create icons in flutter pdf?

Question

I need a add icons in flutter pdf. This was completely different when compared with add icons in flutter. I am using https://pub.dev/packages/pdf this package.

Here is the code :

pw.Icon(pw.IconData(0xe047));

Error was :

ArgumentError (Invalid argument (string): Contains invalid characters.: "")

Answer 1

check whether PdfGoogleFonts.materialIcons() is added under page theme:

theme: pw.ThemeData.withFont(
  base: await PdfGoogleFonts.openSansRegular(),
  bold: await PdfGoogleFonts.openSansBold(),
  icons: await PdfGoogleFonts.materialIcons(), // this line
)

Answer 2

Set your custom icons using www.fluttericon.com

using pw.ThemeData.withFont like this

var pathToFile = await rootBundle.load('- your icon font file (.ttf) -');
final ttf = pw.Font.ttf(pathToFile);

// load ttf to pdf theme
final theme = pw.ThemeData.withFont(
                  base: await PdfGoogleFonts.robotoCondensedRegular(),
                  bold: await PdfGoogleFonts.robotoCondensedBold(),
                  icons: ttf,
               );

final pw.Icon(pw.IconData(customIcon.icon.codePoint), size: 10)

output after rendering pdf file is,

Answer 3

You have to add the printing module

https://pub.dev/packages/printing

dependencies:
  printing: ^5.6.0

import the package in your dart file

import 'package:printing/printing.dart'; 

And set your theme with:

final pdf = pw.Document();

pdf.addPage(
  pw.Page(
    theme: pw.ThemeData.withFont(
      base: await PdfGoogleFonts.varelaRoundRegular(),
      bold: await PdfGoogleFonts.varelaRoundRegular(),
      icons: await PdfGoogleFonts.materialIcons(),
    ),
    pageFormat: PdfPageFormat.a4,
    build: (pw.Context context) {
      return pw.Center(
        child: pw.Text("Hello World"),
      );
    },
  ),
);

The source of this answer is here

https://github.com/DavBfr/dart_pdf/blob/master/demo/lib/examples/resume.dart

Answer 4

To use Material Icons in Pdf package you just simply follow the code snippets down here.

Import material as mt and pdf as dynamic

import 'package:flutter/material.dart' as mt;
import 'package:pdf/pdf.dart';
import 'package:pdf/widgets.dart';

Now Try the following code it will work perfectly.

Icon(IconData(mt.Icons.check.codePoint),
                  color:
                  value PdfColors.grey,
                  size: 18,
                )