The QGraphicsSceneWheelEvent class provides wheel events in the graphics view framework. More...

#include <qgraphicssceneevent.h>

Inheritance diagram for QGraphicsSceneWheelEvent:

Collaboration diagram for QGraphicsSceneWheelEvent:

Public Member Functions
	QGraphicsSceneWheelEvent (Type type=None)

	~QGraphicsSceneWheelEvent ()
	Destroys the QGraphicsSceneWheelEvent.

QPointF	pos () const
	Returns the position of the cursor in item coordinates when the wheel event occurred.

void	setPos (const QPointF &pos)

QPointF	scenePos () const
	Returns the position of the cursor in scene coordinates when the wheel event occurred.

void	setScenePos (const QPointF &pos)

QPoint	screenPos () const
	Returns the position of the cursor in screen coordinates when the wheel event occurred.

void	setScreenPos (const QPoint &pos)

Qt::MouseButtons	buttons () const
	Returns the mouse buttons that were pressed when the wheel event occurred.

void	setButtons (Qt::MouseButtons buttons)

Qt::KeyboardModifiers	modifiers () const
	Returns the keyboard modifiers that were active when the wheel event occurred.

void	setModifiers (Qt::KeyboardModifiers modifiers)

int	delta () const
	Returns the distance that the wheel is rotated, in eighths (1/8s) of a degree.

void	setDelta (int delta)

Qt::Orientation	orientation () const
	Returns the wheel orientation.

void	setOrientation (Qt::Orientation orientation)

Qt::ScrollPhase	phase () const

void	setPhase (Qt::ScrollPhase scrollPhase)

QPoint	pixelDelta () const

void	setPixelDelta (QPoint delta)

bool	isInverted () const
	Returns whether the delta values delivered with the event are inverted.

void	setInverted (bool inverted)

Public Member Functions inherited from QGraphicsSceneEvent
	QGraphicsSceneEvent (Type type)

	~QGraphicsSceneEvent ()
	Destroys the event.

QWidget *	widget () const
	Returns the widget where the event originated, or \nullptr if the event originates from another application.

void	setWidget (QWidget *widget)

quint64	timestamp () const

void	setTimestamp (quint64 ts)

Public Member Functions inherited from QEvent
	QEvent (Type type)
	Constructs an event object of type type.

virtual	~QEvent ()
	Destroys the event.

Type	type () const
	Returns the event type.

bool	spontaneous () const
	Returns `true` if the event originated outside the application (a system event); otherwise returns `false`.

virtual void	setAccepted (bool accepted)

bool	isAccepted () const

void	accept ()
	Sets the accept flag of the event object, the equivalent of calling setAccepted(true).

void	ignore ()
	Clears the accept flag parameter of the event object, the equivalent of calling setAccepted(false).

bool	isInputEvent () const noexcept

bool	isPointerEvent () const noexcept

bool	isSinglePointEvent () const noexcept

virtual QEvent *	clone () const
	Creates and returns an identical copy of this event.

Additional Inherited Members
Public Types inherited from QEvent
enum	Type { None = 0 , Timer = 1 , MouseButtonPress = 2 , MouseButtonRelease = 3 , MouseButtonDblClick = 4 , MouseMove = 5 , KeyPress = 6 , KeyRelease = 7 , FocusIn = 8 , FocusOut = 9 , FocusAboutToChange = 23 , Enter = 10 , Leave = 11 , Paint = 12 , Move = 13 , Resize = 14 , Create = 15 , Destroy = 16 , Show = 17 , Hide = 18 , Close = 19 , Quit = 20 , ParentChange = 21 , ParentAboutToChange = 131 , ThreadChange = 22 , WindowActivate = 24 , WindowDeactivate = 25 , ShowToParent = 26 , HideToParent = 27 , Wheel = 31 , WindowTitleChange = 33 , WindowIconChange = 34 , ApplicationWindowIconChange = 35 , ApplicationFontChange = 36 , ApplicationLayoutDirectionChange = 37 , ApplicationPaletteChange = 38 , PaletteChange = 39 , Clipboard = 40 , Speech = 42 , MetaCall = 43 , SockAct = 50 , WinEventAct = 132 , DeferredDelete = 52 , DragEnter = 60 , DragMove = 61 , DragLeave = 62 , Drop = 63 , DragResponse = 64 , ChildAdded = 68 , ChildPolished = 69 , ChildRemoved = 71 , ShowWindowRequest = 73 , PolishRequest = 74 , Polish = 75 , LayoutRequest = 76 , UpdateRequest = 77 , UpdateLater = 78 , EmbeddingControl = 79 , ActivateControl = 80 , DeactivateControl = 81 , ContextMenu = 82 , InputMethod = 83 , TabletMove = 87 , LocaleChange = 88 , LanguageChange = 89 , LayoutDirectionChange = 90 , Style = 91 , TabletPress = 92 , TabletRelease = 93 , OkRequest = 94 , HelpRequest = 95 , IconDrag = 96 , FontChange = 97 , EnabledChange = 98 , ActivationChange = 99 , StyleChange = 100 , IconTextChange = 101 , ModifiedChange = 102 , MouseTrackingChange = 109 , WindowBlocked = 103 , WindowUnblocked = 104 , WindowStateChange = 105 , ReadOnlyChange = 106 , ToolTip = 110 , WhatsThis = 111 , StatusTip = 112 , ActionChanged = 113 , ActionAdded = 114 , ActionRemoved = 115 , FileOpen = 116 , Shortcut = 117 , ShortcutOverride = 51 , WhatsThisClicked = 118 , ToolBarChange = 120 , ApplicationActivate = 121 , ApplicationActivated = ApplicationActivate , ApplicationDeactivate = 122 , ApplicationDeactivated = ApplicationDeactivate , QueryWhatsThis = 123 , EnterWhatsThisMode = 124 , LeaveWhatsThisMode = 125 , ZOrderChange = 126 , HoverEnter = 127 , HoverLeave = 128 , HoverMove = 129 , AcceptDropsChange = 152 , ZeroTimerEvent = 154 , GraphicsSceneMouseMove = 155 , GraphicsSceneMousePress = 156 , GraphicsSceneMouseRelease = 157 , GraphicsSceneMouseDoubleClick = 158 , GraphicsSceneContextMenu = 159 , GraphicsSceneHoverEnter = 160 , GraphicsSceneHoverMove = 161 , GraphicsSceneHoverLeave = 162 , GraphicsSceneHelp = 163 , GraphicsSceneDragEnter = 164 , GraphicsSceneDragMove = 165 , GraphicsSceneDragLeave = 166 , GraphicsSceneDrop = 167 , GraphicsSceneWheel = 168 , GraphicsSceneLeave = 220 , KeyboardLayoutChange = 169 , DynamicPropertyChange = 170 , TabletEnterProximity = 171 , TabletLeaveProximity = 172 , NonClientAreaMouseMove = 173 , NonClientAreaMouseButtonPress = 174 , NonClientAreaMouseButtonRelease = 175 , NonClientAreaMouseButtonDblClick = 176 , MacSizeChange = 177 , ContentsRectChange = 178 , MacGLWindowChange = 179 , FutureCallOut = 180 , GraphicsSceneResize = 181 , GraphicsSceneMove = 182 , CursorChange = 183 , ToolTipChange = 184 , NetworkReplyUpdated = 185 , GrabMouse = 186 , UngrabMouse = 187 , GrabKeyboard = 188 , UngrabKeyboard = 189 , StateMachineSignal = 192 , StateMachineWrapped = 193 , TouchBegin = 194 , TouchUpdate = 195 , TouchEnd = 196 , NativeGesture = 197 , RequestSoftwareInputPanel = 199 , CloseSoftwareInputPanel = 200 , WinIdChange = 203 , Gesture = 198 , GestureOverride = 202 , ScrollPrepare = 204 , Scroll = 205 , Expose = 206 , InputMethodQuery = 207 , OrientationChange = 208 , TouchCancel = 209 , ThemeChange = 210 , SockClose = 211 , PlatformPanel = 212 , StyleAnimationUpdate = 213 , ApplicationStateChange = 214 , WindowChangeInternal = 215 , ScreenChangeInternal = 216 , PlatformSurface = 217 , Pointer = 218 , TabletTrackingChange = 219 , WindowAboutToChangeInternal = 221 , DevicePixelRatioChange = 222 , ChildWindowAdded = 223 , ChildWindowRemoved = 224 , ParentWindowAboutToChange = 225 , ParentWindowChange = 226 , User = 1000 , MaxUser = 65535 }
	This enum type defines the valid event types in Qt. More...

Static Public Member Functions inherited from QEvent
static int	registerEventType (int hint=-1) noexcept

Protected Member Functions inherited from QGraphicsSceneEvent
	QGraphicsSceneEvent (QGraphicsSceneEventPrivate &dd, Type type=None)

Protected Member Functions inherited from QEvent
	QEvent (Type type, InputEventTag)

	QEvent (Type type, PointerEventTag)

	QEvent (Type type, SinglePointEventTag)

Protected Attributes inherited from QGraphicsSceneEvent
QScopedPointer< QGraphicsSceneEventPrivate >	d_ptr

Protected Attributes inherited from QEvent
quint16	t

Detailed Description

The QGraphicsSceneWheelEvent class provides wheel events in the graphics view framework.

Since: 4.2

\inmodule QtWidgets

\l{QWheelEvent}{QWheelEvent}s received by a QGraphicsView are translated into QGraphicsSceneWheelEvents; it translates the QWheelEvent::globalPos() into item, scene, and screen coordinates (pos(), scenePos(), and screenPos()).

See also: QGraphicsSceneMouseEvent, QGraphicsSceneContextMenuEvent, QGraphicsSceneHoverEvent, QWheelEvent

Definition at line 100 of file qgraphicssceneevent.h.

Constructor & Destructor Documentation

◆ QGraphicsSceneWheelEvent()

QGraphicsSceneWheelEvent::QGraphicsSceneWheelEvent ( Type type = None )

explicit

Constructs a QGraphicsSceneWheelEvent of type type, which is always QEvent::GraphicsSceneWheel.

Definition at line 698 of file qgraphicssceneevent.cpp.

◆ ~QGraphicsSceneWheelEvent()

QGraphicsSceneWheelEvent::~QGraphicsSceneWheelEvent ( )

Destroys the QGraphicsSceneWheelEvent.

Definition at line 706 of file qgraphicssceneevent.cpp.

Member Function Documentation

◆ buttons()

Qt::MouseButtons QGraphicsSceneWheelEvent::buttons ( ) const

Returns the mouse buttons that were pressed when the wheel event occurred.

See also: modifiers()

Definition at line 778 of file qgraphicssceneevent.cpp.

References d.

Referenced by setButtons().

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◆ delta()

int QGraphicsSceneWheelEvent::delta ( ) const

Returns the distance that the wheel is rotated, in eighths (1/8s) of a degree.

A positive value indicates that the wheel was rotated forwards away from the user; a negative value indicates that the wheel was rotated backwards toward the user.

Most mouse types work in steps of 15 degrees, in which case the delta value is a multiple of 120 (== 15 * 8).

Definition at line 823 of file qgraphicssceneevent.cpp.

References d.

Referenced by setDelta().

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◆ isInverted()

bool QGraphicsSceneWheelEvent::isInverted ( ) const

Returns whether the delta values delivered with the event are inverted.

Since: 6.2

Definition at line 908 of file qgraphicssceneevent.cpp.

References d.

◆ modifiers()

Qt::KeyboardModifiers QGraphicsSceneWheelEvent::modifiers ( ) const

Returns the keyboard modifiers that were active when the wheel event occurred.

See also: buttons()

Definition at line 799 of file qgraphicssceneevent.cpp.

References d.

Referenced by setModifiers().

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◆ orientation()

Qt::Orientation QGraphicsSceneWheelEvent::orientation ( ) const

Returns the wheel orientation.

Definition at line 841 of file qgraphicssceneevent.cpp.

References d.

Referenced by setOrientation().

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◆ phase()

Qt::ScrollPhase QGraphicsSceneWheelEvent::phase ( ) const

Since: 6.2

Returns the scrolling phase of this wheel event.

See also: QWheelEvent::phase

Definition at line 863 of file qgraphicssceneevent.cpp.

References d.

◆ pixelDelta()

QPoint QGraphicsSceneWheelEvent::pixelDelta ( ) const

Since: 6.2

Returns the scrolling distance in pixels on screen. This value is provided on platforms that support high-resolution pixel-based delta values, such as \macos. The value should be used directly to scroll content on screen.

See also: QWheelEvent::pixelDelta

Definition at line 888 of file qgraphicssceneevent.cpp.

References d.

Referenced by setPixelDelta().

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◆ pos()

QPointF QGraphicsSceneWheelEvent::pos ( ) const

Returns the position of the cursor in item coordinates when the wheel event occurred.

See also: scenePos(), screenPos()

Definition at line 716 of file qgraphicssceneevent.cpp.

References d.

Referenced by QGraphicsItemPrivate::remapItemPos(), setPos(), setScenePos(), and setScreenPos().

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◆ scenePos()

QPointF QGraphicsSceneWheelEvent::scenePos ( ) const

Returns the position of the cursor in scene coordinates when the wheel event occurred.

See also: pos(), screenPos()

Definition at line 737 of file qgraphicssceneevent.cpp.

References d.

◆ screenPos()

QPoint QGraphicsSceneWheelEvent::screenPos ( ) const

Returns the position of the cursor in screen coordinates when the wheel event occurred.

See also: pos(), scenePos()

Definition at line 758 of file qgraphicssceneevent.cpp.

References d.

◆ setButtons()

void QGraphicsSceneWheelEvent::setButtons ( Qt::MouseButtons buttons )

Definition at line 787 of file qgraphicssceneevent.cpp.

References buttons(), and d.

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◆ setDelta()

void QGraphicsSceneWheelEvent::setDelta ( int delta )

Definition at line 832 of file qgraphicssceneevent.cpp.

References d, and delta().

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◆ setInverted()

void QGraphicsSceneWheelEvent::setInverted ( bool inverted )

Definition at line 917 of file qgraphicssceneevent.cpp.

References d.

◆ setModifiers()

void QGraphicsSceneWheelEvent::setModifiers ( Qt::KeyboardModifiers modifiers )

Definition at line 808 of file qgraphicssceneevent.cpp.

References d, and modifiers().

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◆ setOrientation()

void QGraphicsSceneWheelEvent::setOrientation ( Qt::Orientation orientation )

Definition at line 850 of file qgraphicssceneevent.cpp.

References d, and orientation().

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◆ setPhase()

void QGraphicsSceneWheelEvent::setPhase ( Qt::ScrollPhase scrollPhase )

Definition at line 872 of file qgraphicssceneevent.cpp.

References d.

◆ setPixelDelta()

void QGraphicsSceneWheelEvent::setPixelDelta ( QPoint pixelDelta )

Definition at line 897 of file qgraphicssceneevent.cpp.

References d, and pixelDelta().

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◆ setPos()

void QGraphicsSceneWheelEvent::setPos ( const QPointF & pos )

Definition at line 725 of file qgraphicssceneevent.cpp.

References d, and pos().

Referenced by QGraphicsItemPrivate::remapItemPos().

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◆ setScenePos()

void QGraphicsSceneWheelEvent::setScenePos ( const QPointF & pos )

Definition at line 746 of file qgraphicssceneevent.cpp.

References d, and pos().

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◆ setScreenPos()

void QGraphicsSceneWheelEvent::setScreenPos ( const QPoint & pos )

Definition at line 767 of file qgraphicssceneevent.cpp.

References d, and pos().

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

qtbase/src/widgets/graphicsview/qgraphicssceneevent.h (05fc3aef53348fb58be6308076e000825b704e58)
qtbase/src/widgets/graphicsview/qgraphicssceneevent.cpp (05fc3aef53348fb58be6308076e000825b704e58)

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QGraphicsSceneWheelEvent()

◆ ~QGraphicsSceneWheelEvent()

Member Function Documentation

◆ buttons()

◆ delta()

◆ isInverted()

◆ modifiers()

◆ orientation()

◆ phase()

◆ pixelDelta()

◆ pos()

◆ scenePos()

◆ screenPos()

◆ setButtons()

◆ setDelta()

◆ setInverted()

◆ setModifiers()

◆ setOrientation()

◆ setPhase()

◆ setPixelDelta()

◆ setPos()

◆ setScenePos()

◆ setScreenPos()