def _make_connecting_path(self, guide_path):
"""Returns a 'thick' path connecting source and destination, by following the given 'guide' path.
Args:
guide_path (QPainterPath)
Returns:
QPainterPath
"""
points, angles = self._points_and_angles_from_path(guide_path)
outgoing_points = []
incoming_points = []
for point, angle in zip(points, angles):
off = self._radius_from_point_and_angle(point, angle)
outgoing_points.append(point + off)
incoming_points.insert(0, point - off)
p0 = guide_path.pointAtPercent(0)
a0 = guide_path.angleAtPercent(0)
off0 = self._radius_from_point_and_angle(p0, a0)
curve_path = QPainterPath(p0 + off0)
self._follow_points(curve_path, outgoing_points)
curve_path.lineTo(incoming_points[0])
self._follow_points(curve_path, incoming_points)
curve_path.lineTo(p0 - off0)
curve_path.closeSubpath()
curve_path.setFillRule(Qt.WindingFill)
return curve_path.simplified()
def shape(self):
path = QPainterPath()
path.setFillRule(Qt.WindingFill)
path.addRect(self.rect())
for handle in self.handles:
path.addRect(handle.boundingRect())
return path
def drawValue(self, p, baseRect, value, arcLength):
# nothing to draw
if value == self.min:
return
# for Line style
if self.barStyle == self.StyleLine:
p.setPen(
QPen(self.palette().highlight().color(), self.dataPenWidth))
p.setBrush(Qt.NoBrush)
p.drawArc(
baseRect.adjusted(self.outlinePenWidth / 2,
self.outlinePenWidth / 2,
-self.outlinePenWidth / 2,
-self.outlinePenWidth / 2),
self.nullPosition * 16, -arcLength * 16)
return
# for Pie and Donut styles
dataPath = QPainterPath()
dataPath.setFillRule(Qt.WindingFill)
# pie segment outer
dataPath.moveTo(baseRect.center())
dataPath.arcTo(baseRect, self.nullPosition, -arcLength)
dataPath.lineTo(baseRect.center())
p.setBrush(self.palette().highlight())
p.setBrush(QColor(255, 255, 255, 255 * 0.3))
# pen = QtGui.QPen(self.palette().shadow().color(), self.dataPenWidth)
pen = QPen(self.palette().shadow().color(), -1)
p.setPen(pen)
p.drawPath(dataPath)
def __paint_title_background(self, painter: "QPainter"):
"""Paints a little background behind the title text, at the top of the node."""
title_rect = self.__graphics_title.boundingRect()
path_title_background = QPainterPath()
path_title_background.setFillRule(Qt.WindingFill)
path_title_background.addRoundedRect(
0,
0,
self.background_paint_area().width(),
title_rect.height(),
self.round_edge_size,
self.round_edge_size,
)
# (Drawing rects to hide the two botton round edges)
path_title_background.addRect(
0,
title_rect.height() - self.round_edge_size,
self.round_edge_size,
self.round_edge_size,
)
path_title_background.addRect(
self.background_paint_area().width() - self.round_edge_size,
title_rect.height() - self.round_edge_size,
self.round_edge_size,
self.round_edge_size,
)
painter.setPen(Qt.NoPen)
painter.setBrush(self.__title_background_brush)
painter.drawPath(path_title_background.simplified())
def shape(self):
"""Returns a shape containing the entire bounding rect, to work better with icon transparency."""
path = QPainterPath()
path.setFillRule(Qt.WindingFill)
path.addRect(self._bg.boundingRect())
return path
