Changeset 29 in tspsg-svn for trunk/src/mainwindow.cpp

Timestamp:

Jun 24, 2009, 6:54:10 PM (15 years ago)

Author:

laleppa

Message:

+ Selected application language is now saved and restored.
+ Added language selection entries to main menu.
+ On-the-fly language switching.
+ Loading corresponding Qt library language, if exists.

• File/New? sets all table cells to zeros.
• Translation updates to reflect recent changes.
• Renamed language files from language names to language codes.
• Renamed some slot to have unified signal/slot naming.
• Printer settings are now persistant until application close.

File:

• trunk/src/mainwindow.cpp (modified) (7 diffs)

trunk/src/mainwindow.cpp

@@ -31 +31 @@
         : QMainWindow(parent)
 {
+        settings = new QSettings(QSettings::IniFormat,QSettings::UserScope,"TSPSG","tspsg");
+        loadLanguage();
         setupUi(this);
-        settings = new QSettings(QSettings::IniFormat,QSettings::UserScope,"TSPSG","tspsg");
+#ifndef Q_OS_WINCE
+        printer = new QPrinter();
+#endif // Q_OS_WINCE
+        groupSettingsLanguageList = new QActionGroup(this);
+        loadLangList();
         spinCities->setValue(settings->value("NumCities",5).toInt());
-        connect(actionSettingsSettings,SIGNAL(triggered()),this,SLOT(ChangeSettings()));
-        connect(actionHelpAbout,SIGNAL(triggered()),this,SLOT(showAbout()));
-#ifndef Q_OS_WINCE
-        connect(actionFilePrintSetup,SIGNAL(triggered()),this,SLOT(PrintSetup()));
-#endif // Q_OS_WINCE
-        connect(buttonSolve,SIGNAL(clicked()),this,SLOT(Solve()));
-        connect(buttonRandom,SIGNAL(clicked()),this,SLOT(Random()));
-        connect(spinCities,SIGNAL(valueChanged(int)),this,SLOT(CitiesNumberChanged(int)));
+        actionSettingsLanguageAutodetect->setChecked(settings->value("Language","").toString().isEmpty());
+        connect(actionFileNew,SIGNAL(triggered()),this,SLOT(actionFileNewTriggered()));
+        connect(actionSettingsPreferences,SIGNAL(triggered()),this,SLOT(actionSettingsPreferencesTriggered()));
+        connect(actionSettingsLanguageAutodetect,SIGNAL(triggered(bool)),this,SLOT(actionSettingsLanguageAutodetectTriggered(bool)));
+        connect(groupSettingsLanguageList,SIGNAL(triggered(QAction *)),this,SLOT(groupSettingsLanguageListTriggered(QAction *)));
+        connect(actionHelpAbout,SIGNAL(triggered()),this,SLOT(actionHelpAboutTriggered()));
+#ifndef Q_OS_WINCE
+        connect(actionFilePrintSetup,SIGNAL(triggered()),this,SLOT(actionFilePrintSetupTriggered()));
+#endif // Q_OS_WINCE
+        connect(buttonSolve,SIGNAL(clicked()),this,SLOT(buttonSolveClicked()));
+        connect(buttonRandom,SIGNAL(clicked()),this,SLOT(buttonRandomClicked()));
+        connect(spinCities,SIGNAL(valueChanged(int)),this,SLOT(spinCitiesValueChanged(int)));
 QRect rect = geometry();
 #ifdef Q_OS_WINCE
@@ -73 +83 @@
 }
 
-void MainWindow::CitiesNumberChanged(int n)
+bool MainWindow::loadLanguage()
+{
+// i18n
+bool ad = settings->value("Language","").toString().isEmpty();
+QString lang = settings->value("Language",QLocale::system().name()).toString();
+static QTranslator *qtTranslator;
+        if (qtTranslator) {
+                qApp->removeTranslator(qtTranslator);
+                delete qtTranslator;
+                qtTranslator = NULL;
+        }
+        qtTranslator = new QTranslator();
+        if (lang.compare("en") && !lang.startsWith("en_")) {
+                // Trying to load system Qt library translation...
+                if (qtTranslator->load("qt_" + lang,QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
+                        qApp->installTranslator(qtTranslator);
+                else
+                        // No luck. Let's try to load bundled one.
+                        if (qtTranslator->load("qt_" + lang,"i18n"))
+                                qApp->installTranslator(qtTranslator);
+                        else {
+                                delete qtTranslator;
+                                qtTranslator = NULL;
+                        }
+        }
+        // Now let's load application translation.
+static QTranslator *translator;
+        if (translator) {
+                qApp->removeTranslator(translator);
+                delete translator;
+        }
+        translator = new QTranslator();
+        if (lang.compare("en") && !lang.startsWith("en_")) {
+                if (translator->load(lang,"i18n"))
+                        qApp->installTranslator(translator);
+                else {
+                        if (!ad)
+                                QMessageBox(QMessageBox::Warning,trUtf8("Language change"),trUtf8("Unable to load translation language."),QMessageBox::Ok,this).exec();
+                        delete translator;
+                        translator = NULL;
+                        return false;
+                }
+        }
+        return true;
+}
+
+void MainWindow::spinCitiesValueChanged(int n)
 {
 #ifdef Q_OS_WINCE
@@ -88 +144 @@
 }
 
-void MainWindow::ChangeSettings()
+
+void MainWindow::actionFileNewTriggered()
+{
+        tspmodel->clear();
+}
+
+void MainWindow::actionSettingsPreferencesTriggered()
 {
 SettingsDialog sd(this);
@@ -95 +157 @@
 
 #ifndef Q_OS_WINCE
-void MainWindow::PrintSetup()
-{
-QPrintDialog pd;
+void MainWindow::actionFilePrintSetupTriggered()
+{
+QPrintDialog pd(printer,this);
+        pd.setOption(QAbstractPrintDialog::PrintSelection,false);
+        pd.setOption(QAbstractPrintDialog::PrintPageRange,false);
         pd.exec();
 }
 #endif // Q_OS_WINCE
 
-void MainWindow::Random()
+void MainWindow::buttonRandomClicked()
 {
         tspmodel->randomize();
@@ -111 +175 @@
 }
 
-void MainWindow::Solve()
+void MainWindow::buttonSolveClicked()
 {
         // TODO: Task solving goes here :-)
@@ -136 +200 @@
 }
 
-void MainWindow::showAbout()
+void MainWindow::actionHelpAboutTriggered()
 {
         // TODO: Normal about window :-)
@@ -149 +213 @@
 }
 
+void MainWindow::loadLangList()
+{
+QSettings langinfo("i18n/languages.ini",QSettings::IniFormat);
+        langinfo.setIniCodec("UTF-8");
+QDir dir("i18n","*.qm",QDir::Name | QDir::IgnoreCase,QDir::Files);
+        if (!dir.exists())
+                return;
+QFileInfoList langs = dir.entryInfoList();
+        if (langs.size() <= 0)
+                return;
+        menuSettingsLanguage->addSeparator();
+QAction *a;
+        for (int k = 0; k < langs.size(); k++) {
+                QFileInfo lang = langs.at(k);
+                if (!lang.completeBaseName().startsWith("qt_")) {
+                        a = menuSettingsLanguage->addAction(langinfo.value(lang.completeBaseName() + "/NativeName",lang.completeBaseName()).toString());
+                        a->setData(lang.completeBaseName());
+                        a->setCheckable(true);
+                        a->setActionGroup(groupSettingsLanguageList);
+                        if (settings->value("Language",QLocale::system().name()).toString().startsWith(lang.completeBaseName()))
+                                a->setChecked(true);
+                }
+        }
+}
+
+void MainWindow::actionSettingsLanguageAutodetectTriggered(bool checked)
+{
+        if (checked) {
+                settings->remove("Language");
+                QMessageBox(QMessageBox::Information,trUtf8("Language change"),trUtf8("Language will be autodetected on next application start."),QMessageBox::Ok,this).exec();
+        } else
+                settings->setValue("Language",groupSettingsLanguageList->checkedAction()->data().toString());
+}
+
+void MainWindow::groupSettingsLanguageListTriggered(QAction *action)
+{
+        if (actionSettingsLanguageAutodetect->isChecked()) {
+                // We have language autodetection. It needs to be disabled to change language.
+                if (QMessageBox(QMessageBox::Question,trUtf8("Language change"),trUtf8("You have language autodetection turned on.\nIt needs to be off.\nDo you wish to turn it off?"),QMessageBox::Yes | QMessageBox::No,this).exec() == QMessageBox::Yes) {
+                        actionSettingsLanguageAutodetect->trigger();
+                } else
+                        return;
+        }
+        if (loadLanguage()) {
+                settings->setValue("Language",action->data().toString());
+                retranslateUi(this);
+        } else {
+        }
+}
+
 void MainWindow::closeEvent(QCloseEvent *event)
 {