#include <qquickdrag_p_p.h>

Inheritance diagram for QQuickDragAttachedPrivate:

Collaboration diagram for QQuickDragAttachedPrivate:

Public Member Functions
	QQuickDragAttachedPrivate ()

void	itemGeometryChanged (QQuickItem *, QQuickGeometryChange, const QRectF &) override
	\qmltype Drag \instantiates QQuickDrag \inqmlmodule QtQuick

void	itemParentChanged (QQuickItem , QQuickItem parent) override

void	updatePosition ()

void	restartDrag ()

void	deliverEnterEvent ()

void	deliverMoveEvent ()

void	deliverLeaveEvent ()

void	deliverEvent (QQuickWindow window, QEvent event)

void	start (Qt::DropActions supportedActions)

Qt::DropAction	startDrag (Qt::DropActions supportedActions)

void	setTarget (QQuickItem *item)

QMimeData *	createMimeData () const
	\qmlattachedsignal QtQuick::Drag::dragStarted()

Public Member Functions inherited from QObjectPrivate
void	ensureExtraData ()

	QObjectPrivate (int version=QObjectPrivateVersion)

virtual	~QObjectPrivate ()

void	deleteChildren ()

void	clearBindingStorage ()

void	checkForIncompatibleLibraryVersion (int version) const

void	setParent_helper (QObject *)

void	moveToThread_helper ()

void	setThreadData_helper (QThreadData currentData, QThreadData targetData, QBindingStatus *status)

void	_q_reregisterTimers (void *pointer)

bool	isSender (const QObject receiver, const char signal) const

QObjectList	receiverList (const char *signal) const

QObjectList	senderList () const

void	ensureConnectionData ()

void	addConnection (int signal, Connection *c)

int	signalIndex (const char signalName, const QMetaObject *meta=nullptr) const

bool	isSignalConnected (uint signalIdx, bool checkDeclarative=true) const

bool	maybeSignalConnected (uint signalIndex) const

bool	isDeclarativeSignalConnected (uint signalIdx) const

void	connectNotify (const QMetaMethod &signal)

void	disconnectNotify (const QMetaMethod &signal)

void	reinitBindingStorageAfterThreadMove ()

virtual std::string	flagsForDumping () const

QtPrivate::QPropertyAdaptorSlotObject *	getPropertyAdaptorSlotObject (const QMetaProperty &property)

Public Member Functions inherited from QObjectData
	QObjectData ()=default

virtual	~QObjectData ()=0

QMetaObject *	dynamicMetaObject () const

Public Member Functions inherited from QQuickItemChangeListener
virtual	~QQuickItemChangeListener ()

virtual void	itemGeometryChanged (QQuickItem *, QQuickGeometryChange, const QRectF &)

virtual void	itemSiblingOrderChanged (QQuickItem *)

virtual void	itemVisibilityChanged (QQuickItem *)

virtual void	itemEnabledChanged (QQuickItem *)

virtual void	itemOpacityChanged (QQuickItem *)

virtual void	itemDestroyed (QQuickItem *)

virtual void	itemChildAdded (QQuickItem , QQuickItem )

virtual void	itemChildRemoved (QQuickItem , QQuickItem )

virtual void	itemParentChanged (QQuickItem , QQuickItem )

virtual void	itemRotationChanged (QQuickItem *)

virtual void	itemImplicitWidthChanged (QQuickItem *)

virtual void	itemImplicitHeightChanged (QQuickItem *)

virtual void	itemFocusChanged (QQuickItem *, Qt::FocusReason)

virtual QQuickAnchorsPrivate *	anchorPrivate ()

Static Public Member Functions
static QQuickDragAttachedPrivate *	get (QQuickDragAttached *attached)

Static Public Member Functions inherited from QObjectPrivate
static bool	removeConnection (Connection *c)

static QObjectPrivate *	get (QObject *o)

static const QObjectPrivate *	get (const QObject *o)

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

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

static QMetaObject::Connection	connectImpl (const QObject sender, int signal_index, const QObject receiver, void *slot, QtPrivate::QSlotObjectBase slotObj, int type, const int types, const QMetaObject senderMetaObject)

static QMetaObject::Connection	connect (const QObject sender, int signal_index, QtPrivate::QSlotObjectBase slotObj, Qt::ConnectionType type)

static QMetaObject::Connection	connect (const QObject sender, int signal_index, const QObject receiver, QtPrivate::QSlotObjectBase *slotObj, Qt::ConnectionType type)

static bool	disconnect (const QObject sender, int signal_index, void *slot)

static bool	disconnect (const QObject sender, int signal_index, const QObject receiver, void **slot)

Public Attributes
QQuickDragGrabber	dragGrabber

QPointer< QObject >	source

QPointer< QObject >	target

QPointer< QQuickWindow >	window

QQuickItem *	attachedItem

QQuickDragMimeData *	mimeData

Qt::DropAction	proposedAction

Qt::DropActions	supportedActions

bool	active: 1

bool	listening: 1

bool	inEvent: 1

bool	dragRestarted: 1

bool	itemMoved: 1

bool	eventQueued: 1

bool	overrideActions: 1

QPointF	hotSpot

QUrl	imageSource

QQuickPixmap	pixmapLoader

QStringList	keys

QVariantMap	externalMimeData

QQuickDrag::DragType	dragType

Public Attributes inherited from QObjectPrivate
ExtraData *	extraData

QAtomicPointer< QThreadData >	threadData

QAtomicPointer< ConnectionData >	connections

union {

QObject * currentChildBeingDeleted

QAbstractDeclarativeData * declarativeData

};

QAtomicPointer< QtSharedPointer::ExternalRefCountData >	sharedRefcount

Public Attributes inherited from QObjectData
QObject *	q_ptr

QObject *	parent

QObjectList	children

uint	isWidget: 1

uint	blockSig: 1

uint	wasDeleted: 1

uint	isDeletingChildren: 1

uint	sendChildEvents: 1

uint	receiveChildEvents: 1

uint	isWindow: 1

uint	deleteLaterCalled: 1

uint	isQuickItem: 1

uint	willBeWidget: 1

uint	wasWidget: 1

uint	unused: 21

QAtomicInt	postedEvents

QDynamicMetaObjectData *	metaObject

QBindingStorage	bindingStorage

Additional Inherited Members
Public Types inherited from QObjectPrivate
typedef void(*	StaticMetaCallFunction) (QObject , QMetaObject::Call, int, void *)

using	ConnectionDataPointer = QExplicitlySharedDataPointer< ConnectionData >

Detailed Description

Definition at line 32 of file qquickdrag_p_p.h.

Constructor & Destructor Documentation

◆ QQuickDragAttachedPrivate()

QQuickDragAttachedPrivate::QQuickDragAttachedPrivate ( )

inline

Definition at line 42 of file qquickdrag_p_p.h.

Member Function Documentation

◆ createMimeData()

QMimeData * QQuickDragAttachedPrivate::createMimeData ( ) const

\qmlattachedsignal QtQuick::Drag::dragStarted()

This signal is emitted when a drag is started with the \l startDrag() method or when it is started automatically using the \l dragType property.

\qmlattachedsignal QtQuick::Drag::dragFinished(DropAction dropAction)

This signal is emitted when a drag finishes and the drag was started with the \l startDrag() method or started automatically using the \l dragType property.

dropAction holds the action accepted by the target item.

See also: drop()

Definition at line 671 of file qquickdrag.cpp.

References QMap< Key, T >::asKeyValueRange(), QByteArray::constData(), QListSpecialMethodsBase< T >::contains(), QStringEncoder::encode(), error, externalMimeData, QImageWriter::imageFormatsForMimeType(), QUrl::isValid(), QStringConverter::isValid(), mimeData, mimeType, Q_FALLTHROUGH, qmlWarning(), QList< T >::reserve(), QMimeData::setData(), QMimeData::setHtml(), QMimeData::setImageData(), QMimeData::setText(), QMimeData::setUrls(), QImageWriter::supportedMimeTypes(), text, QList< T >::toList(), QString::toUtf8(), url, and QImageWriter::write().

Referenced by startDrag().

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◆ deliverEnterEvent()

void QQuickDragAttachedPrivate::deliverEnterEvent ( )

Definition at line 102 of file qquickdrag.cpp.

References attachedItem, deliverEvent(), dragRestarted, hotSpot, itemMoved, keys, QQuickItem::mapToScene(), mimeData, Qt::NoButton, Qt::NoModifier, overrideActions, proposedAction, QQuickDropEventEx::setProposedAction(), source, supportedActions, QPointF::toPoint(), window, and QQuickItem::window().

Referenced by start().

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◆ deliverEvent()

void QQuickDragAttachedPrivate::deliverEvent	(	QQuickWindow *	window,
		QEvent *	event
	)

Definition at line 148 of file qquickdrag.cpp.

References QQuickWindowPrivate::deliveryAgentPrivate(), dragGrabber, QQuickWindowPrivate::get(), inEvent, Q_ASSERT, and window.

Referenced by deliverEnterEvent(), deliverLeaveEvent(), and deliverMoveEvent().

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◆ deliverLeaveEvent()

void QQuickDragAttachedPrivate::deliverLeaveEvent ( )

Definition at line 139 of file qquickdrag.cpp.

References deliverEvent(), and window.

Referenced by startDrag().

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◆ deliverMoveEvent()

void QQuickDragAttachedPrivate::deliverMoveEvent ( )

Definition at line 122 of file qquickdrag.cpp.

References attachedItem, deliverEvent(), dragGrabber, emit, hotSpot, itemMoved, QQuickItem::mapToScene(), mimeData, Qt::NoButton, Qt::NoModifier, proposedAction, QQuickDropEventEx::setProposedAction(), QQuickDragGrabber::target(), QPointF::toPoint(), and window.

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◆ get()

static QQuickDragAttachedPrivate * QQuickDragAttachedPrivate::get ( QQuickDragAttached * attached )

inlinestatic

Definition at line 39 of file qquickdrag_p_p.h.

References QObjectPrivate::get().

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◆ itemGeometryChanged()

void QQuickDragAttachedPrivate::itemGeometryChanged	(	QQuickItem *	,
		QQuickGeometryChange	change,
		const QRectF &
	)

overridevirtual

\qmltype Drag \instantiates QQuickDrag \inqmlmodule QtQuick

For specifying drag and drop events for moved Items.

Using the Drag attached property, any Item can be made a source of drag and drop events within a scene.

When a drag is \l active on an item, any change in that item's position will generate a drag event that will be sent to any DropArea that intersects with the new position of the item. Other items which implement drag and drop event handlers can also receive these events.

The following snippet shows how an item can be dragged with a MouseArea. However, dragging is not limited to mouse drags; anything that can move an item can generate drag events, including touch events, animations and bindings.

import QtQuick
 
Item {
    width: 200; height: 200
 
    DropArea {
        x: 75; y: 75
        width: 50; height: 50
 
        Rectangle {
            anchors.fill: parent
            color: "green"
 
            visible: parent.containsDrag
        }
    }
 
    Rectangle {
        x: 10; y: 10
        width: 20; height: 20
        color: "red"
 
        Drag.active: dragArea.drag.active
        Drag.hotSpot.x: 10
        Drag.hotSpot.y: 10
 
        MouseArea {
            id: dragArea
            anchors.fill: parent
 
            drag.target: parent
        }
    }
}

A drag can be terminated either by canceling it with Drag.cancel() or setting Drag.active to false, or it can be terminated with a drop event by calling Drag.drop(). If the drop event is accepted, Drag.drop() will return the \l {supportedActions}{drop action} chosen by the recipient of the event, otherwise it will return Qt.IgnoreAction.