TimelineWidget.h

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/*
-----------------------------------------------------------------------------
This source file is part of FRAPPER
research.animationsinstitut.de
sourceforge.net/projects/frapper

Copyright (c) 2008-2009 Filmakademie Baden-Wuerttemberg, Institute of Animation 

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; version 2.1 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
-----------------------------------------------------------------------------
*/


#ifndef TIMELINEWIDGET_H
#define TIMELINEWIDGET_H

#include "GrabberWidget.h"
#include <QtGui/QWidget>
#include <QtGui/QMouseEvent>
#include <QtGui/QScrollArea>
#include <QtGui/QLineEdit>
#include <QtGui/QIntValidator>


namespace Frapper {

class FRAPPER_GUI_EXPORT TimelineWidget : public QWidget
{

    Q_OBJECT

public: // static data

    static const QSize DefaultFrameSize;

public: // constructors and destructors

    TimelineWidget ( QWidget *parent = 0, Qt::WindowFlags flags = 0 );

    virtual ~TimelineWidget ();

public: // functions

    void setCurrentFrame ( int index );

    void setStartFrame ( int index );

    void setEndFrame ( int index );

    void setInFrame ( int index );

    void setOutFrame ( int index );

    int calculateFrameWidth ( bool inToOut = false );

public slots: //

    void setAutoScroll ( bool autoScroll );

    void setFrameWidth ( int frameWidth );

signals: //

    void currentFrameSet ( int index );

    void startFrameSet ( int index );

    void endFrameSet ( int index );

    void inFrameSet ( int index );

    void outFrameSet ( int index );

protected: // event handlers

    virtual void paintEvent ( QPaintEvent *event );

    virtual void keyPressEvent ( QKeyEvent *event );

    virtual void mouseDoubleClickEvent ( QMouseEvent *event );

    virtual void mouseMoveEvent ( QMouseEvent *event );

    virtual void mousePressEvent ( QMouseEvent *event );

    virtual void mouseReleaseEvent ( QMouseEvent *event );

private: // functions

    void updateWidth ();

    void paintImage ( const QRect &rectangle );

    GrabberWidget * grabberAt ( const QPoint &position, bool rangeGrabbersOnly = true );

    void editCurrentFrame ( bool startEditing = true );

private slots: //

    void on_m_currentFrameEdit_returnPressed ();

private: // data

    QImage m_image;

    QScrollArea *m_parentScrollArea;

    GrabberWidget *m_startGrabber;

    GrabberWidget *m_endGrabber;

    GrabberWidget *m_inGrabber;

    GrabberWidget *m_outGrabber;

    GrabberWidget *m_currentGrabber;

    GrabberWidget *m_movedGrabber;

    QLineEdit *m_currentFrameEdit;

    QIntValidator *m_currentFrameValidator;

    bool m_autoScroll;

    int m_frameWidth;

    int m_frameHeight;

    int m_tickStep;

};

} // end namespace Frapper

#endif