Change Transition
This adds a new transition classification for apps which are
switching between 2 visible states. The primary example of this
is windowing-mode change.
This new classification is mChangingApps in DisplayContent and
there is a transition type for TASK_CHANGE_WINDOWING_MODE.
The mode-change transition is scheduled when AppWindowToken
detects a windowing-mode change. It immediately creates
a snapshot and temporary leash to "freeze" the visuals of
the app until the animation starts (all transitioning apps
are ready).
The transition itself is a blend of fading, scaling, and
cropping based on whether the end-state is bigger than the
start state.
The RemoteAnimationTarget now includes a startBounds and an
extra "snapshot" leash for controlling the snapshot overlay
relative to the AppWindowToken. If either of those is
populated, the client of the RemoteAnimation can assume it
is animating a change and is responsible for transforming
the leash from the startBounds to its final state.
Bug: 113253723
Bug: 111762928
Test: go/wm-smoke + RemoteAnimationControllerTests
Change-Id: I8654656124b888950e55e31d88ce7a4101e935f8
diff --git a/services/core/java/com/android/server/wm/AppWindowToken.java b/services/core/java/com/android/server/wm/AppWindowToken.java
index 750c5ca..65b36a0 100644
--- a/services/core/java/com/android/server/wm/AppWindowToken.java
+++ b/services/core/java/com/android/server/wm/AppWindowToken.java
@@ -16,6 +16,7 @@
package com.android.server.wm;
+import static android.app.WindowConfiguration.WINDOWING_MODE_FREEFORM;
import static android.app.WindowConfiguration.WINDOWING_MODE_PINNED;
import static android.app.WindowConfiguration.WINDOWING_MODE_SPLIT_SCREEN_PRIMARY;
import static android.app.WindowConfiguration.WINDOWING_MODE_UNDEFINED;
@@ -33,6 +34,7 @@
import static android.view.WindowManager.LayoutParams.TYPE_APPLICATION_STARTING;
import static android.view.WindowManager.LayoutParams.TYPE_BASE_APPLICATION;
import static android.view.WindowManager.TRANSIT_DOCK_TASK_FROM_RECENTS;
+import static android.view.WindowManager.TRANSIT_TASK_CHANGE_WINDOWING_MODE;
import static android.view.WindowManager.TRANSIT_UNSET;
import static android.view.WindowManager.TRANSIT_WALLPAPER_OPEN;
@@ -97,6 +99,7 @@
import android.os.RemoteException;
import android.os.SystemClock;
import android.os.Trace;
+import android.util.ArraySet;
import android.util.Slog;
import android.util.proto.ProtoOutputStream;
import android.view.DisplayInfo;
@@ -117,6 +120,7 @@
import com.android.server.display.ColorDisplayService;
import com.android.server.policy.WindowManagerPolicy;
import com.android.server.policy.WindowManagerPolicy.StartingSurface;
+import com.android.server.wm.RemoteAnimationController.RemoteAnimationRecord;
import com.android.server.wm.WindowManagerService.H;
import java.io.PrintWriter;
@@ -261,7 +265,18 @@
/** Whether our surface was set to be showing in the last call to {@link #prepareSurfaces} */
private boolean mLastSurfaceShowing = true;
+ /**
+ * This gets used during some open/close transitions as well as during a change transition
+ * where it represents the starting-state snapshot.
+ */
private AppWindowThumbnail mThumbnail;
+ private final Rect mTransitStartRect = new Rect();
+
+ /**
+ * This leash is used to "freeze" the app surface in place after the state change, but before
+ * the animation is ready to start.
+ */
+ private SurfaceControl mTransitChangeLeash = null;
/** Have we been asked to have this token keep the screen frozen? */
private boolean mFreezingScreen;
@@ -272,6 +287,7 @@
private final Point mTmpPoint = new Point();
private final Rect mTmpRect = new Rect();
+ private final Rect mTmpPrevBounds = new Rect();
private RemoteAnimationDefinition mRemoteAnimationDefinition;
private AnimatingAppWindowTokenRegistry mAnimatingAppWindowTokenRegistry;
@@ -810,6 +826,7 @@
boolean delayed = commitVisibility(null, false, TRANSIT_UNSET, true, mVoiceInteraction);
getDisplayContent().mOpeningApps.remove(this);
+ getDisplayContent().mChangingApps.remove(this);
getDisplayContent().mUnknownAppVisibilityController.appRemovedOrHidden(this);
mWmService.mTaskSnapshotController.onAppRemoved(this);
waitingToShow = false;
@@ -1528,6 +1545,7 @@
@Override
public void onConfigurationChanged(Configuration newParentConfig) {
final int prevWinMode = getWindowingMode();
+ mTmpPrevBounds.set(getBounds());
super.onConfigurationChanged(newParentConfig);
final int winMode = getWindowingMode();
@@ -1559,9 +1577,68 @@
mDisplayContent.mPinnedStackControllerLocked.saveReentrySnapFraction(this,
stackBounds);
}
+ } else if (shouldStartChangeTransition(prevWinMode, winMode)) {
+ initializeChangeTransition(mTmpPrevBounds);
}
}
+ private boolean shouldStartChangeTransition(int prevWinMode, int newWinMode) {
+ if (!isVisible() || getDisplayContent().mAppTransition.isTransitionSet()) {
+ return false;
+ }
+ // Only do an animation into and out-of freeform mode for now. Other mode
+ // transition animations are currently handled by system-ui.
+ return (prevWinMode == WINDOWING_MODE_FREEFORM) != (newWinMode == WINDOWING_MODE_FREEFORM);
+ }
+
+ /**
+ * Initializes a change transition. Because the app is visible already, there is a small period
+ * of time where the user can see the app content/window update before the transition starts.
+ * To prevent this, we immediately take a snapshot and place the app/snapshot into a leash which
+ * "freezes" the location/crop until the transition starts.
+ * <p>
+ * Here's a walk-through of the process:
+ * 1. Create a temporary leash ("interim-change-leash") and reparent the app to it.
+ * 2. Set the temporary leash's position/crop to the current state.
+ * 3. Create a snapshot and place that at the top of the leash to cover up content changes.
+ * 4. Once the transition is ready, it will reparent the app to the animation leash.
+ * 5. Detach the interim-change-leash.
+ */
+ private void initializeChangeTransition(Rect startBounds) {
+ mDisplayContent.prepareAppTransition(TRANSIT_TASK_CHANGE_WINDOWING_MODE,
+ false /* alwaysKeepCurrent */, 0, false /* forceOverride */);
+ mDisplayContent.mChangingApps.add(this);
+ mTransitStartRect.set(startBounds);
+
+ final SurfaceControl.Builder builder = makeAnimationLeash()
+ .setParent(getAnimationLeashParent())
+ .setName(getSurfaceControl() + " - interim-change-leash");
+ mTransitChangeLeash = builder.build();
+ Transaction t = getPendingTransaction();
+ t.setWindowCrop(mTransitChangeLeash, startBounds.width(), startBounds.height());
+ t.setPosition(mTransitChangeLeash, startBounds.left, startBounds.top);
+ t.show(mTransitChangeLeash);
+ t.reparent(getSurfaceControl(), mTransitChangeLeash);
+ onAnimationLeashCreated(t, mTransitChangeLeash);
+
+ if (mThumbnail == null && getTask() != null) {
+ final TaskSnapshotController snapshotCtrl = mWmService.mTaskSnapshotController;
+ final ArraySet<Task> tasks = new ArraySet<>();
+ tasks.add(getTask());
+ snapshotCtrl.snapshotTasks(tasks);
+ snapshotCtrl.addSkipClosingAppSnapshotTasks(tasks);
+ final ActivityManager.TaskSnapshot snapshot = snapshotCtrl.getSnapshot(
+ getTask().mTaskId, getTask().mUserId, false /* restoreFromDisk */,
+ false /* reducedResolution */);
+ mThumbnail = new AppWindowThumbnail(t, this, snapshot.getSnapshot(),
+ true /* relative */);
+ }
+ }
+
+ boolean isInChangeTransition() {
+ return mTransitChangeLeash != null || isChangeTransition(mTransit);
+ }
+
@Override
void checkAppWindowsReadyToShow() {
if (allDrawn == mLastAllDrawn) {
@@ -2242,6 +2319,15 @@
return getBounds();
}
+ private static boolean isChangeTransition(int transit) {
+ return transit == TRANSIT_TASK_CHANGE_WINDOWING_MODE;
+ }
+
+ private int getDefaultChangeTransitionDuration() {
+ return (int) (AppTransition.DEFAULT_APP_TRANSITION_DURATION
+ * mWmService.getTransitionAnimationScaleLocked());
+ }
+
boolean applyAnimationLocked(WindowManager.LayoutParams lp, int transit, boolean enter,
boolean isVoiceInteraction) {
@@ -2260,13 +2346,35 @@
Trace.traceBegin(TRACE_TAG_WINDOW_MANAGER, "AWT#applyAnimationLocked");
if (okToAnimate()) {
final AnimationAdapter adapter;
+ AnimationAdapter thumbnailAdapter = null;
getAnimationBounds(mTmpPoint, mTmpRect);
+ boolean isChanging = isChangeTransition(transit) && mThumbnail != null;
+
// Delaying animation start isn't compatible with remote animations at all.
if (getDisplayContent().mAppTransition.getRemoteAnimationController() != null
&& !mSurfaceAnimator.isAnimationStartDelayed()) {
- adapter = getDisplayContent().mAppTransition.getRemoteAnimationController()
- .createAnimationAdapter(this, mTmpPoint, mTmpRect);
+ RemoteAnimationRecord adapters =
+ getDisplayContent().mAppTransition.getRemoteAnimationController()
+ .createRemoteAnimationRecord(this, mTmpPoint, mTmpRect,
+ (isChanging ? mTransitStartRect : null));
+ adapter = adapters.mAdapter;
+ thumbnailAdapter = adapters.mThumbnailAdapter;
+ } else if (isChanging) {
+ int duration = getDefaultChangeTransitionDuration();
+ mTmpRect.offsetTo(mTmpPoint.x, mTmpPoint.y);
+ adapter = new LocalAnimationAdapter(
+ new WindowChangeAnimationSpec(mTransitStartRect, mTmpRect,
+ getDisplayContent().getDisplayInfo(), duration,
+ true /* isAppAnimation */, false /* isThumbnail */),
+ mWmService.mSurfaceAnimationRunner);
+ thumbnailAdapter = new LocalAnimationAdapter(
+ new WindowChangeAnimationSpec(mTransitStartRect, mTmpRect,
+ getDisplayContent().getDisplayInfo(), duration,
+ true /* isAppAnimation */, true /* isThumbnail */),
+ mWmService.mSurfaceAnimationRunner);
+ mTransit = transit;
+ mTransitFlags = getDisplayContent().mAppTransition.getTransitFlags();
} else {
final int appStackClipMode =
getDisplayContent().mAppTransition.getAppStackClipMode();
@@ -2294,6 +2402,10 @@
if (adapter.getShowWallpaper()) {
mDisplayContent.pendingLayoutChanges |= FINISH_LAYOUT_REDO_WALLPAPER;
}
+ if (thumbnailAdapter != null) {
+ mThumbnail.startAnimation(
+ getPendingTransaction(), thumbnailAdapter, !isVisible());
+ }
}
} else {
cancelAnimation();
@@ -2429,6 +2541,17 @@
final DisplayContent dc = getDisplayContent();
dc.assignStackOrdering();
+
+ if (leash == mTransitChangeLeash) {
+ // This is a temporary state so skip any animation notifications
+ return;
+ } else if (mTransitChangeLeash != null) {
+ // unparent mTransitChangeLeash for clean-up
+ t.hide(mTransitChangeLeash);
+ t.reparent(mTransitChangeLeash, null);
+ mTransitChangeLeash = null;
+ }
+
if (mAnimatingAppWindowTokenRegistry != null) {
mAnimatingAppWindowTokenRegistry.notifyStarting(this);
}
@@ -2487,6 +2610,12 @@
+ " okToAnimate=" + okToAnimate()
+ " startingDisplayed=" + startingDisplayed);
+ // clean up thumbnail window
+ if (mThumbnail != null) {
+ mThumbnail.destroy();
+ mThumbnail = null;
+ }
+
// WindowState.onExitAnimationDone might modify the children list, so make a copy and then
// traverse the copy.
final ArrayList<WindowState> children = new ArrayList<>(mChildren);
@@ -2518,14 +2647,30 @@
@Override
void cancelAnimation() {
- super.cancelAnimation();
+ cancelAnimationOnly();
clearThumbnail();
+ if (mTransitChangeLeash != null) {
+ getPendingTransaction().hide(mTransitChangeLeash);
+ getPendingTransaction().reparent(mTransitChangeLeash, null);
+ mTransitChangeLeash = null;
+ }
+ }
+
+ /**
+ * This only cancels the animation. It doesn't do other teardown like cleaning-up thumbnail
+ * or interim leashes.
+ * <p>
+ * Used when canceling in preparation for starting a new animation.
+ */
+ void cancelAnimationOnly() {
+ super.cancelAnimation();
}
boolean isWaitingForTransitionStart() {
return getDisplayContent().mAppTransition.isTransitionSet()
&& (getDisplayContent().mOpeningApps.contains(this)
- || getDisplayContent().mClosingApps.contains(this));
+ || getDisplayContent().mClosingApps.contains(this)
+ || getDisplayContent().mChangingApps.contains(this));
}
public int getTransit() {
@@ -2835,6 +2980,7 @@
void removeFromPendingTransition() {
if (isWaitingForTransitionStart() && mDisplayContent != null) {
mDisplayContent.mOpeningApps.remove(this);
+ mDisplayContent.mChangingApps.remove(this);
mDisplayContent.mClosingApps.remove(this);
}
}