java ColorChooser

简介

java 核心编程

创建了三个chooser。一个是模态，一个是非模态，一个是非模态实时。

放入别的frame 进行了展示

image

code

/*
 * @Author: your name
 * @Date: 2020-11-08 15:59:26
 * @LastEditTime: 2020-11-08 16:15:56
 * @LastEditors: Please set LastEditors
 * @Description: In User Settings Edit
 * @FilePath: /java/colorChooser/ColorChooserPanel.java
 */
package optionDialog;

import java.awt.Color;
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JColorChooser;
import javax.swing.JDialog;
import javax.swing.JPanel;

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

public class ColorChooserPanel extends JPanel {

    public ColorChooserPanel() {
        JButton modalButton = new JButton("Modal");
        modalButton.addActionListener(new ModalListener());
        add(modalButton);

        JButton modelessButton = new JButton("Modeless");
        modelessButton.addActionListener(new ModelessListener());
        add(modelessButton);

        JButton immediateButton = new JButton("Immediate");
        immediateButton.addActionListener(new ImmediateListener());
        add(immediateButton);
    }

    private class ModalListener implements ActionListener {
        public void actionPerformed(ActionEvent event) {
            Color defaultColor = getBackground();
            Color selected = JColorChooser.showDialog(ColorChooserPanel.this, "Set background", defaultColor);
            if (selected != null) {
                setBackground(selected);
            }
        }
    }

    private class ModelessListener implements ActionListener {
        private JDialog dialog;
        private JColorChooser chooser;

        public ModelessListener() {
            chooser = new JColorChooser();
            dialog = JColorChooser.createDialog(ColorChooserPanel.this, "Background Color", false, chooser,
                    event -> setBackground(chooser.getColor()), null);
        }

        public void actionPerformed(ActionEvent event) {
            chooser.setColor(getBackground());
            dialog.setVisible(true);

        }
    }

    private class ImmediateListener implements ActionListener {
        private JDialog dialog;
        private JColorChooser chooser;

        public ImmediateListener() {
            chooser = new JColorChooser();
            chooser.getSelectionModel().addChangeListener(event -> setBackground(chooser.getColor()));

            dialog = new JDialog((Frame) null, false);
            dialog.add(chooser);
            dialog.pack();
        }

        public void actionPerformed(ActionEvent event) {
            chooser.setColor(getBackground());
            dialog.setVisible(true);
        }
    }
}