win/C#/frmDownload.cs

   1 /*  frmDownload.cs $\r
   2         \r
   3            This file is part of the HandBrake source code.\r
   4            Homepage: <http://handbrake.fr>.\r
   5            It may be used under the terms of the GNU General Public License. */\r
   6 \r
   7 using System;\r
   8 using System.Collections.Generic;\r
   9 using System.ComponentModel;\r
  10 using System.Data;\r
  11 using System.Drawing;\r
  12 using System.Text;\r
  13 using System.Windows.Forms;\r
  14 using System.Net;\r
  15 using System.IO;\r
  16 using System.Threading;\r
  17 using System.Diagnostics;\r
  18 \r
  19 namespace Handbrake\r
  20 {\r
  21     public partial class frmDownload : Form\r
  22     {\r
  23         private Thread downloadThread;\r
  24         private Stream responceStream;\r
  25         private Stream loacalStream;\r
  26         private HttpWebRequest webRequest;\r
  27         private HttpWebResponse webResponse;\r
  28         private static int progress;\r
  29         private delegate void UpdateProgessCallback(Int64 BytesRead, Int64 TotalBytes);\r
  30         private delegate void DownloadCompleteCallback();\r
  31         private delegate void DownloadFailedCallback();\r
  32 \r
  33 \r
  34         public frmDownload()\r
  35         {\r
  36             InitializeComponent();\r
  37 \r
  38             downloadThread = new Thread(Download);\r
  39             downloadThread.Start();\r
  40         }\r
  41 \r
  42         private void Download()\r
  43         {\r
  44             Functions.AppcastReader rssRead = new Functions.AppcastReader();\r
  45             string tempPath = Path.Combine(Path.GetTempPath(), "handbrake-setup.exe");\r
  46             string hbUpdate = rssRead.downloadFile();\r
  47             WebClient wcDownload = new WebClient();\r
  48 \r
  49             try\r
  50             {\r
  51                 if (File.Exists(tempPath))\r
  52                     File.Delete(tempPath);\r
  53 \r
  54                 webRequest = (HttpWebRequest)WebRequest.Create(hbUpdate);\r
  55                 webRequest.Credentials = CredentialCache.DefaultCredentials;\r
  56                 webResponse = (HttpWebResponse)webRequest.GetResponse();\r
  57                 Int64 fileSize = webResponse.ContentLength;\r
  58 \r
  59                 responceStream = wcDownload.OpenRead(hbUpdate);\r
  60                 loacalStream = new FileStream(tempPath, FileMode.Create, FileAccess.Write, FileShare.None);\r
  61 \r
  62                 int bytesSize = 0;\r
  63                 byte[] downBuffer = new byte[2048];\r
  64 \r
  65                 long flength = 0;\r
  66                 while ((bytesSize = responceStream.Read(downBuffer, 0, downBuffer.Length)) > 0)\r
  67                 {\r
  68                     loacalStream.Write(downBuffer, 0, bytesSize);\r
  69                     flength = loacalStream.Length;\r
  70                     this.Invoke(new UpdateProgessCallback(this.UpdateProgress), new object[] { loacalStream.Length, fileSize });\r
  71                 }\r
  72 \r
  73                 responceStream.Close();\r
  74                 loacalStream.Close();\r
  75 \r
  76                 if (flength != fileSize)\r
  77                     this.Invoke(new DownloadFailedCallback(this.downloadFailed));\r
  78                 else\r
  79                     this.Invoke(new DownloadCompleteCallback(this.downloadComplete));\r
  80             }\r
  81             catch (Exception)\r
  82             {\r
  83                 // Do Nothing \r
  84             }\r
  85         }\r
  86 \r
  87         private void UpdateProgress(Int64 BytesRead, Int64 TotalBytes)\r
  88         {\r
  89             try\r
  90             {\r
  91                 long p = (BytesRead * 100) / TotalBytes;\r
  92                 progress = int.Parse(p.ToString());\r
  93                 progress_download.Value = progress;\r
  94                 lblProgress.Text = (BytesRead / 1024) + "k of " + (TotalBytes / 1024) + "k ";\r
  95             }\r
  96             catch (Exception exc)\r
  97             {\r
  98                 MessageBox.Show("Integer Convertion Error On Download \n" + exc.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);\r
  99             }\r
 100         }\r
 101 \r
 102         private void downloadComplete()\r
 103         {\r
 104             lblProgress.Text = "Download Complete";\r
 105             btn_cancel.Text = "Close";\r
 106 \r
 107             string tempPath = Path.Combine(Path.GetTempPath(), "handbrake-setup.exe");\r
 108 \r
 109             Process startInstall = Process.Start(tempPath);\r
 110             this.Close();\r
 111             Application.Exit();\r
 112         }\r
 113 \r
 114         private void downloadFailed()\r
 115         {\r
 116             lblProgress.Text = "Download Failed";\r
 117             btn_cancel.Text = "Close";\r
 118         }\r
 119 \r
 120         private void btn_cancel_Click(object sender, EventArgs e)\r
 121         {\r
 122             try\r
 123             {\r
 124                 webResponse.Close();\r
 125                 responceStream.Close();\r
 126                 loacalStream.Close();\r
 127                 downloadThread.Abort();\r
 128                 progress_download.Value = 0;\r
 129                 lblProgress.Text = "Download Stopped";\r
 130                 this.Close();\r
 131             }\r
 132             catch (Exception)\r
 133             {\r
 134                 // Do nothing\r
 135             }\r
 136         }\r
 137     }\r
 138 }