def paint(
self,
painter: QtGui.QPainter,
option: QtWidgets.QStyleOptionGraphicsItem,
widget: QtWidgets.QWidget = None,
):
view = next(iter(self.scene().views()))
painter.setRenderHint(QtGui.QPainter.Antialiasing)
painter.setFont(self.font)
painter.setPen(self.pen)
fm = painter.fontMetrics()
painter.drawLine(self.line)
if not self.line.p1().isNull():
pen = QtGui.QPen(self.pen)
pen.setWidth(10)
painter.setPen(pen)
painter.drawPoints([self.line.p1(), self.line.p2()])
painter.setPen(self.pen)
if view is not None and self.text != "":
angle = self.line.angle()
if 90 < angle < 270:
angle -= 180
center = view.mapFromScene(self.line.center())
length = (
view.mapFromScene(QtCore.QRectF(0, 0, self.line.length(), 1))
.boundingRect()
.width()
)
width = fm.boundingRect(self.text).width()
if width < length * 0.9:
painter.save()
painter.resetTransform()
transform = QtGui.QTransform()
transform.translate(center.x(), center.y())
transform.rotate(-angle)
painter.setTransform(transform)
painter.drawText(-width / 2.0, -fm.descent(), self.text)
painter.restore()
def patch_paintEvent(self, event):
p = QPainter(self)
rect = event.rect()
# Translate
transform = QTransform()
transform.translate(rect.width() / 2, rect.height() / 2)
transform.rotate(self.current_rotation)
transform.translate(-rect.width() / 2, -rect.height() / 2)
p.setTransform(transform)
# Calculate rect to center the pixmap on the QLabel.
prect = self.pixmap().rect()
rect.adjust(
(rect.width() - prect.width()) / 2,
self.current_y + (rect.height() - prect.height()) / 2,
-(rect.width() - prect.width()) / 2,
self.current_y + -(rect.height() - prect.height()) / 2,
)
p.drawPixmap(rect, self.pixmap())
