private void InitComposer(IBackgroundTaskContext context)
{
const float WGT_SCAN = 10f;
const float WGT_INIT = 90f;
List <IPresentationImage> queue = new List <IPresentationImage>();
int count = 0;
int total = this.Context.ClipboardItems.Count;
context.ReportProgress(new BackgroundTaskProgress(0, SR.MessageScanningClipboard));
foreach (IClipboardItem item in this.Context.ClipboardItems)
{
if (item.Item is IPresentationImage)
{
Enqueue(queue, (IPresentationImage)item.Item);
}
else if (item.Item is IDisplaySet)
{
Enqueue(queue, (IDisplaySet)item.Item);
}
else if (item.Item is IImageSet)
{
Enqueue(queue, (IImageSet)item.Item);
}
count++;
if (context.CancelRequested)
{
break;
}
context.ReportProgress(new BackgroundTaskProgress((int)(WGT_SCAN * count / total), SR.MessageScanningClipboard));
}
if (!context.CancelRequested)
{
StudyComposerComponent composer = new StudyComposerComponent();
total = queue.Count;
for (int n = 0; n < queue.Count; n++)
{
if (context.CancelRequested)
{
break;
}
IPresentationImage image = queue[n];
context.ReportProgress(new BackgroundTaskProgress((int)(WGT_SCAN + WGT_INIT * n / total), SR.MessageReadingImages));
composer.InsertImage(image);
}
if (!context.CancelRequested)
{
context.ReportProgress(new BackgroundTaskProgress(100, SR.Done));
_composer = composer;
context.Complete(null);
}
}
if (context.CancelRequested)
{
context.Cancel();
}
}