/// <summary> /// Remove cache file older than specified date /// </summary> public static void RemoveCacheFiles(TimeSpan OlderThanDays) { try { //ExStart:RemoveCacheFilesTimeSpan // Setup GroupDocs.Viewer config ViewerConfig config = Utilities.GetConfigurations(); // Init viewer image or html handler ViewerImageHandler viewerImageHandler = new ViewerImageHandler(config); //Clear files from cache older than specified time interval viewerImageHandler.ClearCache(OlderThanDays); //ExEnd:RemoveCacheFilesTimeSpan } catch (System.Exception exp) { Console.WriteLine(exp.Message); } }
public ActionResult Get(int?width, int?height, string file, int page, string watermarkText, int?watermarkColor, WatermarkPosition?watermarkPosition, int?watermarkWidth, byte watermarkOpacity, int?rotate, int?zoom) { if (Utils.IsValidUrl(file)) { file = Utils.DownloadToStorage(file); } ViewerImageHandler handler = Utils.CreateViewerImageHandler(); if (rotate.HasValue) { if (rotate.Value > 0) { handler.ClearCache(file); } } ImageOptions options = new ImageOptions(); options.PageNumbersToRender = new List <int>(new int[] { page }); options.PageNumber = page; options.CountPagesToRender = 1; if (Path.GetExtension(file).ToLower().StartsWith(".xls")) { options.CellsOptions.OnePagePerSheet = false; options.CellsOptions.CountRowsPerPage = 150; } if (watermarkText != "") { options.Watermark = Utils.GetWatermark(watermarkText, watermarkColor, watermarkPosition, watermarkWidth, watermarkOpacity); } if (width.HasValue) { int w = Convert.ToInt32(width); if (zoom.HasValue) { w = w + zoom.Value; } options.Width = w; } if (height.HasValue) { if (zoom.HasValue) { options.Height = options.Height + zoom.Value; } } if (rotate.HasValue) { if (rotate.Value > 0) { if (width.HasValue) { int side = options.Width; DocumentInfoContainer documentInfoContainer = handler.GetDocumentInfo(file); int pageAngle = documentInfoContainer.Pages[page - 1].Angle; if (pageAngle == 90 || pageAngle == 270) { options.Height = side; } else { options.Width = side; } } options.Transformations = Transformation.Rotate; handler.RotatePage(file, new RotatePageOptions(page, rotate.Value)); } } else { options.Transformations = Transformation.None; handler.RotatePage(file, new RotatePageOptions(page, 0)); } using (new InterProcessLock(file)) { List <PageImage> list = handler.GetPages(file, options); PageImage pageImage = list.Single(_ => _.PageNumber == page); return(File(pageImage.Stream, "image/png")); } }
public HttpResponseMessage Get(int?width, string file, int page, string watermarkText, int?watermarkColor, WatermarkPosition?watermarkPosition, int?watermarkWidth, byte watermarkOpacity, int?rotate, int?zoom, int?height = null) { if (Utils.IsValidUrl(file)) { file = Utils.DownloadToStorage(file); } ViewerImageHandler handler = Utils.CreateViewerImageHandler(); if (rotate.HasValue) { if (rotate.Value > 0) { handler.ClearCache(file); } } ImageOptions options = new ImageOptions(); options.PageNumbersToRender = new List <int>(new int[] { page }); options.PageNumber = page; options.CountPagesToRender = 1; if (Path.GetExtension(file).ToLower().StartsWith(".xls")) { options.CellsOptions.OnePagePerSheet = false; options.CellsOptions.CountRowsPerPage = 150; } if (watermarkText != "") { options.Watermark = Utils.GetWatermark(watermarkText, watermarkColor, watermarkPosition, watermarkWidth, watermarkOpacity); } if (width.HasValue) { int w = Convert.ToInt32(width); if (zoom.HasValue) { w = w + zoom.Value; } options.Width = w; } if (height.HasValue) { if (zoom.HasValue) { options.Height = options.Height + zoom.Value; } } if (rotate.HasValue) { if (rotate.Value > 0) { if (width.HasValue) { int side = options.Width; DocumentInfoContainer documentInfoContainer = handler.GetDocumentInfo(file); int pageAngle = documentInfoContainer.Pages[page - 1].Angle; if (pageAngle == 90 || pageAngle == 270) { options.Height = side; } else { options.Width = side; } } options.Transformations = Transformation.Rotate; handler.RotatePage(file, new RotatePageOptions(page, rotate.Value)); } } else { options.Transformations = Transformation.None; handler.RotatePage(file, new RotatePageOptions(page, 0)); } List <PageImage> list = handler.GetPages(file, options); PageImage pageImage = list.Single(_ => _.PageNumber == page); Stream stream = pageImage.Stream; var result = new HttpResponseMessage(HttpStatusCode.OK); Image image = Image.FromStream(stream); MemoryStream memoryStream = new MemoryStream(); image.Save(memoryStream, ImageFormat.Jpeg); result.Content = new ByteArrayContent(memoryStream.ToArray()); result.Content.Headers.ContentType = new MediaTypeHeaderValue("image/jpeg"); return(result); }