Merge pull request #2670 from laanwj/2013_05_datadir

qt: allow user to choose data directory

1 files changed, 60 insertions, 40 deletions

diff --git a/src/qt/bitcoin.cpp b/src/qt/bitcoin.cpp
index 76e88b36a7..b0c45d6863 100644
--- a/src/qt/bitcoin.cpp
+++ b/src/qt/bitcoin.cpp
@@ -15,6 +15,7 @@
 #include "ui_interface.h"
 #include "paymentserver.h"
 #include "splashscreen.h"
+#include "intro.h"
 
 #include <QMessageBox>
 #if QT_VERSION < 0x050000
@@ -24,6 +25,7 @@
 #include <QTimer>
 #include <QTranslator>
 #include <QLibraryInfo>
+#include <QSettings>
 
 #if defined(BITCOIN_NEED_QT_PLUGINS) && !defined(_BITCOIN_QT_PLUGINS_INCLUDED)
 #define _BITCOIN_QT_PLUGINS_INCLUDED
@@ -110,6 +112,46 @@ static void handleRunawayException(std::exception *e)
     exit(1);
 }
 
+/** Set up translations */
+static void initTranslations(QTranslator &qtTranslatorBase, QTranslator &qtTranslator, QTranslator &translatorBase, QTranslator &translator)
+{
+    QSettings settings;
+
+    // Get desired locale (e.g. "de_DE")
+    // 1) System default language
+    QString lang_territory = QLocale::system().name();
+    // 2) Language from QSettings
+    QString lang_territory_qsettings = settings.value("language", "").toString();
+    if(!lang_territory_qsettings.isEmpty())
+        lang_territory = lang_territory_qsettings;
+    // 3) -lang command line argument
+    lang_territory = QString::fromStdString(GetArg("-lang", lang_territory.toStdString()));
+
+    // Convert to "de" only by truncating "_DE"
+    QString lang = lang_territory;
+    lang.truncate(lang_territory.lastIndexOf('_'));
+
+    // Load language files for configured locale:
+    // - First load the translator for the base language, without territory
+    // - Then load the more specific locale translator
+
+    // Load e.g. qt_de.qm
+    if (qtTranslatorBase.load("qt_" + lang, QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
+        QApplication::installTranslator(&qtTranslatorBase);
+
+    // Load e.g. qt_de_DE.qm
+    if (qtTranslator.load("qt_" + lang_territory, QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
+        QApplication::installTranslator(&qtTranslator);
+
+    // Load e.g. bitcoin_de.qm (shortcut "de" needs to be defined in bitcoin.qrc)
+    if (translatorBase.load(lang, ":/translations/"))
+        QApplication::installTranslator(&translatorBase);
+
+    // Load e.g. bitcoin_de_DE.qm (shortcut "de_DE" needs to be defined in bitcoin.qrc)
+    if (translator.load(lang_territory, ":/translations/"))
+        QApplication::installTranslator(&translator);
+}
+
 #ifndef BITCOIN_QT_TEST
 int main(int argc, char *argv[])
 {
@@ -130,6 +172,22 @@ int main(int argc, char *argv[])
     // Register meta types used for QMetaObject::invokeMethod
     qRegisterMetaType< bool* >();
 
+    // Application identification (must be set before OptionsModel is initialized,
+    // as it is used to locate QSettings)
+    QApplication::setOrganizationName("Bitcoin");
+    QApplication::setOrganizationDomain("bitcoin.org");
+    if (GetBoolArg("-testnet", false)) // Separate UI settings for testnet
+        QApplication::setApplicationName("Bitcoin-Qt-testnet");
+    else
+        QApplication::setApplicationName("Bitcoin-Qt");
+
+    // Now that QSettings are accessible, initialize translations
+    QTranslator qtTranslatorBase, qtTranslator, translatorBase, translator;
+    initTranslations(qtTranslatorBase, qtTranslator, translatorBase, translator);
+
+    // User language is set up: pick a data directory
+    Intro::pickDataDirectory();
+
     // Do this early as we don't want to bother initializing if we are just calling IPC
     // ... but do it after creating app, so QCoreApplication::arguments is initialized:
     if (PaymentServer::ipcSendCommandLine())
@@ -142,53 +200,15 @@ int main(int argc, char *argv[])
     // ... then bitcoin.conf:
     if (!boost::filesystem::is_directory(GetDataDir(false)))
     {
-        // This message can not be translated, as translation is not initialized yet
-        // (which not yet possible because lang=XX can be overridden in bitcoin.conf in the data directory)
-        QMessageBox::critical(0, "Bitcoin",
-                              QString("Error: Specified data directory \"%1\" does not exist.").arg(QString::fromStdString(mapArgs["-datadir"])));
+        QMessageBox::critical(0, QObject::tr("Bitcoin"),
+                              QObject::tr("Error: Specified data directory \"%1\" does not exist.").arg(QString::fromStdString(mapArgs["-datadir"])));
         return 1;
     }
     ReadConfigFile(mapArgs, mapMultiArgs);
 
-    // Application identification (must be set before OptionsModel is initialized,
-    // as it is used to locate QSettings)
-    QApplication::setOrganizationName("Bitcoin");
-    QApplication::setOrganizationDomain("bitcoin.org");
-    if (GetBoolArg("-testnet", false)) // Separate UI settings for testnet
-        QApplication::setApplicationName("Bitcoin-Qt-testnet");
-    else
-        QApplication::setApplicationName("Bitcoin-Qt");
-
     // ... then GUI settings:
     OptionsModel optionsModel;
 
-    // Get desired locale (e.g. "de_DE") from command line or use system locale
-    QString lang_territory = QString::fromStdString(GetArg("-lang", QLocale::system().name().toStdString()));
-    QString lang = lang_territory;
-    // Convert to "de" only by truncating "_DE"
-    lang.truncate(lang_territory.lastIndexOf('_'));
-
-    QTranslator qtTranslatorBase, qtTranslator, translatorBase, translator;
-    // Load language files for configured locale:
-    // - First load the translator for the base language, without territory
-    // - Then load the more specific locale translator
-
-    // Load e.g. qt_de.qm
-    if (qtTranslatorBase.load("qt_" + lang, QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
-        app.installTranslator(&qtTranslatorBase);
-
-    // Load e.g. qt_de_DE.qm
-    if (qtTranslator.load("qt_" + lang_territory, QLibraryInfo::location(QLibraryInfo::TranslationsPath)))
-        app.installTranslator(&qtTranslator);
-
-    // Load e.g. bitcoin_de.qm (shortcut "de" needs to be defined in bitcoin.qrc)
-    if (translatorBase.load(lang, ":/translations/"))
-        app.installTranslator(&translatorBase);
-
-    // Load e.g. bitcoin_de_DE.qm (shortcut "de_DE" needs to be defined in bitcoin.qrc)
-    if (translator.load(lang_territory, ":/translations/"))
-        app.installTranslator(&translator);
-
     // Subscribe to global signals from core
     uiInterface.ThreadSafeMessageBox.connect(ThreadSafeMessageBox);
     uiInterface.ThreadSafeAskFee.connect(ThreadSafeAskFee);