Fix recursive repaint after label scale.

--HG--
branch : feature

src/libs/vmisc/def.h

@@ -228,6 +228,7 @@ enum class Vis : ToolVisHolderType
     GrainlineItem,
     PieceItem,
     TextGraphicsItem,
+    ScenePoint,
     LAST_ONE_DO_NOT_USE //add new stuffs above this, this constant must be last and never used
 };
 

src/libs/vwidgets/vgraphicssimpletextitem.cpp

@@ -46,6 +46,9 @@
 #include "vmaingraphicsscene.h"
 #include "vmaingraphicsview.h"
 #include "global.h"
+#include "vscenepoint.h"
+
+#define DEFAULT_SCALE 0.0001
 
 //---------------------------------------------------------------------------------------------------------------------
 /**
@@ -53,7 +56,8 @@
  * @param parent parent object.
  */
 VGraphicsSimpleTextItem::VGraphicsSimpleTextItem(QGraphicsItem * parent)
-    :QGraphicsSimpleTextItem(parent), m_fontSize(0), selectionType(SelectionType::ByMouseRelease)
+    :QGraphicsSimpleTextItem(parent), m_fontSize(0), selectionType(SelectionType::ByMouseRelease),
+      m_oldScale(DEFAULT_SCALE)
 {
     this->setFlag(QGraphicsItem::ItemIsMovable, true);
     this->setFlag(QGraphicsItem::ItemIsSelectable, true);
@@ -64,6 +68,7 @@ VGraphicsSimpleTextItem::VGraphicsSimpleTextItem(QGraphicsItem * parent)
     font.setPointSize(font.pointSize()+20);
     m_fontSize = font.pointSize();
     this->setFont(font);
+    setScale(m_oldScale);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -73,23 +78,53 @@ VGraphicsSimpleTextItem::VGraphicsSimpleTextItem(QGraphicsItem * parent)
  * @param parent parent object.
  */
 VGraphicsSimpleTextItem::VGraphicsSimpleTextItem( const QString & text, QGraphicsItem * parent )
-    :QGraphicsSimpleTextItem(text, parent), m_fontSize(0), selectionType(SelectionType::ByMouseRelease)
+    :QGraphicsSimpleTextItem(text, parent), m_fontSize(0), selectionType(SelectionType::ByMouseRelease),
+      m_oldScale(DEFAULT_SCALE)
 {
     this->setFlag(QGraphicsItem::ItemIsMovable, true);
     this->setFlag(QGraphicsItem::ItemIsSelectable, true);
     this->setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
     this->setAcceptHoverEvents(true);
+    setScale(m_oldScale);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
 void VGraphicsSimpleTextItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
 {
-    const qreal scale = SceneScale(scene());
-    if (scale > 1)
+    auto UpdateLine = [this]()
     {
+        if (VScenePoint *parent = dynamic_cast<VScenePoint *>(parentItem()))
+        {
+            parent->RefreshLine();
+        }
+    };
+
+    QGraphicsScene *scene = this->scene();
+    const qreal scale = SceneScale(scene);
+    if (scale > 1 && not VFuzzyComparePossibleNulls(m_oldScale, scale))
+    {
+        const QRectF nameRec = boundingRect();
+        setTransformOriginPoint(nameRec.center());
         setScale(1/scale);
+        UpdateLine();
+        m_oldScale = scale;
+    }
+    else if (scale <= 1 && not VFuzzyComparePossibleNulls(m_oldScale, 1.0))
+    {
+        const QRectF nameRec = boundingRect();
+        setTransformOriginPoint(nameRec.center());
+        setScale(1);
+        UpdateLine();
+        m_oldScale = 1;
     }
 
+    if (scene)
+    {
+        if (QGraphicsView *view = scene->views().at(0))
+        {
+            VMainGraphicsView::NewSceneRect(scene, view);
+        }
+    }
     QGraphicsSimpleTextItem::paint(painter, option, widget);
 }
 

src/libs/vwidgets/vgraphicssimpletextitem.h

@@ -87,6 +87,7 @@ private:
     /** @brief fontSize label font size. */
     qint32        m_fontSize;
     SelectionType selectionType;
+    qreal         m_oldScale;
 };
 
 //---------------------------------------------------------------------------------------------------------------------

src/libs/vwidgets/vscenepoint.h

@@ -32,6 +32,8 @@
 #include <QtGlobal>
 #include <QGraphicsEllipseItem>
 
+#include "../vmisc/def.h"
+
 class VGraphicsSimpleTextItem;
 class VPointF;
 class VScaledLine;
@@ -42,10 +44,15 @@ public:
     explicit VScenePoint(QGraphicsItem *parent = nullptr);
     virtual ~VScenePoint() = default;
 
+    virtual int  type() const Q_DECL_OVERRIDE {return Type;}
+    enum { Type = UserType + static_cast<int>(Vis::ScenePoint)};
+
     virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
                        QWidget *widget = nullptr) Q_DECL_OVERRIDE;
     virtual void RefreshPointGeometry(const VPointF &point);
 
+    void RefreshLine();
+
 protected:
     /** @brief namePoint point label. */
     VGraphicsSimpleTextItem *m_namePoint;
@@ -63,8 +70,6 @@ protected:
     virtual void hoverEnterEvent(QGraphicsSceneHoverEvent *event) Q_DECL_OVERRIDE;
     virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) Q_DECL_OVERRIDE;
 
-    void RefreshLine();
-
     void SetOnlyPoint(bool value);
     bool IsOnlyPoint() const;
 private: