[RN] Add display name to on-stage participant

react/features/conference/components/Conference.native.js

@@ -27,6 +27,7 @@ import { Captions } from '../../subtitles';
 import { setToolboxVisible, Toolbox } from '../../toolbox';
 import { shouldDisplayTileView } from '../../video-layout';
 
+import DisplayNameLabel from './DisplayNameLabel';
 import styles from './styles';
 
 /**
@@ -283,6 +284,8 @@ class Conference extends Component<Props> {
 
                     <Captions onPress = { this._onClick } />
 
+                    <DisplayNameLabel />
+
                     {/*
                       * The Toolbox is in a stacking layer bellow the Filmstrip.
                       */}

react/features/conference/components/DisplayNameLabel.native.js

@@ -0,0 +1,79 @@
+// @flow
+
+import React, { Component } from 'react';
+import { Text, View } from 'react-native';
+import { connect } from 'react-redux';
+
+import {
+    getLocalParticipant,
+    getParticipantDisplayName,
+    shouldRenderParticipantVideo
+} from '../../base/participants';
+
+import { shouldDisplayTileView } from '../../video-layout';
+
+import styles from './styles';
+
+type Props = {
+
+    /**
+     * The name of the participant to render.
+     */
+    _participantName: string,
+
+    /**
+     * True of the label needs to be rendered. False otherwise.
+     */
+    _render: boolean
+}
+
+/**
+ * Renders a label with the display name of the on-stage participant.
+ */
+class DisplayNameLabel extends Component<Props> {
+    /**
+     * Implements {@code Component#render}.
+     *
+     * @inheritdoc
+     */
+    render() {
+        if (!this.props._render) {
+            return null;
+        }
+
+        return (
+            <View style = { styles.displayNameBackdrop }>
+                <Text style = { styles.displayNameText }>
+                    { this.props._participantName }
+                </Text>
+            </View>
+        );
+    }
+}
+
+/**
+ * Maps part of the Redux state to the props of this component.
+ *
+ * @param {Object} state - The Redux state.
+ * @returns {{
+ * }}
+ */
+function _mapStateToProps(state: Object) {
+    const largeVideoParticipantId = state['features/large-video'].participantId;
+    const localParticipant = getLocalParticipant(state);
+
+    // Currently we only render the display name if it's not the local
+    // participant, we're not in tile view and there is no video rendered for
+    // the on-stage participant.
+    const _render = localParticipant.id !== largeVideoParticipantId
+        && !shouldDisplayTileView(state)
+        && !shouldRenderParticipantVideo(state, largeVideoParticipantId);
+
+    return {
+        _participantName:
+            getParticipantDisplayName(state, largeVideoParticipantId),
+        _render
+    };
+}
+
+export default connect(_mapStateToProps)(DisplayNameLabel);

react/features/conference/components/styles.js

@@ -18,6 +18,20 @@ export default createStyleSheet({
         flex: 1
     }),
 
+    displayNameBackdrop: {
+        alignSelf: 'center',
+        backgroundColor: 'rgba(28, 32, 37, 0.6)',
+        borderRadius: 4,
+        margin: 16,
+        paddingHorizontal: 16,
+        paddingVertical: 4
+    },
+
+    displayNameText: {
+        color: ColorPalette.white,
+        fontSize: 14
+    },
+
     /**
      * The style of the {@link View} which expands over the whole
      * {@link Conference} area and splits it between the {@link Filmstrip} and