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Thomas Zander | 2 Mar 2007 15:09
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Tablet in KOffice2

Hello fellow KOffice hackers.

Boudewijn and myself have been talking about the ideal way to handle tablets 
in KOffice. Or, better said, how to handle the fact that a user can have more 
then just a mouse.

See http://wiki.koffice.org/index.php?title=Flake/Tools_And_Pointers for the 
gory details.

Most of the essential features are implemented in KOffice trunk now.

For the people that work with a tablet and want to try this, there are some 
issues in Qt that I want to make people aware of.
* Qt4.2.2 makes us switch back to mouse as soon as the tablet leaves the 
canvas.  This means that you can't access the tool-options :(
This is fixed in 4.3-rsync already. I made a workaround for qt-copy [1]

* Qt4.2.2 basically makes it impossible to drag a shape from the 
shape-selector using the tablet input device.  Technically you get 
tabletEvents instead of DnD events.
I see that this is largely fixed in 4.3-rsync. There is some uglyness left 
that I sent a test application and a long explanation to qt-bugs for. I 
really don't want to dig into X11 and events stuff myself :)

Other then those I found no problems and trunk basically works the way we 
discussed.

Many thanks fly to Axel Jäger for the Graphire4 he sent me a couple of days 
ago, which was, and is, very useful to actually see what I'm doing!
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Thomas Zander | 3 Mar 2007 20:25
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Re: Tablet in KOffice2

On Friday 02 March 2007 15:09, Thomas Zander wrote:
> For the people that work with a tablet and want to try this, there are some
> issues in Qt that I want to make people aware of.
> * Qt4.2.2 makes us switch back to mouse as soon as the tablet leaves the
> canvas.  This means that you can't access the tool-options :(
> This is fixed in 4.3-rsync already. I made a workaround for qt-copy [1]
[]
> 1) workaround for the first bug;

The patch I provided previously was incorrect, as the type can now be 
uninitialized and cause unexpected events to be fired.
Fixed version;
Index: src/gui/kernel/qapplication_x11.cpp
===================================================================
--- src/gui/kernel/qapplication_x11.cpp (revision 638087)
+++ src/gui/kernel/qapplication_x11.cpp (working copy)
 <at>  <at>  -3408,7 +3408,7  <at>  <at> 
     } else if (event->type == EnterNotify || event->type == LeaveNotify) {
         XEvent *xevent = (XEvent *)event;
         //unsigned int xstate = event->xcrossing.state;
-        type = QEvent::MouseMove;
+        type = QEvent::None;
         pos.rx() = xevent->xcrossing.x;
         pos.ry() = xevent->xcrossing.y;
         pos = d->mapFromWS(pos);

--

-- 
Thomas Zander

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Boudewijn Rempt
 | 
2 Mar 2007 15:18





Re: Tablet in KOffice2


On Friday 02 March 2007, Thomas Zander wrote:

> Other then those I found no problems and trunk basically works the way we
> discussed.
>
> Many thanks fly to Axel Jäger for the Graphire4 he sent me a couple of days
> ago, which was, and is, very useful to actually see what I'm doing!

Yay!

--

-- 
Boudewijn Rempt 
http://www.valdyas.org/fading/index.cgi



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