//

// Copyright (C) 2014-2015 Stéphane Lenclud.

//

// This file is part of SharpLibHid.

//

// SharpDisplayManager is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// SharpDisplayManager is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with SharpDisplayManager.  If not, see <http://www.gnu.org/licenses/>.

//

using System;

using System.Drawing;

using System.Collections;

using System.ComponentModel;

using System.Windows.Forms;

using System.Data;

using System.Diagnostics;

using System.Runtime.InteropServices;

using Hid = SharpLib.Hid;

using SharpLib.Win32;

namespace HidDemo

{

	/// <summary>

	/// MainForm for our HID demo.

	/// </summary>

	public partial class MainForm : System.Windows.Forms.Form

	{

        private Hid.Handler iHidHandler;

        public delegate void OnHidEventDelegate(object aSender, Hid.Event aHidEvent);

		public MainForm()

		{

			// Required for Windows Form Designer support

			InitializeComponent();           

		}

		/// <summary>

		/// The main entry point for the application.

		/// </summary>

		[STAThread]

		static void Main()

		{

            Application.EnableVisualStyles();

			Application.Run(new MainForm());

		}

        private void MainForm_Load(object sender, System.EventArgs e)

        {

            RegisterHidDevices();

            //Create our list of HID devices

            SharpLib.Win32.RawInput.PopulateDeviceList(treeViewDevices);

		}

	    void RegisterHidDevices()

	    {           

            // Register the input device to receive the commands from the

            // remote device. See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwmt/html/remote_control.asp

            // for the vendor defined usage page.

            if (iHidHandler!=null)

            {

                //First de-register

                iHidHandler.Dispose();

                iHidHandler = null;

            }

            RAWINPUTDEVICE[] rid = new RAWINPUTDEVICE[5];

            int i = 0;

            rid[i].usUsagePage = (ushort)SharpLib.Hid.UsagePage.WindowsMediaCenterRemoteControl;

            rid[i].usUsage = (ushort)SharpLib.Hid.UsageCollection.WindowsMediaCenter.WindowsMediaCenterRemoteControl;

            rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;

            rid[i].hwndTarget = Handle;

            i++;

            rid[i].usUsagePage = (ushort)SharpLib.Hid.UsagePage.Consumer;

            rid[i].usUsage = (ushort)SharpLib.Hid.UsageCollection.Consumer.ConsumerControl;

            rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;

            rid[i].hwndTarget = Handle;

            i++;

            rid[i].usUsagePage = (ushort)SharpLib.Hid.UsagePage.Consumer;

            rid[i].usUsage = (ushort)SharpLib.Hid.UsageCollection.Consumer.Selection;

            rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;

            rid[i].hwndTarget = Handle;

            i++;

            rid[i].usUsagePage = (ushort)SharpLib.Hid.UsagePage.GenericDesktopControls;

            rid[i].usUsage = (ushort)SharpLib.Hid.UsageCollection.GenericDesktop.SystemControl;

            rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;

            rid[i].hwndTarget = Handle;

            i++;

            rid[i].usUsagePage = (ushort)SharpLib.Hid.UsagePage.GenericDesktopControls;

            rid[i].usUsage = (ushort)SharpLib.Hid.UsageCollection.GenericDesktop.GamePad;

            rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;

            rid[i].hwndTarget = Handle;

            //i++;

            //rid[i].usUsagePage = (ushort)SharpLib.Hid.UsagePage.GenericDesktopControls;

            //rid[i].usUsage = (ushort)SharpLib.Hid.UsageCollection.GenericDesktop.Keyboard;

            //rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;

            //rid[i].hwndTarget = Handle;

            //i++;

            //rid[i].usUsagePage = (ushort)Hid.UsagePage.GenericDesktopControls;

            //rid[i].usUsage = (ushort)Hid.UsageCollection.GenericDesktop.Mouse;

            //rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;

            //rid[i].hwndTarget = aHWND;

            iHidHandler = new SharpLib.Hid.Handler(rid, checkBoxRepeat.Checked);

            if (!iHidHandler.IsRegistered)

            {

                Debug.WriteLine("Failed to register raw input devices: " + Marshal.GetLastWin32Error().ToString());

            }

            iHidHandler.OnHidEvent += HandleHidEventThreadSafe;

	    }

        public void HandleHidEventThreadSafe(object aSender, SharpLib.Hid.Event aHidEvent)

        {

            if (aHidEvent.IsStray)

            {

                //Stray event just ignore it

                return;

            }

            if (this.InvokeRequired)

            {

                //Not in the proper thread, invoke ourselves

                OnHidEventDelegate d = new OnHidEventDelegate(HandleHidEventThreadSafe);

                this.Invoke(d, new object[] { aSender, aHidEvent });

            }

            else

            {

                //We are in the proper thread

                listViewEvents.Items.Insert(0, aHidEvent.ToListViewItem());

                toolStripStatusLabelDevice.Text = aHidEvent.Device.FriendlyName;

            }

        }

		protected override void WndProc(ref Message message)

		{

            switch (message.Msg)

            {

                case Const.WM_KEYDOWN:

                    //ProcessKeyDown(message.WParam);

                    break;

                case Const.WM_INPUT:

                    //Returning zero means we processed that message.

                    message.Result = new IntPtr(0);

                    iHidHandler.ProcessInput(ref message);

                    break;

            }

            //Is that needed? Check the docs.

			base.WndProc(ref message);

		}

		private void buttonClear_Click(object sender, EventArgs e)

		{

			listViewEvents.Items.Clear();

		}

        private void buttonTreeViewCollapseAll_Click(object sender, EventArgs e)

        {

            treeViewDevices.CollapseAll();            

        }

        private void buttonTreeViewExpandAll_Click(object sender, EventArgs e)

        {

            treeViewDevices.ExpandAll();

        }

        private void buttonRefresh_Click(object sender, EventArgs e)

        {

            treeViewDevices.Nodes.Clear();

            SharpLib.Win32.RawInput.PopulateDeviceList(treeViewDevices);

        }

        private void checkBoxRepeat_CheckedChanged(object sender, EventArgs e)

        {

            RegisterHidDevices();

        }

	}

}