refs #477, load indicator appears in wrong place.

A first improvement by re-centering it when view becomes visible.

src/blackgui/loadindicator.cpp

@@ -103,10 +103,17 @@ namespace BlackGui
         this->paint(p);
     }
 
+    bool CLoadIndicator::isParentVisible() const
+    {
+        if (this->parentWidget()) { return parentWidget()->isVisible(); }
+        return false;
+    }
+
     void CLoadIndicator::paint(QPainter &painter) const
     {
         if (!m_displayedWhenStopped && !isAnimated()) { return; }
         if (!this->isVisible() || !this->isEnabled()) { return; }
+        if (!isParentVisible()) { return; }
 
         int width = qMin(this->width(), this->height());
         painter.setRenderHint(QPainter::Antialiasing);

src/blackgui/loadindicator.h

@@ -96,6 +96,9 @@ namespace BlackGui
         //! \copydoc QWidget::paintEvent
         virtual void paintEvent(QPaintEvent *event) override;
 
+        //! Is parent widget visible
+        bool isParentVisible() const;
+
     private:
         int m_angle                 = 0;
         int m_timerId               = -1;

src/blackgui/views/viewbase.cpp

@@ -158,6 +158,16 @@ namespace BlackGui
             // CStyleSheetUtility::useStyleSheetInDerivedWidget(this, QStyle::PE_Widget);
         }
 
+        void CViewBaseNonTemplate::showEvent(QShowEvent *event)
+        {
+            if (this->isShowingLoadIndicator())
+            {
+                // re-center
+                this->centerLoadIndicator();
+            }
+            QTableView::showEvent(event);
+        }
+
         void CViewBaseNonTemplate::allowDragDropValueObjects(bool allowDrag, bool allowDrop)
         {
             // see model for implementing logic of drag
@@ -246,17 +256,21 @@ namespace BlackGui
 
             if (!this->m_loadIndicator)
             {
-                this->m_loadIndicator = new CLoadIndicator(64, 64, this->viewport());
+                this->m_loadIndicator = new CLoadIndicator(64, 64, this);
-                // connect(this->m_loadIndicator, &CLoadIndicator::updatedAnimation, this, &CViewBaseNonTemplate::ps_updatedIndicator);
-
             }
-            QPoint middle = this->geometry().center();
+            this->centerLoadIndicator();
+            this->m_loadIndicator->startAnimation();
+        }
+
+        void CViewBaseNonTemplate::centerLoadIndicator()
+        {
+            if (!m_loadIndicator) { return; }
+            QPoint middle = this->viewport()->geometry().center();
             int w = m_loadIndicator->width();
             int h = m_loadIndicator->height();
             int x = middle.x() - w / 2;
             int y = middle.y() - h / 2;
             this->m_loadIndicator->setGeometry(x, y, w, h);
-            this->m_loadIndicator->startAnimation();
         }
 
         void CViewBaseNonTemplate::hideLoadIndicator()
@@ -379,7 +393,7 @@ namespace BlackGui
             {
                 return model->sortContainerByColumn(container, sortColumn, sortOrder);
             });
-            worker->thenWithResult<ContainerType>(this, [this, resize](const ContainerType &sortedContainer)
+            worker->thenWithResult<ContainerType>(this, [this, resize](const ContainerType & sortedContainer)
             {
                 this->ps_updateContainer(CVariant::from(sortedContainer), false, resize);
             });

src/blackgui/views/viewbase.h

@@ -160,6 +160,9 @@ namespace BlackGui
             //! \copydoc QTableView::paintEvent
             virtual void paintEvent(QPaintEvent *event) override;
 
+            //! \copydoc QTableView::showEvent
+            virtual void showEvent(QShowEvent *event) override;
+
             //! Perform resizing / non slot method for template
             virtual void performModeBasedResizeToContent() = 0;
 
@@ -175,6 +178,9 @@ namespace BlackGui
             //! Resize or skip resize?
             virtual bool isResizeConditionMet(int containerSize = -1) const;
 
+            //! Center / re-center load indicator
+            void centerLoadIndicator();
+
             //! Init default values
             void init();