public async Task Hide()
{
((App)(App.Current)).BackRequested -= PhotoPreviewView_BackRequested;
SizeChanged -= PhotoPreviewView_SizeChanged;
ImageRoot.SizeChanged -= ImageRoot_SizeChanged;
IsVisible = false;
var splitChar = _photo.IsLocal ? '\\' : '/';
var filename = (_photo.Uri.Split(splitChar).LastOrDefault()?.Split('.').FirstOrDefault() ?? "");
var saveInkTask = Inker.SaveInkToFile($"ink_{filename}.gif");
var saveThumbnailTask = InkHelpers.RenderImageWithInkToFileAsync(Inker, await _file.OpenReadAsync(), $"thumb_{filename}.jpg");
var closingAnimationTask = Root.Scale(1.2f, 1.2f, (float)ActualWidth / 2, (float)ActualHeight / 2).Fade(0).StartAsync();
await Task.WhenAll(saveInkTask, closingAnimationTask, saveThumbnailTask);
_photo.InkUri = saveInkTask.Result ?? _photo.InkUri;
_photo.ThumbnailUri = saveThumbnailTask.Result ?? _photo.ThumbnailUri;
Root.Visibility = Visibility.Collapsed;
_canvasImage.Dispose();
_canvasImage = null;
_photo = null;
_file = null;
ImageCanvas.Invalidate();
FinishedHiding?.Invoke(this, null);
_tags.Clear();
_knownFaces.Clear();
_facePanels.Clear();
FaceCanvas.Children.Clear();
if (Description != null)
{
Description.Text = "";
}
_effectsGenerator = null;
FiltersButton.IsChecked = false;
DetailsButton.IsChecked = false;
InkButton.IsChecked = false;
Inker.InkPresenter.StrokeContainer.Clear();
_photoInfoInitialized = false;
if (EffectsView != null)
{
EffectsView.Visibility = Visibility.Collapsed;
_effects.Clear();
}
}
private async Task LoadEffects()
{
if (_effectsGenerator == null)
{
var stream = await _file.OpenReadAsync();
_effectsGenerator = await EffectsGenerator.LoadImage(stream);
}
if (_effects.Count == 0)
{
foreach (var value in Enum.GetValues(typeof(EffectType)))
{
_effects.Add((EffectType)value);
}
}
}
public static async Task <EffectsGenerator> LoadImage(IRandomAccessStream stream)
{
EffectsGenerator ef = new EffectsGenerator();
ef._canvasDevice = new CanvasDevice();
ef._canvasBitmap = await CanvasBitmap.LoadAsync(ef._canvasDevice, stream);
var imgRect = new Rect();
var width = ef._canvasBitmap.Size.Width;
var height = ef._canvasBitmap.Size.Height;
if (width > height)
{
imgRect.Width = Math.Round(width * 150 / height);
imgRect.Height = 150;
imgRect.X = -((imgRect.Width - imgRect.Height) / 2);
imgRect.Y = 0;
}
else if (height > width)
{
imgRect.Width = 150;
imgRect.Height = Math.Round(height * 150 / width);
imgRect.X = 0;
imgRect.Y = -((imgRect.Height - imgRect.Width) / 2);
}
else
{
imgRect.Width = 150;
imgRect.Height = 150;
imgRect.X = 0;
imgRect.Y = 0;
}
ef._imgRect = imgRect;
ef._canvasRenderer = new CanvasRenderTarget(ef._canvasDevice, 150, 150, ef._canvasBitmap.Dpi);
return(ef);
}
