RemoteDesktopSession.cs

using System;
using System.Text;
using System.Threading.Tasks;
using Waher.Content.Xml;
using Waher.Events;
 
namespace Waher.Networking.XMPP.RDP
{
    public enum MouseButton
    {
        Left,
 
        Middle,
 
        Right
    }
 
    public class RemoteDesktopSession
    {
        private readonly string sessionId;
        private readonly string remoteJid;
        private readonly RemoteDesktopClient client;
        private RemoteDesktopSessionState state = RemoteDesktopSessionState.Starting;
        private ScreenInfo[] screens = new ScreenInfo[0];
        private string deviceName = string.Empty;
        private int bitsPerPixel = 0;
        private int left = 0;
        private int top = 0;
        private int width = 0;
        private int height = 0;
        private int tileSize = 0;
 
        public RemoteDesktopSession(string SessionId, string RemoteJid, RemoteDesktopClient Client)
        {
            this.sessionId = SessionId;
            this.remoteJid = RemoteJid;
            this.client = Client;
        }
 
        public string SessionId => this.sessionId;
 
        public string RemoteJid => this.remoteJid;
 
        public RemoteDesktopClient Client => this.client;
 
        public RemoteDesktopSessionState State => this.state;
 
        internal async Task SetState(RemoteDesktopSessionState value)
        {
            if (this.state != value)
            {
                this.state = value;
                await this.StateChanged.Raise(this, EventArgs.Empty);
            }
        }
 
        public event EventHandlerAsync StateChanged;
 
        public ScreenInfo[] Screens
        {
            get => this.screens;
            internal set => this.screens = value;
        }
 
        public int BitsPerPixel
        {
            get => this.bitsPerPixel;
            internal set => this.bitsPerPixel = value;
        }
 
        public int Left
        {
            get => this.left;
            internal set => this.left = value;
        }
 
        public int Top
        {
            get => this.top;
            internal set => this.top = value;
        }
 
        public int Width
        {
            get => this.width;
            internal set => this.width = value;
        }
 
        public int Height
        {
            get => this.height;
            internal set => this.height = value;
        }
 
        public int TileSize
        {
            get => this.tileSize;
            internal set => this.tileSize = value;
        }
 
        public string DeviceName
        {
            get => this.deviceName;
            internal set => this.deviceName = value;
        }
 
        internal void UpdateTile(int X, int Y, string TileBase64)
        {
            this.TileUpdated.Raise(this, new TileEventArgs(this, X, Y, TileBase64));
        }
 
        public event EventHandler<TileEventArgs> TileUpdated;
 
        internal Task ScanCompleted()
        {
            return this.ScanComplete.Raise(this, EventArgs.Empty);
        }
 
        public event EventHandlerAsync ScanComplete;
 
        public void MouseMoved(int X, int Y)
        {
            StringBuilder Xml = new StringBuilder();
 
            Xml.Append("<mouseMoved xmlns='");
            Xml.Append(RemoteDesktopClient.RemoteDesktopNamespace);
            Xml.Append("' sid='");
            Xml.Append(XML.Encode(this.sessionId));
            Xml.Append("' x='");
            Xml.Append(X.ToString());
            Xml.Append("' y='");
            Xml.Append(Y.ToString());
            Xml.Append("'/>");
 
            this.SendMessage(Xml.ToString());
        }
 
        private Task SendMessage(string Xml)
        {
            return this.client.E2E.SendMessage(this.client.Client, E2ETransmission.NormalIfNotE2E, QoSLevel.Unacknowledged, MessageType.Normal,
                string.Empty, this.remoteJid, Xml, string.Empty, string.Empty, string.Empty, string.Empty, string.Empty, null, null);
        }
 
        public void MouseDown(int X, int Y, MouseButton Button)
        {
            StringBuilder Xml = new StringBuilder();
 
            Xml.Append("<mouseDown xmlns='");
            Xml.Append(RemoteDesktopClient.RemoteDesktopNamespace);
            Xml.Append("' sid='");
            Xml.Append(XML.Encode(this.sessionId));
            Xml.Append("' x='");
            Xml.Append(X.ToString());
            Xml.Append("' y='");
            Xml.Append(Y.ToString());
            Xml.Append("' b='");
            Xml.Append(Button.ToString());
            Xml.Append("'/>");
 
            this.SendMessage(Xml.ToString());
        }
 
        public void MouseUp(int X, int Y, MouseButton Button)
        {
            StringBuilder Xml = new StringBuilder();
 
            Xml.Append("<mouseUp xmlns='");
            Xml.Append(RemoteDesktopClient.RemoteDesktopNamespace);
            Xml.Append("' sid='");
            Xml.Append(XML.Encode(this.sessionId));
            Xml.Append("' x='");
            Xml.Append(X.ToString());
            Xml.Append("' y='");
            Xml.Append(Y.ToString());
            Xml.Append("' b='");
            Xml.Append(Button.ToString());
            Xml.Append("'/>");
 
            this.SendMessage(Xml.ToString());
        }
 
        public void MouseWheel(int X, int Y, int Delta)
        {
            StringBuilder Xml = new StringBuilder();
 
            Xml.Append("<mouseWheel xmlns='");
            Xml.Append(RemoteDesktopClient.RemoteDesktopNamespace);
            Xml.Append("' sid='");
            Xml.Append(XML.Encode(this.sessionId));
            Xml.Append("' x='");
            Xml.Append(X.ToString());
            Xml.Append("' y='");
            Xml.Append(Y.ToString());
            Xml.Append("' d='");
            Xml.Append(Delta.ToString());
            Xml.Append("'/>");
 
            this.SendMessage(Xml.ToString());
        }
 
        public void KeyDown(int KeyCode)
        {
            StringBuilder Xml = new StringBuilder();
 
            Xml.Append("<keyDown xmlns='");
            Xml.Append(RemoteDesktopClient.RemoteDesktopNamespace);
            Xml.Append("' sid='");
            Xml.Append(XML.Encode(this.sessionId));
            Xml.Append("' key='");
            Xml.Append(KeyCode.ToString());
            Xml.Append("'/>");
 
            this.SendMessage(Xml.ToString());
        }
 
        public void KeyUp(int KeyCode)
        {
            StringBuilder Xml = new StringBuilder();
 
            Xml.Append("<keyUp xmlns='");
            Xml.Append(RemoteDesktopClient.RemoteDesktopNamespace);
            Xml.Append("' sid='");
            Xml.Append(XML.Encode(this.sessionId));
            Xml.Append("' key='");
            Xml.Append(KeyCode.ToString());
            Xml.Append("'/>");
 
            this.SendMessage(Xml.ToString());
        }
    }
}