| /* |
| * Copyright (C) 2016 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.pip.phone; |
| |
| import static android.app.WindowConfiguration.ACTIVITY_TYPE_UNDEFINED; |
| import static android.app.WindowConfiguration.WINDOWING_MODE_PINNED; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.app.ActivityManager.StackInfo; |
| import android.app.IActivityTaskManager; |
| import android.content.Context; |
| import android.graphics.Point; |
| import android.graphics.PointF; |
| import android.graphics.Rect; |
| import android.os.Debug; |
| import android.os.RemoteException; |
| import android.util.Log; |
| |
| import androidx.dynamicanimation.animation.SpringForce; |
| |
| import com.android.systemui.pip.PipSnapAlgorithm; |
| import com.android.systemui.pip.PipTaskOrganizer; |
| import com.android.systemui.shared.system.WindowManagerWrapper; |
| import com.android.systemui.statusbar.FlingAnimationUtils; |
| import com.android.systemui.util.FloatingContentCoordinator; |
| import com.android.systemui.util.animation.FloatProperties; |
| import com.android.systemui.util.animation.PhysicsAnimator; |
| |
| import java.io.PrintWriter; |
| import java.util.function.Consumer; |
| |
| /** |
| * A helper to animate and manipulate the PiP. |
| */ |
| public class PipMotionHelper implements PipAppOpsListener.Callback, |
| FloatingContentCoordinator.FloatingContent { |
| |
| private static final String TAG = "PipMotionHelper"; |
| private static final boolean DEBUG = false; |
| |
| private static final int SHRINK_STACK_FROM_MENU_DURATION = 250; |
| private static final int EXPAND_STACK_TO_MENU_DURATION = 250; |
| private static final int EXPAND_STACK_TO_FULLSCREEN_DURATION = 300; |
| private static final int SHIFT_DURATION = 300; |
| |
| /** Friction to use for PIP when it moves via physics fling animations. */ |
| private static final float DEFAULT_FRICTION = 2f; |
| |
| // The fraction of the stack height that the user has to drag offscreen to dismiss the PiP |
| private static final float DISMISS_OFFSCREEN_FRACTION = 0.3f; |
| |
| private final Context mContext; |
| private final IActivityTaskManager mActivityTaskManager; |
| private final PipTaskOrganizer mPipTaskOrganizer; |
| |
| private PipMenuActivityController mMenuController; |
| private PipSnapAlgorithm mSnapAlgorithm; |
| private FlingAnimationUtils mFlingAnimationUtils; |
| |
| private final Rect mStableInsets = new Rect(); |
| |
| /** PIP's current bounds on the screen. */ |
| private final Rect mBounds = new Rect(); |
| |
| /** The bounds within which PIP's top-left coordinate is allowed to move. */ |
| private final Rect mMovementBounds = new Rect(); |
| |
| /** The region that all of PIP must stay within. */ |
| private final Rect mFloatingAllowedArea = new Rect(); |
| |
| /** |
| * Bounds that are animated using the physics animator. |
| */ |
| private final Rect mAnimatedBounds = new Rect(); |
| |
| /** The destination bounds to which PIP is animating. */ |
| private final Rect mAnimatingToBounds = new Rect(); |
| |
| /** Coordinator instance for resolving conflicts with other floating content. */ |
| private FloatingContentCoordinator mFloatingContentCoordinator; |
| |
| /** |
| * PhysicsAnimator instance for animating {@link #mAnimatedBounds} using physics animations. |
| */ |
| private PhysicsAnimator<Rect> mAnimatedBoundsPhysicsAnimator = PhysicsAnimator.getInstance( |
| mAnimatedBounds); |
| |
| /** |
| * Update listener that resizes the PIP to {@link #mAnimatedBounds}. |
| */ |
| private final PhysicsAnimator.UpdateListener<Rect> mResizePipUpdateListener = |
| (target, values) -> resizePipUnchecked(mAnimatedBounds); |
| |
| /** FlingConfig instances provided to PhysicsAnimator for fling gestures. */ |
| private PhysicsAnimator.FlingConfig mFlingConfigX; |
| private PhysicsAnimator.FlingConfig mFlingConfigY; |
| |
| /** SpringConfig to use for fling-then-spring animations. */ |
| private final PhysicsAnimator.SpringConfig mSpringConfig = |
| new PhysicsAnimator.SpringConfig( |
| SpringForce.STIFFNESS_MEDIUM, SpringForce.DAMPING_RATIO_LOW_BOUNCY); |
| |
| /** SpringConfig to use for springing PIP away from conflicting floating content. */ |
| private final PhysicsAnimator.SpringConfig mConflictResolutionSpringConfig = |
| new PhysicsAnimator.SpringConfig( |
| SpringForce.STIFFNESS_LOW, SpringForce.DAMPING_RATIO_LOW_BOUNCY); |
| |
| private final Consumer<Rect> mUpdateBoundsCallback = mBounds::set; |
| |
| public PipMotionHelper(Context context, IActivityTaskManager activityTaskManager, |
| PipTaskOrganizer pipTaskOrganizer, PipMenuActivityController menuController, |
| PipSnapAlgorithm snapAlgorithm, FlingAnimationUtils flingAnimationUtils, |
| FloatingContentCoordinator floatingContentCoordinator) { |
| mContext = context; |
| mActivityTaskManager = activityTaskManager; |
| mPipTaskOrganizer = pipTaskOrganizer; |
| mMenuController = menuController; |
| mSnapAlgorithm = snapAlgorithm; |
| mFlingAnimationUtils = flingAnimationUtils; |
| mFloatingContentCoordinator = floatingContentCoordinator; |
| onConfigurationChanged(); |
| } |
| |
| @NonNull |
| @Override |
| public Rect getFloatingBoundsOnScreen() { |
| return !mAnimatingToBounds.isEmpty() ? mAnimatingToBounds : mBounds; |
| } |
| |
| @NonNull |
| @Override |
| public Rect getAllowedFloatingBoundsRegion() { |
| return mFloatingAllowedArea; |
| } |
| |
| @Override |
| public void moveToBounds(@NonNull Rect bounds) { |
| animateToBounds(bounds, mConflictResolutionSpringConfig); |
| } |
| |
| /** |
| * Updates whenever the configuration changes. |
| */ |
| void onConfigurationChanged() { |
| mSnapAlgorithm.onConfigurationChanged(); |
| WindowManagerWrapper.getInstance().getStableInsets(mStableInsets); |
| } |
| |
| /** |
| * Synchronizes the current bounds with the pinned stack. |
| */ |
| void synchronizePinnedStackBounds() { |
| cancelAnimations(); |
| try { |
| StackInfo stackInfo = mActivityTaskManager.getStackInfo( |
| WINDOWING_MODE_PINNED, ACTIVITY_TYPE_UNDEFINED); |
| if (stackInfo != null) { |
| mBounds.set(stackInfo.bounds); |
| } |
| } catch (RemoteException e) { |
| Log.w(TAG, "Failed to get pinned stack bounds"); |
| } |
| } |
| |
| /** |
| * Tries to move the pinned stack to the given {@param bounds}. |
| */ |
| void movePip(Rect toBounds) { |
| movePip(toBounds, false /* isDragging */); |
| } |
| |
| /** |
| * Tries to move the pinned stack to the given {@param bounds}. |
| * |
| * @param isDragging Whether this movement is the result of a drag touch gesture. If so, we |
| * won't notify the floating content coordinator of this move, since that will |
| * happen when the gesture ends. |
| */ |
| void movePip(Rect toBounds, boolean isDragging) { |
| if (!isDragging) { |
| mFloatingContentCoordinator.onContentMoved(this); |
| } |
| |
| cancelAnimations(); |
| resizePipUnchecked(toBounds); |
| mBounds.set(toBounds); |
| } |
| |
| /** |
| * Resizes the pinned stack back to fullscreen. |
| */ |
| void expandPip() { |
| expandPip(false /* skipAnimation */); |
| } |
| |
| /** |
| * Resizes the pinned stack back to fullscreen. |
| */ |
| void expandPip(boolean skipAnimation) { |
| if (DEBUG) { |
| Log.d(TAG, "expandPip: skipAnimation=" + skipAnimation |
| + " callers=\n" + Debug.getCallers(5, " ")); |
| } |
| cancelAnimations(); |
| mMenuController.hideMenuWithoutResize(); |
| mPipTaskOrganizer.getUpdateHandler().post(() -> { |
| mPipTaskOrganizer.dismissPip(skipAnimation ? 0 : EXPAND_STACK_TO_FULLSCREEN_DURATION); |
| }); |
| } |
| |
| /** |
| * Dismisses the pinned stack. |
| */ |
| @Override |
| public void dismissPip() { |
| if (DEBUG) { |
| Log.d(TAG, "dismissPip: callers=\n" + Debug.getCallers(5, " ")); |
| } |
| cancelAnimations(); |
| mMenuController.hideMenuWithoutResize(); |
| mPipTaskOrganizer.getUpdateHandler().post(() -> { |
| try { |
| mActivityTaskManager.removeStacksInWindowingModes( |
| new int[]{ WINDOWING_MODE_PINNED }); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Failed to remove PiP", e); |
| } |
| }); |
| } |
| |
| /** Sets the movement bounds to use to constrain PIP position animations. */ |
| void setCurrentMovementBounds(Rect movementBounds) { |
| mMovementBounds.set(movementBounds); |
| rebuildFlingConfigs(); |
| |
| // The movement bounds represent the area within which we can move PIP's top-left position. |
| // The allowed area for all of PIP is those bounds plus PIP's width and height. |
| mFloatingAllowedArea.set(mMovementBounds); |
| mFloatingAllowedArea.right += mBounds.width(); |
| mFloatingAllowedArea.bottom += mBounds.height(); |
| } |
| |
| /** |
| * @return the PiP bounds. |
| */ |
| Rect getBounds() { |
| return mBounds; |
| } |
| |
| /** |
| * @return whether the PiP at the current bounds should be dismissed. |
| */ |
| boolean shouldDismissPip() { |
| Point displaySize = new Point(); |
| mContext.getDisplay().getRealSize(displaySize); |
| final int y = displaySize.y - mStableInsets.bottom; |
| if (mBounds.bottom > y) { |
| float offscreenFraction = (float) (mBounds.bottom - y) / mBounds.height(); |
| return offscreenFraction >= DISMISS_OFFSCREEN_FRACTION; |
| } |
| return false; |
| } |
| |
| /** |
| * Flings the PiP to the closest snap target. |
| */ |
| void flingToSnapTarget( |
| float velocityX, float velocityY, Runnable updateAction, @Nullable Runnable endAction) { |
| mAnimatedBounds.set(mBounds); |
| mAnimatedBoundsPhysicsAnimator |
| .flingThenSpring( |
| FloatProperties.RECT_X, velocityX, mFlingConfigX, mSpringConfig, |
| true /* flingMustReachMinOrMax */) |
| .flingThenSpring( |
| FloatProperties.RECT_Y, velocityY, mFlingConfigY, mSpringConfig) |
| .addUpdateListener((target, values) -> updateAction.run()) |
| .withEndActions(endAction); |
| |
| final float xEndValue = velocityX < 0 ? mMovementBounds.left : mMovementBounds.right; |
| final float estimatedFlingYEndValue = |
| PhysicsAnimator.estimateFlingEndValue(mBounds.top, velocityY, mFlingConfigY); |
| |
| setAnimatingToBounds(new Rect( |
| (int) xEndValue, |
| (int) estimatedFlingYEndValue, |
| (int) xEndValue + mBounds.width(), |
| (int) estimatedFlingYEndValue + mBounds.height())); |
| |
| startBoundsAnimation(); |
| } |
| |
| /** |
| * Animates the PiP to the closest snap target. |
| */ |
| void animateToClosestSnapTarget() { |
| final Rect newBounds = new Rect(); |
| mSnapAlgorithm.snapRectToClosestEdge(mBounds, mMovementBounds, newBounds); |
| animateToBounds(newBounds, mSpringConfig); |
| } |
| |
| /** |
| * Animates PIP to the provided bounds, using physics animations and the given spring |
| * configuration |
| */ |
| void animateToBounds(Rect bounds, PhysicsAnimator.SpringConfig springConfig) { |
| mAnimatedBounds.set(mBounds); |
| mAnimatedBoundsPhysicsAnimator |
| .spring(FloatProperties.RECT_X, bounds.left, springConfig) |
| .spring(FloatProperties.RECT_Y, bounds.top, springConfig); |
| startBoundsAnimation(); |
| |
| setAnimatingToBounds(bounds); |
| } |
| |
| /** |
| * Animates the dismissal of the PiP off the edge of the screen. |
| */ |
| void animateDismiss(float velocityX, float velocityY, @Nullable Runnable updateAction) { |
| final float velocity = PointF.length(velocityX, velocityY); |
| final boolean isFling = velocity > mFlingAnimationUtils.getMinVelocityPxPerSecond(); |
| final Point dismissEndPoint = getDismissEndPoint(mBounds, velocityX, velocityY, isFling); |
| |
| mAnimatedBounds.set(mBounds); |
| |
| // Animate to the dismiss end point, and then dismiss PIP. |
| mAnimatedBoundsPhysicsAnimator |
| .spring(FloatProperties.RECT_X, dismissEndPoint.x, velocityX, mSpringConfig) |
| .spring(FloatProperties.RECT_Y, dismissEndPoint.y, velocityY, mSpringConfig) |
| .withEndActions(this::dismissPip); |
| |
| // If we were provided with an update action, run it whenever there's an update. |
| if (updateAction != null) { |
| mAnimatedBoundsPhysicsAnimator.addUpdateListener( |
| (target, values) -> updateAction.run()); |
| } |
| |
| startBoundsAnimation(); |
| } |
| |
| /** |
| * Animates the PiP to the expanded state to show the menu. |
| */ |
| float animateToExpandedState(Rect expandedBounds, Rect movementBounds, |
| Rect expandedMovementBounds) { |
| float savedSnapFraction = mSnapAlgorithm.getSnapFraction(new Rect(mBounds), movementBounds); |
| mSnapAlgorithm.applySnapFraction(expandedBounds, expandedMovementBounds, savedSnapFraction); |
| resizeAndAnimatePipUnchecked(expandedBounds, EXPAND_STACK_TO_MENU_DURATION); |
| return savedSnapFraction; |
| } |
| |
| /** |
| * Animates the PiP from the expanded state to the normal state after the menu is hidden. |
| */ |
| void animateToUnexpandedState(Rect normalBounds, float savedSnapFraction, |
| Rect normalMovementBounds, Rect currentMovementBounds, boolean immediate) { |
| if (savedSnapFraction < 0f) { |
| // If there are no saved snap fractions, then just use the current bounds |
| savedSnapFraction = mSnapAlgorithm.getSnapFraction(new Rect(mBounds), |
| currentMovementBounds); |
| } |
| mSnapAlgorithm.applySnapFraction(normalBounds, normalMovementBounds, savedSnapFraction); |
| |
| if (immediate) { |
| movePip(normalBounds); |
| } else { |
| resizeAndAnimatePipUnchecked(normalBounds, SHRINK_STACK_FROM_MENU_DURATION); |
| } |
| } |
| |
| /** |
| * Animates the PiP to offset it from the IME or shelf. |
| */ |
| void animateToOffset(Rect originalBounds, int offset) { |
| if (DEBUG) { |
| Log.d(TAG, "animateToOffset: originalBounds=" + originalBounds + " offset=" + offset |
| + " callers=\n" + Debug.getCallers(5, " ")); |
| } |
| cancelAnimations(); |
| mPipTaskOrganizer.scheduleOffsetPip(originalBounds, offset, SHIFT_DURATION, |
| mUpdateBoundsCallback); |
| } |
| |
| /** |
| * Cancels all existing animations. |
| */ |
| private void cancelAnimations() { |
| mAnimatedBoundsPhysicsAnimator.cancel(); |
| mAnimatingToBounds.setEmpty(); |
| } |
| |
| /** Set new fling configs whose min/max values respect the given movement bounds. */ |
| private void rebuildFlingConfigs() { |
| mFlingConfigX = new PhysicsAnimator.FlingConfig( |
| DEFAULT_FRICTION, mMovementBounds.left, mMovementBounds.right); |
| mFlingConfigY = new PhysicsAnimator.FlingConfig( |
| DEFAULT_FRICTION, mMovementBounds.top, mMovementBounds.bottom); |
| } |
| |
| /** |
| * Starts the physics animator which will update the animated PIP bounds using physics |
| * animations, as well as the TimeAnimator which will apply those bounds to PIP. |
| * |
| * This will also add end actions to the bounds animator that cancel the TimeAnimator and update |
| * the 'real' bounds to equal the final animated bounds. |
| */ |
| private void startBoundsAnimation() { |
| cancelAnimations(); |
| |
| mAnimatedBoundsPhysicsAnimator |
| .withEndActions(() -> mPipTaskOrganizer.scheduleFinishResizePip(mAnimatedBounds)) |
| .addUpdateListener(mResizePipUpdateListener) |
| .start(); |
| } |
| |
| /** |
| * Notifies the floating coordinator that we're moving, and sets {@link #mAnimatingToBounds} so |
| * we return these bounds from |
| * {@link FloatingContentCoordinator.FloatingContent#getFloatingBoundsOnScreen()}. |
| */ |
| private void setAnimatingToBounds(Rect bounds) { |
| mAnimatingToBounds.set(bounds); |
| mFloatingContentCoordinator.onContentMoved(this); |
| } |
| |
| /** |
| * Directly resizes the PiP to the given {@param bounds}. |
| */ |
| private void resizePipUnchecked(Rect toBounds) { |
| if (DEBUG) { |
| Log.d(TAG, "resizePipUnchecked: toBounds=" + toBounds |
| + " callers=\n" + Debug.getCallers(5, " ")); |
| } |
| if (!toBounds.equals(mBounds)) { |
| mPipTaskOrganizer.scheduleResizePip(toBounds, mUpdateBoundsCallback); |
| } |
| } |
| |
| /** |
| * Directly resizes the PiP to the given {@param bounds}. |
| */ |
| private void resizeAndAnimatePipUnchecked(Rect toBounds, int duration) { |
| if (DEBUG) { |
| Log.d(TAG, "resizeAndAnimatePipUnchecked: toBounds=" + toBounds |
| + " duration=" + duration + " callers=\n" + Debug.getCallers(5, " ")); |
| } |
| if (!toBounds.equals(mBounds)) { |
| mPipTaskOrganizer.scheduleAnimateResizePip(toBounds, duration, mUpdateBoundsCallback); |
| setAnimatingToBounds(toBounds); |
| } |
| } |
| |
| /** |
| * @return the coordinates the PIP should animate to based on the direction of velocity when |
| * dismissing. |
| */ |
| private Point getDismissEndPoint(Rect pipBounds, float velX, float velY, boolean isFling) { |
| Point displaySize = new Point(); |
| mContext.getDisplay().getRealSize(displaySize); |
| final float bottomBound = displaySize.y + pipBounds.height() * .1f; |
| if (isFling && velX != 0 && velY != 0) { |
| // Line is defined by: y = mx + b, m = slope, b = y-intercept |
| // Find the slope |
| final float slope = velY / velX; |
| // Sub in slope and PiP position to solve for y-intercept: b = y - mx |
| final float yIntercept = pipBounds.top - slope * pipBounds.left; |
| // Now find the point on this line when y = bottom bound: x = (y - b) / m |
| final float x = (bottomBound - yIntercept) / slope; |
| return new Point((int) x, (int) bottomBound); |
| } else { |
| // If it wasn't a fling the velocity on 'up' is not reliable for direction of movement, |
| // just animate downwards. |
| return new Point(pipBounds.left, (int) bottomBound); |
| } |
| } |
| |
| /** |
| * @return whether the gesture it towards the dismiss area based on the velocity when |
| * dismissing. |
| */ |
| public boolean isGestureToDismissArea(Rect pipBounds, float velX, float velY, |
| boolean isFling) { |
| Point endpoint = getDismissEndPoint(pipBounds, velX, velY, isFling); |
| // Center the point |
| endpoint.x += pipBounds.width() / 2; |
| endpoint.y += pipBounds.height() / 2; |
| |
| // The dismiss area is the middle third of the screen, half the PIP's height from the bottom |
| Point size = new Point(); |
| mContext.getDisplay().getRealSize(size); |
| final int left = size.x / 3; |
| Rect dismissArea = new Rect(left, size.y - (pipBounds.height() / 2), left * 2, |
| size.y + pipBounds.height()); |
| return dismissArea.contains(endpoint.x, endpoint.y); |
| } |
| |
| public void dump(PrintWriter pw, String prefix) { |
| final String innerPrefix = prefix + " "; |
| pw.println(prefix + TAG); |
| pw.println(innerPrefix + "mBounds=" + mBounds); |
| pw.println(innerPrefix + "mStableInsets=" + mStableInsets); |
| } |
| } |