public void Prepare(string path, ContextObject context)
{
_context = context;
_path = path;
var width = 800d;
var height = 600d;
var pages = GhostScriptWrapper.GetPageSizes(path);
pages?.ForEach(p =>
{
width = Math.Max(width, p.Width);
height = Math.Max(height, p.Height);
});
context.SetPreferredSizeFit(new Size(width, height), 0.8);
}
public void View(string path, ContextObject context)
{
_pdfControl = new PdfViewerControl();
context.ViewerContent = _pdfControl;
_buffer = GhostScriptWrapper.ConvertToPdf(path);
if (_buffer == null || _buffer.Length == 0)
{
context.ViewerContent = new Label {
Content = "Conversion to PDF failed."
};
context.IsBusy = false;
return;
}
Exception exception = null;
_pdfControl.Dispatcher.BeginInvoke(new Action(() =>
{
try
{
_pdfControl.LoadPdf(_buffer);
context.Title = $"1 / {_pdfControl.TotalPages}: {Path.GetFileName(path)}";
_pdfControl.CurrentPageChanged += UpdateWindowCaption;
context.IsBusy = false;
}
catch (Exception e)
{
exception = e;
}
}), DispatcherPriority.Loaded).Wait();
if (exception != null)
{
ExceptionDispatchInfo.Capture(exception).Throw();
}
}