Using the correct, modern, Unicode-compliant Khmer font (like those provided by Khmer Fonts) is crucial. The pw.Font.ttf loader generally handles Unicode correctly, but it cannot render characters it doesn't know. 4. Alternative: Using the khmer_fonts Package
Supporting the Khmer language in PDFs is crucial for developers who target the Cambodian market or need to generate documents in Khmer for their users. With Flutter Khmer PDF, developers can create PDFs that cater to the linguistic and cultural needs of their Khmer-speaking audience.
When building the document layout with the pdf package, import the layout widgets with an alias ( pw ) to avoid class naming conflicts with Flutter’s material library. You must load the font as a byte array through the rootBundle before feeding it into the PDF Text style. flutter khmer pdf
The line-height requirements for Khmer text are taller than English because of upper vowels and lower subscripts. Use style: pw.TextStyle(lineSpacing: 4) to prevent vertical overlapping between text rows.
Ensure you compile and check your PDF outputs on both Android and iOS devices, as background rendering systems can subtly alter line breaks. Conclusion You must load the font as a byte
If your selected Khmer font asset does not include a native Bold variant (.ttf file), setting bold: true in the PDF package will force a software-based bold simulation. This simulation can occasionally distort Khmer vowel positions. For official documents, always load separate regular and bold .ttf font files explicitly.
Subscript consonants () stack vertically underneath primary characters. import 'package:pdf/widgets.dart' as pw
flutter_html_to_pdf_v2 : Recently updated to better support complex scripts including , Thai, and Arabic.
import 'package:pdf/widgets.dart' as pw; import 'package:pdf/pdf.dart'; import 'package:flutter/services.dart' show rootBundle;
ElevatedButton( onPressed: () async // Define the page setup (size, margins, etc.) final setup = PageSetup( context: context, // Important for accessing theme data pageFormat: PageFormat.a4, margins: 40, ); // Create an instance of your Khmer page and generate the PDF final pdfFile = await const KhmerCertificatePage().toPDF(setup: setup);
import 'package:printing/printing.dart'; // ... inside your build method PdfPreview( build: (format) => pdf.save(), // Or call your generation function ) Use code with caution. Alternative Solutions for Advanced Layouts