lib/cpBaseQtApplication/Canvas.cxx

   1 #include <cpBaseQtApplication/Canvas.h>
   2 #include <cpBaseQtApplication/Editor.h>
   3 #include <cpBaseQtApplication/Block.h>
   4 #include <cpBaseQtApplication/Connection.h>
   5 #include <cpBaseQtApplication/Port.h>
   6
   7 #include <QDragEnterEvent>
   8 #include <QWheelEvent>
   9 #include <QTreeWidget>
  10
  11 // -------------------------------------------------------------------------
  12 cpBaseQtApplication::Canvas::
  13 Canvas( QWidget* parent )
  14   : QGraphicsView( parent )
  15 {
  16   QGraphicsScene* scene = new QGraphicsScene( this );
  17   this->setScene( scene );
  18   this->setRenderHint( QPainter::Antialiasing );
  19   this->setAcceptDrops( true );
  20
  21   this->m_Editor = new Editor( this );
  22   this->m_Editor->install( scene );
  23 }
  24
  25 // -------------------------------------------------------------------------
  26 cpBaseQtApplication::Canvas::
  27 ~Canvas( )
  28 {
  29 }
  30
  31 // -------------------------------------------------------------------------
  32 cpBaseQtApplication::
  33 Editor* cpBaseQtApplication::Canvas::
  34 editor( )
  35 {
  36   return( this->m_Editor );
  37 }
  38
  39 // -------------------------------------------------------------------------
  40 const cpBaseQtApplication::
  41 Editor* cpBaseQtApplication::Canvas::
  42 editor( ) const
  43 {
  44   return( this->m_Editor );
  45 }
  46
  47 // -------------------------------------------------------------------------
  48 void cpBaseQtApplication::Canvas::
  49 keyPressEvent( QKeyEvent* event )
  50 {
  51   static const int del_key = 16777223;
  52
  53   switch( event->key( ) )
  54   {
  55   case del_key:
  56   {
  57     auto _items = this->items( );
  58     auto i = _items.begin( );
  59     while( i != _items.end( ) )
  60     {
  61       if( ( *i )->isSelected( ) )
  62       {
  63         Block* b = dynamic_cast< Block* >( *i );
  64         Connection* c = dynamic_cast< Connection* >( *i );
  65         if( b != NULL )
  66         {
  67           if( this->m_Editor->deleteFilter( b->namePort( ).toStdString( ) ) )
  68             delete b;
  69         }
  70         else if( c != NULL )
  71         {
  72           if(
  73             this->m_Editor->deleteConnection(
  74               c->port1( )->block( )->namePort( ).toStdString( ),
  75               c->port2( )->block( )->namePort( ).toStdString( ),
  76               c->port1( )->name( ).toStdString( ),
  77               c->port2( )->name( ).toStdString( )
  78               )
  79             )
  80             delete c;
  81
  82         } // fi
  83         i = _items.end( );
  84       }
  85       else
  86         i++;
  87
  88     } // elihw
  89   }
  90   break;
  91   default:
  92     break;
  93   } // hctiws
  94   /* TODO
  95      if( event->key( ) == del_key )
  96      {
  97      auto _items = this->items( );
  98      auto i = _items.begin( );
  99      while( i != _items.end( ) )
 100      {
 101      if( ( *i )->isSelected( ) )
 102      {
 103      Block* b = dynamic_cast< Block* >( *i );
 104      Connection* c = dynamic_cast< Connection* >( *i );
 105      if( b != NULL )
 106      {
 107      if( this->m_Editor->deleteFilter( b->namePort( ).toStdString( ) ) )
 108      delete b;
 109      }
 110      else if( c != NULL )
 111      {
 112      if(
 113      this->m_Editor->deleteConnection(
 114      c->port1( )->block( )->namePort( ).toStdString( ),
 115      c->port2( )->block( )->namePort( ).toStdString( ),
 116      c->port1( )->name( ).toStdString( ),
 117      c->port2( )->name( ).toStdString( )
 118      )
 119      )
 120      delete c;
 121
 122      } // fi
 123      i = _items.end( );
 124      }
 125      else
 126      i++;
 127
 128      } // elihw
 129
 130      } // fi
 131   */
 132 }
 133
 134 // -------------------------------------------------------------------------
 135 void cpBaseQtApplication::Canvas::
 136 wheelEvent( QWheelEvent* event )
 137 {
 138   this->_scaleView(
 139     std::pow( double( 2 ), event->delta( ) / double( 240 ) )
 140     );
 141 }
 142
 143 // -------------------------------------------------------------------------
 144 void cpBaseQtApplication::Canvas::
 145 dragEnterEvent( QDragEnterEvent* event )
 146 {
 147   const QMimeData* mime = event->mimeData( );
 148   if( mime->hasFormat( "application/x-qabstractitemmodeldatalist" ) )
 149     event->acceptProposedAction( );
 150 }
 151
 152 // -------------------------------------------------------------------------
 153 void cpBaseQtApplication::Canvas::
 154 dragLeaveEvent( QDragLeaveEvent* event )
 155 {
 156 }
 157
 158 // -------------------------------------------------------------------------
 159 void cpBaseQtApplication::Canvas::
 160 dragMoveEvent( QDragMoveEvent* event )
 161 {
 162 }
 163
 164 // -------------------------------------------------------------------------
 165 void cpBaseQtApplication::Canvas::
 166 dropEvent( QDropEvent* event )
 167 {
 168   const QMimeData* mime = event->mimeData( );
 169   if( !( mime->hasFormat( "application/x-qabstractitemmodeldatalist" ) ) )
 170     return;
 171   event->acceptProposedAction( );
 172   auto tree = dynamic_cast< QTreeWidget* >( event->source( ) );
 173   if( tree == NULL )
 174     return;
 175
 176   QPointF p = this->mapToScene( event->pos( ) );
 177   QList< QTreeWidgetItem* > items = tree->selectedItems( );
 178   for( auto iIt = items.begin( ); iIt != items.end( ); ++iIt )
 179   {
 180     auto parent = ( *iIt )->parent( );
 181     if( parent != NULL )
 182     {
 183       std::string category = parent->text( 0 ).toStdString( );
 184       std::string filter = ( *iIt )->text( 0 ).toStdString( );
 185       this->m_Editor->createFilter( category, filter, p );
 186
 187     } // fi
 188
 189   } // rof
 190 }
 191
 192 // -------------------------------------------------------------------------
 193 void cpBaseQtApplication::Canvas::
 194 _scaleView( qreal scaleFactor )
 195 {
 196   qreal factor = this->transform( ).
 197     scale( scaleFactor, scaleFactor ).
 198     mapRect( QRectF( 0, 0, 1, 1 ) ).
 199     width( );
 200   if( factor < qreal( 0.07 ) || factor > qreal( 100 ) )
 201     return;
 202   this->scale( scaleFactor, scaleFactor );
 203 }
 204
 205 // eof - $RCSfile$