text: #!/usr/bin/env python
  
  
  #############################################################################
  ##
  ## Copyright (C) 2018 Riverbank Computing Limited.
  ## Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
  ##
  ## This file is part of the examples of PyQt.
  ##
  ## $QT_BEGIN_LICENSE:BSD$
  ## You may use this file under the terms of the BSD license as follows:
  ##
  ## "Redistribution and use in source and binary forms, with or without
  ## modification, are permitted provided that the following conditions are
  ## met:
  ##   * Redistributions of source code must retain the above copyright
  ##     notice, this list of conditions and the following disclaimer.
  ##   * Redistributions in binary form must reproduce the above copyright
  ##     notice, this list of conditions and the following disclaimer in
  ##     the documentation and/or other materials provided with the
  ##     distribution.
  ##   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
  ##     of its contributors may be used to endorse or promote products derived
  ##     from this software without specific prior written permission.
  ##
  ##
  ## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  ## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  ## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  ## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  ## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  ## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  ## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  ## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  ## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  ## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  ## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
  ## $QT_END_LICENSE$
  ##
  #############################################################################
  
  
  from PySide2.QtCore import Property, QRectF, QUrl
  from PySide2.QtGui import QColor, QGuiApplication, QPainter, QPen
  from PySide2.QtQml import qmlRegisterType
  from PySide2.QtQuick import QQuickItem, QQuickPaintedItem, QQuickView
  
  
  class PieSlice(QQuickPaintedItem):
  
      @Property(QColor)
      def color(self):
          return self._color
  
      @color.setter
      def color(self, color):
          self._color = QColor(color)
  
      def __init__(self, parent=None):
          super(PieSlice, self).__init__(parent)
  
          self._color = QColor()
  
      def paint(self, painter):
          painter.setPen(QPen(self._color, 2))
          painter.setRenderHints(QPainter.Antialiasing, True)
  
          rect = QRectF(0, 0, self.width(), self.height()).adjusted(1, 1, -1, -1)
          painter.drawPie(rect, 90 * 16, 290 * 16)
  
  
  class PieChart(QQuickItem):
  
      @Property(PieSlice)
      def pieSlice(self):
          return self._pieSlice
  
      @pieSlice.setter
      def pieSlice(self, pieSlice):
          self._pieSlice = pieSlice
          pieSlice.setParentItem(self)
  
      @pyqtProperty(str)
      def name(self):
          return self._name
  
      @name.setter
      def name(self, name):
          self._name = name
  
      def __init__(self, parent=None):
          super(PieChart, self).__init__(parent)
  
          self._pieSlice = None
          self._name = ''
  
  
  if __name__ == '__main__':
      import os
      import sys
  
      app = QGuiApplication(sys.argv)
  
      qmlRegisterType(PieChart, "Charts", 1, 0, "PieChart")
      qmlRegisterType(PieSlice, "Charts", 1, 0, "PieSlice")
  
      view = QQuickView()
      view.setResizeMode(QQuickView.SizeRootObjectToView)
      view.setSource(
              QUrl.fromLocalFile(
                      os.path.join(os.path.dirname(os.path.abspath(__file__)),
                              'app.qml')))
      view.show()
  
      sys.exit(app.exec_())
  