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/*
TikZiT - a GUI diagram editor for TikZ
Copyright (C) 2018 Aleks Kissinger
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 <https://www.gnu.org/licenses/>.
*/
/*!
* Manage the scene, which contains a single Graph, and respond to user input. This serves as
* the controller for the MVC (TikzDocument, TikzView, TikzScene).
*/
#ifndef TIKZSCENE_H
#define TIKZSCENE_H
#include "graph.h"
#include "nodeitem.h"
#include "edgeitem.h"
#include "pathitem.h"
#include "tikzdocument.h"
#include "toolpalette.h"
#include "stylepalette.h"
#include <QWidget>
#include <QGraphicsScene>
#include <QPainter>
#include <QRectF>
#include <QVector>
#include <QGraphicsEllipseItem>
#include <QGraphicsSceneMouseEvent>
class TikzScene : public QGraphicsScene
{
Q_OBJECT
public:
TikzScene(TikzDocument *tikzDocument, ToolPalette *tools, StylePalette *styles, QObject *parent);
~TikzScene() override;
Graph *graph();
QMap<Node*,NodeItem*> &nodeItems();
QMap<Edge*,EdgeItem*> &edgeItems();
QMap<Path*,PathItem*> &pathItems();
void refreshAdjacentEdges(QList<Node*> nodes);
// void setBounds(QRectF bounds);
TikzDocument *tikzDocument() const;
void setTikzDocument(TikzDocument *tikzDocument);
void reloadStyles();
//void refreshSceneBounds();
void applyActiveStyleToNodes();
void applyActiveStyleToEdges();
void deleteSelectedItems();
void copyToClipboard();
void cutToClipboard();
void pasteFromClipboard();
void selectAllNodes();
void deselectAll();
bool parseTikz(QString tikz);
void reflectNodes(bool horizontal);
void rotateNodes(bool clockwise);
bool enabled() const;
void setEnabled(bool enabled);
int lineNumberForSelection();
void extendSelectionUp();
void extendSelectionDown();
void extendSelectionLeft();
void extendSelectionRight();
void mergeNodes();
void reorderSelection(bool toFront);
void reverseSelectedEdges();
void makePath(bool duplicateEdges);
void splitPath();
void getSelection(QSet<Node*> &selNodes, QSet<Edge*> &selEdges) const;
QSet<Node*> getSelectedNodes() const;
void refreshSceneBounds();
bool highlightHeads() const;
bool highlightTails() const;
bool drawNodeLabels() const;
void setDrawNodeLabels(bool drawNodeLabels);
public slots:
void graphReplaced();
void refreshZIndices();
protected:
void mousePressEvent(QGraphicsSceneMouseEvent *event) override;
void mouseMoveEvent(QGraphicsSceneMouseEvent *event) override;
void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;
void keyReleaseEvent(QKeyEvent *event) override;
void keyPressEvent(QKeyEvent *event) override;
void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) override;
private:
TikzDocument *_tikzDocument;
ToolPalette *_tools;
StylePalette *_styles;
QMap<Node*,NodeItem*> _nodeItems;
QMap<Edge*,EdgeItem*> _edgeItems;
QMap<Path*,PathItem*> _pathItems;
QGraphicsLineItem *_drawEdgeItem;
QGraphicsRectItem *_rubberBandItem;
EdgeItem *_modifyEdgeItem;
Edge *_selectingEdge;
NodeItem *_edgeStartNodeItem;
NodeItem *_edgeEndNodeItem;
bool _firstControlPoint;
QPointF _mouseDownPos;
bool _draggingNodes;
bool _drawNodeLabels;
QMap<Node*,QPointF> _oldNodePositions;
qreal _oldWeight;
int _oldBend;
int _oldInAngle;
int _oldOutAngle;
bool _enabled;
bool _highlightHeads;
bool _highlightTails;
bool _smartTool;
bool _ctrlWasPressed;
};
#endif // TIKZSCENE_H
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