Pdf.dart package implement fontFallback to print emojis

Question

I tried without success many solutions proposed on the net I am trying to print texts (stored in a local database) which include emojis (smatphone origin) and special french caracters (ie Π) I can't solve the problem of "Future" when embedding a fontFallback... My code :

import 'package:google_fonts/google_fonts.dart';

static Future emoji() async =\> await PdfGoogleFonts.notoColorEmoji();

static pw.Widget cell(pw.Context context, int index) {
String texte = SQLHelper.listeItemsRepas()\[index\];

    // Text including some emojis
    
    
    // Create a custom TextStyle with fallback fonts
    pw.TextStyle(
      fontFallback: emoji(),
    );
    return pw.Container(
      constraints: const pw.BoxConstraints.tightFor(
          width: double.infinity, height: 22.0),
      padding: const pw.EdgeInsets.all(3),
      child: pw.Text(
        texte,
        style: const pw.TextStyle(
            fontSize: 9),
        textAlign: pw.TextAlign.left,
        softWrap: true,
        maxLines: 6,
    
        //  style: style,
      ),
    );

}

    // Text including some emojis
    

Can you give me the correct code ?

Answer 1

I placed instructions inside the PageTheme as follows (hope it's understable)

Future<pw.PageTheme> myPageTheme(PdfPageFormat format) async {

final icons = await rootBundle.load("assets/Materialicons.ttf");
final noto = await rootBundle.load("assets/NotoColorEmoji-emojicompat.ttf");
final alumni = await rootBundle.load("assets/AlumniSans-Regular.ttf");

  final iconsTtf = pw.Font.ttf(icons);
  return pw.PageTheme(
    pageFormat: PdfPageFormat.a4,
    orientation:pw.PageOrientation.portrait,
    margin: const pw.EdgeInsets.only(
        top: 50.0,
        bottom: 40.0,
        left: 55.0,
        right: 55.0
        ),
    theme: pw.ThemeData.withFont(
      base:   pw.Font.ttf(alumni),
      icons: iconsTtf,
      fontFallback: [pw.Font.ttf(noto)]
    ),
  );
}

and it worked. @JavierGarcia:Let me know if it's not clear.