Describe the bug Unhandled Exception: FileSystemException: Cannot open file, path = 'Hacen_Tunisia.ttf' (OS Error: No such file or directory, errno = 2)

So iam trying to save pdf file in arabic font but it being saved with reversing words dummy ex: "hello" will be "olleh" but in arabic words so i've found that i must use the Uint8List but the file can't read the font !!

To Reproduce

final Uint8List fontData = File('Hacen_Tunisia.ttf').readAsBytesSync();
tried
final Uint8List fontData = File('fonts/Hacen_Tunisia.ttf').readAsBytesSync();
tried
final Uint8List fontData = File('../fonts/Hacen_Tunisia.ttf').readAsBytesSync();

full code

import 'dart:io';
import 'package:path_provider/path_provider.dart';
import 'package:pdf/pdf.dart';
import 'package:pdf/widgets.dart';
import 'dart:typed_data';
import 'package:open_file/open_file.dart';

Future savePdf() async {
  final Document pdf = Document(title: 'نتيجة الأختبار');
  final Uint8List fontData = File('Hacen_Tunisia.ttf').readAsBytesSync();
  final ttf = Font.ttf(fontData.buffer.asByteData());
  print(fontData.toString());
  pdf.addPage(MultiPage(
      pageFormat:
          PdfPageFormat.letter.copyWith(marginBottom: 1.5 * PdfPageFormat.cm),
      crossAxisAlignment: CrossAxisAlignment.start,
      header: (Context context) {
        if (context.pageNumber == 1) {
          return null;
        }
        return Container(
            alignment: Alignment.centerRight,
            margin: const EdgeInsets.only(bottom: 3.0 * PdfPageFormat.mm),
            padding: const EdgeInsets.only(bottom: 3.0 * PdfPageFormat.mm),
            decoration: const BoxDecoration(
                border:
                    BoxBorder(bottom: true, width: 0.5, color: PdfColors.grey)),
            child: Text('Portable Document Format',
                style: Theme.of(context)
                    .defaultTextStyle
                    .copyWith(color: PdfColors.grey)));
      },
      footer: (Context context) {
        return Container(
            alignment: Alignment.centerRight,
            margin: const EdgeInsets.only(top: 1.0 * PdfPageFormat.cm),
            child: Text('Page ${context.pageNumber} of ${context.pagesCount}',
                style: Theme.of(context)
                    .defaultTextStyle
                    .copyWith(color: PdfColors.grey)));
      },
      build: (Context context) => <Widget>[
            Text(
                "أنشطة لدعم الذكاء اللفظي\nيعد الذكاء اللفظي/ اللغوي هو القدرة على استخدام اللغة للتعبير، والتواصل، الإقناع، التحفيز، طرح معلومات وأفكار... ويتضمن الذكاء اللغوي ليس فقط إنتاج اللغة، ولكن حساسية عالية للفروق الطفيفة بينالكلمات، وترتيب وسجع الكلمات.",
                style: TextStyle(font: ttf)),
          ]));

  final output = await getExternalStorageDirectory();
  final file = File("${output.path}/rrr.pdf");
  await file.writeAsBytes(pdf.save());
  print(output.path.toString());
  OpenFile.open("${output.path}/rrr.pdf", type: "application/pdf");
}

and here is were the font is: https://ibb.co/tB0BJvQ

i can't find the problem cause iam using that font in all of the application!!

full error

E/flutter ( 6366): [ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: FileSystemException: Cannot open file, path = 'Hacen_Tunisia.ttf' (OS Error: No such file or directory, errno = 2)
E/flutter ( 6366): #0      _File.throwIfError (dart:io/file_impl.dart:643:7)
E/flutter ( 6366): #1      _File.openSync (dart:io/file_impl.dart:487:5)
E/flutter ( 6366): #2      _File.readAsBytesSync (dart:io/file_impl.dart:547:18)
E/flutter ( 6366): #3      savePdf (package:child_iq/data/savePdf.dart:11:56)
E/flutter ( 6366): <asynchronous suspension>
E/flutter ( 6366): #4      QuizResult.build.<anonymous closure> (package:child_iq/screens/quizResult.dart:145:1)
E/flutter ( 6366): #5      GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182:24)
E/flutter ( 6366): #6      TapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:365:11)
E/flutter ( 6366): #7      TapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:275:7)
E/flutter ( 6366): #8      PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:455:9)
E/flutter ( 6366): #9      PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:75:13)
E/flutter ( 6366): #10     PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:102:11)
E/flutter ( 6366): #11     _WidgetsFlutterBinding&BindingBase&GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:218:19)
E/flutter ( 6366): #12     _WidgetsFlutterBinding&BindingBase&GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:198:22)
E/flutter ( 6366): #13     _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:156:7)
E/flutter ( 6366): #14     _WidgetsFlutterBinding&BindingBase&GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:102:7)
E/flutter ( 6366): #15     _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:86:7)
E/flutter ( 6366): #16     _rootRunUnary (dart:async/zone.dart:1136:13)
E/flutter ( 6366): #17     _CustomZone.runUnary (dart:async/zone.dart:1029:19)
E/flutter ( 6366): #18     _CustomZone.runUnaryGuarded (dart:async/zone.dart:931:7)
E/flutter ( 6366): #19     _invoke1 (dart:ui/hooks.dart:252:10)
E/flutter ( 6366): #20     _dispatchPointerDataPacket (dart:ui/hooks.dart:161:5)
E/flutter ( 6366):

Fixed Windows Building Issue due to pdium download failed

• old CmakeList was failing windows build with CMake pdfium download error.
• These Config working and tested.

issue no : #933 and old issues

Dave - This looks like a great Flutter plugin and I'm hoping the issue below is something that is easily corrected.

I'm starting out trying use the plugin and getting an exception when I use the Paragraph widget. My text is more than an A4 page. So what I would like to know :

1. How can this library be used to automatically render text that can span automatically pages based on the content. I have tried to wrap the Paragraph widget within Column, ListView, Wrap and still get the exception. I have content where I do not know the size and was hoping wrapping within a MultiPage would suffice.

_pdf.addPage(MultiPage(
        pageFormat:
            PdfPageFormat.letter.copyWith(marginBottom: 1.5 * PdfPageFormat.cm),
        crossAxisAlignment: CrossAxisAlignment.start,
        header: (Context context) {
          return Container(
              alignment: Alignment.centerRight,
              margin: const EdgeInsets.only(bottom: 3.0 * PdfPageFormat.mm),
              padding: const EdgeInsets.only(bottom: 3.0 * PdfPageFormat.mm),
              decoration: const BoxDecoration(
                  border: BoxBorder(
                      bottom: true, width: 0.5, color: PdfColors.grey)),
              child: Text('Portable Document Format',
                  style: Theme.of(context)
                      .defaultTextStyle
                      .copyWith(color: PdfColors.grey)));
        },
        build: (context) => [
              Header(text: 'Header 1'),
              Lorem(length: 50),
              Header(text: 'Header 2'),
              
                      Paragraph(
                        text: ................... lots of text here .............
 

2. Are there any examples on how one can (say) draw shapes such as a rectangle bar which would (say) represent a progress bar ?

This is a very ambitious issue.

There is no reason this can't work on desktop. The plugins can be replaced with windows and Mac equivalents and it should work.

Is your feature request related to a problem? Please describe. No.

Describe the solution you'd like A widget that renders simple Charts. Should render at least

• [ ] ScatterChart
• [x] LineChart
• [x] BarChart Other chart types can be added on an as-needed basis.

Describe alternatives you've considered The alternative would have been rendering a flutter widget as an image and then adding that widget to the pdf (using the imageWrapper from printing - #251 ). This has the downside of needing to render the widget on your application before exporting it (it needs to be visible on the screen).

Additional context

Describe the bug Dear sir, i'm using this plugin, and when i run this i got the this errors, ### Helvetica-Bold has no Unicode support see https://github.com/DavBfr/dart_pdf/issues/76 how to slove this error ?

CAN YOU HELP ME PLEASE

To Reproduce Code snippet to reproduce the behavior:

import 'dart:io';
import 'package:flutter/material.dart';
import 'package:pdf/widgets.dart' as pdfLib;
import 'package:path_provider/path_provider.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {

  @override
  Widget build(BuildContext context) {
    generatePDF()async{
      final pdfLib.Document pdf = pdfLib.Document(deflate: zlib.encode);

      pdf.addPage(pdfLib.MultiPage(build: (context) => [
        pdfLib.Table.fromTextArray(context: context, data:  <List<String>>[
          ['asdasasd' , 'asdsadsadsad' , 'asdasdasdasdasdasdass' , 'asd' , 'asdasdasd']
        ]),
      ]));

      final String dir = (await getApplicationDocumentsDirectory()).path;
      print(dir);
      final String path = '$dir/test_pdf.pdf';
      final File file = File(path);
      await file.writeAsBytes(pdf.save());
    }

    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text("PDF"),
        ),
        body: Container(
          child: Center(
            child: RaisedButton(
              onPressed: generatePDF,
              child: Text("call", style: TextStyle(fontFamily: 'Helvetica'),),
            ),
          ),
        ),
      )
    );
  }
}

Expected behavior A clear and concise description of what you expected to happen.

Screenshots If applicable, add screenshots to help explain your problem.

Flutter Doctor Paste the output of running flutter doctor -v here.

Desktop (please complete the following information):

• [ ] iOS
• [ ] Android
• [ ] Browser

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context Add any other context about the problem here.

Describe the bug It is not actually a bug, it's more of an observation from my part.

-> In the https://pub.dev/packages/printing#-example-tab- the import 'package:pdf/widgets.dart' as pdf; works as expected but the naming is a bit off. You actually import the pdfWidgets (Document, Page, etc...). Why do I mention this ? Because in the final Document doc = Document(); the document is actually final pdfWidgets.Document doc = pdfWidgets.Document();. So the example (copy - paste style) doesn't work.

-> It's not a big deal (as mentioned) :) but it's important for people who don't clone your repository (or a at the beginning of the journey) and check the sources understand the concept properly.

Thanks!

Describe the bug I had spent a couple hours trying to determine why I couldn't catch an error from Printing.layoutPdf until I realized it doesn't throw exceptions at all, against what the documentation states: "throws an exception in case of error." Rather, Printing.layoutPdf handles exceptions thrown itself:

await _channel.invokeMethod<int>('printPdf', params);
bool result = false;
try {
  result = await job.onCompleted.future;
} catch (e) {
  print('Document not printed: $e');
}
_printJobs.remove(job.index);
return result;

As a personal preference, I would hope Printing.layoutPdf would throw an exception and not absorb the exception itself (this would make handling errors easier, in addition to distinguishing between the print dialog closing and an actual error), but as of now the documentation/code do not line up.

Suggested fix Although I do not know the library well at all, something as simple as the following seems like it should work to me (just remove the try/catch):

await _channel.invokeMethod<int>('printPdf', params);
bool result = await job.onCompleted.future; // this may throw an exception, as per documentation
_printJobs.remove(job.index);
return result;

Again, I do not know your library, but if printJobs.remove needs to be called no matter what, then something like this may work:

await _channel.invokeMethod<int>('printPdf', params);
try {
  return await job.onCompleted.future;
} finally {
  _printJobs.remove(job.index);
}

child:pw.PieChart( dataMap: dataMap, animationDuration: Duration(milliseconds: 800), chartLegendSpacing: 32, chartRadius: MediaQuery.of(context).size.width / 3.2, initialAngleInDegree: 0, chartType: ChartType.disc, ringStrokeWidth: 32, legendOptions: LegendOptions( showLegendsInRow: false, legendPosition: LegendPosition.left, showLegends: true, legendTextStyle: TextStyle( fontWeight: FontWeight.bold, color: Colors.white, ), ), chartValuesOptions: ChartValuesOptions( showChartValueBackground: true, showChartValues: true, showChartValuesInPercentage: false, showChartValuesOutside: false, ), )),

Unable to connect USB POS printer in flutter web app. I am creating flutter web app in which i am able to generate the PDF using this package and able to manually print from pdf to printer but when i try to connect the printer directly and try to send the pdf data to printer directly, i am unable to connect. is it possible to connect USB POS printer in flutter web app?

here are the two options that i have based on the documentations but i dont know how to get the URL for USB printer because my USB printer has only the USB interface and does not have ethernet or any other interface. hence it does not any ip address associated to this USB printer. So, my requirement is i need to connect this USB printer without the ip address. is there a way to do this?

Option:1

final printer = PrinterNetworkManager('Since i dont have ip address, what should i give if i follow this approach??',
        port: 9100, timeout: const Duration(seconds: 10));
    final res = await printer.connect();

    if (res != PosPrintResult.success) {
      print('response of the connection - ${res.msg}');
      throw Exception('Unable to connect to the printer');
    }

    final profile = await CapabilityProfile.load();
    final generator = Generator(PaperSize.mm80, profile);
    var ticket = <int>[];

    await for (var page in Printing.raster(
        await _generatePdf(PdfPageFormat.roll80, title),
        dpi: 203)) {
      final image = page.asImage();
      ticket += generator.image(image);
      ticket += generator.feed(2);
      ticket += generator.cut();
    }

    printer.printTicket(ticket);
    printer.disconnect();

Option:2

    await Printing.directPrintPdf(
                        printer: const Printer(url: 'What is the url i should give here to connect - note: i am using windows machine'),
                        // printer: (await Printing.listPrinters()).first,
                        onLayout: (format) => _generatePdf(format, title),
                      );

Please share if any other options available to connect. is there any other package i should use to connect?

Appreciate your quick response!..

Describe the bug I can't create a pdf file or open it on flutter web, but this work on android an IOS

Expected behavior Openen a new page with the PDF file or a popup OS windows to save the pdf file

Screenshots If applicable, add screenshots to help explain your problem.

Flutter Doctor Paste the output of running flutter doctor -v here.

[✓] Flutter (Channel master, 1.19.0-4.0.pre.38, on Mac OS X 10.15.4 19E287, locale es-ES)
    • Flutter version 1.19.0-4.0.pre.38 at /Users/dsman97/Library/flutter
    • Framework revision 997a6ffc00 (30 minutes ago), 2020-06-03 23:12:32 +0100
    • Engine revision 859d892f1f
    • Dart version 2.9.0 (build 2.9.0-13.0.dev 54adfeb93f)

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
    • Android SDK at /Users/dsman97/Library/Android/sdk
    • Platform android-29, build-tools 29.0.2
    • ANDROID_HOME = /Users/dsman97/Library/Android/sdk
    • Java binary at: /Users/dsman97/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/193.6514223/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 11.5)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 11.5, Build version 11E608c
    • CocoaPods version 1.9.1

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[!] Android Studio (version 4.0)
    • Android Studio at /Users/dsman97/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/193.6514223/Android Studio.app/Contents
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)

[✓] IntelliJ IDEA Ultimate Edition (version 2020.1.2)
    • IntelliJ at /Users/dsman97/Applications/JetBrains Toolbox/IntelliJ IDEA Ultimate.app
    • Flutter plugin version 41.1.4
    • Dart plugin version 192.7402

[✓] VS Code (version 1.38.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.4.1

[✓] Connected device (2 available)
    • Web Server • web-server • web-javascript • Flutter Tools
    • Chrome     • chrome     • web-javascript • Google Chrome 83.0.4103.61

! Doctor found issues in 1 category.
Process finished with exit code 0

Desktop (please complete the following information):

• [ ] iOS
• [ ] Android
• [ x] Browser

Smartphone (please complete the following information):

• Chrome

Thanks in advanced

The pdf and printing package depends on an old version of image library - image:3.0.1. This library is now at 4.0.7 and has added many features.This dependency prevents us from using newer features in that library like pixel iteration.

Please update your package

Because printing 5.9.3 depends on image ^3.0.1 and no versions of printing match >5.9.3 <6.0.0, printing ^5.9.3 requires image ^3.0.1.

Is your feature request related to a problem? Please describe. My app has a share option on the top right corner of the app bar, when we tap on the share option, we're using the method Printing.sharePDF and the share sheet on iOS is opened on the top left corner of the screen with an arrow pointing to the air. We would like to have the ability to locate the share sheet where it should be.

Describe the solution you'd like Maybe a property to locate the share sheet on the screen (top left, top right, bottom left, bottom right, etc) I have seen other packages do it likethis one.

Describe alternatives you've considered I don't have any.

Additional context

Hello sir,

I recently started using your commercial package - pdf_crypto. I want to edit an existing page, but I realized when I use the following function, pages are added before the existing page, and not overwritten:

pdf.editPage( 0, pdf.MultiPage(), );

I would like to be able to overwrite the existing page, but this function adds a MultiPage before the existing MultiPage leaving me with 2 Multipages instead of 1 overwritten Multipage.

Please help me understand how to overwrite the existing page, or delete the existing pages of the pdf. Thank you

UseCase: We are creating the letter generator service where user put their dynamic content. When user press enter to TextFormField it will break the line once, but when he tries to additional space using enter the space is not visible and line only break once.

Expected Result: When user press enter twice. First enter will break the line and Second enter will give the additional empty line spacing. Thank you! (At least if we get two lines break would be helpful.)

CODE:

text = 'I’m tendering my resignation now so that I can be as helpful as possible to you during the transition. I’ve truly enjoyed my time working with you and everyone else on our team at LMK. It’s rare to find a customer service role that offers as much opportunity to grow and learn and such a positive, I’ve recently decided to go\nyghgggghhhhhh back to \n\n\n\n\n\n\n\njkgghhhhhjschool, and my program starts in early September. I’m tendering my resignation now so that I can be as helpful as possible to you during the transition. I’ve truly enjoyed my time working with you and everyone else on our team at LMK. It’s rare to find a customer service role that offers as much opportunity to grow and learn and such a positive';

pw.Paragraph( text: text ?? '', textAlign: textAlign ?? pw.TextAlign.left, style: pw.TextStyle( fontStyle: fontStyle ?? pw.FontStyle.normal, // fontSize: fontSize ?? getFontSizeDesc(), fontSize: getFontSizeDesc(), lineSpacing: lineSpacing ?? 3, fontWeight: fontWeight ?? pw.FontWeight.normal, color: color ?? PdfColors.black, ), )

OUTPUT