Khmer Pdf: Flutter

Several Cambodian universities require final-year students to publish their research. Search for:

These academic PDFs are often high-quality, peer-reviewed, and explain complex logic using Khmer terminology.

Generating Khmer PDFs in Flutter is possible but requires vigilance.

As Flutter’s text rendering engine (Skia/Impeller) improves and the pdf package matures, Khmer support will get better. For now, with the right font and explicit handling, you can ship production-ready Khmer PDFs that honor the beauty and complexity of Cambodia’s national script.

In the rapidly expanding ecosystem of Flutter development, creating documents is a standard requirement for enterprise apps—be it for invoicing, reporting, or ticketing. However, for developers working with complex scripts like Khmer (Cambodian), generating PDFs presents a unique set of challenges.

This article explores the current landscape of "Flutter Khmer PDF" generation, the technical hurdles developers face regarding font rendering, and the best practices to ensure typographic accuracy. flutter khmer pdf

If you have noticed a gap in the market, consider writing your own PDF. The Cambodian tech scene needs more Khmer-language technical writers.

The pdf package requires you to load the font as bytes. Here is the critical part: You must pass the true flag for useFontShaping to allow the underlying HarfBuzz shaping engine to process Khmer correctly.

import 'package:pdf/pdf.dart';
import 'package:pdf/widgets.dart' as pw;
import 'package:flutter/services.dart' show rootBundle;
Future<Uint8List> generateKhmerPdf() async 
// 1. Load Khmer font
final fontData = await rootBundle.load('assets/fonts/Khmer_OS_Battambang.ttf');
final ttf = pw.Font.ttf(fontData.buffer.asByteData());
// 2. Create PDF with custom font
final pdf = pw.Document();
pdf.addPage(
pw.Page(
build: (pw.Context context) 
return pw.Center(
child: pw.Text(
'សួស្តីពិភពលោក! នេះជា PDF ជាភាសាខ្មែរ។', // "Hello World! This is a PDF in Khmer."
style: pw.TextStyle(font: ttf, fontSize: 24),
),
);
,
),
); import 'package:pdf/widgets.dart' as pw
return pdf.save();

When working with PDFs in Flutter (whether for Khmer language apps or general use), these are the standard packages you will find in most tutorials:

One of the biggest challenges for Khmer developers is that PDF generation libraries often fail to render Khmer script correctly (characters display as boxes or "Tofu").

Solution Content for Devs: To display Khmer text in a generated PDF, you must load a Khmer font (like Battambang or Kantumruy) as an asset. void main() runApp(MyApp())

Code Snippet (Generating PDF with Khmer Font):

import 'package:pdf/pdf.dart';
import 'package:pdf/widgets.dart' as pw;
import 'package:flutter/services.dart' show rootBundle;
Future<Uint8List> generateKhmerPdf() async 
// 1. Load the Khmer font from assets
final fontData = await rootBundle.load('assets/fonts/KhmerBattambang.ttf');
final ttf = pw.Font.ttf(fontData);
// 2. Create the PDF document
final pdf = pw.Document();
// 3. Add a page with Khmer text
pdf.addPage(
pw.Page(
build: (pw.Context context) 
return pw.Center(
child: pw.Text(
'សួស្តី! នេះគឺជាឯកសារ PDF ជាភាសាខ្មែរ។', // "Hello! This is a PDF document in Khmer."
style: pw.TextStyle(font: ttf, fontSize: 20),
),
);
,
),
);
return pdf.save();

Below is a simple example of generating a PDF document that includes Khmer text. This example uses the pdf package.

import 'package:flutter/material.dart';
import 'package:pdf/pdf.dart';
import 'package:pdf/widgets.dart' as pw;
import 'package:flutter_khmer/flutter_khmer.dart';
void main() 
  runApp(MyApp());
class MyApp extends StatelessWidget 
  @override
  Widget build(BuildContext context) 
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('PDF Generation Demo'),
        ),
        body: Center(
          child: ElevatedButton(
            onPressed: _generatePdf,
            child: Text('Generate PDF'),
          ),
        ),
      ),
    );
void _generatePdf() async 
    final pdf = pw.Document();
    final khmerText = FlutterKhmer(
      text: 'សូមស្វាគមន៍មកកាន់ Flutter',
    ).toString();
pdf.addPage(pw.Page(
      build: (pw.Context context) 
        return pw.Center(
          child: pw.Text(khmerText, style: pw.TextStyle(fontSize: 40)),
        );
      ,
    ));
final directory = await getApplicationDocumentsDirectory();
    final file = File('$directory.path/example.pdf');
    await file.writeAsBytes(await pdf.save());
print('PDF saved to $file.path');