/// <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);
}
