Added the concept of a "trusted" event to distinguish between events from
attached input devices or trusted injectors vs. other applications.
This change enables us to move certain policy decisions out of the
dispatcher and into the policy itself where they can be handled more
systematically.
Cherry pick of b931a1b4 from gingerbread into master.
Change-Id: I700a5f07b8b227878cea9437a289a45a245c0424
Merge commit '41aabeb51305d19747687f246080f44fc2a74435'
* commit '41aabeb51305d19747687f246080f44fc2a74435':
Added more robust tracking and cancelation of events.
Merge commit '748b413e94c73b760c63a03126df2c4712a1ae05'
* commit '748b413e94c73b760c63a03126df2c4712a1ae05':
GPS: Do not call sGpsInterface->init() multiple times
This change fixes several issues where events would be dropped in the
input dispatch pipeline in such a way that the dispatcher could not
accurately track the state of the input device.
Given more robust tracking, we can now also provide robust cancelation
of input events in cases where an application might otherwise become
out of sync with the event stream due to ANR, app switch, policy decisions,
or forced focus transitions.
Pruned some of the input dispatcher log output.
Moved the responsibility for calling intercept*BeforeQueueing into
the input dispatcher instead of the input reader and added support for
early interception of injected events for events coming from trusted
sources. This enables behaviors like injection of media keys while
the screen is off, haptic feedback of injected virtual keys, so injected
events become more "first class" in a way.
Change-Id: Iec6ff1dd21e5f3c7feb80ea4feb5382bd090dbd9
Adding changes to be able to have access to missing data to SUPL
(celld, imsi, WAP_PUSH and SMS)
Change-Id: I0207f7f7ea6595ed3fd7021cb732feddf52e4cf9
Signed-off-by: Mike Lockwood <lockwood@android.com>
Merge commit 'e11b76d3efb056edea301d53a354d0730adf3520'
* commit 'e11b76d3efb056edea301d53a354d0730adf3520':
Minor logging changes to input dispatcher to help with debugging.
Added dumpsys reporting to EventHub.
Made the formatting a bit clearer.
Added 'Locked' suffix to some internal methods of EventHub.
Change-Id: Ic449560bcce378f6361895d27c66854e9724abb0
Merge commit '57fa3e8b4c94125ddb5be015dd7fbde4a458894f'
* commit '57fa3e8b4c94125ddb5be015dd7fbde4a458894f':
Support haptic feedback for virtual keys defined in key layout.
A View initiates a drag-and-drop operation (hereafter just called a "drag")
by calling its startDrag(ClipData) method. Within the processing of that
call, two callbacks are made into the originating View. The first is to
onMeasureDragThumbnail(). Similarly to the core onMeasure() method, this
callback must respond by calling setDragThumbnailDimension(width, height) to
declare the size of the drag thumbnail image that should be used. Following
this, the View's onDrawDragThumbnail(canvas) method will be invoked to
actually produce the bits of the thumbnail image.
If all goes well, startDrag() will return 'true', and the drag is off and
running. (The other arguments to startDrag() provide reconciliation between
the current finger position and where the thumbnail should be placed on
the screen relative to it.)
Potential receipients of the ClipData behind the drag are notified by a
new dispatch mechanism, roughly parallel to motion event dispatch. The core
routine is the View's onDragEvent(event) callback, with the mechanics of
dispatch itself being routed through dispatchDragEvent(event) -- as in
the case of motion events, the dispatch logic is in ViewGroup, with leaf
View objects not needing to consider the dispatch flow.
Several different event 'actions' are delivered through this dispatch
mechanism:
ACTION_DRAG_STARTED: this event is propagated to every View in every window
(including windows created during the course of a drag). It serves as a
global notification that a drag has started with a payload whose matching
ClipDescription is supplied with the event. A View that is prepared to
consume the data described in this event should return 'true' from their
onDragEvent() method, and ideally will also make some visible on-screen
indication that they are a potential target of the drop.
ACTION_DRAG_ENTERED: this event is sent once when the drag point
enters the View's bounds. It is an opportunity for the View to set up
feedback that they are the one who will see the drop if the finger goes
up now.
ACTION_DRAG_LOCATION: when the drag point is over a given View, that
View will receive a stream of DRAG_LOCATION events, providing an
opportunity for the View to show visual feedback tied to the drag point.
ACTION_DRAG_EXITED: like DRAG_ENTERED, but called when the drag point
leaves the View's bounds. The View should undo any visuals meant to
emphasize their being the hovered-over target.
ACTION_DROP: when the drag ends at a given point, the View under that
point is sent this event, with the full ClipData of the payload.
ACTION_DRAG_ENDED: paralleling the DRAG_STARTED action, this is the global
broadcast that the drag has ended and all Views should return to their
normal visual state. This happens after the DROP event.
Change-Id: Ia8d0fb1516bce8c735d87ffd101af0976d7e84b6
This feature is currently used to enable dragging the start and end
selection handles of a TextView at the same time. Could be used for
other things later.
Deleted some dead code in ArrowKeyMovementMethod and CursorControllers.
Change-Id: I930accd97ca1ca1917aab8a807db2c950fc7b409
Merge commit '7642c82c291051919aad87c797e2dc1d77ed55e1'
* commit '7642c82c291051919aad87c797e2dc1d77ed55e1':
Make input dispatcher only ANR for foreground windows.
Redesigned the input dispatcher's ANR timeout mechanism so it is much
closer to Froyo's policy. ANR is only ever signalled if the dispatcher
is waiting on a window to finish processing its previous event(s) and
there is new pending input.
In the old code, we tracked the dispatch timeout separately for each
input channel. This was somewhat complicated and also resulted in the
situation where applications could ANR long after the user had pushed
them into the background.
Change-Id: I666ecada0952d4b95f1d67b9f733842b745c7f4b
This change is essentially a rewrite of the main input dispatcher loop
with the target identification folded in. Since the input dispatcher now
has all of the window state, it can make better decisions about
when to ANR.
Added a .5 second deadline for processing app switch keys. This behavior
predates Gingerbread but had not previously been ported.
Fixed some timing inaccuracies in the ANR accounting that could cause
applications to ANR sooner than they should have.
Added a mechanism for tracking key and motion events that have been
dispatched to a window so that appropriate cancelation events can be
synthesized when recovering from ANR. This change helps to keep
applications in sync so they don't end up with stuck buttons upon
recovery from ANRs.
Added more comments to describe the tricky parts of PollLoop.
Change-Id: I13dffca27acb436fc383980db536abc4d8b9e6f1
Added the MotionEvent.FLAG_WINDOW_IS_OBSCURED flag which is set by the
input manager whenever another visible window is partly or wholly obscured
the target of a touch event so that applications can filter touches
accordingly.
Added a "filterTouchesWhenObscured" attribute to View which can be used to
enable filtering of touches when the view's window is obscured.
Change-Id: I936d9c85013fd2d77fb296a600528d30a29027d2
Finished the input device capability API.
Added a mechanism for calibrating touch devices to obtain more
accurate information about the touch contact area.
Improved pointer location to show new coordinates and capabilities.
Optimized pointer location display and formatting to avoid allocating large
numbers of temporary objects. The GC churn was causing the application to
stutter very badly when more than a couple of fingers were down).
Added more diagnostics.
Change-Id: Ie25380278ed6f16c5b04cd9df848015850383498
Previously, the input dispatcher assumed that the input channel's
receive pipe file descriptor was a sufficiently unique identifier for
looking up input channels in its various tables. However, it can happen
that an input channel is disposed and then a new input channel is
immediately created that reuses the same file descriptor. Ordinarily
this is not a problem, however there is a small opportunity for a race
to arise in InputQueue.
When InputQueue receives an input event from the dispatcher, it
generates a finishedToken that encodes the channel's receive pipe fd,
and a sequence number. The finishedToken is used by the ViewRoot
as a handle for the event so that it can tell the InputQueue when
the event has finished being processed.
Here is the race:
1. InputQueue receives an input event, assigns a new finishedToken.
2. ViewRoot begins processing the input event.
3. During processing, ViewRoot unregisters the InputChannel.
4. A new InputChannel is created and is registered with the Input Queue.
This InputChannel happens to have the same receive pipe fd as
the one previously registered.
5. ViewRoot tells the InputQueue that it has finished processing the
input event, passing along the original finishedToken.
6. InputQueue throws an exception because the finishedToken's receive
pipe fd is registered but the sequence number is incorrect so it
assumes that the client has called finish spuriously.
The fix is to include a unique connection id within the finishedToken so
that the InputQueue can accurately confirm that the token belongs to
the currently registered InputChannel rather than to an old one that
happened to have the same receive pipe fd. When it notices this, it
ignores the spurious finish.
I've also made a couple of other small changes to avoid similar races
elsewhere.
This patch set also includes a fix to synthesize a finished signal
when the input channel is unregistered on the client side to
help keep the server and client in sync.
Bug: 2834068
Change-Id: I1de34a36249ab74c359c2c67a57e333543400f7b
Results in an approximately 60% reduction in InputDispatcher thread CPU time.
(Went from 3% to 1% when measured with CPU frequency scaling disabled.)
Change-Id: Ia6e6087a719ee518fe37b428a871c7240bd4143f
Merge commit 'f66f8a58cc4412bd258e1d5b11cac17a617bdc58'
* commit 'f66f8a58cc4412bd258e1d5b11cac17a617bdc58':
Add support for the PointerLocation overlay.
This change involves adding a new method to IWindowManager,
monitorInput() that returns an InputChannel to receive a copy of all
input that is dispatched to applications. The caller must have
the READ_INPUT_STATE permission to make this request (similar to
other window manager methods such as getKeycodeState).
Change-Id: Icd14d810174a5b2928671ef16de73af88302aea0
Added a new asynchronous injection mode and made the existing
synchronization mechanism more robust.
Change-Id: Ia4aa04fd9b75ea2461a844c5b7933c831c1027e6
Added a new asynchronous injection mode and made the existing
synchronization mechanism more robust.
Change-Id: I0464f70ff5cbd519dbb02686b2cb5d810fe7dbb2
* changes:
CameraBrowser: Launch itself when a camera is attached to USB.
Send Intents when PTP compatible devices are connected/disconnected to USB
Give system server permission to access USB.
Merge commit '9795a25da060f9a7df87da8ab43fb1086d4322a5'
* commit '9795a25da060f9a7df87da8ab43fb1086d4322a5':
Refactor input reader to support new device types more easily.
Refactored the input reader so that each raw input protocol is handled
by a separate subclass of the new InputMapper type. This way, behaviors
pertaining to keyboard, trackballs, touchscreens, switches and other
devices are clearly distinguished for improved maintainability.
Added partial support for describing capabilities of input devices
(incomplete and untested for now, will be fleshed out in later commits).
Simplified EventHub interface somewhat since InputReader is taking over
more of the work.
Cleaned up some of the interactions between InputManager and
WindowManagerService related to reading input state.
Fixed swiping finger from screen edge into display area.
Added logging of device information to 'dumpsys window'.
Change-Id: I17faffc33e3aec3a0f33f0b37e81a70609378612
Usb.ACTION_USB_CAMERA_ATTACHED and Usb.ACTION_USB_CAMERA_DETACHED are sent
when cameras are connected and disconnected.
The data field of the intent contains a Uri for the camera in the Mtp content provider.
Change-Id: I814221b4f0507b309997c71edb5a041e8efc54f7
Signed-off-by: Mike Lockwood <lockwood@android.com>
