public ScannedImageSource Scan() { var source = new ScannedImageSource.Concrete(); Task.Factory.StartNew(() => { for (int i = 0; i < ImageCount; i++) { Thread.Sleep(500); source.Put(MakeImage()); } source.Done(); }, TaskCreationOptions.LongRunning); return(source); }
public ScannedImageSource Scan() { if (!IsSupported) { throw new DriverNotSupportedException(); } if (ScanProfile == null) { throw new InvalidOperationException("IScanDriver.ScanProfile must be specified before calling Scan()."); } if (ScanParams == null) { throw new InvalidOperationException("IScanDriver.ScanParams must be specified before calling Scan()."); } if (ScanDevice == null) { throw new InvalidOperationException("IScanDriver.ScanDevice must be specified before calling Scan()."); } if (DialogParent == null && !ScanParams.NoUI) { throw new InvalidOperationException("IScanDriver.DialogParent must be specified before calling Scan() without NoUI."); } var source = new ScannedImageSource.Concrete(); Task.Factory.StartNew(async() => { try { await ScanInternal(source); source.Done(); } catch (ScanDriverException e) { source.Error(e); } catch (FaultException <ScanDriverExceptionDetail> e) { source.Error(e.Detail.Exception); } catch (Exception e) { source.Error(new ScanDriverUnknownException(e)); } }, TaskCreationOptions.LongRunning); return(source); }
public ScannedImageSource Import(string filePath, ImportParams importParams, ProgressHandler progressCallback, CancellationToken cancelToken) { var source = new ScannedImageSource.Concrete(); Task.Factory.StartNew(() => { try { if (cancelToken.IsCancellationRequested) { source.Done(); return; } Bitmap toImport; try { toImport = new Bitmap(filePath); } catch (Exception e) { Log.ErrorException("Error importing image: " + filePath, e); // Handle and notify the user outside the method so that errors importing multiple files can be aggregated throw; } using (toImport) { int frameCount = toImport.GetFrameCount(FrameDimension.Page); int i = 0; foreach (var frameIndex in importParams.Slice.Indices(frameCount)) { progressCallback(i++, frameCount); if (cancelToken.IsCancellationRequested) { source.Done(); return; } toImport.SelectActiveFrame(FrameDimension.Page, frameIndex); var image = new ScannedImage(toImport, ScanBitDepth.C24Bit, IsLossless(toImport.RawFormat), -1); if (!importParams.NoThumbnails) { image.SetThumbnail(thumbnailRenderer.RenderThumbnail(toImport)); } if (importParams.DetectPatchCodes) { image.PatchCode = PatchCodeDetector.Detect(toImport); } source.Put(image); } progressCallback(frameCount, frameCount); } source.Done(); } catch (Exception e) { source.Error(e); } }, TaskCreationOptions.LongRunning); return(source); }
public ScannedImageSource Import(string filePath, ImportParams importParams, ProgressHandler progressCallback, CancellationToken cancelToken) { var source = new ScannedImageSource.Concrete(); Task.Factory.StartNew(async() => { if (cancelToken.IsCancellationRequested) { source.Done(); } int passwordAttempts = 0; bool aborted = false; int i = 0; try { PdfDocument document = PdfReader.Open(filePath, PdfDocumentOpenMode.Import, args => { if (!pdfPasswordProvider.ProvidePassword(Path.GetFileName(filePath), passwordAttempts++, out args.Password)) { args.Abort = true; aborted = true; } }); if (passwordAttempts > 0 && !document.SecuritySettings.HasOwnerPermissions && !document.SecuritySettings.PermitExtractContent) { errorOutput.DisplayError(string.Format(MiscResources.PdfNoPermissionToExtractContent, Path.GetFileName(filePath))); source.Done(); } var pages = importParams.Slice.Indices(document.PageCount) .Select(index => document.Pages[index]) .TakeWhile(page => { progressCallback(i++, document.PageCount); return(!cancelToken.IsCancellationRequested); }); if (document.Info.Creator != MiscResources.NAPS2 && document.Info.Author != MiscResources.NAPS2) { pdfRenderer.ThrowIfCantRender(); foreach (var page in pages) { source.Put(await ExportRawPdfPage(page, importParams)); } } else { foreach (var page in pages) { await GetImagesFromPage(page, importParams, source); } } } catch (ImageRenderException e) { errorOutput.DisplayError(string.Format(MiscResources.ImportErrorNAPS2Pdf, Path.GetFileName(filePath))); Log.ErrorException("Error importing PDF file.", e); } catch (Exception e) { if (!aborted) { errorOutput.DisplayError(string.Format(MiscResources.ImportErrorCouldNot, Path.GetFileName(filePath))); Log.ErrorException("Error importing PDF file.", e); } } finally { source.Done(); } }, TaskCreationOptions.LongRunning); return(source); }