com.mergano.core.GraphChart.java Source code

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Here is the source code for com.mergano.core.GraphChart.java

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/*
 * Copyright 2016 vchuk.
 *
 * Licensed 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 com.mergano.core;

import java.awt.Color;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.CategoryLabelPositions;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.CategoryItemRenderer;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;

public class GraphChart {

    public GraphChart() {
        final CategoryDataset dataset = createDataset();
        final JFreeChart chart = createChart(dataset);
        final ChartPanel chartPanel = new ChartPanel(chart); // CHART PANEL
    }

    private CategoryDataset createDataset() {

        // row keys...
        final String series1 = "First";
        final String series2 = "Second";

        // column keys...
        final String category1 = "Jan";
        final String category2 = "Feb";
        final String category3 = "Mar";
        final String category4 = "Apr";
        final String category5 = "May";
        final String category6 = "June";
        final String category7 = "July";
        final String category8 = "Aug";
        final String category9 = "Sep";
        final String category10 = "Oct";
        final String category11 = "Nov";
        final String category12 = "Dec";

        // create the dataset...
        final DefaultCategoryDataset dataset = new DefaultCategoryDataset();

        dataset.addValue(1.0, series1, category1);
        dataset.addValue(4.0, series1, category2);
        dataset.addValue(3.0, series1, category3);
        dataset.addValue(5.0, series1, category4);
        dataset.addValue(5.0, series1, category5);
        dataset.addValue(3.0, series1, category6);
        dataset.addValue(4.0, series1, category7);
        dataset.addValue(5.0, series1, category8);
        dataset.addValue(3.0, series1, category9);
        dataset.addValue(6.0, series1, category10);
        dataset.addValue(1.0, series1, category11);
        dataset.addValue(2.0, series1, category12);

        dataset.addValue(5.0, series2, category1);
        dataset.addValue(7.0, series2, category2);
        dataset.addValue(6.0, series2, category3);
        dataset.addValue(8.0, series2, category4);
        dataset.addValue(4.0, series2, category5);
        dataset.addValue(7.0, series2, category6);
        dataset.addValue(2.0, series2, category7);
        dataset.addValue(8.0, series2, category8);
        dataset.addValue(9.0, series2, category9);
        dataset.addValue(3.0, series2, category10);
        dataset.addValue(2.0, series2, category11);
        dataset.addValue(1.0, series2, category12);
        return dataset;
    }

    private JFreeChart createChart(final CategoryDataset dataset) {

        final JFreeChart chart = ChartFactory.createBarChart("Revenue", "Monthly", "Amount", dataset,
                PlotOrientation.VERTICAL, false, true, false);

        // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
        // set the background color for the chart...
        chart.setBackgroundPaint(Color.white);

        // get a reference to the plot for further customisation...
        final CategoryPlot plot = chart.getCategoryPlot();
        plot.setBackgroundPaint(Color.white);
        plot.setDomainGridlinePaint(Color.white);
        plot.setRangeGridlinePaint(Color.white);

        // set the range axis to display integers only...
        final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
        rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
        rangeAxis.setUpperMargin(0.15);

        // disable bar outlines...
        final CategoryItemRenderer renderer = plot.getRenderer();
        renderer.setSeriesItemLabelsVisible(0, Boolean.TRUE);

        final CategoryAxis domainAxis = plot.getDomainAxis();
        domainAxis.setCategoryLabelPositions(CategoryLabelPositions.DOWN_90);

        return chart;

    }

}