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

#include <qcolumnview_p.h>

Inheritance diagram for QColumnViewDelegate:

Public Functions
void	paint (QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
	Draws a delegate with a > if an object has children. More...

	QColumnViewDelegate (QObject *parent=0)

	~QColumnViewDelegate ()

Public Functions inherited from QItemDelegate
QWidget *	createEditor (QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const
	Returns the widget used to edit the item specified by index for editing. More...

bool	hasClipping () const

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

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

	QItemDelegate (QObject *parent=0)
	Constructs an item delegate with the given parent. More...

void	setClipping (bool clip)

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

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

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

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

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

	~QItemDelegate ()
	Destroys the item delegate. More...

Public Functions inherited from QAbstractItemDelegate
	QAbstractItemDelegate (QObject *parent=0)
	Creates a new abstract item delegate with the given parent. More...

virtual	~QAbstractItemDelegate ()
	Destroys the abstract item delegate. More...

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

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

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

bool	disconnect (const char signal=0, const QObject receiver=0, const char *member=0)

bool	disconnect (const QObject receiver, const char member=0)

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

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

QList< QByteArray >	dynamicPropertyNames () const
	Returns the names of all properties that were dynamically added to the object using setProperty(). More...

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

template<typename T >
T	findChild (const QString &aName=QString()) const
	Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...

template<typename T >
QList< T >	findChildren (const QString &aName=QString()) 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. More...

template<typename T >
QList< T >	findChildren (const QRegExp &re) const

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. More...

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

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

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

virtual const QMetaObject *	metaObject () const
	Returns a pointer to the meta-object of this object. More...

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

QString	objectName () const

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

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

Q_INVOKABLE	QObject (QObject *parent=0)
	Constructs an object with parent object parent. More...

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

void	setObjectName (const QString &name)

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

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

void	setUserData (uint id, QObjectUserData *data)

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

int	startTimer (int interval)
	Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...

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

QObjectUserData *	userData (uint id) const

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

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 QAbstractItemDelegate
bool	helpEvent (QHelpEvent event, QAbstractItemView view, const QStyleOptionViewItem &option, const QModelIndex &index)
	Whenever a help event occurs, this function is called with the event view option and the index that corresponds to the item where the event occurs. More...

Public Slots inherited from QObject
void	deleteLater ()
	Schedules this object for deletion. More...

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

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. More...

void	sizeHintChanged (const QModelIndex &)
	This signal must be emitted when the sizeHint() of index changed. More...

Signals inherited from QObject
void	destroyed (QObject *=0)
	This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...

Static Public Functions inherited from QAbstractItemDelegate
static QString	elidedText (const QFontMetrics &fontMetrics, int width, Qt::TextElideMode mode, const QString &text)
	Use QFontMetrics::elidedText() instead. More...

Static Public Functions inherited from QObject
static bool	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)
	Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...

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

static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)
	Disconnects signal in object sender from method in object receiver. More...

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

static uint	registerUserData ()

static QString	tr (const char sourceText, const char comment=0, int n=-1)

static QString	trUtf8 (const char sourceText, const char comment=0, int n=-1)

Static Public Variables inherited from QObject
static const QMetaObject	staticMetaObject
	This variable stores the meta-object for the class. More...

Protected Functions inherited from QItemDelegate
QRect	check (const QStyleOptionViewItem &option, const QRect &bounding, const QVariant &variant) const
	Note that on Mac, if /usr/include/AssertMacros. More...

QPixmap	decoration (const QStyleOptionViewItem &option, const QVariant &variant) const
	Returns the pixmap used to decorate the root of the item view. More...

void	doLayout (const QStyleOptionViewItem &option, QRect checkRect, QRect iconRect, QRect *textRect, bool hint) const

void	drawBackground (QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
	Renders the item background for the given index, using the given painter and style option. More...

virtual void	drawCheck (QPainter *painter, const QStyleOptionViewItem &option, const QRect &rect, Qt::CheckState state) const
	Renders a check indicator within the rectangle specified by rect, using the given painter and style option, using the given state. More...

virtual void	drawDecoration (QPainter *painter, const QStyleOptionViewItem &option, const QRect &rect, const QPixmap &pixmap) const
	Renders the decoration pixmap within the rectangle specified by rect using the given painter and style option. More...

virtual void	drawDisplay (QPainter *painter, const QStyleOptionViewItem &option, const QRect &rect, const QString &text) const
	Renders the item view text within the rectangle specified by rect using the given painter and style option. More...

virtual void	drawFocus (QPainter *painter, const QStyleOptionViewItem &option, const QRect &rect) const
	Renders the region within the rectangle specified by rect, indicating that it has the focus, using the given painter and style option. More...

bool	editorEvent (QEvent event, QAbstractItemModel model, const QStyleOptionViewItem &option, const QModelIndex &index)
	Reimplemented Function More...

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

QRect	rect (const QStyleOptionViewItem &option, const QModelIndex &index, int role) const

QPixmap *	selected (const QPixmap &pixmap, const QPalette &palette, bool enabled) const
	Returns the selected version of the given pixmap using the given palette. More...

QStyleOptionViewItem	setOptions (const QModelIndex &index, const QStyleOptionViewItem &option) const

QRect	textRectangle (QPainter *painter, const QRect &rect, const QFont &font, const QString &text) const

Protected Functions inherited from QAbstractItemDelegate
	QAbstractItemDelegate (QObjectPrivate &, QObject *parent=0)
	Creates a new abstract item delegate with the given parent. More...

Protected Functions inherited from QObject
virtual void	childEvent (QChildEvent *)
	This event handler can be reimplemented in a subclass to receive child events. More...

virtual void	connectNotify (const char *signal)
	This virtual function is called when something has been connected to signal in this object. More...

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

virtual void	disconnectNotify (const char *signal)
	This virtual function is called when something has been disconnected from signal in this object. More...

	QObject (QObjectPrivate &dd, QObject *parent=0)

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

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 0. More...

int	senderSignalIndex () const

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

Protected Variables inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Static Protected Variables inherited from QObject
static const QMetaObject	staticQtMetaObject

Related Functions inherited from QObject
T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

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

QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QRegExp &regExp)()

T *	qobject_cast (QObject *object)

	QObjectList

void *	qt_find_obj_child (QObject parent, const char type, const QString &name)
	Returns a pointer to the object named name that inherits type and with a given parent. More...

Detailed Description

This is a delegate that will paint the triangle.

Definition at line 173 of file qcolumnview_p.h.

Constructors and Destructors

◆ QColumnViewDelegate()

QColumnViewDelegate::QColumnViewDelegate ( QObject * parent = 0 )

inlineexplicit

Definition at line 177 of file qcolumnview_p.h.

177 : QItemDelegate(parent) {}

QItemDelegate::QItemDelegate

QItemDelegate(QObject *parent=0)

Constructs an item delegate with the given parent.

Definition: qitemdelegate.cpp:319

◆ ~QColumnViewDelegate()

QColumnViewDelegate::~QColumnViewDelegate ( )

inline

Definition at line 178 of file qcolumnview_p.h.

178 {}

Functions

◆ paint()

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

virtual

Draws a delegate with a > if an object has children.

Warning: This function is not part of the public interface.

See also: {Model/View Programming}, QItemDelegate

Implements QAbstractItemDelegate.

Definition at line 1149 of file qcolumnview.cpp.

 {
     drawBackground(painter, option, index );
 
     bool reverse = (option.direction == Qt::RightToLeft);
     int width = ((option.rect.height() * 2) / 3);
     // Modify the options to give us room to add an arrow
     QStyleOptionViewItemV4 opt = option;
     if (reverse)
         opt.rect.adjust(width,0,0,0);
     else
         opt.rect.adjust(0,0,-width,0);
 
     if (!(index.model()->flags(index) & Qt::ItemIsEnabled)) {
         opt.showDecorationSelected = true;
         opt.state |= QStyle::State_Selected;
     }
 
     QItemDelegate::paint(painter, opt, index);
 
     if (reverse)
         opt.rect = QRect(option.rect.x(), option.rect.y(), width, option.rect.height());
     else
         opt.rect = QRect(option.rect.x() + option.rect.width() - width, option.rect.y(),
                          width, option.rect.height());
 
     // Draw >
     if (index.model()->hasChildren(index)) {
         const QWidget *view = opt.widget;
         QStyle *style = view ? view->style() : QApplication::style();
         style->drawPrimitive(QStyle::PE_IndicatorColumnViewArrow, &opt, painter, view);
     }
 }

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

/src/gui/itemviews/qcolumnview_p.h
/src/gui/itemviews/qcolumnview.cpp