lib/cpBaseQtApplication/Pipeline/EventFilter.cxx

   1 #include <cpBaseQtApplication/Pipeline/EventFilter.h>\r
   2 #include <cpBaseQtApplication/Pipeline/Canvas.h>\r
   3 \r
   4 #include <QGraphicsScene>\r
   5 #include <QEvent>\r
   6 #include <QGraphicsItem>\r
   7 #include <QGraphicsSceneContextMenuEvent>\r
   8 #include <QGraphicsSceneDragDropEvent>\r
   9 #include <QGraphicsSceneHelpEvent>\r
  10 #include <QGraphicsSceneHoverEvent>\r
  11 #include <QGraphicsSceneMouseEvent>\r
  12 #include <QGraphicsSceneMoveEvent>\r
  13 #include <QGraphicsSceneResizeEvent>\r
  14 #include <QGraphicsSceneWheelEvent>\r
  15 #include <QGraphicsView>\r
  16 #include <QInputDialog>\r
  17 #include <QMessageBox>\r
  18 \r
  19 // -------------------------------------------------------------------------\r
  20 #define cpBaseQtApplicationPipelineEventFilterCbckSWITCH( E, e )        \\r
  21   case QEvent::GraphicsScene##E:                                        \\r
  22   {                                                                     \\r
  23     QGraphicsScene##E##Event* evt =                                     \\r
  24       dynamic_cast< QGraphicsScene##E##Event* >( e );                   \\r
  25     if( evt != NULL )                                                   \\r
  26       this->_##E##_cbk( evt );                                          \\r
  27   }                                                                     \\r
  28   break;\r
  29 \r
  30 // -------------------------------------------------------------------------\r
  31 #define cpBaseQtApplicationPipelineEventFilterCallbackCODE( E )      \\r
  32   void cpBaseQtApplication::Pipeline::EventFilter::                  \\r
  33   _##E##_cbk( QGraphicsScene##E##Event* evt )\r
  34 \r
  35 // -------------------------------------------------------------------------\r
  36 cpBaseQtApplication::Pipeline::EventFilter::\r
  37 EventFilter( QObject* parent )\r
  38   : Superclass( parent ),\r
  39     m_Scene( NULL ),\r
  40     m_Canvas( NULL )\r
  41 {\r
  42 }\r
  43 \r
  44 // -------------------------------------------------------------------------\r
  45 cpBaseQtApplication::Pipeline::EventFilter::\r
  46 ~EventFilter( )\r
  47 {\r
  48 }\r
  49 \r
  50 // -------------------------------------------------------------------------\r
  51 cpBaseQtApplication::Pipeline::Canvas*\r
  52 cpBaseQtApplication::Pipeline::EventFilter::\r
  53 canvas( )\r
  54 {\r
  55   return( this->m_Canvas );\r
  56 }\r
  57 \r
  58 // -------------------------------------------------------------------------\r
  59 const cpBaseQtApplication::Pipeline::Canvas*\r
  60 cpBaseQtApplication::Pipeline::EventFilter::\r
  61 canvas( ) const\r
  62 {\r
  63   return( this->m_Canvas );\r
  64 }\r
  65 \r
  66 // -------------------------------------------------------------------------\r
  67 void cpBaseQtApplication::Pipeline::EventFilter::\r
  68 setCanvas( cpBaseQtApplication::Pipeline::Canvas* c )\r
  69 {\r
  70   this->m_Canvas = c;\r
  71 }\r
  72 \r
  73 // -------------------------------------------------------------------------\r
  74 void cpBaseQtApplication::Pipeline::EventFilter::\r
  75 install( QGraphicsScene* s )\r
  76 {\r
  77   s->installEventFilter( this );\r
  78   this->m_Scene = s;\r
  79 }\r
  80 \r
  81 // -------------------------------------------------------------------------\r
  82 bool cpBaseQtApplication::Pipeline::EventFilter::\r
  83 eventFilter( QObject* o, QEvent* e )\r
  84 {\r
  85   // Event type\r
  86   switch( int( e->type( ) ) )\r
  87   {\r
  88     cpBaseQtApplicationPipelineEventFilterCbckSWITCH( ContextMenu, e );\r
  89     cpBaseQtApplicationPipelineEventFilterCbckSWITCH( DragEnter, e );\r
  90     cpBaseQtApplicationPipelineEventFilterCbckSWITCH( DragLeave, e );\r
  91     cpBaseQtApplicationPipelineEventFilterCbckSWITCH( DragMove, e );\r
  92     cpBaseQtApplicationPipelineEventFilterCbckSWITCH( Drop, e );\r
  93     cpBaseQtApplicationPipelineEventFilterCbckSWITCH( Help, e );\r
  94     cpBaseQtApplicationPipelineEventFilterCbckSWITCH( HoverEnter, e );\r
  95     cpBaseQtApplicationPipelineEventFilterCbckSWITCH( HoverLeave, e );\r
  96     cpBaseQtApplicationPipelineEventFilterCbckSWITCH( HoverMove, e );\r
  97     cpBaseQtApplicationPipelineEventFilterCbckSWITCH( MouseDoubleClick, e );\r
  98     cpBaseQtApplicationPipelineEventFilterCbckSWITCH( MouseMove, e );\r
  99     cpBaseQtApplicationPipelineEventFilterCbckSWITCH( MousePress, e );\r
 100     cpBaseQtApplicationPipelineEventFilterCbckSWITCH( MouseRelease, e );\r
 101     cpBaseQtApplicationPipelineEventFilterCbckSWITCH( Move, e );\r
 102     cpBaseQtApplicationPipelineEventFilterCbckSWITCH( Resize, e );\r
 103     cpBaseQtApplicationPipelineEventFilterCbckSWITCH( Wheel, e );\r
 104   default:\r
 105     break;\r
 106   } // hctiws\r
 107   return( this->Superclass::eventFilter( o, e ) );\r
 108 }\r
 109 \r
 110 // -------------------------------------------------------------------------\r
 111 QGraphicsItem* cpBaseQtApplication::Pipeline::EventFilter::\r
 112 itemAt( const QPointF& pos )\r
 113 {\r
 114   QList< QGraphicsItem* > items =\r
 115     this->m_Scene->items( QRectF( pos - QPointF( 1, 1 ), QSize( 3, 3 ) ) );\r
 116   QGraphicsItem* ret = NULL;\r
 117   foreach( QGraphicsItem* item, items )\r
 118     if( item->type( ) > QGraphicsItem::UserType )\r
 119       ret = item;\r
 120   return( ret );\r
 121 }\r
 122 \r
 123 // -------------------------------------------------------------------------\r
 124 cpBaseQtApplicationPipelineEventFilterCallbackCODE( ContextMenu )\r
 125 {\r
 126 }\r
 127 \r
 128 // -------------------------------------------------------------------------\r
 129 cpBaseQtApplicationPipelineEventFilterCallbackCODE( DragEnter )\r
 130 {\r
 131 }\r
 132 \r
 133 // -------------------------------------------------------------------------\r
 134 cpBaseQtApplicationPipelineEventFilterCallbackCODE( DragLeave )\r
 135 {\r
 136 }\r
 137 \r
 138 // -------------------------------------------------------------------------\r
 139 cpBaseQtApplicationPipelineEventFilterCallbackCODE( DragMove )\r
 140 {\r
 141 }\r
 142 \r
 143 // -------------------------------------------------------------------------\r
 144 cpBaseQtApplicationPipelineEventFilterCallbackCODE( Drop )\r
 145 {\r
 146 }\r
 147 \r
 148 // -------------------------------------------------------------------------\r
 149 cpBaseQtApplicationPipelineEventFilterCallbackCODE( Help )\r
 150 {\r
 151 }\r
 152 \r
 153 // -------------------------------------------------------------------------\r
 154 cpBaseQtApplicationPipelineEventFilterCallbackCODE( HoverEnter )\r
 155 {\r
 156 }\r
 157 \r
 158 // -------------------------------------------------------------------------\r
 159 cpBaseQtApplicationPipelineEventFilterCallbackCODE( HoverLeave )\r
 160 {\r
 161 }\r
 162 \r
 163 // -------------------------------------------------------------------------\r
 164 cpBaseQtApplicationPipelineEventFilterCallbackCODE( HoverMove )\r
 165 {\r
 166 }\r
 167 \r
 168 // -------------------------------------------------------------------------\r
 169 cpBaseQtApplicationPipelineEventFilterCallbackCODE( MouseDoubleClick )\r
 170 {\r
 171   // Get clicked item\r
 172   QGraphicsItem* item = this->itemAt( evt->scenePos( ) );\r
 173   if( item == NULL )\r
 174     return;\r
 175 \r
 176   if( evt->button( ) == Qt::LeftButton )\r
 177   {\r
 178     if( evt->modifiers( ) == Qt::NoModifier )\r
 179       this->m_Canvas->rename( item );\r
 180     else if( evt->modifiers( ) == Qt::ControlModifier )\r
 181       this->m_Canvas->exposePort( item );\r
 182 \r
 183   } // fi\r
 184 }\r
 185 \r
 186 // -------------------------------------------------------------------------\r
 187 cpBaseQtApplicationPipelineEventFilterCallbackCODE( MouseMove )\r
 188 {\r
 189   this->m_Canvas->moveConnection( evt->scenePos( ) );\r
 190 }\r
 191 \r
 192 // -------------------------------------------------------------------------\r
 193 cpBaseQtApplicationPipelineEventFilterCallbackCODE( MousePress )\r
 194 {\r
 195   switch( evt->button( ) )\r
 196   {\r
 197   case Qt::LeftButton: this->m_Canvas->grab( evt->scenePos( ) ); break;\r
 198   default: break;\r
 199   } // hctiws\r
 200 }\r
 201 \r
 202 // -------------------------------------------------------------------------\r
 203 cpBaseQtApplicationPipelineEventFilterCallbackCODE( MouseRelease )\r
 204 {\r
 205   switch( evt->button( ) )\r
 206   {\r
 207   case Qt::LeftButton: this->m_Canvas->release( evt->scenePos( ) ); break;\r
 208   default: break;\r
 209   } // hctiws\r
 210 }\r
 211 \r
 212 // -------------------------------------------------------------------------\r
 213 cpBaseQtApplicationPipelineEventFilterCallbackCODE( Move )\r
 214 {\r
 215 }\r
 216 \r
 217 // -------------------------------------------------------------------------\r
 218 cpBaseQtApplicationPipelineEventFilterCallbackCODE( Resize )\r
 219 {\r
 220 }\r
 221 \r
 222 // -------------------------------------------------------------------------\r
 223 cpBaseQtApplicationPipelineEventFilterCallbackCODE( Wheel )\r
 224 {\r
 225 }\r
 226 \r
 227 // eof - $RCSfile$\r