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Java Forum / GUI / March 2007Transparent window
Hi, I'd like to have a transparent window (to do some processing on the image below the window layer, think of a magnifier glass). Do you have any suggestion about doing that? (A way of doing so would be to take a screenshot and blitting the region of interest, but the problem with this technique would be that, if the screen content updates, the transparent window will show the old content - or should I start a thread just for updating the screenshot at regular time intervals?) Thanks in advance MrAsm ... > I'd like to have a transparent window (to do some processing on the > image below the window layer, think of a magnifier glass). Is 'the image' loaded by Java into 'the window' programmed by you? If so, this might be done a lot simpler than using Robot to get screenshots. Andrew T. >... >> I'd like to have a transparent window (to do some processing on the [quoted text clipped - 5 lines] > >Andrew T. What is robot? What is 'the image loaded by Java'?? I would like to have a window. The user moves (drag) the window with the mouse, and the window acts like a magnifier glass (or other image filtering) for everything that is below the window itself: other windows, desktop image, etc. MrAsm > >... > >> I'd like to have a transparent window (to do some processing on the [quoted text clipped - 3 lines] > >programmed by you? If so, this might be done > >a lot simpler than using Robot to get screenshots. .. > What is robot? Not 'robot, 'Robot', as in the J2SE class java.awt.Robot. The Robot can take screenshots. > What is 'the image loaded by Java'?? ..have you considered hiring a Java programmer? Andrew T. >> What is 'the image loaded by Java'?? > >..have you considered hiring a Java programmer? No, because I'm a C++ programmer myself (and I can code in Java, too). Have you considered answering questions if you can/want, or better not posting at all? (My question was very specific.) >>> What is 'the image loaded by Java'?? >> [quoted text clipped - 6 lines] > >(My question was very specific.) I was just asking for a pointer to some Swing or AWT class or method or specific flag to manage some form of window transparency (or just confirmation for my original idea of screenshot). Of course, I was not asking to post Java source code :) > I would like to have a window. > The user moves (drag) the window with the mouse, and the window acts > like a magnifier glass (or other image filtering) for everything that > is below the window itself: other windows, desktop image, etc. May be off-topic, but.. A web search on 'java screen magnifier' produced http://scanline.ca/magnify/ Note that it is implemented with SWT, but may provide some ideas. > I'd like to have a transparent window (to do some processing on the > image below the window layer, think of a magnifier glass). See http://rabbit-hole.blogspot.com/2007/03/give-your-application-speech-bubble.html and prior entries for some non-rectangular window implementations (cross-platform and all java). Java doesn't have built-in support for either transparent or non- rectangular windows. 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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