def draw_path(self, cp):
self.cr.pen().setCapStyle(QtCore.Qt.RoundCap)
pts = [
QtCore.QLineF(QtCore.QPointF(cp[i][0], cp[i][1]),
QtCore.QPointF(cp[i + 1][0], cp[i + 1][1]))
for i in range(len(cp) - 1)
]
self.cr.drawLines(pts)
def draw_arrowhead(self, cr, x1, y1, x2, y2):
i1, j1, i2, j2 = self.calcVertexes(x1, y1, x2, y2)
self.fill(cr, True)
cr.pen().setJoinStyle(QtCore.Qt.MiterJoin)
cr.drawPolygon(
QtGui.QPolygonF([
QtCore.QPointF(x2, y2),
QtCore.QPointF(i1, j1),
QtCore.QPointF(i2, j2)
]))
cr.pen().setJoinStyle(QtCore.Qt.BevelJoin)
self.fill(cr, False)
def draw_arrowhead(self, cr, x1, y1, x2, y2):
i1, j1, i2, j2 = self.calcVertexes(x1, y1, x2, y2)
alpha = getattr(self, 'alpha', 1.0)
self.set_fill(cr, True, alpha=alpha)
cr.pen().setJoinStyle(QtCore.Qt.MiterJoin)
cr.drawPolygon(
QPolygonF([
QtCore.QPointF(x2, y2),
QtCore.QPointF(i1, j1),
QtCore.QPointF(i2, j2)
]))
cr.pen().setJoinStyle(QtCore.Qt.BevelJoin)
self.set_fill(cr, False)
def draw(self):
cx1, cy1, cradius = self.calc_radius(self.x, self.y, self.radius)
# this is necessary to work around a bug in Qt--radius of 0
# causes a crash
cradius = max(cradius, 0.000001)
cr = self.setup_cr()
pt = QtCore.QPointF(cx1, cy1)
cr.drawEllipse(pt, float(cradius), float(cradius))
if self.editing:
self.draw_edit(cr)
elif self.showcap:
self.draw_caps(cr, self.cap, ((cx1, cy1), ))
def draw_circle(self, cx, cy, cradius):
# this is necessary to work around a bug in Qt--radius of 0
# causes a crash
cradius = max(cradius, 0.000001)
pt = QtCore.QPointF(cx, cy)
self.cr.drawEllipse(pt, float(cradius), float(cradius))
