1#!/usr/bin/env python
2
3
4#############################################################################
5##
6## Copyright (C) 2013 Riverbank Computing Limited.
7## Copyright (C) 2011 Nokia Corporation 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
45from PyQt5.QtWidgets import QApplication, QWidget
46from PyQt5.QtDBus import QDBusAbstractInterface, QDBusConnection
47
48from ui_controller import Ui_Controller
49
50
51class CarInterface(QDBusAbstractInterface):
52
53    def __init__(self, service, path, connection, parent=None):
54        super(CarInterface, self).__init__(service, path,
55                'org.example.Examples.CarInterface', connection, parent)
56
57    def accelerate(self):
58        self.asyncCall('accelerate')
59
60    def decelerate(self):
61        self.asyncCall('decelerate')
62
63    def turnLeft(self):
64        self.asyncCall('turnLeft')
65
66    def turnRight(self):
67        self.asyncCall('turnRight')
68
69
70class Controller(QWidget):
71
72    def __init__(self, parent=None):
73        super(Controller, self).__init__(parent)
74
75        self.ui = Ui_Controller()
76
77        self.ui.setupUi(self)
78
79        self.car = CarInterface('org.example.CarExample', '/Car',
80                QDBusConnection.sessionBus(), self)
81
82        self.startTimer(1000)
83
84    def timerEvent(self, event):
85        if self.car.isValid():
86            self.ui.label.setText("connected")
87        else:
88            self.ui.label.setText("disconnected")
89
90    def on_accelerate_clicked(self):
91        self.car.accelerate()
92
93    def on_decelerate_clicked(self):
94        self.car.decelerate()
95
96    def on_left_clicked(self):
97        self.car.turnLeft()
98
99    def on_right_clicked(self):
100        self.car.turnRight()
101
102
103if __name__ == '__main__':
104    import sys
105
106    app = QApplication(sys.argv)
107
108    controller = Controller()
109    controller.show()
110
111    sys.exit(app.exec_())
112