/* * Copyright (C) 2015 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.android.systemui.stackdivider; import static android.view.PointerIcon.TYPE_HORIZONTAL_DOUBLE_ARROW; import static android.view.PointerIcon.TYPE_VERTICAL_DOUBLE_ARROW; import static android.view.WindowManager.DOCKED_RIGHT; import android.animation.AnimationHandler; import android.animation.Animator; import android.animation.AnimatorListenerAdapter; import android.animation.ValueAnimator; import android.annotation.Nullable; import android.content.Context; import android.content.res.Configuration; import android.graphics.Matrix; import android.graphics.Rect; import android.graphics.Region; import android.graphics.Region.Op; import android.hardware.display.DisplayManager; import android.os.Bundle; import android.os.Handler; import android.os.RemoteException; import android.util.AttributeSet; import android.util.Slog; import android.view.Display; import android.view.MotionEvent; import android.view.PointerIcon; import android.view.SurfaceControl; import android.view.SurfaceControl.Transaction; import android.view.VelocityTracker; import android.view.View; import android.view.View.OnTouchListener; import android.view.ViewConfiguration; import android.view.ViewRootImpl; import android.view.ViewTreeObserver.InternalInsetsInfo; import android.view.ViewTreeObserver.OnComputeInternalInsetsListener; import android.view.WindowManager; import android.view.accessibility.AccessibilityNodeInfo; import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction; import android.view.animation.Interpolator; import android.view.animation.PathInterpolator; import android.widget.FrameLayout; import com.android.internal.graphics.SfVsyncFrameCallbackProvider; import com.android.internal.logging.MetricsLogger; import com.android.internal.logging.nano.MetricsProto.MetricsEvent; import com.android.internal.policy.DividerSnapAlgorithm; import com.android.internal.policy.DividerSnapAlgorithm.SnapTarget; import com.android.internal.policy.DockedDividerUtils; import com.android.systemui.Dependency; import com.android.systemui.Interpolators; import com.android.systemui.R; import com.android.systemui.recents.OverviewProxyService; import com.android.systemui.statusbar.FlingAnimationUtils; import java.util.function.Consumer; /** * Docked stack divider. */ public class DividerView extends FrameLayout implements OnTouchListener, OnComputeInternalInsetsListener { private static final String TAG = "DividerView"; private static final boolean DEBUG = Divider.DEBUG; public interface DividerCallbacks { void onDraggingStart(); void onDraggingEnd(); void growRecents(); } static final long TOUCH_ANIMATION_DURATION = 150; static final long TOUCH_RELEASE_ANIMATION_DURATION = 200; public static final int INVALID_RECENTS_GROW_TARGET = -1; private static final int LOG_VALUE_RESIZE_50_50 = 0; private static final int LOG_VALUE_RESIZE_DOCKED_SMALLER = 1; private static final int LOG_VALUE_RESIZE_DOCKED_LARGER = 2; private static final int LOG_VALUE_UNDOCK_MAX_DOCKED = 0; private static final int LOG_VALUE_UNDOCK_MAX_OTHER = 1; private static final int TASK_POSITION_SAME = Integer.MAX_VALUE; /** * How much the background gets scaled when we are in the minimized dock state. */ private static final float MINIMIZE_DOCK_SCALE = 0f; private static final float ADJUSTED_FOR_IME_SCALE = 0.5f; private static final PathInterpolator SLOWDOWN_INTERPOLATOR = new PathInterpolator(0.5f, 1f, 0.5f, 1f); private static final PathInterpolator DIM_INTERPOLATOR = new PathInterpolator(.23f, .87f, .52f, -0.11f); private static final Interpolator IME_ADJUST_INTERPOLATOR = new PathInterpolator(0.2f, 0f, 0.1f, 1f); private DividerHandleView mHandle; private View mBackground; private MinimizedDockShadow mMinimizedShadow; private int mStartX; private int mStartY; private int mStartPosition; private int mDockSide; private boolean mMoving; private int mTouchSlop; private boolean mBackgroundLifted; private boolean mIsInMinimizeInteraction; SnapTarget mSnapTargetBeforeMinimized; private int mDividerInsets; private final Display mDefaultDisplay; private int mDividerSize; private int mTouchElevation; private int mLongPressEntraceAnimDuration; private final Rect mDockedRect = new Rect(); private final Rect mDockedTaskRect = new Rect(); private final Rect mOtherTaskRect = new Rect(); private final Rect mOtherRect = new Rect(); private final Rect mDockedInsetRect = new Rect(); private final Rect mOtherInsetRect = new Rect(); private final Rect mLastResizeRect = new Rect(); private final Rect mTmpRect = new Rect(); private WindowManagerProxy mWindowManagerProxy; private DividerWindowManager mWindowManager; private VelocityTracker mVelocityTracker; private FlingAnimationUtils mFlingAnimationUtils; private SplitDisplayLayout mSplitLayout; private DividerImeController mImeController; private DividerCallbacks mCallback; private final AnimationHandler mAnimationHandler = new AnimationHandler(); private boolean mGrowRecents; private ValueAnimator mCurrentAnimator; private boolean mEntranceAnimationRunning; private boolean mExitAnimationRunning; private int mExitStartPosition; private boolean mDockedStackMinimized; private boolean mHomeStackResizable; private boolean mAdjustedForIme; private DividerState mState; private SplitScreenTaskOrganizer mTiles; boolean mFirstLayout = true; int mDividerPositionX; int mDividerPositionY; private final Matrix mTmpMatrix = new Matrix(); private final float[] mTmpValues = new float[9]; // The view is removed or in the process of been removed from the system. private boolean mRemoved; // Whether the surface for this view has been hidden regardless of actual visibility. This is // used interact with keyguard. private boolean mSurfaceHidden = false; private final Handler mHandler = new Handler(); private final AccessibilityDelegate mHandleDelegate = new AccessibilityDelegate() { @Override public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) { super.onInitializeAccessibilityNodeInfo(host, info); final DividerSnapAlgorithm snapAlgorithm = getSnapAlgorithm(); if (isHorizontalDivision()) { info.addAction(new AccessibilityAction(R.id.action_move_tl_full, mContext.getString(R.string.accessibility_action_divider_top_full))); if (snapAlgorithm.isFirstSplitTargetAvailable()) { info.addAction(new AccessibilityAction(R.id.action_move_tl_70, mContext.getString(R.string.accessibility_action_divider_top_70))); } if (snapAlgorithm.showMiddleSplitTargetForAccessibility()) { // Only show the middle target if there are more than 1 split target info.addAction(new AccessibilityAction(R.id.action_move_tl_50, mContext.getString(R.string.accessibility_action_divider_top_50))); } if (snapAlgorithm.isLastSplitTargetAvailable()) { info.addAction(new AccessibilityAction(R.id.action_move_tl_30, mContext.getString(R.string.accessibility_action_divider_top_30))); } info.addAction(new AccessibilityAction(R.id.action_move_rb_full, mContext.getString(R.string.accessibility_action_divider_bottom_full))); } else { info.addAction(new AccessibilityAction(R.id.action_move_tl_full, mContext.getString(R.string.accessibility_action_divider_left_full))); if (snapAlgorithm.isFirstSplitTargetAvailable()) { info.addAction(new AccessibilityAction(R.id.action_move_tl_70, mContext.getString(R.string.accessibility_action_divider_left_70))); } if (snapAlgorithm.showMiddleSplitTargetForAccessibility()) { // Only show the middle target if there are more than 1 split target info.addAction(new AccessibilityAction(R.id.action_move_tl_50, mContext.getString(R.string.accessibility_action_divider_left_50))); } if (snapAlgorithm.isLastSplitTargetAvailable()) { info.addAction(new AccessibilityAction(R.id.action_move_tl_30, mContext.getString(R.string.accessibility_action_divider_left_30))); } info.addAction(new AccessibilityAction(R.id.action_move_rb_full, mContext.getString(R.string.accessibility_action_divider_right_full))); } } @Override public boolean performAccessibilityAction(View host, int action, Bundle args) { int currentPosition = getCurrentPosition(); SnapTarget nextTarget = null; DividerSnapAlgorithm snapAlgorithm = mSplitLayout.getSnapAlgorithm(); if (action == R.id.action_move_tl_full) { nextTarget = snapAlgorithm.getDismissEndTarget(); } else if (action == R.id.action_move_tl_70) { nextTarget = snapAlgorithm.getLastSplitTarget(); } else if (action == R.id.action_move_tl_50) { nextTarget = snapAlgorithm.getMiddleTarget(); } else if (action == R.id.action_move_tl_30) { nextTarget = snapAlgorithm.getFirstSplitTarget(); } else if (action == R.id.action_move_rb_full) { nextTarget = snapAlgorithm.getDismissStartTarget(); } if (nextTarget != null) { startDragging(true /* animate */, false /* touching */); stopDragging(currentPosition, nextTarget, 250, Interpolators.FAST_OUT_SLOW_IN); return true; } return super.performAccessibilityAction(host, action, args); } }; private final Runnable mResetBackgroundRunnable = new Runnable() { @Override public void run() { resetBackground(); } }; private Runnable mUpdateEmbeddedMatrix = () -> { if (getViewRootImpl() == null) { return; } if (isHorizontalDivision()) { mTmpMatrix.setTranslate(0, mDividerPositionY - mDividerInsets); } else { mTmpMatrix.setTranslate(mDividerPositionX - mDividerInsets, 0); } mTmpMatrix.getValues(mTmpValues); try { getViewRootImpl().getAccessibilityEmbeddedConnection().setScreenMatrix(mTmpValues); } catch (RemoteException e) { } }; public DividerView(Context context) { this(context, null); } public DividerView(Context context, @Nullable AttributeSet attrs) { this(context, attrs, 0); } public DividerView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { this(context, attrs, defStyleAttr, 0); } public DividerView(Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) { super(context, attrs, defStyleAttr, defStyleRes); final DisplayManager displayManager = (DisplayManager) mContext.getSystemService(Context.DISPLAY_SERVICE); mDefaultDisplay = displayManager.getDisplay(Display.DEFAULT_DISPLAY); mAnimationHandler.setProvider(new SfVsyncFrameCallbackProvider()); } @Override protected void onFinishInflate() { super.onFinishInflate(); mHandle = findViewById(R.id.docked_divider_handle); mBackground = findViewById(R.id.docked_divider_background); mMinimizedShadow = findViewById(R.id.minimized_dock_shadow); mHandle.setOnTouchListener(this); final int dividerWindowWidth = getResources().getDimensionPixelSize( com.android.internal.R.dimen.docked_stack_divider_thickness); mDividerInsets = getResources().getDimensionPixelSize( com.android.internal.R.dimen.docked_stack_divider_insets); mDividerSize = dividerWindowWidth - 2 * mDividerInsets; mTouchElevation = getResources().getDimensionPixelSize( R.dimen.docked_stack_divider_lift_elevation); mLongPressEntraceAnimDuration = getResources().getInteger( R.integer.long_press_dock_anim_duration); mGrowRecents = getResources().getBoolean(R.bool.recents_grow_in_multiwindow); mTouchSlop = ViewConfiguration.get(mContext).getScaledTouchSlop(); mFlingAnimationUtils = new FlingAnimationUtils(getResources().getDisplayMetrics(), 0.3f); boolean landscape = getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE; mHandle.setPointerIcon(PointerIcon.getSystemIcon(getContext(), landscape ? TYPE_HORIZONTAL_DOUBLE_ARROW : TYPE_VERTICAL_DOUBLE_ARROW)); getViewTreeObserver().addOnComputeInternalInsetsListener(this); mHandle.setAccessibilityDelegate(mHandleDelegate); } @Override protected void onAttachedToWindow() { super.onAttachedToWindow(); // Save the current target if not minimized once attached to window if (mDockSide != WindowManager.DOCKED_INVALID && !mIsInMinimizeInteraction) { saveSnapTargetBeforeMinimized(mSnapTargetBeforeMinimized); } mFirstLayout = true; } void onDividerRemoved() { mRemoved = true; mCallback = null; } @Override protected void onLayout(boolean changed, int left, int top, int right, int bottom) { super.onLayout(changed, left, top, right, bottom); if (mFirstLayout) { // Wait for first layout so that the ViewRootImpl surface has been created. initializeSurfaceState(); mFirstLayout = false; } int minimizeLeft = 0; int minimizeTop = 0; if (mDockSide == WindowManager.DOCKED_TOP) { minimizeTop = mBackground.getTop(); } else if (mDockSide == WindowManager.DOCKED_LEFT) { minimizeLeft = mBackground.getLeft(); } else if (mDockSide == WindowManager.DOCKED_RIGHT) { minimizeLeft = mBackground.getRight() - mMinimizedShadow.getWidth(); } mMinimizedShadow.layout(minimizeLeft, minimizeTop, minimizeLeft + mMinimizedShadow.getMeasuredWidth(), minimizeTop + mMinimizedShadow.getMeasuredHeight()); if (changed) { notifySplitScreenBoundsChanged(); } } public void injectDependencies(DividerWindowManager windowManager, DividerState dividerState, DividerCallbacks callback, SplitScreenTaskOrganizer tiles, SplitDisplayLayout sdl, DividerImeController imeController, WindowManagerProxy wmProxy) { mWindowManager = windowManager; mState = dividerState; mCallback = callback; mTiles = tiles; mSplitLayout = sdl; mImeController = imeController; mWindowManagerProxy = wmProxy; if (mState.mRatioPositionBeforeMinimized == 0) { // Set the middle target as the initial state mSnapTargetBeforeMinimized = mSplitLayout.getSnapAlgorithm().getMiddleTarget(); } else { repositionSnapTargetBeforeMinimized(); } } public Rect getNonMinimizedSplitScreenSecondaryBounds() { mOtherTaskRect.set(mSplitLayout.mSecondary); return mOtherTaskRect; } private boolean inSplitMode() { return getVisibility() == VISIBLE; } /** Unlike setVisible, this directly hides the surface without changing view visibility. */ void setHidden(boolean hidden) { if (mSurfaceHidden == hidden) { return; } mSurfaceHidden = hidden; post(() -> { final SurfaceControl sc = getWindowSurfaceControl(); if (sc == null) { return; } Transaction t = mTiles.getTransaction(); if (hidden) { t.hide(sc); } else { t.show(sc); } mImeController.setDimsHidden(t, hidden); t.apply(); mTiles.releaseTransaction(t); }); } boolean isHidden() { return mSurfaceHidden; } public boolean startDragging(boolean animate, boolean touching) { cancelFlingAnimation(); if (touching) { mHandle.setTouching(true, animate); } mDockSide = mSplitLayout.getPrimarySplitSide(); mWindowManagerProxy.setResizing(true); if (touching) { mWindowManager.setSlippery(false); liftBackground(); } if (mCallback != null) { mCallback.onDraggingStart(); } return inSplitMode(); } public void stopDragging(int position, float velocity, boolean avoidDismissStart, boolean logMetrics) { mHandle.setTouching(false, true /* animate */); fling(position, velocity, avoidDismissStart, logMetrics); mWindowManager.setSlippery(true); releaseBackground(); } public void stopDragging(int position, SnapTarget target, long duration, Interpolator interpolator) { stopDragging(position, target, duration, 0 /* startDelay*/, 0 /* endDelay */, interpolator); } public void stopDragging(int position, SnapTarget target, long duration, Interpolator interpolator, long endDelay) { stopDragging(position, target, duration, 0 /* startDelay*/, endDelay, interpolator); } public void stopDragging(int position, SnapTarget target, long duration, long startDelay, long endDelay, Interpolator interpolator) { mHandle.setTouching(false, true /* animate */); flingTo(position, target, duration, startDelay, endDelay, interpolator); mWindowManager.setSlippery(true); releaseBackground(); } private void stopDragging() { mHandle.setTouching(false, true /* animate */); mWindowManager.setSlippery(true); releaseBackground(); } private void updateDockSide() { mDockSide = mSplitLayout.getPrimarySplitSide(); mMinimizedShadow.setDockSide(mDockSide); } public DividerSnapAlgorithm getSnapAlgorithm() { return mDockedStackMinimized ? mSplitLayout.getMinimizedSnapAlgorithm(mHomeStackResizable) : mSplitLayout.getSnapAlgorithm(); } public int getCurrentPosition() { return isHorizontalDivision() ? mDividerPositionY : mDividerPositionX; } public boolean isMinimized() { return mDockedStackMinimized; } @Override public boolean onTouch(View v, MotionEvent event) { convertToScreenCoordinates(event); final int action = event.getAction() & MotionEvent.ACTION_MASK; switch (action) { case MotionEvent.ACTION_DOWN: mVelocityTracker = VelocityTracker.obtain(); mVelocityTracker.addMovement(event); mStartX = (int) event.getX(); mStartY = (int) event.getY(); boolean result = startDragging(true /* animate */, true /* touching */); if (!result) { // Weren't able to start dragging successfully, so cancel it again. stopDragging(); } mStartPosition = getCurrentPosition(); mMoving = false; return result; case MotionEvent.ACTION_MOVE: mVelocityTracker.addMovement(event); int x = (int) event.getX(); int y = (int) event.getY(); boolean exceededTouchSlop = isHorizontalDivision() && Math.abs(y - mStartY) > mTouchSlop || (!isHorizontalDivision() && Math.abs(x - mStartX) > mTouchSlop); if (!mMoving && exceededTouchSlop) { mStartX = x; mStartY = y; mMoving = true; } if (mMoving && mDockSide != WindowManager.DOCKED_INVALID) { SnapTarget snapTarget = getSnapAlgorithm().calculateSnapTarget( mStartPosition, 0 /* velocity */, false /* hardDismiss */); resizeStackSurfaces(calculatePosition(x, y), mStartPosition, snapTarget, null /* transaction */); } break; case MotionEvent.ACTION_UP: case MotionEvent.ACTION_CANCEL: mVelocityTracker.addMovement(event); x = (int) event.getRawX(); y = (int) event.getRawY(); mVelocityTracker.computeCurrentVelocity(1000); int position = calculatePosition(x, y); stopDragging(position, isHorizontalDivision() ? mVelocityTracker.getYVelocity() : mVelocityTracker.getXVelocity(), false /* avoidDismissStart */, true /* log */); mMoving = false; break; } return true; } private void logResizeEvent(SnapTarget snapTarget) { if (snapTarget == mSplitLayout.getSnapAlgorithm().getDismissStartTarget()) { MetricsLogger.action( mContext, MetricsEvent.ACTION_WINDOW_UNDOCK_MAX, dockSideTopLeft(mDockSide) ? LOG_VALUE_UNDOCK_MAX_OTHER : LOG_VALUE_UNDOCK_MAX_DOCKED); } else if (snapTarget == mSplitLayout.getSnapAlgorithm().getDismissEndTarget()) { MetricsLogger.action( mContext, MetricsEvent.ACTION_WINDOW_UNDOCK_MAX, dockSideBottomRight(mDockSide) ? LOG_VALUE_UNDOCK_MAX_OTHER : LOG_VALUE_UNDOCK_MAX_DOCKED); } else if (snapTarget == mSplitLayout.getSnapAlgorithm().getMiddleTarget()) { MetricsLogger.action(mContext, MetricsEvent.ACTION_WINDOW_DOCK_RESIZE, LOG_VALUE_RESIZE_50_50); } else if (snapTarget == mSplitLayout.getSnapAlgorithm().getFirstSplitTarget()) { MetricsLogger.action(mContext, MetricsEvent.ACTION_WINDOW_DOCK_RESIZE, dockSideTopLeft(mDockSide) ? LOG_VALUE_RESIZE_DOCKED_SMALLER : LOG_VALUE_RESIZE_DOCKED_LARGER); } else if (snapTarget == mSplitLayout.getSnapAlgorithm().getLastSplitTarget()) { MetricsLogger.action(mContext, MetricsEvent.ACTION_WINDOW_DOCK_RESIZE, dockSideTopLeft(mDockSide) ? LOG_VALUE_RESIZE_DOCKED_LARGER : LOG_VALUE_RESIZE_DOCKED_SMALLER); } } private void convertToScreenCoordinates(MotionEvent event) { event.setLocation(event.getRawX(), event.getRawY()); } private void fling(int position, float velocity, boolean avoidDismissStart, boolean logMetrics) { DividerSnapAlgorithm currentSnapAlgorithm = getSnapAlgorithm(); SnapTarget snapTarget = currentSnapAlgorithm.calculateSnapTarget(position, velocity); if (avoidDismissStart && snapTarget == currentSnapAlgorithm.getDismissStartTarget()) { snapTarget = currentSnapAlgorithm.getFirstSplitTarget(); } if (logMetrics) { logResizeEvent(snapTarget); } ValueAnimator anim = getFlingAnimator(position, snapTarget, 0 /* endDelay */); mFlingAnimationUtils.apply(anim, position, snapTarget.position, velocity); anim.start(); } private void flingTo(int position, SnapTarget target, long duration, long startDelay, long endDelay, Interpolator interpolator) { ValueAnimator anim = getFlingAnimator(position, target, endDelay); anim.setDuration(duration); anim.setStartDelay(startDelay); anim.setInterpolator(interpolator); anim.start(); } private ValueAnimator getFlingAnimator(int position, final SnapTarget snapTarget, final long endDelay) { if (mCurrentAnimator != null) { cancelFlingAnimation(); updateDockSide(); } if (DEBUG) Slog.d(TAG, "Getting fling " + position + "->" + snapTarget.position); final boolean taskPositionSameAtEnd = snapTarget.flag == SnapTarget.FLAG_NONE; ValueAnimator anim = ValueAnimator.ofInt(position, snapTarget.position); anim.addUpdateListener(animation -> resizeStackSurfaces((int) animation.getAnimatedValue(), taskPositionSameAtEnd && animation.getAnimatedFraction() == 1f ? TASK_POSITION_SAME : snapTarget.taskPosition, snapTarget, null /* transaction */)); Consumer endAction = cancelled -> { if (DEBUG) Slog.d(TAG, "End Fling " + cancelled + " min:" + mIsInMinimizeInteraction); final boolean wasMinimizeInteraction = mIsInMinimizeInteraction; // Reset minimized divider position after unminimized state animation finishes. if (!cancelled && !mDockedStackMinimized && mIsInMinimizeInteraction) { mIsInMinimizeInteraction = false; } boolean dismissed = commitSnapFlags(snapTarget); mWindowManagerProxy.setResizing(false); updateDockSide(); mCurrentAnimator = null; mEntranceAnimationRunning = false; mExitAnimationRunning = false; if (!dismissed && !wasMinimizeInteraction) { WindowManagerProxy.applyResizeSplits(snapTarget.position, mSplitLayout); } if (mCallback != null) { mCallback.onDraggingEnd(); } // Record last snap target the divider moved to if (!mIsInMinimizeInteraction) { // The last snapTarget position can be negative when the last divider position was // offscreen. In that case, save the middle (default) SnapTarget so calculating next // position isn't negative. final SnapTarget saveTarget; if (snapTarget.position < 0) { saveTarget = mSplitLayout.getSnapAlgorithm().getMiddleTarget(); } else { saveTarget = snapTarget; } final DividerSnapAlgorithm snapAlgo = mSplitLayout.getSnapAlgorithm(); if (saveTarget.position != snapAlgo.getDismissEndTarget().position && saveTarget.position != snapAlgo.getDismissStartTarget().position) { saveSnapTargetBeforeMinimized(saveTarget); } } notifySplitScreenBoundsChanged(); }; anim.addListener(new AnimatorListenerAdapter() { private boolean mCancelled; @Override public void onAnimationCancel(Animator animation) { mCancelled = true; } @Override public void onAnimationEnd(Animator animation) { long delay = 0; if (endDelay != 0) { delay = endDelay; } else if (mCancelled) { delay = 0; } if (delay == 0) { endAction.accept(mCancelled); } else { final Boolean cancelled = mCancelled; if (DEBUG) Slog.d(TAG, "Posting endFling " + cancelled + " d:" + delay + "ms"); mHandler.postDelayed(() -> endAction.accept(cancelled), delay); } } }); anim.setAnimationHandler(mAnimationHandler); mCurrentAnimator = anim; return anim; } private void notifySplitScreenBoundsChanged() { if (mSplitLayout.mPrimary == null || mSplitLayout.mSecondary == null) { return; } mOtherTaskRect.set(mSplitLayout.mSecondary); mTmpRect.set(mHandle.getLeft(), mHandle.getTop(), mHandle.getRight(), mHandle.getBottom()); if (isHorizontalDivision()) { mTmpRect.offsetTo(0, mDividerPositionY); } else { mTmpRect.offsetTo(mDividerPositionX, 0); } mWindowManagerProxy.setTouchRegion(mTmpRect); mTmpRect.set(mSplitLayout.mDisplayLayout.stableInsets()); switch (mSplitLayout.getPrimarySplitSide()) { case WindowManager.DOCKED_LEFT: mTmpRect.left = 0; break; case WindowManager.DOCKED_RIGHT: mTmpRect.right = 0; break; case WindowManager.DOCKED_TOP: mTmpRect.top = 0; break; } Dependency.get(OverviewProxyService.class) .notifySplitScreenBoundsChanged(mOtherTaskRect, mTmpRect); } private void cancelFlingAnimation() { if (mCurrentAnimator != null) { mCurrentAnimator.cancel(); } } private boolean commitSnapFlags(SnapTarget target) { if (target.flag == SnapTarget.FLAG_NONE) { return false; } final boolean dismissOrMaximize; if (target.flag == SnapTarget.FLAG_DISMISS_START) { dismissOrMaximize = mDockSide == WindowManager.DOCKED_LEFT || mDockSide == WindowManager.DOCKED_TOP; } else { dismissOrMaximize = mDockSide == WindowManager.DOCKED_RIGHT || mDockSide == WindowManager.DOCKED_BOTTOM; } mWindowManagerProxy.dismissOrMaximizeDocked(mTiles, mSplitLayout, dismissOrMaximize); Transaction t = mTiles.getTransaction(); setResizeDimLayer(t, true /* primary */, 0f); setResizeDimLayer(t, false /* primary */, 0f); t.apply(); mTiles.releaseTransaction(t); return true; } private void liftBackground() { if (mBackgroundLifted) { return; } if (isHorizontalDivision()) { mBackground.animate().scaleY(1.4f); } else { mBackground.animate().scaleX(1.4f); } mBackground.animate() .setInterpolator(Interpolators.TOUCH_RESPONSE) .setDuration(TOUCH_ANIMATION_DURATION) .translationZ(mTouchElevation) .start(); // Lift handle as well so it doesn't get behind the background, even though it doesn't // cast shadow. mHandle.animate() .setInterpolator(Interpolators.TOUCH_RESPONSE) .setDuration(TOUCH_ANIMATION_DURATION) .translationZ(mTouchElevation) .start(); mBackgroundLifted = true; } private void releaseBackground() { if (!mBackgroundLifted) { return; } mBackground.animate() .setInterpolator(Interpolators.FAST_OUT_SLOW_IN) .setDuration(TOUCH_RELEASE_ANIMATION_DURATION) .translationZ(0) .scaleX(1f) .scaleY(1f) .start(); mHandle.animate() .setInterpolator(Interpolators.FAST_OUT_SLOW_IN) .setDuration(TOUCH_RELEASE_ANIMATION_DURATION) .translationZ(0) .start(); mBackgroundLifted = false; } private void initializeSurfaceState() { int midPos = mSplitLayout.getSnapAlgorithm().getMiddleTarget().position; // Recalculate the split-layout's internal tile bounds mSplitLayout.resizeSplits(midPos); Transaction t = mTiles.getTransaction(); if (mDockedStackMinimized) { int position = mSplitLayout.getMinimizedSnapAlgorithm(mHomeStackResizable) .getMiddleTarget().position; calculateBoundsForPosition(position, mDockSide, mDockedRect); calculateBoundsForPosition(position, DockedDividerUtils.invertDockSide(mDockSide), mOtherRect); mDividerPositionX = mDividerPositionY = position; resizeSplitSurfaces(t, mDockedRect, mSplitLayout.mPrimary, mOtherRect, mSplitLayout.mSecondary); } else { resizeSplitSurfaces(t, mSplitLayout.mPrimary, null, mSplitLayout.mSecondary, null); } setResizeDimLayer(t, true /* primary */, 0.f /* alpha */); setResizeDimLayer(t, false /* secondary */, 0.f /* alpha */); t.apply(); mTiles.releaseTransaction(t); // Get the actually-visible bar dimensions (relative to full window). This is a thin // bar going through the center. final Rect dividerBar = isHorizontalDivision() ? new Rect(0, mDividerInsets, mSplitLayout.mDisplayLayout.width(), mDividerInsets + mDividerSize) : new Rect(mDividerInsets, 0, mDividerInsets + mDividerSize, mSplitLayout.mDisplayLayout.height()); final Region touchRegion = new Region(dividerBar); // Add in the "draggable" portion. While not visible, this is an expanded area that the // user can interact with. touchRegion.union(new Rect(mHandle.getLeft(), mHandle.getTop(), mHandle.getRight(), mHandle.getBottom())); mWindowManager.setTouchRegion(touchRegion); } void setMinimizedDockStack(boolean minimized, boolean isHomeStackResizable, Transaction t) { mHomeStackResizable = isHomeStackResizable; updateDockSide(); if (!minimized) { resetBackground(); } mMinimizedShadow.setAlpha(minimized ? 1f : 0f); if (mDockedStackMinimized != minimized) { mDockedStackMinimized = minimized; if (mSplitLayout.mDisplayLayout.rotation() != mDefaultDisplay.getRotation()) { // Splitscreen to minimize is about to starts after rotating landscape to seascape, // update display info and snap algorithm targets repositionSnapTargetBeforeMinimized(); } if (mIsInMinimizeInteraction != minimized || mCurrentAnimator != null) { cancelFlingAnimation(); if (minimized) { // Relayout to recalculate the divider shadow when minimizing requestLayout(); mIsInMinimizeInteraction = true; resizeStackSurfaces(mSplitLayout.getMinimizedSnapAlgorithm(mHomeStackResizable) .getMiddleTarget(), t); } else { resizeStackSurfaces(mSnapTargetBeforeMinimized, t); mIsInMinimizeInteraction = false; } } } } void enterSplitMode(boolean isHomeStackResizable) { post(() -> { final SurfaceControl sc = getWindowSurfaceControl(); if (sc == null) { return; } Transaction t = mTiles.getTransaction(); t.show(sc).apply(); mTiles.releaseTransaction(t); }); SnapTarget miniMid = mSplitLayout.getMinimizedSnapAlgorithm(isHomeStackResizable).getMiddleTarget(); if (mDockedStackMinimized) { mDividerPositionY = mDividerPositionX = miniMid.position; } } /** * Tries to grab a surface control from ViewRootImpl. If this isn't available for some reason * (ie. the window isn't ready yet), it will get the surfacecontrol that the WindowlessWM has * assigned to it. */ private SurfaceControl getWindowSurfaceControl() { final ViewRootImpl root = getViewRootImpl(); if (root == null) { return null; } SurfaceControl out = root.getSurfaceControl(); if (out != null && out.isValid()) { return out; } return mWindowManager.mSystemWindows.getViewSurface(this); } void exitSplitMode() { // Reset tile bounds final SurfaceControl sc = getWindowSurfaceControl(); if (sc == null) { return; } Transaction t = mTiles.getTransaction(); t.hide(sc).apply(); mTiles.releaseTransaction(t); int midPos = mSplitLayout.getSnapAlgorithm().getMiddleTarget().position; WindowManagerProxy.applyResizeSplits(midPos, mSplitLayout); } public void setMinimizedDockStack(boolean minimized, long animDuration, boolean isHomeStackResizable) { if (DEBUG) Slog.d(TAG, "setMinDock: " + mDockedStackMinimized + "->" + minimized); mHomeStackResizable = isHomeStackResizable; updateDockSide(); if (mDockedStackMinimized != minimized) { mIsInMinimizeInteraction = true; mDockedStackMinimized = minimized; stopDragging(minimized ? mSnapTargetBeforeMinimized.position : getCurrentPosition(), minimized ? mSplitLayout.getMinimizedSnapAlgorithm(mHomeStackResizable) .getMiddleTarget() : mSnapTargetBeforeMinimized, animDuration, Interpolators.FAST_OUT_SLOW_IN, 0); setAdjustedForIme(false, animDuration); } if (!minimized) { mBackground.animate().withEndAction(mResetBackgroundRunnable); } mBackground.animate() .setInterpolator(Interpolators.FAST_OUT_SLOW_IN) .setDuration(animDuration) .start(); } // Needed to end any currently playing animations when they might compete with other anims // (specifically, IME adjust animation immediately after leaving minimized). Someday maybe // these can be unified, but not today. void finishAnimations() { if (mCurrentAnimator != null) { mCurrentAnimator.end(); } } public void setAdjustedForIme(boolean adjustedForIme, long animDuration) { if (mAdjustedForIme == adjustedForIme) { return; } updateDockSide(); mHandle.animate() .setInterpolator(IME_ADJUST_INTERPOLATOR) .setDuration(animDuration) .alpha(adjustedForIme ? 0f : 1f) .start(); if (mDockSide == WindowManager.DOCKED_TOP) { mBackground.setPivotY(0); mBackground.animate() .scaleY(adjustedForIme ? ADJUSTED_FOR_IME_SCALE : 1f); } if (!adjustedForIme) { mBackground.animate().withEndAction(mResetBackgroundRunnable); } mBackground.animate() .setInterpolator(IME_ADJUST_INTERPOLATOR) .setDuration(animDuration) .start(); mAdjustedForIme = adjustedForIme; } private void saveSnapTargetBeforeMinimized(SnapTarget target) { mSnapTargetBeforeMinimized = target; mState.mRatioPositionBeforeMinimized = (float) target.position / (isHorizontalDivision() ? mSplitLayout.mDisplayLayout.height() : mSplitLayout.mDisplayLayout.width()); } private void resetBackground() { mBackground.setPivotX(mBackground.getWidth() / 2); mBackground.setPivotY(mBackground.getHeight() / 2); mBackground.setScaleX(1f); mBackground.setScaleY(1f); mMinimizedShadow.setAlpha(0f); } @Override protected void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); } private void repositionSnapTargetBeforeMinimized() { int position = (int) (mState.mRatioPositionBeforeMinimized * (isHorizontalDivision() ? mSplitLayout.mDisplayLayout.height() : mSplitLayout.mDisplayLayout.width())); // Set the snap target before minimized but do not save until divider is attached and not // minimized because it does not know its minimized state yet. mSnapTargetBeforeMinimized = mSplitLayout.getSnapAlgorithm().calculateNonDismissingSnapTarget(position); } private int calculatePosition(int touchX, int touchY) { return isHorizontalDivision() ? calculateYPosition(touchY) : calculateXPosition(touchX); } public boolean isHorizontalDivision() { return getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT; } private int calculateXPosition(int touchX) { return mStartPosition + touchX - mStartX; } private int calculateYPosition(int touchY) { return mStartPosition + touchY - mStartY; } private void alignTopLeft(Rect containingRect, Rect rect) { int width = rect.width(); int height = rect.height(); rect.set(containingRect.left, containingRect.top, containingRect.left + width, containingRect.top + height); } private void alignBottomRight(Rect containingRect, Rect rect) { int width = rect.width(); int height = rect.height(); rect.set(containingRect.right - width, containingRect.bottom - height, containingRect.right, containingRect.bottom); } public void calculateBoundsForPosition(int position, int dockSide, Rect outRect) { DockedDividerUtils.calculateBoundsForPosition(position, dockSide, outRect, mSplitLayout.mDisplayLayout.width(), mSplitLayout.mDisplayLayout.height(), mDividerSize); } private void resizeStackSurfaces(SnapTarget taskSnapTarget, Transaction t) { resizeStackSurfaces(taskSnapTarget.position, taskSnapTarget.position, taskSnapTarget, t); } void resizeSplitSurfaces(Transaction t, Rect dockedRect, Rect otherRect) { resizeSplitSurfaces(t, dockedRect, null, otherRect, null); } private void resizeSplitSurfaces(Transaction t, Rect dockedRect, Rect dockedTaskRect, Rect otherRect, Rect otherTaskRect) { dockedTaskRect = dockedTaskRect == null ? dockedRect : dockedTaskRect; otherTaskRect = otherTaskRect == null ? otherRect : otherTaskRect; mDividerPositionX = mSplitLayout.getPrimarySplitSide() == DOCKED_RIGHT ? otherRect.right : dockedRect.right; mDividerPositionY = dockedRect.bottom; if (DEBUG) { Slog.d(TAG, "Resizing split surfaces: " + dockedRect + " " + dockedTaskRect + " " + otherRect + " " + otherTaskRect); } t.setPosition(mTiles.mPrimarySurface, dockedTaskRect.left, dockedTaskRect.top); Rect crop = new Rect(dockedRect); crop.offsetTo(-Math.min(dockedTaskRect.left - dockedRect.left, 0), -Math.min(dockedTaskRect.top - dockedRect.top, 0)); t.setWindowCrop(mTiles.mPrimarySurface, crop); t.setPosition(mTiles.mSecondarySurface, otherTaskRect.left, otherTaskRect.top); crop.set(otherRect); crop.offsetTo(-(otherTaskRect.left - otherRect.left), -(otherTaskRect.top - otherRect.top)); t.setWindowCrop(mTiles.mSecondarySurface, crop); final SurfaceControl dividerCtrl = getWindowSurfaceControl(); if (dividerCtrl != null) { if (isHorizontalDivision()) { t.setPosition(dividerCtrl, 0, mDividerPositionY - mDividerInsets); } else { t.setPosition(dividerCtrl, mDividerPositionX - mDividerInsets, 0); } } if (getViewRootImpl() != null) { mHandler.removeCallbacks(mUpdateEmbeddedMatrix); mHandler.post(mUpdateEmbeddedMatrix); } } void setResizeDimLayer(Transaction t, boolean primary, float alpha) { SurfaceControl dim = primary ? mTiles.mPrimaryDim : mTiles.mSecondaryDim; if (alpha <= 0.001f) { t.hide(dim); } else { t.setAlpha(dim, alpha); t.show(dim); } } void resizeStackSurfaces(int position, int taskPosition, SnapTarget taskSnapTarget, Transaction transaction) { if (mRemoved) { // This divider view has been removed so shouldn't have any additional influence. return; } calculateBoundsForPosition(position, mDockSide, mDockedRect); calculateBoundsForPosition(position, DockedDividerUtils.invertDockSide(mDockSide), mOtherRect); if (mDockedRect.equals(mLastResizeRect) && !mEntranceAnimationRunning) { return; } // Make sure shadows are updated if (mBackground.getZ() > 0f) { mBackground.invalidate(); } final boolean ownTransaction = transaction == null; final Transaction t = ownTransaction ? mTiles.getTransaction() : transaction; mLastResizeRect.set(mDockedRect); if (mIsInMinimizeInteraction) { calculateBoundsForPosition(mSnapTargetBeforeMinimized.position, mDockSide, mDockedTaskRect); calculateBoundsForPosition(mSnapTargetBeforeMinimized.position, DockedDividerUtils.invertDockSide(mDockSide), mOtherTaskRect); // Move a right-docked-app to line up with the divider while dragging it if (mDockSide == DOCKED_RIGHT) { mDockedTaskRect.offset(Math.max(position, -mDividerSize) - mDockedTaskRect.left + mDividerSize, 0); } resizeSplitSurfaces(t, mDockedRect, mDockedTaskRect, mOtherRect, mOtherTaskRect); if (ownTransaction) { t.apply(); mTiles.releaseTransaction(t); } return; } if (mEntranceAnimationRunning && taskPosition != TASK_POSITION_SAME) { calculateBoundsForPosition(taskPosition, mDockSide, mDockedTaskRect); // Move a docked app if from the right in position with the divider up to insets if (mDockSide == DOCKED_RIGHT) { mDockedTaskRect.offset(Math.max(position, -mDividerSize) - mDockedTaskRect.left + mDividerSize, 0); } calculateBoundsForPosition(taskPosition, DockedDividerUtils.invertDockSide(mDockSide), mOtherTaskRect); resizeSplitSurfaces(t, mDockedRect, mDockedTaskRect, mOtherRect, mOtherTaskRect); } else if (mExitAnimationRunning && taskPosition != TASK_POSITION_SAME) { calculateBoundsForPosition(taskPosition, mDockSide, mDockedTaskRect); mDockedInsetRect.set(mDockedTaskRect); calculateBoundsForPosition(mExitStartPosition, DockedDividerUtils.invertDockSide(mDockSide), mOtherTaskRect); mOtherInsetRect.set(mOtherTaskRect); applyExitAnimationParallax(mOtherTaskRect, position); // Move a right-docked-app to line up with the divider while dragging it if (mDockSide == DOCKED_RIGHT) { mDockedTaskRect.offset(position + mDividerSize, 0); } resizeSplitSurfaces(t, mDockedRect, mDockedTaskRect, mOtherRect, mOtherTaskRect); } else if (taskPosition != TASK_POSITION_SAME) { calculateBoundsForPosition(position, DockedDividerUtils.invertDockSide(mDockSide), mOtherRect); int dockSideInverted = DockedDividerUtils.invertDockSide(mDockSide); int taskPositionDocked = restrictDismissingTaskPosition(taskPosition, mDockSide, taskSnapTarget); int taskPositionOther = restrictDismissingTaskPosition(taskPosition, dockSideInverted, taskSnapTarget); calculateBoundsForPosition(taskPositionDocked, mDockSide, mDockedTaskRect); calculateBoundsForPosition(taskPositionOther, dockSideInverted, mOtherTaskRect); mTmpRect.set(0, 0, mSplitLayout.mDisplayLayout.width(), mSplitLayout.mDisplayLayout.height()); alignTopLeft(mDockedRect, mDockedTaskRect); alignTopLeft(mOtherRect, mOtherTaskRect); mDockedInsetRect.set(mDockedTaskRect); mOtherInsetRect.set(mOtherTaskRect); if (dockSideTopLeft(mDockSide)) { alignTopLeft(mTmpRect, mDockedInsetRect); alignBottomRight(mTmpRect, mOtherInsetRect); } else { alignBottomRight(mTmpRect, mDockedInsetRect); alignTopLeft(mTmpRect, mOtherInsetRect); } applyDismissingParallax(mDockedTaskRect, mDockSide, taskSnapTarget, position, taskPositionDocked); applyDismissingParallax(mOtherTaskRect, dockSideInverted, taskSnapTarget, position, taskPositionOther); resizeSplitSurfaces(t, mDockedRect, mDockedTaskRect, mOtherRect, mOtherTaskRect); } else { resizeSplitSurfaces(t, mDockedRect, null, mOtherRect, null); } SnapTarget closestDismissTarget = getSnapAlgorithm().getClosestDismissTarget(position); float dimFraction = getDimFraction(position, closestDismissTarget); setResizeDimLayer(t, isDismissTargetPrimary(closestDismissTarget), dimFraction); if (ownTransaction) { t.apply(); mTiles.releaseTransaction(t); } } private void applyExitAnimationParallax(Rect taskRect, int position) { if (mDockSide == WindowManager.DOCKED_TOP) { taskRect.offset(0, (int) ((position - mExitStartPosition) * 0.25f)); } else if (mDockSide == WindowManager.DOCKED_LEFT) { taskRect.offset((int) ((position - mExitStartPosition) * 0.25f), 0); } else if (mDockSide == WindowManager.DOCKED_RIGHT) { taskRect.offset((int) ((mExitStartPosition - position) * 0.25f), 0); } } private float getDimFraction(int position, SnapTarget dismissTarget) { if (mEntranceAnimationRunning) { return 0f; } float fraction = getSnapAlgorithm().calculateDismissingFraction(position); fraction = Math.max(0, Math.min(fraction, 1f)); fraction = DIM_INTERPOLATOR.getInterpolation(fraction); return fraction; } /** * When the snap target is dismissing one side, make sure that the dismissing side doesn't get * 0 size. */ private int restrictDismissingTaskPosition(int taskPosition, int dockSide, SnapTarget snapTarget) { if (snapTarget.flag == SnapTarget.FLAG_DISMISS_START && dockSideTopLeft(dockSide)) { return Math.max(mSplitLayout.getSnapAlgorithm().getFirstSplitTarget().position, mStartPosition); } else if (snapTarget.flag == SnapTarget.FLAG_DISMISS_END && dockSideBottomRight(dockSide)) { return Math.min(mSplitLayout.getSnapAlgorithm().getLastSplitTarget().position, mStartPosition); } else { return taskPosition; } } /** * Applies a parallax to the task when dismissing. */ private void applyDismissingParallax(Rect taskRect, int dockSide, SnapTarget snapTarget, int position, int taskPosition) { float fraction = Math.min(1, Math.max(0, mSplitLayout.getSnapAlgorithm().calculateDismissingFraction(position))); SnapTarget dismissTarget = null; SnapTarget splitTarget = null; int start = 0; if (position <= mSplitLayout.getSnapAlgorithm().getLastSplitTarget().position && dockSideTopLeft(dockSide)) { dismissTarget = mSplitLayout.getSnapAlgorithm().getDismissStartTarget(); splitTarget = mSplitLayout.getSnapAlgorithm().getFirstSplitTarget(); start = taskPosition; } else if (position >= mSplitLayout.getSnapAlgorithm().getLastSplitTarget().position && dockSideBottomRight(dockSide)) { dismissTarget = mSplitLayout.getSnapAlgorithm().getDismissEndTarget(); splitTarget = mSplitLayout.getSnapAlgorithm().getLastSplitTarget(); start = splitTarget.position; } if (dismissTarget != null && fraction > 0f && isDismissing(splitTarget, position, dockSide)) { fraction = calculateParallaxDismissingFraction(fraction, dockSide); int offsetPosition = (int) (start + fraction * (dismissTarget.position - splitTarget.position)); int width = taskRect.width(); int height = taskRect.height(); switch (dockSide) { case WindowManager.DOCKED_LEFT: taskRect.left = offsetPosition - width; taskRect.right = offsetPosition; break; case WindowManager.DOCKED_RIGHT: taskRect.left = offsetPosition + mDividerSize; taskRect.right = offsetPosition + width + mDividerSize; break; case WindowManager.DOCKED_TOP: taskRect.top = offsetPosition - height; taskRect.bottom = offsetPosition; break; case WindowManager.DOCKED_BOTTOM: taskRect.top = offsetPosition + mDividerSize; taskRect.bottom = offsetPosition + height + mDividerSize; break; } } } /** * @return for a specified {@code fraction}, this returns an adjusted value that simulates a * slowing down parallax effect */ private static float calculateParallaxDismissingFraction(float fraction, int dockSide) { float result = SLOWDOWN_INTERPOLATOR.getInterpolation(fraction) / 3.5f; // Less parallax at the top, just because. if (dockSide == WindowManager.DOCKED_TOP) { result /= 2f; } return result; } private static boolean isDismissing(SnapTarget snapTarget, int position, int dockSide) { if (dockSide == WindowManager.DOCKED_TOP || dockSide == WindowManager.DOCKED_LEFT) { return position < snapTarget.position; } else { return position > snapTarget.position; } } private boolean isDismissTargetPrimary(SnapTarget dismissTarget) { return (dismissTarget.flag == SnapTarget.FLAG_DISMISS_START && dockSideTopLeft(mDockSide)) || (dismissTarget.flag == SnapTarget.FLAG_DISMISS_END && dockSideBottomRight(mDockSide)); } /** * @return true if and only if {@code dockSide} is top or left */ private static boolean dockSideTopLeft(int dockSide) { return dockSide == WindowManager.DOCKED_TOP || dockSide == WindowManager.DOCKED_LEFT; } /** * @return true if and only if {@code dockSide} is bottom or right */ private static boolean dockSideBottomRight(int dockSide) { return dockSide == WindowManager.DOCKED_BOTTOM || dockSide == WindowManager.DOCKED_RIGHT; } @Override public void onComputeInternalInsets(InternalInsetsInfo inoutInfo) { inoutInfo.setTouchableInsets(InternalInsetsInfo.TOUCHABLE_INSETS_REGION); inoutInfo.touchableRegion.set(mHandle.getLeft(), mHandle.getTop(), mHandle.getRight(), mHandle.getBottom()); inoutInfo.touchableRegion.op(mBackground.getLeft(), mBackground.getTop(), mBackground.getRight(), mBackground.getBottom(), Op.UNION); } /** * Checks whether recents will grow when invoked. This happens in multi-window when recents is * very small. When invoking recents, we shrink the docked stack so recents has more space. * * @return the position of the divider when recents grows, or * {@link #INVALID_RECENTS_GROW_TARGET} if recents won't grow */ public int growsRecents() { boolean result = mGrowRecents && mDockSide == WindowManager.DOCKED_TOP && getCurrentPosition() == getSnapAlgorithm().getLastSplitTarget().position; if (result) { return getSnapAlgorithm().getMiddleTarget().position; } else { return INVALID_RECENTS_GROW_TARGET; } } void onRecentsActivityStarting() { if (mGrowRecents && mDockSide == WindowManager.DOCKED_TOP && getSnapAlgorithm().getMiddleTarget() != getSnapAlgorithm().getLastSplitTarget() && getCurrentPosition() == getSnapAlgorithm().getLastSplitTarget().position) { mState.growAfterRecentsDrawn = true; startDragging(false /* animate */, false /* touching */); } } void onDockedFirstAnimationFrame() { saveSnapTargetBeforeMinimized(mSplitLayout.getSnapAlgorithm().getMiddleTarget()); } void onDockedTopTask() { mState.growAfterRecentsDrawn = false; mState.animateAfterRecentsDrawn = true; startDragging(false /* animate */, false /* touching */); updateDockSide(); mEntranceAnimationRunning = true; resizeStackSurfaces(calculatePositionForInsetBounds(), mSplitLayout.getSnapAlgorithm().getMiddleTarget().position, mSplitLayout.getSnapAlgorithm().getMiddleTarget(), null /* transaction */); } void onRecentsDrawn() { updateDockSide(); final int position = calculatePositionForInsetBounds(); if (mState.animateAfterRecentsDrawn) { mState.animateAfterRecentsDrawn = false; mHandler.post(() -> { // Delay switching resizing mode because this might cause jank in recents animation // that's longer than this animation. stopDragging(position, getSnapAlgorithm().getMiddleTarget(), mLongPressEntraceAnimDuration, Interpolators.FAST_OUT_SLOW_IN, 200 /* endDelay */); }); } if (mState.growAfterRecentsDrawn) { mState.growAfterRecentsDrawn = false; updateDockSide(); if (mCallback != null) { mCallback.growRecents(); } stopDragging(position, getSnapAlgorithm().getMiddleTarget(), 336, Interpolators.FAST_OUT_SLOW_IN); } } void onUndockingTask() { int dockSide = mSplitLayout.getPrimarySplitSide(); if (inSplitMode()) { startDragging(false /* animate */, false /* touching */); SnapTarget target = dockSideTopLeft(dockSide) ? mSplitLayout.getSnapAlgorithm().getDismissEndTarget() : mSplitLayout.getSnapAlgorithm().getDismissStartTarget(); // Don't start immediately - give a little bit time to settle the drag resize change. mExitAnimationRunning = true; mExitStartPosition = getCurrentPosition(); stopDragging(mExitStartPosition, target, 336 /* duration */, 100 /* startDelay */, 0 /* endDelay */, Interpolators.FAST_OUT_SLOW_IN); } } private int calculatePositionForInsetBounds() { mSplitLayout.mDisplayLayout.getStableBounds(mTmpRect); return DockedDividerUtils.calculatePositionForBounds(mTmpRect, mDockSide, mDividerSize); } }