/**
*
* The MIT License
*
* Copyright (c) 2011 the original author or authors.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.googlecode.charts4j;
import static com.googlecode.charts4j.collect.Preconditions.*;
import java.util.List;
import com.googlecode.charts4j.collect.ImmutableList;
import com.googlecode.charts4j.collect.Lists;
import com.googlecode.charts4j.parameters.ChartType;
/**
*
* Google-o-meter constructed with the {@link GCharts} static factory class.
*
* A Google-o-meter looks a bit like a speedometer dial. The range is from 0 to
* 100. Colors are interpolated from red to green by default. You can provide
* your own color gradient. The arrow can have a label and a legend.
*
* @author Julien Chastang (julien.c.chastang at gmail dot com)
*
* @see GCharts
*/
public class GoogleOMeter extends AbstractGraphChart {
/** Data to be plotted. **/
private final double data;
/** Colors to be rendered in this chart. **/
private final ImmutableList<Color> colors;
/** Label that will sit atop the arrow. **/
private final String label;
/** Legend. **/
private final String legend;
/**
* @see GCharts#newGoogleOMeter(double, String, String, List)
*/
GoogleOMeter(final double data, final String label, final String legend, final List<? extends Color> colors) {
super();
checkArgument(data >= Data.MIN_VALUE && data <= Data.MAX_VALUE, "must be between " + Data.MIN_VALUE + " and " + Data.MAX_VALUE + " : %s", data);
checkContentsNotNull(colors, "colors is null or contains a null");
checkArgument(colors.size() != 1, "Must provide at least 2 colors or none at all.");
this.data = data;
this.label = label;
this.legend = legend;
this.colors = Lists.copyOf(colors);
}
/**
* {@inheritDoc}
*/
@Override
protected void prepareData() {
super.prepareData();
parameterManager.addData(Data.newData(data));
final List<ImmutableList<Color>> colorList = Lists.newArrayList();
for (Color color : colors) {
colorList.add(Lists.of(color));
}
parameterManager.addColors(Lists.copyOf(colorList));
if (label != null) {
parameterManager.addPieChartAndGoogleOMeterLegend(label);
}
if (legend != null) {
parameterManager.addLegend(legend);
}
parameterManager.setChartTypeParameter(ChartType.GOOGLE_O_METER);
}
}