tauri-plugin-frame 1.1.8

Opnionated window decoration controls for Tauri apps.
Documentation 
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use tauri::{Runtime, WebviewWindow};

use crate::error::Result;

pub struct Frame<R: Runtime> {
    #[allow(dead_code)]
    app: tauri::AppHandle<R>,
}

impl<R: Runtime> Frame<R> {
    pub fn new(app: tauri::AppHandle<R>) -> Self {
        Self { app }
    }

    #[cfg(windows)]
    pub fn titlebar_height(&self) -> u32 {
        crate::get_titlebar_height()
    }

    #[cfg(not(windows))]
    pub fn titlebar_height(&self) -> u32 {
        32
    }

    #[cfg(windows)]
    pub fn auto_titlebar(&self) -> bool {
        crate::get_auto_titlebar()
    }

    #[cfg(not(windows))]
    pub fn auto_titlebar(&self) -> bool {
        false
    }
}

pub trait WebviewWindowExt<R: Runtime> {
    fn create_overlay_titlebar(&self) -> Result<&WebviewWindow<R>>;
    fn create_overlay_titlebar_with_height(&self, height: u32) -> Result<&WebviewWindow<R>>;
}

#[cfg(windows)]
impl<R: Runtime> WebviewWindowExt<R> for WebviewWindow<R> {
    fn create_overlay_titlebar(&self) -> Result<&WebviewWindow<R>> {
        self.create_overlay_titlebar_with_height(crate::get_titlebar_height())
    }

    fn create_overlay_titlebar_with_height(&self, height: u32) -> Result<&WebviewWindow<R>> {
        use tauri::Listener;

        self.set_decorations(false)?;

        let win = self.clone();
        self.listen("frame-page-load", move |event| {
            let controls: Vec<&str> = [
                win.is_minimizable().unwrap_or(false).then_some("minimize"),
                (win.is_maximizable().unwrap_or(false) && win.is_resizable().unwrap_or(false))
                    .then_some("maximize"),
                win.is_closable().unwrap_or(false).then_some("close"),
            ]
            .into_iter()
            .flatten()
            .collect();

            // right_index = number of buttons to the right of the maximize button
            // Button order (right to left): close, maximize, minimize
            let right_index = if controls.contains(&"close") { 1 } else { 0 };

            let _ = win.eval(crate::build_scripts(height, Some(controls)));
            if crate::snap_overlay_enabled() {
                let _ = crate::snap::install(&win, height, crate::get_button_width(), right_index);
            }

            let win2 = win.clone();
            win.on_window_event(move |e| {
                if matches!(e, tauri::WindowEvent::CloseRequested { .. }) {
                    let _ = crate::snap::uninstall(&win2);
                    win2.unlisten(event.id());
                }
            });
        });

        Ok(self)
    }
}

#[cfg(not(windows))]
impl<R: Runtime> WebviewWindowExt<R> for WebviewWindow<R> {
    fn create_overlay_titlebar(&self) -> Result<&WebviewWindow<R>> {
        Ok(self)
    }

    fn create_overlay_titlebar_with_height(&self, _height: u32) -> Result<&WebviewWindow<R>> {
        Ok(self)
    }
}