Actually, a lot of OS X Yosemite borrows from Gnome's Gtk+, like headerbars [1]
[0] http://i.imgur.com/xBof95c.png [1] https://developer.gnome.org/gtk3/3.10/GtkHeaderBar.html
Actually, a lot of OS X Yosemite borrows from Gnome's Gtk+, like headerbars [1]
[0] http://i.imgur.com/xBof95c.png [1] https://developer.gnome.org/gtk3/3.10/GtkHeaderBar.html