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https://github.com/qelectrotech/qelectrotech-source-mirror.git
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fee0c55d9c
This commit try to avoid this crash, but without any certitude because the crash is very difficult to reproduce git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@4959 bfdf4180-ca20-0410-9c96-a3a8aa849046
75 lines
2.9 KiB
C++
75 lines
2.9 KiB
C++
/*
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Copyright 2006-2017 The QElectroTech Team
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This file is part of QElectroTech.
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QElectroTech 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 2 of the License, or
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(at your option) any later version.
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QElectroTech 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 QElectroTech. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef DIAGRAMEVENTINTERFACE_H
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#define DIAGRAMEVENTINTERFACE_H
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#include <QObject>
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class QGraphicsSceneMouseEvent;
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class QGraphicsSceneWheelEvent;
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class QKeyEvent;
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class Diagram;
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/**
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* @brief The DiagramEventInterface class
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* Each method return a bool: True if the methode do something else return false.
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* Each method of DVEventInterface return false;
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* isRunning() return true if action is running (do something). By default return false.
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*
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* ##USE DiagramEventInterface##
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* This class is the basic interface for manage event on a diagram.
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* To create a behavior for event diagram, we need to herite this class.
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* This interface work like this :
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* You need to create an interface and call diagram::setEventInterface(*your_interface).
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* When a diagram get an event (mouse or key) if they have an event interface,
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* they send the event to the interface (for exemple mousePressEvent).
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* If the interface do something with this event, you need to return true to signal the diagram you work with this event.
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* (if you do nothing by defaut the interface return false, so diagram do nothing)
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* When the interface job is done, we need to emit the signal finish(), the diagram use this signal to delete the interface.
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* Be carreful with the destructor, diagram can at any time (even if interface is still running) delete the interface,
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* the bool m_abort is here for that at destruction time.
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*
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*/
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class DiagramEventInterface : public QObject
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{
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Q_OBJECT
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public:
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DiagramEventInterface(Diagram *diagram);
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virtual ~DiagramEventInterface() = 0;
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virtual bool mouseDoubleClickEvent (QGraphicsSceneMouseEvent *event);
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virtual bool mousePressEvent (QGraphicsSceneMouseEvent *event);
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virtual bool mouseMoveEvent (QGraphicsSceneMouseEvent *event);
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virtual bool mouseReleaseEvent (QGraphicsSceneMouseEvent *event);
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virtual bool wheelEvent (QGraphicsSceneWheelEvent *event);
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virtual bool keyPressEvent (QKeyEvent *event);
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virtual bool keyReleaseEvent (QKeyEvent *event);
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virtual bool isRunning () const;
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virtual void init();
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signals:
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void finish(); //Emited when the interface finish is job.
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protected:
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Diagram *m_diagram;
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bool m_running;
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bool m_abort;
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};
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#endif // DIAGRAMEVENTINTERFACE_H
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