1. If the application does not accommodate different screen density the
system applies an application scale equal to the device density over
the a default density. The AccessibilityNodeInfo coordinates were not
reported after applying the compatibility scale, therefore the bounds
in parent and screen were not as perceived by the user.
bug:6764586
Change-Id: Id9de3de885210d0725d1f3fde38e769b0cfd12a7
An optimization prunes invalidates on views which are not inside their
parent's bounds. This works in most cases, but it is possible to run
a situation where a view has been invalidated (and is thus waiting to
be redrawn), but the pruning logic ensures that that draw call
will not happen. Further, when/if the view comes into the bounds
of its parent again, it may still not be redrawn, because now future
invalidates on the view are noop'd because it is already in an invalidated
state (and thus will not propagate invalidates up the hierarchy).
The fix is to remove the optitmization. This will cause some overhead
sending the invalidation request up to the view root, but this
overhead is minimal (and only extra for cases of out-of-bounds views),
and the more expensive part of rendering these views will still not be done
since the view root will avoid re-drawing the hierarchy when the dirty
rectangle is empty.
Issue #6773607 Layered views animating from offscreen sometimes remain invisible
Change-Id: Ia2c1a2b9d3e7f267253cb325ccceff1e7fdbe8bd
1. If the application does not accommodate different screen density the
system applies an application scale equal to the device density over
the a default density. The AccessibilityNodeInfo coordinates were not
reported after applying the compatibility scale, therefore the bounds
in parent and screen were not as perceived by the user.
bug:6764586
Change-Id: Iae2d6ea81049364194c7cb09df2240b5eda3d939
1. The purpose of the View#announceForAccessibility method is to
give a message to the user that is not related to a predefined
view state change. The current implementation is grabbing the
source view's content description which in general overrides
the event text which defeats the purpose of the announcement.
bug:6721440
Change-Id: I8814914bea38c5f4c04f57391a64cf2bb06cb975
1. In JellyBean we have added some APIs to search for next accessibility
focus in various directions and set accessibility focus from hover.
However, we have decided that there is not clean answer for how this
should behave and the APIs were hidden. Now the accessibility service
is responsible for that. The unused code is now taken out.
2. This patch also takes out the hidden attribute accessibiligyFocusable
since we moved the responsibility for implementing focus search strategy
to accessibility services and we did not need that for Jellybean which
is a good sign that this is not needed. I general this is one less thing
for an app developer to worry about. We can add this if needed later.
bug:6773816
Change-Id: I0c858d72c93a2b7ff1f8f35a08d33ec4b9eb85fd
Add a one way method to notify Views that the window has moved
on the screen. Fixes issues arising from the IME popping up and
translating the window that uses it. Accessibility was left unaware
of these movements and was drawing the box around the wrong widgets.
Similarly PopupWindow used getLocationOnScreen to determine how
much screen real estate was above and below the anchor point to
determine where to put an anchored window.
Fixes bug 6623031.
Change-Id: I4731a94d5424c1ec77bf1729fba8fc9ea34cae46
allow to resolve it even more lazily: if resolution is asked then do it
only if possible (the View needs to have a parent that can also do its
resolution)
Change-Id: I8e808f0ef392521e59b27b82f86e9058f20af9ba
- see bug #5429822 UI should be mirrored for RTL locales (Arabic, Hebrew, farsi)
- also use isLayoutRtl() for being more concise
Change-Id: Ibf861333effdc646398fcd9354d96f2156550607
The new display list properties introduces in JB were causing numerous
and expensive memory allocations while scrolling lists. During a scroll
ListView sometimes attempts to apply an offset to views before they are
drawn for the first time. This had the side effect of generating a new
IllegalStateException and its entire stack trace. The exception was
caught inside the display list and never seen by users.
Generating an exception is very expensive both in terms of allocated
memory and CPU time spent crawling the stack.
List scrolls/flings are a common case of this issue but it also happens
during various types of animations. A simple alpha animation, for instance,
can cause the problem to occur.
Another side effect of this issue is more frequent and longer GC pauses.
Change-Id: Ic1b37cc84f7c8f290209cfb990d030e96d6e0dc7
This change shows how much time is spent updating and executing
framework display lists within a frame.
This change also fixes a crash that happnes if you attempt to
perform a dumpsys gfxinfo while the app is drawing (we are telling
developers to use this new tool.)
Change-Id: Ia4047a78a42b545ab77176ef4f371c300686548c
A recent change to LayoutTransition noop'd animations in non-visible
parents, to avoid artifacts like scaling/moving from (0,0,0,0). But there
was logic in ViewGroup that didn't account for transitions that didn't actually
run an animation, causing a disconnect between the state of a parent (getting ready
to remove an item later) and the state of the transition (not running, therefore
not needing the child to be removed later).
The fix was to detect when the transition did not start and avoid adding the
view to the list of children to be removed later.
Issue #6602502 Playing video through crackle application only audio is heard no video is displayed
Change-Id: Id5260580ab0d6dd165c62006c7bd579fd821a5f5
Extend RemoteControlClient class to enable an applicaton to
specify more information about how it's playing media, now covering
usecases where media playback happens "remotely". This playback
information can be used to set the volume and maximum volume
used remotely.
Declare a new intent and associated extras in Intent,
ACTION_VOLUME_UPDATE, so an application can be notified that
the volume it handles should be updated. It can then use
the new RemoteControlClient.setPlaybackInformation() method
to notify AudioService what the volume is.
Extend AudioService to maintain playback information associated
with the RemoteControlClient information in the stack of
media button event receivers (mRCStack). The information
about the active remote is cached so the stack doesn't have
to be iterated over in order to retrieve remote playback info.
Events to "adjust" the remote volume based on hardware key
presses cause the client application to be notified of
volume updates, and the volume panel to display the volume
set by the app.
Revise which stream type is controlled when none is specified
according to latest guidelines for remote playback.
Update VolumePanel class to support a new pseudo stream type,
AudioService.STREAM_REMOTE_MUSIC, that corresponds to the
remote playback volume, and uses the new "media route" icon.
Enable it to receive asynchronously new volume values for
the remote that will be displayed if the UI is still up,
and ignored otherwise.
Now supports hiding/showing sliders dynamically so remote
volume only appears when AudioService has a remote control
client handling remote volume.
Define new java symbols for the two media route icons.
Modify lockscreen behavior: don't automatically control music
volume when music is active, consider also remote playback.
Still to do:
- playback information set by RemoteControlClient should post
a message for AudioService to update playback information
instead of updating it synchronously
Change-Id: I557aa687239f9acfe33a609f05876c67fa7eb967
Currently just grabbing the window state but we could grab
other things as part of the last ANR report.
Bug: 6680398
Change-Id: I23aa70907b1bdcb21c8acc556fde196ca790ef6a
1. The function for finding where the accessibility focus in a virtual
node tree presented by an AccessibilityNodeProvider is not needed
API since the framework already keeps track of the accessibility
focused virtual node in order to draw the focus rectangle. This API
adds unnecessary complexity to developers of AccessibilityNodeProviders.
bug:6675330
Change-Id: I84774686b06a995073a39e45b8ef22f2cd04b773
Improve the API around ActionProvider visibility overriding. Allow the
application to notify whatever is hosting the ActionProvider that
visibility has changed in a way that is friendly to alternate support
library-style reimplementations of MenuItem.
Allow MediaRouter.Callback implementations to add or remove themselves
or other Callbacks during dispatch of callback events.
Make MediaRouteActionProvider track the visibility of corresponding
menu items more accurately.
Change-Id: Ic7ddb6a87c3637904750d2661e4a9fa323b09ea0
* Add ActionProvider#overridesItemVisibility and isVisible.
These methods allow an ActionProvider to override the
visibility of a MenuItem that it is bound to. If a MenuItem
has been explicitly hidden by the application, it will not
be visible.
* Change MediaRouteActionProvider to not require a MediaRouter
callback, to avoid extra lifecycle management headaches.
Change-Id: I606fa98b3a6a3e60a953dd024274f9bf9c67acdd
1. Currently we are providing accessibility focus search algorithm in the
framework and we are also setting accessibility focus from hover. It
appears that implementing a focus search strategy that works for all
accessibility services is non trivial task if feasible. Based on
feedback from the developers of two such services at Google - TalkBack
and BarilleBack - the built in focus search does not quite match what
they need and they would like to implement a custom strategy.
Hence, having APIs for accessibility focus search in the framework does
not make. Therefore, we are hiding this APIs and later will take out the focus
search logic and allow the accessibility service to implement search.
Also putting accessibility focus from hover is tightly integrated with
the focus search since the set of views that get accessibility focus
from hover should be the same as the set of views returned by the
focus search routine. Therefore, we are letting the accessibility service
decide where to put accessibility focus when it gets an accessibility
hover event.
bug:6675330
Change-Id: Ie152230990a6602f3fd1d82de2177d0b1444d654
This reverts commit 858491ba13
It turns out that Surface Flinger is supposed to generate fake vsyncs while the screen is off, but sometimes it wasn't working due to a bug. That bug has now been fixed by the following change: I7c6abc23bb021d1dfc94f101bd3ce18e3a81a73e
When the screen is off, we might not receive real vsync pulses from
the hardware which would cause posted Choreographer callbacks to not run.
This is bad because messages in the Looper might be blocked behind a barrier
that is scheduled to be removed by one of those Choreographer callback
(see ViewRootImpl.doTraversals). Until the barrier is removed, those messages
will not run. To prevent starvation of the Looper, we synthesize fake vsync
pulses at a reduced rate whenever the display hardware stops generating them.
This change should fix a variety of rare non-deterministic bugs where
the system might appear to be unresponsive while the screen is off,
and spurious ANRs reported shortly after the screen is turned back on.
Bug: 6574842
Bug: 6636995
Bug: 6643559
Change-Id: I263f2fdf979afd79e5ac47a0cc5d34a93b860c21
