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Java Forum / GUI / March 2006possible to create a borderless rounded JPanel / JDialog
Hi, I want to create a small popup information bubble (similar to the ones that pop up above the task bar in windows), but I cant seem to figure out how to do this, if someone could point me in the right direction, I would greatly appreciate it. I have succesfully created a rounded JPanel, but I cant make it visible (my guess is because it is not contained within a JDialog/JFrame), I have thought about using popups, but I am having a similar problem. > I want to create a small popup information bubble (similar to the ones > that pop up above the task bar in windows), A Tooltip? Then using a window is probably the wrong way to do it. Check the Tooltip class in case you are talking about a tooltip. > but I cant seem to figure > out how to do this, if someone could point me in the right direction, I > would greatly appreciate it. > > I have succesfully created a rounded JPanel, Which will not help you, and will not really work. > but I cant make it visible > (my guess is because it is not contained within a JDialog/JFrame), I > have thought about using popups, but I am having a similar problem. See Q3.5 of the FAQ. Java 1.6 will have some changes in the desktop integration department, but I didn't check if they add such features. /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/ Basically, a tooltip is what I want, however, I want to be able to round the edges, and add a little arrow on the side of it, but I havent been able to control the way the tooltip is displayed (i.e. its shape) > Basically, a tooltip is what I want, however, I want to be able to > round the edges, and add a little arrow on the side of it, but I havent > been able to control the way the tooltip is displayed (i.e. its shape) Looking inside Sun's code, a tooltip is a javax.swing.Popup, and it would appear to create a JWindow for its display. So perhaps you could work out how to round its corners. = Steve = SignatureSteve W. Jackson Montgomery, Alabama > Basically, a tooltip is what I want, however, I want to be able to > round the edges, and add a little arrow on the side of it, but I havent > been able to control the way the tooltip is displayed (i.e. its shape) You usually can't. As pointed out in the FAQ, typically the heavyweight top-level windows are non-transparent, rectangular windows. With the exception of what Apple does in their Java implementation. /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/ >> Basically, a tooltip is what I want, however, I want to be able to >> round the edges, and add a little arrow on the side of it, but I havent [quoted text clipped - 3 lines] > top-level windows are non-transparent, rectangular windows. With the > exception of what Apple does in their Java implementation. probably you can use JNIWrapper to make Java Window transparent (on M$ Windows). Andrey Signaturehttp://uio.imagero.com Unified I/O for Java http://reader.imagero.com Java image reader http://jgui.imagero.com Java GUI components and utilities >>> Basically, a tooltip is what I want, however, I want to be able to >>> round the edges, and add a little arrow on the side of it, but I havent [quoted text clipped - 6 lines] > probably you can use JNIWrapper to make Java Window transparent (on M$ > Windows). hmm, Linux and Mac seems to be supported too. Andrey Signaturehttp://uio.imagero.com Unified I/O for Java http://reader.imagero.com Java image reader http://jgui.imagero.com Java GUI components and utilities You could put that JPanel in a JFrame and then use the setUndecorated(true) function on the JFrame. As far as making it rounded, you could probably do some kind of hack where you could get the color of the desktop at the popup position (using something like java.awt.Robot getPixelColor()) and then make the JPanel rounded by creating a custom paintComponent() and then setting the background to whatever getPixelColor() returns, thus creating the illusion that it is rounded. This is certainly a hack though. > You could put that JPanel in a JFrame and then use the > setUndecorated(true) function on the JFrame. [quoted text clipped - 5 lines] > the background to whatever getPixelColor() returns, thus creating the > illusion that it is rounded. This is certainly a hack though. Another (well known?) hack for your problem: "Create translucent and shaped windows, while avoiding native code, with clever use of a screenshot." http://www.onjava.com/pub/a/onjava/excerpt/swinghks_hack41/index.html 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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