Android 5.0 cannot form multitouch events from multiple input
devices. So it is not possible to report one touchpoint from the
stylus position and, at the same time, another touchpoint from a
finger touch. Instead, when a new input device starts up the currently
active input is cancelled. This is highly undesirable while writing
with the pen.
The easiest solution is to ignore non-stylus touch events while the
stylus is within range (hovering) of the touchscreen. For example,
N-trig digitizers implement this in hardware. But wacom digitizers do
report pen data simultaneously with touch data. This patch disables
(non-stylus) touch input within 50ms of stylus data. On my Galaxy
Note this is necessary to make stylus input usable.
Original commit by vbraun:
b9cb296130
Change-Id: I97f26369826e96c97461c8ae188f1c64dec1b4d3
Introduce ACTION_BUTTON_PRESS and ACTION_BUTTON_RELEASE as actions to
signal a button press or release. If these actions happen
simulanteously with a DOWN or UP event then they're explicitly
ordered to happen after the DOWN or preceding the UP in order to send
them to the most recently targeted view.
Also, introduce new stylus button constants that differ from the
constants we use for mouse buttons.
Bug: 20704355
Change-Id: Ib960a5004db5429ad2fc8db020704773e2978327
Occasionally we'll receive the stylus up signal (pressure = 0) before
we receive the touch screen up signal. Rather than giving pointer a
pressure value of 0 (which is one of the signals of hovering) or
falling back to the touchscreen pressure values (which would make for
an inconsistent stream), use the previous pressure value which should
always be non-zero for a stream of fused data.
Bug: 20449776
Change-Id: I71eb97e7c4ea53e42b0eb54fc1f8ae7f89aad9d1
Even when there isn't movement on the touchscreen we should produce
events for pressure and button state changes generated by external
stylii.
Change-Id: I9fd7ba85902d5d6bfb28d5e5ff5d8f340a94c2bf
Temporarily increase the stylus timeout while we figure out where the
delay in BT information is coming from.
Change-Id: I27ab5a4db4ad14358c6e6803961612420371fce9
Sometimes stylus data will be delayed by 30 - 40ms. By increasing the
timeout we pretty much always pick up stylus data and the touch
latency feels surprisingly small.
Change-Id: I39f5b9037ce0444b1e957149d3f1c3a3137804cb
This prevents us from dropping any states (namely the pressure
transition from non-zero to zero) if we get the touch up before we
get the stylus data.
Change-Id: Ifc198628d35b7079dc5ec23d81f9681d122757a0
Tests always get built with the platform now anyways. Also, remove
the dependency on libandroidfw since it causes issues on PDK builds.
Change-Id: Ib73ec620abac3782d9fdae48778064c06b30aae0
When the touch firmware or driver sends a key event that is triggered
by a low-level gesture such as a palm slap. For this to work, the
touch device's .kl file must specify the "GESTURE" flag for each
key that is produced by a gesture.
Note that the "VIRTUAL" flag should also be specified for any such
keys for which we would like to generate haptic feedback.
eg. key 142 SLEEP VIRTUAL GESTURE
Bug: 19264992
Change-Id: Ief494ec7e3ca66d2358a1001fdfae4f263ee1cd1
This code doesn't need to run on the Mac, and the BoringSSL transition
will be easier without references to external/openssl.
Change-Id: I14ea11fa2911af0f4e95e69636e6a2c26126cbe0
Count items as they are added and removed rather than iterating over the
entire list to count them.
Increases performance slightly, particularly when tracing is turned on,
which causes count to be queried more often, and when the number of
items in the queues grow large. This can happen due to applications not
responding, for example.
Change-Id: I0f11f7edd46089612af910cdfabfeb3ee685d7d9
keyBitmask and ledBitmask are arrays, "!their address" always evaluates to
false. clang complains about this.
Change-Id: I6aed45a203b0eeaad2093dbdebea03a2c2fc1a3d
Signed-off-by: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org>
I'm pretty sure I had done this before... Must have been new
dependencies that slipped in when L merged in.
Bug: 15193147
Change-Id: Ib9b1b8a65665d25c33c6141b9476a8e13c4084e0
This code is no longer necessary and was preventing input from
reaching their desired windows. See bug 17648830.
Change-Id: Ib1c026ece70e6fa98343340b89af4199d6d0ffca
