The major goal of this rewrite is to make it easier to implement
power management policies correctly. According, the new
implementation primarily uses state-based rather than event-based
triggers for applying changes to the current power state.
For example, when an application requests that the proximity
sensor be used to manage the screen state (by way of a wake lock),
the power manager makes note of the fact that the set of
wake locks changed. Then it executes a common update function
that recalculates the entire state, first looking at wake locks,
then considering user activity, and eventually determining whether
the screen should be turned on or off. At this point it may
make a request to a component called the DisplayPowerController
to asynchronously update the display's powe state. Likewise,
DisplayPowerController makes note of the updated power request
and schedules its own update function to figure out what needs
to be changed.
The big benefit of this approach is that it's easy to mutate
multiple properties of the power state simultaneously then
apply their joint effects together all at once. Transitions
between states are detected and resolved by the update in
a consistent manner.
The new power manager service has is implemented as a set of
loosely coupled components. For the most part, information
only flows one way through these components (by issuing a
request to that component) although some components support
sending a message back to indicate when the work has been
completed. For example, the DisplayPowerController posts
a callback runnable asynchronously to tell the PowerManagerService
when the display is ready. An important feature of this
approach is that each component neatly encapsulates its
state and maintains its own invariants. Moreover, we do
not need to worry about deadlocks or awkward mutual exclusion
semantics because most of the requests are asynchronous.
The benefits of this design are especially apparent in
the implementation of the screen on / off and brightness
control animations which are able to take advantage of
framework features like properties, ObjectAnimator
and Choreographer.
The screen on / off animation is now the responsibility
of the power manager (instead of surface flinger). This change
makes it much easier to ensure that the animation is properly
coordinated with other power state changes and eliminates
the cause of race conditions in the older implementation.
The because of the userActivity() function has been changed
so that it never wakes the device from sleep. This change
removes ambiguity around forcing or disabling user activity
for various purposes. To wake the device, use wakeUp().
To put it to sleep, use goToSleep(). Simple.
The power manager service interface and API has been significantly
simplified and consolidated. Also fixed some inconsistencies
related to how the minimum and maximum screen brightness setting
was presented in brightness control widgets and enforced behind
the scenes.
At present the following features are implemented:
- Wake locks.
- User activity.
- Wake up / go to sleep.
- Power state broadcasts.
- Battery stats and event log notifications.
- Dreams.
- Proximity screen off.
- Animated screen on / off transitions.
- Auto-dimming.
- Auto-brightness control for the screen backlight with
different timeouts for ramping up versus ramping down.
- Auto-on when plugged or unplugged.
- Stay on when plugged.
- Device administration maximum user activity timeout.
- Application controlled brightness via window manager.
The following features are not yet implemented:
- Reduced user activity timeout for the key guard.
- Reduced user activity timeout for the phone application.
- Coordinating screen on barriers with the window manager.
- Preventing auto-rotation during power state changes.
- Auto-brightness adjustment setting (feature was disabled
in previous version of the power manager service pending
an improved UI design so leaving it out for now).
- Interpolated brightness control (a proposed new scheme
for more compactly specifying auto-brightness levels
in config.xml).
- Button / keyboard backlight control.
- Change window manager to associated WorkSource with
KEEP_SCREEN_ON_FLAG wake lock instead of talking
directly to the battery stats service.
- Optionally support animating screen brightness when
turning on/off instead of playing electron beam animation
(config_animateScreenLights).
Change-Id: I1d7a52e98f0449f76d70bf421f6a7f245957d1d7
Normally the ValueAnimator scale factor is applied the first
time a ViewRootImpl window session is created but that may
be too late for animators created by system services that
start early in the boot process. So set the scale factor
immediately whenever the setting changes.
Also make ValueAnimator.getDurationScale() accessible (but @hide)
for custom animators that want to apply the same scale to
their animations.
Change-Id: I0f5a750ab5b014f63848445435d8dca86f2a7ada
1.If a window is shown but never moved the window window
is never notified for its current location. Therefore,
accessibility nodes do not contain correct bounds in
screen coordinates.
bug:6926295
Change-Id: I7df18b095d33ecafffced75aba9e4f4693b0c393
Preloaded drawables now have a density associated with them, so we
can load the correct drawable if we are using a different density.
Window manager now formally keeps track of the density for each
screen, allowing it to be overridden like you can already do with
size, and relies on this density to drive itself internally and
the configurations it reports.
There are a new set of Bitmap constructors where you provide a
DisplayMetrics so they can be constructed with the correct density.
(This will be for when you can have different windows in the same
app running at different densities.)
ActivityThread now watches for density changes, and pushes them
to the DENSITY_DEVICE and Bitmap global density values for that
process.
A new am command allows you to change the density.
Fix a couple of bugs that turned up.
Remove touch/focus from display. Add iterators for access.
Respond to comments. Remove TODOs, and some deviceId parameters.
Change-Id: Idcdb4f1979aa7b14634d450fd0333d6eff26994d
This puts in most of the infrastructure needed to allow us to
switch between different densities at run time. The main remaining
uses of the global are to initialize the Bitmap object (not sure
what to do about that since it doesn't have anything passed in
the constructor to get this information from), and being able to
load drawables if we need a different density than what was preloaded
by zygote.
Change-Id: Ifdbfd6b7a5c59e6aa22e63b95b78d96af3d96848
The purpose of this change is to remove direct reliance on
SurfaceFlinger for describing the size and characteristics of
displays.
This patch also starts to make a distinction between logical displays
and physical display devices. Currently, the window manager owns
the concept of a logical display whereas the new display
manager owns the concept of a physical display device.
Change-Id: I7e0761f83f033be6c06fd1041280c21500bcabc0
1. The window manager was not notifying a window when the latter
has been moved. This was causing incorrect coordinates of the
nodes reported to accessibility services. To workaround that
we have carried the correct window location when making a
call from the accessibility layer into a window. Now the
window manager notifies the window when it is moved and the
workaround is no longer needed. This change takes it out.
2. The left and right in the attach info were not updated properly
after a report that the window has moved.
3. The accessibility manager service was calling directly methods
on the window manager service without going through the interface
of the latter. This leads to unnecessary coupling and in the
long rung increases system complexity and reduces maintability.
bug:6623031
Change-Id: Iacb734b1bf337a47fad02c827ece45bb2f53a79d
- Use local AppWindowAnimators in WindowAnimator rather than
using shared WindowManagerService objects.
- Use local WindowStateAnimators in AppWindowAnimator rather
than use AppToken's WindowState objects.
- Remove redundant WindowManagerService parameter passed to
AppWindowAnimator ctor.
- Keep from copying parameters from performLayout if the
parameters haven't changed since the last copy.
- Link WindowStateAnimator to AppWindowAnimator to keep
from going through WindowStateAnimator.mWin,
WindowState.mAppToken and AppWindowToken.mAppAnimator.
- Converted attached WindowState in WindowStateAnimator to
WindowStateAnimator to eliminate multiple conversions.
Change-Id: I5e35af88d8fdc1a7454984eaea91a1bc4f926978
Provide separate copies of mWallpaperTarget, mWallpaperTokens, and
mLower/UpperWallpaperTarget in the layout and animation sides of
Window Manager.
Simplify constructors of WindowAnimator and WindowStateAnimator.
Change-Id: I7e35794a432c25c4194c046e9e27150d1c905403
A recent optimization to only send updates to WindowManagerService
when there is something to report backfired. One bit indicating
change had negative polarity so the update should also have been
sent when this bit was cleared. This change alters the bit to
positive polarity.
Fixes bug 6780496.
Change-Id: I3336812a60534ebffc9e94b2fb1d0df4d6969bca
Wallpaper offset was passing through H Handler before being set.
It isn't part of animation and wasn't going through animation anyways.
This change goes back to original implementation of setting
wallpaper offset directly from call.
Change-Id: Ied88e2dc042af814b5ba91c7efb839bd82682567
The controls for the DimAnimator were going through the H Handler
to sync with the Animator. We are switching to using the
LayoutToAnimator object for passing data from layout to animator.
Change-Id: Ib6d0afabba781c88bcc1c525e3ae424cf19ac1ad
It will be better to have the object that moves layout parameters to
animation on the layout side, and the object that moves animation
parameters back to layout on the animation side. That way we can
do partial filling of these objects without calling across. We
may never do partial draining of these objects.
Change-Id: I88826fa97350f96e309beef386885f55a9a73305
The flag indicating that the Starting window is displayed was not
being cleared when the Starting window was removed. That caused the
goodToGo indication to falsely indicate that all windows were drawn
when in fact the destination activity had not yet been drawn. This
caused the animation to begin when it was still black behind the old
animation.
This fixes bug 6764727.
Change-Id: Iacef73b0335b9bde2cdc8d0b072034222cd728e8
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
When launching only core apps, the wallpaper service
is not started. Without this change the WM waits
up to 30 seconds for the wallpaper window to be created even
though it will never happen. This introduces a significant
delay before the boot animation is dismissed so the user can
enter a decryption password.
Bug: 6263070
Change-Id: Ia975127a0bf09cf99818f7cc4fd6c0264b740ec6
In the course of the window manager refactoring into a separate
layout state, we introduced a bad interaction between the two
sides of the world. This resulting in multiple hops needed between
the two sides after an application has said it is finished drawing
its window, until the window/app transition is actually started.
Especially since these hops require going through the anim side
which is vsynced (so will delay its operation until the next frame),
this could introduce a notable delay until the window is first shown.
Fix this by re-arranging the code to make one straight path from
when a window reports it is shown to us starting the app transition
that is waiting for it. This change also includes various improvements
to debugging code that was done while working on it.
Change-Id: I7883674052da1a58df89cd1d9b8d754843cdd3db
Set up the Choreographer call from the animator, not from the
layout side. Introduce new class for transferring information from
layout to animator.
Change-Id: I7da032990f4b5eaeefcf92185901d896f25db3d2
Three problems fixed:
1. When one Activity took over for another Activity not all of the
starting window state was being copied over. Now copying over more
parameters.
2. When the visibility of an Activity was being changed the dummy
animation was overwriting the existing animation. If that animation
was the starting window animating then it started over when the
dummy animation was assigned. Now the dummy animation no longer
replaces an existing starting window animation.
3. The test for whether to animate away the starting window only
looked to see if the Activity had already drawn a window but did
not include the starting window. This caused the starting window
to immediately be hidden when the Activity was removed if no
windows were drawn, thereby exposing the fading window behind.
Now the starting window is included in the hasAppShownWindows test
and is animated away if it is exposed.
Fixes bug 6691421.
Change-Id: I4d32a1546c201652574a44d9e7f2752f1f1eb5a6
This normally shouldn't noramlly happen, but it can in the case of
bug 6647334 (crash in LoadedApk.makeApplication) where the package
manager information becomes inconsistent, and it could also happen
if an app was uninstalled or started updating at just the right
time during a launch.
Bug: 6647334
Change-Id: Iba22efe1d646cdac46099b2135466309577dfa54
...or settings from lock screen
When a window is drawn, the code to determine whether it should now
be shown was calling WindowState.isReadyForDisplay(). Part of the
condition of this function is that it is not ready if a policy is
forcing the window to be hidden -- which is the case when the lock
screen is shown. As a result, we wouldn't show the window at that
point, so wouldn't tell the activity manager that the token's windows
are visibible, and wouldn't tell the lock screen to go away.
This adds a new variation WindowState.isReadyForDisplayIgnoringKeyguard(),
which is the same as the original method but ignores the policy visibility
for app windows. This allows windows to be go through the complete
path of handling when the window is finally drawn and telling the
activity manager about it, even if behind the lock screen. By making it
a separate function, we don't impact any other code that is calling the
old function and may be relying on its behavior.
Also cleaned up a little of the dumpsys output. Most important, the
new ANR section is now moved to the top, since we want
"adb shell dumpsys window" to still give a nice summary of what we
normally care about -- the window stack and important global state.
Change-Id: Ica3ea85ce46f3f5f5cd2cc30fbd9de13d3885a57
Was counting on moving the app to the top to clear the flag
indicating that the app was being sent to the bottom. Since this
did not always happen the sendingToBottom flag was occasionally
left set. In this case the focus was skipped for that app and
consequently input was never propagated to it.
This fix clears the sendingToBottom flag each time the app
animations are completed.
Fixes bug 6691421.
Change-Id: I6f851dc5bedca95182db8490d87c876a71ad5fde
