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50
51#include "languagechooser.h"
52#include "mainwindow.h"
53
54#include <QCoreApplication>
55#include <QCheckBox>
56#include <QDialogButtonBox>
57#include <QDir>
58#include <QGridLayout>
59#include <QGroupBox>
60#include <QPushButton>
61#include <QTranslator>
62
63LanguageChooser::LanguageChooser(const QString &defaultLang, QWidget *parent)
64 : QDialog(parent, Qt::WindowStaysOnTopHint)
65{
66 groupBox = new QGroupBox("Languages");
67
68 QGridLayout *groupBoxLayout = new QGridLayout;
69
70 const QStringList qmFiles = findQmFiles();
71 for (int i = 0; i < qmFiles.size(); ++i) {
72 const QString &qmlFile = qmFiles.at(i);
73 QCheckBox *checkBox = new QCheckBox(languageName(qmlFile));
74 qmFileForCheckBoxMap.insert(checkBox, qmlFile);
75 connect(checkBox, &QCheckBox::toggled,
76 this, &LanguageChooser::checkBoxToggled);
77 if (languageMatch(defaultLang, qmlFile))
78 checkBox->setCheckState(Qt::Checked);
79 groupBoxLayout->addWidget(checkBox, i / 2, i % 2);
80 }
81 groupBox->setLayout(groupBoxLayout);
82
83 buttonBox = new QDialogButtonBox;
84 showAllButton = buttonBox->addButton("Show All",
85 QDialogButtonBox::ActionRole);
86 hideAllButton = buttonBox->addButton("Hide All",
87 QDialogButtonBox::ActionRole);
88
89 connect(showAllButton, &QAbstractButton::clicked, this, &LanguageChooser::showAll);
90 connect(hideAllButton, &QAbstractButton::clicked, this, &LanguageChooser::hideAll);
91
92 QVBoxLayout *mainLayout = new QVBoxLayout;
93 mainLayout->addWidget(groupBox);
94 mainLayout->addWidget(buttonBox);
95 setLayout(mainLayout);
96
97 setWindowTitle("I18N");
98}
99
100bool LanguageChooser::languageMatch(QStringView lang, QStringView qmFile)
101{
102 //qmFile: i18n_xx.qm
103 const QStringView prefix{ u"i18n_" };
104 const int langTokenLength = 2; /*FIXME: is checking two chars enough?*/
105 return qmFile.mid(qmFile.indexOf(prefix) + prefix.length(), langTokenLength) == lang.left(langTokenLength);
106}
107
108bool LanguageChooser::eventFilter(QObject *object, QEvent *event)
109{
110 if (event->type() == QEvent::Close) {
111 MainWindow *window = qobject_cast<MainWindow *>(object);
112 if (window) {
113 QCheckBox *checkBox = mainWindowForCheckBoxMap.key(window);
114 if (checkBox)
115 checkBox->setChecked(false);
116 }
117 }
118 return QDialog::eventFilter(object, event);
119}
120
121void LanguageChooser::closeEvent(QCloseEvent * /* event */)
122{
123 QCoreApplication::quit();
124}
125
126void LanguageChooser::checkBoxToggled()
127{
128 QCheckBox *checkBox = qobject_cast<QCheckBox *>(sender());
129 MainWindow *window = mainWindowForCheckBoxMap.value(checkBox);
130 if (!window) {
131 QTranslator translator;
132 translator.load(qmFileForCheckBoxMap.value(checkBox));
133 qApp->installTranslator(&translator);
134
135 window = new MainWindow;
136 window->setPalette(colorForLanguage(checkBox->text()));
137
138 window->installEventFilter(this);
139 mainWindowForCheckBoxMap.insert(checkBox, window);
140 }
141 window->setVisible(checkBox->isChecked());
142}
143
144void LanguageChooser::showAll()
145{
146 for (auto it = qmFileForCheckBoxMap.keyBegin(); it != qmFileForCheckBoxMap.keyEnd(); ++it)
147 (*it)->setChecked(true);
148}
149
150void LanguageChooser::hideAll()
151{
152 for (auto it = qmFileForCheckBoxMap.keyBegin(); it != qmFileForCheckBoxMap.keyEnd(); ++it)
153 (*it)->setChecked(false);
154}
155
156QStringList LanguageChooser::findQmFiles()
157{
158 QDir dir(":/translations");
159 QStringList fileNames = dir.entryList(QStringList("*.qm"), QDir::Files,
160 QDir::Name);
161 for (QString &fileName : fileNames)
162 fileName = dir.filePath(fileName);
163 return fileNames;
164}
165
166QString LanguageChooser::languageName(const QString &qmFile)
167{
168 QTranslator translator;
169 translator.load(qmFile);
170
171 return translator.translate("MainWindow", "English");
172}
173
174QColor LanguageChooser::colorForLanguage(const QString &language)
175{
176 size_t hashValue = qHash(language);
177 int red = 156 + (hashValue & 0x3F);
178 int green = 156 + ((hashValue >> 6) & 0x3F);
179 int blue = 156 + ((hashValue >> 12) & 0x3F);
180 return QColor(red, green, blue);
181}
182