Java-有没有办法在JList中插入背景图像?
JLists没有为此提供方法,这是非常令人遗憾的。你知道怎么做吗?固定位置列表(即图像是固定的,但你可以滚动列表)Java-有没有办法在JList中插入背景图像?,java,swing,background-image,jlist,Java,Swing,Background Image,Jlist,JLists没有为此提供方法,这是非常令人遗憾的。你知道怎么做吗?固定位置列表(即图像是固定的,但你可以滚动列表) 导入java.awt.BorderLayout; 导入java.awt.Color; 导入java.awt.Dimension; 导入java.awt.EventQueue; 导入java.awt.Graphics; 导入java.awt.Graphics2D; 导入java.awt.image.buffereImage; 导入java.io.File; 导入java.io.IO
导入java.awt.BorderLayout;
导入java.awt.Color;
导入java.awt.Dimension;
导入java.awt.EventQueue;
导入java.awt.Graphics;
导入java.awt.Graphics2D;
导入java.awt.image.buffereImage;
导入java.io.File;
导入java.io.IOException;
导入javax.imageio.imageio;
导入javax.swing.JFrame;
导入javax.swing.JList;
导入javax.swing.JPanel;
导入javax.swing.JScrollPane;
导入javax.swing.UIManager;
导入javax.swing.UnsupportedLookAndFeelException;
公开课背景列表{
公共静态void main(字符串[]args){
新背景列表();
}
公众背景名单(){
invokeLater(新的Runnable(){
@凌驾
公开募捐{
试一试{
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}catch(ClassNotFoundException |实例化Exception | IllegalacessException |不支持ookandfeelException ex){
}
JFrame=新JFrame(“测试”);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(新的BorderLayout());
frame.add(newtestpane());
frame.pack();
frame.setLocationRelativeTo(空);
frame.setVisible(true);
}
});
}
公共类TestPane扩展了JPanel{
私人名单;
私有缓冲图像背景;
公共测试窗格(){
setLayout(新的BorderLayout());
试一试{
background=ImageIO.read(新文件(“C:\\Users\\shane\\Dropbox\\MegaTokyo\\\\u cg\u 836\uuuuuuuuuuuuuuuuuuuuuuu倾斜式风车\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu;
}捕获(IOEX异常){
例如printStackTrace();
}
整数计数=50;
字符串[]值=新字符串[计数];
for(int index=0;index
可滚动背景。。。
基本上,图像将与列表一起“滚动”
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class BackgroundList {
public static void main(String[] args) {
new BackgroundList();
}
public BackgroundList() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
private JList list;
private BufferedImage background;
public TestPane() {
setLayout(new BorderLayout());
try {
background = ImageIO.read(new File("C:\\Users\\shane\\Dropbox\\MegaTokyo\\_cg_836___Tilting_Windmills___by_Serena_Clearwater.png"));
} catch (IOException ex) {
ex.printStackTrace();
}
int count = 50;
String[] values = new String[count];
for (int index = 0; index < count; index++) {
values[index] = "Testing " + (index + 1);
}
list = new BackgroundImageList(values);
JScrollPane scrollPane = new JScrollPane(list);
scrollPane.setOpaque(false);
scrollPane.getViewport().setOpaque(false);
add(scrollPane);
}
}
public class BackgroundImageList extends JList {
private BufferedImage background;
public BackgroundImageList(Object[] values) {
super(values);
try {
background = ImageIO.read(new File("C:\\Users\\shane\\Dropbox\\MegaTokyo\\_cg_836___Tilting_Windmills___by_Serena_Clearwater.png"));
} catch (IOException ex) {
ex.printStackTrace();
}
setOpaque(false);
setBackground(new Color(0, 0, 0, 0));
setForeground(Color.WHITE);
}
@Override
protected void paintComponent(Graphics g) {
if (background != null) {
Graphics2D g2d = (Graphics2D) g.create();
int x = getWidth() - background.getWidth();
int y = getHeight() - background.getHeight();
g2d.drawImage(background, x, y, this);
g2d.dispose();
}
super.paintComponent(g);
}
}
}
导入java.awt.BorderLayout;
导入java.awt.Color;
导入java.awt.Dimension;
导入java.awt.EventQueue;
导入java.awt.Graphics;
导入java.awt.Graphics2D;
导入java.awt.image.buffereImage;
导入java.io.File;
导入java.io.IOException;
导入javax.imageio.imageio;
导入javax.swing.JFrame;
导入javax.swing.JList;
导入javax.swing.JPanel;
导入javax.swing.JScrollPane;
导入javax.swing.UIManager;
导入javax.swing.UnsupportedLookAndFeelException;
公开课背景列表{
公共静态void main(字符串[]args){
新背景列表();
}
公众背景名单(){
invokeLater(新的Runnable(){
@凌驾
公开募捐{
试一试{
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}catch(ClassNotFoundException |实例化Exception | IllegalacessException |不支持ookandfeelException ex){
}
JFrame=新JFrame(“测试”);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(新的BorderLayout());
frame.add(newtestpane());
frame.pack();
frame.setLocationRelativeTo(空);
frame.setVisible(true);
}
});
}
公共类TestPane扩展了JPanel{
私人名单;
私有缓冲图像背景;
公共测试窗格(){
setLayout(新的BorderLayout());
试一试{
background=ImageIO.read(新文件(“C:\\Users\\shane\\Dropbox\\MegaTokyo\\\\u cg\u 836\uuuuuuuuuuuuuuuuuuuuuuu倾斜式风车\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu;
}捕获(IOEX异常){
例如printStackTrace();
}
整数计数=50;
字符串[]值=新字符串[计数];
for(int index=0;indeximport java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class BackgroundList {
public static void main(String[] args) {
new BackgroundList();
}
public BackgroundList() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
private JList list;
private BufferedImage background;
public TestPane() {
setLayout(new BorderLayout());
try {
background = ImageIO.read(new File("C:\\Users\\shane\\Dropbox\\MegaTokyo\\_cg_836___Tilting_Windmills___by_Serena_Clearwater.png"));
} catch (IOException ex) {
ex.printStackTrace();
}
int count = 50;
String[] values = new String[count];
for (int index = 0; index < count; index++) {
values[index] = "Testing " + (index + 1);
}
list = new BackgroundImageList(values);
JScrollPane scrollPane = new JScrollPane(list);
scrollPane.setOpaque(false);
scrollPane.getViewport().setOpaque(false);
add(scrollPane);
}
}
public class BackgroundImageList extends JList {
private BufferedImage background;
public BackgroundImageList(Object[] values) {
super(values);
try {
background = ImageIO.read(new File("C:\\Users\\shane\\Dropbox\\MegaTokyo\\_cg_836___Tilting_Windmills___by_Serena_Clearwater.png"));
} catch (IOException ex) {
ex.printStackTrace();
}
setOpaque(false);
setBackground(new Color(0, 0, 0, 0));
setForeground(Color.WHITE);
}
@Override
protected void paintComponent(Graphics g) {
if (background != null) {
Graphics2D g2d = (Graphics2D) g.create();
int x = getWidth() - background.getWidth();
int y = getHeight() - background.getHeight();
g2d.drawImage(background, x, y, this);
g2d.dispose();
}
super.paintComponent(g);
}
}
}