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AttachedSurfaceControl
public
interface
AttachedSurfaceControl
| android.view.AttachedSurfaceControl |
Provides an interface to the root-Surface of a View Hierarchy or Window. This
is used in combination with the SurfaceControl API to enable
attaching app created SurfaceControl to the SurfaceControl hierarchy used
by the app, and enable SurfaceTransactions to be performed in sync with the
View hierarchy drawing.
This object is obtained from View.getRootSurfaceControl() and
Window.getRootSurfaceControl(). It must be used from the UI thread of
the object it was obtained from.
Summary
Public methods | |
|---|---|
abstract
boolean
|
applyTransactionOnDraw(SurfaceControl.Transaction t)
Consume the passed in transaction, and request the View hierarchy to apply it atomically with the next draw. |
abstract
SurfaceControl.Transaction
|
buildReparentTransaction(SurfaceControl child)
Create a transaction which will reparent to the View hierarchy root SurfaceControl. |
Public methods
applyTransactionOnDraw
public abstract boolean applyTransactionOnDraw (SurfaceControl.Transaction t)
Consume the passed in transaction, and request the View hierarchy to apply it atomically
with the next draw. This transaction will be merged with the buffer transaction from the
ViewRoot and they will show up on-screen atomically synced.
This will not cause a draw to be scheduled, and if there are no other changes
to the View hierarchy you may need to call View.invalidate()
| Parameters | |
|---|---|
t |
SurfaceControl.Transaction: This value cannot be null. |
| Returns | |
|---|---|
boolean |
|
buildReparentTransaction
public abstract SurfaceControl.Transaction buildReparentTransaction (SurfaceControl child)
Create a transaction which will reparent to the View hierarchy
root SurfaceControl. See
SurfaceControl.Transaction#reparent. This transacton must be applied
or merged in to another transaction by the caller, otherwise it will have
no effect.
| Returns | |
|---|---|
SurfaceControl.Transaction |
A new transaction which performs the reparent operation when applied.
This value may be null. |