109 lines
3.3 KiB
C++
109 lines
3.3 KiB
C++
#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 "widget/nodeview/nodeviewedge.h"
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#include "widget/nodeview/nodeviewitem.h"
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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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/**
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* @brief Retrieve the graphical widget corresponding to a specific NodeEdge
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*
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* Same as NodeToUIObject() but returns a NodeViewEdge corresponding to a NodeEdgePtr instead.
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*/
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NodeViewEdge* EdgeToUIObject(NodeEdgePtr n);
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void SetGraph(NodeGraph* graph);
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QList<Node*> GetSelectedNodes() const;
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QList<NodeViewItem*> GetSelectedItems() const;
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const QHash<Node*, NodeViewItem*>& item_map() const;
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const QHash<NodeEdge*, NodeViewEdge*>& edge_map() const;
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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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void 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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/**
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* @brief Slot when an edge 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 an edge (i.e. connect two node
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* parameters together), use NodeParam::ConnectEdge().
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*/
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void AddEdge(NodeEdgePtr edge);
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/**
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* @brief Slot when an edge 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 an edge (i.e. disconnect two node
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* parameters), use NodeParam::DisconnectEdge().
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*/
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void RemoveEdge(NodeEdgePtr edge);
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private:
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void QueueReorganize();
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QList<Node*> GetNodeDirectDescendants(Node* n, const QList<Node*> connected_nodes, QList<Node*>& processed_nodes);
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int FindWeightsInternal(Node* node, QHash<Node*, int>& weights, QList<Node*>& weighted_nodes);
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void ReorganizeInternal(NodeViewItem *src_item, QHash<Node*, int>& weights, QList<Node *> &positioned_nodes);
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QHash<Node*, NodeViewItem*> item_map_;
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QHash<NodeEdge*, NodeViewEdge*> edge_map_;
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QTimer reorganize_timer_;
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NodeGraph* graph_;
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private slots:
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/**
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* @brief Automatically reposition the nodes based on their connections
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*/
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void Reorganize();
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};
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#endif // NODEVIEWSCENE_H
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