[Feature Request] onChangeTheme method

[YehudaKremer]

Hello, thank you for this useful package.

Is it possible to add an event method that fire when the windows theme is changed:

1. dark mode activated/turn off
2. color theme changed

Anyway, thanks again! 👍

[lijy91]

I added the setBrightness method, which can toggle between light/dark mode.

QQ20220306-160841-HD.mp4

[YehudaKremer]

Thanks for the super quick response and the nice toggle function (i will use it) 👍

But I meant that when the user goes to windows settings and manually change the system theme mode or theme color,
then the function onChangeTheme will fire up so my app will know that is time to use: await SystemTheme.accentInstance.load();

Sorry if I was not clear enough 😓

[lijy91]

@YehudaKremer

The flutter engine supports monitoring theme changes, you just need to call setBrightness there.

1. Detect the dark mode using, WidgetsBinding.instance?.window.platformBrightness
2. You may also have to listen for the brightness changes from the system in order to update in real-time using WidgetsBindingObserver, and overriding, didChangePlatformBrightness();

Currently in windows this must be added https://github.com/flutter/flutter/pull/88520/files

https://stackoverflow.com/a/62607827

[lijy91]

QQ.20220306170813_Trim.mp4

[lijy91]

Supported, will be released in the next version

[YehudaKremer]

Thank you! I didn't know that.

Theme Mode change detection, worked only after I added what you quote:

Currently in windows this must be added https://github.com/flutter/flutter/pull/88520/files

Very cool!

The only extra thing that I don't know if it's covered by Flutter for windows,
is the change detection of theme color (not the theme mode),

Do you know anything about that?

[lijy91]

Unfortunately, it cannot detect custom themes, I don't find a solution right now.

[YehudaKremer]

I guess it's early days for flutter-windows...

Thanks again for your help (6eb721c) and knowledge share (#86 (comment)) 👍

[lijy91]

By the way, you can use system_theme to get the system accent color.

[YehudaKremer]

Already using it, works well 👍