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from ..Qt import QtWidgets, QtGui, QtCore
from ..functions import mkPen
class PenPreviewLabel(QtWidgets.QLabel):
def __init__(self, param):
super().__init__()
self.param = param
self.pen = QtGui.QPen(self.param.pen)
param.sigValueChanging.connect(self.onPenChanging)
def onPenChanging(self, param, val):
self.pen = QtGui.QPen(val)
self.update()
def paintEvent(self, ev):
path = QtGui.QPainterPath()
displaySize = self.size()
w, h = displaySize.width(), displaySize.height()
# draw a squiggle with the pen
path.moveTo(w * .2, h * .2)
path.lineTo(w * .4, h * .8)
path.cubicTo(w * .5, h * .1, w * .7, h * .1, w * .8, h * .8)
painter = QtGui.QPainter(self)
painter.setPen(self.pen)
painter.drawPath(path)
# No indication of "cosmetic" from just the paint path, so add something extra in that case
if self.pen.isCosmetic():
painter.setPen(mkPen('k'))
painter.drawText(QtCore.QPointF(w * 0.81, 12), 'C')
painter.end()
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