The QTreeView class provides a default model/view implementation of a tree view. More...

#include <qtreeview.h>

Inheritance diagram for QTreeView:

Collaboration diagram for QTreeView:

Public Slots
void	hideColumn (int column)
	Hides the column given.

void	showColumn (int column)
	Shows the given column in the tree view.

void	expand (const QModelIndex &index)
	Expands the model item specified by the index.

void	collapse (const QModelIndex &index)
	Collapses the model item specified by the index.

void	resizeColumnToContents (int column)
	Resizes the column given to the size of its contents.

void	sortByColumn (int column, Qt::SortOrder order)

void	expandAll ()

void	expandRecursively (const QModelIndex &index, int depth=-1)

void	collapseAll ()

void	expandToDepth (int depth)

Public Slots inherited from QAbstractItemView
virtual void	reset ()
	Reset the internal state of the view.

virtual void	setRootIndex (const QModelIndex &index)
	Sets the root item to the item at the given index.

virtual void	doItemsLayout ()

virtual void	selectAll ()
	Selects all items in the view.

void	edit (const QModelIndex &index)
	Starts editing the item corresponding to the given index if it is editable.

void	clearSelection ()
	Deselects all selected items.

void	setCurrentIndex (const QModelIndex &index)
	Sets the current item to be the item at index.

void	scrollToTop ()

void	scrollToBottom ()

void	update (const QModelIndex &index)

Signals
void	expanded (const QModelIndex &index)
	This signal is emitted when the item specified by index is expanded.

void	collapsed (const QModelIndex &index)
	This signal is emitted when the item specified by index is collapsed.

Signals inherited from QAbstractItemView
void	pressed (const QModelIndex &index)
	This signal is emitted when a mouse button is pressed.

void	clicked (const QModelIndex &index)
	This signal is emitted when a mouse button is left-clicked.

void	doubleClicked (const QModelIndex &index)
	This signal is emitted when a mouse button is double-clicked.

void	activated (const QModelIndex &index)
	This signal is emitted when the item specified by index is activated by the user.

void	entered (const QModelIndex &index)
	This signal is emitted when the mouse cursor enters the item specified by index.

void	viewportEntered ()
	This signal is emitted when the mouse cursor enters the viewport.

void	iconSizeChanged (const QSize &size)

Public Member Functions
	QTreeView (QWidget *parent=nullptr)
	Constructs a tree view with a parent to represent a model's data.

	~QTreeView ()
	Destroys the tree view.

void	setModel (QAbstractItemModel *model) override
	\reimp

void	setRootIndex (const QModelIndex &index) override
	\reimp

void	setSelectionModel (QItemSelectionModel *selectionModel) override
	\reimp

QHeaderView *	header () const
	Returns the header for the tree view.

void	setHeader (QHeaderView *header)
	Sets the header for the tree view, to the given header.

int	autoExpandDelay () const

void	setAutoExpandDelay (int delay)

int	indentation () const

void	setIndentation (int i)

void	resetIndentation ()

bool	rootIsDecorated () const

void	setRootIsDecorated (bool show)

bool	uniformRowHeights () const

void	setUniformRowHeights (bool uniform)

bool	itemsExpandable () const

void	setItemsExpandable (bool enable)

bool	expandsOnDoubleClick () const

void	setExpandsOnDoubleClick (bool enable)

int	columnViewportPosition (int column) const
	Returns the horizontal position of the column in the viewport.

int	columnWidth (int column) const
	Returns the width of the column.

void	setColumnWidth (int column, int width)

int	columnAt (int x) const
	Returns the column in the tree view whose header covers the x coordinate given.

bool	isColumnHidden (int column) const
	Returns `true` if the column is hidden; otherwise returns `false`.

void	setColumnHidden (int column, bool hide)
	If hide is true the column is hidden, otherwise the column is shown.

bool	isHeaderHidden () const

void	setHeaderHidden (bool hide)

bool	isRowHidden (int row, const QModelIndex &parent) const
	Returns `true` if the item in the given row of the parent is hidden; otherwise returns `false`.

void	setRowHidden (int row, const QModelIndex &parent, bool hide)
	If hide is true the row with the given parent is hidden, otherwise the row is shown.

bool	isFirstColumnSpanned (int row, const QModelIndex &parent) const

void	setFirstColumnSpanned (int row, const QModelIndex &parent, bool span)

bool	isExpanded (const QModelIndex &index) const
	Returns `true` if the model item index is expanded; otherwise returns false.

void	setExpanded (const QModelIndex &index, bool expand)
	Sets the item referred to by index to either collapse or expanded, depending on the value of expanded.

void	setSortingEnabled (bool enable)

bool	isSortingEnabled () const

void	setAnimated (bool enable)

bool	isAnimated () const

void	setAllColumnsShowFocus (bool enable)

bool	allColumnsShowFocus () const

void	setWordWrap (bool on)

bool	wordWrap () const

void	setTreePosition (int logicalIndex)

int	treePosition () const

void	keyboardSearch (const QString &search) override
	\reimp

QRect	visualRect (const QModelIndex &index) const override
	Returns the rectangle on the viewport occupied by the item at index.

void	scrollTo (const QModelIndex &index, ScrollHint hint=EnsureVisible) override
	Scroll the contents of the tree view until the given model item index is visible.

QModelIndex	indexAt (const QPoint &p) const override
	\reimp

QModelIndex	indexAbove (const QModelIndex &index) const
	Returns the model index of the item above index.

QModelIndex	indexBelow (const QModelIndex &index) const
	Returns the model index of the item below index.

void	doItemsLayout () override

void	reset () override
	\reimp

void	dataChanged (const QModelIndex &topLeft, const QModelIndex &bottomRight, const QList< int > &roles=QList< int >()) override
	\reimp

void	selectAll () override
	\reimp

Public Member Functions inherited from QAbstractItemView
	QAbstractItemView (QWidget *parent=nullptr)
	Constructs an abstract item view with the given parent.

	~QAbstractItemView ()
	Destroys the view.

virtual void	setModel (QAbstractItemModel *model)
	Sets the model for the view to present.

QAbstractItemModel *	model () const
	Returns the model that this view is presenting.

virtual void	setSelectionModel (QItemSelectionModel *selectionModel)
	Sets the current selection model to the given selectionModel.

QItemSelectionModel *	selectionModel () const
	Returns the current selection model.

void	setItemDelegate (QAbstractItemDelegate *delegate)
	Sets the item delegate for this view and its model to delegate.

QAbstractItemDelegate *	itemDelegate () const
	Returns the item delegate used by this view and model.

void	setSelectionMode (QAbstractItemView::SelectionMode mode)

QAbstractItemView::SelectionMode	selectionMode () const

void	setSelectionBehavior (QAbstractItemView::SelectionBehavior behavior)

QAbstractItemView::SelectionBehavior	selectionBehavior () const

QModelIndex	currentIndex () const
	Returns the model index of the current item.

QModelIndex	rootIndex () const
	Returns the model index of the model's root item.

void	setEditTriggers (EditTriggers triggers)

EditTriggers	editTriggers () const

void	setVerticalScrollMode (ScrollMode mode)

ScrollMode	verticalScrollMode () const

void	resetVerticalScrollMode ()

void	setHorizontalScrollMode (ScrollMode mode)

ScrollMode	horizontalScrollMode () const

void	resetHorizontalScrollMode ()

void	setAutoScroll (bool enable)

bool	hasAutoScroll () const

void	setAutoScrollMargin (int margin)

int	autoScrollMargin () const

void	setTabKeyNavigation (bool enable)

bool	tabKeyNavigation () const

void	setAlternatingRowColors (bool enable)

bool	alternatingRowColors () const

void	setIconSize (const QSize &size)

QSize	iconSize () const

void	setTextElideMode (Qt::TextElideMode mode)

Qt::TextElideMode	textElideMode () const

virtual void	keyboardSearch (const QString &search)
	Moves to and selects the item best matching the string search.

virtual QRect	visualRect (const QModelIndex &index) const =0
	Returns the rectangle on the viewport occupied by the item at index.

virtual void	scrollTo (const QModelIndex &index, ScrollHint hint=EnsureVisible)=0
	Scrolls the view if necessary to ensure that the item at index is visible.

virtual QModelIndex	indexAt (const QPoint &point) const =0
	Returns the model index of the item at the viewport coordinates point.

QSize	sizeHintForIndex (const QModelIndex &index) const
	Returns the size hint for the item with the specified index or an invalid size for invalid indexes.

virtual int	sizeHintForRow (int row) const
	Returns the height size hint for the specified row or -1 if there is no model.

virtual int	sizeHintForColumn (int column) const
	Returns the width size hint for the specified column or -1 if there is no model.

void	openPersistentEditor (const QModelIndex &index)
	Opens a persistent editor on the item at the given index.

void	closePersistentEditor (const QModelIndex &index)
	Closes the persistent editor for the item at the given index.

bool	isPersistentEditorOpen (const QModelIndex &index) const

void	setIndexWidget (const QModelIndex &index, QWidget *widget)

QWidget *	indexWidget (const QModelIndex &index) const

void	setItemDelegateForRow (int row, QAbstractItemDelegate *delegate)

QAbstractItemDelegate *	itemDelegateForRow (int row) const

void	setItemDelegateForColumn (int column, QAbstractItemDelegate *delegate)

QAbstractItemDelegate *	itemDelegateForColumn (int column) const

virtual QAbstractItemDelegate *	itemDelegateForIndex (const QModelIndex &index) const

virtual QVariant	inputMethodQuery (Qt::InputMethodQuery query) const override
	\reimp

Protected Slots
void	columnResized (int column, int oldSize, int newSize)
	This function is called whenever {column}'s size is changed in the header.

void	columnCountChanged (int oldCount, int newCount)
	Informs the tree view that the number of columns in the tree view has changed from oldCount to newCount.

void	columnMoved ()
	This slot is called whenever a column has been moved.

void	reexpand ()

void	rowsRemoved (const QModelIndex &parent, int first, int last)

void	verticalScrollbarValueChanged (int value) override

Protected Slots inherited from QAbstractItemView
virtual void	dataChanged (const QModelIndex &topLeft, const QModelIndex &bottomRight, const QList< int > &roles=QList< int >())
	This slot is called when items with the given roles are changed in the model.

virtual void	rowsInserted (const QModelIndex &parent, int start, int end)
	This slot is called when rows are inserted.

virtual void	rowsAboutToBeRemoved (const QModelIndex &parent, int start, int end)
	This slot is called when rows are about to be removed.

virtual void	selectionChanged (const QItemSelection &selected, const QItemSelection &deselected)
	This slot is called when the selection is changed.

virtual void	currentChanged (const QModelIndex &current, const QModelIndex &previous)
	This slot is called when a new item becomes the current item.

virtual void	updateEditorData ()

virtual void	updateEditorGeometries ()

virtual void	updateGeometries ()

virtual void	verticalScrollbarAction (int action)

virtual void	horizontalScrollbarAction (int action)

virtual void	verticalScrollbarValueChanged (int value)

virtual void	horizontalScrollbarValueChanged (int value)

virtual void	closeEditor (QWidget *editor, QAbstractItemDelegate::EndEditHint hint)
	Closes the given editor, and releases it.

virtual void	commitData (QWidget *editor)
	Commit the data in the editor to the model.

virtual void	editorDestroyed (QObject *editor)
	This function is called when the given editor has been destroyed.

Protected Member Functions
	QTreeView (QTreeViewPrivate &dd, QWidget *parent=nullptr)

void	scrollContentsBy (int dx, int dy) override
	Scrolls the contents of the tree view by (dx, dy).

void	rowsInserted (const QModelIndex &parent, int start, int end) override
	Informs the view that the rows from the start row to the end row inclusive have been inserted into the parent model item.

void	rowsAboutToBeRemoved (const QModelIndex &parent, int start, int end) override
	Informs the view that the rows from the start row to the end row inclusive are about to removed from the given parent model item.

QModelIndex	moveCursor (CursorAction cursorAction, Qt::KeyboardModifiers modifiers) override
	Move the cursor in the way described by cursorAction, using the information provided by the button modifiers.

int	horizontalOffset () const override
	Returns the horizontal offset of the items in the treeview.

int	verticalOffset () const override
	Returns the vertical offset of the items in the tree view.

void	setSelection (const QRect &rect, QItemSelectionModel::SelectionFlags command) override
	Applies the selection command to the items in or touched by the rectangle, rect.

QRegion	visualRegionForSelection (const QItemSelection &selection) const override
	Returns the rectangle from the viewport of the items in the given selection.

QModelIndexList	selectedIndexes () const override
	\reimp

void	changeEvent (QEvent *event) override
	\reimp

void	timerEvent (QTimerEvent *event) override
	\reimp

void	paintEvent (QPaintEvent *event) override
	\reimp

void	drawTree (QPainter *painter, const QRegion &region) const

virtual void	drawRow (QPainter *painter, const QStyleOptionViewItem &options, const QModelIndex &index) const
	Draws the row in the tree view that contains the model item index, using the painter given.

virtual void	drawBranches (QPainter *painter, const QRect &rect, const QModelIndex &index) const
	Draws the branches in the tree view on the same row as the model item index, using the painter given.

void	mousePressEvent (QMouseEvent *event) override
	\reimp

void	mouseReleaseEvent (QMouseEvent *event) override
	\reimp

void	mouseDoubleClickEvent (QMouseEvent *event) override
	\reimp

void	mouseMoveEvent (QMouseEvent *event) override
	\reimp

void	keyPressEvent (QKeyEvent *event) override
	\reimp

bool	viewportEvent (QEvent *event) override
	\reimp

void	updateGeometries () override
	\reimp

QSize	viewportSizeHint () const override
	\reimp

int	sizeHintForColumn (int column) const override
	Returns the size hint for the column's width or -1 if there is no model.

int	indexRowSizeHint (const QModelIndex &index) const
	Returns the size hint for the row indicated by index.

int	rowHeight (const QModelIndex &index) const

void	horizontalScrollbarAction (int action) override

bool	isIndexHidden (const QModelIndex &index) const override
	\reimp

void	selectionChanged (const QItemSelection &selected, const QItemSelection &deselected) override
	\reimp

void	currentChanged (const QModelIndex &current, const QModelIndex &previous) override
	\reimp

Protected Member Functions inherited from QAbstractItemView
	QAbstractItemView (QAbstractItemViewPrivate &, QWidget *parent=nullptr)

virtual QModelIndex	moveCursor (CursorAction cursorAction, Qt::KeyboardModifiers modifiers)=0
	Returns a QModelIndex object pointing to the next object in the view, based on the given cursorAction and keyboard modifiers specified by modifiers.

virtual int	horizontalOffset () const =0
	Returns the horizontal offset of the view.

virtual int	verticalOffset () const =0
	Returns the vertical offset of the view.

virtual bool	isIndexHidden (const QModelIndex &index) const =0
	Returns `true` if the item referred to by the given index is hidden in the view, otherwise returns `false`.

virtual void	setSelection (const QRect &rect, QItemSelectionModel::SelectionFlags command)=0
	Applies the selection flags to the items in or touched by the rectangle, rect.

virtual QRegion	visualRegionForSelection (const QItemSelection &selection) const =0
	Returns the region from the viewport of the items in the given selection.

virtual QModelIndexList	selectedIndexes () const
	This convenience function returns a list of all selected and non-hidden item indexes in the view.

virtual bool	edit (const QModelIndex &index, EditTrigger trigger, QEvent *event)
	Starts editing the item at index, creating an editor if necessary, and returns `true` if the view's \l{State} is now EditingState; otherwise returns `false`.

virtual QItemSelectionModel::SelectionFlags	selectionCommand (const QModelIndex &index, const QEvent *event=nullptr) const
	Returns the SelectionFlags to be used when updating a selection model for the specified index.

virtual void	initViewItemOption (QStyleOptionViewItem *option) const

State	state () const
	Returns the item view's state.

void	setState (State state)
	Sets the item view's state to the given state.

void	scheduleDelayedItemsLayout ()
	Schedules a layout of the items in the view to be executed when the event processing starts.

void	executeDelayedItemsLayout ()
	Executes the scheduled layouts without waiting for the event processing to begin.

void	setDirtyRegion (const QRegion &region)

void	scrollDirtyRegion (int dx, int dy)
	Prepares the view for scrolling by ({dx},{dy}) pixels by moving the dirty regions in the opposite direction.

QPoint	dirtyRegionOffset () const
	Returns the offset of the dirty regions in the view.

void	startAutoScroll ()

void	stopAutoScroll ()

void	doAutoScroll ()

bool	focusNextPrevChild (bool next) override
	\reimp

bool	event (QEvent *event) override
	\reimp

bool	viewportEvent (QEvent *event) override
	This function is used to handle tool tips, and What's This? mode, if the given event is a QEvent::ToolTip,or a QEvent::WhatsThis.

void	mousePressEvent (QMouseEvent *event) override
	This function is called with the given event when a mouse button is pressed while the cursor is inside the widget.

void	mouseMoveEvent (QMouseEvent *event) override
	This function is called with the given event when a mouse move event is sent to the widget.

void	mouseReleaseEvent (QMouseEvent *event) override
	This function is called with the given event when a mouse button is released, after a mouse press event on the widget.

void	mouseDoubleClickEvent (QMouseEvent *event) override
	This function is called with the given event when a mouse button is double clicked inside the widget.

void	focusInEvent (QFocusEvent *event) override
	This function is called with the given event when the widget obtains the focus.

void	focusOutEvent (QFocusEvent *event) override
	This function is called with the given event when the widget loses the focus.

void	keyPressEvent (QKeyEvent *event) override
	This function is called with the given event when a key event is sent to the widget.

void	resizeEvent (QResizeEvent *event) override
	This function is called with the given event when a resize event is sent to the widget.

void	timerEvent (QTimerEvent *event) override
	This function is called with the given event when a timer event is sent to the widget.

void	inputMethodEvent (QInputMethodEvent *event) override
	\reimp

bool	eventFilter (QObject object, QEvent event) override
	\reimp

QSize	viewportSizeHint () const override

Properties
int	autoExpandDelay
	The delay time before items in a tree are opened during a drag and drop operation.

int	indentation
	indentation of the items in the tree view.

bool	rootIsDecorated
	whether to show controls for expanding and collapsing top-level items

bool	uniformRowHeights
	whether all items in the treeview have the same height

bool	itemsExpandable
	whether the items are expandable by the user.

bool	sortingEnabled
	whether sorting is enabled

bool	animated
	whether animations are enabled

bool	allColumnsShowFocus
	whether items should show keyboard focus using all columns

bool	wordWrap
	the item text word-wrapping policy

bool	headerHidden
	whether the header is shown or not.

bool	expandsOnDoubleClick
	whether the items can be expanded by double-clicking.

Properties inherited from QAbstractItemView
bool	autoScroll
	whether autoscrolling in drag move events is enabled

int	autoScrollMargin
	the size of the area when auto scrolling is triggered

EditTriggers	editTriggers
	which actions will initiate item editing

bool	tabKeyNavigation
	whether item navigation with tab and backtab is enabled.

bool	alternatingRowColors
	whether to draw the background using alternating colors

SelectionMode	selectionMode
	which selection mode the view operates in

SelectionBehavior	selectionBehavior
	which selection behavior the view uses

QSize	iconSize
	the size of items' icons

Qt::TextElideMode	textElideMode
	the position of the "..." in elided text.

ScrollMode	verticalScrollMode
	how the view scrolls its contents in the vertical direction

ScrollMode	horizontalScrollMode
	how the view scrolls its contents in the horizontal direction

Friends
class	::tst_QTreeView

class	QAccessibleTable

class	QAccessibleTree

class	QAccessibleTableCell

Additional Inherited Members
Public Types inherited from QAbstractItemView
enum	SelectionMode { NoSelection , SingleSelection , MultiSelection , ExtendedSelection , ContiguousSelection }
	This enum indicates how the view responds to user selections: More...

enum	SelectionBehavior { SelectItems , SelectRows , SelectColumns }
	\value SelectItems Selecting single items. More...

enum	ScrollHint { EnsureVisible , PositionAtTop , PositionAtBottom , PositionAtCenter }
	\value EnsureVisible Scroll to ensure that the item is visible. More...

enum	EditTrigger { NoEditTriggers = 0 , CurrentChanged = 1 , DoubleClicked = 2 , SelectedClicked = 4 , EditKeyPressed = 8 , AnyKeyPressed = 16 , AllEditTriggers = 31 }
	This enum describes actions which will initiate item editing. More...

enum	ScrollMode { ScrollPerItem , ScrollPerPixel }

Protected Types inherited from QAbstractItemView
enum	CursorAction { MoveUp , MoveDown , MoveLeft , MoveRight , MoveHome , MoveEnd , MovePageUp , MovePageDown , MoveNext , MovePrevious }
	This enum describes the different ways to navigate between items,. More...

enum	State { NoState , DraggingState , DragSelectingState , EditingState , ExpandingState , CollapsingState , AnimatingState }
	Describes the different states the view can be in. More...

Detailed Description

The QTreeView class provides a default model/view implementation of a tree view.

\inmodule QtWidgets

A QTreeView implements a tree representation of items from a model. This class is used to provide standard hierarchical lists that were previously provided by the QListView class, but using the more flexible approach provided by Qt's model/view architecture.

The QTreeView class is one of the \l{Model/View Classes} and is part of Qt's \l{Model/View Programming}{model/view framework}.

QTreeView implements the interfaces defined by the QAbstractItemView class to allow it to display data provided by models derived from the QAbstractItemModel class.

It is simple to construct a tree view displaying data from a model. In the following example, the contents of a directory are supplied by a QFileSystemModel and displayed as a tree:

    QFileSystemModel *model = new QFileSystemModel;
    model->setRootPath(QDir::currentPath());
    QTreeView *tree = new QTreeView(splitter);

tree->setModel(model);

QTreeView::setModel

void setModel(QAbstractItemModel *model) override

\reimp

Definition qtreeview.cpp:177

The model/view architecture ensures that the contents of the tree view are updated as the model changes.

Items that have children can be in an expanded (children are visible) or collapsed (children are hidden) state. When this state changes a collapsed() or expanded() signal is emitted with the model index of the relevant item.

The amount of indentation used to indicate levels of hierarchy is controlled by the \l indentation property.

Headers in tree views are constructed using the QHeaderView class and can be hidden using {header()->hide()}. Note that each header is configured with its \l{QHeaderView::}{stretchLastSection} property set to true, ensuring that the view does not waste any of the space assigned to it for its header. If this value is set to true, this property will override the resize mode set on the last section in the header.

By default, all columns in a tree view are movable except the first. To disable movement of these columns, use QHeaderView's \l {QHeaderView::}{setSectionsMovable()} function. For more information about rearranging sections, see \l {Moving Header Sections}.

Definition at line 19 of file qtreeview.h.

Constructor & Destructor Documentation

◆ QTreeView() [1/2]

QTreeView::QTreeView ( QWidget * parent = nullptr )

explicit

Constructs a tree view with a parent to represent a model's data.

Use setModel() to set the model.

See also: QAbstractItemModel

Definition at line 150 of file qtreeview.cpp.

References d.

◆ ~QTreeView()

QTreeView::~QTreeView ( )

Destroys the tree view.

Definition at line 170 of file qtreeview.cpp.

◆ QTreeView() [2/2]

QTreeView::QTreeView	(	QTreeViewPrivate &	dd,
		QWidget *	parent = `nullptr`
	)

protected

Definition at line 160 of file qtreeview.cpp.

References d.

Member Function Documentation

◆ allColumnsShowFocus()

bool QTreeView::allColumnsShowFocus ( ) const

Definition at line 902 of file qtreeview.cpp.

References d.

◆ autoExpandDelay()

int QTreeView::autoExpandDelay ( ) const

Definition at line 315 of file qtreeview.cpp.

References d.

◆ changeEvent()

void QTreeView::changeEvent ( QEvent * event )

overrideprotected

\reimp

Definition at line 1206 of file qtreeview.cpp.

References d, and QEvent::StyleChange.

◆ collapse

void QTreeView::collapse ( const QModelIndex & index )

slot

Collapses the model item specified by the index.

See also: collapsed()

Definition at line 760 of file qtreeview.cpp.

References collapsed(), d, emit, i, updateGeometries(), and viewport().

Referenced by QTreeWidget::collapseItem(), keyPressEvent(), and setExpanded().

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◆ collapseAll

void QTreeView::collapseAll ( )

slot

Since: 4.2

Collapses all expanded items.

See also: expandAll(), expand(), collapse(), setExpanded()

Definition at line 2736 of file qtreeview.cpp.

References collapsed(), QSet< T >::constBegin(), QSet< T >::constEnd(), d, doItemsLayout(), emit, QPersistentModelIndex::flags(), QMetaMethod::fromSignal(), i, QPersistentModelIndex::isValid(), and Qt::ItemNeverHasChildren.

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◆ collapsed

void QTreeView::collapsed ( const QModelIndex & index )

signal

This signal is emitted when the item specified by index is collapsed.

Referenced by QTreeWidget::QTreeWidget(), collapse(), collapseAll(), and expandToDepth().

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◆ columnAt()

int QTreeView::columnAt ( int x ) const

Returns the column in the tree view whose header covers the x coordinate given.

Definition at line 500 of file qtreeview.cpp.

References d.

◆ columnCountChanged

void QTreeView::columnCountChanged	(	int	oldCount,
		int	newCount
	)

protectedslot

Informs the tree view that the number of columns in the tree view has changed from oldCount to newCount.

Definition at line 2563 of file qtreeview.cpp.

References d, isVisible(), updateGeometries(), and viewport().

Referenced by setHeader().

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◆ columnMoved

void QTreeView::columnMoved ( )

protectedslot

This slot is called whenever a column has been moved.

Definition at line 2480 of file qtreeview.cpp.

References d, and QAbstractItemView::updateEditorGeometries().

Referenced by setHeader().

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◆ columnResized

void QTreeView::columnResized	(	int	column,
		int	oldSize,
		int	newSize
	)

protectedslot

This function is called whenever {column}'s size is changed in the header.

oldSize and newSize give the previous size and the new size in pixels.

See also: setColumnWidth()

Definition at line 2812 of file qtreeview.cpp.

References d.

Referenced by setHeader().

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◆ columnViewportPosition()

int QTreeView::columnViewportPosition ( int column ) const

Returns the horizontal position of the column in the viewport.

Definition at line 466 of file qtreeview.cpp.

References d.

Referenced by drawRow(), scrollTo(), timerEvent(), visualRect(), and visualRegionForSelection().

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◆ columnWidth()

int QTreeView::columnWidth ( int column ) const

Returns the width of the column.

See also: resizeColumnToContents(), setColumnWidth()

Definition at line 477 of file qtreeview.cpp.

References d.

Referenced by scrollTo(), timerEvent(), visualRect(), and visualRegionForSelection().

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◆ currentChanged()

void QTreeView::currentChanged	(	const QModelIndex &	current,
		const QModelIndex &	previous
	)

overrideprotectedvirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 3999 of file qtreeview.cpp.

References allColumnsShowFocus, QAbstractItemView::currentChanged(), d, QModelIndex::isValid(), QRect::setWidth(), QRect::setX(), viewport(), and visualRect().

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◆ dataChanged()

void QTreeView::dataChanged	(	const QModelIndex &	topLeft,
		const QModelIndex &	bottomRight,
		const QList< int > &	roles = `QList<int>()`
	)

overridevirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 640 of file qtreeview.cpp.

References QModelIndex::column(), d, QAbstractItemView::dataChanged(), i, indexRowSizeHint(), and QModelIndex::row().

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◆ doItemsLayout()

void QTreeView::doItemsLayout ( )

overridevirtual

Lays out the items in the tree view.

Reimplemented from QAbstractItemView.

Definition at line 2090 of file qtreeview.cpp.

References d, QAbstractItemView::doItemsLayout(), it, and parent.

Referenced by collapseAll(), hideColumn(), and showColumn().

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◆ drawBranches()

void QTreeView::drawBranches	(	QPainter *	painter,
		const QRect &	rect,
		const QModelIndex &	index
	)		const

protectedvirtual

Draws the branches in the tree view on the same row as the model item index, using the painter given.

The branches are drawn in the rectangle specified by rect.

Definition at line 1815 of file qtreeview.cpp.

References QPainter::brushOrigin(), d, expanded(), QTreeViewItem::expanded, QStyleOptionButton::features, QTreeViewItem::hasChildren, QTreeViewItem::hasMoreSiblings, QAbstractItemView::initViewItemOption(), item, QTreeViewItem::level, opt, painter, QModelIndex::parent(), parent, QStyle::PE_IndicatorBranch, rect, QStyleOption::rect, QModelIndex::row(), QAbstractItemView::ScrollPerPixel, QAbstractItemView::selectionBehavior, QAbstractItemView::SelectRows, QPainter::setBrushOrigin(), QStyleOption::state, QStyle::State_Active, QStyle::State_Children, QStyle::State_Enabled, QStyle::State_Item, QStyle::State_MouseOver, QStyle::State_None, QStyle::State_Open, QStyle::State_Selected, QStyle::State_Sibling, QTreeViewItem::total, verticalOffset(), and QAbstractItemView::verticalScrollMode.

Referenced by drawRow().

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◆ drawRow()

void QTreeView::drawRow	(	QPainter *	painter,
		const QStyleOptionViewItem &	option,
		const QModelIndex &	index
	)		const

protectedvirtual

Draws the row in the tree view that contains the model item index, using the painter given.

The option controls how the item is displayed.

See also: setAlternatingRowColors()

Definition at line 1608 of file qtreeview.cpp.

References QPalette::Active, allColumnsShowFocus, ancestorOf(), QList< T >::at(), columnViewportPosition(), QHeaderView::count(), QAbstractItemView::currentIndex(), d, QPalette::Disabled, drawBranches(), QStyleOptionButton::features, QApplication::focusWidget(), header(), QPalette::Highlight, i, QPalette::Inactive, QAbstractItemView::indexWidget(), QModelIndex::isValid(), QAbstractItemView::itemDelegateForIndex(), Qt::ItemIsEnabled, QHeaderView::length(), QHeaderView::logicalIndex(), QPalette::Normal, o, QHeaderView::offset(), opt, QAbstractItemDelegate::paint(), painter, QStyleOption::palette, QModelIndex::parent(), parent, QStyle::PE_FrameFocusRect, QStyle::PE_PanelItemViewRow, position(), QStyleOption::rect, QPainter::restore(), QModelIndex::row(), QPainter::save(), QHeaderView::sectionPosition(), QHeaderView::sectionSize(), QHeaderView::sectionsMoved(), QAbstractItemView::selectionBehavior, QAbstractItemView::SelectRows, QPainter::setClipRect(), QPalette::setCurrentColorGroup(), QRect::setRect(), QStyle::SH_ItemView_ShowDecorationSelected, QList< T >::size(), QAbstractItemView::state(), QStyleOption::state, QStyle::State_Active, QStyle::State_Enabled, QStyle::State_HasFocus, QStyle::State_KeyboardFocusChange, QStyle::State_MouseOver, QStyle::State_Selected, QHeaderView::visualIndex(), QRect::width(), and QPalette::Window.

Referenced by drawTree().

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◆ drawTree()

void QTreeView::drawTree	(	QPainter *	painter,
		const QRegion &	region
	)		const

protected

Since: 4.2 Draws the part of the tree intersecting the given region using the specified painter.

See also: paintEvent()

Definition at line 1449 of file qtreeview.cpp.

References QList< T >::append(), area(), QList< T >::at(), QRect::bottom(), QRegion::boundingRect(), QListSpecialMethodsBase< T >::contains(), d, drawRow(), i, QAbstractItemView::initViewItemOption(), painter, QCursor::pos(), QRegion::rectCount(), QList< T >::size(), QAbstractItemView::state(), QStyle::State_Children, QStyle::State_None, QStyle::State_Open, and QStyle::State_Sibling.

Referenced by paintEvent().

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◆ expand

void QTreeView::expand ( const QModelIndex & index )

slot

Expands the model item specified by the index.

See also: expanded()

Definition at line 725 of file qtreeview.cpp.

References d, emit, expanded(), i, Qt::ItemNeverHasChildren, and updateGeometries().

Referenced by QTreeWidget::expandItem(), expandRecursively(), keyPressEvent(), scrollTo(), and setExpanded().

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◆ expandAll

void QTreeView::expandAll ( )

slot

Since: 4.2 Expands all expandable items.

Note: This function will not try to \l{QAbstractItemModel::fetchMore}{fetch more} data.

Warning: If the model contains a large number of items, this function will take some time to execute.

See also: collapseAll(), expand(), collapse(), setExpanded()

Definition at line 2672 of file qtreeview.cpp.

References d, and updateGeometries().

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◆ expanded

void QTreeView::expanded ( const QModelIndex & index )

signal

This signal is emitted when the item specified by index is expanded.

Referenced by QTreeWidget::QTreeWidget(), drawBranches(), expand(), expandRecursively(), expandToDepth(), and setExpanded().

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◆ expandRecursively

void QTreeView::expandRecursively	(	const QModelIndex &	index,
		int	depth = `-1`
	)

slot

Since: 5.13 Expands the item at the given index and all its children to the given depth. The depth is relative to the given index. A depth of -1 will expand all children, a depth of 0 will only expand the given index.

Note: This function will not try to \l{QAbstractItemModel::fetchMore}{fetch more} data.

Warning: If the model contains a large number of items, this function will take some time to execute.

See also: expandAll()

Definition at line 2697 of file qtreeview.cpp.

References child, d, emit, expand(), expanded(), QList< T >::isEmpty(), parent, QStack< T >::pop(), and QStack< T >::push().

Referenced by keyPressEvent().

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◆ expandsOnDoubleClick()

bool QTreeView::expandsOnDoubleClick ( ) const

Definition at line 451 of file qtreeview.cpp.

References d.

◆ expandToDepth

void QTreeView::expandToDepth ( int depth )

slot

Since: 4.3 Expands all expandable items to the given depth.

Note: This function will not try to \l{QAbstractItemModel::fetchMore}{fetch more} data.

See also: expandAll(), collapseAll(), expand(), collapse(), setExpanded()

Definition at line 2762 of file qtreeview.cpp.

References collapsed(), QSet< T >::constBegin(), QSet< T >::constEnd(), d, emit, expanded(), QPersistentModelIndex::flags(), QMetaMethod::fromSignal(), i, QPersistentModelIndex::isValid(), Qt::ItemNeverHasChildren, and updateGeometries().

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◆ header()

QHeaderView * QTreeView::header ( ) const

Returns the header for the tree view.

See also: QAbstractItemModel::headerData()

Definition at line 258 of file qtreeview.cpp.

References d.

Referenced by QTreeWidget::QTreeWidget(), drawRow(), QTreeWidgetItem::isHidden(), moveCursor(), resizeColumnToContents(), QFileDialogTreeView::setFileDialogPrivate(), setHeader(), QTreeWidgetItem::setHidden(), setModel(), setSortingEnabled(), QComboBox::showPopup(), QFileDialogTreeView::sizeHint(), QTreeWidget::sortColumn(), QTreeWidget::sortItems(), and QTreeWidget::visualItemRect().

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◆ hideColumn

void QTreeView::hideColumn ( int column )

slot

Hides the column given.

Note: This function should only be called after the model has been initialized, as the view needs to know the number of columns in order to hide column.

See also: showColumn(), setColumnHidden()

Definition at line 695 of file qtreeview.cpp.

References d, and doItemsLayout().

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◆ horizontalOffset()

int QTreeView::horizontalOffset ( ) const

overrideprotectedvirtual

Returns the horizontal offset of the items in the treeview.

Note that the tree view uses the horizontal header section positions to determine the positions of columns in the view.

See also: verticalOffset()

Implements QAbstractItemView.

Definition at line 2141 of file qtreeview.cpp.

References d.

Referenced by scrollTo().

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◆ horizontalScrollbarAction()

void QTreeView::horizontalScrollbarAction ( int action )

overrideprotectedvirtual

Reimplemented from QAbstractItemView.

Definition at line 3029 of file qtreeview.cpp.

References QAbstractItemView::horizontalScrollbarAction().

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◆ indentation()

int QTreeView::indentation ( ) const

Definition at line 340 of file qtreeview.cpp.

References d.

◆ indexAbove()

QModelIndex QTreeView::indexAbove ( const QModelIndex & index ) const

Returns the model index of the item above index.

Definition at line 2056 of file qtreeview.cpp.

References d, i, QModelIndex::row(), and QModelIndex::sibling().

Referenced by QTreeWidget::itemAbove().

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◆ indexAt()

QModelIndex QTreeView::indexAt ( const QPoint & p ) const

overridevirtual

\reimp

Implements QAbstractItemView.

Definition at line 2032 of file qtreeview.cpp.

References QModelIndex::column(), d, QModelIndex::isValid(), QModelIndex::row(), QModelIndex::sibling(), QPoint::x(), and QPoint::y().

Referenced by QTreeWidget::itemAt(), mouseDoubleClickEvent(), setSelection(), timerEvent(), and viewportEvent().

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◆ indexBelow()

QModelIndex QTreeView::indexBelow ( const QModelIndex & index ) const

Returns the model index of the item below index.

Definition at line 2072 of file qtreeview.cpp.

References d, i, QModelIndex::row(), and QModelIndex::sibling().

Referenced by QTreeWidget::itemBelow(), and keyboardSearch().

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◆ indexRowSizeHint()

int QTreeView::indexRowSizeHint ( const QModelIndex & index ) const

protected

Returns the size hint for the row indicated by index.

See also: sizeHintForColumn(), uniformRowHeights()

Definition at line 2948 of file qtreeview.cpp.

References d, QSize::height(), hint(), QAbstractItemView::initViewItemOption(), QModelIndex::isValid(), isVisible(), QAbstractItemView::itemDelegateForIndex(), parent, qBound(), qMax(), qSwap(), and QAbstractItemDelegate::sizeHint().

Referenced by dataChanged().

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◆ isAnimated()

bool QTreeView::isAnimated ( ) const

Definition at line 876 of file qtreeview.cpp.

References d.

◆ isColumnHidden()

bool QTreeView::isColumnHidden ( int column ) const

Returns true if the column is hidden; otherwise returns false.

See also: hideColumn(), isRowHidden()

Definition at line 511 of file qtreeview.cpp.

References d.

Referenced by isIndexHidden(), and moveCursor().

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◆ isExpanded()

bool QTreeView::isExpanded ( const QModelIndex & index ) const

Returns true if the model item index is expanded; otherwise returns false.

See also: expand(), expanded(), setExpanded()

Definition at line 797 of file qtreeview.cpp.

References d.

Referenced by QTreeWidgetItem::isExpanded(), scrollTo(), QComboBox::showPopup(), timerEvent(), and verticalScrollbarValueChanged().

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◆ isFirstColumnSpanned()

bool QTreeView::isFirstColumnSpanned	(	int	row,
		const QModelIndex &	parent
	)		const

Since: 4.3

Returns true if the item in first column in the given row of the parent is spanning all the columns; otherwise returns false.

See also: setFirstColumnSpanned()

Definition at line 597 of file qtreeview.cpp.

References d, and parent.

Referenced by QTreeWidgetItem::isFirstColumnSpanned().

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◆ isHeaderHidden()

bool QTreeView::isHeaderHidden ( ) const

Definition at line 540 of file qtreeview.cpp.

References d.

◆ isIndexHidden()

bool QTreeView::isIndexHidden ( const QModelIndex & index ) const

overrideprotectedvirtual

\reimp

Implements QAbstractItemView.

Definition at line 3037 of file qtreeview.cpp.

References isColumnHidden(), and isRowHidden().

Referenced by selectedIndexes(), visualRect(), and visualRegionForSelection().

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◆ isRowHidden()

bool QTreeView::isRowHidden	(	int	row,
		const QModelIndex &	parent
	)		const

Returns true if the item in the given row of the parent is hidden; otherwise returns false.

See also: setRowHidden(), isColumnHidden()

Definition at line 558 of file qtreeview.cpp.

References d, and parent.

Referenced by QTreeWidgetItem::isHidden(), and isIndexHidden().

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◆ isSortingEnabled()

bool QTreeView::isSortingEnabled ( ) const

Definition at line 851 of file qtreeview.cpp.

References d.

Referenced by QTreeWidgetItem::insertChild(), and QTreeWidgetItem::insertChildren().

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◆ itemsExpandable()

bool QTreeView::itemsExpandable ( ) const

Definition at line 429 of file qtreeview.cpp.

References d.

◆ keyboardSearch()

void QTreeView::keyboardSearch ( const QString & search )

overridevirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 970 of file qtreeview.cpp.

References QAbstractItemView::currentIndex(), d, Qt::DisplayRole, i, indexBelow(), QString::isEmpty(), QModelIndex::isValid(), QApplication::keyboardInputInterval, match(), QModelIndex::parent(), qMin(), QModelIndex::row(), QAbstractItemView::setCurrentIndex(), and QModelIndex::sibling().

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◆ keyPressEvent()

void QTreeView::keyPressEvent ( QKeyEvent * event )

overrideprotected

\reimp

Definition at line 2007 of file qtreeview.cpp.

References collapse(), QAbstractItemView::currentIndex(), d, expand(), expandRecursively(), Qt::Key_Asterisk, Qt::Key_Minus, Qt::Key_Plus, and QAbstractItemView::keyPressEvent().

Referenced by QFileDialogTreeView::keyPressEvent().

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◆ mouseDoubleClickEvent()

void QTreeView::mouseDoubleClickEvent ( QMouseEvent * event )

overrideprotected

\reimp

Definition at line 1938 of file qtreeview.cpp.

References QAbstractItemView::activated(), d, QAbstractItemView::DoubleClicked, QAbstractItemView::doubleClicked(), QAbstractItemView::edit(), emit, i, indexAt(), QPersistentModelIndex::isValid(), mousePressEvent(), QAbstractItemView::NoState, QStyle::SH_ItemView_ActivateItemOnSingleClick, QAbstractItemView::state(), updateGeometries(), and viewport().

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◆ mouseMoveEvent()

void QTreeView::mouseMoveEvent ( QMouseEvent * event )

overrideprotected

\reimp

Definition at line 1997 of file qtreeview.cpp.

References d, and QAbstractItemView::mouseMoveEvent().

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◆ mousePressEvent()

void QTreeView::mousePressEvent ( QMouseEvent * event )

overrideprotected

\reimp

Definition at line 1907 of file qtreeview.cpp.

References d, QEvent::MouseButtonPress, QAbstractItemView::mousePressEvent(), and QStyle::SH_ListViewExpand_SelectMouseType.

Referenced by mouseDoubleClickEvent().

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◆ mouseReleaseEvent()

void QTreeView::mouseReleaseEvent ( QMouseEvent * event )

overrideprotected

\reimp

Definition at line 1922 of file qtreeview.cpp.

References d, QAbstractItemView::DraggingState, QAbstractItemView::DragSelectingState, QEvent::MouseButtonRelease, QAbstractItemView::mouseReleaseEvent(), QAbstractItemView::NoState, QAbstractItemView::setState(), QStyle::SH_ListViewExpand_SelectMouseType, and QAbstractItemView::state().

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◆ moveCursor()

QModelIndex QTreeView::moveCursor	(	CursorAction	cursorAction,
		Qt::KeyboardModifiers	modifiers
	)

overrideprotectedvirtual

Move the cursor in the way described by cursorAction, using the information provided by the button modifiers.

Implements QAbstractItemView.

Definition at line 2176 of file qtreeview.cpp.

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◆ paintEvent()

void QTreeView::paintEvent ( QPaintEvent * event )

overrideprotected

\reimp

Definition at line 1300 of file qtreeview.cpp.

References d, drawTree(), painter, and viewport().

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◆ reexpand

void QTreeView::reexpand ( )

protectedslot

Definition at line 2490 of file qtreeview.cpp.

◆ reset()

void QTreeView::reset ( )

overridevirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 2123 of file qtreeview.cpp.

References d, and QAbstractItemView::reset().

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◆ resetIndentation()

void QTreeView::resetIndentation ( )

Definition at line 356 of file qtreeview.cpp.

References d.

◆ resizeColumnToContents

void QTreeView::resizeColumnToContents ( int column )

slot

Resizes the column given to the size of its contents.

See also: columnWidth(), setColumnWidth(), sizeHintForColumn(), QHeaderView::resizeContentsPrecision()

Definition at line 2581 of file qtreeview.cpp.

References contents, d, header(), qMax(), and sizeHintForColumn().

Referenced by setHeader().

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◆ rootIsDecorated()

bool QTreeView::rootIsDecorated ( ) const

Definition at line 376 of file qtreeview.cpp.

References d.

◆ rowHeight()

int QTreeView::rowHeight ( const QModelIndex & index ) const

protected

Since: 4.3 Returns the height of the row indicated by the given index.

See also: indexRowSizeHint()

Definition at line 3016 of file qtreeview.cpp.

References d, and i.

◆ rowsAboutToBeRemoved()

void QTreeView::rowsAboutToBeRemoved	(	const QModelIndex &	parent,
		int	start,
		int	end
	)

overrideprotectedvirtual

Informs the view that the rows from the start row to the end row inclusive are about to removed from the given parent model item.

Reimplemented from QAbstractItemView.

Definition at line 2537 of file qtreeview.cpp.

References d, parent, and QAbstractItemView::rowsAboutToBeRemoved().

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◆ rowsInserted()

void QTreeView::rowsInserted	(	const QModelIndex &	parent,
		int	start,
		int	end
	)

overrideprotectedvirtual

Informs the view that the rows from the start row to the end row inclusive have been inserted into the parent model item.

Reimplemented from QAbstractItemView.

Definition at line 2499 of file qtreeview.cpp.

References d, parent, QAbstractItemView::rowsInserted(), and viewport().

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◆ rowsRemoved

void QTreeView::rowsRemoved	(	const QModelIndex &	parent,
		int	start,
		int	end
	)

protectedslot

Since: 4.1

Informs the view that the rows from the start row to the end row inclusive have been removed from the given parent model item.

Definition at line 2550 of file qtreeview.cpp.

References d, and parent.

Referenced by setModel().

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◆ scrollContentsBy()

void QTreeView::scrollContentsBy	(	int	dx,
		int	dy
	)

overrideprotected

Scrolls the contents of the tree view by (dx, dy).

Definition at line 2425 of file qtreeview.cpp.

References d, QAbstractItemView::horizontalScrollMode, i, qAbs(), qMin(), QAbstractItemView::ScrollPerItem, QAbstractItemView::sizeHintForRow(), and QAbstractItemView::verticalScrollMode.

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◆ scrollTo()

void QTreeView::scrollTo	(	const QModelIndex &	index,
		ScrollHint	hint = `EnsureVisible`
	)

overridevirtual

Scroll the contents of the tree view until the given model item index is visible.

The hint parameter specifies more precisely where the item should be located after the operation. If any of the parents of the model item are collapsed, they will be expanded to ensure that the model item is visible.

Implements QAbstractItemView.

Definition at line 1107 of file qtreeview.cpp.

References area(), columnViewportPosition(), columnWidth(), d, QAbstractItemView::EnsureVisible, expand(), hint(), horizontalOffset(), isExpanded(), item, QAbstractItemView::NoState, parent, QAbstractItemView::PositionAtBottom, QAbstractItemView::PositionAtCenter, QAbstractItemView::PositionAtTop, rect, QAbstractItemView::ScrollPerItem, QAbstractItemView::state(), and QAbstractItemView::verticalScrollMode.

Referenced by QTreeWidget::scrollToItem(), and src_gui_itemviews_qstandarditemmodel::wrapper3().

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◆ selectAll()

void QTreeView::selectAll ( )

overridevirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 2619 of file qtreeview.cpp.

References QItemSelectionModel::ClearAndSelect, d, QAbstractItemView::NoSelection, QModelIndex::parent(), QModelIndex::row(), QItemSelectionModel::Rows, QAbstractItemView::selectionModel(), QModelIndex::sibling(), and QAbstractItemView::SingleSelection.

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◆ selectedIndexes()

QModelIndexList QTreeView::selectedIndexes ( ) const

overrideprotectedvirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 2404 of file qtreeview.cpp.

References QList< T >::append(), QList< T >::at(), i, isIndexHidden(), QModelIndex::parent(), QItemSelectionModel::selectedIndexes, QAbstractItemView::selectionModel(), and QList< T >::size().

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◆ selectionChanged()

void QTreeView::selectionChanged	(	const QItemSelection &	selected,
		const QItemSelection &	deselected
	)

overrideprotectedvirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 4031 of file qtreeview.cpp.

References d, QItemSelection::indexes(), QModelIndex::isValid(), Q_ASSERT, QAbstractItemView::selectionChanged(), and QList< T >::value().

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◆ setAllColumnsShowFocus()

void QTreeView::setAllColumnsShowFocus ( bool enable )

Definition at line 893 of file qtreeview.cpp.

References d.

◆ setAnimated()

void QTreeView::setAnimated ( bool enable )

Definition at line 870 of file qtreeview.cpp.

References d.

◆ setAutoExpandDelay()

void QTreeView::setAutoExpandDelay ( int delay )

Definition at line 321 of file qtreeview.cpp.

References d.

◆ setColumnHidden()

void QTreeView::setColumnHidden	(	int	column,
		bool	hide
	)

If hide is true the column is hidden, otherwise the column is shown.

See also: hideColumn(), setRowHidden()

Definition at line 522 of file qtreeview.cpp.

References d, and hide().

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◆ setColumnWidth()

void QTreeView::setColumnWidth	(	int	column,
		int	width
	)

Since: 4.2

Sets the width of the given column to the width specified.

See also: columnWidth(), resizeColumnToContents()

Definition at line 490 of file qtreeview.cpp.

References d.

◆ setExpanded()

void QTreeView::setExpanded	(	const QModelIndex &	index,
		bool	expanded
	)

Sets the item referred to by index to either collapse or expanded, depending on the value of expanded.

See also: expanded(), expand(), isExpanded()

Definition at line 809 of file qtreeview.cpp.

References collapse(), expand(), and expanded().

Referenced by QTreeWidgetItem::setExpanded(), and timerEvent().

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◆ setExpandsOnDoubleClick()

void QTreeView::setExpandsOnDoubleClick ( bool enable )

Definition at line 457 of file qtreeview.cpp.

References d.

◆ setFirstColumnSpanned()

void QTreeView::setFirstColumnSpanned	(	int	row,
		const QModelIndex &	parent,
		bool	span
	)

Since: 4.3

If span is true the item in the first column in the row with the given parent is set to span all columns, otherwise all items on the row are shown.

See also: isFirstColumnSpanned()

Definition at line 615 of file qtreeview.cpp.

References d, i, and parent.

Referenced by QTreeWidgetItem::setFirstColumnSpanned().

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◆ setHeader()

void QTreeView::setHeader ( QHeaderView * header )

Sets the header for the tree view, to the given header.

The view takes ownership over the given header and deletes it when a new header is set.

See also: QAbstractItemModel::headerData()

Definition at line 272 of file qtreeview.cpp.

References columnCountChanged(), columnMoved(), columnResized(), connect(), d, header(), resizeColumnToContents(), setSortingEnabled(), SIGNAL, SLOT, and updateGeometries().

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◆ setHeaderHidden()

void QTreeView::setHeaderHidden ( bool hide )

Definition at line 546 of file qtreeview.cpp.

References d, and hide().

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◆ setIndentation()

void QTreeView::setIndentation ( int i )

Definition at line 346 of file qtreeview.cpp.

References d, and i.

◆ setItemsExpandable()

void QTreeView::setItemsExpandable ( bool enable )

Definition at line 435 of file qtreeview.cpp.

References d.

Referenced by QFileDialogTreeView::setFileDialogPrivate().

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◆ setModel()

void QTreeView::setModel ( QAbstractItemModel * model )

overridevirtual

\reimp

Reimplemented from QAbstractItemView.

Reimplemented in QTreeWidget.

Definition at line 177 of file qtreeview.cpp.

References connect(), d, disconnect(), header(), QAbstractItemView::model(), rowsRemoved(), QAbstractItemView::setModel(), SIGNAL, SLOT, and QAbstractItemModelPrivate::staticEmptyModel().

Referenced by QTreeWidget::QTreeWidget(), Widget::Widget(), main(), and src_gui_itemviews_qstandarditemmodel::MyWidget::wrapper2().

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◆ setRootIndex()

void QTreeView::setRootIndex ( const QModelIndex & index )

overridevirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 223 of file qtreeview.cpp.

References d, and QAbstractItemView::setRootIndex().

Referenced by main().

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◆ setRootIsDecorated()

void QTreeView::setRootIsDecorated ( bool show )

Definition at line 382 of file qtreeview.cpp.

References d, and show().

Referenced by QFileDialogTreeView::setFileDialogPrivate().

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◆ setRowHidden()

void QTreeView::setRowHidden	(	int	row,
		const QModelIndex &	parent,
		bool	hide
	)

If hide is true the row with the given parent is hidden, otherwise the row is shown.

See also: isRowHidden(), setColumnHidden()

Definition at line 571 of file qtreeview.cpp.

References d, hide(), and parent.

Referenced by QTreeWidgetItem::setHidden().

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◆ setSelection()

void QTreeView::setSelection	(	const QRect &	rect,
		QItemSelectionModel::SelectionFlags	command
	)

overrideprotectedvirtual

Applies the selection command to the items in or touched by the rectangle, rect.

See also: selectionCommand()

Implements QAbstractItemView.

Definition at line 2308 of file qtreeview.cpp.

References QItemSelectionModel::Clear, QItemSelectionModel::clear(), d, indexAt(), QModelIndex::isValid(), qMax(), qMin(), rect, QAbstractItemView::selectionModel(), and QModelIndex::sibling().

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◆ setSelectionModel()

void QTreeView::setSelectionModel ( QItemSelectionModel * selectionModel )

overridevirtual

\reimp

Reimplemented from QAbstractItemView.

Reimplemented in QTreeWidget.

Definition at line 233 of file qtreeview.cpp.

References connect(), d, disconnect(), Q_ASSERT, QAbstractItemView::selectionModel(), QAbstractItemView::setSelectionModel(), SIGNAL, and SLOT.

Referenced by main(), and QTreeWidget::setSelectionModel().

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◆ setSortingEnabled()

void QTreeView::setSortingEnabled ( bool enable )

Definition at line 833 of file qtreeview.cpp.

References connect(), d, disconnect(), header(), QHeaderView::setSectionsClickable(), QHeaderView::setSortIndicatorShown(), SIGNAL, SLOT, sortByColumn(), and Qt::UniqueConnection.

Referenced by Widget::Widget(), QFileDialogTreeView::setFileDialogPrivate(), and setHeader().

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◆ setTreePosition()

void QTreeView::setTreePosition ( int index )

Since: 5.2

This specifies that the tree structure should be placed at logical index index. If \index is set to -1 then the tree will always follow visual index 0.

See also: treePosition(), QHeaderView::swapSections(), QHeaderView::moveSection()

Definition at line 945 of file qtreeview.cpp.

References d.

◆ setUniformRowHeights()

void QTreeView::setUniformRowHeights ( bool uniform )

Definition at line 413 of file qtreeview.cpp.

References d.

◆ setWordWrap()

void QTreeView::setWordWrap ( bool on )

Definition at line 921 of file qtreeview.cpp.

References d.

◆ showColumn

void QTreeView::showColumn ( int column )

slot

Shows the given column in the tree view.

See also: hideColumn(), setColumnHidden()

Definition at line 709 of file qtreeview.cpp.

References d, and doItemsLayout().

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◆ sizeHintForColumn()

int QTreeView::sizeHintForColumn ( int column ) const

overrideprotectedvirtual

Returns the size hint for the column's width or -1 if there is no model.

If you need to set the width of a given column to a fixed value, call QHeaderView::resizeSection() on the view's header.

If you reimplement this function in a subclass, note that the value you return is only used when resizeColumnToContents() is called. In that case, if a larger column width is required by either the view's header or the item delegate, that width will be used instead.

See also: QWidget::sizeHint, header(), QHeaderView::resizeContentsPrecision()

Reimplemented from QAbstractItemView.

Definition at line 2860 of file qtreeview.cpp.

References QList< T >::at(), d, i, QAbstractItemView::initViewItemOption(), qMax(), QList< T >::size(), and viewport().

Referenced by resizeColumnToContents().

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◆ sortByColumn

void QTreeView::sortByColumn	(	int	column,
		Qt::SortOrder	order
	)

slot

Since: 4.2

Sorts the model by the values in the given column and order.

column may be -1, in which case no sort indicator will be shown and the model will return to its natural, unsorted order. Note that not all models support this and may even crash in this case.

See also: sortingEnabled

Definition at line 2603 of file qtreeview.cpp.

References d.

Referenced by setSortingEnabled().

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◆ timerEvent()

void QTreeView::timerEvent ( QTimerEvent * event )

overrideprotected

\reimp

Definition at line 1222 of file qtreeview.cpp.

References columnViewportPosition(), columnWidth(), d, QAbstractItemView::DraggingState, i, indexAt(), isExpanded(), pos, QCursor::pos(), rect, setExpanded(), QAbstractItemView::state(), QAbstractItemView::timerEvent(), and updateGeometries().

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◆ treePosition()

int QTreeView::treePosition ( ) const

Since: 5.2

Return the logical index the tree is set on. If the return value is -1 then the tree is placed on the visual index 0.

See also: setTreePosition()

Definition at line 961 of file qtreeview.cpp.

References d.

◆ uniformRowHeights()

bool QTreeView::uniformRowHeights ( ) const

Definition at line 407 of file qtreeview.cpp.

References d.

◆ updateGeometries()

void QTreeView::updateGeometries ( )

overrideprotectedvirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 2823 of file qtreeview.cpp.

References d, QMetaObject::invokeMethod(), QRect::left(), qMax(), qMin(), QRect::top(), QAbstractItemView::updateGeometries(), and QRect::width().

Referenced by collapse(), columnCountChanged(), expand(), expandAll(), expandToDepth(), mouseDoubleClickEvent(), moveCursor(), setHeader(), and timerEvent().

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◆ verticalOffset()

int QTreeView::verticalOffset ( ) const

overrideprotectedvirtual

Returns the vertical offset of the items in the tree view.

See also: horizontalOffset()

Implements QAbstractItemView.

Definition at line 2152 of file qtreeview.cpp.

References d, i, qMin(), and QAbstractItemView::ScrollPerItem.

Referenced by drawBranches().

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◆ verticalScrollbarValueChanged

void QTreeView::verticalScrollbarValueChanged ( int value )

overrideprotectedslot

Definition at line 4071 of file qtreeview.cpp.

References d, isExpanded(), ret, and QAbstractItemView::verticalScrollbarValueChanged().

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◆ viewportEvent()

bool QTreeView::viewportEvent ( QEvent * event )

overrideprotected

\reimp

Definition at line 1271 of file qtreeview.cpp.

References d, QEvent::HoverEnter, QEvent::HoverLeave, QEvent::HoverMove, indexAt(), QSinglePointEvent::position(), rect, QPointF::toPoint(), viewport(), QAbstractItemView::viewportEvent(), and visualRect().

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◆ viewportSizeHint()

QSize QTreeView::viewportSizeHint ( ) const

overrideprotected

\reimp

Definition at line 2638 of file qtreeview.cpp.

References QRect::bottom(), d, QRect::isValid(), QAbstractItemView::viewportSizeHint(), and visualRect().

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◆ visualRect()

QRect QTreeView::visualRect ( const QModelIndex & index ) const

overridevirtual

Returns the rectangle on the viewport occupied by the item at index.

If the index is not visible or explicitly hidden, the returned rectangle is invalid.

Implements QAbstractItemView.

Definition at line 1067 of file qtreeview.cpp.

References columnViewportPosition(), columnWidth(), d, i, and isIndexHidden().

Referenced by currentChanged(), viewportEvent(), viewportSizeHint(), QTreeWidget::visualItemRect(), and visualRegionForSelection().

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◆ visualRegionForSelection()

QRegion QTreeView::visualRegionForSelection ( const QItemSelection & selection ) const

overrideprotectedvirtual

Returns the rectangle from the viewport of the items in the given selection.

Since 4.7, the returned region only contains rectangles intersecting (or included in) the viewport.

Implements QAbstractItemView.

Definition at line 2347 of file qtreeview.cpp.

References QRect::bottom(), QModelIndex::column(), columnViewportPosition(), columnWidth(), d, QRect::intersects(), QList< T >::isEmpty(), isIndexHidden(), QModelIndex::isValid(), parent, QModelIndex::row(), selection, QRect::setX(), QRect::top(), and visualRect().

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◆ wordWrap()

bool QTreeView::wordWrap ( ) const

Definition at line 930 of file qtreeview.cpp.

References d.

Friends And Related Symbol Documentation

◆ ::tst_QTreeView

friend class ::tst_QTreeView

friend

Definition at line 190 of file qtreeview.h.

◆ QAccessibleTable

friend class QAccessibleTable

friend

Definition at line 191 of file qtreeview.h.

◆ QAccessibleTableCell

friend class QAccessibleTableCell

friend

Definition at line 193 of file qtreeview.h.

◆ QAccessibleTree

friend class QAccessibleTree

friend

Definition at line 192 of file qtreeview.h.

Property Documentation

◆ allColumnsShowFocus

QTreeView::allColumnsShowFocus

readwrite

whether items should show keyboard focus using all columns

Since: 4.2

If this property is true all columns will show focus, otherwise only one column will show focus.

The default is false.

Definition at line 205 of file qtreeview.h.

Referenced by currentChanged(), and drawRow().

◆ animated

QTreeView::animated

readwrite

whether animations are enabled

Since: 4.2

If this property is true the treeview will animate expansion and collapsing of branches. If this property is false, the treeview will expand or collapse branches immediately without showing the animation.

By default, this property is false.

Definition at line 205 of file qtreeview.h.

◆ autoExpandDelay

QTreeView::autoExpandDelay

readwrite

The delay time before items in a tree are opened during a drag and drop operation.

Since: 4.3

This property holds the amount of time in milliseconds that the user must wait over a node before that node will automatically open or close. If the time is set to less then 0 then it will not be activated.

By default, this property has a value of -1, meaning that auto-expansion is disabled.

Definition at line 205 of file qtreeview.h.

◆ expandsOnDoubleClick

QTreeView::expandsOnDoubleClick

readwrite

whether the items can be expanded by double-clicking.

Since: 4.4

This property holds whether the user can expand and collapse items by double-clicking. The default value is true.

See also: itemsExpandable

Definition at line 205 of file qtreeview.h.

◆ headerHidden

QTreeView::headerHidden

readwrite

whether the header is shown or not.

Since: 4.4

If this property is true, the header is not shown otherwise it is. The default value is false.

See also: header()

Definition at line 205 of file qtreeview.h.

◆ indentation

QTreeView::indentation

readwrite

indentation of the items in the tree view.

This property holds the indentation measured in pixels of the items for each level in the tree view. For top-level items, the indentation specifies the horizontal distance from the viewport edge to the items in the first column; for child items, it specifies their indentation from their parent items.

By default, the value of this property is style dependent. Thus, when the style changes, this property updates from it. Calling setIndentation() stops the updates, calling resetIndentation() will restore default behavior.

Definition at line 205 of file qtreeview.h.

◆ itemsExpandable

QTreeView::itemsExpandable

readwrite

whether the items are expandable by the user.

This property holds whether the user can expand and collapse items interactively.

By default, this property is true.

Definition at line 205 of file qtreeview.h.

◆ rootIsDecorated

QTreeView::rootIsDecorated

readwrite

whether to show controls for expanding and collapsing top-level items

Items with children are typically shown with controls to expand and collapse them, allowing their children to be shown or hidden. If this property is false, these controls are not shown for top-level items. This can be used to make a single level tree structure appear like a simple list of items.

By default, this property is true.

Definition at line 205 of file qtreeview.h.

◆ sortingEnabled

QTreeView::sortingEnabled

readwrite

whether sorting is enabled

Since: 4.2

If this property is true, sorting is enabled for the tree; if the property is false, sorting is not enabled. The default value is false.

Note: In order to avoid performance issues, it is recommended that sorting is enabled after inserting the items into the tree. Alternatively, you could also insert the items into a list before inserting the items into the tree.

See also: sortByColumn()

Definition at line 205 of file qtreeview.h.

◆ uniformRowHeights

QTreeView::uniformRowHeights

readwrite

whether all items in the treeview have the same height

This property should only be set to true if it is guaranteed that all items in the view has the same height. This enables the view to do some optimizations.

The height is obtained from the first item in the view. It is updated when the data changes on that item.

Note: If the editor size hint is bigger than the cell size hint, then the size hint of the editor will be used.

By default, this property is false.

Definition at line 205 of file qtreeview.h.

◆ wordWrap

QTreeView::wordWrap

readwrite

the item text word-wrapping policy

Since: 4.3

If this property is true then the item text is wrapped where necessary at word-breaks; otherwise it is not wrapped at all. This property is false by default.

Note that even if wrapping is enabled, the cell will not be expanded to fit all text. Ellipsis will be inserted according to the current \l{QAbstractItemView::}{textElideMode}.

Definition at line 205 of file qtreeview.h.

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

qtbase/src/widgets/itemviews/qtreeview.h
qtbase/src/widgets/itemviews/qtreeview.cpp

Public Slots

Signals

Public Member Functions

Protected Slots

Protected Member Functions

Properties

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QTreeView() [1/2]

◆ ~QTreeView()

◆ QTreeView() [2/2]

Member Function Documentation

◆ allColumnsShowFocus()

◆ autoExpandDelay()

◆ changeEvent()

◆ collapse

◆ collapseAll

◆ collapsed

◆ columnAt()

◆ columnCountChanged

◆ columnMoved

◆ columnResized

◆ columnViewportPosition()

◆ columnWidth()

◆ currentChanged()

◆ dataChanged()

◆ doItemsLayout()

◆ drawBranches()

◆ drawRow()

◆ drawTree()

◆ expand

◆ expandAll

◆ expanded

◆ expandRecursively

◆ expandsOnDoubleClick()

◆ expandToDepth

◆ header()

◆ hideColumn

◆ horizontalOffset()

◆ horizontalScrollbarAction()

◆ indentation()

◆ indexAbove()

◆ indexAt()

◆ indexBelow()

◆ indexRowSizeHint()

◆ isAnimated()

◆ isColumnHidden()

◆ isExpanded()

◆ isFirstColumnSpanned()

◆ isHeaderHidden()

◆ isIndexHidden()

◆ isRowHidden()

◆ isSortingEnabled()

◆ itemsExpandable()

◆ keyboardSearch()

◆ keyPressEvent()

◆ mouseDoubleClickEvent()

◆ mouseMoveEvent()

◆ mousePressEvent()

◆ mouseReleaseEvent()

◆ moveCursor()

◆ paintEvent()

◆ reexpand

◆ reset()

◆ resetIndentation()

◆ resizeColumnToContents

◆ rootIsDecorated()

◆ rowHeight()

◆ rowsAboutToBeRemoved()

◆ rowsInserted()

◆ rowsRemoved

◆ scrollContentsBy()

◆ scrollTo()

◆ selectAll()

◆ selectedIndexes()

◆ selectionChanged()

◆ setAllColumnsShowFocus()

◆ setAnimated()