Возможные причины недоступности данного ресурса:
import 'package:flutter/material.dart'; import 'package:printing/printing.dart'; import 'khmer_pdf_generator.dart'; // Import the generator class built above class PdfPreviewScreen extends StatelessWidget const PdfPreviewScreen(Key? key) : super(key: key); @override Widget build(BuildContext context) return Scaffold( appBar: AppBar( title: const Text('ពិនិត្យមើលឯកសារ PDF'), ), body: PdfPreview( build: (format) => KhmerPdfGenerator.generateInvoice(), allowPrinting: true, allowSharing: true, ), ); Use code with caution. Critical Troubleshooting Tips for Khmer PDFs
Before writing text to the document, load the asset as a byte stream and register it with the PDF layout engine using pw.Font.ttf() .
If you use default PDF packages without custom font configurations, Khmer text often displays as squares, question marks, or disconnected characters. This happens because the default PDF generators lack the necessary OpenType or TrueType fonts to understand Khmer script layout rules. flutter khmer pdf
Design and Accessibility of the PDF
Without a proper shaping engine , a PDF library will print the individual code points side-by-side, creating gibberish. import 'package:flutter/material
pw.Text( 'សួរស្ដី', style: pw.TextStyle(font: khmerFont), ) Use code with caution. Displaying PDF in Flutter
Did you find this article helpful? Share this guide with a friend who wants to learn coding in Cambodia. If you know of a specific "Flutter Khmer PDF" link, please share it in the comments below to help the community grow. If you use default PDF packages without custom
| Chapter | Topic in English | Topic in Khmer | Key Content | | :--- | :--- | :--- | :--- | | 1 | Environment Setup | ការដំឡើងបរិស្ថាន | Installing Android Studio, Flutter SDK, and Emulators (with Khmer screenshots) | | 2 | Dart Basics | មូលដ្ឋានគ្រឹះ Dart | Variables, Loops, Functions, Classes (Avoiding complex English explanations) | | 3 | Hello World | កម្មវិធីដំបូង | Explaining main() and runApp() in simple Khmer | | 4 | Widgets | វិជែត | Stateless vs Stateful; explaining setState using local analogies | | 5 | Layouts | ការរៀបចំប្លង់ | Row, Column, Stack, Expanded (Visual diagrams are better than text here) | | 6 | Navigation | ការរុករកទំព័រ | Routes, Navigator.push, and Pop | | 7 | API Calls | ការហៅ API | Using http package and JSON parsing (A major pain point for Khmer newbies) |
flutter: assets: - assets/fonts/KantumruuyPro-Regular.ttf - assets/fonts/KantumruuyPro-Bold.ttf Use code with caution. Step 2: Designing the Khmer PDF Document
The PDF library must support complex text layout, specifically handling the "Khmer Sign Coeng" (្) to combine consonants correctly 1.2.4 . 2. Essential Packages
In the Flutter ecosystem, the two dominant libraries for PDF generation are pdf (by David PHAM-VAN) and syncfusion_flutter_pdf . Here is how they handle Khmer: