rbutil: Fix TTS "waiting for engine" appearing randomly.

QProgressDialog shows / hides itself automatically based on the progress
value set, so calling hide() directly doesn't prevent the dialog from
showing itself.

Change the logic to set a value instead. Fixes the progress dialog
sometimes appearing in situations where it wasn't used at all.

Change-Id: Ifef063f31b7f888bb74f180dea0679e81cc5c8fe

utils/rbutilqt/base/encttssettings.h

@@ -108,8 +108,7 @@ public:
     virtual void saveSettings() = 0;
     
 signals:
-    void busy();  // emit this if a operation takes time
-    void busyEnd(); // emit this at the end of a busy section
+    void busy(bool show);  // emit this if a operation takes time
 
 protected:
     //! Child class should fill in the setttingsList

utils/rbutilqt/base/ttsfestival.cpp

@@ -336,14 +336,14 @@ QString TTSFestival::queryServer(QString query, int timeout)
         return "";
 
     // this operation could take some time
-    emit busy();
+    emit busy(true);
 
     LOG_INFO() << "queryServer with" << query;
 
     if (!ensureServerRunning())
     {
       LOG_ERROR() << "queryServer: ensureServerRunning failed";
-      emit busyEnd();
+      emit busy(false);
       return "";
     }
 
@@ -391,7 +391,7 @@ QString TTSFestival::queryServer(QString query, int timeout)
         while(QDateTime::currentDateTime() < tmpEndTime)
             QCoreApplication::processEvents(QEventLoop::AllEvents);
     }
-    emit busyEnd();
+    emit busy(false);
     socket.disconnectFromHost();
 
     if(response == "nil")

utils/rbutilqt/encttscfggui.cpp

@@ -40,14 +40,14 @@ EncTtsCfgGui::EncTtsCfgGui(QDialog* parent, EncTtsSettingInterface* iface, QStri
           m_busyCnt(0)
 {
     // create a busy Dialog
-    m_busyDlg= new QProgressDialog("", "", 0, 0,this);
+    m_busyDlg= new QProgressDialog("", "", 0, 1, this);
     m_busyDlg->setWindowTitle(tr("Waiting for engine..."));
     m_busyDlg->setModal(true);
     m_busyDlg->setLabel(nullptr);
     m_busyDlg->setCancelButton(nullptr);
-    m_busyDlg->hide();
-    connect(iface, &EncTtsSettingInterface::busy, this, &EncTtsCfgGui::showBusy);
-    connect(iface, &EncTtsSettingInterface::busyEnd, this, &EncTtsCfgGui::hideBusy);
+    m_busyDlg->setMinimumDuration(100);
+    m_busyDlg->setValue(1);
+    connect(iface, &EncTtsSettingInterface::busy, this, &EncTtsCfgGui::busyDialog);
 
     //setup the window
     setWindowTitle(name);
@@ -279,18 +279,21 @@ QWidget* EncTtsCfgGui::createButton(EncTtsSetting* setting)
 }
 
 
-void EncTtsCfgGui::showBusy()
+void EncTtsCfgGui::busyDialog(bool show)
 {
-    if(m_busyCnt == 0) m_busyDlg->show();
-
-    m_busyCnt++;
-}
-
-void EncTtsCfgGui::hideBusy()
-{
-    m_busyCnt--;
-
-    if(m_busyCnt == 0) m_busyDlg->hide();
+    if(show)
+    {
+        m_busyDlg->setValue(0);
+        m_busyCnt++;
+    }
+    else
+    {
+        m_busyDlg->setValue(1);
+        if(m_busyCnt > 0)
+        {
+            m_busyCnt--;
+        }
+    }
 }
 
 

utils/rbutilqt/encttscfggui.h

@@ -40,10 +40,8 @@ private slots:
     void accept(void);
     //! close window and dont save configuration
     void reject(void);
-    //! shows a busy dialog. counts calls.
-    void showBusy();
-    //! hides the busy dialog, counts calls
-    void hideBusy();
+    //! show / hide the busy dialog, counts calls
+    void busyDialog(bool show);
 
 private:
     //! creates all dynamic window content