1#!/usr/bin/env python 2 3 4############################################################################# 5## 6## Copyright (C) 2013 Riverbank Computing Limited. 7## Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). 8## All rights reserved. 9## 10## This file is part of the examples of PyQt. 11## 12## $QT_BEGIN_LICENSE:BSD$ 13## You may use this file under the terms of the BSD license as follows: 14## 15## "Redistribution and use in source and binary forms, with or without 16## modification, are permitted provided that the following conditions are 17## met: 18## * Redistributions of source code must retain the above copyright 19## notice, this list of conditions and the following disclaimer. 20## * Redistributions in binary form must reproduce the above copyright 21## notice, this list of conditions and the following disclaimer in 22## the documentation and/or other materials provided with the 23## distribution. 24## * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor 25## the names of its contributors may be used to endorse or promote 26## products derived from this software without specific prior written 27## permission. 28## 29## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 30## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 31## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 32## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 33## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 34## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 35## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 39## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." 40## $QT_END_LICENSE$ 41## 42############################################################################# 43 44 45import sys 46 47from PyQt5.QtCore import pyqtProperty, QCoreApplication, QObject, QUrl 48from PyQt5.QtQml import (qmlRegisterType, QQmlComponent, QQmlEngine, 49 QQmlListProperty) 50 51 52QML = b''' 53import People 1.0 54 55BirthdayParty { 56 host: Boy { 57 name: "Bob Jones" 58 shoeSize: 12 59 } 60 61 guests: [ 62 Boy { name: "Leo Hodges" }, 63 Boy { name: "Jack Smith" }, 64 Girl { name: "Anne Brown" } 65 ] 66} 67''' 68 69 70class Person(QObject): 71 def __init__(self, parent=None): 72 super(Person, self).__init__(parent) 73 74 self._name = '' 75 self._shoeSize = 0 76 77 @pyqtProperty(str) 78 def name(self): 79 return self._name 80 81 @name.setter 82 def name(self, name): 83 self._name = name 84 85 @pyqtProperty(int) 86 def shoeSize(self): 87 return self._shoeSize 88 89 @shoeSize.setter 90 def shoeSize(self, shoeSize): 91 self._shoeSize = shoeSize 92 93 94class Boy(Person): 95 pass 96 97 98class Girl(Person): 99 pass 100 101 102class BirthdayParty(QObject): 103 def __init__(self, parent=None): 104 super(BirthdayParty, self).__init__(parent) 105 106 self._host = None 107 self._guests = [] 108 109 @pyqtProperty(Person) 110 def host(self): 111 return self._host 112 113 @host.setter 114 def host(self, host): 115 self._host = host 116 117 @pyqtProperty(QQmlListProperty) 118 def guests(self): 119 return QQmlListProperty(Person, self, self._guests) 120 121 122app = QCoreApplication(sys.argv) 123 124qmlRegisterType(BirthdayParty, "People", 1, 0, "BirthdayParty") 125qmlRegisterType(Person) 126qmlRegisterType(Boy, "People", 1, 0, "Boy") 127qmlRegisterType(Girl, "People", 1, 0, "Girl") 128 129engine = QQmlEngine() 130 131component = QQmlComponent(engine) 132component.setData(QML, QUrl()) 133 134party = component.create() 135 136if party is not None and party.host is not None: 137 print("\"%s\" is having a birthday!" % party.host.name) 138 139 if isinstance(party.host, Boy): 140 print("He is inviting:") 141 else: 142 print("She is inviting:") 143 144 for guest in party.guests: 145 print(" \"%s\"" % guest.name) 146else: 147 for e in component.errors(): 148 print("Error:", e.toString()); 149