The slider under the clip preview is seeking while the video plays

src/InputMedia.h

@@ -29,6 +29,7 @@
 #include <QThread>
 
 #include "Media.h"
+#include "VLCMediaPlayer.h"
 
 #include "Image.h"
 
@@ -59,8 +60,13 @@ public:
       * Return the length (duration) of a Media
       */
     qint64                  getLength();
-
+    /**
+      * Return the current time of the media
+      */
     qint64                  getTime();
+    /**
+      * Change the current time of the media
+      */
     void                    setTime( qint64 time );
 
     /**
@@ -72,6 +78,7 @@ public:
     virtual void            pause();
     virtual void            stop();
     void                    setDrawable( WId handle );
+    LibVLCpp::MediaPlayer*  mediaPlayer() { return m_vlcMediaPlayer; }
 
 private:
     QImage*                     m_snapshot;

src/LibVLCpp/VLCMediaPlayer.cpp

@@ -36,6 +36,7 @@ MediaPlayer::MediaPlayer( Media* media, bool playStop /* = true*/ )
 
     // Register the callback
     libvlc_event_attach( p_em, libvlc_MediaPlayerSnapshotTaken, callbacks, this, m_ex );
+    libvlc_event_attach( p_em, libvlc_MediaPlayerTimeChanged, callbacks, this, m_ex );
 }
 
 /**
@@ -62,7 +63,9 @@ void                            MediaPlayer::callbacks( const libvlc_event_t* ev
 //    case libvlc_MediaPlayerBackward:
 //    case libvlc_MediaPlayerEndReached:
 //    case libvlc_MediaPlayerEncounteredError:
-//    case libvlc_MediaPlayerTimeChanged:
+    case libvlc_MediaPlayerTimeChanged:
+        self->emit timeChanged();
+        break;
 //    case libvlc_MediaPlayerPositionChanged:
 //    case libvlc_MediaPlayerSeekableChanged:
 //    case libvlc_MediaPlayerPausableChanged:

src/LibVLCpp/VLCMediaPlayer.h

@@ -59,6 +59,7 @@ namespace   LibVLCpp
 
     signals:
         void                                snapshotTaken();
+        void                                timeChanged();
     };
 }
 

src/gui/PreviewWidget.cpp

@@ -3,7 +3,7 @@
  *****************************************************************************
  * Copyright (C) 2008-2009 the VLMC team
  *
- * Authors: Geoffroy Lacarrire <geoffroylaca@gmail.com>
+ * Authors: Geoffroy Lacarrière <geoffroylaca@gmail.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -79,4 +79,17 @@ void    PreviewWidget::dropEvent( QDropEvent* event )
     m_currentMedia->setupMedia();
     m_currentMedia->setDrawable( m_ui->clipRenderWidget->winId() );
     m_currentMedia->play();
+    connect( m_currentMedia->mediaPlayer(),
+             SIGNAL( timeChanged() ),
+             this,
+             SLOT( videoTimeChanged() ) );
+}
+
+void    PreviewWidget::videoTimeChanged()
+{
+    if ( m_currentMedia )
+    {
+        m_ui->seekSlider->setMaximum( m_currentMedia->getLength() / 1000 );
+        m_ui->seekSlider->setSliderPosition( m_currentMedia->getTime() / 1000 );
+    }
 }

src/gui/PreviewWidget.h

@@ -3,7 +3,7 @@
  *****************************************************************************
  * Copyright (C) 2008-2009 the VLMC team
  *
- * Authors: Geoffroy Lacarrire <geoffroylaca@gmail.com>
+ * Authors: Geoffroy Lacarrière <geoffroylaca@gmail.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -45,6 +45,9 @@ protected:
     virtual void    dragEnterEvent( QDragEnterEvent* event );
     virtual void    dropEvent( QDropEvent* event );
 
+private slots:
+    void            videoTimeChanged();
+
 private:
     Ui::PreviewWidget*      m_ui;
     InputMedia*             m_currentMedia;

src/gui/ui/PreviewWidget.ui

@@ -70,7 +70,7 @@
     </widget>
    </item>
    <item row="1" column="0">
-    <widget class="QSlider" name="horizontalSlider">
+    <widget class="QSlider" name="seekSlider">
      <property name="sizePolicy">
       <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
        <horstretch>0</horstretch>