1	// Copyright (C) 2020 The Qt Company Ltd.
2	// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4	#include "qevent.h"
5
6	#include "qcursor.h"
7	#include "private/qguiapplication_p.h"
8	#include "private/qinputdevice_p.h"
9	#include "private/qpointingdevice_p.h"
10	#include "qpa/qplatformintegration.h"
11	#include "private/qevent_p.h"
12	#include "private/qeventpoint_p.h"
13
14	#include "qfile.h"
15	#include "qhashfunctions.h"
16	#include "qmetaobject.h"
17	#include "qmimedata.h"
18	#include "qevent_p.h"
19	#include "qmath.h"
20	#include "qloggingcategory.h"
21	#include "qpointer.h"
22
23	#if QT_CONFIG(draganddrop)
24	#include <qpa/qplatformdrag.h>
25	#include <private/qdnd_p.h>
26	#endif
27
28	#if QT_CONFIG(shortcut)
29	#include <private/qshortcut_p.h>
30	#endif
31
32	#include <private/qdebug_p.h>
33
34	#define Q_IMPL_POINTER_EVENT(Class) \
35	Class::Class(const Class &) = default; \
36	Class::~Class() = default; \
37	Class* Class::clone() const \
38	{ \
39	auto c = new Class(*this); \
40	for (auto &point : c->m_points) \
41	QMutableEventPoint::detach(point); \
42	QEvent *e = c; \
43	/* check that covariant return is safe to add */ \
44	Q_ASSERT(reinterpret_cast<quintptr>(c) == reinterpret_cast<quintptr>(e)); \
45	return c; \
46	}
47
48
49
50	QT_BEGIN_NAMESPACE
51
52	static_assert(sizeof(QMutableTouchEvent) == sizeof(QTouchEvent));
53	static_assert(sizeof(QMutableSinglePointEvent) == sizeof(QSinglePointEvent));
54	static_assert(sizeof(QMouseEvent) == sizeof(QSinglePointEvent));
55	static_assert(sizeof(QVector2D) == sizeof(quint64));
56
57	/*!
58	\class QEnterEvent
59	\ingroup events
60	\inmodule QtGui
61
62	\brief The QEnterEvent class contains parameters that describe an enter event.
63
64	Enter events occur when the mouse cursor enters a window or a widget.
65
66	\since 5.0
67	*/
68
69	/*!
70	Constructs an enter event object originating from \a device.
71
72	The points \a localPos, \a scenePos and \a globalPos specify the
73	mouse cursor's position relative to the receiving widget or item,
74	window, and screen or desktop, respectively.
75	*/
76	QEnterEvent::QEnterEvent(const QPointF &localPos, const QPointF &scenePos, const QPointF &globalPos, const QPointingDevice *device)
77	: QSinglePointEvent(QEvent::Enter, device, localPos, scenePos, globalPos, Qt::NoButton, Qt::NoButton, Qt::NoModifier)
78	{
79	}
80
81	Q_IMPL_POINTER_EVENT(QEnterEvent)
82
83	/*!
84	\fn QPoint QEnterEvent::globalPos() const
85	\deprecated [6.0] Use globalPosition() instead.
86
87	Returns the global position of the mouse cursor \e{at the time of the event}.
88	*/
89	/*!
90	\fn int QEnterEvent::globalX() const
91	\deprecated [6.0] Use globalPosition().x() instead.
92
93	Returns the global position on the X-axis of the mouse cursor \e{at the time of the event}.
94	*/
95	/*!
96	\fn int QEnterEvent::globalY() const
97	\deprecated [6.0] Use globalPosition().y() instead.
98
99	Returns the global position on the Y-axis of the mouse cursor \e{at the time of the event}.
100	*/
101	/*!
102	\fn QPointF QEnterEvent::localPos() const
103	\deprecated [6.0] Use position() instead.
104
105	Returns the mouse cursor's position relative to the receiving widget.
106	*/
107	/*!
108	\fn QPoint QEnterEvent::pos() const
109	\deprecated [6.0] Use position().toPoint() instead.
110
111	Returns the position of the mouse cursor relative to the receiving widget.
112	*/
113	/*!
114	\fn QPointF QEnterEvent::screenPos() const
115	\deprecated [6.0] Use globalPosition() instead.
116
117	Returns the position of the mouse cursor relative to the receiving screen.
118	*/
119	/*!
120	\fn QPointF QEnterEvent::windowPos() const
121	\deprecated [6.0] Use scenePosition() instead.
122
123	Returns the position of the mouse cursor relative to the receiving window.
124	*/
125	/*!
126	\fn int QEnterEvent::x() const
127	\deprecated [6.0] Use position().x() instead.
128
129	Returns the x position of the mouse cursor relative to the receiving widget.
130	*/
131	/*!
132	\fn int QEnterEvent::y() const
133	\deprecated [6.0] Use position().y() instead.
134
135	Returns the y position of the mouse cursor relative to the receiving widget.
136	*/
137
138	/*!
139	\class QInputEvent
140	\ingroup events
141	\inmodule QtGui
142
143	\brief The QInputEvent class is the base class for events that
144	describe user input.
145	*/
146
147	/*!
148	\internal
149	*/
150	QInputEvent::QInputEvent(Type type, const QInputDevice *dev, Qt::KeyboardModifiers modifiers)
151	: QEvent(type, QEvent::InputEventTag{}), m_dev(dev), m_modState(modifiers), m_reserved(0)
152	{}
153
154	/*!
155	\internal
156	*/
157	QInputEvent::QInputEvent(QEvent::Type type, QEvent::PointerEventTag, const QInputDevice *dev, Qt::KeyboardModifiers modifiers)
158	: QEvent(type, QEvent::PointerEventTag{}), m_dev(dev), m_modState(modifiers), m_reserved(0)
159	{}
160
161	/*!
162	\internal
163	*/
164	QInputEvent::QInputEvent(QEvent::Type type, QEvent::SinglePointEventTag, const QInputDevice *dev, Qt::KeyboardModifiers modifiers)
165	: QEvent(type, QEvent::SinglePointEventTag{}), m_dev(dev), m_modState(modifiers), m_reserved(0)
166	{}
167
168	Q_IMPL_EVENT_COMMON(QInputEvent)
169
170	/*!
171	\fn QInputDevice *QInputEvent::device() const
172	\since 6.0
173
174	Returns the source device that generated the original event.
175
176	In case of a synthesized event, for example a mouse event that was
177	generated from a touch event, \c device() continues to return the touchscreen
178	device, so that you can tell that it did not come from an actual mouse.
179	Thus \c {mouseEvent.source()->type() != QInputDevice::DeviceType::Mouse}
180	is one possible replacement for the Qt 5 expression
181	\c {mouseEvent.source() == Qt::MouseEventSynthesizedByQt}.
182
183	\sa QPointerEvent::pointingDevice()
184	*/
185
186	/*!
187	\fn QInputDevice::DeviceType QInputEvent::deviceType() const
188
189	Returns the type of device that generated the event.
190	*/
191
192	/*!
193	\fn Qt::KeyboardModifiers QInputEvent::modifiers() const
194
195	Returns the keyboard modifier flags that existed immediately
196	before the event occurred.
197
198	\sa QGuiApplication::keyboardModifiers()
199	*/
200
201	/*! \fn void QInputEvent::setModifiers(Qt::KeyboardModifiers modifiers)
202
203	\internal
204
205	Sets the keyboard modifiers flags for this event.
206	*/
207
208	/*!
209	\fn quint64 QInputEvent::timestamp() const
210
211	Returns the window system's timestamp for this event.
212	It will normally be in milliseconds since some arbitrary point
213	in time, such as the time when the system was started.
214	*/
215
216	/*! \fn void QInputEvent::setTimestamp(quint64 atimestamp)
217
218	\internal
219
220	Sets the timestamp for this event.
221	*/
222
223	/*!
224	\class QPointerEvent
225	\since 6.0
226	\inmodule QtGui
227
228	\brief A base class for pointer events.
229	*/
230
231	/*!
232	\fn qsizetype QPointerEvent::pointCount() const
233
234	Returns the number of points in this pointer event.
235	*/
236
237	/*!
238	Returns a QEventPoint reference for the point at index \a i.
239	*/
240	QEventPoint &QPointerEvent::point(qsizetype i)
241	{
242	return m_points[i];
243	}
244
245	/*!
246	\fn const QList<QEventPoint> &QPointerEvent::points() const
247
248	Returns a list of points in this pointer event.
249	*/
250
251	/*!
252	\fn QPointingDevice::PointerType QPointerEvent::pointerType() const
253
254	Returns the type of point that generated the event.
255	*/
256
257	/*!
258	\internal
259	*/
260	QPointerEvent::QPointerEvent(QEvent::Type type, const QPointingDevice *dev,
261	Qt::KeyboardModifiers modifiers, const QList<QEventPoint> &points)
262	: QInputEvent(type, QEvent::PointerEventTag{}, dev, modifiers), m_points(points)
263	{
264	}
265
266	/*!
267	\internal
268	*/
269	QPointerEvent::QPointerEvent(QEvent::Type type, QEvent::SinglePointEventTag, const QInputDevice *dev, Qt::KeyboardModifiers modifiers)
270	: QInputEvent(type, QEvent::SinglePointEventTag{}, dev, modifiers)
271	{
272	}
273
274	Q_IMPL_POINTER_EVENT(QPointerEvent);
275
276	/*!
277	Returns the point whose \l {QEventPoint::id()}{id} matches the given \a id,
278	or \c nullptr if no such point is found.
279	*/
280	QEventPoint *QPointerEvent::pointById(int id)
281	{
282	for (auto &p : m_points) {
283	if (p.id() == id)
284	return &p;
285	}
286	return nullptr;
287	}
288
289	/*!
290	Returns \c true if every point in points() has either an exclusiveGrabber()
291	or one or more passiveGrabbers().
292	*/
293	bool QPointerEvent::allPointsGrabbed() const
294	{
295	for (const auto &p : points()) {
296	if (!exclusiveGrabber(point: p) && passiveGrabbers(point: p).isEmpty())
297	return false;
298	}
299	return true;
300	}
301
302	/*!
303	Returns \c true if isPointAccepted() is \c true for every point in
304	points(); otherwise \c false.
305	*/
306	bool QPointerEvent::allPointsAccepted() const
307	{
308	for (const auto &p : points()) {
309	if (!p.isAccepted())
310	return false;
311	}
312	return true;
313	}
314
315	/*!
316	\reimp
317	*/
318	void QPointerEvent::setAccepted(bool accepted)
319	{
320	QEvent::setAccepted(accepted);
321	for (auto &p : m_points)
322	p.setAccepted(accepted);
323	}
324
325	/*!
326	Returns the source device from which this event originates.
327
328	This is the same as QInputEvent::device() but typecast for convenience.
329	*/
330	const QPointingDevice *QPointerEvent::pointingDevice() const
331	{
332	return static_cast<const QPointingDevice *>(m_dev);
333	}
334
335	/*! \internal
336	Sets the timestamp for this event and its points().
337	*/
338	void QPointerEvent::setTimestamp(quint64 timestamp)
339	{
340	QInputEvent::setTimestamp(timestamp);
341	for (auto &p : m_points)
342	QMutableEventPoint::setTimestamp(p, t: timestamp);
343	}
344
345	/*!
346	Returns the object which has been set to receive all future update events
347	and the release event containing the given \a point.
348
349	It's mainly for use in Qt Quick at this time.
350	*/
351	QObject *QPointerEvent::exclusiveGrabber(const QEventPoint &point) const
352	{
353	Q_ASSERT(pointingDevice());
354	auto persistentPoint = QPointingDevicePrivate::get(q: pointingDevice())->queryPointById(id: point.id());
355	if (Q_UNLIKELY(!persistentPoint)) {
356	qWarning() << "point is not in activePoints" << point;
357	return nullptr;
358	}
359	return persistentPoint->exclusiveGrabber;
360	}
361
362	/*!
363	Informs the delivery logic that the given \a exclusiveGrabber is to
364	receive all future update events and the release event containing
365	the given \a point, and that delivery to other items can be skipped.
366
367	It's mainly for use in Qt Quick at this time.
368	*/
369	void QPointerEvent::setExclusiveGrabber(const QEventPoint &point, QObject *exclusiveGrabber)
370	{
371	Q_ASSERT(pointingDevice());
372	auto devPriv = QPointingDevicePrivate::get(q: const_cast<QPointingDevice *>(pointingDevice()));
373	devPriv->setExclusiveGrabber(event: this, point, exclusiveGrabber);
374	}
375
376	/*!
377	Returns the list of objects that have been requested to receive all
378	future update events and the release event containing the given \a point.
379
380	It's only for use by \l {Qt Quick Input Handlers}.
381
382	\sa QPointerEvent::addPassiveGrabber()
383	*/
384	QList<QPointer<QObject> > QPointerEvent::passiveGrabbers(const QEventPoint &point) const
385	{
386	Q_ASSERT(pointingDevice());
387	auto persistentPoint = QPointingDevicePrivate::get(q: pointingDevice())->queryPointById(id: point.id());
388	if (Q_UNLIKELY(!persistentPoint)) {
389	qWarning() << "point is not in activePoints" << point;
390	return {};
391	}
392	return persistentPoint->passiveGrabbers;
393	}
394
395	/*!
396	Informs the delivery logic that the given \a grabber is to receive all
397	future update events and the release event containing the given \a point,
398	regardless where else those events may be delivered.
399
400	It's only for use by \l {Qt Quick Input Handlers}.
401
402	Returns \c false if \a grabber was already added, \c true otherwise.
403	*/
404	bool QPointerEvent::addPassiveGrabber(const QEventPoint &point, QObject *grabber)
405	{
406	Q_ASSERT(pointingDevice());
407	auto devPriv = QPointingDevicePrivate::get(q: const_cast<QPointingDevice *>(pointingDevice()));
408	return devPriv->addPassiveGrabber(event: this, point, grabber);
409	}
410
411	/*!
412	Removes the passive \a grabber from the given \a point if it was previously added.
413	Returns \c true if it had been a passive grabber before, \c false if not.
414
415	It's only for use by \l {Qt Quick Input Handlers}.
416
417	\sa QPointerEvent::addPassiveGrabber()
418	*/
419	bool QPointerEvent::removePassiveGrabber(const QEventPoint &point, QObject *grabber)
420	{
421	Q_ASSERT(pointingDevice());
422	auto devPriv = QPointingDevicePrivate::get(q: const_cast<QPointingDevice *>(pointingDevice()));
423	return devPriv->removePassiveGrabber(event: this, point, grabber);
424	}
425
426	/*!
427	Removes all passive grabbers from the given \a point.
428
429	It's only for use by \l {Qt Quick Input Handlers}.
430
431	\sa QPointerEvent::addPassiveGrabber()
432	*/
433	void QPointerEvent::clearPassiveGrabbers(const QEventPoint &point)
434	{
435	Q_ASSERT(pointingDevice());
436	auto devPriv = QPointingDevicePrivate::get(q: const_cast<QPointingDevice *>(pointingDevice()));
437	devPriv->clearPassiveGrabbers(event: this, point);
438	}
439
440	/*!
441	\class QSinglePointEvent
442	\since 6.0
443	\inmodule QtGui
444
445	\brief A base class for pointer events containing a single point, such as
446	mouse events.
447	*/
448
449	/*! \fn Qt::MouseButton QSinglePointEvent::button() const
450
451	Returns the button that caused the event.
452
453	The returned value is always Qt::NoButton for mouse move events, as
454	well as \l TabletMove, \l TabletEnterProximity, and
455	\l TabletLeaveProximity events.
456
457	\sa buttons()
458	*/
459
460	/*! \fn Qt::MouseButtons QSinglePointEvent::buttons() const
461
462	Returns the button state when the event was generated.
463
464	The button state is a combination of Qt::LeftButton, Qt::RightButton,
465	and Qt::MiddleButton using the OR operator.
466
467	For mouse move or \l TabletMove events, this is all buttons that are
468	pressed down.
469
470	For mouse press, double click, or \l TabletPress events, this includes
471	the button that caused the event.
472
473	For mouse release or \l TabletRelease events, this excludes the button
474	that caused the event.
475
476	\sa button()
477	*/
478
479	/*! \fn QPointF QSinglePointEvent::position() const
480
481	Returns the position of the point in this event, relative to the widget or
482	item that received the event.
483
484	If you move your widgets around in response to mouse events, use
485	globalPosition() instead.
486
487	\sa globalPosition()
488	*/
489
490	/*! \fn QPointF QSinglePointEvent::scenePosition() const
491
492	Returns the position of the point in this event, relative to the window or
493	scene.
494
495	\sa QEventPoint::scenePosition
496	*/
497
498	/*! \fn QPointF QSinglePointEvent::globalPosition() const
499
500	Returns the position of the point in this event on the screen or virtual
501	desktop.
502
503	\note The global position of a mouse pointer is recorded \e{at the time
504	of the event}. This is important on asynchronous window systems
505	such as X11; whenever you move your widgets around in response to
506	mouse events, globalPosition() can differ a lot from the current
507	cursor position returned by QCursor::pos().
508
509	\sa position()
510	*/
511
512	/*!
513	\internal
514	*/
515	QSinglePointEvent::QSinglePointEvent(QEvent::Type type, const QPointingDevice *dev,
516	const QPointF &localPos, const QPointF &scenePos, const QPointF &globalPos,
517	Qt::MouseButton button, Qt::MouseButtons buttons,
518	Qt::KeyboardModifiers modifiers, Qt::MouseEventSource source)
519	: QPointerEvent(type, QEvent::SinglePointEventTag{}, dev, modifiers),
520	m_button(button),
521	m_mouseState(buttons),
522	m_source(source),
523	m_reserved(0), m_reserved2(0),
524	m_doubleClick(false), m_phase(0), m_invertedScrolling(0)
525	{
526	bool isPress = (button != Qt::NoButton && (button | buttons) == buttons);
527	bool isWheel = (type == QEvent::Type::Wheel);
528	auto devPriv = QPointingDevicePrivate::get(q: const_cast<QPointingDevice *>(pointingDevice()));
529	auto epd = devPriv->pointById(id: 0);
530	QEventPoint &p = epd->eventPoint;
531	Q_ASSERT(p.device() == dev);
532	// p is a reference to a non-detached instance that lives in QPointingDevicePrivate::activePoints.
533	// Update persistent info in that instance.
534	if (isPress || isWheel)
535	QMutableEventPoint::setGlobalLastPosition(p, arg: globalPos);
536	else
537	QMutableEventPoint::setGlobalLastPosition(p, arg: p.globalPosition());
538	QMutableEventPoint::setGlobalPosition(p, arg: globalPos);
539	if (isWheel && p.state() != QEventPoint::State::Updated)
540	QMutableEventPoint::setGlobalPressPosition(p, arg: globalPos);
541	if (type == MouseButtonDblClick)
542	QMutableEventPoint::setState(p, arg: QEventPoint::State::Stationary);
543	else if (button == Qt::NoButton || isWheel)
544	QMutableEventPoint::setState(p, arg: QEventPoint::State::Updated);
545	else if (isPress)
546	QMutableEventPoint::setState(p, arg: QEventPoint::State::Pressed);
547	else
548	QMutableEventPoint::setState(p, arg: QEventPoint::State::Released);
549	QMutableEventPoint::setScenePosition(p, arg: scenePos);
550	// Now detach, and update the detached instance with ephemeral state.
551	QMutableEventPoint::detach(p);
552	QMutableEventPoint::setPosition(p, arg: localPos);
553	m_points.append(t: p);
554	}
555
556	/*! \internal
557	Constructs a single-point event with the given \a point, which must be an instance
558	(or copy of one) that already exists in QPointingDevicePrivate::activePoints.
559	Unlike the other constructor, it does not modify the given \a point in any way.
560	This is useful when synthesizing a QMouseEvent from one point taken from a QTouchEvent, for example.
561
562	\sa QMutableSinglePointEvent()
563	*/
564	QSinglePointEvent::QSinglePointEvent(QEvent::Type type, const QPointingDevice *dev, const QEventPoint &point,
565	Qt::MouseButton button, Qt::MouseButtons buttons,
566	Qt::KeyboardModifiers modifiers, Qt::MouseEventSource source)
567	: QPointerEvent(type, QEvent::SinglePointEventTag{}, dev, modifiers),
568	m_button(button),
569	m_mouseState(buttons),
570	m_source(source),
571	m_reserved(0), m_reserved2(0),
572	m_doubleClick(false), m_phase(0), m_invertedScrolling(0)
573	{
574	m_points << point;
575	}
576
577	Q_IMPL_POINTER_EVENT(QSinglePointEvent)
578
579	/*!
580	Returns \c true if this event represents a \l {button()}{button} being pressed.
581	*/
582	bool QSinglePointEvent::isBeginEvent() const
583	{
584	// A double-click event does not begin a sequence: it comes after a press event,
585	// and while it tells which button caused the double-click, it doesn't represent
586	// a change of button state. So it's an update event.
587	return m_button != Qt::NoButton && m_mouseState.testFlag(flag: m_button)
588	&& type() != QEvent::MouseButtonDblClick;
589	}
590
591	/*!
592	Returns \c true if this event does not include a change in \l {buttons()}{button state}.
593	*/
594	bool QSinglePointEvent::isUpdateEvent() const
595	{
596	// A double-click event is an update event even though it tells which button
597	// caused the double-click, because a MouseButtonPress event was sent right before it.
598	return m_button == Qt::NoButton || type() == QEvent::MouseButtonDblClick;
599	}
600
601	/*!
602	Returns \c true if this event represents a \l {button()}{button} being released.
603	*/
604	bool QSinglePointEvent::isEndEvent() const
605	{
606	return m_button != Qt::NoButton && !m_mouseState.testFlag(flag: m_button);
607	}
608
609	/*!
610	\property QSinglePointEvent::exclusivePointGrabber
611	\brief the object that will receive future updates
612
613	The exclusive grabber is an object that has chosen to receive all future
614	update events and the release event containing the same point that this
615	event carries.
616
617	Setting the exclusivePointGrabber property is a convenience equivalent to:
618	\code
619	setExclusiveGrabber(points().first(), exclusiveGrabber);
620	\endcode
621	*/
622
623	/*!
624	\class QMouseEvent
625	\ingroup events
626	\inmodule QtGui
627
628	\brief The QMouseEvent class contains parameters that describe a mouse event.
629
630	Mouse events occur when a mouse button is pressed or released
631	inside a widget, or when the mouse cursor is moved.
632
633	Mouse move events will occur only when a mouse button is pressed
634	down, unless mouse tracking has been enabled with
635	QWidget::setMouseTracking().
636
637	Qt automatically grabs the mouse when a mouse button is pressed
638	inside a widget; the widget will continue to receive mouse events
639	until the last mouse button is released.
640
641	A mouse event contains a special accept flag that indicates
642	whether the receiver wants the event. You should call ignore() if
643	the mouse event is not handled by your widget. A mouse event is
644	propagated up the parent widget chain until a widget accepts it
645	with accept(), or an event filter consumes it.
646
647	\note If a mouse event is propagated to a \l{QWidget}{widget} for
648	which Qt::WA_NoMousePropagation has been set, that mouse event
649	will not be propagated further up the parent widget chain.
650
651	The state of the keyboard modifier keys can be found by calling the
652	\l{QInputEvent::modifiers()}{modifiers()} function, inherited from
653	QInputEvent.
654
655	The position() function gives the cursor position
656	relative to the widget or item that receives the mouse event.
657	If you move the widget as a result of the mouse event, use the
658	global position returned by globalPosition() to avoid a shaking motion.
659
660	The QWidget::setEnabled() function can be used to enable or
661	disable mouse and keyboard events for a widget.
662
663	Reimplement the QWidget event handlers, QWidget::mousePressEvent(),
664	QWidget::mouseReleaseEvent(), QWidget::mouseDoubleClickEvent(),
665	and QWidget::mouseMoveEvent() to receive mouse events in your own
666	widgets.
667
668	\sa QWidget::setMouseTracking(), QWidget::grabMouse(),
669	QCursor::pos()
670	*/
671
672	#if QT_DEPRECATED_SINCE(6, 4)
673	/*!
674	\deprecated [6.4] Use another constructor instead (global position is required).
675
676	Constructs a mouse event object originating from \a device.
677
678	The \a type parameter must be one of QEvent::MouseButtonPress,
679	QEvent::MouseButtonRelease, QEvent::MouseButtonDblClick,
680	or QEvent::MouseMove.
681
682	The \a localPos is the mouse cursor's position relative to the
683	receiving widget or item. The window position is set to the same value
684	as \a localPos.
685	The \a button that caused the event is given as a value from
686	the Qt::MouseButton enum. If the event \a type is
687	\l MouseMove, the appropriate button for this event is Qt::NoButton.
688	The mouse and keyboard states at the time of the event are specified by
689	\a buttons and \a modifiers.
690
691	The globalPosition() is initialized to QCursor::pos(), which may not
692	be appropriate. Use the other constructor to specify the global
693	position explicitly.
694	*/
695	QMouseEvent::QMouseEvent(Type type, const QPointF &localPos, Qt::MouseButton button,
696	Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers, const QPointingDevice *device)
697	: QSinglePointEvent(type, device, localPos, localPos,
698	#ifdef QT_NO_CURSOR
699	localPos,
700	#else
701	QCursor::pos(),
702	#endif
703	button, buttons, modifiers)
704	{
705	}
706	#endif
707
708	/*!
709	Constructs a mouse event object originating from \a device.
710
711	The \a type parameter must be QEvent::MouseButtonPress,
712	QEvent::MouseButtonRelease, QEvent::MouseButtonDblClick,
713	or QEvent::MouseMove.
714
715	The \a localPos is the mouse cursor's position relative to the
716	receiving widget or item. The cursor's position in screen coordinates is
717	specified by \a globalPos. The window position is set to the same value
718	as \a localPos. The \a button that caused the event is
719	given as a value from the \l Qt::MouseButton enum. If the event \a
720	type is \l MouseMove, the appropriate button for this event is
721	Qt::NoButton. \a buttons is the state of all buttons at the
722	time of the event, \a modifiers the state of all keyboard
723	modifiers.
724
725	*/
726	QMouseEvent::QMouseEvent(Type type, const QPointF &localPos, const QPointF &globalPos,
727	Qt::MouseButton button, Qt::MouseButtons buttons,
728	Qt::KeyboardModifiers modifiers, const QPointingDevice *device)
729	: QMouseEvent(type, localPos, localPos, globalPos, button, buttons, modifiers, device)
730	{
731	}
732
733	/*!
734	Constructs a mouse event object.
735
736	The \a type parameter must be QEvent::MouseButtonPress,
737	QEvent::MouseButtonRelease, QEvent::MouseButtonDblClick,
738	or QEvent::MouseMove.
739
740	The points \a localPos, \a scenePos and \a globalPos specify the
741	mouse cursor's position relative to the receiving widget or item,
742	window, and screen or desktop, respectively.
743
744	The \a button that caused the event is given as a value from the
745	\l Qt::MouseButton enum. If the event \a type is \l MouseMove,
746	the appropriate button for this event is Qt::NoButton. \a buttons
747	is the state of all buttons at the time of the event, \a modifiers
748	is the state of all keyboard modifiers.
749	*/
750	QMouseEvent::QMouseEvent(QEvent::Type type, const QPointF &localPos,
751	const QPointF &scenePos, const QPointF &globalPos,
752	Qt::MouseButton button, Qt::MouseButtons buttons,
753	Qt::KeyboardModifiers modifiers, const QPointingDevice *device)
754	: QSinglePointEvent(type, device, localPos, scenePos, globalPos, button, buttons, modifiers)
755	{
756	}
757
758	QMouseEvent::QMouseEvent(QEvent::Type type, const QPointF &localPos, const QPointF &windowPos,
759	const QPointF &globalPos, Qt::MouseButton button, Qt::MouseButtons buttons,
760	Qt::KeyboardModifiers modifiers, Qt::MouseEventSource source,
761	const QPointingDevice *device)
762	: QSinglePointEvent(type, device, localPos, windowPos, globalPos, button, buttons, modifiers, source)
763	{
764	}
765
766	Q_IMPL_POINTER_EVENT(QMouseEvent)
767
768	/*!
769	\fn Qt::MouseEventSource QMouseEvent::source() const
770	\since 5.3
771	\deprecated [6.0] Use pointingDevice() instead.
772
773	Returns information about the mouse event source.
774
775	The mouse event source can be used to distinguish between genuine
776	and artificial mouse events. The latter are events that are
777	synthesized from touch events by the operating system or Qt itself.
778	This enum tells you from where it was synthesized; but often
779	it's more useful to know from which device it was synthesized,
780	so try to use pointingDevice() instead.
781
782	\note Many platforms provide no such information. On such platforms
783	\l Qt::MouseEventNotSynthesized is returned always.
784
785	\sa Qt::MouseEventSource
786	\sa QGraphicsSceneMouseEvent::source()
787
788	\note In Qt 5-based code, source() was often used to attempt to distinguish
789	mouse events from an actual mouse vs. those that were synthesized because
790	some legacy QQuickItem or QWidget subclass did not react to a QTouchEvent.
791	However, you could not tell whether it was synthesized from a QTouchEvent
792	or a QTabletEvent, and other information was lost. pointingDevice()
793	tells you the specific device that it came from, so you might check
794	\c {pointingDevice()->type()} or \c {pointingDevice()->capabilities()} to
795	decide how to react to this event. But it's even better to react to the
796	original event rather than handling only mouse events.
797	*/
798	// Note: the docs mention 6.0 as a deprecation version. That is correct and
799	// intended, because we want our users to stop using it! Internally we will
800	// deprecate it when we port our code away from using it.
801	Qt::MouseEventSource QMouseEvent::source() const
802	{
803	return Qt::MouseEventSource(m_source);
804	}
805
806	/*!
807	\since 5.3
808
809	Returns the mouse event flags.
810
811	The mouse event flags provide additional information about a mouse event.
812
813	\sa Qt::MouseEventFlag
814	\sa QGraphicsSceneMouseEvent::flags()
815	*/
816	Qt::MouseEventFlags QMouseEvent::flags() const
817	{
818	return (m_doubleClick ? Qt::MouseEventCreatedDoubleClick : Qt::NoMouseEventFlag);
819	}
820
821	/*!
822	\fn QPointF QMouseEvent::localPos() const
823	\deprecated [6.0] Use position() instead.
824
825	\since 5.0
826
827	Returns the position of the mouse cursor as a QPointF, relative to the
828	widget or item that received the event.
829
830	If you move the widget as a result of the mouse event, use the
831	screen position returned by screenPos() to avoid a shaking
832	motion.
833
834	\sa x(), y(), windowPos(), screenPos()
835	*/
836
837	/*!
838	\fn void QMouseEvent::setLocalPos(const QPointF &localPosition)
839
840	\since 5.8
841
842	\internal
843
844	Sets the local position in the mouse event to \a localPosition. This allows to re-use one event
845	when sending it to a series of receivers that expect the local pos in their
846	respective local coordinates.
847	*/
848
849	/*!
850	\fn QPointF QMouseEvent::windowPos() const
851	\deprecated [6.0] Use scenePosition() instead.
852
853	\since 5.0
854
855	Returns the position of the mouse cursor as a QPointF, relative to the
856	window that received the event.
857
858	If you move the widget as a result of the mouse event, use the
859	global position returned by globalPos() to avoid a shaking
860	motion.
861
862	\sa x(), y(), pos(), localPos(), screenPos()
863	*/
864
865	/*!
866	\fn QPointF QMouseEvent::screenPos() const
867	\deprecated [6.0] Use globalPosition() instead.
868
869	\since 5.0
870
871	Returns the position of the mouse cursor as a QPointF, relative to the
872	screen that received the event.
873
874	\sa x(), y(), pos(), localPos(), windowPos()
875	*/
876
877	/*!
878	\fn QPoint QMouseEvent::pos() const
879	\deprecated [6.0] Use position() instead.
880
881	Returns the position of the mouse cursor, relative to the widget
882	that received the event.
883
884	If you move the widget as a result of the mouse event, use the
885	global position returned by globalPos() to avoid a shaking
886	motion.
887
888	\sa x(), y(), globalPos()
889	*/
890
891	/*!
892	\fn QPoint QMouseEvent::globalPos() const
893	\deprecated [6.0] Use globalPosition().toPoint() instead.
894
895	Returns the global position of the mouse cursor \e{at the time
896	of the event}. This is important on asynchronous window systems
897	like X11. Whenever you move your widgets around in response to
898	mouse events, globalPos() may differ a lot from the current
899	pointer position QCursor::pos(), and from
900	QWidget::mapToGlobal(pos()).
901
902	\sa globalX(), globalY()
903	*/
904
905	/*!
906	\fn int QMouseEvent::x() const
907	\deprecated [6.0] Use position().x() instead.
908
909	Returns the x position of the mouse cursor, relative to the
910	widget that received the event.
911
912	\sa y(), pos()
913	*/
914
915	/*!
916	\fn int QMouseEvent::y() const
917	\deprecated [6.0] Use position().y() instead.
918
919	Returns the y position of the mouse cursor, relative to the
920	widget that received the event.
921
922	\sa x(), pos()
923	*/
924
925	/*!
926	\fn int QMouseEvent::globalX() const
927	\deprecated [6.0] Use globalPosition().x() instead.
928
929	Returns the global x position of the mouse cursor at the time of
930	the event.
931
932	\sa globalY(), globalPos()
933	*/
934
935	/*!
936	\fn int QMouseEvent::globalY() const
937	\deprecated [6.0] Use globalPosition().y() instead.
938
939	Returns the global y position of the mouse cursor at the time of
940	the event.
941
942	\sa globalX(), globalPos()
943	*/
944
945	/*!
946	\class QHoverEvent
947	\ingroup events
948	\inmodule QtGui
949
950	\brief The QHoverEvent class contains parameters that describe a mouse event.
951
952	Mouse events occur when a mouse cursor is moved into, out of, or within a
953	widget, and if the widget has the Qt::WA_Hover attribute.
954
955	The function pos() gives the current cursor position, while oldPos() gives
956	the old mouse position.
957
958	There are a few similarities between the events QEvent::HoverEnter
959	and QEvent::HoverLeave, and the events QEvent::Enter and QEvent::Leave.
960	However, they are slightly different because we do an update() in the event
961	handler of HoverEnter and HoverLeave.
962
963	QEvent::HoverMove is also slightly different from QEvent::MouseMove. Let us
964	consider a top-level window A containing a child B which in turn contains a
965	child C (all with mouse tracking enabled):
966
967	\image hoverevents.png
968
969	Now, if you move the cursor from the top to the bottom in the middle of A,
970	you will get the following QEvent::MouseMove events:
971
972	\list 1
973	\li A::MouseMove
974	\li B::MouseMove
975	\li C::MouseMove
976	\endlist
977
978	You will get the same events for QEvent::HoverMove, except that the event
979	always propagates to the top-level regardless whether the event is accepted
980	or not. It will only stop propagating with the Qt::WA_NoMousePropagation
981	attribute.
982
983	In this case the events will occur in the following way:
984
985	\list 1
986	\li A::HoverMove
987	\li A::HoverMove, B::HoverMove
988	\li A::HoverMove, B::HoverMove, C::HoverMove
989	\endlist
990
991	*/
992
993	/*!
994	\fn QPoint QHoverEvent::pos() const
995	\deprecated [6.0] Use position().toPoint() instead.
996
997	Returns the position of the mouse cursor, relative to the widget
998	that received the event.
999
1000	On QEvent::HoverLeave events, this position will always be
1001	QPoint(-1, -1).
1002
1003	\sa oldPos()
1004	*/
1005
1006	/*!
1007	\fn QPoint QHoverEvent::oldPos() const
1008
1009	Returns the previous position of the mouse cursor, relative to the widget
1010	that received the event. If there is no previous position, oldPos() will
1011	return the same position as pos().
1012
1013	On QEvent::HoverEnter events, this position will always be
1014	QPoint(-1, -1).
1015
1016	\sa pos()
1017	*/
1018
1019	/*!
1020	\fn const QPointF &QHoverEvent::posF() const
1021	\deprecated [6.0] Use position() instead.
1022
1023	Returns the position of the mouse cursor, relative to the widget
1024	that received the event.
1025
1026	On QEvent::HoverLeave events, this position will always be
1027	QPointF(-1, -1).
1028
1029	\sa oldPosF()
1030	*/
1031
1032	/*!
1033	\fn const QPointF &QHoverEvent::oldPosF() const
1034
1035	Returns the previous position of the mouse cursor, relative to the widget
1036	that received the event. If there is no previous position, oldPosF() will
1037	return the same position as posF().
1038
1039	On QEvent::HoverEnter events, this position will always be
1040	QPointF(-1, -1).
1041
1042	\sa posF()
1043	*/
1044
1045	/*!
1046	Constructs a hover event object originating from \a device.
1047
1048	The \a type parameter must be QEvent::HoverEnter,
1049	QEvent::HoverLeave, or QEvent::HoverMove.
1050
1051	The \a scenePos is the current mouse cursor's position relative to the
1052	receiving window or scene, \a oldPos is its previous such position, and
1053	\a globalPos is the mouse position in absolute coordinates.
1054	\a modifiers hold the state of all keyboard modifiers at the time
1055	of the event.
1056	*/
1057	QHoverEvent::QHoverEvent(Type type, const QPointF &scenePos, const QPointF &globalPos, const QPointF &oldPos,
1058	Qt::KeyboardModifiers modifiers, const QPointingDevice *device)
1059	: QSinglePointEvent(type, device, scenePos, scenePos, globalPos, Qt::NoButton, Qt::NoButton, modifiers), m_oldPos(oldPos)
1060	{
1061	}
1062
1063	#if QT_DEPRECATED_SINCE(6, 3)
1064	/*!
1065	\deprecated [6.3] Use the other constructor instead (global position is required).
1066
1067	Constructs a hover event object originating from \a device.
1068
1069	The \a type parameter must be QEvent::HoverEnter,
1070	QEvent::HoverLeave, or QEvent::HoverMove.
1071
1072	The \a pos is the current mouse cursor's position relative to the
1073	receiving widget, while \a oldPos is its previous such position.
1074	\a modifiers hold the state of all keyboard modifiers at the time
1075	of the event.
1076	*/
1077	QHoverEvent::QHoverEvent(Type type, const QPointF &pos, const QPointF &oldPos,
1078	Qt::KeyboardModifiers modifiers, const QPointingDevice *device)
1079	: QSinglePointEvent(type, device, pos, pos, pos, Qt::NoButton, Qt::NoButton, modifiers), m_oldPos(oldPos)
1080	{
1081	}
1082	#endif
1083
1084	Q_IMPL_POINTER_EVENT(QHoverEvent)
1085
1086	#if QT_CONFIG(wheelevent)
1087	/*!
1088	\class QWheelEvent
1089	\brief The QWheelEvent class contains parameters that describe a wheel event.
1090	\inmodule QtGui
1091
1092	\ingroup events
1093
1094	Wheel events are sent to the widget under the mouse cursor, but
1095	if that widget does not handle the event they are sent to the
1096	focus widget. Wheel events are generated for both mouse wheels
1097	and trackpad scroll gestures. There are two ways to read the
1098	wheel event delta: angleDelta() returns the deltas in wheel
1099	degrees. These values are always provided. pixelDelta() returns
1100	the deltas in screen pixels, and is available on platforms that
1101	have high-resolution trackpads, such as \macos. If that is the
1102	case, device()->type() will return QInputDevice::DeviceType::Touchpad.
1103
1104	The functions position() and globalPosition() return the mouse cursor's
1105	location at the time of the event.
1106
1107	A wheel event contains a special accept flag that indicates
1108	whether the receiver wants the event. You should call ignore() if
1109	you do not handle the wheel event; this ensures that it will be
1110	sent to the parent widget.
1111
1112	The QWidget::setEnabled() function can be used to enable or
1113	disable mouse and keyboard events for a widget.
1114
1115	The event handler QWidget::wheelEvent() receives wheel events.
1116
1117	\sa QMouseEvent, QWidget::grabMouse()
1118	*/
1119
1120	/*!
1121	\enum QWheelEvent::anonymous
1122	\internal
1123
1124	\value DefaultDeltasPerStep Defaqult deltas per step
1125	*/
1126
1127	/*!
1128	\fn Qt::MouseEventSource QWheelEvent::source() const
1129	\since 5.5
1130	\deprecated [6.0] Use pointingDevice() instead.
1131
1132	Returns information about the wheel event source.
1133
1134	The source can be used to distinguish between events that come from a mouse
1135	with a physical wheel and events that are generated by some other means,
1136	such as a flick gesture on a touchpad.
1137	This enum tells you from where it was synthesized; but often
1138	it's more useful to know from which device it was synthesized,
1139	so try to use pointingDevice() instead.
1140
1141	\note Many platforms provide no such information. On such platforms
1142	\l Qt::MouseEventNotSynthesized is returned always.
1143
1144	\sa Qt::MouseEventSource
1145	*/
1146
1147	/*!
1148	\fn bool QWheelEvent::inverted() const
1149	\since 5.7
1150
1151	Returns whether the delta values delivered with the event are inverted.
1152
1153	Normally, a vertical wheel will produce a QWheelEvent with positive delta
1154	values if the top of the wheel is rotating away from the hand operating it.
1155	Similarly, a horizontal wheel movement will produce a QWheelEvent with
1156	positive delta values if the top of the wheel is moved to the left.
1157
1158	However, on some platforms this is configurable, so that the same
1159	operations described above will produce negative delta values (but with the
1160	same magnitude). With the inverted property a wheel event consumer can
1161	choose to always follow the direction of the wheel, regardless of the
1162	system settings, but only for specific widgets. (One such use case could be
1163	that the user is rotating the wheel in the same direction as a visual
1164	Tumbler rotates. Another usecase is to make a slider handle follow the
1165	direction of movement of fingers on a touchpad regardless of system
1166	configuration.)
1167
1168	\note Many platforms provide no such information. On such platforms
1169	\l inverted always returns false.
1170	*/
1171
1172	/*!
1173	Constructs a wheel event object.
1174
1175	\since 5.12
1176	The \a pos provides the location of the mouse cursor
1177	within the window. The position in global coordinates is specified
1178	by \a globalPos.
1179
1180	\a pixelDelta contains the scrolling distance in pixels on screen, while
1181	\a angleDelta contains the wheel rotation angle. \a pixelDelta is
1182	optional and can be null.
1183
1184	The mouse and keyboard states at the time of the event are specified by
1185	\a buttons and \a modifiers.
1186
1187	The scrolling phase of the event is specified by \a phase, and the
1188	\a source indicates whether this is a genuine or artificial (synthesized)
1189	event.
1190
1191	If the system is configured to invert the delta values delivered with the
1192	event (such as natural scrolling of the touchpad on macOS), \a inverted
1193	should be \c true. Otherwise, \a inverted is \c false
1194
1195	The device from which the wheel event originated is specified by \a device.
1196
1197	\sa position(), globalPosition(), angleDelta(), pixelDelta(), phase(), inverted(), device()
1198	*/
1199	QWheelEvent::QWheelEvent(const QPointF &pos, const QPointF &globalPos, QPoint pixelDelta, QPoint angleDelta,
1200	Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers, Qt::ScrollPhase phase,
1201	bool inverted, Qt::MouseEventSource source, const QPointingDevice *device)
1202	: QSinglePointEvent(Wheel, device, pos, pos, globalPos, Qt::NoButton, buttons, modifiers, source),
1203	m_pixelDelta(pixelDelta), m_angleDelta(angleDelta)
1204	{
1205	m_phase = phase;
1206	m_invertedScrolling = inverted;
1207	}
1208
1209	Q_IMPL_POINTER_EVENT(QWheelEvent)
1210
1211	/*!
1212	Returns \c true if this event's phase() is Qt::ScrollBegin.
1213	*/
1214	bool QWheelEvent::isBeginEvent() const
1215	{
1216	return m_phase == Qt::ScrollBegin;
1217	}
1218
1219	/*!
1220	Returns \c true if this event's phase() is Qt::ScrollUpdate or Qt::ScrollMomentum.
1221	*/
1222	bool QWheelEvent::isUpdateEvent() const
1223	{
1224	return m_phase == Qt::ScrollUpdate || m_phase == Qt::ScrollMomentum;
1225	}
1226
1227	/*!
1228	Returns \c true if this event's phase() is Qt::ScrollEnd.
1229	*/
1230	bool QWheelEvent::isEndEvent() const
1231	{
1232	return m_phase == Qt::ScrollEnd;
1233	}
1234
1235	#endif // QT_CONFIG(wheelevent)
1236
1237	/*!
1238	\fn QPoint QWheelEvent::pixelDelta() const
1239
1240	Returns the scrolling distance in pixels on screen. This value is
1241	provided on platforms that support high-resolution pixel-based
1242	delta values, such as \macos. The value should be used directly
1243	to scroll content on screen.
1244
1245	Example:
1246
1247	\snippet code/src_gui_kernel_qevent.cpp 0
1248
1249	\note On platforms that support scrolling \l{phase()}{phases}, the delta may be null when:
1250	\list
1251	\li scrolling is about to begin, but the distance did not yet change (Qt::ScrollBegin),
1252	\li or scrolling has ended and the distance did not change anymore (Qt::ScrollEnd).
1253	\endlist
1254	\note On X11 this value is driver-specific and unreliable, use angleDelta() instead.
1255	*/
1256
1257	/*!
1258	\fn QPoint QWheelEvent::angleDelta() const
1259
1260	Returns the relative amount that the wheel was rotated, in eighths of a
1261	degree. A positive value indicates that the wheel was rotated forwards away
1262	from the user; a negative value indicates that the wheel was rotated
1263	backwards toward the user. \c angleDelta().y() provides the angle through
1264	which the common vertical mouse wheel was rotated since the previous event.
1265	\c angleDelta().x() provides the angle through which the horizontal mouse
1266	wheel was rotated, if the mouse has a horizontal wheel; otherwise it stays
1267	at zero. Some mice allow the user to tilt the wheel to perform horizontal
1268	scrolling, and some touchpads support a horizontal scrolling gesture; that
1269	will also appear in \c angleDelta().x().
1270
1271	Most mouse types work in steps of 15 degrees, in which case the
1272	delta value is a multiple of 120; i.e., 120 units * 1/8 = 15 degrees.
1273
1274	However, some mice have finer-resolution wheels and send delta values
1275	that are less than 120 units (less than 15 degrees). To support this
1276	possibility, you can either cumulatively add the delta values from events
1277	until the value of 120 is reached, then scroll the widget, or you can
1278	partially scroll the widget in response to each wheel event. But to
1279	provide a more native feel, you should prefer \l pixelDelta() on platforms
1280	where it's available.
1281
1282	Example:
1283
1284	\snippet code/src_gui_kernel_qevent.cpp 0
1285
1286	\note On platforms that support scrolling \l{phase()}{phases}, the delta may be null when:
1287	\list
1288	\li scrolling is about to begin, but the distance did not yet change (Qt::ScrollBegin),
1289	\li or scrolling has ended and the distance did not change anymore (Qt::ScrollEnd).
1290	\endlist
1291
1292	\sa pixelDelta()
1293	*/
1294
1295	/*!
1296	\fn Qt::ScrollPhase QWheelEvent::phase() const
1297	\since 5.2
1298
1299	Returns the scrolling phase of this wheel event.
1300
1301	\note The Qt::ScrollBegin and Qt::ScrollEnd phases are currently
1302	supported only on \macos.
1303	*/
1304
1305
1306	/*!
1307	\class QKeyEvent
1308	\brief The QKeyEvent class describes a key event.
1309
1310	\ingroup events
1311	\inmodule QtGui
1312
1313	Key events are sent to the widget with keyboard input focus
1314	when keys are pressed or released.
1315
1316	A key event contains a special accept flag that indicates whether
1317	the receiver will handle the key event. This flag is set by default
1318	for QEvent::KeyPress and QEvent::KeyRelease, so there is no need to
1319	call accept() when acting on a key event. For QEvent::ShortcutOverride
1320	the receiver needs to explicitly accept the event to trigger the override.
1321	Calling ignore() on a key event will propagate it to the parent widget.
1322	The event is propagated up the parent widget chain until a widget
1323	accepts it or an event filter consumes it.
1324
1325	The QWidget::setEnabled() function can be used to enable or disable
1326	mouse and keyboard events for a widget.
1327
1328	The event handlers QWidget::keyPressEvent(), QWidget::keyReleaseEvent(),
1329	QGraphicsItem::keyPressEvent() and QGraphicsItem::keyReleaseEvent()
1330	receive key events.
1331
1332	\sa QFocusEvent, QWidget::grabKeyboard()
1333	*/
1334
1335	/*!
1336	Constructs a key event object.
1337
1338	The \a type parameter must be QEvent::KeyPress, QEvent::KeyRelease,
1339	or QEvent::ShortcutOverride.
1340
1341	Int \a key is the code for the Qt::Key that the event loop should listen
1342	for. If \a key is 0, the event is not a result of a known key; for
1343	example, it may be the result of a compose sequence or keyboard macro.
1344	The \a modifiers holds the keyboard modifiers, and the given \a text
1345	is the Unicode text that the key generated. If \a autorep is true,
1346	isAutoRepeat() will be true. \a count is the number of keys involved
1347	in the event.
1348	*/
1349	QKeyEvent::QKeyEvent(Type type, int key, Qt::KeyboardModifiers modifiers, const QString& text,
1350	bool autorep, quint16 count)
1351	: QInputEvent(type, QInputDevice::primaryKeyboard(), modifiers), m_text(text), m_key(key),
1352	m_scanCode(0), m_virtualKey(0), m_nativeModifiers(0),
1353	m_count(count), m_autoRepeat(autorep)
1354	{
1355	if (type == QEvent::ShortcutOverride)
1356	ignore();
1357	}
1358
1359	/*!
1360	Constructs a key event object.
1361
1362	The \a type parameter must be QEvent::KeyPress, QEvent::KeyRelease,
1363	or QEvent::ShortcutOverride.
1364
1365	Int \a key is the code for the Qt::Key that the event loop should listen
1366	for. If \a key is 0, the event is not a result of a known key; for
1367	example, it may be the result of a compose sequence or keyboard macro.
1368	The \a modifiers holds the keyboard modifiers, and the given \a text
1369	is the Unicode text that the key generated. If \a autorep is true,
1370	isAutoRepeat() will be true. \a count is the number of keys involved
1371	in the event.
1372
1373	In addition to the normal key event data, also contains \a nativeScanCode,
1374	\a nativeVirtualKey and \a nativeModifiers. This extra data is used by the
1375	shortcut system, to determine which shortcuts to trigger.
1376	*/
1377	QKeyEvent::QKeyEvent(Type type, int key, Qt::KeyboardModifiers modifiers,
1378	quint32 nativeScanCode, quint32 nativeVirtualKey, quint32 nativeModifiers,
1379	const QString &text, bool autorep, quint16 count, const QInputDevice *device)
1380	: QInputEvent(type, device, modifiers), m_text(text), m_key(key),
1381	m_scanCode(nativeScanCode), m_virtualKey(nativeVirtualKey), m_nativeModifiers(nativeModifiers),
1382	m_count(count), m_autoRepeat(autorep)
1383	{
1384	if (type == QEvent::ShortcutOverride)
1385	ignore();
1386	}
1387
1388
1389	Q_IMPL_EVENT_COMMON(QKeyEvent)
1390
1391	/*!
1392	\fn quint32 QKeyEvent::nativeScanCode() const
1393	\since 4.2
1394
1395	Returns the native scan code of the key event. If the key event
1396	does not contain this data 0 is returned.
1397
1398	\note The native scan code may be 0, even if the key event contains
1399	extended information.
1400	*/
1401
1402	/*!
1403	\fn quint32 QKeyEvent::nativeVirtualKey() const
1404	\since 4.2
1405
1406	Returns the native virtual key, or key sym of the key event.
1407	If the key event does not contain this data 0 is returned.
1408
1409	\note The native virtual key may be 0, even if the key event contains extended information.
1410	*/
1411
1412	/*!
1413	\fn quint32 QKeyEvent::nativeModifiers() const
1414	\since 4.2
1415
1416	Returns the native modifiers of a key event.
1417	If the key event does not contain this data 0 is returned.
1418
1419	\note The native modifiers may be 0, even if the key event contains extended information.
1420	*/
1421
1422	/*!
1423	\fn int QKeyEvent::key() const
1424
1425	Returns the code of the key that was pressed or released.
1426
1427	See \l Qt::Key for the list of keyboard codes. These codes are
1428	independent of the underlying window system. Note that this
1429	function does not distinguish between capital and non-capital
1430	letters, use the text() function (returning the Unicode text the
1431	key generated) for this purpose.
1432
1433	A value of either 0 or Qt::Key_unknown means that the event is not
1434	the result of a known key; for example, it may be the result of
1435	a compose sequence, a keyboard macro, or due to key event
1436	compression.
1437
1438	\sa Qt::WA_KeyCompression
1439	*/
1440
1441	/*!
1442	\fn QString QKeyEvent::text() const
1443
1444	Returns the Unicode text that this key generated.
1445
1446	The text is not limited to the printable range of Unicode
1447	code points, and may include control characters or characters
1448	from other Unicode categories, including QChar::Other_PrivateUse.
1449
1450	The text may also be empty, for example when modifier keys such as
1451	Shift, Control, Alt, and Meta are pressed (depending on the platform).
1452	The key() function will always return a valid value.
1453
1454	\sa Qt::WA_KeyCompression
1455	*/
1456
1457	/*!
1458	Returns the keyboard modifier flags that existed immediately
1459	after the event occurred.
1460
1461	\warning This function cannot always be trusted. The user can
1462	confuse it by pressing both \uicontrol{Shift} keys simultaneously and
1463	releasing one of them, for example.
1464
1465	\sa QGuiApplication::keyboardModifiers()
1466	*/
1467
1468	Qt::KeyboardModifiers QKeyEvent::modifiers() const
1469	{
1470	if (key() == Qt::Key_Shift)
1471	return Qt::KeyboardModifiers(QInputEvent::modifiers()^Qt::ShiftModifier);
1472	if (key() == Qt::Key_Control)
1473	return Qt::KeyboardModifiers(QInputEvent::modifiers()^Qt::ControlModifier);
1474	if (key() == Qt::Key_Alt)
1475	return Qt::KeyboardModifiers(QInputEvent::modifiers()^Qt::AltModifier);
1476	if (key() == Qt::Key_Meta)
1477	return Qt::KeyboardModifiers(QInputEvent::modifiers()^Qt::MetaModifier);
1478	if (key() == Qt::Key_AltGr)
1479	return Qt::KeyboardModifiers(QInputEvent::modifiers()^Qt::GroupSwitchModifier);
1480	return QInputEvent::modifiers();
1481	}
1482
1483	/*!
1484	\fn QKeyCombination QKeyEvent::keyCombination() const
1485
1486	Returns a QKeyCombination object containing both the key() and
1487	the modifiers() carried by this event.
1488
1489	\since 6.0
1490	*/
1491
1492	#if QT_CONFIG(shortcut)
1493	/*!
1494	\fn bool QKeyEvent::matches(QKeySequence::StandardKey key) const
1495	\since 4.2
1496
1497	Returns \c true if the key event matches the given standard \a key;
1498	otherwise returns \c false.
1499	*/
1500	bool QKeyEvent::matches(QKeySequence::StandardKey matchKey) const
1501	{
1502	//The keypad and group switch modifier should not make a difference
1503	uint searchkey = (modifiers() | key()) & ~(Qt::KeypadModifier | Qt::GroupSwitchModifier);
1504
1505	const QList<QKeySequence> bindings = QKeySequence::keyBindings(key: matchKey);
1506	return bindings.contains(t: QKeySequence(searchkey));
1507	}
1508	#endif // QT_CONFIG(shortcut)
1509
1510
1511	/*!
1512	\fn bool QKeyEvent::isAutoRepeat() const
1513
1514	Returns \c true if this event comes from an auto-repeating key;
1515	returns \c false if it comes from an initial key press.
1516
1517	Note that if the event is a multiple-key compressed event that is
1518	partly due to auto-repeat, this function could return either true
1519	or false indeterminately.
1520	*/
1521
1522	/*!
1523	\fn int QKeyEvent::count() const
1524
1525	Returns the number of keys involved in this event. If text()
1526	is not empty, this is simply the length of the string.
1527
1528	\sa Qt::WA_KeyCompression
1529	*/
1530
1531	/*!
1532	\class QFocusEvent
1533	\brief The QFocusEvent class contains event parameters for widget focus
1534	events.
1535	\inmodule QtGui
1536
1537	\ingroup events
1538
1539	Focus events are sent to widgets when the keyboard input focus
1540	changes. Focus events occur due to mouse actions, key presses
1541	(such as \uicontrol{Tab} or \uicontrol{Backtab}), the window system, popup
1542	menus, keyboard shortcuts, or other application-specific reasons.
1543	The reason for a particular focus event is returned by reason()
1544	in the appropriate event handler.
1545
1546	The event handlers QWidget::focusInEvent(),
1547	QWidget::focusOutEvent(), QGraphicsItem::focusInEvent and
1548	QGraphicsItem::focusOutEvent() receive focus events.
1549
1550	\sa QWidget::setFocus(), QWidget::setFocusPolicy(), {Keyboard Focus in Widgets}
1551	*/
1552
1553	/*!
1554	Constructs a focus event object.
1555
1556	The \a type parameter must be either QEvent::FocusIn or
1557	QEvent::FocusOut. The \a reason describes the cause of the change
1558	in focus.
1559	*/
1560	QFocusEvent::QFocusEvent(Type type, Qt::FocusReason reason)
1561	: QEvent(type), m_reason(reason)
1562	{}
1563
1564	Q_IMPL_EVENT_COMMON(QFocusEvent)
1565
1566	/*!
1567	Returns the reason for this focus event.
1568	*/
1569	Qt::FocusReason QFocusEvent::reason() const
1570	{
1571	return m_reason;
1572	}
1573
1574	/*!
1575	\fn bool QFocusEvent::gotFocus() const
1576
1577	Returns \c true if type() is QEvent::FocusIn; otherwise returns
1578	false.
1579	*/
1580
1581	/*!
1582	\fn bool QFocusEvent::lostFocus() const
1583
1584	Returns \c true if type() is QEvent::FocusOut; otherwise returns
1585	false.
1586	*/
1587
1588
1589	/*!
1590	\class QPaintEvent
1591	\brief The QPaintEvent class contains event parameters for paint events.
1592	\inmodule QtGui
1593
1594	\ingroup events
1595
1596	Paint events are sent to widgets that need to update themselves,
1597	for instance when part of a widget is exposed because a covering
1598	widget was moved.
1599
1600	The event contains a region() that needs to be updated, and a
1601	rect() that is the bounding rectangle of that region. Both are
1602	provided because many widgets cannot make much use of region(),
1603	and rect() can be much faster than region().boundingRect().
1604
1605	\section1 Automatic Clipping
1606
1607	Painting is clipped to region() during the processing of a paint
1608	event. This clipping is performed by Qt's paint system and is
1609	independent of any clipping that may be applied to a QPainter used to
1610	draw on the paint device.
1611
1612	As a result, the value returned by QPainter::clipRegion() on
1613	a newly-constructed QPainter will not reflect the clip region that is
1614	used by the paint system.
1615
1616	\sa QPainter, QWidget::update(), QWidget::repaint(),
1617	QWidget::paintEvent()
1618	*/
1619
1620	/*!
1621	Constructs a paint event object with the region that needs to
1622	be updated. The region is specified by \a paintRegion.
1623	*/
1624	QPaintEvent::QPaintEvent(const QRegion& paintRegion)
1625	: QEvent(Paint), m_rect(paintRegion.boundingRect()), m_region(paintRegion), m_erased(false)
1626	{}
1627
1628	/*!
1629	Constructs a paint event object with the rectangle that needs
1630	to be updated. The region is specified by \a paintRect.
1631	*/
1632	QPaintEvent::QPaintEvent(const QRect &paintRect)
1633	: QEvent(Paint), m_rect(paintRect),m_region(paintRect), m_erased(false)
1634	{}
1635
1636
1637	Q_IMPL_EVENT_COMMON(QPaintEvent)
1638
1639	/*!
1640	\fn const QRect &QPaintEvent::rect() const
1641
1642	Returns the rectangle that needs to be updated.
1643
1644	\sa region(), QPainter::setClipRect()
1645	*/
1646
1647	/*!
1648	\fn const QRegion &QPaintEvent::region() const
1649
1650	Returns the region that needs to be updated.
1651
1652	\sa rect(), QPainter::setClipRegion()
1653	*/
1654
1655
1656	/*!
1657	\class QMoveEvent
1658	\brief The QMoveEvent class contains event parameters for move events.
1659	\inmodule QtGui
1660
1661	\ingroup events
1662
1663	Move events are sent to widgets that have been moved to a new
1664	position relative to their parent.
1665
1666	The event handler QWidget::moveEvent() receives move events.
1667
1668	\sa QWidget::move(), QWidget::setGeometry()
1669	*/
1670
1671	/*!
1672	Constructs a move event with the new and old widget positions,
1673	\a pos and \a oldPos respectively.
1674	*/
1675	QMoveEvent::QMoveEvent(const QPoint &pos, const QPoint &oldPos)
1676	: QEvent(Move), m_pos(pos), m_oldPos(oldPos)
1677	{}
1678
1679	Q_IMPL_EVENT_COMMON(QMoveEvent)
1680
1681	/*!
1682	\fn const QPoint &QMoveEvent::pos() const
1683
1684	Returns the new position of the widget. This excludes the window
1685	frame for top level widgets.
1686	*/
1687
1688	/*!
1689	\fn const QPoint &QMoveEvent::oldPos() const
1690
1691	Returns the old position of the widget.
1692	*/
1693
1694	/*!
1695	\class QExposeEvent
1696	\since 5.0
1697	\brief The QExposeEvent class contains event parameters for expose events.
1698	\inmodule QtGui
1699
1700	\ingroup events
1701
1702	Expose events are sent to windows when they move between the un-exposed and
1703	exposed states.
1704
1705	An exposed window is potentially visible to the user. If the window is moved
1706	off screen, is made totally obscured by another window, is minimized, or
1707	similar, an expose event is sent to the window, and isExposed() might
1708	change to false.
1709
1710	Expose events should not be used to paint. Handle QPaintEvent
1711	instead.
1712
1713	The event handler QWindow::exposeEvent() receives expose events.
1714	*/
1715
1716	/*!
1717	Constructs an expose event for the given \a exposeRegion which must be
1718	in local coordinates.
1719	*/
1720	QExposeEvent::QExposeEvent(const QRegion &exposeRegion)
1721	: QEvent(Expose)
1722	, m_region(exposeRegion)
1723	{
1724	}
1725
1726	Q_IMPL_EVENT_COMMON(QExposeEvent)
1727
1728	/*!
1729	\class QPlatformSurfaceEvent
1730	\since 5.5
1731	\brief The QPlatformSurfaceEvent class is used to notify about native platform surface events.
1732	\inmodule QtGui
1733
1734	\ingroup events
1735
1736	Platform window events are synchronously sent to windows and offscreen surfaces when their
1737	underlying native surfaces are created or are about to be destroyed.
1738
1739	Applications can respond to these events to know when the underlying platform
1740	surface exists.
1741	*/
1742
1743	/*!
1744	\enum QPlatformSurfaceEvent::SurfaceEventType
1745
1746	This enum describes the type of platform surface event. The possible types are:
1747
1748	\value SurfaceCreated The underlying native surface has been created
1749	\value SurfaceAboutToBeDestroyed The underlying native surface will be destroyed immediately after this event
1750
1751	The \c SurfaceAboutToBeDestroyed event type is useful as a means of stopping rendering to
1752	a platform window before it is destroyed.
1753	*/
1754
1755	/*!
1756	\fn QPlatformSurfaceEvent::SurfaceEventType QPlatformSurfaceEvent::surfaceEventType() const
1757
1758	Returns the specific type of platform surface event.
1759	*/
1760
1761	/*!
1762	Constructs a platform surface event for the given \a surfaceEventType.
1763	*/
1764	QPlatformSurfaceEvent::QPlatformSurfaceEvent(SurfaceEventType surfaceEventType)
1765	: QEvent(PlatformSurface)
1766	, m_surfaceEventType(surfaceEventType)
1767	{
1768	}
1769
1770	Q_IMPL_EVENT_COMMON(QPlatformSurfaceEvent)
1771
1772	/*!
1773	\fn const QRegion &QExposeEvent::region() const
1774	\deprecated [6.0] Use QPaintEvent instead.
1775
1776	Returns the window area that has been exposed. The region is given in local coordinates.
1777	*/
1778
1779	/*!
1780	\class QResizeEvent
1781	\brief The QResizeEvent class contains event parameters for resize events.
1782	\inmodule QtGui
1783
1784	\ingroup events
1785
1786	Resize events are sent to widgets that have been resized.
1787
1788	The event handler QWidget::resizeEvent() receives resize events.
1789
1790	\sa QWidget::resize(), QWidget::setGeometry()
1791	*/
1792
1793	/*!
1794	Constructs a resize event with the new and old widget sizes, \a
1795	size and \a oldSize respectively.
1796	*/
1797	QResizeEvent::QResizeEvent(const QSize &size, const QSize &oldSize)
1798	: QEvent(Resize), m_size(size), m_oldSize(oldSize)
1799	{}
1800
1801	Q_IMPL_EVENT_COMMON(QResizeEvent)
1802
1803	/*!
1804	\fn const QSize &QResizeEvent::size() const
1805
1806	Returns the new size of the widget. This is the same as
1807	QWidget::size().
1808	*/
1809
1810	/*!
1811	\fn const QSize &QResizeEvent::oldSize() const
1812
1813	Returns the old size of the widget.
1814	*/
1815
1816
1817	/*!
1818	\class QCloseEvent
1819	\brief The QCloseEvent class contains parameters that describe a close event.
1820
1821	\ingroup events
1822	\inmodule QtGui
1823
1824	Close events are sent to widgets that the user wants to close,
1825	usually by choosing "Close" from the window menu, or by clicking
1826	the \uicontrol{X} title bar button. They are also sent when you call
1827	QWidget::close() to close a widget programmatically.
1828
1829	Close events contain a flag that indicates whether the receiver
1830	wants the widget to be closed or not. When a widget accepts the
1831	close event, it is hidden (and destroyed if it was created with
1832	the Qt::WA_DeleteOnClose flag). If it refuses to accept the close
1833	event nothing happens. (Under X11 it is possible that the window
1834	manager will forcibly close the window; but at the time of writing
1835	we are not aware of any window manager that does this.)
1836
1837	The event handler QWidget::closeEvent() receives close events. The
1838	default implementation of this event handler accepts the close
1839	event. If you do not want your widget to be hidden, or want some
1840	special handling, you should reimplement the event handler and
1841	ignore() the event.
1842
1843	If you want the widget to be deleted when it is closed, create it
1844	with the Qt::WA_DeleteOnClose flag. This is very useful for
1845	independent top-level windows in a multi-window application.
1846
1847	\l{QObject}s emits the \l{QObject::destroyed()}{destroyed()}
1848	signal when they are deleted.
1849
1850	If the last top-level window is closed, the
1851	QGuiApplication::lastWindowClosed() signal is emitted.
1852
1853	The isAccepted() function returns \c true if the event's receiver has
1854	agreed to close the widget; call accept() to agree to close the
1855	widget and call ignore() if the receiver of this event does not
1856	want the widget to be closed.
1857
1858	\sa QWidget::close(), QWidget::hide(), QObject::destroyed(),
1859	QCoreApplication::exec(), QCoreApplication::quit(),
1860	QGuiApplication::lastWindowClosed()
1861	*/
1862
1863	/*!
1864	Constructs a close event object.
1865
1866	\sa accept()
1867	*/
1868	QCloseEvent::QCloseEvent()
1869	: QEvent(Close)
1870	{}
1871
1872	Q_IMPL_EVENT_COMMON(QCloseEvent)
1873
1874	/*!
1875	\class QIconDragEvent
1876	\brief The QIconDragEvent class indicates that a main icon drag has begun.
1877	\inmodule QtGui
1878
1879	\ingroup events
1880
1881	Icon drag events are sent to widgets when the main icon of a window
1882	has been dragged away. On \macos, this happens when the proxy
1883	icon of a window is dragged off the title bar.
1884
1885	It is normal to begin using drag and drop in response to this
1886	event.
1887
1888	\sa {Drag and Drop}, QMimeData, QDrag
1889	*/
1890
1891	/*!
1892	Constructs an icon drag event object with the accept flag set to
1893	false.
1894
1895	\sa accept()
1896	*/
1897	QIconDragEvent::QIconDragEvent()
1898	: QEvent(IconDrag)
1899	{ ignore(); }
1900
1901	Q_IMPL_EVENT_COMMON(QIconDragEvent)
1902
1903	/*!
1904	\class QContextMenuEvent
1905	\brief The QContextMenuEvent class contains parameters that describe a context menu event.
1906	\inmodule QtGui
1907
1908	\ingroup events
1909
1910	Context menu events are sent to widgets when a user performs
1911	an action associated with opening a context menu.
1912	The actions required to open context menus vary between platforms;
1913	for example, on Windows, pressing the menu button or clicking the
1914	right mouse button will cause this event to be sent.
1915
1916	When this event occurs it is customary to show a QMenu with a
1917	context menu, if this is relevant to the context.
1918	*/
1919
1920	#ifndef QT_NO_CONTEXTMENU
1921	/*!
1922	Constructs a context menu event object with the accept parameter
1923	flag set to false.
1924
1925	The \a reason parameter must be QContextMenuEvent::Mouse or
1926	QContextMenuEvent::Keyboard.
1927
1928	The \a pos parameter specifies the mouse position relative to the
1929	receiving widget. \a globalPos is the mouse position in absolute
1930	coordinates. The \a modifiers holds the keyboard modifiers.
1931	*/
1932	QContextMenuEvent::QContextMenuEvent(Reason reason, const QPoint &pos, const QPoint &globalPos,
1933	Qt::KeyboardModifiers modifiers)
1934	: QInputEvent(ContextMenu, QPointingDevice::primaryPointingDevice(), modifiers), m_pos(pos), m_globalPos(globalPos), m_reason(reason)
1935	{}
1936
1937	Q_IMPL_EVENT_COMMON(QContextMenuEvent)
1938
1939	#if QT_DEPRECATED_SINCE(6, 4)
1940	/*!
1941	\deprecated [6.4] Use the other constructor instead (global position is required).
1942
1943	Constructs a context menu event object with the accept parameter
1944	flag set to false.
1945
1946	The \a reason parameter must be QContextMenuEvent::Mouse or
1947	QContextMenuEvent::Keyboard.
1948
1949	The \a pos parameter specifies the mouse position relative to the
1950	receiving widget.
1951
1952	The globalPos() is initialized to QCursor::pos(), which may not be
1953	appropriate. Use the other constructor to specify the global
1954	position explicitly.
1955	*/
1956	QContextMenuEvent::QContextMenuEvent(Reason reason, const QPoint &pos)
1957	: QInputEvent(ContextMenu, QInputDevice::primaryKeyboard()), m_pos(pos), m_reason(reason)
1958	{
1959	#ifndef QT_NO_CURSOR
1960	m_globalPos = QCursor::pos();
1961	#endif
1962	}
1963	#endif
1964
1965	/*!
1966	\fn const QPoint &QContextMenuEvent::pos() const
1967
1968	Returns the position of the mouse pointer relative to the widget
1969	that received the event.
1970
1971	\sa x(), y(), globalPos()
1972	*/
1973
1974	/*!
1975	\fn int QContextMenuEvent::x() const
1976
1977	Returns the x position of the mouse pointer, relative to the
1978	widget that received the event.
1979
1980	\sa y(), pos()
1981	*/
1982
1983	/*!
1984	\fn int QContextMenuEvent::y() const
1985
1986	Returns the y position of the mouse pointer, relative to the
1987	widget that received the event.
1988
1989	\sa x(), pos()
1990	*/
1991
1992	/*!
1993	\fn const QPoint &QContextMenuEvent::globalPos() const
1994
1995	Returns the global position of the mouse pointer at the time of
1996	the event.
1997
1998	\sa x(), y(), pos()
1999	*/
2000
2001	/*!
2002	\fn int QContextMenuEvent::globalX() const
2003
2004	Returns the global x position of the mouse pointer at the time of
2005	the event.
2006
2007	\sa globalY(), globalPos()
2008	*/
2009
2010	/*!
2011	\fn int QContextMenuEvent::globalY() const
2012
2013	Returns the global y position of the mouse pointer at the time of
2014	the event.
2015
2016	\sa globalX(), globalPos()
2017	*/
2018	#endif // QT_NO_CONTEXTMENU
2019
2020	/*!
2021	\enum QContextMenuEvent::Reason
2022
2023	This enum describes the reason why the event was sent.
2024
2025	\value Mouse The mouse caused the event to be sent. Normally this
2026	means the right mouse button was clicked, but this is platform
2027	dependent.
2028
2029	\value Keyboard The keyboard caused this event to be sent. On
2030	Windows, this means the menu button was pressed.
2031
2032	\value Other The event was sent by some other means (i.e. not by
2033	the mouse or keyboard).
2034	*/
2035
2036
2037	/*!
2038	\fn QContextMenuEvent::Reason QContextMenuEvent::reason() const
2039
2040	Returns the reason for this context event.
2041	*/
2042
2043
2044	/*!
2045	\class QInputMethodEvent
2046	\brief The QInputMethodEvent class provides parameters for input method events.
2047	\inmodule QtGui
2048
2049	\ingroup events
2050
2051	Input method events are sent to widgets when an input method is
2052	used to enter text into a widget. Input methods are widely used
2053	to enter text for languages with non-Latin alphabets.
2054
2055	Note that when creating custom text editing widgets, the
2056	Qt::WA_InputMethodEnabled window attribute must be set explicitly
2057	(using the QWidget::setAttribute() function) in order to receive
2058	input method events.
2059
2060	The events are of interest to authors of keyboard entry widgets
2061	who want to be able to correctly handle languages with complex
2062	character input. Text input in such languages is usually a three
2063	step process:
2064
2065	\list 1
2066	\li \b{Starting to Compose}
2067
2068	When the user presses the first key on a keyboard, an input
2069	context is created. This input context will contain a string
2070	of the typed characters.
2071
2072	\li \b{Composing}
2073
2074	With every new key pressed, the input method will try to create a
2075	matching string for the text typed so far called preedit
2076	string. While the input context is active, the user can only move
2077	the cursor inside the string belonging to this input context.
2078
2079	\li \b{Completing}
2080
2081	At some point, the user will activate a user interface component
2082	(perhaps using a particular key) where they can choose from a
2083	number of strings matching the text they have typed so far. The
2084	user can either confirm their choice cancel the input; in either
2085	case the input context will be closed.
2086	\endlist
2087
2088	QInputMethodEvent models these three stages, and transfers the
2089	information needed to correctly render the intermediate result. A
2090	QInputMethodEvent has two main parameters: preeditString() and
2091	commitString(). The preeditString() parameter gives the currently
2092	active preedit string. The commitString() parameter gives a text
2093	that should get added to (or replace parts of) the text of the
2094	editor widget. It usually is a result of the input operations and
2095	has to be inserted to the widgets text directly before the preedit
2096	string.
2097
2098	If the commitString() should replace parts of the text in
2099	the editor, replacementLength() will contain the number of
2100	characters to be replaced. replacementStart() contains the position
2101	at which characters are to be replaced relative from the start of
2102	the preedit string.
2103
2104	A number of attributes control the visual appearance of the
2105	preedit string (the visual appearance of text outside the preedit
2106	string is controlled by the widget only). The AttributeType enum
2107	describes the different attributes that can be set.
2108
2109	A class implementing QWidget::inputMethodEvent() or
2110	QGraphicsItem::inputMethodEvent() should at least understand and
2111	honor the \l TextFormat and \l Cursor attributes.
2112
2113	Since input methods need to be able to query certain properties
2114	from the widget or graphics item, subclasses must also implement
2115	QWidget::inputMethodQuery() and QGraphicsItem::inputMethodQuery(),
2116	respectively.
2117
2118	When receiving an input method event, the text widget has to performs the
2119	following steps:
2120
2121	\list 1
2122	\li If the widget has selected text, the selected text should get
2123	removed.
2124
2125	\li Remove the text starting at replacementStart() with length
2126	replacementLength() and replace it by the commitString(). If
2127	replacementLength() is 0, replacementStart() gives the insertion
2128	position for the commitString().
2129
2130	When doing replacement the area of the preedit
2131	string is ignored, thus a replacement starting at -1 with a length
2132	of 2 will remove the last character before the preedit string and
2133	the first character afterwards, and insert the commit string
2134	directly before the preedit string.
2135
2136	If the widget implements undo/redo, this operation gets added to
2137	the undo stack.
2138
2139	\li If there is no current preedit string, insert the
2140	preeditString() at the current cursor position; otherwise replace
2141	the previous preeditString with the one received from this event.
2142
2143	If the widget implements undo/redo, the preeditString() should not
2144	influence the undo/redo stack in any way.
2145
2146	The widget should examine the list of attributes to apply to the
2147	preedit string. It has to understand at least the TextFormat and
2148	Cursor attributes and render them as specified.
2149	\endlist
2150
2151	\sa QInputMethod
2152	*/
2153
2154	/*!
2155	\enum QInputMethodEvent::AttributeType
2156
2157	\value TextFormat
2158	A QTextCharFormat for the part of the preedit string specified by
2159	start and length. value contains a QVariant of type QTextFormat
2160	specifying rendering of this part of the preedit string. There
2161	should be at most one format for every part of the preedit
2162	string. If several are specified for any character in the string the
2163	behaviour is undefined. A conforming implementation has to at least
2164	honor the backgroundColor, textColor and fontUnderline properties
2165	of the format.
2166
2167	\value Cursor If set, a cursor should be shown inside the preedit
2168	string at position start. The length variable determines whether
2169	the cursor is visible or not. If the length is 0 the cursor is
2170	invisible. If value is a QVariant of type QColor this color will
2171	be used for rendering the cursor, otherwise the color of the
2172	surrounding text will be used. There should be at most one Cursor
2173	attribute per event. If several are specified the behaviour is
2174	undefined.
2175
2176	\value Language
2177	The variant contains a QLocale object specifying the language of a
2178	certain part of the preedit string. There should be at most one
2179	language set for every part of the preedit string. If several are
2180	specified for any character in the string the behavior is undefined.
2181
2182	\value Ruby
2183	The ruby text for a part of the preedit string. There should be at
2184	most one ruby text set for every part of the preedit string. If
2185	several are specified for any character in the string the behaviour
2186	is undefined.
2187
2188	\value Selection
2189	If set, the edit cursor should be moved to the specified position
2190	in the editor text contents. In contrast with \c Cursor, this
2191	attribute does not work on the preedit text, but on the surrounding
2192	text. The cursor will be moved after the commit string has been
2193	committed, and the preedit string will be located at the new edit
2194	position.
2195	The start position specifies the new position and the length
2196	variable can be used to set a selection starting from that point.
2197	The value is unused.
2198
2199	\sa Attribute
2200	*/
2201
2202	/*!
2203	\class QInputMethodEvent::Attribute
2204	\inmodule QtGui
2205	\brief The QInputMethodEvent::Attribute class stores an input method attribute.
2206	*/
2207
2208	/*!
2209	\fn QInputMethodEvent::Attribute::Attribute(AttributeType type, int start, int length, QVariant value)
2210
2211	Constructs an input method attribute. \a type specifies the type
2212	of attribute, \a start and \a length the position of the
2213	attribute, and \a value the value of the attribute.
2214	*/
2215
2216	/*!
2217	\fn QInputMethodEvent::Attribute::Attribute(AttributeType type, int start, int length)
2218	\overload
2219	\since 5.7
2220
2221	Constructs an input method attribute with no value. \a type
2222	specifies the type of attribute, and \a start and \a length
2223	the position of the attribute.
2224	*/
2225
2226	/*!
2227	Constructs an event of type QEvent::InputMethod. The
2228	attributes(), preeditString(), commitString(), replacementStart(),
2229	and replacementLength() are initialized to default values.
2230
2231	\sa setCommitString()
2232	*/
2233	QInputMethodEvent::QInputMethodEvent()
2234	: QEvent(QEvent::InputMethod), m_replacementStart(0), m_replacementLength(0)
2235	{
2236	}
2237
2238	/*!
2239	Constructs an event of type QEvent::InputMethod. The
2240	preedit text is set to \a preeditText, the attributes to
2241	\a attributes.
2242
2243	The commitString(), replacementStart(), and replacementLength()
2244	values can be set using setCommitString().
2245
2246	\sa preeditString(), attributes()
2247	*/
2248	QInputMethodEvent::QInputMethodEvent(const QString &preeditText, const QList<Attribute> &attributes)
2249	: QEvent(QEvent::InputMethod), m_preedit(preeditText), m_attributes(attributes),
2250	m_replacementStart(0), m_replacementLength(0)
2251	{
2252	}
2253
2254	Q_IMPL_EVENT_COMMON(QInputMethodEvent)
2255
2256	/*!
2257	Sets the commit string to \a commitString.
2258
2259	The commit string is the text that should get added to (or
2260	replace parts of) the text of the editor widget. It usually is a
2261	result of the input operations and has to be inserted to the
2262	widgets text directly before the preedit string.
2263
2264	If the commit string should replace parts of the text in
2265	the editor, \a replaceLength specifies the number of
2266	characters to be replaced. \a replaceFrom specifies the position
2267	at which characters are to be replaced relative from the start of
2268	the preedit string.
2269
2270	\sa commitString(), replacementStart(), replacementLength()
2271	*/
2272	void QInputMethodEvent::setCommitString(const QString &commitString, int replaceFrom, int replaceLength)
2273	{
2274	m_commit = commitString;
2275	m_replacementStart = replaceFrom;
2276	m_replacementLength = replaceLength;
2277	}
2278
2279	/*!
2280	\fn const QList<Attribute> &QInputMethodEvent::attributes() const
2281
2282	Returns the list of attributes passed to the QInputMethodEvent
2283	constructor. The attributes control the visual appearance of the
2284	preedit string (the visual appearance of text outside the preedit
2285	string is controlled by the widget only).
2286
2287	\sa preeditString(), Attribute
2288	*/
2289
2290	/*!
2291	\fn const QString &QInputMethodEvent::preeditString() const
2292
2293	Returns the preedit text, i.e. the text before the user started
2294	editing it.
2295
2296	\sa commitString(), attributes()
2297	*/
2298
2299	/*!
2300	\fn const QString &QInputMethodEvent::commitString() const
2301
2302	Returns the text that should get added to (or replace parts of)
2303	the text of the editor widget. It usually is a result of the
2304	input operations and has to be inserted to the widgets text
2305	directly before the preedit string.
2306
2307	\sa setCommitString(), preeditString(), replacementStart(), replacementLength()
2308	*/
2309
2310	/*!
2311	\fn int QInputMethodEvent::replacementStart() const
2312
2313	Returns the position at which characters are to be replaced relative
2314	from the start of the preedit string.
2315
2316	\sa replacementLength(), setCommitString()
2317	*/
2318
2319	/*!
2320	\fn int QInputMethodEvent::replacementLength() const
2321
2322	Returns the number of characters to be replaced in the preedit
2323	string.
2324
2325	\sa replacementStart(), setCommitString()
2326	*/
2327
2328	/*!
2329	\class QInputMethodQueryEvent
2330	\since 5.0
2331	\inmodule QtGui
2332
2333	\brief The QInputMethodQueryEvent class provides an event sent by the input context to input objects.
2334
2335	It is used by the
2336	input method to query a set of properties of the object to be
2337	able to support complex input method operations as support for
2338	surrounding text and reconversions.
2339
2340	queries() specifies which properties are queried.
2341
2342	The object should call setValue() on the event to fill in the requested
2343	data before calling accept().
2344	*/
2345
2346	/*!
2347	\fn Qt::InputMethodQueries QInputMethodQueryEvent::queries() const
2348
2349	Returns the properties queried by the event.
2350	*/
2351
2352	/*!
2353	Constructs a query event for properties given by \a queries.
2354	*/
2355	QInputMethodQueryEvent::QInputMethodQueryEvent(Qt::InputMethodQueries queries)
2356	: QEvent(InputMethodQuery),
2357	m_queries(queries)
2358	{
2359	}
2360
2361	Q_IMPL_EVENT_COMMON(QInputMethodQueryEvent)
2362
2363	/*!
2364	Sets property \a query to \a value.
2365	*/
2366	void QInputMethodQueryEvent::setValue(Qt::InputMethodQuery query, const QVariant &value)
2367	{
2368	for (int i = 0; i < m_values.size(); ++i) {
2369	if (m_values.at(i).query == query) {
2370	m_values[i].value = value;
2371	return;
2372	}
2373	}
2374	QueryPair pair = { .query: query, .value: value };
2375	m_values.append(t: pair);
2376	}
2377
2378	/*!
2379	Returns value of the property \a query.
2380	*/
2381	QVariant QInputMethodQueryEvent::value(Qt::InputMethodQuery query) const
2382	{
2383	for (int i = 0; i < m_values.size(); ++i)
2384	if (m_values.at(i).query == query)
2385	return m_values.at(i).value;
2386	return QVariant();
2387	}
2388
2389	#if QT_CONFIG(tabletevent)
2390
2391	/*!
2392	\class QTabletEvent
2393	\brief The QTabletEvent class contains parameters that describe a Tablet event.
2394	\inmodule QtGui
2395
2396	\ingroup events
2397
2398	\e{Tablet events} are generated from tablet peripherals such as Wacom
2399	tablets and various other brands, and electromagnetic stylus devices
2400	included with some types of tablet computers. (It is not the same as
2401	\l QTouchEvent which a touchscreen generates, even when a passive stylus is
2402	used on a touchscreen.)
2403
2404	Tablet events are similar to mouse events; for example, the \l x(), \l y(),
2405	\l pos(), \l globalX(), \l globalY(), and \l globalPos() accessors provide
2406	the cursor position, and you can see which \l buttons() are pressed
2407	(pressing the stylus tip against the tablet surface is equivalent to a left
2408	mouse button). But tablet events also pass through some extra information
2409	that the tablet device driver provides; for example, you might want to do
2410	subpixel rendering with higher resolution coordinates (\l globalPosF()),
2411	adjust color brightness based on the \l pressure() of the tool against the
2412	tablet surface, use different brushes depending on the type of tool in use
2413	(\l deviceType()), modulate the brush shape in some way according to the
2414	X-axis and Y-axis tilt of the tool with respect to the tablet surface
2415	(\l xTilt() and \l yTilt()), and use a virtual eraser instead of a brush if
2416	the user switches to the other end of a double-ended stylus
2417	(\l pointerType()).
2418
2419	Every event contains an accept flag that indicates whether the receiver
2420	wants the event. You should call QTabletEvent::accept() if you handle the
2421	tablet event; otherwise it will be sent to the parent widget. The exception
2422	are TabletEnterProximity and TabletLeaveProximity events: these are only
2423	sent to QApplication and do not check whether or not they are accepted.
2424
2425	The QWidget::setEnabled() function can be used to enable or disable
2426	mouse, tablet and keyboard events for a widget.
2427
2428	The event handler QWidget::tabletEvent() receives TabletPress,
2429	TabletRelease and TabletMove events. Qt will first send a
2430	tablet event, then if it is not accepted by any widget, it will send a
2431	mouse event. This allows users of applications that are not designed for
2432	tablets to use a tablet like a mouse. However high-resolution drawing
2433	applications should handle the tablet events, because they can occur at a
2434	higher frequency, which is a benefit for smooth and accurate drawing.
2435	If the tablet events are rejected, the synthetic mouse events may be
2436	compressed for efficiency.
2437
2438	Note that pressing the stylus button while the stylus hovers over the
2439	tablet will generate a button press on some types of tablets, while on
2440	other types it will be necessary to press the stylus against the tablet
2441	surface in order to register the simultaneous stylus button press.
2442
2443	\section1 Notes for X11 Users
2444
2445	If the tablet is configured in xorg.conf to use the Wacom driver, there
2446	will be separate XInput "devices" for the stylus, eraser, and (optionally)
2447	cursor and touchpad. Qt recognizes these by their names. Otherwise, if the
2448	tablet is configured to use the evdev driver, there will be only one device
2449	and applications may not be able to distinguish the stylus from the eraser.
2450
2451	\section1 Notes for Windows Users
2452
2453	Tablet support currently requires the WACOM windows driver providing the DLL
2454	\c{wintab32.dll} to be installed. It is contained in older packages,
2455	for example \c{pentablet_5.3.5-3.exe}.
2456
2457	*/
2458
2459	/*!
2460	Construct a tablet event of the given \a type.
2461
2462	The \a pos parameter indicates where the event occurred in the widget;
2463	\a globalPos is the corresponding position in absolute coordinates.
2464
2465	\a pressure gives the pressure exerted on the device \a dev.
2466
2467	\a xTilt and \a yTilt give the device's degree of tilt from the
2468	x and y axes respectively.
2469
2470	\a keyState specifies which keyboard modifiers are pressed (e.g.,
2471	\uicontrol{Ctrl}).
2472
2473	The \a z parameter gives the Z coordinate of the device on the tablet;
2474	this is usually given by a wheel on a 4D mouse. If the device does not
2475	support a Z-axis (i.e. \l QPointingDevice::capabilities() does not include
2476	\c ZPosition), pass \c 0 here.
2477
2478	The \a tangentialPressure parameter gives the tangential pressure
2479	thumbwheel value from an airbrush. If the device does not support
2480	tangential pressure (i.e. \l QPointingDevice::capabilities() does not
2481	include \c TangentialPressure), pass \c 0 here.
2482
2483	\a rotation gives the device's rotation in degrees.
2484	4D mice, the Wacom Art Pen, and the Apple Pencil support rotation.
2485	If the device does not support rotation (i.e. \l QPointingDevice::capabilities()
2486	does not include \c Rotation), pass \c 0 here.
2487
2488	The \a button that caused the event is given as a value from the
2489	\l Qt::MouseButton enum. If the event \a type is not \l TabletPress or
2490	\l TabletRelease, the appropriate button for this event is \l Qt::NoButton.
2491
2492	\a buttons is the state of all buttons at the time of the event.
2493
2494	\sa pos(), globalPos(), device(), pressure(), xTilt(), yTilt(), uniqueId(), rotation(),
2495	tangentialPressure(), z()
2496	*/
2497	QTabletEvent::QTabletEvent(Type type, const QPointingDevice *dev, const QPointF &pos, const QPointF &globalPos,
2498	qreal pressure, float xTilt, float yTilt,
2499	float tangentialPressure, qreal rotation, float z,
2500	Qt::KeyboardModifiers keyState,
2501	Qt::MouseButton button, Qt::MouseButtons buttons)
2502	: QSinglePointEvent(type, dev, pos, pos, globalPos, button, buttons, keyState),
2503	m_tangential(tangentialPressure),
2504	m_xTilt(xTilt),
2505	m_yTilt(yTilt),
2506	m_z(z)
2507	{
2508	QEventPoint &p = point(i: 0);
2509	QMutableEventPoint::setPressure(p, arg: pressure);
2510	QMutableEventPoint::setRotation(p, arg: rotation);
2511	}
2512
2513	Q_IMPL_POINTER_EVENT(QTabletEvent)
2514
2515	/*!
2516	\fn qreal QTabletEvent::tangentialPressure() const
2517
2518	Returns the tangential pressure for the device. This is typically given by a finger
2519	wheel on an airbrush tool. The range is from -1.0 to 1.0. 0.0 indicates a
2520	neutral position. Current airbrushes can only move in the positive
2521	direction from the neutrual position. If the device does not support
2522	tangential pressure, this value is always 0.0.
2523
2524	\note The value is stored as a single-precision float.
2525
2526	\sa pressure()
2527	*/
2528
2529	/*!
2530	\fn qreal QTabletEvent::rotation() const
2531
2532	Returns the rotation of the current tool in degrees, where zero means the
2533	tip of the stylus is pointing towards the top of the tablet, a positive
2534	value means it's turned to the right, and a negative value means it's
2535	turned to the left. This can be given by a 4D Mouse or a rotation-capable
2536	stylus (such as the Wacom Art Pen or the Apple Pencil). If the device does
2537	not support rotation, this value is always 0.0.
2538	*/
2539
2540	/*!
2541	\fn qreal QTabletEvent::pressure() const
2542
2543	Returns the pressure for the device. 0.0 indicates that the stylus is not
2544	on the tablet, 1.0 indicates the maximum amount of pressure for the stylus.
2545
2546	\sa tangentialPressure()
2547	*/
2548
2549	/*!
2550	\fn qreal QTabletEvent::xTilt() const
2551
2552	Returns the angle between the device (a pen, for example) and the
2553	perpendicular in the direction of the x axis.
2554	Positive values are towards the tablet's physical right. The angle
2555	is in the range -60 to +60 degrees.
2556
2557	\image qtabletevent-tilt.png
2558
2559	\note The value is stored as a single-precision float.
2560
2561	\sa yTilt()
2562	*/
2563
2564	/*!
2565	\fn qreal QTabletEvent::yTilt() const
2566
2567	Returns the angle between the device (a pen, for example) and the
2568	perpendicular in the direction of the y axis.
2569	Positive values are towards the bottom of the tablet. The angle is
2570	within the range -60 to +60 degrees.
2571
2572	\note The value is stored as a single-precision float.
2573
2574	\sa xTilt()
2575	*/
2576
2577	/*!
2578	\fn QPoint QTabletEvent::pos() const
2579	\deprecated [6.0] Use position().toPoint() instead.
2580
2581	Returns the position of the device, relative to the widget that
2582	received the event.
2583
2584	If you move widgets around in response to mouse events, use
2585	globalPos() instead of this function.
2586
2587	\sa x(), y(), globalPos()
2588	*/
2589
2590	/*!
2591	\fn int QTabletEvent::x() const
2592	\deprecated [6.0] Use position().x() instead.
2593
2594	Returns the x position of the device, relative to the widget that
2595	received the event.
2596
2597	\sa y(), pos()
2598	*/
2599
2600	/*!
2601	\fn int QTabletEvent::y() const
2602	\deprecated [6.0] Use position().y() instead.
2603
2604	Returns the y position of the device, relative to the widget that
2605	received the event.
2606
2607	\sa x(), pos()
2608	*/
2609
2610	/*!
2611	\fn qreal QTabletEvent::z() const
2612
2613	Returns the z position of the device. Typically this is represented by a
2614	wheel on a 4D Mouse. If the device does not support a Z-axis, this value is
2615	always zero. This is \b not the same as pressure.
2616
2617	\note The value is stored as a single-precision float.
2618
2619	\sa pressure()
2620	*/
2621
2622	/*!
2623	\fn QPoint QTabletEvent::globalPos() const
2624	\deprecated [6.0] Use globalPosition().toPoint() instead.
2625
2626	Returns the global position of the device \e{at the time of the
2627	event}. This is important on asynchronous windows systems like X11;
2628	whenever you move your widgets around in response to mouse events,
2629	globalPos() can differ significantly from the current position
2630	QCursor::pos().
2631
2632	\sa globalX(), globalY()
2633	*/
2634
2635	/*!
2636	\fn int QTabletEvent::globalX() const
2637	\deprecated [6.0] Use globalPosition().x() instead.
2638
2639	Returns the global x position of the mouse pointer at the time of
2640	the event.
2641
2642	\sa globalY(), globalPos()
2643	*/
2644
2645	/*!
2646	\fn int QTabletEvent::globalY() const
2647	\deprecated [6.0] Use globalPosition().y() instead.
2648
2649	Returns the global y position of the tablet device at the time of
2650	the event.
2651
2652	\sa globalX(), globalPos()
2653	*/
2654
2655	/*!
2656	\fn qint64 QTabletEvent::uniqueId() const
2657	\deprecated [6.0] Use pointingDevice().uniqueId() instead.
2658
2659	Returns a unique ID for the current device, making it possible
2660	to differentiate between multiple devices being used at the same
2661	time on the tablet.
2662
2663	Support of this feature is dependent on the tablet.
2664
2665	Values for the same device may vary from OS to OS.
2666
2667	Later versions of the Wacom driver for Linux will now report
2668	the ID information. If you have a tablet that supports unique ID
2669	and are not getting the information on Linux, consider upgrading
2670	your driver.
2671
2672	As of Qt 4.2, the unique ID is the same regardless of the orientation
2673	of the pen. Earlier versions would report a different value when using
2674	the eraser-end versus the pen-end of the stylus on some OS's.
2675
2676	\sa pointerType()
2677	*/
2678
2679	/*!
2680	\fn const QPointF &QTabletEvent::posF() const
2681	\deprecated [6.0] Use position() instead.
2682
2683	Returns the position of the device, relative to the widget that
2684	received the event.
2685
2686	If you move widgets around in response to mouse events, use
2687	globalPosF() instead of this function.
2688
2689	\sa globalPosF()
2690	*/
2691
2692	/*!
2693	\fn const QPointF &QTabletEvent::globalPosF() const
2694	\deprecated [6.0] Use globalPosition() instead.
2695	Returns the global position of the device \e{at the time of the
2696	event}. This is important on asynchronous windows systems like X11;
2697	whenever you move your widgets around in response to mouse events,
2698	globalPosF() can differ significantly from the current position
2699	QCursor::pos().
2700
2701	\sa posF()
2702	*/
2703
2704	#endif // QT_CONFIG(tabletevent)
2705
2706	#ifndef QT_NO_GESTURES
2707	/*!
2708	\class QNativeGestureEvent
2709	\since 5.2
2710	\brief The QNativeGestureEvent class contains parameters that describe a gesture event.
2711	\inmodule QtGui
2712	\ingroup events
2713
2714	Native gesture events are generated by the operating system, typically by
2715	interpreting trackpad touch events. Gesture events are high-level events
2716	such as zoom, rotate or pan. Several types hold incremental values: that is,
2717	value() and delta() provide the difference from the previous event to the
2718	current event.
2719
2720	\table
2721	\header
2722	\li Event Type
2723	\li Description
2724	\li Touch sequence
2725	\row
2726	\li Qt::ZoomNativeGesture
2727	\li Magnification delta in percent.
2728	\li \macos and Wayland: Two-finger pinch.
2729	\row
2730	\li Qt::SmartZoomNativeGesture
2731	\li Boolean magnification state.
2732	\li \macos: Two-finger douple tap (trackpad) / One-finger douple tap (magic mouse).
2733	\row
2734	\li Qt::RotateNativeGesture
2735	\li Rotation delta in degrees.
2736	\li \macos and Wayland: Two-finger rotate.
2737	\row
2738	\li Qt::SwipeNativeGesture
2739	\li Swipe angle in degrees.
2740	\li \macos: Configurable in trackpad settings.
2741	\row
2742	\li Qt::PanNativeGesture
2743	\li Displacement delta in pixels.
2744	\li Wayland: Three or more fingers moving as a group, in any direction.
2745	\endtable
2746
2747	In addition, BeginNativeGesture and EndNativeGesture are sent before and after
2748	gesture event streams:
2749
2750	BeginNativeGesture
2751	ZoomNativeGesture
2752	ZoomNativeGesture
2753	ZoomNativeGesture
2754	EndNativeGesture
2755
2756	The event stream may include interleaved gestures of different types:
2757	for example the two-finger pinch gesture generates a stream of Zoom and
2758	Rotate events, and PanNativeGesture may sometimes be interleaved with
2759	those, depending on the platform.
2760
2761	Other types are standalone events: SmartZoomNativeGesture and
2762	SwipeNativeGesture occur only once each time the gesture is detected.
2763
2764	\note On a touchpad, moving two fingers as a group (the two-finger flick gesture)
2765	is usually reserved for scrolling; in that case, Qt generates QWheelEvents.
2766	This is the reason that three or more fingers are needed to generate a
2767	PanNativeGesture.
2768
2769	\sa Qt::NativeGestureType, QGestureEvent, QWheelEvent
2770	*/
2771
2772	#if QT_DEPRECATED_SINCE(6, 2)
2773	/*!
2774	\deprecated [6.2] Use the other constructor, because \a intValue is no longer stored separately.
2775
2776	Constructs a native gesture event of type \a type originating from \a device.
2777
2778	The points \a localPos, \a scenePos and \a globalPos specify the
2779	gesture position relative to the receiving widget or item,
2780	window, and screen or desktop, respectively.
2781
2782	\a realValue is the \macos event parameter, \a sequenceId and \a intValue are the Windows event parameters.
2783	\since 5.10
2784
2785	\note It's not possible to store realValue and \a intValue simultaneously:
2786	one or the other must be zero. If \a realValue == 0 and \a intValue != 0,
2787	it is stored in the same variable, such that value() returns the value
2788	given as \a intValue.
2789	*/
2790	QNativeGestureEvent::QNativeGestureEvent(Qt::NativeGestureType type, const QPointingDevice *device,
2791	const QPointF &localPos, const QPointF &scenePos,
2792	const QPointF &globalPos, qreal realValue, quint64 sequenceId,
2793	quint64 intValue)
2794	: QSinglePointEvent(QEvent::NativeGesture, device, localPos, scenePos, globalPos, Qt::NoButton,
2795	Qt::NoButton, Qt::NoModifier),
2796	m_sequenceId(sequenceId), m_realValue(realValue), m_gestureType(type)
2797	{
2798	if (qIsNull(d: realValue) && intValue != 0)
2799	m_realValue = intValue;
2800	}
2801	#endif // deprecated
2802
2803	/*!
2804	Constructs a native gesture event of type \a type originating from \a device
2805	describing a gesture at \a scenePos in which \a fingerCount fingers are involved.
2806
2807	The points \a localPos, \a scenePos and \a globalPos specify the gesture
2808	position relative to the receiving widget or item, window, and screen or
2809	desktop, respectively.
2810
2811	\a value has a gesture-dependent interpretation: for RotateNativeGesture or
2812	SwipeNativeGesture, it's an angle in degrees. For ZoomNativeGesture,
2813	\a value is an incremental scaling factor, usually much less than 1,
2814	indicating that the target item should have its scale adjusted like this:
2815	item.scale = item.scale * (1 + event.value)
2816
2817	For PanNativeGesture, \a delta gives the distance in pixels that the
2818	viewport, widget or item should be moved or panned.
2819
2820	\note The \a delta is stored in single precision (QVector2D), so \l delta()
2821	may return slightly different values in some cases. This is subject to change
2822	in future versions of Qt.
2823
2824	\since 6.2
2825	*/
2826	QNativeGestureEvent::QNativeGestureEvent(Qt::NativeGestureType type, const QPointingDevice *device, int fingerCount,
2827	const QPointF &localPos, const QPointF &scenePos,
2828	const QPointF &globalPos, qreal value, const QPointF &delta,
2829	quint64 sequenceId)
2830	: QSinglePointEvent(QEvent::NativeGesture, device, localPos, scenePos, globalPos, Qt::NoButton,
2831	Qt::NoButton, Qt::NoModifier),
2832	m_sequenceId(sequenceId), m_delta(delta), m_realValue(value), m_gestureType(type), m_fingerCount(fingerCount)
2833	{
2834	Q_ASSERT(fingerCount < 16); // we store it in 4 bits unsigned
2835	}
2836
2837	Q_IMPL_POINTER_EVENT(QNativeGestureEvent)
2838
2839	/*!
2840	\fn QNativeGestureEvent::gestureType() const
2841	\since 5.2
2842
2843	Returns the gesture type.
2844	*/
2845
2846	/*!
2847	\fn QNativeGestureEvent::fingerCount() const
2848	\since 6.2
2849
2850	Returns the number of fingers participating in the gesture, if known.
2851	When gestureType() is Qt::BeginNativeGesture or Qt::EndNativeGesture, often
2852	this information is unknown, and fingerCount() returns \c 0.
2853	*/
2854
2855	/*!
2856	\fn QNativeGestureEvent::value() const
2857	\since 5.2
2858
2859	Returns the gesture value. The value should be interpreted based on the
2860	gesture type. For example, a Zoom gesture provides a scale factor delta while a Rotate
2861	gesture provides a rotation delta.
2862
2863	\sa QNativeGestureEvent, gestureType()
2864	*/
2865
2866	/*!
2867	\fn QNativeGestureEvent::delta() const
2868	\since 6.2
2869
2870	Returns the distance moved since the previous event, in pixels.
2871	A Pan gesture provides the distance in pixels by which the target widget,
2872	item or viewport contents should be moved.
2873
2874	\sa QPanGesture::delta()
2875	*/
2876
2877	/*!
2878	\fn QPoint QNativeGestureEvent::globalPos() const
2879	\since 5.2
2880	\deprecated [6.0] Use globalPosition().toPoint() instead.
2881
2882	Returns the position of the gesture as a QPointF in screen coordinates
2883	*/
2884
2885	/*!
2886	\fn QPoint QNativeGestureEvent::pos() const
2887	\since 5.2
2888	\deprecated [6.0] Use position().toPoint() instead.
2889
2890	Returns the position of the mouse cursor, relative to the widget
2891	or item that received the event.
2892	*/
2893
2894	/*!
2895	\fn QPointF QNativeGestureEvent::localPos() const
2896	\since 5.2
2897	\deprecated [6.0] Use position() instead.
2898
2899	Returns the position of the gesture as a QPointF, relative to the
2900	widget or item that received the event.
2901	*/
2902
2903	/*!
2904	\fn QPointF QNativeGestureEvent::screenPos() const
2905	\since 5.2
2906	\deprecated [6.0] Use globalPosition() instead.
2907
2908	Returns the position of the gesture as a QPointF in screen coordinates.
2909	*/
2910
2911	/*!
2912	\fn QPointF QNativeGestureEvent::windowPos() const
2913	\since 5.2
2914	\deprecated [6.0] Use scenePosition() instead.
2915
2916	Returns the position of the gesture as a QPointF, relative to the
2917	window that received the event.
2918	*/
2919	#endif // QT_NO_GESTURES
2920
2921	#if QT_CONFIG(draganddrop)
2922	/*!
2923	Creates a QDragMoveEvent of the required \a type indicating
2924	that the mouse is at position \a pos given within a widget.
2925
2926	The mouse and keyboard states are specified by \a buttons and
2927	\a modifiers, and the \a actions describe the types of drag
2928	and drop operation that are possible.
2929	The drag data is passed as MIME-encoded information in \a data.
2930
2931	\warning Do not attempt to create a QDragMoveEvent yourself.
2932	These objects rely on Qt's internal state.
2933	*/
2934	QDragMoveEvent::QDragMoveEvent(const QPoint& pos, Qt::DropActions actions, const QMimeData *data,
2935	Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers, Type type)
2936	: QDropEvent(pos, actions, data, buttons, modifiers, type)
2937	, m_rect(pos, QSize(1, 1))
2938	{}
2939
2940	Q_IMPL_EVENT_COMMON(QDragMoveEvent)
2941
2942	/*!
2943	\fn void QDragMoveEvent::accept(const QRect &rectangle)
2944
2945	The same as accept(), but also notifies that future moves will
2946	also be acceptable if they remain within the \a rectangle
2947	given on the widget. This can improve performance, but may
2948	also be ignored by the underlying system.
2949
2950	If the rectangle is empty, drag move events will be sent
2951	continuously. This is useful if the source is scrolling in a
2952	timer event.
2953	*/
2954
2955	/*!
2956	\fn void QDragMoveEvent::accept()
2957
2958	\overload
2959
2960	Calls QDropEvent::accept().
2961	*/
2962
2963	/*!
2964	\fn void QDragMoveEvent::ignore()
2965
2966	\overload
2967
2968	Calls QDropEvent::ignore().
2969	*/
2970
2971	/*!
2972	\fn void QDragMoveEvent::ignore(const QRect &rectangle)
2973
2974	The opposite of the accept(const QRect&) function.
2975	Moves within the \a rectangle are not acceptable, and will be
2976	ignored.
2977	*/
2978
2979	/*!
2980	\fn QRect QDragMoveEvent::answerRect() const
2981
2982	Returns the rectangle in the widget where the drop will occur if accepted.
2983	You can use this information to restrict drops to certain places on the
2984	widget.
2985	*/
2986
2987
2988	/*!
2989	\class QDropEvent
2990	\ingroup events
2991	\ingroup draganddrop
2992	\inmodule QtGui
2993
2994	\brief The QDropEvent class provides an event which is sent when a
2995	drag and drop action is completed.
2996
2997	When a widget \l{QWidget::setAcceptDrops()}{accepts drop events}, it will
2998	receive this event if it has accepted the most recent QDragEnterEvent or
2999	QDragMoveEvent sent to it.
3000
3001	The drop event contains a proposed action, available from proposedAction(), for
3002	the widget to either accept or ignore. If the action can be handled by the
3003	widget, you should call the acceptProposedAction() function. Since the
3004	proposed action can be a combination of \l Qt::DropAction values, it may be
3005	useful to either select one of these values as a default action or ask
3006	the user to select their preferred action.
3007
3008	If the proposed drop action is not suitable, perhaps because your custom
3009	widget does not support that action, you can replace it with any of the
3010	\l{possibleActions()}{possible drop actions} by calling setDropAction()
3011	with your preferred action. If you set a value that is not present in the
3012	bitwise OR combination of values returned by possibleActions(), the default
3013	copy action will be used. Once a replacement drop action has been set, call
3014	accept() instead of acceptProposedAction() to complete the drop operation.
3015
3016	The mimeData() function provides the data dropped on the widget in a QMimeData
3017	object. This contains information about the MIME type of the data in addition to
3018	the data itself.
3019
3020	\sa QMimeData, QDrag, {Drag and Drop}
3021	*/
3022
3023	/*!
3024	\fn const QMimeData *QDropEvent::mimeData() const
3025
3026	Returns the data that was dropped on the widget and its associated MIME
3027	type information.
3028	*/
3029
3030	// ### pos is in which coordinate system?
3031	/*!
3032	Constructs a drop event of a certain \a type corresponding to a
3033	drop at the point specified by \a pos in the destination widget's
3034	coordinate system.
3035
3036	The \a actions indicate which types of drag and drop operation can
3037	be performed, and the drag data is stored as MIME-encoded data in \a data.
3038
3039	The states of the mouse buttons and keyboard modifiers at the time of
3040	the drop are specified by \a buttons and \a modifiers.
3041	*/
3042	QDropEvent::QDropEvent(const QPointF& pos, Qt::DropActions actions, const QMimeData *data,
3043	Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers, Type type)
3044	: QEvent(type), m_pos(pos), m_mouseState(buttons),
3045	m_modState(modifiers), m_actions(actions),
3046	m_data(data)
3047	{
3048	m_defaultAction = m_dropAction =
3049	QGuiApplicationPrivate::platformIntegration()->drag()->defaultAction(possibleActions: m_actions, modifiers);
3050	ignore();
3051	}
3052
3053	Q_IMPL_EVENT_COMMON(QDropEvent)
3054
3055
3056	/*!
3057	If the source of the drag operation is a widget in this
3058	application, this function returns that source; otherwise it
3059	returns \nullptr. The source of the operation is the first parameter to
3060	the QDrag object used instantiate the drag.
3061
3062	This is useful if your widget needs special behavior when dragging
3063	to itself.
3064
3065	\sa QDrag::QDrag()
3066	*/
3067	QObject* QDropEvent::source() const
3068	{
3069	if (const QDragManager *manager = QDragManager::self())
3070	return manager->source();
3071	return nullptr;
3072	}
3073
3074
3075	void QDropEvent::setDropAction(Qt::DropAction action)
3076	{
3077	if (!(action & m_actions) && action != Qt::IgnoreAction)
3078	action = m_defaultAction;
3079	m_dropAction = action;
3080	}
3081
3082	/*!
3083	\fn QPoint QDropEvent::pos() const
3084	\deprecated [6.0] Use position().toPoint() instead.
3085
3086	Returns the position where the drop was made.
3087	*/
3088
3089	/*!
3090	\fn const QPointF& QDropEvent::posF() const
3091	\deprecated [6.0] Use position() instead.
3092
3093	Returns the position where the drop was made.
3094	*/
3095
3096	/*!
3097	\fn QPointF QDropEvent::position() const
3098	\since 6.0
3099
3100	Returns the position where the drop was made.
3101	*/
3102
3103	/*!
3104	\fn Qt::MouseButtons QDropEvent::mouseButtons() const
3105	\deprecated [6.0] Use buttons() instead.
3106
3107	Returns the mouse buttons that are pressed.
3108	*/
3109
3110	/*!
3111	\fn Qt::MouseButtons QDropEvent::buttons() const
3112	\since 6.0
3113
3114	Returns the mouse buttons that are pressed.
3115	*/
3116
3117	/*!
3118	\fn Qt::KeyboardModifiers QDropEvent::keyboardModifiers() const
3119	\deprecated [6.0] Use modifiers() instead.
3120
3121	Returns the modifier keys that are pressed.
3122	*/
3123
3124	/*!
3125	\fn Qt::KeyboardModifiers QDropEvent::modifiers() const
3126	\since 6.0
3127
3128	Returns the modifier keys that are pressed.
3129	*/
3130
3131	/*!
3132	\fn void QDropEvent::setDropAction(Qt::DropAction action)
3133
3134	Sets the \a action to be performed on the data by the target.
3135	Use this to override the \l{proposedAction()}{proposed action}
3136	with one of the \l{possibleActions()}{possible actions}.
3137
3138	If you set a drop action that is not one of the possible actions, the
3139	drag and drop operation will default to a copy operation.
3140
3141	Once you have supplied a replacement drop action, call accept()
3142	instead of acceptProposedAction().
3143
3144	\sa dropAction()
3145	*/
3146
3147	/*!
3148	\fn Qt::DropAction QDropEvent::dropAction() const
3149
3150	Returns the action to be performed on the data by the target. This may be
3151	different from the action supplied in proposedAction() if you have called
3152	setDropAction() to explicitly choose a drop action.
3153
3154	\sa setDropAction()
3155	*/
3156
3157	/*!
3158	\fn Qt::DropActions QDropEvent::possibleActions() const
3159
3160	Returns an OR-combination of possible drop actions.
3161
3162	\sa dropAction()
3163	*/
3164
3165	/*!
3166	\fn Qt::DropAction QDropEvent::proposedAction() const
3167
3168	Returns the proposed drop action.
3169
3170	\sa dropAction()
3171	*/
3172
3173	/*!
3174	\fn void QDropEvent::acceptProposedAction()
3175
3176	Sets the drop action to be the proposed action.
3177
3178	\sa setDropAction(), proposedAction(), {QEvent::accept()}{accept()}
3179	*/
3180
3181	/*!
3182	\class QDragEnterEvent
3183	\brief The QDragEnterEvent class provides an event which is sent
3184	to a widget when a drag and drop action enters it.
3185
3186	\ingroup events
3187	\ingroup draganddrop
3188	\inmodule QtGui
3189
3190	A widget must accept this event in order to receive the \l
3191	{QDragMoveEvent}{drag move events} that are sent while the drag
3192	and drop action is in progress. The drag enter event is always
3193	immediately followed by a drag move event.
3194
3195	QDragEnterEvent inherits most of its functionality from
3196	QDragMoveEvent, which in turn inherits most of its functionality
3197	from QDropEvent.
3198
3199	\sa QDragLeaveEvent, QDragMoveEvent, QDropEvent
3200	*/
3201
3202	/*!
3203	Constructs a QDragEnterEvent that represents a drag entering a
3204	widget at the given \a point with mouse and keyboard states specified by
3205	\a buttons and \a modifiers.
3206
3207	The drag data is passed as MIME-encoded information in \a data, and the
3208	specified \a actions describe the possible types of drag and drop
3209	operation that can be performed.
3210
3211	\warning Do not create a QDragEnterEvent yourself since these
3212	objects rely on Qt's internal state.
3213	*/
3214	QDragEnterEvent::QDragEnterEvent(const QPoint& point, Qt::DropActions actions, const QMimeData *data,
3215	Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers)
3216	: QDragMoveEvent(point, actions, data, buttons, modifiers, DragEnter)
3217	{}
3218
3219	Q_IMPL_EVENT_COMMON(QDragEnterEvent)
3220
3221	/*!
3222	\class QDragMoveEvent
3223	\brief The QDragMoveEvent class provides an event which is sent while a drag and drop action is in progress.
3224
3225	\ingroup events
3226	\ingroup draganddrop
3227	\inmodule QtGui
3228
3229	A widget will receive drag move events repeatedly while the drag
3230	is within its boundaries, if it accepts
3231	\l{QWidget::setAcceptDrops()}{drop events} and \l
3232	{QWidget::dragEnterEvent()}{enter events}. The widget should
3233	examine the event to see what kind of \l{mimeData()}{data} it
3234	provides, and call the accept() function to accept the drop if appropriate.
3235
3236	The rectangle supplied by the answerRect() function can be used to restrict
3237	drops to certain parts of the widget. For example, we can check whether the
3238	rectangle intersects with the geometry of a certain child widget and only
3239	call \l{QDropEvent::acceptProposedAction()}{acceptProposedAction()} if that
3240	is the case.
3241
3242	Note that this class inherits most of its functionality from
3243	QDropEvent.
3244
3245	\sa QDragEnterEvent, QDragLeaveEvent, QDropEvent
3246	*/
3247
3248	/*!
3249	\class QDragLeaveEvent
3250	\brief The QDragLeaveEvent class provides an event that is sent to a widget when a drag and drop action leaves it.
3251
3252	\ingroup events
3253	\ingroup draganddrop
3254	\inmodule QtGui
3255
3256	This event is always preceded by a QDragEnterEvent and a series
3257	of \l{QDragMoveEvent}s. It is not sent if a QDropEvent is sent
3258	instead.
3259
3260	\sa QDragEnterEvent, QDragMoveEvent, QDropEvent
3261	*/
3262
3263	/*!
3264	Constructs a QDragLeaveEvent.
3265
3266	\warning Do not create a QDragLeaveEvent yourself since these
3267	objects rely on Qt's internal state.
3268	*/
3269	QDragLeaveEvent::QDragLeaveEvent()
3270	: QEvent(DragLeave)
3271	{}
3272
3273	Q_IMPL_EVENT_COMMON(QDragLeaveEvent)
3274
3275	#endif // QT_CONFIG(draganddrop)
3276
3277	/*!
3278	\class QHelpEvent
3279	\brief The QHelpEvent class provides an event that is used to request helpful information
3280	about a particular point in a widget.
3281
3282	\ingroup events
3283	\ingroup helpsystem
3284	\inmodule QtGui
3285
3286	This event can be intercepted in applications to provide tooltips
3287	or "What's This?" help for custom widgets. The type() can be
3288	either QEvent::ToolTip or QEvent::WhatsThis.
3289
3290	\sa QToolTip, QWhatsThis, QStatusTipEvent, QWhatsThisClickedEvent
3291	*/
3292
3293	/*!
3294	Constructs a help event with the given \a type corresponding to the
3295	widget-relative position specified by \a pos and the global position
3296	specified by \a globalPos.
3297
3298	\a type must be either QEvent::ToolTip or QEvent::WhatsThis.
3299
3300	\sa pos(), globalPos()
3301	*/
3302	QHelpEvent::QHelpEvent(Type type, const QPoint &pos, const QPoint &globalPos)
3303	: QEvent(type), m_pos(pos), m_globalPos(globalPos)
3304	{}
3305
3306	/*!
3307	\fn int QHelpEvent::x() const
3308
3309	Same as pos().x().
3310
3311	\sa y(), pos(), globalPos()
3312	*/
3313
3314	/*!
3315	\fn int QHelpEvent::y() const
3316
3317	Same as pos().y().
3318
3319	\sa x(), pos(), globalPos()
3320	*/
3321
3322	/*!
3323	\fn int QHelpEvent::globalX() const
3324
3325	Same as globalPos().x().
3326
3327	\sa x(), globalY(), globalPos()
3328	*/
3329
3330	/*!
3331	\fn int QHelpEvent::globalY() const
3332
3333	Same as globalPos().y().
3334
3335	\sa y(), globalX(), globalPos()
3336	*/
3337
3338	/*!
3339	\fn const QPoint &QHelpEvent::pos() const
3340
3341	Returns the mouse cursor position when the event was generated,
3342	relative to the widget to which the event is dispatched.
3343
3344	\sa globalPos(), x(), y()
3345	*/
3346
3347	/*!
3348	\fn const QPoint &QHelpEvent::globalPos() const
3349
3350	Returns the mouse cursor position when the event was generated
3351	in global coordinates.
3352
3353	\sa pos(), globalX(), globalY()
3354	*/
3355
3356	Q_IMPL_EVENT_COMMON(QHelpEvent)
3357
3358	#ifndef QT_NO_STATUSTIP
3359
3360	/*!
3361	\class QStatusTipEvent
3362	\brief The QStatusTipEvent class provides an event that is used to show messages in a status bar.
3363
3364	\ingroup events
3365	\ingroup helpsystem
3366	\inmodule QtGui
3367
3368	Status tips can be set on a widget using the
3369	QWidget::setStatusTip() function. They are shown in the status
3370	bar when the mouse cursor enters the widget. For example:
3371
3372	\table 100%
3373	\row
3374	\li
3375	\snippet qstatustipevent/main.cpp 1
3376	\dots
3377	\snippet qstatustipevent/main.cpp 3
3378	\li
3379	\image qstatustipevent-widget.png Widget with status tip.
3380	\endtable
3381
3382	Status tips can also be set on actions using the
3383	QAction::setStatusTip() function:
3384
3385	\table 100%
3386	\row
3387	\li
3388	\snippet qstatustipevent/main.cpp 0
3389	\snippet qstatustipevent/main.cpp 2
3390	\dots
3391	\snippet qstatustipevent/main.cpp 3
3392	\li
3393	\image qstatustipevent-action.png Action with status tip.
3394	\endtable
3395
3396	Finally, status tips are supported for the item view classes
3397	through the Qt::StatusTipRole enum value.
3398
3399	\sa QStatusBar, QHelpEvent, QWhatsThisClickedEvent
3400	*/
3401
3402	/*!
3403	Constructs a status tip event with the text specified by \a tip.
3404
3405	\sa tip()
3406	*/
3407	QStatusTipEvent::QStatusTipEvent(const QString &tip)
3408	: QEvent(StatusTip), m_tip(tip)
3409	{}
3410
3411	Q_IMPL_EVENT_COMMON(QStatusTipEvent)
3412
3413	/*!
3414	\fn QString QStatusTipEvent::tip() const
3415
3416	Returns the message to show in the status bar.
3417
3418	\sa QStatusBar::showMessage()
3419	*/
3420
3421	#endif // QT_NO_STATUSTIP
3422
3423	#if QT_CONFIG(whatsthis)
3424
3425	/*!
3426	\class QWhatsThisClickedEvent
3427	\brief The QWhatsThisClickedEvent class provides an event that
3428	can be used to handle hyperlinks in a "What's This?" text.
3429
3430	\ingroup events
3431	\ingroup helpsystem
3432	\inmodule QtGui
3433
3434	\sa QWhatsThis, QHelpEvent, QStatusTipEvent
3435	*/
3436
3437	/*!
3438	Constructs an event containing a URL specified by \a href when a link
3439	is clicked in a "What's This?" message.
3440
3441	\sa href()
3442	*/
3443	QWhatsThisClickedEvent::QWhatsThisClickedEvent(const QString &href)
3444	: QEvent(WhatsThisClicked), m_href(href)
3445	{}
3446
3447	Q_IMPL_EVENT_COMMON(QWhatsThisClickedEvent)
3448
3449	/*!
3450	\fn QString QWhatsThisClickedEvent::href() const
3451
3452	Returns the URL that was clicked by the user in the "What's
3453	This?" text.
3454	*/
3455
3456	#endif // QT_CONFIG(whatsthis)
3457
3458	#ifndef QT_NO_ACTION
3459
3460	/*!
3461	\class QActionEvent
3462	\brief The QActionEvent class provides an event that is generated
3463	when a QAction is added, removed, or changed.
3464
3465	\ingroup events
3466	\inmodule QtGui
3467
3468	Actions can be added to controls, for example by using QWidget::addAction().
3469	This generates an \l ActionAdded event, which you can handle to provide
3470	custom behavior. For example, QToolBar reimplements
3471	QWidget::actionEvent() to create \l{QToolButton}s for the
3472	actions.
3473
3474	\sa QAction, QWidget::addAction(), QWidget::removeAction(), QWidget::actions()
3475	*/
3476
3477	/*!
3478	Constructs an action event. The \a type can be \l ActionChanged,
3479	\l ActionAdded, or \l ActionRemoved.
3480
3481	\a action is the action that is changed, added, or removed. If \a
3482	type is ActionAdded, the action is to be inserted before the
3483	action \a before. If \a before is \nullptr, the action is appended.
3484	*/
3485	QActionEvent::QActionEvent(int type, QAction *action, QAction *before)
3486	: QEvent(static_cast<QEvent::Type>(type)), m_action(action), m_before(before)
3487	{}
3488
3489	Q_IMPL_EVENT_COMMON(QActionEvent)
3490
3491	/*!
3492	\fn QAction *QActionEvent::action() const
3493
3494	Returns the action that is changed, added, or removed.
3495
3496	\sa before()
3497	*/
3498
3499	/*!
3500	\fn QAction *QActionEvent::before() const
3501
3502	If type() is \l ActionAdded, returns the action that should
3503	appear before action(). If this function returns \nullptr, the action
3504	should be appended to already existing actions on the same
3505	widget.
3506
3507	\sa action(), QWidget::actions()
3508	*/
3509
3510	#endif // QT_NO_ACTION
3511
3512	/*!
3513	\class QHideEvent
3514	\brief The QHideEvent class provides an event which is sent after a widget is hidden.
3515
3516	\ingroup events
3517	\inmodule QtGui
3518
3519	This event is sent just before QWidget::hide() returns, and also
3520	when a top-level window has been hidden (iconified) by the user.
3521
3522	If spontaneous() is true, the event originated outside the
3523	application. In this case, the user hid the window using the
3524	window manager controls, either by iconifying the window or by
3525	switching to another virtual desktop where the window is not
3526	visible. The window will become hidden but not withdrawn. If the
3527	window was iconified, QWidget::isMinimized() returns \c true.
3528
3529	\sa QShowEvent
3530	*/
3531
3532	/*!
3533	Constructs a QHideEvent.
3534	*/
3535	QHideEvent::QHideEvent()
3536	: QEvent(Hide)
3537	{}
3538
3539	Q_IMPL_EVENT_COMMON(QHideEvent)
3540
3541	/*!
3542	\class QShowEvent
3543	\brief The QShowEvent class provides an event that is sent when a widget is shown.
3544
3545	\ingroup events
3546	\inmodule QtGui
3547
3548	There are two kinds of show events: show events caused by the
3549	window system (spontaneous), and internal show events. Spontaneous (QEvent::spontaneous())
3550	show events are sent just after the window system shows the
3551	window; they are also sent when a top-level window is redisplayed
3552	after being iconified. Internal show events are delivered just
3553	before the widget becomes visible.
3554
3555	\sa QHideEvent
3556	*/
3557
3558	/*!
3559	Constructs a QShowEvent.
3560	*/
3561	QShowEvent::QShowEvent()
3562	: QEvent(Show)
3563	{}
3564
3565	Q_IMPL_EVENT_COMMON(QShowEvent)
3566
3567	/*!
3568	\class QFileOpenEvent
3569	\brief The QFileOpenEvent class provides an event that will be
3570	sent when there is a request to open a file or a URL.
3571
3572	\ingroup events
3573	\inmodule QtGui
3574
3575	File open events will be sent to the QApplication::instance()
3576	when the operating system requests that a file or URL should be opened.
3577	This is a high-level event that can be caused by different user actions
3578	depending on the user's desktop environment; for example, double
3579	clicking on an file icon in the Finder on \macos.
3580
3581	This event is only used to notify the application of a request.
3582	It may be safely ignored.
3583
3584	\note This class is currently supported for \macos only.
3585
3586	\section1 \macos Example
3587
3588	In order to trigger the event on \macos, the application must be configured
3589	to let the OS know what kind of file(s) it should react on.
3590
3591	For example, the following \c Info.plist file declares that the application
3592	can act as a viewer for files with a PNG extension:
3593
3594	\snippet qfileopenevent/Info.plist Custom Info.plist
3595
3596	The following implementation of a QApplication subclass shows how to handle
3597	QFileOpenEvent to open the file that was, for example, dropped on the Dock
3598	icon of the application.
3599
3600	\snippet qfileopenevent/main.cpp QApplication subclass
3601
3602	Note how \c{QFileOpenEvent::file()} is not guaranteed to be the name of a
3603	local file that can be opened using QFile. The contents of the string depend
3604	on the source application.
3605	*/
3606
3607	/*!
3608	\internal
3609
3610	Constructs a file open event for the given \a file.
3611	*/
3612	QFileOpenEvent::QFileOpenEvent(const QString &file)
3613	: QEvent(FileOpen), m_file(file), m_url(QUrl::fromLocalFile(localfile: file))
3614	{
3615	}
3616
3617	/*!
3618	\internal
3619
3620	Constructs a file open event for the given \a url.
3621	*/
3622	QFileOpenEvent::QFileOpenEvent(const QUrl &url)
3623	: QEvent(FileOpen), m_file(url.toLocalFile()), m_url(url)
3624	{
3625	}
3626
3627	Q_IMPL_EVENT_COMMON(QFileOpenEvent)
3628
3629	/*!
3630	\fn QString QFileOpenEvent::file() const
3631
3632	Returns the name of the file that the application should open.
3633
3634	This is not guaranteed to be the path to a local file.
3635	*/
3636
3637	/*!
3638	\fn QUrl QFileOpenEvent::url() const
3639
3640	Returns the url that the application should open.
3641
3642	\since 4.6
3643	*/
3644
3645	#if QT_DEPRECATED_SINCE(6, 6)
3646	/*!
3647	\fn bool QFileOpenEvent::openFile(QFile &file, QIODevice::OpenMode flags) const
3648	\deprecated [6.6] interpret the string returned by file()
3649
3650	Opens a QFile on the \a file referenced by this event in the mode specified
3651	by \a flags. Returns \c true if successful; otherwise returns \c false.
3652
3653	This is necessary as some files cannot be opened by name, but require specific
3654	information stored in this event.
3655
3656	\since 4.8
3657	*/
3658	bool QFileOpenEvent::openFile(QFile &file, QIODevice::OpenMode flags) const
3659	{
3660	file.setFileName(m_file);
3661	return file.open(flags);
3662	}
3663	#endif
3664
3665	#ifndef QT_NO_TOOLBAR
3666	/*!
3667	\internal
3668	\class QToolBarChangeEvent
3669	\brief The QToolBarChangeEvent class provides an event that is
3670	sent whenever a the toolbar button is clicked on \macos.
3671
3672	\ingroup events
3673	\inmodule QtGui
3674
3675	The QToolBarChangeEvent is sent when the toolbar button is clicked. On
3676	\macos, this is the long oblong button on the right side of the window
3677	title bar. The default implementation is to toggle the appearance (hidden or
3678	shown) of the associated toolbars for the window.
3679	*/
3680
3681	/*!
3682	\internal
3683
3684	Construct a QToolBarChangeEvent given the current button state in \a state.
3685	*/
3686	QToolBarChangeEvent::QToolBarChangeEvent(bool t)
3687	: QEvent(ToolBarChange), m_toggle(t)
3688	{}
3689
3690	Q_IMPL_EVENT_COMMON(QToolBarChangeEvent)
3691
3692	/*!
3693	\fn bool QToolBarChangeEvent::toggle() const
3694	\internal
3695	*/
3696
3697	/*
3698	\fn Qt::ButtonState QToolBarChangeEvent::state() const
3699
3700	Returns the keyboard modifier flags at the time of the event.
3701
3702	The returned value is a selection of the following values,
3703	combined using the OR operator:
3704	Qt::ShiftButton, Qt::ControlButton, Qt::MetaButton, and Qt::AltButton.
3705	*/
3706
3707	#endif // QT_NO_TOOLBAR
3708
3709	#if QT_CONFIG(shortcut)
3710
3711	/*!
3712	Constructs a shortcut event for the given \a key press,
3713	associated with the QShortcut ID \a id.
3714
3715	\deprecated use the other constructor
3716
3717	\a ambiguous specifies whether there is more than one QShortcut
3718	for the same key sequence.
3719	*/
3720	QShortcutEvent::QShortcutEvent(const QKeySequence &key, int id, bool ambiguous)
3721	: QEvent(Shortcut), m_sequence(key), m_shortcutId(id), m_ambiguous(ambiguous)
3722	{
3723	}
3724
3725	/*!
3726	Constructs a shortcut event for the given \a key press,
3727	associated with the QShortcut \a shortcut.
3728	\since 6.5
3729
3730	\a ambiguous specifies whether there is more than one QShortcut
3731	for the same key sequence.
3732	*/
3733	QShortcutEvent::QShortcutEvent(const QKeySequence &key, const QShortcut *shortcut, bool ambiguous)
3734	: QEvent(Shortcut), m_sequence(key), m_shortcutId(0), m_ambiguous(ambiguous)
3735	{
3736	if (shortcut) {
3737	auto priv = static_cast<const QShortcutPrivate *>(QShortcutPrivate::get(o: shortcut));
3738	auto index = priv->sc_sequences.indexOf(t: key);
3739	if (index < 0) {
3740	qWarning() << "Given QShortcut does not contain key-sequence " << key;
3741	return;
3742	}
3743	m_shortcutId = priv->sc_ids[index];
3744	}
3745	}
3746
3747	Q_IMPL_EVENT_COMMON(QShortcutEvent)
3748
3749	#endif // QT_CONFIG(shortcut)
3750
3751	#ifndef QT_NO_DEBUG_STREAM
3752
3753	static inline void formatTouchEvent(QDebug d, const QTouchEvent &t)
3754	{
3755	d << "QTouchEvent(";
3756	QtDebugUtils::formatQEnum(debug&: d, value: t.type());
3757	d << " device: " << t.device()->name();
3758	d << " states: ";
3759	QtDebugUtils::formatQFlags(debug&: d, value: t.touchPointStates());
3760	d << ", " << t.points().size() << " points: " << t.points() << ')';
3761	}
3762
3763	static void formatUnicodeString(QDebug d, const QString &s)
3764	{
3765	d << '"' << Qt::hex;
3766	for (int i = 0; i < s.size(); ++i) {
3767	if (i)
3768	d << ',';
3769	d << "U+" << s.at(i).unicode();
3770	}
3771	d << Qt::dec << '"';
3772	}
3773
3774	static QDebug operator<<(QDebug dbg, const QInputMethodEvent::Attribute &attr)
3775	{
3776	dbg << "[type= " << attr.type << ", start=" << attr.start << ", length=" << attr.length
3777	<< ", value=" << attr.value << ']';
3778	return dbg;
3779	}
3780
3781	static inline void formatInputMethodEvent(QDebug d, const QInputMethodEvent *e)
3782	{
3783	d << "QInputMethodEvent(";
3784	if (!e->preeditString().isEmpty()) {
3785	d << "preedit=";
3786	formatUnicodeString(d, s: e->preeditString());
3787	}
3788	if (!e->commitString().isEmpty()) {
3789	d << ", commit=";
3790	formatUnicodeString(d, s: e->commitString());
3791	}
3792	if (e->replacementLength()) {
3793	d << ", replacementStart=" << e->replacementStart() << ", replacementLength="
3794	<< e->replacementLength();
3795	}
3796	const auto attributes = e->attributes();
3797	auto it = attributes.cbegin();
3798	const auto end = attributes.cend();
3799	if (it != end) {
3800	d << ", attributes= {";
3801	d << *it;
3802	++it;
3803	for (; it != end; ++it)
3804	d << ',' << *it;
3805	d << '}';
3806	}
3807	d << ')';
3808	}
3809
3810	static inline void formatInputMethodQueryEvent(QDebug d, const QInputMethodQueryEvent *e)
3811	{
3812	QDebugStateSaver saver(d);
3813	d.noquote();
3814	const Qt::InputMethodQueries queries = e->queries();
3815	d << "QInputMethodQueryEvent(queries=" << Qt::showbase << Qt::hex << int(queries)
3816	<< Qt::noshowbase << Qt::dec << ", {";
3817	for (unsigned mask = 1; mask <= Qt::ImInputItemClipRectangle; mask<<=1) {
3818	if (queries & mask) {
3819	const Qt::InputMethodQuery query = static_cast<Qt::InputMethodQuery>(mask);
3820	const QVariant value = e->value(query);
3821	if (value.isValid()) {
3822	d << '[';
3823	QtDebugUtils::formatQEnum(debug&: d, value: query);
3824	d << '=';
3825	if (query == Qt::ImHints)
3826	QtDebugUtils::formatQFlags(debug&: d, value: Qt::InputMethodHints(value.toInt()));
3827	else
3828	d << value.toString();
3829	d << "],";
3830	}
3831	}
3832	}
3833	d << "})";
3834	}
3835
3836	static const char *eventClassName(QEvent::Type t)
3837	{
3838	switch (t) {
3839	case QEvent::ActionAdded:
3840	case QEvent::ActionRemoved:
3841	case QEvent::ActionChanged:
3842	return "QActionEvent";
3843	case QEvent::MouseButtonPress:
3844	case QEvent::MouseButtonRelease:
3845	case QEvent::MouseButtonDblClick:
3846	case QEvent::MouseMove:
3847	case QEvent::NonClientAreaMouseMove:
3848	case QEvent::NonClientAreaMouseButtonPress:
3849	case QEvent::NonClientAreaMouseButtonRelease:
3850	case QEvent::NonClientAreaMouseButtonDblClick:
3851	return "QMouseEvent";
3852	case QEvent::DragEnter:
3853	return "QDragEnterEvent";
3854	case QEvent::DragMove:
3855	return "QDragMoveEvent";
3856	case QEvent::Drop:
3857	return "QDropEvent";
3858	case QEvent::KeyPress:
3859	case QEvent::KeyRelease:
3860	case QEvent::ShortcutOverride:
3861	return "QKeyEvent";
3862	case QEvent::FocusIn:
3863	case QEvent::FocusOut:
3864	case QEvent::FocusAboutToChange:
3865	return "QFocusEvent";
3866	case QEvent::ChildAdded:
3867	case QEvent::ChildPolished:
3868	case QEvent::ChildRemoved:
3869	return "QChildEvent";
3870	case QEvent::Paint:
3871	return "QPaintEvent";
3872	case QEvent::Move:
3873	return "QMoveEvent";
3874	case QEvent::Resize:
3875	return "QResizeEvent";
3876	case QEvent::Show:
3877	return "QShowEvent";
3878	case QEvent::Hide:
3879	return "QHideEvent";
3880	case QEvent::Enter:
3881	return "QEnterEvent";
3882	case QEvent::Close:
3883	return "QCloseEvent";
3884	case QEvent::FileOpen:
3885	return "QFileOpenEvent";
3886	#ifndef QT_NO_GESTURES
3887	case QEvent::NativeGesture:
3888	return "QNativeGestureEvent";
3889	case QEvent::Gesture:
3890	case QEvent::GestureOverride:
3891	return "QGestureEvent";
3892	#endif
3893	case QEvent::HoverEnter:
3894	case QEvent::HoverLeave:
3895	case QEvent::HoverMove:
3896	return "QHoverEvent";
3897	case QEvent::TabletEnterProximity:
3898	case QEvent::TabletLeaveProximity:
3899	case QEvent::TabletPress:
3900	case QEvent::TabletMove:
3901	case QEvent::TabletRelease:
3902	return "QTabletEvent";
3903	case QEvent::StatusTip:
3904	return "QStatusTipEvent";
3905	case QEvent::ToolTip:
3906	return "QHelpEvent";
3907	case QEvent::WindowStateChange:
3908	return "QWindowStateChangeEvent";
3909	case QEvent::Wheel:
3910	return "QWheelEvent";
3911	case QEvent::TouchBegin:
3912	case QEvent::TouchUpdate:
3913	case QEvent::TouchEnd:
3914	return "QTouchEvent";
3915	case QEvent::Shortcut:
3916	return "QShortcutEvent";
3917	case QEvent::InputMethod:
3918	return "QInputMethodEvent";
3919	case QEvent::InputMethodQuery:
3920	return "QInputMethodQueryEvent";
3921	case QEvent::OrientationChange:
3922	return "QScreenOrientationChangeEvent";
3923	case QEvent::ScrollPrepare:
3924	return "QScrollPrepareEvent";
3925	case QEvent::Scroll:
3926	return "QScrollEvent";
3927	case QEvent::GraphicsSceneMouseMove:
3928	case QEvent::GraphicsSceneMousePress:
3929	case QEvent::GraphicsSceneMouseRelease:
3930	case QEvent::GraphicsSceneMouseDoubleClick:
3931	return "QGraphicsSceneMouseEvent";
3932	case QEvent::GraphicsSceneContextMenu:
3933	case QEvent::GraphicsSceneHoverEnter:
3934	case QEvent::GraphicsSceneHoverMove:
3935	case QEvent::GraphicsSceneHoverLeave:
3936	case QEvent::GraphicsSceneHelp:
3937	case QEvent::GraphicsSceneDragEnter:
3938	case QEvent::GraphicsSceneDragMove:
3939	case QEvent::GraphicsSceneDragLeave:
3940	case QEvent::GraphicsSceneDrop:
3941	case QEvent::GraphicsSceneWheel:
3942	return "QGraphicsSceneEvent";
3943	case QEvent::Timer:
3944	return "QTimerEvent";
3945	case QEvent::PlatformSurface:
3946	return "QPlatformSurfaceEvent";
3947	default:
3948	break;
3949	}
3950	return "QEvent";
3951	}
3952
3953	# if QT_CONFIG(draganddrop)
3954
3955	static void formatDropEvent(QDebug d, const QDropEvent *e)
3956	{
3957	const QEvent::Type type = e->type();
3958	d << eventClassName(t: type) << "(dropAction=";
3959	QtDebugUtils::formatQEnum(debug&: d, value: e->dropAction());
3960	d << ", proposedAction=";
3961	QtDebugUtils::formatQEnum(debug&: d, value: e->proposedAction());
3962	d << ", possibleActions=";
3963	QtDebugUtils::formatQFlags(debug&: d, value: e->possibleActions());
3964	d << ", posF=";
3965	QtDebugUtils::formatQPoint(debug&: d, point: e->position());
3966	if (type == QEvent::DragMove || type == QEvent::DragEnter)
3967	d << ", answerRect=" << static_cast<const QDragMoveEvent *>(e)->answerRect();
3968	d << ", formats=" << e->mimeData()->formats();
3969	QtDebugUtils::formatNonNullQFlags(debug&: d, prefix: ", keyboardModifiers=", value: e->modifiers());
3970	d << ", ";
3971	QtDebugUtils::formatQFlags(debug&: d, value: e->buttons());
3972	}
3973
3974	# endif // QT_CONFIG(draganddrop)
3975
3976	# if QT_CONFIG(tabletevent)
3977
3978	static void formatTabletEvent(QDebug d, const QTabletEvent *e)
3979	{
3980	const QEvent::Type type = e->type();
3981
3982	d << eventClassName(t: type) << '(';
3983	QtDebugUtils::formatQEnum(debug&: d, value: type);
3984	d << ' ';
3985	QtDebugUtils::formatQFlags(debug&: d, value: e->buttons());
3986	d << " pos=";
3987	QtDebugUtils::formatQPoint(debug&: d, point: e->position());
3988	d << " z=" << e->z()
3989	<< " xTilt=" << e->xTilt()
3990	<< " yTilt=" << e->yTilt();
3991	if (type == QEvent::TabletPress || type == QEvent::TabletMove)
3992	d << " pressure=" << e->pressure();
3993	if (e->device()->hasCapability(cap: QInputDevice::Capability::Rotation))
3994	d << " rotation=" << e->rotation();
3995	if (e->deviceType() == QInputDevice::DeviceType::Airbrush)
3996	d << " tangentialPressure=" << e->tangentialPressure();
3997	d << " dev=" << e->device() << ')';
3998	}
3999
4000	# endif // QT_CONFIG(tabletevent)
4001
4002	QDebug operator<<(QDebug dbg, const QEventPoint *tp)
4003	{
4004	if (!tp) {
4005	dbg << "QEventPoint(0x0)";
4006	return dbg;
4007	}
4008	return operator<<(dbg, *tp);
4009	}
4010
4011	QDebug operator<<(QDebug dbg, const QEventPoint &tp)
4012	{
4013	QDebugStateSaver saver(dbg);
4014	dbg.nospace();
4015	dbg << "QEventPoint(id=" << tp.id() << " ts=" << tp.timestamp();
4016	dbg << " pos=";
4017	QtDebugUtils::formatQPoint(debug&: dbg, point: tp.position());
4018	dbg << " scn=";
4019	QtDebugUtils::formatQPoint(debug&: dbg, point: tp.scenePosition());
4020	dbg << " gbl=";
4021	QtDebugUtils::formatQPoint(debug&: dbg, point: tp.globalPosition());
4022	dbg << ' ';
4023	QtDebugUtils::formatQEnum(debug&: dbg, value: tp.state());
4024	if (!qFuzzyIsNull(d: tp.pressure()) && !qFuzzyCompare(p1: tp.pressure(), p2: 1))
4025	dbg << " pressure=" << tp.pressure();
4026	if (!tp.ellipseDiameters().isEmpty() || !qFuzzyIsNull(d: tp.rotation())) {
4027	dbg << " ellipse=("
4028	<< tp.ellipseDiameters().width() << "x" << tp.ellipseDiameters().height()
4029	<< " \u2221 " << tp.rotation() << ')';
4030	}
4031	dbg << " vel=";
4032	QtDebugUtils::formatQPoint(debug&: dbg, point: tp.velocity().toPointF());
4033	dbg << " press=";
4034	QtDebugUtils::formatQPoint(debug&: dbg, point: tp.pressPosition());
4035	dbg << " last=";
4036	QtDebugUtils::formatQPoint(debug&: dbg, point: tp.lastPosition());
4037	dbg << " \u0394 ";
4038	QtDebugUtils::formatQPoint(debug&: dbg, point: tp.position() - tp.lastPosition());
4039	dbg << ')';
4040	return dbg;
4041	}
4042
4043	QDebug operator<<(QDebug dbg, const QEvent *e)
4044	{
4045	QDebugStateSaver saver(dbg);
4046	dbg.nospace();
4047	if (!e) {
4048	dbg << "QEvent(this = 0x0)";
4049	return dbg;
4050	}
4051	// More useful event output could be added here
4052	const QEvent::Type type = e->type();
4053	bool isMouse = false;
4054	switch (type) {
4055	case QEvent::Expose:
4056	dbg << "QExposeEvent()";
4057	break;
4058	case QEvent::Paint:
4059	dbg << "QPaintEvent(" << static_cast<const QPaintEvent *>(e)->region() << ')';
4060	break;
4061	case QEvent::MouseButtonPress:
4062	case QEvent::MouseMove:
4063	case QEvent::MouseButtonRelease:
4064	case QEvent::MouseButtonDblClick:
4065	case QEvent::NonClientAreaMouseButtonPress:
4066	case QEvent::NonClientAreaMouseMove:
4067	case QEvent::NonClientAreaMouseButtonRelease:
4068	case QEvent::NonClientAreaMouseButtonDblClick:
4069	isMouse = true;
4070	Q_FALLTHROUGH();
4071	case QEvent::HoverEnter:
4072	case QEvent::HoverMove:
4073	case QEvent::HoverLeave:
4074	{
4075	const QSinglePointEvent *spe = static_cast<const QSinglePointEvent*>(e);
4076	const Qt::MouseButton button = spe->button();
4077	const Qt::MouseButtons buttons = spe->buttons();
4078	dbg << eventClassName(t: type) << '(';
4079	QtDebugUtils::formatQEnum(debug&: dbg, value: type);
4080	dbg << " ts=" << spe->timestamp();
4081	if (isMouse) {
4082	if (type != QEvent::MouseMove && type != QEvent::NonClientAreaMouseMove) {
4083	dbg << ' ';
4084	QtDebugUtils::formatQEnum(debug&: dbg, value: button);
4085	}
4086	if (buttons && button != buttons) {
4087	dbg << " btns=";
4088	QtDebugUtils::formatQFlags(debug&: dbg, value: buttons);
4089	}
4090	}
4091	QtDebugUtils::formatNonNullQFlags(debug&: dbg, prefix: ", ", value: spe->modifiers());
4092	dbg << " pos=";
4093	QtDebugUtils::formatQPoint(debug&: dbg, point: spe->position());
4094	dbg << " scn=";
4095	QtDebugUtils::formatQPoint(debug&: dbg, point: spe->scenePosition());
4096	dbg << " gbl=";
4097	QtDebugUtils::formatQPoint(debug&: dbg, point: spe->globalPosition());
4098	dbg << " dev=" << spe->device() << ')';
4099	if (isMouse) {
4100	auto src = static_cast<const QMouseEvent*>(e)->source();
4101	if (src != Qt::MouseEventNotSynthesized) {
4102	dbg << " source=";
4103	QtDebugUtils::formatQEnum(debug&: dbg, value: src);
4104	}
4105	}
4106	}
4107	break;
4108	# if QT_CONFIG(wheelevent)
4109	case QEvent::Wheel: {
4110	const QWheelEvent *we = static_cast<const QWheelEvent *>(e);
4111	dbg << "QWheelEvent(" << we->phase();
4112	if (!we->pixelDelta().isNull() || !we->angleDelta().isNull())
4113	dbg << ", pixelDelta=" << we->pixelDelta() << ", angleDelta=" << we->angleDelta();
4114	dbg << " dev=" << we->device() << ')';
4115	dbg << ')';
4116	}
4117	break;
4118	# endif // QT_CONFIG(wheelevent)
4119	case QEvent::KeyPress:
4120	case QEvent::KeyRelease:
4121	case QEvent::ShortcutOverride:
4122	{
4123	const QKeyEvent *ke = static_cast<const QKeyEvent *>(e);
4124	dbg << "QKeyEvent(";
4125	QtDebugUtils::formatQEnum(debug&: dbg, value: type);
4126	dbg << ", ";
4127	QtDebugUtils::formatQEnum(debug&: dbg, value: static_cast<Qt::Key>(ke->key()));
4128	QtDebugUtils::formatNonNullQFlags(debug&: dbg, prefix: ", ", value: ke->modifiers());
4129	if (!ke->text().isEmpty())
4130	dbg << ", text=" << ke->text();
4131	if (ke->isAutoRepeat())
4132	dbg << ", autorepeat, count=" << ke->count();
4133	if (dbg.verbosity() > QDebug::DefaultVerbosity) {
4134	dbg << ", nativeScanCode=" << ke->nativeScanCode();
4135	dbg << ", nativeVirtualKey=" << ke->nativeVirtualKey();
4136	}
4137	dbg << ')';
4138	}
4139	break;
4140	#if QT_CONFIG(shortcut)
4141	case QEvent::Shortcut: {
4142	const QShortcutEvent *se = static_cast<const QShortcutEvent *>(e);
4143	dbg << "QShortcutEvent(" << se->key().toString() << ", id=" << se->shortcutId();
4144	if (se->isAmbiguous())
4145	dbg << ", ambiguous";
4146	dbg << ')';
4147	}
4148	break;
4149	#endif
4150	case QEvent::FocusAboutToChange:
4151	case QEvent::FocusIn:
4152	case QEvent::FocusOut:
4153	dbg << "QFocusEvent(";
4154	QtDebugUtils::formatQEnum(debug&: dbg, value: type);
4155	dbg << ", ";
4156	QtDebugUtils::formatQEnum(debug&: dbg, value: static_cast<const QFocusEvent *>(e)->reason());
4157	dbg << ')';
4158	break;
4159	case QEvent::Move: {
4160	const QMoveEvent *me = static_cast<const QMoveEvent *>(e);
4161	dbg << "QMoveEvent(";
4162	QtDebugUtils::formatQPoint(debug&: dbg, point: me->pos());
4163	if (!me->spontaneous())
4164	dbg << ", non-spontaneous";
4165	dbg << ')';
4166	}
4167	break;
4168	case QEvent::Resize: {
4169	const QResizeEvent *re = static_cast<const QResizeEvent *>(e);
4170	dbg << "QResizeEvent(";
4171	QtDebugUtils::formatQSize(debug&: dbg, size: re->size());
4172	if (!re->spontaneous())
4173	dbg << ", non-spontaneous";
4174	dbg << ')';
4175	}
4176	break;
4177	# if QT_CONFIG(draganddrop)
4178	case QEvent::DragEnter:
4179	case QEvent::DragMove:
4180	case QEvent::Drop:
4181	formatDropEvent(d: dbg, e: static_cast<const QDropEvent *>(e));
4182	break;
4183	# endif // QT_CONFIG(draganddrop)
4184	case QEvent::InputMethod:
4185	formatInputMethodEvent(d: dbg, e: static_cast<const QInputMethodEvent *>(e));
4186	break;
4187	case QEvent::InputMethodQuery:
4188	formatInputMethodQueryEvent(d: dbg, e: static_cast<const QInputMethodQueryEvent *>(e));
4189	break;
4190	case QEvent::TouchBegin:
4191	case QEvent::TouchUpdate:
4192	case QEvent::TouchEnd:
4193	formatTouchEvent(d: dbg, t: *static_cast<const QTouchEvent*>(e));
4194	break;
4195	case QEvent::ChildAdded:
4196	case QEvent::ChildPolished:
4197	case QEvent::ChildRemoved:
4198	dbg << "QChildEvent(";
4199	QtDebugUtils::formatQEnum(debug&: dbg, value: type);
4200	dbg << ", " << (static_cast<const QChildEvent*>(e))->child() << ')';
4201	break;
4202	# ifndef QT_NO_GESTURES
4203	case QEvent::NativeGesture: {
4204	const QNativeGestureEvent *ne = static_cast<const QNativeGestureEvent *>(e);
4205	dbg << "QNativeGestureEvent(";
4206	QtDebugUtils::formatQEnum(debug&: dbg, value: ne->gestureType());
4207	dbg << ", fingerCount=" << ne->fingerCount() << ", localPos=";
4208	QtDebugUtils::formatQPoint(debug&: dbg, point: ne->position());
4209	if (!qIsNull(d: ne->value()))
4210	dbg << ", value=" << ne->value();
4211	if (!ne->delta().isNull()) {
4212	dbg << ", delta=";
4213	QtDebugUtils::formatQPoint(debug&: dbg, point: ne->delta());
4214	}
4215	dbg << ')';
4216	}
4217	break;
4218	# endif // !QT_NO_GESTURES
4219	case QEvent::ApplicationStateChange:
4220	dbg << "QApplicationStateChangeEvent(";
4221	QtDebugUtils::formatQEnum(debug&: dbg, value: static_cast<const QApplicationStateChangeEvent *>(e)->applicationState());
4222	dbg << ')';
4223	break;
4224	# ifndef QT_NO_CONTEXTMENU
4225	case QEvent::ContextMenu:
4226	dbg << "QContextMenuEvent(" << static_cast<const QContextMenuEvent *>(e)->pos() << ')';
4227	break;
4228	# endif // !QT_NO_CONTEXTMENU
4229	# if QT_CONFIG(tabletevent)
4230	case QEvent::TabletEnterProximity:
4231	case QEvent::TabletLeaveProximity:
4232	case QEvent::TabletPress:
4233	case QEvent::TabletMove:
4234	case QEvent::TabletRelease:
4235	formatTabletEvent(d: dbg, e: static_cast<const QTabletEvent *>(e));
4236	break;
4237	# endif // QT_CONFIG(tabletevent)
4238	case QEvent::Enter:
4239	dbg << "QEnterEvent(" << static_cast<const QEnterEvent *>(e)->position() << ')';
4240	break;
4241	case QEvent::Timer:
4242	dbg << "QTimerEvent(id=" << static_cast<const QTimerEvent *>(e)->timerId() << ')';
4243	break;
4244	case QEvent::PlatformSurface:
4245	dbg << "QPlatformSurfaceEvent(surfaceEventType=";
4246	switch (static_cast<const QPlatformSurfaceEvent *>(e)->surfaceEventType()) {
4247	case QPlatformSurfaceEvent::SurfaceCreated:
4248	dbg << "SurfaceCreated";
4249	break;
4250	case QPlatformSurfaceEvent::SurfaceAboutToBeDestroyed:
4251	dbg << "SurfaceAboutToBeDestroyed";
4252	break;
4253	}
4254	dbg << ')';
4255	break;
4256	case QEvent::ScrollPrepare: {
4257	const QScrollPrepareEvent *se = static_cast<const QScrollPrepareEvent *>(e);
4258	dbg << "QScrollPrepareEvent(viewportSize=" << se->viewportSize()
4259	<< ", contentPosRange=" << se->contentPosRange()
4260	<< ", contentPos=" << se->contentPos() << ')';
4261	}
4262	break;
4263	case QEvent::Scroll: {
4264	const QScrollEvent *se = static_cast<const QScrollEvent *>(e);
4265	dbg << "QScrollEvent(contentPos=" << se->contentPos()
4266	<< ", overshootDistance=" << se->overshootDistance()
4267	<< ", scrollState=" << se->scrollState() << ')';
4268	}
4269	break;
4270	default:
4271	dbg << eventClassName(t: type) << '(';
4272	QtDebugUtils::formatQEnum(debug&: dbg, value: type);
4273	dbg << ", " << (const void *)e << ')';
4274	break;
4275	}
4276	return dbg;
4277	}
4278	#endif // !QT_NO_DEBUG_STREAM
4279
4280	/*!
4281	\class QShortcutEvent
4282	\brief The QShortcutEvent class provides an event which is generated when
4283	the user presses a key combination.
4284
4285	\ingroup events
4286	\inmodule QtGui
4287
4288	Normally you do not need to use this class directly; QShortcut
4289	provides a higher-level interface to handle shortcut keys.
4290
4291	\sa QShortcut
4292	*/
4293
4294	/*!
4295	\fn const QKeySequence &QShortcutEvent::key() const
4296
4297	Returns the key sequence that triggered the event.
4298	*/
4299
4300	/*!
4301	\fn int QShortcutEvent::shortcutId() const
4302
4303	\deprecated
4304
4305	Returns the ID of the QShortcut object for which this event was
4306	generated.
4307
4308	\sa QShortcut::id()
4309	*/
4310
4311	/*!
4312	\fn bool QShortcutEvent::isAmbiguous() const
4313
4314	Returns \c true if the key sequence that triggered the event is
4315	ambiguous.
4316
4317	\sa QShortcut::activatedAmbiguously()
4318	*/
4319
4320	/*!
4321	\class QWindowStateChangeEvent
4322	\ingroup events
4323	\inmodule QtGui
4324
4325	\brief The QWindowStateChangeEvent class provides the window state before a
4326	window state change.
4327	*/
4328
4329	/*! \fn Qt::WindowStates QWindowStateChangeEvent::oldState() const
4330
4331	Returns the state of the window before the change.
4332	*/
4333
4334	/*! \internal
4335	*/
4336	QWindowStateChangeEvent::QWindowStateChangeEvent(Qt::WindowStates oldState, bool isOverride)
4337	: QEvent(WindowStateChange), m_oldStates(oldState), m_override(isOverride)
4338	{
4339	}
4340
4341	/*! \internal
4342	*/
4343	bool QWindowStateChangeEvent::isOverride() const
4344	{
4345	return m_override;
4346	}
4347
4348	Q_IMPL_EVENT_COMMON(QWindowStateChangeEvent)
4349
4350
4351	/*!
4352	\class QTouchEvent
4353	\brief The QTouchEvent class contains parameters that describe a touch event.
4354	\since 4.6
4355	\ingroup events
4356	\ingroup touch
4357	\inmodule QtGui
4358
4359	\section1 Enabling Touch Events
4360
4361	Touch events occur when pressing, releasing, or moving one or more touch points on a touch
4362	device (such as a touch-screen or track-pad). To receive touch events, widgets have to have the
4363	Qt::WA_AcceptTouchEvents attribute set and graphics items need to have the
4364	\l{QGraphicsItem::setAcceptTouchEvents()}{acceptTouchEvents} attribute set to true.
4365
4366	When using QAbstractScrollArea based widgets, you should enable the Qt::WA_AcceptTouchEvents
4367	attribute on the scroll area's \l{QAbstractScrollArea::viewport()}{viewport}.
4368
4369	Similarly to QMouseEvent, Qt automatically grabs each touch point on the first press inside a
4370	widget, and the widget will receive all updates for the touch point until it is released.
4371	Note that it is possible for a widget to receive events for numerous touch points, and that
4372	multiple widgets may be receiving touch events at the same time.
4373
4374	\section1 Event Handling
4375
4376	All touch events are of type QEvent::TouchBegin, QEvent::TouchUpdate, QEvent::TouchEnd or
4377	QEvent::TouchCancel. Reimplement QWidget::event() or QAbstractScrollArea::viewportEvent() for
4378	widgets and QGraphicsItem::sceneEvent() for items in a graphics view to receive touch events.
4379
4380	Unlike widgets, QWindows receive touch events always, there is no need to opt in. When working
4381	directly with a QWindow, it is enough to reimplement QWindow::touchEvent().
4382
4383	The QEvent::TouchUpdate and QEvent::TouchEnd events are sent to the widget or item that
4384	accepted the QEvent::TouchBegin event. If the QEvent::TouchBegin event is not accepted and not
4385	filtered by an event filter, then no further touch events are sent until the next
4386	QEvent::TouchBegin.
4387
4388	Some systems may send an event of type QEvent::TouchCancel. Upon receiving this event
4389	applications are requested to ignore the entire active touch sequence. For example in a
4390	composited system the compositor may decide to treat certain gestures as system-wide
4391	gestures. Whenever such a decision is made (the gesture is recognized), the clients will be
4392	notified with a QEvent::TouchCancel event so they can update their state accordingly.
4393
4394	The pointCount() and point() functions can be used to access and iterate individual
4395	touch points.
4396
4397	The points() function returns a list of all touch points contained in the event.
4398	Note that this list may be empty, for example in case of a QEvent::TouchCancel event.
4399	Each point is an instance of the QEventPoint class. The QEventPoint::State enum
4400	describes the different states that a touch point may have.
4401
4402	\note The list of points() will never be partial: A touch event will always contain a touch
4403	point for each existing physical touch contacts targeting the window or widget to which the
4404	event is sent. For instance, assuming that all touches target the same window or widget, an
4405	event with a condition of points().count()==2 is guaranteed to imply that the number of
4406	fingers touching the touchscreen or touchpad is exactly two.
4407
4408	\section1 Event Delivery and Propagation
4409
4410	By default, QGuiApplication translates the first touch point in a QTouchEvent into
4411	a QMouseEvent. This makes it possible to enable touch events on existing widgets that do not
4412	normally handle QTouchEvent. See below for information on some special considerations needed
4413	when doing this.
4414
4415	QEvent::TouchBegin is the first touch event sent to a widget. The QEvent::TouchBegin event
4416	contains a special accept flag that indicates whether the receiver wants the event. By default,
4417	the event is accepted. You should call ignore() if the touch event is not handled by your
4418	widget. The QEvent::TouchBegin event is propagated up the parent widget chain until a widget
4419	accepts it with accept(), or an event filter consumes it. For QGraphicsItems, the
4420	QEvent::TouchBegin event is propagated to items under the mouse (similar to mouse event
4421	propagation for QGraphicsItems).
4422
4423	\section1 Touch Point Grouping
4424
4425	As mentioned above, it is possible that several widgets can be receiving QTouchEvents at the
4426	same time. However, Qt makes sure to never send duplicate QEvent::TouchBegin events to the same
4427	widget, which could theoretically happen during propagation if, for example, the user touched 2
4428	separate widgets in a QGroupBox and both widgets ignored the QEvent::TouchBegin event.
4429
4430	To avoid this, Qt will group new touch points together using the following rules:
4431
4432	\list
4433
4434	\li When the first touch point is detected, the destination widget is determined firstly by the
4435	location on screen and secondly by the propagation rules.
4436
4437	\li When additional touch points are detected, Qt first looks to see if there are any active
4438	touch points on any ancestor or descendent of the widget under the new touch point. If there
4439	are, the new touch point is grouped with the first, and the new touch point will be sent in a
4440	single QTouchEvent to the widget that handled the first touch point. (The widget under the new
4441	touch point will not receive an event).
4442
4443	\endlist
4444
4445	This makes it possible for sibling widgets to handle touch events independently while making
4446	sure that the sequence of QTouchEvents is always correct.
4447
4448	\section1 Mouse Events and Touch Event Synthesizing
4449
4450	QTouchEvent delivery is independent from that of QMouseEvent. The application flags
4451	Qt::AA_SynthesizeTouchForUnhandledMouseEvents and Qt::AA_SynthesizeMouseForUnhandledTouchEvents
4452	can be used to enable or disable automatic synthesizing of touch events to mouse events and
4453	mouse events to touch events.
4454
4455	\section1 Caveats
4456
4457	\list
4458
4459	\li As mentioned above, enabling touch events means multiple widgets can be receiving touch
4460	events simultaneously. Combined with the default QWidget::event() handling for QTouchEvents,
4461	this gives you great flexibility in designing touch user interfaces. Be aware of the
4462	implications. For example, it is possible that the user is moving a QSlider with one finger and
4463	pressing a QPushButton with another. The signals emitted by these widgets will be
4464	interleaved.
4465
4466	\li Recursion into the event loop using one of the exec() methods (e.g., QDialog::exec() or
4467	QMenu::exec()) in a QTouchEvent event handler is not supported. Since there are multiple event
4468	recipients, recursion may cause problems, including but not limited to lost events
4469	and unexpected infinite recursion.
4470
4471	\li QTouchEvents are not affected by a \l{QWidget::grabMouse()}{mouse grab} or an
4472	\l{QApplication::activePopupWidget()}{active pop-up widget}. The behavior of QTouchEvents is
4473	undefined when opening a pop-up or grabbing the mouse while there are more than one active touch
4474	points.
4475
4476	\endlist
4477
4478	\sa QEventPoint, QEventPoint::State, Qt::WA_AcceptTouchEvents,
4479	QGraphicsItem::acceptTouchEvents()
4480	*/
4481
4482	/*!
4483	Constructs a QTouchEvent with the given \a eventType, \a device,
4484	\a touchPoints, and current keyboard \a modifiers at the time of the event.
4485	*/
4486
4487	QTouchEvent::QTouchEvent(QEvent::Type eventType,
4488	const QPointingDevice *device,
4489	Qt::KeyboardModifiers modifiers,
4490	const QList<QEventPoint> &touchPoints)
4491	: QPointerEvent(eventType, device, modifiers, touchPoints),
4492	m_target(nullptr)
4493	{
4494	for (QEventPoint &point : m_points) {
4495	m_touchPointStates |= point.state();
4496	QMutableEventPoint::setDevice(p&: point, arg: device);
4497	}
4498	}
4499
4500	#if QT_DEPRECATED_SINCE(6, 0)
4501	/*!
4502	\deprecated [6.0] Use another constructor.
4503
4504	Constructs a QTouchEvent with the given \a eventType, \a device, and
4505	\a touchPoints. The \a touchPointStates and \a modifiers are the current
4506	touch point states and keyboard modifiers at the time of the event.
4507	*/
4508	QTouchEvent::QTouchEvent(QEvent::Type eventType,
4509	const QPointingDevice *device,
4510	Qt::KeyboardModifiers modifiers,
4511	QEventPoint::States touchPointStates,
4512	const QList<QEventPoint> &touchPoints)
4513	: QPointerEvent(eventType, device, modifiers, touchPoints),
4514	m_target(nullptr),
4515	m_touchPointStates(touchPointStates)
4516	{
4517	for (QEventPoint &point : m_points)
4518	QMutableEventPoint::setDevice(p&: point, arg: device);
4519	}
4520	#endif // QT_DEPRECATED_SINCE(6, 0)
4521
4522	Q_IMPL_POINTER_EVENT(QTouchEvent)
4523
4524	/*!
4525	Returns true if this event includes at least one newly-pressed touchpoint.
4526	*/
4527	bool QTouchEvent::isBeginEvent() const
4528	{
4529	return m_touchPointStates.testFlag(flag: QEventPoint::State::Pressed);
4530	}
4531
4532	/*!
4533	Returns true if this event does not include newly-pressed or newly-released
4534	touchpoints.
4535	*/
4536	bool QTouchEvent::isUpdateEvent() const
4537	{
4538	return !m_touchPointStates.testFlag(flag: QEventPoint::State::Pressed) &&
4539	!m_touchPointStates.testFlag(flag: QEventPoint::State::Released);
4540	}
4541
4542	/*!
4543	Returns true if this event includes at least one newly-released touchpoint.
4544	*/
4545	bool QTouchEvent::isEndEvent() const
4546	{
4547	return m_touchPointStates.testFlag(flag: QEventPoint::State::Released);
4548	}
4549
4550	/*! \fn QObject *QTouchEvent::target() const
4551
4552	Returns the target object within the window on which the event occurred.
4553	This is typically a QWidget or a QQuickItem. May be 0 when no specific target is available.
4554	*/
4555
4556	/*! \fn QEventPoint::States QTouchEvent::touchPointStates() const
4557
4558	Returns a bitwise OR of all the touch point states for this event.
4559	*/
4560
4561	/*! \fn const QList<QEventPoint> &QTouchEvent::touchPoints() const
4562	\deprecated [6.0] Use points() instead.
4563
4564	Returns a reference to the list of touch points contained in the touch event.
4565
4566	\sa QPointerEvent::point(), QPointerEvent::pointCount()
4567	*/
4568
4569	/*!
4570	\class QScrollPrepareEvent
4571	\since 4.8
4572	\ingroup events
4573	\inmodule QtGui
4574
4575	\brief The QScrollPrepareEvent class is sent in preparation of scrolling.
4576
4577	The scroll prepare event is sent before scrolling (usually by QScroller) is started.
4578	The object receiving this event should set viewportSize, maxContentPos and contentPos.
4579	It also should accept this event to indicate that scrolling should be started.
4580
4581	It is not guaranteed that a QScrollEvent will be sent after an accepted
4582	QScrollPrepareEvent, e.g. in a case where the maximum content position is (0, 0).
4583
4584	\sa QScrollEvent, QScroller
4585	*/
4586
4587	/*!
4588	Creates new QScrollPrepareEvent
4589	The \a startPos is the position of a touch or mouse event that started the scrolling.
4590	*/
4591	QScrollPrepareEvent::QScrollPrepareEvent(const QPointF &startPos)
4592	: QEvent(QEvent::ScrollPrepare), m_startPos(startPos)
4593	{
4594	}
4595
4596	Q_IMPL_EVENT_COMMON(QScrollPrepareEvent)
4597
4598	/*!
4599	\fn QPointF QScrollPrepareEvent::startPos() const
4600
4601	Returns the position of the touch or mouse event that started the scrolling.
4602	*/
4603
4604	/*!
4605	\fn QSizeF QScrollPrepareEvent::viewportSize() const
4606	Returns size of the area that is to be scrolled as set by setViewportSize
4607
4608	\sa setViewportSize()
4609	*/
4610
4611	/*!
4612	\fn QRectF QScrollPrepareEvent::contentPosRange() const
4613	Returns the range of coordinates for the content as set by setContentPosRange().
4614	*/
4615
4616	/*!
4617	\fn QPointF QScrollPrepareEvent::contentPos() const
4618	Returns the current position of the content as set by setContentPos.
4619	*/
4620
4621	/*!
4622	Sets the size of the area that is to be scrolled to \a size.
4623
4624	\sa viewportSize()
4625	*/
4626	void QScrollPrepareEvent::setViewportSize(const QSizeF &size)
4627	{
4628	m_viewportSize = size;
4629	}
4630
4631	/*!
4632	Sets the range of content coordinates to \a rect.
4633
4634	\sa contentPosRange()
4635	*/
4636	void QScrollPrepareEvent::setContentPosRange(const QRectF &rect)
4637	{
4638	m_contentPosRange = rect;
4639	}
4640
4641	/*!
4642	Sets the current content position to \a pos.
4643
4644	\sa contentPos()
4645	*/
4646	void QScrollPrepareEvent::setContentPos(const QPointF &pos)
4647	{
4648	m_contentPos = pos;
4649	}
4650
4651
4652	/*!
4653	\class QScrollEvent
4654	\since 4.8
4655	\ingroup events
4656	\inmodule QtGui
4657
4658	\brief The QScrollEvent class is sent when scrolling.
4659
4660	The scroll event is sent to indicate that the receiver should be scrolled.
4661	Usually the receiver should be something visual like QWidget or QGraphicsObject.
4662
4663	Some care should be taken that no conflicting QScrollEvents are sent from two
4664	sources. Using QScroller::scrollTo is save however.
4665
4666	\sa QScrollPrepareEvent, QScroller
4667	*/
4668
4669	/*!
4670	\enum QScrollEvent::ScrollState
4671
4672	This enum describes the states a scroll event can have.
4673
4674	\value ScrollStarted Set for the first scroll event of a scroll activity.
4675
4676	\value ScrollUpdated Set for all but the first and the last scroll event of a scroll activity.
4677
4678	\value ScrollFinished Set for the last scroll event of a scroll activity.
4679
4680	\sa QScrollEvent::scrollState()
4681	*/
4682
4683	/*!
4684	Creates a new QScrollEvent
4685	\a contentPos is the new content position, \a overshootDistance is the
4686	new overshoot distance while \a scrollState indicates if this scroll
4687	event is the first one, the last one or some event in between.
4688	*/
4689	QScrollEvent::QScrollEvent(const QPointF &contentPos, const QPointF &overshootDistance, ScrollState scrollState)
4690	: QEvent(QEvent::Scroll), m_contentPos(contentPos), m_overshoot(overshootDistance), m_state(scrollState)
4691	{
4692	}
4693
4694	Q_IMPL_EVENT_COMMON(QScrollEvent)
4695
4696	/*!
4697	\fn QPointF QScrollEvent::contentPos() const
4698
4699	Returns the new scroll position.
4700	*/
4701
4702	/*!
4703	\fn QPointF QScrollEvent::overshootDistance() const
4704
4705	Returns the new overshoot distance.
4706	See QScroller for an explanation of the term overshoot.
4707
4708	\sa QScroller
4709	*/
4710
4711	/*!
4712	\fn QScrollEvent::ScrollState QScrollEvent::scrollState() const
4713
4714	Returns the current scroll state as a combination of ScrollStateFlag values.
4715	ScrollStarted (or ScrollFinished) will be set, if this scroll event is the first (or last) event in a scrolling activity.
4716	Please note that both values can be set at the same time, if the activity consists of a single QScrollEvent.
4717	All other scroll events in between will have their state set to ScrollUpdated.
4718
4719	A widget could for example revert selections when scrolling is started and stopped.
4720	*/
4721
4722	/*!
4723	Creates a new QScreenOrientationChangeEvent
4724	\a screenOrientation is the new orientation of the \a screen.
4725	*/
4726	QScreenOrientationChangeEvent::QScreenOrientationChangeEvent(QScreen *screen, Qt::ScreenOrientation screenOrientation)
4727	: QEvent(QEvent::OrientationChange), m_screen(screen), m_orientation(screenOrientation)
4728	{
4729	}
4730
4731	Q_IMPL_EVENT_COMMON(QScreenOrientationChangeEvent)
4732
4733	/*!
4734	\fn QScreen *QScreenOrientationChangeEvent::screen() const
4735
4736	Returns the screen whose orientation changed.
4737	*/
4738
4739	/*!
4740	\fn Qt::ScreenOrientation QScreenOrientationChangeEvent::orientation() const
4741
4742	Returns the orientation of the screen.
4743	*/
4744
4745	/*!
4746	Creates a new QApplicationStateChangeEvent.
4747	\a applicationState is the new state.
4748	*/
4749	QApplicationStateChangeEvent::QApplicationStateChangeEvent(Qt::ApplicationState applicationState)
4750	: QEvent(QEvent::ApplicationStateChange), m_applicationState(applicationState)
4751	{
4752	}
4753
4754	Q_IMPL_EVENT_COMMON(QApplicationStateChangeEvent)
4755
4756	/*!
4757	\fn Qt::ApplicationState QApplicationStateChangeEvent::applicationState() const
4758
4759	Returns the state of the application.
4760	*/
4761
4762	/*!
4763	\class QChildWindowEvent
4764	\inmodule QtGui
4765	\since 6.7
4766	\brief The QChildWindowEvent class contains event parameters for
4767	child window changes.
4768
4769	\ingroup events
4770
4771	Child window events are sent to windows when children are
4772	added or removed.
4773
4774	In both cases you can only rely on the child being a QWindow
4775	— not any subclass thereof. This is because in the
4776	QEvent::ChildWindowAdded case the subclass is not yet fully
4777	constructed, and in the QEvent::ChildWindowRemoved case it
4778	might have already been destructed.
4779	*/
4780
4781	/*!
4782	Constructs a child window event object of a particular \a type
4783	for the \a childWindow.
4784
4785	\a type can be QEvent::ChildWindowAdded or QEvent::ChildWindowRemoved.
4786
4787	\sa child()
4788	*/
4789	QChildWindowEvent::QChildWindowEvent(Type type, QWindow *childWindow)
4790	: QEvent(type), c(childWindow)
4791	{
4792	}
4793
4794	Q_IMPL_EVENT_COMMON(QChildWindowEvent)
4795
4796	/*!
4797	\fn QWindow *QChildWindowEvent::child() const
4798
4799	Returns the child window that was added or removed.
4800	*/
4801
4802	QMutableTouchEvent::~QMutableTouchEvent()
4803	= default;
4804
4805	/*! \internal
4806	Add the given \a point.
4807	*/
4808	void QMutableTouchEvent::addPoint(QTouchEvent *e, const QEventPoint &point)
4809	{
4810	e->m_points.append(t: point);
4811	auto &added = e->m_points.last();
4812	if (!added.device())
4813	QMutableEventPoint::setDevice(p&: added, arg: e->pointingDevice());
4814	e->m_touchPointStates |= point.state();
4815	}
4816
4817
4818	QMutableSinglePointEvent::~QMutableSinglePointEvent()
4819	= default;
4820
4821	/*! \internal
4822	Add the given \a point.
4823	*/
4824	void QMutableTouchEvent::addPoint(const QEventPoint &point)
4825	{
4826	addPoint(e: this, point);
4827	}
4828
4829	QT_END_NAMESPACE
4830
4831	#include "moc_qevent.cpp"
4832