This is a delegate that will paint the triangle. More...

#include <qcolumnview_p.h>

Inheritance diagram for QColumnViewDelegate:

Collaboration diagram for QColumnViewDelegate:

Public Member Functions
	QColumnViewDelegate (QObject *parent=nullptr)

	~QColumnViewDelegate ()

void	paint (QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const override
	This pure abstract function must be reimplemented if you want to provide custom rendering.

Public Member Functions inherited from QStyledItemDelegate
	QStyledItemDelegate (QObject *parent=nullptr)
	Constructs an item delegate with the given parent.

	~QStyledItemDelegate ()
	Destroys the item delegate.

void	paint (QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const override
	Renders the delegate using the given painter and style option for the item specified by index.

QSize	sizeHint (const QStyleOptionViewItem &option, const QModelIndex &index) const override
	Returns the size needed by the delegate to display the item specified by index, taking into account the style information provided by option.

QWidget *	createEditor (QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const override
	Returns the widget used to edit the item specified by index for editing.

void	setEditorData (QWidget *editor, const QModelIndex &index) const override
	Sets the data to be displayed and edited by the editor from the data model item specified by the model index.

void	setModelData (QWidget editor, QAbstractItemModel model, const QModelIndex &index) const override
	Gets data from the editor widget and stores it in the specified model at the item index.

void	updateEditorGeometry (QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const override
	Updates the editor for the item specified by index according to the style option given.

QItemEditorFactory *	itemEditorFactory () const
	Returns the editor factory used by the item delegate.

void	setItemEditorFactory (QItemEditorFactory *factory)
	Sets the editor factory to be used by the item delegate to be the factory specified.

virtual QString	displayText (const QVariant &value, const QLocale &locale) const
	This function returns the string that the delegate will use to display the Qt::DisplayRole of the model in locale.

Public Member Functions inherited from QAbstractItemDelegate
	QAbstractItemDelegate (QObject *parent=nullptr)
	Creates a new abstract item delegate with the given parent.

virtual	~QAbstractItemDelegate ()
	Destroys the abstract item delegate.

virtual void	paint (QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const =0
	This pure abstract function must be reimplemented if you want to provide custom rendering.

virtual QSize	sizeHint (const QStyleOptionViewItem &option, const QModelIndex &index) const =0
	This pure abstract function must be reimplemented if you want to provide custom rendering.

virtual QWidget *	createEditor (QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
	Returns the editor to be used for editing the data item with the given index.

virtual void	destroyEditor (QWidget *editor, const QModelIndex &index) const
	Called when the editor is no longer needed for editing the data item with the given index and should be destroyed.

virtual void	setEditorData (QWidget *editor, const QModelIndex &index) const
	Sets the contents of the given editor to the data for the item at the given index.

virtual void	setModelData (QWidget editor, QAbstractItemModel model, const QModelIndex &index) const
	Sets the data for the item at the given index in the model to the contents of the given editor.

virtual void	updateEditorGeometry (QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const
	Updates the geometry of the editor for the item with the given index, according to the rectangle specified in the option.

virtual bool	editorEvent (QEvent event, QAbstractItemModel model, const QStyleOptionViewItem &option, const QModelIndex &index)
	When editing of an item starts, this function is called with the event that triggered the editing, the model, the index of the item, and the option used for rendering the item.

virtual bool	helpEvent (QHelpEvent event, QAbstractItemView view, const QStyleOptionViewItem &option, const QModelIndex &index)

virtual QList< int >	paintingRoles () const

Public Member Functions inherited from QObject
Q_INVOKABLE	QObject (QObject *parent=nullptr)
	Constructs an object with parent object parent.

virtual	~QObject ()
	Destroys the object, deleting all its child objects.

virtual bool	event (QEvent *event)
	This virtual function receives events to an object and should return true if the event e was recognized and processed.

virtual bool	eventFilter (QObject watched, QEvent event)
	Filters events if this object has been installed as an event filter for the watched object.

QString	objectName () const

Q_WEAK_OVERLOAD void	setObjectName (const QString &name)
	Sets the object's name to name.

void	setObjectName (QAnyStringView name)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

QBindable< QString >	bindableObjectName ()

bool	isWidgetType () const
	Returns `true` if the object is a widget; otherwise returns `false`.

bool	isWindowType () const
	Returns `true` if the object is a window; otherwise returns `false`.

bool	isQuickItemType () const
	Returns `true` if the object is a QQuickItem; otherwise returns `false`.

bool	signalsBlocked () const noexcept
	Returns `true` if signals are blocked; otherwise returns `false`.

bool	blockSignals (bool b) noexcept
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it).

QThread *	thread () const
	Returns the thread in which the object lives.

void	moveToThread (QThread *thread)
	Changes the thread affinity for this object and its children.

int	startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)
	This is an overloaded function that will start a timer of type timerType and a timeout of interval milliseconds.

int	startTimer (std::chrono::milliseconds time, Qt::TimerType timerType=Qt::CoarseTimer)

void	killTimer (int id)
	Kills the timer with timer identifier, id.

template<typename T >
T	findChild (const QString &aName=QString(), Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object.

template<typename T >
QList< T >	findChildren (const QString &aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects.

template<typename T >
QList< T >	findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

const QObjectList &	children () const
	Returns a list of child objects.

void	setParent (QObject *parent)
	Makes the object a child of parent.

void	installEventFilter (QObject *filterObj)
	Installs an event filter filterObj on this object.

void	removeEventFilter (QObject *obj)
	Removes an event filter object obj from this object.

QMetaObject::Connection	connect (const QObject sender, const char signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const

bool	disconnect (const char signal=nullptr, const QObject receiver=nullptr, const char *member=nullptr) const

bool	disconnect (const QObject receiver, const char member=nullptr) const

void	dumpObjectTree () const
	Dumps a tree of children to the debug output.

void	dumpObjectInfo () const
	Dumps information about signal connections, etc.

bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value.

bool	setProperty (const char *name, QVariant &&value)

QVariant	property (const char *name) const
	Returns the value of the object's name property.

QList< QByteArray >	dynamicPropertyNames () const

QBindingStorage *	bindingStorage ()

const QBindingStorage *	bindingStorage () const

QObject *	parent () const
	Returns a pointer to the parent object.

bool	inherits (const char *classname) const
	Returns `true` if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns `false`.

Additional Inherited Members
Public Types inherited from QAbstractItemDelegate
enum	EndEditHint { NoHint , EditNextItem , EditPreviousItem , SubmitModelCache , RevertModelCache }
	This enum describes the different hints that the delegate can give to the model and view components to make editing data in a model a comfortable experience for the user. More...

Public Slots inherited from QObject
void	deleteLater ()
	\threadsafe

Signals inherited from QAbstractItemDelegate
void	commitData (QWidget *editor)
	This signal must be emitted when the editor widget has completed editing the data, and wants to write it back into the model.

void	closeEditor (QWidget *editor, QAbstractItemDelegate::EndEditHint hint=NoHint)
	This signal is emitted when the user has finished editing an item using the specified editor.

void	sizeHintChanged (const QModelIndex &)

Signals inherited from QObject
void	destroyed (QObject *=nullptr)
	This signal is emitted immediately before the object obj is destroyed, after any instances of QPointer have been notified, and cannot be blocked.

void	objectNameChanged (const QString &objectName, QPrivateSignal)
	This signal is emitted after the object's name has been changed.

Static Public Member Functions inherited from QObject
static QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)
	\threadsafe

static QMetaObject::Connection	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)

template<typename Func1 , typename Func2 >
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::ContextTypeForFunctor< Func2 >::ContextType context, Func2 &&slot, Qt::ConnectionType type=Qt::AutoConnection)

template<typename Func1 , typename Func2 >
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 &&slot)

static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)
	\threadsafe

static bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &member)

static bool	disconnect (const QMetaObject::Connection &)
	Disconnect a connection.

template<typename Func1 , typename Func2 >
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object receiver, Func2 slot)

template<typename Func1 >
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const QObject receiver, void **zero)

Protected Member Functions inherited from QStyledItemDelegate
virtual void	initStyleOption (QStyleOptionViewItem *option, const QModelIndex &index) const
	Initialize option with the values using the index index.

bool	eventFilter (QObject object, QEvent event) override
	Returns `true` if the given editor is a valid QWidget and the given event is handled; otherwise returns `false`.

bool	editorEvent (QEvent event, QAbstractItemModel model, const QStyleOptionViewItem &option, const QModelIndex &index) override
	\reimp

Protected Member Functions inherited from QAbstractItemDelegate
	QAbstractItemDelegate (QObjectPrivate &, QObject *parent=nullptr)

Protected Member Functions inherited from QObject
QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns \nullptr.

int	senderSignalIndex () const

int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal.

bool	isSignalConnected (const QMetaMethod &signal) const

virtual void	timerEvent (QTimerEvent *event)
	This event handler can be reimplemented in a subclass to receive timer events for the object.

virtual void	childEvent (QChildEvent *event)
	This event handler can be reimplemented in a subclass to receive child events.

virtual void	customEvent (QEvent *event)
	This event handler can be reimplemented in a subclass to receive custom events.

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	disconnectNotify (const QMetaMethod &signal)

	QObject (QObjectPrivate &dd, QObject *parent=nullptr)

Protected Attributes inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Properties inherited from QObject
QString	objectName
	the name of this object

Related Symbols inherited from QObject
template< class T > T	qobject_cast (const QObject *object)
	Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.

template< typename T > T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

template< typename T > QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()

	QObjectList
	\macro Q_CLASSINFO(Name, Value)

Detailed Description

This is a delegate that will paint the triangle.

Definition at line 148 of file qcolumnview_p.h.

Constructor & Destructor Documentation

◆ QColumnViewDelegate()

QColumnViewDelegate::QColumnViewDelegate ( QObject * parent = nullptr )

inlineexplicit

Definition at line 152 of file qcolumnview_p.h.

◆ ~QColumnViewDelegate()

QColumnViewDelegate::~QColumnViewDelegate ( )

inline

Definition at line 153 of file qcolumnview_p.h.

Member Function Documentation

◆ paint()

void QColumnViewDelegate::paint	(	QPainter *	painter,
		const QStyleOptionViewItem &	option,
		const QModelIndex &	index
	)		const

overridevirtual

This pure abstract function must be reimplemented if you want to provide custom rendering.

Use the painter and style option to render the item specified by the item index.

If you reimplement this you must also reimplement sizeHint().

Implements QAbstractItemDelegate.

The documentation for this class was generated from the following file:

qtbase/src/widgets/itemviews/qcolumnview_p.h