private void AboutPage_Loaded(object sender, RoutedEventArgs e)
{
EnterAnimation.Begin();
}
private async Task Initialize()
{
try
{
ExitLocker = new ManualResetEvent(false);
Cancellation = new CancellationTokenSource();
LoadQueue = new Queue <int>();
Behavior.Attach(Flip);
if (await FileSystemStorageItemBase.OpenAsync(Path.GetDirectoryName(SelectedPhotoFile.Path)) is FileSystemStorageFolder Item)
{
FileSystemStorageFile[] PictureFileList = (await Item.GetChildItemsAsync(SettingControl.IsDisplayHiddenItem, SettingControl.IsDisplayProtectedSystemItems, Filter: ItemFilters.File, AdvanceFilter: (Name) =>
{
string Extension = Path.GetExtension(Name);
return(Extension.Equals(".png", StringComparison.OrdinalIgnoreCase) || Extension.Equals(".jpg", StringComparison.OrdinalIgnoreCase) || Extension.Equals(".bmp", StringComparison.OrdinalIgnoreCase));
})).Cast <FileSystemStorageFile>().ToArray();
if (PictureFileList.Length == 0)
{
QueueContentDialog Dialog = new QueueContentDialog
{
Title = Globalization.GetString("Common_Dialog_ErrorTitle"),
Content = Globalization.GetString("Queue_Dialog_ImageReadError_Content"),
CloseButtonText = Globalization.GetString("Common_Dialog_GoBack")
};
_ = await Dialog.ShowAsync();
Frame.GoBack();
}
else
{
int LastSelectIndex = Array.FindIndex(PictureFileList, (Photo) => Photo.Path.Equals(SelectedPhotoFile.Path, StringComparison.OrdinalIgnoreCase));
if (LastSelectIndex < 0 || LastSelectIndex >= PictureFileList.Length)
{
LastSelectIndex = 0;
}
PhotoCollection = new ObservableCollection <PhotoDisplaySupport>(PictureFileList.Select((Item) => new PhotoDisplaySupport(Item)));
Flip.ItemsSource = PhotoCollection;
if (!await PhotoCollection[LastSelectIndex].ReplaceThumbnailBitmapAsync())
{
CouldnotLoadTip.Visibility = Visibility.Visible;
}
for (int i = LastSelectIndex - 5 > 0 ? LastSelectIndex - 5 : 0; i <= (LastSelectIndex + 5 < PhotoCollection.Count - 1 ? LastSelectIndex + 5 : PhotoCollection.Count - 1) && !Cancellation.IsCancellationRequested; i++)
{
await PhotoCollection[i].GenerateThumbnailAsync();
}
if (!Cancellation.IsCancellationRequested)
{
Flip.SelectedIndex = LastSelectIndex;
Flip.SelectionChanged += Flip_SelectionChanged;
Flip.SelectionChanged += Flip_SelectionChanged1;
EnterAnimation.Begin();
}
}
}
else
{
throw new FileNotFoundException();
}
}
catch (Exception ex)
{
CouldnotLoadTip.Visibility = Visibility.Visible;
LogTracer.Log(ex, "An error was threw when initialize PhotoViewer");
}
finally
{
ExitLocker.Set();
}
}