info.monitorenter.gui.chart.rangepolicies.RangePolicyHighestValues Maven / Gradle / Ivy
Show all versions of jchart2d Show documentation
/*
* RangePolicyHighestValues.java, points only the highest given values given.
* Copyright (c) 2007 - 2011 Achim Westermann, [email protected]
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* If you modify or optimize the code in a useful way please let me know.
* [email protected]
*/
package info.monitorenter.gui.chart.rangepolicies;
import info.monitorenter.util.Range;
/**
* Range policy implementation that will force a viewport that only shows the
* highest values that are in the range of maximum - x.
*
*
* @author zoola
*
* @author Achim Westermann
*
* @version $Revision: 1.8 $
*
*/
public final class RangePolicyHighestValues extends ARangePolicy {
/** Generated serialVersionUID. */
private static final long serialVersionUID = 3966377720997931343L;
/** The value range for the highest values to show. */
private final double m_highestValueRangeToShow;
/**
* Creates a range policy with an unconfigured range (
* {@link Range#RANGE_UNBOUNDED}) that will show the 50 hightest values.
*
*/
public RangePolicyHighestValues() {
this(50);
}
/**
* Creates a range policy with an unconfigured range (
* {@link Range#RANGE_UNBOUNDED}) that will show the given amount of highest
* values.
*
*
* @param amountHighestValues
* the amount of highest values to show.
*/
public RangePolicyHighestValues(final int amountHighestValues) {
super();
this.m_highestValueRangeToShow = amountHighestValues;
}
/**
* Constructor with a range and the value range for the highest values to show
* only.
*
*
* @param range
* unused, maximum bound is always returned.
*
* @param highestValueRangeToShow
* the value range for the highest values to show.
*/
public RangePolicyHighestValues(final Range range, final double highestValueRangeToShow) {
super(range);
this.m_highestValueRangeToShow = highestValueRangeToShow;
}
/**
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (!super.equals(obj)) {
return false;
}
if (this.getClass() != obj.getClass()) {
return false;
}
final RangePolicyHighestValues other = (RangePolicyHighestValues) obj;
if (Double.doubleToLongBits(this.m_highestValueRangeToShow) != Double
.doubleToLongBits(other.m_highestValueRangeToShow)) {
return false;
}
return true;
}
/**
* Returns the maximum of the chart always.
*
*
* @return Returns the maximum of the chart always.
*
* @param chartMin
* ignored.
*
* @param chartMax
* returned always.
*
* @see info.monitorenter.gui.chart.IRangePolicy#getMax(double, double)
*/
public double getMax(final double chartMin, final double chartMax) {
return chartMax;
}
/**
* Returns the maximum of the chart - interal highestValueRangeToShow or
* chartMin if greater.
*
*
*
* @param chartMin
* used for return value if chartMax - highestValuesToShow is smaller
* than this minimum of the chart.
*
* @param chartMax
* upper bound to compute down to the start of the latest highest
* values.
*
* @return the maximum of the chart - interal highestValueRangeToShow or
* chartMin if greater.
*
* @see info.monitorenter.gui.chart.IRangePolicy#getMin(double, double)
*/
public double getMin(final double chartMin, final double chartMax) {
return Math.max(chartMax - this.m_highestValueRangeToShow, chartMin);
}
/**
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
final int prime = 31;
int result = super.hashCode();
long temp;
temp = Double.doubleToLongBits(this.m_highestValueRangeToShow);
result = prime * result + (int) (temp ^ (temp >>> 32));
return result;
}
}