A widget is mapped when the widget is visible (which is controlled with
gtk.widget.Widget.gboolean) and all its parents up to the toplevel widget
are also visible.
The ::map signal can be used to determine whether a widget will be drawn,
for instance it can resume an animation that was stopped during the
emission of gtk.widget.Widget.unmap.
Connect to Map signal.
Emitted when widget is going to be mapped.
A widget is mapped when the widget is visible (which is controlled with gtk.widget.Widget.gboolean) and all its parents up to the toplevel widget are also visible.
The ::map signal can be used to determine whether a widget will be drawn, for instance it can resume an animation that was stopped during the emission of gtk.widget.Widget.unmap.