/// <summary>
/// Pushes the given item to the worker queue. Items with high priority are renderer
/// or gallery items, ie. large images in gallery and pane views and images requested
/// by custom renderers. Items with 0 priority are regular thumbnails.
/// </summary>
/// <param name="item">The item to add to the worker queue.</param>
/// <param name="priority">Priority of the item in the queue.</param>
private void RunWorker(CacheRequest item, int priority)
{
// Get the current synchronization context
if (context == null)
{
context = SynchronizationContext.Current;
}
// Already being processed?
if (item.RequestType == RequestType.Thumbnail)
{
if (processing.ContainsKey(item.Guid))
{
return;
}
else
{
processing.Add(item.Guid, false);
}
}
else if (item.RequestType == RequestType.Renderer)
{
if (processingRendererItem == item.Guid)
{
return;
}
else
{
bw.CancelAsync(priority);
processingRendererItem = item.Guid;
}
}
else if (item.RequestType == RequestType.Gallery)
{
if (processingGalleryItem == item.Guid)
{
return;
}
else
{
bw.CancelAsync(priority);
processingGalleryItem = item.Guid;
}
}
// Raise the ThumbnailCaching event
if (mImageListView != null)
{
mImageListView.OnThumbnailCachingInternal(item.Guid, item.Size);
}
// Add the item to the queue for processing
bw.RunWorkerAsync(item, priority, item.RequestType != RequestType.Thumbnail);
}
/// <summary>
/// Pushes the given item to the worker queue.
/// </summary>
/// <param name="item">The cache item.</param>
private void RunWorker(CacheRequest item)
{
// Get the current synchronization context
if (context == null)
{
context = SynchronizationContext.Current;
}
// Already being processed?
if (processing.ContainsKey(item.Guid))
{
return;
}
else
{
processing.Add(item.Guid, false);
}
// Add the item to the queue for processing
bw.RunWorkerAsync(item);
}
/// <summary>
/// Pushes the given item to the worker queue.
/// </summary>
/// <param name="extension">File extension.</param>
private void RunWorker(string extension)
{
// Get the current synchronization context
if (context == null)
{
context = SynchronizationContext.Current;
}
// Already being processed?
if (processing.ContainsKey(extension))
{
return;
}
else
{
processing.Add(extension, false);
}
// Add the item to the queue for processing
bw.RunWorkerAsync(extension);
}
