public IRandomAccessStream CloneStream() { var cloned = new MemoryRandomAccessStream(); CopyTo(cloned); return(cloned); }
/// <summary> /// Share the screenshot with a windows app /// </summary> /// <param name="manuallyInitiated"></param> /// <param name="surface"></param> /// <param name="captureDetails"></param> /// <returns>ExportInformation</returns> public override ExportInformation ExportCapture(bool manuallyInitiated, ISurface surface, ICaptureDetails captureDetails) { var exportInformation = new ExportInformation(Designation, Description); try { var handle = PluginUtils.Host.GreenshotForm.Handle; var exportTarget = Task.Run(async() => { var taskCompletionSource = new TaskCompletionSource <string>(); using (var imageStream = new MemoryRandomAccessStream()) using (var logoStream = new MemoryRandomAccessStream()) using (var thumbnailStream = new MemoryRandomAccessStream()) { var outputSettings = new SurfaceOutputSettings(); outputSettings.PreventGreenshotFormat(); // Create capture for export ImageOutput.SaveToStream(surface, imageStream, outputSettings); imageStream.Position = 0; Log.Info("Created RandomAccessStreamReference for the image"); var imageRandomAccessStreamReference = RandomAccessStreamReference.CreateFromStream(imageStream); RandomAccessStreamReference thumbnailRandomAccessStreamReference; RandomAccessStreamReference logoRandomAccessStreamReference; // Create thumbnail using (var tmpImageForThumbnail = surface.GetImageForExport()) { using (var thumbnail = ImageHelper.CreateThumbnail(tmpImageForThumbnail, 240, 160)) { ImageOutput.SaveToStream(thumbnail, null, thumbnailStream, outputSettings); thumbnailStream.Position = 0; thumbnailRandomAccessStreamReference = RandomAccessStreamReference.CreateFromStream(thumbnailStream); Log.Info("Created RandomAccessStreamReference for the thumbnail"); } } // Create logo using (var logo = GreenshotResources.getGreenshotIcon().ToBitmap()) { using (var logoThumbnail = ImageHelper.CreateThumbnail(logo, 30, 30)) { ImageOutput.SaveToStream(logoThumbnail, null, logoStream, outputSettings); logoStream.Position = 0; logoRandomAccessStreamReference = RandomAccessStreamReference.CreateFromStream(logoStream); Log.Info("Created RandomAccessStreamReference for the logo"); } } string applicationName = null; var dataTransferManagerHelper = new DataTransferManagerHelper(handle); dataTransferManagerHelper.DataTransferManager.TargetApplicationChosen += (dtm, args) => { Log.InfoFormat("Trying to share with {0}", args.ApplicationName); applicationName = args.ApplicationName; }; var filename = FilenameHelper.GetFilename(OutputFormat.png, captureDetails); var storageFile = await StorageFile.CreateStreamedFileAsync(filename, async streamedFileDataRequest => { // Information on how was found here: https://socialeboladev.wordpress.com/2013/03/15/how-to-use-createstreamedfileasync/ Log.DebugFormat("Creating deferred file {0}", filename); try { using (var deferredStream = streamedFileDataRequest.AsStreamForWrite()) { await imageStream.CopyToAsync(deferredStream).ConfigureAwait(false); await imageStream.FlushAsync().ConfigureAwait(false); } // Signal that the stream is ready streamedFileDataRequest.Dispose(); } catch (Exception) { streamedFileDataRequest.FailAndClose(StreamedFileFailureMode.Incomplete); } // Signal transfer ready to the await down below taskCompletionSource.TrySetResult(applicationName); }, imageRandomAccessStreamReference).AsTask().ConfigureAwait(false); dataTransferManagerHelper.DataTransferManager.DataRequested += (sender, args) => { var deferral = args.Request.GetDeferral(); args.Request.Data.OperationCompleted += (dp, eventArgs) => { Log.DebugFormat("OperationCompleted: {0}, shared with", eventArgs.Operation); taskCompletionSource.TrySetResult(applicationName); }; var dataPackage = args.Request.Data; dataPackage.Properties.Title = captureDetails.Title; dataPackage.Properties.ApplicationName = "Greenshot"; dataPackage.Properties.Description = "Share a screenshot"; dataPackage.Properties.Thumbnail = thumbnailRandomAccessStreamReference; dataPackage.Properties.Square30x30Logo = logoRandomAccessStreamReference; dataPackage.Properties.LogoBackgroundColor = Color.FromArgb(0xff, 0x3d, 0x3d, 0x3d); dataPackage.SetStorageItems(new List <IStorageItem> { storageFile }); dataPackage.SetBitmap(imageRandomAccessStreamReference); dataPackage.Destroyed += (dp, o) => { Log.Debug("Destroyed."); }; deferral.Complete(); }; dataTransferManagerHelper.ShowShareUi(); return(await taskCompletionSource.Task.ConfigureAwait(false)); } }).Result; if (string.IsNullOrWhiteSpace(exportTarget)) { exportInformation.ExportMade = false; } else { exportInformation.ExportMade = true; exportInformation.DestinationDescription = exportTarget; } } catch (Exception ex) { exportInformation.ExportMade = false; exportInformation.ErrorMessage = ex.Message; } ProcessExport(exportInformation, surface); return(exportInformation); }