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AspectFrame
===================================================================

.. currentmodule:: gi.repository.Gtk





.. class:: AspectFrame(**properties: ~typing.Any)
   :no-contents-entry:


Superclasses: :class:`~gi.repository.Gtk.Widget`, :class:`~gi.repository.GObject.InitiallyUnowned`, :class:`~gi.repository.GObject.Object`



Implemented Interfaces: :class:`~gi.repository.Gtk.Accessible`, :class:`~gi.repository.Gtk.Buildable`, :class:`~gi.repository.Gtk.ConstraintTarget`



``GtkAspectFrame`` preserves the aspect ratio of its child.

The frame can respect the aspect ratio of the child widget,
or use its own aspect ratio.

CSS nodes
--------------------------------------------------------------------------------

``GtkAspectFrame`` uses a CSS node with name ``aspectframe``\.

Accessibility
--------------------------------------------------------------------------------

Until GTK 4.10, ``GtkAspectFrame`` used the ``GTK_ACCESSIBLE_ROLE_GROUP`` role.

Starting from GTK 4.12, ``GtkAspectFrame`` uses the ``GTK_ACCESSIBLE_ROLE_GENERIC`` role.


Constructors
------------

.. rst-class:: interim-class

.. class:: AspectFrame
   :no-index:


   .. classmethod:: new(xalign: float, yalign: float, ratio: float, obey_child: bool) -> ~gi.repository.Gtk.Widget

      Create a new ``GtkAspectFrame``\.






      :param xalign: Horizontal alignment of the child within the parent.
           Ranges from 0.0 (left aligned) to 1.0 (right aligned)

      :param yalign: Vertical alignment of the child within the parent.
           Ranges from 0.0 (top aligned) to 1.0 (bottom aligned)

      :param ratio: The desired aspect ratio.

      :param obey_child: If :const:`True`, ``ratio`` is ignored, and the aspect
           ratio is taken from the requistion of the child.








Methods
-------

.. rst-class:: interim-class

.. class:: AspectFrame
   :no-index:


   .. method:: get_child() -> ~gi.repository.Gtk.Widget | None

      Gets the child widget of ``self``\.









   .. method:: get_obey_child() -> bool

      Returns whether the child's size request should override
      the set aspect ratio of the ``GtkAspectFrame``\.









   .. method:: get_ratio() -> float

      Returns the desired aspect ratio of the child.









   .. method:: get_xalign() -> float

      Returns the horizontal alignment of the child within the
      allocation of the ``GtkAspectFrame``\.









   .. method:: get_yalign() -> float

      Returns the vertical alignment of the child within the
      allocation of the ``GtkAspectFrame``\.









   .. method:: set_child(child: ~gi.repository.Gtk.Widget | None = None) -> None

      Sets the child widget of ``self``\.






      :param child: the child widget




   .. method:: set_obey_child(obey_child: bool) -> None

      Sets whether the aspect ratio of the child's size
      request should override the set aspect ratio of
      the ``GtkAspectFrame``\.






      :param obey_child: If :const:`True`, ``ratio`` is ignored, and the aspect
            ratio is taken from the requisition of the child.




   .. method:: set_ratio(ratio: float) -> None

      Sets the desired aspect ratio of the child.






      :param ratio: aspect ratio of the child




   .. method:: set_xalign(xalign: float) -> None

      Sets the horizontal alignment of the child within the allocation
      of the ``GtkAspectFrame``\.






      :param xalign: horizontal alignment, from 0.0 (left aligned) to 1.0 (right aligned)




   .. method:: set_yalign(yalign: float) -> None

      Sets the vertical alignment of the child within the allocation
      of the ``GtkAspectFrame``\.






      :param yalign: horizontal alignment, from 0.0 (top aligned) to 1.0 (bottom aligned)








Properties
----------

.. rst-class:: interim-class

.. class:: AspectFrame
   :no-index:
   

   .. attribute:: props.child
      :type: ~gi.repository.Gtk.Widget

      The type of the None singleton.







   .. attribute:: props.obey_child
      :type: bool

      The type of the None singleton.







   .. attribute:: props.ratio
      :type: float

      The type of the None singleton.







   .. attribute:: props.xalign
      :type: float

      The type of the None singleton.







   .. attribute:: props.yalign
      :type: float

      The type of the None singleton.