implemented the ability to modify bezier points in the curve editor

app/widget/curvewidget/curveview.h

@@ -1,6 +1,7 @@
 #ifndef CURVEVIEW_H
 #define CURVEVIEW_H
 
+#include "beziercontrolpointitem.h"
 #include "node/keyframe.h"
 #include "widget/keyframeview/keyframeview.h"
 #include "widget/keyframeview/keyframeviewitem.h"
@@ -10,6 +11,8 @@ class CurveView : public KeyframeViewBase
 public:
   CurveView(QWidget* parent = nullptr);
 
+  virtual ~CurveView() override;
+
   virtual void Clear() override;
 
   void SetYScale(const double& y_scale);
@@ -22,6 +25,8 @@ protected:
 
   virtual void KeyframeAboutToBeRemoved(NodeKeyframe *key) override;
 
+  virtual void ScaleChangedEvent(double scale) override;
+
 private:
   QList<NodeKeyframe*> GetKeyframesSortedByTime();
 
@@ -29,6 +34,8 @@ private:
 
   void SetItemYFromKeyframeValue(NodeKeyframe* key, KeyframeViewItem* item);
 
+  QPointF ScalePoint(const QPointF& point);
+
   void AdjustLines();
 
   int text_padding_;
@@ -39,9 +46,15 @@ private:
 
   QList<QGraphicsLineItem*> lines_;
 
+  QList<BezierControlPointItem*> bezier_control_points_;
+
 private slots:
   void KeyframeValueChanged();
 
+  void SelectionChanged();
+
+  void BezierControlPointDestroyed();
+
 };
 
 #endif // CURVEVIEW_H