Merge pull request #4947 from nextcloud/improveCallGrid

Improve call grid & Picture-inPicture view

app/src/main/java/com/nextcloud/talk/activities/CallActivity.kt

@@ -42,13 +42,14 @@ import android.view.OrientationEventListener
 import android.view.View
 import android.view.View.OnTouchListener
 import android.view.ViewGroup
-import android.view.ViewTreeObserver.OnGlobalLayoutListener
-import android.widget.AdapterView
 import android.widget.FrameLayout
 import android.widget.RelativeLayout
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.annotation.DrawableRes
 import androidx.appcompat.app.AlertDialog
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.mutableStateListOf
 import androidx.core.graphics.drawable.DrawableCompat
 import androidx.core.graphics.toColorInt
 import androidx.core.net.toUri
@@ -59,7 +60,6 @@ import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.snackbar.Snackbar
 import com.nextcloud.talk.R
 import com.nextcloud.talk.adapters.ParticipantDisplayItem
-import com.nextcloud.talk.adapters.ParticipantsAdapter
 import com.nextcloud.talk.api.NcApi
 import com.nextcloud.talk.application.NextcloudTalkApplication
 import com.nextcloud.talk.application.NextcloudTalkApplication.Companion.sharedApplication
@@ -74,6 +74,7 @@ import com.nextcloud.talk.call.MessageSenderMcu
 import com.nextcloud.talk.call.MessageSenderNoMcu
 import com.nextcloud.talk.call.MutableLocalCallParticipantModel
 import com.nextcloud.talk.call.ReactionAnimator
+import com.nextcloud.talk.call.components.ParticipantGrid
 import com.nextcloud.talk.chat.ChatActivity
 import com.nextcloud.talk.data.user.model.User
 import com.nextcloud.talk.databinding.CallActivityBinding
@@ -303,8 +304,8 @@ class CallActivity : CallBaseActivity() {
     private var handler: Handler? = null
     private var currentCallStatus: CallStatus? = null
     private var mediaPlayer: MediaPlayer? = null
-    private var participantDisplayItems: MutableMap<String, ParticipantDisplayItem?>? = null
-    private var participantsAdapter: ParticipantsAdapter? = null
+
+    private val participantItems = mutableStateListOf<ParticipantDisplayItem>()
     private var binding: CallActivityBinding? = null
     private var audioOutputDialog: AudioOutputDialog? = null
     private var moreCallActionsDialog: MoreCallActionsDialog? = null
@@ -399,7 +400,6 @@ class CallActivity : CallBaseActivity() {
             .setRepeatCount(PulseAnimation.INFINITE)
             .setRepeatMode(PulseAnimation.REVERSE)
         callParticipants = HashMap()
-        participantDisplayItems = HashMap()
         reactionAnimator = ReactionAnimator(context, binding!!.reactionAnimationWrapper, viewThemeUtils)
 
         checkInitialDevicePermissions()
@@ -734,10 +734,7 @@ class CallActivity : CallBaseActivity() {
         }
 
         binding!!.switchSelfVideoButton.setOnClickListener { switchCamera() }
-        binding!!.gridview.onItemClickListener =
-            AdapterView.OnItemClickListener { _: AdapterView<*>?, _: View?, _: Int, _: Long ->
-                animateCallControls(true, 0)
-            }
+
         binding!!.lowerHandButton.setOnClickListener { l: View? -> raiseHandViewModel!!.lowerHand() }
         binding!!.pictureInPictureButton.setOnClickListener { enterPipMode() }
     }
@@ -890,20 +887,20 @@ class CallActivity : CallBaseActivity() {
             val callControlsHeight =
                 applicationContext.resources.getDimension(R.dimen.call_controls_height).roundToInt()
             params.setMargins(0, 0, 0, callControlsHeight)
-            binding!!.gridview.layoutParams = params
+            binding!!.composeParticipantGrid.layoutParams = params
         } else {
             val params = RelativeLayout.LayoutParams(
                 ViewGroup.LayoutParams.MATCH_PARENT,
                 ViewGroup.LayoutParams.WRAP_CONTENT
             )
             params.setMargins(0, 0, 0, 0)
-            binding!!.gridview.layoutParams = params
+            binding!!.composeParticipantGrid.layoutParams = params
             if (cameraEnumerator!!.deviceNames.size < 2) {
                 binding!!.switchSelfVideoButton.visibility = View.GONE
             }
             initSelfVideoViewForNormalMode()
         }
-        binding!!.gridview.setOnTouchListener { _, me ->
+        binding!!.composeParticipantGrid.setOnTouchListener { _, me ->
             val action = me.actionMasked
             if (action == MotionEvent.ACTION_DOWN) {
                 animateCallControls(true, 0)
@@ -920,7 +917,8 @@ class CallActivity : CallBaseActivity() {
             false
         }
         animateCallControls(true, 0)
-        initGridAdapter()
+        initGrid()
+        binding!!.composeParticipantGrid.z = 0f
     }
 
     @SuppressLint("ClickableViewAccessibility")
@@ -935,72 +933,28 @@ class CallActivity : CallBaseActivity() {
         binding!!.selfVideoRenderer.setEnableHardwareScaler(false)
         binding!!.selfVideoRenderer.setScalingType(RendererCommon.ScalingType.SCALE_ASPECT_FIT)
         binding!!.selfVideoRenderer.setOnTouchListener(SelfVideoTouchListener())
+
+        binding!!.pipSelfVideoRenderer.clearImage()
+        binding!!.pipSelfVideoRenderer.release()
     }
 
-    private fun initSelfVideoViewForPipMode() {
-        try {
-            binding!!.pipSelfVideoRenderer.init(rootEglBase!!.eglBaseContext, null)
-        } catch (e: IllegalStateException) {
-            Log.d(TAG, "pipGroupVideoRenderer already initialized", e)
-        }
-        binding!!.pipSelfVideoRenderer.setZOrderMediaOverlay(true)
-        // disabled because it causes some devices to crash
-        binding!!.pipSelfVideoRenderer.setEnableHardwareScaler(false)
-        binding!!.pipSelfVideoRenderer.setScalingType(RendererCommon.ScalingType.SCALE_ASPECT_FIT)
-
-        localVideoTrack!!.addSink(binding!!.pipSelfVideoRenderer)
-    }
-
-    private fun initGridAdapter() {
-        Log.d(TAG, "initGridAdapter")
-        val columns: Int
-        val participantsInGrid = participantDisplayItems!!.size
-        columns = if (resources != null &&
-            resources.configuration.orientation == Configuration.ORIENTATION_PORTRAIT
-        ) {
-            if (participantsInGrid > 2) {
-                GRID_MAX_COLUMN_COUNT_PORTRAIT
-            } else {
-                GRID_MIN_COLUMN_COUNT_PORTRAIT
-            }
-        } else {
-            if (participantsInGrid > 2) {
-                GRID_MAX_COLUMN_COUNT_LANDSCAPE
-            } else if (participantsInGrid > 1) {
-                GRID_MIN_GROUP_COLUMN_COUNT_LANDSCAPE
-            } else {
-                GRID_MIN_COLUMN_COUNT_LANDSCAPE
+    private fun initGrid() {
+        Log.d(TAG, "initGrid")
+        binding!!.composeParticipantGrid.visibility = View.VISIBLE
+        binding!!.composeParticipantGrid.setContent {
+            MaterialTheme {
+                val participantUiStates = participantItems.map { it.uiStateFlow.collectAsState().value }
+                ParticipantGrid(
+                    participantUiStates = participantUiStates,
+                    eglBase = rootEglBase!!,
+                    isVoiceOnlyCall = isVoiceOnlyCall,
+                    isInPipMode = isInPipMode
+                ) {
+                    animateCallControls(true, 0)
+                }
             }
         }
-        binding!!.gridview.numColumns = columns
-        binding!!.conversationRelativeLayout
-            .viewTreeObserver
-            .addOnGlobalLayoutListener(object : OnGlobalLayoutListener {
-                override fun onGlobalLayout() {
-                    binding!!.conversationRelativeLayout.viewTreeObserver.removeOnGlobalLayoutListener(this)
-                    val height = binding!!.conversationRelativeLayout.measuredHeight
-                    binding!!.gridview.minimumHeight = height
-                }
-            })
-        binding!!.callInfosLinearLayout
-            .viewTreeObserver
-            .addOnGlobalLayoutListener(object : OnGlobalLayoutListener {
-                override fun onGlobalLayout() {
-                    binding!!.callInfosLinearLayout.viewTreeObserver.removeOnGlobalLayoutListener(this)
-                }
-            })
-        if (participantsAdapter != null) {
-            participantsAdapter!!.destroy()
-        }
-        participantsAdapter = ParticipantsAdapter(
-            this,
-            participantDisplayItems,
-            binding!!.conversationRelativeLayout,
-            binding!!.callInfosLinearLayout,
-            columns,
-            isVoiceOnlyCall
-        )
-        binding!!.gridview.adapter = participantsAdapter
+
         if (isInPipMode) {
             updateUiForPipMode()
         }
@@ -2116,7 +2070,11 @@ class CallActivity : CallBaseActivity() {
             videoCapturer!!.dispose()
             videoCapturer = null
         }
+        binding!!.selfVideoRenderer.clearImage()
         binding!!.selfVideoRenderer.release()
+
+        binding!!.pipSelfVideoRenderer.clearImage()
+        binding!!.pipSelfVideoRenderer.release()
         if (audioSource != null) {
             audioSource!!.dispose()
             audioSource = null
@@ -2219,6 +2177,7 @@ class CallActivity : CallBaseActivity() {
                             startVideoCapture(true)
                         }
                     }
+
                     in ANGLE_LANDSCAPE_RIGHT_THRESHOLD_MIN..ANGLE_LANDSCAPE_RIGHT_THRESHOLD_MAX,
                     in ANGLE_LANDSCAPE_LEFT_THRESHOLD_MIN..ANGLE_LANDSCAPE_LEFT_THRESHOLD_MAX -> {
                         if (lastAspectRatio != RATIO_16_TO_9) {
@@ -2571,18 +2530,17 @@ class CallActivity : CallBaseActivity() {
     }
 
     private fun removeParticipantDisplayItem(sessionId: String?, videoStreamType: String) {
-        Log.d(TAG, "removeParticipantDisplayItem")
-        val participantDisplayItem = participantDisplayItems!!.remove("$sessionId-$videoStreamType") ?: return
-        participantDisplayItem.destroy()
-        if (!isDestroyed) {
-            initGridAdapter()
-        }
+        val key = "$sessionId-$videoStreamType"
+        val participant = participantItems.find { it.sessionKey == key }
+        participant?.destroy()
+        participantItems.removeAll { it.sessionKey == key }
+        initGrid()
     }
 
     @Subscribe(threadMode = ThreadMode.MAIN)
     fun onMessageEvent(configurationChangeEvent: ConfigurationChangeEvent?) {
         powerManagerUtils!!.setOrientation(Objects.requireNonNull(resources).configuration.orientation)
-        initGridAdapter()
+        initGrid()
     }
 
     private fun updateSelfVideoViewIceConnectionState(iceConnectionState: IceConnectionState) {
@@ -2677,22 +2635,26 @@ class CallActivity : CallBaseActivity() {
     }
 
     private fun addParticipantDisplayItem(callParticipantModel: CallParticipantModel, videoStreamType: String) {
-        if (callParticipantModel.isInternal != null && callParticipantModel.isInternal) {
-            return
-        }
+        if (callParticipantModel.isInternal == true) return
+
         val defaultGuestNick = resources.getString(R.string.nc_nick_guest)
         val participantDisplayItem = ParticipantDisplayItem(
-            context,
-            baseUrl,
-            defaultGuestNick,
-            rootEglBase,
-            videoStreamType,
-            roomToken,
-            callParticipantModel
+            context = context,
+            baseUrl = baseUrl!!,
+            defaultGuestNick = defaultGuestNick,
+            rootEglBase = rootEglBase!!,
+            streamType = videoStreamType,
+            roomToken = roomToken!!,
+            callParticipantModel = callParticipantModel
         )
-        val sessionId = callParticipantModel.sessionId
-        participantDisplayItems!!["$sessionId-$videoStreamType"] = participantDisplayItem
-        initGridAdapter()
+
+        val sessionKey = participantDisplayItem.sessionKey
+
+        if (participantItems.none { it.sessionKey == sessionKey }) {
+            participantItems.add(participantDisplayItem)
+        }
+
+        initGrid()
     }
 
     private fun setCallState(callState: CallStatus) {
@@ -2712,6 +2674,7 @@ class CallActivity : CallBaseActivity() {
                     handler!!.postDelayed({ setCallState(CallStatus.CALLING_TIMEOUT) }, CALLING_TIMEOUT)
                     handler!!.post { handleCallStateJoined() }
                 }
+
                 CallStatus.IN_CONVERSATION -> handler!!.post { handleCallStateInConversation() }
                 CallStatus.OFFLINE -> handler!!.post { handleCallStateOffline() }
                 CallStatus.LEAVING -> handler!!.post { handleCallStateLeaving() }
@@ -2725,7 +2688,7 @@ class CallActivity : CallBaseActivity() {
             binding!!.callModeTextView.text = descriptionForCallType
             binding!!.callStates.callStateTextView.setText(R.string.nc_leaving_call)
             binding!!.callStates.callStateRelativeLayout.visibility = View.VISIBLE
-            binding!!.gridview.visibility = View.INVISIBLE
+            binding!!.composeParticipantGrid.visibility = View.INVISIBLE
             binding!!.callStates.callStateProgressBar.visibility = View.VISIBLE
             binding!!.callStates.errorImageView.visibility = View.GONE
         }
@@ -2737,8 +2700,8 @@ class CallActivity : CallBaseActivity() {
         if (binding!!.callStates.callStateRelativeLayout.visibility != View.VISIBLE) {
             binding!!.callStates.callStateRelativeLayout.visibility = View.VISIBLE
         }
-        if (binding!!.gridview.visibility != View.INVISIBLE) {
-            binding!!.gridview.visibility = View.INVISIBLE
+        if (binding!!.composeParticipantGrid.visibility != View.INVISIBLE) {
+            binding!!.composeParticipantGrid.visibility = View.INVISIBLE
         }
         if (binding!!.callStates.callStateProgressBar.visibility != View.GONE) {
             binding!!.callStates.callStateProgressBar.visibility = View.GONE
@@ -2764,8 +2727,8 @@ class CallActivity : CallBaseActivity() {
         if (binding!!.callStates.callStateProgressBar.visibility != View.GONE) {
             binding!!.callStates.callStateProgressBar.visibility = View.GONE
         }
-        if (binding!!.gridview.visibility != View.VISIBLE) {
-            binding!!.gridview.visibility = View.VISIBLE
+        if (binding!!.composeParticipantGrid.visibility != View.VISIBLE) {
+            binding!!.composeParticipantGrid.visibility = View.VISIBLE
         }
         if (binding!!.callStates.errorImageView.visibility != View.GONE) {
             binding!!.callStates.errorImageView.visibility = View.GONE
@@ -2785,8 +2748,8 @@ class CallActivity : CallBaseActivity() {
         if (binding!!.callStates.callStateProgressBar.visibility != View.VISIBLE) {
             binding!!.callStates.callStateProgressBar.visibility = View.VISIBLE
         }
-        if (binding!!.gridview.visibility != View.INVISIBLE) {
-            binding!!.gridview.visibility = View.INVISIBLE
+        if (binding!!.composeParticipantGrid.visibility != View.INVISIBLE) {
+            binding!!.composeParticipantGrid.visibility = View.INVISIBLE
         }
         if (binding!!.callStates.errorImageView.visibility != View.GONE) {
             binding!!.callStates.errorImageView.visibility = View.GONE
@@ -2800,8 +2763,8 @@ class CallActivity : CallBaseActivity() {
         if (binding!!.callStates.callStateRelativeLayout.visibility != View.VISIBLE) {
             binding!!.callStates.callStateRelativeLayout.visibility = View.VISIBLE
         }
-        if (binding!!.gridview.visibility != View.INVISIBLE) {
-            binding!!.gridview.visibility = View.INVISIBLE
+        if (binding!!.composeParticipantGrid.visibility != View.INVISIBLE) {
+            binding!!.composeParticipantGrid.visibility = View.INVISIBLE
         }
         if (binding!!.callStates.callStateProgressBar.visibility != View.VISIBLE) {
             binding!!.callStates.callStateProgressBar.visibility = View.VISIBLE
@@ -2818,8 +2781,8 @@ class CallActivity : CallBaseActivity() {
         if (binding!!.callStates.callStateRelativeLayout.visibility != View.VISIBLE) {
             binding!!.callStates.callStateRelativeLayout.visibility = View.VISIBLE
         }
-        if (binding!!.gridview.visibility != View.INVISIBLE) {
-            binding!!.gridview.visibility = View.INVISIBLE
+        if (binding!!.composeParticipantGrid.visibility != View.INVISIBLE) {
+            binding!!.composeParticipantGrid.visibility = View.INVISIBLE
         }
         if (binding!!.callStates.callStateProgressBar.visibility != View.VISIBLE) {
             binding!!.callStates.callStateProgressBar.visibility = View.VISIBLE
@@ -2839,8 +2802,8 @@ class CallActivity : CallBaseActivity() {
         if (binding!!.callStates.callStateProgressBar.visibility != View.GONE) {
             binding!!.callStates.callStateProgressBar.visibility = View.GONE
         }
-        if (binding!!.gridview.visibility != View.INVISIBLE) {
-            binding!!.gridview.visibility = View.INVISIBLE
+        if (binding!!.composeParticipantGrid.visibility != View.INVISIBLE) {
+            binding!!.composeParticipantGrid.visibility = View.INVISIBLE
         }
         binding!!.callStates.errorImageView.setImageResource(R.drawable.ic_av_timer_timer_24dp)
         if (binding!!.callStates.errorImageView.visibility != View.VISIBLE) {
@@ -2860,8 +2823,8 @@ class CallActivity : CallBaseActivity() {
         if (binding!!.callStates.callStateRelativeLayout.visibility != View.VISIBLE) {
             binding!!.callStates.callStateRelativeLayout.visibility = View.VISIBLE
         }
-        if (binding!!.gridview.visibility != View.INVISIBLE) {
-            binding!!.gridview.visibility = View.INVISIBLE
+        if (binding!!.composeParticipantGrid.visibility != View.INVISIBLE) {
+            binding!!.composeParticipantGrid.visibility = View.INVISIBLE
         }
         if (binding!!.callStates.callStateProgressBar.visibility != View.VISIBLE) {
             binding!!.callStates.callStateProgressBar.visibility = View.VISIBLE
@@ -3021,8 +2984,8 @@ class CallActivity : CallBaseActivity() {
                 removeParticipantDisplayItem(sessionId, "screen")
                 return
             }
-            val hasScreenParticipantDisplayItem = participantDisplayItems!!["$sessionId-screen"] != null
-            if (!hasScreenParticipantDisplayItem) {
+            val screenParticipantDisplayItem = participantItems.find { it.sessionKey == "$sessionId-screen" }
+            if (screenParticipantDisplayItem == null) {
                 addParticipantDisplayItem(callParticipantModel, "screen")
             }
         }
@@ -3225,30 +3188,46 @@ class CallActivity : CallBaseActivity() {
 
     override fun updateUiForPipMode() {
         Log.d(TAG, "updateUiForPipMode")
-        val params = RelativeLayout.LayoutParams(
-            ViewGroup.LayoutParams.MATCH_PARENT,
-            ViewGroup.LayoutParams.WRAP_CONTENT
-        )
-        params.setMargins(0, 0, 0, 0)
-        binding!!.gridview.layoutParams = params
         binding!!.callControls.visibility = View.GONE
         binding!!.callInfosLinearLayout.visibility = View.GONE
         binding!!.selfVideoViewWrapper.visibility = View.GONE
         binding!!.callStates.callStateRelativeLayout.visibility = View.GONE
+        binding!!.pipCallConversationNameTextView.text = conversationName
 
+        binding!!.selfVideoRenderer.clearImage()
         binding!!.selfVideoRenderer.release()
-        if (participantDisplayItems!!.size > 1) {
-            binding!!.pipCallConversationNameTextView.text = conversationName
-            binding!!.pipSelfVideoOverlay.visibility = View.VISIBLE
-            initSelfVideoViewForPipMode()
+
+        if (participantItems.size == 1) {
+            binding!!.pipOverlay.visibility = View.GONE
         } else {
-            binding!!.pipSelfVideoOverlay.visibility = View.GONE
+            binding!!.composeParticipantGrid.visibility = View.GONE
+
+            if (localVideoTrack?.enabled() == true) {
+                binding!!.pipOverlay.visibility = View.VISIBLE
+                binding!!.pipSelfVideoRenderer.visibility = View.VISIBLE
+
+                try {
+                    binding!!.pipSelfVideoRenderer.init(rootEglBase!!.eglBaseContext, null)
+                } catch (e: IllegalStateException) {
+                    Log.d(TAG, "pipGroupVideoRenderer already initialized", e)
+                }
+                binding!!.pipSelfVideoRenderer.setZOrderMediaOverlay(true)
+                // disabled because it causes some devices to crash
+                binding!!.pipSelfVideoRenderer.setEnableHardwareScaler(false)
+                binding!!.pipSelfVideoRenderer.setScalingType(RendererCommon.ScalingType.SCALE_ASPECT_FIT)
+
+                localVideoTrack?.addSink(binding?.pipSelfVideoRenderer)
+            } else {
+                binding!!.pipOverlay.visibility = View.VISIBLE
+                binding!!.pipSelfVideoRenderer.visibility = View.GONE
+            }
         }
     }
 
     override fun updateUiForNormalMode() {
         Log.d(TAG, "updateUiForNormalMode")
-        binding!!.pipSelfVideoOverlay.visibility = View.GONE
+        binding!!.pipOverlay.visibility = View.GONE
+        binding!!.composeParticipantGrid.visibility = View.VISIBLE
 
         if (isVoiceOnlyCall) {
             binding!!.callControls.visibility = View.VISIBLE
@@ -3353,10 +3332,10 @@ class CallActivity : CallBaseActivity() {
         private const val SELFVIDEO_WIDTH_16_TO_9_RATIO = 136
         private const val SELFVIDEO_HEIGHT_16_TO_9_RATIO = 80
 
-        private const val SELFVIDEO_POSITION_X_LANDSCAPE = 100F
-        private const val SELFVIDEO_POSITION_Y_LANDSCAPE = 100F
+        private const val SELFVIDEO_POSITION_X_LANDSCAPE = 50F
+        private const val SELFVIDEO_POSITION_Y_LANDSCAPE = 50F
         private const val SELFVIDEO_POSITION_X_PORTRAIT = 300F
-        private const val SELFVIDEO_POSITION_Y_PORTRAIT = 100F
+        private const val SELFVIDEO_POSITION_Y_PORTRAIT = 50F
 
         private const val FIVE_SECONDS: Long = 5000
         private const val CALLING_TIMEOUT: Long = 45000
@@ -3368,20 +3347,8 @@ class CallActivity : CallBaseActivity() {
         private const val SPOTLIGHT_HEADING_SIZE: Int = 20
         private const val SPOTLIGHT_SUBHEADING_SIZE: Int = 16
 
-        private const val GRID_MAX_COLUMN_COUNT_PORTRAIT: Int = 2
-        private const val GRID_MIN_COLUMN_COUNT_PORTRAIT: Int = 1
-        private const val GRID_MAX_COLUMN_COUNT_LANDSCAPE: Int = 3
-        private const val GRID_MIN_GROUP_COLUMN_COUNT_LANDSCAPE: Int = 2
-        private const val GRID_MIN_COLUMN_COUNT_LANDSCAPE: Int = 1
-
         private const val DELAY_ON_ERROR_STOP_THRESHOLD: Int = 16
 
-        private const val BY_50_PERCENT = 0.5
-        private const val BY_80_PERCENT = 0.8
-
-        private const val Y_POS_CALL_INFO: Float = 250f
-        private const val Y_POS_NO_CALL_INFO: Float = 20f
-
         private const val SESSION_ID_PREFFIX_END: Int = 4
     }
 }

app/src/main/java/com/nextcloud/talk/adapters/ParticipantDisplayItem.java

@@ -1,203 +0,0 @@
-/*
- * Nextcloud Talk - Android Client
- *
- * SPDX-FileCopyrightText: 2023 Andy Scherzinger <info@andy-scherzinger.de>
- * SPDX-FileCopyrightText: 2022 Daniel Calviño Sánchez <danxuliu@gmail.com>
- * SPDX-FileCopyrightText: 2021 Marcel Hibbe <dev@mhibbe.de>
- * SPDX-License-Identifier: GPL-3.0-or-later
- */
-package com.nextcloud.talk.adapters;
-
-import android.content.Context;
-import android.os.Handler;
-import android.os.Looper;
-import android.text.TextUtils;
-
-import com.nextcloud.talk.call.CallParticipantModel;
-import com.nextcloud.talk.call.RaisedHand;
-import com.nextcloud.talk.models.json.participants.Participant;
-import com.nextcloud.talk.utils.ApiUtils;
-import com.nextcloud.talk.utils.DisplayUtils;
-
-import org.webrtc.EglBase;
-import org.webrtc.MediaStream;
-import org.webrtc.PeerConnection;
-
-public class ParticipantDisplayItem {
-
-    /**
-     * Shared handler to receive change notifications from the model on the main thread.
-     */
-    private static final Handler handler = new Handler(Looper.getMainLooper());
-
-    private final ParticipantDisplayItemNotifier participantDisplayItemNotifier = new ParticipantDisplayItemNotifier();
-
-    private final Context context;
-
-    private final String baseUrl;
-    private final String defaultGuestNick;
-    private final EglBase rootEglBase;
-
-    private final String session;
-    private final String streamType;
-
-    private final String roomToken;
-
-    private final CallParticipantModel callParticipantModel;
-
-    private Participant.ActorType actorType;
-    private String actorId;
-    private String userId;
-    private PeerConnection.IceConnectionState iceConnectionState;
-    private String nick;
-    private String urlForAvatar;
-    private MediaStream mediaStream;
-    private boolean streamEnabled;
-    private boolean isAudioEnabled;
-    private RaisedHand raisedHand;
-
-    public interface Observer {
-        void onChange();
-    }
-
-    private final CallParticipantModel.Observer callParticipantModelObserver = new CallParticipantModel.Observer() {
-        @Override
-        public void onChange() {
-            updateFromModel();
-        }
-
-        @Override
-        public void onReaction(String reaction) {
-        }
-    };
-
-    public ParticipantDisplayItem(Context context, String baseUrl, String defaultGuestNick, EglBase rootEglBase,
-                                  String streamType, String roomToken, CallParticipantModel callParticipantModel) {
-        this.context = context;
-
-        this.baseUrl = baseUrl;
-        this.defaultGuestNick = defaultGuestNick;
-        this.rootEglBase = rootEglBase;
-
-        this.session = callParticipantModel.getSessionId();
-        this.streamType = streamType;
-
-        this.roomToken = roomToken;
-
-        this.callParticipantModel = callParticipantModel;
-        this.callParticipantModel.addObserver(callParticipantModelObserver, handler);
-
-        updateFromModel();
-    }
-
-    public void destroy() {
-        this.callParticipantModel.removeObserver(callParticipantModelObserver);
-    }
-
-    private void updateFromModel() {
-        actorType = callParticipantModel.getActorType();
-        actorId = callParticipantModel.getActorId();
-        userId = callParticipantModel.getUserId();
-        nick = callParticipantModel.getNick();
-
-        this.updateUrlForAvatar();
-
-        if ("screen".equals(streamType)) {
-            iceConnectionState = callParticipantModel.getScreenIceConnectionState();
-            mediaStream = callParticipantModel.getScreenMediaStream();
-            isAudioEnabled = true;
-            streamEnabled = true;
-        } else {
-            iceConnectionState = callParticipantModel.getIceConnectionState();
-            mediaStream = callParticipantModel.getMediaStream();
-            isAudioEnabled = callParticipantModel.isAudioAvailable() != null ?
-                callParticipantModel.isAudioAvailable() : false;
-            streamEnabled = callParticipantModel.isVideoAvailable() != null ?
-                callParticipantModel.isVideoAvailable() : false;
-        }
-
-        raisedHand = callParticipantModel.getRaisedHand();
-
-        participantDisplayItemNotifier.notifyChange();
-    }
-
-    private void updateUrlForAvatar() {
-        if (actorType == Participant.ActorType.FEDERATED) {
-            int darkTheme = DisplayUtils.INSTANCE.isDarkModeOn(context) ? 1 : 0;
-            urlForAvatar = ApiUtils.getUrlForFederatedAvatar(baseUrl, roomToken, actorId, darkTheme, true);
-        } else if (!TextUtils.isEmpty(userId)) {
-            urlForAvatar = ApiUtils.getUrlForAvatar(baseUrl, userId, true);
-        } else {
-            urlForAvatar = ApiUtils.getUrlForGuestAvatar(baseUrl, getNick(), true);
-        }
-    }
-
-    public boolean isConnected() {
-        return iceConnectionState == PeerConnection.IceConnectionState.CONNECTED ||
-            iceConnectionState == PeerConnection.IceConnectionState.COMPLETED ||
-            // If there is no connection state that means that no connection is needed, so it is a special case that is
-            // also seen as "connected".
-            iceConnectionState == null;
-    }
-
-    public String getNick() {
-        if (TextUtils.isEmpty(userId) && TextUtils.isEmpty(nick)) {
-            return defaultGuestNick;
-        }
-
-        return nick;
-    }
-
-    public String getUrlForAvatar() {
-        return urlForAvatar;
-    }
-
-    public MediaStream getMediaStream() {
-        return mediaStream;
-    }
-
-    public boolean isStreamEnabled() {
-        return streamEnabled;
-    }
-
-    public EglBase getRootEglBase() {
-        return rootEglBase;
-    }
-
-    public boolean isAudioEnabled() {
-        return isAudioEnabled;
-    }
-
-    public RaisedHand getRaisedHand() {
-        return raisedHand;
-    }
-
-    public Participant.ActorType getActorType() {
-        return actorType;
-    }
-
-    public void addObserver(Observer observer) {
-        participantDisplayItemNotifier.addObserver(observer);
-    }
-
-    public void removeObserver(Observer observer) {
-        participantDisplayItemNotifier.removeObserver(observer);
-    }
-
-    @Override
-    public String toString() {
-        return "ParticipantSession{" +
-                "userId='" + userId + '\'' +
-                ", actorType='" + actorType + '\'' +
-                ", actorId='" + actorId + '\'' +
-                ", session='" + session + '\'' +
-                ", nick='" + nick + '\'' +
-                ", urlForAvatar='" + urlForAvatar + '\'' +
-                ", mediaStream=" + mediaStream +
-                ", streamType='" + streamType + '\'' +
-                ", streamEnabled=" + streamEnabled +
-                ", rootEglBase=" + rootEglBase +
-                ", raisedHand=" + raisedHand +
-                '}';
-    }
-}

app/src/main/java/com/nextcloud/talk/adapters/ParticipantDisplayItem.kt

@@ -0,0 +1,217 @@
+/*
+ * Nextcloud Talk - Android Client
+ *
+ * SPDX-FileCopyrightText: 2023 Andy Scherzinger <info@andy-scherzinger.de>
+ * SPDX-FileCopyrightText: 2022 Daniel Calviño Sánchez <danxuliu@gmail.com>
+ * SPDX-FileCopyrightText: 2021-2025 Marcel Hibbe <dev@mhibbe.de>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+package com.nextcloud.talk.adapters
+
+import android.content.Context
+import android.os.Handler
+import android.os.Looper
+import android.text.TextUtils
+import android.util.Log
+import android.view.ViewGroup
+import com.nextcloud.talk.call.CallParticipantModel
+import com.nextcloud.talk.call.RaisedHand
+import com.nextcloud.talk.models.json.participants.Participant.ActorType
+import com.nextcloud.talk.utils.ApiUtils.getUrlForAvatar
+import com.nextcloud.talk.utils.ApiUtils.getUrlForFederatedAvatar
+import com.nextcloud.talk.utils.ApiUtils.getUrlForGuestAvatar
+import com.nextcloud.talk.utils.DisplayUtils.isDarkModeOn
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import org.webrtc.EglBase
+import org.webrtc.MediaStream
+import org.webrtc.PeerConnection.IceConnectionState
+import org.webrtc.SurfaceViewRenderer
+
+data class ParticipantUiState(
+    val sessionKey: String,
+    val nick: String,
+    val isConnected: Boolean,
+    val isAudioEnabled: Boolean,
+    val isStreamEnabled: Boolean,
+    val raisedHand: Boolean,
+    val avatarUrl: String?,
+    val mediaStream: MediaStream?
+)
+
+@Suppress("LongParameterList")
+class ParticipantDisplayItem(
+    private val context: Context,
+    private val baseUrl: String,
+    private val defaultGuestNick: String,
+    val rootEglBase: EglBase,
+    private val streamType: String,
+    private val roomToken: String,
+    private val callParticipantModel: CallParticipantModel
+) {
+    private val participantDisplayItemNotifier = ParticipantDisplayItemNotifier()
+
+    private val _uiStateFlow = MutableStateFlow(buildUiState())
+    val uiStateFlow: StateFlow<ParticipantUiState> = _uiStateFlow.asStateFlow()
+
+    private val session: String = callParticipantModel.sessionId
+
+    var actorType: ActorType? = null
+        private set
+    private var actorId: String? = null
+    private var userId: String? = null
+    private var iceConnectionState: IceConnectionState? = null
+    var nick: String? = null
+        get() = (if (TextUtils.isEmpty(userId) && TextUtils.isEmpty(field)) defaultGuestNick else field)
+
+    var urlForAvatar: String? = null
+        private set
+    var mediaStream: MediaStream? = null
+        private set
+    var isStreamEnabled: Boolean = false
+        private set
+    var isAudioEnabled: Boolean = false
+        private set
+    var raisedHand: RaisedHand? = null
+        private set
+    var surfaceViewRenderer: SurfaceViewRenderer? = null
+
+    val sessionKey: String
+        get() = "$session-$streamType"
+
+    interface Observer {
+        fun onChange()
+    }
+
+    private val callParticipantModelObserver: CallParticipantModel.Observer = object : CallParticipantModel.Observer {
+        override fun onChange() {
+            updateFromModel()
+        }
+
+        override fun onReaction(reaction: String) {
+            // unused
+        }
+    }
+
+    init {
+        callParticipantModel.addObserver(callParticipantModelObserver, handler)
+
+        updateFromModel()
+    }
+
+    @Suppress("Detekt.TooGenericExceptionCaught")
+    fun destroy() {
+        callParticipantModel.removeObserver(callParticipantModelObserver)
+
+        surfaceViewRenderer?.let { renderer ->
+            try {
+                mediaStream?.videoTracks?.firstOrNull()?.removeSink(renderer)
+                renderer.clearImage()
+                renderer.release()
+                (renderer.parent as? ViewGroup)?.removeView(renderer)
+            } catch (e: Exception) {
+                Log.w("ParticipantDisplayItem", "Error releasing renderer", e)
+            }
+        }
+        surfaceViewRenderer = null
+    }
+
+    private fun updateFromModel() {
+        actorType = callParticipantModel.actorType
+        actorId = callParticipantModel.actorId
+        userId = callParticipantModel.userId
+        nick = callParticipantModel.nick
+
+        updateUrlForAvatar()
+
+        if (streamType == "screen") {
+            iceConnectionState = callParticipantModel.screenIceConnectionState
+            mediaStream = callParticipantModel.screenMediaStream
+            isAudioEnabled = true
+            isStreamEnabled = true
+        } else {
+            iceConnectionState = callParticipantModel.iceConnectionState
+            mediaStream = callParticipantModel.mediaStream
+            isAudioEnabled = callParticipantModel.isAudioAvailable ?: false
+            isStreamEnabled = callParticipantModel.isVideoAvailable ?: false
+        }
+
+        raisedHand = callParticipantModel.raisedHand
+
+        if (surfaceViewRenderer == null && mediaStream != null) {
+            val renderer = SurfaceViewRenderer(context).apply {
+                init(rootEglBase.eglBaseContext, null)
+                setEnableHardwareScaler(true)
+                setMirror(false)
+            }
+            surfaceViewRenderer = renderer
+            mediaStream?.videoTracks?.firstOrNull()?.addSink(renderer)
+        }
+
+        _uiStateFlow.value = buildUiState()
+        participantDisplayItemNotifier.notifyChange()
+    }
+
+    private fun buildUiState(): ParticipantUiState {
+        return ParticipantUiState(
+            sessionKey = sessionKey,
+            nick = nick ?: "Guest",
+            isConnected = isConnected,
+            isAudioEnabled = isAudioEnabled,
+            isStreamEnabled = isStreamEnabled,
+            raisedHand = raisedHand?.state == true,
+            avatarUrl = urlForAvatar,
+            mediaStream = mediaStream
+        )
+    }
+
+    private fun updateUrlForAvatar() {
+        if (actorType == ActorType.FEDERATED) {
+            val darkTheme = if (isDarkModeOn(context)) 1 else 0
+            urlForAvatar = getUrlForFederatedAvatar(baseUrl, roomToken, actorId!!, darkTheme, true)
+        } else if (!TextUtils.isEmpty(userId)) {
+            urlForAvatar = getUrlForAvatar(baseUrl, userId, true)
+        } else {
+            urlForAvatar = getUrlForGuestAvatar(baseUrl, nick, true)
+        }
+    }
+
+    val isConnected: Boolean
+        get() = iceConnectionState == IceConnectionState.CONNECTED ||
+            iceConnectionState == IceConnectionState.COMPLETED ||
+            // If there is no connection state that means that no connection is needed,
+            // so it is a special case that is also seen as "connected".
+            iceConnectionState == null
+
+    fun addObserver(observer: Observer?) {
+        participantDisplayItemNotifier.addObserver(observer)
+    }
+
+    fun removeObserver(observer: Observer?) {
+        participantDisplayItemNotifier.removeObserver(observer)
+    }
+
+    override fun toString(): String {
+        return "ParticipantSession{" +
+            "userId='" + userId + '\'' +
+            ", actorType='" + actorType + '\'' +
+            ", actorId='" + actorId + '\'' +
+            ", session='" + session + '\'' +
+            ", nick='" + nick + '\'' +
+            ", urlForAvatar='" + urlForAvatar + '\'' +
+            ", mediaStream=" + mediaStream +
+            ", streamType='" + streamType + '\'' +
+            ", streamEnabled=" + isStreamEnabled +
+            ", rootEglBase=" + rootEglBase +
+            ", raisedHand=" + raisedHand +
+            '}'
+    }
+
+    companion object {
+        /**
+         * Shared handler to receive change notifications from the model on the main thread.
+         */
+        private val handler = Handler(Looper.getMainLooper())
+    }
+}

app/src/main/java/com/nextcloud/talk/adapters/ParticipantsAdapter.java

@@ -1,217 +0,0 @@
-/*
- * Nextcloud Talk - Android Client
- *
- * SPDX-FileCopyrightText: 2021-2023 Marcel Hibbe <dev@mhibbe.de>
- * SPDX-FileCopyrightText: 2022 Daniel Calviño Sánchez <danxuliu@gmail.com>
- * SPDX-License-Identifier: GPL-3.0-or-later
- */
-package com.nextcloud.talk.adapters;
-
-import android.content.Context;
-import android.util.Log;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.BaseAdapter;
-import android.widget.ImageView;
-import android.widget.LinearLayout;
-import android.widget.ProgressBar;
-import android.widget.RelativeLayout;
-import android.widget.TextView;
-
-import com.nextcloud.talk.R;
-import com.nextcloud.talk.activities.CallActivity;
-import com.nextcloud.talk.extensions.ImageViewExtensionsKt;
-import com.nextcloud.talk.models.json.participants.Participant;
-
-import org.webrtc.MediaStream;
-import org.webrtc.MediaStreamTrack;
-import org.webrtc.RendererCommon;
-import org.webrtc.SurfaceViewRenderer;
-import org.webrtc.VideoTrack;
-
-import java.util.ArrayList;
-import java.util.Map;
-
-public class ParticipantsAdapter extends BaseAdapter {
-
-    private static final String TAG = "ParticipantsAdapter";
-
-    private final ParticipantDisplayItem.Observer participantDisplayItemObserver = this::notifyDataSetChanged;
-
-    private final Context mContext;
-    private final ArrayList<ParticipantDisplayItem> participantDisplayItems;
-    private final RelativeLayout gridViewWrapper;
-    private final LinearLayout callInfosLinearLayout;
-    private final int columns;
-    private final boolean isVoiceOnlyCall;
-
-    public ParticipantsAdapter(Context mContext,
-                               Map<String, ParticipantDisplayItem> participantDisplayItems,
-                               RelativeLayout gridViewWrapper,
-                               LinearLayout callInfosLinearLayout,
-                               int columns,
-                               boolean isVoiceOnlyCall) {
-        this.mContext = mContext;
-        this.gridViewWrapper = gridViewWrapper;
-        this.callInfosLinearLayout = callInfosLinearLayout;
-        this.columns = columns;
-        this.isVoiceOnlyCall = isVoiceOnlyCall;
-
-        this.participantDisplayItems = new ArrayList<>();
-        this.participantDisplayItems.addAll(participantDisplayItems.values());
-
-        for (ParticipantDisplayItem participantDisplayItem : this.participantDisplayItems) {
-            participantDisplayItem.addObserver(participantDisplayItemObserver);
-        }
-    }
-
-    public void destroy() {
-        for (ParticipantDisplayItem participantDisplayItem : participantDisplayItems) {
-            participantDisplayItem.removeObserver(participantDisplayItemObserver);
-        }
-    }
-
-    @Override
-    public int getCount() {
-        return participantDisplayItems.size();
-    }
-
-    @Override
-    public ParticipantDisplayItem getItem(int position) {
-        return participantDisplayItems.get(position);
-    }
-
-    @Override
-    public long getItemId(int position) {
-        return 0;
-    }
-
-    @Override
-    public View getView(int position, View convertView, ViewGroup parent) {
-        ParticipantDisplayItem participantDisplayItem = getItem(position);
-
-        SurfaceViewRenderer surfaceViewRenderer;
-        if (convertView == null) {
-            convertView = LayoutInflater.from(mContext).inflate(R.layout.call_item, parent, false);
-            convertView.setVisibility(View.VISIBLE);
-
-            surfaceViewRenderer = convertView.findViewById(R.id.surface_view);
-            try {
-                Log.d(TAG, "hasSurface: " + participantDisplayItem.getRootEglBase().hasSurface());
-
-                surfaceViewRenderer.setMirror(false);
-                surfaceViewRenderer.init(participantDisplayItem.getRootEglBase().getEglBaseContext(), null);
-                surfaceViewRenderer.setZOrderMediaOverlay(false);
-                // disabled because it causes some devices to crash
-                surfaceViewRenderer.setEnableHardwareScaler(false);
-                surfaceViewRenderer.setScalingType(RendererCommon.ScalingType.SCALE_ASPECT_FIT);
-            } catch (Exception e) {
-                Log.e(TAG, "error while initializing surfaceViewRenderer", e);
-            }
-        } else {
-            surfaceViewRenderer = convertView.findViewById(R.id.surface_view);
-        }
-
-        ProgressBar progressBar = convertView.findViewById(R.id.participant_progress_bar);
-        if (!participantDisplayItem.isConnected()) {
-            progressBar.setVisibility(View.VISIBLE);
-        } else {
-            progressBar.setVisibility(View.GONE);
-        }
-
-        ViewGroup.LayoutParams layoutParams = convertView.getLayoutParams();
-        layoutParams.height = scaleGridViewItemHeight();
-        convertView.setLayoutParams(layoutParams);
-
-        TextView nickTextView = convertView.findViewById(R.id.peer_nick_text_view);
-        ImageView imageView = convertView.findViewById(R.id.avatarImageView);
-
-        MediaStream mediaStream = participantDisplayItem.getMediaStream();
-        if (hasVideoStream(participantDisplayItem, mediaStream)) {
-            VideoTrack videoTrack = mediaStream.videoTracks.get(0);
-            videoTrack.addSink(surfaceViewRenderer);
-            imageView.setVisibility(View.INVISIBLE);
-            surfaceViewRenderer.setVisibility(View.VISIBLE);
-            nickTextView.setVisibility(View.GONE);
-        } else {
-            imageView.setVisibility(View.VISIBLE);
-            surfaceViewRenderer.setVisibility(View.INVISIBLE);
-
-            if (((CallActivity) mContext).isInPipMode) {
-                nickTextView.setVisibility(View.GONE);
-            } else {
-                nickTextView.setVisibility(View.VISIBLE);
-                nickTextView.setText(participantDisplayItem.getNick());
-            }
-            if (participantDisplayItem.getActorType() == Participant.ActorType.GUESTS ||
-                participantDisplayItem.getActorType() == Participant.ActorType.EMAILS) {
-                ImageViewExtensionsKt.loadFirstLetterAvatar(
-                    imageView,
-                    String.valueOf(participantDisplayItem.getNick())
-                );
-            } else {
-                ImageViewExtensionsKt.loadAvatarWithUrl(imageView,null, participantDisplayItem.getUrlForAvatar());
-            }
-        }
-
-        ImageView audioOffView = convertView.findViewById(R.id.remote_audio_off);
-        if (!participantDisplayItem.isAudioEnabled()) {
-            audioOffView.setVisibility(View.VISIBLE);
-        } else {
-            audioOffView.setVisibility(View.GONE);
-        }
-
-        ImageView raisedHandView = convertView.findViewById(R.id.raised_hand);
-        if (participantDisplayItem.getRaisedHand() != null && participantDisplayItem.getRaisedHand().getState()) {
-            raisedHandView.setVisibility(View.VISIBLE);
-        } else {
-            raisedHandView.setVisibility(View.GONE);
-        }
-
-        return convertView;
-    }
-
-    private boolean hasVideoStream(ParticipantDisplayItem participantDisplayItem, MediaStream mediaStream) {
-        if (!participantDisplayItem.isStreamEnabled()) {
-            return false;
-        }
-
-        if (mediaStream == null || mediaStream.videoTracks == null) {
-            return false;
-        }
-
-        for (VideoTrack t : mediaStream.videoTracks) {
-            if (MediaStreamTrack.State.LIVE == t.state()) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    private int scaleGridViewItemHeight() {
-        int headerHeight = 0;
-        int callControlsHeight = 0;
-        if (callInfosLinearLayout.getVisibility() == View.VISIBLE && isVoiceOnlyCall) {
-            headerHeight = callInfosLinearLayout.getHeight();
-        }
-        if (isVoiceOnlyCall) {
-            callControlsHeight = Math.round(mContext.getResources().getDimension(R.dimen.call_controls_height));
-        }
-        int itemHeight = (gridViewWrapper.getHeight() - headerHeight - callControlsHeight) / getRowsCount(getCount());
-        int itemMinHeight = Math.round(mContext.getResources().getDimension(R.dimen.call_grid_item_min_height));
-        if (itemHeight < itemMinHeight) {
-            itemHeight = itemMinHeight;
-        }
-        return itemHeight;
-    }
-
-    private int getRowsCount(int items) {
-        int rows = (int) Math.ceil((double) items / (double) columns);
-        if (rows == 0) {
-            rows = 1;
-        }
-        return rows;
-    }
-}

app/src/main/java/com/nextcloud/talk/call/components/AvatarWithFallback.kt

@@ -0,0 +1,62 @@
+/*
+ * Nextcloud Talk - Android Client
+ *
+ * SPDX-FileCopyrightText: 2025 Marcel Hibbe <dev@mhibbe.de>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package com.nextcloud.talk.call.components
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.unit.sp
+import coil.compose.AsyncImage
+import com.nextcloud.talk.adapters.ParticipantUiState
+
+@Composable
+fun AvatarWithFallback(participant: ParticipantUiState, modifier: Modifier = Modifier) {
+    val initials = participant.nick
+        .split(" ")
+        .mapNotNull { it.firstOrNull()?.uppercase() }
+        .take(2)
+        .joinToString("")
+
+    Box(
+        modifier = modifier
+            .clip(CircleShape),
+        contentAlignment = Alignment.Center
+    ) {
+        if (!participant.avatarUrl.isNullOrEmpty()) {
+            AsyncImage(
+                model = participant.avatarUrl,
+                contentDescription = "Avatar",
+                contentScale = ContentScale.Crop,
+                modifier = Modifier
+                    .fillMaxSize()
+                    .clip(CircleShape)
+            )
+        } else {
+            Box(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .background(Color.White, CircleShape),
+                contentAlignment = Alignment.Center
+            ) {
+                Text(
+                    text = initials.ifEmpty { "?" },
+                    color = Color.Black,
+                    fontSize = 24.sp
+                )
+            }
+        }
+    }
+}

app/src/main/java/com/nextcloud/talk/call/components/ParticipantGrid.kt

@@ -0,0 +1,291 @@
+/*
+ * Nextcloud Talk - Android Client
+ *
+ * SPDX-FileCopyrightText: 2025 Marcel Hibbe <dev@mhibbe.de>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+@file:Suppress("MagicNumber", "TooManyFunctions")
+
+package com.nextcloud.talk.call.components
+
+import android.content.res.Configuration
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.lazy.grid.GridCells
+import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
+import androidx.compose.foundation.lazy.grid.items
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalConfiguration
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import com.nextcloud.talk.adapters.ParticipantUiState
+import org.webrtc.EglBase
+import kotlin.math.ceil
+
+@Suppress("LongParameterList")
+@Composable
+fun ParticipantGrid(
+    modifier: Modifier = Modifier,
+    eglBase: EglBase?,
+    participantUiStates: List<ParticipantUiState>,
+    isVoiceOnlyCall: Boolean,
+    isInPipMode: Boolean,
+    onClick: () -> Unit
+) {
+    val configuration = LocalConfiguration.current
+    val isPortrait = configuration.orientation == Configuration.ORIENTATION_PORTRAIT
+
+    val minItemHeight = 100.dp
+
+    val columns =
+        if (isPortrait) {
+            when (participantUiStates.size) {
+                1, 2, 3 -> 1
+                else -> 2
+            }
+        } else {
+            when (participantUiStates.size) {
+                1 -> 1
+                2, 4 -> 2
+                else -> 3
+            }
+        }
+
+    val rows = ceil(participantUiStates.size / columns.toFloat()).toInt()
+
+    val heightForNonGridComponents = if (isVoiceOnlyCall && !isInPipMode) {
+        // this is a workaround for now. It should ~summarize the height of callInfosLinearLayout and callControls
+        // Once everything is migrated to jetpack, this workaround should be obsolete or solved in a better way
+        240.dp
+    } else {
+        0.dp
+    }
+
+    val gridHeight = LocalConfiguration.current.screenHeightDp.dp - heightForNonGridComponents
+    val itemSpacing = 8.dp
+    val edgePadding = 8.dp
+
+    val totalVerticalSpacing = itemSpacing * (rows - 1)
+    val totalVerticalPadding = edgePadding * 2
+    val availableHeight = gridHeight - totalVerticalSpacing - totalVerticalPadding
+
+    val rawItemHeight = availableHeight / rows
+    val itemHeight = maxOf(rawItemHeight, minItemHeight)
+
+    LazyVerticalGrid(
+        columns = GridCells.Fixed(columns),
+        modifier = Modifier
+            .fillMaxSize()
+            .padding(horizontal = edgePadding)
+            .clickable { onClick() },
+        verticalArrangement = Arrangement.spacedBy(itemSpacing),
+        horizontalArrangement = Arrangement.spacedBy(itemSpacing),
+        contentPadding = PaddingValues(vertical = edgePadding)
+    ) {
+        items(
+            participantUiStates,
+            key = { it.sessionKey }
+        ) { participant ->
+            ParticipantTile(
+                participantUiState = participant,
+                modifier = Modifier
+                    .height(itemHeight)
+                    .fillMaxWidth(),
+                eglBase = eglBase,
+                isVoiceOnlyCall = isVoiceOnlyCall
+            )
+        }
+    }
+}
+
+@Preview
+@Composable
+fun ParticipantGridPreview() {
+    ParticipantGrid(
+        participantUiStates = getTestParticipants(1),
+        eglBase = null,
+        isVoiceOnlyCall = false,
+        isInPipMode = false
+    ) {}
+}
+
+@Preview
+@Composable
+fun TwoParticipants() {
+    ParticipantGrid(
+        participantUiStates = getTestParticipants(2),
+        eglBase = null,
+        isVoiceOnlyCall = false,
+        isInPipMode = false
+    ) {}
+}
+
+@Preview
+@Composable
+fun ThreeParticipants() {
+    ParticipantGrid(
+        participantUiStates = getTestParticipants(3),
+        eglBase = null,
+        isVoiceOnlyCall = false,
+        isInPipMode = false
+    ) {}
+}
+
+@Preview
+@Composable
+fun FourParticipants() {
+    ParticipantGrid(
+        participantUiStates = getTestParticipants(4),
+        eglBase = null,
+        isVoiceOnlyCall = false,
+        isInPipMode = false
+    ) {}
+}
+
+@Preview
+@Composable
+fun FiveParticipants() {
+    ParticipantGrid(
+        participantUiStates = getTestParticipants(5),
+        eglBase = null,
+        isVoiceOnlyCall = false,
+        isInPipMode = false
+    ) {}
+}
+
+@Preview
+@Composable
+fun SevenParticipants() {
+    ParticipantGrid(
+        participantUiStates = getTestParticipants(7),
+        eglBase = null,
+        isVoiceOnlyCall = false,
+        isInPipMode = false
+    ) {}
+}
+
+@Preview
+@Composable
+fun FiftyParticipants() {
+    ParticipantGrid(
+        participantUiStates = getTestParticipants(50),
+        eglBase = null,
+        isVoiceOnlyCall = false,
+        isInPipMode = false
+    ) {}
+}
+
+@Preview(
+    showBackground = false,
+    heightDp = 360,
+    widthDp = 800
+)
+@Composable
+fun OneParticipantLandscape() {
+    ParticipantGrid(
+        participantUiStates = getTestParticipants(1),
+        eglBase = null,
+        isVoiceOnlyCall = false,
+        isInPipMode = false
+    ) {}
+}
+
+@Preview(
+    showBackground = false,
+    heightDp = 360,
+    widthDp = 800
+)
+@Composable
+fun TwoParticipantsLandscape() {
+    ParticipantGrid(
+        participantUiStates = getTestParticipants(2),
+        eglBase = null,
+        isVoiceOnlyCall = false,
+        isInPipMode = false
+    ) {}
+}
+
+@Preview(
+    showBackground = false,
+    heightDp = 360,
+    widthDp = 800
+)
+@Composable
+fun ThreeParticipantsLandscape() {
+    ParticipantGrid(
+        participantUiStates = getTestParticipants(3),
+        eglBase = null,
+        isVoiceOnlyCall = false,
+        isInPipMode = false
+    ) {}
+}
+
+@Preview(
+    showBackground = false,
+    heightDp = 360,
+    widthDp = 800
+)
+@Composable
+fun FourParticipantsLandscape() {
+    ParticipantGrid(
+        participantUiStates = getTestParticipants(4),
+        eglBase = null,
+        isVoiceOnlyCall = false,
+        isInPipMode = false
+    ) {}
+}
+
+@Preview(
+    showBackground = false,
+    heightDp = 360,
+    widthDp = 800
+)
+@Composable
+fun SevenParticipantsLandscape() {
+    ParticipantGrid(
+        participantUiStates = getTestParticipants(7),
+        eglBase = null,
+        isVoiceOnlyCall = false,
+        isInPipMode = false
+    ) {}
+}
+
+@Preview(
+    showBackground = false,
+    heightDp = 360,
+    widthDp = 800
+)
+@Composable
+fun FiftyParticipantsLandscape() {
+    ParticipantGrid(
+        participantUiStates = getTestParticipants(50),
+        eglBase = null,
+        isVoiceOnlyCall = false,
+        isInPipMode = false
+    ) {}
+}
+
+fun getTestParticipants(numberOfParticipants: Int): List<ParticipantUiState> {
+    val participantList = mutableListOf<ParticipantUiState>()
+    for (i: Int in 1..numberOfParticipants) {
+        val participant = ParticipantUiState(
+            sessionKey = i.toString(),
+            nick = "test$i user",
+            isConnected = true,
+            isAudioEnabled = false,
+            isStreamEnabled = true,
+            raisedHand = true,
+            avatarUrl = "",
+            mediaStream = null
+        )
+        participantList.add(participant)
+    }
+    return participantList
+}

app/src/main/java/com/nextcloud/talk/call/components/ParticipantTile.kt

@@ -0,0 +1,144 @@
+/*
+ * Nextcloud Talk - Android Client
+ *
+ * SPDX-FileCopyrightText: 2025 Marcel Hibbe <dev@mhibbe.de>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package com.nextcloud.talk.call.components
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.BoxWithConstraints
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.Shadow
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.min
+import com.nextcloud.talk.R
+import com.nextcloud.talk.adapters.ParticipantUiState
+import com.nextcloud.talk.utils.ColorGenerator
+import org.webrtc.EglBase
+
+const val NICK_OFFSET = 4f
+const val NICK_BLUR_RADIUS = 4f
+const val AVATAR_SIZE_FACTOR = 0.6f
+
+@Suppress("Detekt.LongMethod")
+@Composable
+fun ParticipantTile(
+    participantUiState: ParticipantUiState,
+    eglBase: EglBase?,
+    modifier: Modifier = Modifier,
+    isVoiceOnlyCall: Boolean
+) {
+    val colorInt = ColorGenerator.shared.usernameToColor(participantUiState.nick)
+
+    BoxWithConstraints(
+        modifier = modifier
+            .clip(RoundedCornerShape(12.dp))
+            .background(Color(colorInt))
+    ) {
+        val avatarSize = min(maxWidth, maxHeight) * AVATAR_SIZE_FACTOR
+
+        if (!isVoiceOnlyCall && participantUiState.isStreamEnabled && participantUiState.mediaStream != null) {
+            WebRTCVideoView(participantUiState, eglBase)
+        } else {
+            AvatarWithFallback(
+                participant = participantUiState,
+                modifier = Modifier
+                    .size(avatarSize)
+                    .align(Alignment.Center)
+            )
+        }
+
+        Box(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(8.dp)
+        ) {
+            if (participantUiState.raisedHand) {
+                Icon(
+                    painter = painterResource(id = R.drawable.ic_hand_back_left),
+                    contentDescription = "Raised Hand",
+                    modifier = Modifier
+                        .align(Alignment.TopEnd)
+                        .padding(6.dp)
+                        .size(24.dp),
+                    tint = Color.White
+                )
+            }
+
+            if (!participantUiState.isAudioEnabled) {
+                Icon(
+                    painter = painterResource(id = R.drawable.ic_mic_off_white_24px),
+                    contentDescription = "Mic Off",
+                    modifier = Modifier
+                        .align(Alignment.BottomEnd)
+                        .padding(6.dp)
+                        .size(24.dp),
+                    tint = Color.White
+                )
+            }
+
+            Text(
+                text = participantUiState.nick,
+                color = Color.White,
+                modifier = Modifier
+                    .align(Alignment.BottomStart),
+                style = MaterialTheme.typography.bodyMedium.copy(
+                    shadow = Shadow(
+                        color = Color.Black,
+                        offset = Offset(NICK_OFFSET, NICK_OFFSET),
+                        blurRadius = NICK_BLUR_RADIUS
+                    )
+                )
+            )
+
+            if (!participantUiState.isConnected) {
+                CircularProgressIndicator(
+                    modifier = Modifier.align(Alignment.Center)
+                )
+            }
+        }
+    }
+}
+
+@Preview(showBackground = false)
+@Composable
+fun ParticipantTilePreview() {
+    val participant = ParticipantUiState(
+        sessionKey = "",
+        nick = "testuser one",
+        isConnected = true,
+        isAudioEnabled = false,
+        isStreamEnabled = true,
+        raisedHand = true,
+        avatarUrl = "",
+        mediaStream = null
+    )
+    ParticipantTile(
+        participantUiState = participant,
+        modifier = Modifier
+            .fillMaxWidth()
+            .height(300.dp),
+        eglBase = null,
+        isVoiceOnlyCall = false
+    )
+}

app/src/main/java/com/nextcloud/talk/call/components/WebRTCVideoView.kt

@@ -0,0 +1,35 @@
+/*
+ * Nextcloud Talk - Android Client
+ *
+ * SPDX-FileCopyrightText: 2025 Marcel Hibbe <dev@mhibbe.de>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package com.nextcloud.talk.call.components
+
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.viewinterop.AndroidView
+import com.nextcloud.talk.adapters.ParticipantUiState
+import org.webrtc.EglBase
+import org.webrtc.SurfaceViewRenderer
+
+@Composable
+fun WebRTCVideoView(participant: ParticipantUiState, eglBase: EglBase?) {
+    AndroidView(
+        factory = { context ->
+            SurfaceViewRenderer(context).apply {
+                init(eglBase?.eglBaseContext, null)
+                setEnableHardwareScaler(true)
+                setMirror(false)
+                participant.mediaStream?.videoTracks?.firstOrNull()?.addSink(this)
+            }
+        },
+        modifier = Modifier.fillMaxSize(),
+        onRelease = {
+            participant.mediaStream?.videoTracks?.firstOrNull()?.removeSink(it)
+            it.release()
+        }
+    )
+}

app/src/main/java/com/nextcloud/talk/utils/ColorGenerator.kt

@@ -0,0 +1,107 @@
+/*
+ * Nextcloud Talk - Android Client
+ *
+ * SPDX-FileCopyrightText: 2022 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2025 Marcel Hibbe <dev@mhibbe.de>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package com.nextcloud.talk.utils
+
+import android.graphics.Color
+import java.security.MessageDigest
+import kotlin.math.abs
+
+// See https://github.com/nextcloud/nextcloud-vue/blob/56b79afae93f4701a0cb933bfeb7b4a2fbd590fb/src/functions/usernameToColor/usernameToColor.js
+// and https://github.com/nextcloud/nextcloud-vue/blob/56b79afae93f4701a0cb933bfeb7b4a2fbd590fb/src/utils/GenColors.js
+
+@Suppress("MagicNumber")
+class ColorGenerator private constructor() {
+
+    private val steps = 6
+    private val finalPalette: List<Int> = genColors(steps)
+
+    companion object {
+        val shared = ColorGenerator()
+        private const val MULTIPLIER = 256.0f
+
+        private fun stepCalc(steps: Int, colorStart: Int, colorEnd: Int): List<Float> {
+            val r0 = Color.red(colorStart) / MULTIPLIER
+            val g0 = Color.green(colorStart) / MULTIPLIER
+            val b0 = Color.blue(colorStart) / MULTIPLIER
+
+            val r1 = Color.red(colorEnd) / MULTIPLIER
+            val g1 = Color.green(colorEnd) / MULTIPLIER
+            val b1 = Color.blue(colorEnd) / MULTIPLIER
+
+            return listOf(
+                (r1 - r0) / steps,
+                (g1 - g0) / steps,
+                (b1 - b0) / steps
+            )
+        }
+
+        private fun mixPalette(steps: Int, color1: Int, color2: Int): List<Int> {
+            val palette = mutableListOf(color1)
+            val step = stepCalc(steps, color1, color2)
+
+            val rStart = Color.red(color1) / MULTIPLIER
+            val gStart = Color.green(color1) / MULTIPLIER
+            val bStart = Color.blue(color1) / MULTIPLIER
+
+            for (i in 1 until steps) {
+                val r = (abs(rStart + step[0] * i) * MULTIPLIER).toInt().coerceIn(0, 255)
+                val g = (abs(gStart + step[1] * i) * MULTIPLIER).toInt().coerceIn(0, 255)
+                val b = (abs(bStart + step[2] * i) * MULTIPLIER).toInt().coerceIn(0, 255)
+
+                palette.add(Color.rgb(r, g, b))
+            }
+
+            return palette
+        }
+
+        fun genColors(steps: Int): List<Int> {
+            val red = Color.rgb(
+                (182 / MULTIPLIER * 255).toInt(),
+                (70 / MULTIPLIER * 255).toInt(),
+                (157 / MULTIPLIER * 255).toInt()
+            )
+            val yellow = Color.rgb(
+                (221 / MULTIPLIER * 255).toInt(),
+                (203 / MULTIPLIER * 255).toInt(),
+                (85 / MULTIPLIER * 255).toInt()
+            )
+            val blue = Color.rgb(
+                0,
+                (130 / MULTIPLIER * 255).toInt(),
+                (201 / MULTIPLIER * 255).toInt()
+            )
+
+            val palette1 = mixPalette(steps, red, yellow).toMutableList()
+            val palette2 = mixPalette(steps, yellow, blue)
+            val palette3 = mixPalette(steps, blue, red)
+
+            palette1.addAll(palette2)
+            palette1.addAll(palette3)
+
+            return palette1
+        }
+    }
+
+    fun usernameToColor(username: String): Int {
+        val hash = username.lowercase()
+        var hashInt: Int
+
+        val bytes = hash.toByteArray(Charsets.UTF_8)
+        val md = MessageDigest.getInstance("MD5")
+        val digest = md.digest(bytes)
+        val hex = digest.joinToString("") { "%02x".format(it) }
+
+        hashInt = hex.map { it.digitToInt(16) % 16 }.sum()
+
+        val maximum = steps * 3
+        hashInt %= maximum
+
+        return finalPalette[hashInt]
+    }
+}

app/src/main/java/com/nextcloud/talk/utils/message/MessageUtils.kt

@@ -9,13 +9,13 @@ package com.nextcloud.talk.utils.message
 import android.content.Context
 import android.content.Intent
 import android.graphics.Typeface
-import android.net.Uri
 import android.text.SpannableString
 import android.text.SpannableStringBuilder
 import android.text.Spanned
 import android.text.style.StyleSpan
 import android.util.Log
 import android.view.View
+import androidx.core.net.toUri
 import com.nextcloud.talk.R
 import com.nextcloud.talk.chat.data.model.ChatMessage
 import com.nextcloud.talk.ui.theme.ViewThemeUtils
@@ -145,7 +145,7 @@ class MessageUtils(val context: Context) {
 
                     "file" -> {
                         itemView?.setOnClickListener { v ->
-                            val browserIntent = Intent(Intent.ACTION_VIEW, Uri.parse(individualHashMap["link"]))
+                            val browserIntent = Intent(Intent.ACTION_VIEW, individualHashMap["link"]?.toUri())
                             context.startActivity(browserIntent)
                         }
                     }

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

@@ -33,15 +33,10 @@
             android:visibility="visible"
             tools:visibility="visible">
 
-            <GridView
-                android:id="@+id/gridview"
+            <androidx.compose.ui.platform.ComposeView
+                android:id="@+id/composeParticipantGrid"
                 android:layout_width="match_parent"
-                android:layout_height="match_parent"
-                android:gravity="center"
-                android:numColumns="2"
-                android:scrollbars="vertical"
-                android:stretchMode="columnWidth"
-                tools:listitem="@layout/call_item" />
+                android:layout_height="match_parent" />
 
             <FrameLayout
                 android:id="@+id/selfVideoViewWrapper"
@@ -327,7 +322,7 @@
     </LinearLayout>
 
     <RelativeLayout
-        android:id="@+id/pipSelfVideoOverlay"
+        android:id="@+id/pipOverlay"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:background="@color/black"
@@ -341,9 +336,8 @@
             android:layout_width="match_parent"
             android:layout_centerHorizontal="true"
             android:layout_marginStart="5dp"
-            android:layout_marginTop="40dp"
+            android:layout_marginTop="0dp"
             android:layout_marginEnd="5dp"
-            android:layout_marginBottom="-30dp"
             android:ellipsize="end"
             android:maxLines="3"
             android:textAlignment="center"

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

@@ -1,80 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~ Nextcloud Talk - Android Client
-  ~
-  ~ SPDX-FileCopyrightText: 2021 Andy Scherzinger <info@andy-scherzinger.de>
-  ~ SPDX-FileCopyrightText: 2021 Marcel Hibbe <dev@mhibbe.de>
-  ~ SPDX-FileCopyrightText: 2017 Mario Danic <mario@lovelyhq.com>
-  ~ SPDX-License-Identifier: GPL-3.0-or-later
--->
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/relative_layout"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:gravity="center"
-    android:orientation="vertical">
-
-    <ImageView
-        android:id="@+id/avatarImageView"
-        android:layout_width="80dp"
-        android:layout_height="80dp"
-        android:layout_centerInParent="true"
-        android:contentDescription="@string/avatar"/>
-
-    <org.webrtc.SurfaceViewRenderer
-        android:id="@+id/surface_view"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:visibility="invisible" />
-
-    <LinearLayout
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:orientation="horizontal"
-        android:layout_alignParentBottom="true">
-
-        <TextView
-            android:id="@+id/peer_nick_text_view"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="10dp"
-            android:layout_marginBottom="6dp"
-            android:ellipsize="end"
-            android:maxEms="8"
-            android:maxLines="1"
-            android:textAlignment="viewStart"
-            android:textColor="@color/white"
-            tools:text="Bill Murray 12345678901234567890" />
-
-        <ImageView
-            android:id="@+id/remote_audio_off"
-            android:layout_width="16dp"
-            android:layout_height="16dp"
-            android:layout_marginStart="10dp"
-            android:layout_marginBottom="6dp"
-            android:contentDescription="@string/nc_remote_audio_off"
-            android:src="@drawable/ic_mic_off_white_24px"
-            android:visibility="invisible"
-            tools:visibility="visible" />
-
-        <ImageView
-            android:id="@+id/raised_hand"
-            android:layout_width="16dp"
-            android:layout_height="16dp"
-            android:layout_marginStart="10dp"
-            android:layout_marginBottom="6dp"
-            android:contentDescription="@string/raise_hand"
-            android:src="@drawable/ic_hand_back_left"
-            android:visibility="invisible"
-            tools:visibility="visible" />
-    </LinearLayout>
-
-    <ProgressBar
-        android:id="@+id/participant_progress_bar"
-        style="?android:attr/progressBarStyle"
-        android:layout_width="@dimen/call_participant_progress_bar_size"
-        android:layout_height="@dimen/call_participant_progress_bar_size"
-        android:layout_centerInParent="@bool/value_true" />
-
-</RelativeLayout>

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

@@ -54,7 +54,6 @@
     <dimen name="dialog_padding">24dp</dimen>
     <dimen name="dialog_padding_top_bottom">18dp</dimen>
 
-    <dimen name="call_grid_item_min_height">180dp</dimen>
     <dimen name="call_controls_height">110dp</dimen>
     <dimen name="call_participant_progress_bar_size">48dp</dimen>
     <dimen name="call_self_participant_progress_bar_size">48dp</dimen>

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

@@ -175,7 +175,6 @@ How to translate with transifex:
 
     <string name="nc_settings_notifications_granted">Notifications are granted</string>
     <string name="nc_settings_notifications_declined">Notifications are declined</string>
-    <string name="nc_settings_notifications_declined_hint">Notifications are declined. Please allow notifications in Android settings</string>
 
     <!-- Diagnose -->
     <string name="nc_notifications_troubleshooting_dialog_title">Notification troubleshooting</string>
@@ -373,7 +372,6 @@ How to translate with transifex:
     <string name="dnd">Do not disturb</string>
     <string name="away">Away</string>
     <string name="invisible">Invisible</string>
-    <string name="divider" translatable="false">—</string>
     <string name="default_emoji" translatable="false">😃</string>
     <string name="emoji_thumbsUp" translatable="false">👍</string>
     <string name="emoji_thumbsDown" translatable="false">👎</string>
@@ -398,9 +396,6 @@ How to translate with transifex:
     <string name="error_loading_chats">There was a problem loading your chats</string>
     <string name="close">Close</string>
     <string name="close_icon">Close Icon</string>
-    <string name="nc_refresh">Refresh</string>
-    <string name="nc_check_your_internet">Please check your internet connection</string>
-    <string name="nc_visible">Visible</string>
 
     <!-- Chat -->
     <string name="nc_hint_enter_a_message">Enter a message …</string>
@@ -438,9 +433,7 @@ How to translate with transifex:
     <string name="nc_message_failed">Failed</string>
     <string name="nc_message_sending">Sending</string>
     <string name="nc_message_failed_to_send">Failed to send message:</string>
-    <string name="nc_remote_audio_off">Remote audio off</string>
     <string name="nc_add_attachment">Add attachment</string>
-    <string name="emoji_category_recent">Recent</string>
     <plurals name="see_similar_system_messages">
         <item quantity="one">See %d similar message</item>
         <item quantity="other">See %d similar messages</item>
@@ -461,7 +454,6 @@ How to translate with transifex:
     <string name="nc_guest_access_password_dialog_title">Guest access password</string>
     <string name="nc_guest_access_password_dialog_hint">Enter a password</string>
     <string name="nc_guest_access_password_failed">Error during setting/disabling the password.</string>
-    <string name="nc_guest_access_password_weak_alert_title">Weak password</string>
     <string name="nc_guest_access_share_link">Share conversation link</string>
     <string name="nc_guest_access_resend_invitations">Resend invitations</string>
     <string name="nc_guest_access_resend_invitations_successful">Invitations were sent out again.</string>
@@ -477,11 +469,8 @@ How to translate with transifex:
 
     <!-- Other -->
     <string name="nc_limit_hit">%s characters limit has been hit</string>
-    <string name="nc_email">Email</string>
     <string name="nc_group">Group</string>
     <string name="nc_team">Team</string>
-    <string name="nc_groups">Groups</string>
-    <string name="nc_teams">Teams</string>
     <string name="nc_participants">Participants</string>
     <string name="nc_participants_add">Add participants</string>
     <string name="nc_start_group_chat">Start group chat</string>