de.lmu.ifi.dbs.elki.visualization.batikutil
Class LazyCanvasResizer

java.lang.Object
  java.awt.event.ComponentAdapter
      de.lmu.ifi.dbs.elki.visualization.batikutil.LazyCanvasResizer

All Implemented Interfaces:

ComponentListener, EventListener

public abstract class LazyCanvasResizer
extends ComponentAdapter

Class to lazily process canvas resize events by applying a threshold.

Author:

Erich Schubert

Field Summary

(package private) double	activeRatio Last ratio of the Canvas applied
(package private) Component	component Component the ratio applies to.
static double	DEFAULT_THRESHOLD Default threshold for resizing.
(package private) double	threshold Active threshold

Constructor Summary

LazyCanvasResizer(Component component)
Simplified constructor using the default threshold DEFAULT_THRESHOLD

LazyCanvasResizer(Component component, double threshold)
Full constructor.

Method Summary

void	componentResized(ComponentEvent e) React to a component resize event.
abstract void	executeResize(double newratio) Callback function that needs to be overridden with actual implementations.
double	getActiveRatio() Get the components last applied ratio.
double	getCurrentRatio() Get the components current ratio.

Methods inherited from class java.awt.event.ComponentAdapter

componentHidden, componentMoved, componentShown

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_THRESHOLD

public static final double DEFAULT_THRESHOLD

Default threshold for resizing.

See Also:

Constant Field Values

threshold

double threshold

Active threshold

activeRatio

double activeRatio

Last ratio of the Canvas applied

component

Component component

Component the ratio applies to.

Constructor Detail

LazyCanvasResizer

public LazyCanvasResizer(Component component,
                         double threshold)

Full constructor.

Parameters:

component - Component to track

threshold - Threshold

LazyCanvasResizer

public LazyCanvasResizer(Component component)

Simplified constructor using the default threshold DEFAULT_THRESHOLD

Parameters:

component - Component to track.

Method Detail

componentResized

public void componentResized(ComponentEvent e)

React to a component resize event.

Specified by:

componentResized in interface ComponentListener

Overrides:

componentResized in class ComponentAdapter

getCurrentRatio

public final double getCurrentRatio()

Get the components current ratio.

Returns:

Current ratio.

executeResize

public abstract void executeResize(double newratio)

Callback function that needs to be overridden with actual implementations.

Parameters:

newratio - New ratio to apply.

getActiveRatio

public double getActiveRatio()

Get the components last applied ratio.

Returns:

Last applied ratio.