playback: fix more queue issues

Fix more issues with the queue, such as landscape edge-to-edge not
working correctly and drag scroll events not resulting in the appbar
lifting.

app/src/main/java/org/oxycblt/auxio/playback/queue/QueueDragCallback.kt

@@ -32,9 +32,14 @@ import kotlin.math.sign
 /**
  * The Drag callback used by the queue recyclerview. Delivers updates to [PlaybackViewModel]
  * and [QueueAdapter] simultaneously.
+ * @param onItemScroll Callback for when an item begins to scroll off-screen. Argument passed
+ * is the dY value.
  * @author OxygenCobalt
  */
-class QueueDragCallback(private val playbackModel: PlaybackViewModel) : ItemTouchHelper.Callback() {
+class QueueDragCallback(
+    private val playbackModel: PlaybackViewModel,
+    private val onItemScroll: (Int) -> Unit
+) : ItemTouchHelper.Callback() {
     private lateinit var queueAdapter: QueueAdapter
     private var shouldLift = true
 
@@ -57,7 +62,7 @@ class QueueDragCallback(private val playbackModel: PlaybackViewModel) : ItemTouc
         totalSize: Int,
         msSinceStartScroll: Long
     ): Int {
-        // Fix to make QueueFragment scroll when an item is scrolled out of bounds.
+        // Fix to make QueueFragment scroll slower when an item is scrolled out of bounds.
         // Adapted from NewPipe: https://github.com/TeamNewPipe/NewPipe
         val standardSpeed = super.interpolateOutOfBoundsScroll(
             recyclerView, viewSize, viewSizeOutOfBounds, totalSize, msSinceStartScroll
@@ -71,7 +76,13 @@ class QueueDragCallback(private val playbackModel: PlaybackViewModel) : ItemTouc
             )
         )
 
-        return clampedAbsVelocity * sign(viewSizeOutOfBounds.toDouble()).toInt()
+        val result = clampedAbsVelocity * sign(viewSizeOutOfBounds.toDouble()).toInt()
+
+        recyclerView.post {
+            onItemScroll(result)
+        }
+
+        return result
     }
 
     override fun onMove(

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

@@ -24,6 +24,7 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.view.WindowInsets
+import androidx.coordinatorlayout.widget.CoordinatorLayout
 import androidx.core.view.updatePadding
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
@@ -38,10 +39,8 @@ import org.oxycblt.auxio.playback.PlaybackViewModel
 import org.oxycblt.auxio.util.isEdgeOn
 
 /**
- * A [Fragment] that contains both the user queue and the next queue, with the abielity to
+ * A [Fragment] that contains both the user queue and the next queue, with the ability to
  * edit them as well.
- * TODO: Edge can be improved here by turning off the landscape checks and simply padding the
- *  root view on the irregular landscape mode [I think]
  * @author OxygenCobalt
  */
 class QueueFragment : Fragment() {
@@ -54,7 +53,17 @@ class QueueFragment : Fragment() {
     ): View {
         val binding = FragmentQueueBinding.inflate(inflater)
 
-        val callback = QueueDragCallback(playbackModel)
+        val callback = QueueDragCallback(playbackModel) { dY ->
+            // By default, CoordinatorLayout is not aware of scroll events originating from
+            // when an item is scrolled off-screen, so we manually add a scroll event ourselves.
+            (binding.queueAppbar.layoutParams as CoordinatorLayout.LayoutParams).behavior
+                ?.onNestedPreScroll(
+                    binding.queueCoordinator, binding.queueAppbar,
+                    binding.queueRecycler, 0, dY,
+                    IntArray(2), 0
+                )
+        }
+
         val helper = ItemTouchHelper(callback)
         val queueAdapter = QueueAdapter(helper, playbackModel)
         var lastShuffle = playbackModel.isShuffling.value
@@ -101,6 +110,7 @@ class QueueFragment : Fragment() {
             if (isShuffling != lastShuffle) {
                 lastShuffle = isShuffling
 
+                binding.queueRecycler.scrollBy(0, 100)
                 binding.queueRecycler.scrollToPosition(0)
             }
         }
@@ -112,15 +122,21 @@ class QueueFragment : Fragment() {
         if (isEdgeOn()) {
             // Account for the side navigation bar if required.
             binding.root.setOnApplyWindowInsetsListener { v, insets ->
-                val right = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
-                    insets.getInsets(WindowInsets.Type.systemBars()).right
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+                    val bars = insets.getInsets(WindowInsets.Type.systemBars())
+
+                    v.updatePadding(
+                        left = bars.left,
+                        right = bars.right
+                    )
                 } else {
                     @Suppress("DEPRECATION")
-                    insets.systemWindowInsetRight
+                    v.updatePadding(
+                        left = insets.systemWindowInsetLeft,
+                        right = insets.systemWindowInsetRight
+                    )
                 }
 
-                v.updatePadding(right = right)
-
                 insets
             }
 

app/src/main/java/org/oxycblt/auxio/playback/state/PlaybackStateDatabase.kt

@@ -30,6 +30,7 @@ import org.oxycblt.auxio.util.queryAll
 /**
  * A SQLite database for managing the persistent playback state and queue.
  * Yes. I know Room exists. But that would needlessly bloat my app and has crippling bugs.
+ * TODO: Improve the boundary between this and [PlaybackStateManager]
  * @author OxygenCobalt
  */
 class PlaybackStateDatabase(context: Context) :

app/src/main/java/org/oxycblt/auxio/util/ViewUtil.kt

@@ -18,14 +18,11 @@
 
 package org.oxycblt.auxio.util
 
-import android.app.Activity
 import android.content.Context
 import android.content.res.ColorStateList
 import android.content.res.Resources
 import android.os.Build
-import android.util.DisplayMetrics
 import android.util.TypedValue
-import android.view.WindowManager
 import android.widget.ImageButton
 import android.widget.TextView
 import androidx.annotation.AttrRes
@@ -142,43 +139,3 @@ fun @receiver:AttrRes Int.resolveAttr(context: Context): Int {
  * Check if edge-to-edge is on. Really a glorified version check.
  */
 fun isEdgeOn(): Boolean = Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1
-
-/**
- * Check if we are in the "Irregular" landscape mode (e.g landscape, but nav bar is on the sides)
- * Used to disable most of edge-to-edge if that's the case, as I cant get it to work on this mode.
- * @return True if we are in the irregular landscape mode, false if not.
- */
-fun Activity.isIrregularLandscape(): Boolean {
-    return isLandscape() && !isSystemBarOnBottom(this)
-}
-
-/**
- * Check if the system bars are on the bottom.
- * @return If the system bars are on the bottom, false if no.
- */
-private fun isSystemBarOnBottom(activity: Activity): Boolean {
-    val metrics = DisplayMetrics()
-
-    var width: Int
-    var height: Int
-
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
-        activity.windowManager.currentWindowMetrics.bounds.also {
-            width = it.width()
-            height = it.height()
-        }
-    } else {
-        @Suppress("DEPRECATION")
-        activity.getSystemServiceSafe(WindowManager::class).apply {
-            defaultDisplay.getMetrics(metrics)
-
-            width = metrics.widthPixels
-            height = metrics.heightPixels
-        }
-    }
-
-    val config = activity.resources.configuration
-    val canMove = (width != height && config.smallestScreenWidthDp < 600)
-
-    return (!canMove || width < height)
-}

app/src/main/res/layout/fragment_main.xml

@@ -26,7 +26,7 @@
             android:name="org.oxycblt.auxio.playback.CompactPlaybackFragment"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:elevation="8dp"
+            android:elevation="@dimen/elevation_normal"
             android:background="?attr/colorSurface"
             tools:layout="@layout/fragment_compact_playback" />
     </LinearLayout>

app/src/main/res/layout/fragment_queue.xml

@@ -5,6 +5,7 @@
     tools:context=".playback.queue.QueueFragment">
 
     <androidx.coordinatorlayout.widget.CoordinatorLayout
+        android:id="@+id/queue_coordinator"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:animateLayoutChanges="true"
@@ -14,8 +15,8 @@
         <com.google.android.material.appbar.AppBarLayout
             android:id="@+id/queue_appbar"
             android:layout_width="match_parent"
-            android:background="?attr/colorSurface"
             android:layout_height="wrap_content"
+            android:background="?attr/colorSurface"
             app:liftOnScroll="true">
 
             <androidx.appcompat.widget.Toolbar
@@ -27,7 +28,6 @@
 
         </com.google.android.material.appbar.AppBarLayout>
 
-
         <androidx.recyclerview.widget.RecyclerView
             android:id="@+id/queue_recycler"
             android:layout_width="match_parent"

app/src/main/res/values/dimens.xml

@@ -34,6 +34,7 @@
     <!-- Misc -->
     <dimen name="elevation_small">2dp</dimen>
     <dimen name="elevation_normal">4dp</dimen>
+    <dimen name="elevation_large">8dp</dimen>
 
     <dimen name="offset_thumb">4dp</dimen>
 </resources>