TracksView pointer access from a a GraphicsItem.

src/gui/AbstractGraphicsMediaItem.cpp

+/*****************************************************************************
+ * AbstractGraphicsMediaItem.h: Base class for media representation
+ *****************************************************************************
+ * Copyright (C) 2008-2009 the VLMC team
+ *
+ * Authors: Ludovic Fauvet <etix@l0cal.com>
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#include "AbstractGraphicsMediaItem.h"
+
+AbstractGraphicsMediaItem::AbstractGraphicsMediaItem() : m_tracksView( NULL )
+{
+}
+
+TracksView* AbstractGraphicsMediaItem::tracksView()
+{
+    return m_tracksView;
+}

src/gui/AbstractGraphicsMediaItem.h

@@ -25,11 +25,14 @@
 
 #include <QGraphicsItem>
 #include <QUuid>
+#include "TracksView.h"
 
 class AbstractGraphicsMediaItem : public QObject, public QGraphicsItem
 {
     Q_OBJECT
+    friend class TracksView;
 public:
+    AbstractGraphicsMediaItem();
     virtual ~AbstractGraphicsMediaItem() { }
 
     /// The item length can be expanded or shrinked by the user.
@@ -40,6 +43,18 @@ public:
 
     /// Should return the unique uid of the contained media.
     virtual const QUuid& uuid() const = 0;
+
+protected:
+    /**
+     * Returns the current tracksView for the item,
+     * or 0 if the item is not stored in a tracksView.
+     */
+    TracksView* tracksView();
+
+private:
+    /// This pointer will be set when inserted in the tracksView.
+    TracksView* m_tracksView;
+
 };
 
 #endif // ABSTRACTGRAPHICSMEDIAITEM_H

src/gui/GraphicsMovieItem.cpp

@@ -21,8 +21,9 @@
  *****************************************************************************/
 
 #include "GraphicsMovieItem.h"
+#include "TracksView.h"
 
-GraphicsMovieItem::GraphicsMovieItem( Clip* clip ) : m_clip( clip )
+GraphicsMovieItem::GraphicsMovieItem( Clip* clip ) : m_clip( clip ), m_tracksView( NULL )
 {
 
 }
@@ -33,5 +34,6 @@ GraphicsMovieItem::~GraphicsMovieItem()
 
 int GraphicsMovieItem::tracksHeight()
 {
-    //TODO Get this value from the TracksView
+    if ( !m_tracksView ) return 0;
+    return m_tracksView->tracksHeight();
 }

src/gui/GraphicsMovieItem.h

@@ -25,6 +25,7 @@
 
 #include "AbstractGraphicsMediaItem.h"
 #include "Clip.h"
+#include "TracksView.h"
 
 class GraphicsMovieItem : public AbstractGraphicsMediaItem
 {
@@ -42,6 +43,7 @@ protected:
 
 private:
     Clip* m_clip;
+    TracksView* m_tracksView;
 };
 
 #endif // GRAPHICSMOVIEITEM_H

vlmc.pro

@@ -33,7 +33,8 @@ SOURCES += src/main.cpp \
     src/MetaDataManager.cpp \
     src/LibVLCpp/VLCMediaList.cpp \
     src/Library.cpp \
-    src/gui/GraphicsMovieItem.cpp
+    src/gui/GraphicsMovieItem.cpp \
+    src/gui/AbstractGraphicsMediaItem.cpp
 HEADERS += src/gui/MainWindow.h \
     src/gui/DockWidgetManager.h \
     src/gui/LibraryWidget.h \