nodeparamview: implemented add button

app/node/node.h

@@ -95,7 +95,9 @@ public:
 
   enum Flag {
     kNone = 0,
-    kDontShowInParamView = 0x1
+    kDontShowInParamView = 0x1,
+    kVideoEffect = 0x2,
+    kAudioEffect = 0x4
   };
 
   Node();
@@ -539,6 +541,11 @@ public:
 
   int InputArraySize(const QString& id) const;
 
+  NodeInput GetEffectInput()
+  {
+    return effect_input_.isEmpty() ? NodeInput() : NodeInput(this, effect_input_, effect_element_);
+  }
+
   class ValueHint {
   public:
     explicit ValueHint(const QVector<NodeValue::Type> &types = QVector<NodeValue::Type>(), int index = -1, const QString &tag = QString()) :
@@ -889,6 +896,9 @@ public:
     cache_result_ = e;
   }
 
+  bool IsBypassed() const { return bypass_; }
+  void SetBypassed(bool e) { bypass_ = e; }
+
   class ArrayRemoveCommand : public UndoCommand
   {
   public:
@@ -1027,6 +1037,12 @@ protected:
 
   virtual void childEvent(QChildEvent *event) override;
 
+  void SetEffectInput(const QString &input, int element = -1)
+  {
+    effect_input_ = input;
+    effect_element_ = element;
+  }
+
   void SetToolTip(const QString& s)
   {
     tooltip_ = s;
@@ -1342,6 +1358,11 @@ private:
 
   QVector<NodeGizmo*> gizmos_;
 
+  QString effect_input_;
+  int effect_element_;
+
+  bool bypass_;
+
 private slots:
   /**
    * @brief Slot when a keyframe's time changes to keep the keyframes correctly sorted by time