* Apply Henner Zeller's patch to add connecting line from reference and labels to component position whilst moving to help identify which component the reference or label belongs too

eeschema/sch_field.cpp

@@ -199,6 +199,16 @@ void SCH_FIELD::Draw( EDA_DRAW_PANEL* panel, wxDC* DC,
                      GR_TEXT_HJUSTIFY_CENTER, GR_TEXT_VJUSTIFY_CENTER,
                      LineWidth, m_Italic, m_Bold );
 
+    // While moving: don't loose visual contact to which component this label belongs.
+    if ( IsWireImage() )
+    {
+        const wxPoint origin = parentComponent->GetPosition();
+        textpos  = m_Pos - origin;
+        textpos  = parentComponent->GetScreenCoord( textpos );
+        textpos += parentComponent->GetPosition();
+        GRLine( clipbox, DC, origin.x, origin.y, textpos.x, textpos.y, 2, DARKGRAY );
+    }
+
     /* Enable this to draw the bounding box around the text field to validate
      * the bounding box calculations.
      */

eeschema/schedit.cpp

@@ -653,6 +653,7 @@ static void moveItem( EDA_DRAW_PANEL* aPanel, wxDC* aDC, const wxPoint& aPositio
     item->SetPosition( aPanel->GetParent()->GetCrossHairPosition() );
 
     // Draw the item item at it's new position.
+    item->SetWireImage();  // While moving, the item may choose to render differently
     item->Draw( aPanel, aDC, wxPoint( 0, 0 ), g_XorMode );
 }
 
@@ -697,6 +698,11 @@ static void abortMoveItem( EDA_DRAW_PANEL* aPanel, wxDC* aDC )
         // Never delete existing item, because it can be referenced by an undo/redo command
         // Just restore its data
         currentItem->SwapData( oldItem );
+
+        // Erase the wire representation before the 'normal' view is drawn.
+        if ( item->IsWireImage() )
+          item->Draw( aPanel, aDC, wxPoint( 0, 0 ), g_XorMode );
+
         item->ClearFlags();
     }
 

eeschema/schframe.cpp

@@ -973,6 +973,10 @@ void SCH_EDIT_FRAME::addCurrentItemToList( wxDC* aDC )
         SaveUndoItemInUndoList( undoItem );
     }
 
+    // Erase the wire representation before the 'normal' view is drawn.
+    if ( item->IsWireImage() )
+      item->Draw( m_canvas, aDC, wxPoint( 0, 0 ), g_XorMode );
+
     item->ClearFlags();
     screen->SetModify();
     screen->SetCurItem( NULL );

include/base_struct.h

@@ -298,7 +298,7 @@ public:
 #define IS_RESIZED     (1 << 5)    ///< Item being resized
 #define IS_DRAGGED     (1 << 6)    ///< Item being dragged
 #define IS_DELETED     (1 << 7)
-#define IS_WIRE_IMAGE  (1 << 8)
+#define IS_WIRE_IMAGE  (1 << 8)    ///< Item to be drawn as wireframe while editing
 #define STARTPOINT     (1 << 9)
 #define ENDPOINT       (1 << 10)
 #define SELECTED       (1 << 11)
@@ -389,11 +389,13 @@ public:
     inline bool IsModified() const { return m_Flags & IS_CHANGED; }
     inline bool IsMoving() const { return m_Flags & IS_MOVED; }
     inline bool IsDragging() const { return m_Flags & IS_DRAGGED; }
+    inline bool IsWireImage() const { return m_Flags & IS_WIRE_IMAGE; }
     inline bool IsSelected() const { return m_Flags & SELECTED; }
     inline bool IsResized() const { return m_Flags & IS_RESIZED; }
     inline bool IsHighlighted() const { return m_Flags & HIGHLIGHTED; }
     inline bool IsBrightened() const { return m_Flags & BRIGHTENED; }
 
+    inline void SetWireImage() { SetFlags( IS_WIRE_IMAGE ); }
     inline void SetSelected() { SetFlags( SELECTED ); ViewUpdate( COLOR ); }
     inline void SetHighlighted() { SetFlags( HIGHLIGHTED ); ViewUpdate( COLOR ); }
     inline void SetBrightened() { SetFlags( BRIGHTENED ); }