英文:
Swing TableHeader with JCheckBox does not work in Nimbus
问题
以下是翻译好的部分:
我正在使用以下渲染器在特定列的表头中渲染一个 JCheckBox。然而,在应用程序中使用 Nimbus 主题时,这在其他主题中运行良好。有没有想法如何使这个渲染器在不同主题之间都能工作?
使用方式:
JTableHeader tblHeader = myTable.getTableHeader();
tblHeader.setDefaultRenderer(new CheckHeaderRenderer(tblHeader, tblHeader.getDefaultRenderer()));
渲染器代码:
import javax.swing.*;
import javax.swing.border.EmptyBorder;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumnModel;
import javax.swing.table.TableModel;
import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
public class CheckHeaderRenderer implements TableCellRenderer {
private final JCheckBox check = new JCheckBox();
private final TableCellRenderer wrappedRenderer;
private final java.util.List<ActionListener> listeners = new ArrayList<>();
public CheckHeaderRenderer(final JTableHeader header, final TableCellRenderer r) {
this.wrappedRenderer = r;
check.setOpaque(false);
check.setFont(header.getFont());
header.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
JTable table = ((JTableHeader) e.getSource()).getTable();
TableColumnModel columnModel = table.getColumnModel();
int viewColumn = columnModel.getColumnIndexAtX(e.getX());
int modelColumn = table.convertColumnIndexToModel(viewColumn);
if (modelColumn != 0) {
return;
}
check.setSelected(!check.isSelected());
TableModel model = table.getModel();
for (int i = 0; i < model.getRowCount(); i++) {
model.setValueAt(check.isSelected(), i, 0);
}
((JTableHeader) e.getSource()).repaint();
// 执行已注册的监听器
for (final ActionListener al : listeners) {
al.actionPerformed(null);
}
}
});
}
public void addActionListener(ActionListener l) {
listeners.add(l);
}
@Override
public Component getTableCellRendererComponent(
JTable tbl, Object val, boolean isS, boolean hasF, int row, int col
) {
JLabel lbl = (JLabel) this.wrappedRenderer.getTableCellRendererComponent(tbl, val, isS, hasF, row, col);
lbl.setHorizontalAlignment(SwingConstants.LEFT);
if (0 != col) {
lbl.setBorder(new EmptyBorder(0, 10, 0, 10));
}
if (0 == col) {
lbl.setIcon(new CheckBoxIcon(check));
lbl.setHorizontalAlignment(SwingConstants.CENTER);
}
return lbl;
}
private static class CheckBoxIcon implements Icon {
private final JCheckBox check;
public CheckBoxIcon(JCheckBox check) {
this.check = check;
}
@Override
public int getIconWidth() {
return check.getPreferredSize().width;
}
@Override
public int getIconHeight() {
return check.getPreferredSize().height;
}
@Override
public void paintIcon(Component c, Graphics g, int x, int y) {
SwingUtilities.paintComponent(g, check, (Container) c, x, y, getIconWidth(), getIconHeight());
}
}
}
英文:
so I am using the following renderer to render a JCheckBox in a table header on a specific column.
However, this does not work when using the Nimbus theme in the application while it works in other themes.
Any idea how I could make this renderer work, across themes?
Dracula theme: dracula themed table header
Nimbus theme: nimbus themed table header
Usage:
JTableHeader tblHeader = myTable.getTableHeader();
tblHeader.setDefaultRenderer(new CheckHeaderRenderer(tblHeader, tblHeader.getDefaultRenderer()));
And the renderer:
import javax.swing.*;
import javax.swing.border.EmptyBorder;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumnModel;
import javax.swing.table.TableModel;
import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
public class CheckHeaderRenderer
implements TableCellRenderer
{
private final JCheckBox check = new JCheckBox();
private final TableCellRenderer wrappedRenderer;
private final java.util.List<ActionListener> listeners = new ArrayList<>();
public CheckHeaderRenderer(final JTableHeader header, final TableCellRenderer r)
{
this.wrappedRenderer = r;
check.setOpaque(false);
check.setFont(header.getFont());
header.addMouseListener(new MouseAdapter(){
@Override
public void mouseClicked(MouseEvent e)
{
JTable table = ((JTableHeader) e.getSource()).getTable();
TableColumnModel columnModel = table.getColumnModel();
int viewColumn = columnModel.getColumnIndexAtX(e.getX());
int modelColumn = table.convertColumnIndexToModel(viewColumn);
if (modelColumn != 0) { return; }
check.setSelected(! check.isSelected());
TableModel model = table.getModel();
for (int i = 0; i < model.getRowCount(); i++)
{
model.setValueAt(check.isSelected(), i, 0);
}
((JTableHeader) e.getSource()).repaint();
// run registered servers
for (final ActionListener al : listeners) {
al.actionPerformed(null);
}
}
});
}
public void addActionListener(ActionListener l)
{
listeners.add(l);
}
@Override
public Component getTableCellRendererComponent(
JTable tbl, Object val, boolean isS, boolean hasF, int row, int col
) {
JLabel lbl = (JLabel) this.wrappedRenderer.getTableCellRendererComponent(tbl, val, isS, hasF, row, col);
lbl.setHorizontalAlignment(SwingConstants.LEFT);
if (0 != col) {
lbl.setBorder(new EmptyBorder(0, 10, 0 ,10));
}
if (0 == col)
{
lbl.setIcon(new CheckBoxIcon(check));
lbl.setHorizontalAlignment(SwingConstants.CENTER);
}
return lbl;
}
private static class CheckBoxIcon
implements Icon
{
private final JCheckBox check;
public CheckBoxIcon(JCheckBox check) {
this.check = check;
}
@Override
public int getIconWidth() {
return check.getPreferredSize().width;
}
@Override
public int getIconHeight() {
return check.getPreferredSize().height;
}
@Override
public void paintIcon(Component c, Graphics g, int x, int y) {
SwingUtilities.paintComponent(g, check, (Container) c, x, y, getIconWidth(), getIconHeight());
}
}
}
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