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queue: rework previous items

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Rework previous items to be based off of adapter state.

This improves the transitions between active and previous items and
their overall efficiency.
This commit is contained in:
OxygenCobalt 2022-07-31 16:50:47 -06:00
parent b42dfd0b53
commit f5542c65ba
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GPG key ID: 37DBE3621FE9AD47
8 changed files with 129 additions and 87 deletions
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24
app/src/main/java/com/google/android/material/bottomsheet/NeoBottomSheetBehavior.java
View file

@ -720,7 +720,8 @@ public class NeoBottomSheetBehavior<V extends View> extends CoordinatorLayout.Be
}
} else if (dy < 0) { // Downward
if (!target.canScrollVertically(-1)) {
if (newTop <= collapsedOffset || hideable) {
// MODIFICATION: Add enableHidingGestures method
if (newTop <= collapsedOffset || (hideable && enableHidingGestures())) {
if (!draggable) {
// Prevent dragging
return;
@ -774,7 +775,8 @@ public class NeoBottomSheetBehavior<V extends View> extends CoordinatorLayout.Be
}
}
}
} else if (hideable && shouldHide(child, getYVelocity())) {
// MODIFICATION: Add enableHidingGestures method
} else if (hideable && shouldHide(child, getYVelocity()) && enableHidingGestures()) {
targetState = STATE_HIDDEN;
} else if (lastNestedScrollDy == 0) {
int currentTop = child.getTop();
@ -1723,7 +1725,8 @@ public class NeoBottomSheetBehavior<V extends View> extends CoordinatorLayout.Be
}
}
}
} else if (hideable && shouldHide(releasedChild, yvel)) {
// MODIFICATION: Add enableHidingGestures method
} else if (hideable && shouldHide(releasedChild, yvel) && enableHidingGestures()) {
// Hide if the view was either released low or it was a significant vertical swipe
// otherwise settle to closest expanded state.
if ((Math.abs(xvel) < Math.abs(yvel) && yvel > SIGNIFICANT_VEL_THRESHOLD)
@ -1795,8 +1798,9 @@ public class NeoBottomSheetBehavior<V extends View> extends CoordinatorLayout.Be
@Override
public int clampViewPositionVertical(@NonNull View child, int top, int dy) {
// MODIFICATION: Add enableHidingGestures method
return MathUtils.clamp(
top, getExpandedOffset(), hideable ? parentHeight : collapsedOffset);
top, getExpandedOffset(), (hideable && enableHidingGestures()) ? parentHeight : collapsedOffset);
}
@Override
@ -1806,7 +1810,8 @@ public class NeoBottomSheetBehavior<V extends View> extends CoordinatorLayout.Be
@Override
public int getViewVerticalDragRange(@NonNull View child) {
if (hideable) {
// MODIFICATION: Add enableHidingGestures method
if (hideable && enableHidingGestures()) {
return parentHeight;
} else {
return collapsedOffset;
@ -1876,6 +1881,15 @@ public class NeoBottomSheetBehavior<V extends View> extends CoordinatorLayout.Be
return true;
}
/**
* Checks whether hiding gestures should be enabled if {@code isHideable} is true.
* @hide
*/
@RestrictTo(LIBRARY_GROUP)
public boolean enableHidingGestures() {
return true;
}
/**
* Checks whether the bottom sheet should be expanded after it has been released after dragging.
*

3
app/src/main/java/org/oxycblt/auxio/playback/PlaybackSheetBehavior.kt
View file

@ -68,6 +68,9 @@ class PlaybackSheetBehavior<V : View>(context: Context, attributeSet: AttributeS
return success
}
// Note: This is an extension to Auxio's vendored BottomSheetBehavior
override fun enableHidingGestures() = true
fun hideSafe() {
if (state != STATE_HIDDEN) {
isDraggable = false

75
app/src/main/java/org/oxycblt/auxio/playback/queue/QueueAdapter.kt
View file

@ -29,13 +29,46 @@ import java.util.*
import org.oxycblt.auxio.IntegerTable
import org.oxycblt.auxio.R
import org.oxycblt.auxio.databinding.ItemQueueSongBinding
import org.oxycblt.auxio.music.Song
import org.oxycblt.auxio.ui.recycler.*
import org.oxycblt.auxio.util.*
class QueueAdapter(listener: QueueItemListener) :
MonoAdapter<QueueViewModel.QueueSong, QueueItemListener, QueueSongViewHolder>(listener) {
MonoAdapter<Song, QueueItemListener, QueueSongViewHolder>(listener) {
private var currentIndex = 0
override val data = SyncBackingData(this, QueueSongViewHolder.DIFFER)
override val creator = QueueSongViewHolder.CREATOR
override fun onBindViewHolder(
viewHolder: QueueSongViewHolder,
position: Int,
payload: List<Any>
) {
if (payload.isEmpty()) {
super.onBindViewHolder(viewHolder, position, payload)
}
viewHolder.isPrevious = position <= currentIndex
}
fun updateIndex(index: Int) {
when {
index < currentIndex -> {
val lastIndex = currentIndex
currentIndex = index
notifyItemRangeChanged(0, lastIndex + 1, PAYLOAD_UPDATE_INDEX)
}
index > currentIndex -> {
currentIndex = index
notifyItemRangeChanged(0, currentIndex + 1, PAYLOAD_UPDATE_INDEX)
}
}
}
companion object {
val PAYLOAD_UPDATE_INDEX = Any()
}
}
interface QueueItemListener {
@ -46,7 +79,7 @@ interface QueueItemListener {
class QueueSongViewHolder
private constructor(
private val binding: ItemQueueSongBinding,
) : BindingViewHolder<QueueViewModel.QueueSong, QueueItemListener>(binding.root) {
) : BindingViewHolder<Song, QueueItemListener>(binding.root) {
val bodyView: View
get() = binding.body
val backgroundView: View
@ -58,8 +91,15 @@ private constructor(
elevation = binding.context.getDimenSafe(R.dimen.elevation_normal) * 5
}
val isPrevious: Boolean
var isPrevious: Boolean
get() = binding.songDragHandle.alpha == 0.5f
set(value) {
val alpha = if (value) 0.5f else 1f
binding.songAlbumCover.alpha = alpha
binding.songName.alpha = alpha
binding.songInfo.alpha = alpha
binding.songDragHandle.alpha = alpha
}
init {
binding.body.background =
@ -75,10 +115,10 @@ private constructor(
}
@SuppressLint("ClickableViewAccessibility")
override fun bind(item: QueueViewModel.QueueSong, listener: QueueItemListener) {
binding.songAlbumCover.bind(item.song)
binding.songName.textSafe = item.song.resolveName(binding.context)
binding.songInfo.textSafe = item.song.resolveIndividualArtistName(binding.context)
override fun bind(item: Song, listener: QueueItemListener) {
binding.songAlbumCover.bind(item)
binding.songName.textSafe = item.resolveName(binding.context)
binding.songInfo.textSafe = item.resolveIndividualArtistName(binding.context)
binding.background.isInvisible = true
@ -87,12 +127,6 @@ private constructor(
binding.body.setOnClickListener { listener.onClick(this) }
val alpha = if (item.previous) 0.5f else 1f
binding.songAlbumCover.alpha = alpha
binding.songName.alpha = alpha
binding.songInfo.alpha = alpha
binding.songDragHandle.alpha = alpha
// Roll our own drag handlers as the default ones suck
binding.songDragHandle.setOnTouchListener { _, motionEvent ->
binding.songDragHandle.performClick()
@ -113,19 +147,6 @@ private constructor(
QueueSongViewHolder(ItemQueueSongBinding.inflate(context.inflater))
}
val DIFFER =
object : SimpleItemCallback<QueueViewModel.QueueSong>() {
override fun areContentsTheSame(
oldItem: QueueViewModel.QueueSong,
newItem: QueueViewModel.QueueSong
) =
super.areContentsTheSame(oldItem, newItem) &&
oldItem.previous == newItem.previous
override fun areItemsTheSame(
oldItem: QueueViewModel.QueueSong,
newItem: QueueViewModel.QueueSong
) = oldItem.song == newItem.song && oldItem.previous == newItem.previous
}
val DIFFER = SongViewHolder.DIFFER
}
}

30
app/src/main/java/org/oxycblt/auxio/playback/queue/QueueFragment.kt
View file

@ -25,10 +25,11 @@ import androidx.fragment.app.activityViewModels
import androidx.recyclerview.widget.ItemTouchHelper
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import java.util.*
import org.oxycblt.auxio.databinding.FragmentQueueBinding
import org.oxycblt.auxio.music.Song
import org.oxycblt.auxio.ui.fragment.ViewBindingFragment
import org.oxycblt.auxio.util.collectImmediately
import org.oxycblt.auxio.util.logD
/**
* A [Fragment] that shows the queue and enables editing as well.
@ -66,7 +67,7 @@ class QueueFragment : ViewBindingFragment<FragmentQueueBinding>(), QueueItemList
// --- VIEWMODEL SETUP ----
collectImmediately(queueModel.queue, ::updateQueue)
collectImmediately(queueModel.queue, queueModel.index, ::updateQueue)
}
override fun onDestroyBinding(binding: FragmentQueueBinding) {
@ -82,16 +83,20 @@ class QueueFragment : ViewBindingFragment<FragmentQueueBinding>(), QueueItemList
touchHelper.startDrag(viewHolder)
}
private fun updateQueue(queue: List<QueueViewModel.QueueSong>) {
val instructions = queueModel.instructions
if (instructions != null) {
if (instructions.replace) {
private fun updateQueue(queue: List<Song>, index: Int) {
val replaceQueue = queueModel.replaceQueue
if (replaceQueue == true) {
logD("Replacing queue")
queueAdapter.data.replaceList(queue)
} else {
logD("Diffing queue")
queueAdapter.data.submitList(queue)
}
if (instructions.scrollTo != null) {
queueModel.finishReplace()
val scrollTo = queueModel.scrollTo
if (scrollTo != null) {
val binding = requireBinding()
val lmm = binding.queueRecycler.layoutManager as LinearLayoutManager
val start = lmm.findFirstCompletelyVisibleItemPosition()
@ -99,14 +104,13 @@ class QueueFragment : ViewBindingFragment<FragmentQueueBinding>(), QueueItemList
if (start != RecyclerView.NO_POSITION &&
end != RecyclerView.NO_POSITION &&
instructions.scrollTo !in start..end) {
binding.queueRecycler.scrollToPosition(instructions.scrollTo)
scrollTo !in start..end) {
binding.queueRecycler.scrollToPosition(scrollTo)
}
}
queueModel.finishInstructions()
} else {
queueAdapter.data.submitList(queue)
}
queueModel.finishScrollTo()
queueAdapter.updateIndex(index)
}
}

1
app/src/main/java/org/oxycblt/auxio/playback/queue/QueueSheetBehavior.kt
View file

@ -33,6 +33,7 @@ class QueueSheetBehavior<V : View>(context: Context, attributeSet: AttributeSet?
private var barSpacing = context.getDimenSizeSafe(R.dimen.spacing_small)
init {
isHideable = false
sheetBackgroundDrawable.setCornerSize(context.getDimenSafe(R.dimen.size_corners_medium))
}

53
app/src/main/java/org/oxycblt/auxio/playback/queue/QueueViewModel.kt
View file

@ -24,21 +24,19 @@ import kotlinx.coroutines.flow.StateFlow
import org.oxycblt.auxio.music.MusicParent
import org.oxycblt.auxio.music.Song
import org.oxycblt.auxio.playback.state.PlaybackStateManager
import org.oxycblt.auxio.ui.recycler.Item
class QueueViewModel : ViewModel(), PlaybackStateManager.Callback {
private val playbackManager = PlaybackStateManager.getInstance()
data class QueueSong(val song: Song, val previous: Boolean) : Item() {
override val id: Long
get() = song.id
}
private val _queue = MutableStateFlow(listOf<Song>())
val queue: StateFlow<List<Song>> = _queue
private val _queue = MutableStateFlow(listOf<QueueSong>())
val queue: StateFlow<List<QueueSong>> = _queue
private val _index = MutableStateFlow(playbackManager.index)
val index: StateFlow<Int>
get() = _index
data class QueueInstructions(val replace: Boolean, val scrollTo: Int?)
var instructions: QueueInstructions? = null
var replaceQueue: Boolean? = null
var scrollTo: Int? = null
init {
playbackManager.addCallback(this)
@ -76,35 +74,38 @@ class QueueViewModel : ViewModel(), PlaybackStateManager.Callback {
return true
}
fun finishInstructions() {
instructions = null
fun finishReplace() {
replaceQueue = null
}
fun finishScrollTo() {
scrollTo = null
}
override fun onIndexMoved(index: Int) {
instructions = QueueInstructions(false, min(index + 1, playbackManager.queue.lastIndex))
_queue.value = generateQueue(index, playbackManager.queue)
replaceQueue = null
scrollTo = min(index + 1, playbackManager.queue.lastIndex)
_index.value = index
}
override fun onQueueChanged(queue: List<Song>) {
instructions = QueueInstructions(false, null)
_queue.value = generateQueue(playbackManager.index, queue)
replaceQueue = false
scrollTo = null
_queue.value = playbackManager.queue.toMutableList()
}
override fun onQueueReworked(index: Int, queue: List<Song>) {
instructions = QueueInstructions(true, min(index + 1, playbackManager.queue.lastIndex))
_queue.value = generateQueue(index, queue)
replaceQueue = true
scrollTo = min(index + 1, playbackManager.queue.lastIndex)
_queue.value = playbackManager.queue.toMutableList()
_index.value = index
}
override fun onNewPlayback(index: Int, queue: List<Song>, parent: MusicParent?) {
instructions = QueueInstructions(true, min(index + 1, playbackManager.queue.lastIndex))
_queue.value = generateQueue(index, queue)
}
private fun generateQueue(index: Int, queue: List<Song>): List<QueueSong> {
val before = queue.slice(0..index).map { QueueSong(it, true) }
val after =
queue.slice(index + 1..playbackManager.queue.lastIndex).map { QueueSong(it, false) }
return before + after
replaceQueue = true
scrollTo = min(index + 1, playbackManager.queue.lastIndex)
_queue.value = playbackManager.queue.toMutableList()
_index.value = index
}
override fun onCleared() {

3
app/src/main/res/layout-w600dp-land/fragment_playback_panel.xml
View file

@ -38,8 +38,7 @@
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/playback_cover"
app:layout_constraintTop_toBottomOf="@+id/playback_toolbar"
app:layout_constraintVertical_chainStyle="packed"
app:trackColorInactive="@color/sel_track">
app:layout_constraintVertical_chainStyle="packed">
<TextView
android:id="@+id/playback_song"

3
app/src/main/res/layout/fragment_home.xml
View file

@ -87,8 +87,7 @@
android:indeterminate="true"
app:indeterminateAnimationType="disjoint"
app:layout_constraintBottom_toBottomOf="@+id/home_indexing_action"
app:layout_constraintTop_toTopOf="@+id/home_indexing_action"
app:trackColor="@color/sel_track" />
app:layout_constraintTop_toTopOf="@+id/home_indexing_action" />
<Button
android:id="@+id/home_indexing_action"