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andrey-ushakov / esc_pos_utils

Basic Flutter/Dart classes for ESC/POS printing
BSD 3-Clause "New" or "Revised" License
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Changing codepages does not do anything #83

Open niyonx opened 2 years ago

niyonx commented 2 years ago

I am trying to print the chinese language.

I have tried all code pages in the capabilities json but nothing changes.

I have tried this https://github.com/andrey-ushakov/esc_pos_printer/issues/62#issuecomment-676276707 with code pages but it prints some weird characters.

fuadreza commented 1 year ago

yes, any update on this?

waqadArshad commented 1 year ago

You need to go to capabilities.json -- for me the path was: C:\Flutter\flutter 3.3.1\flutter.pub-cache\hosted\pub.dartlang.org\esc_pos_utils-1.1.0\lib\resources). This is the package file.

The default section looks like this:

image

And in the default section, add the following in the codePages map:

 "253": "UTF-8",

Now in the file it would look something like this:

image

after this, go to your flutter code and add this:

    final profile = await CapabilityProfile.load(name: 'default');
    final generator = Generator(PaperSize.mm80, profile);
    bytes += generator.setGlobalCodeTable('UTF-8');

after that add the following package in your pubspec.yaml file:

charset_converter: ^2.1.1

now, do something like this: 

bytes += generator.textEncoded(
        await CharsetConverter.encode("UTF-8", 'Size 1 Product 1: 招牌韮黃鍋貼 , Signature: Pork W/ Yellow Chive'),
        styles: const PosStyles(align: PosAlign.left, bold: true));

Remember to use UTF-8 and also remember to use this same encoding setting for your printer:

image