/// <summary>
/// Loads image at specified index
/// </summary>
/// <param name="index">The index of file to load from Pics</param>
internal static async void Pic(int index)
{
#if DEBUG
var stopWatch = new Stopwatch();
stopWatch.Start();
#endif
// Declare variable to be used to set image source
BitmapSource bitmapSource;
// Error checking to fix rare cases of crashing
if (Pics.Count < index)
{
bitmapSource = await PicErrorFix(index).ConfigureAwait(true);
if (bitmapSource == null)
{
/// Try to recover
/// TODO needs testing
Reload(true);
return;
}
}
else if (File.Exists(Pics[index])) // Checking if file exists fixes rare crashes
{
/// Use the Load() function load image from memory if available
/// if not, it will be null
bitmapSource = Preloader.Load(Pics[index]);
}
else
{
/// Try to reload from backup if file does not exist
/// TODO needs testing
Reload(true);
return;
}
// Initate loading behavior, if needed
if (bitmapSource == null)
{
// Set loading from translation service
SetLoadingString();
// Show a thumbnail while loading
var thumb = GetThumb(index, true);
if (thumb != null && Properties.Settings.Default.PicGallery != 2)
{
// Don't allow image size to stretch the whole screen
if (xWidth == 0)
{
var size = ImageDecoder.ImageSize(Pics[index]);
if (size.HasValue)
{
FitImage(size.Value.Width, size.Value.Height);
}
else
{
LoadWindows.GetMainWindow.MainImage.Width = LoadWindows.GetMainWindow.MinWidth;
LoadWindows.GetMainWindow.MainImage.Height = LoadWindows.GetMainWindow.MinHeight;
}
}
else
{
LoadWindows.GetMainWindow.MainImage.Width = xWidth;
LoadWindows.GetMainWindow.MainImage.Height = xHeight;
}
LoadWindows.GetMainWindow.MainImage.Source = thumb;
}
// Dissallow changing image while loading
CanNavigate = false;
// Get it!
await Preloader.Add(Pics[index]).ConfigureAwait(true);
// Retry
bitmapSource = Preloader.Load(Pics[index]);
if (bitmapSource == null)
{
// Attempt to fix it
bitmapSource = await PicErrorFix(index).ConfigureAwait(true);
// If pic is still null, image can't be rendered
if (bitmapSource == null)
{
// Clean up
Pics.RemoveAt(index);
Preloader.Remove(index);
// Sync with gallery, if needed
if (GetPicGallery != null)
{
if (GetPicGallery.grid.Children.Count > index)
{
GetPicGallery.grid.Children.RemoveAt(index);
}
}
// Check if images still exists
if (Pics.Count == 0)
{
Unload();
return;
}
/// Retry
/// TODO needs testing
CanNavigate = true;
Pic();
return;
}
}
}
// Reset transforms if needed
if (UILogic.TransformImage.Rotation.Flipped || UILogic.TransformImage.Rotation.Rotateint != 0)
{
UILogic.TransformImage.Rotation.Flipped = false;
UILogic.TransformImage.Rotation.Rotateint = 0;
GetImageSettingsMenu.FlipButton.TheButton.IsChecked = false;
LoadWindows.GetMainWindow.MainImage.LayoutTransform = null;
}
// Show the image! :)
LoadWindows.GetMainWindow.MainImage.Source = bitmapSource;
FitImage(bitmapSource.PixelWidth, bitmapSource.PixelHeight);
SetTitleString(bitmapSource.PixelWidth, bitmapSource.PixelHeight, index);
// Scroll to top if scroll enabled
if (IsScrollEnabled)
{
LoadWindows.GetMainWindow.Scroller.ScrollToTop();
}
// Update values
CanNavigate = true;
FolderIndex = index;
FreshStartup = false;
if (LoadWindows.GetImageInfoWindow != null)
{
if (LoadWindows.GetImageInfoWindow.IsVisible)
{
LoadWindows.GetImageInfoWindow.UpdateValues();
}
}
if (Pics.Count > 1)
{
Taskbar.Progress(index, Pics.Count);
// Preload images \\
await Preloader.PreLoad(index).ConfigureAwait(false);
}
RecentFiles.Add(Pics[index]);
#if DEBUG
stopWatch.Stop();
var s = $"Pic(); executed in {stopWatch.Elapsed.TotalMilliseconds} milliseconds";
Trace.WriteLine(s);
#endif
}
