private async Task Initialize()
{
try
{
ExitLocker = new ManualResetEvent(false);
Cancellation = new CancellationTokenSource();
LoadQueue = new Queue <int>();
MainPage.ThisPage.IsAnyTaskRunning = true;
Behavior.Attach(Flip);
List <FileSystemStorageItemBase> FileList = FileSystemStorageItemBase.Open(Path.GetDirectoryName(SelectedPhotoPath), ItemFilters.Folder).GetChildrenItems(SettingControl.IsDisplayHiddenItem, ItemFilters.File).Where((Item) => Item.Type.Equals(".png", StringComparison.OrdinalIgnoreCase) || Item.Type.Equals(".jpg", StringComparison.OrdinalIgnoreCase) || Item.Type.Equals(".bmp", StringComparison.OrdinalIgnoreCase)).ToList();
if (FileList.Count == 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().ConfigureAwait(true);
Frame.GoBack();
}
else
{
int LastSelectIndex = FileList.FindIndex((Photo) => Photo.Path.Equals(SelectedPhotoPath, StringComparison.OrdinalIgnoreCase));
if (LastSelectIndex < 0 || LastSelectIndex >= FileList.Count)
{
LastSelectIndex = 0;
}
PhotoCollection = new ObservableCollection <PhotoDisplaySupport>(FileList.Select((Item) => new PhotoDisplaySupport(Item)));
Flip.ItemsSource = PhotoCollection;
if (!await PhotoCollection[LastSelectIndex].ReplaceThumbnailBitmapAsync().ConfigureAwait(true))
{
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().ConfigureAwait(true);
}
if (!Cancellation.IsCancellationRequested)
{
Flip.SelectedIndex = LastSelectIndex;
Flip.SelectionChanged += Flip_SelectionChanged;
Flip.SelectionChanged += Flip_SelectionChanged1;
await EnterAnimation.BeginAsync().ConfigureAwait(true);
}
}
}
catch (Exception ex)
{
CouldnotLoadTip.Visibility = Visibility.Visible;
LogTracer.Log(ex, "An error was threw when initialize PhotoViewer");
}
finally
{
MainPage.ThisPage.IsAnyTaskRunning = false;
ExitLocker.Set();
}
}
private async Task Initialize()
{
if (IsNavigateToCropperPage)
{
IsNavigateToCropperPage = false;
await PhotoCollection[Flip.SelectedIndex].UpdateImage().ConfigureAwait(true);
return;
}
try
{
ExitLocker = new ManualResetEvent(false);
Cancellation = new CancellationTokenSource();
LoadQueue = new Queue <int>();
MainPage.ThisPage.IsAnyTaskRunning = true;
Behavior.Attach(Flip);
List <FileSystemStorageItemBase> FileList = WIN_Native_API.GetStorageItems(FileControlInstance.CurrentFolder, false, ItemFilters.File).Where((Item) => Item.Type.Equals(".png", StringComparison.OrdinalIgnoreCase) || Item.Type.Equals(".jpg", StringComparison.OrdinalIgnoreCase) || Item.Type.Equals(".bmp", StringComparison.OrdinalIgnoreCase)).ToList();
int LastSelectIndex = FileList.FindIndex((Photo) => Photo.Name == SelectedPhotoName);
if (LastSelectIndex < 0 || LastSelectIndex >= FileList.Count)
{
LastSelectIndex = 0;
}
if (FileList.Count == 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().ConfigureAwait(true);
FileControlInstance.Nav.GoBack();
return;
}
PhotoCollection = new ObservableCollection <PhotoDisplaySupport>(FileList.Select((Item) => new PhotoDisplaySupport(Item)));
Flip.ItemsSource = PhotoCollection;
if (!await PhotoCollection[LastSelectIndex].ReplaceThumbnailBitmapAsync().ConfigureAwait(true))
{
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().ConfigureAwait(true);
}
if (!Cancellation.IsCancellationRequested)
{
Flip.SelectedIndex = LastSelectIndex;
Flip.SelectionChanged += Flip_SelectionChanged;
Flip.SelectionChanged += Flip_SelectionChanged1;
await EnterAnimation.BeginAsync().ConfigureAwait(true);
}
}
catch (Exception ex)
{
ExceptionTracer.RequestBlueScreen(ex);
}
finally
{
MainPage.ThisPage.IsAnyTaskRunning = false;
ExitLocker.Set();
}
}