Advice about how to implement the grab button functionality from the xorg dev list.
----- Forwarded message from Peter Hutterer <[EMAIL PROTECTED]> ----- Date: Tue, 1 Jul 2008 15:52:09 +0930 From: Peter Hutterer <[EMAIL PROTECTED]> To: Erik Garrison <[EMAIL PROTECTED]> Cc: [EMAIL PROTECTED] Subject: Re: the OLPC XO grab button (triggering mouse scrolling using a keypress) On Mon, Jun 30, 2008 at 07:35:16PM -0400, Erik Garrison wrote: > The keyboard has two buttons which are marked with a hand. The > interested may see a schematic at > http://wiki.laptop.org/go/OLPC_Keyboard_layouts. It was intended at > design time that pressing either of these buttons (Super_L and Super_R) > and simultaneously moving the mouse would trigger x and y scrolling in > X11 applications. > > I'm curious if anyone knows of ways in which similar functionality has > been implemented elsewhere. In general I'd like some advice about the > best place to implement this feature. Just put a passive grab on the keys to receive the key press event and then, depending on what you mean by scrolling: - mouse wheel emulation put a (sync) grab on the mouse and use XTestFakeButtonEvent on buttons 4/5/6/7 for to scroll. you'll need to mess around a bit with XAllowEvents, but it should work. - viewport scrolling XWarpPointer seems the only way, I don't see any other callers for xf86SetViewport that could be used directly. Cheers, Peter ----- End forwarded message ----- _______________________________________________ Sugar mailing list Sugar@lists.laptop.org http://lists.laptop.org/listinfo/sugar