itsmattkc
81c1922911
This makes the node system somewhat more high-level with the intent of making working with them far more flexible and stable. By making the architecture more abstracted, it becomes far less rigid which should allow us to do even more with it and make it much less crash prone.
169 lines
3.9 KiB
C++
169 lines
3.9 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2020 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 NODEVIEW_H
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#define NODEVIEW_H
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#include <QGraphicsView>
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#include <QTimer>
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#include "node/graph.h"
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#include "node/nodecopypaste.h"
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#include "nodeviewedge.h"
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#include "nodeviewscene.h"
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#include "widget/handmovableview/handmovableview.h"
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namespace olive {
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/**
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* @brief A widget for viewing and editing node graphs
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*
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* This widget takes a NodeGraph object and constructs a QGraphicsScene representing its data, viewing and allowing
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* the user to make modifications to it.
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*/
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class NodeView : public HandMovableView, public NodeCopyPasteService
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{
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Q_OBJECT
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public:
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NodeView(QWidget* parent);
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virtual ~NodeView() override;
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/**
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* @brief Sets the graph to view
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*/
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void SetGraph(NodeGraph* graph);
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/**
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* @brief Delete selected nodes from graph (user-friendly/undoable)
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*/
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void DeleteSelected();
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void SelectAll();
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void DeselectAll();
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void Select(QVector<Node *> nodes);
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void SelectWithDependencies(QVector<Node *> nodes);
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void CopySelected(bool cut);
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void Paste();
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void Duplicate();
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void SetColorLabel(int index);
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signals:
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void NodesSelected(const QVector<Node*>& nodes);
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void NodesDeselected(const QVector<Node*>& nodes);
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protected:
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virtual void keyPressEvent(QKeyEvent *event) override;
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virtual void mousePressEvent(QMouseEvent *event) override;
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virtual void mouseMoveEvent(QMouseEvent *event) override;
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virtual void mouseReleaseEvent(QMouseEvent* event) override;
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virtual void wheelEvent(QWheelEvent* event) override;
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private:
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void AttachNodesToCursor(const QVector<Node *> &nodes);
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void AttachItemsToCursor(const QVector<NodeViewItem *> &items);
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void DetachItemsFromCursor();
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void SetFlowDirection(NodeViewCommon::FlowDirection dir);
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void MoveAttachedNodesToCursor(const QPoint &p);
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void ConnectSelectionChangedSignal();
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void DisconnectSelectionChangedSignal();
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NodeGraph* graph_;
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struct AttachedItem {
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NodeViewItem* item;
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QPointF original_pos;
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};
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QList<AttachedItem> attached_items_;
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NodeViewEdge* drop_edge_;
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NodeInput drop_input_;
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NodeViewEdge* create_edge_;
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NodeViewItem* create_edge_src_;
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NodeViewItem* create_edge_dst_;
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NodeInput create_edge_dst_input_;
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bool create_edge_dst_temp_expanded_;
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NodeViewScene scene_;
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QVector<Node*> selected_nodes_;
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QVector<Block*> selected_blocks_;
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enum FilterMode {
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kFilterShowAll,
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kFilterShowSelectedBlocks
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};
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FilterMode filter_mode_;
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double scale_;
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private slots:
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/**
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* @brief Receiver for when the scene's selected items change
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*/
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void UpdateSelectionCache();
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/**
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* @brief Receiver for when the user right clicks (or otherwise requests a context menu)
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*/
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void ShowContextMenu(const QPoint &pos);
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/**
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* @brief Receiver for when the user requests a new node from the add menu
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*/
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void CreateNodeSlot(QAction* action);
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/**
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* @brief Receiver for setting the direction from the context menu
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*/
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void ContextMenuSetDirection(QAction* action);
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/**
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* @brief Receiver for auto-position descendents menu action
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*/
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void AutoPositionDescendents();
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/**
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* @brief Receiver for the user changing the filter
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*/
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void ContextMenuFilterChanged(QAction* action);
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};
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}
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#endif // NODEVIEW_H
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