win/C#/frmGenPreview.cs

   1 using System;\r
   2 using System.Windows.Forms;\r
   3 using System.Threading;\r
   4 using System.Diagnostics;\r
   5 using System.IO;\r
   6 \r
   7 namespace Handbrake\r
   8 {\r
   9     public partial class frmGenPreview : Form\r
  10     {\r
  11         private delegate void UpdateHandler();\r
  12         QueryGenerator queryGen = new QueryGenerator();\r
  13         Functions.Encode process = new Functions.Encode();\r
  14         Process hbProc;\r
  15         frmMain mainWindow;\r
  16 \r
  17         public frmGenPreview(frmMain mw)\r
  18         {\r
  19             InitializeComponent();\r
  20             this.mainWindow = mw;\r
  21             cb_duration.SelectedIndex = 0;\r
  22             cb_preview.SelectedIndex = 0;\r
  23         }\r
  24 \r
  25         private void btn_play_Click(object sender, EventArgs e)\r
  26         {\r
  27             // Get the Destination of the sample video.\r
  28              String currently_playing = "";\r
  29             if (mainWindow.text_destination.Text != "")\r
  30                 currently_playing = mainWindow.text_destination.Text.Replace(".m", "_sample.m").Replace(".avi", "_sample.avi").Replace(".ogm", "_sample.ogm");\r
  31 \r
  32             // Launch VLC and play video.\r
  33             if (currently_playing != "")\r
  34             {\r
  35                 if (File.Exists(currently_playing))\r
  36                 {\r
  37                     if (File.Exists(Properties.Settings.Default.VLC_Path))\r
  38                     {\r
  39                         String args = "\"" + currently_playing + "\"";\r
  40                         ProcessStartInfo vlc = new ProcessStartInfo(Properties.Settings.Default.VLC_Path, args);\r
  41                         Process.Start(vlc);\r
  42                         lbl_status.Text = "VLC will now launch.";\r
  43                     }\r
  44                     else\r
  45                         MessageBox.Show("Unable to detect VLC Player. \nPlease make sure VLC is installed and the directory specified in the program options is correct.", "VLC", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
  46                 } else\r
  47                     MessageBox.Show("Unable to find the preview file. Either the file was deleted or the encode failed. Check the activity log for details.", "VLC", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
  48             }\r
  49         }\r
  50 \r
  51         private void btn_encode_Click(object sender, EventArgs e)\r
  52         {\r
  53             String query = queryGen.GeneratePreviewQuery(mainWindow, cb_duration.Text, cb_preview.Text);\r
  54             ThreadPool.QueueUserWorkItem(procMonitor, query);\r
  55         }\r
  56         private void procMonitor(object state)\r
  57         {\r
  58             // Make sure we are not already encoding and if we are then display an error.\r
  59             if (hbProc != null)\r
  60                 MessageBox.Show("Handbrake is already encoding a video!", "Status", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
  61             else\r
  62             {\r
  63                 encodingMessage();\r
  64                 hbProc = process.runCli(this, (string)state);\r
  65                 hbProc.WaitForExit();\r
  66                 hbProc = null;\r
  67                 updateUIElements();\r
  68             }\r
  69         }\r
  70         // Update the UI now that the encode has finished.\r
  71         private void encodingMessage()\r
  72         {\r
  73             try\r
  74             {\r
  75                 if (InvokeRequired)\r
  76                 {\r
  77                     BeginInvoke(new UpdateHandler(encodingMessage));\r
  78                     return;\r
  79                 }\r
  80                 lbl_status.Text = "Encoding, Please wait ...";\r
  81             }\r
  82             catch (Exception exc)\r
  83             {\r
  84                 MessageBox.Show(exc.ToString());\r
  85             }\r
  86         }\r
  87 \r
  88         // Update the UI now that the encode has finished.\r
  89         private void updateUIElements()\r
  90         {\r
  91             try\r
  92             {\r
  93                 if (InvokeRequired)\r
  94                 {\r
  95                     BeginInvoke(new UpdateHandler(updateUIElements));\r
  96                     return;\r
  97                 }\r
  98 \r
  99                 btn_play.Visible = true;\r
 100                 toolStripSeparator1.Visible = true;\r
 101                 lbl_status.Text = "Your sample is ready to play.";\r
 102             }\r
 103             catch (Exception exc)\r
 104             {\r
 105                 MessageBox.Show(exc.ToString());\r
 106             }\r
 107         }\r
 108 \r
 109 \r
 110     }\r
 111 }\r