Show raise hand on each particpiant.

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/CallParticipantView.java

@@ -6,6 +6,7 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Button;
 import android.widget.ImageView;
+import android.widget.TextView;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
@@ -36,6 +37,7 @@ import org.thoughtcrime.securesms.mms.GlideApp;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.recipients.RecipientId;
 import org.thoughtcrime.securesms.util.AvatarUtil;
+import org.thoughtcrime.securesms.util.FeatureFlags;
 import org.thoughtcrime.securesms.util.ViewUtil;
 import org.webrtc.RendererCommon;
 import org.whispersystems.signalservice.api.util.Preconditions;
@@ -57,6 +59,7 @@ public class CallParticipantView extends ConstraintLayout {
 
   private RecipientId recipientId;
   private boolean     infoMode;
+  private boolean     raiseHandAllowed;
   private Runnable    missingMediaKeysUpdater;
 
   private SelfPipMode selfPipMode = SelfPipMode.NOT_SELF_PIP;
@@ -76,6 +79,8 @@ public class CallParticipantView extends ConstraintLayout {
   private AppCompatImageView  infoIcon;
   private View                switchCameraIconFrame;
   private View                switchCameraIcon;
+  private ImageView           raiseHandIcon;
+  private TextView            nameLabel;
 
   public CallParticipantView(@NonNull Context context) {
     super(context);
@@ -108,6 +113,8 @@ public class CallParticipantView extends ConstraintLayout {
     pipBadge              = findViewById(R.id.call_participant_item_pip_badge);
     switchCameraIconFrame = findViewById(R.id.call_participant_switch_camera);
     switchCameraIcon      = findViewById(R.id.call_participant_switch_camera_icon);
+    raiseHandIcon         = findViewById(R.id.call_participant_raise_hand_icon);
+    nameLabel             = findViewById(R.id.call_participant_name_label);
 
     avatar.setFallbackPhotoProvider(FALLBACK_PHOTO_PROVIDER);
     useLargeAvatar();
@@ -172,6 +179,15 @@ public class CallParticipantView extends ConstraintLayout {
 
       audioIndicator.setVisibility(View.VISIBLE);
       audioIndicator.bind(participant.isMicrophoneEnabled(), participant.getAudioLevel());
+      final String shortRecipientDisplayName = participant.getShortRecipientDisplayName(getContext());
+      if (FeatureFlags.groupCallRaiseHand() && raiseHandAllowed && participant.isHandRaised()) {
+        raiseHandIcon.setVisibility(View.VISIBLE);
+        nameLabel.setVisibility(View.VISIBLE);
+        nameLabel.setText(shortRecipientDisplayName);
+      } else {
+        raiseHandIcon.setVisibility(View.GONE);
+        nameLabel.setVisibility(View.GONE);
+      }
     }
 
     if (participantChanged || !Objects.equals(contactPhoto, participant.getRecipient().getContactPhoto())) {
@@ -219,6 +235,10 @@ public class CallParticipantView extends ConstraintLayout {
     pipBadge.setVisibility(shouldRenderInPip ? View.VISIBLE : View.GONE);
   }
 
+  public void setRaiseHandAllowed(boolean raiseHandAllowed) {
+    this.raiseHandAllowed = raiseHandAllowed;
+  }
+
   /**
    * Adjust UI elements for the various self PIP positions. If called after a {@link TransitionManager#beginDelayedTransition(ViewGroup, Transition)},
    * the changes to the UI elements will animate.

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/CallParticipantsLayout.java

@@ -28,6 +28,7 @@ public class CallParticipantsLayout extends FlexboxLayout {
 
   private static final int MULTIPLE_PARTICIPANT_SPACING = ViewUtil.dpToPx(3);
   private static final int CORNER_RADIUS                = ViewUtil.dpToPx(10);
+  private static final int RAISE_HAND_MINIMUM_COUNT     = 2;
 
   private List<CallParticipant> callParticipants   = Collections.emptyList();
   private CallParticipant       focusedParticipant = null;
@@ -145,6 +146,8 @@ public class CallParticipantsLayout extends FlexboxLayout {
       callParticipantView.useLargeAvatar();
     }
 
+    callParticipantView.setRaiseHandAllowed(count >= RAISE_HAND_MINIMUM_COUNT);
+
     layoutStrategy.setChildLayoutParams(view, index, getChildCount());
   }
 

app/src/main/java/org/thoughtcrime/securesms/components/webrtc/WebRtcCallParticipantsPagerAdapter.java

@@ -112,6 +112,7 @@ class WebRtcCallParticipantsPagerAdapter extends ListAdapter<WebRtcCallParticipa
       CallParticipant participant = page.getCallParticipants().get(0);
       callParticipantView.setCallParticipant(participant);
       callParticipantView.setRenderInPip(page.isRenderInPip());
+      callParticipantView.setRaiseHandAllowed(false);
       if (participant.isScreenSharing()) {
         callParticipantView.setScalingType(RendererCommon.ScalingType.SCALE_ASPECT_FIT);
       } else {

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

@@ -159,4 +159,34 @@
 
     </LinearLayout>
 
+    <androidx.appcompat.widget.AppCompatImageView
+        android:id="@+id/call_participant_raise_hand_icon"
+        android:layout_width="40dp"
+        android:layout_height="40dp"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        android:background="@drawable/circle_tintable"
+        android:backgroundTint="@color/signal_light_colorSurface"
+        android:scaleType="centerInside"
+        android:visibility="gone"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:srcCompat="@drawable/symbol_raise_hand_24"
+        tools:visibility="visible" />
+
+    <TextView
+        android:id="@+id/call_participant_name_label"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:textAppearance="@style/TextAppearance.Signal.Body2"
+        android:textColor="@color/signal_light_colorOnPrimary"
+        android:textSize="14sp"
+        android:visibility="gone"
+        app:layout_constraintBottom_toBottomOf="@id/call_participant_raise_hand_icon"
+        app:layout_constraintStart_toEndOf="@id/call_participant_raise_hand_icon"
+        app:layout_constraintTop_toTopOf="@id/call_participant_raise_hand_icon"
+        tools:text="Alice"
+        tools:visibility="visible" />
+
 </org.thoughtcrime.securesms.components.webrtc.CallParticipantView>