CODEWITHSUNDEEP
flutterpdffonts
dartKnightRises
dartKnightRises

Reputation: 905

Trying to create a pdf in different languages in flutter

I want to print Hindi language in my PDF, I've also tried using Raleway-Regular.ttf font by Google but it also didn't worked.

final font = await rootBundle.load("fonts/ARIAL.TTF");
final ttf = pw.Font.ttf(font);

pdf.addPage(
  pw.MultiPage(
    pageFormat: PdfPageFormat.a4,
    margin: pw.EdgeInsets.all(32),
    build: (pw.Context context){
    return <pw.Widget>[
      pw.Center(
        child: pw.Text("मेन",style: pw.TextStyle(fontSize: 16,font: ttf))
      ),
      pw.SizedBox(height: 20),
      pw.Center(
      child: pw.Text("ABC",style: pw.TextStyle(fontSize: 16))
    ),
  ),
),

I'm getting following Error:

***I/flutter (24862): Cannot decode the string to Latin1. I/flutter (24862): This font does not support Unicode characters. I/flutter (24862): If you want to use strings other than Latin strings, use a TrueType (TTF) font instead. I/flutter (24862): See https://github.com/DavBfr/dart_pdf/wiki/Fonts-Management I/flutter (24862): --------------------------------------------- E/flutter (24862): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: Invalid argument (string): Contains invalid characters.: "मेन"

Upvotes: 3

Views: 12725

Answers (5)

NiiLx
NiiLx

Reputation: 676

For printing Bangla font use this method:

  1. Use font SiyamRupaliANSI
  2. Use the bangla font and convert it to UNICODE TO BIJOY image
  3. Copy the converted code and paste it to your Text widget with fontfamily SiyamRupaliANSI CODE EXAMPLE:
final font = await rootBundle.load("fonts/SiyamRupaliANSI.ttf");
pw.Text( "e‡Kqv", style: pw.TextStyle(
                            fontWeight: FontWeight.bold,
                            fontSize: 14,
                            font: Font.ttf(font),
                    ),
  1. And get this final output of pdf

image

Upvotes: 2

Anand A L
Anand A L

Reputation: 177

Most of the language not works well with the flutter pdf plugin

In Tamil language, I face problems when two characters merge.

so, i modified the tff with available tools and replaced that character with that character. as the result, i can able to get the output

String path = 'assets/custom_Anand_MuktaMalar.ttf';
pw.Font? tamilFont = pw.Font.ttf(await rootBundle.load(path));
pw.Text('உவவுமதி உருவின் ஓங்கல் வெண்குடை'.toPrintPdf)

pdf.addPage(
    pw.Page(
        theme: pw.ThemeData(defaultTextStyle: pw.TextStyle(font: tamilFont)),
  ));

for further ref, you can see my project: https://github.com/anandsubbu007/anand-work/tree/BLOC/tamil_pdf

enter image description here

Upvotes: 0

Dario Lopianov
Dario Lopianov

Reputation: 11

If someone still has this problem

 final data = await rootBundle.load('assets/fonts/opensans_regular.ttf');

 final  dataint = data.buffer.asUint8List(data.offsetInBytes,data.lengthInBytes);

 final  PdfFont  font  =  PdfTrueTypeFont (date,12);

Upvotes: 0

Ganesh Chennaiah
Ganesh Chennaiah

Reputation: 71

Some issues are there with Unicode translations . Please take care of it https://github.com/DavBfr/dart_pdf/issues/198

You can use syncfusion pdf library (You need to buy subscription). You will get all kind of support including search,rtl, unicode support .

final  font = await rootBundle.load("assets/fonts/hind.ttf");
final  ttf = Font.ttf(font);
final pdf = pw.Document();
pw.Text(
  'Your text',
  textDirection:TextDirection.rtl, // If you need in opp direction like urdu
  style: pw.TextStyle(
  font: ttf,))

Upvotes: 0

Amit Upadhyay
Amit Upadhyay

Reputation: 76

I am also facing the same error its because the fonts you are using does not support that language , if you want to use hindi language then you can use hind-regular.ttl font it supports both the fonts hindi and english.

here is the example what i got.

// step 1- add font locatin in pubspec

fonts: - family: hind fonts: - asset: assets/hind.ttf

//step 2-

final pdf = pw.Document();

final font = await rootBundle.load("assets/hind.ttf");

final ttf = pw.Font.ttf(font);

then just apply this ttf in the fontStyle

packages i m using -

import 'package:universal_html/html.dart' as html;

import 'package:pdf/widgets.dart' as pw;

universal_html: ^1.2.3 enter image description here pdf: ^1.11.1

Upvotes: 6

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