#include <qwindowsysteminterface_p.h>

Collaboration diagram for QWindowSystemInterfacePrivate:

Classes
class	ApplicationStateChangedEvent

class	CloseEvent

class	ContextMenuEvent

class	EnterEvent

class	ExposeEvent

class	FileOpenEvent

class	FlushEventsEvent

class	FocusWindowEvent

class	GeometryChangeEvent

class	GestureEvent

class	InputEvent

class	KeyEvent

class	LeaveEvent

class	MouseEvent

class	PaintEvent

class	PlatformPanelEvent

class	PointerEvent

class	SafeAreaMarginsChangedEvent

class	ScreenGeometryEvent

class	ScreenLogicalDotsPerInchEvent

class	ScreenOrientationEvent

class	ScreenRefreshRateEvent

class	TabletEnterProximityEvent

class	TabletEvent

class	TabletLeaveProximityEvent

class	ThemeChangeEvent

class	TouchEvent

class	UserEvent

class	WheelEvent

class	WindowDevicePixelRatioChangedEvent

class	WindowScreenChangedEvent

class	WindowStateChangedEvent

class	WindowSystemEvent

class	WindowSystemEventList

Public Types
enum	EventType { UserInputEvent = 0x100 , Close = UserInputEvent \| 0x01 , GeometryChange = 0x02 , Enter = UserInputEvent \| 0x03 , Leave = UserInputEvent \| 0x04 , FocusWindow = 0x05 , WindowStateChanged = 0x06 , Mouse = UserInputEvent \| 0x07 , Wheel = UserInputEvent \| 0x09 , Key = UserInputEvent \| 0x0a , Touch = UserInputEvent \| 0x0b , ScreenOrientation = 0x0c , ScreenGeometry = 0x0d , ScreenAvailableGeometry = 0x0e , ScreenLogicalDotsPerInch = 0x0f , ScreenRefreshRate = 0x10 , ThemeChange = 0x11 , Expose = 0x12 , FileOpen = UserInputEvent \| 0x13 , Tablet = UserInputEvent \| 0x14 , TabletEnterProximity = UserInputEvent \| 0x15 , TabletLeaveProximity = UserInputEvent \| 0x16 , PlatformPanel = UserInputEvent \| 0x17 , ContextMenu = UserInputEvent \| 0x18 , EnterWhatsThisMode = UserInputEvent \| 0x19 , Gesture = UserInputEvent \| 0x1a , ApplicationStateChanged = 0x19 , FlushEvents = 0x20 , WindowScreenChanged = 0x21 , SafeAreaMarginsChanged = 0x22 , ApplicationTermination = 0x23 , Paint = 0x24 , WindowDevicePixelRatioChanged = 0x25 }

Static Public Member Functions
static qsizetype	windowSystemEventsQueued ()

static bool	nonUserInputEventsQueued ()

static WindowSystemEvent *	getWindowSystemEvent ()

static WindowSystemEvent *	getNonUserInputWindowSystemEvent ()

static WindowSystemEvent *	peekWindowSystemEvent (EventType t)

static void	removeWindowSystemEvent (WindowSystemEvent *event)

static QList< QEventPoint >	fromNativeTouchPoints (const QList< QWindowSystemInterface::TouchPoint > &points, const QWindow window, QEvent::Type type=nullptr)

template<class EventPointList >
static QList< QWindowSystemInterface::TouchPoint >	toNativeTouchPoints (const EventPointList &pointList, const QWindow *window)

static QWindowSystemInterface::TouchPoint	toNativeTouchPoint (const QEventPoint &point, const QWindow *window)

static void	installWindowSystemEventHandler (QWindowSystemEventHandler *handler)

static void	removeWindowSystemEventhandler (QWindowSystemEventHandler *handler)

Static Public Attributes
static WindowSystemEventList	windowSystemEventQueue

static QElapsedTimer	eventTime

static bool	synchronousWindowSystemEvents = false

static bool	platformFiltersEvents

static QWaitCondition	eventsFlushed

static QMutex	flushEventMutex

static QAtomicInt	eventAccepted

static QWindowSystemEventHandler *	eventHandler

Detailed Description

Definition at line 35 of file qwindowsysteminterface_p.h.

Member Enumeration Documentation

◆ EventType

enum QWindowSystemInterfacePrivate::EventType

Enumerator
UserInputEvent
Close
GeometryChange
Enter
Leave
FocusWindow
WindowStateChanged
Mouse
Wheel
Key
Touch
ScreenOrientation
ScreenGeometry
ScreenAvailableGeometry
ScreenLogicalDotsPerInch
ScreenRefreshRate
ThemeChange
Expose
FileOpen
Tablet
TabletEnterProximity
TabletLeaveProximity
PlatformPanel
ContextMenu
EnterWhatsThisMode
Gesture
ApplicationStateChanged
FlushEvents
WindowScreenChanged
SafeAreaMarginsChanged
ApplicationTermination
Paint
WindowDevicePixelRatioChanged

Definition at line 37 of file qwindowsysteminterface_p.h.

Member Function Documentation

◆ fromNativeTouchPoints()

QList< QEventPoint > QWindowSystemInterfacePrivate::fromNativeTouchPoints	(	const QList< QWindowSystemInterface::TouchPoint > &	points,
		const QWindow *	window,
		QEvent::Type *	type = nullptr )

static

Convert a list of \l QWindowSystemInterface::TouchPoint points to a list of temporary QEventPoint instances, scaled (but not localized) for delivery to the given window.

This is called from QWindowSystemInterface::handleTouchEvent(): that is too early to update the QEventPoint instances in QPointingDevice, because we want those to hold "current" state from the applcation's point of view. The QWindowSystemInterfacePrivate::TouchEvent, to which the returned touchpoints will "belong", might go through the queue before being processed; the application doesn't see the equivalent QTouchEvent until later on. Therefore the responsibility to update the QEventPoint instances in QPointingDevice is in QGuiApplication, not here.

QGuiApplicationPrivate::processMouseEvent() also calls this function when it synthesizes a touch event from a mouse event. But that's outside the normal use case.

It might be better if we change all the platform plugins to create temporary instances of QEventPoint directly, and remove QWindowSystemInterface::TouchPoint completely. Then we will no longer need this function either. But that's only possible as long as QEventPoint remains a Q_GADGET, not a QObject, so that it continues to be small and suitable for temporary stack allocation. QEventPoint is a little bigger than QWindowSystemInterface::TouchPoint, though.

Definition at line 611 of file qwindowsysteminterface.cpp.

References QHighDpi::fromNativePixels(), QPointingDeviceUniqueId::fromNumericId(), QEventPoint::Pressed, QEventPoint::Released, QEvent::TouchBegin, QEvent::TouchEnd, QEvent::TouchUpdate, and window().

Referenced by QGuiApplicationPrivate::processMouseEvent(), and QT_DEFINE_QPA_EVENT_HANDLER().

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