SkiaImageFormatProvider: Add support for Text, TextMarkup, Line, and Stamp annotations.
Currently, these annotations are omitted on image export.
This is the code for inserting the image:
static void Main(string[] args)
{
FixedExtensibilityManager.ImagePropertiesResolver = new ImagePropertiesResolver();
//Telerik.Windows.Documents.Extensibility.JpegImageConverterBase defaultJpegImageConverter = new Telerik.Documents.ImageUtils.JpegImageConverter();
//Telerik.Windows.Documents.Extensibility.FixedExtensibilityManager.JpegImageConverter = defaultJpegImageConverter;
//Output("fyb-64.png", "output-working.pdf");
Output("fyb.png", "output-broken.pdf");
}
private static void Output(string resourceName, string outputFileName)
{
var document = new RadFixedDocument();
using (var editor = new RadFixedDocumentEditor(document))
{
Stream image = new FileStream(resourceName, FileMode.Open);
var table = new Table
{
LayoutType = TableLayoutType.FixedWidth,
Margin = new Thickness(10, 0, 0, 0),
};
var row = table.Rows.AddTableRow();
var cell = row.Cells.AddTableCell();
var block = cell.Blocks.AddBlock();
block.InsertImage(image);
editor.InsertTable(table);
var pdfData = ExportToPdf(document);
File.Delete(outputFileName);
File.WriteAllBytes(outputFileName, pdfData);
Process.Start(new ProcessStartInfo() { FileName = outputFileName, UseShellExecute = true });
}
}
private static byte[] ExportToPdf(RadFixedDocument document)
{
byte[] pdfData;
using (var ms = new MemoryStream())
{
var pdfFormatProvider = new PdfFormatProvider();
pdfFormatProvider.Export(document, ms);
pdfData = ms.ToArray();
}
return pdfData;
}
Workaround: Instead of setting the ImagePropertiesResolver, set the JpegImageConverter:
Telerik.Windows.Documents.Extensibility.JpegImageConverterBase defaultJpegImageConverter = new Telerik.Documents.ImageUtils.JpegImageConverter();
Telerik.Windows.Documents.Extensibility.FixedExtensibilityManager.JpegImageConverter = defaultJpegImageConverter;
Search for specific text in a PDF document and you will notice that if the document is landscape, the SearchResult.GetWordBoundingRect method may return incorrect results. If the document is Portrait, the exact results are highlighted with the code snippet below:
PdfFormatProvider provider = new PdfFormatProvider();
RadFixedDocument document = provider.Import(File.ReadAllBytes("Landscape.pdf"));
TextSearch searchText = new TextSearch(document);
TextSearchOptions searchOptions = new TextSearchOptions { UseRegularExpression=false, CaseSensitive=false, WholeWordsOnly = true };
IEnumerable<SearchResult> matchResults = searchText.FindAll("sed", searchOptions);
foreach (SearchResult resultItem in matchResults)
{
Rect rect = resultItem.GetWordBoundingRect();
RadFixedPage page = resultItem.GetResultPage();
FixedContentEditor editor = new FixedContentEditor(page);
editor.GraphicProperties.FillColor = new RgbColor(125, 255, 0, 0);
editor.DrawRectangle(rect);
}
string outputFilePath = "result.pdf";
File.Delete(outputFilePath);
File.WriteAllBytes(outputFilePath, provider.Export(document));
Process.Start(new ProcessStartInfo() { FileName = outputFilePath, UseShellExecute = true });
Landscape: wrong rectangles are highlighted
Portrait: correct rectangles are highlighted:
NullReferenceException is thrown when Find API is used on a newly created document.
Workaround: Export - Import the document before using the Find API
PdfFormatProvider pdfFormatProvider = new PdfFormatProvider();
byte[] exportedDocument = pdfFormatProvider.Export(document);
document = pdfFormatProvider.Import(exportedDocument);
Encoding table headers are preserved when creating subsets.
As a result of the below missing operator, some of the glyphs can't be extracted from the CFFFontTable and the characters are not displayed in the PdfViewer:
The end user result is missing letter from the PDF content.
16 0 obj <</AP<</N<</Off null/On 188 0 R>>/D<</Off 189 0 R/On 190 0 R>>>>/AS/Off/F 4/FT/Btn/H/T/P 19 0 R/Rect[ 40.3 690.45 56.15 706.7999]/Subtype/Widget/T(Einraeumung:Grabnutzungsrechts)/Type/Annot>> endobj
PdfProcessing: Handle merge of documents containing fields with the same invalid name.
System.OutOfMemoryException: Insufficient memory to continue the execution of the program. at System.Text.StringBuilder.ExpandByABlock(Int32 minBlockCharCount) at System.Text.StringBuilder.AppendWithExpansion(Char value) at System.Text.StringBuilder.Append(Char value) at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Utilities.CrossReferenceCollectionReader.GetAllText(Reader reader, Int64 minOffset, Int64 maxOffset) at Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Utilities.CrossReferenceCollectionReader.FindAllObjectOffsets(Reader reader, Dictionary`2 tokenToOffsets, Int64 minOffset, Int64 maxOffset)
This is the code snippet for reproducing the error message:
static void Main(string[] args)
{
string filePath = "Lorem ipsum dolor sit amet.pdf";
//load a random document
PdfFormatProvider provider = new PdfFormatProvider();
RadFixedDocument originalDocument;
using (Stream stream = File.OpenRead(filePath))
{
originalDocument = provider.Import(stream);
}
//draw something on the first page
FixedContentEditor editor = new FixedContentEditor(originalDocument.Pages[0]);
editor.GraphicProperties.IsFilled = true;
editor.GraphicProperties.FillColor = RgbColors.Black;
Telerik.Documents.Primitives.Rect Rect = new Telerik.Documents.Primitives.Rect(10, 10, 200, 100);
editor.DrawRectangle(Rect);
//export the pages as images and build a brand new document from the images
SkiaImageFormatProvider imageProvider = new SkiaImageFormatProvider();
imageProvider.ExportSettings.ImageFormat = SkiaImageFormat.Jpeg;
imageProvider.ExportSettings.ScaleFactor = 0.8;
imageProvider.ExportSettings.Quality = 80;
RadFixedDocument doc = new RadFixedDocument();
foreach (RadFixedPage page in originalDocument.Pages)
{
byte[] resultImage = imageProvider.Export(page);
RadFixedPage pdfpage = doc.Pages.AddPage();
editor = new FixedContentEditor(pdfpage);
Stream imageStream = new MemoryStream(resultImage);
editor.DrawImage(imageStream);
}
//export the pdf built from the images
PdfFormatProvider pdfFormatProvider = new PdfFormatProvider();
string outputPdf = @"output.pdf";
File.Delete(outputPdf);
using (Stream output = File.OpenWrite(outputPdf))
{
pdfFormatProvider.Export(doc, output);
}
Process.Start(new ProcessStartInfo() { FileName = outputPdf, UseShellExecute = true });
}
Workaround:
static void Main(string[] args)
{
string filePath = "Lorem ipsum dolor sit amet.pdf";
//load a random document
PdfFormatProvider provider = new PdfFormatProvider();
RadFixedDocument originalDocument;
using (Stream stream = File.OpenRead(filePath))
{
originalDocument = provider.Import(stream);
}
//draw something on the first page
FixedContentEditor editor = new FixedContentEditor(originalDocument.Pages[0]);
editor.GraphicProperties.IsFilled = true;
editor.GraphicProperties.FillColor = RgbColors.Black;
Telerik.Documents.Primitives.Rect Rect = new Telerik.Documents.Primitives.Rect(10, 10, 200, 100);
editor.DrawRectangle(Rect);
using (Stream output = File.OpenWrite(filePath))
{
provider.Export(originalDocument, output);
}
using (Stream stream = File.OpenRead(filePath))
{
originalDocument = provider.Import(stream);
}
//export the pages as images and build a brand new document from the images
SkiaImageFormatProvider imageProvider = new SkiaImageFormatProvider();
imageProvider.ExportSettings.ImageFormat = SkiaImageFormat.Jpeg;
imageProvider.ExportSettings.ScaleFactor = 0.8;
imageProvider.ExportSettings.Quality = 80;
RadFixedDocument doc = new RadFixedDocument();
foreach (RadFixedPage page in originalDocument.Pages)
{
byte[] resultImage = imageProvider.Export(page);
RadFixedPage pdfpage = doc.Pages.AddPage();
editor = new FixedContentEditor(pdfpage);
Stream imageStream = new MemoryStream(resultImage);
editor.DrawImage(imageStream);
}
//export the pdf built from the images
PdfFormatProvider pdfFormatProvider = new PdfFormatProvider();
string outputPdf = @"output.pdf";
File.Delete(outputPdf);
using (Stream output = File.OpenWrite(outputPdf))
{
pdfFormatProvider.Export(doc, output);
}
Process.Start(new ProcessStartInfo() { FileName = outputPdf, UseShellExecute = true });
}
The visual fill element is not exported to pdf:
Only the text part is present.