QGraphicsObject¶

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

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

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 PySide2.QtWidgets.QGraphicsObject([parent=None])¶

param parent:

PySide2.QtWidgets.QGraphicsItem

Constructs a QGraphicsObject with parent .

PySide2.QtWidgets.QGraphicsObject.childrenChanged()¶

PySide2.QtWidgets.QGraphicsObject.enabledChanged()¶

PySide2.QtWidgets.QGraphicsObject.grabGesture(type[, flags=Qt.GestureFlags()])¶

Parameters:

type – GestureType
flags – GestureFlags

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

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