QGraphicsSceneWheelEvent Class Reference

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

#include <qgraphicssceneevent.h>

Inheritance diagram for QGraphicsSceneWheelEvent:

Public Functions
Qt::MouseButtons	buttons () const
	Returns the mouse buttons that were pressed when the wheel event occurred. More...
int	delta () const
	Returns the distance that the wheel is rotated, in eighths (1/8s) of a degree. More...
Qt::KeyboardModifiers	modifiers () const
	Returns the keyboard modifiers that were active when the wheel event occurred. More...
Qt::Orientation	orientation () const
	Returns the wheel orientation. More...
QPointF	pos () const
	Returns the position of the cursor in item coordinates when the wheel event occurred. More...
	QGraphicsSceneWheelEvent (Type type=None)
	Constructs a QGraphicsSceneWheelEvent of type type, which is always QEvent::GraphicsSceneWheel. More...
QPointF	scenePos () const
	Returns the position of the cursor in scene coordinates when the wheel event occurred. More...
QPoint	screenPos () const
	Returns the position of the cursor in screen coordinates when the wheel event occurred. More...
void	setButtons (Qt::MouseButtons buttons)
void	setDelta (int delta)
void	setModifiers (Qt::KeyboardModifiers modifiers)
void	setOrientation (Qt::Orientation orientation)
void	setPos (const QPointF &pos)
void	setScenePos (const QPointF &pos)
void	setScreenPos (const QPoint &pos)
	~QGraphicsSceneWheelEvent ()
	Destroys the QGraphicsSceneWheelEvent. More...
Public Functions inherited from QGraphicsSceneEvent
	QGraphicsSceneEvent (Type type)
	Constructs a generic graphics scene event of the specified type. More...
void	setWidget (QWidget *widget)
	Sets the widget related to this event. More...
QWidget *	widget () const
	Returns the widget where the event originated, or 0 if the event originates from another application. More...
	~QGraphicsSceneEvent ()
	Destroys the event. More...
Public Functions inherited from QEvent
void	accept ()
	Sets the accept flag of the event object, the equivalent of calling setAccepted(true). More...
void	ignore ()
	Clears the accept flag parameter of the event object, the equivalent of calling setAccepted(false). More...
bool	isAccepted () const
	QEvent (Type type)
	Contructs an event object of type type. More...
void	setAccepted (bool accepted)
bool	spontaneous () const
	Returns true if the event originated outside the application (a system event); otherwise returns false. More...
Type	type () const
	Returns the event type. More...
virtual	~QEvent ()
	Destroys the event. More...

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, 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, AccessibilityPrepare = 86, 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, 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,   AccessibilityHelp = 119, AccessibilityDescription = 130, AcceptDropsChange = 152, MenubarUpdated = 153,   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, 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,   MacGLClearDrawable = 191, StateMachineSignal = 192, StateMachineWrapped = 193, TouchBegin = 194,   TouchUpdate = 195, TouchEnd = 196, NativeGesture = 197, RequestSoftwareInputPanel = 199,   CloseSoftwareInputPanel = 200, UpdateSoftKeys = 201, WinIdChange = 203, Gesture = 198,   GestureOverride = 202, PlatformPanel = 212, User = 1000, MaxUser = 65535 }
	This enum type defines the valid event types in Qt. More...
Static Public Functions inherited from QEvent
static int	registerEventType (int hint=-1)
	Registers and returns a custom event type. More...
Protected Functions inherited from QGraphicsSceneEvent
	QGraphicsSceneEvent (QGraphicsSceneEventPrivate &dd, Type type=None)
	Constructs a generic graphics scene event. More...
Protected Variables inherited from QGraphicsSceneEvent
QScopedPointer< QGraphicsSceneEventPrivate >	d_ptr
Protected Variables inherited from QEvent
QEventPrivate *	d
ushort	t

Detailed Description

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

Note

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

Since

4.2

QWheelEvents 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 133 of file qgraphicssceneevent.h.

Constructors and Destructors

QGraphicsSceneWheelEvent()

QGraphicsSceneWheelEvent::QGraphicsSceneWheelEvent

(

Type

type = None

)

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

Warning

This function is not part of the public interface.

Definition at line 696 of file qgraphicssceneevent.cpp.

    : QGraphicsSceneEvent(*new QGraphicsSceneWheelEventPrivate, type)
{
}

~QGraphicsSceneWheelEvent()

QGraphicsSceneWheelEvent::~QGraphicsSceneWheelEvent

(

)

Destroys the QGraphicsSceneWheelEvent.

Definition at line 704 of file qgraphicssceneevent.cpp.

{
}

Functions

buttons()

Qt::MouseButtons QGraphicsSceneWheelEvent::buttons

(

)

const

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

See also

modifiers()

Definition at line 776 of file qgraphicssceneevent.cpp.

Referenced by cloneEvent(), and setButtons().

{
    Q_D(const QGraphicsSceneWheelEvent);
    return d->buttons;
}

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 821 of file qgraphicssceneevent.cpp.

Referenced by cloneEvent(), setDelta(), and QDeclarativeFlickable::wheelEvent().

{
    Q_D(const QGraphicsSceneWheelEvent);
    return d->delta;
}

modifiers()

Qt::KeyboardModifiers QGraphicsSceneWheelEvent::modifiers

(

)

const

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

See also

buttons()

Definition at line 797 of file qgraphicssceneevent.cpp.

Referenced by cloneEvent(), and setModifiers().

{
    Q_D(const QGraphicsSceneWheelEvent);
    return d->modifiers;
}

orientation()

Qt::Orientation QGraphicsSceneWheelEvent::orientation

(

)

const

Returns the wheel orientation.

Definition at line 839 of file qgraphicssceneevent.cpp.

Referenced by cloneEvent(), setOrientation(), and QDeclarativeFlickable::wheelEvent().

{
    Q_D(const QGraphicsSceneWheelEvent);
    return d->orientation;
}

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 714 of file qgraphicssceneevent.cpp.

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

{
    Q_D(const QGraphicsSceneWheelEvent);
    return d->pos;
}

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 735 of file qgraphicssceneevent.cpp.

Referenced by cloneEvent(), and QGraphicsScene::wheelEvent().

{
    Q_D(const QGraphicsSceneWheelEvent);
    return d->scenePos;
}

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 756 of file qgraphicssceneevent.cpp.

Referenced by cloneEvent(), and QGraphicsScene::wheelEvent().

{
    Q_D(const QGraphicsSceneWheelEvent);
    return d->screenPos;
}

setButtons()

void QGraphicsSceneWheelEvent::setButtons

(

Qt::MouseButtons

buttons

)

Warning

This function is not part of the public interface.

Definition at line 785 of file qgraphicssceneevent.cpp.

Referenced by cloneEvent(), and QGraphicsView::wheelEvent().

{
    Q_D(QGraphicsSceneWheelEvent);
    d->buttons = buttons;
}

setDelta()

void QGraphicsSceneWheelEvent::setDelta

(

int

delta

)

Warning

This function is not part of the public interface.

Definition at line 830 of file qgraphicssceneevent.cpp.

Referenced by cloneEvent(), and QGraphicsView::wheelEvent().

{
    Q_D(QGraphicsSceneWheelEvent);
    d->delta = delta;
}

setModifiers()

void QGraphicsSceneWheelEvent::setModifiers

(

Qt::KeyboardModifiers

modifiers

)

Warning

This function is not part of the public interface.

Definition at line 806 of file qgraphicssceneevent.cpp.

Referenced by cloneEvent(), and QGraphicsView::wheelEvent().

{
    Q_D(QGraphicsSceneWheelEvent);
    d->modifiers = modifiers;
}

setOrientation()

void QGraphicsSceneWheelEvent::setOrientation

(

Qt::Orientation

orientation

)

Warning

This function is not part of the public interface.

Definition at line 848 of file qgraphicssceneevent.cpp.

Referenced by cloneEvent(), and QGraphicsView::wheelEvent().

{
    Q_D(QGraphicsSceneWheelEvent);
    d->orientation = orientation;
}

setPos()

void QGraphicsSceneWheelEvent::setPos

(

const QPointF &

pos

)

Warning

This function is not part of the public interface.

Definition at line 723 of file qgraphicssceneevent.cpp.

Referenced by cloneEvent(), QGraphicsItemPrivate::remapItemPos(), and QGraphicsScene::wheelEvent().

{
    Q_D(QGraphicsSceneWheelEvent);
    d->pos = pos;
}

setScenePos()

void QGraphicsSceneWheelEvent::setScenePos

(

const QPointF &

pos

)

Warning

This function is not part of the public interface.

Definition at line 744 of file qgraphicssceneevent.cpp.

Referenced by cloneEvent(), and QGraphicsView::wheelEvent().

{
    Q_D(QGraphicsSceneWheelEvent);
    d->scenePos = pos;
}

setScreenPos()

void QGraphicsSceneWheelEvent::setScreenPos

(

const QPoint &

pos

)

Warning

This function is not part of the public interface.

Definition at line 765 of file qgraphicssceneevent.cpp.

Referenced by cloneEvent(), and QGraphicsView::wheelEvent().

{
    Q_D(QGraphicsSceneWheelEvent);
    d->screenPos = pos;
}

---

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

• /src/gui/graphicsview/qgraphicssceneevent.h
• /src/gui/graphicsview/qgraphicssceneevent.cpp