private void DisplayImageTimerTick(object sender, EventArgs e)
{
try
{
string path = this.photoRepository.NextPhotoFilePath;
ICollageView view = this.GetNextView();
var control = new ImageDisplayUserControl(path, this);
view.ImageCanvas.Children.Add(control);
this.imageQueue.Enqueue(control);
if (this.imageQueue.Count > this.MaxInQueue)
{
this.RemoveImageFromQueue(view);
}
this.SetUserControlPosition(control, view);
}
catch (Exception ex)
{
this.controller.HandleError(ex);
this.controller.Shutdown();
}
}
private void RemoveImageFromQueue(ICollageView view)
{
ImageDisplayUserControl control;
if (this.imageQueue.TryDequeue(out control))
{
Action <ImageDisplayUserControl, ICollageView> action = this.RemoveImageFromPanel;
control.FadeOutImage(action, view);
}
}
private void RemoveImageFromPanel(ImageDisplayUserControl control, ICollageView view)
{
try
{
if (view.ImageCanvas.Children.Contains(control))
{
view.ImageCanvas.Children.Remove(control);
}
}
catch (Exception ex)
{
this.controller.HandleError(ex);
}
}
private void SetUserControlPosition(UIElement control, ICollageView view)
{
var positioner = new ImagePositioner(this, control, view);
positioner.Position();
}
public void FadeOutImage(Action <ImageDisplayUserControl, ICollageView> onCompletedAction, ICollageView view)
{
try
{
var storyboard = new Storyboard();
var duration = new TimeSpan(0, 0, 1);
var animation
= new DoubleAnimation
{
From = 1.0,
To = 0.0,
Duration = new Duration(duration)
};
storyboard.Completed += delegate { onCompletedAction(this, view); };
Storyboard.SetTargetName(animation, this.MainBorder.Name);
Storyboard.SetTargetProperty(animation, new PropertyPath(OpacityProperty));
storyboard.Children.Add(animation);
storyboard.Begin(this);
}
catch (Exception ex)
{
this.presenter.HandleError(ex);
}
}
public ImagePositioner(CollagePresenter presenterToUse, UIElement controlToPosition, ICollageView view)
{
this.presenter = presenterToUse;
this.control = controlToPosition;
this.control.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
this.controlWidth = Convert.ToInt32(this.control.DesiredSize.Width);
this.controlHeight = Convert.ToInt32(this.control.DesiredSize.Height);
this.viewportHeight = Convert.ToInt32(view.WindowActualHeight);
this.viewportWidth = Convert.ToInt32(view.WindowActualWidth);
}
