biz.ixnay.pivot.charts.skin.jfree.AreaChartViewSkin.java Source code

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Here is the source code for biz.ixnay.pivot.charts.skin.jfree.AreaChartViewSkin.java

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/*
 * Copyright (c) 2009 VMware, Inc.
 * Copyright 2009 G. Brown, ixnay.biz.
 *
 * 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 biz.ixnay.pivot.charts.skin.jfree;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.CategoryLabelPositions;
import org.jfree.chart.entity.CategoryItemEntity;
import org.jfree.chart.entity.ChartEntity;
import org.jfree.chart.entity.XYItemEntity;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.CategoryDataset;

import org.apache.pivot.charts.AreaChartView;
import org.apache.pivot.charts.ChartView;
import org.apache.pivot.collections.List;

/**
 * Area chart view skin.
 *
 * @author gbrown
 */
public class AreaChartViewSkin extends JFreeChartViewSkin {
    private double categoryLabelRotation = 0;

    @Override
    public ChartView.Element getElementAt(int x, int y) {
        ChartView.Element element = null;

        ChartEntity chartEntity = getChartEntityAt(x, y);
        if (chartEntity instanceof CategoryItemEntity) {
            CategoryItemEntity categoryItemEntity = (CategoryItemEntity) chartEntity;
            CategoryDataset dataset = categoryItemEntity.getDataset();

            String columnKey = (String) categoryItemEntity.getColumnKey();
            int columnIndex = dataset.getColumnIndex(columnKey);

            String rowKey = (String) categoryItemEntity.getRowKey();
            int rowIndex = dataset.getRowIndex(rowKey);

            element = new ChartView.Element(rowIndex, columnIndex);
        } else if (chartEntity instanceof XYItemEntity) {
            XYItemEntity xyItemEntity = (XYItemEntity) chartEntity;
            element = new ChartView.Element(xyItemEntity.getSeriesIndex(), xyItemEntity.getItem());
        }

        return element;
    }

    @Override
    protected JFreeChart createChart() {
        AreaChartView chartView = (AreaChartView) getComponent();

        String title = chartView.getTitle();
        String horizontalAxisLabel = chartView.getHorizontalAxisLabel();
        String verticalAxisLabel = chartView.getVerticalAxisLabel();
        boolean showLegend = chartView.getShowLegend();

        String seriesNameKey = chartView.getSeriesNameKey();
        List<?> chartData = chartView.getChartData();

        JFreeChart chart;
        ChartView.CategorySequence categories = chartView.getCategories();
        if (categories.getLength() > 0) {
            CategorySeriesDataset dataset = new CategorySeriesDataset(categories, seriesNameKey, chartData);
            chart = ChartFactory.createAreaChart(title, horizontalAxisLabel, verticalAxisLabel, dataset,
                    PlotOrientation.VERTICAL, showLegend, false, false);

            CategoryPlot plot = (CategoryPlot) chart.getPlot();
            CategoryAxis domainAxis = plot.getDomainAxis();
            CategoryLabelPositions categoryLabelPositions = CategoryLabelPositions
                    .createUpRotationLabelPositions(categoryLabelRotation);
            domainAxis.setCategoryLabelPositions(categoryLabelPositions);
        } else {
            chart = ChartFactory.createXYAreaChart(title, horizontalAxisLabel, verticalAxisLabel,
                    new XYSeriesDataset(seriesNameKey, chartData), PlotOrientation.VERTICAL, showLegend, false,
                    false);
        }

        return chart;
    }

    public double getCategoryLabelRotation() {
        return categoryLabelRotation;
    }

    public void setCategoryLabelRotation(double categoryLabelRotation) {
        this.categoryLabelRotation = categoryLabelRotation;
        repaintComponent();
    }
}