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Java Forum / GUI / May 2006Get track size/location from JScrollBar
Hi, I am in need of retrieving the track size of a vertical JScrollBar, in particular its height. Also, I would need to get hold on where the track starts within the scrollbar, I guess this could be calculated by getting the upper arrow button and query it for its height. Now, I've checked the API but no luck, is this possible? Kind Regards, Robert > I am in need of retrieving the track size of a vertical > JScrollBar, [...] > Now, I've checked the API but no luck, is this possible? My guess, I didn't look it up, would be that this stuff is hard-coded somewhere in each PLAF. And that there is no API, probably not even an undocumented, to obtain this information. Why do you think you need to know this? /Thomas  SignatureThe comp.lang.java.gui FAQ: ftp://ftp.cs.uu.nl/pub/NEWS.ANSWERS/computer-lang/java/gui/faq http://www.uni-giessen.de/faq/archiv/computer-lang.java.gui.faq/ I am building a "relative gutter", need to mark certain places in the document, and these should map to the JScrollbar's track, so one can easily find the right location in the document. Perhaps, there is another solution the my problem. // Robert > I am building a "relative gutter", need to mark certain > places in the document, and these should map to the JScrollbar's track, > so one can easily find the right location in the document. https://flamingo.dev.java.net/docs/file-viewer.html 's RelativeGutterPanel is maybe what you want. There the markers are not aligned with the scroll bar, but with the text panel as such. And the markers are clickable, so one doesn't have to rely on a 1:1 match with the scroll bar position. /Thomas SignatureThe comp.lang.java.gui FAQ: ftp://ftp.cs.uu.nl/pub/NEWS.ANSWERS/computer-lang/java/gui/faq http://www.uni-giessen.de/faq/archiv/computer-lang.java.gui.faq/ Thanks for the pointer I'll give it a try. // Robert Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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