sch_symbol.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2015 Jean-Pierre Charras, jp.charras at wanadoo.fr
 * Copyright (C) 1992-2024 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * 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, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */
 
#include <sch_edit_frame.h>
#include <widgets/msgpanel.h>
#include <bitmaps.h>
#include <core/mirror.h>
#include <sch_pin.h>
#include <sch_shape.h>
#include <pgm_base.h>
#include <sch_symbol.h>
#include <sch_sheet_path.h>
#include <schematic.h>
#include <sim/sim_model.h>
#include <sim/spice_generator.h>
#include <sim/sim_lib_mgr.h>
#include <trace_helpers.h>
#include <trigo.h>
#include <refdes_utils.h>
#include <wx/log.h>
#include <settings/settings_manager.h>
#include <sch_plotter.h>
#include <string_utils.h>
 
#include <utility>
 
 
std::unordered_map<TRANSFORM, int> SCH_SYMBOL::s_transformToOrientationCache;
 
 
std::string toUTFTildaText( const wxString& txt )
{
 std::string ret = TO_UTF8( txt );
 
 for( char& c : ret )
 {
 if( (unsigned char) c <= ' ' )
 c = '~';
 }
 
 return ret;
}
 
 
static LIB_SYMBOL* dummy()
{
 static LIB_SYMBOL* symbol;
 
 if( !symbol )
 {
 symbol = new LIB_SYMBOL( wxEmptyString );
 
 SCH_SHAPE* square = new SCH_SHAPE( SHAPE_T::RECTANGLE, LAYER_DEVICE );
 
 square->SetPosition( VECTOR2I( schIUScale.MilsToIU( -200 ), schIUScale.MilsToIU( 200 ) ) );
 square->SetEnd( VECTOR2I( schIUScale.MilsToIU( 200 ), schIUScale.MilsToIU( -200 ) ) );
 symbol->AddDrawItem( square );
 
 SCH_TEXT* text = new SCH_TEXT( { 0, 0 }, wxT( "??"), LAYER_DEVICE );
 
 text->SetTextSize( VECTOR2I( schIUScale.MilsToIU( 150 ), schIUScale.MilsToIU( 150 ) ) );
 symbol->AddDrawItem( text );
 }
 
 return symbol;
}
 
 
SCH_SYMBOL::SCH_SYMBOL() :
 SYMBOL( nullptr, SCH_SYMBOL_T )
{
 Init( VECTOR2I( 0, 0 ) );
}
 
 
SCH_SYMBOL::SCH_SYMBOL( const LIB_SYMBOL& aSymbol, const LIB_ID& aLibId,
 const SCH_SHEET_PATH* aSheet, int aUnit, int aBodyStyle,
 const VECTOR2I& aPosition, EDA_ITEM* aParent ) :
 SYMBOL( aParent, SCH_SYMBOL_T )
{
 Init( aPosition );
 
 m_unit = aUnit;
 m_bodyStyle = aBodyStyle;
 m_lib_id = aLibId;
 
 std::unique_ptr< LIB_SYMBOL > part;
 
 part = aSymbol.Flatten();
 part->SetParent();
 SetLibSymbol( part.release() );
 
 // Copy fields from the library symbol
 UpdateFields( aSheet,
 true, /* update style */
 false, /* update ref */
 false, /* update other fields */
 true, /* reset ref */
 true /* reset other fields */ );
 
 m_prefix = UTIL::GetRefDesPrefix( m_part->GetReferenceField().GetText() );
 
 if( aSheet )
 SetRef( aSheet, UTIL::GetRefDesUnannotated( m_prefix ) );
 
 // Inherit the include in bill of materials and board netlist settings from flattened
 // library symbol.
 m_excludedFromSim = m_part->GetExcludedFromSim();
 m_excludedFromBOM = m_part->GetExcludedFromBOM();
 m_excludedFromBoard = m_part->GetExcludedFromBoard();
}
 
 
SCH_SYMBOL::SCH_SYMBOL( const LIB_SYMBOL& aSymbol, const SCH_SHEET_PATH* aSheet,
 const PICKED_SYMBOL& aSel, const VECTOR2I& aPosition, EDA_ITEM* aParent ) :
 SCH_SYMBOL( aSymbol, aSel.LibId, aSheet, aSel.Unit, aSel.Convert, aPosition, aParent )
{
 // Set any fields that were modified as part of the symbol selection
 for( const std::pair<int, wxString>& i : aSel.Fields )
 {
 if( i.first == REFERENCE_FIELD )
 SetRef( aSheet, i.second );
 else if( SCH_FIELD* field = GetFieldById( i.first ) )
 field->SetText( i.second );
 }
}
 
 
SCH_SYMBOL::SCH_SYMBOL( const SCH_SYMBOL& aSymbol ) :
 SYMBOL( aSymbol )
{
 m_parent = aSymbol.m_parent;
 m_pos = aSymbol.m_pos;
 m_unit = aSymbol.m_unit;
 m_bodyStyle = aSymbol.m_bodyStyle;
 m_lib_id = aSymbol.m_lib_id;
 m_isInNetlist = aSymbol.m_isInNetlist;
 m_DNP = aSymbol.m_DNP;
 
 const_cast<KIID&>( m_Uuid ) = aSymbol.m_Uuid;
 
 m_transform = aSymbol.m_transform;
 m_prefix = aSymbol.m_prefix;
 m_instanceReferences = aSymbol.m_instanceReferences;
 m_fields = aSymbol.m_fields;
 
 // Re-parent the fields, which before this had aSymbol as parent
 for( SCH_FIELD& field : m_fields )
 field.SetParent( this );
 
 m_pins.clear();
 
 // Copy (and re-parent) the pins
 for( const std::unique_ptr<SCH_PIN>& pin : aSymbol.m_pins )
 {
 m_pins.emplace_back( std::make_unique<SCH_PIN>( *pin ) );
 m_pins.back()->SetParent( this );
 }
 
 if( aSymbol.m_part )
 SetLibSymbol( new LIB_SYMBOL( *aSymbol.m_part ) );
 
 m_fieldsAutoplaced = aSymbol.m_fieldsAutoplaced;
 m_schLibSymbolName = aSymbol.m_schLibSymbolName;
}
 
 
SCH_SYMBOL::~SCH_SYMBOL()
{
}
 
 
void SCH_SYMBOL::Init( const VECTOR2I& pos )
{
 m_layer = LAYER_DEVICE;
 m_pos = pos;
 m_unit = 1; // In multi unit chip - which unit to draw.
 m_bodyStyle = BODY_STYLE::BASE; // De Morgan Handling
 
 // The rotation/mirror transformation matrix. pos normal
 m_transform = TRANSFORM();
 
 // construct only the mandatory fields, which are the first 4 only.
 for( int i = 0; i < MANDATORY_FIELDS; ++i )
 {
 m_fields.emplace_back( pos, i, this, TEMPLATE_FIELDNAME::GetDefaultFieldName( i ) );
 
 if( i == REFERENCE_FIELD )
 m_fields.back().SetLayer( LAYER_REFERENCEPART );
 else if( i == VALUE_FIELD )
 m_fields.back().SetLayer( LAYER_VALUEPART );
 else
 m_fields.back().SetLayer( LAYER_FIELDS );
 }
 
 m_prefix = wxString( wxT( "U" ) );
 m_isInNetlist = true;
}
 
 
EDA_ITEM* SCH_SYMBOL::Clone() const
{
 return new SCH_SYMBOL( *this );
}
 
 
bool SCH_SYMBOL::IsMissingLibSymbol() const
{
 return m_part == nullptr;
}
 
 
bool SCH_SYMBOL::IsMovableFromAnchorPoint() const
{
 // If a symbol's anchor is not grid-aligned to its pins then moving from the anchor is
 // going to end up moving the symbol's pins off-grid.
 
 // The minimal grid size allowed to place a pin is 25 mils
 const int min_grid_size = schIUScale.MilsToIU( 25 );
 
 for( const std::unique_ptr<SCH_PIN>& pin : m_pins )
 {
 if( ( ( pin->GetPosition().x - m_pos.x ) % min_grid_size ) != 0 )
 return false;
 
 if( ( ( pin->GetPosition().y - m_pos.y ) % min_grid_size ) != 0 )
 return false;
 }
 
 return true;
}
 
 
void SCH_SYMBOL::SetLibId( const LIB_ID& aLibId )
{
 m_lib_id = aLibId;
}
 
 
wxString SCH_SYMBOL::GetSchSymbolLibraryName() const
{
 if( !m_schLibSymbolName.IsEmpty() )
 return m_schLibSymbolName;
 else
 return m_lib_id.Format();
}
 
 
void SCH_SYMBOL::SetLibSymbol( LIB_SYMBOL* aLibSymbol )
{
 wxCHECK2( !aLibSymbol || aLibSymbol->IsRoot(), aLibSymbol = nullptr );
 
 m_part.reset( aLibSymbol );
 UpdatePins();
}
 
 
wxString SCH_SYMBOL::GetDescription() const
{
 if( m_part )
 return m_part->GetDescription();
 
 return wxEmptyString;
}
 
 
wxString SCH_SYMBOL::GetKeyWords() const
{
 if( m_part )
 return m_part->GetKeyWords();
 
 return wxEmptyString;
}
 
 
wxString SCH_SYMBOL::GetDatasheet() const
{
 if( m_part )
 return m_part->GetDatasheetField().GetText();
 
 return wxEmptyString;
}
 
 
void SCH_SYMBOL::UpdatePins()
{
 std::map<wxString, wxString> altPinMap;
 std::map<wxString, std::set<SCH_PIN*>> pinUuidMap;
 std::set<SCH_PIN*> unassignedSchPins;
 std::set<SCH_PIN*> unassignedLibPins;
 
 for( const std::unique_ptr<SCH_PIN>& pin : m_pins )
 {
 pinUuidMap[ pin->GetNumber() ].insert( pin.get() );
 
 unassignedSchPins.insert( pin.get() );
 
 if( !pin->GetAlt().IsEmpty() )
 altPinMap[ pin->GetNumber() ] = pin->GetAlt();
 
 pin->SetLibPin( nullptr );
 }
 
 m_pinMap.clear();
 
 if( !m_part )
 return;
 
 for( SCH_PIN* libPin : m_part->GetAllLibPins() )
 {
 // NW: Don't filter by unit: this data-structure is used for all instances,
 // some of which might have different units.
 if( libPin->GetBodyStyle() && m_bodyStyle && m_bodyStyle != libPin->GetBodyStyle() )
 continue;
 
 SCH_PIN* pin = nullptr;
 
 auto ii = pinUuidMap.find( libPin->GetNumber() );
 
 if( ii == pinUuidMap.end() || ii->second.empty() )
 {
 unassignedLibPins.insert( libPin );
 continue;
 }
 
 auto it = ii->second.begin();
 pin = *it;
 ii->second.erase( it );
 pin->SetLibPin( libPin );
 pin->SetPosition( libPin->GetPosition() );
 
 unassignedSchPins.erase( pin );
 
 auto iii = altPinMap.find( libPin->GetNumber() );
 
 if( iii != altPinMap.end() )
 pin->SetAlt( iii->second );
 
 m_pinMap[ libPin ] = pin;
 }
 
 // Add any pins that were not found in the symbol
 for( SCH_PIN* libPin : unassignedLibPins )
 {
 SCH_PIN* pin = nullptr;
 
 // First try to re-use an existing pin
 if( !unassignedSchPins.empty() )
 {
 auto it = unassignedSchPins.begin();
 pin = *it;
 unassignedSchPins.erase( it );
 }
 else
 {
 // This is a pin that was not found in the symbol, so create a new one.
 pin = m_pins.emplace_back( std::make_unique<SCH_PIN>( SCH_PIN( this, libPin ) ) ).get();
 }
 
 m_pinMap[ libPin ] = pin;
 pin->SetLibPin( libPin );
 pin->SetPosition( libPin->GetPosition() );
 pin->SetNumber( libPin->GetNumber() );
 
 auto iii = altPinMap.find( libPin->GetNumber() );
 
 if( iii != altPinMap.end() )
 pin->SetAlt( iii->second );
 }
 
 // If we have any pins left in the symbol that were not found in the library, remove them.
 for( auto it1 = m_pins.begin(); it1 != m_pins.end() && !unassignedSchPins.empty(); )
 {
 auto it2 = unassignedSchPins.find( it1->get() );
 
 if( it2 != unassignedSchPins.end() )
 {
 it1 = m_pins.erase( it1 );
 unassignedSchPins.erase( it2 );
 }
 else
 {
 ++it1;
 }
 }
 
 // If the symbol is selected, then its pins are selected.
 if( IsSelected() )
 {
 for( std::unique_ptr<SCH_PIN>& pin : m_pins )
 pin->SetSelected();
 }
 
}
 
 
void SCH_SYMBOL::SetBodyStyle( int aBodyStyle )
{
 if( m_bodyStyle != aBodyStyle )
 {
 m_bodyStyle = aBodyStyle;
 
 // The convert may have a different pin layout so the update the pin map.
 UpdatePins();
 }
}
 
 
bool SCH_SYMBOL::HasAlternateBodyStyle() const
{
 if( m_part )
 return m_part->HasAlternateBodyStyle();
 
 return false;
}
 
 
void SCH_SYMBOL::SetTransform( const TRANSFORM& aTransform )
{
 m_transform = aTransform;
}
 
 
int SCH_SYMBOL::GetUnitCount() const
{
 if( m_part )
 return m_part->GetUnitCount();
 
 return 0;
}
 
 
wxString SCH_SYMBOL::GetUnitDisplayName( int aUnit )
{
 wxCHECK( m_part, ( wxString::Format( _( "Unit %s" ), SubReference( aUnit ) ) ) );
 
 return m_part->GetUnitDisplayName( aUnit );
}
 
 
bool SCH_SYMBOL::HasUnitDisplayName( int aUnit )
{
 wxCHECK( m_part, false );
 
 return m_part->HasUnitDisplayName( aUnit );
}
 
 
void SCH_SYMBOL::PrintBackground( const SCH_RENDER_SETTINGS* aSettings, int aUnit, int aBodyStyle,
 const VECTOR2I& aOffset, bool aDimmed )
{
 wxCHECK( m_part, /* void */ );
 
 SCH_RENDER_SETTINGS localRenderSettings( *aSettings );
 localRenderSettings.m_Transform = m_transform;
 localRenderSettings.m_ShowVisibleFields = false;
 localRenderSettings.m_ShowHiddenFields = false;
 
 if( GetDNP() )
 aDimmed = true;
 
 m_part->PrintBackground( &localRenderSettings, m_unit, m_bodyStyle, m_pos + aOffset, aDimmed );
}
 
 
void SCH_SYMBOL::Print( const SCH_RENDER_SETTINGS* aSettings, int aUnit, int aBodyStyle,
 const VECTOR2I& aOffset, bool aForceNoFill, bool aDimmed )
{
 SCH_RENDER_SETTINGS localRenderSettings( *aSettings );
 localRenderSettings.m_Transform = m_transform;
 localRenderSettings.m_ShowVisibleFields = false;
 localRenderSettings.m_ShowHiddenFields = false;
 
 if( m_DNP )
 aDimmed = true;
 
 if( m_part )
 {
 std::vector<SCH_PIN*> libPins = m_part->GetPins( m_unit, m_bodyStyle );
 LIB_SYMBOL tempSymbol( *m_part );
 std::vector<SCH_PIN*> tempPins = tempSymbol.GetPins( m_unit, m_bodyStyle );
 
 // Copy the pin info from the symbol to the temp pins
 for( unsigned i = 0; i < tempPins.size(); ++ i )
 {
 SCH_PIN* symbolPin = GetPin( libPins[ i ] );
 SCH_PIN* tempPin = tempPins[ i ];
 
 tempPin->SetName( symbolPin->GetShownName() );
 tempPin->SetType( symbolPin->GetType() );
 tempPin->SetShape( symbolPin->GetShape() );
 }
 
 for( SCH_ITEM& item : tempSymbol.GetDrawItems() )
 {
 if( EDA_TEXT* text = dynamic_cast<EDA_TEXT*>( &item ) )
 {
 // Use SCH_FIELD's text resolver
 SCH_FIELD dummy( this, -1 );
 dummy.SetText( text->GetText() );
 text->SetText( dummy.GetShownText( false ) );
 }
 }
 
 tempSymbol.Print( &localRenderSettings, m_unit, m_bodyStyle, m_pos + aOffset, false,
 aDimmed );
 }
 else // Use dummy() part if the actual cannot be found.
 {
 dummy()->Print( &localRenderSettings, 0, 0, m_pos + aOffset, aForceNoFill, aDimmed );
 }
 
 for( SCH_FIELD& field : m_fields )
 field.Print( &localRenderSettings, m_unit, m_bodyStyle, aOffset, aForceNoFill, aDimmed );
 
 if( m_DNP )
 {
 BOX2I bbox = GetBodyAndPinsBoundingBox();
 wxDC* DC = localRenderSettings.GetPrintDC();
 COLOR4D dnp_color = localRenderSettings.GetLayerColor( LAYER_DNP_MARKER );
 
 GRFilledSegment( DC, bbox.GetOrigin(), bbox.GetEnd(),
 3.0 * schIUScale.MilsToIU( DEFAULT_LINE_WIDTH_MILS ),
 dnp_color );
 
 GRFilledSegment( DC, bbox.GetOrigin() + VECTOR2I( bbox.GetWidth(), 0 ),
 bbox.GetOrigin() + VECTOR2I( 0, bbox.GetHeight() ),
 3.0 * schIUScale.MilsToIU( DEFAULT_LINE_WIDTH_MILS ),
 dnp_color );
 }
}
 
 
bool SCH_SYMBOL::GetInstance( SCH_SYMBOL_INSTANCE& aInstance,
 const KIID_PATH& aSheetPath, bool aTestFromEnd ) const
{
 for( const SCH_SYMBOL_INSTANCE& instance : m_instanceReferences )
 {
 if( !aTestFromEnd )
 {
 if( instance.m_Path == aSheetPath )
 {
 aInstance = instance;
 return true;
 }
 }
 else if( instance.m_Path.EndsWith( aSheetPath ) )
 {
 aInstance = instance;
 return true;
 }
 }
 
 return false;
}
 
 
void SCH_SYMBOL::RemoveInstance( const SCH_SHEET_PATH& aInstancePath )
{
 RemoveInstance( aInstancePath.Path() );
}
 
 
void SCH_SYMBOL::RemoveInstance( const KIID_PATH& aInstancePath )
{
 // Search for an existing path and remove it if found (should not occur)
 for( unsigned ii = 0; ii < m_instanceReferences.size(); ii++ )
 {
 if( m_instanceReferences[ii].m_Path == aInstancePath )
 {
 wxLogTrace( traceSchSheetPaths, wxS( "Removing symbol instance:\n"
 " sheet path %s\n"
 " reference %s, unit %d from symbol %s." ),
 aInstancePath.AsString(),
 m_instanceReferences[ii].m_Reference,
 m_instanceReferences[ii].m_Unit,
 m_Uuid.AsString() );
 
 m_instanceReferences.erase( m_instanceReferences.begin() + ii );
 ii--;
 }
 }
}
 
 
void SCH_SYMBOL::AddHierarchicalReference( const KIID_PATH& aPath, const wxString& aRef, int aUnit )
{
 // Search for an existing path and remove it if found (should not occur)
 for( unsigned ii = 0; ii < m_instanceReferences.size(); ii++ )
 {
 if( m_instanceReferences[ii].m_Path == aPath )
 {
 wxLogTrace( traceSchSheetPaths, wxS( "Removing symbol instance:\n"
 " sheet path %s\n"
 " reference %s, unit %d from symbol %s." ),
 aPath.AsString(),
 m_instanceReferences[ii].m_Reference,
 m_instanceReferences[ii].m_Unit,
 m_Uuid.AsString() );
 
 m_instanceReferences.erase( m_instanceReferences.begin() + ii );
 ii--;
 }
 }
 
 SCH_SYMBOL_INSTANCE instance;
 instance.m_Path = aPath;
 instance.m_Reference = aRef;
 instance.m_Unit = aUnit;
 
 wxLogTrace( traceSchSheetPaths, wxS( "Adding symbol '%s' instance:\n"
 " sheet path '%s'\n"
 " reference '%s'\n"
 " unit %d\n" ),
 m_Uuid.AsString(),
 aPath.AsString(),
 aRef,
 aUnit );
 
 m_instanceReferences.push_back( instance );
 
 // This should set the default instance to the first saved instance data for each symbol
 // when importing sheets.
 if( m_instanceReferences.size() == 1 )
 {
 m_fields[ REFERENCE_FIELD ].SetText( aRef );
 m_unit = aUnit;
 }
}
 
 
void SCH_SYMBOL::AddHierarchicalReference( const SCH_SYMBOL_INSTANCE& aInstance )
{
 KIID_PATH searchPath( aInstance.m_Path );
 
 std::vector<SCH_SYMBOL_INSTANCE>::iterator resultIt;
 
 do
 {
 resultIt = std::find_if( m_instanceReferences.begin(), m_instanceReferences.end(),
 [searchPath]( const auto& it )
 {
 return it.m_Path == searchPath;
 } );
 
 if( resultIt != m_instanceReferences.end() )
 {
 wxLogTrace( traceSchSheetPaths, wxS( "Removing symbol instance:\n"
 " sheet path %s\n"
 " reference %s, unit %d from symbol %s." ),
 aInstance.m_Path.AsString(),
 resultIt->m_Reference,
 resultIt->m_Unit,
 m_Uuid.AsString() );
 
 // Instance data should be unique by path. Double check just in case there was
 // some buggy code in the past.
 resultIt = m_instanceReferences.erase( resultIt );
 }
 }
 while( resultIt != m_instanceReferences.end() );
 
 SCH_SYMBOL_INSTANCE instance = aInstance;
 
 wxLogTrace( traceSchSheetPaths, wxS( "Adding symbol '%s' instance:\n"
 " sheet path '%s'\n"
 " reference '%s'\n"
 " unit %d\n" ),
 m_Uuid.AsString(),
 instance.m_Path.AsString(),
 instance.m_Reference,
 instance.m_Unit );
 
 m_instanceReferences.push_back( instance );
 
 // This should set the default instance to the first saved instance data for each symbol
 // when importing sheets.
 if( m_instanceReferences.size() == 1 )
 {
 m_fields[ REFERENCE_FIELD ].SetText( instance.m_Reference );
 m_unit = instance.m_Unit;
 }
}
 
 
const wxString SCH_SYMBOL::GetRef( const SCH_SHEET_PATH* sheet, bool aIncludeUnit ) const
{
 KIID_PATH path = sheet->Path();
 wxString ref;
 wxString subRef;
 
 for( const SCH_SYMBOL_INSTANCE& instance : m_instanceReferences )
 {
 if( instance.m_Path == path )
 {
 ref = instance.m_Reference;
 subRef = SubReference( instance.m_Unit );
 break;
 }
 }
 
 // If it was not found in m_Paths array, then see if it is in m_Field[REFERENCE] -- if so,
 // use this as a default for this path. This will happen if we load a version 1 schematic
 // file. It will also mean that multiple instances of the same sheet by default all have
 // the same symbol references, but perhaps this is best.
 if( ref.IsEmpty() && !GetField( REFERENCE_FIELD )->GetText().IsEmpty() )
 ref = GetField( REFERENCE_FIELD )->GetText();
 
 if( ref.IsEmpty() )
 ref = UTIL::GetRefDesUnannotated( m_prefix );
 
 if( aIncludeUnit && GetUnitCount() > 1 )
 ref += subRef;
 
 return ref;
}
 
 
bool SCH_SYMBOL::IsReferenceStringValid( const wxString& aReferenceString )
{
 return !UTIL::GetRefDesPrefix( aReferenceString ).IsEmpty();
}
 
 
void SCH_SYMBOL::SetRef( const SCH_SHEET_PATH* sheet, const wxString& ref )
{
 KIID_PATH path = sheet->Path();
 bool found = false;
 
 // check to see if it is already there before inserting it
 for( SCH_SYMBOL_INSTANCE& instance : m_instanceReferences )
 {
 if( instance.m_Path == path )
 {
 found = true;
 instance.m_Reference = ref;
 break;
 }
 }
 
 if( !found )
 AddHierarchicalReference( path, ref, m_unit );
 
 for( std::unique_ptr<SCH_PIN>& pin : m_pins )
 pin->ClearDefaultNetName( sheet );
 
 if( Schematic() && *sheet == Schematic()->CurrentSheet() )
 m_fields[ REFERENCE_FIELD ].SetText( ref );
 
 // Reinit the m_prefix member if needed
 m_prefix = UTIL::GetRefDesPrefix( ref );
 
 if( m_prefix.IsEmpty() )
 m_prefix = wxT( "U" );
 
 // Power symbols have references starting with # and are not included in netlists
 m_isInNetlist = ! ref.StartsWith( wxT( "#" ) );
}
 
 
bool SCH_SYMBOL::IsAnnotated( const SCH_SHEET_PATH* aSheet ) const
{
 KIID_PATH path = aSheet->Path();
 
 for( const SCH_SYMBOL_INSTANCE& instance : m_instanceReferences )
 {
 if( instance.m_Path == path )
 return instance.m_Reference.Last() != '?';
 }
 
 return false;
}
 
 
void SCH_SYMBOL::UpdatePrefix()
{
 wxString refDesignator = GetField( REFERENCE_FIELD )->GetText();
 
 refDesignator.Replace( "~", " " );
 
 wxString prefix = refDesignator;
 
 while( prefix.Length() )
 {
 wxUniCharRef last = prefix.Last();
 
 if( ( last >= '0' && last <= '9' ) || last == '?' || last == '*' )
 prefix.RemoveLast();
 else
 break;
 }
 
 // Avoid a prefix containing trailing/leading spaces
 prefix.Trim( true );
 prefix.Trim( false );
 
 if( !prefix.IsEmpty() )
 SetPrefix( prefix );
}
 
 
wxString SCH_SYMBOL::SubReference( int aUnit, bool aAddSeparator ) const
{
 if( SCHEMATIC* schematic = Schematic() )
 return schematic->Settings().SubReference( aUnit, aAddSeparator );
 
 return LIB_SYMBOL::LetterSubReference( aUnit, 'A' );
}
 
 
int SCH_SYMBOL::GetUnitSelection( const SCH_SHEET_PATH* aSheet ) const
{
 KIID_PATH path = aSheet->Path();
 
 for( const SCH_SYMBOL_INSTANCE& instance : m_instanceReferences )
 {
 if( instance.m_Path == path )
 return instance.m_Unit;
 }
 
 // If it was not found in m_Paths array, then use m_unit. This will happen if we load a
 // version 1 schematic file.
 return m_unit;
}
 
 
void SCH_SYMBOL::SetUnitSelection( const SCH_SHEET_PATH* aSheet, int aUnitSelection )
{
 KIID_PATH path = aSheet->Path();
 
 // check to see if it is already there before inserting it
 for( SCH_SYMBOL_INSTANCE& instance : m_instanceReferences )
 {
 if( instance.m_Path == path )
 {
 instance.m_Unit = aUnitSelection;
 return;
 }
 }
 
 // didn't find it; better add it
 AddHierarchicalReference( path, UTIL::GetRefDesUnannotated( m_prefix ), aUnitSelection );
}
 
 
void SCH_SYMBOL::SetUnitSelection( int aUnitSelection )
{
 for( SCH_SYMBOL_INSTANCE& instance : m_instanceReferences )
 instance.m_Unit = aUnitSelection;
}
 
 
const wxString SCH_SYMBOL::GetValue( bool aResolve, const SCH_SHEET_PATH* aPath,
 bool aAllowExtraText ) const
{
 if( aResolve )
 return GetField( VALUE_FIELD )->GetShownText( aPath, aAllowExtraText );
 
 return GetField( VALUE_FIELD )->GetText();
}
 
 
void SCH_SYMBOL::SetValueFieldText( const wxString& aValue )
{
 m_fields[ VALUE_FIELD ].SetText( aValue );
}
 
 
const wxString SCH_SYMBOL::GetFootprintFieldText( bool aResolve, const SCH_SHEET_PATH* aPath,
 bool aAllowExtraText ) const
{
 if( aResolve )
 return GetField( FOOTPRINT_FIELD )->GetShownText( aPath, aAllowExtraText );
 
 return GetField( FOOTPRINT_FIELD )->GetText();
}
 
 
void SCH_SYMBOL::SetFootprintFieldText( const wxString& aFootprint )
{
 m_fields[ FOOTPRINT_FIELD ].SetText( aFootprint );
}
 
 
SCH_FIELD* SCH_SYMBOL::GetField( MANDATORY_FIELD_T aFieldType )
{
 return &m_fields[aFieldType];
}
 
 
const SCH_FIELD* SCH_SYMBOL::GetField( MANDATORY_FIELD_T aFieldType ) const
{
 return &m_fields[aFieldType];
}
 
 
SCH_FIELD* SCH_SYMBOL::GetFieldById( int aFieldId )
{
 for( SCH_FIELD& field : m_fields )
 {
 if( field.GetId() == aFieldId )
 return &field;
 }
 
 return nullptr;
}
 
 
SCH_FIELD* SCH_SYMBOL::GetFieldByName( const wxString& aFieldName )
{
 for( SCH_FIELD& field : m_fields )
 {
 if( field.GetName() == aFieldName )
 return &field;
 }
 
 return nullptr;
}
 
 
const SCH_FIELD* SCH_SYMBOL::GetFieldByName( const wxString& aFieldName ) const
{
 for( const SCH_FIELD& field : m_fields )
 {
 if( field.GetName() == aFieldName )
 return &field;
 }
 
 return nullptr;
}
 
 
void SCH_SYMBOL::GetFields( std::vector<SCH_FIELD*>& aVector, bool aVisibleOnly )
{
 for( SCH_FIELD& field : m_fields )
 {
 if( aVisibleOnly )
 {
 if( !field.IsVisible() || field.GetText().IsEmpty() )
 continue;
 }
 
 aVector.push_back( &field );
 }
}
 
 
SCH_FIELD* SCH_SYMBOL::AddField( const SCH_FIELD& aField )
{
 m_fields.push_back( aField );
 return &m_fields.back();
}
 
 
void SCH_SYMBOL::RemoveField( const wxString& aFieldName )
{
 for( unsigned i = MANDATORY_FIELDS; i < m_fields.size(); ++i )
 {
 if( aFieldName == m_fields[i].GetName( false ) )
 {
 m_fields.erase( m_fields.begin() + i );
 return;
 }
 }
}
 
 
SCH_FIELD* SCH_SYMBOL::FindField( const wxString& aFieldName, bool aIncludeDefaultFields,
 bool aCaseInsensitive )
{
 unsigned start = aIncludeDefaultFields ? 0 : MANDATORY_FIELDS;
 
 for( unsigned i = start; i < m_fields.size(); ++i )
 {
 if( aCaseInsensitive )
 {
 if( aFieldName.Upper() == m_fields[i].GetName( false ).Upper() )
 return &m_fields[i];
 }
 else
 {
 if( aFieldName == m_fields[i].GetName( false ) )
 return &m_fields[i];
 }
 }
 
 return nullptr;
}
 
 
void SCH_SYMBOL::UpdateFields( const SCH_SHEET_PATH* aPath, bool aUpdateStyle, bool aUpdateRef,
 bool aUpdateOtherFields, bool aResetRef, bool aResetOtherFields )
{
 if( m_part )
 {
 std::vector<SCH_FIELD*> fields;
 m_part->GetFields( fields );
 
 for( const SCH_FIELD* libField : fields )
 {
 int id = libField->GetId();
 SCH_FIELD* schField;
 
 if( libField->IsMandatory() )
 {
 schField = GetFieldById( id );
 }
 else
 {
 schField = FindField( libField->GetCanonicalName() );
 
 if( !schField )
 {
 wxString fieldName = libField->GetCanonicalName();
 SCH_FIELD newField( VECTOR2I( 0, 0 ), GetFieldCount(), this, fieldName );
 schField = AddField( newField );
 }
 }
 
 if( aUpdateStyle )
 {
 schField->ImportValues( *libField );
 schField->SetTextPos( m_pos + libField->GetTextPos() );
 }
 
 if( id == REFERENCE_FIELD && aPath )
 {
 if( aResetRef )
 SetRef( aPath, m_part->GetReferenceField().GetText() );
 else if( aUpdateRef )
 SetRef( aPath, libField->GetText() );
 }
 else if( id == VALUE_FIELD )
 {
 SetValueFieldText( UnescapeString( libField->GetText() ) );
 }
 else if( id == FOOTPRINT_FIELD )
 {
 if( aResetOtherFields || aUpdateOtherFields )
 SetFootprintFieldText( libField->GetText() );
 }
 else if( id == DATASHEET_FIELD )
 {
 if( aResetOtherFields )
 schField->SetText( GetDatasheet() ); // alias-specific value
 else if( aUpdateOtherFields )
 schField->SetText( libField->GetText() );
 }
 else
 {
 if( aResetOtherFields || aUpdateOtherFields )
 schField->SetText( libField->GetText() );
 }
 }
 }
}
 
 
void SCH_SYMBOL::RunOnChildren( const std::function<void( SCH_ITEM* )>& aFunction )
{
 for( const std::unique_ptr<SCH_PIN>& pin : m_pins )
 aFunction( pin.get() );
 
 for( SCH_FIELD& field : m_fields )
 aFunction( &field );
}
 
 
SCH_PIN* SCH_SYMBOL::GetPin( const wxString& aNumber ) const
{
 for( const std::unique_ptr<SCH_PIN>& pin : m_pins )
 {
 if( pin->GetNumber() == aNumber )
 return pin.get();
 }
 
 return nullptr;
}
 
 
const SCH_PIN* SCH_SYMBOL::GetPin( const VECTOR2I& aPos ) const
{
 for( const std::unique_ptr<SCH_PIN>& pin : m_pins )
 {
 int pin_unit = pin->GetLibPin() ? pin->GetLibPin()->GetUnit()
 : GetUnit();
 int pin_bodyStyle = pin->GetLibPin() ? pin->GetLibPin()->GetBodyStyle()
 : GetBodyStyle();
 
 if( pin_unit > 0 && pin_unit != GetUnit() )
 continue;
 
 if( pin_bodyStyle > 0 && pin_bodyStyle != GetBodyStyle() )
 continue;
 
 if( pin->IsPointClickableAnchor( aPos ) )
 return pin.get();
 }
 
 return nullptr;
}
 
 
std::vector<SCH_PIN*> SCH_SYMBOL::GetLibPins() const
{
 if( m_part )
 return m_part->GetPins( m_unit, m_bodyStyle );
 
 return std::vector<SCH_PIN*>();
}
 
 
std::vector<SCH_PIN*> SCH_SYMBOL::GetAllLibPins() const
{
 if( m_part )
 return m_part->GetAllLibPins();
 
 return std::vector<SCH_PIN*>();
}
 
 
size_t SCH_SYMBOL::GetFullPinCount() const
{
 return m_part ? m_part->GetPinCount() : 0;
}
 
 
SCH_PIN* SCH_SYMBOL::GetPin( SCH_PIN* aLibPin ) const
{
 auto it = m_pinMap.find( aLibPin );
 
 if( it != m_pinMap.end() )
 return it->second;
 
 wxFAIL_MSG_AT( "Pin not found", __FILE__, __LINE__, __FUNCTION__ );
 return nullptr;
}
 
 
std::vector<SCH_PIN*> SCH_SYMBOL::GetPins( const SCH_SHEET_PATH* aSheet ) const
{
 std::vector<SCH_PIN*> pins;
 
 if( aSheet == nullptr )
 {
 wxCHECK_MSG( Schematic(), pins, "Can't call GetPins on a symbol with no schematic" );
 
 aSheet = &Schematic()->CurrentSheet();
 }
 
 int unit = GetUnitSelection( aSheet );
 
 for( const std::unique_ptr<SCH_PIN>& p : m_pins )
 {
 if( unit && p->GetLibPin() && p->GetLibPin()->GetUnit()
 && ( p->GetLibPin()->GetUnit() != unit ) )
 {
 continue;
 }
 
 pins.push_back( p.get() );
 }
 
 return pins;
}
 
 
void SCH_SYMBOL::SwapData( SCH_ITEM* aItem )
{
 SCH_ITEM::SwapFlags( aItem );
 
 wxCHECK_RET( aItem != nullptr && aItem->Type() == SCH_SYMBOL_T,
 wxT( "Cannot swap data with invalid symbol." ) );
 
 SCH_SYMBOL* symbol = static_cast<SCH_SYMBOL*>( aItem );
 
 std::swap( m_lib_id, symbol->m_lib_id );
 
 m_pins.swap( symbol->m_pins ); // std::vector's swap()
 
 for( std::unique_ptr<SCH_PIN>& pin : symbol->m_pins )
 pin->SetParent( symbol );
 
 for( std::unique_ptr<SCH_PIN>& pin : m_pins )
 pin->SetParent( this );
 
 LIB_SYMBOL* libSymbol = symbol->m_part.release();
 symbol->m_part = std::move( m_part );
 symbol->UpdatePins();
 m_part.reset( libSymbol );
 UpdatePins();
 
 std::swap( m_pos, symbol->m_pos );
 std::swap( m_unit, symbol->m_unit );
 std::swap( m_bodyStyle, symbol->m_bodyStyle );
 
 m_fields.swap( symbol->m_fields ); // std::vector's swap()
 
 for( SCH_FIELD& field : symbol->m_fields )
 field.SetParent( symbol );
 
 for( SCH_FIELD& field : m_fields )
 field.SetParent( this );
 
 TRANSFORM tmp = m_transform;
 
 m_transform = symbol->m_transform;
 symbol->m_transform = tmp;
 
 std::swap( m_excludedFromSim, symbol->m_excludedFromSim );
 std::swap( m_excludedFromBOM, symbol->m_excludedFromBOM );
 std::swap( m_DNP, symbol->m_DNP );
 std::swap( m_excludedFromBoard, symbol->m_excludedFromBoard );
 
 std::swap( m_instanceReferences, symbol->m_instanceReferences );
 std::swap( m_schLibSymbolName, symbol->m_schLibSymbolName );
}
 
 
void SCH_SYMBOL::GetContextualTextVars( wxArrayString* aVars ) const
{
 for( int i = 0; i < MANDATORY_FIELDS; ++i )
 aVars->push_back( m_fields[i].GetCanonicalName().Upper() );
 
 for( size_t i = MANDATORY_FIELDS; i < m_fields.size(); ++i )
 aVars->push_back( m_fields[i].GetName() );
 
 aVars->push_back( wxT( "OP" ) );
 aVars->push_back( wxT( "FOOTPRINT_LIBRARY" ) );
 aVars->push_back( wxT( "FOOTPRINT_NAME" ) );
 aVars->push_back( wxT( "UNIT" ) );
 aVars->push_back( wxT( "SYMBOL_LIBRARY" ) );
 aVars->push_back( wxT( "SYMBOL_NAME" ) );
 aVars->push_back( wxT( "SYMBOL_DESCRIPTION" ) );
 aVars->push_back( wxT( "SYMBOL_KEYWORDS" ) );
 aVars->push_back( wxT( "EXCLUDE_FROM_BOM" ) );
 aVars->push_back( wxT( "EXCLUDE_FROM_BOARD" ) );
 aVars->push_back( wxT( "EXCLUDE_FROM_SIM" ) );
 aVars->push_back( wxT( "DNP" ) );
 aVars->push_back( wxT( "SHORT_NET_NAME(<pin_number>)" ) );
 aVars->push_back( wxT( "NET_NAME(<pin_number>)" ) );
 aVars->push_back( wxT( "NET_CLASS(<pin_number>)" ) );
 aVars->push_back( wxT( "PIN_NAME(<pin_number>)" ) );
}
 
 
bool SCH_SYMBOL::ResolveTextVar( const SCH_SHEET_PATH* aPath, wxString* token, int aDepth ) const
{
 static wxRegEx operatingPoint( wxT( "^"
 "OP"
 "(:[^.]*)?" // pin
 "(.([0-9])?([a-zA-Z]*))?" // format
 "$" ) );
 
 wxCHECK( aPath, false );
 
 SCHEMATIC* schematic = Schematic();
 
 if( !schematic )
 return false;
 
 if( operatingPoint.Matches( *token ) )
 {
 wxString pin( operatingPoint.GetMatch( *token, 1 ).Lower() );
 wxString precisionStr( operatingPoint.GetMatch( *token, 3 ) );
 wxString range( operatingPoint.GetMatch( *token, 4 ) );
 int precision = 3;
 
 if( !precisionStr.IsEmpty() )
 precision = precisionStr[0] - '0';
 
 if( range.IsEmpty() )
 range = wxS( "~A" );
 
 SIM_LIB_MGR simLibMgr( &schematic->Prj() );
 NULL_REPORTER devnull;
 SIM_MODEL& model = simLibMgr.CreateModel( aPath, const_cast<SCH_SYMBOL&>( *this ),
 devnull ).model;
 SPICE_ITEM spiceItem;
 spiceItem.refName = GetRef( aPath );
 
 wxString spiceRef = model.SpiceGenerator().ItemName( spiceItem );
 spiceRef = spiceRef.Lower();
 
 if( pin.IsEmpty() )
 {
 *token = schematic->GetOperatingPoint( spiceRef, precision, range );
 return true;
 }
 else if( pin == wxS( ":power" ) )
 {
 if( range.IsEmpty() )
 range = wxS( "~W" );
 
 *token = schematic->GetOperatingPoint( spiceRef + wxS( ":power" ), precision, range );
 return true;
 }
 else
 {
 pin = pin.SubString( 1, -1 ); // Strip ':' from front
 
 for( const std::reference_wrapper<const SIM_MODEL::PIN>& modelPin : model.GetPins() )
 {
 SCH_PIN* symbolPin = GetPin( modelPin.get().symbolPinNumber );
 
 if( pin == symbolPin->GetName().Lower() || pin == symbolPin->GetNumber().Lower() )
 {
 if( model.GetPins().size() == 2 )
 {
 *token = schematic->GetOperatingPoint( spiceRef, precision, range );
 }
 else
 {
 wxString signalName = spiceRef + wxS( ":" ) + modelPin.get().name;
 *token = schematic->GetOperatingPoint( signalName, precision, range );
 }
 
 return true;
 }
 }
 }
 
 *token = wxS( "?" );
 return true;
 }
 
 if( token->Contains( ':' ) )
 {
 if( schematic->ResolveCrossReference( token, aDepth + 1 ) )
 return true;
 }
 
 for( int i = 0; i < MANDATORY_FIELDS; ++i )
 {
 if( token->IsSameAs( m_fields[ i ].GetCanonicalName().Upper() ) )
 {
 if( i == REFERENCE_FIELD )
 *token = GetRef( aPath, true );
 else
 *token = m_fields[ i ].GetShownText( aPath, false, aDepth + 1 );
 
 return true;
 }
 }
 
 for( size_t i = MANDATORY_FIELDS; i < m_fields.size(); ++i )
 {
 if( token->IsSameAs( m_fields[ i ].GetName() )
 || token->IsSameAs( m_fields[ i ].GetName().Upper() ) )
 {
 *token = m_fields[ i ].GetShownText( aPath, false, aDepth + 1 );
 return true;
 }
 }
 
 // Consider missing simulation fields as empty, not un-resolved
 if( token->IsSameAs( wxT( "SIM.DEVICE" ) )
 || token->IsSameAs( wxT( "SIM.TYPE" ) )
 || token->IsSameAs( wxT( "SIM.PINS" ) )
 || token->IsSameAs( wxT( "SIM.PARAMS" ) )
 || token->IsSameAs( wxT( "SIM.LIBRARY" ) )
 || token->IsSameAs( wxT( "SIM.NAME" ) ) )
 {
 *token = wxEmptyString;
 return true;
 }
 
 for( const TEMPLATE_FIELDNAME& templateFieldname :
 schematic->Settings().m_TemplateFieldNames.GetTemplateFieldNames() )
 {
 if( token->IsSameAs( templateFieldname.m_Name )
 || token->IsSameAs( templateFieldname.m_Name.Upper() ) )
 {
 // If we didn't find it in the fields list then it isn't set on this symbol.
 // Just return an empty string.
 *token = wxEmptyString;
 return true;
 }
 }
 
 if( token->IsSameAs( wxT( "FOOTPRINT_LIBRARY" ) ) )
 {
 wxString footprint = GetFootprintFieldText( true, aPath, false );
 
 wxArrayString parts = wxSplit( footprint, ':' );
 
 if( parts.Count() > 0 )
 *token = parts[ 0 ];
 else
 *token = wxEmptyString;
 
 return true;
 }
 else if( token->IsSameAs( wxT( "FOOTPRINT_NAME" ) ) )
 {
 wxString footprint = GetFootprintFieldText( true, aPath, false );
 
 wxArrayString parts = wxSplit( footprint, ':' );
 
 if( parts.Count() > 1 )
 *token = parts[ std::min( 1, (int) parts.size() - 1 ) ];
 else
 *token = wxEmptyString;
 
 return true;
 }
 else if( token->IsSameAs( wxT( "UNIT" ) ) )
 {
 *token = SubReference( GetUnitSelection( aPath ) );
 return true;
 }
 else if( token->IsSameAs( wxT( "SYMBOL_LIBRARY" ) ) )
 {
 *token = m_lib_id.GetUniStringLibNickname();
 return true;
 }
 else if( token->IsSameAs( wxT( "SYMBOL_NAME" ) ) )
 {
 *token = m_lib_id.GetUniStringLibItemName();
 return true;
 }
 else if( token->IsSameAs( wxT( "SYMBOL_DESCRIPTION" ) ) )
 {
 *token = GetDescription();
 return true;
 }
 else if( token->IsSameAs( wxT( "SYMBOL_KEYWORDS" ) ) )
 {
 *token = GetKeyWords();
 return true;
 }
 else if( token->IsSameAs( wxT( "EXCLUDE_FROM_BOM" ) ) )
 {
 *token = this->GetExcludedFromBOM() ? _( "Excluded from BOM" ) : wxString( "" );
 return true;
 }
 else if( token->IsSameAs( wxT( "EXCLUDE_FROM_BOARD" ) ) )
 {
 *token = this->GetExcludedFromBoard() ? _( "Excluded from board" ) : wxString( "" );
 return true;
 }
 else if( token->IsSameAs( wxT( "EXCLUDE_FROM_SIM" ) ) )
 {
 *token = this->GetExcludedFromSim() ? _( "Excluded from simulation" ) : wxString( "" );
 return true;
 }
 else if( token->IsSameAs( wxT( "DNP" ) ) )
 {
 *token = this->GetDNP() ? _( "DNP" ) : wxString( "" );
 return true;
 }
 else if( token->StartsWith( wxT( "SHORT_NET_NAME(" ) )
 || token->StartsWith( wxT( "NET_NAME(" ) )
 || token->StartsWith( wxT( "NET_CLASS(" ) )
 || token->StartsWith( wxT( "PIN_NAME(" ) ) )
 {
 wxString pinNumber = token->AfterFirst( '(' );
 pinNumber = pinNumber.BeforeLast( ')' );
 
 for( SCH_PIN* pin : GetPins( aPath ) )
 {
 if( pin->GetNumber() == pinNumber )
 {
 if( token->StartsWith( wxT( "PIN_NAME" ) ) )
 {
 *token = pin->GetAlt().IsEmpty() ? pin->GetName() : pin->GetAlt();
 return true;
 }
 
 SCH_CONNECTION* conn = pin->Connection( aPath );
 
 if( !conn )
 *token = wxEmptyString;
 else if( token->StartsWith( wxT( "SHORT_NET_NAME" ) ) )
 *token = conn->LocalName();
 else if( token->StartsWith( wxT( "NET_NAME" ) ) )
 *token = conn->Name();
 else if( token->StartsWith( wxT( "NET_CLASS" ) ) )
 *token = pin->GetEffectiveNetClass( aPath )->GetName();
 
 return true;
 }
 }
 }
 
 // See if parent can resolve it (this will recurse to ancestors)
 if( aPath->Last() && aPath->Last()->ResolveTextVar( aPath, token, aDepth + 1 ) )
 return true;
 
 return false;
}
 
 
void SCH_SYMBOL::ClearAnnotation( const SCH_SHEET_PATH* aSheetPath, bool aResetPrefix )
{
 if( aSheetPath )
 {
 KIID_PATH path = aSheetPath->Path();
 
 for( SCH_SYMBOL_INSTANCE& instance : m_instanceReferences )
 {
 if( instance.m_Path == path )
 {
 if( instance.m_Reference.IsEmpty() || aResetPrefix )
 instance.m_Reference = UTIL::GetRefDesUnannotated( m_prefix );
 else
 instance.m_Reference = UTIL::GetRefDesUnannotated( instance.m_Reference );
 }
 }
 }
 else
 {
 for( SCH_SYMBOL_INSTANCE& instance : m_instanceReferences )
 {
 if( instance.m_Reference.IsEmpty() || aResetPrefix)
 instance.m_Reference = UTIL::GetRefDesUnannotated( m_prefix );
 else
 instance.m_Reference = UTIL::GetRefDesUnannotated( instance.m_Reference );
 }
 }
 
 for( std::unique_ptr<SCH_PIN>& pin : m_pins )
 pin->ClearDefaultNetName( aSheetPath );
 
 // These 2 changes do not work in complex hierarchy.
 // When a clear annotation is made, the calling function must call a
 // UpdateAllScreenReferences for the active sheet.
 // But this call cannot made here.
 wxString currentReference = m_fields[REFERENCE_FIELD].GetText();
 
 if( currentReference.IsEmpty() || aResetPrefix )
 m_fields[REFERENCE_FIELD].SetText( UTIL::GetRefDesUnannotated( m_prefix ) );
 else
 m_fields[REFERENCE_FIELD].SetText( UTIL::GetRefDesUnannotated( currentReference ) );
}
 
 
bool SCH_SYMBOL::AddSheetPathReferenceEntryIfMissing( const KIID_PATH& aSheetPath )
{
 // An empty sheet path is illegal, at a minimum the root sheet UUID must be present.
 wxCHECK( aSheetPath.size() > 0, false );
 
 for( const SCH_SYMBOL_INSTANCE& instance : m_instanceReferences )
 {
 // if aSheetPath is found, nothing to do:
 if( instance.m_Path == aSheetPath )
 return false;
 }
 
 // This entry does not exist: add it, with its last-used reference
 AddHierarchicalReference( aSheetPath, m_fields[REFERENCE_FIELD].GetText(), m_unit );
 return true;
}
 
 
void SCH_SYMBOL::SetOrientation( int aOrientation )
{
 TRANSFORM temp = TRANSFORM();
 bool transform = false;
 
 switch( aOrientation )
 {
 case SYM_ORIENT_0:
 case SYM_NORMAL: // default transform matrix
 m_transform = TRANSFORM();
 break;
 
 case SYM_ROTATE_COUNTERCLOCKWISE: // Rotate + (incremental rotation)
 temp.x1 = 0;
 temp.y1 = 1;
 temp.x2 = -1;
 temp.y2 = 0;
 transform = true;
 break;
 
 case SYM_ROTATE_CLOCKWISE: // Rotate - (incremental rotation)
 temp.x1 = 0;
 temp.y1 = -1;
 temp.x2 = 1;
 temp.y2 = 0;
 transform = true;
 break;
 
 case SYM_MIRROR_Y: // Mirror Y (incremental transform)
 temp.x1 = -1;
 temp.y1 = 0;
 temp.x2 = 0;
 temp.y2 = 1;
 transform = true;
 break;
 
 case SYM_MIRROR_X: // Mirror X (incremental transform)
 temp.x1 = 1;
 temp.y1 = 0;
 temp.x2 = 0;
 temp.y2 = -1;
 transform = true;
 break;
 
 case SYM_ORIENT_90:
 SetOrientation( SYM_ORIENT_0 );
 SetOrientation( SYM_ROTATE_COUNTERCLOCKWISE );
 break;
 
 case SYM_ORIENT_180:
 SetOrientation( SYM_ORIENT_0 );
 SetOrientation( SYM_ROTATE_COUNTERCLOCKWISE );
 SetOrientation( SYM_ROTATE_COUNTERCLOCKWISE );
 break;
 
 case SYM_ORIENT_270:
 SetOrientation( SYM_ORIENT_0 );
 SetOrientation( SYM_ROTATE_CLOCKWISE );
 break;
 
 case ( SYM_ORIENT_0 + SYM_MIRROR_X ):
 SetOrientation( SYM_ORIENT_0 );
 SetOrientation( SYM_MIRROR_X );
 break;
 
 case ( SYM_ORIENT_0 + SYM_MIRROR_Y ):
 SetOrientation( SYM_ORIENT_0 );
 SetOrientation( SYM_MIRROR_Y );
 break;
 
 case ( SYM_ORIENT_0 + SYM_MIRROR_X + SYM_MIRROR_Y ):
 SetOrientation( SYM_ORIENT_0 );
 SetOrientation( SYM_MIRROR_X );
 SetOrientation( SYM_MIRROR_Y );
 break;
 
 case ( SYM_ORIENT_90 + SYM_MIRROR_X ):
 SetOrientation( SYM_ORIENT_90 );
 SetOrientation( SYM_MIRROR_X );
 break;
 
 case ( SYM_ORIENT_90 + SYM_MIRROR_Y ):
 SetOrientation( SYM_ORIENT_90 );
 SetOrientation( SYM_MIRROR_Y );
 break;
 
 case ( SYM_ORIENT_90 + SYM_MIRROR_X + SYM_MIRROR_Y ):
 SetOrientation( SYM_ORIENT_90 );
 SetOrientation( SYM_MIRROR_X );
 SetOrientation( SYM_MIRROR_Y );
 break;
 
 case ( SYM_ORIENT_180 + SYM_MIRROR_X ):
 SetOrientation( SYM_ORIENT_180 );
 SetOrientation( SYM_MIRROR_X );
 break;
 
 case ( SYM_ORIENT_180 + SYM_MIRROR_Y ):
 SetOrientation( SYM_ORIENT_180 );
 SetOrientation( SYM_MIRROR_Y );
 break;
 
 case ( SYM_ORIENT_180 + SYM_MIRROR_X + SYM_MIRROR_Y ):
 SetOrientation( SYM_ORIENT_180 );
 SetOrientation( SYM_MIRROR_X );
 SetOrientation( SYM_MIRROR_Y );
 break;
 
 case ( SYM_ORIENT_270 + SYM_MIRROR_X ):
 SetOrientation( SYM_ORIENT_270 );
 SetOrientation( SYM_MIRROR_X );
 break;
 
 case ( SYM_ORIENT_270 + SYM_MIRROR_Y ):
 SetOrientation( SYM_ORIENT_270 );
 SetOrientation( SYM_MIRROR_Y );
 break;
 
 case ( SYM_ORIENT_270 + SYM_MIRROR_X + SYM_MIRROR_Y ):
 SetOrientation( SYM_ORIENT_270 );
 SetOrientation( SYM_MIRROR_X );
 SetOrientation( SYM_MIRROR_Y );
 break;
 
 default:
 transform = false;
 wxFAIL_MSG( "Invalid schematic symbol orientation type." );
 break;
 }
 
 if( transform )
 {
 /* The new matrix transform is the old matrix transform modified by the
 * requested transformation, which is the temp transform (rot,
 * mirror ..) in order to have (in term of matrix transform):
 * transform coord = new_m_transform * coord
 * where transform coord is the coord modified by new_m_transform from
 * the initial value coord.
 * new_m_transform is computed (from old_m_transform and temp) to
 * have:
 * transform coord = old_m_transform * temp
 */
 TRANSFORM newTransform;
 
 newTransform.x1 = m_transform.x1 * temp.x1 + m_transform.x2 * temp.y1;
 newTransform.y1 = m_transform.y1 * temp.x1 + m_transform.y2 * temp.y1;
 newTransform.x2 = m_transform.x1 * temp.x2 + m_transform.x2 * temp.y2;
 newTransform.y2 = m_transform.y1 * temp.x2 + m_transform.y2 * temp.y2;
 m_transform = newTransform;
 }
}
 
 
int SCH_SYMBOL::GetOrientation() const
{
 /*
 * This is slow, but also a bizarre algorithm. I don't feel like unteasing the algorithm right
 * now, so let's just cache it for the moment.
 */
 if( s_transformToOrientationCache.count( m_transform ) )
 return s_transformToOrientationCache.at( m_transform );
 
 int rotate_values[] =
 {
 SYM_ORIENT_0,
 SYM_ORIENT_90,
 SYM_ORIENT_180,
 SYM_ORIENT_270,
 SYM_MIRROR_X + SYM_ORIENT_0,
 SYM_MIRROR_X + SYM_ORIENT_90,
 SYM_MIRROR_X + SYM_ORIENT_270,
 SYM_MIRROR_Y,
 SYM_MIRROR_Y + SYM_ORIENT_0,
 SYM_MIRROR_Y + SYM_ORIENT_90,
 SYM_MIRROR_Y + SYM_ORIENT_180,
 SYM_MIRROR_Y + SYM_ORIENT_270
 };
 
 // Try to find the current transform option:
 TRANSFORM transform = m_transform;
 SCH_SYMBOL temp( *this );
 
 for( int type_rotate : rotate_values )
 {
 temp.SetOrientation( type_rotate );
 
 if( transform == temp.GetTransform() )
 {
 s_transformToOrientationCache[m_transform] = type_rotate;
 return type_rotate;
 }
 }
 
 // Error: orientation not found in list (should not happen)
 wxFAIL_MSG( "Schematic symbol orientation matrix internal error." );
 
 return SYM_NORMAL;
}
 
 
#if defined(DEBUG)
 
void SCH_SYMBOL::Show( int nestLevel, std::ostream& os ) const
{
 // for now, make it look like XML:
 NestedSpace( nestLevel, os ) << '<' << GetClass().Lower().mb_str()
 << " ref=\"" << TO_UTF8( GetField( REFERENCE_FIELD )->GetName() )
 << '"' << " chipName=\""
 << GetLibId().Format().wx_str() << '"' << m_pos
 << " layer=\"" << m_layer
 << '"' << ">\n";
 
 // skip the reference, it's been output already.
 for( int i = 1; i < GetFieldCount(); ++i )
 {
 const wxString& value = GetFields()[i].GetText();
 
 if( !value.IsEmpty() )
 {
 NestedSpace( nestLevel + 1, os ) << "<field" << " name=\""
 << TO_UTF8( GetFields()[i].GetName() )
 << '"' << " value=\""
 << TO_UTF8( value ) << "\"/>\n";
 }
 }
 
 NestedSpace( nestLevel, os ) << "</" << TO_UTF8( GetClass().Lower() ) << ">\n";
}
 
#endif
 
 
BOX2I SCH_SYMBOL::doGetBoundingBox( bool aIncludePins, bool aIncludeFields ) const
{
 BOX2I bBox;
 
 if( m_part )
 bBox = m_part->GetBodyBoundingBox( m_unit, m_bodyStyle, aIncludePins, false );
 else
 bBox = dummy()->GetBodyBoundingBox( m_unit, m_bodyStyle, aIncludePins, false );
 
 bBox = m_transform.TransformCoordinate( bBox );
 bBox.Normalize();
 
 bBox.Offset( m_pos );
 
 if( aIncludeFields )
 {
 for( const SCH_FIELD& field : m_fields )
 {
 if( field.IsVisible() )
 bBox.Merge( field.GetBoundingBox() );
 }
 }
 
 return bBox;
}
 
 
BOX2I SCH_SYMBOL::GetBodyBoundingBox() const
{
 try
 {
 return doGetBoundingBox( false, false );
 }
 catch( const boost::bad_pointer& exc )
 {
 // This may be overkill and could be an assertion but we are more likely to
 // find any boost pointer container errors this way.
 wxLogError( wxT( "Boost bad pointer exception '%s' occurred." ), exc.what() );
 return BOX2I();
 }
}
 
 
BOX2I SCH_SYMBOL::GetBodyAndPinsBoundingBox() const
{
 return doGetBoundingBox( true, false );
}
 
 
const BOX2I SCH_SYMBOL::GetBoundingBox() const
{
 return doGetBoundingBox( true, true );
}
 
 
void SCH_SYMBOL::GetMsgPanelInfo( EDA_DRAW_FRAME* aFrame, std::vector<MSG_PANEL_ITEM>& aList )
{
 wxString msg;
 
 SCH_EDIT_FRAME* schframe = dynamic_cast<SCH_EDIT_FRAME*>( aFrame );
 SCH_SHEET_PATH* currentSheet = schframe ? &schframe->GetCurrentSheet() : nullptr;
 
 auto addExcludes =
 [&]()
 {
 wxArrayString msgs;
 
 if( GetExcludedFromSim() )
 msgs.Add( _( "Simulation" ) );
 
 if( GetExcludedFromBOM() )
 msgs.Add( _( "BOM" ) );
 
 if( GetExcludedFromBoard() )
 msgs.Add( _( "Board" ) );
 
 if( GetDNP() )
 msgs.Add( _( "DNP" ) );
 
 msg = wxJoin( msgs, '|' );
 msg.Replace( '|', wxS( ", " ) );
 
 if( !msg.empty() )
 aList.emplace_back( _( "Exclude from" ), msg );
 };
 
 // part and alias can differ if alias is not the root
 if( m_part )
 {
 if( m_part.get() != dummy() )
 {
 if( m_part->IsPower() )
 {
 // Don't use GetShownText(); we want to see the variable references here
 aList.emplace_back( _( "Power symbol" ),
 KIUI::EllipsizeStatusText( aFrame, GetField( VALUE_FIELD )->GetText() ) );
 }
 else
 {
 aList.emplace_back( _( "Reference" ),
 UnescapeString( GetRef( currentSheet ) ) );
 
 // Don't use GetShownText(); we want to see the variable references here
 aList.emplace_back( _( "Value" ),
 KIUI::EllipsizeStatusText( aFrame, GetField( VALUE_FIELD )->GetText() ) );
 addExcludes();
 aList.emplace_back( _( "Name" ),
 KIUI::EllipsizeStatusText( aFrame, GetLibId().GetLibItemName() ) );
 }
 
#if 0 // Display symbol flags, for debug only
 aList.emplace_back( _( "flags" ), wxString::Format( "%X", GetEditFlags() ) );
#endif
 
 if( !m_part->IsRoot() )
 {
 msg = _( "Missing parent" );
 
 std::shared_ptr< LIB_SYMBOL > parent = m_part->GetParent().lock();
 
 if( parent )
 msg = parent->GetName();
 
 aList.emplace_back( _( "Derived from" ), UnescapeString( msg ) );
 }
 else if( !m_lib_id.GetLibNickname().empty() )
 {
 aList.emplace_back( _( "Library" ), m_lib_id.GetLibNickname() );
 }
 else
 {
 aList.emplace_back( _( "Library" ), _( "Undefined!!!" ) );
 }
 
 // Display the current associated footprint, if exists.
 // Don't use GetShownText(); we want to see the variable references here
 msg = KIUI::EllipsizeStatusText( aFrame, GetField( FOOTPRINT_FIELD )->GetText() );
 
 if( msg.IsEmpty() )
 msg = _( "<Unknown>" );
 
 aList.emplace_back( _( "Footprint" ), msg );
 
 // Display description of the symbol, and keywords found in lib
 aList.emplace_back( _( "Description" ) + wxT( ": " )
 + GetField( DESCRIPTION_FIELD )->GetText(),
 _( "Keywords" ) + wxT( ": " ) + m_part->GetKeyWords() );
 }
 }
 else
 {
 aList.emplace_back( _( "Reference" ), GetRef( currentSheet ) );
 // Don't use GetShownText(); we want to see the variable references here
 aList.emplace_back( _( "Value" ),
 KIUI::EllipsizeStatusText( aFrame, GetField( VALUE_FIELD )->GetText() ) );
 addExcludes();
 aList.emplace_back( _( "Name" ),
 KIUI::EllipsizeStatusText( aFrame, GetLibId().GetLibItemName() ) );
 
 wxString libNickname = GetLibId().GetLibNickname();
 
 if( libNickname.empty() )
 msg = _( "No library defined!" );
 else
 msg.Printf( _( "Symbol not found in %s!" ), libNickname );
 
 aList.emplace_back( _( "Library" ), msg );
 }
}
 
 
BITMAPS SCH_SYMBOL::GetMenuImage() const
{
 return BITMAPS::add_component;
}
 
 
void SCH_SYMBOL::MirrorHorizontally( int aCenter )
{
 int dx = m_pos.x;
 
 SetOrientation( SYM_MIRROR_Y );
 MIRROR( m_pos.x, aCenter );
 dx -= m_pos.x; // dx,0 is the move vector for this transform
 
 for( SCH_FIELD& field : m_fields )
 {
 // Move the fields to the new position because the symbol itself has moved.
 VECTOR2I pos = field.GetTextPos();
 pos.x -= dx;
 field.SetTextPos( pos );
 }
}
 
 
void SCH_SYMBOL::MirrorVertically( int aCenter )
{
 int dy = m_pos.y;
 
 SetOrientation( SYM_MIRROR_X );
 MIRROR( m_pos.y, aCenter );
 dy -= m_pos.y; // 0,dy is the move vector for this transform
 
 for( SCH_FIELD& field : m_fields )
 {
 // Move the fields to the new position because the symbol itself has moved.
 VECTOR2I pos = field.GetTextPos();
 pos.y -= dy;
 field.SetTextPos( pos );
 }
}
 
 
void SCH_SYMBOL::Rotate( const VECTOR2I& aCenter, bool aRotateCCW )
{
 VECTOR2I prev = m_pos;
 
 RotatePoint( m_pos, aCenter, aRotateCCW ? ANGLE_90 : ANGLE_270 );
 
 SetOrientation( aRotateCCW ? SYM_ROTATE_COUNTERCLOCKWISE : SYM_ROTATE_CLOCKWISE );
 
 for( SCH_FIELD& field : m_fields )
 {
 // Move the fields to the new position because the symbol itself has moved.
 VECTOR2I pos = field.GetTextPos();
 pos.x -= prev.x - m_pos.x;
 pos.y -= prev.y - m_pos.y;
 field.SetTextPos( pos );
 }
}
 
 
bool SCH_SYMBOL::Matches( const EDA_SEARCH_DATA& aSearchData, void* aAuxData ) const
{
 // Symbols are searchable via the child field and pin item text.
 return false;
}
 
 
void SCH_SYMBOL::GetEndPoints( std::vector <DANGLING_END_ITEM>& aItemList )
{
 for( std::unique_ptr<SCH_PIN>& pin : m_pins )
 {
 SCH_PIN* lib_pin = pin->GetLibPin();
 
 if( lib_pin && lib_pin->GetUnit() && m_unit && ( m_unit != lib_pin->GetUnit() ) )
 continue;
 
 DANGLING_END_ITEM item( PIN_END, lib_pin, GetPinPhysicalPosition( lib_pin ), this );
 aItemList.push_back( item );
 }
}
 
 
bool SCH_SYMBOL::UpdateDanglingState( std::vector<DANGLING_END_ITEM>& aItemListByType,
 std::vector<DANGLING_END_ITEM>& aItemListByPos,
 const SCH_SHEET_PATH* aPath )
{
 bool changed = false;
 
 for( std::unique_ptr<SCH_PIN>& pin : m_pins )
 {
 bool previousState = pin->IsDangling();
 pin->SetIsDangling( true );
 
 VECTOR2I pos = m_transform.TransformCoordinate( pin->GetLocalPosition() ) + m_pos;
 
 auto lower = DANGLING_END_ITEM_HELPER::get_lower_pos( aItemListByPos, pos );
 bool do_break = false;
 
 for( auto it = lower; it < aItemListByPos.end() && it->GetPosition() == pos; it++ )
 {
 DANGLING_END_ITEM& each_item = *it;
 // Some people like to stack pins on top of each other in a symbol to indicate
 // internal connection. While technically connected, it is not particularly useful
 // to display them that way, so skip any pins that are in the same symbol as this
 // one.
 if( each_item.GetParent() == this )
 continue;
 
 switch( each_item.GetType() )
 {
 case PIN_END:
 case LABEL_END:
 case SHEET_LABEL_END:
 case WIRE_END:
 case NO_CONNECT_END:
 case JUNCTION_END:
 pin->SetIsDangling( false );
 do_break = true;
 break;
 
 default:
 break;
 }
 
 if( do_break )
 break;
 }
 
 changed = ( changed || ( previousState != pin->IsDangling() ) );
 }
 
 return changed;
}
 
 
VECTOR2I SCH_SYMBOL::GetPinPhysicalPosition( const SCH_PIN* Pin ) const
{
 wxCHECK_MSG( Pin != nullptr && Pin->Type() == SCH_PIN_T, VECTOR2I( 0, 0 ),
 wxT( "Cannot get physical position of pin." ) );
 
 return m_transform.TransformCoordinate( Pin->GetPosition() ) + m_pos;
}
 
 
bool SCH_SYMBOL::HasConnectivityChanges( const SCH_ITEM* aItem,
 const SCH_SHEET_PATH* aInstance ) const
{
 // Do not compare to ourself.
 if( aItem == this )
 return false;
 
 const SCH_SYMBOL* symbol = dynamic_cast<const SCH_SYMBOL*>( aItem );
 
 // Don't compare against a different SCH_ITEM.
 wxCHECK( symbol, false );
 
 if( GetPosition() != symbol->GetPosition() )
 return true;
 
 if( GetLibId() != symbol->GetLibId() )
 return true;
 
 if( GetUnitSelection( aInstance ) != symbol->GetUnitSelection( aInstance ) )
 return true;
 
 if( GetRef( aInstance ) != symbol->GetRef( aInstance ) )
 return true;
 
 // Power symbol value field changes are connectivity changes.
 if( IsPower()
 && ( GetValue( true, aInstance, false ) != symbol->GetValue( true, aInstance, false ) ) )
 return true;
 
 if( m_pins.size() != symbol->m_pins.size() )
 return true;
 
 for( size_t i = 0; i < m_pins.size(); i++ )
 {
 if( m_pins[i]->HasConnectivityChanges( symbol->m_pins[i].get() ) )
 return true;
 }
 
 return false;
}
 
 
std::vector<VECTOR2I> SCH_SYMBOL::GetConnectionPoints() const
{
 std::vector<VECTOR2I> retval;
 
 for( const std::unique_ptr<SCH_PIN>& pin : m_pins )
 {
 // Collect only pins attached to the current unit and convert.
 // others are not associated to this symbol instance
 int pin_unit = pin->GetLibPin() ? pin->GetLibPin()->GetUnit()
 : GetUnit();
 int pin_bodyStyle = pin->GetLibPin() ? pin->GetLibPin()->GetBodyStyle()
 : GetBodyStyle();
 
 if( pin_unit > 0 && pin_unit != GetUnit() )
 continue;
 
 if( pin_bodyStyle > 0 && pin_bodyStyle != GetBodyStyle() )
 continue;
 
 retval.push_back( m_transform.TransformCoordinate( pin->GetLocalPosition() ) + m_pos );
 }
 
 return retval;
}
 
 
SCH_ITEM* SCH_SYMBOL::GetDrawItem( const VECTOR2I& aPosition, KICAD_T aType )
{
 if( m_part )
 {
 // Calculate the position relative to the symbol.
 VECTOR2I libPosition = aPosition - m_pos;
 
 return m_part->LocateDrawItem( m_unit, m_bodyStyle, aType, libPosition, m_transform );
 }
 
 return nullptr;
}
 
 
wxString SCH_SYMBOL::GetItemDescription( UNITS_PROVIDER* aUnitsProvider ) const
{
 return wxString::Format( _( "Symbol %s [%s]" ),
 KIUI::EllipsizeMenuText( GetField( REFERENCE_FIELD )->GetText() ),
 KIUI::EllipsizeMenuText( GetLibId().GetLibItemName() ) );
}
 
 
INSPECT_RESULT SCH_SYMBOL::Visit( INSPECTOR aInspector, void* aTestData,
 const std::vector<KICAD_T>& aScanTypes )
{
 for( KICAD_T scanType : aScanTypes )
 {
 if( scanType == SCH_LOCATE_ANY_T
 || ( scanType == SCH_SYMBOL_T )
 || ( scanType == SCH_SYMBOL_LOCATE_POWER_T && m_part && m_part->IsPower() ) )
 {
 if( INSPECT_RESULT::QUIT == aInspector( this, aTestData ) )
 return INSPECT_RESULT::QUIT;
 }
 
 if( scanType == SCH_LOCATE_ANY_T || scanType == SCH_FIELD_T )
 {
 for( SCH_FIELD& field : m_fields )
 {
 if( INSPECT_RESULT::QUIT == aInspector( &field, (void*) this ) )
 return INSPECT_RESULT::QUIT;
 }
 }
 
 if( scanType == SCH_FIELD_LOCATE_REFERENCE_T )
 {
 if( INSPECT_RESULT::QUIT == aInspector( GetField( REFERENCE_FIELD ), (void*) this ) )
 return INSPECT_RESULT::QUIT;
 }
 
 if( scanType == SCH_FIELD_LOCATE_VALUE_T
 || ( scanType == SCH_SYMBOL_LOCATE_POWER_T && m_part && m_part->IsPower() ) )
 {
 if( INSPECT_RESULT::QUIT == aInspector( GetField( VALUE_FIELD ), (void*) this ) )
 return INSPECT_RESULT::QUIT;
 }
 
 if( scanType == SCH_FIELD_LOCATE_FOOTPRINT_T )
 {
 if( INSPECT_RESULT::QUIT == aInspector( GetField( FOOTPRINT_FIELD ), (void*) this ) )
 return INSPECT_RESULT::QUIT;
 }
 
 if( scanType == SCH_FIELD_LOCATE_DATASHEET_T )
 {
 if( INSPECT_RESULT::QUIT == aInspector( GetField( DATASHEET_FIELD ), (void*) this ) )
 return INSPECT_RESULT::QUIT;
 }
 
 if( scanType == SCH_LOCATE_ANY_T || scanType == SCH_PIN_T )
 {
 for( const std::unique_ptr<SCH_PIN>& pin : m_pins )
 {
 // Collect only pins attached to the current unit and convert.
 // others are not associated to this symbol instance
 int pin_unit = pin->GetLibPin() ? pin->GetLibPin()->GetUnit()
 : GetUnit();
 int pin_bodyStyle = pin->GetLibPin() ? pin->GetLibPin()->GetBodyStyle()
 : GetBodyStyle();
 
 if( pin_unit > 0 && pin_unit != GetUnit() )
 continue;
 
 if( pin_bodyStyle > 0 && pin_bodyStyle != GetBodyStyle() )
 continue;
 
 if( INSPECT_RESULT::QUIT == aInspector( pin.get(), (void*) this ) )
 return INSPECT_RESULT::QUIT;
 }
 }
 }
 
 return INSPECT_RESULT::CONTINUE;
}
 
 
bool SCH_SYMBOL::operator <( const SCH_ITEM& aItem ) const
{
 if( Type() != aItem.Type() )
 return Type() < aItem.Type();
 
 const SCH_SYMBOL* symbol = static_cast<const SCH_SYMBOL*>( &aItem );
 
 BOX2I rect = GetBodyAndPinsBoundingBox();
 
 if( rect.GetArea() != symbol->GetBodyAndPinsBoundingBox().GetArea() )
 return rect.GetArea() < symbol->GetBodyAndPinsBoundingBox().GetArea();
 
 if( m_pos.x != symbol->m_pos.x )
 return m_pos.x < symbol->m_pos.x;
 
 if( m_pos.y != symbol->m_pos.y )
 return m_pos.y < symbol->m_pos.y;
 
 return m_Uuid < aItem.m_Uuid; // Ensure deterministic sort
}
 
 
bool SCH_SYMBOL::operator==( const SCH_SYMBOL& aSymbol ) const
{
 if( GetFieldCount() != aSymbol.GetFieldCount() )
 return false;
 
 for( int i = VALUE_FIELD; i < GetFieldCount(); i++ )
 {
 if( GetFields()[i].GetText().Cmp( aSymbol.GetFields()[i].GetText() ) != 0 )
 return false;
 }
 
 return true;
}
 
 
bool SCH_SYMBOL::operator!=( const SCH_SYMBOL& aSymbol ) const
{
 return !( *this == aSymbol );
}
 
 
SCH_SYMBOL& SCH_SYMBOL::operator=( const SCH_SYMBOL& aSymbol )
{
 wxCHECK_MSG( Type() == aSymbol.Type(), *this,
 wxT( "Cannot assign object type " ) + aSymbol.GetClass() + wxT( " to type " ) +
 GetClass() );
 
 if( &aSymbol != this )
 {
 SYMBOL::operator=( aSymbol );
 
 m_lib_id = aSymbol.m_lib_id;
 m_part.reset( aSymbol.m_part ? new LIB_SYMBOL( *aSymbol.m_part ) : nullptr );
 m_pos = aSymbol.m_pos;
 m_unit = aSymbol.m_unit;
 m_bodyStyle = aSymbol.m_bodyStyle;
 m_transform = aSymbol.m_transform;
 
 m_instanceReferences = aSymbol.m_instanceReferences;
 
 m_fields = aSymbol.m_fields; // std::vector's assignment operator
 
 // Reparent fields after assignment to new symbol.
 for( SCH_FIELD& field : m_fields )
 field.SetParent( this );
 
 UpdatePins();
 }
 
 return *this;
}
 
 
bool SCH_SYMBOL::HitTest( const VECTOR2I& aPosition, int aAccuracy ) const
{
 BOX2I bBox = GetBodyBoundingBox();
 bBox.Inflate( aAccuracy / 2 );
 
 if( bBox.Contains( aPosition ) )
 return true;
 
 return false;
}
 
 
bool SCH_SYMBOL::HitTest( const BOX2I& aRect, bool aContained, int aAccuracy ) const
{
 if( m_flags & STRUCT_DELETED || m_flags & SKIP_STRUCT )
 return false;
 
 BOX2I rect = aRect;
 
 rect.Inflate( aAccuracy / 2 );
 
 if( aContained )
 return rect.Contains( GetBodyBoundingBox() );
 
 return rect.Intersects( GetBodyBoundingBox() );
}
 
 
bool SCH_SYMBOL::doIsConnected( const VECTOR2I& aPosition ) const
{
 VECTOR2I new_pos = m_transform.InverseTransform().TransformCoordinate( aPosition - m_pos );
 
 for( const std::unique_ptr<SCH_PIN>& pin : m_pins )
 {
 if( pin->GetType() == ELECTRICAL_PINTYPE::PT_NC )
 continue;
 
 // Collect only pins attached to the current unit and convert.
 // others are not associated to this symbol instance
 int pin_unit = pin->GetLibPin() ? pin->GetLibPin()->GetUnit()
 : GetUnit();
 int pin_bodyStyle = pin->GetLibPin() ? pin->GetLibPin()->GetBodyStyle()
 : GetBodyStyle();
 
 if( pin_unit > 0 && pin_unit != GetUnit() )
 continue;
 
 if( pin_bodyStyle > 0 && pin_bodyStyle != GetBodyStyle() )
 continue;
 
 if( pin->GetLocalPosition() == new_pos )
 return true;
 }
 
 return false;
}
 
 
bool SCH_SYMBOL::IsInNetlist() const
{
 return m_isInNetlist;
}
 
 
void SCH_SYMBOL::Plot( PLOTTER* aPlotter, bool aBackground, const SCH_PLOT_OPTS& aPlotOpts,
 int aUnit, int aBodyStyle, const VECTOR2I& aOffset, bool aDimmed )
{
 if( aBackground )
 return;
 
 if( m_part )
 {
 std::vector<SCH_PIN*> libPins = m_part->GetPins( GetUnit(), GetBodyStyle() );
 
 // Copy the source so we can re-orient and translate it.
 LIB_SYMBOL tempSymbol( *m_part );
 std::vector<SCH_PIN*> tempPins = tempSymbol.GetPins( GetUnit(), GetBodyStyle() );
 
 // Copy the pin info from the symbol to the temp pins
 for( unsigned i = 0; i < tempPins.size(); ++ i )
 {
 SCH_PIN* symbolPin = GetPin( libPins[ i ] );
 SCH_PIN* tempPin = tempPins[ i ];
 
 tempPin->SetName( symbolPin->GetShownName() );
 tempPin->SetType( symbolPin->GetType() );
 tempPin->SetShape( symbolPin->GetShape() );
 
 if( symbolPin->IsDangling() )
 tempPin->SetFlags( IS_DANGLING );
 }
 
 for( SCH_ITEM& item : tempSymbol.GetDrawItems() )
 {
 if( EDA_TEXT* text = dynamic_cast<EDA_TEXT*>( &item ) )
 {
 // Use SCH_FIELD's text resolver
 SCH_FIELD dummy( this, -1 );
 dummy.SetText( text->GetText() );
 text->SetText( dummy.GetShownText( false ) );
 }
 }
 
 SCH_RENDER_SETTINGS* renderSettings = getRenderSettings( aPlotter );
 TRANSFORM savedTransform = renderSettings->m_Transform;
 renderSettings->m_Transform = GetTransform();
 aPlotter->StartBlock( nullptr );
 
 for( bool local_background : { true, false } )
 {
 tempSymbol.Plot( aPlotter, local_background, aPlotOpts, GetUnit(), GetBodyStyle(),
 m_pos, GetDNP() );
 
 for( SCH_FIELD field : m_fields )
 {
 field.ClearRenderCache();
 field.Plot( aPlotter, local_background, aPlotOpts, GetUnit(), GetBodyStyle(),
 m_pos, GetDNP() );
 }
 }
 
 if( m_DNP )
 PlotDNP( aPlotter );
 
 SCH_SHEET_PATH* sheet = &Schematic()->CurrentSheet();
 
 // Plot attributes to a hypertext menu
 if( aPlotOpts.m_PDFPropertyPopups )
 {
 std::vector<wxString> properties;
 
 for( const SCH_FIELD& field : GetFields() )
 {
 wxString text_field = field.GetShownText( sheet, false);
 
 if( text_field.IsEmpty() )
 continue;
 
 properties.emplace_back( wxString::Format( wxT( "!%s = %s" ),
 field.GetName(), text_field ) );
 }
 
 if( !m_part->GetKeyWords().IsEmpty() )
 {
 properties.emplace_back( wxString::Format( wxT( "!%s = %s" ),
 _( "Keywords" ),
 m_part->GetKeyWords() ) );
 }
 
 aPlotter->HyperlinkMenu( GetBoundingBox(), properties );
 }
 
 aPlotter->EndBlock( nullptr );
 renderSettings->m_Transform = savedTransform;
 
 if( !m_part->IsPower() )
 aPlotter->Bookmark( GetBoundingBox(), GetRef( sheet ), _( "Symbols" ) );
 }
}
 
 
void SCH_SYMBOL::PlotDNP( PLOTTER* aPlotter ) const
{
 COLOR_SETTINGS* colors = Pgm().GetSettingsManager().GetColorSettings();
 BOX2I bbox = GetBodyAndPinsBoundingBox();
 int strokeWidth = 3.0 * schIUScale.MilsToIU( DEFAULT_LINE_WIDTH_MILS );
 
 aPlotter->SetColor( colors->GetColor( LAYER_DNP_MARKER ) );
 
 aPlotter->ThickSegment( bbox.GetOrigin(), bbox.GetEnd(), strokeWidth, FILLED, nullptr );
 
 aPlotter->ThickSegment( bbox.GetOrigin() + VECTOR2I( bbox.GetWidth(), 0 ),
 bbox.GetOrigin() + VECTOR2I( 0, bbox.GetHeight() ),
 strokeWidth, FILLED, nullptr );
}
 
 
void SCH_SYMBOL::PlotPins( PLOTTER* aPlotter ) const
{
 if( m_part )
 {
 SCH_RENDER_SETTINGS* renderSettings = getRenderSettings( aPlotter );
 TRANSFORM savedTransform = renderSettings->m_Transform;
 renderSettings->m_Transform = GetTransform();
 
 std::vector<SCH_PIN*> libPins = m_part->GetPins( GetUnit(), GetBodyStyle() );
 
 // Copy the source to stay const
 LIB_SYMBOL tempSymbol( *m_part );
 std::vector<SCH_PIN*> tempPins = tempSymbol.GetPins( GetUnit(), GetBodyStyle() );
 SCH_PLOT_OPTS plotOpts;
 
 // Copy the pin info from the symbol to the temp pins
 for( unsigned i = 0; i < tempPins.size(); ++ i )
 {
 SCH_PIN* symbolPin = GetPin( libPins[ i ] );
 SCH_PIN* tempPin = tempPins[ i ];
 
 tempPin->SetName( symbolPin->GetShownName() );
 tempPin->SetType( symbolPin->GetType() );
 tempPin->SetShape( symbolPin->GetShape() );
 tempPin->Plot( aPlotter, false, plotOpts, GetUnit(), GetBodyStyle(), m_pos, GetDNP() );
 }
 
 renderSettings->m_Transform = savedTransform;
 }
}
 
 
bool SCH_SYMBOL::HasBrightenedPins()
{
 for( const std::unique_ptr<SCH_PIN>& pin : m_pins )
 {
 if( pin->IsBrightened() )
 return true;
 }
 
 return false;
}
 
 
void SCH_SYMBOL::ClearBrightenedPins()
{
 for( std::unique_ptr<SCH_PIN>& pin : m_pins )
 pin->ClearBrightened();
}
 
 
/*
 * When modified at the schematic level, we still store the values of these flags in the
 * associated m_part. If m_part now diverges from other usages, a new derived LIB_SYMBOL
 * will be created and stored locally in the schematic.
 */
bool SCH_SYMBOL::GetShowPinNames() const
{
 wxCHECK( m_part, false );
 return m_part->GetShowPinNames();
}
 
void SCH_SYMBOL::SetShowPinNames( bool aShow )
{
 wxCHECK( m_part, /* void */ );
 m_part->SetShowPinNames( aShow );
}
 
bool SCH_SYMBOL::GetShowPinNumbers() const
{
 wxCHECK( m_part, false );
 return m_part->GetShowPinNumbers();
}
 
void SCH_SYMBOL::SetShowPinNumbers( bool aShow )
{
 wxCHECK( m_part, /* void */ );
 m_part->SetShowPinNumbers( aShow );
}
 
 
bool SCH_SYMBOL::IsPointClickableAnchor( const VECTOR2I& aPos ) const
{
 for( const std::unique_ptr<SCH_PIN>& pin : m_pins )
 {
 int pin_unit = pin->GetLibPin() ? pin->GetLibPin()->GetUnit()
 : GetUnit();
 int pin_bodyStyle = pin->GetLibPin() ? pin->GetLibPin()->GetBodyStyle()
 : GetBodyStyle();
 
 if( pin_unit > 0 && pin_unit != GetUnit() )
 continue;
 
 if( pin_bodyStyle > 0 && pin_bodyStyle != GetBodyStyle() )
 continue;
 
 if( pin->IsPointClickableAnchor( aPos ) )
 return true;
 }
 
 return false;
}
 
 
bool SCH_SYMBOL::IsSymbolLikePowerGlobalLabel() const
{
 // return true if the symbol is equivalent to a global label:
 // It is a Power symbol
 // It has only one pin type Power input
 
 if( !GetLibSymbolRef() || !GetLibSymbolRef()->IsPower() )
 return false;
 
 std::vector<SCH_PIN*> pin_list = GetAllLibPins();
 
 if( pin_list.size() != 1 )
 return false;
 
 return pin_list[0]->GetType() == ELECTRICAL_PINTYPE::PT_POWER_IN;
}
 
 
bool SCH_SYMBOL::IsPower() const
{
 wxCHECK( m_part, false );
 
 return m_part->IsPower();
}
 
 
bool SCH_SYMBOL::IsNormal() const
{
 wxCHECK( m_part, false );
 
 return m_part->IsNormal();
}
 
 
bool SCH_SYMBOL::operator==( const SCH_ITEM& aOther ) const
{
 if( Type() != aOther.Type() )
 return false;
 
 const SCH_SYMBOL& symbol = static_cast<const SCH_SYMBOL&>( aOther );
 
 if( GetLibId() != symbol.GetLibId() )
 return false;
 
 if( GetPosition() != symbol.GetPosition() )
 return false;
 
 if( GetUnit() != symbol.GetUnit() )
 return false;
 
 if( GetBodyStyle() != symbol.GetBodyStyle() )
 return false;
 
 if( GetTransform() != symbol.GetTransform() )
 return false;
 
 if( GetFields() != symbol.GetFields() )
 return false;
 
 if( m_pins.size() != symbol.m_pins.size() )
 return false;
 
 for( unsigned i = 0; i < m_pins.size(); ++i )
 {
 if( !( *m_pins[i] == *symbol.m_pins[i] ) )
 return false;
 }
 
 return true;
}
 
 
double SCH_SYMBOL::Similarity( const SCH_ITEM& aOther ) const
{
 if( Type() != aOther.Type() )
 return 0.0;
 
 const SCH_SYMBOL& symbol = static_cast<const SCH_SYMBOL&>( aOther );
 
 if( GetLibId() != symbol.GetLibId() )
 return 0.0;
 
 if( GetPosition() == symbol.GetPosition() )
 return 1.0;
 
 return 0.0;
}
 
 
static struct SCH_SYMBOL_DESC
{
 SCH_SYMBOL_DESC()
 {
 ENUM_MAP<SYMBOL_ORIENTATION_PROP>::Instance()
 .Map( SYMBOL_ANGLE_0, wxS( "0" ) )
 .Map( SYMBOL_ANGLE_90, wxS( "90" ) )
 .Map( SYMBOL_ANGLE_180, wxS( "180" ) )
 .Map( SYMBOL_ANGLE_270, wxS( "270" ) );
 
 PROPERTY_MANAGER& propMgr = PROPERTY_MANAGER::Instance();
 REGISTER_TYPE( SCH_SYMBOL );
 propMgr.InheritsAfter( TYPE_HASH( SCH_SYMBOL ), TYPE_HASH( SYMBOL ) );
 
 propMgr.AddProperty( new PROPERTY<SCH_SYMBOL, int>( _HKI( "Position X" ),
 &SCH_SYMBOL::SetX, &SCH_SYMBOL::GetX, PROPERTY_DISPLAY::PT_COORD,
 ORIGIN_TRANSFORMS::ABS_X_COORD ) );
 propMgr.AddProperty( new PROPERTY<SCH_SYMBOL, int>( _HKI( "Position Y" ),
 &SCH_SYMBOL::SetY, &SCH_SYMBOL::GetY, PROPERTY_DISPLAY::PT_COORD,
 ORIGIN_TRANSFORMS::ABS_Y_COORD ) );
 
 propMgr.AddProperty( new PROPERTY_ENUM<SCH_SYMBOL, SYMBOL_ORIENTATION_PROP>(
 _HKI( "Orientation" ),
 &SCH_SYMBOL::SetOrientationProp, &SCH_SYMBOL::GetOrientationProp ) );
 propMgr.AddProperty( new PROPERTY<SCH_SYMBOL, bool>( _HKI( "Mirror X" ),
 &SCH_SYMBOL::SetMirrorX, &SCH_SYMBOL::GetMirrorX ) );
 propMgr.AddProperty( new PROPERTY<SCH_SYMBOL, bool>( _HKI( "Mirror Y" ),
 &SCH_SYMBOL::SetMirrorY, &SCH_SYMBOL::GetMirrorY ) );
 
 auto hasLibPart =
 []( INSPECTABLE* aItem ) -> bool
 {
 if( SCH_SYMBOL* symbol = dynamic_cast<SCH_SYMBOL*>( aItem ) )
 return symbol->GetLibSymbolRef() != nullptr;
 
 return false;
 };
 
 propMgr.AddProperty( new PROPERTY<SYMBOL, bool>( _HKI( "Pin numbers" ),
 &SYMBOL::SetShowPinNumbers, &SYMBOL::GetShowPinNumbers ) )
 .SetAvailableFunc( hasLibPart );
 
 propMgr.AddProperty( new PROPERTY<SYMBOL, bool>( _HKI( "Pin names" ),
 &SYMBOL::SetShowPinNames, &SYMBOL::GetShowPinNames ) )
 .SetAvailableFunc( hasLibPart );
 
 const wxString groupFields = _HKI( "Fields" );
 
 propMgr.AddProperty( new PROPERTY<SCH_SYMBOL, wxString>( _HKI( "Reference" ),
 &SCH_SYMBOL::SetRefProp, &SCH_SYMBOL::GetRefProp ),
 groupFields );
 propMgr.AddProperty( new PROPERTY<SCH_SYMBOL, wxString>( _HKI( "Value" ),
 &SCH_SYMBOL::SetValueProp, &SCH_SYMBOL::GetValueProp ),
 groupFields );
 propMgr.AddProperty( new PROPERTY<SCH_SYMBOL, wxString>( _HKI( "Library Link" ),
 NO_SETTER( SCH_SYMBOL, wxString ), &SCH_SYMBOL::GetSymbolIDAsString ),
 groupFields );
 propMgr.AddProperty( new PROPERTY<SCH_SYMBOL, wxString>( _HKI( "Library Description" ),
 NO_SETTER( SCH_SYMBOL, wxString ), &SCH_SYMBOL::GetDescription ),
 groupFields );
 propMgr.AddProperty( new PROPERTY<SCH_SYMBOL, wxString>( _HKI( "Keywords" ),
 NO_SETTER( SCH_SYMBOL, wxString ), &SCH_SYMBOL::GetKeyWords ),
 groupFields );
 
 const wxString groupAttributes = _HKI( "Attributes" );
 
 propMgr.AddProperty( new PROPERTY<SYMBOL, bool>( _HKI( "Exclude From Board" ),
 &SYMBOL::SetExcludedFromBoard, &SYMBOL::GetExcludedFromBoard ),
 groupAttributes );
 propMgr.AddProperty( new PROPERTY<SYMBOL, bool>( _HKI( "Exclude From Simulation" ),
 &SYMBOL::SetExcludedFromSim, &SYMBOL::GetExcludedFromSim ),
 groupAttributes );
 propMgr.AddProperty( new PROPERTY<SYMBOL, bool>( _HKI( "Exclude From Bill of Materials" ),
 &SYMBOL::SetExcludedFromBOM, &SYMBOL::GetExcludedFromBOM ),
 groupAttributes );
 propMgr.AddProperty( new PROPERTY<SYMBOL, bool>( _HKI( "Do not Populate" ),
 &SYMBOL::SetDNP, &SYMBOL::GetDNP ),
 groupAttributes );
 }
} _SCH_SYMBOL_DESC;
 
ENUM_TO_WXANY( SYMBOL_ORIENTATION_PROP )