Java开发网 - 控制JLabel，JButton上文字的格式，换行显示。

Topic: 控制JLabel，JButton上文字的格式，换行显示。

1.控制JLabel，JButton上文字的格式，换行显示。

Posted by: scottding
Posted on: 2002-12-02 13:25

上次和朋友说到要在Label上或者Button上或者messagedialog换行显示文本，或者格式化文本，当时没有什么很好的解决办法，最近看到一些资料，但是还没有找全，和大家共同讨论一下，在Java中的显示的文本是支持html标签的，我们可以控制string为html文本，如果这样的话就可以格式化显示我们所要求输出的文字，比如，我们可以给出一个String str＝"<html>test1tatatatatattest2</html>"大家可以把这个string set到你的Label或者Button或者dialog上，你可以看到什么效果？？呵呵，你还可以控制这些代码以得到你想要的一些效果，如果哪位朋友有更多的资料希望能够共同讨论。

2.Works for the tooltip as well [Re: scottding]	Copy to clipboard
Posted by: snowbug Posted on: 2002-12-02 22:59 This trick works for the popup tooltips as well.

3.Re:控制JLabel，JButton上文字的格式，换行显示。 [Re: scottding]	Copy to clipboard
Posted by: floater Posted on: 2002-12-09 22:40 However, the image tag seems not working, even though some books claim it should work. Anyone tried before?

4.Re:控制JLabel，JButton上文字的格式，换行显示。 [Re: floater]

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Posted by: snowbug
Posted on: 2002-12-09 23:08

floater wrote:
However, the image tag seems not working, even though some books claim it should work.

Anyone tried before?

I don't think the img tag can work because image requires different painting mechanism in Swing. However, I think if the requirements gets too complex for this trick to work, you can always write you own class to do the job Smile

5.Re:控制JLabel，JButton上文字的格式，换行显示。 [Re: scottding]

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Posted by: floater
Posted on: 2002-12-10 01:01

In John Zukowski's book "Definitive Guide to Swing for Java 2", 2nd edition, he said it will work, but then he turns to a customized rendering class. That's why I am wondering ...

I tried before, it gave me a broken image icon(like in browser). I thought maybe I put image files in wrong place, so I put it in everywhere along the path from the root. But still the same...

6.It worked! [Re: scottding]

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Posted by: snowbug
Posted on: 2002-12-10 02:06

It actually works!!

Here is the code:


import javax.swing.*;
import java.awt.*;

public class Test extends JFrame{

    public Test(){
        getContentPane().add(new JButton("<html><font color=red>Red</font><img src=\"http://www.cjsdn.com/images/faces/face_aplomadofalcon.gif\"</img></html>"), BorderLayout.CENTER);
        pack();
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true);
    }

    public static void main(String[] args) {
        new Test();
    }
}

I think you have to use HTTP reference for the image you want to display.

7.Re:控制JLabel，JButton上文字的格式，换行显示。 [Re: scottding]	Copy to clipboard
Posted by: floater Posted on: 2002-12-10 05:06 hehe, that's interesting. I didn't try this before, launching a web server. Ideally, we should make it work without a webserver. It would be a little bit demanding for a swing application to have a web server up and running, . But it's something.

8.Re:控制JLabel，JButton上文字的格式，换行显示。 [Re: scottding]	Copy to clipboard
Posted by: scottding Posted on: 2002-12-10 09:33 呵呵，这个东西真是太神奇了，不知哪位可以提供一点详细的资料？