sch_field.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) 2004-2024 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
 */
 
/*
 * Fields are texts attached to a symbol, some of which have a special meaning.
 * Fields 0 and 1 are very important: reference and value.
 * Field 2 is used as default footprint name.
 * Field 3 is used to point to a datasheet (usually a URL).
 * Fields 4+ are user fields. They can be renamed and can appear in reports.
 */
 
#include <wx/log.h>
#include <wx/menu.h>
#include <base_units.h>
#include <common.h> // for ExpandTextVars
#include <sch_edit_frame.h>
#include <plotters/plotter.h>
#include <bitmaps.h>
#include <core/mirror.h>
#include <kiway.h>
#include <symbol_library.h>
#include <sch_symbol.h>
#include <sch_field.h>
#include <sch_label.h>
#include <schematic.h>
#include <settings/color_settings.h>
#include <string_utils.h>
#include <trace_helpers.h>
#include <tool/tool_manager.h>
#include <tools/sch_navigate_tool.h>
#include <font/outline_font.h>
#include "sim/sim_lib_mgr.h"
 
SCH_FIELD::SCH_FIELD( const VECTOR2I& aPos, int aFieldId, SCH_ITEM* aParent,
 const wxString& aName ) :
 SCH_ITEM( aParent, SCH_FIELD_T ),
 EDA_TEXT( schIUScale, wxEmptyString ),
 m_id( 0 ),
 m_showName( false ),
 m_allowAutoPlace( true ),
 m_autoAdded( false ),
 m_showInChooser( true ),
 m_renderCacheValid( false ),
 m_lastResolvedColor( COLOR4D::UNSPECIFIED )
{
 if( aName.IsEmpty() )
 SetName( TEMPLATE_FIELDNAME::GetDefaultFieldName( aFieldId ) );
 else
 SetName( aName );
 
 SetTextPos( aPos );
 SetId( aFieldId ); // will also set the layer
 SetVisible( true );
}
 
 
SCH_FIELD::SCH_FIELD( SCH_ITEM* aParent, int aFieldId, const wxString& aName) :
 SCH_FIELD( VECTOR2I(), aFieldId, aParent, aName )
{
}
 
 
SCH_FIELD::SCH_FIELD( const SCH_FIELD& aField ) :
 SCH_ITEM( aField ),
 EDA_TEXT( aField )
{
 m_id = aField.m_id;
 m_name = aField.m_name;
 m_showName = aField.m_showName;
 m_allowAutoPlace = aField.m_allowAutoPlace;
 m_isNamedVariable = aField.m_isNamedVariable;
 m_autoAdded = aField.m_autoAdded;
 m_showInChooser = aField.m_showInChooser;
 
 m_renderCache.clear();
 
 for( const std::unique_ptr<KIFONT::GLYPH>& glyph : aField.m_renderCache )
 {
 if( KIFONT::OUTLINE_GLYPH* outline = dynamic_cast<KIFONT::OUTLINE_GLYPH*>( glyph.get() ) )
 m_renderCache.emplace_back( std::make_unique<KIFONT::OUTLINE_GLYPH>( *outline ) );
 else if( KIFONT::STROKE_GLYPH* stroke = dynamic_cast<KIFONT::STROKE_GLYPH*>( glyph.get() ) )
 m_renderCache.emplace_back( std::make_unique<KIFONT::STROKE_GLYPH>( *stroke ) );
 }
 
 m_renderCacheValid = aField.m_renderCacheValid;
 m_renderCachePos = aField.m_renderCachePos;
 
 m_lastResolvedColor = aField.m_lastResolvedColor;
}
 
 
SCH_FIELD& SCH_FIELD::operator=( const SCH_FIELD& aField )
{
 EDA_TEXT::operator=( aField );
 
 m_id = aField.m_id;
 m_name = aField.m_name;
 m_showName = aField.m_showName;
 m_allowAutoPlace = aField.m_allowAutoPlace;
 m_isNamedVariable = aField.m_isNamedVariable;
 
 m_renderCache.clear();
 
 for( const std::unique_ptr<KIFONT::GLYPH>& glyph : aField.m_renderCache )
 {
 if( KIFONT::OUTLINE_GLYPH* outline = dynamic_cast<KIFONT::OUTLINE_GLYPH*>( glyph.get() ) )
 m_renderCache.emplace_back( std::make_unique<KIFONT::OUTLINE_GLYPH>( *outline ) );
 else if( KIFONT::STROKE_GLYPH* stroke = dynamic_cast<KIFONT::STROKE_GLYPH*>( glyph.get() ) )
 m_renderCache.emplace_back( std::make_unique<KIFONT::STROKE_GLYPH>( *stroke ) );
 }
 
 m_renderCacheValid = aField.m_renderCacheValid;
 m_renderCachePos = aField.m_renderCachePos;
 
 m_lastResolvedColor = aField.m_lastResolvedColor;
 
 return *this;
}
 
 
EDA_ITEM* SCH_FIELD::Clone() const
{
 return new SCH_FIELD( *this );
}
 
 
void SCH_FIELD::Copy( SCH_FIELD* aTarget ) const
{
 *aTarget = *this;
}
 
 
void SCH_FIELD::SetId( int aId )
{
 m_id = aId;
 
 if( m_parent && m_parent->Type() == SCH_SHEET_T )
 {
 switch( m_id )
 {
 case SHEETNAME: SetLayer( LAYER_SHEETNAME ); break;
 case SHEETFILENAME: SetLayer( LAYER_SHEETFILENAME ); break;
 default: SetLayer( LAYER_SHEETFIELDS ); break;
 }
 }
 else if( m_parent && ( m_parent->Type() == SCH_SYMBOL_T || m_parent->Type() == LIB_SYMBOL_T ) )
 {
 switch( m_id )
 {
 case REFERENCE_FIELD: SetLayer( LAYER_REFERENCEPART ); break;
 case VALUE_FIELD: SetLayer( LAYER_VALUEPART ); break;
 default: SetLayer( LAYER_FIELDS ); break;
 }
 }
 else if( m_parent && m_parent->IsType( { SCH_LABEL_LOCATE_ANY_T } ) )
 {
 // We can't use defined IDs for labels because there can be multiple net class
 // assignments.
 
 if( GetCanonicalName() == wxT( "Netclass" ) )
 SetLayer( LAYER_NETCLASS_REFS );
 else if( GetCanonicalName() == wxT( "Intersheetrefs" ) )
 SetLayer( LAYER_INTERSHEET_REFS );
 else
 SetLayer( LAYER_FIELDS );
 }
}
 
 
wxString SCH_FIELD::GetShownName() const
{
 return m_isNamedVariable ? GetTextVars( GetName() ) : GetName();
}
 
 
wxString SCH_FIELD::GetShownText( const SCH_SHEET_PATH* aPath, bool aAllowExtraText,
 int aDepth ) const
{
 std::function<bool( wxString* )> symbolResolver =
 [&]( wxString* token ) -> bool
 {
 SCH_SYMBOL* symbol = static_cast<SCH_SYMBOL*>( m_parent );
 return symbol->ResolveTextVar( aPath, token, aDepth + 1 );
 };
 
 std::function<bool( wxString* )> schematicResolver =
 [&]( wxString* token ) -> bool
 {
 if( SCHEMATIC* schematic = Schematic() )
 return schematic->ResolveTextVar( aPath, token, aDepth + 1 );
 
 return false;
 };
 
 std::function<bool( wxString* )> sheetResolver =
 [&]( wxString* token ) -> bool
 {
 SCH_SHEET* sheet = static_cast<SCH_SHEET*>( m_parent );
 
 SCHEMATIC* schematic = Schematic();
 SCH_SHEET_PATH path = *aPath;
 path.push_back( sheet );
 
 bool retval = sheet->ResolveTextVar( &path, token, aDepth + 1 );
 
 if( schematic )
 retval |= schematic->ResolveTextVar( &path, token, aDepth + 1 );
 
 return retval;
 };
 
 std::function<bool( wxString* )> labelResolver =
 [&]( wxString* token ) -> bool
 {
 SCH_LABEL_BASE* label = static_cast<SCH_LABEL_BASE*>( m_parent );
 return label->ResolveTextVar( aPath, token, aDepth + 1 );
 };
 
 wxString text = EDA_TEXT::GetShownText( aAllowExtraText, aDepth );
 
 if( IsNameShown() && aAllowExtraText )
 text = GetShownName() << wxS( ": " ) << text;
 
 if( !aPath )
 return text;
 
 if( text == wxS( "~" ) ) // Legacy placeholder for empty string
 {
 text = wxS( "" );
 }
 
 for( int ii = 0; ii < 10 && text.Contains( wxT( "${" ) ); ++ii )
 {
 if( aDepth < 10 )
 {
 if( m_parent && m_parent->Type() == SCH_SYMBOL_T )
 text = ExpandTextVars( text, &symbolResolver );
 else if( m_parent && m_parent->Type() == SCH_SHEET_T )
 text = ExpandTextVars( text, &sheetResolver );
 else if( m_parent && m_parent->IsType( { SCH_LABEL_LOCATE_ANY_T } ) )
 text = ExpandTextVars( text, &labelResolver );
 else if( Schematic() )
 {
 text = ExpandTextVars( text, &Schematic()->Prj() );
 text = ExpandTextVars( text, &schematicResolver );
 }
 }
 }
 
 // WARNING: the IDs of FIELDS and SHEETS overlap, so one must check *both* the
 // id and the parent's type.
 
 if( m_parent && m_parent->Type() == SCH_SYMBOL_T )
 {
 SCH_SYMBOL* parentSymbol = static_cast<SCH_SYMBOL*>( m_parent );
 
 if( m_id == REFERENCE_FIELD )
 {
 // For more than one part per package, we must add the part selection
 // A, B, ... or 1, 2, .. to the reference.
 if( parentSymbol->GetUnitCount() > 1 )
 text << parentSymbol->SubReference( parentSymbol->GetUnitSelection( aPath ) );
 }
 }
 else if( m_parent && m_parent->Type() == SCH_SHEET_T )
 {
 if( m_id == SHEETFILENAME && aAllowExtraText && !IsNameShown() )
 text = _( "File:" ) + wxS( " " ) + text;
 }
 
 return text;
}
 
 
wxString SCH_FIELD::GetShownText( bool aAllowExtraText, int aDepth ) const
{
 if( SCHEMATIC* schematic = Schematic() )
 return GetShownText( &schematic->CurrentSheet(), aAllowExtraText, aDepth );
 else
 return GetShownText( nullptr, aAllowExtraText, aDepth );
}
 
 
wxString SCH_FIELD::GetFullText( int unit ) const
{
 if( GetId() != REFERENCE_FIELD )
 return GetText();
 
 wxString text = GetText();
 text << wxT( "?" );
 
 if( GetParentSymbol() && GetParentSymbol()->IsMulti() )
 text << LIB_SYMBOL::LetterSubReference( unit, 'A' );
 
 return text;
}
 
 
int SCH_FIELD::GetPenWidth() const
{
 return GetEffectiveTextPenWidth();
}
 
 
KIFONT::FONT* SCH_FIELD::getDrawFont() const
{
 KIFONT::FONT* font = EDA_TEXT::GetFont();
 
 if( !font )
 font = KIFONT::FONT::GetFont( GetDefaultFont(), IsBold(), IsItalic() );
 
 return font;
}
 
 
void SCH_FIELD::ClearCaches()
{
 ClearRenderCache();
 EDA_TEXT::ClearBoundingBoxCache();
}
 
 
void SCH_FIELD::ClearRenderCache()
{
 EDA_TEXT::ClearRenderCache();
 m_renderCacheValid = false;
}
 
 
std::vector<std::unique_ptr<KIFONT::GLYPH>>*
SCH_FIELD::GetRenderCache( const wxString& forResolvedText, const VECTOR2I& forPosition,
 TEXT_ATTRIBUTES& aAttrs ) const
{
 KIFONT::FONT* font = GetFont();
 
 if( !font )
 font = KIFONT::FONT::GetFont( GetDefaultFont(), IsBold(), IsItalic() );
 
 if( font->IsOutline() )
 {
 KIFONT::OUTLINE_FONT* outlineFont = static_cast<KIFONT::OUTLINE_FONT*>( font );
 
 if( m_renderCache.empty() || !m_renderCacheValid )
 {
 m_renderCache.clear();
 
 outlineFont->GetLinesAsGlyphs( &m_renderCache, forResolvedText, forPosition, aAttrs,
 GetFontMetrics() );
 
 m_renderCachePos = forPosition;
 m_renderCacheValid = true;
 }
 
 if( m_renderCachePos != forPosition )
 {
 VECTOR2I delta = forPosition - m_renderCachePos;
 
 for( std::unique_ptr<KIFONT::GLYPH>& glyph : m_renderCache )
 {
 if( glyph->IsOutline() )
 static_cast<KIFONT::OUTLINE_GLYPH*>( glyph.get() )->Move( delta );
 else
 static_cast<KIFONT::STROKE_GLYPH*>( glyph.get() )->Move( delta );
 }
 
 m_renderCachePos = forPosition;
 }
 
 return &m_renderCache;
 }
 
 return nullptr;
}
 
 
void SCH_FIELD::Print( const SCH_RENDER_SETTINGS* aSettings, int aUnit, int aBodyStyle,
 const VECTOR2I& aOffset, bool aForceNoFill, bool aDimmed )
{
 wxString text;
 
 if( Schematic() )
 text = GetShownText( &Schematic()->CurrentSheet(), true );
 else
 text = GetShownText( true );
 
 if( ( !IsVisible() && !IsForceVisible() ) || text.IsEmpty() )
 return;
 
 wxDC* DC = aSettings->GetPrintDC();
 COLOR4D color = aSettings->GetLayerColor( IsForceVisible() ? LAYER_HIDDEN : m_layer );
 bool blackAndWhiteMode = GetGRForceBlackPenState();
 int penWidth = GetEffectiveTextPenWidth( aSettings->GetDefaultPenWidth() );
 
 COLOR4D bg = aSettings->GetBackgroundColor();
 
 if( bg == COLOR4D::UNSPECIFIED || GetGRForceBlackPenState() )
 bg = COLOR4D::WHITE;
 
 if( IsForceVisible() )
 bg = aSettings->GetLayerColor( LAYER_HIDDEN );
 
 if( !blackAndWhiteMode && GetTextColor() != COLOR4D::UNSPECIFIED )
 color = GetTextColor();
 
 if( aDimmed )
 {
 color.Desaturate( );
 color = color.Mix( bg, 0.5f );
 }
 
 // Calculate the text orientation according to the symbol orientation.
 EDA_ANGLE orient = GetTextAngle();
 VECTOR2I textpos = GetTextPos();
 GR_TEXT_H_ALIGN_T hjustify = GetHorizJustify();
 GR_TEXT_V_ALIGN_T vjustify = GetVertJustify();
 KIFONT::FONT* font = GetFont();
 
 if( !font )
 font = KIFONT::FONT::GetFont( aSettings->GetDefaultFont(), IsBold(), IsItalic() );
 
 if( m_parent && m_parent->Type() == LIB_SYMBOL_T )
 {
 textpos = aSettings->TransformCoordinate( GetTextPos() ) + aOffset;
 }
 else if( m_parent && m_parent->Type() == SCH_SYMBOL_T )
 {
 /*
 * Calculate the text justification, according to the symbol orientation/mirror.
 * This is a bit complicated due to cumulative calculations:
 * - numerous cases (mirrored or not, rotation)
 * - the GRText function will also recalculate H and V justifications according to the
 * text orientation.
 * - when symbol is mirrored, the text is not mirrored and justifications are complicated
 * to calculate so the easier way is to use no justifications (centered text) and use
 * GetBoundingBox to know the text coordinate considered as centered
 */
 hjustify = GR_TEXT_H_ALIGN_CENTER;
 vjustify = GR_TEXT_V_ALIGN_CENTER;
 textpos = GetBoundingBox().Centre() + aOffset;
 
 if( aSettings->m_Transform.y1 ) // Rotate symbol 90 degrees.
 {
 if( orient == ANGLE_HORIZONTAL )
 orient = ANGLE_VERTICAL;
 else
 orient = ANGLE_HORIZONTAL;
 }
 }
 else if( m_parent && m_parent->Type() == SCH_GLOBAL_LABEL_T )
 {
 SCH_GLOBALLABEL* label = static_cast<SCH_GLOBALLABEL*>( GetParent() );
 textpos += label->GetSchematicTextOffset( aSettings );
 }
 
 GRPrintText( DC, textpos, color, text, orient, GetTextSize(), hjustify, vjustify, penWidth,
 IsItalic(), IsBold(), font, GetFontMetrics() );
}
 
 
void SCH_FIELD::ImportValues( const SCH_FIELD& aSource )
{
 SetAttributes( aSource );
 SetNameShown( aSource.IsNameShown() );
 SetCanAutoplace( aSource.CanAutoplace() );
}
 
 
void SCH_FIELD::SwapData( SCH_ITEM* aItem )
{
 wxCHECK_RET( aItem && aItem->Type() == SCH_FIELD_T, wxT( "Cannot swap with invalid item." ) );
 
 SCH_ITEM::SwapFlags( aItem );
 
 SCH_FIELD* item = static_cast<SCH_FIELD*>( aItem );
 
 std::swap( m_layer, item->m_layer );
 std::swap( m_showName, item->m_showName );
 std::swap( m_allowAutoPlace, item->m_allowAutoPlace );
 std::swap( m_isNamedVariable, item->m_isNamedVariable );
 SwapText( *item );
 SwapAttributes( *item );
 
 std::swap( m_lastResolvedColor, item->m_lastResolvedColor );
}
 
 
COLOR4D SCH_FIELD::GetFieldColor() const
{
 if( GetTextColor() != COLOR4D::UNSPECIFIED )
 {
 m_lastResolvedColor = GetTextColor();
 }
 else
 {
 SCH_LABEL_BASE* parentLabel = dynamic_cast<SCH_LABEL_BASE*>( GetParent() );
 
 if( parentLabel && !parentLabel->IsConnectivityDirty() )
 m_lastResolvedColor = parentLabel->GetEffectiveNetClass()->GetSchematicColor();
 else
 m_lastResolvedColor = GetTextColor();
 }
 
 return m_lastResolvedColor;
}
 
 
void SCH_FIELD::ViewGetLayers( int aLayers[], int& aCount ) const
{
 aCount = 2;
 aLayers[0] = GetDefaultLayer();
 aLayers[1] = LAYER_SELECTION_SHADOWS;
}
 
 
SCH_LAYER_ID SCH_FIELD::GetDefaultLayer() const
{
 if( m_parent && ( m_parent->Type() == LIB_SYMBOL_T || m_parent->Type() == SCH_SYMBOL_T ) )
 {
 if( m_id == REFERENCE_FIELD )
 return LAYER_REFERENCEPART;
 else if( m_id == VALUE_FIELD )
 return LAYER_VALUEPART;
 }
 else if( m_parent && m_parent->Type() == SCH_SHEET_T )
 {
 if( m_id == SHEETNAME )
 return LAYER_SHEETNAME;
 else if( m_id == SHEETFILENAME )
 return LAYER_SHEETFILENAME;
 else
 return LAYER_SHEETFIELDS;
 }
 else if( m_parent && m_parent->Type() == SCH_LABEL_T )
 {
 if( GetCanonicalName() == wxT( "Netclass" ) )
 return LAYER_NETCLASS_REFS;
 }
 
 return LAYER_FIELDS;
}
 
 
EDA_ANGLE SCH_FIELD::GetDrawRotation() const
{
 // Calculate the text orientation according to the symbol orientation.
 EDA_ANGLE orient = GetTextAngle();
 
 if( m_parent && m_parent->Type() == SCH_SYMBOL_T )
 {
 SCH_SYMBOL* parentSymbol = static_cast<SCH_SYMBOL*>( m_parent );
 
 if( parentSymbol && parentSymbol->GetTransform().y1 ) // Rotate symbol 90 degrees.
 {
 if( orient.IsHorizontal() )
 orient = ANGLE_VERTICAL;
 else
 orient = ANGLE_HORIZONTAL;
 }
 }
 
 return orient;
}
 
 
const BOX2I SCH_FIELD::GetBoundingBox() const
{
 BOX2I bbox = GetTextBox();
 
 // Calculate the bounding box position relative to the parent:
 VECTOR2I origin = GetParentPosition();
 VECTOR2I pos = GetTextPos() - origin;
 VECTOR2I begin = bbox.GetOrigin() - origin;
 VECTOR2I end = bbox.GetEnd() - origin;
 RotatePoint( begin, pos, GetTextAngle() );
 RotatePoint( end, pos, GetTextAngle() );
 
 // Now, apply the symbol transform (mirror/rot)
 TRANSFORM transform;
 
 if( m_parent && m_parent->Type() == SCH_SYMBOL_T )
 {
 SCH_SYMBOL* parentSymbol = static_cast<SCH_SYMBOL*>( m_parent );
 
 // Due to the Y axis direction, we must mirror the bounding box, relative to the
 // text position:
 MIRROR( begin.y, pos.y );
 MIRROR( end.y, pos.y );
 
 transform = parentSymbol->GetTransform();
 }
 
 bbox.SetOrigin( transform.TransformCoordinate( begin ) );
 bbox.SetEnd( transform.TransformCoordinate( end ) );
 
 bbox.Move( origin );
 bbox.Normalize();
 
 return bbox;
}
 
 
bool SCH_FIELD::IsHorizJustifyFlipped() const
{
 VECTOR2I render_center = GetBoundingBox().Centre();
 VECTOR2I pos = GetPosition();
 
 switch( GetHorizJustify() )
 {
 case GR_TEXT_H_ALIGN_LEFT:
 if( GetDrawRotation().IsVertical() )
 return render_center.y > pos.y;
 else
 return render_center.x < pos.x;
 case GR_TEXT_H_ALIGN_RIGHT:
 if( GetDrawRotation().IsVertical() )
 return render_center.y < pos.y;
 else
 return render_center.x > pos.x;
 default:
 return false;
 }
}
 
 
GR_TEXT_H_ALIGN_T SCH_FIELD::GetEffectiveHorizJustify() const
{
 switch( GetHorizJustify() )
 {
 case GR_TEXT_H_ALIGN_LEFT:
 return IsHorizJustifyFlipped() ? GR_TEXT_H_ALIGN_RIGHT : GR_TEXT_H_ALIGN_LEFT;
 case GR_TEXT_H_ALIGN_RIGHT:
 return IsHorizJustifyFlipped() ? GR_TEXT_H_ALIGN_LEFT : GR_TEXT_H_ALIGN_RIGHT;
 default:
 return GR_TEXT_H_ALIGN_CENTER;
 }
}
 
 
bool SCH_FIELD::IsVertJustifyFlipped() const
{
 VECTOR2I render_center = GetBoundingBox().Centre();
 VECTOR2I pos = GetPosition();
 
 switch( GetVertJustify() )
 {
 case GR_TEXT_V_ALIGN_TOP:
 if( GetDrawRotation().IsVertical() )
 return render_center.x < pos.x;
 else
 return render_center.y < pos.y;
 case GR_TEXT_V_ALIGN_BOTTOM:
 if( GetDrawRotation().IsVertical() )
 return render_center.x > pos.x;
 else
 return render_center.y > pos.y;
 default:
 return false;
 }
}
 
 
GR_TEXT_V_ALIGN_T SCH_FIELD::GetEffectiveVertJustify() const
{
 switch( GetVertJustify() )
 {
 case GR_TEXT_V_ALIGN_TOP:
 return IsVertJustifyFlipped() ? GR_TEXT_V_ALIGN_BOTTOM : GR_TEXT_V_ALIGN_TOP;
 case GR_TEXT_V_ALIGN_BOTTOM:
 return IsVertJustifyFlipped() ? GR_TEXT_V_ALIGN_TOP : GR_TEXT_V_ALIGN_BOTTOM;
 default:
 return GR_TEXT_V_ALIGN_CENTER;
 }
}
 
 
bool SCH_FIELD::Matches( const EDA_SEARCH_DATA& aSearchData, void* aAuxData ) const
{
 bool searchHiddenFields = false;
 bool searchAndReplace = false;
 bool replaceReferences = false;
 
 try
 {
 const SCH_SEARCH_DATA& schSearchData = dynamic_cast<const SCH_SEARCH_DATA&>( aSearchData ); // downcast
 searchHiddenFields = schSearchData.searchAllFields;
 searchAndReplace = schSearchData.searchAndReplace;
 replaceReferences = schSearchData.replaceReferences;
 }
 catch( const std::bad_cast& )
 {
 }
 
 wxString text = UnescapeString( GetText() );
 
 if( !IsVisible() && !searchHiddenFields )
 return false;
 
 if( m_parent && m_parent->Type() == SCH_SYMBOL_T && m_id == REFERENCE_FIELD )
 {
 if( searchAndReplace && !replaceReferences )
 return false;
 
 SCH_SYMBOL* parentSymbol = static_cast<SCH_SYMBOL*>( m_parent );
 wxASSERT( aAuxData );
 
 // Take sheet path into account which effects the reference field and the unit for
 // symbols with multiple parts.
 if( aAuxData )
 {
 SCH_SHEET_PATH* sheet = (SCH_SHEET_PATH*) aAuxData;
 text = parentSymbol->GetRef( sheet );
 
 if( SCH_ITEM::Matches( text, aSearchData ) )
 return true;
 
 if( parentSymbol->GetUnitCount() > 1 )
 text << parentSymbol->SubReference( parentSymbol->GetUnitSelection( sheet ) );
 }
 }
 
 return SCH_ITEM::Matches( text, aSearchData );
}
 
 
void SCH_FIELD::OnScintillaCharAdded( SCINTILLA_TRICKS* aScintillaTricks,
 wxStyledTextEvent &aEvent ) const
{
 SCH_ITEM* parent = dynamic_cast<SCH_ITEM*>( GetParent() );
 SCHEMATIC* schematic = parent ? parent->Schematic() : nullptr;
 
 if( !schematic )
 return;
 
 wxStyledTextCtrl* scintilla = aScintillaTricks->Scintilla();
 int key = aEvent.GetKey();
 
 wxArrayString autocompleteTokens;
 int pos = scintilla->GetCurrentPos();
 int start = scintilla->WordStartPosition( pos, true );
 wxString partial;
 
 // Multi-line fields are not allowed. So remove '\n' if entered.
 if( key == '\n' )
 {
 wxString text = scintilla->GetText();
 int currpos = scintilla->GetCurrentPos();
 text.Replace( wxS( "\n" ), wxS( "" ) );
 scintilla->SetText( text );
 scintilla->GotoPos( currpos-1 );
 return;
 }
 
 auto textVarRef =
 [&]( int pt )
 {
 return pt >= 2
 && scintilla->GetCharAt( pt - 2 ) == '$'
 && scintilla->GetCharAt( pt - 1 ) == '{';
 };
 
 // Check for cross-reference
 if( start > 1 && scintilla->GetCharAt( start - 1 ) == ':' )
 {
 int refStart = scintilla->WordStartPosition( start - 1, true );
 
 if( textVarRef( refStart ) )
 {
 partial = scintilla->GetRange( start, pos );
 
 wxString ref = scintilla->GetRange( refStart, start - 1 );
 
 if( ref == wxS( "OP" ) )
 {
 // SPICE operating points use ':' syntax for ports
 if( SCH_SYMBOL* symbol = dynamic_cast<SCH_SYMBOL*>( parent ) )
 {
 NULL_REPORTER devnull;
 SCH_SHEET_PATH& sheet = schematic->CurrentSheet();
 SIM_LIB_MGR mgr( &schematic->Prj() );
 SIM_MODEL& model = mgr.CreateModel( &sheet, *symbol, devnull ).model;
 
 for( wxString pin : model.GetPinNames() )
 {
 if( pin.StartsWith( '<' ) && pin.EndsWith( '>' ) )
 autocompleteTokens.push_back( pin.Mid( 1, pin.Length() - 2 ) );
 else
 autocompleteTokens.push_back( pin );
 }
 }
 }
 else
 {
 SCH_SHEET_LIST sheets = schematic->GetSheets();
 SCH_REFERENCE_LIST refs;
 SCH_SYMBOL* refSymbol = nullptr;
 
 sheets.GetSymbols( refs );
 
 for( size_t jj = 0; jj < refs.GetCount(); jj++ )
 {
 if( refs[ jj ].GetSymbol()->GetRef( &refs[ jj ].GetSheetPath(), true ) == ref )
 {
 refSymbol = refs[ jj ].GetSymbol();
 break;
 }
 }
 
 if( refSymbol )
 refSymbol->GetContextualTextVars( &autocompleteTokens );
 }
 }
 }
 else if( textVarRef( start ) )
 {
 partial = scintilla->GetTextRange( start, pos );
 
 SCH_SYMBOL* symbol = dynamic_cast<SCH_SYMBOL*>( parent );
 SCH_SHEET* sheet = dynamic_cast<SCH_SHEET*>( parent );
 SCH_LABEL_BASE* label = dynamic_cast<SCH_LABEL_BASE*>( parent );
 
 if( symbol )
 {
 symbol->GetContextualTextVars( &autocompleteTokens );
 
 if( schematic->CurrentSheet().Last() )
 schematic->CurrentSheet().Last()->GetContextualTextVars( &autocompleteTokens );
 }
 
 if( sheet )
 sheet->GetContextualTextVars( &autocompleteTokens );
 
 if( label )
 label->GetContextualTextVars( &autocompleteTokens );
 
 for( std::pair<wxString, wxString> entry : schematic->Prj().GetTextVars() )
 autocompleteTokens.push_back( entry.first );
 }
 
 aScintillaTricks->DoAutocomplete( partial, autocompleteTokens );
 scintilla->SetFocus();
}
 
 
bool SCH_FIELD::IsReplaceable() const
{
 if( m_parent && m_parent->Type() == SCH_SHEET_T )
 {
 // See comments in SCH_FIELD::Replace(), below.
 if( m_id == SHEETFILENAME )
 return false;
 }
 else if( m_parent && m_parent->Type() == SCH_GLOBAL_LABEL_T )
 {
 if( m_id == 0 /* IntersheetRefs */ )
 return false;
 }
 
 return true;
}
 
 
bool SCH_FIELD::Replace( const EDA_SEARCH_DATA& aSearchData, void* aAuxData )
{
 bool replaceReferences = false;
 
 try
 {
 const SCH_SEARCH_DATA& schSearchData = dynamic_cast<const SCH_SEARCH_DATA&>( aSearchData );
 replaceReferences = schSearchData.replaceReferences;
 }
 catch( const std::bad_cast& )
 {
 }
 
 wxString text;
 bool isReplaced = false;
 
 if( m_parent && m_parent->Type() == SCH_SYMBOL_T )
 {
 SCH_SYMBOL* parentSymbol = static_cast<SCH_SYMBOL*>( m_parent );
 
 switch( m_id )
 {
 case REFERENCE_FIELD:
 wxCHECK_MSG( aAuxData, false, wxT( "Need sheetpath to replace in refdes." ) );
 
 if( !replaceReferences )
 return false;
 
 text = parentSymbol->GetRef( (SCH_SHEET_PATH*) aAuxData );
 isReplaced = EDA_ITEM::Replace( aSearchData, text );
 
 if( isReplaced )
 parentSymbol->SetRef( (SCH_SHEET_PATH*) aAuxData, text );
 
 break;
 
 case VALUE_FIELD:
 wxCHECK_MSG( aAuxData, false, wxT( "Need sheetpath to replace in value field." ) );
 
 text = parentSymbol->GetField( VALUE_FIELD )->GetText();
 isReplaced = EDA_ITEM::Replace( aSearchData, text );
 
 if( isReplaced )
 parentSymbol->SetValueFieldText( text );
 
 break;
 
 case FOOTPRINT_FIELD:
 wxCHECK_MSG( aAuxData, false, wxT( "Need sheetpath to replace in footprint field." ) );
 
 text = parentSymbol->GetField( FOOTPRINT_FIELD )->GetText();
 isReplaced = EDA_ITEM::Replace( aSearchData, text );
 
 if( isReplaced )
 parentSymbol->SetFootprintFieldText( text );
 
 break;
 
 default:
 isReplaced = EDA_TEXT::Replace( aSearchData );
 }
 }
 else if( m_parent && m_parent->Type() == SCH_SHEET_T )
 {
 isReplaced = EDA_TEXT::Replace( aSearchData );
 
 if( m_id == SHEETFILENAME && isReplaced )
 {
 // If we allowed this we'd have a bunch of work to do here, including warning
 // about it not being undoable, checking for recursive hierarchies, reloading
 // sheets, etc. See DIALOG_SHEET_PROPERTIES::TransferDataFromWindow().
 }
 }
 else
 {
 isReplaced = EDA_TEXT::Replace( aSearchData );
 }
 
 return isReplaced;
}
 
 
void SCH_FIELD::Rotate( const VECTOR2I& aCenter, bool aRotateCCW )
{
 VECTOR2I pt = GetPosition();
 RotatePoint( pt, aCenter, aRotateCCW ? ANGLE_270 : ANGLE_90 );
 SetPosition( pt );
 
 SetTextAngle( GetTextAngle() != ANGLE_HORIZONTAL ? ANGLE_HORIZONTAL : ANGLE_VERTICAL );
}
 
 
void SCH_FIELD::MirrorHorizontally( int aCenter )
{
 int x = GetTextPos().x;
 
 x -= aCenter;
 x *= -1;
 x += aCenter;
 
 SetTextX( x );
}
 
 
void SCH_FIELD::MirrorVertically( int aCenter )
{
 int y = GetTextPos().y;
 
 y -= aCenter;
 y *= -1;
 y += aCenter;
 
 SetTextY( y );
}
 
 
void SCH_FIELD::BeginEdit( const VECTOR2I& aPosition )
{
 SetTextPos( aPosition );
}
 
 
void SCH_FIELD::CalcEdit( const VECTOR2I& aPosition )
{
 SetTextPos( aPosition );
}
 
 
wxString SCH_FIELD::GetItemDescription( UNITS_PROVIDER* aUnitsProvider ) const
{
 return wxString::Format( "%s '%s'", UnescapeString( GetName() ), KIUI::EllipsizeMenuText( GetText() ) );
}
 
 
void SCH_FIELD::GetMsgPanelInfo( EDA_DRAW_FRAME* aFrame, std::vector<MSG_PANEL_ITEM>& aList )
{
 wxString msg;
 
 aList.emplace_back( _( "Symbol Field" ), UnescapeString( GetName() ) );
 
 // Don't use GetShownText() here; we want to show the user the variable references
 aList.emplace_back( _( "Text" ), KIUI::EllipsizeStatusText( aFrame, GetText() ) );
 
 aList.emplace_back( _( "Visible" ), IsVisible() ? _( "Yes" ) : _( "No" ) );
 
 aList.emplace_back( _( "Font" ), GetFont() ? GetFont()->GetName() : _( "Default" ) );
 
 aList.emplace_back( _( "Style" ), GetTextStyleName() );
 
 aList.emplace_back( _( "Text Size" ), aFrame->MessageTextFromValue( GetTextWidth() ) );
 
 switch ( GetHorizJustify() )
 {
 case GR_TEXT_H_ALIGN_LEFT: msg = _( "Left" ); break;
 case GR_TEXT_H_ALIGN_CENTER: msg = _( "Center" ); break;
 case GR_TEXT_H_ALIGN_RIGHT: msg = _( "Right" ); break;
 case GR_TEXT_H_ALIGN_INDETERMINATE: msg = INDETERMINATE_STATE; break;
 }
 
 aList.emplace_back( _( "H Justification" ), msg );
 
 switch ( GetVertJustify() )
 {
 case GR_TEXT_V_ALIGN_TOP: msg = _( "Top" ); break;
 case GR_TEXT_V_ALIGN_CENTER: msg = _( "Center" ); break;
 case GR_TEXT_V_ALIGN_BOTTOM: msg = _( "Bottom" ); break;
 case GR_TEXT_V_ALIGN_INDETERMINATE: msg = INDETERMINATE_STATE; break;
 }
 
 aList.emplace_back( _( "V Justification" ), msg );
}
 
 
void SCH_FIELD::DoHypertextAction( EDA_DRAW_FRAME* aFrame ) const
{
 constexpr int START_ID = 1;
 
 if( IsHypertext() )
 {
 SCH_LABEL_BASE* label = static_cast<SCH_LABEL_BASE*>( m_parent );
 SCH_SHEET_PATH* sheet = &label->Schematic()->CurrentSheet();
 wxMenu menu;
 wxString href;
 
 std::vector<std::pair<wxString, wxString>> pages;
 
 label->GetIntersheetRefs( sheet, &pages );
 
 for( int i = 0; i < (int) pages.size(); ++i )
 {
 menu.Append( i + START_ID, wxString::Format( _( "Go to Page %s (%s)" ),
 pages[i].first,
 pages[i].second ) );
 }
 
 menu.AppendSeparator();
 menu.Append( 999 + START_ID, _( "Back to Previous Selected Sheet" ) );
 
 int sel = aFrame->GetPopupMenuSelectionFromUser( menu ) - START_ID;
 
 if( sel >= 0 && sel < (int) pages.size() )
 href = wxT( "#" ) + pages[ sel ].first;
 else if( sel == 999 )
 href = SCH_NAVIGATE_TOOL::g_BackLink;
 
 if( !href.IsEmpty() )
 {
 SCH_NAVIGATE_TOOL* navTool = aFrame->GetToolManager()->GetTool<SCH_NAVIGATE_TOOL>();
 navTool->HypertextCommand( href );
 }
 }
}
 
 
void SCH_FIELD::SetName( const wxString& aName )
{
 m_name = aName;
 m_isNamedVariable = m_name.StartsWith( wxT( "${" ) );
 
 if( m_isNamedVariable )
 EDA_TEXT::SetText( aName );
}
 
 
void SCH_FIELD::SetText( const wxString& aText )
{
 // Don't allow modification of text value when using named variables
 // as field name.
 if( m_isNamedVariable )
 return;
 
 EDA_TEXT::SetText( aText );
}
 
 
wxString SCH_FIELD::GetName( bool aUseDefaultName ) const
{
 if( m_parent && ( m_parent->Type() == SCH_SYMBOL_T || m_parent->Type() == LIB_SYMBOL_T ) )
 {
 if( IsMandatory() )
 return GetCanonicalFieldName( m_id );
 else if( m_name.IsEmpty() && aUseDefaultName )
 return TEMPLATE_FIELDNAME::GetDefaultFieldName( m_id );
 }
 else if( m_parent && m_parent->Type() == SCH_SHEET_T )
 {
 if( IsMandatory() )
 return SCH_SHEET::GetDefaultFieldName( m_id );
 else if( m_name.IsEmpty() && aUseDefaultName )
 return SCH_SHEET::GetDefaultFieldName( m_id );
 }
 else if( m_parent && m_parent->IsType( { SCH_LABEL_LOCATE_ANY_T } ) )
 {
 return SCH_LABEL_BASE::GetDefaultFieldName( m_name, aUseDefaultName );
 }
 
 return m_name;
}
 
 
wxString SCH_FIELD::GetCanonicalName() const
{
 if( m_parent && ( m_parent->Type() == SCH_SYMBOL_T || m_parent->Type() == LIB_SYMBOL_T ) )
 {
 if( IsMandatory() )
 return GetCanonicalFieldName( m_id );
 }
 else if( m_parent && m_parent->Type() == SCH_SHEET_T )
 {
 if( m_id == SHEETNAME )
 return wxT( "Sheetname" );
 else if( m_id == SHEETFILENAME )
 return wxT( "Sheetfile" );
 }
 else if( m_parent && m_parent->IsType( { SCH_LABEL_LOCATE_ANY_T } ) )
 {
 // These should be stored in canonical format, but just in case:
 if( m_name == _( "Net Class" ) || m_name == wxT( "Net Class" ) )
 {
 return wxT( "Netclass" );
 }
 else if( m_name == _( "Sheet References" )
 || m_name == wxT( "Sheet References" )
 || m_name == wxT( "Intersheet References" ) )
 {
 return wxT( "Intersheetrefs" );
 }
 }
 
 return m_name;
}
 
 
BITMAPS SCH_FIELD::GetMenuImage() const
{
 if( m_parent && ( m_parent->Type() == SCH_SYMBOL_T || m_parent->Type() == LIB_SYMBOL_T ) )
 {
 switch( m_id )
 {
 case REFERENCE_FIELD: return BITMAPS::edit_comp_ref;
 case VALUE_FIELD: return BITMAPS::edit_comp_value;
 case FOOTPRINT_FIELD: return BITMAPS::edit_comp_footprint;
 default: return BITMAPS::text;
 }
 }
 
 return BITMAPS::text;
}
 
 
bool SCH_FIELD::HitTest( const VECTOR2I& aPosition, int aAccuracy ) const
{
 if( GetShownText( true ).IsEmpty() )
 return false;
 
 BOX2I rect = GetBoundingBox();
 
 // Text in symbol editor can have additional chars (ie: reference designators U? or U?A)
 if( m_parent && m_parent->Type() == LIB_SYMBOL_T )
 {
 SCH_FIELD temp( *this );
 temp.SetText( GetFullText() );
 rect = temp.GetBoundingBox();
 }
 
 rect.Inflate( aAccuracy );
 
 if( m_parent && m_parent->Type() == SCH_GLOBAL_LABEL_T )
 {
 SCH_GLOBALLABEL* label = static_cast<SCH_GLOBALLABEL*>( GetParent() );
 rect.Offset( label->GetSchematicTextOffset( nullptr ) );
 }
 
 return rect.Contains( aPosition );
}
 
 
bool SCH_FIELD::HitTest( const BOX2I& aRect, bool aContained, int aAccuracy ) const
{
 if( GetShownText( true ).IsEmpty() )
 return false;
 
 if( m_flags & (STRUCT_DELETED | SKIP_STRUCT ) )
 return false;
 
 BOX2I rect = aRect;
 
 rect.Inflate( aAccuracy );
 
 if( GetParent() && GetParent()->Type() == SCH_GLOBAL_LABEL_T )
 {
 SCH_GLOBALLABEL* label = static_cast<SCH_GLOBALLABEL*>( GetParent() );
 rect.Offset( label->GetSchematicTextOffset( nullptr ) );
 }
 
 if( aContained )
 return rect.Contains( GetBoundingBox() );
 
 return rect.Intersects( GetBoundingBox() );
}
 
 
void SCH_FIELD::Plot( PLOTTER* aPlotter, bool aBackground, const SCH_PLOT_OPTS& aPlotOpts,
 int aUnit, int aBodyStyle, const VECTOR2I& aOffset, bool aDimmed )
{
 wxString text;
 
 if( Schematic() )
 text = GetShownText( &Schematic()->CurrentSheet(), true );
 else
 text = GetShownText( true );
 
 if( ( !IsVisible() && !IsForceVisible() ) || text.IsEmpty() || aBackground )
 return;
 
 SCH_RENDER_SETTINGS* renderSettings = getRenderSettings( aPlotter );
 COLOR4D color = renderSettings->GetLayerColor( GetLayer() );
 int penWidth = GetEffectiveTextPenWidth( renderSettings->GetDefaultPenWidth() );
 
 COLOR4D bg = renderSettings->GetBackgroundColor();;
 
 if( bg == COLOR4D::UNSPECIFIED || !aPlotter->GetColorMode() )
 bg = COLOR4D::WHITE;
 
 if( aPlotter->GetColorMode() && GetTextColor() != COLOR4D::UNSPECIFIED )
 color = GetTextColor();
 
 if( aDimmed )
 {
 color.Desaturate( );
 color = color.Mix( bg, 0.5f );
 }
 
 penWidth = std::max( penWidth, renderSettings->GetMinPenWidth() );
 
 // clamp the pen width to be sure the text is readable
 penWidth = std::min( penWidth, std::min( GetTextSize().x, GetTextSize().y ) / 4 );
 
 if( !IsVisible() && !renderSettings->m_ShowHiddenFields )
 return;
 
 // Calculate the text orientation, according to the symbol orientation/mirror
 EDA_ANGLE orient = GetTextAngle();
 VECTOR2I textpos = GetTextPos();
 GR_TEXT_H_ALIGN_T hjustify = GetHorizJustify();
 GR_TEXT_V_ALIGN_T vjustify = GetVertJustify();
 
 if( renderSettings->m_Transform.y1 ) // Rotate symbol 90 deg.
 {
 if( orient.IsHorizontal() )
 orient = ANGLE_VERTICAL;
 else
 orient = ANGLE_HORIZONTAL;
 }
 
 if( m_parent && m_parent->Type() == SCH_SYMBOL_T )
 {
 /*
 * Calculate the text justification, according to the symbol orientation/mirror. This is
 * a bit complicated due to cumulative calculations:
 * - numerous cases (mirrored or not, rotation)
 * - the plotter's Text() function will also recalculate H and V justifications according
 * to the text orientation
 * - when a symbol is mirrored the text is not, and justifications become a nightmare
 *
 * So the easier way is to use no justifications (centered text) and use GetBoundingBox
 * to know the text coordinate considered as centered.
 */
 hjustify = GR_TEXT_H_ALIGN_CENTER;
 vjustify = GR_TEXT_V_ALIGN_CENTER;
 textpos = GetBoundingBox().Centre();
 }
 else if( m_parent && m_parent->Type() == SCH_GLOBAL_LABEL_T )
 {
 SCH_GLOBALLABEL* label = static_cast<SCH_GLOBALLABEL*>( m_parent );
 textpos += label->GetSchematicTextOffset( renderSettings );
 }
 
 KIFONT::FONT* font = GetFont();
 
 if( !font )
 font = KIFONT::FONT::GetFont( renderSettings->GetDefaultFont(), IsBold(), IsItalic() );
 
 TEXT_ATTRIBUTES attrs = GetAttributes();
 attrs.m_StrokeWidth = penWidth;
 attrs.m_Halign = hjustify;
 attrs.m_Valign = vjustify;
 attrs.m_Angle = orient;
 attrs.m_Multiline = false;
 
 aPlotter->PlotText( textpos, color, text, attrs, font, GetFontMetrics() );
 
 if( IsHypertext() && Schematic() )
 {
 SCH_LABEL_BASE* label = static_cast<SCH_LABEL_BASE*>( m_parent );
 std::vector<std::pair<wxString, wxString>> pages;
 std::vector<wxString> pageHrefs;
 BOX2I bbox = GetBoundingBox();
 
 wxCHECK( label, /* void */ );
 
 label->GetIntersheetRefs( &Schematic()->CurrentSheet(), &pages );
 
 for( const auto& [ pageNumber, sheetName ] : pages )
 pageHrefs.push_back( wxT( "#" ) + pageNumber );
 
 bbox.Offset( label->GetSchematicTextOffset( renderSettings ) );
 
 aPlotter->HyperlinkMenu( bbox, pageHrefs );
 }
}
 
 
void SCH_FIELD::SetPosition( const VECTOR2I& aPosition )
{
 // Actual positions are calculated by the rotation/mirror transform of the parent symbol
 // of the field. The inverse transform is used to calculate the position relative to the
 // parent symbol.
 if( m_parent && m_parent->Type() == SCH_SYMBOL_T )
 {
 SCH_SYMBOL* parentSymbol = static_cast<SCH_SYMBOL*>( m_parent );
 VECTOR2I relPos = aPosition - parentSymbol->GetPosition();
 
 relPos = parentSymbol->GetTransform().InverseTransform().TransformCoordinate( relPos );
 
 SetTextPos( relPos + parentSymbol->GetPosition() );
 return;
 }
 
 SetTextPos( aPosition );
}
 
 
VECTOR2I SCH_FIELD::GetPosition() const
{
 if( m_parent && m_parent->Type() == SCH_SYMBOL_T )
 {
 SCH_SYMBOL* parentSymbol = static_cast<SCH_SYMBOL*>( m_parent );
 VECTOR2I relativePos = GetTextPos() - parentSymbol->GetPosition();
 
 relativePos = parentSymbol->GetTransform().TransformCoordinate( relativePos );
 
 return relativePos + parentSymbol->GetPosition();
 }
 
 return GetTextPos();
}
 
 
VECTOR2I SCH_FIELD::GetParentPosition() const
{
 return m_parent ? m_parent->GetPosition() : VECTOR2I( 0, 0 );
}
 
 
bool SCH_FIELD::IsMandatory() const
{
 if( m_parent && m_parent->Type() == SCH_SHEET_T )
 return m_id >= 0 && m_id < SHEET_MANDATORY_FIELDS;
 else
 return m_id >= 0 && m_id < MANDATORY_FIELDS;
}
 
 
bool SCH_FIELD::operator<( const SCH_ITEM& aItem ) const
{
 if( Type() != aItem.Type() )
 return Type() < aItem.Type();
 
 auto field = static_cast<const SCH_FIELD*>( &aItem );
 
 if( GetId() != field->GetId() )
 return GetId() < field->GetId();
 
 if( GetText() != field->GetText() )
 return GetText() < field->GetText();
 
 if( GetLibPosition().x != field->GetLibPosition().x )
 return GetLibPosition().x < field->GetLibPosition().x;
 
 if( GetLibPosition().y != field->GetLibPosition().y )
 return GetLibPosition().y < field->GetLibPosition().y;
 
 return GetName() < field->GetName();
}
 
 
bool SCH_FIELD::operator==(const SCH_ITEM& aOther) const
{
 if( Type() != aOther.Type() )
 return false;
 
 const SCH_FIELD& field = static_cast<const SCH_FIELD&>( aOther );
 
 return *this == field;
}
 
 
bool SCH_FIELD::operator==( const SCH_FIELD& aOther ) const
{
 // Identical fields of different symbols are not equal.
 if( !GetParentSymbol() || !aOther.GetParentSymbol()
 || GetParentSymbol()->m_Uuid != aOther.GetParentSymbol()->m_Uuid )
 {
 return false;
 }
 
 if( GetId() != aOther.GetId() )
 return false;
 
 if( GetPosition() != aOther.GetPosition() )
 return false;
 
 if( IsNamedVariable() != aOther.IsNamedVariable() )
 return false;
 
 if( IsNameShown() != aOther.IsNameShown() )
 return false;
 
 if( CanAutoplace() != aOther.CanAutoplace() )
 return false;
 
 return EDA_TEXT::operator==( aOther );
}
 
 
double SCH_FIELD::Similarity( const SCH_ITEM& aOther ) const
{
 if( Type() != aOther.Type() )
 return 0.0;
 
 if( m_Uuid == aOther.m_Uuid )
 return 1.0;
 
 const SCH_FIELD& field = static_cast<const SCH_FIELD&>( aOther );
 
 double similarity = 0.99; // The UUIDs are different, so we start with non-identity
 
 if( GetId() != field.GetId() )
 {
 // We don't allow swapping of mandatory fields, so these cannot be the same item
 if( GetId() < MANDATORY_FIELDS || field.GetId() < MANDATORY_FIELDS )
 return 0.0;
 else
 similarity *= 0.5;
 }
 
 similarity *= SimilarityBase( aOther );
 
 similarity *= EDA_TEXT::Similarity( field );
 
 if( GetPosition() != field.GetPosition() )
 similarity *= 0.5;
 
 if( IsNamedVariable() != field.IsNamedVariable() )
 similarity *= 0.5;
 
 if( IsNameShown() != field.IsNameShown() )
 similarity *= 0.5;
 
 if( CanAutoplace() != field.CanAutoplace() )
 similarity *= 0.5;
 
 return similarity;
}
 
 
int SCH_FIELD::compare( const SCH_ITEM& aOther, int aCompareFlags ) const
{
 wxASSERT( aOther.Type() == SCH_FIELD_T );
 
 int compareFlags = aCompareFlags;
 
 // For ERC tests, the field position has no matter, so do not test it
 if( aCompareFlags & SCH_ITEM::COMPARE_FLAGS::ERC )
 compareFlags |= SCH_ITEM::COMPARE_FLAGS::SKIP_TST_POS;
 
 int retv = SCH_ITEM::compare( aOther, compareFlags );
 
 if( retv )
 return retv;
 
 const SCH_FIELD* tmp = static_cast<const SCH_FIELD*>( &aOther );
 
 // Equality test will vary depending whether or not the field is mandatory. Otherwise,
 // sorting is done by ordinal.
 if( aCompareFlags & SCH_ITEM::COMPARE_FLAGS::EQUALITY )
 {
 // Mandatory fields have fixed ordinals and their names can vary due to translated field
 // names. Optional fields have fixed names and their ordinals can vary.
 if( IsMandatory() )
 {
 if( m_id != tmp->m_id )
 return m_id - tmp->m_id;
 }
 else
 {
 retv = m_name.Cmp( tmp->m_name );
 
 if( retv )
 return retv;
 }
 }
 else // assume we're sorting
 {
 if( m_id != tmp->m_id )
 return m_id - tmp->m_id;
 }
 
 bool ignoreFieldText = false;
 
 if( m_id == REFERENCE_FIELD && !( aCompareFlags & SCH_ITEM::COMPARE_FLAGS::EQUALITY ) )
 ignoreFieldText = true;
 
 if( m_id == VALUE_FIELD && ( aCompareFlags & SCH_ITEM::COMPARE_FLAGS::ERC ) )
 ignoreFieldText = true;
 
 if( !ignoreFieldText )
 {
 retv = GetText().CmpNoCase( tmp->GetText() );
 
 if( retv != 0 )
 return retv;
 }
 
 if( aCompareFlags & SCH_ITEM::COMPARE_FLAGS::EQUALITY )
 {
 if( GetTextPos().x != tmp->GetTextPos().x )
 return GetTextPos().x - tmp->GetTextPos().x;
 
 if( GetTextPos().y != tmp->GetTextPos().y )
 return GetTextPos().y - tmp->GetTextPos().y;
 }
 
 // For ERC tests, the field size has no matter, so do not test it
 if( !( aCompareFlags & SCH_ITEM::COMPARE_FLAGS::ERC ) )
 {
 if( GetTextWidth() != tmp->GetTextWidth() )
 return GetTextWidth() - tmp->GetTextWidth();
 
 if( GetTextHeight() != tmp->GetTextHeight() )
 return GetTextHeight() - tmp->GetTextHeight();
 }
 
 return 0;
}
 
 
static struct SCH_FIELD_DESC
{
 SCH_FIELD_DESC()
 {
 PROPERTY_MANAGER& propMgr = PROPERTY_MANAGER::Instance();
 REGISTER_TYPE( SCH_FIELD );
 propMgr.AddTypeCast( new TYPE_CAST<SCH_FIELD, SCH_ITEM> );
 propMgr.AddTypeCast( new TYPE_CAST<SCH_FIELD, EDA_TEXT> );
 propMgr.InheritsAfter( TYPE_HASH( SCH_FIELD ), TYPE_HASH( SCH_ITEM ) );
 propMgr.InheritsAfter( TYPE_HASH( SCH_FIELD ), TYPE_HASH( EDA_TEXT ) );
 
 propMgr.AddProperty( new PROPERTY<SCH_FIELD, bool>( _HKI( "Show Field Name" ),
 &SCH_FIELD::SetNameShown, &SCH_FIELD::IsNameShown ) );
 
 propMgr.AddProperty( new PROPERTY<SCH_FIELD, bool>( _HKI( "Allow Autoplacement" ),
 &SCH_FIELD::SetCanAutoplace, &SCH_FIELD::CanAutoplace ) );
 
 propMgr.Mask( TYPE_HASH( SCH_FIELD ), TYPE_HASH( EDA_TEXT ), _HKI( "Hyperlink" ) );
 propMgr.Mask( TYPE_HASH( SCH_FIELD ), TYPE_HASH( EDA_TEXT ), _HKI( "Thickness" ) );
 propMgr.Mask( TYPE_HASH( SCH_FIELD ), TYPE_HASH( EDA_TEXT ), _HKI( "Mirrored" ) );
 propMgr.Mask( TYPE_HASH( SCH_FIELD ), TYPE_HASH( EDA_TEXT ), _HKI( "Width" ) );
 propMgr.Mask( TYPE_HASH( SCH_FIELD ), TYPE_HASH( EDA_TEXT ), _HKI( "Height" ) );
 
 propMgr.AddProperty( new PROPERTY<SCH_FIELD, int>( _HKI( "Text Size" ),
 &SCH_FIELD::SetSchTextSize, &SCH_FIELD::GetSchTextSize, PROPERTY_DISPLAY::PT_SIZE ),
 _HKI( "Text Properties" ) );
 
 propMgr.Mask( TYPE_HASH( SCH_FIELD ), TYPE_HASH( EDA_TEXT ), _HKI( "Orientation" ) );
 
 auto isNotNamedVariable =
 []( INSPECTABLE* aItem ) -> bool
 {
 if( SCH_FIELD* field = dynamic_cast<SCH_FIELD*>( aItem ) )
 return !field->IsNamedVariable();
 
 return true;
 };
 
 propMgr.OverrideWriteability( TYPE_HASH( SCH_FIELD ), TYPE_HASH( EDA_TEXT ), _HKI( "Text" ),
 isNotNamedVariable );
 }
} _SCH_FIELD_DESC;