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.
Handle import of documents with wrong type of action key.
Once this is completed use the Exceptions Handling mechanism to handle this scenario. For instance:
private void ImportSettings_DocumentUnhandledException(object sender, DocumentUnhandledExceptionEventArgs e)
{
if (e.Exception is InvalidActionException)
{
When an import of the attached PDF file is executed, the result is a file with vertically rotated images, as well as enlarged and distorted. This is part of the code executed in the final application. Do you have any idea why this is happening? Is there any suggested solution?
As a result of the imported file, other processes are executed, such as creating bookmarks and page numbering, but the result is incorrect when presenting the rotated images.
Please find attached a code snippet and the input and generated output file.
Thank you.
private static void TestPDF()
{
RadFixedDocument document;
Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.PdfFormatProvider providerPdf = new();
using (Stream stream = System.IO.File.OpenRead("C:\\TMP\\Ejemplo1-Input.pdf"))
{
document = providerPdf.Import(stream);
byte[] output = providerPdf.Export(document);
System.IO.File.WriteAllBytes("C:\\TMP\\Ejemplo1-Output.pdf", output);
}
}
SkiaImageFormatProvider: Rectangle behind text overlaps the text of previous line.
RESOLVED: The issue is dismissed. The actual reason for the results is missing FontsProvider implementation. In order for accurate calculations and measurements the fonts used in the document need to be resolved correctly.
Error message:
System.InvalidCastException: 'Unable to cast object of type 'Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Types.PdfHexString' to type 'Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.Model.Types.PdfLiteralString'.'
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
Hi Telerik,
Could you add abbility to contact TSA (timestamp) server and sign PDF document with certificate (which is currently supported) and signed timestamp?
Thank you
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)
I'm currently working with the large PDFs. I'm able to process PDFs up to 2.1 GB easily without any error using Telerik Document Processing. However, if I take a larger PDF (e.g. 2.8 GB), PdfFormatProvider.Import throws an IOException with the next message: "The parameter is incorrect. : {path}".
I'm using FileStream to provide a sample for the Import method.
I've checked it with the different samples, all have the same behavior. So, I guess, it will work for any PDF larger than 2.1 GB.