private async Task CreateThumbnails(string selected, AbstractMediaProvider provider)
{
cancellationTokenSource = new CancellationTokenSource();
var token = cancellationTokenSource.Token;
thumbnailGrid.Items.Clear();
fileList = await provider.GetChildEntries(selected);
Array.Sort(fileList, (string s1, string s2) =>
{
int i1, i2;
string s1WithoutExtension = s1.Substring(0, s1.LastIndexOf("."));
string s2WithoutExtension = s2.Substring(0, s2.LastIndexOf("."));
if (Int32.TryParse(s1WithoutExtension, out i1) && Int32.TryParse(s2WithoutExtension, out i2))
{
return(i1.CompareTo(i2));
}
return(s1.CompareTo(s2));
});
try
{
foreach (var file in fileList)
{
var stream = await provider.OpenEntryAsRandomAccessStreamAsync(file);
SoftwareBitmap bitmap = await CreateResizedBitmap(stream, 200, 200);
var source = new SoftwareBitmapSource();
var setSourceTask = source.SetBitmapAsync(bitmap);
var thumbnail = new Thumbnail();
thumbnail.Image.Source = source;
thumbnail.Click += Thumbnail_Click;
thumbnail.Label.Text = ExtractFilename(file);
thumbnail.UserData = file;
token.ThrowIfCancellationRequested();
thumbnailGrid.Items.Add(thumbnail);
await setSourceTask;
await Task.Delay(1);
}
}
catch { }
finally { cancellationTokenSource = null; }
}
public async void SetMediaProvider(AbstractMediaProvider provider)
{
if (this.provider != null)
{
this.provider.Dispose();
}
this.provider = provider;
subFolderListCtrl.Items.Clear();
folderList = await provider.GetFolderEntries();
RebuildSubFolderList();
subFolderListCtrl.SelectedIndex = 0;
imageControl.Visibility = Visibility.Collapsed;
imageControl.AutoEnabled = false;
imageBorder.Visibility = Visibility.Collapsed;
loadingBorder.Visibility = Visibility.Collapsed;
thumbnailGrid.IsEnabled = true;
this.IsEnabled = true;
}
private async Task <Exception> ChangeMediaProvider(AbstractMediaProvider provider)
{
if (this.NavigationPane.SelectedItem is NavigationViewItem selectedItem)
{
if (selectedItem.Content is FolderListItem item)
{
var page = this.thumbnailPages.Find((p) => p.Entry == item.FolderEntry);
if (page != null)
{
page.CancellationToken.Cancel();
}
}
}
FolderReadingDialog dialog = new FolderReadingDialog();
_ = dialog.ShowAsync(ContentDialogPlacement.Popup);
Exception error;
error = await MediaManager.ChangeProvider(provider);
if (error != null)
{
dialog.Hide();
return(error);
}
await this.RebuildSubFolderList(dialog);
GC.Collect();
this.ThumbnailBorder.Opacity = 0;
this.HideImageControl();
this.IsEnabled = true;
dialog.Hide();
return(null);
}
private async void openFileButton_Click(object sender, RoutedEventArgs e)
{
this.IsEnabled = false;
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".zip");
picker.FileTypeFilter.Add(".rar");
picker.FileTypeFilter.Add(".7z");
picker.FileTypeFilter.Add("*");
var selected = await picker.PickSingleFileAsync();
if (selected == null)
{
this.IsEnabled = true;
return;
}
var stream = await selected.OpenStreamForReadAsync();
AbstractMediaProvider provider = null;
try
{
provider = new ArchiveMediaProvider(stream);
}
catch
{
var dialog = new MessageDialog(String.Format("Cannot open file: {0}.", selected.Name), "Error");
await dialog.ShowAsync();
stream.Dispose();
this.IsEnabled = true;
return;
}
filenameTextBlock.Text = selected.Name;
SetMediaProvider(provider);
}
