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joseph-grabinger / flutter_to_pdf

Create PDFs but work with normal Flutter Widgets.
MIT License
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Unsupported Font: lato #80

Closed jhoncke2 closed 3 months ago

jhoncke2 commented 3 months ago

I am converting a widget in to pdf with the function ExportDelegate.exportToPdfDocument(frameId). But, the method throws the error Unsupported Font: lato. Lato is a font that i added from google fonts to the project in pubspec.yalm. And, i am using this font into the widget that i am converting to pdf. Please, help me.

This is the stacktrace:

I/flutter ( 4678): Exception: Unsupported Font: lato I/flutter ( 4678): #0 TextStyleConverter.resolveFont (package:flutter_to_pdf/args/text_style.dart:61:9) I/flutter ( 4678): #1 TextStyleConverter.toPdfTextStyle (package:flutter_to_pdf/args/text_style.dart:36:36) I/flutter ( 4678): #2 TextConverter.toPdfWidget (package:flutter_to_pdf/widgets/text.dart:21:23) I/flutter ( 4678): #3 ExportInstance.matchWidget (package:flutter_to_pdf/export_instance.dart:173:34) I/flutter ( 4678): #4 ExportInstance._visit (package:flutter_to_pdf/export_instance.dart:55:29) I/flutter ( 4678): I/flutter ( 4678): #5 ExportInstance.matchWidget (package:flutter_to_pdf/export_instance.dart:226:48) I/flutter ( 4678): I/flutter ( 4678): #6 ExportInstance._visit (package:flutter_to_pdf/export_instance.dart:55:23) I/flutter ( 4678): I/flutter ( 4678): #7 ExportInstance.matchWidget (package:flutter_to_pdf/export_instance.dart:84:31) I/flutter ( 4678): I/flutter ( 4678): #8 ExportInstance._visit (package:flutter_to_pdf/export_instance.dart:55:23) I/flutter ( 4678): I/flutter ( 4678): #9 ExportInstance.matchWidget (package:flutter_to_pdf/export_instance.dart:150:31) I/flutter ( 4678): I/flutter ( 4678): #10

joseph-grabinger commented 3 months ago

Are you using the google_fonts package?

Or are you using a custom Lato font which you added as a font asset to the projects pubspec.yml ?

jhoncke2 commented 3 months ago

I added it as a font asset to the projects pybspec.yaml

El vie, 2 ago 2024 a la(s) 11:44 a.m., Joseph Grabinger ( @.***) escribió:

Are you using the google_fonts https://pub.dev/packages/google_fonts package?

Or are you using a custom Lato font which you added as a font asset to the projects pubspec.yml ?

— Reply to this email directly, view it on GitHub https://github.com/joseph-grabinger/flutter_to_pdf/issues/80#issuecomment-2265776574, or unsubscribe https://github.com/notifications/unsubscribe-auth/ADMIA2KJ65LL3IUME2ONVTTZPOZPNAVCNFSM6AAAAABL252RV6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDENRVG43TMNJXGQ . You are receiving this because you authored the thread.Message ID: @.***>

joseph-grabinger commented 3 months ago

The error you're experiencing is hinting your ExportDelegate dosen't know the font 'lato' (Note: this is case sensitive). This error is explicitly thrown when a provided custom font name is not registered in the ExportDelegate's fontData (see https://github.com/joseph-grabinger/flutter_to_pdf/blob/main/lib/args/text_style.dart#L66).

Did you register the font (in this case lato) when instantiating the ExportDelegate like the following? 

final ExportDelegate myExportDelegate = ExportDelegate(
    ttfFonts: {
      'lato': 'assets/fonts/Lato-Regular.ttf', // Path can differ but should point to the correct location of the ttf-file
    },
  );

Furthermore, you must then use the same ExportDelegate to export the frame containing the fonts. 

final pdf = await myExportDelegate.exportToPdfDocument('someFrameID');
jhoncke2 commented 3 months ago

Thank you for the help. Which version of the flutterToPdf package do i have to use? I have in my pubspec.yaml the version 0.1.1 and the constructor of ExportDelegate has just the parameter "options" which type is ExportOptions.

El sáb, 3 ago 2024 a la(s) 1:10 p.m., Joseph Grabinger ( @.***) escribió:

Did you register the font (in this case lato) when instantiating the ExportDelegate like the following?

final ExportDelegate myExportDelegate = ExportDelegate( ttfFonts: { 'lato': 'assets/fonts/Lato-Regular.ttf', // Path can differ but should point to the correct location of the ttf-file }, );

Furthermore, you must then use the same ExportDelegate to export the frame containing the fonts.

final pdf = await myExportDelegate.exportToPdfDocument('someFrameID');

— Reply to this email directly, view it on GitHub https://github.com/joseph-grabinger/flutter_to_pdf/issues/80#issuecomment-2267090757, or unsubscribe https://github.com/notifications/unsubscribe-auth/ADMIA2K65MD55YKOCQ2WCBDZPUMLDAVCNFSM6AAAAABL252RV6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDENRXGA4TANZVG4 . You are receiving this because you authored the thread.Message ID: @.***>

jhoncke2 commented 3 months ago

I have solved the problem by updating the package version to 0.2.0 and applying your solution. Thank you so much.

El lun, 5 ago 2024 a la(s) 2:49 p.m., Jhonatan Andrés Amórtegui García ( @.***) escribió:

Thank you for the help. Which version of the flutterToPdf package do i have to use? I have in my pubspec.yaml the version 0.1.1 and the constructor of ExportDelegate has just the parameter "options" which type is ExportOptions.

El sáb, 3 ago 2024 a la(s) 1:10 p.m., Joseph Grabinger ( @.***) escribió:

Did you register the font (in this case lato) when instantiating the ExportDelegate like the following?

final ExportDelegate myExportDelegate = ExportDelegate( ttfFonts: { 'lato': 'assets/fonts/Lato-Regular.ttf', // Path can differ but should point to the correct location of the ttf-file }, );

Furthermore, you must then use the same ExportDelegate to export the frame containing the fonts.

final pdf = await myExportDelegate.exportToPdfDocument('someFrameID');

— Reply to this email directly, view it on GitHub https://github.com/joseph-grabinger/flutter_to_pdf/issues/80#issuecomment-2267090757, or unsubscribe https://github.com/notifications/unsubscribe-auth/ADMIA2K65MD55YKOCQ2WCBDZPUMLDAVCNFSM6AAAAABL252RV6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDENRXGA4TANZVG4 . You are receiving this because you authored the thread.Message ID: @.***>