Method

GtkWidgetcompute_bounds

Declaration [src]

gboolean
gtk_widget_compute_bounds (
  GtkWidget* widget,
  GtkWidget* target,
  graphene_rect_t* out_bounds
)

Description [src]

Computes the bounds for widget in the coordinate space of target.

The bounds of widget are (the bounding box of) the region that it is expected to draw in. See the coordinate system overview to learn more.

If the operation is successful, true is returned. If widget has no bounds or the bounds cannot be expressed in target‘s coordinate space (for example if both widgets are in different windows), false is returned and bounds is set to the zero rectangle.

It is valid for widget and target to be the same widget.

Parameters

target

Type: GtkWidget

The target widget.

The data is owned by the caller of the method.

out_bounds

Type: graphene_rect_t

The rectangle taking the bounds.

The argument will be set by the function.

The returned data is owned by the instance.

Return value

Type: gboolean

True if the bounds could be computed.