def paint(self, painter, option, widget=None):
painter_inverted = QPainter()
brect= QGraphicsProxyWidget.boundingRect(self)
invertedColor = QImage(brect.width(),brect.height(),QImage.Format_RGB32)
painter_inverted.begin(invertedColor)
QGraphicsProxyWidget.paint(self,painter_inverted, option, widget)
painter_inverted.end()
painter.drawImage(0,0,invertedColor.rgbSwapped())
def testQGraphicsProxyWidget(self):
scene = QGraphicsScene()
proxy = QGraphicsProxyWidget(None, Qt.Window)
widget = QLabel('Widget')
proxy.setWidget(widget)
proxy.setCacheMode(QGraphicsItem.DeviceCoordinateCache)
scene.addItem(proxy)
scene.setSceneRect(scene.itemsBoundingRect())
view = QGraphicsView(scene)
view.setRenderHints(QPainter.Antialiasing|QPainter.SmoothPixmapTransform)
view.setViewportUpdateMode(QGraphicsView.BoundingRectViewportUpdate)
view.show()
timer = QTimer.singleShot(100, self.app.quit)
self.app.exec_()
def __init__(self, parent=None, wFlags=0):
QGraphicsProxyWidget.__init__(self, parent, wFlags)
def __init__(self, parent=None, wFlags=0):
QGraphicsProxyWidget.__init__(self, parent, wFlags)
def createItem(minimum, preferred, maximum, name):
w = QGraphicsProxyWidget()
w.setWidget(QPushButton(name))
w.setMinimumSize(minimum)
w.setPreferredSize(preferred)
w.setMaximumSize(maximum)
w.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Preferred)
return w
def boundingRect(self):
return QGraphicsProxyWidget.boundingRect(self).adjusted(0, 0, 0, 0);
def __init__(self, parent=None):
QGraphicsProxyWidget.__init__(self, parent)
