Package org.jungrapht.visualization.control

Class CrossoverScalingControl

java.lang.Object

org.jungrapht.visualization.control.CrossoverScalingControl

All Implemented Interfaces:

ScalingControl

Direct Known Subclasses:

AbsoluteCrossoverScalingControl

public class CrossoverScalingControl
extends Object
implements ScalingControl

A scaling control that has a crossover point. When the overall scale of the view and model is less than the crossover point, the scaling is applied to the view's transform and the graph vertices, labels, etc grow smaller. This preserves the overall shape of the graph. When the scale is larger than the crossover, the scaling is applied to the graph layout. The graph spreads out, but the vertices and labels grow no larger than their original layoutSize.

Author:

Tom Nelson

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	CrossoverScalingControl.Builder

Nested classes/interfaces inherited from interface org.jungrapht.visualization.control.ScalingControl

ScalingControl.Axis

Field Summary

Fields

Modifier and Type	Field	Description
protected double	crossover	Point where scale crosses over from view to layout.
protected boolean	enableSingleAxisScaling
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
CrossoverScalingControl()

Method Summary

Modifier and Type	Method	Description
protected void	adjustTransformers(double horizontalAmount, double verticalAmount, Point2D at, MutableTransformer layoutTransformer, MutableTransformer viewTransformer, double inverseModelScaleX, double inverseModelScaleY, double inverseViewScaleX, double inverseViewScaleY, Point2D transformedAt, boolean reset, boolean adjustViewTransform)
static CrossoverScalingControl.Builder	builder()
double	getCrossover()
void	reset(VisualizationServer<?,?> vv, Point2D at)
void	scale(VisualizationServer<?,?> vv, double horizontalAmount, double verticalAmount, Point2D at)	zoom the display in or out
void	setCrossover(double crossover)	Sets the crossover point to the specified value.
void	setEnableSingleAxisScaling(boolean enableSingleAxisScaling)
protected boolean	withinScaleBounds(double scaleX, double scaleY, double minScale, double maxScale, double horizontalAmount, double verticalAmount)

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

crossover

protected double crossover

Point where scale crosses over from view to layout.

enableSingleAxisScaling

protected boolean enableSingleAxisScaling

Constructor Detail

CrossoverScalingControl

public CrossoverScalingControl()

Method Detail

builder

public static CrossoverScalingControl.Builder builder()

setCrossover

public void setCrossover(double crossover)

Sets the crossover point to the specified value.

Parameters:

crossover - the crossover point to use (defaults to 1.0)

getCrossover

public double getCrossover()

Returns:

the current crossover value

setEnableSingleAxisScaling

public void setEnableSingleAxisScaling(boolean enableSingleAxisScaling)

scale

public void scale(VisualizationServer<?,?> vv,
                  double horizontalAmount,
                  double verticalAmount,
                  Point2D at)

Description copied from interface: ScalingControl

zoom the display in or out

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

at - where to adjust scale from

adjustTransformers

protected void adjustTransformers(double horizontalAmount,
                                  double verticalAmount,
                                  Point2D at,
                                  MutableTransformer layoutTransformer,
                                  MutableTransformer viewTransformer,
                                  double inverseModelScaleX,
                                  double inverseModelScaleY,
                                  double inverseViewScaleX,
                                  double inverseViewScaleY,
                                  Point2D transformedAt,
                                  boolean reset,
                                  boolean adjustViewTransform)

reset

public void reset(VisualizationServer<?,?> vv,
                  Point2D at)

withinScaleBounds

protected boolean withinScaleBounds(double scaleX,
                                    double scaleY,
                                    double minScale,
                                    double maxScale,
                                    double horizontalAmount,
                                    double verticalAmount)