java - 在不使用 DefaultTableCellRenderer 的情况下设置 JTable 列水平对齐

Question

我有以下 TableCellRenderer(不是 DefaultTableCellRenderer)，它允许我在 JTable 的单元格中跳过行:

import java.awt.Color;
import java.awt.Component;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.UIManager;
import javax.swing.table.TableCellRenderer;

public class MyCellRenderer extends JTextArea implements TableCellRenderer {

  Color highlightBackground = (Color) UIManager.get("Table.selectionBackground");

  public MyCellRenderer() {
    setLineWrap(true);
    setWrapStyleWord(true);
  }

  @Override
  public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
    setText((String) value); //or something in value, like value.getNote()...
    setSize(table.getColumnModel().getColumn(column).getWidth(), getPreferredSize().height);
    if (table.getRowHeight(row) != getPreferredSize().height) {
      table.setRowHeight(row, getPreferredSize().height);
    }
    if (table.isRowSelected(row)) {
      this.setBackground(highlightBackground);
    } else {
      this.setBackground(Color.WHITE);
    }
    return this;
  }
}

我只想更改此渲染器的水平对齐方式。 (这意味着单元格的文本会在它们的中心或右侧，现在是左侧)。

下面是我如何使用这个 TableCellRenderer :

Table.getColumnModel().getColumn(1).setCellRenderer(new MyCellRenderer());

Answer 1

我已经找到答案了，谢谢TT。对于提示，我只是删除了自定义构造函数及其换行符，扩展了 JTextPane，并添加了几行代码。对于需要允许跳过行和设置单元格水平对齐的类的任何人，这里是代码:

import java.awt.Color;
import java.awt.Component;
import javax.swing.JTable;
import javax.swing.JTextPane;
import javax.swing.UIManager;
import javax.swing.table.TableCellRenderer;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledDocument;

public class MyCellRenderer extends JTextPane implements TableCellRenderer {

Color highlightBackground = (Color) UIManager.get("Table.selectionBackground");

@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
    setText((String) value);//or something in value, like value.getNote()...
    setSize(table.getColumnModel().getColumn(column).getWidth(),
            getPreferredSize().height);
    if (table.getRowHeight(row) != getPreferredSize().height) {
        table.setRowHeight(row, getPreferredSize().height);
    }
    if (table.isRowSelected(row)) {
        this.setBackground(highlightBackground);
    } else {
        this.setBackground(Color.WHITE);
    }

    //Added lines
    StyledDocument doc = this.getStyledDocument();
    SimpleAttributeSet center = new SimpleAttributeSet();
    StyleConstants.setAlignment(center, StyleConstants.ALIGN_CENTER);
    doc.setParagraphAttributes(0, doc.getLength(), center, false);
    //Added Lines

    return this;
}
}