gtkmm: Gtk::BoxLayout Class Reference

Layout manager for placing all children in a single row or column. More...

#include <gtkmm/boxlayout.h>

Inheritance diagram for Gtk::BoxLayout:

[legend]

Public Member Functions
	BoxLayout (BoxLayout &&src) noexcept

BoxLayout &	operator= (BoxLayout &&src) noexcept

	~BoxLayout () noexcept override

GtkBoxLayout *	gobj ()
	Provides access to the underlying C GObject.

const GtkBoxLayout *	gobj () const
	Provides access to the underlying C GObject.

GtkBoxLayout *	gobj_copy ()
	Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

void	set_homogeneous (bool homogeneous=true)
	Sets whether the box layout will allocate the same size to all children.

bool	get_homogeneous () const
	Returns whether the layout is set to be homogeneous.

void	set_spacing (guint spacing)
	Sets how much spacing to put between children.

guint	get_spacing () const
	Returns the space that box_layout puts between children.

void	set_baseline_position (BaselinePosition position)
	Sets the baseline position of a box layout.

BaselinePosition	get_baseline_position () const
	Gets the value set by set_baseline_position().

void	set_baseline_child (int child)
	Sets the index of the child that determines the baseline in vertical layout.

int	get_baseline_child () const
	Gets the value set by set_baseline_child().

Glib::PropertyProxy< bool >	property_homogeneous ()
	Whether the box layout should distribute the available space equally among the children.

Glib::PropertyProxy_ReadOnly< bool >	property_homogeneous () const
	Whether the box layout should distribute the available space equally among the children.

Glib::PropertyProxy< int >	property_spacing ()
	The space to put between the children.

Glib::PropertyProxy_ReadOnly< int >	property_spacing () const
	The space to put between the children.

Glib::PropertyProxy< int >	property_baseline_child ()
	The child that determines the baseline of the box in vertical layout.

Glib::PropertyProxy_ReadOnly< int >	property_baseline_child () const
	The child that determines the baseline of the box in vertical layout.

Glib::PropertyProxy< BaselinePosition >	property_baseline_position ()
	The position of the allocated baseline within the extra space allocated to each child.

Glib::PropertyProxy_ReadOnly< BaselinePosition >	property_baseline_position () const
	The position of the allocated baseline within the extra space allocated to each child.

Public Member Functions inherited from Gtk::LayoutManager
	LayoutManager (LayoutManager &&src) noexcept

LayoutManager &	operator= (LayoutManager &&src) noexcept

	~LayoutManager () noexcept override

GtkLayoutManager *	gobj ()
	Provides access to the underlying C GObject.

const GtkLayoutManager *	gobj () const
	Provides access to the underlying C GObject.

GtkLayoutManager *	gobj_copy ()
	Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

void	measure (Widget &widget, Orientation orientation, int for_size, int & minimum, int & natural, int &minimum_baseline, int &natural_baseline) const
	Measures the size of the widget using manager, for the given orientation and size.

void	allocate (Widget &widget, int width, int height, int baseline)
	Assigns the given width, height, and baseline to a widget, and computes the position and sizes of the children of the widget using the layout management policy of manager.

SizeRequestMode	get_request_mode () const
	Retrieves the request mode of manager.

Widget *	get_widget ()
	Retrieves the `Gtk::Widget` using the given `Gtk::LayoutManager`.

const Widget *	get_widget () const
	Retrieves the `Gtk::Widget` using the given `Gtk::LayoutManager`.

void	layout_changed ()
	Queues a resize on the `Gtk::Widget` using manager, if any.

Glib::RefPtr< LayoutChild >	get_layout_child (Widget &child)
	Retrieves a `Gtk::LayoutChild` instance for the `Gtk::LayoutManager`, creating one if necessary.

Glib::RefPtr< const LayoutChild >	get_layout_child (Widget &child) const
	Retrieves a `Gtk::LayoutChild` instance for the `Gtk::LayoutManager`, creating one if necessary.

Public Member Functions inherited from Gtk::Orientable
	Orientable (Orientable &&src) noexcept

Orientable &	operator= (Orientable &&src) noexcept

	~Orientable () noexcept override

GtkOrientable *	gobj ()
	Provides access to the underlying C GObject.

const GtkOrientable *	gobj () const
	Provides access to the underlying C GObject.

void	set_orientation (Orientation orientation)
	Sets the orientation of the orientable.

Orientation	get_orientation () const
	Retrieves the orientation of the orientable.

Glib::PropertyProxy< Orientation >	property_orientation ()
	The orientation of the orientable.

Glib::PropertyProxy_ReadOnly< Orientation >	property_orientation () const
	The orientation of the orientable.

Static Public Member Functions
static GType	get_type ()
	Get the GType for this class, for use with the underlying GObject type system.

static Glib::RefPtr< BoxLayout >	create (Orientation orientation=Orientation::HORIZONTAL)

Static Public Member Functions inherited from Gtk::LayoutManager
static GType	get_type ()
	Get the GType for this class, for use with the underlying GObject type system.

Static Public Member Functions inherited from Gtk::Orientable
static void	add_interface (GType gtype_implementer)

static GType	get_type ()
	Get the GType for this class, for use with the underlying GObject type system.

Protected Member Functions
	BoxLayout (Orientation orientation=Orientation::HORIZONTAL)

Protected Member Functions inherited from Gtk::LayoutManager
	LayoutManager ()
	There is no create() method that corresponds to this constructor, because only derived classes shall be created.

virtual SizeRequestMode	get_request_mode_vfunc (const Widget &widget) const

virtual void	measure_vfunc (const Widget &widget, Orientation orientation, int for_size, int & minimum, int & natural, int &minimum_baseline, int &natural_baseline) const

virtual void	allocate_vfunc (const Widget &widget, int width, int height, int baseline)

virtual Glib::RefPtr< LayoutChild >	create_layout_child_vfunc (const Widget &widget, const Widget &for_child)

virtual void	root_vfunc ()

virtual void	unroot_vfunc ()

Protected Member Functions inherited from Gtk::Orientable
	Orientable ()
	You should derive from this class to use it.

Related Symbols
(Note that these are not member symbols.)
Glib::RefPtr< Gtk::BoxLayout >	wrap (GtkBoxLayout *object, bool take_copy=false)
	A Glib::wrap() method for this object.

Related Symbols inherited from Gtk::LayoutManager
Glib::RefPtr< Gtk::LayoutManager >	wrap (GtkLayoutManager *object, bool take_copy=false)
	A Glib::wrap() method for this object.

Related Symbols inherited from Gtk::Orientable
Glib::RefPtr< Gtk::Orientable >	wrap (GtkOrientable *object, bool take_copy=false)
	A Glib::wrap() method for this object.

Detailed Description

Layout manager for placing all children in a single row or column.

A Gtk::BoxLayout is a layout manager that arranges the children of any widget using it into a single row or column, depending on the value of its Gtk::Orientable::property_orientation(). Within the other dimension all children all allocated the same size. The Gtk::BoxLayout will respect Gtk::Widget::property_halign() and Gtk::Widget::property_valign() of each child widget.

If you want all children to be assigned the same size, you can use property_homogeneous().

If you want to specify the amount of space placed between each child, you can use the property_spacing().

Since gtkmm 3.96:

Constructor & Destructor Documentation

◆ BoxLayout() [1/2]

Gtk::BoxLayout::BoxLayout ( BoxLayout && src )

noexcept

◆ ~BoxLayout()

Gtk::BoxLayout::~BoxLayout ( )

overridenoexcept

◆ BoxLayout() [2/2]

Gtk::BoxLayout::BoxLayout ( Orientation orientation = Orientation::HORIZONTAL )

explicitprotected

Member Function Documentation

◆ create()

static Glib::RefPtr< BoxLayout > Gtk::BoxLayout::create ( Orientation orientation = Orientation::HORIZONTAL )

static

◆ get_baseline_child()

int Gtk::BoxLayout::get_baseline_child ( ) const

Gets the value set by set_baseline_child().

Since gtkmm 4.12:

Returns: The index of the child that determines the baseline in vertical layout, or -1.

◆ get_baseline_position()

BaselinePosition Gtk::BoxLayout::get_baseline_position ( ) const

Gets the value set by set_baseline_position().

Returns: The baseline position.

◆ get_homogeneous()

bool Gtk::BoxLayout::get_homogeneous ( ) const

Returns whether the layout is set to be homogeneous.

Return: true if the layout is homogeneous

◆ get_spacing()

guint Gtk::BoxLayout::get_spacing ( ) const

Returns the space that box_layout puts between children.

Returns: The spacing of the layout.

◆ get_type()

static GType Gtk::BoxLayout::get_type ( )

static

Get the GType for this class, for use with the underlying GObject type system.

◆ gobj() [1/2]

GtkBoxLayout * Gtk::BoxLayout::gobj ( )

inline

Provides access to the underlying C GObject.

◆ gobj() [2/2]

const GtkBoxLayout * Gtk::BoxLayout::gobj ( ) const

inline

Provides access to the underlying C GObject.

◆ gobj_copy()

GtkBoxLayout * Gtk::BoxLayout::gobj_copy ( )

Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

◆ operator=()

BoxLayout & Gtk::BoxLayout::operator= ( BoxLayout && src )

noexcept

◆ property_baseline_child() [1/2]

Glib::PropertyProxy< int > Gtk::BoxLayout::property_baseline_child ( )

The child that determines the baseline of the box in vertical layout.

If the child does baseline positioning, then its baseline is lined up with the baseline of the box. If it doesn't, then the bottom edge of the child is used.

Since gtkmm 4.12:

Default value: -1

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

◆ property_baseline_child() [2/2]

Glib::PropertyProxy_ReadOnly< int > Gtk::BoxLayout::property_baseline_child ( ) const

The child that determines the baseline of the box in vertical layout.

If the child does baseline positioning, then its baseline is lined up with the baseline of the box. If it doesn't, then the bottom edge of the child is used.

Since gtkmm 4.12:

Default value: -1

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

◆ property_baseline_position() [1/2]

Glib::PropertyProxy< BaselinePosition > Gtk::BoxLayout::property_baseline_position ( )

The position of the allocated baseline within the extra space allocated to each child.

This property is only relevant for horizontal layouts containing at least one child with a baseline alignment.

Default value: Gtk::BaselinePosition::CENTER

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

◆ property_baseline_position() [2/2]

Glib::PropertyProxy_ReadOnly< BaselinePosition > Gtk::BoxLayout::property_baseline_position ( ) const

The position of the allocated baseline within the extra space allocated to each child.

This property is only relevant for horizontal layouts containing at least one child with a baseline alignment.

Default value: Gtk::BaselinePosition::CENTER

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

◆ property_homogeneous() [1/2]

Glib::PropertyProxy< bool > Gtk::BoxLayout::property_homogeneous ( )

Whether the box layout should distribute the available space equally among the children.

Default value: false

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

◆ property_homogeneous() [2/2]

Glib::PropertyProxy_ReadOnly< bool > Gtk::BoxLayout::property_homogeneous ( ) const

Whether the box layout should distribute the available space equally among the children.

Default value: false

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

◆ property_spacing() [1/2]

Glib::PropertyProxy< int > Gtk::BoxLayout::property_spacing ( )

The space to put between the children.

Default value: 0

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

◆ property_spacing() [2/2]

Glib::PropertyProxy_ReadOnly< int > Gtk::BoxLayout::property_spacing ( ) const

The space to put between the children.

Default value: 0

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

◆ set_baseline_child()

void Gtk::BoxLayout::set_baseline_child ( int child )

Sets the index of the child that determines the baseline in vertical layout.

Since gtkmm 4.12:

Parameters

child The child position, or -1.

◆ set_baseline_position()

void Gtk::BoxLayout::set_baseline_position ( BaselinePosition position )

Sets the baseline position of a box layout.

The baseline position affects only horizontal boxes with at least one baseline aligned child. If there is more vertical space available than requested, and the baseline is not allocated by the parent then the given position is used to allocate the baseline within the extra space available.

Parameters

position A Gtk::BaselinePosition.

◆ set_homogeneous()

void Gtk::BoxLayout::set_homogeneous ( bool homogeneous = true )

Sets whether the box layout will allocate the same size to all children.

Parameters

homogeneous true to set the box layout as homogeneous.

◆ set_spacing()

void Gtk::BoxLayout::set_spacing ( guint spacing )

Sets how much spacing to put between children.

Parameters

spacing The spacing to apply between children.

Friends And Related Symbol Documentation

◆ wrap()

Glib::RefPtr< Gtk::BoxLayout > wrap	(	GtkBoxLayout *	object,
		bool	take_copy = `false`
	)

A Glib::wrap() method for this object.

Parameters

object	The C instance.
take_copy	False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns: A C++ instance that wraps this C instance.

Public Member Functions

Static Public Member Functions

Protected Member Functions

Related Symbols

Detailed Description

Constructor & Destructor Documentation

◆ BoxLayout() [1/2]

◆ ~BoxLayout()

◆ BoxLayout() [2/2]

Member Function Documentation

◆ create()

◆ get_baseline_child()

◆ get_baseline_position()

◆ get_homogeneous()

◆ get_spacing()

◆ get_type()

◆ gobj() [1/2]

◆ gobj() [2/2]

◆ gobj_copy()

◆ operator=()

◆ property_baseline_child() [1/2]

◆ property_baseline_child() [2/2]

◆ property_baseline_position() [1/2]

◆ property_baseline_position() [2/2]

◆ property_homogeneous() [1/2]

◆ property_homogeneous() [2/2]

◆ property_spacing() [1/2]

◆ property_spacing() [2/2]

◆ set_baseline_child()

◆ set_baseline_position()

◆ set_homogeneous()

◆ set_spacing()

Friends And Related Symbol Documentation

◆ wrap()