keyframe.h

/*
 
Pencil2D - Traditional Animation Software
Copyright (C) 2005-2007 Patrick Corrieri & Pascal Naidon
Copyright (C) 2012-2020 Matthew Chiawen Chang
 
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; version 2 of the License.
 
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.
 
*/
 
#ifndef KeyFrame_H
#define KeyFrame_H
 
#include <cstdint>
#include <vector>
#include <memory>
#include <QString>
#include "pencilerror.h"
class KeyFrameEventListener;
 
 
class KeyFrame
{
public:
    explicit KeyFrame();
    explicit KeyFrame(const KeyFrame& k2);
    virtual ~KeyFrame();
 
    KeyFrame& operator=(const KeyFrame& k2);
 
    int  pos() const { return mFrame; }
    void setPos(int position) { mFrame = position; }
 
    int length() const { return mLength; }
    void setLength(int len) { mLength = len; }
 
    void modification() { mIsModified = true; }
    void setModified(bool b) { mIsModified = b; }
    bool isModified() const { return mIsModified; }
 
    QString fileName() const { return mAttachedFileName; }
    void    setFileName(QString strFileName) { mAttachedFileName = strFileName; }
 
    void addEventListener(KeyFrameEventListener*);
    void removeEventListner(KeyFrameEventListener*);
 
    virtual KeyFrame* clone() const { return nullptr; }
    virtual void loadFile() {}
 
    virtual void unloadFile() {}
 
    virtual bool isLoaded() const { return false; }
 
    virtual quint64 memoryUsage() { return 0; }
 
private:
    int mFrame = -1;
    int mLength = 1;
    bool mIsModified = true;
    QString mAttachedFileName;
 
    std::vector<KeyFrameEventListener*> mEventListeners;
};
 
class KeyFrameEventListener
{
public:
    virtual void onKeyFrameDestroy(KeyFrame*) = 0;
};
 
#endif // KeyFrame_H