Source code for pyqtgraph.widgets.PathButton

from ..Qt import QtGui, QtCore
from .. import functions as fn

__all__ = ['PathButton']


[docs]class PathButton(QtGui.QPushButton): """Simple PushButton extension which paints a QPainterPath on its face"""
[docs] def __init__(self, parent=None, path=None, pen='default', brush=None, size=(30,30)): QtGui.QPushButton.__init__(self, parent) self.path = None if pen == 'default': pen = 'k' self.setPen(pen) self.setBrush(brush) if path is not None: self.setPath(path) if size is not None: self.setFixedWidth(size[0]) self.setFixedHeight(size[1])
def setBrush(self, brush): self.brush = fn.mkBrush(brush) def setPen(self, *args, **kwargs): self.pen = fn.mkPen(*args, **kwargs) def setPath(self, path): self.path = path self.update() def paintEvent(self, ev): QtGui.QPushButton.paintEvent(self, ev) margin = 7 geom = QtCore.QRectF(0, 0, self.width(), self.height()).adjusted(margin, margin, -margin, -margin) rect = self.path.boundingRect() scale = min(geom.width() / float(rect.width()), geom.height() / float(rect.height())) p = QtGui.QPainter(self) p.setRenderHint(p.Antialiasing) p.translate(geom.center()) p.scale(scale, scale) p.translate(-rect.center()) p.setPen(self.pen) p.setBrush(self.brush) p.drawPath(self.path) p.end()