我正在做一个项目,我需要在另外两个 JPanel 中间有一个 buttonPanel,这些 JPanel 容纳画布(画布绘制矩形)。我被困在如何做到这一点上。
我的 GUI 类:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.ArrayList;
public class GUI extends JFrame implements ActionListener
{
private static final Dimension PREF_SIZE = new Dimension(1350, 450);
MyCanvas leftCanvas = new MyCanvas();
MyCanvas rightCanvas = new MyCanvas();
ArrayList<JButton> buttonList = new ArrayList<JButton>();
JPanel buttonPanel, leftPanel, rightPanel;
public GUI()
{
super("Elevators");
//setSize(800,800);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//setVisible(true);
JPanel mainPanel = new JPanel();
mainPanel.setLayout(new GridLayout(1,3));
leftPanel = new JPanel();
leftPanel.add(leftCanvas);
rightPanel = new JPanel();
rightPanel.add(rightCanvas);
buttonPanel = new JPanel();
buttonPanel.setLayout(new GridLayout(12,1));
buttonPanel.setSize(450,450);
add(mainPanel);
for(int i=0; i<12; i++)
{
buttonList.add(new JButton(""+i));
JButton btn = buttonList.get(i);
buttonPanel.add(btn);
l
}
mainPanel.add(buttonPanel, BorderLayout.CENTER);
mainPanel.add(leftPanel, BorderLayout.EAST);
mainPanel.add(rightPanel, BorderLayout.WEST);
createAndShowGui();
}
@Override
public Dimension getPreferredSize() {
return PREF_SIZE;
}
private static void createAndShowGui() {
UI frame = new UI();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
// frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public void actionPerformed(ActionEvent e)
{
}
}
我的 Canvas 类(还没有太多内容):
import java.awt.*;
import java.awt.event.*;
import javax.swing.JFrame;
import javax.swing.JButton;
public class MyCanvas extends Canvas
{
private Elevator e;
int xPos =0;
int yPos=0;
public MyCanvas()
{
setSize(600,600);
repaint();
}
public void paint(Graphics g)
{
g.setColor(Color.BLACK);
g.fillRect(xPos,yPos,100, 100);
}
public void actionPerformed(ActionEvent e)
{
repaint();
}
public void setElevator(Elevator ev)
{
e = ev;
}
}
想要看起来像这样
现在的样子