using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
// ADD
using System.Xml;
using System.Reflection;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Collections.ObjectModel;

namespace PictureMenu
{
    public partial class Form1 : Form, IMessageFilter
    {

        [DllImport("User32.dll")]
        private static extern int SendMessage(IntPtr hWnd, int msg, int wParam, int lParam);

        private XmlDocument mXML1 = new XmlDocument();
        private string msBarcode = string.Empty;
        private string msImage = string.Empty;
        private Boolean mbShowingBarcode = false;
        private Bitmap mBMP1 = null;
        //private Keys mKeyCode = Keys.None;

        private AboutBox1 FAbout = null;
        //WMPLib.IWMPPlaylist mPlayList = null;
        private ListPicture mList = new ListPicture();
        private ItemPicture mItem = null;

        public class ListPicture : KeyedCollection<int, ItemPicture>
        {
            public ListPicture() : base() { }
            protected override int GetKeyForItem(ItemPicture item)
            {
                return item.iID;
            }
        }
        public class ItemPicture
        {
            public int iID;
            public string sPath;
            public Bitmap bmp1 = null;

            public override string ToString()
            {
                return string.Format("{0},{1}", iID, sPath);
            }

        }

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            // Init
            string s1;
            int i1;
            ControlBox = false;
            FormBorderStyle = FormBorderStyle.None;
            KeyPreview = true;
            MaximizeBox = false;
            MinimizeBox = false;
            WindowState = FormWindowState.Maximized;
            picA.Width = Width;
            picA.Height = Height;
            picA.Visible = false;

            tbl1.Dock = DockStyle.Fill;
            pic1.SizeMode = PictureBoxSizeMode.StretchImage;
            pic2.SizeMode = PictureBoxSizeMode.StretchImage;
            pic3.SizeMode = PictureBoxSizeMode.StretchImage;
            pic4.SizeMode = PictureBoxSizeMode.StretchImage;
            pic5.SizeMode = PictureBoxSizeMode.StretchImage;
            pic6.SizeMode = PictureBoxSizeMode.StretchImage;
            pic7.SizeMode = PictureBoxSizeMode.StretchImage;
            pic8.SizeMode = PictureBoxSizeMode.StretchImage;
            pic9.SizeMode = PictureBoxSizeMode.StretchImage;
            pic1.Dock = DockStyle.Fill;
            pic2.Dock = DockStyle.Fill;
            pic3.Dock = DockStyle.Fill;
            pic4.Dock = DockStyle.Fill;
            pic5.Dock = DockStyle.Fill;
            pic6.Dock = DockStyle.Fill;
            pic7.Dock = DockStyle.Fill;
            pic8.Dock = DockStyle.Fill;
            pic9.Dock = DockStyle.Fill;

            timer1.Stop();
            timer1.Interval = 5000;
            StringBuilder sb1 = new StringBuilder();
            string sFile = string.Empty;
            string sQry = string.Empty;

            mXML1.Load(@".\ProductInfo.xml");
            XmlNodeList nList = mXML1.SelectNodes("/ProductList");
            if ((nList != null) && (nList.Count > 0))
            {
                i1 = Convert.ToInt32(nList[0].Attributes["PicInterval"].Value);
                timer1.Interval = i1;
                msImage = nList[0].Attributes["BackGroundImage"].Value;
                mBMP1 = new Bitmap(msImage);
            }

            nList = null;
            sFile = string.Empty;
            sQry = "/ProductList/Media/Item";
            nList = mXML1.SelectNodes(sQry);
            sb1.Length = 0;
            if (nList != null)
            {
                for (int i = 0; i < nList.Count; i++)
                {
                    s1 = nList[i].Attributes["ID"].Value;
                    i1 = Convert.ToInt32(s1);
                    if ((i1 <= 9) && (i1 >= 1))
                    {
                        sFile = nList[i].InnerText;
                        sb1.Append(sFile);
                        sb1.Append("|");

                        mItem = new ItemPicture();
                        mItem.iID = i1;
                        mItem.sPath = sFile;
                        mItem.bmp1 = new Bitmap(sFile);
                        mList.Add(mItem);
                    }
                }
                if (sb1.Length > 0)
                    sb1.Length--;
            }
            s1 = sb1.ToString();
            Trace.WriteLine("MediaList = " + s1);

            pic1.Image = mList[1].bmp1;
            pic2.Image = mList[2].bmp1;
            pic3.Image = mList[3].bmp1;
            pic4.Image = mList[4].bmp1;
            pic5.Image = mList[5].bmp1;
            pic6.Image = mList[6].bmp1;
            pic7.Image = mList[7].bmp1;
            pic8.Image = mList[8].bmp1;
            pic9.Image = mList[9].bmp1;

            Application.AddMessageFilter(this);

        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (mBMP1 != null)
            {
                mBMP1 = null;
            }

            // 沒用in VSD.
            //MediaP1.close();
            //MediaP1.Dispose();
            Application.RemoveMessageFilter(this);

        }
        private void ShowPicture(string sFilename)
        {
            Bitmap b1 = new Bitmap(sFilename);
            picA.Image = b1;
            picA.Visible = true;
        }
        private void myKeyPress(char c1)
        {
            msBarcode += c1;
        }

        private void Form1_KeyPress(object sender, KeyPressEventArgs e)
        {
        }

        private void picA_Click(object sender, EventArgs e)
        {
            timer1.Stop();
            picA.Image = null;
            picA.Visible = false;
            msBarcode = string.Empty;
        }

        private void Form1_Paint(object sender, PaintEventArgs e)
        {
            Rectangle r1 = new Rectangle(0, 0, Screen.PrimaryScreen.Bounds.Width,
                Screen.PrimaryScreen.Bounds.Height);

            if (mBMP1 != null)
                e.Graphics.DrawImage(mBMP1, r1);
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            timer1.Stop();
            msBarcode = string.Empty;
            mbShowingBarcode = false;
            ShowScreen();
        }
        private void ShowScreen()
        {
            if (mbShowingBarcode)
            {
                tbl1.Visible = false;
            }
            else
            {
                picA.Image = null;
                picA.Visible = false;
                tbl1.Visible = true;
            }
        }
        private void myShowPictureFound(string sFile)
        {
            timer1.Stop();
            ShowPicture(sFile);
            mbShowingBarcode = true;
            ShowScreen();
            timer1.Start();
        }
        private void myKeyDown(Keys k1)
        {
            string sQry = string.Empty;
            string sFile = string.Empty;
            switch (k1)
            {
                case Keys.Enter:
                    Boolean bFound = false;
                    string s1 = msBarcode.ToUpper();
                    Trace.WriteLine("myKeyDown(): msBarcode=" + msBarcode);
                    if (s1 == "TEST")
                    {
                        bFound = true;
                        //timer1.Stop();
                        //sFile = "Product-01.jpg";
                        //ShowPicture(sFile);
                        //mbShowingBarcode = true;
                        //ShowScreen();
                        //timer1.Start();
                        myShowPictureFound("Product-01.jpg");
                    }
                    else
                    {
                        sQry = "/ProductList/Product[@ID='" + msBarcode + "']";
                        sFile = string.Empty;
                        XmlNodeList nList = mXML1.SelectNodes(sQry);
                        Boolean bExist = false;
                        if (nList != null)
                        {
                            if (nList.Count > 0)
                            {
                                bFound = true;
                                //timer1.Stop();
                                //sFile = nList[0]["Image"].InnerText;
                                //ShowPicture(sFile);
                                //mbShowingBarcode = true;
                                //ShowScreen();
                                //timer1.Start();
                                myShowPictureFound(nList[0]["Image"].InnerText);
                            }
                        }
                    }
                    msBarcode = string.Empty;
                    break;

                case Keys.Escape:
                    DialogResult d1 = MessageBox.Show("Close ?", "Confirm", MessageBoxButtons.OKCancel);
                    if (d1 == DialogResult.OK)
                    {
                        this.Close();
                    }
                    break;
                case Keys.F1:
                    MessageBox.Show(String.Format("Version {0}", Assembly.GetExecutingAssembly().GetName().Version.ToString()), "Information");
                    break;
                default:
                    break;
            }

        }

        private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
        }


        #region IMessageFilter Members

        private const UInt32 WM_KEYDOWN = 0x0100; // 256
        //private const UInt32 WM_CHAR = 0x0102; // 258
        public bool PreFilterMessage(ref Message m)
        {
            //if (MediaP1.playState == WMPLib.WMPPlayState.wmppsPlaying)
            //{
            //    if (MediaP1.fullScreen == true)
            //    {
            if (m.Msg == WM_KEYDOWN)
            {
                //int iPress = (((int)m.WParam) | ((int)Control.ModifierKeys));
                //if (iPress) {}
                //else if () {}
                //else if () {}
                //else if () {}
                //else if () {}
                //else if () {}
                //else {}

                //SendMessage(this.Handle, (int)m.Msg, (int)m.WParam, (int)m.LParam);
                Boolean bText = false;
                //Keys KeyCode1 = (Keys)(int)m.WParam & Keys.KeyCode;

                Keys KeyCode1 = (Keys)(int)m.WParam & Keys.KeyCode;
                char KeyChar = Convert.ToChar(KeyCode1);
                Trace.WriteLine(string.Format("PreFilterMessage(): KeyCode1={0}, KeyChar={1}, msBarcode={2}", KeyCode1, KeyChar, msBarcode));
                if ((KeyCode1 >= Keys.A) && (KeyCode1 <= Keys.Z))
                    bText = true;
                if ((KeyCode1 >= Keys.D0) && (KeyCode1 <= Keys.D9))
                    bText = true;
                if (bText)
                    myKeyPress(KeyChar);
                else
                    myKeyDown(KeyCode1);


                //if (keyCode == Keys.Escape)
                //{
                //    this.MediaP1.fullScreen = false;
                //}

                //switch (((int)m.WParam) | ((int)Control.ModifierKeys))
                //{
                //    case (int)(Keys.Control | Keys.Alt | Keys.K):
                //        MessageBox.Show("You pressed ctrl + alt + k");
                //        break;
                //    //This does not work. It seems you can only check single character along with CTRL and ALT.
                //    //case (int)(Keys.Control | Keys.Alt | Keys.K | Keys.P):
                //    //    MessageBox.Show("You pressed ctrl + alt + k + p");
                //    //    break;
                //    case (int)(Keys.Control | Keys.C): MessageBox.Show("You pressed ctrl+c");
                //        break;
                //    case (int)(Keys.Control | Keys.V): MessageBox.Show("You pressed ctrl+v");
                //        break;
                //    case (int)Keys.Up: MessageBox.Show("You pressed up");
                //        break;
                //    case (int) Keys.Escape:
                //        myKeyDown(Keys.Escape);
                //        break;
                //}

                //return true; // true = stop dispatch.
                return false;  // false = continue dispatch.
            }
            //if (m.Msg == WM_CHAR)
            //{
            //    // 沒攔截到WM_CHAR, 無效!
            //    Keys KeyCode1 = (Keys)(int)m.WParam & Keys.KeyCode;

            //    Trace.Write("Keycode1 = " + KeyCode1);
            //    char KeyChar = Convert.ToChar(KeyCode1);
            //    Trace.WriteLine("KeyChar1 = " + KeyChar);
            //}
            //    }
            //}
            return false;  // false = continue dispatch.
        }
        #endregion

        private void pic1_Click(object sender, EventArgs e)
        {
            myShowPictureFound(mList[1].sPath);
       }

        private void pic2_Click(object sender, EventArgs e)
        {
            myShowPictureFound(mList[2].sPath);

        }

        private void pic3_Click(object sender, EventArgs e)
        {
            myShowPictureFound(mList[3].sPath);

        }

        private void pic4_Click(object sender, EventArgs e)
        {
            myShowPictureFound(mList[4].sPath);

        }

        private void pic5_Click(object sender, EventArgs e)
        {
            myShowPictureFound(mList[5].sPath);

        }

        private void pic6_Click(object sender, EventArgs e)
        {
            myShowPictureFound(mList[6].sPath);

        }

        private void pic7_Click(object sender, EventArgs e)
        {
            myShowPictureFound(mList[7].sPath);

        }

        private void pic8_Click(object sender, EventArgs e)
        {
            myShowPictureFound(mList[8].sPath);

        }

        private void pic9_Click(object sender, EventArgs e)
        {
            myShowPictureFound(mList[9].sPath);

        }
    }
}