org.pentaho.plugin.jfreereport.reportcharts.LineChartExpression.java Source code

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Here is the source code for org.pentaho.plugin.jfreereport.reportcharts.LineChartExpression.java

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/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2002-2017 Hitachi Vantara..  All rights reserved.
*/

package org.pentaho.plugin.jfreereport.reportcharts;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.CategoryItemRenderer;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.data.category.CategoryDataset;
import org.pentaho.plugin.jfreereport.reportcharts.backport.FormattedCategoryAxis;
import org.pentaho.plugin.jfreereport.reportcharts.backport.FormattedCategoryAxis3D;

public class LineChartExpression extends CategoricalChartExpression {

    private static final long serialVersionUID = 816438776025760907L;

    private String lineStyle;
    private float lineWidth;
    private boolean markersVisible;

    public LineChartExpression() {
        lineWidth = 1.0f;
        markersVisible = false;
    }

    protected JFreeChart computeCategoryChart(final CategoryDataset dataset) {
        final PlotOrientation orientation = computePlotOrientation();
        if (isThreeD()) {
            final JFreeChart chart = ChartFactory.createLineChart3D(computeTitle(), getCategoryAxisLabel(),
                    getValueAxisLabel(), dataset, orientation, isShowLegend(), false, false);
            chart.getCategoryPlot().setDomainAxis(new FormattedCategoryAxis3D(getCategoryAxisLabel(),
                    getCategoricalAxisMessageFormat(), getRuntime().getResourceBundleFactory().getLocale()));
            final CategoryPlot plot = (CategoryPlot) chart.getPlot();
            configureLogarithmicAxis(plot);
            return chart;
        } else {
            final JFreeChart chart = ChartFactory.createLineChart(computeTitle(), getCategoryAxisLabel(),
                    getValueAxisLabel(), dataset, orientation, isShowLegend(), false, false);
            chart.getCategoryPlot().setDomainAxis(new FormattedCategoryAxis(getCategoryAxisLabel(),
                    getCategoricalAxisMessageFormat(), getRuntime().getResourceBundleFactory().getLocale()));
            final CategoryPlot plot = (CategoryPlot) chart.getPlot();
            configureLogarithmicAxis(plot);
            return chart;
        }
    }

    protected void configureChart(final JFreeChart chart) {
        super.configureChart(chart);

        final CategoryPlot cpl = chart.getCategoryPlot();
        final CategoryItemRenderer renderer = cpl.getRenderer();
        renderer.setStroke(translateLineStyle(lineWidth, lineStyle));
        if (renderer instanceof LineAndShapeRenderer) {
            final LineAndShapeRenderer shapeRenderer = (LineAndShapeRenderer) renderer;
            shapeRenderer.setShapesVisible(isMarkersVisible());
            shapeRenderer.setBaseShapesFilled(isMarkersVisible());
        }

    }

    /**
     * @return returns the style set for the lines
     */
    public String getLineStyle() {
        return lineStyle;
    }

    /**
     * @param value set the style for all line series
     */
    public void setLineStyle(final String value) {
        lineStyle = value;
    }

    /**
     * @return the width of all line series Valid values are float numbers zero or greater
     */
    public float getLineWidth() {
        return lineWidth;
    }

    /**
     * @param value set the width of all line series Valid values are float numbers zero or greater
     */
    public void setLineWidth(final float value) {
        lineWidth = value;
    }

    /**
     * @return boolean whether the markers (data points) for all series are displayed
     */
    public boolean isMarkersVisible() {
        return markersVisible;
    }

    /**
     * @param markersVisible set whether the markers (data points) for all series should be displayed
     */
    public void setMarkersVisible(final boolean markersVisible) {
        this.markersVisible = markersVisible;
    }

}