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/* frmActivityWindow.cs $
This file is part of the HandBrake source code.
Homepage: <http://handbrake.fr>.
It may be used under the terms of the GNU General Public License. */
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Threading;
using System.Diagnostics;
using System.Runtime.InteropServices;
namespace Handbrake
{
public partial class frmActivityWindow : Form
{
Thread monitorFile;
String read_file;
frmMain mainWindow;
frmQueue queueWindow;
int position = 0; // Position in the arraylist reached by the current log output in the rtf box.
/// <summary>
/// This window should be used to display the RAW output of the handbrake CLI which is produced during an encode.
/// </summary>
///
public frmActivityWindow(string file, frmMain fm, frmQueue fq)
{
InitializeComponent();
mainWindow = fm;
queueWindow = fq;
read_file = file;
// Reset some varibles
this.rtf_actLog.Text = string.Empty;
position = 0;
string logFile = Path.Combine(Path.GetTempPath(), read_file);
if (File.Exists(logFile))
{
// Add a header to the log file indicating that it's from the Windows GUI and display the windows version
rtf_actLog.AppendText("### Windows GUI \n");
rtf_actLog.AppendText(String.Format("### Running: {0} \n###\n", Environment.OSVersion.ToString()));
// Start a new thread to run the autoUpdate process
monitorFile = new Thread(autoUpdate);
monitorFile.Start();
}
else
MessageBox.Show("The log file could not be found. Maybe you cleared your system's tempory folder or maybe you just havn't run an encode yet.", "Notice", MessageBoxButtons.OK, MessageBoxIcon.Warning);
// Handle the event of the window being disposed. This is needed to make sure HandBrake exit's cleanly.
this.Disposed += new EventHandler(forceQuit);
}
// Ok, so, this function is called when someone closes frmMain but didn't close frmActivitWindow first.
// When you close frmMain, the activity window gets closed (disposed of) but, this doens't kill the threads that it started.
// When that thread tries to access the disposed rich text box, it causes an exception.
// Basically, this function is called when the window is disposed of, to kill the thread and close the window properly.
// This allows HandBrake to close cleanly.
private void forceQuit(object sender, EventArgs e)
{
if (monitorFile != null)
monitorFile.Abort();
this.Close();
}
// Update the Activity window every 5 seconds with the latest log data.
private void autoUpdate(object state)
{
Boolean lastUpdate = false;
updateTextFromThread();
while (true)
{
if ((mainWindow.isEncoding() == true) || (queueWindow.isEncoding() == true))
updateTextFromThread();
else
{
// The encode may just have stoped, so, refresh the log one more time before restarting it.
if (lastUpdate == false)
updateTextFromThread();
lastUpdate = true;
position = 0;
}
Thread.Sleep(5000);
}
}
private delegate void UpdateUIHandler();
private void updateTextFromThread()
{
try
{
if (this.InvokeRequired)
{
this.BeginInvoke(new UpdateUIHandler(updateTextFromThread));
return;
}
// Initialize a pointer and get the log data arraylist
ArrayList data = readFile();
while (position < data.Count)
{
rtf_actLog.AppendText(data[position].ToString());
if (data[position].ToString().Contains("has exited"))
{
rtf_actLog.AppendText("\n ############ End of Encode ############## \n");
}
position++;
}
// this.rtf_actLog.SelectionStart = this.rtf_actLog.Text.Length - 1;
// this.rtf_actLog.ScrollToCaret();
}
catch (Exception exc)
{
MessageBox.Show("An error has occured in: updateTextFromThread(). \n You may have to restart HandBrake. \n Error Information: \n\n" + exc.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private ArrayList readFile()
{
// Ok, the task here is to, Get an arraylist of log data.
// And update some global varibles which are pointers to the last displayed log line.
ArrayList logData = new ArrayList();
try
{
// hb_encode_log.dat is the primary log file. Since .NET can't read this file whilst the CLI is outputing to it (Not even in read only mode),
// we'll need to make a copy of it.
string logFile = Path.Combine(Path.GetTempPath(), read_file);
string logFile2 = Path.Combine(Path.GetTempPath(), "hb_encode_log_AppReadable.dat");
// Make sure the application readable log file does not already exist. FileCopy fill fail if it does.
if (File.Exists(logFile2))
File.Delete(logFile2);
// Copy the log file.
File.Copy(logFile, logFile2);
// Open the copied log file for reading
StreamReader sr = new StreamReader(logFile2);
string line = sr.ReadLine();
while (line != null)
{
if (line.Trim() != "")
logData.Add(line + System.Environment.NewLine);
line = sr.ReadLine();
}
sr.Close();
sr.Dispose();
return logData;
}
catch (Exception exc)
{
MessageBox.Show("Error in readFile() \n Unable to read the log file.\n You may have to restart HandBrake.\n Error Information: \n\n" + exc.ToString(), "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
return null;
}
// Ok, We need to make sure the monitor thread is dead when we close the window.
protected override void OnClosing(CancelEventArgs e)
{
if (monitorFile != null)
monitorFile.Abort();
e.Cancel = true;
this.Hide();
base.OnClosing(e);
}
}
}
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