| package com.android.systemui.media |
| |
| import android.content.Context |
| import android.graphics.Color |
| import android.view.LayoutInflater |
| import android.view.GestureDetector |
| import android.view.MotionEvent |
| import android.view.View |
| import android.view.ViewGroup |
| import android.widget.HorizontalScrollView |
| import android.widget.LinearLayout |
| import androidx.core.view.GestureDetectorCompat |
| import com.android.systemui.R |
| import com.android.systemui.dagger.qualifiers.Background |
| import com.android.systemui.dagger.qualifiers.Main |
| import com.android.systemui.plugins.ActivityStarter |
| import com.android.systemui.qs.PageIndicator |
| import com.android.systemui.statusbar.notification.VisualStabilityManager |
| import com.android.systemui.util.animation.UniqueObjectHostView |
| import com.android.systemui.util.animation.requiresRemeasuring |
| import com.android.systemui.util.concurrency.DelayableExecutor |
| import java.util.concurrent.Executor |
| import javax.inject.Inject |
| import javax.inject.Singleton |
| |
| private const val FLING_SLOP = 1000000 |
| |
| /** |
| * Class that is responsible for keeping the view carousel up to date. |
| * This also handles changes in state and applies them to the media carousel like the expansion. |
| */ |
| @Singleton |
| class MediaViewManager @Inject constructor( |
| private val context: Context, |
| @Main private val foregroundExecutor: Executor, |
| @Background private val backgroundExecutor: DelayableExecutor, |
| private val visualStabilityManager: VisualStabilityManager, |
| private val activityStarter: ActivityStarter, |
| private val mediaHostStatesManager: MediaHostStatesManager, |
| mediaManager: MediaDataCombineLatest |
| ) { |
| |
| /** |
| * The desired location where we'll be at the end of the transformation. Usually this matches |
| * the end location, except when we're still waiting on a state update call. |
| */ |
| @MediaLocation |
| private var desiredLocation: Int = -1 |
| |
| /** |
| * The ending location of the view where it ends when all animations and transitions have |
| * finished |
| */ |
| @MediaLocation |
| private var currentEndLocation: Int = -1 |
| |
| /** |
| * The ending location of the view where it ends when all animations and transitions have |
| * finished |
| */ |
| @MediaLocation |
| private var currentStartLocation: Int = -1 |
| |
| /** |
| * The progress of the transition or 1.0 if there is no transition happening |
| */ |
| private var currentTransitionProgress: Float = 1.0f |
| |
| /** |
| * The measured width of the carousel |
| */ |
| private var carouselMeasureWidth: Int = 0 |
| |
| /** |
| * The measured height of the carousel |
| */ |
| private var carouselMeasureHeight: Int = 0 |
| private var playerWidthPlusPadding: Int = 0 |
| private var desiredHostState: MediaHostState? = null |
| private val mediaCarousel: HorizontalScrollView |
| val mediaFrame: ViewGroup |
| val mediaPlayers: MutableMap<String, MediaControlPanel> = mutableMapOf() |
| private val mediaContent: ViewGroup |
| private val pageIndicator: PageIndicator |
| private val gestureDetector: GestureDetectorCompat |
| private val visualStabilityCallback: VisualStabilityManager.Callback |
| private var activeMediaIndex: Int = 0 |
| private var needsReordering: Boolean = false |
| private var scrollIntoCurrentMedia: Int = 0 |
| private var currentlyExpanded = true |
| set(value) { |
| if (field != value) { |
| field = value |
| for (player in mediaPlayers.values) { |
| player.setListening(field) |
| } |
| } |
| } |
| private val scrollChangedListener = object : View.OnScrollChangeListener { |
| override fun onScrollChange( |
| v: View?, |
| scrollX: Int, |
| scrollY: Int, |
| oldScrollX: Int, |
| oldScrollY: Int |
| ) { |
| if (playerWidthPlusPadding == 0) { |
| return |
| } |
| onMediaScrollingChanged(scrollX / playerWidthPlusPadding, |
| scrollX % playerWidthPlusPadding) |
| } |
| } |
| private val gestureListener = object : GestureDetector.SimpleOnGestureListener() { |
| override fun onFling( |
| eStart: MotionEvent?, |
| eCurrent: MotionEvent?, |
| vX: Float, |
| vY: Float |
| ): Boolean { |
| return this@MediaViewManager.onFling(eStart, eCurrent, vX, vY) |
| } |
| } |
| private val touchListener = object : View.OnTouchListener { |
| override fun onTouch(view: View, motionEvent: MotionEvent?): Boolean { |
| return this@MediaViewManager.onTouch(view, motionEvent) |
| } |
| } |
| |
| init { |
| gestureDetector = GestureDetectorCompat(context, gestureListener) |
| mediaFrame = inflateMediaCarousel() |
| mediaCarousel = mediaFrame.requireViewById(R.id.media_carousel_scroller) |
| pageIndicator = mediaFrame.requireViewById(R.id.media_page_indicator) |
| mediaCarousel.setOnScrollChangeListener(scrollChangedListener) |
| mediaCarousel.setOnTouchListener(touchListener) |
| mediaCarousel.setOverScrollMode(View.OVER_SCROLL_NEVER) |
| mediaContent = mediaCarousel.requireViewById(R.id.media_carousel) |
| visualStabilityCallback = VisualStabilityManager.Callback { |
| if (needsReordering) { |
| needsReordering = false |
| reorderAllPlayers() |
| } |
| // Let's reset our scroll position |
| mediaCarousel.scrollX = 0 |
| } |
| visualStabilityManager.addReorderingAllowedCallback(visualStabilityCallback, |
| true /* persistent */) |
| mediaManager.addListener(object : MediaDataManager.Listener { |
| override fun onMediaDataLoaded(key: String, data: MediaData) { |
| updateView(key, data) |
| updatePlayerVisibilities() |
| mediaCarousel.requiresRemeasuring = true |
| } |
| |
| override fun onMediaDataRemoved(key: String) { |
| val removed = mediaPlayers.remove(key) |
| removed?.apply { |
| val beforeActive = mediaContent.indexOfChild(removed.view?.player) <= |
| activeMediaIndex |
| mediaContent.removeView(removed.view?.player) |
| removed.onDestroy() |
| updateMediaPaddings() |
| if (beforeActive) { |
| // also update the index here since the scroll below might not always lead |
| // to a scrolling changed |
| activeMediaIndex = Math.max(0, activeMediaIndex - 1) |
| mediaCarousel.scrollX = Math.max(mediaCarousel.scrollX - |
| playerWidthPlusPadding, 0) |
| } |
| updatePlayerVisibilities() |
| updatePageIndicator() |
| } |
| } |
| }) |
| mediaHostStatesManager.addCallback(object : MediaHostStatesManager.Callback { |
| override fun onHostStateChanged(location: Int, mediaHostState: MediaHostState) { |
| if (location == desiredLocation) { |
| onDesiredLocationChanged(desiredLocation, mediaHostState, animate = false) |
| } |
| } |
| }) |
| } |
| |
| private fun inflateMediaCarousel(): ViewGroup { |
| return LayoutInflater.from(context).inflate(R.layout.media_carousel, |
| UniqueObjectHostView(context), false) as ViewGroup |
| } |
| |
| private fun reorderAllPlayers() { |
| for (mediaPlayer in mediaPlayers.values) { |
| val view = mediaPlayer.view?.player |
| if (mediaPlayer.isPlaying && mediaContent.indexOfChild(view) != 0) { |
| mediaContent.removeView(view) |
| mediaContent.addView(view, 0) |
| } |
| } |
| updateMediaPaddings() |
| updatePlayerVisibilities() |
| } |
| |
| private fun onMediaScrollingChanged(newIndex: Int, scrollInAmount: Int) { |
| val wasScrolledIn = scrollIntoCurrentMedia != 0 |
| scrollIntoCurrentMedia = scrollInAmount |
| val nowScrolledIn = scrollIntoCurrentMedia != 0 |
| if (newIndex != activeMediaIndex || wasScrolledIn != nowScrolledIn) { |
| activeMediaIndex = newIndex |
| updatePlayerVisibilities() |
| } |
| val location = activeMediaIndex.toFloat() + if (playerWidthPlusPadding > 0) |
| scrollInAmount.toFloat() / playerWidthPlusPadding else 0f |
| pageIndicator.setLocation(location) |
| } |
| |
| private fun onTouch(view: View, motionEvent: MotionEvent?): Boolean { |
| if (gestureDetector.onTouchEvent(motionEvent)) { |
| return true |
| } |
| if (motionEvent?.getAction() == MotionEvent.ACTION_UP) { |
| val pos = mediaCarousel.scrollX % playerWidthPlusPadding |
| if (pos > playerWidthPlusPadding / 2) { |
| mediaCarousel.smoothScrollBy(playerWidthPlusPadding - pos, 0) |
| } else { |
| mediaCarousel.smoothScrollBy(-1 * pos, 0) |
| } |
| return true |
| } |
| return view.onTouchEvent(motionEvent) |
| } |
| |
| private fun onFling( |
| eStart: MotionEvent?, |
| eCurrent: MotionEvent?, |
| vX: Float, |
| vY: Float |
| ): Boolean { |
| if (vX * vX < 0.5 * vY * vY) { |
| return false |
| } |
| if (vX * vX < FLING_SLOP) { |
| return false |
| } |
| val pos = mediaCarousel.scrollX |
| val currentIndex = if (playerWidthPlusPadding > 0) pos / playerWidthPlusPadding else 0 |
| var destIndex = if (vX <= 0) currentIndex + 1 else currentIndex |
| destIndex = Math.max(0, destIndex) |
| destIndex = Math.min(mediaContent.getChildCount() - 1, destIndex) |
| val view = mediaContent.getChildAt(destIndex) |
| mediaCarousel.smoothScrollTo(view.left, mediaCarousel.scrollY) |
| return true |
| } |
| |
| private fun updatePlayerVisibilities() { |
| val scrolledIn = scrollIntoCurrentMedia != 0 |
| for (i in 0 until mediaContent.childCount) { |
| val view = mediaContent.getChildAt(i) |
| val visible = (i == activeMediaIndex) || ((i == (activeMediaIndex + 1)) && scrolledIn) |
| view.visibility = if (visible) View.VISIBLE else View.INVISIBLE |
| } |
| } |
| |
| private fun updateView(key: String, data: MediaData) { |
| var existingPlayer = mediaPlayers[key] |
| if (existingPlayer == null) { |
| existingPlayer = MediaControlPanel(context, foregroundExecutor, backgroundExecutor, |
| activityStarter, mediaHostStatesManager) |
| existingPlayer.attach(PlayerViewHolder.create(LayoutInflater.from(context), |
| mediaContent)) |
| mediaPlayers[key] = existingPlayer |
| val lp = LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, |
| ViewGroup.LayoutParams.WRAP_CONTENT) |
| existingPlayer.view?.player?.setLayoutParams(lp) |
| existingPlayer.setListening(currentlyExpanded) |
| updatePlayerToState(existingPlayer, noAnimation = true) |
| if (existingPlayer.isPlaying) { |
| mediaContent.addView(existingPlayer.view?.player, 0) |
| } else { |
| mediaContent.addView(existingPlayer.view?.player) |
| } |
| } else if (existingPlayer.isPlaying && |
| mediaContent.indexOfChild(existingPlayer.view?.player) != 0) { |
| if (visualStabilityManager.isReorderingAllowed) { |
| mediaContent.removeView(existingPlayer.view?.player) |
| mediaContent.addView(existingPlayer.view?.player, 0) |
| } else { |
| needsReordering = true |
| } |
| } |
| existingPlayer.bind(data) |
| updateMediaPaddings() |
| updatePageIndicator() |
| } |
| |
| private fun updateMediaPaddings() { |
| val padding = context.resources.getDimensionPixelSize(R.dimen.qs_media_padding) |
| val childCount = mediaContent.childCount |
| for (i in 0 until childCount) { |
| val mediaView = mediaContent.getChildAt(i) |
| val desiredPaddingEnd = if (i == childCount - 1) 0 else padding |
| val layoutParams = mediaView.layoutParams as ViewGroup.MarginLayoutParams |
| if (layoutParams.marginEnd != desiredPaddingEnd) { |
| layoutParams.marginEnd = desiredPaddingEnd |
| mediaView.layoutParams = layoutParams |
| } |
| } |
| } |
| |
| private fun updatePageIndicator() { |
| val numPages = mediaContent.getChildCount() |
| pageIndicator.setNumPages(numPages, Color.WHITE) |
| if (numPages == 1) { |
| pageIndicator.setLocation(0f) |
| } |
| } |
| |
| /** |
| * Set a new interpolated state for all players. This is a state that is usually controlled |
| * by a finger movement where the user drags from one state to the next. |
| */ |
| fun setCurrentState( |
| @MediaLocation startLocation: Int, |
| @MediaLocation endLocation: Int, |
| progress: Float, |
| immediately: Boolean |
| ) { |
| // Hack: Since the indicator doesn't move with the player expansion, just make it disappear |
| // and then reappear at the end. |
| pageIndicator.alpha = if (progress == 1f || progress == 0f) 1f else 0f |
| if (startLocation != currentStartLocation || |
| endLocation != currentEndLocation || |
| progress != currentTransitionProgress || |
| immediately |
| ) { |
| currentStartLocation = startLocation |
| currentEndLocation = endLocation |
| currentTransitionProgress = progress |
| for (mediaPlayer in mediaPlayers.values) { |
| updatePlayerToState(mediaPlayer, immediately) |
| } |
| } |
| } |
| |
| private fun updatePlayerToState(mediaPlayer: MediaControlPanel, noAnimation: Boolean) { |
| mediaPlayer.mediaViewController.setCurrentState( |
| startLocation = currentStartLocation, |
| endLocation = currentEndLocation, |
| transitionProgress = currentTransitionProgress, |
| applyImmediately = noAnimation) |
| } |
| |
| /** |
| * The desired location of this view has changed. We should remeasure the view to match |
| * the new bounds and kick off bounds animations if necessary. |
| * If an animation is happening, an animation is kicked of externally, which sets a new |
| * current state until we reach the targetState. |
| * |
| * @param desiredLocation the location we're going to |
| * @param desiredHostState the target state we're transitioning to |
| * @param animate should this be animated |
| */ |
| fun onDesiredLocationChanged( |
| desiredLocation: Int, |
| desiredHostState: MediaHostState?, |
| animate: Boolean, |
| duration: Long = 200, |
| startDelay: Long = 0 |
| ) { |
| desiredHostState?.let { |
| // This is a hosting view, let's remeasure our players |
| this.desiredLocation = desiredLocation |
| this.desiredHostState = it |
| currentlyExpanded = it.expansion > 0 |
| for (mediaPlayer in mediaPlayers.values) { |
| if (animate) { |
| mediaPlayer.mediaViewController.animatePendingStateChange( |
| duration = duration, |
| delay = startDelay) |
| } |
| mediaPlayer.mediaViewController.onLocationPreChange(desiredLocation) |
| } |
| updateCarouselSize() |
| } |
| } |
| |
| /** |
| * Update the size of the carousel, remeasuring it if necessary. |
| */ |
| private fun updateCarouselSize() { |
| val width = desiredHostState?.measurementInput?.width ?: 0 |
| val height = desiredHostState?.measurementInput?.height ?: 0 |
| if (width != carouselMeasureWidth && width != 0 || |
| height != carouselMeasureWidth && height != 0) { |
| carouselMeasureWidth = width |
| carouselMeasureHeight = height |
| playerWidthPlusPadding = carouselMeasureWidth + context.resources.getDimensionPixelSize( |
| R.dimen.qs_media_padding) |
| // The player width has changed, let's update the scroll position to make sure |
| // it's still at the same place |
| var newScroll = activeMediaIndex * playerWidthPlusPadding |
| if (scrollIntoCurrentMedia > playerWidthPlusPadding) { |
| newScroll += playerWidthPlusPadding - |
| (scrollIntoCurrentMedia - playerWidthPlusPadding) |
| } else { |
| newScroll += scrollIntoCurrentMedia |
| } |
| mediaCarousel.scrollX = newScroll |
| // Let's remeasure the carousel |
| val widthSpec = desiredHostState?.measurementInput?.widthMeasureSpec ?: 0 |
| val heightSpec = desiredHostState?.measurementInput?.heightMeasureSpec ?: 0 |
| mediaCarousel.measure(widthSpec, heightSpec) |
| mediaCarousel.layout(0, 0, width, mediaCarousel.measuredHeight) |
| } |
| } |
| } |