使用图像的Java JProgressBar
我正在用Java制作一个游戏,我正在使用使用图像的Java JProgressBar,java,image,swing,jprogressbar,game-development,Java,Image,Swing,Jprogressbar,Game Development,我正在用Java制作一个游戏,我正在使用JProgressBar作为健康栏。我想为JProgressBar使用图像(而不是颜色),但我一直无法做到这一点。我尝试过使用paint方法,paintComponent方法创建一个新类,但它不起作用。有人能帮我吗?不必创建自己的ProgressBarUI实现,您只需创建自己的 本例实质上是从单个药剂图像中生成“药剂条”,然后根据当前进度渲染子图像 它不会花太多的时间让它只显示整个药剂而不是 import java.awt.Color; import ja
JProgressBar
作为健康栏。我想为JProgressBar
使用图像(而不是颜色),但我一直无法做到这一点。我尝试过使用paint方法,paintComponent
方法创建一个新类,但它不起作用。有人能帮我吗?不必创建自己的ProgressBarUI
实现,您只需创建自己的
本例实质上是从单个药剂图像中生成“药剂条”,然后根据当前进度渲染子图像
它不会花太多的时间让它只显示整个药剂而不是
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.text.NumberFormat;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.Timer;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class ProgressPane {
public static void main(String[] args) {
new ProgressPane();
}
public ProgressPane() {
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 GridBagLayout());
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
private float progress = 1f;
private BufferedImage potion;
private BufferedImage potionBar;
public TestPane() {
try {
potion = ImageIO.read(getClass().getResource("/Potion.png"));
} catch (IOException ex) {
ex.printStackTrace();
}
setOpaque(false);
setForeground(Color.BLUE);
setBackground(Color.GRAY);
Timer timer = new Timer(500, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
progress -= 0.01;
if (progress <= 0.001) {
((Timer) e.getSource()).stop();
}
repaint();
}
});
timer.setRepeats(true);
timer.setCoalesce(true);
timer.start();
}
@Override
public void invalidate() {
super.invalidate();
potionBar = null;
}
@Override
public Dimension getPreferredSize() {
FontMetrics fm = getFontMetrics(getFont());
return new Dimension(200, Math.max(50, fm.getHeight() + 4));
}
protected void createPotionBar() {
if (potionBar == null) {
if (getWidth() > 0 && getHeight() > 0) {
FontMetrics fm = getFontMetrics(getFont());
int height = Math.max(50, fm.getHeight() + 4);
potionBar = new BufferedImage(getWidth() - 4, height, BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = potionBar.createGraphics();
int x = 0;
int y = (height - potion.getHeight()) / 2;
while (x < getWidth() - 4) {
g2d.drawImage(potion, x, y, this);
x += potion.getWidth();
}
g2d.dispose();
}
}
}
@Override
protected void paintComponent(Graphics g) {
createPotionBar();
super.paintComponent(g);
int width = getWidth() - 4;
int height = getHeight() - 4;
int x = 2;
int y = 2;
g.setColor(getBackground());
g.fillRect(x, y, width, height);
g.setColor(Color.BLACK);
g.drawRect(x, y, width, height);
int progressWidth = (int) (width * progress);
BufferedImage progressImage = potionBar.getSubimage(0, 0, progressWidth, potionBar.getHeight());
g.drawImage(progressImage, x, y, this);
FontMetrics fm = g.getFontMetrics();
String value = NumberFormat.getPercentInstance().format(progress);
x = x + ((width - fm.stringWidth(value)) / 2);
y = y + ((height - fm.getHeight()) / 2);
g.setColor(Color.WHITE);
g.drawString(value, x, y + fm.getAscent());
}
}
}
导入java.awt.Color;
导入java.awt.Dimension;
导入java.awt.EventQueue;
导入java.awt.FontMetrics;
导入java.awt.Graphics;
导入java.awt.Graphics2D;
导入java.awt.GridBagLayout;
导入java.awt.event.ActionEvent;
导入java.awt.event.ActionListener;
导入java.awt.image.buffereImage;
导入java.io.IOException;
导入java.text.NumberFormat;
导入javax.imageio.imageio;
导入javax.swing.JFrame;
导入javax.swing.JPanel;
导入javax.swing.Timer;
导入javax.swing.UIManager;
导入javax.swing.UnsupportedLookAndFeelException;
公共类进度窗格{
公共静态void main(字符串[]args){
新的ProgressPane();
}
公共进度窗格(){
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GridBagLayout());
frame.add(newtestpane());
frame.pack();
frame.setLocationRelativeTo(空);
frame.setVisible(true);
}
});
}
公共类TestPane扩展了JPanel{
私人浮动进度=1f;
私人缓冲药水;
专用缓冲区映像药剂棒;
公共测试窗格(){
试一试{
potion=ImageIO.read(getClass().getResource(“/potion.png”);
}捕获(IOEX异常){
例如printStackTrace();
}
设置不透明(假);
设置前景(颜色:蓝色);
挫折背景(颜色:灰色);
计时器计时器=新计时器(500,新ActionListener(){
@凌驾
已执行的公共无效操作(操作事件e){
进度-=0.01;
如果(进度0&&getHeight()>0){
FontMetrics fm=getFontMetrics(getFont());
int height=Math.max(50,fm.getHeight()+4);
potionBar=新的BuffereImage(getWidth()-4,高度,BuffereImage.TYPE_INT_ARGB);
Graphics2D g2d=potionBar.createGraphics();
int x=0;
int y=(height-potion.getHeight())/2;
而(x
如果您只是在介绍它,为什么不直接使用JLabel?我是否可以设置JLabel的大小,使其看起来像一个健康栏?为了更快地获得更好的帮助,请发布一条。+1 ooh我喜欢…:)很适合玩游戏,更好的是,我不必编写它,只需将其撕开:P有可能使前景成为另一幅图像吗?因此,红色药剂图像会被蓝色药剂图像或类似图像重叠?我意识到前景已经是一幅缓冲图像
,但它被构造为一幅空白图像(或者看起来是这样)。