org.opensourcephysics.display
Class DrawingPanel.ZoomBox

java.lang.Object
  org.opensourcephysics.display.DrawingPanel.ZoomBox

Enclosing class:

DrawingPanel

public class DrawingPanel.ZoomBox
extends java.lang.Object

ZoomBox creates an on-screen rectangle using XORMode for fast redrawing.

Constructor Summary

DrawingPanel.ZoomBox()

Method Summary

void	drag(int xpix, int ypix) Drags the corner of the ZoomBox.
void	hide() Hides the zoom box.
java.awt.geom.Rectangle2D.Double	reportZoom(int xpix, int ypix) Hides the zoom box and reports the rectangle selected.
void	startZoom(int xpix, int ypix) Starts the zoom by saving the corner location.

Methods inherited from class java.lang.Object

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

Constructor Detail

DrawingPanel.ZoomBox

public DrawingPanel.ZoomBox()

Method Detail

startZoom

public void startZoom(int xpix,
                      int ypix)

Starts the zoom by saving the corner location.

Parameters:

xpix -

ypix -

hide

public void hide()

Hides the zoom box.

drag

public void drag(int xpix,
                 int ypix)

Drags the corner of the ZoomBox. Drag uses XORMode drawing to first erase and then repaint the box.

Parameters:

xpix -

ypix -

reportZoom

public java.awt.geom.Rectangle2D.Double reportZoom(int xpix,
                                                   int ypix)

Hides the zoom box and reports the rectangle selected.