Java 在JPanel中添加鼠标单击图像
我第一次和Swing一起工作,遇到了一些问题。我有一个JFrame,它被分成四个JPanel。JFrame上有一个鼠标听筒,它的动作如下 单击时,如果单击位于左侧栏内,则确定正在选择13个图标中的哪一个。如果单击位于右侧的“游戏窗格”内&已选择图标,请将其放置在单击的位置 这是在这里完成的Java 在JPanel中添加鼠标单击图像,java,swing,graphics,paintcomponent,Java,Swing,Graphics,Paintcomponent,我第一次和Swing一起工作,遇到了一些问题。我有一个JFrame,它被分成四个JPanel。JFrame上有一个鼠标听筒,它的动作如下 单击时,如果单击位于左侧栏内,则确定正在选择13个图标中的哪一个。如果单击位于右侧的“游戏窗格”内&已选择图标,请将其放置在单击的位置 这是在这里完成的 @Override public void mouseClicked(MouseEvent event) { // TODO Auto-generated method stub xPos =
@Override
public void mouseClicked(MouseEvent event) {
// TODO Auto-generated method stub
xPos = event.getX();
yPos = event.getY()-25;
//If click is inside tool bar
if(xPos<=75){
if(yPos>-1 && yPos<48)
//First tool image
image = new ImageIcon(getClass().getResource(_image path_)).getImage();
else if(yPos>=48 && yPos<96)
//Second tool image
image = new ImageIcon(getClass().getResource(_image path_)).getImage();
else if(yPos>=96 && yPos<144)
//Third tool image
image = new ImageIcon(getClass().getResource(_image path_)).getImage();
else if(yPos>=144 && yPos<192)
//Fourth tool image
image = new ImageIcon(getClass().getResource(imagepath)).getImage();
else if(yPos>=192 && yPos<240)
//Fifth tool image
image = new ImageIcon(getClass().getResource(imagepath)).getImage();
else if(yPos>=240 && yPos<288)
//Sixth tool image
image = new ImageIcon(getClass().getResource(imagepath)).getImage();
else if(yPos>=288 && yPos<336)
//Seventh tool image
image = new ImageIcon(getClass().getResource(imagepath)).getImage();
else if(yPos>=336 && yPos<384)
//First NPC image
image = new ImageIcon(getClass().getResource(imagepath)).getImage();
else if(yPos>=384 && yPos<432)
//second NPC image
image = new ImageIcon(getClass().getResource(imagepath)).getImage();
else if(yPos>=432 && yPos<480)
//Third NPC image
image = new ImageIcon(getClass().getResource(imagepath)).getImage();
else if(yPos>=480 && yPos<528)
//First Decoration image
image = new ImageIcon(getClass().getResource(imagepath)).getImage();
else if(yPos>=528 && yPos<576)
//Second Decoration image
image = new ImageIcon(getClass().getResource(imagepath)).getImage();
else if(yPos>=576 && yPos<=625)
//Third Decoration image
image = new ImageIcon(getClass().getResource(imagepath)).getImage();
}
//If click is within Game Pane
else if (xPos>75 && yPos<625){
//A tool has been selected
if(image!=null){
placedTool = this.image;
this.image = null;
placeable = true;
}
}
//An image and location on the game pane has been selected
if(placeable && this.image==null){
ImageInfo newImg = new ImageInfo(xPos, yPos, image);
gamePane.additions.add(newImg);
gamePane.repaint();
System.out.println("IMAGE PLACED @ " + xPos + ", " + yPos);
placeable = false;
}
System.out.println("CLICK: (" + xPos + "," + yPos +")");
}
其中加法的定义如下
列表添加=新的ArrayList()
ImageInfo类只包含一个图像,一个x坐标和一个y坐标
public class ImageInfo {
private int x;
private int y;
private Image image;
public int getX() {
return x;
}
public int getY() {
return y;
}
public Image getImage() {
return image;
}
public ImageInfo(int x, int y, Image image) {
super();
this.x = x;
this.y = y;
this.image = image;
}
}
固定的:
谢谢你,mKorbel。通过定义mouseClicked方法之外的所有图像
Image tool1 = new ImageIcon(getClass().getResource(toolBar.TOOL1)).getImage();
Image tool2 = new ImageIcon(getClass().getResource(toolBar.TOOL2)).getImage();
Image tool3 = new ImageIcon(getClass().getResource(toolBar.TOOL3)).getImage();
Image tool4 = new ImageIcon(getClass().getResource(toolBar.TOOL4)).getImage();
Image tool5 = new ImageIcon(getClass().getResource(toolBar.TOOL5)).getImage();
Image tool6 = new ImageIcon(getClass().getResource(toolBar.TOOL6)).getImage();
Image tool7 = new ImageIcon(getClass().getResource(toolBar.TOOL7)).getImage();
Image npc1 = new ImageIcon(getClass().getResource(toolBar.NPC1)).getImage();
Image npc2 = new ImageIcon(getClass().getResource(toolBar.NPC2)).getImage();
Image npc3 = new ImageIcon(getClass().getResource(toolBar.NPC3)).getImage();
Image decor1 = new ImageIcon(getClass().getResource(toolBar.DECOR1)).getImage();
Image decor2 = new ImageIcon(getClass().getResource(toolBar.DECOR2)).getImage();
Image decor3 = new ImageIcon(getClass().getResource(toolBar.DECOR3)).getImage();
执行mouseClicked函数,如
@Override
public void mouseClicked(MouseEvent event) {
// TODO Auto-generated method stub
xPos = event.getX();
yPos = event.getY()-25;
//If click is inside tool bar
if(xPos<=75){
if(yPos>-1 && yPos<48)
//First tool image
image = tool1;
else if(yPos>=48 && yPos<96)
//Second tool image
image = tool2;
else if(yPos>=96 && yPos<144)
//Third tool image
image = tool3;
else if(yPos>=144 && yPos<192)
//Fourth tool image
image = tool4;
else if(yPos>=192 && yPos<240)
//Fifth tool image
image = tool5;
else if(yPos>=240 && yPos<288)
//Sixth tool image
image = tool6;
else if(yPos>=288 && yPos<336)
//Seventh tool image
image = tool7;
else if(yPos>=336 && yPos<384)
//First NPC image
image = npc1;
else if(yPos>=384 && yPos<432)
//second NPC image
image = npc2;
else if(yPos>=432 && yPos<480)
//Third NPC image
image = npc3;
else if(yPos>=480 && yPos<528)
//First Yard Decoration image
image = decor1;
else if(yPos>=528 && yPos<576)
//Second Yard Decoration image
image = decor2;
else if(yPos>=576 && yPos<=625)
//Third Yard Decoration image
image = decor3;
}
//If click is within Game Pane
else if (xPos>75 && yPos<625){
//A tool has been selected
if(image!=null){
placedTool = this.image;
this.image = null;
placeable = true;
}
}
if(placeable && this.image==null){
GamePiece newImg = new GamePiece(placedTool, xPos, yPos);
gamePane.additions.add(newImg);
gamePane.repaint();
System.out.println("IMAGE PLACED @ " + xPos + ", " + yPos);
placeable = false;
}
System.out.println("CLICK: (" + xPos + "," + yPos +")");
}
@覆盖
公共void mouseClicked(MouseEvent事件){
//TODO自动生成的方法存根
xPos=event.getX();
yPos=event.getY()-25;
//如果单击位于工具栏内
如果(xPos-1&&yPos=48&&yPos=96&&yPos=144&&yPos=192&&yPos=240&&yPos=288&&yPos=336&&yPos=384&&yPos=432&&yPos=480&&yPos=528&&yPos=576&&yPos=75&&yPos这看起来可疑:
if(placeable && this.image==null){
您没有在方法中声明image
,因此它与this.image
相同,因此只有当image==null
时,才会运行添加代码。您的意思可能是:
if (placeable && this.image != null) {
(我不知道可放置的的目的,所以我保留了原样)只有一个注释
发布一个简短的可运行、可编译的
为什么有yPos=event.getY()-25;
what逻辑表示-25处的整数
将所有ImageIcons
存储在局部变量中,将那些ImageIcons
存储在任何数组或List
中(如果存在固定逻辑而不是get坐标),然后加载image=new ImageIcon(getClass().getResource(
在paintComponent
中绘制,在运行时不提供任何文件IO
)
- 创建由
GridLayout
铺设的JLabel
网格,将MouseListener
添加到每个JLabel
s,更改JLabel.setIcon(myImageIcon)
中的鼠标事件,我缺少的其余逻辑没有SSCCE
比如说
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.Icon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.UIManager;
public class ChessBoard extends JFrame {
private JFrame frame = new JFrame();
private JPanel panel = new JPanel();
private Icon errorIcon = UIManager.getIcon("OptionPane.errorIcon");
private Icon infoIcon = UIManager.getIcon("OptionPane.informationIcon");
private Icon warnIcon = UIManager.getIcon("OptionPane.warningIcon");
private Icon questnIcon = UIManager.getIcon("OptionPane.questionIcon");
private JButton button = new JButton("Reset my board");
public ChessBoard() {
panel.setLayout(new GridLayout(8, 8, 0, 0));
for (int i = 0; i < 64; i++) {
final JLabel label = new JLabel();
label.setIcon(errorIcon);
label.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
if (e.getButton() == MouseEvent.BUTTON3) {
label.setIcon(infoIcon);
} else {
label.setIcon(warnIcon);
}
}
@Override
public void mouseEntered(MouseEvent me) {
label.setIcon(questnIcon);
}
});
panel.add(label);
}
button.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
for (Component c : panel.getComponents()) {
if (c instanceof JLabel) {
JLabel label = (JLabel) c;
label.setIcon(errorIcon);
}
}
}
});
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(panel);
frame.add(button, BorderLayout.SOUTH);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new ChessBoard();
}
});
}
}
导入java.awt.BorderLayout;
导入java.awt.Component;
导入java.awt.GridLayout;
导入java.awt.event.ActionEvent;
导入java.awt.event.ActionListener;
导入java.awt.event.MouseAdapter;
导入java.awt.event.MouseEvent;
导入javax.swing.Icon;
导入javax.swing.JButton;
导入javax.swing.JFrame;
导入javax.swing.JLabel;
导入javax.swing.JPanel;
导入javax.swing.UIManager;
公共类棋盘扩展JFrame{
私有JFrame=新JFrame();
private JPanel panel=new JPanel();
私有图标errorIcon=UIManager.getIcon(“OptionPane.errorIcon”);
私有图标infoIcon=UIManager.getIcon(“OptionPane.informationIcon”);
私有图标warnIcon=UIManager.getIcon(“OptionPane.warningIcon”);
私有图标questnIcon=UIManager.getIcon(“OptionPane.questionIcon”);
私有JButton按钮=新JButton(“重置我的板”);
公共棋盘(){
panel.setLayout(新的GridLayout(8,8,0,0));
对于(int i=0;i<64;i++){
最终JLabel标签=新的JLabel();
label.setIcon(错误图标);
label.addMouseListener(新的MouseAdapter(){
@凌驾
公共无效mouseClicked(MouseEvent e){
如果(例如getButton()==MouseEvent.BUTTON3){
label.setIcon(信息图标);
}否则{
label.setIcon(警告图标);
}
}
@凌驾
公共无效mouseenterned(MouseEvent me){
标签.设置图标(questnIcon);
}
});
面板。添加(标签);
}
addActionListener(新建ActionListener()){
@凌驾
已执行的公共无效操作(操作事件e){
对于(组件c:panel.getComponents()){
if(JLabel的c实例){
JLabel标签=(JLabel)c;
label.setIcon(错误图标);
}
}
}
});
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
框架。添加(面板);
框架。添加(按钮,边框布局。南);
frame.pack();
frame.setVisible(true);
}
公共静态void main(字符串[]args){
invokeLater(new Runnable()){
@凌驾
公开募捐{
新棋盘();
}
});
}
}
多亏@MadProgrammer提供了这段代码,他帮了我(这意味着他做了一切)
您可以查看他在此处发布的确切答案:
我不认为image==null真的是必要的,因为image被设置为null,而placeable被设置为true。我这样做只是出于预防。很抱歉,这有点让人困惑。但主要的问题是,我不能用添加的图像在背景图像上重新绘制。@user2307421我的意思是,代码导致图像永远不会被删除添加到gamePane.additions
,因为这是执行添加的块上的条件。我正在处理SSCE。但是为了回答第二点,我不确定为什么,但对于MouseListener,所有Y值都偏移了25。当我单击窗口最顶端的点时,它给出了25而不是0,所以我只是减去了这个偏移t、 可能重复的
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.Icon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.UIManager;
public class ChessBoard extends JFrame {
private JFrame frame = new JFrame();
private JPanel panel = new JPanel();
private Icon errorIcon = UIManager.getIcon("OptionPane.errorIcon");
private Icon infoIcon = UIManager.getIcon("OptionPane.informationIcon");
private Icon warnIcon = UIManager.getIcon("OptionPane.warningIcon");
private Icon questnIcon = UIManager.getIcon("OptionPane.questionIcon");
private JButton button = new JButton("Reset my board");
public ChessBoard() {
panel.setLayout(new GridLayout(8, 8, 0, 0));
for (int i = 0; i < 64; i++) {
final JLabel label = new JLabel();
label.setIcon(errorIcon);
label.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
if (e.getButton() == MouseEvent.BUTTON3) {
label.setIcon(infoIcon);
} else {
label.setIcon(warnIcon);
}
}
@Override
public void mouseEntered(MouseEvent me) {
label.setIcon(questnIcon);
}
});
panel.add(label);
}
button.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
for (Component c : panel.getComponents()) {
if (c instanceof JLabel) {
JLabel label = (JLabel) c;
label.setIcon(errorIcon);
}
}
}
});
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(panel);
frame.add(button, BorderLayout.SOUTH);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new ChessBoard();
}
});
}
}
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.sound.sampled.*;
import javax.swing.*;
import sun.audio.*;
public class SHR {
public static void main(String[] args) {
new SHR();
}
public SHR() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("To Battle");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new ToBattle());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class ToBattle extends JPanel {
private BufferedImage image;
private Point drawPoint;
public ToBattle() {
try {
image = ImageIO.read(getClass().getResource("SilverHandRecruit.png"));
addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
drawPoint = new Point(e.getPoint());
repaint();
}
});
} catch (IOException ex) {
ex.printStackTrace();
}
}
@Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g.create();
if (drawPoint != null) {
g2d.drawImage(image, drawPoint.x - 100, drawPoint.y - 100, this);
}
g2d.dispose();
}
}
}