Java Swing组件 实现521简单表白界面
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2022-03-30 10:47:44
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Java Swing组件 实现521简单表白界面
首先GUI界面的代码块为：
package iloveyou;
import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
public class MyFrame extends JFrame{
//设计一个构造方法
//调用其他方法，直接构造GUI界面
public MyFrame(){
this.setOtherAttribute();
this.addElements();
this.addListener();
this.setMyself();
}
//创建一个面板对象
private JPanel mainPanel = new JPanel();
//创建几个组件
private JLabel pictureLabel = new JLabel();//用来存放图片
private JLabel questionLabel = new JLabel("你是不是喜欢我???");//用来存放问题
private JButton yesButton = new JButton("YES");
private JButton noButton = new JButton("NO");
/**
* 用来处理图片
* 图片路径 宽度 高度
* @param path
* @param width
* @param height
* @return
*/
private ImageIcon drawImage(String path,int width,int height){
ImageIcon imageIcon = new ImageIcon(path);
imageIcon.setImage(imageIcon.getImage().getScaledInstance(width,height,Image.SCALE_DEFAULT));
return imageIcon;
}
/**
* 处理各种组件的状态
*/
private void setOtherAttribute(){
//设置一下每个组件的 颜色 边框 字体 图片等等
//将panel默认的布局方式清除掉
mainPanel.setLayout(null);
//设置图片的位置及边框颜色
pictureLabel.setBounds(40,40,140,200);
pictureLabel.setBorder(BorderFactory.createLineBorder(Color.BLUE));
pictureLabel.setIcon(this.drawImage("timg.jpg",140,200));
//设置问题的位置及边框颜色
questionLabel.setBounds(220,80,260,40);
questionLabel.setBorder(BorderFactory.createLineBorder(Color.BLUE));
questionLabel.setFont(new Font("微软雅黑",Font.BOLD,22));
questionLabel.setHorizontalAlignment(SwingConstants.CENTER);//设置字体位置
//设置yes按钮的位置及边框颜色
yesButton.setBounds(240,160,100,40);
yesButton.setBorder(BorderFactory.createLineBorder(Color.BLUE));
yesButton.setFont(new Font("微软雅黑",Font.BOLD,14));
yesButton.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
//设置no按钮的位置及边框颜色
noButton.setBounds(360,160,100,40);
noButton.setBorder(BorderFactory.createLineBorder(Color.BLUE));
noButton.setFont(new Font("微软雅黑",Font.BOLD,14));
noButton.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
}
/**
* 处理所有组件之间互相添加
*/
private void addElements(){
//将所有的组件添加到Panel里面，这个Panel再添加到Frame里
mainPanel.add(pictureLabel);
mainPanel.add(questionLabel);
mainPanel.add(yesButton);
mainPanel.add(noButton);
this.add(mainPanel);
}
/**
* 用来给按钮添加事件监听
*/
private void addListener(){
//YES按钮的鼠标监听事件
yesButton.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
new ILoveYou();
}
public void mouseExited(MouseEvent e) {
yesButton.setFont(new Font("微软雅黑",Font.BOLD,14));
yesButton.setForeground(Color.BLACK);
}
});
yesButton.addMouseMotionListener(new MouseAdapter() {
public void mouseMoved(MouseEvent e) {
yesButton.setFont(new Font("微软雅黑",Font.BOLD,16));
yesButton.setForeground(Color.RED);
}
});
//NO按钮的鼠标监听事件
noButton.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
System.out.println("鼠标单击");
new ILoveYou();
}
public void mouseExited(MouseEvent e) {
noButton.setText("NO");
noButton.setFont(new Font("微软雅黑",Font.BOLD,16));
noButton.setForeground(Color.BLACK);
}
});
noButton.addMouseMotionListener(new MouseAdapter() {
public void mouseMoved(MouseEvent e) {
noButton.setText("YES");
noButton.setFont(new Font("微软雅黑",Font.BOLD,16));
noButton.setForeground(Color.RED);
}
});
//设置关闭时的事件监听
this.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
int value = JOptionPane.showConfirmDialog(MyFrame.this,"你要把小可爱关掉吗，嘤嘤嘤");
if (value == 0){
JOptionPane.showMessageDialog(MyFrame.this,"关掉就有用吗");
}else {
JOptionPane.showMessageDialog(MyFrame.this,"是不是舍不得我呀");
}
}
});
}
/**
* 处理当前窗体自身的状态
*/
private void setMyself(){
//设置窗体对象的一些属性
//设置窗体的默认大小
//左上角的坐标点,窗体的宽度，高度
this.setBounds(400,300,500,300);
//设置窗体不可以被随意拖拽大小
this.setResizable(false);
//设置窗体单击右上角关闭按钮的时候 不做任何操作
this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
//设置可见性
//需要最后设置，以保证所有组件的可见性
this.setVisible(true);
}
}
心形图案坐标的设置：
画心形的代码：
package iloveyou;
import javax.swing.*;
import java.awt.*;
public class ILoveYou extends JFrame {
private static final int WIDTH = 450;
private static final int HEIGHT = 450;
public ILoveYou(){
this.setBackground(Color.BLACK);//背景色
this.setBounds(500,500,WIDTH,HEIGHT);//设置窗体自己的大小
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//点击关闭
this.setVisible(true);//设置窗口可见
}
//需要重写paint方法
public void paint(Graphics g){
for(int count=1;count<=10;count++){
for(int r=1;r<=100-count;r++){//控制从小变大
Image image = this.createImage(WIDTH,HEIGHT);
Graphics pic = image.getGraphics();
this.drawHeart(pic,WIDTH/2,HEIGHT/2-200+r,r);
try {
Thread.sleep(3);
} catch (InterruptedException e) {
e.printStackTrace();
}
//每一次画完后 让当前的心留在这里
for(int show=1;show<=count;show++){
this.drawHeart(pic,WIDTH/2,HEIGHT/2-100-show,100-show);
}
pic.drawString("我也喜欢你",WIDTH/2-30,HEIGHT/2);
g.drawImage(image,0,0,this);
}
}
}
/**
* 画心形图案
* @param pic
* @param x
* @param y
* @param r
*/
private void drawHeart(Graphics pic,int x,int y,int r){
int offset = (int)(r/1.414);//直角边长
int c1x = x - (r - offset)/2;
int c1y = y - (r - offset)/2;
int c2x = c1x - 2 * offset;
int c2y = c1y + 2 * offset;
int c3x = x + (r - offset)/2;
int c3y = y - (r - offset)/2;
int c4x = c3x + 2 * offset;
int c4y = c3y + 2 * offset;
int ex = x;
int ey = c2y + (x - c2x);
int leftArcX = c1x - r - offset;
int leftArcY = c1y - (r - offset);
int rightArcX = c1x;
int rightArcY = leftArcY;
//画图
pic.setColor(Color.MAGENTA);
pic.drawLine(x,y,c1x,c1y);//O C1
pic.drawLine(x,y,c3x,c3y);//O C3
pic.drawLine(c2x,c2y,ex,ey);//
pic.drawLine(c4x,c4y,ex,ey);//C4 e
pic.drawArc(leftArcX,leftArcY,r*2,r*2,45,180);
pic.drawArc(rightArcX,rightArcY,r*2,r*2,315,180);
}
}
方法执行程序的入口为(main方法)
package iloveyou;
public class TestMain {
public static void main(String[] args) {
new MyFrame();
}
}