def update_spiral(self):
# create a polygon providing the corner points of the spiral
polygon = QPolygon()
for i in xrange(self.window().width()):
x = int(math.cos(i * 0.16) * i)
y = int(math.sin(i * 0.16) * i)
polygon.append(QPoint(x, y))
return polygon
def paintEvent(self, pe):
if self.left_view and self.right_view and self.right_view.model():
vr = self.left_view.visualRect(self.left_view.currentIndex())
self.left_top = self.mapFromGlobal(
self.left_view.viewport().mapToGlobal(vr.topRight())).y()
self.left_bottom = self.mapFromGlobal(
self.left_view.viewport().mapToGlobal(vr.bottomRight())).y()
vr_top = self.right_view.visualRect(self.right_view.model().index(
0, 0))
vr = self.right_view.visualRect(self.right_view.model().index(
self.right_view.model().rowCount() - 1, 0))
self.right_top = self.mapFromGlobal(
self.left_view.viewport().mapToGlobal(vr_top.topLeft())).y()
self.right_bottom = self.mapFromGlobal(
self.left_view.viewport().mapToGlobal(vr.bottomLeft())).y()
w = self.minimumWidth() - 1
p = QPainter(self)
p.setBrush(QBrush(QColor(210, 255, 210)))
pen = QPen()
pen.setColor(Qt.transparent)
p.setPen(pen)
poly = QPolygon()
poly.append(QPoint(0, self.left_top))
poly.append(QPoint(w, self.right_top))
poly.append(QPoint(w, self.right_bottom))
poly.append(QPoint(0, self.left_bottom))
p.drawConvexPolygon(poly)
p.setRenderHint(QPainter.Antialiasing)
pen.setColor(Qt.GlobalColor.black)
pen.setWidth(2)
p.setPen(pen)
p.drawLine(0, self.left_top, w, self.right_top)
p.drawLine(0, self.left_bottom, w, self.right_bottom)
