Add a blur to backdrop images

[haydenzeller]

Changes

Add a checkbox in the Theme customization view to blur the backdrop images. Add blurBackdropEnable to UserPreferences. Add _blur to BackgroundService. Add conditional modifier in AppBackground Image() to blur using androidx.compose.ui.draw.blur.

Issues

fix #3642

[nielsvanvelzen]

I don't mind adding a blur to the background, that most likely improves the design. But adding an option for it is entirely unnecessary.

[haydenzeller]

Yes I agree, another menu item is rather cumbersome. I was just unsure if you wanted this feature by default or by user pref so I added it just in case. I will update my branch.

[nielsvanvelzen]

Aside from the invalid formatting that needs to be fixed I found one issue, the server splash screen when authenticating should not be blurred.

[nielsvanvelzen]

Awesome!

[acordtag]

Hello, where does the 'enable' option appear within the Android TV interface? - cannot be seen on the 'Customization' section; it only appears the "Show backdrops" option.

Currently running Server 10.9.9 and AndroidTV Jellyfin 0.17.3

[nielsvanvelzen]

Background blur is always enabled on supported devices (Android 12 and newer).

[Antonio1637]

Hello. Is it possible to disable this features. I have a headache while reading text and scrolling. Blur effect is across whole screen and it does not like nice.

[nielsvanvelzen]

Please open an issue for that. If there's enough demand we may add an option for it.