5 files changed, 47 insertions, 0 deletions
diff --git a/src/qt/bitcoingui.cpp b/src/qt/bitcoingui.cpp
index 68ae8b4668..3469f990ac 100644
--- a/src/qt/bitcoingui.cpp
+++ b/src/qt/bitcoingui.cpp
@@ -40,6 +40,7 @@
 #include <QMessageBox>
 #include <QMimeData>
 #include <QProgressBar>
+#include <QProgressDialog>
 #include <QSettings>
 #include <QStackedWidget>
 #include <QStatusBar>
@@ -409,6 +410,9 @@ void BitcoinGUI::setClientModel(ClientModel *clientModel)
         // Receive and report messages from client model
         connect(clientModel, SIGNAL(message(QString,QString,unsigned int)), this, SLOT(message(QString,QString,unsigned int)));
 
+        // Show progress dialog
+        connect(clientModel, SIGNAL(showProgress(QString,int)), this, SLOT(showProgress(QString,int)));
+
         rpcConsole->setClientModel(clientModel);
 #ifdef ENABLE_WALLET
         if(walletFrame)
@@ -949,6 +953,29 @@ void BitcoinGUI::detectShutdown()
     }
 }
 
+void BitcoinGUI::showProgress(const QString &title, int nProgress)
+{
+    if (nProgress == 0)
+    {
+        progressDialog = new QProgressDialog(title, "", 0, 100);
+        progressDialog->setWindowModality(Qt::ApplicationModal);
+        progressDialog->setMinimumDuration(0);
+        progressDialog->setCancelButton(0);
+        progressDialog->setAutoClose(false);
+        progressDialog->setValue(0);
+    }
+    else if (nProgress == 100)
+    {
+        if (progressDialog)
+        {
+            progressDialog->close();
+            progressDialog->deleteLater();
+        }
+    }
+    else if (progressDialog)
+        progressDialog->setValue(nProgress);
+}
+
 static bool ThreadSafeMessageBox(BitcoinGUI *gui, const std::string& message, const std::string& caption, unsigned int style)
 {
     bool modal = (style & CClientUIInterface::MODAL);
diff --git a/src/qt/bitcoingui.h b/src/qt/bitcoingui.h
index b4675b95ac..275fa35f39 100644
--- a/src/qt/bitcoingui.h
+++ b/src/qt/bitcoingui.h
@@ -26,6 +26,7 @@ QT_BEGIN_NAMESPACE
 class QAction;
 class QLabel;
 class QProgressBar;
+class QProgressDialog;
 QT_END_NAMESPACE
 
 /**
@@ -73,6 +74,7 @@ private:
     QLabel *labelBlocksIcon;
     QLabel *progressBarLabel;
     QProgressBar *progressBar;
+    QProgressDialog *progressDialog;
 
     QMenuBar *appMenuBar;
     QAction *overviewAction;
@@ -191,6 +193,9 @@ private slots:
 
     /** called by a timer to check if fRequestShutdown has been set **/
     void detectShutdown();
+
+    /** Show progress dialog e.g. for verifychain */
+    void showProgress(const QString &title, int nProgress);
 };
 
 #endif // BITCOINGUI_H
diff --git a/src/qt/clientmodel.cpp b/src/qt/clientmodel.cpp
index ce773e0f82..656c8bd113 100644
--- a/src/qt/clientmodel.cpp
+++ b/src/qt/clientmodel.cpp
@@ -206,6 +206,14 @@ QString ClientModel::formatClientStartupTime() const
 }
 
 // Handlers for core signals
+static void ShowProgress(ClientModel *clientmodel, const std::string &title, int nProgress)
+{
+    // emits signal "showProgress"
+    QMetaObject::invokeMethod(clientmodel, "showProgress", Qt::QueuedConnection,
+                              Q_ARG(QString, QString::fromStdString(title)),
+                              Q_ARG(int, nProgress));
+}
+
 static void NotifyBlocksChanged(ClientModel *clientmodel)
 {
     // This notification is too frequent. Don't trigger a signal.
@@ -230,6 +238,7 @@ static void NotifyAlertChanged(ClientModel *clientmodel, const uint256 &hash, Ch
 void ClientModel::subscribeToCoreSignals()
 {
     // Connect signals to client
+    uiInterface.ShowProgress.connect(boost::bind(ShowProgress, this, _1, _2));
     uiInterface.NotifyBlocksChanged.connect(boost::bind(NotifyBlocksChanged, this));
     uiInterface.NotifyNumConnectionsChanged.connect(boost::bind(NotifyNumConnectionsChanged, this, _1));
     uiInterface.NotifyAlertChanged.connect(boost::bind(NotifyAlertChanged, this, _1, _2));
@@ -238,6 +247,7 @@ void ClientModel::subscribeToCoreSignals()
 void ClientModel::unsubscribeFromCoreSignals()
 {
     // Disconnect signals from client
+    uiInterface.ShowProgress.disconnect(boost::bind(ShowProgress, this, _1, _2));
     uiInterface.NotifyBlocksChanged.disconnect(boost::bind(NotifyBlocksChanged, this));
     uiInterface.NotifyNumConnectionsChanged.disconnect(boost::bind(NotifyNumConnectionsChanged, this, _1));
     uiInterface.NotifyAlertChanged.disconnect(boost::bind(NotifyAlertChanged, this, _1, _2));
diff --git a/src/qt/clientmodel.h b/src/qt/clientmodel.h
index c18d30178b..9c9a35b654 100644
--- a/src/qt/clientmodel.h
+++ b/src/qt/clientmodel.h
@@ -95,6 +95,9 @@ signals:
     //! Fired when a message should be reported to the user
     void message(const QString &title, const QString &message, unsigned int style);
 
+    // Show progress dialog e.g. for verifychain
+    void showProgress(const QString &title, int nProgress);
+
 public slots:
     void updateTimer();
     void updateNumConnections(int numConnections);
diff --git a/src/qt/splashscreen.cpp b/src/qt/splashscreen.cpp
index 7c79b0efd0..1162e2d87f 100644
--- a/src/qt/splashscreen.cpp
+++ b/src/qt/splashscreen.cpp
@@ -129,6 +129,7 @@ void SplashScreen::subscribeToCoreSignals()
 {
     // Connect signals to client
     uiInterface.InitMessage.connect(boost::bind(InitMessage, this, _1));
+    uiInterface.ShowProgress.connect(boost::bind(ShowProgress, this, _1, _2));
 #ifdef ENABLE_WALLET
     uiInterface.LoadWallet.connect(boost::bind(ConnectWallet, this, _1));
 #endif
@@ -138,6 +139,7 @@ void SplashScreen::unsubscribeFromCoreSignals()
 {
     // Disconnect signals from client
     uiInterface.InitMessage.disconnect(boost::bind(InitMessage, this, _1));
+    uiInterface.ShowProgress.disconnect(boost::bind(ShowProgress, this, _1, _2));
 #ifdef ENABLE_WALLET
     if(pwalletMain)
         pwalletMain->ShowProgress.disconnect(boost::bind(ShowProgress, this, _1, _2));