突出显示Java中的单词 [英] highlighting words in java
本文介绍了突出显示Java中的单词的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想突出显示单词，在特定的时间(就像在karaoke应用程序中一样). 每个单词都会有一个特定的时间突出显示.我能够把握时机，但是却无处可寻.如何在一个特定的持续时间内突出显示一个单词.在stackoverflow和google上进行了大量搜索，但死胡同. 我可以采取Java脚本或HTML的帮助吗? 请帮帮我. 这是我如何计时的一段代码:
I wanted to highlight the words,for a specific time (just like in karaoke apps). each word will have a specific time for highlighting.i am able to take timings,but getting no where .How to highlight a word for a perticular duration.searched alot on stackoverflow and google,but dead end. and can i take help of java script or html?? please help me out. here is a piece of code how i am taking timing:
millis mil=new millis();
if(true){
if(flag==1)
flag=0;
else flag=1;
if(flag==0)
value=mil.done(flag,start);
start=value;
if(flag==1)
value=mil.done(flag,start);//function to calculate duration
}System.out.println("val:"+(value-3086610));
// System.out.println("gyjghjghjghj"+(System.nanoTime()-start2));
String s = textArea.getText();
char[] words=s.toCharArray();
for(i=last;words[i]!=' '&&words[i]!='\n';i++,last=i)
{
}
try {//System.out.println(acount);
hilit.addHighlight(first, last, painter);
last++; first=last;
} catch (BadLocationException ex) {
Logger.getLogger(newh.class.getName()).log(Level.SEVERE, null, ex);
}
这就是我能够为每个单词计时的方式.
谢谢.
this is how i am able to time each word.
thank you.
推荐答案
+1以StanislavL的答案.
+1 to StanislavL answer.
有一个简短的示例希望对您有所帮助.
Did a short example hope it helps.
我在这里创建我的单词及其时机:
Here I create my words and their timings:
int[] timings = {2000, 1000, 4000};
String[] words = new String[]{"Hello", "java", "whoooooh"};
单击开始按钮后:
在2000毫秒后:
1000之后:
4000毫秒后:
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JTextPane;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
import javax.swing.text.BadLocationException;
import javax.swing.text.DefaultHighlighter;
public class KaraokeTest {
private int[] timings = {2000, 1000, 4000};
private String[] words = new String[]{"Hello", "java", "whoooooh"};
private DefaultHighlighter.DefaultHighlightPainter highlightPainter = new DefaultHighlighter.DefaultHighlightPainter(Color.GREEN);
private int count = 0;
private boolean fisrTime = true;
private JFrame frame;
private JTextPane jtp;
JButton startButton;
public KaraokeTest() {
initComponents();
}
private void initComponents() {
frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setResizable(false);
jtp = new JTextPane();
for (String s : words) {
String tmp = jtp.getText();
if (tmp.equals("")) {
jtp.setText(s);
} else {
jtp.setText(tmp + " " + s);
}
}
startButton = new JButton("Start");
startButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
startKaraoke();
}
});
frame.add(jtp, BorderLayout.CENTER);
frame.add(startButton, BorderLayout.SOUTH);
frame.pack();
frame.setVisible(true);
}
private void startKaraoke() {
if (fisrTime) {
startButton.setEnabled(false);
fisrTime = false;
}
new Thread(new Runnable() {
@Override
public void run() {
Timer t = createAndStartTimer(timings[count], count);
while (t.isRunning()) {//wait for timer to be done
try {
Thread.sleep(1);
} catch (InterruptedException ex) {
ex.printStackTrace();
}
}
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
count++;
if (count == timings.length) {
JOptionPane.showMessageDialog(frame, "Done");
startButton.setEnabled(true);
count = 0;
} else {
startKaraoke();
}
}
});
}
}).start();
}
private Timer createAndStartTimer(int delay, final int count) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
int sp = 0;
for (int i = 0; i < count; i++) {
sp += words[i].length() + 1;
}
try {
jtp.getHighlighter().addHighlight(sp, sp + words[count].length(), highlightPainter);
} catch (BadLocationException ex) {
ex.printStackTrace();
}
}
});
Timer t = new Timer(delay, new AbstractAction() {
@Override
public void actionPerformed(ActionEvent ae) {
jtp.getHighlighter().removeAllHighlights();
}
});
t.setRepeats(false);
t.start();
return t;
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new KaraokeTest();
}
});
}
}
更新:
修复了上面的代码，可以在指定的时间内突出显示句子中的各个字符:
Fixed the above code to be able to highlight individual characters within the sentence for a specified amount of time:
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JTextPane;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
import javax.swing.text.BadLocationException;
import javax.swing.text.DefaultHighlighter;
public class KaraokeTest {
private int[] timings = {2000, 1000, 4000, 2000, 3000};//char timings
private String[] words = {"H", "e", "l", "l", "o"};//each indiviaul word
private String sentence = "Hello";//entire string for writing to JSCrollPane
private DefaultHighlighter.DefaultHighlightPainter highlightPainter = new DefaultHighlighter.DefaultHighlightPainter(Color.GREEN);
private int count = 0;
private boolean fisrTime = true;
private JFrame frame;
private JTextPane jtp;
JButton startButton;
public KaraokeTest() {
initComponents();
}
private void initComponents() {
frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setResizable(false);
jtp = new JTextPane();
jtp.setText(sentence);
startButton = new JButton("Start");
startButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
startKaraoke();
}
});
frame.add(jtp, BorderLayout.CENTER);
frame.add(startButton, BorderLayout.SOUTH);
frame.pack();
frame.setVisible(true);
}
private void startKaraoke() {
if (fisrTime) {
startButton.setEnabled(false);
fisrTime = false;
}
new Thread(new Runnable() {
@Override
public void run() {
Timer t = createAndStartTimer(timings[count], count);
while (t.isRunning()) {//wait for timer to be done
try {
Thread.sleep(1);
} catch (InterruptedException ex) {
ex.printStackTrace();
}
}
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
count++;
if (count == timings.length) {
JOptionPane.showMessageDialog(frame, "Done");
startButton.setEnabled(true);
count = 0;
fisrTime = true;
} else {
startKaraoke();
}
}
});
}
}).start();
}
private Timer createAndStartTimer(int delay, final int count) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
int sp = 0;
for (int i = 0; i < count; i++) {
sp += words[i].length();
}
try {
jtp.getHighlighter().addHighlight(sp, sp + words[count].length(), highlightPainter);
} catch (BadLocationException ex) {
ex.printStackTrace();
}
}
});
Timer t = new Timer(delay, new AbstractAction() {
@Override
public void actionPerformed(ActionEvent ae) {
jtp.getHighlighter().removeAllHighlights();
}
});
t.setRepeats(false);
t.start();
return t;
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new KaraokeTest();
}
});
}
}
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