//--------------------------------------------------------------------------------------
// File: DXMUTMisc.cs
//
// Shortcut and helper functions for using DX Code
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//--------------------------------------------------------------------------------------
using System;
using System.IO;
using System.Collections;
using System.Runtime.InteropServices;
using Microsoft.DirectX;
using Microsoft.DirectX.Direct3D;

namespace Microsoft.Samples.DirectX.UtilityToolkit
{
    #region RefWarningDialog Form
    internal class SwitchRefDialog : System.Windows.Forms.Form
    {
        internal const string KeyLocation = @"Software\Microsoft\DirectX 9.0 SDK\ManagedSamples";
        internal const string KeyValueName = "SkipWarning";

        public SwitchRefDialog(string title)
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();

            // Use the 'question' icon
            this.pictureBox1.Image = System.Drawing.SystemIcons.Question.ToBitmap();
            // Include text
            this.lblInfo.Text = "Switching to the Direct3D reference rasterizer, a software device that implements the entire Direct3D feature set, but runs very slowly.\r\nDo you wish to continue?";
            // UPdate title
            this.Text = title;
        }

        #region Windows Form Designer generated code
        private System.Windows.Forms.PictureBox pictureBox1;
        private System.Windows.Forms.Label lblInfo;
        private System.Windows.Forms.CheckBox chkShowAgain;
        private System.Windows.Forms.Button btnYes;
        private System.Windows.Forms.Button btnNo;
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.pictureBox1 = new System.Windows.Forms.PictureBox();
            this.lblInfo = new System.Windows.Forms.Label();
            this.chkShowAgain = new System.Windows.Forms.CheckBox();
            this.btnYes = new System.Windows.Forms.Button();
            this.btnNo = new System.Windows.Forms.Button();
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.SuspendLayout();
            // 
            // pictureBox1
            // 
            this.pictureBox1.Location = new System.Drawing.Point(16, 16);
            this.pictureBox1.Name = "pictureBox1";
            this.pictureBox1.Size = new System.Drawing.Size(32, 32);
            this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.AutoSize;
            this.pictureBox1.TabIndex = 0;
            this.pictureBox1.TabStop = false;
            // 
            // lblInfo
            // 
            this.lblInfo.FlatStyle = System.Windows.Forms.FlatStyle.System;
            this.lblInfo.Location = new System.Drawing.Point(64, 16);
            this.lblInfo.Name = "lblInfo";
            this.lblInfo.Size = new System.Drawing.Size(328, 48);
            this.lblInfo.TabIndex = 99;
            // 
            // chkShowAgain
            // 
            this.chkShowAgain.FlatStyle = System.Windows.Forms.FlatStyle.System;
            this.chkShowAgain.Location = new System.Drawing.Point(8, 104);
            this.chkShowAgain.Name = "chkShowAgain";
            this.chkShowAgain.Size = new System.Drawing.Size(224, 16);
            this.chkShowAgain.TabIndex = 2;
            this.chkShowAgain.Text = "&Don\'t show again";
            // 
            // btnYes
            // 
            this.btnYes.DialogResult = System.Windows.Forms.DialogResult.OK;
            this.btnYes.FlatStyle = System.Windows.Forms.FlatStyle.System;
            this.btnYes.Location = new System.Drawing.Point(117, 72);
            this.btnYes.Name = "btnYes";
            this.btnYes.Size = new System.Drawing.Size(80, 24);
            this.btnYes.TabIndex = 0;
            this.btnYes.Text = "&Yes";
            this.btnYes.Click += new EventHandler(OnYes);
            // 
            // btnNo
            // 
            this.btnNo.DialogResult = System.Windows.Forms.DialogResult.Cancel;
            this.btnNo.FlatStyle = System.Windows.Forms.FlatStyle.System;
            this.btnNo.Location = new System.Drawing.Point(205, 72);
            this.btnNo.Name = "btnNo";
            this.btnNo.Size = new System.Drawing.Size(80, 24);
            this.btnNo.TabIndex = 1;
            this.btnNo.Text = "&No";
            this.btnNo.Click += new EventHandler(OnNo);
            // 
            // SwitchRefDialog
            // 
            this.AcceptButton = this.btnYes;
            this.CancelButton = this.btnNo;
            this.ClientSize = new System.Drawing.Size(402, 134);
            this.Controls.Add(this.btnNo);
            this.Controls.Add(this.btnYes);
            this.Controls.Add(this.chkShowAgain);
            this.Controls.Add(this.lblInfo);
            this.Controls.Add(this.pictureBox1);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
            this.Name = "SwitchRefDialog";
            this.Text = "SampleName";
            this.ResumeLayout(false);

        }
        /// <summary>
        /// Fired when the 'Yes' button is clicked
        /// </summary>
        private void OnYes(object sender, EventArgs e)
        {
            this.DialogResult = System.Windows.Forms.DialogResult.OK;
            this.Close();
        }
        /// <summary>
        /// Fired when the 'No' button is clicked
        /// </summary>
        private void OnNo(object sender, EventArgs e)
        {
            this.DialogResult = System.Windows.Forms.DialogResult.Cancel;
            this.Close();
        }
        #endregion

        /// <summary>
        /// Dialog is being dismissed, either continue the application, or shutdown.  
        /// Save setting if required.
        /// </summary>
        protected override void OnClosed(EventArgs e)
        {
            // Is the box checked?
            if (chkShowAgain.Checked)
            {
                using(Microsoft.Win32.RegistryKey key = Microsoft.Win32.Registry.CurrentUser.CreateSubKey(KeyLocation))
                {
                    key.SetValue(KeyValueName, (int)1);
                }
            }
        }
    }
    #endregion

    #region Native Methods
    /// <summary>
    /// Will hold native methods which are interop'd
    /// </summary>
    public class NativeMethods
    {
        #region Win32 User Messages / Structures

        /// <summary>Window messages</summary>
        public enum WindowMessage : uint
        {
            // Misc messages
            Destroy = 0x0002,
            Close = 0x0010,
            Quit = 0x0012,
            Paint = 0x000F,
            SetCursor = 0x0020,
            ActivateApplication = 0x001C,
            EnterMenuLoop = 0x0211,
            ExitMenuLoop = 0x0212,
            NonClientHitTest = 0x0084,
            PowerBroadcast = 0x0218,
            SystemCommand = 0x0112,
            GetMinMax = 0x0024,

            // Keyboard messages
            KeyDown = 0x0100,
            KeyUp = 0x0101,
            Character = 0x0102,
            SystemKeyDown = 0x0104,
            SystemKeyUp = 0x0105,
            SystemCharacter = 0x0106,

            // Mouse messages
            MouseMove = 0x0200,
            LeftButtonDown = 0x0201,
            LeftButtonUp = 0x0202,
            LeftButtonDoubleClick = 0x0203,
            RightButtonDown = 0x0204,
            RightButtonUp = 0x0205,
            RightButtonDoubleClick = 0x0206,
            MiddleButtonDown = 0x0207,
            MiddleButtonUp = 0x0208,
            MiddleButtonDoubleClick = 0x0209,
            MouseWheel = 0x020a,
            XButtonDown = 0x020B,
            XButtonUp = 0x020c,
            XButtonDoubleClick = 0x020d,
            MouseFirst = LeftButtonDown, // Skip mouse move, it happens a lot and there is another message for that
            MouseLast = XButtonDoubleClick,

            // Sizing
            EnterSizeMove = 0x0231,
            ExitSizeMove = 0x0232,
            Size = 0x0005,

        }

        /// <summary>Mouse buttons</summary>
        public enum MouseButtons
        {
            Left = 0x0001,
            Right = 0x0002,
            Middle = 0x0010,
            Side1 = 0x0020,
            Side2 = 0x0040,
        }

        /// <summary>Windows Message</summary>
        [StructLayout(LayoutKind.Sequential)]
        public struct Message
        {
            public IntPtr hWnd;
            public WindowMessage msg;
            public IntPtr wParam;
            public IntPtr lParam;
            public uint time;
            public System.Drawing.Point p;
        }

        /// <summary>MinMax Info structure</summary>
        [StructLayout(LayoutKind.Sequential)]
        public struct MinMaxInformation
        {
            public System.Drawing.Point reserved;
            public System.Drawing.Point MaxSize;
            public System.Drawing.Point MaxPosition;
            public System.Drawing.Point MinTrackSize;
            public System.Drawing.Point MaxTrackSize;
        }

        /// <summary>Monitor Info structure</summary>
        [StructLayout(LayoutKind.Sequential)]
        public struct MonitorInformation
        {
            public uint Size; // Size of this structure
            public System.Drawing.Rectangle MonitorRectangle;
            public System.Drawing.Rectangle WorkRectangle;
            public uint Flags; // Possible flags
        }
        #endregion

        #region Windows API calls
        [System.Security.SuppressUnmanagedCodeSecurity] // We won't use this maliciously
        [System.Runtime.InteropServices.DllImport("winmm.dll")]
        public static extern IntPtr timeBeginPeriod(uint period);

        [System.Security.SuppressUnmanagedCodeSecurity] // We won't use this maliciously
        [DllImport("kernel32")]
        public static extern bool QueryPerformanceFrequency(ref long PerformanceFrequency);

        [System.Security.SuppressUnmanagedCodeSecurity] // We won't use this maliciously
        [DllImport("kernel32")]
        public static extern bool QueryPerformanceCounter(ref long PerformanceCount);

        [System.Security.SuppressUnmanagedCodeSecurity] // We won't use this maliciously
        [DllImport("User32.dll", CharSet=CharSet.Auto)]
        public static extern bool GetMonitorInfo(IntPtr hWnd, ref MonitorInformation info);

        [System.Security.SuppressUnmanagedCodeSecurity] // We won't use this maliciously
        [DllImport("User32.dll", CharSet=CharSet.Auto)]
        public static extern IntPtr MonitorFromWindow(IntPtr hWnd, uint flags);

        [System.Security.SuppressUnmanagedCodeSecurity] // We won't use this maliciously
        [DllImport("User32.dll", CharSet=CharSet.Auto)]
        public static extern short GetAsyncKeyState(uint key);

        [System.Security.SuppressUnmanagedCodeSecurity] // We won't use this maliciously
        [DllImport("User32.dll", CharSet=CharSet.Auto)]
        public static extern IntPtr SetCapture(IntPtr handle);

        [System.Security.SuppressUnmanagedCodeSecurity] // We won't use this maliciously
        [DllImport("User32.dll", CharSet=CharSet.Auto)]
        public static extern bool ReleaseCapture();

        [System.Security.SuppressUnmanagedCodeSecurity] // We won't use this maliciously
        [DllImport("User32.dll", CharSet=CharSet.Auto)]
        public static extern int GetCaretBlinkTime();

        [System.Security.SuppressUnmanagedCodeSecurity] // We won't use this maliciously
        [DllImport("User32.dll", CharSet=CharSet.Auto)]
        public static extern bool PeekMessage(out Message msg, IntPtr hWnd, uint messageFilterMin, uint messageFilterMax, uint flags);
        #endregion

        #region Class Methods
        private NativeMethods() {} // No creation
        /// <summary>Returns the low word</summary>
        public static short LoWord(uint l)
        {
            return (short)(l & 0xffff);
        }
        /// <summary>Returns the high word</summary>
        public static short HiWord(uint l)
        {
            return (short)(l >> 16);
        }

        /// <summary>Makes two shorts into a long</summary>
        public static uint MakeUInt32(short l, short r)
        {
            return (uint)((l & 0xffff) | ((r & 0xffff) << 16));
        }

        /// <summary>Is this key down right now</summary>
        public static bool IsKeyDown(System.Windows.Forms.Keys key)