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Implemented Interfaces
GtkScrollbar implements AtkImplementorIface, GtkBuildable, GtkConstraintTarget and GtkOrientable.
Description
The GtkScrollbar widget is a horizontal or vertical scrollbar, depending on the value of the “orientation” property.
Its position and movement are controlled by the adjustment that is passed to
or created by gtk_scrollbar_new(). See GtkAdjustment 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, if present, the
stepper buttons) or by a page (using e.g. the Page Down/Up keys).
CSS nodes
1 2 3 4 |
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.
If steppers are enabled, they are represented by up to four additional subnodes with name button. These get the style classes .up and .down to indicate in which direction they are moving.
Other style classes that may be added to scrollbars inside GtkScrolledWindow include the positional classes (.left, .right, .top, .bottom) and style classes related to overlay scrolling (.overlay-indicator, .dragging, .hovering).
Functions
gtk_scrollbar_new ()
GtkWidget * gtk_scrollbar_new (GtkOrientation orientation,GtkAdjustment *adjustment);
Creates a new scrollbar with the given orientation.
Parameters
orientation |
the scrollbar’s orientation. |
|
adjustment |
the GtkAdjustment to use, or |
[allow-none] |
gtk_scrollbar_get_adjustment ()
GtkAdjustment *
gtk_scrollbar_get_adjustment (GtkScrollbar *self);
Returns the scrollbar's adjustment.
gtk_scrollbar_set_adjustment ()
void gtk_scrollbar_set_adjustment (GtkScrollbar *self,GtkAdjustment *adjustment);
Makes the scrollbar use the given adjustment.
Property Details
The “adjustment” property
“adjustment” GtkAdjustment *
The GtkAdjustment that contains the current value of this scrollbar.
Owner: GtkScrollbar
Flags: Read / Write / Construct