Hi Peter,
You are a good mentor to me :)
Here is xdpyinfo -ext XInputExtension in my box shown as below:
XInputExtension version 2.3 opcode: 131, base event: 66, base error: 129
Extended devices :
"Virtual core pointer" [XPointer]
"Virtual core keyboard" [XKeyboard]
"Virtual core XTEST pointer" [XExtensionPointer]
"Virtual core XTEST keyboard" [XExtensionKeyboard]
"Power Button" [XExtensionKeyboard]
"Video Bus" [XExtensionKeyboard]
"Sleep Button" [XExtensionKeyboard]
"Logitech USB-PS/2 Optical Mouse" [XExtensionPointer]
"HID 06f3:0309" [XExtensionKeyboard]
"HID 06f3:0309" [XExtensionPointer]
"AT Translated Set 2 keyboard" [XExtensionKeyboard]
"SynPS/2 Synaptics TouchPad" [XExtensionPointer]
"HP WMI hotkeys" [XExtensionKeyboard]
And I read bout /usr/include/X11/extensions/XIproto.h to see Event
constants used by library :)
Emm... I have a doubt about that there are might some private
repostories for Ubuntu Phone based on Mir, replaced Wayland_ prefix to
Mir_ just kidding, sort of private source code base :P
Regards,
Leslie
On Wed, Jan 15, 2014 at 02:22:11PM +0800, Leslie Zhai wrote:
Hi synaptics developers,
In geis-2.2.16, libgeis/backend/grail/geis_grail_backend.c source
code file, about the 1143 line,
http://bazaar.launchpad.net/~oif-team/geis/trunk/view/head:/libgeis/backend/grail/geis_grail_backend.c#L1147
it would get error XEvent type, printf the XEvent type is 84.
My development enviorment shown as below:
3.12.7-2-ARCH i686
xf86-input-synaptics-1.7.3
geis-2.2.16
touchegg svn reversion 189
gnome-shell 3.10.2
I used touchegg, a qt4 gesture recognition application based on
geis, to debug gesture recognition, and my touchpad supports
multitouch, for example mtdev_has_mt_event(mtdev, ABS_MT_SLOT), when
I used 3 fingers to drag, geis got error XEvent type 84 in
_x11_fd_callback function.
84 is probably some XInput event, just take the base event you get from
xdpyinfo -ext XInputExtension, then subtract that from 84 and it'll tell you
what the matching XI_* event from XIproto.h is.
other than that I don't know much about geis, there was a multitouch-dev
list or so when geis came out, maybe someone on there knows though it's
pretty dead these days
(https://launchpad.net/~multi-touch-dev)
I argued that it might be xf86-input-synaptics-1.7.3`s issue,
because geis backend only received XEvent, then classified the
gesture, but synaptics post the multitouch event by
xf86PostTouchEvent, in xf86-input-synaptics=1.7.3 src/synaptics.c,
about the line 2710,
http://cgit.freedesktop.org/xorg/driver/xf86-input-synaptics/tree/src/synaptics.c?h=synaptics-1.7-branch#n2710
synaptics only sends touch events under very specific conditions and
configurations. unless you've enabled those configurations you may be
following the wrong lead.
And why ubuntu phone with multitouch touchscreen works well? It is
based on Mir, utouch-geis, sort of gesture recognition utils, is not
it? or it is android-based, different from Linux multitouch
protocol?
https://www.kernel.org/doc/Documentation/input/multi-touch-protocol.txt
I have no idea what the question is here, sorry.
Cheers,
Peter
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