Swing JColorChooser类

JColorChooser类提供了一个控件窗格，旨在允许用户操作和选择颜色。

类声明

以下是javax.swing.JColorChooser类的声明 -

public class JColorChooser
   extends JComponent
      implements Accessible

字段

以下是javax.swing.JColorChooser类的字段 -

• protected AccessibleContext accessibleContext
• static String CHOOSER_PANELS_PROPERTY - chooserPanel数组属性名称。
• static String PREVIEW_PANEL_PROPERTY - 预览面板属性名称。
• static String SELECTION_MODEL_PROPERTY - 选择模型属性名称。

构造函数

类方法

方法继承

该类继承以下类中的方法 -

• javax.swing.JComponent
• java.awt.Container
• java.awt.Component
• java.lang.Object

JColorChooser示例

使用编辑器创建以下Java程序：SwingControlDemo.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class JColorChooserExample {
   private JFrame mainFrame;
   private JLabel headerLabel;
   private JLabel statusLabel;
   private JPanel controlPanel;

   public JColorChooserExample(){
      prepareGUI();
   }
   public static void main(String[] args){
       JColorChooserExample  swingControlDemo = new JColorChooserExample();      
      swingControlDemo.showColorChooserDemo();
   }
   private void prepareGUI(){
      mainFrame = new JFrame("Java Swing JColorChooser示例");
      mainFrame.setSize(400,400);
      mainFrame.setLayout(new GridLayout(3, 1));

      mainFrame.addWindowListener(new WindowAdapter() {
         public void windowClosing(WindowEvent windowEvent){
            System.exit(0);
         }        
      });    
      headerLabel = new JLabel("", JLabel.CENTER);        
      statusLabel = new JLabel("",JLabel.CENTER);    
      statusLabel.setSize(350,100);

      controlPanel = new JPanel();
      controlPanel.setLayout(new FlowLayout());

      mainFrame.add(headerLabel);
      mainFrame.add(controlPanel);
      mainFrame.add(statusLabel);
      mainFrame.setVisible(true);  
   }
   private void showColorChooserDemo(){
      headerLabel.setText("Control in action: JColorChooser"); 
      JButton chooseButton = new JButton("选择背景颜色");        

      chooseButton.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            Color backgroundColor = JColorChooser.showDialog(mainFrame,
               "选择背景颜色", Color.white);
            if(backgroundColor != null){
               controlPanel.setBackground(backgroundColor);
               mainFrame.getContentPane().setBackground(backgroundColor);
            }
         }
      });
      controlPanel.add(chooseButton);
      mainFrame.setVisible(true);  
   }
}

执行上面示例代码，得到以下结果：