info.monitorenter.gui.chart.rangepolicies
Class RangePolicyMinimumViewport

java.lang.Object
  info.monitorenter.gui.chart.rangepolicies.ARangePolicy
      info.monitorenter.gui.chart.rangepolicies.RangePolicyMinimumViewport

All Implemented Interfaces:

IRangePolicy, java.io.Serializable

Direct Known Subclasses:

RangePolicyForcedPoint

public class RangePolicyMinimumViewport
extends ARangePolicy

A IRangePolicy implementation that guarantees a minimum displayed range (viewport) but will stretch if values of the corresponding Chart2D exceeds these constructor given bounds.

To sum up the policy of this implementation this IRangePolicy

1. Guarantees to always display the constructor given range.
2. Guarantees to always display every value within the Chart2D (every TracePoint2D of the chart's ITrace2D instances).

Version:

$Revision: 1.6 $

Author:

Achim Westermann

See Also:

Serialized Form

Field Summary

Fields inherited from class info.monitorenter.gui.chart.rangepolicies.ARangePolicy

m_propertyChangeSupport

Fields inherited from interface info.monitorenter.gui.chart.IRangePolicy

PROPERTY_RANGE, PROPERTY_RANGE_MAX, PROPERTY_RANGE_MIN

Constructor Summary

RangePolicyMinimumViewport(Range range)
Constructs an instance that will always ensure that the given range will be displayed.

Method Summary

double	getMax(double chartMin, double chartMax) Returns the maximum of the chart or of the internal range if greater.
double	getMin(double chartMin, double chartMax) Define the lower bound of the Chart2D's value range.

Methods inherited from class info.monitorenter.gui.chart.rangepolicies.ARangePolicy

addPropertyChangeListener, equals, firePropertyChange, getPropertyChangeListeners, getRange, hashCode, removePropertyChangeListener, removePropertyChangeListener, setRange

Methods inherited from class java.lang.Object

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

Constructor Detail

RangePolicyMinimumViewport

public RangePolicyMinimumViewport(Range range)

Constructs an instance that will always ensure that the given range will be displayed.

Parameters:

range - the range that always should be visible.

Method Detail

getMax

public double getMax(double chartMin,
                     double chartMax)

Returns the maximum of the chart or of the internal range if greater.

Parameters:

chartMin - ignored.

chartMax - returned if greater than the value of the internal range.

Returns:

Math.max(this.range.getMax(), chartMax).

See Also:

IRangePolicy.getMax(double, double)

getMin

public double getMin(double chartMin,
                     double chartMax)

Description copied from interface: IRangePolicy

Define the lower bound of the Chart2D's value range. Depends on the AAxis this instance is bound to.

Parameters:

chartMin - the minimum value of the connected Chart2D that may / should be taken into account.

chartMax - the maximum value of the connected Chart2D that may / should be taken into account.

Returns:

the minimum value (lower bound) for the Chart2D to display.

See Also:

IRangePolicy.getMin(double, double)