java - jfreechart JSplitPane 中的每个图

Question

是否有人实现了 JointXYPlot 类型的绘图，其中每个绘图都在 JSplitPane 中，而不是所有绘图都在一个 JPanel 中？这样，可以修改每个图的尺寸之一，而不会影响其他图(例如，如果每个图位于分割 Pane 中，则可以通过拖动 JSplitPane 分隔线来手动调整每个图的垂直高度)。

示例代码如下:

import java.awt.Color;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.Panel;
import java.util.Random;

import javax.swing.JFrame;
import javax.swing.JSplitPane;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.NumberTickUnit;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;

public class SplitPaneCharts extends JFrame {

    private static final int dataPoints = 100;

    public SplitPaneCharts() {
        super();
        this.getContentPane().setLayout(new FlowLayout());
        Panel panel1 = new Panel();
        ChartPanel chartPanel1 = createDemoPanel("Chart1");
        panel1.add(chartPanel1);
        Panel panel2 = new Panel();
        ChartPanel chartPanel2 = createDemoPanel("Chart2");
        panel2.add(chartPanel2);
        XYPlot plot1 = chartPanel1.getChart().getXYPlot();
        XYPlot plot2 = chartPanel2.getChart().getXYPlot();
        plot2.setDomainAxis(plot1.getDomainAxis());
        JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, panel1, panel2);
        this.getContentPane().add(splitPane);

    }

    private ChartPanel createDemoPanel(String title) {
        JFreeChart jfreechart = ChartFactory.createXYLineChart(title, "X", "Y", createSampleData(),
            PlotOrientation.VERTICAL, true, true, false);
        XYPlot xyPlot = (XYPlot) jfreechart.getPlot();
        xyPlot.setDomainCrosshairVisible(true);
        xyPlot.setRangeCrosshairVisible(true);
        XYItemRenderer renderer = xyPlot.getRenderer();
        renderer.setSeriesPaint(0, Color.red);
        NumberAxis domain = (NumberAxis) xyPlot.getDomainAxis();
        domain.setRange(0.00, 1.00);
        domain.setTickUnit(new NumberTickUnit(0.2));
        domain.setVerticalTickLabels(true);
        NumberAxis range = (NumberAxis) xyPlot.getRangeAxis();
        range.setRange(0.0, 1.0);
        range.setTickUnit(new NumberTickUnit(0.2));
        return new ChartPanel(jfreechart);
    }

    private XYDataset createSampleData() {
        XYSeriesCollection xySeriesCollection = new XYSeriesCollection();
        XYSeries series = new XYSeries("Data");
        Random rand = new Random();
        for (int i = 0; i < dataPoints; i++) {
            double x = rand.nextDouble();
            double y = rand.nextDouble();
            series.add(x, y);
        }
        xySeriesCollection.addSeries(series);
        return xySeriesCollection;
    }

    public static void main(String args[]) {
        EventQueue.invokeLater(new Runnable() {

            @Override
            public void run() {
                SplitPaneCharts splitPaneCharts = new SplitPaneCharts();
                splitPaneCharts.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                splitPaneCharts.pack();
                splitPaneCharts.setLocationRelativeTo(null);
                splitPaneCharts.setVisible(true);
            }
        });
    }
}

我遇到的几个问题:

1) 当 Pane 的面积小于绘图时，图表的大小不会调整。

2) 移动 JSplitPane 分隔线后，弹出菜单有时会隐藏/不显示在人民币上。

3) 理想情况下，我希望 X 轴位于其自己的单独 Pane 中，并仅在另外两个 Pane (即 3 x SplitPanes)中显示数据。事实证明，很难弄清楚如何实现 - 我研究了显示 XYPlot，其中我将 dataArea 设置为细水平线 - 因此只绘制 X 轴。但至于如何最好地实现这一点，我不确定。

Answer 1

1. 要使图表随框架调整大小，请指定忽略图表首选大小的布局，例如GridLayout 和框架的 BorderLayout.CENTER；不必要时不要嵌套面板。

   ChartPanel chartPanel1 = createDemoPanel("Chart1");
   ChartPanel chartPanel2 = createDemoPanel("Chart2");
   XYPlot plot1 = chartPanel1.getChart().getXYPlot();
   XYPlot plot2 = chartPanel2.getChart().getXYPlot();
   plot2.setDomainAxis(plot1.getDomainAxis());
   chartPanel1.setLayout(new GridLayout());
   chartPanel2.setLayout(new GridLayout());
   JSplitPane splitPane = new JSplitPane(
       JSplitPane.VERTICAL_SPLIT, chartPanel1, chartPanel2);
   add(splitPane, BorderLayout.CENTER);
   

2. 上下文菜单似乎可以与 GridLayout 配合使用。

3. 您可以尝试使用 CombinedDomainXYPlot，如图 here 所示。 .