A simple Gnome-Shell Extension https://extensions.gnome.org/extension/496/show-desktop-from-overview/ Very small extension which minimizes all windows when you click on an empty space in the windows-overview-mode.
Commit Changes via GitHub or via Mail to [email protected]
Changelog:
Version 7: Compatibility for Gnome-Shell 3.12: removed tracker.is_window_interesting as it doesn't exist anymore Version 6: Compatibility for Gnome-Shell 3.10 Version 5: Compatibility for Gnome-Shell 3.8 Version 3&4: Don't minimize icons on desktop if shown there