public void BeginSlideShow()
{
// Reset Data
CurrentPicture = null;
ImagePaths.Clear();
// Validate SelectedPath
var directories = SelectedPath.Split('%');
foreach (var directory in directories)
{
if (!Directory.Exists(directory))
{
MessageBox.Show("A specified file path is not a real directory. Please ammend.", "Path Not Found", MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
}
// Load Files
var files = new List <string>();
foreach (var directory in directories)
{
LoadFiles(directory, ref files);
}
foreach (var file in files)
{
ImagePaths.Add(file);
}
// Shuffle
ImagePaths.Shuffle();
// TODO: Check speedy loading
// TODO: settings
// Progress
SlideshowProgress(null, null);
}
private void SlideshowProgress(object sender, EventArgs e)
{
_dispatcherTimer.Stop();
_dispatcherTimer.Interval = new TimeSpan(0, 0, 0, 0, 3500);
if (CurrentPictureIndex >= ImagePaths.Count)
{
CurrentPictureIndex = 0;
ImagePaths.Shuffle();
}
WriteDebugEntry("Loading Image " + ImagePaths[CurrentPictureIndex]);
BitmapImage newImage = null;
try
{
newImage = new BitmapImage(new Uri(ImagePaths[CurrentPictureIndex]));
CurrentPicture = newImage;
}
catch (NotSupportedException)
{
WriteDebugEntry("Unable to load image.. skipping");
CurrentPictureIndex++;
_dispatcherTimer.Interval = new TimeSpan(0, 0, 0, 0, 1);
_dispatcherTimer.Start();
}
try
{
using (var reader = new ExifReader(ImagePaths[CurrentPictureIndex]))
{
object orignt = null;
var orientation = reader.GetTagValue(ExifTags.Orientation, out orignt);
if (orignt != null && ((ushort)orignt != 1))
{
var transformBitmap = new TransformedBitmap();
transformBitmap.BeginInit();
transformBitmap.Source = newImage;
switch ((ushort)orignt)
{
case 8:
WriteDebugEntry(" Image required rotation :: RotateTransform(-90)");
transformBitmap.Transform = new RotateTransform(-90);
break;
case 6:
WriteDebugEntry(" Image required rotation :: RotateTransform(90)");
transformBitmap.Transform = new RotateTransform(90);
break;
default:
break;
}
transformBitmap.EndInit();
CurrentPicture = ((BitmapSource)transformBitmap).ToBitmapImage();
}
}
}
catch (ExifLibException ex)
{
}
switch (ImagePaths[CurrentPictureIndex].Split('.').Last().ToLowerInvariant())
{
case "gif":
WriteDebugEntry(" Image is gif :: setting up gif looping");
TimeSpan duration = TimeSpan.FromTicks(0);
var gif = GifBitmapDecoder.Create(new Uri(ImagePaths[CurrentPictureIndex]), BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default);
var delay = 0;
foreach (var frame in gif.Frames)
{
frame.Freeze();
delay += (ushort)((BitmapMetadata)frame.Metadata).GetQuery("/grctlext/Delay");
}
duration = TimeSpan.FromMilliseconds(delay * 10);
if (duration < TimeSpan.FromSeconds(5))
{
_dispatcherTimer.Interval = TimeSpan.FromTicks(duration.Ticks * 3);
}
else if (duration < TimeSpan.FromSeconds(10))
{
_dispatcherTimer.Interval = TimeSpan.FromTicks(duration.Ticks * 2);
}
else
{
_dispatcherTimer.Interval = duration;
}
break;
}
CurrentPictureIndex++;
_dispatcherTimer.Start();
}