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gpcl

★ 24 Open GitHub ↗

GamePad Controlled Launcher written in Rust & Slint

// repository documentation

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# GamePad Controlled Launcher

This is a simple application launcher designed to be an initial screen for my home media center.
It respects gamepad inputs and displays a list of connected gamepads,
a clock and a row of applications to run.

![Screenshot](https://raw.githubusercontent.com/dngulin/gpcl/main/screenshot.png)

[Lucide icons](https://lucide.dev/) are used for gamepad status indication.

The launcher converts gamepad inputs into keyboard ones.

| Gamepad Button(s)    | Keyboard Key(s) | Action                       |
|----------------------|-----------------|------------------------------|
| DPad Buttons         | Arrow Keys      | Move the focus indicator     |
| Bottom Action Button | Enter           | Run the selected application |
| Up Action Button     | F5              | Reload configuration         |

## Configuration

The config file should be located at `$XDG_CONFIG_HOME/gpcl.toml`.
You can configure window layout and define application list.

Example config:

```toml
[layout]
top_panel_height = 80 # default: 32
clock_height = 540 # default: 270
icon_size = 256 # default: 128

[style]
font = "Liberation" # default: Ubuntu
font_weight = 700 # default: 600
bg_color = "#12781c" # default: #166dbb
panel_color = "#15ff0040" # default: #00000040
text_color = "#d9d9d9" # default: #ffffff

[[items]]
name = "Steam"
icon = "/usr/share/icons/hicolor/256x256/apps/steam.png"
exec = "steam -gamepadui"

[[items]]
name = "Kodi"
icon = "/usr/share/icons/hicolor/256x256/apps/kodi.png"
exec = "kodi"

[[items]]
name = "RetroArch"
icon = "/usr/share/pixmaps/retroarch.svg"
exec = "retroarch"

[[items]]
name = "Reboot"
icon = "/home/user/.local/share/pixmaps/reboot.png"
exec = "dbus-send --system --print-reply --dest=org.freedesktop.login1 /org/freedesktop/login1 org.freedesktop.login1.Manager.Reboot boolean:true"

[[items]]
name = "Shutdown"
icon = "/home/user/.local/share/pixmaps/shutdown.png"
exec = "dbus-send --system --print-reply --dest=org.freedesktop.login1 /org/freedesktop/login1 org.freedesktop.login1.Manager.PowerOff boolean:true"
```

The layout and style sections and their parameters are optional.
Note that layout parameters are defined in _logical_ pixels.

## Build

The launcher is written in Rust, so it is built with `cargo`. It uses `Slint` as a graphical toolkit
and uses `winit` as a backend
(required to work with windowing API not provided by `Slint`).

You can build it for Wayland, X11 or for both platforms using `wayland` (default) and `x11`
features:

- `cargo build --release` produces the Wayland-only build,
- `cargo build --release --features x11` produces the universal build that support both Wayland and
  X11
- `cargo build --release --no-default-features --features x11` produces the X11-only build

gpcl

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