lib/cpBaseQtApplication/Pipeline/Canvas.h

   1 #ifndef __cpBaseQtApplication__Pipeline__Canvas__h__
   2 #define __cpBaseQtApplication__Pipeline__Canvas__h__
   3
   4 #include <cpBaseQtApplication_Export.h>
   5 #include <QtGui/QGraphicsView>
   6 #include <cpPlugins/Interface/Workspace.h>
   7
   8 class QGraphicsScene;
   9
  10 namespace cpBaseQtApplication
  11 {
  12   namespace Pipeline
  13   {
  14     // Some other forward declarations
  15     class EventFilter;
  16     class Block;
  17     class Connection;
  18
  19     /**
  20      */
  21     class cpBaseQtApplication_EXPORT Canvas
  22       : public QGraphicsView
  23     {
  24       Q_OBJECT;
  25
  26     public:
  27       typedef Canvas        Self;
  28       typedef QGraphicsView Superclass;
  29       typedef cpPlugins::Interface::Workspace TWorkspace;
  30
  31     public:
  32       Canvas( QWidget* parent = 0 );
  33       virtual ~Canvas( );
  34
  35       void clear( );
  36
  37       TWorkspace* workspace( );
  38       const TWorkspace* workspace( ) const;
  39       void setWorkspace( TWorkspace* ws );
  40
  41       std::string addFilter(
  42         const std::string& cat, const std::string& fil,
  43         const QPointF& pos = QPointF( 0, 0 )
  44         );
  45       bool connectOutputPortSlot( QObject* receiver, const char* slot );
  46
  47       void rename( QGraphicsItem* item );
  48       void exposePort( QGraphicsItem* item );
  49       void moveConnection( const QPointF& pnt );
  50       void grab( const QPointF& pnt );
  51       void release( const QPointF& pnt );
  52
  53     protected:
  54       void keyPressEvent( QKeyEvent* event );
  55       void wheelEvent( QWheelEvent* event );
  56
  57       void dragEnterEvent( QDragEnterEvent* event );
  58       void dragLeaveEvent( QDragLeaveEvent* event );
  59       void dragMoveEvent( QDragMoveEvent* event );
  60       void dropEvent( QDropEvent* event );
  61
  62       void _scaleView( qreal scaleFactor );
  63       void _redrawWorkspace( );
  64
  65     protected:
  66       QGraphicsScene* m_Scene;
  67       EventFilter* m_EventFilter;
  68       TWorkspace*  m_Workspace;
  69       std::map< std::string, Block* > m_Blocks;
  70
  71       Connection* m_ActualConnection;
  72
  73       QObject* m_OutputPortReceiver;
  74       std::string m_OutputPortSlot;
  75     };
  76
  77   } // ecapseman
  78
  79 } // ecapseman
  80
  81 #endif // __cpBaseQtApplication__Pipeline__Canvas__h__
  82
  83 // eof - $RCSfile$