def boundingRect(self):
# This refreshes the bounding rect
self.setLine(QLineF(self._start.scenePos(), self._end.scenePos()))
return QGraphicsLineItem.boundingRect(self)
class RefsansView(QGraphicsView):
pivotdist = 20
def __init__(self, parent=None):
scene = QGraphicsScene()
QGraphicsView.__init__(self, scene)
self.setRenderHints(QPainter.Antialiasing)
self._tube = Tube(scene=scene)
self._tube.setRotation(1)
self._yoke = Yoke(scene=scene)
t1 = QTransform()
t1.translate(500, 0)
self._yoke.setTransform(t1)
self._pivotline = QGraphicsLineItem(-200, 0, 700, 0)
scene.addItem(self._pivotline)
self._pivot = QGraphicsRectItem(0, 0, 6, 10)
t2 = QTransform()
t2.translate(-3, -10)
self._pivot.setTransform(t2)
self._pivot.setBrush(QBrush(QColor('#1F1F1F')))
scene.addItem(self._pivot)
for i in range(13):
txt = '%d' % (i + 1)
self.t = QGraphicsTextItem(txt)
bw = self.t.boundingRect().size().width()
chrwidth = bw / (len(txt) + 1)
x = (i - 9) * self.pivotdist - chrwidth / 2 + bw / len(txt)
self.t.setX(x)
scene.addItem(self.t)
self._det = Detector(parent=self._tube, scene=scene)
self.values = {
'tubeangle': -1.0,
'pivot': 1,
'detpos': 620,
}
self.targets = self.values.copy()
self.status = {
'tubeangle': status.OK,
'pivot': status.OK,
'detpos': status.OK,
}
def resizeEvent(self, rsevent):
s = rsevent.size()
w, h = s.width(), s.height()
scale = min(
w / self._pivotline.boundingRect().width(),
h / (self._yoke.boundingRect().height() + 10 +
self.t.boundingRect().y() + self.t.boundingRect().height()))
transform = self.transform()
transform.reset()
transform.scale(scale, scale)
self.setTransform(transform)
QGraphicsView.resizeEvent(self, rsevent)
def update(self):
self._tube.setState(self.status['tubeangle'])
self._tube.setRotation(-self.values['tubeangle'])
p = (self.values['pivot'] - 9) * self.pivotdist
self._pivot.setX(p)
self._tube.setX(p)
self._yoke.setX(p)
self._det.setState(self.status['detpos'])
# 1 / 20 is the scaling of the tube length
self._det.setX(self.values['detpos'] / 20)
QGraphicsView.update(self)