restored nodeview

2021-01-19 00:06:57 +11:00
parent 835b82205f
commit 8e7035bd40
10 changed files with 2307 additions and 14 deletions
@@ -0,0 +1,143 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2020 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#ifndef NODEEDGEITEM_H
+#define NODEEDGEITEM_H
+
+#include <QGraphicsPathItem>
+#include <QPalette>
+
+#include "nodeviewcommon.h"
+#include "node/node.h"
+
+namespace olive {
+
+class NodeViewItem;
+
+/**
+ * @brief A graphical representation of a NodeEdge to be used in NodeView
+ *
+ * A fairly simple line widget use to visualize a connection between two node parameters (a NodeEdge).
+ */
+class NodeViewEdge : public QGraphicsPathItem
+{
+public:
+  NodeViewEdge(Node* output, NodeInput *input, int element,
+               NodeViewItem* from_item, NodeViewItem* to_item,
+               QGraphicsItem* parent = nullptr);
+
+  NodeViewEdge(QGraphicsItem* parent = nullptr);
+
+  Node* output() const
+  {
+    return output_;
+  }
+
+  NodeInput* input() const
+  {
+    return input_;
+  }
+
+  int element() const
+  {
+    return element_;
+  }
+
+  NodeViewItem* from_item() const
+  {
+    return from_item_;
+  }
+
+  NodeViewItem* to_item() const
+  {
+    return to_item_;
+  }
+
+  void Adjust();
+
+  /**
+   * @brief Set the connected state of this line
+   *
+   * When the edge is not connected, it visually depicts this by coloring the line grey. When an edge is connected or
+   * a potential connection is valid, the line is colored white. This function sets whether the line should be grey
+   * (false) or white (true).
+   *
+   * Using SetEdge() automatically sets this to true. Under most circumstances this should be left alone, and only
+   * be set when an edge is being created/dragged.
+   */
+  void SetConnected(bool c);
+
+  /**
+   * @brief Set highlighted state
+   *
+   * Changes color of edge.
+   */
+  void SetHighlighted(bool e);
+
+  /**
+   * @brief Set points to create curve from
+   */
+  void SetPoints(const QPointF& start, const QPointF& end, bool input_is_expanded);
+
+  /**
+   * @brief Sets the direction nodes are flowing
+   */
+  void SetFlowDirection(NodeViewCommon::FlowDirection dir);
+
+  /**
+   * @brief Set whether edges should be drawn as curved or as straight lines
+   */
+  void SetCurved(bool e);
+
+protected:
+  virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = nullptr) override;
+
+private:
+  void Init();
+
+  Node* output_;
+
+  NodeInput* input_;
+
+  int element_;
+
+  NodeViewItem* from_item_;
+
+  NodeViewItem* to_item_;
+
+  int edge_width_;
+
+  bool connected_;
+
+  bool highlighted_;
+
+  NodeViewCommon::FlowDirection flow_dir_;
+
+  bool curved_;
+
+  QPolygonF arrow_;
+
+  int arrow_size_;
+
+};
+
+}
+
+#endif // NODEEDGEITEM_H