Added logic for language translation

Signed-off-by: Michele Calgaro <[email protected]>

5 files changed, 134 insertions, 127 deletions

diff --git a/config.h.cmake b/config.h.cmake
index 1ee445a..0d0af75 100644
--- a/config.h.cmake
+++ b/config.h.cmake
@@ -18,3 +18,6 @@
 
 // strstream support
 #cmakedefine HAVE_STRSTREAM
+
+// Need to undefine this to let TQt3's translator work properly
+#undef TQT_NO_TRANSLATION
diff --git a/src/MainWindow.cpp b/src/MainWindow.cpp
index 496636d..06bc2d9 100644
--- a/src/MainWindow.cpp
+++ b/src/MainWindow.cpp
@@ -32,11 +32,14 @@
 ///-- #include "UiGuiHighlighter.h"
 ///-- #include "IndentHandler.h"
 
-#include <tqpixmap.h>
 #include <tqaction.h>
+#include <tqapplication.h>
 #include <tqcheckbox.h>
+#include <tqlocale.h>
+#include <tqpixmap.h>
 #include <tqpopupmenu.h>
 #include <tqpushbutton.h>
+#include <tqtranslator.h>
 ///-- #include <tqwidget.h>
 ///-- #include <tqlabel.h>
 ///-- #include <tqstring.h>
@@ -50,8 +53,6 @@
 ///-- #include <tqcloseevent.h>
 ///-- #include <tqhelpevent.h>
 ///-- #include <tqtooltip.h>
-///-- #include <tqtranslator.h>
-///-- #include <tqlocale.h>
 ///-- #include <tqtextcodec.h>
 ///-- #include <tqdate.h>
 ///-- #include <tqurl.h>
@@ -65,6 +66,7 @@
 
 // \defgroup grp_MainWindow All concerning main window functionality.
 
+
 /*
     \class MainWindow
     \ingroup grp_MainWindow
@@ -79,24 +81,25 @@
     \brief Constructs the main window.
  */
 MainWindow::MainWindow(TQString file2OpenOnStart, TQWidget *parent) :
-        MainWindowBase(parent), m_aboutDialog(NULL), m_qSciSourceCodeEditor(NULL)
-///- 		_mainWindowForm(NULL), _settings(NULL),
-///- 		_highlighter(NULL), _textEditVScrollBar(NULL), _aboutDialogGraphicsView(
-///- 			NULL), _settingsDialog(NULL), _encodingActionGroup(NULL), _saveEncodedActionGroup(NULL),
-///- 		_highlighterActionGroup(NULL), _uiGuiTranslator(NULL), _qTTranslator(NULL), _toolBarWidget(
-///- 			NULL), _indentHandler(NULL), _textEditLineColumnInfoLabel(NULL)
+        MainWindowBase(parent), m_aboutDialog(nullptr), m_qSciSourceCodeEditor(nullptr),
+				m_qTranslator(nullptr), m_uiGuiTranslator(nullptr)
+///- 		_mainWindowForm(nullptr), _settings(nullptr), _saveEncodedActionGroup(nullptr),
+///- 		_highlighter(nullptr), _textEditVScrollBar(nullptr), _aboutDialogGraphicsView(
+///- 			nullptr), _settingsDialog(nullptr), _encodingActionGroup(nullptr)
+///- 		_highlighterActionGroup(nullptr), _toolBarWidget(
+///- 			nullptr), _indentHandler(nullptr), _textEditLineColumnInfoLabel(nullptr)
 {
 	// Init of some variables.
 	m_sourceCodeChanged     = false;
 
 	// Create the _settings object, which loads all UiGui settings from a file.
 	m_settings = UiGuiSettings::getInstance();
-///--
-///--	// Initialize the language of the application.
-///--	initApplicationLanguage();
+
+	// Initialize the language of the application.
+	initApplicationLanguage();
 
   // Creates the main window and initializes it.
- 	initMainWindow();
+	initMainWindow();
 
   // Create toolbar and insert it into the main window.
   initToolBar();
@@ -224,7 +227,6 @@ void MainWindow::initMainWindow()
 	connect(m_settings, SIGNAL(whiteSpaceIsVisible(bool)),
 	        actionWhiteSpaceIsVisible, SLOT(setOn(bool)));
 	actionWhiteSpaceIsVisible->setOn(m_settings->getValueByName("WhiteSpaceIsVisible").toBool());
-
 	// Tell the TQScintilla editor if it has to show white space.
 	connect(m_settings, SIGNAL(whiteSpaceIsVisible(bool)), this, SLOT(setWhiteSpaceVisibility(bool)));
 
@@ -356,76 +358,75 @@ void MainWindow::initToolBar()
 ///-- 	_settings->registerObjectProperty(actionEnableSyntaxHighlighting, "checked",
 ///-- 	        "SyntaxHighlightingEnabled");
 ///-- }
-///-- 
-///-- /*
-///--     \brief Initializes the language of UniversalIndentGUI.
-///-- 
-///--     If the program language is defined in the _settings, the corresponding language
-///--     file will be loaded and set for the application. If not set there, the system
-///--     default language will be set, if a translation file for that language exists.
-///--     Returns true, if the translation file could be loaded. Otherwise it returns
-///--     false and uses the default language, which is English.
-///--  */
-///-- bool MainWindow::initApplicationLanguage()
-///-- {
-///-- 	TQString languageShort;
-///-- 
-///-- 	// Get the language _settings from the _settings object.
-///-- 	int languageIndex = _settings->getValueByName("language").toInt();
-///-- 
-///-- 	// If no language was set, indicated by a negative index, use the system language.
-///-- 	if (languageIndex < 0)
-///-- 	{
-///-- 		languageShort = TQLocale::system().name();
-///-- 
-///-- 		// Chinese and Japanese language consist of country and language code.
-///-- 		// For all others the language code will be cut off.
-///-- 		if (languageShort.left(2) != "zh" && languageShort.left(2) != "ja")
-///-- 		{
-///-- 			languageShort = languageShort.left(2);
-///-- 		}
-///-- 
-///-- 		// If no translation file for the systems local language exist, fall back to English.
-///-- 		if (_settings->getAvailableTranslations().indexOf(languageShort) < 0)
-///-- 		{
-///-- 			languageShort = "en";
-///-- 		}
-///-- 
-///-- 		// Set the language setting to the new language.
-///-- 		_settings->setValueByName("language",
-///-- 		        _settings->getAvailableTranslations().indexOf(languageShort));
-///-- 	}
-///-- 	// If a language was defined in the _settings, get this language mnemonic.
-///-- 	else
-///-- 	{
-///-- 		languageShort = _settings->getAvailableTranslations().at(languageIndex);
-///-- 	}
-///-- 
-///-- 	// Load the TQt own translation file and set it for the application.
-///-- 	_qTTranslator = new TQTranslator();
-///-- 	bool translationFileLoaded;
-///-- 	translationFileLoaded = _qTTranslator->load(
-///-- 		SettingsPaths::getGlobalFilesPath() + "/translations/qt_" + languageShort);
-///-- 	if (translationFileLoaded)
-///-- 	{
-///-- 		tqApp->installTranslator(_qTTranslator);
-///-- 	}
-///-- 
-///-- 	// Load the uigui translation file and set it for the application.
-///-- 	_uiGuiTranslator      = new TQTranslator();
-///-- 	translationFileLoaded = _uiGuiTranslator->load(
-///-- 		SettingsPaths::getGlobalFilesPath() + "/translations/universalindent_" + languageShort);
-///-- 	if (translationFileLoaded)
-///-- 	{
-///-- 		tqApp->installTranslator(_uiGuiTranslator);
-///-- 	}
-///-- 
-///-- 	//connect( _settings, SIGNAL(language(int)), this, SLOT(languageChanged(int)) );
-///-- 	_settings->registerObjectSlot(this, "languageChanged(int)", "language");
-///-- 
-///-- 	return translationFileLoaded;
-///-- }
-///-- 
+
+/*
+    \brief Initializes the language of UniversalIndentGUI.
+
+    If the program language is defined in the _settings, the corresponding language
+    file will be loaded and set for the application. If not set there, the system
+    default language will be set, if a translation file for that language exists.
+    Returns true, if the translation file could be loaded. Otherwise it returns
+    false and uses the default language, which is English.
+ */
+bool MainWindow::initApplicationLanguage()
+{
+	TQString languageShort;
+
+	// Get the language settings from the settings object.
+	int languageIndex = m_settings->getValueByName("Language").toInt();
+
+	// If no language was set, indicated by a negative index, use the system language.
+	if (languageIndex < 0)
+	{
+		languageShort = TQLocale::system().name();
+
+		// Chinese and Japanese language consist of country and language code.
+		// For all others the language code will be cut off.
+		if (languageShort.left(2) != "zh" && languageShort.left(2) != "ja")
+		{
+			languageShort = languageShort.left(2);
+		}
+
+		// If no translation file for the systems local language exist, fall back to English.
+		if (m_settings->getAvailableTranslations().findIndex(languageShort) < 0)
+		{
+			languageShort = "en";
+		}
+
+		// Set the language setting to the new language.
+		m_settings->setValueByName("Language",
+		        m_settings->getAvailableTranslations().findIndex(languageShort));
+	}
+	// If a language was defined in the m_settings, get this language mnemonic.
+	else
+	{
+		languageShort = m_settings->getAvailableTranslations()[languageIndex];
+	}
+
+	// Load the TQt own translation file and set it for the application.
+	m_qTranslator = new TQTranslator();
+	bool translationFileLoaded;
+	translationFileLoaded = m_qTranslator->load(SettingsPaths::getGlobalFilesPath() +
+	        "/translations/qt_" + languageShort);
+	if (translationFileLoaded)
+	{
+		tqApp->installTranslator(m_qTranslator);
+	}
+
+	// Load the uigui translation file and set it for the application.
+	m_uiGuiTranslator     = new TQTranslator();
+	translationFileLoaded = m_uiGuiTranslator->load(SettingsPaths::getGlobalFilesPath() +
+	        "/translations/universalindent_" + languageShort);
+	if (translationFileLoaded)
+	{
+		tqApp->installTranslator(m_uiGuiTranslator);
+	}
+
+	connect(m_settings, SIGNAL(language(int)), this, SLOT(languageChanged(int)) );
+
+	return translationFileLoaded;
+}
+
 ///-- /*
 ///--     \brief Creates and initializes the indenter.
 ///--  */
@@ -1166,42 +1167,42 @@ bool MainWindow::maybeSave()
 	return true;
 }
 
-///-- /*
-///--     \brief This slot is called whenever a language is selected in the menu. It tries to find the
-///--     corresponding action in the languageInfoList and sets the language.
-///--  */
-///-- void MainWindow::languageChanged(int languageIndex)
-///-- {
-///-- 	if (languageIndex < _settings->getAvailableTranslations().size())
-///-- 	{
-///-- 		// Get the mnemonic of the new selected language.
-///-- 		TQString languageShort = _settings->getAvailableTranslations().at(languageIndex);
-///-- 
-///-- 		// Remove the old qt translation.
-///-- 		tqApp->removeTranslator(_qTTranslator);
-///-- 
-///-- 		// Remove the old uigui translation.
-///-- 		tqApp->removeTranslator(_uiGuiTranslator);
-///-- 
-///-- 		// Load the TQt own translation file and set it for the application.
-///-- 		bool translationFileLoaded;
-///-- 		translationFileLoaded = _qTTranslator->load(
-///-- 			SettingsPaths::getGlobalFilesPath() + "/translations/qt_" + languageShort);
-///-- 		if (translationFileLoaded)
-///-- 		{
-///-- 			tqApp->installTranslator(_qTTranslator);
-///-- 		}
-///-- 
-///-- 		// Load the uigui translation file and set it for the application.
-///-- 		translationFileLoaded = _uiGuiTranslator->load(
-///-- 			SettingsPaths::getGlobalFilesPath() + "/translations/universalindent_" + languageShort);
-///-- 		if (translationFileLoaded)
-///-- 		{
-///-- 			tqApp->installTranslator(_uiGuiTranslator);
-///-- 		}
-///-- 	}
-///-- }
-///-- 
+/*
+    \brief This slot is called whenever a language is selected in the menu. It tries to find the
+    corresponding action in the languageInfoList and sets the language.
+ */
+void MainWindow::languageChanged(int languageIndex)
+{
+	if (languageIndex >= 0 && languageIndex < m_settings->getAvailableTranslations().size())
+	{
+		// Get the mnemonic of the new selected language.
+		TQString languageShort = m_settings->getAvailableTranslations()[languageIndex];
+
+		// Remove the old qt translation.
+		tqApp->removeTranslator(m_qTranslator);
+
+		// Remove the old uigui translation.
+		tqApp->removeTranslator(m_uiGuiTranslator);
+
+		// Load the TQt own translation file and set it for the application.
+		bool translationFileLoaded;
+		translationFileLoaded = m_qTranslator->load(SettingsPaths::getGlobalFilesPath() +
+		        "/translations/qt_" + languageShort);
+		if (translationFileLoaded)
+		{
+			tqApp->installTranslator(m_qTranslator);
+		}
+
+		// Load the uigui translation file and set it for the application.
+		translationFileLoaded = m_uiGuiTranslator->load(SettingsPaths::getGlobalFilesPath() +
+		        "/translations/universalindent_" + languageShort);
+		if (translationFileLoaded)
+		{
+			tqApp->installTranslator(m_uiGuiTranslator);
+		}
+	}
+}
+
 ///-- /*
 ///--     \brief Creates a menu entries in the file menu for opening and saving a file with different encodings.
 ///-- */
diff --git a/src/MainWindow.h b/src/MainWindow.h
index 8453399..6c4c82a 100644
--- a/src/MainWindow.h
+++ b/src/MainWindow.h
@@ -35,9 +35,8 @@ class ToolBarWidget;
 /// class TQLabel;
 /// class TQScrollBar;
 /// class TQActionGroup;
-/// class TQTranslator;
-/// 
 class TQextScintilla;
+class TQTranslator;
 
 
 class MainWindow : public MainWindowBase
@@ -68,7 +67,7 @@ class MainWindow : public MainWindowBase
 		void previewTurnedOnOff(bool turnOn);
 		void exportToPDF();
 		void exportToHTML();
-///-- 		void languageChanged(int languageIndex);
+		void languageChanged(int languageIndex);
 ///-- 		void encodingChanged(TQAction *encodingAction);
 ///-- 		void numberOfLinesChanged();
 		void updateRecentlyOpenedList();
@@ -86,7 +85,7 @@ class MainWindow : public MainWindowBase
 		bool     maybeSave();
 ///-- 		void     createEncodingMenu();
 ///-- 		void     createHighlighterMenu();
-///-- 		bool     initApplicationLanguage();
+		bool     initApplicationLanguage();
 		void     initMainWindow();
 		void     initToolBar();
 ///-- 		void     initTextEditor();
@@ -118,8 +117,8 @@ class MainWindow : public MainWindowBase
 ///-- 		TQActionGroup *_encodingActionGroup;
 ///-- 		TQActionGroup *_saveEncodedActionGroup;
 ///-- 		TQActionGroup *_highlighterActionGroup;
-///-- 		TQTranslator  *_uiGuiTranslator;
-///-- 		TQTranslator  *_qTTranslator;
+		TQTranslator  *m_uiGuiTranslator;
+		TQTranslator  *m_qTranslator;
 ///-- 
 		bool         m_sourceCodeChanged;
 ///-- 		bool         _indentSettingsChanged;
diff --git a/src/UiGuiSettings.cpp b/src/UiGuiSettings.cpp
index e4ab510..b19de88 100644
--- a/src/UiGuiSettings.cpp
+++ b/src/UiGuiSettings.cpp
@@ -361,6 +361,10 @@ void UiGuiSettings::emitSignalForSetting(TQString settingName)
 	{
 		emit whiteSpaceIsVisible(m_settings[settingName].toBool());
 	}
+	else if (settingName == "Language")
+	{
+		emit language(m_settings[settingName].toInt());
+	}
 }
 
 /*
diff --git a/src/UiGuiSettings.h b/src/UiGuiSettings.h
index 6fd6428..7f316f9 100644
--- a/src/UiGuiSettings.h
+++ b/src/UiGuiSettings.h
@@ -94,7 +94,7 @@ class UiGuiSettings : public TQObject
 		void whiteSpaceIsVisible(bool value);
 // [++]		void indenterParameterTooltipsEnabled(bool value);
 // [++]		void tabWidth(int value);
-// [++]		void language(int value);
+		void language(int value);
 // [++]		void lastUpdateCheck(TQDate value);
 // [++]		void mainWindowState(TQByteArray value);