public DecryptResponse Decrypt(DecryptRequest request)
{
if (request == null)
{
throw new ArgumentNullException("request");
}
if (request.DocumentId == null)
{
throw new ArgumentException("documentId must not be null");
}
var cache = ServiceHelper.Cache;
using (var document = DocumentFactory.LoadFromCache(cache, request.DocumentId))
{
DocumentHelper.CheckLoadFromCache(document);
if (!document.Decrypt(request.Password))
{
throw new ServiceException("Incorrect Password", HttpStatusCode.Forbidden);
}
document.SaveToCache();
return(new DecryptResponse {
Document = document
});
}
}
public static GetAnnotationsResponse GetAnnotations(GetAnnotationsRequest request)
{
if (request == null)
{
throw new ArgumentNullException("request");
}
if (string.IsNullOrEmpty(request.DocumentId))
{
throw new ArgumentException("documentId must not be null");
}
if (request.PageNumber < 0)
{
throw new ArgumentException("'pageNumber' must be a value greater than or equal to 0");
}
// If page number is 0, get all annotations
// Now load the document
var cache = ServiceHelper.Cache;
using (var document = DocumentFactory.LoadFromCache(cache, request.DocumentId))
{
DocumentHelper.CheckLoadFromCache(document);
var annCodec = new AnnCodecs();
string annotations = null;
if (request.PageNumber == 0)
{
var containers = document.Annotations.GetAnnotations(request.CreateEmpty);
annotations = annCodec.SaveAllToString(containers, AnnFormat.Annotations);
}
else
{
DocumentHelper.CheckPageNumber(document, request.PageNumber);
var documentPage = document.Pages[request.PageNumber - 1];
var container = documentPage.GetAnnotations(request.CreateEmpty);
if (container != null)
{
annotations = annCodec.SaveToString(container, AnnFormat.Annotations, request.PageNumber);
}
}
return(new GetAnnotationsResponse {
Annotations = annotations
});
}
}
public ParseStructureResponse ParseStructure(ParseStructureRequest request)
{
if (request == null)
{
throw new ArgumentNullException("request");
}
if (string.IsNullOrEmpty(request.DocumentId))
{
throw new ArgumentException("documentId must not be null");
}
// Now load the document
var cache = ServiceHelper.Cache;
using (var document = DocumentFactory.LoadFromCache(cache, request.DocumentId))
{
DocumentHelper.CheckLoadFromCache(document);
if (!document.IsStructureSupported)
{
return(new ParseStructureResponse());
}
if (!document.Structure.IsParsed)
{
document.Structure.ParseBookmarks = request.ParseBookmarks;
document.Structure.ParsePageLinks = request.ParsePageLinks;
document.Structure.Parse();
document.SaveToCache();
}
var pageLinks = new List <DocumentLink[]>();
var bookmarks = new List <DocumentBookmark>();
bookmarks.AddRange(document.Structure.Bookmarks);
foreach (var page in document.Pages)
{
var links = page.GetLinks();
pageLinks.Add(links);
}
return(new ParseStructureResponse
{
Bookmarks = bookmarks.ToArray(),
PageLinks = pageLinks.ToArray()
});
}
}
public GetHistoryResponse GetHistory(GetHistoryRequest request)
{
if (request == null)
{
throw new ArgumentNullException("request");
}
// Must have the documentId you'd like to add annotations to.
// If you only have the document cache URI, DocumentFactory.LoadFromUri needs to be called.
if (string.IsNullOrEmpty(request.DocumentId))
{
throw new ArgumentNullException("documentId");
}
IList <DocumentHistoryItem> items = null;
var cache = ServiceHelper.Cache;
using (var document = DocumentFactory.LoadFromCache(cache, request.DocumentId))
{
// Ensure we have the document.
DocumentHelper.CheckLoadFromCache(document);
DocumentHistory history = document.History;
items = history.GetItems();
if (items != null && request.ClearHistory)
{
history.Clear();
document.SaveToCache();
}
}
if (_loggingDocumentHistory)
{
ShowHistory(request.DocumentId, items);
}
DocumentHistoryItem[] itemsArray = new DocumentHistoryItem[items.Count];
items.CopyTo(itemsArray, 0);
GetHistoryResponse response = new GetHistoryResponse
{
Items = itemsArray
};
return(response);
}
public HttpResponseMessage GetThumbnailsGrid([FromUri] GetThumbnailsGridRequest request)
{
if (request == null)
{
throw new ArgumentNullException("request", "must not be null");
}
if (string.IsNullOrEmpty(request.DocumentId))
{
throw new ArgumentException("documentId", "must not be null");
}
if (request.FirstPageNumber < 0)
{
throw new ArgumentException("'firstPageNumber' must be a value greater than or equal to 0");
}
var firstPageNumber = request.FirstPageNumber;
var lastPageNumber = request.LastPageNumber;
// Default is page 1 and -1
if (firstPageNumber == 0)
{
firstPageNumber = 1;
}
if (lastPageNumber == 0)
{
lastPageNumber = -1;
}
if (request.Width < 0 || request.Height < 0)
{
throw new ArgumentException("'width' and 'height' must be value greater than or equal to 0");
}
if (request.MaximumGridWidth < 0)
{
throw new ArgumentException("'maximumGridWidth' must be a value greater than or equal to 0");
}
// Get the image format
var saveFormat = SaveImageFormat.GetFromMimeType(request.MimeType);
// Now load the document
var cache = ServiceHelper.Cache;
using (var document = DocumentFactory.LoadFromCache(cache, request.DocumentId))
{
DocumentHelper.CheckLoadFromCache(document);
if (request.Width > 0 && request.Height > 0)
{
document.Images.ThumbnailPixelSize = new LeadSize(request.Width, request.Height);
}
using (var image = document.Images.GetThumbnailsGrid(firstPageNumber, lastPageNumber, request.MaximumGridWidth))
{
Stream stream = ImageSaver.SaveImage(image, document.RasterCodecs, saveFormat, request.MimeType, 0, 0);
// If we just return the stream, Web Api will try to serialize it.
// If the return type is "HttpResponseMessage" it will not serialize
// and you can set the content as you wish.
var result = new HttpResponseMessage();
result.Content = new StreamContent(stream);
ServiceHelper.UpdateCacheSettings(result);
return(result);
}
}
}
public static Response SetAnnotations(SetAnnotationsRequest request)
{
if (request == null)
{
throw new ArgumentNullException("request");
}
if (string.IsNullOrEmpty(request.DocumentId))
{
throw new ArgumentException("documentId must not be null");
}
if (request.PageNumber < 0)
{
throw new ArgumentException("'pageNumber' must be a value greater than or equal to 0");
}
// If pageNumber 0, set for all pages
var annCodec = new AnnCodecs();
AnnContainer[] containers = null;
if (!string.IsNullOrEmpty(request.Annotations))
{
containers = annCodec.LoadAllFromString(request.Annotations);
}
// Now load the document
var cache = ServiceHelper.Cache;
using (var document = DocumentFactory.LoadFromCache(cache, request.DocumentId))
{
DocumentHelper.CheckLoadFromCache(document);
// If the document is read-only then below will fail. So, temporarily reset the value
var wasReadOnly = document.IsReadOnly;
document.IsReadOnly = false;
if (request.PageNumber == 0)
{
// Set all
document.Annotations.SetAnnotations(containers);
}
else
{
DocumentHelper.CheckPageNumber(document, request.PageNumber);
var documentPage = document.Pages[request.PageNumber - 1];
AnnContainer container = null;
if (containers != null)
{
if (containers.Length == 1)
{
container = containers[0];
}
else
{
for (var i = 0; i < containers.Length && container == null; i++)
{
if (containers[i].PageNumber == request.PageNumber)
{
container = containers[i];
}
}
}
}
documentPage.SetAnnotations(container);
}
// reset the read-only value before saving into the cache
document.IsReadOnly = wasReadOnly;
document.SaveToCache();
}
return(new Response());
}
public GetAnnotationsIBMResponse GetAnnotationsIBM(GetAnnotationsIBMRequest request)
{
if (request == null)
{
throw new ArgumentNullException("request");
}
// Must have the documentId you'd like to add annotations to.
// If you only have the document cache URI, DocumentFactory.LoadFromUri needs to be called.
if (string.IsNullOrEmpty(request.DocumentId))
{
throw new ArgumentNullException("documentId");
}
// The IBM annotations will be stored here (key: GUID, value: XML string).
Dictionary <AnnHistoryItemState, Dictionary <string, string> > ibmObjects = null;
var cache = ServiceHelper.Cache;
using (var document = DocumentFactory.LoadFromCache(cache, request.DocumentId))
{
// Ensure we have the document.
DocumentHelper.CheckLoadFromCache(document);
// Use the history to return all added, modified, and deleted IBM annotations.
ibmObjects = ProcessAnnotationsHistory(document);
}
// Here (if defined) we send the converted annotations to disk as an example.
if (ibmObjects != null && _processToDiskRoot != null)
{
try
{
string dir = _processToDiskRoot + "/" + request.DocumentId;
ProcessToDisk(dir, ibmObjects);
}
catch (Exception e)
{
Trace.WriteLine(string.Format("Failed to process converted annotations to disk: {0}", e.Message));
}
}
GetAnnotationsIBMResponse response = new GetAnnotationsIBMResponse();
if (ibmObjects != null)
{
// See #REF IBM_Annotations_Support
if (ibmObjects.ContainsKey(AnnHistoryItemState.Added))
{
response.Added = ibmObjects[AnnHistoryItemState.Added];
}
if (ibmObjects.ContainsKey(AnnHistoryItemState.Modified))
{
response.Modified = ibmObjects[AnnHistoryItemState.Modified];
}
if (ibmObjects.ContainsKey(AnnHistoryItemState.Deleted))
{
response.Deleted = ibmObjects[AnnHistoryItemState.Deleted];
}
}
return(response);
}
public SetAnnotationsIBMResponse SetAnnotationsIBM(SetAnnotationsIBMRequest request)
{
if (request == null)
{
throw new ArgumentNullException("request");
}
// Must have the documentId you'd like to add annotations to.
// If you only have the document cache URI, DocumentFactory.LoadFromUri needs to be called.
if (string.IsNullOrEmpty(request.DocumentId))
{
throw new ArgumentNullException("documentId");
}
// Check that we have annotations.
if (request.Annotations == null)
{
throw new ArgumentNullException("annotations");
}
var cache = ServiceHelper.Cache;
using (var document = DocumentFactory.LoadFromCache(cache, request.DocumentId))
{
// Ensure we have the document.
DocumentHelper.CheckLoadFromCache(document);
// If the document is read-only then we won't be able to modify its settings. Temporarily change this state.
bool wasReadOnly = document.IsReadOnly;
document.IsReadOnly = false;
// Get the IBM annotations from the request.
IBMAnnotation[] ibmAnnotationObjects = request.Annotations;
// Start converting. We need a rendering engine instance to help with measuring font sizes.
AnnRenderingEngine renderingEngine = ServiceHelper.GetAnnRenderingEngine();
// We have different options for reading the annotation...
IBMP8ReadOptions readOptions = new IBMP8ReadOptions();
readOptions.RenderingEngine = renderingEngine;
int pagesCount = document.Pages.Count;
// We have all the IBM objects converted to LEAD; now, add them to their respective page containers.
Dictionary <int, AnnContainer> modifiedContainers = new Dictionary <int, AnnContainer>();
for (int i = 0; i < ibmAnnotationObjects.Length; i++)
{
// Our IBM annotation, as an XML string.
IBMAnnotation ibmObj = ibmAnnotationObjects[i];
if (ibmObj == null || string.IsNullOrEmpty(ibmObj.Annotation))
{
continue;
}
try
{
// Before converting, get the target page number.
string ibmPageNumberValue = AnnCodecs.ReadIBMP8PropDescAttr(ibmObj.Annotation, AnnCodecs.IBM_PAGENUMBER);
int pageNumber = 1;
if (!string.IsNullOrEmpty(ibmPageNumberValue))
{
int.TryParse(ibmPageNumberValue, out pageNumber);
}
// Make sure the page exists.
// If zero, set to page 1; if outside of the document range, disregard it.
if (pageNumber == 0)
{
pageNumber = 1;
}
else if (pageNumber > pagesCount)
{
continue;
}
// Get its container (one per page) and add the object to it.
DocumentPage documentPage = document.Pages[pageNumber - 1];
AnnContainer container = null;
if (modifiedContainers.ContainsKey(pageNumber))
{
container = modifiedContainers[pageNumber];
}
else
{
container = documentPage.GetAnnotations(true);
modifiedContainers.Add(pageNumber, container);
}
readOptions.Mapper = container.Mapper;
// Convert to a LEADTOOLS AnnObject.
// See "#REF IBM_Annotations_Support" for support info
AnnObject leadObj = AnnCodecs.ConvertFromIBMP8(ibmObj.Annotation, readOptions);
if (leadObj == null)
{
Trace.WriteLine("Conversion from IBM Annotation not supported for item at index " + i);
continue;
}
// Add the supplied properties
if (!string.IsNullOrEmpty(ibmObj.Password))
{
leadObj.Lock(ibmObj.Password);
}
if (!string.IsNullOrEmpty(ibmObj.UserId))
{
leadObj.UserId = ibmObj.UserId;
Dictionary <string, string> metadata = leadObj.Metadata;
string key = AnnObject.AuthorMetadataKey;
if (metadata.ContainsKey(key))
{
if (string.IsNullOrEmpty(metadata[key]))
{
metadata[key] = ibmObj.UserId;
}
}
else
{
metadata.Add(key, ibmObj.UserId);
}
}
container.Children.Add(leadObj);
}
catch (Exception e)
{
Trace.WriteLine(string.Format("Failed to convert IBM Annotation at index {0}: {1}", i, e.Message));
}
}
// Set the modified containers in the document.
AnnContainer[] containers = modifiedContainers.Values.ToArray();
document.Annotations.SetAnnotations(containers);
// Reset the read-only value from above before saving into the cache.
document.IsReadOnly = wasReadOnly;
// Enable history tracking from this point forward so that calls to retrieve the IBM Annotations will have a history from this set operation.
document.History.AutoUpdate = true;
// Clear any old history.
AnnHistory history = document.Annotations.GetHistory();
if (history != null)
{
history.Clear();
document.Annotations.SetHistory(history);
}
document.SaveToCache();
return(new SetAnnotationsIBMResponse());
}
}
public HttpResponseMessage GetImage([FromUri] GetImageRequest request)
{
if (request == null)
{
throw new ArgumentNullException("request");
}
var pageNumber = request.PageNumber;
if (string.IsNullOrEmpty(request.DocumentId))
{
throw new ArgumentException("documentId must not be null");
}
if (pageNumber < 0)
{
throw new ArgumentException("'pageNumber' must be a value greater than or equal to 0");
}
// Default is page 1
if (pageNumber == 0)
{
pageNumber = 1;
}
if (request.Resolution < 0)
{
throw new ArgumentException("'resolution' must be a value greater than or equal to 0");
}
// Sanity check on other parameters
if (request.QualityFactor < 0 || request.QualityFactor > 100)
{
throw new ArgumentException("'qualityFactor' must be a value between 0 and 100");
}
if (request.Width < 0 || request.Height < 0)
{
throw new ArgumentException("'width' and 'height' must be value greater than or equal to 0");
}
// Get the image format
var saveFormat = SaveImageFormat.GetFromMimeType(request.MimeType);
// Now load the document
var cache = ServiceHelper.Cache;
using (var document = DocumentFactory.LoadFromCache(cache, request.DocumentId))
{
DocumentHelper.CheckLoadFromCache(document);
DocumentHelper.CheckPageNumber(document, pageNumber);
var documentPage = document.Pages[pageNumber - 1];
using (var image = documentPage.GetImage(request.Resolution))
{
// Resize it (will only resize if both width and height are not 0), will also take care of FAX images (with different resolution)
ImageResizer.ResizeImage(image, request.Width, request.Height);
var stream = ImageSaver.SaveImage(image, document.RasterCodecs, saveFormat, request.MimeType, request.BitsPerPixel, request.QualityFactor);
// If we just return the stream, Web Api will try to serialize it.
// If the return type is "HttpResponseMessage" it will not serialize
// and you can set the content as you wish.
var response = new HttpResponseMessage();
response.Content = new StreamContent(stream);
ServiceHelper.UpdateCacheSettings(response);
return(response);
}
}
}
public ReadBarcodesResponse ReadBarcodes(ReadBarcodesRequest request)
{
if (request == null)
{
throw new ArgumentNullException("request");
}
var pageNumber = request.PageNumber;
if (string.IsNullOrEmpty(request.DocumentId))
{
throw new ArgumentException("documentId must not be null");
}
if (pageNumber < 0)
{
throw new ArgumentException("'pageNumber' must be a value greater than or equal to 0");
}
// Default is page 1
if (pageNumber == 0)
{
pageNumber = 1;
}
try
{
// Now load the document
var cache = ServiceHelper.Cache;
using (var document = DocumentFactory.LoadFromCache(cache, request.DocumentId))
{
DocumentHelper.CheckLoadFromCache(document);
DocumentHelper.CheckPageNumber(document, pageNumber);
// Set the options
var barcodeEngine = new BarcodeEngine();
document.Barcodes.BarcodeEngine = barcodeEngine;
var barcodeReader = barcodeEngine.Reader;
// Get the symbologies to read
var symbologies = new List <BarcodeSymbology>();
if (request.Symbologies != null && request.Symbologies.Length > 0)
{
symbologies.AddRange(request.Symbologies);
}
else
{
symbologies.AddRange(barcodeReader.GetAvailableSymbologies());
}
// Load the options from config
bool usedCustomOptions = ServiceHelper.SetBarcodeReadOptions(barcodeReader);
if (!usedCustomOptions)
{
ServiceHelper.InitBarcodeReader(barcodeReader, false);
}
var documentPage = document.Pages[pageNumber - 1];
var barcodes = documentPage.ReadBarcodes(request.Bounds, request.MaximumBarcodes, symbologies.ToArray());
if (barcodes.Length == 0 && !usedCustomOptions)
{
// Did not find any barcodes, try again with double pass enabled
ServiceHelper.InitBarcodeReader(barcodeReader, true);
// Do not read MicroPDF417 in this pass since it is too slow
if (symbologies != null && symbologies.Contains(BarcodeSymbology.MicroPDF417))
{
symbologies.Remove(BarcodeSymbology.MicroPDF417);
}
// Try again
barcodes = documentPage.ReadBarcodes(request.Bounds, request.MaximumBarcodes, symbologies.ToArray());
}
// If we found any barcodes, parse the ECI data if available
foreach (var barcode in barcodes)
{
if (barcode.Symbology == BarcodeSymbology.QR || barcode.Symbology == BarcodeSymbology.MicroQR)
{
string eciData = BarcodeData.ParseECIData(barcode.GetData());
if (!string.IsNullOrEmpty(eciData))
{
barcode.Value = eciData;
}
}
}
return(new ReadBarcodesResponse {
Barcodes = barcodes
});
}
}
catch (Exception ex)
{
Trace.WriteLine(string.Format("ReadBarcodes - Error:{1}{0}documentId:{2} pageNumber:{3}", Environment.NewLine, ex.Message, request.DocumentId, pageNumber), "Error");
throw;
}
}
public GetTextResponse GetText(GetTextRequest request)
{
if (request == null)
{
throw new ArgumentNullException("request");
}
var pageNumber = request.PageNumber;
if (string.IsNullOrEmpty(request.DocumentId))
{
throw new ArgumentException("documentId must not be null");
}
if (pageNumber < 0)
{
throw new ArgumentException("'pageNumber' must be a value greater than or equal to 0");
}
// Default is page 1
if (pageNumber == 0)
{
pageNumber = 1;
}
IOcrEngine ocrEngine = null;
try
{
// Now load the document
var cache = ServiceHelper.Cache;
using (var document = DocumentFactory.LoadFromCache(cache, request.DocumentId))
{
DocumentHelper.CheckLoadFromCache(document);
DocumentHelper.CheckPageNumber(document, pageNumber);
document.Text.TextExtractionMode = request.TextExtractionMode;
var documentPage = document.Pages[pageNumber - 1];
if (document.Text.TextExtractionMode != DocumentTextExtractionMode.OcrOnly && !document.Images.IsSvgSupported)
{
ocrEngine = ServiceHelper.GetOCREngine();
if (ocrEngine != null)
{
document.Text.OcrEngine = ocrEngine;
}
}
var pageText = documentPage.GetText(request.Clip);
return(new GetTextResponse {
PageText = pageText
});
}
}
catch (Exception ex)
{
Trace.WriteLine(string.Format("GetText - Error:{1}{0}documentId:{2} pageNumber:{3}", Environment.NewLine, ex.Message, request.DocumentId, pageNumber), "Error");
throw;
}
}
public HttpResponseMessage GetSvg([FromUri] GetSvgRequest request)
{
if (request == null)
{
throw new ArgumentNullException("request");
}
int pageNumber = request.PageNumber;
if (string.IsNullOrEmpty(request.DocumentId))
{
throw new ArgumentException("documentId must not be null");
}
if (pageNumber < 0)
{
throw new ArgumentException("'pageNumber' must be a value greater than or equals to 0");
}
// Default is page 1
if (pageNumber == 0)
{
pageNumber = 1;
}
// Now load the document
var cache = ServiceHelper.Cache;
using (var document = DocumentFactory.LoadFromCache(cache, request.DocumentId))
{
DocumentHelper.CheckLoadFromCache(document);
DocumentHelper.CheckPageNumber(document, pageNumber);
document.Images.UnembedSvgImages = request.UnembedImages;
var documentPage = document.Pages[pageNumber - 1];
var loadOptions = new CodecsLoadSvgOptions();
loadOptions.ForceTextPath = (request.Options & DocumentGetSvgOptions.ForceTextPath) == DocumentGetSvgOptions.ForceTextPath;
loadOptions.ForceRealText = (request.Options & DocumentGetSvgOptions.ForceRealText) == DocumentGetSvgOptions.ForceRealText;
loadOptions.DropImages = (request.Options & DocumentGetSvgOptions.DropImages) == DocumentGetSvgOptions.DropImages;
loadOptions.DropShapes = (request.Options & DocumentGetSvgOptions.DropShapes) == DocumentGetSvgOptions.DropShapes;
loadOptions.DropText = (request.Options & DocumentGetSvgOptions.DropText) == DocumentGetSvgOptions.DropText;
loadOptions.ForConversion = (request.Options & DocumentGetSvgOptions.ForConversion) == DocumentGetSvgOptions.ForConversion;
loadOptions.IgnoreXmlParsingErrors = (request.Options & DocumentGetSvgOptions.IgnoreXmlParsingErrors) == DocumentGetSvgOptions.IgnoreXmlParsingErrors;
using (var svgDocument = documentPage.GetSvg(loadOptions))
{
if (svgDocument != null)
{
if (!svgDocument.IsFlat)
{
svgDocument.Flat(null);
}
if (!svgDocument.IsRenderOptimized)
{
svgDocument.BeginRenderOptimize();
}
var svgBounds = svgDocument.Bounds;
if (!svgBounds.IsValid)
{
svgDocument.CalculateBounds(false);
}
}
if (svgDocument != null)
{
var gzip = ServiceHelper.GetSettingBoolean(ServiceHelper.Key_Svg_GZip);
var stream = ToStream(svgDocument, gzip);
// HttpContext is Web Api's version of WebOperationContext
//var currentContext = WebOperationContext.Current;
var currentContext = HttpContext.Current;
if (currentContext != null)
{
if (gzip)
{
currentContext.Response.Headers.Add("Content-Encoding", "gzip");
}
currentContext.Response.ContentType = "image/svg+xml";
currentContext.Response.Headers.Add("ContentLength", stream.Length.ToString());
}
// If we just return the stream, Web Api will try to serialize it.
// If the return type is "HttpResponseMessage" it will not serialize
// and you can set the content as you wish.
var response = new HttpResponseMessage();
response.Content = new StreamContent(stream);
ServiceHelper.UpdateCacheSettings(response);
return(response);
}
else
{
return(null);
}
}
}
}
public HttpResponseMessage GetSvgBackImage([FromUri] GetSvgBackImageRequest request)
{
if (request == null)
{
throw new ArgumentNullException("request");
}
var pageNumber = request.PageNumber;
if (string.IsNullOrEmpty(request.DocumentId))
{
throw new ArgumentException("documentId must not be null");
}
if (pageNumber < 0)
{
throw new ArgumentException("'pageNumber' must be a value greater than or equals to 0");
}
// Default is page 1
if (pageNumber == 0)
{
pageNumber = 1;
}
if (request.Resolution < 0)
{
throw new ArgumentException("'resolution' must be a value greater than or equal to 0");
}
// Sanity check on other parameters
if (request.QualityFactor < 0 || request.QualityFactor > 100)
{
throw new ArgumentException("'qualityFactor' must be a value between 0 and 100");
}
if (request.Width < 0 || request.Height < 0)
{
throw new ArgumentException("'width' and 'height' must be value greater than or equal to 0");
}
// Get the image format
var saveFormat = SaveImageFormat.GetFromMimeType(request.MimeType);
var rasterBackColor = RasterColor.White;
if (request.BackColor != null)
{
try
{
rasterBackColor = RasterColor.FromHtml(request.BackColor);
}
catch (Exception ex)
{
Trace.WriteLine(string.Format("GetImage - Error:{1}{0}documentId:{2} pageNumber:{3}", Environment.NewLine, ex.Message, request.DocumentId, pageNumber), "Error");
}
}
// Now load the document
var cache = ServiceHelper.Cache;
using (var document = DocumentFactory.LoadFromCache(cache, request.DocumentId))
{
DocumentHelper.CheckLoadFromCache(document);
DocumentHelper.CheckPageNumber(document, pageNumber);
var documentPage = document.Pages[pageNumber - 1];
var image = documentPage.GetSvgBackImage(rasterBackColor, request.Resolution);
if (image != null)
{
try
{
// Resize it (will only resize if both width and height are not 0), will also take care of FAX images (with different resolution)
ImageResizer.ResizeImage(image, request.Width, request.Height);
var stream = ImageSaver.SaveImage(image, document.RasterCodecs, saveFormat, request.MimeType, request.BitsPerPixel, request.QualityFactor);
// If we just return the stream, Web Api will try to serialize it.
// If the return type is "HttpResponseMessage" it will not serialize
// and you can set the content as you wish.
var response = new HttpResponseMessage();
response.Content = new StreamContent(stream);
ServiceHelper.UpdateCacheSettings(response);
return(response);
}
finally
{
image.Dispose();
}
}
else
{
// Instead of throwing an exception, let's return the smallest possible GIF
//throw new ServiceException("No SVG Back Image exists", HttpStatusCode.NotFound);
var response = new HttpResponseMessage();
var data = Convert.FromBase64String(PageController.smallest_GIF_base64);
var ms = new MemoryStream(data);
response.Content = new StreamContent(ImageSaver.PrepareStream(ms, "image/gif"));
ServiceHelper.UpdateCacheSettings(response);
return(response);
}
}
}
