@HoverCraftFullOfEels有助于创建此代码，添加按钮的最佳方式是从 INACTIVE_COLOR中选择所有省略号并更改其颜色到ACTIVE_COLOR。
我的方法是在按钮面板上添加另一个按钮，并定义将要执行的操作。
但是我试图添加无法访问的DrawPanel2类的功能。有什么可能的最佳方法呢？
与往常一样，非常感谢任何其他建议的改进，谢谢。
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.geom.Ellipse2D;
import java.util.*;
import java.util.List;
@SuppressWarnings("serial")
public class DrawPanelMain extends JPanel {
private static final int PREF_W = 700;
private static final int PREF_H = PREF_W;
private List<Point> POINT_LIST = Arrays.asList(new Point[] {
new Point(40, 40),
new Point(40, 100),
new Point(40, 160),
new Point(40, 220),
new Point(40, 280),
new Point(40, 340),
new Point(40, 400),
new Point(40, 460),
new Point(40, 520),
new Point(40, 580),
new Point(100, 100),
new Point(100, 160),
new Point(100, 220),
new Point(100, 280),
new Point(100, 340),
new Point(100, 400),
new Point(100, 460),
new Point(100, 520),
new Point(100, 580),
new Point(160, 160),
new Point(160, 220),
new Point(160, 280),
new Point(160, 340),
new Point(160, 400),
new Point(160, 460),
new Point(160, 520),
new Point(160, 580),
new Point(220, 220),
new Point(220, 280),
new Point(220, 340),
new Point(220, 400),
new Point(220, 460),
new Point(220, 520),
new Point(220, 580),
new Point(280, 280),
new Point(280, 340),
new Point(280, 400),
new Point(280, 460),
new Point(280, 520),
new Point(280, 580),
new Point(340, 340),
new Point(340, 400),
new Point(340, 460),
new Point(340, 520),
new Point(340, 580),
new Point(400, 400),
new Point(400, 460),
new Point(400, 520),
new Point(400, 580),
new Point(460, 460),
new Point(460, 520),
new Point(460, 580),
new Point(520, 520),
new Point(520, 580),
new Point(580, 580)
});
private JTabbedPane tabbedPane = new JTabbedPane();
private int tabIndex = 0;
public DrawPanelMain() {
JPanel btnPanel = new JPanel();
btnPanel.add(new JButton(new AddSwitchAction("Add Switch Panel")));
btnPanel.add(new JButton(new PushConfigAction("Push Config")));
btnPanel.add(new JButton(new ActivateAllAction("Activate All"))); //Button I want to work with
setLayout(new BorderLayout());
add(tabbedPane, BorderLayout.CENTER);
add(btnPanel, BorderLayout.PAGE_END);
}
@Override
public Dimension getPreferredSize() {
if (isPreferredSizeSet()) {
return super.getPreferredSize();
}
return new Dimension(PREF_W, PREF_H);
}
private class AddSwitchAction extends AbstractAction {
public AddSwitchAction(String name) {
super(name);
int mnemonic = (int) name.charAt(0);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e) {
tabIndex++;
String title = "Switch " + tabIndex;
DrawPanel2 tabComponent = new DrawPanel2(POINT_LIST);
tabbedPane.add(title, tabComponent);
}
}
private class PushConfigAction extends AbstractAction {
public PushConfigAction(String name) {
super(name);
int mnemonic = (int) name.charAt(0);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e) {
/*Add code sending the configuration to the switch panel*/
JOptionPane.showMessageDialog(DrawPanelMain.this, "Configuration Pushed to Panel");
}
}
//Here is the code I want to work with for making the button activate all circles
private class ActivateAllAction extends AbstractAction {
public ActivateAllAction(String name) {
super(name);
int mnemonic = (int) name.charAt(1);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e) {
//Add code for performing action here
}
}
private static void createAndShowGui() {
DrawPanelMain mainPanel = new DrawPanelMain();
final double version = 0.1;
JFrame frame = new JFrame("RF Connection Panel " + version);
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
@SuppressWarnings("serial")
class DrawPanel2 extends JPanel {
private static final int OVAL_WIDTH = 40;
private static final Color INACTIVE_COLOR = Color.RED;
private static final Color ACTIVE_COLOR = Color.green;
private List<Point> points;
private List<Ellipse2D> ellipses = new ArrayList<>();
private Map<Ellipse2D, Color> ellipseColorMap = new HashMap<>();
public DrawPanel2(List<Point> points) {
this.points = points;
for (Point p : points) {
int x = p.x - OVAL_WIDTH / 2;
int y = p.y - OVAL_WIDTH / 2;
int w = OVAL_WIDTH;
int h = OVAL_WIDTH;
Ellipse2D ellipse = new Ellipse2D.Double(x, y, w, h);
ellipses.add(ellipse);
ellipseColorMap.put(ellipse, INACTIVE_COLOR);
}
MyMouseAdapter mListener = new MyMouseAdapter();
addMouseListener(mListener);
addMouseMotionListener(mListener);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
for (Ellipse2D ellipse : ellipses) {
g2.setColor(ellipseColorMap.get(ellipse));
g2.fill(ellipse);
}
}
private class MyMouseAdapter extends MouseAdapter {
@Override
public void mousePressed(MouseEvent e) {
for (Ellipse2D ellipse : ellipses) {
if (ellipse.contains(e.getPoint())) {
Color c = ellipseColorMap.get(ellipse);
c = (c == INACTIVE_COLOR) ? ACTIVE_COLOR : INACTIVE_COLOR;
ellipseColorMap.put(ellipse, c);
}
}
repaint();
}
}
}
答案 0 :(得分：3)
由于您可以拥有多个DrawPanel2个实例，并且每个实例都包含在其自己的＆＃34;标签＆＃34;中，您需要找到所选标签并提取DrawPanel2来自它的实例，例如
private class ActivateAllAction extends AbstractAction {
public ActivateAllAction(String name) {
super(name);
int mnemonic = (int) name.charAt(1);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e) {
//Add code for performing action here
Component comp = tabbedPane.getSelectedComponent();
if (comp instanceof DrawPanel2) {
DrawPanel2 drawPanel = (DrawPanel2) comp;
}
}
}
首先检查所选标签组件是否是DrawPanel2的实例，然后再进行转换。
接下来，您需要一些方法来更改省略号的状态...
为此，我向activateAll类添加了DrawPanel2方法，您可以添加一个允许传递boolean的方法来设置状态
public void activateAll() {
for (Ellipse2D ellipse : ellipses) {
ellipseColorMap.put(ellipse, ACTIVE_COLOR);
}
repaint();
}
然后从Action，我简单地称之为
//...
DrawPanel2 drawPanel = (DrawPanel2) comp;
drawPanel.activateAll();