Start to request screen sharing

assets/js/common/utils.js

@@ -791,4 +791,31 @@ function IsFullScreen(){
  */
 function checkEmojiCode(s) {
 	return s.match(/^:[a-zA-Z0-9]+:$/) != null
+}
+
+/**
+ * Request user screen as stream
+ * 
+ * @return {Promise<MediaStream>}
+ */
+function requestUserScreen() {
+	return new Promise((onSuccess, onFailure) => {
+		getScreenId(function (error, sourceId, screen_constraints) {
+			
+			if(error != null)
+				return onFailure(error)
+			
+			// error    == null || 'permission-denied' || 'not-installed' || 'installed-disabled' || 'not-chrome'
+			// sourceId == null || 'string' || 'firefox'
+			
+			if(navigator.getDisplayMedia) {
+				navigator.getDisplayMedia(screen_constraints).then(onSuccess, onFailure);
+			}
+			else {
+				navigator.mediaDevices.getUserMedia(screen_constraints).then(onSuccess).catch(onFailure);
+			}
+		
+		});
+	})
+	
 }

assets/js/components/calls/window.js

@@ -254,6 +254,9 @@ class CallWindow extends CustomEvents {
 			// Parse list of menu entries
 			for(const entry of menuEntries) {
 
+				if(entry.needVideo && !this.allowVideo)
+					continue
+
 				const a = createElem2({
 					appendTo: menuEntriesTarget,
 					type: "li",
@@ -666,14 +669,33 @@ class CallWindow extends CustomEvents {
 	 * Start to send this client audio & video
 	 * 
 	 * @param {boolean} includeVideo
+	 * @param {boolean} shareScreen
 	 */
-	async startStreaming(includeVideo) {
+	async startStreaming(includeVideo, shareScreen = false) {
 
-		// First, query user media
-		const stream = await navigator.mediaDevices.getUserMedia({
-			video: this.conv.can_have_video_call && includeVideo,
-			audio: true
-		})
+		let videoConstraints = this.conv.can_have_video_call && includeVideo;
+
+		let stream;
+
+		// Get user screen
+		if(includeVideo && shareScreen) {
+			stream = await requestUserScreen(true)
+
+			const second_stream = await navigator.mediaDevices.getUserMedia({
+				audio: true
+			})
+
+			stream.addTrack(second_stream.getAudioTracks()[0])
+		}
+
+		// Use regular webcam
+		else {
+			// First, query user media
+			stream = await navigator.mediaDevices.getUserMedia({
+				video: videoConstraints,
+				audio: true,
+			})
+		}
 		this.mainStream = stream;
 
 		if(includeVideo)