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host: raise_shell puts the shell webview above or below the tab webviews (Windows, SetWindowPos on its WebView2 container)

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Shell overlays can then draw over the panes while they stay on screen.
Returns false elsewhere, where the caller hides the tabs instead.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
CRTkafa 2026-09-29 02:00:34 +07:00
parent 74f4d02944
commit 7f3a4b2428
1 changed files with 40 additions and 0 deletions
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40
crates/waybetter-host/src/host.rs
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@ -283,6 +283,46 @@ pub fn attach_shell<R: Runtime>(shell: &Webview<R>) {
/// Where [`place_child`] last put a child webview, in logical px (x, y, width, height). Linux
/// only: there `Webview::position` is not the placement (always 0,0 outside X11 child windows).
/// Puts the shell webview above every tab webview (`on_top`), so shell menus, dialogs and drag
/// zones draw over the panes while the panes stay on screen (the shell page must then be
/// transparent where the panes are), or back below them. Returns whether this platform can:
/// Windows only (WebView2 hosts each webview in its own child window, re-ordered with
/// `SetWindowPos`; no activation or focus change). Elsewhere the caller hides the tabs instead.
pub fn raise_shell<R: Runtime>(shell: &Webview<R>, on_top: bool) -> bool {
#[cfg(windows)]
{
let _ = shell.with_webview(move |platform| {
use windows::Win32::Foundation::HWND;
use windows::Win32::UI::WindowsAndMessaging::{
SetWindowPos, HWND_BOTTOM, HWND_TOP, SWP_NOACTIVATE, SWP_NOMOVE, SWP_NOOWNERZORDER, SWP_NOSIZE,
};
let mut container = HWND::default();
// SAFETY: the shell's own live controller and its container window, on the main
// thread (with_webview runs the closure there).
unsafe {
if platform.controller().ParentWindow(&mut container).is_ok() && !container.is_invalid() {
let after = if on_top { HWND_TOP } else { HWND_BOTTOM };
let _ = SetWindowPos(
container,
Some(after),
0,
0,
0,
0,
SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE | SWP_NOOWNERZORDER,
);
}
}
});
true
}
#[cfg(not(windows))]
{
let _ = (shell, on_top);
false
}
}
#[cfg(target_os = "linux")]
pub fn placed_rect<R: Runtime>(webview: &Webview<R>) -> Option<(f64, f64, f64, f64)> {
linux::placed(webview.label())