Merge branch 'feature/bug_moving_scalarbar' into 'develop'

Feature/bug moving scalarbar

See merge request !44

src/dtkVisualization/dtkVisualizationCanvas.cpp

@@ -214,11 +214,14 @@ vtkRenderWindowInteractor *dtkVisualizationCanvas::interactor(void)
 
 void dtkVisualizationCanvas::addScalarBar(vtkScalarBarActor *scalar_bar)
 {
+    if (this->renderer() && this->renderer()->GetViewProps()->IsItemPresent(scalar_bar)) {
+        return;
+    }
+
     ++d->nb_scalar_bars;
 
     std::size_t orientation = d->nb_scalar_bars % 2; // 0: horizontal, 1: vertical
-    std::size_t side        = (d->nb_scalar_bars % 4) >= 2; // 0: right, 1: left
-    std::size_t loop        = d->nb_scalar_bars / 4;
+    std::size_t side        = (d->nb_scalar_bars % 4) < 2; // 0: right, 1: left
 
     scalar_bar->SetOrientation(orientation);