ViewScalingControl (JunGrapht Visualization 1.1 API)

java.lang.Object
- org.jungrapht.visualization.control.ViewScalingControl

All Implemented Interfaces:

ScalingControl
```
public class ViewScalingControl
extends Object
implements ScalingControl
```
ViewScalingGraphMouse applies a scaling transform to the View of the graph. This causes all elements of the graph to grow larger or smaller. ViewScalingGraphMouse, by default, is activated by the MouseWheel when the control key is pressed. The control key modifier can be overridden in the contstructor.

Author:

Tom Nelson

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class ViewScalingControl.Builder
- Nested classes/interfaces inherited from interface org.jungrapht.visualization.control.ScalingControl
  ScalingControl.Axis

Field Summary

Fields
Modifier and Type Field Description

protected double maxScale

protected double minScale
- Fields inherited from interface org.jungrapht.visualization.control.ScalingControl
  CROSSOVER, ENABLE_SINGLE_AXIS_SCALING, MAX_SCALE, MIN_SCALE

Constructor Summary

Constructors
Constructor Description

ViewScalingControl()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static ViewScalingControl.Builder`	`builder()`
`void`	`scale(VisualizationServer<?,?> vv, double horizontalAmount, double verticalAmount, Point2D from)`	zoom the display in or out, depending on the direction of the mouse wheel motion.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.jungrapht.visualization.control.ScalingControl
scale

- Field Detail
  - minScale
```
protected double minScale
```
  - maxScale
```
protected double maxScale
```
- Constructor Detail
  - ViewScalingControl
```
public ViewScalingControl()
```
- Method Detail
  - builder
```
public static ViewScalingControl.Builder builder()
```
  - scale
```
public void scale(VisualizationServer<?,?> vv,
                  double horizontalAmount,
                  double verticalAmount,
                  Point2D from)
```
    zoom the display in or out, depending on the direction of the mouse wheel motion.
    
    Specified by:
    
    scale in interface ScalingControl
    
    Parameters:
    
    vv - the VisualizationViewer
    
    horizontalAmount - how much to adjust horizontal scale by
    
    verticalAmount - how much to adjust vertical scale by
    
    from - where to adjust scale from