Wt::WFitLayout Class Reference

A layout manager which spans a single widget to all available space. More...

#include <Wt/WFitLayout.h>

Inheritance diagram for Wt::WFitLayout:

Public Member Functions
	WFitLayout ()
	Creates a new fit layout.
virtual void	addItem (std::unique_ptr< WLayoutItem > item) override
	Adds a layout item. More...
virtual std::unique_ptr< WLayoutItem >	removeItem (WLayoutItem *item) override
	Removes a layout item (widget or nested layout). More...
virtual WLayoutItem *	itemAt (int index) const override
	Returns the layout item at a specific index. More...
virtual int	indexOf (WLayoutItem *item) const override
	Returns the index of a given item. More...
virtual int	count () const override
	Returns the number of items in this layout. More...
Public Member Functions inherited from Wt::WLayout
virtual	~WLayout ()
	Destructor. More...
void	setPreferredImplementation (LayoutImplementation implementation)
	Set the preferred layout implementation. More...
void	addWidget (std::unique_ptr< WWidget > widget)
	Adds the given widget to the layout. More...
std::unique_ptr< WWidget >	removeWidget (WWidget *widget)
	Removes the given widget from the layout. More...
virtual WWidgetItem *	findWidgetItem (WWidget *widget) override
	Finds the widget item associated with the given widget.
virtual WWidget *	widget () override
	Returns the widget that is held by this WLayoutItem. More...
virtual WLayout *	layout () override
	Returns the layout that implements this WLayoutItem. More...
virtual WLayout *	parentLayout () const override
	Returns the layout in which this item is contained.
void	setContentsMargins (int left, int top, int right, int bottom)
	Set contents margins (in pixels). More...
void	getContentsMargins (int *left, int *top, int *right, int *bottom) const
	Returns the contents margins. More...
Public Member Functions inherited from Wt::WLayoutItem
virtual	~WLayoutItem ()
	Destructor.
Public Member Functions inherited from Wt::WObject
void	addChild (std::unique_ptr< WObject > child)
	Add a child WObject whose lifetime is determined by this WObject.
template<typename Child >
Child *	addChild (std::unique_ptr< Child > child)
	Add a child WObject, returning a raw pointer. More...
std::unique_ptr< WObject >	removeChild (WObject *child)
	Remove a child WObject, so its lifetime is no longer determined by this WObject.
virtual const std::string	id () const
	Returns the (unique) identifier for this object. More...
virtual void	setObjectName (const std::string &name)
	Sets an object name. More...
virtual std::string	objectName () const
	Returns the object name. More...
void	resetLearnedSlots ()
	Resets learned stateless slot implementations. More...
template<class T >
void	resetLearnedSlot (void(T::*method)())
	Resets a learned stateless slot implementation. More...
template<class T >
WStatelessSlot *	implementStateless (void(T::*method)())
	Declares a slot to be stateless and learn client-side behaviour on first invocation. More...
template<class T >
WStatelessSlot *	implementStateless (void(T::*method)(), void(T::*undoMethod)())
	Declares a slot to be stateless and learn client-side behaviour in advance. More...
void	isNotStateless ()
	Marks the current function as not stateless. More...
template<class T >
WStatelessSlot *	implementJavaScript (void(T::*method)(), const std::string &jsCode)
	Provides a JavaScript implementation for a method. More...
Public Member Functions inherited from Wt::Core::observable
	observable ()
	Default constructor.
virtual	~observable ()
	Destructor. More...
template<typename... Args, typename C >
auto	bindSafe (void(C::*method)(Args...))
	Protects a method call against object destruction. More...
template<typename... Args, typename C >
auto	bindSafe (void(C::*method)(Args...) const) const
	Protects a const method call against object destruction. More...
template<typename Function >
auto	bindSafe (const Function &function)
	Protects a function against object destruction. More...

Private Member Functions
virtual void	setParentWidget (WWidget *parent) override
	Internal method.

Additional Inherited Members
Public Types inherited from Wt::WObject
typedef void(WObject::*	Method) ()
	Typedef for a WObject method without arguments.
Protected Member Functions inherited from Wt::WLayout
	WLayout ()
	Create a layout.
void	update (WLayoutItem *item=nullptr)
	Update the layout. More...
Protected Member Functions inherited from Wt::WObject
virtual WStatelessSlot *	getStateless (Method method)
	On-demand stateless slot implementation. More...

Detailed Description

A layout manager which spans a single widget to all available space.

This layout manager may manage only a single child widget, and sizes that widget so that it uses all space available in the parent.

Member Function Documentation

void Wt::WFitLayout::addItem ( std::unique_ptr< WLayoutItem >  item )

overridevirtual

Adds a layout item.

The item may be a widget or nested layout.

How the item is layed out with respect to siblings is implementation specific to the layout manager. In some cases, a layout manager will overload this method with extra arguments that specify layout options.

See also

removeItem(WLayoutItem *), addWidget(WWidget *)

Implements Wt::WLayout.

int Wt::WFitLayout::count ( ) const

overridevirtual

Returns the number of items in this layout.

This may be a theoretical number, which is greater than the actual number of items. It can be used to iterate over the items in the layout, in conjunction with itemAt().

Implements Wt::WLayout.

int Wt::WFitLayout::indexOf ( WLayoutItem *  item ) const

overridevirtual

Returns the index of a given item.

The default implementation loops over all items, and returns the index for which itemAt(index) equals item.

See also

itemAt(int) const

Reimplemented from Wt::WLayout.

WLayoutItem * Wt::WFitLayout::itemAt ( int  index ) const

overridevirtual

Returns the layout item at a specific index.

If there is no item at the index, 0 is returned.

See also

indexOf(WLayoutItem *) const, count()

Implements Wt::WLayout.

std::unique_ptr< WLayoutItem > Wt::WFitLayout::removeItem ( WLayoutItem *  item )

overridevirtual

Removes a layout item (widget or nested layout).

See also

addItem(WLayoutItem *), removeWidget(WWidget *)

Implements Wt::WLayout.