Qt: Add language selector

CHANGES

@@ -150,6 +150,8 @@ Misc:
 Bugfixes:
  - Qt: Fix memory search close button (fixes mgba.io/i/769)
  - Qt: Fix window icon being stretched
+Misc:
+ - Qt: Add language selector
 
 0.6 beta 1: (2017-06-29)
  - Initial beta for 0.6

src/platform/qt/GBAApp.cpp

@@ -14,6 +14,7 @@
 #include <QFileInfo>
 #include <QFileOpenEvent>
 #include <QIcon>
+#include <QLibraryInfo>
 #include <QTranslator>
 
 #include <mgba/core/version.h>
@@ -44,11 +45,19 @@ GBAApp::GBAApp(int& argc, char* argv[])
 	setWindowIcon(QIcon(":/res/mgba-512.png"));
 #endif
 
-	QTranslator* translator = new QTranslator(this);
-	if (translator->load(QLocale(), QLatin1String(binaryName), QLatin1String("-"), QLatin1String(":/translations"))) {
-		installTranslator(translator);
+	QLocale locale;
+
+	if (!m_configController.getQtOption("language").isNull()) {
+		locale = QLocale(m_configController.getQtOption("language").toString());
 	}
 
+	QTranslator qtTranslator;
+	qtTranslator.load(locale, "qt", "_", QLibraryInfo::location(QLibraryInfo::TranslationsPath));
+	installTranslator(&qtTranslator);
+
+	QTranslator langTranslator;
+	langTranslator.load(locale, binaryName, "-", ":/translations/");
+	installTranslator(&langTranslator);
 
 	SocketSubsystemInit();
 	qRegisterMetaType<const uint32_t*>("const uint32_t*");

src/platform/qt/SettingsView.cpp

@@ -14,6 +14,7 @@
 #include "ShortcutView.h"
 
 #include <mgba/core/serialize.h>
+#include <mgba/core/version.h>
 #include <mgba/internal/gba/gba.h>
 
 using namespace QGBA;
@@ -164,6 +165,19 @@ SettingsView::SettingsView(ConfigController* controller, InputController* inputC
 		}
 	});
 
+	m_ui.languages->setItemData(0, QLocale("en"));
+	QDir ts(":/translations/");
+	for (auto name : ts.entryList()) {
+		if (!name.endsWith(".qm")) {
+			continue;
+		}
+		QLocale locale(name.remove(QString("%0-").arg(binaryName)).remove(".qm"));
+		m_ui.languages->addItem(locale.nativeLanguageName(), locale);
+		if (locale == QLocale()) {
+			m_ui.languages->setCurrentIndex(m_ui.languages->count() - 1);
+		}
+	}
+
 	ShortcutView* shortcutView = new ShortcutView();
 	shortcutView->setController(shortcutController);
 	shortcutView->setInputController(inputController);
@@ -253,6 +267,12 @@ void SettingsView::updateConfig() {
 		emit displayDriverChanged();
 	}
 
+	QLocale language = m_ui.languages->itemData(m_ui.languages->currentIndex()).toLocale();
+	if (language != m_controller->getQtOption("language").toLocale() && !(language.bcp47Name() == QLocale::system().bcp47Name() && m_controller->getQtOption("language").isNull())) {
+		m_controller->setQtOption("language", language.bcp47Name());
+		emit languageChanged();
+	}
+
 	m_controller->write();
 
 	emit pathsChanged();

src/platform/qt/SettingsView.h

@@ -29,6 +29,7 @@ signals:
 	void audioDriverChanged();
 	void displayDriverChanged();
 	void pathsChanged();
+	void languageChanged();
 	void libraryCleared();
 
 private slots:

src/platform/qt/SettingsView.ui

@@ -398,17 +398,30 @@
      </widget>
      <widget class="QWidget" name="interface_2">
       <layout class="QFormLayout" name="formLayout_4">
-       <item row="1" column="1">
-        <widget class="QCheckBox" name="showLibrary">
+       <item row="0" column="0">
+        <widget class="QLabel" name="label_26">
          <property name="text">
-          <string>Show when no game open</string>
-         </property>
-         <property name="checked">
-          <bool>true</bool>
+          <string>Language</string>
          </property>
         </widget>
        </item>
        <item row="0" column="1">
+        <widget class="QComboBox" name="languages">
+         <item>
+          <property name="text">
+           <string>English</string>
+          </property>
+         </item>
+        </widget>
+       </item>
+       <item row="2" column="0">
+        <widget class="QLabel" name="label_6">
+         <property name="text">
+          <string>Library:</string>
+         </property>
+        </widget>
+       </item>
+       <item row="2" column="1">
         <widget class="QComboBox" name="libraryStyle">
          <item>
           <property name="text">
@@ -422,35 +435,38 @@
          </item>
         </widget>
        </item>
-       <item row="0" column="0">
-        <widget class="QLabel" name="label_6">
+       <item row="3" column="1">
+        <widget class="QCheckBox" name="showLibrary">
          <property name="text">
-          <string>Library:</string>
+          <string>Show when no game open</string>
+         </property>
+         <property name="checked">
+          <bool>true</bool>
          </property>
         </widget>
        </item>
-       <item row="2" column="1">
+       <item row="4" column="1">
         <widget class="QPushButton" name="clearCache">
          <property name="text">
           <string>Clear cache</string>
          </property>
         </widget>
        </item>
-       <item row="3" column="0" colspan="2">
+       <item row="5" column="0" colspan="2">
         <widget class="Line" name="line_8">
          <property name="orientation">
           <enum>Qt::Horizontal</enum>
          </property>
         </widget>
        </item>
-       <item row="4" column="1">
+       <item row="6" column="1">
         <widget class="QCheckBox" name="allowOpposingDirections">
          <property name="text">
           <string>Allow opposing input directions</string>
          </property>
         </widget>
        </item>
-       <item row="5" column="1">
+       <item row="7" column="1">
         <widget class="QCheckBox" name="suspendScreensaver">
          <property name="text">
           <string>Suspend screensaver</string>
@@ -460,13 +476,20 @@
          </property>
         </widget>
        </item>
-       <item row="6" column="1">
+       <item row="8" column="1">
         <widget class="QCheckBox" name="pauseOnFocusLost">
          <property name="text">
           <string>Pause when inactive</string>
          </property>
         </widget>
        </item>
+       <item row="1" column="0" colspan="2">
+        <widget class="Line" name="line_10">
+         <property name="orientation">
+          <enum>Qt::Horizontal</enum>
+         </property>
+        </widget>
+       </item>
       </layout>
      </widget>
      <widget class="QWidget" name="emulation">

src/platform/qt/Window.cpp

@@ -459,6 +459,7 @@ void Window::openSettingsWindow() {
 	connect(settingsWindow, &SettingsView::biosLoaded, m_controller, &GameController::loadBIOS);
 	connect(settingsWindow, &SettingsView::audioDriverChanged, m_controller, &GameController::reloadAudioDriver);
 	connect(settingsWindow, &SettingsView::displayDriverChanged, this, &Window::mustRestart);
+	connect(settingsWindow, &SettingsView::languageChanged, this, &Window::mustRestart);
 	connect(settingsWindow, &SettingsView::pathsChanged, this, &Window::reloadConfig);
 	connect(settingsWindow, &SettingsView::libraryCleared, m_libraryView, &LibraryController::clear);
 	openView(settingsWindow);

src/platform/qt/main.cpp

@@ -10,9 +10,6 @@
 #include "GBAApp.h"
 #include "Window.h"
 
-#include <QLibraryInfo>
-#include <QTranslator>
-
 #include <mgba/core/version.h>
 
 #ifdef QT_STATIC
@@ -31,15 +28,5 @@ int main(int argc, char* argv[]) {
 #endif
 	QGBA::GBAApp application(argc, argv);
 
-	QLocale locale = QLocale::system();
-
-	QTranslator qtTranslator;
-	qtTranslator.load(locale, "qt", "_", QLibraryInfo::location(QLibraryInfo::TranslationsPath));
-	application.installTranslator(&qtTranslator);
-
-	QTranslator langTranslator;
-	langTranslator.load(locale, binaryName, "-", ":/translations/");
-	application.installTranslator(&langTranslator);
-
 	return application.exec();
 }