How to get theme on tauri backend?

[gusxodnjs]

How to get theme on tauri backend?

My application is creating all webviewWindow on the Tauri backend. when I create webviewWindow on the backend,
I want to apply the current theme value. Does this plug-in support that?
I think it seems support only javascript api. Is that right?

[wyhaya]

Currently only the JavaScript API is exposed, the Rust API is not.
But it is simple, if you want, you can get the theme by writing this code.

fn get_theme_value<R: Runtime>(app: &AppHandle<R>) -> Theme {
    let config_dir = app.path().app_config_dir().unwrap();
    let p = config_dir.join("tauri-plugin-theme");
    fs::read_to_string(p)
        .map(Theme::from)
        .unwrap_or(Theme::Auto)
}

tauri-plugin-theme/tauri-plugin-theme/src/lib.rs

Lines 88 to 98 in df7229e

	fn saved_theme_value_from_config(config: &Config) -> Theme {
	if let Some(dir) = dirs_next::config_dir() {
	let p = dir
	.join(&config.identifier)
	.join(CONFIG_FILENAME);
	return fs::read_to_string(p)
	.map(Theme::from)
	.unwrap_or(Theme::Auto);
	}
	Theme::Auto
	}

---

There are some issues with this plugin (mostly on Windows), such as setting the theme directly and locking the theme.
Until these issues are resolved I would recommend not using this plugin and controlling the theme entirely with CSS and JavaScript.