feat: Implement a sleep timer button to the currently playing screen

[CtznSniiips]

Adds a sleep timer to the now-playing screen. A new timer button sits in the bottom bar between the equalizer and queue buttons. Tapping it opens a dialog with preset durations — 5, 10, 15, 20, 30, 45, or 60 minutes — plus a "Custom…" option that accepts any number of minutes via a text input.

While the timer is counting down, the button turns accent-colored and a small countdown label (e.g. 4:37) appears beneath it. When the timer expires, playback pauses automatically. Tapping the button again while a timer is active shows the remaining time and offers a "Cancel Timer" button to stop it early.

Addresses #296

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[tvillega]

This is fantastic!

I want to add that the quick actions bar is also available in landscape. It is hidden by default but can be brought back by long-pressing the codec chip or the bitrate. Commenting it for tablet users that default to landscape view.

[CtznSniiips]

I want to add that the quick actions bar is also available in landscape. It is hidden by default but can be brought back by long-pressing the codec chip or the bitrate. Commenting it for tablet users that default to landscape view.

Good to know, thanks!

[pLum0]

great. Thanks for the PR 👍

In the same time I implemented a sleep-timer as well, but you were faster 🥇
You still might want to compare with my implementation: https://github.com/pLum0/tempus/tree/sleep-timer

I let my AI tool check the differences:

What PR 617 does better

1. Placement in the bottom bar is more conventional for a sleep timer (matches other music apps)
2. Visible countdown label right under the button — you can see remaining time at a glance without opening the dialog
3. Custom minute input — more flexible for users who want non-preset values
4. Proper constraint chain management — adjusts layout when equalizer is hidden/shown
5. Simpler architecture — no service/BroadcastReceiver coupling, just a singleton + listener

What my version does better

1. Process death survival — the PR's singleton is lost if Android kills the process
2. End-of-track mode — very useful for "stop after this song"
3. Fade-out — much better UX than an abrupt pause
4. Full i18n — all 15 locales translated vs. English only
5. Theme-aware icon — uses @color/titleTextColor instead of hardcoded black
6. Localized duration labels (PR has hardcoded "5 minutes" strings)
   Recommendation

Both implementations have strengths. The ideal PR would combine:

• PR feat: Implement a sleep timer button to the currently playing screen #617's singleton architecture (simpler, no broadcast IPC needed), bottom-bar placement, countdown label, and custom input
• My versions process death persistence, end-of-track mode, fade-out, i18n, and theme-aware icons

So maybe we can merge the strengths of both implementations. What would you suggest ?

[CtznSniiips]

Thanks for your feedback @pLum0. I implemented all except for translations - I'll leave that to the experts.

[tvillega]

Hey @CtznSniiips, our first batch of merges brought some conflicts to your PR. Once you solve them we will merge this as part of the second batch for a pre-release.