Question

我有这个小组：

public class MyPanel extends JPanel {

    public MyPanel() {
        super();
        this.setLayout(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();

        JTable leftTable = new JTable();
        gbc.fill = GridBagConstraints.BOTH;
        gbc.gridx = 0;
        gbc.gridy = 0;
        gbc.weightx = 0.1;
        gbc.weighty = 1.0;
        add(leftTable, gbc);

        JTextPane textPane = new JTextPane();
        gbc.fill = GridBagConstraints.BOTH;
        gbc.gridx = 1;
        gbc.gridy = 0;
        gbc.weightx = 0.4;
        gbc.weighty = 1.0;
        add(textPane, gbc);

        JTable rightTable = new JTable();
        gbc.fill = GridBagConstraints.BOTH;
        gbc.gridx = 2;
        gbc.gridy = 0;
        gbc.weightx = 0.5;
        gbc.weighty = 1.0;
        add(rightTable, gbc);
    }
}

然后当我在JTextPane中输入一些字符时，它会自动调整大小。在同一行（文本窗格）上有200个字符，2个JTable不再可见。

如何修复JTextPane的宽度？

感谢。

Answer 1

只需将gbc.fill = GridBagConstraints.NONE;用于JTextPane

即可

Answer 2

最后，我使用了来自FormLayout的JGoodies。

private void initItemsPanel() {
    JPanel itemsPanel = new JPanel();
    itemsPanel.setLayout(new FormLayout("left:pref, fill:400px, pref:grow", "fill:20px, fill:4px, fill:max(20px;pref)"));
    CellConstraints cc = new CellConstraints();

    // the left table
    JTable leftTable = new JTable();
    itemsPanel.add(leftTable.getTableHeader(), cc.xywh(1, 1, 1, 2));
    itemsPanel.add(leftTable, cc.xywh(1, 3, 1, 1));

    // the text pane
    itemsPanel.add(new JTextPane(), cc.xywh(2, 2, 1, 2));

    // the right table
    JTable rightTable = new JTable();
    rightTable.setAutoResizeMode(JTable.AUTO_RESIZE_LAST_COLUMN);
    itemsPanel.add(rightTable.getTableHeader(), cc.xywh(3, 1, 1, 2));
    itemsPanel.add(rightTable, cc.xywh(3, 3, 1, 1));

    // Adding the items panel to dialog panel
    JScrollPane itemsScrollPane = new JScrollPane(itemsPanel);
    itemsScrollPane.getVerticalScrollBar().setUnitIncrement(3);

    dialogPanel.add(itemsScrollPane, BorderLayout.CENTER); // with dialogPanel previously instantiated
}

对于我测试的所有情况（调整大小，空/填充组件等），它更容易预测。

请注意，您必须明确调用getTableHeader()，因为JTable不直接位于JScrollPane中。

感谢。

在GridBagLayout中修复JTextPane的宽度

2 个答案: