blocks|key|1122551|text|您已经查看了HierarchyListener，在那里您可以通过与HierarchyBoundsListener的接口侦听HierarchyEvent|type|unordered-list-item|depth|inlineStyleRanges|entityRanges|offset|length|data|1122552|ComponentListener基本上没有什么问题，但是您必须将预期的事件包装到Swing+Timer，在事件重复的情况下，只能调用Timer#restart()，来自Swing+Timer的输出应该是Swing+Action。|style|CODE|1122553|unstyled|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.oracle.com/javase/6/docs/api/java/awt/event/HierarchyListener.html|1|http://docs.oracle.com/javase/6/docs/api/java/awt/event/HierarchyBoundsListener.html|2|http://docs.oracle.com/javase/6/docs/api/java/awt/event/HierarchyEvent.html^0|6|H|0|X|N|1|1P|E|2|0|0|H|15|B|1V|F|2D|B|2U|C|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]|$A|Y|B|Z|1|10]|$A|11|B|12|1|13]]|C|$]]|$1|D|3|E|5|6|7|14|8|@$A|15|B|16|F|G]|$A|17|B|18|F|G]|$A|19|B|1A|F|G]|$A|1B|B|1C|F|G]|$A|1D|B|1E|F|G]]|9|@]|C|$]]|$1|H|3|-4|5|I|7|1F|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]|Q|$5|L|M|N|C|$O|R]]|S|$5|L|M|N|C|$O|T]]]]

<ul>
<li>you have look at <a href="http://docs.oracle.com/javase/6/docs/api/java/awt/event/HierarchyListener.html" rel="nofollow">HierarchyListener</a>, where you can listening for <a href="http://docs.oracle.com/javase/6/docs/api/java/awt/event/HierarchyEvent.html" rel="nofollow">HierarchyEvent</a> with interface to <a href="http://docs.oracle.com/javase/6/docs/api/java/awt/event/HierarchyBoundsListener.html" rel="nofollow">HierarchyBoundsListener</a></li>
<li>basically nothing wrong with <code>ComponentListener</code>, but you have to wrapping expected events to the <code>Swing Timer</code>, in the case that events repeated, only to call <code>Timer#restart()</code>, output from <code>Swing Timer</code> should be <code>Swing Action</code> </li>
</ul>

blocks|key|552025|text|与每次收到接收事件时开始计算不同，您只能在收到最后一个事件后使用计时器启动计算，例如使用伪代码(或者至少是我在这里直接输入的代码，而不是在IDE中输入的代码)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|552026|private+Timer+recalculateTimer+=+new+Timer(+20,+myRecalculateActionListener+);

constructor(){
++recalculateTimer.setRepeats(+false+);
}
@Override
public+void+componentResized(ComponentEvent+e){
++if+(+recalculateTimer.isRunning()+){
++++recalculateTimer.restart();
++}+else+{
++++recalculateTimer.start();
++}
}|code-block|syntax|javascript|552027|你仍然可以把它和安德鲁斯的建议结合起来，使用一张图片，直到计算完成为止。|552028|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Instead of starting the calculation each time you receive a receive-event, you can only start the calculation after you received the last event by using a timer, e.g. in pseudo-code (or at least code which I typed here directly and not in my IDE)

<pre><code>private Timer recalculateTimer = new Timer( 20, myRecalculateActionListener );

constructor(){
 recalculateTimer.setRepeats( false );
}
@Override
public void componentResized(ComponentEvent e){
 if ( recalculateTimer.isRunning() ){
 recalculateTimer.restart();
 } else {
 recalculateTimer.start();
 }
}
</code></pre>

And you can still combine this with Andrews suggestion to use an image which you stretch until the calculation has actually finished.

blocks|key|553787|text|现在有点晚了，但似乎没有人找到正确的答案。我发现，当您在窗口的一个child.updateUI()+(componentResized块)中调用它时，这个子窗口会调整它的大小并更新它的内容。使用计时器是不安全的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|553788|entityMap^0|X|G|1F|G|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

It's a bit late, but it looks like no one found the correct answer. I found that when you call <code>child.updateUI()</code> inside a ComponentListener (<code>componentResized</code> block) of a window, this child resizes it self and updates its content. Using timers is unsafe.

I have a fractal generation component (a subclass of JPanel) inside a JFrame. When the user resizes the window, it takes quite a while to update the fractal to the new size.

I currently have a ComponentListener on the JPanel, but its componentResized event is called every time the user moves the mouse while dragging the window border. This means that the fractal is told to resize many times, and slowly (over the course of a few minutes) grows to the new size.

Is there a way to be notified when the user releases the mouse button, so that I can only change the fractal size when the user has finished resizing?

Others have <a href="https://stackoverflow.com/questions/3919214/java-jframe-resizing">reported</a> this happening when the listener is attached to the JFrame instead, but this doesn't work for me (and <a href="https://stackoverflow.com/questions/2340987/java-swing-do-something-when-a-component-has-finished-resizing">others</a>), for some reason.

Get notified when the user finishes resizing a JFrame

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个分形生成组件(JPanel的一个子类)在一个JFrame中。当用户调整窗口大小时，需要很长时间才能将分形更新到新的大小。我目前在ComponentListener上有一个JPanel，但是每次用户拖动窗口边框时都会调用它的componentResized事件。这意味着分形被告知要多次调整大小，并且缓慢地(在几分...

问当用户完成调整JFrame大小时收到通知
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问当用户完成调整JFrame大小时收到通知EN