example below.

  

 public class DefaultBackgroundPainter implements BackgroundPainter {
     
     public void paintBackground(UIComponent uiComponent, Topology tp) {
         Graphics2D g2d = (Graphics2D) uiComponent.getComponent();
         g2d.setStroke(new BasicStroke(1));
         for (Node n : tp.getNodes()) {
             double sR = n.getSensingRange();
             if (sR > 0) {
                 g2d.setColor(Color.gray);
                 g2d.drawOval((int) n.getX() - (int) sR, (int) n.getY() - (int) sR, 2 * (int) sR, 2 * (int) sR);
             }
         }
     }
  }
 
 

Constructor Summary

Constructors

Constructor and Description
UIComponent(Object component) Creates a UIComponent by wrapping the provided system Object

Method Summary

Modifier and Type	Method and Description
Object	getComponent() Gets the Object that has been provided upon creation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

UIComponent

public UIComponent(Object component)

Creates a UIComponent by wrapping the provided system Object

Parameters:

component - the Object to be wrapped

Method Detail

getComponent

public Object getComponent()

Gets the Object that has been provided upon creation.

Returns:

the component, as an Object to be cast