1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *

    16 */

    17 

    18 

    19 #ifndef LINEARFLOWSNIPPET_H

    20 #define LINEARFLOWSNIPPET_H

    21 

    22 #include <QTime>

    23 #include <QImage>

    24 #include <QWidget>

    25 #include <QGraphicsWidget>

    26 #include <QGraphicsItem>

    27 

    28 class DragPoint

    29     {

    30     public:

    31         QPoint iPoint;

    32         QTime  iTime;

    33     };

    34 

    35 namespace GVA {

    36 

    37 class Filmstrip;

    38 class FilmstripFlowPrivate;

    39 class FilmstripMovieFactory;

    40 

    41 /*!

    42   Class GraphicsFilmstripFlow

    43  */ 

    44 class LinearFlowSnippet: public QGraphicsWidget

    45 {

    46 Q_OBJECT

    47 friend class Filmstrip;

    48 friend class FilmstripMovieFactory;

    49 

    50 public:

    51     /*!

    52     Creates a new FilmstripFlow widget.

    53     */  

    54     LinearFlowSnippet(QGraphicsWidget* parent = 0);

    55 

    56     /*!

    57     Destroys the widget.

    58     */

    59     ~LinearFlowSnippet();

    60 

    61     /*!

    62     init the FilmstripFlow

    63     */

    64     void init(QString displayMode, QString titleName);

    65 

    66     //! Clear all slides

    67     void clear();

    68     

    69     //! Add a slide to the flow

    70     void addSlide(const QImage& image);

    71 

    72     //! Add a slide to the flow with title

    73     void addSlide(const QImage& image, const QString& title);

    74 

    75     //! Set the center of the flow

    76     void setCenterIndex(int i);

    77 

    78     //! Show the previous item 

    79     void showPrevious();

    80 

    81     //! Show the next item

    82     void showNext();

    83 

    84     //! Returns the total number of slides.

    85     int slideCount() const;

    86 

    87     //! Returns QImage of specified slide.

    88     QImage slide(int) const;

    89 

    90     //! Return the index of the current center slide

    91     int centerIndex() const;

    92 

    93     //! return true if slide animation is ongoing

    94     bool slideAnimationOngoing() const;

    95 

    96     //! return center slide's rect

    97     QRect centralRect() const;

    98 

    99     //! show the ith slide

   100     void showSlide(int) {}

   101 

   102     //! inserts filmstrip at index position i. 

   103     void insert(int i, const QImage& image, const QString& title);

   104 

   105     //! removes filmstrip at index position i.

   106     void removeAt (int i);

   107 

   108     //! set background color

   109     void backgroundColor(const QRgb& c);

   110 

   111     //! handle the display mode change

   112     void displayModeChanged(QString& newMode);

   113 

   114     //! prepare start-animation

   115     void prepareStartAnimation();

   116 

   117     //! run start-animation

   118     void runStartAnimation();

   119     

   120     //! run end-animation

   121     void runEndAnimation();

   122 

   123     bool isFlick();

   124     

   125     QPoint speed();

   126     

   127     QPoint currentPos();

   128     

   129     QPoint previousPos();

   130     

   131     qreal dragTime() const;

   132 

   133     void startFlickScroll();

   134 

   135 signals:

   136     void removed(int index);

   137     void endAnimationCplt();

   138     void centerIndexChanged(int index);

   139     void ok(int index);

   140     void cancel();

   141     void mouseEvent(QEvent::Type type);

   142 protected:

   143     void paint(QPainter * painter, const QStyleOptionGraphicsItem * option, QWidget * widget = 0); 

   144     void resizeEvent(QGraphicsSceneResizeEvent* event); 

   145     void moveEvent(QGraphicsSceneMoveEvent* event);

   146     void mouseMoveEvent(QGraphicsSceneMouseEvent* event);

   147     void mousePressEvent(QGraphicsSceneMouseEvent* event);

   148     void mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event);

   149     void mouseReleaseEvent(QGraphicsSceneMouseEvent* event);

   150 

   151 private slots:

   152     void stopMovie();

   153     void playMovie(int frame);

   154     void closeAnimation();

   155     

   156 private:

   157     void scroll();

   158     void adjustFilmstripSize(QSize& s);

   159     void showInsertOnRight();

   160     void showInsertOnLeft();

   161     bool hitCloseIcon();

   162 

   163 private:

   164     FilmstripFlowPrivate* d;

   165     QList<DragPoint> m_dragPoints;

   166     QTime m_lastMoveEventTime;

   167     bool m_scrolled;

   168     QString m_displayMode;

   169     int m_countFlicks;

   170     QTimer *m_flickTimer;

   171     QString m_titleName;

   172 };

   173 

   174 }

   175 #endif // LINEARFLOWSNIPPET_H

   176