/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

*

* 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,

* see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/".

*

* Description:

*

*/

#ifndef __GINEBRA_CONTENTTOOLBARCHROMEITEM_H

#define __GINEBRA_CONTENTTOOLBARCHROMEITEM_H

#include <QtGui>

#include "Toolbar.h"

#include "ToolbarChromeItem.h"

class QTimeLine;

class QTimer;

namespace GVA {

  class ToolbarFadeAnimator: public QObject

  {

    Q_OBJECT

    public:

      ToolbarFadeAnimator();

      ~ToolbarFadeAnimator();

      void start(bool visible);

      void stop();

    private slots:

      void valueChange(qreal step);

    Q_SIGNALS:

      void updateVisibility(qreal step);

      void finished();

    private:

      QTimeLine *m_timeLine;

  };

  class ContentToolbarChromeItem : public ToolbarChromeItem

  {

    Q_OBJECT

    public:

      ContentToolbarChromeItem(ChromeSnippet* snippet, QGraphicsItem* parent = 0);

      virtual ~ContentToolbarChromeItem();

      virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* opt, QWidget* widget);

      virtual void setSnippet(ChromeSnippet * s);

      void addLinkedChild(ChromeSnippet * s);

      void toggleMiddleSnippet();

      bool autoHideToolbar() { return  m_autoHideToolbar ;}

    protected:

      virtual void resizeEvent(QGraphicsSceneResizeEvent * ev);

      /// Reimplemented to consume the events

      virtual void mousePressEvent( QGraphicsSceneMouseEvent * ev );

      virtual void mouseReleaseEvent( QGraphicsSceneMouseEvent * ev );

    private slots:

      void onChromeComplete();

      void stopInactivityTimer();

      void onLoadFinished(bool);

      void onLoadStarted();

      void resetTimer();

      void onInactivityTimer();

      void onSnippetMouseEvent( QEvent::Type type);

      void onAnimFinished();

      void onUpdateVisibility(qreal);

      void onMVCloseComplete();

    private:

      void addFullBackground();

      void changeState( ContentToolbarState state, bool animate = false);

      void onStateEntry(ContentToolbarState state, bool animate);

      bool mvSnippetVisible();

      void hideLinkedChildren() ;

      // State Enter and Exit functions

      void  stateEnterFull(bool);

      void  stateEnterPartial(bool animate=false);

      void  stateEnterAnimToPartial(bool animate =false);

      void  stateEnterAnimToFull(bool animate =false);

      ToolbarFadeAnimator * m_animator;

      QPainterPath* m_background;

      QTimer* m_inactivityTimer;

      QList <ChromeSnippet *> m_linkedChildren;

      qreal m_bgopacity;

      qreal m_maxOpacity;

      ContentToolbarState m_state;

      bool m_autoHideToolbar;

      ContentToolbarTimerState m_timerState;

  };

} // end of namespace GVA

#endif // __GINEBRA_CONTENTTOOLBARCHROMEITEM_H