repair bug introduced in ada416 (line masks not shown)

GUI/View/Overlay/IOverlay.h

@@ -38,9 +38,9 @@ public:
 public slots:
     void onGeometryChange();
     void onVisibilityChange();
+    virtual void update_view() = 0; //!< update visual appearance of view (triggered by event)
 
 protected slots:
-    virtual void update_view() = 0; //!< update visual appearance of view (triggered by event)
     virtual void onChangedX() {}
     virtual void onChangedY() {}
     virtual void onPropertyChange() {}

GUI/View/Overlay/LineOverlays.cpp

@@ -19,7 +19,6 @@
 #include <QCursor>
 #include <QPainter>
 #include <QStyleOptionGraphicsItem>
-#include <iostream>
 
 namespace {
 
@@ -145,8 +144,6 @@ void VerticalLineOverlay::update_view()
     setX(m_plot->toSceneX(m_item->pos()));
     setY(plot_scene_rectangle.top());
 
-    std::cout<<"DEBUG height="<<plot_scene_rectangle.height()<<" xhig_in="<<m_item->pos()
-	     <<" xhig_to="<<m_plot->toSceneX(m_item->pos())<<" width="<<mask_width<<std::endl;
     m_bounding_rect = QRectF(-mask_width / 2., 0.0, mask_width, plot_scene_rectangle.height());
     update();
 }

GUI/View/Scene/MaskGraphicsScene.cpp

@@ -26,7 +26,6 @@
 #include "GUI/View/Scene/MaskGraphicsProxy.h"
 #include "GUI/View/Scene/OverlayFactory.h"
 #include <QGraphicsSceneContextMenuEvent>
-#include <iostream>
 
 namespace {
 
@@ -447,6 +446,7 @@ IOverlay* MaskGraphicsScene::registerOverlay(OverlayItem* item)
         m_mask2overlay[item] = overlay;
         addItem(overlay);
     }
+    overlay->update_view();
     return overlay;
 }
 
@@ -578,7 +578,6 @@ void MaskGraphicsScene::processLineItem(QGraphicsSceneMouseEvent* event)
     setDrawingInProgress(true);
     QPointF click_pos = event->buttonDownScenePos(Qt::LeftButton);
 
-    std::cout<<"DEBUG MaskGraphicsScene::processLineItem mm="<<m_mask_mode<<std::endl;
     if (m_mask_mode == MaskFlags::VERTICAL_LINE_MODE)
         processVerticalLineItem(click_pos);
     if (m_mask_mode == MaskFlags::HORIZONTAL_LINE_MODE)
@@ -602,8 +601,6 @@ void MaskGraphicsScene::processVerticalLineItem(const QPointF& pos)
     m_mask_list_model->insertMask(0, item);
     m_active_mask = item;
     item->setPos(m_plot->fromSceneX(pos.x()));
-    std::cout<<"DEBUG MaskGraphicsScene::processVerticalLineItem xin="<<pos.x()<<" xout="
-	     <<m_plot->fromSceneX(pos.x())<<std::endl;
 }
 
 void MaskGraphicsScene::processHorizontalLineItem(const QPointF& pos)