137 lines
3.6 KiB
C++
137 lines
3.6 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2021 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#ifndef NODEVIEWSCENE_H
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#define NODEVIEWSCENE_H
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#include <QGraphicsScene>
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#include <QTimer>
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#include "node/graph.h"
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#include "nodeviewedge.h"
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#include "nodeviewitem.h"
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namespace olive {
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class NodeViewScene : public QGraphicsScene
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{
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Q_OBJECT
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public:
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NodeViewScene(QObject *parent = nullptr);
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void clear();
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void SelectAll();
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void DeselectAll();
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/**
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* @brief Retrieve the graphical widget corresponding to a specific Node
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*
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* In situations where you know what Node you're working with but need the UI object (e.g. for positioning), this
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* static function will retrieve the NodeViewItem (Node UI representation) connected to this Node in a certain
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* QGraphicsScene. This can be called from any other UI object, since it'll have a reference to the QGraphicsScene
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* through QGraphicsItem::scene().
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*
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* If the scene does not contain a widget for this node (usually meaning the node's graph is not the active graph
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* in this view/scene), this function returns nullptr.
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*/
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NodeViewItem* NodeToUIObject(Node* n);
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NodeViewEdge *EdgeToUIObject(Node *output, const NodeInput &input);
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QVector<Node *> GetSelectedNodes() const;
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QVector<NodeViewItem*> GetSelectedItems() const;
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QVector<NodeViewEdge*> GetSelectedEdges() const;
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const QHash<Node*, NodeViewItem*>& item_map() const
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{
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return item_map_;
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}
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const QVector<NodeViewEdge*>& edges() const
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{
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return edges_;
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}
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Qt::Orientation GetFlowOrientation() const;
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NodeViewCommon::FlowDirection GetFlowDirection() const;
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void SetFlowDirection(NodeViewCommon::FlowDirection direction);
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bool GetEdgesAreCurved() const
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{
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return curved_edges_;
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}
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public slots:
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/**
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* @brief Slot when a Node is added to a graph (SetGraph() connects this)
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*
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* This should NEVER be called directly, only connected to a NodeGraph. To add a Node to the NodeGraph
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* use NodeGraph::AddNode().
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*/
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NodeViewItem *AddNode(Node* node);
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/**
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* @brief Slot when a Node is removed from a graph (SetGraph() connects this)
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*
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* This should NEVER be called directly, only connected to a NodeGraph. To remove a Node from the NodeGraph
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* use NodeGraph::RemoveNode().
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*/
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void RemoveNode(Node* node);
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NodeViewEdge *AddEdge(Node *output, const NodeInput& input);
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void RemoveEdge(Node *output, const NodeInput& input);
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/**
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* @brief Set whether edges in this scene should be curved or not
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*/
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void SetEdgesAreCurved(bool curved);
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private:
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static int DetermineWeight(Node* n);
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NodeViewEdge* AddEdgeInternal(Node *output, const NodeInput &input, NodeViewItem* from, NodeViewItem* to);
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void ConnectNode(Node *n);
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void DisconnectNode(Node *n);
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QHash<Node*, NodeViewItem*> item_map_;
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QVector<NodeViewEdge*> edges_;
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NodeGraph* graph_;
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NodeViewCommon::FlowDirection direction_;
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bool curved_edges_;
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private slots:
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/**
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* @brief Receiver for when a node's label has changed
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*/
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void NodeAppearanceChanged();
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};
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}
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#endif // NODEVIEWSCENE_H
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