Improve the look and feel of the picker

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

res/css/views/elements/_DesktopCapturerSourcePicker.scss

@@ -16,28 +16,8 @@ limitations under the License.
 
 .mx_desktopCapturerSourcePicker {
     overflow: hidden;
-}
 
-.mx_desktopCapturerSourcePicker_tabLabels {
+    .mx_desktopCapturerSourcePicker_tab {
-    display: flex;
-    padding: 0 0 8px 0;
-}
-
-.mx_desktopCapturerSourcePicker_tabLabel,
-.mx_desktopCapturerSourcePicker_tabLabel_selected {
-    width: 100%;
-    text-align: center;
-    border-radius: 8px;
-    padding: 8px 0;
-    font-size: $font-13px;
-}
-
-.mx_desktopCapturerSourcePicker_tabLabel_selected {
-    background-color: $tab-label-active-bg-color;
-    color: $tab-label-active-fg-color;
-}
-
-.mx_desktopCapturerSourcePicker_panel {
         display: flex;
         flex-wrap: wrap;
         justify-content: center;
@@ -46,28 +26,32 @@ limitations under the License.
         overflow: overlay;
     }
 
-.mx_desktopCapturerSourcePicker_stream_button {
+    .mx_desktopCapturerSourcePicker_source {
         display: flex;
         flex-direction: column;
         margin: 8px;
-    border-radius: 4px;
     }
 
-.mx_desktopCapturerSourcePicker_stream_button_selected,
+    .mx_desktopCapturerSourcePicker_source_thumbnail {
-.mx_desktopCapturerSourcePicker_stream_button:hover,
-.mx_desktopCapturerSourcePicker_stream_button:focus {
-    background: $roomtile-selected-bg-color;
-}
-
-.mx_desktopCapturerSourcePicker_stream_thumbnail {
         margin: 4px;
         width: 312px;
+        border-width: 2px;
+        border-radius: 8px;
+        border-style: solid;
+        border-color: transparent;
+
+        &.mx_desktopCapturerSourcePicker_source_thumbnail_selected,
+        &:hover,
+        &:focus {
+            border-color: $accent-color;
+        }
     }
 
-.mx_desktopCapturerSourcePicker_stream_name {
+    .mx_desktopCapturerSourcePicker_source_name {
         margin: 0 4px;
         white-space: nowrap;
         text-overflow: ellipsis;
         overflow: hidden;
         width: 312px;
     }
+}

src/components/views/elements/DesktopCapturerSourcePicker.tsx

@@ -51,22 +51,22 @@ export class ExistingSource extends React.Component<ExistingSourceIProps> {
     };
 
     render() {
-        const classes = classNames({
+        const thumbnailClasses = classNames({
-            mx_desktopCapturerSourcePicker_stream_button: true,
+            mx_desktopCapturerSourcePicker_source_thumbnail: true,
-            mx_desktopCapturerSourcePicker_stream_button_selected: this.props.selected,
+            mx_desktopCapturerSourcePicker_source_thumbnail_selected: this.props.selected,
         });
 
         return (
             <AccessibleButton
-                className={classes}
+                className="mx_desktopCapturerSourcePicker_source"
                 title={this.props.source.name}
                 onClick={this.onClick}
             >
                 <img
-                    className="mx_desktopCapturerSourcePicker_stream_thumbnail"
+                    className={thumbnailClasses}
                     src={this.props.source.thumbnailURL}
                 />
-                <span className="mx_desktopCapturerSourcePicker_stream_name">{this.props.source.name}</span>
+                <span className="mx_desktopCapturerSourcePicker_source_name">{this.props.source.name}</span>
             </AccessibleButton>
         );
     }
@@ -147,7 +147,7 @@ export default class DesktopCapturerSourcePicker extends React.Component<
         });
 
         return new Tab(type, label, null, (
-            <div className="mx_desktopCapturerSourcePicker_panel">
+            <div className="mx_desktopCapturerSourcePicker_tab">
                 { sources }
             </div>
         ));