lib_symbol.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2004-2015 Jean-Pierre Charras, jp.charras at wanadoo.fr
 * Copyright (C) 2008 Wayne Stambaugh <[email protected]>
 * Copyright (C) 2004-2022 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_draw_panel.h>
#include <plotters/plotter.h>
#include <sch_screen.h>
#include <richio.h>
#include <general.h>
#include <template_fieldnames.h>
#include <transform.h>
#include <symbol_library.h>
#include <lib_pin.h>
#include <settings/color_settings.h>
#include <lib_shape.h>
 
// the separator char between the subpart id and the reference
// 0 (no separator) or '.' or some other character
int LIB_SYMBOL::m_subpartIdSeparator = 0;
 
// the ascii char value to calculate the subpart symbol id from the part number:
// 'A' or '1' usually. (to print U1.A or U1.1)
// if this a digit, a number is used as id symbol
int LIB_SYMBOL::m_subpartFirstId = 'A';
 
 
wxString LIB_SYMBOL::GetSearchText()
{
 // Matches are scored by offset from front of string, so inclusion of this spacer
 // discounts matches found after it.
 static const wxString discount( wxT( " " ) );
 
 wxString text = GetKeyWords() + discount + GetDescription();
 wxString footprint = GetFootprintField().GetText();
 
 if( !footprint.IsEmpty() )
 {
 text += discount + footprint;
 }
 
 // TODO(JE) rework this later so we can highlight matches in their column
 std::map<wxString, wxString> fields;
 GetChooserFields( fields );
 
 for( const auto& it : fields )
 text += discount + it.second;
 
 return text;
}
 
 
void LIB_SYMBOL::GetChooserFields( std::map<wxString , wxString>& aColumnMap )
{
 for( LIB_ITEM& item : m_drawings[ LIB_FIELD_T ] )
 {
 LIB_FIELD* field = static_cast<LIB_FIELD*>( &item );
 
 if( field->ShowInChooser() )
 aColumnMap[field->GetName()] = field->EDA_TEXT::GetShownText();
 }
}
 
 
bool operator<( const LIB_SYMBOL& aItem1, const LIB_SYMBOL& aItem2 )
{
 return aItem1.GetName() < aItem2.GetName();
}
 
 
struct null_deleter
{
 void operator()(void const *) const
 {
 }
};
 
 
LIB_SYMBOL::LIB_SYMBOL( const wxString& aName, LIB_SYMBOL* aParent, SYMBOL_LIB* aLibrary ) :
 EDA_ITEM( LIB_SYMBOL_T ),
 m_me( this, null_deleter() ),
 m_includeInBom( true ),
 m_includeOnBoard( true )
{
 m_lastModDate = 0;
 m_unitCount = 1;
 m_pinNameOffset = schIUScale.MilsToIU( DEFAULT_PIN_NAME_OFFSET );
 m_options = ENTRY_NORMAL;
 m_unitsLocked = false;
 m_showPinNumbers = true;
 m_showPinNames = true;
 
 // Add the MANDATORY_FIELDS in RAM only. These are assumed to be present
 // when the field editors are invoked.
 m_drawings[LIB_FIELD_T].reserve( 4 );
 m_drawings[LIB_FIELD_T].push_back( new LIB_FIELD( this, VALUE_FIELD ) );
 m_drawings[LIB_FIELD_T].push_back( new LIB_FIELD( this, REFERENCE_FIELD ) );
 m_drawings[LIB_FIELD_T].push_back( new LIB_FIELD( this, FOOTPRINT_FIELD ) );
 m_drawings[LIB_FIELD_T].push_back( new LIB_FIELD( this, DATASHEET_FIELD ) );
 
 SetName( aName );
 
 if( aParent )
 SetParent( aParent );
 
 SetLib( aLibrary );
}
 
 
LIB_SYMBOL::LIB_SYMBOL( const LIB_SYMBOL& aSymbol, SYMBOL_LIB* aLibrary ) :
 EDA_ITEM( aSymbol ),
 m_me( this, null_deleter() )
{
 LIB_ITEM* newItem;
 
 m_library = aLibrary;
 m_name = aSymbol.m_name;
 m_fpFilters = wxArrayString( aSymbol.m_fpFilters );
 m_unitCount = aSymbol.m_unitCount;
 m_unitsLocked = aSymbol.m_unitsLocked;
 m_pinNameOffset = aSymbol.m_pinNameOffset;
 m_showPinNumbers = aSymbol.m_showPinNumbers;
 m_includeInBom = aSymbol.m_includeInBom;
 m_includeOnBoard = aSymbol.m_includeOnBoard;
 m_showPinNames = aSymbol.m_showPinNames;
 m_lastModDate = aSymbol.m_lastModDate;
 m_options = aSymbol.m_options;
 m_libId = aSymbol.m_libId;
 m_description = aSymbol.m_description;
 m_keyWords = aSymbol.m_keyWords;
 
 aSymbol.CopyUnitDisplayNames( m_unitDisplayNames );
 
 ClearSelected();
 
 for( const LIB_ITEM& oldItem : aSymbol.m_drawings )
 {
 if( ( oldItem.GetFlags() & ( IS_NEW | STRUCT_DELETED ) ) != 0 )
 continue;
 
 try
 {
 newItem = (LIB_ITEM*) oldItem.Clone();
 newItem->ClearSelected();
 newItem->SetParent( this );
 m_drawings.push_back( newItem );
 }
 catch( ... )
 {
 wxFAIL_MSG( "Failed to clone LIB_ITEM." );
 return;
 }
 }
 
 LIB_SYMBOL_SPTR parent = aSymbol.m_parent.lock();
 
 if( parent )
 SetParent( parent.get() );
}
 
 
LIB_SYMBOL::~LIB_SYMBOL()
{
}
 
 
const LIB_SYMBOL& LIB_SYMBOL::operator=( const LIB_SYMBOL& aSymbol )
{
 if( &aSymbol == this )
 return aSymbol;
 
 LIB_ITEM* newItem;
 
 m_library = aSymbol.m_library;
 m_name = aSymbol.m_name;
 m_fpFilters = wxArrayString( aSymbol.m_fpFilters );
 m_unitCount = aSymbol.m_unitCount;
 m_unitsLocked = aSymbol.m_unitsLocked;
 m_pinNameOffset = aSymbol.m_pinNameOffset;
 m_showPinNumbers = aSymbol.m_showPinNumbers;
 m_showPinNames = aSymbol.m_showPinNames;
 m_includeInBom = aSymbol.m_includeInBom;
 m_includeOnBoard = aSymbol.m_includeOnBoard;
 m_lastModDate = aSymbol.m_lastModDate;
 m_options = aSymbol.m_options;
 m_libId = aSymbol.m_libId;
 m_description = aSymbol.m_description;
 m_keyWords = aSymbol.m_keyWords;
 
 m_unitDisplayNames.clear();
 aSymbol.CopyUnitDisplayNames( m_unitDisplayNames );
 
 m_drawings.clear();
 
 for( const LIB_ITEM& oldItem : aSymbol.m_drawings )
 {
 if( ( oldItem.GetFlags() & ( IS_NEW | STRUCT_DELETED ) ) != 0 )
 continue;
 
 newItem = (LIB_ITEM*) oldItem.Clone();
 newItem->SetParent( this );
 m_drawings.push_back( newItem );
 }
 
 m_drawings.sort();
 
 LIB_SYMBOL_SPTR parent = aSymbol.m_parent.lock();
 
 if( parent )
 SetParent( parent.get() );
 
 return *this;
}
 
 
int LIB_SYMBOL::Compare( const LIB_SYMBOL& aRhs, int aCompareFlags ) const
{
 if( m_me == aRhs.m_me )
 return 0;
 
 int retv = 0;
 
 if( ( aCompareFlags & LIB_ITEM::COMPARE_FLAGS::ERC ) == 0 )
 {
 retv = m_name.Cmp( aRhs.m_name );
 
 if( retv )
 return retv;
 
 retv = m_libId.compare( aRhs.m_libId );
 
 if( retv )
 return retv;
 }
 
 if( m_parent.lock() < aRhs.m_parent.lock() )
 return -1;
 
 if( m_parent.lock() > aRhs.m_parent.lock() )
 return 1;
 
 if( m_options != aRhs.m_options )
 return ( m_options == ENTRY_NORMAL ) ? -1 : 1;
 
 if( m_unitCount != aRhs.m_unitCount )
 return m_unitCount - aRhs.m_unitCount;
 
 if( m_drawings.size() != aRhs.m_drawings.size() )
 return m_drawings.size() - aRhs.m_drawings.size();
 
 LIB_ITEMS_CONTAINER::CONST_ITERATOR lhsItemIt = m_drawings.begin();
 LIB_ITEMS_CONTAINER::CONST_ITERATOR rhsItemIt = aRhs.m_drawings.begin();
 
 while( lhsItemIt != m_drawings.end() )
 {
 const LIB_ITEM* lhsItem = static_cast<const LIB_ITEM*>( &(*lhsItemIt) );
 const LIB_ITEM* rhsItem = static_cast<const LIB_ITEM*>( &(*rhsItemIt) );
 
 wxCHECK( lhsItem && rhsItem, lhsItem - rhsItem );
 
 if( lhsItem->Type() != rhsItem->Type() )
 return lhsItem->Type() - rhsItem->Type();
 
 // Non-mandatory fields are a special case. They can have different ordinal numbers
 // and are compared separately below.
 if( lhsItem->Type() == LIB_FIELD_T )
 {
 const LIB_FIELD* lhsField = static_cast<const LIB_FIELD*>( lhsItem );
 
 if( lhsField->GetId() == VALUE_FIELD )
 {
 if( ( aCompareFlags & LIB_ITEM::COMPARE_FLAGS::ERC ) == 0 || IsPower() )
 retv = lhsItem->compare( *rhsItem, aCompareFlags );
 }
 else if( lhsField->IsMandatory() )
 {
 retv = lhsItem->compare( *rhsItem, aCompareFlags );
 }
 }
 else
 {
 retv = lhsItem->compare( *rhsItem, aCompareFlags );
 }
 
 if( retv )
 return retv;
 
 ++lhsItemIt;
 ++rhsItemIt;
 }
 
 // Compare the optional fields.
 for( const LIB_ITEM& item : m_drawings[ LIB_FIELD_T ] )
 {
 const LIB_FIELD* field = dynamic_cast<const LIB_FIELD*>( &item );
 
 wxCHECK2( field, continue );
 
 // Mandatory fields were already compared above.
 if( field->IsMandatory() )
 continue;
 
 const LIB_FIELD* foundField = aRhs.FindField( field->GetName() );
 
 if( foundField == nullptr )
 return 1;
 
 retv = item.compare( static_cast<const LIB_ITEM&>( *foundField ), aCompareFlags );
 
 if( retv )
 return retv;
 }
 
 if( m_fpFilters.GetCount() != aRhs.m_fpFilters.GetCount() )
 return m_fpFilters.GetCount() - aRhs.m_fpFilters.GetCount();
 
 for( size_t i = 0; i < m_fpFilters.GetCount(); i++ )
 {
 retv = m_fpFilters[i].Cmp( aRhs.m_fpFilters[i] );
 
 if( retv )
 return retv;
 }
 
 retv = m_description.Cmp( aRhs.m_description );
 
 if( retv )
 return retv;
 
 retv = m_keyWords.Cmp( aRhs.m_keyWords );
 
 if( retv )
 return retv;
 
 if( m_pinNameOffset != aRhs.m_pinNameOffset )
 return m_pinNameOffset - aRhs.m_pinNameOffset;
 
 if( m_unitsLocked != aRhs.m_unitsLocked )
 return ( m_unitsLocked ) ? 1 : -1;
 
 if( ( aCompareFlags & LIB_ITEM::COMPARE_FLAGS::ERC ) == 0 )
 {
 if( m_showPinNames != aRhs.m_showPinNames )
 return ( m_showPinNames ) ? 1 : -1;
 
 if( m_showPinNumbers != aRhs.m_showPinNumbers )
 return ( m_showPinNumbers ) ? 1 : -1;
 
 if( m_includeInBom != aRhs.m_includeInBom )
 return ( m_includeInBom ) ? 1 : -1;
 
 if( m_includeOnBoard != aRhs.m_includeOnBoard )
 return ( m_includeOnBoard ) ? 1 : -1;
 }
 
 // Compare unit display names
 if( m_unitDisplayNames < aRhs.m_unitDisplayNames )
 {
 return -1;
 }
 else if( m_unitDisplayNames > aRhs.m_unitDisplayNames )
 {
 return 1;
 }
 
 return 0;
}
 
 
wxString LIB_SYMBOL::GetUnitReference( int aUnit )
{
 return LIB_SYMBOL::SubReference( aUnit, false );
}
 
 
bool LIB_SYMBOL::HasUnitDisplayName( int aUnit )
{
 return ( m_unitDisplayNames.count( aUnit ) == 1 );
}
 
 
wxString LIB_SYMBOL::GetUnitDisplayName( int aUnit )
{
 if( HasUnitDisplayName( aUnit ) )
 {
 return m_unitDisplayNames[aUnit];
 }
 else
 {
 return wxString::Format( _( "Unit %s" ), GetUnitReference( aUnit ) );
 }
}
 
 
void LIB_SYMBOL::CopyUnitDisplayNames( std::map<int, wxString>& aTarget ) const
{
 for( const auto& it : m_unitDisplayNames )
 {
 aTarget[it.first] = it.second;
 }
}
 
 
void LIB_SYMBOL::SetUnitDisplayName( int aUnit, const wxString& aName )
{
 if( aUnit <= GetUnitCount() )
 {
 if( aName.Length() > 0 )
 {
 m_unitDisplayNames[aUnit] = aName;
 }
 else
 {
 m_unitDisplayNames.erase( aUnit );
 }
 }
}
 
 
void LIB_SYMBOL::SetName( const wxString& aName )
{
 m_name = aName;
 m_libId.SetLibItemName( aName );
 
 if( IsPower() )
 GetValueField().SetText( aName );
}
 
 
void LIB_SYMBOL::SetParent( LIB_SYMBOL* aParent )
{
 if( aParent )
 m_parent = aParent->SharedPtr();
 else
 m_parent.reset();
}
 
 
std::unique_ptr< LIB_SYMBOL > LIB_SYMBOL::Flatten() const
{
 std::unique_ptr< LIB_SYMBOL > retv;
 
 if( IsAlias() )
 {
 LIB_SYMBOL_SPTR parent = m_parent.lock();
 
 wxCHECK_MSG( parent, retv,
 wxString::Format( "Parent of derived symbol '%s' undefined", m_name ) );
 
 // Copy the parent.
 retv.reset( new LIB_SYMBOL( *parent.get() ) );
 
 retv->m_name = m_name;
 retv->SetLibId( m_libId );
 
 // Now add the inherited part mandatory field (this) information.
 for( int i = 0; i < MANDATORY_FIELDS; i++ )
 {
 wxString tmp = GetFieldById( i )->GetText();
 
 // If the field isn't defined then inherit the parent field value.
 if( tmp.IsEmpty() )
 retv->GetFieldById( i )->SetText( parent->GetFieldById( i )->GetText() );
 else
 *retv->GetFieldById( i ) = *GetFieldById( i );
 }
 
 // Grab all the rest of derived symbol fields.
 for( const LIB_ITEM& item : m_drawings[ LIB_FIELD_T ] )
 {
 const LIB_FIELD* aliasField = dynamic_cast<const LIB_FIELD*>( &item );
 
 wxCHECK2( aliasField, continue );
 
 // Mandatory fields were already resolved.
 if( aliasField->IsMandatory() )
 continue;
 
 LIB_FIELD* newField = new LIB_FIELD( *aliasField );
 newField->SetParent( retv.get() );
 
 LIB_FIELD* parentField = retv->FindField( aliasField->GetName() );
 
 if( !parentField ) // Derived symbol field does not exist in parent symbol.
 {
 retv->AddDrawItem( newField );
 }
 else // Derived symbol field overrides the parent symbol field.
 {
 retv->RemoveDrawItem( parentField );
 retv->AddDrawItem( newField );
 }
 }
 
 retv->SetKeyWords( m_keyWords.IsEmpty() ? parent->GetKeyWords() : m_keyWords );
 retv->SetDescription( m_description.IsEmpty() ? parent->GetDescription() : m_description );
 retv->SetFPFilters( m_fpFilters.IsEmpty() ? parent->GetFPFilters() : m_fpFilters );
 retv->UpdateFieldOrdinals();
 }
 else
 {
 retv.reset( new LIB_SYMBOL( *this ) );
 }
 
 return retv;
}
 
 
void LIB_SYMBOL::ClearCaches()
{
 for( LIB_ITEM& item : m_drawings )
 {
 if( EDA_TEXT* eda_text = dynamic_cast<EDA_TEXT*>( &item ) )
 {
 eda_text->ClearBoundingBoxCache();
 eda_text->ClearRenderCache();
 }
 }
}
 
 
const wxString LIB_SYMBOL::GetLibraryName() const
{
 if( m_library )
 return m_library->GetName();
 
 return m_libId.GetLibNickname();
}
 
 
bool LIB_SYMBOL::IsPower() const
{
 if( LIB_SYMBOL_SPTR parent = m_parent.lock() )
 return parent->m_options == ENTRY_POWER;
 
 return m_options == ENTRY_POWER;
}
 
 
void LIB_SYMBOL::SetPower()
{
 if( LIB_SYMBOL_SPTR parent = m_parent.lock() )
 parent->m_options = ENTRY_POWER;
 
 m_options = ENTRY_POWER;
}
 
 
bool LIB_SYMBOL::IsNormal() const
{
 if( LIB_SYMBOL_SPTR parent = m_parent.lock() )
 return parent->m_options == ENTRY_NORMAL;
 
 return m_options == ENTRY_NORMAL;
}
 
 
void LIB_SYMBOL::SetNormal()
{
 if( LIB_SYMBOL_SPTR parent = m_parent.lock() )
 parent->m_options = ENTRY_NORMAL;
 
 m_options = ENTRY_NORMAL;
}
 
 
wxString LIB_SYMBOL::SubReference( int aUnit, bool aAddSeparator )
{
 wxString subRef;
 
 if( aUnit < 1 )
 return subRef;
 
 if( m_subpartIdSeparator != 0 && aAddSeparator )
 subRef << wxChar( m_subpartIdSeparator );
 
 if( m_subpartFirstId >= '0' && m_subpartFirstId <= '9' )
 {
 subRef << aUnit;
 }
 else
 {
 // use letters as notation. To allow more than 26 units, the sub ref
 // use one letter if letter = A .. Z or a ... z, and 2 letters otherwise
 // first letter is expected to be 'A' or 'a' (i.e. 26 letters are available)
 int u;
 
 do
 {
 u = ( aUnit - 1 ) % 26;
 subRef = wxChar( m_subpartFirstId + u ) + subRef;
 aUnit = ( aUnit - u ) / 26;
 } while( aUnit > 0 );
 
 }
 
 return subRef;
}
 
 
void LIB_SYMBOL::PrintBackground( const RENDER_SETTINGS* aSettings, const VECTOR2I& aOffset,
 int aUnit, int aConvert, const LIB_SYMBOL_OPTIONS& aOpts, bool aDimmed )
{
 /* draw background for filled items using background option
 * Solid lines will be drawn after the background
 * Note also, background is not drawn when printing in black and white
 */
 if( !GetGRForceBlackPenState() )
 {
 for( LIB_ITEM& item : m_drawings )
 {
 // Do not print private items
 if( item.IsPrivate() )
 continue;
 
 if( item.Type() == LIB_SHAPE_T )
 {
 LIB_SHAPE& shape = static_cast<LIB_SHAPE&>( item );
 
 // Do not draw items not attached to the current part
 if( aUnit && shape.m_unit && ( shape.m_unit != aUnit ) )
 continue;
 
 if( aConvert && shape.m_convert && ( shape.m_convert != aConvert ) )
 continue;
 
 if( shape.GetFillMode() == FILL_T::FILLED_WITH_BG_BODYCOLOR )
 shape.Print( aSettings, aOffset, (void*) false, aOpts.transform, aDimmed );
 }
 }
 }
}
 
 
void LIB_SYMBOL::Print( const RENDER_SETTINGS* aSettings, const VECTOR2I& aOffset, int aUnit,
 int aConvert, const LIB_SYMBOL_OPTIONS& aOpts, bool aDimmed )
{
 
 for( LIB_ITEM& item : m_drawings )
 {
 // Do not print private items
 if( item.IsPrivate() )
 continue;
 
 // Do not draw items not attached to the current part
 if( aUnit && item.m_unit && ( item.m_unit != aUnit ) )
 continue;
 
 if( aConvert && item.m_convert && ( item.m_convert != aConvert ) )
 continue;
 
 if( item.Type() == LIB_FIELD_T )
 {
 LIB_FIELD& field = static_cast<LIB_FIELD&>( item );
 
 if( field.IsVisible() && !aOpts.draw_visible_fields )
 continue;
 
 if( !field.IsVisible() && !aOpts.draw_hidden_fields )
 continue;
 }
 
 if( item.Type() == LIB_PIN_T )
 {
 item.Print( aSettings, aOffset, (void*) &aOpts, aOpts.transform, aDimmed );
 }
 else if( item.Type() == LIB_FIELD_T )
 {
 item.Print( aSettings, aOffset, (void*) NULL, aOpts.transform, aDimmed );
 }
 else if( item.Type() == LIB_SHAPE_T )
 {
 LIB_SHAPE& shape = static_cast<LIB_SHAPE&>( item );
 bool forceNoFill = shape.GetFillMode() == FILL_T::FILLED_WITH_BG_BODYCOLOR;
 
 shape.Print( aSettings, aOffset, (void*) forceNoFill, aOpts.transform, aDimmed );
 }
 else
 {
 item.Print( aSettings, aOffset, (void*) false, aOpts.transform, aDimmed );
 }
 }
}
 
 
void LIB_SYMBOL::Plot( PLOTTER *aPlotter, int aUnit, int aConvert, bool aBackground,
 const VECTOR2I &aOffset, const TRANSFORM &aTransform, bool aDimmed ) const
{
 wxASSERT( aPlotter != nullptr );
 
 COLOR4D color = aPlotter->RenderSettings()->GetLayerColor( LAYER_DEVICE );
 COLOR4D bg = aPlotter->RenderSettings()->GetBackgroundColor();
 
 if( bg == COLOR4D::UNSPECIFIED || !aPlotter->GetColorMode() )
 bg = COLOR4D::WHITE;
 
 if( aDimmed )
 color = color.Mix( bg, 0.5f );
 
 aPlotter->SetColor( color );
 
 for( const LIB_ITEM& item : m_drawings )
 {
 // Do not plot private items
 if( item.IsPrivate() )
 continue;
 
 // LIB_FIELDs are not plotted here, because this plot function is used to plot schematic
 // items which have their own SCH_FIELDs
 if( item.Type() == LIB_FIELD_T )
 continue;
 
 if( aUnit && item.m_unit && ( item.m_unit != aUnit ) )
 continue;
 
 if( aConvert && item.m_convert && ( item.m_convert != aConvert ) )
 continue;
 
 item.Plot( aPlotter, aBackground, aOffset, aTransform, aDimmed );
 }
}
 
 
void LIB_SYMBOL::PlotLibFields( PLOTTER* aPlotter, int aUnit, int aConvert, bool aBackground,
 const VECTOR2I& aOffset, const TRANSFORM& aTransform, bool aDimmed )
{
 wxASSERT( aPlotter != nullptr );
 
 COLOR4D color = aPlotter->RenderSettings()->GetLayerColor( LAYER_FIELDS );
 COLOR4D bg = aPlotter->RenderSettings()->GetBackgroundColor();
 
 if( bg == COLOR4D::UNSPECIFIED || !aPlotter->GetColorMode() )
 bg = COLOR4D::WHITE;
 
 if( aDimmed )
 color = color.Mix( bg, 0.5f );
 
 aPlotter->SetColor( color );
 
 for( LIB_ITEM& item : m_drawings )
 {
 if( item.Type() != LIB_FIELD_T )
 continue;
 
 if( aUnit && item.m_unit && ( item.m_unit != aUnit ) )
 continue;
 
 if( aConvert && item.m_convert && ( item.m_convert != aConvert ) )
 continue;
 
 LIB_FIELD& field = (LIB_FIELD&) item;
 
 // The reference is a special case: we should change the basic text
 // to add '?' and the part id
 wxString tmp = field.GetShownText();
 
 if( field.GetId() == REFERENCE_FIELD )
 {
 wxString text = field.GetFullText( aUnit );
 field.SetText( text );
 }
 
 item.Plot( aPlotter, aBackground, aOffset, aTransform, aDimmed );
 field.SetText( tmp );
 }
}
 
 
void LIB_SYMBOL::RemoveDrawItem( LIB_ITEM* aItem )
{
 wxASSERT( aItem != nullptr );
 
 // none of the MANDATORY_FIELDS may be removed in RAM, but they may be
 // omitted when saving to disk.
 if( aItem->Type() == LIB_FIELD_T )
 {
 if( static_cast<LIB_FIELD*>( aItem )->IsMandatory() )
 return;
 }
 
 LIB_ITEMS& items = m_drawings[ aItem->Type() ];
 
 for( LIB_ITEMS::iterator i = items.begin(); i != items.end(); i++ )
 {
 if( &*i == aItem )
 {
 items.erase( i );
 SetModified();
 break;
 }
 }
}
 
 
void LIB_SYMBOL::AddDrawItem( LIB_ITEM* aItem, bool aSort )
{
 wxCHECK( aItem, /* void */ );
 
 m_drawings.push_back( aItem );
 
 if( aSort )
 m_drawings.sort();
}
 
 
LIB_ITEM* LIB_SYMBOL::GetNextDrawItem( const LIB_ITEM* aItem, KICAD_T aType )
{
 if( aItem == nullptr )
 {
 LIB_ITEMS_CONTAINER::ITERATOR it1 = m_drawings.begin( aType );
 
 return (it1 != m_drawings.end( aType ) ) ? &( *( m_drawings.begin( aType ) ) ) : nullptr;
 }
 
 // Search for the last item, assume aItem is of type aType
 wxASSERT( ( aType == TYPE_NOT_INIT ) || ( aType == aItem->Type() ) );
 LIB_ITEMS_CONTAINER::ITERATOR it = m_drawings.begin( aType );
 
 while( ( it != m_drawings.end( aType ) ) && ( aItem != &( *it ) ) )
 ++it;
 
 // Search the next item
 if( it != m_drawings.end( aType ) )
 {
 ++it;
 
 if( it != m_drawings.end( aType ) )
 return &( *it );
 }
 
 return nullptr;
}
 
 
void LIB_SYMBOL::GetPins( LIB_PINS& aList, int aUnit, int aConvert ) const
{
 /* Notes:
 * when aUnit == 0: no unit filtering
 * when aConvert == 0: no convert (shape selection) filtering
 * when m_unit == 0, the body item is common to units
 * when m_convert == 0, the body item is common to shapes
 */
 
 LIB_SYMBOL_SPTR parent = m_parent.lock();
 const LIB_ITEMS_CONTAINER& drawItems = parent ? parent->m_drawings : m_drawings;
 
 for( const LIB_ITEM& item : drawItems[LIB_PIN_T] )
 {
 // Unit filtering:
 if( aUnit && item.m_unit && ( item.m_unit != aUnit ) )
 continue;
 
 // Shape filtering:
 if( aConvert && item.m_convert && ( item.m_convert != aConvert ) )
 continue;
 
 aList.push_back( (LIB_PIN*) &item );
 }
}
 
 
LIB_PIN* LIB_SYMBOL::GetPin( const wxString& aNumber, int aUnit, int aConvert ) const
{
 LIB_PINS pinList;
 
 GetPins( pinList, aUnit, aConvert );
 
 for( size_t i = 0; i < pinList.size(); i++ )
 {
 wxASSERT( pinList[i]->Type() == LIB_PIN_T );
 
 if( aNumber == pinList[i]->GetNumber() )
 return pinList[i];
 }
 
 return nullptr;
}
 
 
bool LIB_SYMBOL::PinsConflictWith( const LIB_SYMBOL& aOtherPart, bool aTestNums, bool aTestNames,
 bool aTestType, bool aTestOrientation, bool aTestLength ) const
{
 LIB_PINS thisPinList;
 GetPins( thisPinList, /* aUnit */ 0, /* aConvert */ 0 );
 
 for( const LIB_PIN* eachThisPin : thisPinList )
 {
 wxASSERT( eachThisPin );
 LIB_PINS otherPinList;
 aOtherPart.GetPins( otherPinList, /* aUnit */ 0, /* aConvert */ 0 );
 bool foundMatch = false;
 
 for( const LIB_PIN* eachOtherPin : otherPinList )
 {
 wxASSERT( eachOtherPin );
 
 // Same unit?
 if( eachThisPin->GetUnit() != eachOtherPin->GetUnit() )
 continue;
 
 // Same body stype?
 if( eachThisPin->GetConvert() != eachOtherPin->GetConvert() )
 continue;
 
 // Same position?
 if( eachThisPin->GetPosition() != eachOtherPin->GetPosition() )
 continue;
 
 // Same number?
 if( aTestNums && ( eachThisPin->GetNumber() != eachOtherPin->GetNumber() ) )
 continue;
 
 // Same name?
 if( aTestNames && ( eachThisPin->GetName() != eachOtherPin->GetName() ) )
 continue;
 
 // Same electrical type?
 if( aTestType && ( eachThisPin->GetType() != eachOtherPin->GetType() ) )
 continue;
 
 // Same orientation?
 if( aTestOrientation
 && ( eachThisPin->GetOrientation() != eachOtherPin->GetOrientation() ) )
 continue;
 
 // Same length?
 if( aTestLength && ( eachThisPin->GetLength() != eachOtherPin->GetLength() ) )
 continue;
 
 foundMatch = true;
 break; // Match found so search is complete.
 }
 
 if( !foundMatch )
 {
 // This means there was not an identical (according to the arguments)
 // pin at the same position in the other symbol.
 return true;
 }
 }
 
 // The loop never gave up, so no conflicts were found.
 return false;
}
 
 
const BOX2I LIB_SYMBOL::GetUnitBoundingBox( int aUnit, int aConvert ) const
{
 BOX2I bBox; // Start with a fresh BOX2I so the Merge algorithm works
 
 for( const LIB_ITEM& item : m_drawings )
 {
 if( item.m_unit > 0
 && m_unitCount > 1
 && aUnit > 0
 && aUnit != item.m_unit )
 {
 continue;
 }
 
 if( item.m_convert > 0 && aConvert > 0 && aConvert != item.m_convert )
 continue;
 
 if ( ( item.Type() == LIB_FIELD_T ) && !( ( LIB_FIELD& ) item ).IsVisible() )
 continue;
 
 bBox.Merge( item.GetBoundingBox() );
 }
 
 return bBox;
}
 
 
void LIB_SYMBOL::ViewGetLayers( int aLayers[], int& aCount ) const
{
 aCount = 6;
 aLayers[0] = LAYER_DEVICE;
 aLayers[1] = LAYER_DEVICE_BACKGROUND;
 aLayers[2] = LAYER_REFERENCEPART;
 aLayers[3] = LAYER_VALUEPART;
 aLayers[4] = LAYER_FIELDS;
 aLayers[5] = LAYER_SELECTION_SHADOWS;
}
 
 
const BOX2I LIB_SYMBOL::GetBodyBoundingBox( int aUnit, int aConvert, bool aIncludePins,
 bool aIncludePrivateItems ) const
{
 BOX2I bbox;
 
 for( const LIB_ITEM& item : m_drawings )
 {
 if( item.m_unit > 0 && aUnit > 0 && aUnit != item.m_unit )
 continue;
 
 if( item.m_convert > 0 && aConvert > 0 && aConvert != item.m_convert )
 continue;
 
 if( item.IsPrivate() && !aIncludePrivateItems )
 continue;
 
 if( item.Type() == LIB_FIELD_T )
 continue;
 
 if( item.Type() == LIB_PIN_T )
 {
 const LIB_PIN& pin = static_cast<const LIB_PIN&>( item );
 
 if( pin.IsVisible() )
 {
 // Note: the roots of the pins are always included for symbols that don't have
 // a well-defined body.
 
 if( aIncludePins )
 bbox.Merge( pin.GetBoundingBox( false, false, false ) );
 else
 bbox.Merge( pin.GetPinRoot() );
 }
 }
 else
 {
 bbox.Merge( item.GetBoundingBox() );
 }
 }
 
 return bbox;
}
 
 
void LIB_SYMBOL::deleteAllFields()
{
 m_drawings[ LIB_FIELD_T ].clear();
}
 
 
void LIB_SYMBOL::AddField( LIB_FIELD* aField )
{
 AddDrawItem( aField );
}
 
 
void LIB_SYMBOL::SetFields( const std::vector <LIB_FIELD>& aFields )
{
 deleteAllFields();
 
 for( unsigned i=0; i<aFields.size(); ++i )
 {
 // drawings is a ptr_vector, new and copy an object on the heap.
 LIB_FIELD* field = new LIB_FIELD( aFields[i] );
 
 field->SetParent( this );
 m_drawings.push_back( field );
 }
 
 m_drawings.sort();
}
 
 
void LIB_SYMBOL::GetFields( std::vector<LIB_FIELD*>& aList )
{
 // Grab the MANDATORY_FIELDS first, in expected order given by enum MANDATORY_FIELD_T
 for( int id = 0; id < MANDATORY_FIELDS; ++id )
 aList.push_back( GetFieldById( id ) );
 
 // Now grab all the rest of fields.
 for( LIB_ITEM& item : m_drawings[ LIB_FIELD_T ] )
 {
 LIB_FIELD* field = static_cast<LIB_FIELD*>( &item );
 
 if( !field->IsMandatory() )
 aList.push_back( field );
 }
}
 
 
void LIB_SYMBOL::GetFields( std::vector<LIB_FIELD>& aList )
{
 // Grab the MANDATORY_FIELDS first, in expected order given by enum MANDATORY_FIELD_T
 for( int id = 0; id < MANDATORY_FIELDS; ++id )
 aList.push_back( *GetFieldById( id ) );
 
 // Now grab all the rest of fields.
 for( LIB_ITEM& item : m_drawings[ LIB_FIELD_T ] )
 {
 LIB_FIELD* field = static_cast<LIB_FIELD*>( &item );
 
 if( !field->IsMandatory() )
 aList.push_back( *field );
 }
}
 
 
LIB_FIELD* LIB_SYMBOL::GetFieldById( int aId ) const
{
 for( const LIB_ITEM& item : m_drawings[ LIB_FIELD_T ] )
 {
 LIB_FIELD* field = ( LIB_FIELD* ) &item;
 
 if( field->GetId() == aId )
 return field;
 }
 
 return nullptr;
}
 
 
LIB_FIELD* LIB_SYMBOL::FindField( const wxString& aFieldName )
{
 for( LIB_ITEM& item : m_drawings[ LIB_FIELD_T ] )
 {
 if( static_cast<LIB_FIELD*>( &item )->GetCanonicalName() == aFieldName )
 return static_cast<LIB_FIELD*>( &item );
 }
 
 return nullptr;
}
 
 
const LIB_FIELD* LIB_SYMBOL::FindField( const wxString& aFieldName ) const
{
 for( const LIB_ITEM& item : m_drawings[ LIB_FIELD_T ] )
 {
 if( static_cast<const LIB_FIELD*>( &item )->GetCanonicalName() == aFieldName )
 return static_cast<const LIB_FIELD*>( &item );
 }
 
 return nullptr;
}
 
 
LIB_FIELD& LIB_SYMBOL::GetValueField()
{
 LIB_FIELD* field = GetFieldById( VALUE_FIELD );
 wxASSERT( field != nullptr );
 return *field;
}
 
 
LIB_FIELD& LIB_SYMBOL::GetReferenceField()
{
 LIB_FIELD* field = GetFieldById( REFERENCE_FIELD );
 wxASSERT( field != nullptr );
 return *field;
}
 
 
LIB_FIELD& LIB_SYMBOL::GetFootprintField()
{
 LIB_FIELD* field = GetFieldById( FOOTPRINT_FIELD );
 wxASSERT( field != nullptr );
 return *field;
}
 
 
LIB_FIELD& LIB_SYMBOL::GetDatasheetField()
{
 LIB_FIELD* field = GetFieldById( DATASHEET_FIELD );
 wxASSERT( field != nullptr );
 return *field;
}
 
 
int LIB_SYMBOL::UpdateFieldOrdinals()
{
 int retv = 0;
 int lastOrdinal = MANDATORY_FIELDS;
 
 for( LIB_ITEM& item : m_drawings[ LIB_FIELD_T ] )
 {
 LIB_FIELD* field = dynamic_cast<LIB_FIELD*>( &item );
 
 wxCHECK2( field, continue );
 
 // Mandatory fields were already resolved always have the same ordinal values.
 if( field->IsMandatory() )
 continue;
 
 if( field->GetId() != lastOrdinal )
 {
 field->SetId( lastOrdinal );
 retv += 1;
 }
 
 lastOrdinal += 1;
 }
 
 return retv;
}
 
 
int LIB_SYMBOL::GetNextAvailableFieldId() const
{
 int retv = MANDATORY_FIELDS;
 
 while( GetFieldById( retv ) )
 retv += 1;
 
 return retv;
}
 
 
void LIB_SYMBOL::SetOffset( const VECTOR2I& aOffset )
{
 for( LIB_ITEM& item : m_drawings )
 item.Offset( aOffset );
}
 
 
void LIB_SYMBOL::RemoveDuplicateDrawItems()
{
 m_drawings.unique();
}
 
 
bool LIB_SYMBOL::HasConversion() const
{
 for( const LIB_ITEM& item : m_drawings )
 {
 if( item.m_convert > LIB_ITEM::LIB_CONVERT::BASE )
 return true;
 }
 
 if( LIB_SYMBOL_SPTR parent = m_parent.lock() )
 {
 for( const LIB_ITEM& item : parent->GetDrawItems() )
 {
 if( item.m_convert > LIB_ITEM::LIB_CONVERT::BASE )
 return true;
 }
 }
 
 return false;
}
 
int LIB_SYMBOL::GetMaxPinNumber() const
{
 int maxPinNumber = 0;
 LIB_SYMBOL_SPTR parent = m_parent.lock();
 const LIB_ITEMS_CONTAINER& drawItems = parent ? parent->m_drawings : m_drawings;
 
 for( const LIB_ITEM& item : drawItems[LIB_PIN_T] )
 {
 const LIB_PIN* pin = static_cast<const LIB_PIN*>( &item );
 long currentPinNumber = 0;
 bool isNum = pin->GetNumber().ToLong( &currentPinNumber );
 
 if( isNum && currentPinNumber > maxPinNumber )
 {
 maxPinNumber = currentPinNumber;
 }
 }
 
 return maxPinNumber;
}
 
 
void LIB_SYMBOL::ClearTempFlags()
{
 for( LIB_ITEM& item : m_drawings )
 item.ClearTempFlags();
}
 
 
void LIB_SYMBOL::ClearEditFlags()
{
 for( LIB_ITEM& item : m_drawings )
 item.ClearEditFlags();
}
 
 
LIB_ITEM* LIB_SYMBOL::LocateDrawItem( int aUnit, int aConvert, KICAD_T aType,
 const VECTOR2I& aPoint )
{
 for( LIB_ITEM& item : m_drawings )
 {
 if( ( aUnit && item.m_unit && aUnit != item.m_unit )
 || ( aConvert && item.m_convert && aConvert != item.m_convert )
 || ( item.Type() != aType && aType != TYPE_NOT_INIT ) )
 {
 continue;
 }
 
 if( item.HitTest( aPoint ) )
 return &item;
 }
 
 return nullptr;
}
 
 
LIB_ITEM* LIB_SYMBOL::LocateDrawItem( int aUnit, int aConvert, KICAD_T aType,
 const VECTOR2I& aPoint, const TRANSFORM& aTransform )
{
 /* we use LocateDrawItem( int aUnit, int convert, KICAD_T type, const
 * VECTOR2I& pt ) to search items.
 * because this function uses DefaultTransform as orient/mirror matrix
 * we temporary copy aTransform in DefaultTransform
 */
 LIB_ITEM* item;
 TRANSFORM transform = DefaultTransform;
 DefaultTransform = aTransform;
 
 item = LocateDrawItem( aUnit, aConvert, aType, aPoint );
 
 // Restore matrix
 DefaultTransform = transform;
 
 return item;
}
 
 
INSPECT_RESULT LIB_SYMBOL::Visit( INSPECTOR aInspector, void* aTestData,
 const std::vector<KICAD_T>& aScanTypes )
{
 // The part itself is never inspected, only its children
 for( LIB_ITEM& item : m_drawings )
 {
 if( item.IsType( aScanTypes ) )
 {
 if( aInspector( &item, aTestData ) == INSPECT_RESULT::QUIT )
 return INSPECT_RESULT::QUIT;
 }
 }
 
 return INSPECT_RESULT::CONTINUE;
}
 
 
void LIB_SYMBOL::SetUnitCount( int aCount, bool aDuplicateDrawItems )
{
 if( m_unitCount == aCount )
 return;
 
 if( aCount < m_unitCount )
 {
 LIB_ITEMS_CONTAINER::ITERATOR i = m_drawings.begin();
 
 while( i != m_drawings.end() )
 {
 if( i->m_unit > aCount )
 i = m_drawings.erase( i );
 else
 ++i;
 }
 }
 else if( aDuplicateDrawItems )
 {
 int prevCount = m_unitCount;
 
 // Temporary storage for new items, as adding new items directly to
 // m_drawings may cause the buffer reallocation which invalidates the
 // iterators
 std::vector< LIB_ITEM* > tmp;
 
 for( LIB_ITEM& item : m_drawings )
 {
 if( item.m_unit != 1 )
 continue;
 
 for( int j = prevCount + 1; j <= aCount; j++ )
 {
 LIB_ITEM* newItem = (LIB_ITEM*) item.Clone();
 newItem->m_unit = j;
 tmp.push_back( newItem );
 }
 }
 
 for( LIB_ITEM* item : tmp )
 m_drawings.push_back( item );
 }
 
 m_drawings.sort();
 m_unitCount = aCount;
}
 
 
int LIB_SYMBOL::GetUnitCount() const
{
 if( LIB_SYMBOL_SPTR parent = m_parent.lock() )
 return parent->GetUnitCount();
 
 return m_unitCount;
}
 
 
void LIB_SYMBOL::SetConversion( bool aSetConvert, bool aDuplicatePins )
{
 if( aSetConvert == HasConversion() )
 return;
 
 // Duplicate items to create the converted shape
 if( aSetConvert )
 {
 if( aDuplicatePins )
 {
 std::vector< LIB_ITEM* > tmp; // Temporarily store the duplicated pins here.
 
 for( LIB_ITEM& item : m_drawings )
 {
 // Only pins are duplicated.
 if( item.Type() != LIB_PIN_T )
 continue;
 
 if( item.m_convert == 1 )
 {
 LIB_ITEM* newItem = (LIB_ITEM*) item.Clone();
 newItem->m_convert = 2;
 tmp.push_back( newItem );
 }
 }
 
 // Transfer the new pins to the LIB_SYMBOL.
 for( unsigned i = 0; i < tmp.size(); i++ )
 m_drawings.push_back( tmp[i] );
 }
 }
 else
 {
 // Delete converted shape items because the converted shape does
 // not exist
 LIB_ITEMS_CONTAINER::ITERATOR i = m_drawings.begin();
 
 while( i != m_drawings.end() )
 {
 if( i->m_convert > 1 )
 i = m_drawings.erase( i );
 else
 ++i;
 }
 }
 
 m_drawings.sort();
}
 
 
void LIB_SYMBOL::SetSubpartIdNotation( int aSep, int aFirstId )
{
 m_subpartFirstId = 'A';
 m_subpartIdSeparator = 0;
 
 if( aSep == '.' || aSep == '-' || aSep == '_' )
 m_subpartIdSeparator = aSep;
 
 if( aFirstId == '1' && aSep != 0 )
 m_subpartFirstId = aFirstId;
}
 
 
std::vector<LIB_ITEM*> LIB_SYMBOL::GetUnitDrawItems( int aUnit, int aConvert )
{
 std::vector<LIB_ITEM*> unitItems;
 
 for( LIB_ITEM& item : m_drawings )
 {
 if( item.Type() == LIB_FIELD_T )
 continue;
 
 if( ( aConvert == -1 && item.GetUnit() == aUnit )
 || ( aUnit == -1 && item.GetConvert() == aConvert )
 || ( aUnit == item.GetUnit() && aConvert == item.GetConvert() ) )
 {
 unitItems.push_back( &item );
 }
 }
 
 return unitItems;
}
 
 
std::vector<struct LIB_SYMBOL_UNIT> LIB_SYMBOL::GetUnitDrawItems()
{
 std::vector<struct LIB_SYMBOL_UNIT> units;
 
 for( LIB_ITEM& item : m_drawings )
 {
 if( item.Type() == LIB_FIELD_T )
  continue;
 
 int unit = item.GetUnit();
 int convert = item.GetConvert();
 
 auto it = std::find_if( units.begin(), units.end(),
 [unit, convert]( const LIB_SYMBOL_UNIT& a )
 {
 return a.m_unit == unit && a.m_convert == convert;
 } );
 
 if( it == units.end() )
 {
 struct LIB_SYMBOL_UNIT newUnit;
 newUnit.m_unit = item.GetUnit();
 newUnit.m_convert = item.GetConvert();
 newUnit.m_items.push_back( &item );
 units.emplace_back( newUnit );
 }
 else
 {
 it->m_items.push_back( &item );
 }
 }
 
 return units;
}
 
 
std::vector<struct LIB_SYMBOL_UNIT> LIB_SYMBOL::GetUniqueUnits()
{
 int unitNum;
 size_t i;
 struct LIB_SYMBOL_UNIT unit;
 std::vector<LIB_ITEM*> compareDrawItems;
 std::vector<LIB_ITEM*> currentDrawItems;
 std::vector<struct LIB_SYMBOL_UNIT> uniqueUnits;
 
 // The first unit is guaranteed to be unique so always include it.
 unit.m_unit = 1;
 unit.m_convert = 1;
 unit.m_items = GetUnitDrawItems( 1, 1 );
 
 // There are no unique units if there are no draw items other than fields.
 if( unit.m_items.size() == 0 )
 return uniqueUnits;
 
 uniqueUnits.emplace_back( unit );
 
 if( ( GetUnitCount() == 1 || UnitsLocked() ) && !HasConversion() )
 return uniqueUnits;
 
 currentDrawItems = unit.m_items;
 
 for( unitNum = 2; unitNum <= GetUnitCount(); unitNum++ )
 {
 compareDrawItems = GetUnitDrawItems( unitNum, 1 );
 
 wxCHECK2_MSG( compareDrawItems.size() != 0, continue,
 "Multiple unit symbol defined with empty units." );
 
 if( currentDrawItems.size() != compareDrawItems.size() )
 {
 unit.m_unit = unitNum;
 unit.m_convert = 1;
 unit.m_items = compareDrawItems;
 uniqueUnits.emplace_back( unit );
 }
 else
 {
 for( i = 0; i < currentDrawItems.size(); i++ )
 {
 if( currentDrawItems[i]->compare( *compareDrawItems[i],
 LIB_ITEM::COMPARE_FLAGS::UNIT ) != 0 )
 {
 unit.m_unit = unitNum;
 unit.m_convert = 1;
 unit.m_items = compareDrawItems;
 uniqueUnits.emplace_back( unit );
 }
 }
 }
 }
 
 if( HasConversion() )
 {
 currentDrawItems = GetUnitDrawItems( 1, 2 );
 
 if( ( GetUnitCount() == 1 || UnitsLocked() ) )
 {
 unit.m_unit = 1;
 unit.m_convert = 2;
 unit.m_items = currentDrawItems;
 uniqueUnits.emplace_back( unit );
 
 return uniqueUnits;
 }
 
 for( unitNum = 2; unitNum <= GetUnitCount(); unitNum++ )
 {
 compareDrawItems = GetUnitDrawItems( unitNum, 2 );
 
 wxCHECK2_MSG( compareDrawItems.size() != 0, continue,
 "Multiple unit symbol defined with empty units." );
 
 if( currentDrawItems.size() != compareDrawItems.size() )
 {
 unit.m_unit = unitNum;
 unit.m_convert = 2;
 unit.m_items = compareDrawItems;
 uniqueUnits.emplace_back( unit );
 }
 else
 {
 for( i = 0; i < currentDrawItems.size(); i++ )
 {
 if( currentDrawItems[i]->compare( *compareDrawItems[i],
 LIB_ITEM::COMPARE_FLAGS::UNIT ) != 0 )
 {
 unit.m_unit = unitNum;
 unit.m_convert = 2;
 unit.m_items = compareDrawItems;
 uniqueUnits.emplace_back( unit );
 }
 }
 }
 }
 }
 
 return uniqueUnits;
}