Summary:
EFL currently supports pointer grabbing. This patch introduces new API
allowing to grab all slave touch devices registered in X server
Grabbing is performed by XIGrabDevice function from XInput 2.0.
By default ecore_x_input_touch_devices_grab grabs all XISlavePointer devices,
having XITouchInfoClass. Function returns EINA_TRUE if at least one touch device
was successfully grabbed. ecore_x_input_touch_devices_ungrab ungrabs all
previously grabbed devices.
To process events correctly change has been done in x_input_handler to emulate
mouse pointer events. If XITouchEmulatingPointer flag is set on touch events and
device is grabbed framework will generate mouse events. This is required
due to X Server design in which mouse events are no longer send to client when device is
detached (grabbed) from virtual core pointer.
@feature
Reviewers: cedric, raster, devilhorns
Subscribers: seoz, cedric
Differential Revision: https://phab.enlightenment.org/D2568
Summary:
This patch set adds the necessary code to expose device axis state to applications. This was primarily written with graphics tablets in mind, which -- in addition to acting like a mouse -- also provide information about pen pressure, tilt, etc. Other devices could potentially benefit from this API as well: touchscreens, joysticks, knob controllers, "spaceballs", etc.
Whenever an update to the device state is recieved, an "Axis update" event is synthesized. This event contains the updated information, typically scaled and normalized to a particular logical range (e.g. zero to one for pressure, -pi to pi radians for angles, etc.). Information about the tool which generated the event is also stored so that applications can disambiguate events from multiple devices (or in the case of multitouch screens, individual fingers).
This API is only wired up for use with X11 at the moment. Support for other backends (e.g. Wayland) should be easy to add for those familiar them.
**Note**: The following is a list of changes from the "v2" patches originally sent to the mailinglist
//Define and implement new Ecore_Event_Axis_Update events//
* Harcode axis labels instead of including xserver-properties.h
* Use C89-style comments
* Use doxygen comments
* Update comment text to note axes with unbounded/undefined ranges/units
* Create "Ecore_Axis" and "Ecore_Axis_Label" typedefs
* Reference typedef'd instead of raw types
* Adjust how we count through valuators to support tilt/az
* Add support for tilt and azimuth
* Tweak memory management in case number of valuators differ
* Expand TWIST axis normalization to declared range
* Only normalize TWIST axis if resolution == 1 (wacom bug)
* Cache label atoms on first use to minimize round-trips
//Implement EVAS_CALLBACK_AXIS_UPDATE event and friends//
* Update to doxygen comments
* Update comment text to note axes with unbounded/undefined ranges/units
* Typedef 'Evas_Axis_Label', 'Evas_Axis'
* Move typedef for 'Evas_Event_Axis_Update'
* Reference typedef'd instead of raw types
//Wire the Ecore and Evas implementations of axis update events together//
* Expose ecore_event_evas_axis_update in Ecore_Input_Evas.h
* Move ecore_event_evas_axis_update to more logical position
//DEBUG: Add axis update logging to evas-multi-touch.c//
* Removed from patch set
//Make evas-multi-touch demo use new axis functionality//
* Have pressure adjust rectangle brightness instead of size
* Use more available axis data when rendering rectangle (azimuth, tilt, twist)
Test Plan: The evas-multi-touch demo was updated to support axis update events. A graphics tablet was then used to verify that the pressure, azimuth, tilt, and twist data was coming through correctly.
Reviewers: cedric, raster
Subscribers: cedric
Differential Revision: https://phab.enlightenment.org/D1514
Conflicts:
src/lib/ecore_input/Ecore_Input.h
Carsten Haitzler -
** fixed forward enum typedefs (make things unhappy)
** fixed conflict above
** fixed wrong param type for _evas_canvas_event_feed_axis_update()
** fixed @sinces to be 1.13
** fixed formatting/indeting
** fixed order of operation reliance in if's with ()'s to be clear
** fixed functions to be static that should have been
Subject: [E-devel] Bug fix : ecore x XI2 handler not to make button
event twice
Dear developers,
I have fixed a bug in ecore x xi2 handler.
Currently, ecore mouse down/move/up event are made twice for a X touch
event.
Among a couple of events, the first one is made by a X touch event and
the other is made
by a button event whose flags has XIPointerEmulated flag.
The (latter) button event is made from the (former) X touch event
whose flags has XITouchEmulatingPointer flag.
Basically, X touch events doesn't have XITouchEmulatingPointer flag in
its flags when it doesn't make a
(XIPointerEmulated) button event.
Thus I correct ecore_x_xi2.c not to make a mouse down/move/up event
when a X touch event has
XITouchEmulatingPointer flag.
SVN revision: 82869
Lukasz Stanislawski
Carsten Haitzler
Jason Gerecke
Mike Blumenkrantz
Tom Hacohen
Jiyoun Park
Sung-Jin Park
Vincent Torri