class QGraphicsSceneWheelEvent

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

Synopsis

Methods

• def __init__()

• def buttons()

• def delta()

• def isInverted()

• def modifiers()

• def orientation()

• def phase()

• def pixelDelta()

• def pos()

• def scenePos()

• def screenPos()

• def setButtons()

• def setDelta()

• def setInverted()

• def setModifiers()

• def setOrientation()

• def setPhase()

• def setPixelDelta()

• def setPos()

• def setScenePos()

• def setScreenPos()

Note

This documentation may contain snippets that were automatically translated from C++ to Python. We always welcome contributions to the snippet translation. If you see an issue with the translation, you can also let us know by creating a ticket on https:/bugreports.qt.io/projects/PYSIDE

Detailed Description

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

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

__init__([type=QEvent.Type.None])

Parameters:

type – Type

buttons()

Return type:

Combination of MouseButton

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

See also

modifiers()

delta()

Return type:

int

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).

isInverted()

Return type:

bool

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

modifiers()

Return type:

Combination of KeyboardModifier

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

See also

buttons()

orientation()

Return type:

Orientation

Returns the wheel orientation.

phase()

Return type:

ScrollPhase

Returns the scrolling phase of this wheel event.

See also

phase

pixelDelta()

Return type:

QPoint

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

pixelDelta

pos()

Return type:

QPointF

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

See also

scenePos() screenPos()

scenePos()

Return type:

QPointF

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

See also

pos() screenPos()

screenPos()

Return type:

QPoint

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

See also

pos() scenePos()

setButtons(buttons)

Parameters:

buttons – Combination of MouseButton

setDelta(delta)

Parameters:

delta – int

setInverted(inverted)

Parameters:

inverted – bool

setModifiers(modifiers)

Parameters:

modifiers – Combination of KeyboardModifier

setOrientation(orientation)

Parameters:

orientation – Orientation

setPhase(scrollPhase)

Parameters:

scrollPhase – ScrollPhase

setPixelDelta(delta)

Parameters:

delta – QPoint

setPos(pos)

Parameters:

pos – QPointF

setScenePos(pos)

Parameters:

pos – QPointF

setScreenPos(pos)

Parameters:

pos – QPoint