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Paint over any control without interrupting dnd [message #765063] Tue, 13 December 2011 05:48 Go to next message
Thomas Singer is currently offline Thomas Singer
Messages: 75
Registered: July 2009
Member
I want to provide a drag-and-drop feedback by drawing rectangular shapes on top of my components. I've tried it by showing a stippled Tracker from inside the DropTargetListener.dragOver, but it does not work, because the Tracker "hides" my controls regarding drop events. A plain PaintListener also does not work, because child controls will be painted over it. What else can I use to paint over my controls, similar to JFrame's glassPane?

Thanks in advance,
Tom

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Re: Paint over any control without interrupting dnd [message #766436 is a reply to message #765063] Thu, 15 December 2011 14:33 Go to previous messageGo to next message
Thomas Singer is currently offline Thomas Singer
Messages: 75
Registered: July 2009
Member
Is it possible to show a transparent Shell in front of my normal Shell and paint on the first one?

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Re: Paint over any control without interrupting dnd [message #766522 is a reply to message #766436] Thu, 15 December 2011 18:27 Go to previous messageGo to next message
Brian de Alwis is currently offline Brian de Alwis
Messages: 242
Registered: July 2009
Senior Member
You might want to check the 4.2 DnDAddon -- it sounds like it does something similar. See

http://git.eclipse.org/c/platform/eclipse.platform.ui.git/tree/bundles/org.eclipse.e4.ui.workbench.addons.swt/src/org/eclipse/e4/ui/workbench/addons/dndaddon/

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Re: Paint over any control without interrupting dnd [message #766664 is a reply to message #766522] Fri, 16 December 2011 03:20 Go to previous message
Thomas Singer is currently offline Thomas Singer
Messages: 75
Registered: July 2009
Member
Brian de Alwis wrote on Thu, 15 December 2011 18:27
You might want to check the 4.2 DnDAddon -- it sounds like it does something similar. See

http://git.eclipse.org/c/platform/eclipse.platform.ui.git/tree/bundles/org.eclipse.e4.ui.workbench.addons.swt/src/org/eclipse/e4/ui/workbench/addons/dndaddon/


Thanks, Brian, this looks similar to what I'm currently doing (though I try to make it more lightweight).

Tom

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