itsmattkc
e154b5d5d4
The first in many NodeView improvements. Up until now, nodes have been forcibly auto-arranged, which has worked as a reasonable stop-gap just so that all the nodes are visible during testing/development. However this does not make a good user experience. We move the auto-arrange code to a manual function that can be used when the user or program deems it necessary, and also abstract the node positions so that the view can ultimately determine the exact amount of spacing (useful for changing DPIs) or orientation, so users can direct the flow whichever way they want.
136 lines
3.9 KiB
C++
136 lines
3.9 KiB
C++
/***
|
|
|
|
Olive - Non-Linear Video Editor
|
|
Copyright (C) 2019 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 NODEVIEWSCENE_H
|
|
#define NODEVIEWSCENE_H
|
|
|
|
#include <QGraphicsScene>
|
|
#include <QTimer>
|
|
|
|
#include "node/graph.h"
|
|
#include "nodeviewedge.h"
|
|
#include "nodeviewitem.h"
|
|
|
|
OLIVE_NAMESPACE_ENTER
|
|
|
|
class NodeViewScene : public QGraphicsScene
|
|
{
|
|
Q_OBJECT
|
|
public:
|
|
NodeViewScene(QObject *parent = nullptr);
|
|
|
|
void clear();
|
|
|
|
void SelectAll();
|
|
void DeselectAll();
|
|
|
|
/**
|
|
* @brief Retrieve the graphical widget corresponding to a specific Node
|
|
*
|
|
* In situations where you know what Node you're working with but need the UI object (e.g. for positioning), this
|
|
* static function will retrieve the NodeViewItem (Node UI representation) connected to this Node in a certain
|
|
* QGraphicsScene. This can be called from any other UI object, since it'll have a reference to the QGraphicsScene
|
|
* through QGraphicsItem::scene().
|
|
*
|
|
* If the scene does not contain a widget for this node (usually meaning the node's graph is not the active graph
|
|
* in this view/scene), this function returns nullptr.
|
|
*/
|
|
NodeViewItem* NodeToUIObject(Node* n);
|
|
|
|
/**
|
|
* @brief Retrieve the graphical widget corresponding to a specific NodeEdge
|
|
*
|
|
* Same as NodeToUIObject() but returns a NodeViewEdge corresponding to a NodeEdgePtr instead.
|
|
*/
|
|
NodeViewEdge* EdgeToUIObject(NodeEdgePtr n);
|
|
|
|
void SetGraph(NodeGraph* graph);
|
|
|
|
QList<Node*> GetSelectedNodes() const;
|
|
QList<NodeViewItem*> GetSelectedItems() const;
|
|
|
|
const QHash<Node*, NodeViewItem*>& item_map() const;
|
|
const QHash<NodeEdge*, NodeViewEdge*>& edge_map() const;
|
|
|
|
Qt::Orientation GetFlowOrientation() const;
|
|
|
|
NodeViewCommon::FlowDirection GetFlowDirection() const;
|
|
void SetFlowDirection(NodeViewCommon::FlowDirection direction);
|
|
|
|
/**
|
|
* @brief Automatically reposition the nodes based on their connections
|
|
*/
|
|
void ReorganizeFrom(Node* n);
|
|
|
|
public slots:
|
|
/**
|
|
* @brief Slot when a Node is added to a graph (SetGraph() connects this)
|
|
*
|
|
* This should NEVER be called directly, only connected to a NodeGraph. To add a Node to the NodeGraph
|
|
* use NodeGraph::AddNode().
|
|
*/
|
|
void AddNode(Node* node);
|
|
|
|
/**
|
|
* @brief Slot when a Node is removed from a graph (SetGraph() connects this)
|
|
*
|
|
* This should NEVER be called directly, only connected to a NodeGraph. To remove a Node from the NodeGraph
|
|
* use NodeGraph::RemoveNode().
|
|
*/
|
|
void RemoveNode(Node* node);
|
|
|
|
/**
|
|
* @brief Slot when an edge is added to a graph (SetGraph() connects this)
|
|
*
|
|
* This should NEVER be called directly, only connected to a NodeGraph. To add an edge (i.e. connect two node
|
|
* parameters together), use NodeParam::ConnectEdge().
|
|
*/
|
|
void AddEdge(NodeEdgePtr edge);
|
|
|
|
/**
|
|
* @brief Slot when an edge is removed from a graph (SetGraph() connects this)
|
|
*
|
|
* This should NEVER be called directly, only connected to a NodeGraph. To remove an edge (i.e. disconnect two node
|
|
* parameters), use NodeParam::DisconnectEdge().
|
|
*/
|
|
void RemoveEdge(NodeEdgePtr edge);
|
|
|
|
private:
|
|
QHash<Node*, NodeViewItem*> item_map_;
|
|
|
|
QHash<NodeEdge*, NodeViewEdge*> edge_map_;
|
|
|
|
NodeGraph* graph_;
|
|
|
|
NodeViewCommon::FlowDirection direction_;
|
|
|
|
private slots:
|
|
/**
|
|
* @brief Receiver for whenever a node position changes
|
|
*/
|
|
void NodePositionChanged(const QPointF& pos);
|
|
|
|
|
|
};
|
|
|
|
OLIVE_NAMESPACE_EXIT
|
|
|
|
#endif // NODEVIEWSCENE_H
|