java swing實現(xiàn)QQ賬號密碼輸入框

更新時間：2019年06月19日 14:36:08 作者：MH_ANG

這篇文章主要為大家詳細介紹了Java swing實現(xiàn)QQ賬號密碼輸入框，具有一定的參考價值，感興趣的小伙伴們可以參考一下

本文實例為大家分享了Java swing 仿QQ賬號密碼輸入框，供大家參考，具體內(nèi)容如下

主要思路是自己定義 AccountPanel 和 PasswordPanel 類，繼承JPanel，通過 paintComponent(Graphics g) 方法重繪面板，實現(xiàn)目標(biāo)樣式。

先上效果圖

正常顯示效果:

鼠標(biāo)放在控件上時的效果:

騰訊QQ登錄界面的賬號密碼輸入部分效果比對:

下面直接給出代碼吧

AccountPanel:

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
 
import javax.swing.JPanel;
 
public class AccountPanel extends JPanel{
 
 private static final long serialVersionUID = 1L;
 
 private Color normalc=Color.LIGHT_GRAY;
 private Color borderc=Color.LIGHT_GRAY;
 private boolean flag=false;
 
 public AccountPanel(){}
 
 public AccountPanel(Color normalc,Color borderc){
 this.normalc=normalc;
 this.borderc=borderc;
 }
 
 public void setBorder(boolean flag){
 this.flag=flag;
 }
 
 
 @Override
 public void paintComponent(Graphics g){
 
 super.paintComponent(g);
 
 Graphics2D g2=(Graphics2D) g;
 
 //設(shè)置繪圖質(zhì)量
 g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);
 
 //畫一個頂部兩個角為圓角，底部兩個角為直角的矩形
 g2.setColor(Color.white);
 g2.fillRoundRect(0, 0, 190, 30, 10, 10);
 g2.fillRect(0, 10, 190, 17);
 
 //為該矩形添加邊框
 if(flag){
  g2.setStroke(new BasicStroke(2.0f));
  g2.setColor(borderc);
  g2.drawArc(1, 1, 10, 10, 180, -90);//繪制圓弧
  g2.drawLine(5, 1, 185, 1);
  g2.drawArc(179, 1, 10, 10, 90, -90);//繪制圓弧
  g2.drawLine(1, 5, 1, 29);
  g2.drawLine(189, 5, 189, 29);
  g2.drawLine(1, 29, 190, 29);
 }
 else{
  g2.setStroke(new BasicStroke(1.0f));
  g2.setColor(normalc);
  g2.drawArc(0, 0, 10, 10, 180, -90);//繪制圓弧
  g2.drawLine(5, 0, 185, 0);
  g2.drawArc(179, 0, 10, 10, 90, -90);//繪制圓弧
  g2.drawLine(0, 5, 0, 30);
  g2.drawLine(189, 5, 189, 30);
  g2.drawLine(0, 30, 190, 30);
 }
 
 }
 
}

PasswordPanel:

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
 
import javax.swing.JPanel;
 
public class PasswordPanel extends JPanel{
 
 private static final long serialVersionUID = 1L;
 
 private Color normalc=Color.LIGHT_GRAY;
 private Color borderc=Color.LIGHT_GRAY;
 private boolean flag=false;
 
 public PasswordPanel(){}
 
 public PasswordPanel(Color normalc,Color borderc){
 this.normalc=normalc;
 this.borderc=borderc;
 }
 
 public void setBorder(boolean flag){
 this.flag=flag;
 }
 
 @Override
 public void paintComponent(Graphics g){
 
 super.paintComponent(g);
 
 Graphics2D g2=(Graphics2D) g;
 
 //設(shè)置繪圖質(zhì)量
 g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);
 
 //畫一個頂部兩個角為圓角，底部兩個角為直角的矩形
 g2.setColor(Color.white);
 g2.fillRoundRect(0, 0, 190, 30, 10, 10);
 g2.fillRect(0, 0, 190, 17);
 
 //為該矩形添加邊框
 //為該矩形添加邊框
 if(flag){
  g2.setStroke(new BasicStroke(2.0f));
  g2.setColor(borderc);
  g2.drawLine(1, 1, 1, 25);
  g2.drawLine(189, 1, 189, 25);
  g2.drawLine(1, 1, 190, 1);
  g2.drawArc(1, 18, 10, 10, 180, 90);//繪制圓弧
  g2.drawArc(179, 18, 10, 10, 270, 90);//繪制圓弧
  g2.drawLine(5, 29, 185, 29);
 }
 else{
  g2.setStroke(new BasicStroke(1.0f));
  g2.setColor(normalc);
  g2.drawLine(0, 0, 0, 25);
  g2.drawLine(189, 0, 189, 25);
  g2.drawLine(0, 0, 190, 0);
  g2.drawArc(0, 18, 10, 10, 180, 90);//繪制圓弧
  g2.drawArc(179, 18, 10, 10, 270, 90);//繪制圓弧
  g2.drawLine(5, 29, 185, 29);
 }
 
 }
}

下面的代碼就是主窗體了

Demo1:

import java.awt.Color;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
 
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
 
 
public class Demo1 {
 
 public static void main(String[] args) {
 
 //初始化窗體
 JFrame frame=new JFrame("My QQ");
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 frame.setSize(300, 200);
 frame.setLocationRelativeTo(null);
 frame.setLayout(null);
 
 //添加賬號面板
 AccountPanel accountPanel=new AccountPanel(Color.LIGHT_GRAY,new Color(56,172,239));
 accountPanel.setLayout(null);
 accountPanel.setBounds(30, 15, 190, 30);
 frame.add( accountPanel);
 
 //在賬號面板中添加文本框
 JTextField accountTF=new JTextField();
 accountTF.setBounds(7, 0, 153, 30);
 accountTF.setOpaque(false);
 accountTF.setBorder(null);
 accountPanel.add(accountTF);
 
 //在賬號面板中的文本框后添加按鈕
 JButton jb1=new JButton(new ImageIcon(
  Demo1.class.getClassLoader().getResource("res/images/btn1.png")));
 jb1.setBounds(160, 0, 30, 30);
 jb1.setBorder(null);//取消邊框
 jb1.setBorderPainted(false);//不繪制按鈕邊框
 jb1.setContentAreaFilled(false);//設(shè)置按鈕背景透明
 jb1.setFocusPainted(false);//設(shè)置按鈕不繪制焦點狀態(tài)
 accountPanel.add(jb1);
 
 
 //密碼面板
 PasswordPanel passwordPanel=new PasswordPanel(Color.LIGHT_GRAY,new Color(56,172,239));
 passwordPanel.setLayout(null);
 passwordPanel.setBounds(30, 45, 190, 30);
 frame.add( passwordPanel);
 
 //輸入密碼文本框
 JPasswordField passwordPF=new JPasswordField();
 passwordPF.setBounds(7, 0, 153, 30);
 passwordPF.setOpaque(false);
 passwordPF.setBorder(null);
 passwordPanel.add(passwordPF);
 
 //在賬號面板中的文本框后添加按鈕
 JButton jb2=new JButton(new ImageIcon(
  Demo1.class.getClassLoader().getResource("res/images/btn2.png")));
 jb2.setBounds(160, 0, 30, 30);
 jb2.setBorder(null);
 jb2.setBorderPainted(false);
 jb2.setContentAreaFilled(false);
 jb2.setFocusPainted(false);
 passwordPanel.add(jb2);
 
 
 //為賬號輸入框添加鼠標(biāo)監(jiān)聽器
 MouseAdapter accountListener=new MouseAdapter(){
  @Override
  public void mouseEntered(MouseEvent e) {
  // TODO Auto-generated method stub
  accountPanel.setBorder(true);
  accountPanel.updateUI();
  }
 
  @Override
  public void mouseExited(MouseEvent e) {
  // TODO Auto-generated method stub
  accountPanel.setBorder(false);
  accountPanel.updateUI();
  }
 };
 accountTF.addMouseListener(accountListener);
 jb1.addMouseListener(accountListener);
 
 
 //為密碼輸入框添加鼠標(biāo)監(jiān)聽器
 MouseAdapter passwordListener=new MouseAdapter(){
  @Override
  public void mouseEntered(MouseEvent e) {
  // TODO Auto-generated method stub
  passwordPanel.setBorder(true);
  passwordPanel.updateUI();
  }
 
  @Override
  public void mouseExited(MouseEvent e) {
  // TODO Auto-generated method stub
  passwordPanel.setBorder(false);
  passwordPanel.updateUI();
  }
 };
 passwordPF.addMouseListener(passwordListener);
 jb2.addMouseListener(passwordListener);
 
 
 frame.setVisible(true);
 }
 
}

自此，仿QQ登錄賬號密碼輸入框就完成了。

以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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