Returns the size of a non-scrolling border around the outside of the scrollable. An example for this would be treeview headers. GTK+ can use this information to display overlayed graphics, like the overshoot indication, at the right position.
Retrieves the gtk.Adjustment used for horizontal scrolling.
Gets the horizontal GtkScrollablePolicy
Get the main Gtk struct
the main Gtk struct as a void*
Retrieves the gtk.Adjustment used for vertical scrolling.
Gets the vertical GtkScrollablePolicy
Sets the horizontal adjustment of the GtkScrollable
Sets the GtkScrollablePolicy to determine whether horizontal scrolling should start below the minimum width or below the natural width.
Sets the vertical adjustment of the GtkScrollable
Sets the GtkScrollablePolicy to determine whether vertical scrolling should start below the minimum height or below the natural height.
GtkScrollable is an interface that is implemented by widgets with native scrolling ability.
To implement this interface you should override the hadjustment and vadjustment properties.
Creating a scrollable widget
All scrollable widgets should do the following.
- When a parent widget sets the scrollable child widget’s adjustments, the widget should populate the adjustments’ lower, upper, step-increment, page-increment and page-size properties and connect to the value-changed signal.
- Because its preferred size is the size for a fully expanded widget, the scrollable widget must be able to cope with underallocations. This means that it must accept any value passed to its gtk.WidgetClass.WidgetClass.size_allocate|gtk.WidgetClass.size_allocate function.
- When the parent allocates space to the scrollable child widget, the widget should update the adjustments’ properties with new values.
- When any of the adjustments emits the value-changed signal, the scrollable widget should scroll its contents.