Merge branch 'ImproveCurrentPlayingUI' into 'develop'

Draft: improve feedback of currentPlayingLayout

See merge request ultrasonic/ultrasonic!1047

ultrasonic/src/main/kotlin/org/moire/ultrasonic/activity/NavigationActivity.kt

@@ -73,6 +73,7 @@ import org.moire.ultrasonic.util.ShortcutUtil
 import org.moire.ultrasonic.util.Storage
 import org.moire.ultrasonic.util.UncaughtExceptionHandler
 import org.moire.ultrasonic.util.Util
+import org.moire.ultrasonic.util.Util.ifNotNull
 import timber.log.Timber
 
 /**
@@ -179,11 +180,7 @@ class NavigationActivity : AppCompatActivity() {
 
             currentFragmentId = destination.id
             // Handle the hiding of the NowPlaying fragment when the Player is active
-            if (currentFragmentId == R.id.playerFragment) {
-                hideNowPlaying()
-            } else {
-                if (!nowPlayingHidden) showNowPlaying()
-            }
+            computeNowPlayingVisibility()
         }
 
         // Determine if this is a first run
@@ -199,15 +196,16 @@ class NavigationActivity : AppCompatActivity() {
         Util.ensurePermissionToPostNotification(this)
 
         rxBusSubscription += RxBus.dismissNowPlayingCommandObservable.subscribe {
-            nowPlayingHidden = true
-            hideNowPlaying()
+            computeNowPlayingVisibility(false)
         }
 
         rxBusSubscription += RxBus.playerStateObservable.subscribe {
-            if (it.state == STATE_READY)
-                showNowPlaying()
-            else
-                hideNowPlaying()
+            // If state is ready then nowPlaying will be visible again
+            if (it.state == STATE_READY) {
+                computeNowPlayingVisibility(true)
+            } else {
+                computeNowPlayingVisibility()
+            }
         }
 
         rxBusSubscription += RxBus.themeChangedEventObservable.subscribe {
@@ -314,8 +312,7 @@ class NavigationActivity : AppCompatActivity() {
         // Lifecycle support's constructor registers some event receivers so it should be created early
         lifecycleSupport.onCreate()
 
-        if (!nowPlayingHidden) showNowPlaying()
-        else hideNowPlaying()
+        computeNowPlayingVisibility()
     }
 
     /*
@@ -555,9 +552,14 @@ class NavigationActivity : AppCompatActivity() {
         }
     }
 
-    private fun showNowPlaying() {
+    private fun computeNowPlayingVisibility(forceNewVisibility: Boolean? = null) {
+        forceNewVisibility.ifNotNull { nowPlayingHidden = !it }
         if (!Settings.showNowPlaying) {
-            hideNowPlaying()
+            nowPlayingView?.visibility = View.GONE
+            return
+        }
+        if (nowPlayingHidden) {
+            nowPlayingView?.visibility = View.GONE
             return
         }
 
@@ -566,7 +568,7 @@ class NavigationActivity : AppCompatActivity() {
         nowPlayingHidden = false
         // Do not show for Player fragment
         if (currentFragmentId == R.id.playerFragment) {
-            hideNowPlaying()
+            nowPlayingView?.visibility = View.GONE
             return
         }
 
@@ -578,15 +580,11 @@ class NavigationActivity : AppCompatActivity() {
                     nowPlayingView?.visibility = View.VISIBLE
                 }
             } else {
-                hideNowPlaying()
+                nowPlayingView?.visibility = View.GONE
             }
         }
     }
 
-    private fun hideNowPlaying() {
-        nowPlayingView?.visibility = View.GONE
-    }
-
     private fun setMenuForServerCapabilities() {
         val isOnline = !ActiveServerProvider.isOffline()
         val activeServer = activeServerProvider.getActiveServer()

ultrasonic/src/main/kotlin/org/moire/ultrasonic/fragment/NowPlayingFragment.kt

@@ -10,18 +10,19 @@ package org.moire.ultrasonic.fragment
 import android.annotation.SuppressLint
 import android.os.Bundle
 import android.view.LayoutInflater
-import android.view.MotionEvent
 import android.view.View
 import android.view.ViewGroup
 import android.widget.ImageView
 import android.widget.TextView
 import androidx.fragment.app.Fragment
+import androidx.media3.common.MediaItem
+import androidx.media3.common.Player
 import androidx.navigation.Navigation
 import androidx.navigation.fragment.findNavController
+import androidx.viewpager2.adapter.FragmentStateAdapter
+import androidx.viewpager2.widget.ViewPager2
 import com.google.android.material.button.MaterialButton
 import io.reactivex.rxjava3.disposables.Disposable
-import java.lang.Exception
-import kotlin.math.abs
 import org.koin.android.ext.android.inject
 import org.moire.ultrasonic.NavigationGraphDirections
 import org.moire.ultrasonic.R
@@ -38,9 +39,88 @@ import timber.log.Timber
  * Contains the mini-now playing information box displayed at the bottom of the screen
  */
 class NowPlayingFragment : Fragment() {
+    private var isInitialized = false
+    private lateinit var nowPlayingCollectionAdapter: NowPlayingCollectionAdapter
+    private lateinit var viewPager: ViewPager2
+    private var rxBusSubscription: Disposable? = null
 
-    private var downX = 0f
-    private var downY = 0f
+    private val mediaPlayerManager: MediaPlayerManager by inject()
+    private val pageChangeCallback = PageChangeCallback()
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        return inflater.inflate(R.layout.now_playing_wrapper, container, false)
+    }
+
+    override fun onResume() {
+        super.onResume()
+        if (mediaPlayerManager.currentMediaItemIndex >= 0)
+            viewPager.setCurrentItem(mediaPlayerManager.currentMediaItemIndex, false)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        nowPlayingCollectionAdapter = NowPlayingCollectionAdapter(this, mediaPlayerManager)
+        viewPager = view.findViewById(R.id.pager)
+        viewPager.currentItem = mediaPlayerManager.currentMediaItemIndex
+        viewPager.adapter = nowPlayingCollectionAdapter
+        isInitialized = false
+
+        // Subscribe to updates on current Item
+        rxBusSubscription = RxBus.playerStateObservable.subscribe {
+            if (it.state == Player.STATE_READY) {
+                viewPager.setCurrentItem(it.index, true)
+                isInitialized = true
+            }
+        }
+
+        viewPager.registerOnPageChangeCallback(pageChangeCallback)
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        rxBusSubscription?.dispose()
+        viewPager.unregisterOnPageChangeCallback(pageChangeCallback)
+    }
+
+    private inner class PageChangeCallback : ViewPager2.OnPageChangeCallback() {
+        override fun onPageSelected(position: Int) {
+            if (!isInitialized) return
+            val newIndex = mediaPlayerManager.getUnshuffledIndexOf(position)
+            if (mediaPlayerManager.currentMediaItemIndex != newIndex) {
+                mediaPlayerManager.seekTo(newIndex, 0)
+            }
+        }
+    }
+}
+
+class NowPlayingCollectionAdapter(
+    fragment: Fragment,
+    private val playerManager: MediaPlayerManager
+) : FragmentStateAdapter(fragment) {
+
+    override fun getItemCount(): Int {
+        return playerManager.mediaItemCount
+    }
+
+    override fun getItemId(position: Int): Long {
+        return playerManager.getMediaItemAt(playerManager.getUnshuffledIndexOf(position))
+            .hashCode().toLong()
+    }
+
+    override fun createFragment(position: Int): Fragment {
+        // Return a NEW fragment instance in createFragment(int)
+        val mediaItem = playerManager.getMediaItemAt(playerManager.getUnshuffledIndexOf(position))
+        return NowPlayingChildFragment(mediaItem)
+    }
+}
+
+/**
+ * Contains the mini-now playing information box displayed at the bottom of the screen
+ */
+class NowPlayingChildFragment(private val mediaItem: MediaItem?) : Fragment() {
 
     private var playButton: MaterialButton? = null
     private var nowPlayingAlbumArtImage: ImageView? = null
@@ -79,7 +159,7 @@ class NowPlayingFragment : Fragment() {
 
     override fun onDestroy() {
         super.onDestroy()
-        rxBusSubscription!!.dispose()
+        rxBusSubscription?.dispose()
     }
 
     @SuppressLint("ClickableViewAccessibility")
@@ -91,7 +171,7 @@ class NowPlayingFragment : Fragment() {
                 playButton!!.setIconResource(R.drawable.media_start)
             }
 
-            val file = mediaPlayerManager.currentMediaItem?.toTrack()
+            val file = mediaItem?.toTrack()
 
             if (file != null) {
                 val title = file.title
@@ -121,53 +201,14 @@ class NowPlayingFragment : Fragment() {
                 }
             }
 
-            requireView().setOnTouchListener { _: View?, event: MotionEvent ->
-                handleOnTouch(event)
+            requireView().setOnClickListener {
+                Navigation.findNavController(requireActivity(), R.id.nav_host_fragment)
+                    .navigate(R.id.playerFragment)
             }
 
-            // This empty onClickListener is necessary for the onTouchListener to work
-            requireView().setOnClickListener { }
             playButton!!.setOnClickListener { mediaPlayerManager.togglePlayPause() }
         } catch (all: Exception) {
             Timber.w(all, "Failed to get notification cover art")
         }
     }
-
-    private fun handleOnTouch(event: MotionEvent): Boolean {
-        when (event.action) {
-            MotionEvent.ACTION_DOWN -> {
-                downX = event.x
-                downY = event.y
-            }
-
-            MotionEvent.ACTION_UP -> {
-                val upX = event.x
-                val upY = event.y
-                val deltaX = downX - upX
-                val deltaY = downY - upY
-
-                if (abs(deltaX) > MIN_DISTANCE) {
-                    // left or right
-                    if (deltaX < 0) {
-                        mediaPlayerManager.seekToPrevious()
-                    }
-                    if (deltaX > 0) {
-                        mediaPlayerManager.seekToNext()
-                    }
-                } else if (abs(deltaY) > MIN_DISTANCE) {
-                    if (deltaY < 0) {
-                        RxBus.dismissNowPlayingCommandPublisher.onNext(Unit)
-                    }
-                } else {
-                    Navigation.findNavController(requireActivity(), R.id.nav_host_fragment)
-                        .navigate(R.id.playerFragment)
-                }
-            }
-        }
-        return false
-    }
-
-    companion object {
-        private const val MIN_DISTANCE = 30
-    }
 }

ultrasonic/src/main/res/layout/now_playing_wrapper.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:a="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    a:id="@+id/now_playing_wrapper"
+    a:layout_width="fill_parent"
+    a:layout_height="wrap_content">
+    <androidx.viewpager2.widget.ViewPager2
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:id="@+id/pager"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+</LinearLayout>