CODEWITHSUNDEEP
javaswing
user1850337
user1850337

Reputation: 109

Need help about drawing on JTextPane

I'm using JTextPane and JButton

If I click the Button, I hope every characters in JTextPane will have a dot under it

e.g

Is there any way to do this?

The big problem is how to add dots under every characters :(

Upvotes: 2

Views: 210

Answers (3)

StanislavL
StanislavL

Reputation: 57391

http://java-sl.com/tip_colored_strikethrough.html you can use the example of colored strikethrough.

All you need is to draw your line under letters. Just set Stroke to your Graphics2D instance. (See BasicStroke and dash pattern)

Upvotes: 1

FThompson
FThompson

Reputation: 28687

You can make use of javax.swing.text.DefaultHighlighter, which handles character spacing of a text component in order to do background painting on that component.

public class DotHighlighter extends DefaultHighlighter {
    // implementation
}

Implementing a custom highlighter is a moderate sized amount of work, but here's a nice code example of an underlining highlighter implementation; you should be able to modify it to draw dots.

Upvotes: 1

username tbd
username tbd

Reputation: 9382

Are you using a monospaced font? If so, it would be possible to create a new label and display a string that is composed only of periods (of the same length as the string in the original label), and display that label a bit lower than the first.

I.E., if your label says 2446, then you could make a second label that's 5 or 10 pixels lower, which says .....

Again, this will only work with a monospaced font- for any other fonts, it would still be possible, but it would involve a more complicated solution (looping through each character, finding its location, and then managing to display a dot beneath it), I believe.

Upvotes: 0

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