Function registerWindow

tiling.js:3451–3589

(metaWindow)

}

export function registerWindow(metaWindow) {
    if (is_override_redirect(metaWindow)) {
        return false;
    }

    if (metaWindow.clone) {
        // Can now happen when setting session-modes to "unlock-dialog" or
        // resetting gnome-shell in-place (e.g. on X11)
        console.warn("window already registered", metaWindow.title);
        return false;
    }

    const actor = metaWindow.get_compositor_private();
    const cloneActor = new Clutter.Clone({ source: actor });
    const clone = new Clutter.Actor();
    clone.add_child(cloneActor);

    // create shade
    const shade = new St.Widget({ style_class: 'paperwm-clone-shade' });
    // default opacity
    clone.add_child(shade);
    Utils.actor_raise(shade);
    shade.opacity = 0;
    shade.hide();

    metaWindow.clone = clone;
    metaWindow.clone.cloneActor = cloneActor;
    metaWindow.clone.shade = shade;

    clone.targetX = 0;
    clone.meta_window = metaWindow;

    signals.connect(metaWindow, "focus", (metaWindow, user_data) => {
        focus_handler(metaWindow, user_data);
    });
    signals.connect(metaWindow, 'size-changed', allocateClone);
    // Note: runs before gnome-shell's minimize handling code
    signals.connect(metaWindow, 'notify::fullscreen', () => {
        // if window is in a column, expel it
        barf(metaWindow, metaWindow);

        /**
         * Set fullscreen windows to "always on top".  This is to ensure
         * that the fullscreened window is "above" modal windows.
         */
        if (metaWindow.fullscreen) {
            // get current "above" value (for later restoring)
            metaWindow._fullscreen_above = metaWindow.is_above();
            metaWindow.make_above();
        }
        else if (metaWindow._fullscreen_above !== null) {
            if (!metaWindow._fullscreen_above) {
                metaWindow.unmake_above();
            }
            delete metaWindow._fullscreen_above;
        }

        spaces.spaceOfWindow(metaWindow)?.setSpaceTopbarElementsVisible(true);