private void UpdateProgressUI()
{
var albumAbs = string.Format("{0:0.00} MB of {1:0.00} MB", (DownloadData.AlbumBytes / 1024.0f / 1024.0f), (CurrentAlbum.SizeInBytes / 1024.0f / 1024.0f));
var albumProgress = Math.Min(100, (int)(DownloadData.AlbumBytes * 1.0f / CurrentAlbum.SizeInBytes * 100));
ProgressOverallProgressBar.Value = albumProgress;
ProgressOverallValueLabel.Text = string.Format("{0} % ({1})", albumProgress, albumAbs);
var trackTotal = DownloadData.TrackTotalBytes > 0 ? DownloadData.TrackTotalBytes : DownloadData.CurrentTrack.SizeInBytes;
var trackProgress = Math.Min(100, (int)(DownloadData.TrackBytes * 1.0f / trackTotal * 100));
ProgressTrackProgressBar.Value = trackProgress;
ProgressTrackValueLabel.Text = string.Format("{0} % of {1}", trackProgress, DownloadData.CurrentTrack.Title);
TaskbarUtils.SetProgressValue(Handle, (ulong)DownloadData.AlbumBytes, (ulong)CurrentAlbum.SizeInBytes);
}
void TrackDownloadClient_DownloadDataCompleted(object sender, DownloadDataCompletedEventArgs e)
{
if (e.Cancelled)
{
TaskbarUtils.SetProgressState(Handle, TaskbarUtils.ProgressState.NoProgress);
SetFormEnabled(true);
SetDataGridRowColor(Color.LightCoral, null, DownloadData.CurrentTrack.Title);
}
else if (e.Error != null)
{
TaskbarUtils.SetProgressState(Handle, TaskbarUtils.ProgressState.Error);
TaskbarUtils.Flash(Handle);
ShowEx("Failed to download track", e.Error);
TaskbarUtils.SetProgressState(Handle, TaskbarUtils.ProgressState.NoProgress);
SetFormEnabled(true);
}
else
{
if (DownloadData.Step++ == 0)
{
string page = Encoding.ASCII.GetString(e.Result);
var match = TrackUriRegex.Match(page);
if (match.Success)
{
var filepath = match.Groups["file"].Value;
var index = filepath.LastIndexOf('/');
if (index >= 0)
{
DownloadData.Filename = Uri.UnescapeDataString(filepath.Substring(index + 1));
TrackDownloadClient.DownloadDataAsync(new Uri(filepath));
}
}
}
else
{
// write track to disk
File.WriteAllBytes(Path.Combine(DownloadData.FolderPath, DownloadData.Filename), e.Result);
// mark track in list as finished
SetDataGridRowColor(ProgressTrackProgressBar.ForeColor, null, DownloadData.CurrentTrack.Title);
// download next
StartDownload();
}
}
}
private void TracksDownloadButton_Click(object sender, EventArgs e)
{
try
{
// reset track list colors
foreach (DataGridViewRow row in TracksListDataGridView.Rows)
{
SetDataGridRowColor(SystemColors.Control, row, null);
}
// determine and create target output folder
var folder = DownloadLocationTextBox.Text;
if (DownloadCreateSubfolderCheckBox.Checked)
{
var name = CurrentAlbum.Name;
foreach (var c in Path.GetInvalidPathChars())
{
name = name.Replace(c, '_');
}
folder = Path.Combine(folder, name);
}
if (!Directory.Exists(folder))
{
Directory.CreateDirectory(folder);
}
// create object for holding progress relevant data during download
DownloadData = new DownloadProgressData()
{
FolderPath = folder,
RemainingTracks = new List <Track>(CurrentAlbum.Tracks)
};
// deactivate form and start
TaskbarUtils.SetProgressState(Handle, TaskbarUtils.ProgressState.Normal);
TaskbarUtils.SetProgressValue(Handle, 0, (ulong)CurrentAlbum.SizeInBytes);
SetFormEnabled(false);
StartDownload();
}
catch (Exception ex)
{
ShowEx("Failed to start download", ex);
}
}
private void StartDownload()
{
if (DownloadData.RemainingTracks.Count > 0)
{
DownloadData.CurrentTrack = DownloadData.RemainingTracks[0];
DownloadData.RemainingTracks.RemoveAt(0);
DownloadData.TrackBytes = 0;
DownloadData.Step = 0;
UpdateProgressUI();
TrackDownloadClient.DownloadDataAsync(DownloadData.CurrentTrack.Address);
}
else
{
ProgressOverallValueLabel.Text = ProgressTrackValueLabel.Text = "100 %";
ProgressOverallProgressBar.Value = ProgressTrackProgressBar.Value = 100;
SetFormEnabled(true);
TaskbarUtils.SetProgressState(Handle, TaskbarUtils.ProgressState.NoProgress);
TaskbarUtils.Flash(Handle);
}
}