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/*
Copyright (C) 2015 - 2015 Evan Teran
evan.teran@gmail.com
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 2 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 GRAPH_WIDGET_H_20090903_
#define GRAPH_WIDGET_H_20090903_
#include <QGraphicsView>
#include <graphviz/cgraph.h>
#include <graphviz/gvcext.h>
class GraphNode;
class QContextMenuEvent;
class QGraphicsScene;
class QLabel;
class QMouseEvent;
class QString;
class GraphWidget final : public QGraphicsView {
Q_OBJECT
friend class GraphNode;
friend class GraphEdge;
public:
GraphWidget(QWidget *parent = nullptr);
GraphWidget(const GraphWidget &) = delete;
GraphWidget &operator=(const GraphWidget &) = delete;
~GraphWidget() override;
public:
void clear();
void layout();
public Q_SLOTS:
void setScale(qreal factor);
void setHUDNotification(const QString &s, int duration = 1000);
Q_SIGNALS:
void backgroundContextMenuEvent(QContextMenuEvent *event);
void nodeContextMenuEvent(QContextMenuEvent *event, GraphNode *node);
void nodeDoubleClickEvent(QMouseEvent *event, GraphNode *node);
void zoomEvent(qreal factor, qreal currentScale);
protected:
void keyPressEvent(QKeyEvent *event) override;
void keyReleaseEvent(QKeyEvent *event) override;
void wheelEvent(QWheelEvent *event) override;
void contextMenuEvent(QContextMenuEvent *event) override;
void mouseDoubleClickEvent(QMouseEvent *event) override;
private:
void setGraphAttribute(const QString name, const QString value);
void setNodeAttribute(const QString name, const QString value);
void setEdgeAttribute(const QString name, const QString value);
private:
bool inLayout_ = false;
QLayout *HUDLayout_ = nullptr;
QLabel *HUDLabel_ = nullptr;
GVC_t *context_ = nullptr;
Agraph_t *graph_ = nullptr;
};
#endif
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