Added translations (#848)

build.bat

@@ -15,6 +15,14 @@ SET "BUILDDIR=build_%PLATFORM%"
 ECHO Preparing directory
 RMDIR /S /Q %BUILDDIR%
 MKDIR %BUILDDIR%
+
+ECHO Prepare translations
+lrelease.exe ..\src\cutter.pro
+
+RMDIR /S /Q %BUILDDIR%\translations
+MKDIR %BUILDDIR%\translations
+FOR %%i in (src\translations\*.qm) DO MOVE "%%~fi" "%CD%\%BUILDDIR%\translations"
+
 CD %BUILDDIR%
 
 ECHO Building cutter

build.sh

@@ -9,8 +9,12 @@ ERR=0
 #### User variables ####
 BUILD="build"
 QMAKE_CONF=""
+ROOT_DIR=`pwd`
 #QMAKE_CONF="CUTTER_ENABLE_JUPYTER=false CUTTER_ENABLE_QTWEBENGINE=false"
 
+# Create translations
+lrelease ./src/Cutter.pro
+
 # Checking for radare2
 r2 -v >/dev/null 2>&1
 if [ $? = 0 ]; then
@@ -56,6 +60,13 @@ cd "$BUILD" || exit 1
 "$qmakepath" "$QMAKE_CONF" ../src/Cutter.pro
 make -j4
 ERR=$((ERR+$?))
+
+# Move translations
+mkdir "`pwd`/translations"
+find "$ROOT_DIR/src/translations" -maxdepth 1  -type f | grep "cutter_..\.qm" | while read SRC_FILE; do
+    mv $SRC_FILE "`pwd`/translations"
+done
+
 cd ..
 
 # Done

src/Cutter.pro

@@ -11,6 +11,13 @@ VERSION = $${CUTTER_VERSION_MAJOR}.$${CUTTER_VERSION_MINOR}.$${CUTTER_VERSION_PA
 # Required QT version
 lessThan(QT_MAJOR_VERSION, 5): error("requires Qt 5")
 
+TRANSLATIONS += translations/cutter_de.ts \
+                translations/cutter_es.ts \
+                translations/cutter_fr.ts \
+                translations/cutter_it.ts \
+                translations/cutter_nl.ts \
+                translations/cutter_ru.ts
+
 # Icon for OS X
 ICON = img/cutter.icns
 

src/CutterApplication.cpp

@@ -10,6 +10,8 @@
 #include <QProcess>
 #include <QPluginLoader>
 #include <QDir>
+#include <QTranslator>
+#include <QLibraryInfo>
 
 #ifdef CUTTER_ENABLE_JUPYTER
 #include "common/JupyterConnection.h"
@@ -22,6 +24,43 @@
 
 CutterApplication::CutterApplication(int &argc, char **argv) : QApplication(argc, argv)
 {
+    QTranslator *t = new QTranslator;
+    QTranslator *qtBaseTranslator = new QTranslator;
+    QTranslator *qtTranslator = new QTranslator;
+    QString language = Config()->getCurrLocale().bcp47Name();
+    auto allLocales = QLocale::matchingLocales(QLocale::AnyLanguage, QLocale::AnyScript,
+                                               QLocale::AnyCountry);
+
+    QString langPrefix;
+    if (language != "en") {
+        for (auto &it : allLocales) {
+            langPrefix = it.bcp47Name();
+            if (langPrefix == language) {
+                t->load(QString(QCoreApplication::applicationDirPath() + QDir::separator() +
+                                "translations" + QDir::separator() +
+                                "cutter_%1.qm").arg(langPrefix));
+                installTranslator(t);
+                QApplication::setLayoutDirection(it.textDirection());
+                QLocale::setDefault(it);
+
+                QString translationsPath(QLibraryInfo::location(QLibraryInfo::TranslationsPath));
+                if (qtTranslator->load(it, "qt", "_", translationsPath)) {
+                    installTranslator(qtTranslator);
+                } else {
+                    delete qtTranslator;
+                }
+
+                if (qtBaseTranslator->load(it, "qtbase", "_", translationsPath)) {
+                    installTranslator(qtBaseTranslator);
+                } else {
+                    delete qtBaseTranslator;
+                }
+
+                break;
+            }
+        }
+    }
+
     setOrganizationName("Cutter");
     setApplicationName("Cutter");
     setApplicationVersion(CUTTER_VERSION_FULL);

src/common/Configuration.cpp

@@ -109,6 +109,16 @@ void Configuration::resetAll()
     emit fontsUpdated();
 }
 
+QLocale Configuration::getCurrLocale() const
+{
+    return s.value("locale", QLocale().system()).toLocale();
+}
+
+void Configuration::setLocale(const QLocale &l)
+{
+    s.setValue("locale", l);
+}
+
 void Configuration::loadDefaultTheme()
 {
     /* Load Qt Theme */

src/common/Configuration.h

@@ -36,6 +36,10 @@ public:
 
     void resetAll();
 
+    // Languages
+    QLocale getCurrLocale() const;
+    void setLocale(const QLocale &l);
+
     // Fonts
     const QFont getFont() const;
     void setFont(const QFont &font);

src/dialogs/preferences/AppearanceOptionsWidget.cpp

@@ -1,6 +1,7 @@
 #include <QDir>
 #include <QLabel>
 #include <QFontDialog>
+#include <QTranslator>
 #include <QInputDialog>
 
 #include <QComboBox>
@@ -14,6 +15,34 @@
 #include "common/ColorSchemeFileSaver.h"
 #include "widgets/ColorSchemePrefWidget.h"
 
+QStringList findLanguages()
+{
+    QDir dir(QCoreApplication::applicationDirPath() + QDir::separator() +
+             "translations");
+    QStringList fileNames = dir.entryList(QStringList("cutter_*.qm"), QDir::Files,
+                                          QDir::Name);
+
+    QStringList languages;
+    QString currLanguageName;
+    auto allLocales = QLocale::matchingLocales(QLocale::AnyLanguage, QLocale::AnyScript,
+                                               QLocale::AnyCountry);
+
+    for (auto i : fileNames) {
+        QString localeName = i.mid(sizeof("cutter_") - 1, 2);
+        for (auto j : allLocales) {
+            if (j.name().startsWith(localeName)) {
+                currLanguageName = j.nativeLanguageName();
+                currLanguageName = currLanguageName.at(0).toUpper() +
+                                   currLanguageName.right(currLanguageName.length() - 1);
+                languages << currLanguageName;
+                break;
+            }
+        }
+    }
+
+    return languages << "English";
+}
+
 AppearanceOptionsWidget::AppearanceOptionsWidget(PreferencesDialog *dialog, QWidget *parent)
     : QDialog(parent),
       ui(new Ui::AppearanceOptionsWidget)
@@ -24,7 +53,22 @@ AppearanceOptionsWidget::AppearanceOptionsWidget(PreferencesDialog *dialog, QWid
     updateFontFromConfig();
     updateThemeFromConfig();
 
-    connect(Config(), &Configuration::fontsUpdated, this, &AppearanceOptionsWidget::updateFontFromConfig);
+    QStringList langs = findLanguages();
+    ui->languageComboBox->addItems(langs);
+
+    QString curr = Config()->getCurrLocale().nativeLanguageName();
+    curr = curr.at(0).toUpper() + curr.right(curr.length() - 1);
+    if (!langs.contains(curr)) {
+        curr = "English";
+    }
+    ui->languageComboBox->setCurrentText(curr);
+    connect(ui->languageComboBox,
+            static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
+            this,
+            &AppearanceOptionsWidget::onLanguageComboBoxCurrentIndexChanged);
+
+    connect(Config(), &Configuration::fontsUpdated, this,
+            &AppearanceOptionsWidget::updateFontFromConfig);
     connect(ui.get()->colorComboBox, &QComboBox::currentTextChanged, [&](const QString & name) {
         static_cast<ColorSchemePrefWidget *>(ui.get()->colorSchemePrefWidget)->setNewScheme(name);
     });
@@ -114,3 +158,24 @@ void AppearanceOptionsWidget::on_deleteButton_clicked()
 {
     ColorSchemeFileWorker().deleteScheme(Config()->getCurrentTheme());
 }
+
+void AppearanceOptionsWidget::onLanguageComboBoxCurrentIndexChanged(int index)
+{
+    QString language = ui->languageComboBox->itemText(index).toLower();
+    auto allLocales = QLocale::matchingLocales(QLocale::AnyLanguage, QLocale::AnyScript,
+                                               QLocale::AnyCountry);
+
+    for (auto &it : allLocales) {
+        if (it.nativeLanguageName().toLower() == language) {
+            Config()->setLocale(it);
+            break;
+        }
+    }
+
+    QMessageBox mb;
+    mb.setWindowTitle(tr("Language settings"));
+    mb.setText(tr("Language will be changed after next application start."));
+    mb.setIcon(QMessageBox::Information);
+    mb.setStandardButtons(QMessageBox::Ok);
+    mb.exec();
+}

src/dialogs/preferences/AppearanceOptionsWidget.h

@@ -34,6 +34,7 @@ private slots:
     void on_colorComboBox_currentIndexChanged(int index);
     void on_copyButton_clicked();
     void on_deleteButton_clicked();
+    void onLanguageComboBoxCurrentIndexChanged(int index);
 };
 
 

src/dialogs/preferences/AppearanceOptionsWidget.ui

@@ -56,14 +56,14 @@
        </item>
       </layout>
      </item>
-     <item row="1" column="0">
+     <item row="2" column="0">
       <widget class="QLabel" name="themeLabel">
        <property name="text">
         <string>Qt Theme:</string>
        </property>
       </widget>
      </item>
-     <item row="1" column="1">
+     <item row="2" column="1">
       <widget class="QComboBox" name="themeComboBox">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
@@ -83,14 +83,14 @@
        </item>
       </widget>
      </item>
-     <item row="2" column="0">
+     <item row="3" column="0">
       <widget class="QLabel" name="colorLabel">
        <property name="text">
         <string>Color Theme</string>
        </property>
       </widget>
      </item>
-     <item row="2" column="1">
+     <item row="3" column="1">
       <layout class="QHBoxLayout" name="horizontalLayout_3">
        <item>
         <widget class="QComboBox" name="colorComboBox">
@@ -137,6 +137,23 @@
        </item>
       </layout>
      </item>
+     <item row="1" column="0">
+      <widget class="QLabel" name="languageLabel">
+       <property name="text">
+        <string>Language</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="1">
+      <widget class="QComboBox" name="languageComboBox">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Maximum" vsizetype="Fixed">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+      </widget>
+     </item>
     </layout>
    </item>
    <item>