1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
#!/usr/bin/env python
#############################################################################
##
## Copyright (C) 2013 Riverbank Computing Limited.
## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
##
## This file is part of the examples of PyQt.
##
## $QT_BEGIN_LICENSE:BSD$
## 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 Nokia Corporation and its Subsidiary(-ies) 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 PyQt5.QtCore import QDir, QEvent, Qt, QT_TRANSLATE_NOOP, QTranslator
from PyQt5.QtGui import QColor, QPalette
from PyQt5.QtWidgets import (QAction, QApplication, QCheckBox, QDialog,
QDialogButtonBox, QGridLayout, QGroupBox, QListWidget, QMainWindow,
QRadioButton, QVBoxLayout, QWidget)
import i18n_rc
class LanguageChooser(QDialog):
def __init__(self, parent=None):
super(LanguageChooser, self).__init__(parent, Qt.WindowStaysOnTopHint)
self.qmFileForCheckBoxMap = {}
self.mainWindowForCheckBoxMap = {}
groupBox = QGroupBox("Languages")
groupBoxLayout = QGridLayout()
qmFiles = self.findQmFiles()
for i, qmf in enumerate(qmFiles):
checkBox = QCheckBox(self.languageName(qmf))
self.qmFileForCheckBoxMap[checkBox] = qmf
checkBox.toggled.connect(self.checkBoxToggled)
groupBoxLayout.addWidget(checkBox, i / 2, i % 2)
groupBox.setLayout(groupBoxLayout)
buttonBox = QDialogButtonBox()
showAllButton = buttonBox.addButton("Show All",
QDialogButtonBox.ActionRole)
hideAllButton = buttonBox.addButton("Hide All",
QDialogButtonBox.ActionRole)
showAllButton.clicked.connect(self.showAll)
hideAllButton.clicked.connect(self.hideAll)
mainLayout = QVBoxLayout()
mainLayout.addWidget(groupBox)
mainLayout.addWidget(buttonBox)
self.setLayout(mainLayout)
self.setWindowTitle("I18N")
def eventFilter(self, object, event):
if event.type() == QEvent.Close:
if isinstance(object, MainWindow):
window = object
for checkBox, w in self.mainWindowForCheckBoxMap.items():
if w is window:
break
else:
checkBox = None
if checkBox:
checkBox.setChecked(False)
return QWidget.eventFilter(self, object, event)
def closeEvent(self, event):
QApplication.instance().quit()
def checkBoxToggled(self):
checkBox = self.sender()
window = self.mainWindowForCheckBoxMap.get(checkBox)
if not window:
translator = QTranslator()
translator.load(self.qmFileForCheckBoxMap[checkBox])
QApplication.installTranslator(translator)
# Because we will be installing an event filter for the main window
# it is important that this instance isn't garbage collected before
# the main window when the program terminates. We ensure this by
# making the main window a child of this one.
window = MainWindow(self)
window.setPalette(QPalette(self.colorForLanguage(checkBox.text())))
window.installEventFilter(self)
self.mainWindowForCheckBoxMap[checkBox] = window
window.setVisible(checkBox.isChecked())
def showAll(self):
for checkBox in self.qmFileForCheckBoxMap.keys():
checkBox.setChecked(True)
def hideAll(self):
for checkBox in self.qmFileForCheckBoxMap.keys():
checkBox.setChecked(False)
def findQmFiles(self):
trans_dir = QDir(':/translations')
fileNames = trans_dir.entryList(['*.qm'], QDir.Files, QDir.Name)
return [trans_dir.filePath(fn) for fn in fileNames]
def languageName(self, qmFile):
translator = QTranslator()
translator.load(qmFile)
return translator.translate("MainWindow", "English")
def colorForLanguage(self, language):
hashValue = hash(language)
red = 156 + (hashValue & 0x3F)
green = 156 + ((hashValue >> 6) & 0x3F)
blue = 156 + ((hashValue >> 12) & 0x3F)
return QColor(red, green, blue)
class MainWindow(QMainWindow):
listEntries = [QT_TRANSLATE_NOOP("MainWindow", "First"),
QT_TRANSLATE_NOOP("MainWindow", "Second"),
QT_TRANSLATE_NOOP("MainWindow", "Third")]
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.centralWidget = QWidget()
self.setCentralWidget(self.centralWidget)
self.createGroupBox()
listWidget = QListWidget()
for le in MainWindow.listEntries:
listWidget.addItem(self.tr(le))
mainLayout = QVBoxLayout()
mainLayout.addWidget(self.groupBox)
mainLayout.addWidget(listWidget)
self.centralWidget.setLayout(mainLayout)
exitAction = QAction(self.tr("E&xit"), self,
triggered=QApplication.instance().quit)
fileMenu = self.menuBar().addMenu(self.tr("&File"))
fileMenu.setPalette(QPalette(Qt.red))
fileMenu.addAction(exitAction)
self.setWindowTitle(self.tr("Language: %s") % self.tr("English"))
self.statusBar().showMessage(self.tr("Internationalization Example"))
if self.tr("LTR") == "RTL":
self.setLayoutDirection(Qt.RightToLeft)
def createGroupBox(self):
self.groupBox = QGroupBox(self.tr("View"))
perspectiveRadioButton = QRadioButton(self.tr("Perspective"))
isometricRadioButton = QRadioButton(self.tr("Isometric"))
obliqueRadioButton = QRadioButton(self.tr("Oblique"))
perspectiveRadioButton.setChecked(True)
self.groupBoxLayout = QVBoxLayout()
self.groupBoxLayout.addWidget(perspectiveRadioButton)
self.groupBoxLayout.addWidget(isometricRadioButton)
self.groupBoxLayout.addWidget(obliqueRadioButton)
self.groupBox.setLayout(self.groupBoxLayout)
if __name__ == "__main__":
import sys
app = QApplication(sys.argv)
chooser = LanguageChooser()
chooser.show()
sys.exit(app.exec_())
|
