PR #1439 authored and submitted by @JustForFun88
I understand this PR combines two areas of work — refactoring the
Applications widget and introducing a new icon caching system —
which would ideally be submitted separately.
Originally, I only intended to reduce allocations and simplify icon
loading in `applications.rs`, but as I worked through it, it became
clear that a more general-purpose caching system was needed. One
improvement led to another ... 😄
Apologies for bundling these changes together. If needed, I’m happy to
split this PR into smaller, focused ones.
Key Changes
- Introduced `IconsCache` with unified in-memory image & texture
management.
- Added `ImageIcon` and `ImageIconId` (based on path or HWND) for
caching and reuse.
- `Icon::Image` now wraps `ImageIcon`, decoupled from direct `RgbaImage`
usage.
- Extracted app launch logic into `UserCommand` with built-in cooldown.
- Simplified config parsing and UI hover rendering in `App`.
- Replaced legacy `ICON_CACHE` in
`KomorebiNotificationStateContainerInformation`
→ Now uses the shared `ImageIcon::try_load(hwnd, ..)` with caching and fallback.
Motivation
- Reduce redundant image copies and avoid repeated pixel-to-texture
conversions.
- Cleanly separate concerns for launching and icon handling.
- Reuse icons across `Applications`, Komorebi windows, and potentially
more in the future.
Tested
- Works on Windows 11.
- Verified path/exe/HWND icon loading and fallback.
This pull request introduces a new Applications widget that displays a
user-defined list of application launchers in the UI. Each app entry
supports an icon, a label, and executes its configured command on click.
The design of this widget is inspired by the Applications Widget of YASB
Reborn. I personally missed this functionality and aimed to bring a
similar experience to komorebi-bar.
Further information is in the text of PR #1415
JustForFun88