将 ChartPanel 添加到 CardLayout

Question

我有一个用GridBagLayout 组织的非常基本的 GUI。最复杂的部分是 West 填充 ScrollPane 的底部，右侧是一个带有 CardLayout 的面板，它有多个 ChartPanel，因此我可以在几个图表之间切换。

我的问题是在我启动程序时出现的。

在我向任何方向调整框架大小后，调整大小问题就消失了。我已经确认图表面板是问题所在，因为没有将其添加到CardLayout 面板可以修复它。我创建了一个空白 ChartPanel 并稍后在采取一些操作后填充它，但这就是我所做的：

public class Tester {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Chipmunk: Variant Data Collection Tool");
        JPanel hotspotPanel = new JPanel(new CardLayout());
        ChartPanel subHotspotPanel = new ChartPanel(null);
        JPanel indelHotspotPanel = new JPanel(new BorderLayout());
        JTextPane resultPane = new JTextPane();
        JPanel main = new JPanel(new GridBagLayout());
        JPanel header = new JPanel(new BorderLayout());

        header.setBackground(Color.WHITE);
        frame.setLayout(new BorderLayout());
        frame.setMinimumSize(new Dimension(875, 600));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
        frame.setLocation(dim.width/2-frame.getSize().width/2, dim.height/2-frame.getSize().height/2);
        resultPane.setOpaque(false);
        resultPane.setEditable(false);
        GridBagConstraints c = new GridBagConstraints();
        DocumentFilter filter = new UppercaseDocumentFilter();
        JTextField geneField = new JTextField(10);
        ((AbstractDocument) geneField.getDocument()).setDocumentFilter(filter);
        geneField.setMinimumSize(geneField.getPreferredSize());
        JTextField proEffField = new JTextField(10);
        proEffField.setMinimumSize(proEffField.getPreferredSize());
        String[] mutTypes = { "missense", "nonsense", "frameshift", "nonframeshift"};
        JComboBox<String> mutTypeComboBox = new JComboBox<String>(mutTypes);
        JButton saveResultsButton = new JButton("Save to TSV");
        JPanel glass = (JPanel) frame.getGlassPane();
        JButton clearButton = new JButton("Clear");
        JButton cosmicButton = new JButton("To COSMIC");
        JButton dataButton = new JButton("Show Data");
        dataButton.setEnabled(false);
        JButton goButton = new JButton("GO");

        c.weightx = 1.0;c.gridx = 0;c.gridy = 0;c.anchor = GridBagConstraints.EAST;c.ipadx=5;c.ipady=5;
        main.add(new JLabel("Gene: "), c);
        c.gridx = 1;c.gridy = 0;c.anchor = GridBagConstraints.WEST;
        main.add(geneField, c);
        c.gridx = 0;c.gridy = 1;c.anchor = GridBagConstraints.EAST;
        main.add(new JLabel("Protein Effect: "), c);
        c.gridx = 1;c.gridy = 1;c.anchor = GridBagConstraints.WEST;
        main.add(proEffField, c);
        c.gridx =0;c.gridy = 2;c.anchor = GridBagConstraints.EAST;
        main.add(new JLabel("Mutation Type: "), c);
        c.gridx =1;c.gridy = 2;c.anchor = GridBagConstraints.WEST;
        main.add(mutTypeComboBox, c);
        c.gridx =0;c.gridy = 3;c.anchor = GridBagConstraints.WEST;
        main.add(saveResultsButton, c);
        c.gridx = 0;c.gridy = 3;c.anchor = GridBagConstraints.EAST;
        main.add(goButton, c);
        c.gridx = 1;c.gridy = 3;c.anchor = GridBagConstraints.WEST;
        main.add(clearButton,c);
        c.gridx = 0;c.gridy = 3;c.anchor = GridBagConstraints.CENTER;
        main.add(dataButton,c);
        c.gridx = 1;c.gridy = 3;c.anchor = GridBagConstraints.EAST;
        main.add(cosmicButton,c);
        c.gridx = 0; c.gridy =4;c.gridwidth =1; c.weightx = 1.0;c.weighty = 1.0; c.fill = GridBagConstraints.BOTH;
        JScrollPane scrollPane = new JScrollPane(resultPane);
        main.add(scrollPane, c);
        c.gridx = 1; c.gridy =4;c.gridwidth = 1; c.weightx = 1.0;c.weighty = 1.0; c.fill = GridBagConstraints.BOTH;

        hotspotPanel.add(subHotspotPanel, "SUBPANEL");
        hotspotPanel.add(indelHotspotPanel, "INDELPANEL");
        hotspotPanel.add(new JPanel(), "BLANK");
        main.add(hotspotPanel, c);
        frame.add(header, BorderLayout.NORTH);
        frame.add(main, BorderLayout.CENTER);

        frame.pack();
        frame.setVisible(true);
    }

}

Answer 1

使用这个example，很明显ChartPanel 在CardLayout 中可以正常工作。下面的示例覆盖getPreferredSize()，如here 所示，以建立ChartPanel 的初始大小。在每张卡片上使用GridLayout 允许图表在调整封闭框架大小时填充面板。

import java.awt.BorderLayout;
import java.awt.CardLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.util.Random;
import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.data.general.DefaultPieDataset;

/**
 * @see https://stackoverflow.com/a/36392696/230513
 * @see https://stackoverflow.com/a/36243395/230513
 */
public class CardPanel extends JPanel {

    private static final Random r = new Random();
    private static final JPanel cards = new JPanel(new CardLayout());
    private final String name;

    public CardPanel(String name) {
        super(new GridLayout());
        this.name = name;
        DefaultPieDataset pieDataset = new DefaultPieDataset();
        pieDataset.setValue("One", r.nextInt(10) + 10);
        pieDataset.setValue("Two", r.nextInt(20) + 10);
        pieDataset.setValue("Three", r.nextInt(30) + 10);
        JFreeChart chart = ChartFactory.createPieChart3D(
            "3D Pie Chart", pieDataset, true, true, true);
        chart.setTitle(name);
        this.add(new ChartPanel(chart) {

            @Override
            public Dimension getPreferredSize() {
                return new Dimension(500, (int)(500 * 0.62));
            }
        });
    }

    @Override
    public String toString() {
        return name;
    }

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

            @Override
            public void run() {
                create();
            }
        });
    }

    private static void create() {
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        for (int i = 1; i < 9; i++) {
            CardPanel p = new CardPanel("Chart " + String.valueOf(i));
            cards.add(p, p.toString());
        }
        JPanel control = new JPanel();
        control.add(new JButton(new AbstractAction("\u22b2Prev") {

            @Override
            public void actionPerformed(ActionEvent e) {
                CardLayout cl = (CardLayout) cards.getLayout();
                cl.previous(cards);
            }
        }));
        control.add(new JButton(new AbstractAction("Next\u22b3") {

            @Override
            public void actionPerformed(ActionEvent e) {
                CardLayout cl = (CardLayout) cards.getLayout();
                cl.next(cards);
            }
        }));
        f.add(cards, BorderLayout.CENTER);
        f.add(control, BorderLayout.SOUTH);
        f.pack();
        f.setLocationRelativeTo(null);
        f.setVisible(true);
    }
}