feat: add bottom gradient

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

 
 import React from 'react';
 import { NativeModules, SafeAreaView, StatusBar, View } from 'react-native';
+import LinearGradient from 'react-native-linear-gradient';
 
 import { appNavigate } from '../../../app';
 import { PIP_ENABLED, getFeatureFlag } from '../../../base/flags';
 } from '../AbstractConference';
 import Labels from './Labels';
 import NavigationBar from './NavigationBar';
-import styles from './styles';
+import styles, { NAVBAR_GRADIENT_COLORS } from './styles';
 
 import type { AbstractProps } from '../AbstractConference';
 
     render() {
         const {
             _connecting,
+            _filmstripVisible,
             _largeVideoParticipantId,
             _reducedUI,
-            _shouldDisplayTileView
+            _shouldDisplayTileView,
+            _toolboxVisible
         } = this.props;
+        const showGradient = _toolboxVisible;
+        const applyGradientStretching = _filmstripVisible && isNarrowAspectRatio(this) && !_shouldDisplayTileView;
 
         return (
             <Container style = { styles.conference }>
                     pointerEvents = 'box-none'
                     style = { styles.toolboxAndFilmstripContainer }>
 
+                    { showGradient && <LinearGradient
+                        colors = { NAVBAR_GRADIENT_COLORS }
+                        end = {{
+                            x: 0.0,
+                            y: 0.0
+                        }}
+                        pointerEvents = 'none'
+                        start = {{
+                            x: 0.0,
+                            y: applyGradientStretching ? 0.5 : 1.0
+                        }}
+                        style = { [
+                            styles.bottomGradient,
+                            applyGradientStretching ? styles.gradientStretchBottom : undefined
+                        ] } />}
+
                     <Labels />
 
                     <Captions onPress = { this._onClick } />
                     { _shouldDisplayTileView || <DisplayNameLabel participantId = { _largeVideoParticipantId } /> }
 
                     {/*
-                      * The Toolbox is in a stacking layer bellow the Filmstrip.
+                      * The Toolbox is in a stacking layer below the Filmstrip.
                       */}
                     <Toolbox />
 

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

-import {
-    BoxModel,
-    ColorPalette,
-    createStyleSheet,
-    fixAndroidViewClipping
-} from '../../../base/styles';
+import { BoxModel, ColorPalette, fixAndroidViewClipping } from '../../../base/styles';
 
 import { FILMSTRIP_SIZE } from '../../../filmstrip';
 
-export const NAVBAR_GRADIENT_COLORS = [ 'black', '#00000000' ];
+export const NAVBAR_GRADIENT_COLORS = [ '#0000007F', '#00000000' ];
+
+// From brand guideline
+const GRADIENT_HEIGHT = 116;
 
 /**
  * The styles of the feature conference.
  */
-export default createStyleSheet({
+export default {
+
+    bottomGradient: {
+        bottom: 0,
+        flexDirection: 'column',
+        justifyContent: 'flex-end',
+        minHeight: GRADIENT_HEIGHT,
+        left: 0,
+        position: 'absolute',
+        right: 0
+    },
+
     /**
      * {@code Conference} style.
      */
         flex: 1
     },
 
+    gradientStretchBottom: {
+        height: GRADIENT_HEIGHT + FILMSTRIP_SIZE
+    },
+
     gradientStretch: {
-        height: 116
+        height: GRADIENT_HEIGHT
     },
 
     /**
      * the {@link Toolbox}.
      */
     toolboxAndFilmstripContainer: {
-        bottom: BoxModel.margin,
+        bottom: 0,
         flexDirection: 'column',
         justifyContent: 'flex-end',
         left: 0,
+        paddingBottom: BoxModel.padding,
         position: 'absolute',
         right: 0,
 
         // not enough.
         top: BoxModel.margin * 3
     }
-});
+};