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feat(app): wire the app icon into the GUI, waybar, and SDL window

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screencast_icon/ holds the single source icon set; meson install ships
the 256 px PNG into the hicolor theme for the GTK panel (themed icon
name) and the waybar CSS, and a custom target embeds it as
icon_png_data.h so the SDL receiver window sets it via SDL_SetWindowIcon
with an optional SDL3_image dependency (built-in find_library, since no
pkg-config file ships with it).
This commit is contained in:
Florian Egger
2026-09-10 11:30:39 +02:00
parent 9ff8e94679
commit 69a1cdac1d
21 changed files with 155 additions and 11 deletions
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docs/RUNBOOK.md
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@@ -146,11 +146,24 @@ screencast waybar --toggle # stop a running sender / restart the last
```
The waybar module (installed to this machine's `~/.config/waybar/` — see
`custom/screencast` there): `▶` while streaming (tooltip: receiver, bitrate,
elapsed), `⏸` while idle; left-click toggles streaming to the last receiver
via the state file, right-click opens the panel. The sender publishes its
state to `$XDG_RUNTIME_DIR/screencast/sender.json`, so every front-end —
CLI, GUI, widget — agrees on what is running.
`custom/screencast` there): the app icon as the module face (dimmed while
idle, green tint while streaming; the `▶`/`⏸` text from the JSON is hidden
in the CSS), tooltip with receiver, bitrate, elapsed; left-click toggles
streaming to the last receiver via the state file, right-click opens the
panel. The sender publishes its state to `$XDG_RUNTIME_DIR/screencast/sender.json`,
so every front-end — CLI, GUI, widget — agrees on what is running.
**Icons**: `screencast_icon/screencast_256.png` is the single app icon.
`meson install` puts it in `share/icons/hicolor/256x256/apps/screencast.png`;
the GTK panel uses it by themed name (`set_icon_name` — GTK4 removed the
pixel-buffer window icon, so themed icons only), and the waybar CSS
references the installed path. The SDL receiver window embeds the PNG at
build time (`icon_png_data.h` generated by `scripts/icon_to_header.py`) and
sets it via `SDL_SetWindowIcon` when SDL3_image is available (optional
dependency; no pkg-config ships with it, so meson finds the library
directly). Icons surface in compositor taskbars/switchers, not in title
bars (neither GTK4's CSD nor Hyprland's decorations draw them).
Restart waybar after changing `style.css` to pick up icon changes.
## Under the hood: resilience (Phase 7)