[Qt] Show ModalOverlay by pressing the progress bar, disabled show() in sync mode

src/qt/bitcoingui.cpp

@@ -46,7 +46,6 @@
 #include <QMenuBar>
 #include <QMessageBox>
 #include <QMimeData>
-#include <QProgressBar>
 #include <QProgressDialog>
 #include <QSettings>
 #include <QShortcut>
@@ -251,6 +250,7 @@ BitcoinGUI::BitcoinGUI(const PlatformStyle *_platformStyle, const NetworkStyle *
     if(enableWallet) {
         connect(walletFrame, SIGNAL(requestedSyncWarningInfo()), this, SLOT(showModalOverlay()));
         connect(labelBlocksIcon, SIGNAL(clicked(QPoint)), this, SLOT(showModalOverlay()));
+        connect(progressBar, SIGNAL(clicked(QPoint)), this, SLOT(showModalOverlay()));
     }
 #endif
 }
@@ -1138,8 +1138,8 @@ void BitcoinGUI::setTrayIconVisible(bool fHideTrayIcon)
 
 void BitcoinGUI::showModalOverlay()
 {
-    if (modalOverlay)
-        modalOverlay->showHide(false, true);
+    if (modalOverlay && (progressBar->isVisible() || modalOverlay->isLayerVisible()))
+        modalOverlay->toggleVisibility();
 }
 
 static bool ThreadSafeMessageBox(BitcoinGUI *gui, const std::string& message, const std::string& caption, unsigned int style)

src/qt/guiutil.cpp

@@ -988,7 +988,12 @@ QString formateNiceTimeOffset(qint64 secs)
     return timeBehindText;
 }
 
-void ClickableLabel::mousePressEvent(QMouseEvent *event)
+void ClickableLabel::mouseReleaseEvent(QMouseEvent *event)
+{
+    Q_EMIT clicked(event->pos());
+}
+    
+void ClickableProgressBar::mouseReleaseEvent(QMouseEvent *event)
 {
     Q_EMIT clicked(event->pos());
 }

src/qt/guiutil.h

@@ -202,20 +202,6 @@ namespace GUIUtil
 
     QString formateNiceTimeOffset(qint64 secs);
 
-#if defined(Q_OS_MAC) && QT_VERSION >= 0x050000
-    // workaround for Qt OSX Bug:
-    // https://bugreports.qt-project.org/browse/QTBUG-15631
-    // QProgressBar uses around 10% CPU even when app is in background
-    class ProgressBar : public QProgressBar
-    {
-        bool event(QEvent *e) {
-            return (e->type() != QEvent::StyleAnimationUpdate) ? QProgressBar::event(e) : false;
-        }
-    };
-#else
-    typedef QProgressBar ProgressBar;
-#endif
-
     class ClickableLabel : public QLabel
     {
         Q_OBJECT
@@ -226,9 +212,36 @@ namespace GUIUtil
          */
         void clicked(const QPoint& point);
     protected:
-        void mousePressEvent(QMouseEvent *event);
+        void mouseReleaseEvent(QMouseEvent *event);
     };
     
+    class ClickableProgressBar : public QProgressBar
+    {
+        Q_OBJECT
+        
+    Q_SIGNALS:
+        /** Emitted when the progressbar is clicked. The relative mouse coordinates of the click are
+         * passed to the signal.
+         */
+        void clicked(const QPoint& point);
+    protected:
+        void mouseReleaseEvent(QMouseEvent *event);
+    };
+
+#if defined(Q_OS_MAC) && QT_VERSION >= 0x050000
+    // workaround for Qt OSX Bug:
+    // https://bugreports.qt-project.org/browse/QTBUG-15631
+    // QProgressBar uses around 10% CPU even when app is in background
+    class ProgressBar : public ClickableProgressBar
+    {
+        bool event(QEvent *e) {
+            return (e->type() != QEvent::StyleAnimationUpdate) ? QProgressBar::event(e) : false;
+        }
+    };
+#else
+    typedef ClickableProgressBar ProgressBar;
+#endif
+
 } // namespace GUIUtil
 
 #endif // BITCOIN_QT_GUIUTIL_H

src/qt/modaloverlay.cpp

@@ -137,6 +137,13 @@ void ModalOverlay::tipUpdate(int count, const QDateTime& blockDate, double nVeri
     }
 }
 
+void ModalOverlay::toggleVisibility()
+{
+    showHide(layerIsVisible, true);
+    if (!layerIsVisible)
+        userClosed = true;
+}
+
 void ModalOverlay::showHide(bool hide, bool userRequested)
 {
     if ( (layerIsVisible && !hide) || (!layerIsVisible && hide) || (!hide && userClosed && !userRequested))

src/qt/modaloverlay.h

@@ -25,9 +25,11 @@ public Q_SLOTS:
     void tipUpdate(int count, const QDateTime& blockDate, double nVerificationProgress);
     void setKnownBestHeight(int count, const QDateTime& blockDate);
 
+    void toggleVisibility();
     // will show or hide the modal layer
     void showHide(bool hide = false, bool userRequested = false);
     void closeClicked();
+    bool isLayerVisible() { return layerIsVisible; }
 
 protected:
     bool eventFilter(QObject * obj, QEvent * ev);