created block node type

nodes/nodes/nodeblock.cpp

@@ -0,0 +1,29 @@
+#include "nodeblock.h"
+
+NodeBlock::NodeBlock(NodeGraph *graph) :
+  Node(graph)
+{
+  previous_block_ = new NodeIO(this, "prev_block", tr("Previous"), true, false);
+  previous_block_->AddAcceptedNodeInput(olive::nodes::kBlock);
+
+  AddParameter(previous_block_);
+
+  next_block_ = new NodeIO(this, "next_block", tr("Next"), true, false);
+  previous_block_->SetOutputDataType(olive::nodes::kBlock);
+  AddParameter(next_block_);
+}
+
+QString NodeBlock::name()
+{
+  return tr("Block");
+}
+
+QString NodeBlock::id()
+{
+  return "block";
+}
+
+NodeBlock *NodeBlock::previous_block()
+{
+
+}

nodes/nodes/nodeblock.h

@@ -0,0 +1,37 @@
+#ifndef NODEBLOCK_H
+#define NODEBLOCK_H
+
+#include "global/rational.h"
+#include "nodes/node.h"
+
+/**
+ * @brief The NodeBlock class
+ *
+ * A "Block" node is a node with a timed in-point and out-point that can appear on the Timeline.
+ */
+class NodeBlock : public Node
+{
+  Q_OBJECT
+public:
+  NodeBlock(NodeGraph* graph);
+
+  const olive::rational& track_in();
+  const olive::rational& track_out();
+
+  const olive::rational& length();
+  void set_length(const olive::rational& l);
+
+  virtual QString name() override;
+  virtual QString id() override;
+
+  NodeBlock* previous_block();
+  NodeBlock* next_block();
+
+private:
+  olive::rational length_;
+
+  NodeIO* previous_block_;
+  NodeIO* next_block_;
+};
+
+#endif // NODEBLOCK_H