1#!/usr/bin/env python
2
3
4#############################################################################
5##
6## Copyright (C) 2013 Riverbank Computing Limited.
7## All rights reserved.
8##
9## This file is part of the examples of PyQt.
10##
11## You may use this file under the terms of the BSD license as follows:
12##
13## "Redistribution and use in source and binary forms, with or without
14## modification, are permitted provided that the following conditions are
15## met:
16##   * Redistributions of source code must retain the above copyright
17##     notice, this list of conditions and the following disclaimer.
18##   * Redistributions in binary form must reproduce the above copyright
19##     notice, this list of conditions and the following disclaimer in
20##     the documentation and/or other materials provided with the
21##     distribution.
22##   * Neither the name of Riverbank Computing Limited nor the names of
23##     its contributors may be used to endorse or promote products
24##     derived from this software without specific prior written
25##     permission.
26##
27## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
30## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
31## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
32## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
33## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
34## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
35## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
36## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
37## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
38##
39#############################################################################
40
41
42import sys
43import os
44
45from PyQt5.QtCore import QLibraryInfo, QProcess, QProcessEnvironment
46from PyQt5.QtWidgets import QApplication, QMessageBox
47
48
49app = QApplication(sys.argv)
50
51QMessageBox.information(None, "PyQt Designer Plugins",
52        "<p>This example will start Qt Designer when you click the <b>OK</b> "
53        "button.</p>"
54        "<p>Before doing so it sets the <tt>PYQTDESIGNERPATH</tt> environment "
55        "variable to the <tt>python</tt> directory that is part of this "
56        "example.  This directory contains all the example Python plugin "
57        "modules.</p>"
58        "<p>It also sets the <tt>PYTHONPATH</tt> environment variable to the "
59        "<tt>widgets</tt> directory that is also part of this example.  This "
60        "directory contains the Python modules that implement the example "
61        "custom widgets.</p>"
62        "<p>All of the example custom widgets should then appear in "
63        "Designer's widget box in the <b>PyQt Examples</b> group.</p>")
64
65# Tell Qt Designer where it can find the directory containing the plugins and
66# Python where it can find the widgets.
67base = os.path.dirname(__file__)
68env = QProcessEnvironment.systemEnvironment()
69env.insert('PYQTDESIGNERPATH', os.path.join(base, 'python'))
70env.insert('PYTHONPATH', os.path.join(base, 'widgets'))
71
72# Start Designer.
73designer = QProcess()
74designer.setProcessEnvironment(env)
75
76designer_bin = QLibraryInfo.location(QLibraryInfo.BinariesPath)
77
78if sys.platform == 'darwin':
79    designer_bin += '/Designer.app/Contents/MacOS/Designer'
80else:
81    designer_bin += '/designer'
82
83designer.start(designer_bin)
84designer.waitForFinished(-1)
85
86sys.exit(designer.exitCode())
87