Theme generator

simple dart code generator that can help you to generate flutter extension from JSON code with different formats

Usage

1. install

you should install it to pub global as command line tool dart pub global activate theme_generator_x

2. arguments

input - path to your input JSON file
output - path to your output .dart file
class_name - name of generated extension class, e.g. AppThemeDataColorsX
use_dark - flag if you need to generate dark colors too. false by default
keys_rename - how to rename JSON keys

Available options:
- camel_case - camelCase
- original - original name
- snake_case - snake_case

JSON structure

you can use different JSON key-value structures

Allowed key-values

{
    "primary": "#f6f4da",
    "secondary": "0xff9e9e9e",
    "some_color": "#ff000011"
}

array of colors

0 item - light color
1 item - dark color

{
    "composite": [
        "#f6f4da",
        "0xff9e9e9e"
    ]
}

{
    "test_color_simple": {
        "light": "#000011"
    },
    "test_color": {
        "dark": "#656213",
        "light": "#000011"
    }
}

also you can generate array of colors

{
 "simple_map_of_array": {
        "light": [
            "#656213",
            "#000011"
        ]
    },
    "simple_map_of_array_dark": {
        "light": [
            "#995577",
            "#000011"
        ],
        "dark": [
            "#110022",
            "#000000"
        ]
    }
}

CMD

theme_generator_x colors --input example/test_schema.json --output example/output.dart --class_name AppThemeDataColorsX

of course you can use absolute or relative paths to the files

theme_generator_x colors --input /Users/jWinterDay/Documents/app_theme_asset.json --output app_theme_color.dart --class_name AppThemeDataColorsX

Flutter

now you have the extensions and can use it in the flutter app

MaterialApp(
    ...
    theme: ThemeData(
        useMaterial3: true,
    ).copyWith(
        extensions: <ThemeExtension<dynamic>>[
            lightAppThemeDataColorsXData(), // generated extension function
        ],
    ),
  ...
)

jWinterDay / theme_generator_x