Access the assets dir easily

[osamalzabidi]

• Added the assets_dir_path method to be available for a developer to work with assets

Description

Fixes flet-dev/flet-lottie#12

Test Code

import base64

import flet as ft


def lottie_base64(name: str) -> str:
    with open(ft.assets_dir_path("animations", name), "rb") as fr:
        return base64.b64encode(fr.read()).decode()


def main(page: ft.Page) -> None:
    page.title = "Test assets_dir_path"
    page.window.width = page.window.height = 600

    page.add(
        ft.Lottie(src_base64=lottie_base64("no_internet.json"), fit=ft.ImageFit.COVER)
    )

if __name__ == "__main__":
    ft.app(main)

Type of change

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

Checklist

• I signed the CLA.
• My code follows the style guidelines of this project

Screenshots

Additional details

Tested on

[x] Linux
[] Windows
[] MacOS

Summary by Sourcery

New Features:

• Introduce the assets_dir_path method in the flet.app module to provide convenient access to the assets directory.

[FeodorFitsner]

Thanks for the your PR. Could you give an example of how it's supposed to be used in a user app?

[osamalzabidi]

Thanks for the your PR. Could you give an example of how it's supposed to be used in a user app?

In my case the Lottie animation files don't work just base64, so I want to open the file and pass it as base64 data, and other examples of data you want to work with it like .csv files.

Example

class _LottieFiles:
    def __init__(self):
        for name in os.listdir(ft.assets_dir_path("animations")):
            # self.__setattr__(name.removesuffix(".json"), self.lottie_file(name))
            self.__setattr__(name.removesuffix(".json"), self.lottie_base64(name))

    @classmethod
    def lottie_file(cls, name: str) -> str:
        return ft.assets_dir_path("animations", name)

    @classmethod
    def lottie_base64(cls, name: str) -> str:
        with open(ft.assets_dir_path("animations", name), "rb") as fr:
            return base64.b64encode(fr.read()).decode()

LottieFiles = _LottieFiles()

## Test
ft.Lottie(src_base64=LottieFiles.no_internet., fit=ft.ImageFit.COVER)

[FeodorFitsner]

Thank you for your PR! At this time, we’re not accepting refactoring PRs, non-trivial changes, or new features for Flet v0.2x. Our focus is currently on preparing the upcoming “v1” release (in the v1 branch). However, bug fixes for Flet 0.2x are still welcome.