package com.version2;

/**
 * @author xu
 * @create 2019-07-12 7:54
 */
import javax.swing.*;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import java.awt.*;
import java.awt.event.*;

/**
 * @author xu
 * @create 2019-07-11 10:47
 */
public class Frame01 {

    private JFrame frame;
    private JPanel bigPanel;
    private JPanel smaPanel;

    //时刻改变的值
    private JLabel labelRgb;
    private JLabel labelHex;

    //清空和复制按钮
    private JButton clear;
    private JButton copy;

    //列表框
    private JScrollPane listScroll;
    private JList<String> list;
    private DefaultListModel<String> dlm;
    private String[] elements = new String[6];

    //鼠标第一次按下相对frame的位置
    private int firstX;
    private int firstY;

    //鼠标拖动窗体后相对（0,0）的位置,
    private int ZeroX;
    private int ZeroY;

    //是否能改变JLabel内容标记
    private boolean isOK = true;
    //获取颜色线程
    private ColorGet colorGet;

    Frame01(){
        frame = new JFrame();
        bigPanel = new JPanel();
        smaPanel = new JPanel();

        clear = new JButton("清空");
        copy = new JButton("复制");

        labelRgb = new JLabel("rgb");
        labelHex = new JLabel("hex");

        list = new JList<String>();
        listScroll = new JScrollPane(list);
        dlm = new DefaultListModel<String>();

        init();
        colorGet = new ColorGet();
        colorGet.start();
    }

    public void init(){
        frame.setLayout(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setBounds(200, 200, 300, 200);
        frame.setUndecorated(true);

        bigPanel.setLayout(null);
        bigPanel.setBounds(0,0,300,200);

        smaPanel.setBounds(10,10,100,100);
        smaPanel.setBackground(new Color(255,0,0));

        labelRgb.setBounds(10,120,100,30);
        labelHex.setBounds(10,160,100,30);
        labelHex.setFont(new Font("微软雅黑",Font.BOLD,14));
        labelRgb.setFont(new Font("微软雅黑",Font.BOLD,14));

        labelRgb.setBackground(new Color(255,255,0));
        labelHex.setBackground(new Color(255,0,255));

        clear.setBounds(135,160,65,30);
        copy.setBounds(210,160,65,30);
        clear.setBackground(new Color(240,240,240));
        copy.setBackground(new Color(240,240,240));
        clear.setFont(new Font("微软雅黑",Font.BOLD,13));
        copy.setFont(new Font("微软雅黑",Font.BOLD,13));
        copy.setBackground(Color.pink);

        listScroll.setBounds(135,10,140,150);
        //设置列表宽高
        list.setFixedCellHeight(30);
        list.setFixedCellWidth(135);
        //设置选择模式
        list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        list.setFont(new Font("微软雅黑",Font.BOLD,15));

        bigPanel.add(smaPanel);
        bigPanel.add(labelRgb);
        bigPanel.add(labelHex);
        bigPanel.add(listScroll);
        bigPanel.add(clear);
        bigPanel.add(copy);

        frame.add(bigPanel);

        frameEvent();
        listEvent();
        frame.setVisible(true);
    }

    /**
     * 事件处理
     */
    private void frameEvent(){
        //全局键盘监听事件alt
        Toolkit tk = Toolkit.getDefaultToolkit();
        tk.addAWTEventListener(new AllAwtEventListener(), AWTEvent.KEY_EVENT_MASK);

        //窗体frame
        frame.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseEntered(MouseEvent e) {
                super.mouseEntered(e);
                isOK = false;
            }

            @Override
            public void mouseExited(MouseEvent e) {
                super.mouseExited(e);
                isOK = true;
            }

            @Override
            public void mousePressed(MouseEvent e) {
                if (e.getClickCount() == 1) {
                    firstX = e.getX();
                    firstY = e.getY();
                }
            }
        });

        //拖动frame
        frame.addMouseMotionListener(new MouseMotionAdapter() {
            @Override
            public void mouseDragged(MouseEvent e) {
                super.mouseDragged(e);
                Point p = frame.getLocation();
                //获取此时鼠标的位置，然后通过鼠标的位置-相对位置=frame此时的位置
                ZeroX = p.x + e.getX();
                ZeroY = p.y + e.getY();
                frame.setLocation(ZeroX-firstX,ZeroY-firstY);
            }
        });

        //清空按钮
        clear.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                dlm.clear();
                list.setModel(dlm);
            }
        });
    }

    private void listEvent(){
        /**
         * 添加选项选中状态被改变的监听器
         *     有问题：按下（未松开手）时，从“未选中--选中”。。（释放时）又从“选中--未选中”
         *     单击一下，执行了3次，也就有3次状态改变
         *     暂未解决，只有双击才能解决（目前可用的解决方法，）
         * */
        list.addListSelectionListener(new ListSelectionListener() {
            @Override
            public void valueChanged(ListSelectionEvent e) {

                //获取选中项索引
                int index = e.getFirstIndex();
                //获取hex值
                String strHex = dlm.getElementAt(index);
                System.out.println(strHex);
                //复制到系统剪切板
                SystemTextTool.setClipboardString(strHex);
                //去掉#
                String colorHex = strHex.substring(1);
                //从字符串16进制恢复到整型16进制数
                int hexInt = Integer.parseUnsignedInt(colorHex,16);
                smaPanel.setBackground(new Color(hexInt));

                labelRgb.setText(ColorToHex.toInt(colorHex));
                labelHex.setText("#"+colorHex);
                //设置选中条颜色
                list.setSelectionBackground(new Color(hexInt));
                //勿漏，刷新ListModel
                list.setModel(dlm);
                copy.setBackground(Color.green);
            }
        });

        list.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseExited(MouseEvent e) {
                copy.setBackground(Color.pink);
            }
            @Override
            public void mouseEntered(MouseEvent e){
                isOK = false;
            }
            @Override
            public void mouseClicked(MouseEvent e){
                if(e.getClickCount()==1){
                    System.out.println("单击一次："+list.getSelectedValue());
                }

            }
        });
    }
    public static void main(String[] args) {
        new Frame01();
        //new Fang();
    }

    //全局监听类
    class AllAwtEventListener implements AWTEventListener {
        @Override
        public void eventDispatched(AWTEvent event){
            //先判断事件类型--键盘按下事件
            if(event.getID() == KeyEvent.KEY_PRESSED){
                KeyEvent keyEvent = (KeyEvent)event;
                //如果按下的是Alt+C
                if(keyEvent.isAltDown() && keyEvent.getKeyCode()==KeyEvent.VK_C){

                    System.out.println("你按到'全局Alt+c'键了");
                    String hex = labelHex.getText().trim();
                    SystemTextTool.setClipboardString(hex);

                    //添加到list内，并改变list背景色为所获取颜色
                    //放到第一行，所有元素后移，插入头部---错误方法

                    //添加，删除元素，都使用DefaultListModel--ListModel的子类来
                    dlm.add(0,hex);
                    //把第一行颜色换成获取到的颜色
                    list.setModel(dlm);
                }
            }
        }
    }

    //获取颜色的线程
    class ColorGet extends Thread{
        private Point mousePoint;
        private Robot robot;
        private Color color;
        private String rgb;
        private String hex;

        @Override
        public void run(){
            while (true){

                // 使用中断机制，来终止线程
                if (Thread.currentThread().isInterrupted()) {
                    System.out.println("Interrupted ...");
                    break;
                }
                try{
                    robot = new Robot();
                }catch (AWTException e){
                    e.printStackTrace();
                }
                mousePoint = MouseInfo.getPointerInfo().getLocation();
                /*由于打包成.exe文件后，屏幕与原来的屏幕小了1.5倍，所以在这里先乘1.5倍。然后鼠标位置就是
                当前真正的位置
                forWindows
                *
                color = robot.getPixelColor((int)(mousePoint.getX()*1.5),(int)(mousePoint.getY()*1.5));
*/
                color = robot.getPixelColor((int)(mousePoint.getX()*1),(int)(mousePoint.getY()*1));

                hex = ColorToHex.toHex(color.getRed(),color.getGreen(),color.getBlue());
                rgb = color.getRed()+","+color.getGreen()+","+
                        color.getBlue();

                //isOK代表暂停窗体内容标记
                if(isOK){
                    //给面板设置为鼠标位置的颜色
                    smaPanel.setBackground(color);
                    //改变标签颜色
                    labelHex.setText(hex);
                    labelRgb.setText(rgb);
                }
            }
        }
    }
}