The QListView class provides a list or icon view onto a model. More...

#include <qlistview.h>

Inheritance diagram for QListView:

Collaboration diagram for QListView:

Public Types
enum	Movement { Static , Free , Snap }
	\value Static The items cannot be moved by the user. More...

enum	Flow { LeftToRight , TopToBottom }
	\value LeftToRight The items are laid out in the view from the left to the right. More...

enum	ResizeMode { Fixed , Adjust }
	\value Fixed The items will only be laid out the first time the view is shown. More...

enum	LayoutMode { SinglePass , Batched }
	\value SinglePass The items are laid out all at once. More...

enum	ViewMode { ListMode , IconMode }
	\value ListMode The items are laid out using TopToBottom flow, with Small size and Static movement \value IconMode The items are laid out using LeftToRight flow, with Large size and Free movement More...

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 }

Signals
void	indexesMoved (const QModelIndexList &indexes)

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
	QListView (QWidget *parent=nullptr)
	Creates a new QListView with the given parent to view a model.

	~QListView ()
	Destroys the view.

void	setMovement (Movement movement)

Movement	movement () const

void	setFlow (Flow flow)

Flow	flow () const

void	setWrapping (bool enable)

bool	isWrapping () const

void	setResizeMode (ResizeMode mode)

ResizeMode	resizeMode () const

void	setLayoutMode (LayoutMode mode)

LayoutMode	layoutMode () const

void	setSpacing (int space)

int	spacing () const

void	setBatchSize (int batchSize)

int	batchSize () const

void	setGridSize (const QSize &size)

QSize	gridSize () const

void	setViewMode (ViewMode mode)

ViewMode	viewMode () const

void	clearPropertyFlags ()
	Clears the QListView-specific property flags.

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

void	setRowHidden (int row, bool hide)
	If hide is true, the given row will be hidden; otherwise the row will be shown.

void	setModelColumn (int column)

int	modelColumn () const

void	setUniformItemSizes (bool enable)

bool	uniformItemSizes () const

void	setWordWrap (bool on)

bool	wordWrap () const

void	setSelectionRectVisible (bool show)

bool	isSelectionRectVisible () const

void	setItemAlignment (Qt::Alignment alignment)

Qt::Alignment	itemAlignment () const

QRect	visualRect (const QModelIndex &index) const override
	\reimp

void	scrollTo (const QModelIndex &index, ScrollHint hint=EnsureVisible) override
	\reimp

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

void	doItemsLayout () override

void	reset () override

void	setRootIndex (const QModelIndex &index) 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 Member Functions
	QListView (QListViewPrivate &, QWidget *parent=nullptr)

bool	event (QEvent *e) override
	\reimp

void	scrollContentsBy (int dx, int dy) override
	\reimp

void	resizeContents (int width, int height)

QSize	contentsSize () const

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

void	rowsInserted (const QModelIndex &parent, int start, int end) override
	\reimp

void	rowsAboutToBeRemoved (const QModelIndex &parent, int start, int end) override
	\reimp

void	mouseMoveEvent (QMouseEvent *e) override
	\reimp

void	mouseReleaseEvent (QMouseEvent *e) override
	\reimp

void	timerEvent (QTimerEvent *e) override
	\reimp

void	resizeEvent (QResizeEvent *e) override
	\reimp

void	initViewItemOption (QStyleOptionViewItem *option) const override
	\reimp

void	paintEvent (QPaintEvent *e) override
	\reimp

int	horizontalOffset () const override
	\reimp

int	verticalOffset () const override
	\reimp

QModelIndex	moveCursor (CursorAction cursorAction, Qt::KeyboardModifiers modifiers) override
	\reimp

QRect	rectForIndex (const QModelIndex &index) const
	Returns the rectangle of the item at position index in the model.

void	setPositionForIndex (const QPoint &position, const QModelIndex &index)

void	setSelection (const QRect &rect, QItemSelectionModel::SelectionFlags command) override
	\reimp

QRegion	visualRegionForSelection (const QItemSelection &selection) const override
	\reimp

QModelIndexList	selectedIndexes () const override
	\reimp

void	updateGeometries () override
	\reimp

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

QSize	viewportSizeHint () const override

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
Movement	movement
	whether the items can be moved freely, are snapped to a grid, or cannot be moved at all.

Flow	flow
	which direction the items layout should flow.

bool	isWrapping
	whether the items layout should wrap.

ResizeMode	resizeMode
	whether the items are laid out again when the view is resized.

LayoutMode	layoutMode
	determines whether the layout of items should happen immediately or be delayed.

int	spacing
	the space around the items in the layout

QSize	gridSize
	the size of the layout grid

ViewMode	viewMode
	the view mode of the QListView.

int	modelColumn
	the column in the model that is visible

bool	uniformItemSizes
	whether all items in the listview have the same size

int	batchSize
	the number of items laid out in each batch if \l layoutMode is set to \l Batched

bool	wordWrap
	the item text word-wrapping policy

bool	selectionRectVisible
	if the selection rectangle should be visible

Qt::Alignment	itemAlignment
	the alignment of each item in its cell

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	QCommonListViewBase

Additional Inherited Members
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)

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...

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.

Detailed Description

The QListView class provides a list or icon view onto a model.

\inmodule QtWidgets

A QListView presents items stored in a model, either as a simple non-hierarchical list, or as a collection of icons. This class is used to provide lists and icon views that were previously provided by the QListBox and QIconView classes, but using the more flexible approach provided by Qt's model/view architecture.

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

This view does not display horizontal or vertical headers; to display a list of items with a horizontal header, use QTreeView instead.

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

Items in a list view can be displayed using one of two view modes: In \l ListMode, the items are displayed in the form of a simple list; in \l IconMode, the list view takes the form of an {icon view} in which the items are displayed with icons like files in a file manager. By default, the list view is in \l ListMode. To change the view mode, use the setViewMode() function, and to determine the current view mode, use viewMode().

Items in these views are laid out in the direction specified by the flow() of the list view. The items may be fixed in place, or allowed to move, depending on the view's movement() state.

If the items in the model cannot be completely laid out in the direction of flow, they can be wrapped at the boundary of the view widget; this depends on isWrapping(). This property is useful when the items are being represented by an icon view.

The resizeMode() and layoutMode() govern how and when the items are laid out. Items are spaced according to their spacing(), and can exist within a notional grid of size specified by gridSize(). The items can be rendered as large or small icons depending on their iconSize().

Definition at line 16 of file qlistview.h.

Member Enumeration Documentation

◆ Flow

enum QListView::Flow

\value LeftToRight The items are laid out in the view from the left to the right.

\value TopToBottom The items are laid out in the view from the top to the bottom.

Enumerator
LeftToRight
TopToBottom

Definition at line 37 of file qlistview.h.

◆ LayoutMode

enum QListView::LayoutMode

\value SinglePass The items are laid out all at once.

\value Batched The items are laid out in batches of \l batchSize items.

See also: batchSize

Enumerator
SinglePass
Batched

Definition at line 41 of file qlistview.h.

◆ Movement

enum QListView::Movement

\value Static The items cannot be moved by the user.

\value Free The items can be moved freely by the user. \value Snap The items snap to the specified grid when moved; see setGridSize().

Enumerator
Static
Free
Snap

Definition at line 35 of file qlistview.h.

◆ ResizeMode

enum QListView::ResizeMode

\value Fixed The items will only be laid out the first time the view is shown.

\value Adjust The items will be laid out every time the view is resized.

Enumerator
Fixed
Adjust

Definition at line 39 of file qlistview.h.

◆ ViewMode

enum QListView::ViewMode

\value ListMode The items are laid out using TopToBottom flow, with Small size and Static movement \value IconMode The items are laid out using LeftToRight flow, with Large size and Free movement

Enumerator
ListMode
IconMode

Definition at line 43 of file qlistview.h.

Constructor & Destructor Documentation

◆ QListView() [1/2]

QListView::QListView ( QWidget * parent = nullptr )

explicit

Creates a new QListView with the given parent to view a model.

Use setModel() to set the model.

Definition at line 145 of file qlistview.cpp.

References d, ListMode, setAttribute(), QAbstractItemView::setSelectionMode(), setViewMode(), QAbstractItemView::SingleSelection, and Qt::WA_MacShowFocusRect.

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◆ ~QListView()

QListView::~QListView ( )

Destroys the view.

Definition at line 171 of file qlistview.cpp.

◆ QListView() [2/2]

QListView::QListView	(	QListViewPrivate &	dd,
		QWidget *	parent = `nullptr`
	)

protected

Definition at line 158 of file qlistview.cpp.

References d, ListMode, setAttribute(), QAbstractItemView::setSelectionMode(), setViewMode(), QAbstractItemView::SingleSelection, and Qt::WA_MacShowFocusRect.

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Member Function Documentation

◆ batchSize()

int QListView::batchSize ( ) const

Definition at line 372 of file qlistview.cpp.

References d.

◆ clearPropertyFlags()

void QListView::clearPropertyFlags ( )

Clears the QListView-specific property flags.

See \l{viewMode}.

Properties inherited from QAbstractItemView are not covered by the property flags. Specifically, \l{QAbstractItemView::dragEnabled} {dragEnabled} and \l{QAbstractItemView::acceptDrops} {acceptsDrops} are computed by QListView when calling setMovement() or setViewMode().

Definition at line 488 of file qlistview.cpp.

References d.

◆ contentsSize()

QSize QListView::contentsSize ( ) const

protected

Definition at line 692 of file qlistview.cpp.

References d.

Referenced by QComboBoxListView::resizeEvent(), setSelection(), and updateGeometries().

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◆ currentChanged()

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

overrideprotectedvirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 3400 of file qlistview.cpp.

References QAbstractItemView::currentChanged(), and QModelIndex::isValid().

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◆ dataChanged()

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

overrideprotectedvirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 701 of file qlistview.cpp.

References QAbstractItemView::dataChanged().

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◆ doItemsLayout()

void QListView::doItemsLayout ( )

overridevirtual

Layout the items according to the flow and wrapping properties.

Reimplemented from QAbstractItemView.

Definition at line 1539 of file qlistview.cpp.

References d, QAbstractItemView::doItemsLayout(), QAbstractItemView::ExpandingState, layoutMode, QAbstractItemView::setState(), SinglePass, and QAbstractItemView::state().

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◆ event()

bool QListView::event ( QEvent * e )

overrideprotected

\reimp

Definition at line 1742 of file qlistview.cpp.

References e, and QAbstractItemView::event().

Referenced by QSidebar::event(), and QListWidget::event().

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◆ flow()

QListView::Flow QListView::flow ( ) const

Definition at line 239 of file qlistview.cpp.

References d.

◆ gridSize()

QSize QListView::gridSize ( ) const

Definition at line 401 of file qlistview.cpp.

References d.

◆ horizontalOffset()

int QListView::horizontalOffset ( ) const

overrideprotectedvirtual

\reimp

Implements QAbstractItemView.

Definition at line 1111 of file qlistview.cpp.

Referenced by indexAt(), mouseMoveEvent(), paintEvent(), and setSelection().

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◆ indexAt()

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

overridevirtual

\reimp

Implements QAbstractItemView.

Definition at line 1096 of file qlistview.cpp.

References contains(), d, horizontalOffset(), QList< T >::last(), rect, QList< T >::size(), verticalOffset(), and visualRect().

Referenced by QListWidget::itemAt().

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◆ indexesMoved

void QListView::indexesMoved ( const QModelIndexList & indexes )

signal

Since: 4.2

This signal is emitted when the specified indexes are moved in the view.

◆ initViewItemOption()

void QListView::initViewItemOption ( QStyleOptionViewItem * option ) const

overrideprotectedvirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 958 of file qlistview.cpp.

References Qt::AlignCenter, d, IconMode, QAbstractItemView::initViewItemOption(), ListMode, QStyle::PM_IconViewIconSize, and QStyle::PM_ListViewIconSize.

Referenced by QCommonListViewBase::initViewItemOption(), QComboBoxListView::initViewItemOption(), paintEvent(), updateGeometries(), and viewportSizeHint().

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◆ isIndexHidden()

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

overrideprotectedvirtual

\reimp

Implements QAbstractItemView.

Definition at line 1603 of file qlistview.cpp.

References d.

Referenced by selectedIndexes().

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◆ isRowHidden()

bool QListView::isRowHidden ( int row ) const

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

Definition at line 497 of file qlistview.cpp.

References d.

◆ isSelectionRectVisible()

bool QListView::isSelectionRectVisible ( ) const

Definition at line 1707 of file qlistview.cpp.

References d.

◆ isWrapping()

bool QListView::isWrapping ( ) const

Definition at line 268 of file qlistview.cpp.

References d.

◆ itemAlignment()

Qt::Alignment QListView::itemAlignment ( ) const

Definition at line 1733 of file qlistview.cpp.

References d.

◆ layoutMode()

QListView::LayoutMode QListView::layoutMode ( ) const

Definition at line 318 of file qlistview.cpp.

References d.

◆ modelColumn()

int QListView::modelColumn ( ) const

Definition at line 1627 of file qlistview.cpp.

References d.

◆ mouseMoveEvent()

void QListView::mouseMoveEvent ( QMouseEvent * e )

overrideprotected

\reimp

Definition at line 746 of file qlistview.cpp.

References d, QAbstractItemView::DragSelectingState, e, horizontalOffset(), isVisible(), QAbstractItemView::mouseMoveEvent(), QAbstractItemView::NoSelection, rect, QAbstractItemView::SingleSelection, QAbstractItemView::state(), and verticalOffset().

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◆ mouseReleaseEvent()

void QListView::mouseReleaseEvent ( QMouseEvent * e )

overrideprotected

\reimp

Definition at line 766 of file qlistview.cpp.

References d, e, and QAbstractItemView::mouseReleaseEvent().

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◆ moveCursor()

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

overrideprotectedvirtual

\reimp

Implements QAbstractItemView.

Definition at line 1127 of file qlistview.cpp.

References contents, QAbstractItemView::currentIndex(), d, QList< T >::isEmpty(), QModelIndex::isValid(), LeftToRight, moveCursor(), QAbstractItemView::MoveDown, QAbstractItemView::MoveEnd, QAbstractItemView::MoveHome, QAbstractItemView::MoveLeft, QAbstractItemView::MoveNext, QAbstractItemView::MovePageDown, QAbstractItemView::MovePageUp, QAbstractItemView::MovePrevious, QAbstractItemView::MoveRight, QAbstractItemView::MoveUp, Q_UNUSED, rect, rectForIndex(), QModelIndex::row(), and TopToBottom.

Referenced by moveCursor().

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◆ movement()

QListView::Movement QListView::movement ( ) const

Definition at line 208 of file qlistview.cpp.

References d.

◆ paintEvent()

void QListView::paintEvent ( QPaintEvent * e )

overrideprotected

\reimp

Definition at line 985 of file qlistview.cpp.

References QStyle::CE_RubberBand, QList< T >::constBegin(), QList< T >::constEnd(), QAbstractItemView::currentIndex(), d, QPalette::Disabled, e, QAbstractItemView::EditingState, QAbstractItemModel::flags(), flow, focus, horizontalOffset(), QStyleOption::initFrom(), initViewItemOption(), QItemSelectionModel::isSelected(), QModelIndex::isValid(), it, QAbstractItemView::itemDelegateForIndex(), Qt::ItemIsEnabled, QPalette::Normal, opt, QAbstractItemDelegate::paint(), painter, QStyle::PE_PanelItemViewRow, Q_ASSERT, qMax(), qMin(), QStyleOption::rect, QRubberBand::Rectangle, QPainter::restore(), QPainter::save(), QAbstractItemView::state(), QStyle::State_Editing, QStyle::State_Enabled, QStyle::State_HasFocus, QStyle::State_MouseOver, QStyle::State_Selected, TopToBottom, verticalOffset(), viewport(), and visualRect().

Referenced by QComboBoxListView::paintEvent().

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◆ rectForIndex()

QRect QListView::rectForIndex ( const QModelIndex & index ) const

protected

Returns the rectangle of the item at position index in the model.

The rectangle is in contents coordinates.

See also: visualRect()

Definition at line 1308 of file qlistview.cpp.

Referenced by moveCursor(), and visualRect().

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◆ reset()

void QListView::reset ( )

overridevirtual

Reimplemented from QAbstractItemView.

Definition at line 643 of file qlistview.cpp.

References d, and QAbstractItemView::reset().

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◆ resizeContents()

void QListView::resizeContents	(	int	width,
		int	height
	)

protected

Resize the internal contents to width and height and set the scroll bar ranges accordingly.

Definition at line 683 of file qlistview.cpp.

References d.

Referenced by QComboBoxListView::resizeEvent().

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◆ resizeEvent()

void QListView::resizeEvent ( QResizeEvent * e )

overrideprotected

\reimp

Definition at line 825 of file qlistview.cpp.

References Adjust, d, e, QSize::height(), QSize::isNull(), LeftToRight, ListMode, QAbstractItemView::NoState, QAbstractItemView::resizeEvent(), QAbstractItemView::state(), TopToBottom, and QSize::width().

Referenced by QComboBoxListView::resizeEvent().

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◆ resizeMode()

QListView::ResizeMode QListView::resizeMode ( ) const

Definition at line 293 of file qlistview.cpp.

References d.

◆ rowsAboutToBeRemoved()

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

overrideprotectedvirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 723 of file qlistview.cpp.

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

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◆ rowsInserted()

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

overrideprotectedvirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 711 of file qlistview.cpp.

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

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◆ scrollContentsBy()

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

overrideprotected

\reimp

Scroll the view contents by dx and dy.

Definition at line 670 of file qlistview.cpp.

References d, and QAbstractItemView::DragSelectingState.

◆ scrollTo()

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

overridevirtual

\reimp

Implements QAbstractItemView.

Definition at line 531 of file qlistview.cpp.

References d, QAbstractItemView::EnsureVisible, hint(), LeftToRight, rect, TopToBottom, and visualRect().

Referenced by QListWidget::scrollToItem().

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◆ selectedIndexes()

QModelIndexList QListView::selectedIndexes ( ) const

overrideprotectedvirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 1520 of file qlistview.cpp.

References d, isIndexHidden(), and QList< T >::removeIf().

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◆ selectionChanged()

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

overrideprotectedvirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 3418 of file qlistview.cpp.

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

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◆ setBatchSize()

void QListView::setBatchSize ( int batchSize )

Definition at line 362 of file qlistview.cpp.

References batchSize, d, Q_UNLIKELY, and qWarning.

◆ setFlow()

void QListView::setFlow ( Flow flow )

Definition at line 231 of file qlistview.cpp.

References d, flow, and QListViewPrivate::Flow.

◆ setGridSize()

void QListView::setGridSize ( const QSize & size )

Definition at line 393 of file qlistview.cpp.

References d, and QListViewPrivate::GridSize.

◆ setItemAlignment()

void QListView::setItemAlignment ( Qt::Alignment alignment )

Definition at line 1723 of file qlistview.cpp.

References alignment, d, flow, isWrapping, ListMode, TopToBottom, and viewMode.

◆ setLayoutMode()

void QListView::setLayoutMode ( LayoutMode mode )

Definition at line 312 of file qlistview.cpp.

References d.

◆ setModelColumn()

void QListView::setModelColumn ( int column )

Definition at line 1618 of file qlistview.cpp.

References d.

Referenced by QCompleter::popup(), QCompleter::setCompletionColumn(), QComboBox::setModelColumn(), and QCompleter::setPopup().

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◆ setMovement()

void QListView::setMovement ( Movement movement )

Definition at line 194 of file qlistview.cpp.

References d, movement, QListViewPrivate::Movement, and Static.

◆ setPositionForIndex()

void QListView::setPositionForIndex	(	const QPoint &	position,
		const QModelIndex &	index
	)

protected

Since: 4.1

Sets the contents position of the item at index in the model to the given position. If the list view's movement mode is Static or its view mode is ListView, this function will have no effect.

Definition at line 1321 of file qlistview.cpp.

References d, position(), and Static.

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◆ setResizeMode()

void QListView::setResizeMode ( ResizeMode mode )

Definition at line 286 of file qlistview.cpp.

References d, and QListViewPrivate::ResizeMode.

Referenced by QFileDialogListView::setFileDialogPrivate().

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◆ setRootIndex()

void QListView::setRootIndex ( const QModelIndex & index )

overridevirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 654 of file qlistview.cpp.

References d, qMax(), qMin(), and QAbstractItemView::setRootIndex().

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◆ setRowHidden()

void QListView::setRowHidden	(	int	row,
		bool	hide
	)

If hide is true, the given row will be hidden; otherwise the row will be shown.

Definition at line 507 of file qlistview.cpp.

References d, and hide().

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◆ setSelection()

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

overrideprotectedvirtual

\reimp

Implements QAbstractItemView.

Definition at line 1337 of file qlistview.cpp.

References ch, contentsSize(), d, QAbstractItemView::DragSelectingState, gridSize, QSize::height(), horizontalOffset(), QList< T >::isEmpty(), QModelIndex::isValid(), QList< T >::last(), LeftToRight, QItemSelection::merge(), qMax(), qMin(), qSwap(), rect, QItemSelectionModel::Select, QItemSelection::select(), selection, QRect::setBottom(), QRect::setLeft(), QRect::setRight(), QRect::setTop(), QAbstractItemView::state(), and verticalOffset().

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◆ setSelectionRectVisible()

void QListView::setSelectionRectVisible ( bool show )

Definition at line 1700 of file qlistview.cpp.

References d, QListViewPrivate::SelectionRectVisible, and show().

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◆ setSpacing()

void QListView::setSpacing ( int space )

Definition at line 338 of file qlistview.cpp.

References d, and QListViewPrivate::Spacing.

◆ setUniformItemSizes()

void QListView::setUniformItemSizes ( bool enable )

Definition at line 1644 of file qlistview.cpp.

References d.

Referenced by QFontComboBox::QFontComboBox(), and QSidebar::setModelAndUrls().

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◆ setViewMode()

void QListView::setViewMode ( ViewMode mode )

Definition at line 422 of file qlistview.cpp.

References d, Fixed, QListViewPrivate::Flow, Free, QListViewPrivate::GridSize, LeftToRight, ListMode, QListViewPrivate::Movement, QAbstractItemView::QListModeViewBase, QListViewPrivate::ResizeMode, QListViewPrivate::SelectionRectVisible, QListViewPrivate::Spacing, Static, TopToBottom, and QListViewPrivate::Wrap.

Referenced by QListView(), and QListView().

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◆ setWordWrap()

void QListView::setWordWrap ( bool on )

Definition at line 1670 of file qlistview.cpp.

References d.

◆ setWrapping()

void QListView::setWrapping ( bool enable )

Definition at line 260 of file qlistview.cpp.

References d, and QListViewPrivate::Wrap.

Referenced by QFileDialogListView::setFileDialogPrivate().

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◆ spacing()

int QListView::spacing ( ) const

Definition at line 346 of file qlistview.cpp.

References d.

◆ timerEvent()

void QListView::timerEvent ( QTimerEvent * e )

overrideprotected

\reimp

Definition at line 809 of file qlistview.cpp.

References d, e, QAbstractItemView::timerEvent(), and updateGeometries().

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◆ uniformItemSizes()

bool QListView::uniformItemSizes ( ) const

Definition at line 1650 of file qlistview.cpp.

References d.

◆ updateGeometries()

void QListView::updateGeometries ( )

overrideprotectedvirtual

\reimp

Reimplemented from QAbstractItemView.

Definition at line 1565 of file qlistview.cpp.

References contentsSize(), d, initViewItemOption(), Qt::ScrollBarAlwaysOff, Static, TopToBottom, QAbstractItemView::updateGeometries(), and viewport().

Referenced by timerEvent().

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◆ verticalOffset()

int QListView::verticalOffset ( ) const

overrideprotectedvirtual

\reimp

Implements QAbstractItemView.

Definition at line 1119 of file qlistview.cpp.

Referenced by indexAt(), mouseMoveEvent(), paintEvent(), and setSelection().

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◆ viewMode()

QListView::ViewMode QListView::viewMode ( ) const

Definition at line 473 of file qlistview.cpp.

References d.

◆ viewportSizeHint()

QSize QListView::viewportSizeHint ( ) const

overrideprotected

Since: 5.2 \reimp

Definition at line 3461 of file qlistview.cpp.

References d, QSize::height(), initViewItemOption(), QVariant::isValid(), QSize::isValid(), isWrapping, property, qMax(), qMin(), QSize::setHeight(), QVariant::toInt(), uniformItemSizes, QAbstractItemView::viewportSizeHint(), and QSize::width().

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◆ visualRect()

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

overridevirtual

\reimp

Implements QAbstractItemView.

Definition at line 522 of file qlistview.cpp.

References d, and rectForIndex().

Referenced by indexAt(), paintEvent(), scrollTo(), QListWidget::visualItemRect(), and visualRegionForSelection().

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◆ visualRegionForSelection()

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

overrideprotectedvirtual

\reimp

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

Implements QAbstractItemView.

Definition at line 1479 of file qlistview.cpp.

References d, IconMode, QRect::intersects(), parent, rect, selection, and visualRect().

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◆ wordWrap()

bool QListView::wordWrap ( ) const

Definition at line 1679 of file qlistview.cpp.

References d.

Friends And Related Symbol Documentation

◆ QCommonListViewBase

friend class QCommonListViewBase

friend

Definition at line 161 of file qlistview.h.

Property Documentation

◆ batchSize

QListView::batchSize

readwrite

the number of items laid out in each batch if \l layoutMode is set to \l Batched

The default value is 100.

Since: 4.2

Definition at line 167 of file qlistview.h.

Referenced by setBatchSize().

◆ flow

QListView::flow

readwrite

which direction the items layout should flow.

If this property is \l LeftToRight, the items will be laid out left to right. If the \l isWrapping property is true, the layout will wrap when it reaches the right side of the visible area. If this property is \l TopToBottom, the items will be laid out from the top of the visible area, wrapping when it reaches the bottom.

Setting this property when the view is visible will cause the items to be laid out again.

By default, this property is set to \l TopToBottom.

See also: viewMode

Definition at line 167 of file qlistview.h.

Referenced by paintEvent(), setFlow(), and setItemAlignment().

◆ gridSize

QListView::gridSize

readwrite

the size of the layout grid

This property is the size of the grid in which the items are laid out. The default is an empty size which means that there is no grid and the layout is not done in a grid. Setting this property to a non-empty size switches on the grid layout. (When a grid layout is in force the \l spacing property is ignored.)

Setting this property when the view is visible will cause the items to be laid out again.

See also: viewMode

Definition at line 167 of file qlistview.h.

Referenced by setSelection().

◆ isWrapping

QListView::isWrapping

readwrite

whether the items layout should wrap.

This property holds whether the layout should wrap when there is no more space in the visible area. The point at which the layout wraps depends on the \l flow property.

Setting this property when the view is visible will cause the items to be laid out again.

By default, this property is false.

See also: viewMode

Definition at line 167 of file qlistview.h.

Referenced by setItemAlignment(), and viewportSizeHint().

◆ itemAlignment

QListView::itemAlignment

readwrite

the alignment of each item in its cell

Since: 5.12

This is only supported in ListMode with TopToBottom flow and with wrapping enabled. The default alignment is 0, which means that an item fills its cell entirely.

Definition at line 167 of file qlistview.h.

◆ layoutMode

QListView::layoutMode

readwrite

determines whether the layout of items should happen immediately or be delayed.

This property holds the layout mode for the items. When the mode is \l SinglePass (the default), the items are laid out all in one go. When the mode is \l Batched, the items are laid out in batches of \l batchSize items, while processing events. This makes it possible to instantly view and interact with the visible items while the rest are being laid out.

See also: viewMode

Definition at line 167 of file qlistview.h.

Referenced by doItemsLayout().

◆ modelColumn

QListView::modelColumn

readwrite

the column in the model that is visible

By default, this property contains 0, indicating that the first column in the model will be shown.

Definition at line 167 of file qlistview.h.

◆ movement

QListView::movement

readwrite

whether the items can be moved freely, are snapped to a grid, or cannot be moved at all.

This property determines how the user can move the items in the view. \l Static means that the items can't be moved by the user. \l Free means that the user can drag and drop the items to any position in the view. \l Snap means that the user can drag and drop the items, but only to the positions in a notional grid signified by the gridSize property.

Setting this property when the view is visible will cause the items to be laid out again.

By default, this property is set to \l Static.

See also: gridSize, resizeMode, viewMode

Definition at line 167 of file qlistview.h.

Referenced by setMovement().

◆ resizeMode

QListView::resizeMode

readwrite

whether the items are laid out again when the view is resized.

If this property is \l Adjust, the items will be laid out again when the view is resized. If the value is \l Fixed, the items will not be laid out when the view is resized.

By default, this property is set to \l Fixed.

See also: movement, gridSize, viewMode

Definition at line 167 of file qlistview.h.

◆ selectionRectVisible

QListView::selectionRectVisible

readwrite

if the selection rectangle should be visible

Since: 4.3

If this property is true then the selection rectangle is visible; otherwise it will be hidden.

Note: The selection rectangle will only be visible if the selection mode is in a mode where more than one item can be selected; i.e., it will not draw a selection rectangle if the selection mode is QAbstractItemView::SingleSelection.

By default, this property is false.

Definition at line 167 of file qlistview.h.

◆ spacing

QListView::spacing

readwrite

the space around the items in the layout

This property is the size of the empty space that is padded around an item in the layout.

Setting this property when the view is visible will cause the items to be laid out again.

By default, this property contains a value of 0.

See also: viewMode

Definition at line 167 of file qlistview.h.

Referenced by QComboBoxPrivateContainer::spacing().

◆ uniformItemSizes

QListView::uniformItemSizes

readwrite

whether all items in the listview have the same size

Since: 4.1

This property should only be set to true if it is guaranteed that all items in the view have the same size. This enables the view to do some optimizations for performance purposes.

By default, this property is false.

Definition at line 167 of file qlistview.h.

Referenced by viewportSizeHint().

◆ viewMode

QListView::viewMode

readwrite

the view mode of the QListView.

This property will change the other unset properties to conform with the set view mode. QListView-specific properties that have already been set will not be changed, unless clearPropertyFlags() has been called.

Setting the view mode will enable or disable drag and drop based on the selected movement. For ListMode, the default movement is \l Static (drag and drop disabled); for IconMode, the default movement is \l Free (drag and drop enabled).

See also: isWrapping, spacing, gridSize, flow, movement, resizeMode

Definition at line 167 of file qlistview.h.

Referenced by setItemAlignment().

◆ wordWrap

QListView::wordWrap

readwrite

the item text word-wrapping policy

Since: 4.2

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.

Please note that even if wrapping is enabled, the cell will not be expanded to make room for the text. It will print ellipsis for text that cannot be shown, according to the view's \l{QAbstractItemView::}{textElideMode}.

Definition at line 167 of file qlistview.h.

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

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

Public Types

Signals

Public Member Functions

Protected Member Functions

Properties

Friends

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ Flow

◆ LayoutMode

◆ Movement

◆ ResizeMode

◆ ViewMode

Constructor & Destructor Documentation

◆ QListView() [1/2]

◆ ~QListView()

◆ QListView() [2/2]

Member Function Documentation

◆ batchSize()

◆ clearPropertyFlags()

◆ contentsSize()

◆ currentChanged()

◆ dataChanged()

◆ doItemsLayout()

◆ event()

◆ flow()

◆ gridSize()

◆ horizontalOffset()

◆ indexAt()

◆ indexesMoved

◆ initViewItemOption()

◆ isIndexHidden()

◆ isRowHidden()

◆ isSelectionRectVisible()

◆ isWrapping()

◆ itemAlignment()

◆ layoutMode()

◆ modelColumn()

◆ mouseMoveEvent()

◆ mouseReleaseEvent()

◆ moveCursor()

◆ movement()

◆ paintEvent()

◆ rectForIndex()

◆ reset()

◆ resizeContents()

◆ resizeEvent()

◆ resizeMode()

◆ rowsAboutToBeRemoved()

◆ rowsInserted()

◆ scrollContentsBy()

◆ scrollTo()

◆ selectedIndexes()

◆ selectionChanged()

◆ setBatchSize()

◆ setFlow()

◆ setGridSize()

◆ setItemAlignment()

◆ setLayoutMode()

◆ setModelColumn()

◆ setMovement()

◆ setPositionForIndex()

◆ setResizeMode()

◆ setRootIndex()

◆ setRowHidden()

◆ setSelection()

◆ setSelectionRectVisible()

◆ setSpacing()

◆ setUniformItemSizes()

◆ setViewMode()

◆ setWordWrap()

◆ setWrapping()

◆ spacing()

◆ timerEvent()

◆ uniformItemSizes()

◆ updateGeometries()

◆ verticalOffset()

◆ viewMode()

◆ viewportSizeHint()