From 584560093535b127506edf9a5d20b7bdbc42c730 Mon Sep 17 00:00:00 2001 From: Cristian Maureira-Fredes Date: Fri, 6 Jul 2018 16:33:25 +0200 Subject: Add nested donuts example Task-number: PYSIDE-738 Change-Id: I16c8bbfaa8c7ed6fc08ed6b16c9bdf8dd23ce0a2 Reviewed-by: Friedemann Kleint --- examples/charts/nesteddonuts.py | 137 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 137 insertions(+) create mode 100644 examples/charts/nesteddonuts.py diff --git a/examples/charts/nesteddonuts.py b/examples/charts/nesteddonuts.py new file mode 100644 index 000000000..bee3c1c79 --- /dev/null +++ b/examples/charts/nesteddonuts.py @@ -0,0 +1,137 @@ +#!/usr/bin/python + +############################################################################# +## +## Copyright (C) 2018 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." +## +## $QT_END_LICENSE$ +## +############################################################################# + +"""PySide2 port of the Nested Donuts example from Qt v5.x""" + +import sys + +from PySide2.QtCore import Qt, QTimer +from PySide2.QtGui import QPainter +from PySide2.QtWidgets import QApplication, QGridLayout, QWidget +from PySide2.QtCharts import QtCharts + +from random import randrange +from functools import partial + +class Widget(QWidget): + def __init__(self): + QWidget.__init__(self) + self.setMinimumSize(800, 600) + self.donuts = [] + self.chart_view = QtCharts.QChartView() + self.chart_view.setRenderHint(QPainter.Antialiasing) + self.chart = self.chart_view.chart() + self.chart.legend().setVisible(False) + self.chart.setTitle("Nested donuts demo") + self.chart.setAnimationOptions(QtCharts.QChart.AllAnimations) + + self.min_size = 0.1 + self.max_size = 0.9 + self.donut_count = 5 + + self.setup_donuts() + + # create main layout + self.main_layout = QGridLayout(self) + self.main_layout.addWidget(self.chart_view, 1, 1) + self.setLayout(self.main_layout) + + self.update_timer = QTimer(self) + self.update_timer.timeout.connect(self.update_rotation) + self.update_timer.start(1250) + + def setup_donuts(self): + for i in range(self.donut_count): + donut = QtCharts.QPieSeries() + slccount = randrange(3, 6) + for j in range(slccount): + value = randrange(100, 200) + + slc = QtCharts.QPieSlice(str(value), value) + slc.setLabelVisible(True) + slc.setLabelColor(Qt.white) + slc.setLabelPosition(QtCharts.QPieSlice.LabelInsideTangential) + + # Connection using an extra parameter for the slot + slc.hovered[bool].connect(partial(self.explode_slice, slc=slc)) + + donut.append(slc) + size = (self.max_size - self.min_size)/self.donut_count + donut.setHoleSize(self.min_size + i * size) + donut.setPieSize(self.min_size + (i + 1) * size) + + self.donuts.append(donut) + self.chart_view.chart().addSeries(donut) + + + + def update_rotation(self): + for donut in self.donuts: + phase_shift = randrange(-50, 100) + donut.setPieStartAngle(donut.pieStartAngle() + phase_shift) + donut.setPieEndAngle(donut.pieEndAngle() + phase_shift) + + def explode_slice(self, exploded, slc): + if exploded: + self.update_timer.stop() + slice_startangle = slc.startAngle() + slice_endangle = slc.startAngle() + slc.angleSpan() + + donut = slc.series() + idx = self.donuts.index(donut) + for i in range(idx + 1, len(self.donuts)): + self.donuts[i].setPieStartAngle(slice_endangle) + self.donuts[i].setPieEndAngle(360 + slice_startangle) + else: + for donut in self.donuts: + donut.setPieStartAngle(0) + donut.setPieEndAngle(360) + + self.update_timer.start() + + slc.setExploded(exploded) + +if __name__ == "__main__": + app = QApplication(sys.argv) + w = Widget() + w.show() + sys.exit(app.exec_()) -- cgit v1.2.3