JDialogs は動作しますが、ゲーム ウィンドウの上に新しいトップ レベル ウィンドウをポップアップ表示します。メインのゲーム ディスプレイとコントロール パネルを JDesktopPane (JLayeredPane を拡張する) の背景として実装し、ポップアップを JInternalFrames にすることができます。
工夫された (しかし動作する) 例:
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentAdapter;
import java.awt.event.ActionListener;
import java.text.NumberFormat;
public class DesktopTest extends JFrame {
private JDesktopPane desktop;
private JPanel background;
private JInternalFrame firstFrame;
private JInternalFrame secondFrame;
public DesktopTest() {
super("DesktopTest");
desktop = new JDesktopPane();
setContentPane(desktop);
background = new JPanel(new BorderLayout());
JToolBar toolbar = new JToolBar();
toolbar.add(new AbstractAction("1") {
public void actionPerformed(ActionEvent actionEvent) {
firstFrame.setVisible(true);
}
});
toolbar.add(new AbstractAction("2") {
public void actionPerformed(ActionEvent actionEvent) {
secondFrame.setVisible(true);
}
});
AddPanel addPanel = new AddPanel();
background.add(addPanel, BorderLayout.CENTER);
background.add(toolbar, BorderLayout.SOUTH);
addComponentListener(new ComponentAdapter() {
public void componentResized(ComponentEvent componentEvent) {
background.setSize(desktop.getSize());
background.revalidate();
background.repaint();
}
public void componentShown(ComponentEvent componentEvent) {
background.setSize(desktop.getSize());
background.revalidate();
background.repaint();
}
});
desktop.add(background);
firstFrame = new TermFrame("First Term", "Update First Term: ", addPanel) {
protected int getValue() {
return addPanel.getFirst();
}
protected void update(int value) {
addPanel.setFirst(value);
}
};
firstFrame.pack();
firstFrame.setBounds(10, 10, 200, 150);
desktop.add(firstFrame);
secondFrame = new TermFrame("Second Term", "Update Second Term: ", addPanel){
protected int getValue() {
return addPanel.getSecond();
}
protected void update(int value) {
addPanel.setSecond(value);
}
};
secondFrame.pack();
secondFrame.setBounds(200, 200, 200, 150);
desktop.add(secondFrame);
}
public static void main(String[] args) {
JFrame f = new DesktopTest();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setSize(400, 400);
f.setLocationRelativeTo(null);
f.setVisible(true);
}
static class AddPanel extends JPanel {
private JLabel first;
private JLabel second;
private JLabel result;
public AddPanel() {
first = new JLabel("0");
second = new JLabel("0");
result = new JLabel("0");
Box vertical = Box.createVerticalBox();
vertical.add(Box.createVerticalGlue());
Box horizontal = Box.createHorizontalBox();
horizontal.add(Box.createHorizontalGlue());
horizontal.add(first);
horizontal.add(new JLabel("+"));
horizontal.add(second);
horizontal.add(new JLabel("="));
horizontal.add(result);
horizontal.add(Box.createHorizontalGlue());
vertical.add(horizontal);
vertical.add(Box.createVerticalGlue());
setLayout(new BorderLayout());
add(vertical, BorderLayout.CENTER);
}
public void setFirst(int i) {
first.setText(Integer.toString(i));
updateResult();
}
public int getFirst() {
return Integer.parseInt(first.getText());
}
public void setSecond(int j) {
second.setText(Integer.toString(j));
updateResult();
}
public int getSecond() {
return Integer.parseInt(second.getText());
}
private void updateResult() {
int i = Integer.parseInt(first.getText());
int j = Integer.parseInt(second.getText());
result.setText(Integer.toString(i + j));
revalidate();
}
}
static abstract class TermFrame extends JInternalFrame {
protected AddPanel addPanel;
private JFormattedTextField termField;
public TermFrame(String title, String message, AddPanel addPanel) {
super(title, true, true, true);
this.addPanel = addPanel;
NumberFormat format = NumberFormat.getNumberInstance();
format.setMaximumFractionDigits(0);
termField = new JFormattedTextField(format);
termField.setColumns(3);
termField.setValue(getValue());
JPanel content = new JPanel(new FlowLayout());
content.add(new JLabel(message));
content.add(termField);
JButton apply = new JButton("apply");
apply.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent actionEvent) {
Integer value = Integer.parseInt(termField.getText());
update(value);
}
});
content.add(apply);
setContentPane(content);
setDefaultCloseOperation(JInternalFrame.HIDE_ON_CLOSE);
}
protected abstract int getValue();
protected abstract void update(int value);
}
}