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#!/usr/bin/python
#############################################################################
##
## Copyright (C) 2016 The Qt Company Ltd.
## Contact: http://www.qt.io/licensing/
##
## This file is part of the Qt for Python examples of the Qt Toolkit.
##
## $QT_BEGIN_LICENSE:BSD$
## 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 The Qt Company Ltd 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 __future__ import print_function
"""PySide2 port of the qml/tutorials/extending-qml/chapter3-bindings example from Qt v5.x"""
import sys, os
sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', '..', 'utils'))
from utils import text_type
from PySide2.QtCore import Property, Signal, Slot, QUrl, Qt
from PySide2.QtGui import QGuiApplication, QPen, QPainter, QColor
from PySide2.QtQml import qmlRegisterType
from PySide2.QtQuick import QQuickPaintedItem, QQuickView
class PieChart (QQuickPaintedItem):
def __init__(self, parent = None):
QQuickPaintedItem.__init__(self, parent)
self._name = u''
self._color = QColor()
def paint(self, painter):
pen = QPen(self._color, 2)
painter.setPen(pen);
painter.setRenderHints(QPainter.Antialiasing, True);
painter.drawPie(self.boundingRect().adjusted(1,1,-1,-1), 90 * 16, 290 * 16);
def getColor(self):
return self._color
def setColor(self, value):
if value != self._color:
self._color = value
self.update()
self.colorChanged.emit()
def getName(self):
return self._name
def setName(self, value):
self._name = value
colorChanged = Signal()
color = Property(QColor, getColor, setColor, notify=colorChanged)
name = Property(text_type, getName, setName)
chartCleared = Signal()
@Slot() # This should be something like @Invokable
def clearChart(self):
self.setColor(Qt.transparent)
self.update()
self.chartCleared.emit()
if __name__ == '__main__':
app = QGuiApplication(sys.argv)
qmlRegisterType(PieChart, 'Charts', 1, 0, 'PieChart');
view = QQuickView()
view.setResizeMode(QQuickView.SizeRootObjectToView)
qmlFile = os.path.join(os.path.dirname(__file__), 'app.qml')
view.setSource(QUrl.fromLocalFile(os.path.abspath(qmlFile)))
if view.status() == QQuickView.Error:
sys.exit(-1)
view.show()
res = app.exec_()
# Deleting the view before it goes out of scope is required to make sure all child QML instances
# are destroyed in the correct order.
del view
sys.exit(res)
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