icon

[sara]

Hi!

Is there a way to add icons on the side of the RSyntaxTextArea?
I want to mark some of the lines - by adding an icon near it, in the matching line.
(like eclipse does for breakpoints, compilations problems).

thanks.

[robert]

Sure there is. To do this you use the Gutter component of the RTextScrollPane:

Code: Select all

scrollPane.setIconAreaEnabled(true);
Gutter gutter = scrollPane.getGutter();
GutterIconInfo info = gutter.addLineTrackingIcon(line, icon);


You can also use addOffsetTrackingIcon() if the icon should track a particular offset in the line.

Call removeTrackingIcon(GutterIconInfo) to remove an icon you've added.

[sara]

hi!

I cant find the setIconAreaEnabled -
do you mean: setIconRowHeaderEnabled?

[robert]

Yes, sorry, I was recalling the methods from memory. Call setIconRowHeaderEnabled(true), otherwise any icons you add simply won't be rendered, since the row header won't be visible to see them.

Post back if you have any more questions!

[sara]

Hi!

I have another question....
I need to know how many rows the icon "moved".
lets say, if i put the icon in line number 5, and the user entered more 4 rows before the icon - the icon will be now in line 9 (its moving with rows).
can I know what line the icon is now? or how many rows it moved?

thanks!

[robert]

Yes, you can know what line the icon is now on if you keep a reference to the GutterIconInfo you got when you added it:

Code: Select all

GutterIconInfo info = ...;

// ...

// Get the document offset the icon is currently at (the first offset of the line, if
// it was added via addLineTrackingIcon()).
int offs = info.getMarkedOffset();

// Use the text area it was added to to get the line of the offset.
int line = textArea.getLineOfOffset(offs);