/// <summary>
/// Retrieves the display icon of the file.
/// If the file is an image then it will return the image its self (e.g. preview).
/// </summary>
private ImageSource GetDisplayIcon(IconSize size)
{
if (Interop.Shell.Exists(FullName))
{
if (IsImage)
{
try
{
if (GetFileSize(FullName) > 0)
{
BitmapImage img = new BitmapImage();
img.BeginInit();
img.CacheOption = BitmapCacheOption.OnLoad;
img.UriSource = new Uri(FullName);
int dSize = 32;
if (size == IconSize.ExtraLarge)
{
dSize = 48;
}
Interop.Shell.TransformToPixels(dSize, dSize, out dSize, out dSize);
img.DecodePixelWidth = dSize;
img.EndInit();
img.Freeze();
return(img);
}
else
{
return(handleThumbnailError(size));
}
}
catch
{
return(handleThumbnailError(size));
}
}
else
{
// This will attempt to get the icon - if it fails the default icon will be returned.
return(IconImageConverter.GetImageFromAssociatedIcon(FullName, size));
}
}
else
{
return(IconImageConverter.GetDefaultIcon());
}
}
private ImageSource handleThumbnailError(IconSize size)
{
if (_imageReloadAttempts < MAX_IMAGE_RELOAD_ATTEMPTS)
{
// retry soon because this file might still be writing to disk
DispatcherTimer iconcheck = new DispatcherTimer(DispatcherPriority.Background, Application.Current.Dispatcher);
iconcheck.Interval = new TimeSpan(0, 0, 1);
iconcheck.Tick += iconcheck_Tick;
iconcheck.Start();
// show the placeholder icon so we don't show multiple icon changes. we'll show the default file icon if we run out of attempts.
return(IconImageConverter.GetDefaultIcon());
}
else
{
// get the default icon for the file
return(IconImageConverter.GetImageFromAssociatedIcon(FullName, size));
}
}
/// <summary>
/// Retrieves the display icon of the file.
/// If the file is an image then it will return the image its self (e.g. preview).
/// </summary>
private ImageSource GetDisplayIcon(int size)
{
if (Interop.Shell.Exists(this.FullName))
{
if (GetFileIsImage(this.FullName))
{
try
{
BitmapImage img = new BitmapImage();
img.BeginInit();
img.UriSource = new Uri(this.FullName);
img.CacheOption = BitmapCacheOption.OnLoad;
int dSize = 32;
if (size == 2)
{
dSize = 48;
}
Interop.Shell.TransformToPixels(dSize, dSize, out dSize, out dSize);
img.DecodePixelWidth = dSize;
img.EndInit();
img.Freeze();
return(img);
}
catch
{
return(IconImageConverter.GetImageFromAssociatedIcon(this.FullName, size));
}
}
else
{
// This will attempts to get the icon via AppGrabber - if it fails the default icon will be returned.
return(IconImageConverter.GetImageFromAssociatedIcon(this.FullName, size));
}
}
else
{
return(IconImageConverter.GetDefaultIcon());
}
}
