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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.qpid.disttest.charting.chartbuilder;
import java.awt.Color;
import java.awt.GradientPaint;
import org.apache.qpid.disttest.charting.definition.ChartingDefinition;
import org.apache.qpid.disttest.charting.seriesbuilder.DatasetHolder;
import org.apache.qpid.disttest.charting.seriesbuilder.SeriesBuilder;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.title.ShortTextTitle;
import org.jfree.data.general.Dataset;
public abstract class BaseChartBuilder implements ChartBuilder
{
static final GradientPaint BLUE_GRADIENT = new GradientPaint(0, 0, Color.white, 0, 1000, Color.blue);
private SeriesPainter _seriesPainter = new SeriesPainter();
private final SeriesBuilder _seriesBuilder;
protected BaseChartBuilder(SeriesBuilder seriesBuilder)
{
_seriesBuilder = seriesBuilder;
}
@Override
public JFreeChart buildChart(ChartingDefinition chartingDefinition)
{
_seriesBuilder.setDatasetHolder(newDatasetHolder());
Dataset dataset = _seriesBuilder.build(chartingDefinition.getSeriesDefinitions());
JFreeChart chart = createChart(chartingDefinition, dataset);
return chart;
}
/**
* return a holder of an empty dataset suitable for use with the chart type
* returned by {@link #createChartImpl(String, String, String, Dataset, PlotOrientation, boolean, boolean, boolean)}.
*/
protected abstract DatasetHolder newDatasetHolder();
/**
* Create a chart with the supplied parameters.
*
* For ease of implementation, the signature is intentionally similar
* to {@link ChartFactory}'s factory methods.
*/
protected abstract JFreeChart createChartImpl(
String title, String xAxisTitle, String yAxisTitle,
final Dataset dataset,
PlotOrientation plotOrientation, boolean showLegend, boolean showToolTips, boolean showUrls);
/**
* Create a {@link SeriesStrokeAndPaintApplier} that will be used to format a chart
*/
protected abstract SeriesStrokeAndPaintApplier newStrokeAndPaintApplier();
private JFreeChart createChart(ChartingDefinition chartingDefinition, final Dataset dataset)
{
String title = chartingDefinition.getChartTitle();
String xAxisTitle = chartingDefinition.getXAxisTitle();
String yAxisTitle = chartingDefinition.getYAxisTitle();
final JFreeChart chart = createChartImpl(
title, xAxisTitle, yAxisTitle,
dataset,
PLOT_ORIENTATION, SHOW_LEGEND, SHOW_TOOL_TIPS, SHOW_URLS);
addSubtitle(chart, chartingDefinition);
chart.setBackgroundPaint(BLUE_GRADIENT);
_seriesPainter.applySeriesAppearance(chart, chartingDefinition.getSeriesDefinitions(), newStrokeAndPaintApplier());
return chart;
}
private void addSubtitle(JFreeChart chart, ChartingDefinition chartingDefinition)
{
if (chartingDefinition.getChartSubtitle() != null)
{
chart.addSubtitle(new ShortTextTitle(chartingDefinition.getChartSubtitle()));
}
}
void setSeriesPainter(SeriesPainter seriesPainter)
{
_seriesPainter = seriesPainter;
}
}
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