QGraphicsObject

The QGraphicsObject class provides a base class for all graphics items that require signals, slots and properties. More…

Inherited by: QGraphicsWidget, QGraphicsProxyWidget, QGraphicsTextItem, QGraphicsSvgItem, QGraphicsVideoItem, QLegend, QChart, QPolarChart

New in version 4.6.

Synopsis

Functions

• def grabGesture (type[, flags=Qt.GestureFlags()])

• def ungrabGesture (type)

Signals

• def childrenChanged ()

• def enabledChanged ()

• def heightChanged ()

• def opacityChanged ()

• def parentChanged ()

• def rotationChanged ()

• def scaleChanged ()

• def visibleChanged ()

• def widthChanged ()

• def xChanged ()

• def yChanged ()

• def zChanged ()

Detailed Description

The class extends a QGraphicsItem with QObject ‘s signal/slot and property mechanisms. It maps many of QGraphicsItem ‘s basic setters and getters to properties and adds notification signals for many of them.

Parents and Children

Each graphics object can be constructed with a parent item. This ensures that the item will be destroyed when its parent item is destroyed. Although QGraphicsObject inherits from both QObject and QGraphicsItem , you should use the functions provided by QGraphicsItem , not QObject , to manage the relationships between parent and child items.

The relationships between items can be explored using the parentItem() and childItems() functions. In the hierarchy of items in a scene, the parentObject() and parentWidget() functions are the equivalent of the parent() and parentWidget() functions for QWidget subclasses.

See also

QGraphicsWidget

class PySide6.QtWidgets.QGraphicsObject([parent=None])

Parameters

parent – PySide6.QtWidgets.QGraphicsItem

Constructs a QGraphicsObject with parent.

PySide6.QtWidgets.QGraphicsObject.childrenChanged()

PySide6.QtWidgets.QGraphicsObject.enabledChanged()

PySide6.QtWidgets.QGraphicsObject.grabGesture(type[, flags=Qt.GestureFlags()])

Parameters

• type – GestureType

• flags – GestureFlags

Subscribes the graphics object to the given gesture with specific flags.

See also

ungrabGesture() QGestureEvent

PySide6.QtWidgets.QGraphicsObject.heightChanged()

PySide6.QtWidgets.QGraphicsObject.opacityChanged()

PySide6.QtWidgets.QGraphicsObject.parentChanged()

PySide6.QtWidgets.QGraphicsObject.rotationChanged()

PySide6.QtWidgets.QGraphicsObject.scaleChanged()

PySide6.QtWidgets.QGraphicsObject.ungrabGesture(type)

Parameters

type – GestureType

Unsubscribes the graphics object from the given gesture.

See also

grabGesture() QGestureEvent

PySide6.QtWidgets.QGraphicsObject.visibleChanged()

PySide6.QtWidgets.QGraphicsObject.widthChanged()

PySide6.QtWidgets.QGraphicsObject.xChanged()

PySide6.QtWidgets.QGraphicsObject.yChanged()

PySide6.QtWidgets.QGraphicsObject.zChanged()