Scrollbar

class Scrollbar(**properties: Any)

Superclasses: Widget, InitiallyUnowned, Object

Implemented Interfaces: Accessible, AccessibleRange, Buildable, ConstraintTarget, Orientable

The GtkScrollbar widget is a horizontal or vertical scrollbar.

Its position and movement are controlled by the adjustment that is passed to or created by new. See Adjustment for more details. The value field sets the position of the thumb and must be between lower and upper - page_size. The page_size represents the size of the visible scrollable area.

The fields step_increment and page_increment fields are added to or subtracted from the value when the user asks to move by a step (using e.g. the cursor arrow keys) or by a page (using e.g. the Page Down/Up keys).

CSS nodes

scrollbar
╰── range[.fine-tune]
    ╰── trough
        ╰── slider

GtkScrollbar has a main CSS node with name scrollbar and a subnode for its contents. The main node gets the .horizontal or .vertical style classes applied, depending on the scrollbar’s orientation.

The range node gets the style class .fine-tune added when the scrollbar is in ‘fine-tuning’ mode.

Other style classes that may be added to scrollbars inside ScrolledWindow include the positional classes (.left, .right, .top, .bottom) and style classes related to overlay scrolling (.overlay-indicator, .dragging, .hovering).

Accessibility

GtkScrollbar uses the SCROLLBAR role.

Constructors

class Scrollbar

classmethod new(orientation: Orientation, adjustment: Adjustment | None = None) → Widget

Creates a new scrollbar with the given orientation.

Parameters:

• orientation – the scrollbar’s orientation.

• adjustment – the Adjustment to use, or None to create a new adjustment.

Methods

class Scrollbar

get_adjustment() → Adjustment

Returns the scrollbar’s adjustment.

set_adjustment(adjustment: Adjustment | None = None) → None

Makes the scrollbar use the given adjustment.

Parameters:

adjustment – the adjustment to set

Properties

class Scrollbar

props.adjustment: Adjustment

The type of the None singleton.