Groups > comp.lang.java.programmer > #36070

Re: When resizing text to fill a JLabel the text sometimes "jiggles", how do I fix this?

From	Knute Johnson <nospam@rabbitbrush.frazmtn.com>
Newsgroups	comp.lang.java.programmer
Subject	Re: When resizing text to fill a JLabel the text sometimes "jiggles", how do I fix this?
Date	2016-12-08 15:30 -0600
Organization	A noiseless patient Spider
Message-ID	<o2cjas$2ag$1@dont-email.me> (permalink)
References	<75624c6e-6a78-4e8a-82a4-4ff2556cc241@googlegroups.com> <f5777763-3658-4b03-b122-711f15545d7f@googlegroups.com>

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On 12/8/2016 14:48, The Kreepy Gamer wrote:
> If this is what you meant, I have added more code so it can be more easily compiled.
>
> public static void main(String[] args) {
>         JFrame window = new JFrame();
>         JLabel label = new JLabel("Hey! That's pretty good!");
>         window.add(label);
>         window.setSize(300,300);
>         label.setFont(getMaxFontSize(label,label.getText()));
>         window.setVisible(true);
> }
>
> public static Font getMaxFontSize(Component comp, String text) {
>         Font compFont = comp.getFont();
>         String compText = text;
>         int stringWidth = questionLabel.getFontMetrics(compFont).stringWidth(compText);
>         int compWidth = comp.getWidth()-75;
>
>         if (stringWidth == 0) {
>                 stringWidth++;
>         }
>         double widthRatio = (double)compWidth / (double)stringWidth;
>
>         int newFontSize = (int)(compFont.getSize() * widthRatio);
>         int compHeight = comp.getHeight();
>
>         int fontSizeToUse = Math.min(newFontSize, compHeight);
>
>         if (fontSizeToUse < 1) {
>                 return new Font(compFont.getName(), Font.PLAIN, 1);
>         }
>         return new Font(compFont.getName(), Font.PLAIN, fontSizeToUse);
> }
>

That can't be compiled and that's one reason you aren't getting any 
answers.  See http://mindprod.com/jgloss/sscce.html.

Since your code above won't compile as it is, I'm not sure if the fact 
that you appear to be creating your GUI on a thread other than the Event 
Dispatch Thread (EDT) is the problem.  Swing components must be created 
and most component methods must be called from the EDT.  Not doing so 
can cause unending problems with your program.

So give us an SSCCE and I'm sure that you will get an answer to your 
problem.

-- 

Knute Johnson

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