Server/MainForm.cs
author sl
Thu, 14 Aug 2014 00:23:18 +0200
changeset 21 274a6b27c3f9
parent 20 e3d394dd0388
child 22 cac466b1b6e6
permissions -rw-r--r--
Adding server closing notification to clients.
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´╗┐using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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using System.IO;
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using CodeProject.Dialog;
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using System.Drawing.Imaging;
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using System.ServiceModel;
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namespace SharpDisplayManager
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{
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    public partial class MainForm : Form
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    {
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        DateTime LastTickTime;
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        Display iDisplay;
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        System.Drawing.Bitmap iBmp;
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        bool iCreateBitmap; //Workaround render to bitmap issues when minimized
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        ServiceHost iServiceHost;
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        /// <summary>
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        /// Our collection of clients
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        /// </summary>
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        public Dictionary<string, IDisplayServiceCallback> iClients;
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        public MainForm()
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        {
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            LastTickTime = DateTime.Now;
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            iDisplay = new Display();
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            iClients = new Dictionary<string, IDisplayServiceCallback>();
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            InitializeComponent();
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            UpdateStatus();
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            //Load settings
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            marqueeLabelTop.Font = Properties.Settings.Default.DisplayFont;
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            marqueeLabelBottom.Font = Properties.Settings.Default.DisplayFont;
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            checkBoxShowBorders.Checked = Properties.Settings.Default.DisplayShowBorders;
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            checkBoxConnectOnStartup.Checked = Properties.Settings.Default.DisplayConnectOnStartup;
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            checkBoxReverseScreen.Checked = Properties.Settings.Default.DisplayReverseScreen;
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            //
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            tableLayoutPanel.CellBorderStyle = (checkBoxShowBorders.Checked ? TableLayoutPanelCellBorderStyle.Single : TableLayoutPanelCellBorderStyle.None);
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            //We have a bug when drawing minimized and reusing our bitmap
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            iBmp = new System.Drawing.Bitmap(tableLayoutPanel.Width, tableLayoutPanel.Height, PixelFormat.Format32bppArgb);
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            iCreateBitmap = false;
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        }
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        private void MainForm_Load(object sender, EventArgs e)
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        {
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            StartServer();
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            if (Properties.Settings.Default.DisplayConnectOnStartup)
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            {
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                iDisplay.Open();
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                UpdateStatus();
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            }
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        }
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        private void buttonFont_Click(object sender, EventArgs e)
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        {
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            //fontDialog.ShowColor = true;
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            //fontDialog.ShowApply = true;
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            fontDialog.ShowEffects = true;
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            fontDialog.Font = marqueeLabelTop.Font;
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            //fontDialog.ShowHelp = true;
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            //fontDlg.MaxSize = 40;
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            //fontDlg.MinSize = 22;
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            //fontDialog.Parent = this;
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            //fontDialog.StartPosition = FormStartPosition.CenterParent;
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            //DlgBox.ShowDialog(fontDialog);
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            //if (fontDialog.ShowDialog(this) != DialogResult.Cancel)
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            if (DlgBox.ShowDialog(fontDialog) != DialogResult.Cancel)
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            {
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                //MsgBox.Show("MessageBox MsgBox", "MsgBox caption");
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                //MessageBox.Show("Ok");
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                marqueeLabelTop.Font = fontDialog.Font;
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                marqueeLabelBottom.Font = fontDialog.Font;
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                Properties.Settings.Default.DisplayFont = fontDialog.Font;
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                Properties.Settings.Default.Save();
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                //label1.Font = fontDlg.Font;
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                //textBox1.BackColor = fontDlg.Color;
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                //label1.ForeColor = fontDlg.Color;
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            }
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        }
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        private void buttonCapture_Click(object sender, EventArgs e)
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        {
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            System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(tableLayoutPanel.Width, tableLayoutPanel.Height);
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            tableLayoutPanel.DrawToBitmap(bmp, tableLayoutPanel.ClientRectangle);
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            //Bitmap bmpToSave = new Bitmap(bmp);
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            bmp.Save("D:\\capture.png");
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            marqueeLabelTop.Text = "Sweet";
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            /*
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            string outputFileName = "d:\\capture.png";
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            using (MemoryStream memory = new MemoryStream())
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            {
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                using (FileStream fs = new FileStream(outputFileName, FileMode.OpenOrCreate, FileAccess.ReadWrite))
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                {
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                    bmp.Save(memory, System.Drawing.Imaging.ImageFormat.Png);
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                    byte[] bytes = memory.ToArray();
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                    fs.Write(bytes, 0, bytes.Length);
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                }
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            }
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             */
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        }
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        private void CheckForRequestResults()
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        {
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            if (iDisplay.IsRequestPending())
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            {
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                switch (iDisplay.AttemptRequestCompletion())
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                {
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                    case Display.TMiniDisplayRequest.EMiniDisplayRequestPowerSupplyStatus:
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                        if (iDisplay.PowerSupplyStatus())
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                        {
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                            toolStripStatusLabelPower.Text = "ON";
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                        }
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                        else
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                        {
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                            toolStripStatusLabelPower.Text = "OFF";
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                        }
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                        //Issue next request then
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                        iDisplay.RequestDeviceId();
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                        break;
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                    case Display.TMiniDisplayRequest.EMiniDisplayRequestDeviceId:
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                        toolStripStatusLabelConnect.Text += " - " + iDisplay.DeviceId();
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                        //Issue next request then
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                        iDisplay.RequestFirmwareRevision();
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                        break;
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                    case Display.TMiniDisplayRequest.EMiniDisplayRequestFirmwareRevision:
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                        toolStripStatusLabelConnect.Text += " v" + iDisplay.FirmwareRevision();
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                        //No more request to issue
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                        break;
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                }
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            }
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        }
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        public delegate int CoordinateTranslationDelegate(System.Drawing.Bitmap aBmp, int aInt);
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        public static int ScreenReversedX(System.Drawing.Bitmap aBmp, int aX)
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        {
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            return aBmp.Width - aX - 1;
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        }
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        public int ScreenReversedY(System.Drawing.Bitmap aBmp, int aY)
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        {
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            return iBmp.Height - aY - 1;
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        }
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        public int ScreenX(System.Drawing.Bitmap aBmp, int aX)
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        {
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            return aX;
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        }
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        public int ScreenY(System.Drawing.Bitmap aBmp, int aY)
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        {
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            return aY;
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        }
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        //This is our timer tick responsible to perform our render
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        private void timer_Tick(object sender, EventArgs e)
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        {
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            //Update our animations
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            DateTime NewTickTime = DateTime.Now;
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            marqueeLabelTop.UpdateAnimation(LastTickTime, NewTickTime);
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            marqueeLabelBottom.UpdateAnimation(LastTickTime, NewTickTime);
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            //Update our display
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            if (iDisplay.IsOpen())
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            {
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                CheckForRequestResults();
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                //Draw to bitmap                
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                if (iCreateBitmap)
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                {
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                    iBmp = new System.Drawing.Bitmap(tableLayoutPanel.Width, tableLayoutPanel.Height, PixelFormat.Format32bppArgb);
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                }
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                tableLayoutPanel.DrawToBitmap(iBmp, tableLayoutPanel.ClientRectangle);
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                //iBmp.Save("D:\\capture.png");
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                //Select proper coordinate translation functions
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                //We used delegate/function pointer to support reverse screen without doing an extra test on each pixels
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                CoordinateTranslationDelegate screenX;
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                CoordinateTranslationDelegate screenY;
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                if (Properties.Settings.Default.DisplayReverseScreen)
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                {
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                    screenX = ScreenReversedX;
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                    screenY = ScreenReversedY;
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                }
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                else
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                {
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                    screenX = ScreenX;
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                    screenY = ScreenY;
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                }
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                //Send it to our display
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                for (int i = 0; i < iBmp.Width; i++)
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                {
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                    for (int j = 0; j < iBmp.Height; j++)
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                    {
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                        unchecked
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                        {
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                            uint color = (uint)iBmp.GetPixel(i, j).ToArgb();
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                            //For some reason when the app is minimized in the task bar only the alpha of our color is set.
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                            //Thus that strange test for rendering to work both when the app is in the task bar and when it isn't.
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                            iDisplay.SetPixel(screenX(iBmp, i), screenY(iBmp, j), Convert.ToInt32(!(color != 0xFF000000)));
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                        }
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                    }
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                }
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                iDisplay.SwapBuffers();
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            }
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            //Compute instant FPS
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            toolStripStatusLabelFps.Text = (1.0/NewTickTime.Subtract(LastTickTime).TotalSeconds).ToString("F0") + " FPS";
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            LastTickTime = NewTickTime;
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        }
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        private void buttonOpen_Click(object sender, EventArgs e)
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        {
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            if (iDisplay.Open())
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            {
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                UpdateStatus();
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                iDisplay.RequestPowerSupplyStatus();
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            }
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            else
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            {
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                UpdateStatus();
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                toolStripStatusLabelConnect.Text = "Connection error";
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            }
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        }
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        private void buttonClose_Click(object sender, EventArgs e)
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        {
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            iDisplay.Close();
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            UpdateStatus();
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        }
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        private void buttonClear_Click(object sender, EventArgs e)
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        {
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            iDisplay.Clear();
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            iDisplay.SwapBuffers();
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        }
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        private void buttonFill_Click(object sender, EventArgs e)
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        {
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            iDisplay.Fill();
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            iDisplay.SwapBuffers();
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        }
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        private void trackBarBrightness_Scroll(object sender, EventArgs e)
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        {
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            Properties.Settings.Default.DisplayBrightness = trackBarBrightness.Value;
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            Properties.Settings.Default.Save();
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            iDisplay.SetBrightness(trackBarBrightness.Value);
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        }
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        private void UpdateStatus()
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        {
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            if (iDisplay.IsOpen())
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            {
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                buttonFill.Enabled = true;
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                buttonClear.Enabled = true;
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                buttonOpen.Enabled = false;
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                buttonClose.Enabled = true;
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                trackBarBrightness.Enabled = true;
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                trackBarBrightness.Minimum = iDisplay.MinBrightness();
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                trackBarBrightness.Maximum = iDisplay.MaxBrightness();
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                trackBarBrightness.Value = Properties.Settings.Default.DisplayBrightness;
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                trackBarBrightness.LargeChange = Math.Max(1,(iDisplay.MaxBrightness() - iDisplay.MinBrightness())/5);
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                trackBarBrightness.SmallChange = 1;
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                iDisplay.SetBrightness(Properties.Settings.Default.DisplayBrightness);
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                toolStripStatusLabelConnect.Text = "Connected - " + iDisplay.Vendor() + " - " + iDisplay.Product();
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                //+ " - " + iDisplay.SerialNumber();
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            }
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            else
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            {
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                buttonFill.Enabled = false;
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                buttonClear.Enabled = false;
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                buttonOpen.Enabled = true;
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                buttonClose.Enabled = false;
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                trackBarBrightness.Enabled = false;
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                toolStripStatusLabelConnect.Text = "Disconnected";
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            }
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        }
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        private void checkBoxShowBorders_CheckedChanged(object sender, EventArgs e)
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        {
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            //Save our show borders setting
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            tableLayoutPanel.CellBorderStyle = (checkBoxShowBorders.Checked ? TableLayoutPanelCellBorderStyle.Single : TableLayoutPanelCellBorderStyle.None);
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            Properties.Settings.Default.DisplayShowBorders = checkBoxShowBorders.Checked;
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            Properties.Settings.Default.Save();
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        }
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        private void checkBoxConnectOnStartup_CheckedChanged(object sender, EventArgs e)
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        {
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            //Save our connect on startup setting
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            Properties.Settings.Default.DisplayConnectOnStartup = checkBoxConnectOnStartup.Checked;
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            Properties.Settings.Default.Save();
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        }
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        private void checkBoxReverseScreen_CheckedChanged(object sender, EventArgs e)
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        {
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            //Save our reverse screen setting
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            Properties.Settings.Default.DisplayReverseScreen = checkBoxReverseScreen.Checked;
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            Properties.Settings.Default.Save();
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        }
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        private void MainForm_Resize(object sender, EventArgs e)
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        {
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            if (WindowState == FormWindowState.Minimized)
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            {
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                // Do some stuff
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                //iBmp = new System.Drawing.Bitmap(tableLayoutPanel.Width, tableLayoutPanel.Height, PixelFormat.Format32bppArgb);
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                iCreateBitmap = true;
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            }
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        }
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        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
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        {
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            StopServer();
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        }
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        public void StartServer()
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        {
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            iServiceHost = new ServiceHost
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                (
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                    typeof(DisplayServer),
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                    new Uri[] { new Uri("net.tcp://localhost:8001/") }
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                );
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            iServiceHost.AddServiceEndpoint(typeof(IDisplayService), new NetTcpBinding(), "DisplayService");
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            iServiceHost.Open();
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        }
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        public void StopServer()
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        {
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            //Tell connected client first? Is that possible?
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            BroadcastCloseEvent();
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            iServiceHost.Close();
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        }
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        public void BroadcastCloseEvent()
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        {
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            var inactiveClients = new List<string>();
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            foreach (var client in iClients)
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            {
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                //if (client.Key != eventData.ClientName)
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                {
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                    try
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                    {
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                        client.Value.OnServerClosing(/*eventData*/);
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                    }
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                    catch (Exception ex)
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                    {
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                        inactiveClients.Add(client.Key);
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                    }
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                }
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            }
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            if (inactiveClients.Count > 0)
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            {
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                foreach (var client in inactiveClients)
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                {
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                    iClients.Remove(client);
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                }
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            }
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        }
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    }
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}