Hello,
Can someone clarify where we stand in regard with this issue and Ubuntu Quantal
12.10?
I've been following Qt doc to the letter and got QPinchGesture working in a
QWidget... but as soon as the grabGesture is issued on that widget all other
widgets (tabs, pushbuttons, lineedits, etc.)
bootchk: see comment #7, if you use the qt sdk you won't get the ubuntu code
(it's not in upstream yet). You want
to test with the ubuntu-provided qt (fingerpaint demo is in the qt4-demos
package).
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I upgraded to 12.04, downloaded Qt SDK, built the fingerpaint demo,
futzed with xorg.conf.d to get it to load the synaptics Xorg input
driver instead of the wacom xorg input driver, futzed with xinput set-
prop, etc. to change the settings of the driver. No, the fingerpaint
demo doesn't work.
I
OK plain and raw events are sent when window belonging to xinput test-
xi2 has the cursor in it, or is in front ( or something like that.)
When the second finger is moved.
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Hi bootchk,
Do you have a touchscreen? If so, you want to be using the evdev driver
isntead of wacom. If not, then you'll want to use the synaptics driver
and open a different bug since this one is specific for touchscreens.
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Have you thought of using xscope? from
http://cgit.freedesktop.org/xorg/app/xscope
It would snoop on the net traffic between the X server (including the Xorg
driver say synaptics or evdev) and the X client (say Qt and app.)
Possibly the xscope tool is not up to date with XI2 protocol packets,
I finally got around to following through the config hackery described at
http://www.murraytwins.com/blog/?p=103
(the trick was to remove the existing wacom .conf, i think i earlier just chmod
000'd it but Xorg was running as
root so read it anyway). And it worked, kind of. I got fingerpaint
Marking as confirmed since Brent Fox reproduced this already couple of
months ago.
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https://bugs.launchpad.net/bugs/901630
Title:
multitouch + qt doesn't work (eg fingerpaint demo)
I now upgraded the laptop to 12.04 and the fingerpaint demo stopped working
even with Xorg.0.log showing
it's using evdev.
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Title:
multitouch +
Erno,
You're might be right that there still is a problem somewhere. Unless
Unity as window manager X client is grabbing the Xorg.input touch
device, and if Qt is built to find the device and become another
X-windows client of the Xorg input device, there is no reason it
shouldn't get touch
Chase wrote You have to put five or more fingers down on a trackpad to
start sending events that aren't caught by Unity or X synaptics.
My understanding now: Unity is a window manager (more or less.) It is
also in the so-called stack that processes touch events. It does
gesture recognition and
On 04/25/2012 08:03 AM, bootchk wrote:
Chase wrote You have to put five or more fingers down on a trackpad to
start sending events that aren't caught by Unity or X synaptics.
My understanding now: Unity is a window manager (more or less.) It is
also in the so-called stack that processes
With the N-trig touchscreen (#724831) the Qt fingerpaint demo works with fine
1-5 fingers. So the wacom
touchscreen support should be fixed to handle that as well.
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Hi bootchk,
Multitouch is supported in Qt in Ubuntu. We added support for it in
Ubuntu 11.04 and have maintained it since then. We haven't had a chance
to merge it upstream yet.
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Chase,
Thanks. How I interpret your last comment is: it is in Ubuntu but not
upstream to Qt (whoever that is now, Nokia or other.) As long as I use
Ubuntu's version of Qt (whether the source or libraries) it should work.
Also, referring to: https://wiki.ubuntu.com/Multitouch , specifically
On 04/24/2012 04:35 PM, bootchk wrote:
Thanks. How I interpret your last comment is: it is in Ubuntu but not
upstream to Qt (whoever that is now, Nokia or other.) As long as I use
Ubuntu's version of Qt (whether the source or libraries) it should work.
Correct.
Also, referring to:
I got Qt multitouch working on another laptop after a driver fix (see
#724831), so Qt isn't the problem.
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Title:
multitouch + qt doesn't work (eg
I had a similar issue and yes:
sudo apt-get remove xserver-xorg-input-wacom
changes the behaviour. Previously, SettingsInput DevicesTrackpad
showed no devices. Now, it shows my Wacom CTT-460. Also, mtdev-test
still fails as above but geisttest seems to show the device working with
pinches.
According to some sources, multitouch doesn't work on Ubuntu desktop until
version Qt5.
Only on Windows desktop or some mobile platforms.
http://qt-project.org/forums/viewthread/12664
Just to be clear, Chase above is correct, uTouch should work, but its not
necessarily part of Qt?
uTouch is
If it's a serial touchscreen, try these instructions from Brian Murray:
http://www.murraytwins.com/blog/?p=103
If it's a usb touchscreen, try uninstalling xserver-xorg-input-wacom.
Hopefully after the above your touchscreen will be using the X evdev
input module. It has support for multitouch,
I have a 2740p, which I believe is just a smaller screen version of the
model referenced in this bug report.
I'm using 11.10. When I try to do a two-finger pinch or rotate, the
system no longer recognizes any right-mouse clicks on the trackpad
device.
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