I am attempting to produce a compass widget programatically that looks much like this:
I want each "slice" of the compass to act as a button for interaction w/ the rest of the app. To that end, I figured making them out of QAbstractButtons made the most logical sense, and started down this path:
class compassWedge(QAbstractButton):
def __init__(self, start_angle, parent=None):
super().__init__(parent)
self.start = start_angle
self.setFixedSize(550, 550)
self.setMouseTracking(True)
def paintEvent(self, event):
painter = QPainter(self)
painter.setRenderHint(QPainter.Antialiasing)
brush = QBrush()
if self.underMouse():
brush.setColor(Qt.black)
else:
brush.setColor(Qt.white)
pen = QPen(Qt.black)
pen.setWidth(5)
painter.setBrush(brush)
painter.setPen(pen)
painter.drawPie(25, 25, 500, 500, self.start, 45 * 16)
painter.end()
class compassApplet(QWidget):
def __init__(self, parent=None):
super().__init__(parent)
self.setFixedSize(550, 550)
self.wedges = []
for start in range(0, 360 * 16, 45 * 16):
self.wedges.append(compassWedge(start, self))
And visually this works perfectly so far:
The problem is, for underMouse(), the entirety of the 550x550 slice widget area is considered. I want instead to detect when the mouse is inside the pixels generated within the paintEvent for each slice, i.e. the pie area created by painter.drawPie(...) in each object.
How can I accomplish this without having to do complicated geometry to check mouse position against pie-shaped areas?
