Hi Juliet,
Kindly find the sample for free text for changing the font
properties programmatically. You can also change in UI level.
Sample - https://stackblitz.com/edit/react-6npsxa-rq1rql?file=index.html
Kindly find the documentation for tool tip - https://ej2.syncfusion.com/javascript/documentation/pdfviewer/how-to/display-custom-tool-tip-for-annotations/
To change the font family in free text apart from the
provided fonts. You can change like the below example one
We don’t have
direct support saving the custom font style for text annotation along with pdf
files. So while saving the document we have embed the font with annotation on
the action itself.
public
IActionResult Download([FromBody] Dictionary<string, string> jsonObject)
{
//Initialize the PDF Viewer object with memory cache object
PdfRenderer pdfviewer = new PdfRenderer(_cache);
string documentBase = pdfviewer.GetDocumentAsBase64(jsonObject);
string base64Data = documentBase.Split("base64,")[1];
byte[]
document1 = Convert.FromBase64String(base64Data);
PdfLoadedDocument ldoc = new PdfLoadedDocument(document1);
for (int i = 0; i < ldoc.Pages.Count; i++)
{
PdfLoadedPage lpage = ldoc.Pages[i] as PdfLoadedPage;
for (int j = 0; j < lpage.Annotations.Count; j++)
{
PdfLoadedFreeTextAnnotation lAnnot = lpage.Annotations[j] as
PdfLoadedFreeTextAnnotation;
if (lAnnot != null)
{
if (IsThaiCharacter(lAnnot.MarkUpText))
{
FileStream fontStream = new FileStream(GetDocumentPath("tahoma.ttf"),
FileMode.Open);
lAnnot.Font = new PdfTrueTypeFont(fontStream, lAnnot.Font.Size);
lAnnot.ComplexScript = true;
lAnnot.SetAppearance(true);
}
}
}
}
MemoryStream stream = new MemoryStream();
ldoc.Save(stream);
string base64string = Convert.ToBase64String((stream as
MemoryStream).ToArray());
ldoc.EnableMemoryOptimization = true;
ldoc.Close(true);
ldoc.EnableMemoryOptimization = true;
ldoc.Close(true);
stream.Dispose();
return Content("data:application/pdf;base64," + base64string);
}
We have iterated all the free text annotations from all the pages and embedded the corresponding font file to the specific annotation.
The same you can include another custom font also. Please find the attached sample for your reference.
Sample - https://www.syncfusion.com/downloads/support/directtrac/general/7z/PdfViewerWebService_3.0-957482172.7z
Regards,
Visvesvar K V
