sch_label.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2016 Jean-Pierre Charras, jp.charras at wanadoo.fr
 * Copyright (C) 2015 Wayne Stambaugh <[email protected]>
 * Copyright The 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, see <https://www.gnu.org/licenses/>.
 */
 
#include <connectivity/conn_presentation.h>
#include <advanced_config.h>
#include <connectivity/conn_facade.h>
#include <wx/thread.h>
#include <connectivity/conn_text.h>
#include <base_units.h>
#include <increment.h>
#include <pgm_base.h>
#include <sch_edit_frame.h>
#include <sch_plotter.h>
#include <widgets/msgpanel.h>
#include <bitmaps.h>
#include <string_utils.h>
#include <geometry/geometry_utils.h>
#include <schematic.h>
#include <sch_screen.h>
#include <sch_sheet.h>
#include <sch_sheet_pin.h>
#include <settings/color_settings.h>
#include <sch_painter.h>
#include <default_values.h>
#include <wx/debug.h>
#include <wx/log.h>
#include <dialogs/html_message_box.h>
#include <project/project_file.h>
#include <project/net_settings.h>
#include <core/kicad_algo.h>
#include <core/mirror.h>
#include <algorithm>
#include <trigo.h>
#include <sch_label.h>
#include <sch_rule_area.h>
#include <magic_enum.hpp>
#include <api/api_enums.h>
#include <api/api_utils.h>
#include <api/schematic/schematic_types.pb.h>
#include <properties/property.h>
#include <properties/property_mgr.h>
 
 
/* Coding polygons for global symbol graphic shapes.
 *  the first parml is the number of corners
 *  others are the corners coordinates in reduced units
 *  the real coordinate is the reduced coordinate * text half size
 */
static int TemplateIN_HN[] = { 6, 0, 0, -1, -1, -2, -1, -2, 1, -1, 1, 0, 0 };
static int TemplateIN_HI[] = { 6, 0, 0, 1, 1, 2, 1, 2, -1, 1, -1, 0, 0 };
static int TemplateIN_UP[] = { 6, 0, 0, 1, -1, 1, -2, -1, -2, -1, -1, 0, 0 };
static int TemplateIN_BOTTOM[] = { 6, 0, 0, 1, 1, 1, 2, -1, 2, -1, 1, 0, 0 };
 
static int TemplateOUT_HN[] = { 6, -2, 0, -1, 1, 0, 1, 0, -1, -1, -1, -2, 0 };
static int TemplateOUT_HI[] = { 6, 2, 0, 1, -1, 0, -1, 0, 1, 1, 1, 2, 0 };
static int TemplateOUT_UP[] = { 6, 0, -2, 1, -1, 1, 0, -1, 0, -1, -1, 0, -2 };
static int TemplateOUT_BOTTOM[] = { 6, 0, 2, 1, 1, 1, 0, -1, 0, -1, 1, 0, 2 };
 
static int TemplateUNSPC_HN[] = { 5, 0, -1, -2, -1, -2, 1, 0, 1, 0, -1 };
static int TemplateUNSPC_HI[] = { 5, 0, -1, 2, -1, 2, 1, 0, 1, 0, -1 };
static int TemplateUNSPC_UP[] = { 5, 1, 0, 1, -2, -1, -2, -1, 0, 1, 0 };
static int TemplateUNSPC_BOTTOM[] = { 5, 1, 0, 1, 2, -1, 2, -1, 0, 1, 0 };
 
static int TemplateBIDI_HN[] = { 5, 0, 0, -1, -1, -2, 0, -1, 1, 0, 0 };
static int TemplateBIDI_HI[] = { 5, 0, 0, 1, -1, 2, 0, 1, 1, 0, 0 };
static int TemplateBIDI_UP[] = { 5, 0, 0, -1, -1, 0, -2, 1, -1, 0, 0 };
static int TemplateBIDI_BOTTOM[] = { 5, 0, 0, -1, 1, 0, 2, 1, 1, 0, 0 };
 
static int Template3STATE_HN[] = { 5, 0, 0, -1, -1, -2, 0, -1, 1, 0, 0 };
static int Template3STATE_HI[] = { 5, 0, 0, 1, -1, 2, 0, 1, 1, 0, 0 };
static int Template3STATE_UP[] = { 5, 0, 0, -1, -1, 0, -2, 1, -1, 0, 0 };
static int Template3STATE_BOTTOM[] = { 5, 0, 0, -1, 1, 0, 2, 1, 1, 0, 0 };
 
static int* TemplateShape[5][4] = { { TemplateIN_HN, TemplateIN_UP, TemplateIN_HI, TemplateIN_BOTTOM },
                                    { TemplateOUT_HN, TemplateOUT_UP, TemplateOUT_HI, TemplateOUT_BOTTOM },
                                    { TemplateBIDI_HN, TemplateBIDI_UP, TemplateBIDI_HI, TemplateBIDI_BOTTOM },
                                    { Template3STATE_HN, Template3STATE_UP, Template3STATE_HI, Template3STATE_BOTTOM },
                                    { TemplateUNSPC_HN, TemplateUNSPC_UP, TemplateUNSPC_HI, TemplateUNSPC_BOTTOM } };
 
 
wxString getElectricalTypeLabel( LABEL_FLAG_SHAPE aType )
{
    switch( aType )
    {
    case LABEL_FLAG_SHAPE::L_INPUT: return _( "Input" );
    case LABEL_FLAG_SHAPE::L_OUTPUT: return _( "Output" );
    case LABEL_FLAG_SHAPE::L_BIDI: return _( "Bidirectional" );
    case LABEL_FLAG_SHAPE::L_TRISTATE: return _( "Tri-State" );
    case LABEL_FLAG_SHAPE::L_UNSPECIFIED: return _( "Passive" );
    default: return wxT( "???" );
    }
}
 
 
SPIN_STYLE SPIN_STYLE::RotateCCW()
{
    SPIN newSpin = m_spin;
 
    switch( m_spin )
    {
    case SPIN_STYLE::LEFT: newSpin = SPIN_STYLE::BOTTOM; break;
    case SPIN_STYLE::BOTTOM: newSpin = SPIN_STYLE::RIGHT; break;
    case SPIN_STYLE::RIGHT: newSpin = SPIN_STYLE::UP; break;
    case SPIN_STYLE::UP: newSpin = SPIN_STYLE::LEFT; break;
    }
 
    return SPIN_STYLE( newSpin );
}
 
 
SPIN_STYLE SPIN_STYLE::MirrorX()
{
    SPIN newSpin = m_spin;
 
    switch( m_spin )
    {
    case SPIN_STYLE::UP: newSpin = SPIN_STYLE::BOTTOM; break;
    case SPIN_STYLE::BOTTOM: newSpin = SPIN_STYLE::UP; break;
    case SPIN_STYLE::LEFT: break;
    case SPIN_STYLE::RIGHT: break;
    }
 
    return SPIN_STYLE( newSpin );
}
 
 
SPIN_STYLE SPIN_STYLE::MirrorY()
{
    SPIN newSpin = m_spin;
 
    switch( m_spin )
    {
    case SPIN_STYLE::LEFT: newSpin = SPIN_STYLE::RIGHT; break;
    case SPIN_STYLE::RIGHT: newSpin = SPIN_STYLE::LEFT; break;
    case SPIN_STYLE::UP: break;
    case SPIN_STYLE::BOTTOM: break;
    }
 
    return SPIN_STYLE( newSpin );
}
 
 
unsigned SPIN_STYLE::CCWRotationsTo( const SPIN_STYLE& aOther ) const
{
    return ( ( (int) m_spin - (int) aOther.m_spin ) % 4 + 4 ) % 4;
}
 
 
SCH_LABEL_BASE::SCH_LABEL_BASE( const VECTOR2I& aPos, const wxString& aText, KICAD_T aType ) :
        SCH_TEXT( aPos, aText, LAYER_NOTES, aType ),
        m_shape( L_UNSPECIFIED ),
        m_connectionType( CONNECTION_TYPE::NONE ),
        m_isDangling( true ),
        m_autoRotateOnPlacement( false ),
        m_lastResolvedColor( COLOR4D::UNSPECIFIED )
{
    SetMultilineAllowed( false );
 
    if( !HasTextVars() )
        m_cached_driver_name = EscapeString( EDA_TEXT::GetShownText( FOR_NETNAME ), CTX_NETNAME );
}
 
 
SCH_LABEL_BASE::SCH_LABEL_BASE( const SCH_LABEL_BASE& aLabel ) :
        SCH_TEXT( aLabel ),
        m_shape( aLabel.m_shape ),
        m_connectionType( aLabel.m_connectionType ),
        m_isDangling( aLabel.m_isDangling ),
        m_autoRotateOnPlacement( aLabel.m_autoRotateOnPlacement ),
        m_lastResolvedColor( aLabel.m_lastResolvedColor ),
        m_cached_driver_name( aLabel.m_cached_driver_name )
{
    SetMultilineAllowed( false );
 
    m_fields = aLabel.m_fields;
 
    for( SCH_FIELD& field : m_fields )
        field.SetParent( this );
}
 
 
void SCH_LABEL_BASE::SetFields( const std::vector<SCH_FIELD>& aFields )
{
    m_fields = aFields;
    invalidateConnectivity();
}
 
 
void SCH_LABEL_BASE::AddFields( const std::vector<SCH_FIELD>& aFields )
{
    if( aFields.empty() )
        return;
 
    m_fields.insert( m_fields.end(), aFields.begin(), aFields.end() );
    invalidateConnectivity();
}
 
 
void SCH_LABEL_BASE::AddField( const SCH_FIELD& aField )
{
    m_fields.push_back( aField );
    invalidateConnectivity();
}
 
 
SCH_LABEL_BASE& SCH_LABEL_BASE::operator=( const SCH_LABEL_BASE& aLabel )
{
    SCH_TEXT::operator=( aLabel );
 
    m_fields = aLabel.m_fields;
 
    for( SCH_FIELD& field : m_fields )
        field.SetParent( this );
 
    m_shape = aLabel.m_shape;
    m_connectionType = aLabel.m_connectionType;
    m_isDangling = aLabel.m_isDangling;
    m_autoRotateOnPlacement = aLabel.m_autoRotateOnPlacement;
    m_lastResolvedColor = aLabel.m_lastResolvedColor;
    m_cached_driver_name = aLabel.m_cached_driver_name;
 
    return *this;
}
 
 
const wxString SCH_LABEL_BASE::GetDefaultFieldName( const wxString& aName, bool aUseDefaultName )
{
    if( aName == wxT( "Intersheetrefs" ) )
        return _( "Sheet References" );
    else if( aName == wxT( "Netclass" ) )
        return _( "Net Class" );
    else if( aName.IsEmpty() && aUseDefaultName )
        return _( "Field" );
    else
        return aName;
}
 
 
int SCH_LABEL_BASE::GetNextFieldOrdinal() const
{
    return NextFieldOrdinal( m_fields );
}
 
 
bool SCH_LABEL_BASE::IsType( const std::vector<KICAD_T>& aScanTypes ) const
{
    static const std::vector<KICAD_T> wireAndPinTypes = { SCH_ITEM_LOCATE_WIRE_T, SCH_PIN_T };
    static const std::vector<KICAD_T> busTypes = { SCH_ITEM_LOCATE_BUS_T };
 
    if( SCH_TEXT::IsType( aScanTypes ) )
        return true;
 
    for( KICAD_T scanType : aScanTypes )
    {
        if( scanType == SCH_LABEL_LOCATE_ANY_T )
            return true;
    }
 
    SCHEMATIC* schematic = Schematic();
 
    wxCHECK_MSG( schematic, false, wxT( "No parent SCHEMATIC set for SCH_LABEL!" ) );
 
    std::vector<SCH_ITEM*>        publishedItems;
    const std::vector<SCH_ITEM*>* connectedItems = &publishedItems;
 
    // The engine never fills legacy connected items; its published adjacency replaces them
    if( ADVANCED_CFG::GetCfg().m_ConnectivityEngine && wxThread::IsMain() )
    {
        if( const auto connection = schematic->Connectivity().Connection( m_Uuid, schematic->CurrentSheet().Path() ) )
            publishedItems = connection->ConnectedItems();
    }
    else
    {
        // Ensure m_connected_items for the current sheet exists
        // Can be not the case when "this" is living in clipboard
        const auto found = m_connected_items.find( schematic->CurrentSheet() );
 
        if( found == m_connected_items.end() )
            return false;
 
        connectedItems = &found->second;
    }
 
    const std::vector<SCH_ITEM*>& item_set = *connectedItems;
 
    for( KICAD_T scanType : aScanTypes )
    {
        if( scanType == SCH_LABEL_LOCATE_WIRE_T )
        {
            for( SCH_ITEM* connection : item_set )
            {
                if( connection->IsType( wireAndPinTypes ) )
                    return true;
            }
        }
 
        if( scanType == SCH_LABEL_LOCATE_BUS_T )
        {
            for( SCH_ITEM* connection : item_set )
            {
                if( connection->IsType( busTypes ) )
                    return true;
            }
        }
    }
 
    return false;
}
 
 
void SCH_LABEL_BASE::swapData( SCH_ITEM* aItem )
{
    SCH_TEXT::swapData( aItem );
 
    SCH_LABEL_BASE* label = static_cast<SCH_LABEL_BASE*>( aItem );
 
    m_fields.swap( label->m_fields );
 
    for( SCH_FIELD& field : m_fields )
        field.SetParent( this );
 
    for( SCH_FIELD& field : label->m_fields )
        field.SetParent( label );
 
    std::swap( m_shape, label->m_shape );
    std::swap( m_connectionType, label->m_connectionType );
    std::swap( m_isDangling, label->m_isDangling );
    std::swap( m_autoRotateOnPlacement, label->m_autoRotateOnPlacement );
    std::swap( m_lastResolvedColor, label->m_lastResolvedColor );
}
 
 
COLOR4D SCH_LABEL_BASE::GetLabelColor() const
{
    if( GetTextColor() != COLOR4D::UNSPECIFIED )
        m_lastResolvedColor = GetTextColor();
    else if( !IsConnectivityDirty() )
        m_lastResolvedColor = GetEffectiveNetClass()->GetSchematicColor();
 
    return m_lastResolvedColor;
}
 
 
void SCH_LABEL_BASE::SetLabelShape( LABEL_SHAPE aShape )
{
    m_shape = (LABEL_FLAG_SHAPE) aShape;
 
    static bool s_inUpdate = false;
 
    if( s_inUpdate )
        return;
 
    s_inUpdate = true;
 
    if( Type() == SCH_HIER_LABEL_T )
    {
        SCH_HIERLABEL* label = static_cast<SCH_HIERLABEL*>( this );
        SCH_SCREEN*    screen = dynamic_cast<SCH_SCREEN*>( label->GetParent() );
 
        if( screen )
        {
            const wxString& text = label->GetText();
 
            for( SCH_ITEM* item : screen->Items().OfType( SCH_HIER_LABEL_T ) )
            {
                SCH_HIERLABEL* other = static_cast<SCH_HIERLABEL*>( item );
 
                if( other != label && other->GetText() == text )
                    other->SetLabelShape( aShape );
            }
 
            for( const SCH_SHEET_PATH& sheetPath : screen->GetClientSheetPaths() )
            {
                SCH_SHEET* sheet = sheetPath.Last();
 
                if( sheet )
                {
                    for( SCH_SHEET_PIN* pin : sheet->GetPins() )
                    {
                        if( pin->GetText() == text )
                            pin->SetLabelShape( aShape );
                    }
                }
            }
        }
    }
    else if( Type() == SCH_SHEET_PIN_T )
    {
        SCH_SHEET_PIN* pin = static_cast<SCH_SHEET_PIN*>( this );
        SCH_SHEET*     parent = pin->GetParent();
 
        if( parent )
        {
            const wxString& text = pin->GetText();
            SCH_SCREEN*     screen = parent->GetScreen();
 
            if( screen )
            {
                for( SCH_ITEM* item : screen->Items().OfType( SCH_HIER_LABEL_T ) )
                {
                    SCH_HIERLABEL* hlabel = static_cast<SCH_HIERLABEL*>( item );
 
                    if( hlabel->GetText() == text )
                        hlabel->SetLabelShape( aShape );
                }
            }
 
            for( SCH_SHEET_PIN* other : parent->GetPins() )
            {
                if( other != pin && other->GetText() == text )
                    other->SetLabelShape( aShape );
            }
        }
    }
 
    s_inUpdate = false;
}
 
 
void SCH_LABEL_BASE::SetSpinStyle( SPIN_STYLE aSpinStyle )
{
    // Assume "Right" and Left" mean which side of the anchor the text will be on
    // Thus we want to left justify text up against the anchor if we are on the right
    switch( aSpinStyle )
    {
    default: wxFAIL_MSG( "Bad spin style" ); KI_FALLTHROUGH;
 
    case SPIN_STYLE::RIGHT: // Horiz Normal Orientation
        SetTextAngle( ANGLE_HORIZONTAL );
        SetHorizJustify( GR_TEXT_H_ALIGN_LEFT );
        break;
 
    case SPIN_STYLE::UP: // Vert Orientation UP
        SetTextAngle( ANGLE_VERTICAL );
        SetHorizJustify( GR_TEXT_H_ALIGN_LEFT );
        break;
 
    case SPIN_STYLE::LEFT: // Horiz Orientation - Right justified
        SetTextAngle( ANGLE_HORIZONTAL );
        SetHorizJustify( GR_TEXT_H_ALIGN_RIGHT );
        break;
 
    case SPIN_STYLE::BOTTOM: //  Vert Orientation BOTTOM
        SetTextAngle( ANGLE_VERTICAL );
        SetHorizJustify( GR_TEXT_H_ALIGN_RIGHT );
        break;
    }
 
    SetVertJustify( GR_TEXT_V_ALIGN_BOTTOM );
}
 
 
SPIN_STYLE SCH_LABEL_BASE::GetSpinStyle() const
{
    if( GetTextAngle() == ANGLE_VERTICAL )
    {
        if( GetHorizJustify() == GR_TEXT_H_ALIGN_RIGHT )
            return SPIN_STYLE::BOTTOM;
        else
            return SPIN_STYLE::UP;
    }
    else
    {
        if( GetHorizJustify() == GR_TEXT_H_ALIGN_RIGHT )
            return SPIN_STYLE::LEFT;
        else
            return SPIN_STYLE::RIGHT;
    }
}
 
 
VECTOR2I SCH_LABEL_BASE::GetSchematicTextOffset( const RENDER_SETTINGS* aSettings ) const
{
    VECTOR2I text_offset;
 
    // add an offset to x (or y) position to aid readability of text on a wire or line
    int dist = GetTextOffset( aSettings ) + GetPenWidth();
 
    switch( GetSpinStyle() )
    {
    case SPIN_STYLE::UP:
    case SPIN_STYLE::BOTTOM: text_offset.x = -dist; break; // Vert Orientation
    default:
    case SPIN_STYLE::LEFT:
    case SPIN_STYLE::RIGHT: text_offset.y = -dist; break; // Horiz Orientation
    }
 
    return text_offset;
}
 
 
void SCH_LABEL_BASE::SetPosition( const VECTOR2I& aPosition )
{
    VECTOR2I offset = aPosition - GetTextPos();
    Move( offset );
}
 
 
void SCH_LABEL_BASE::Move( const VECTOR2I& aMoveVector )
{
    if( aMoveVector == VECTOR2I() )
        return;
 
    SCH_TEXT::Move( aMoveVector );
 
    invalidateConnectivity();
 
    for( SCH_FIELD& field : m_fields )
        field.Offset( aMoveVector );
}
 
 
void SCH_LABEL_BASE::Rotate( const VECTOR2I& aCenter, bool aRotateCCW )
{
    VECTOR2I pt = GetTextPos();
    RotatePoint( pt, aCenter, aRotateCCW ? ANGLE_90 : ANGLE_270 );
    VECTOR2I offset = pt - GetTextPos();
 
    Rotate90( !aRotateCCW );
 
    SetTextPos( GetTextPos() + offset );
 
    for( SCH_FIELD& field : m_fields )
        field.SetTextPos( field.GetTextPos() + offset );
}
 
 
void SCH_LABEL_BASE::Rotate90( bool aClockwise )
{
    SCH_TEXT::Rotate90( aClockwise );
 
    if( m_fieldsAutoplaced == AUTOPLACE_AUTO || m_fieldsAutoplaced == AUTOPLACE_MANUAL )
    {
        AutoplaceFields( nullptr, m_fieldsAutoplaced );
    }
    else
    {
        for( SCH_FIELD& field : m_fields )
            field.Rotate( GetPosition(), !aClockwise );
    }
}
 
 
void SCH_LABEL_BASE::MirrorSpinStyle( bool aLeftRight )
{
    SCH_TEXT::MirrorSpinStyle( aLeftRight );
 
    for( SCH_FIELD& field : m_fields )
    {
        if( ( aLeftRight && field.GetTextAngle().IsHorizontal() )
            || ( !aLeftRight && field.GetTextAngle().IsVertical() ) )
        {
            if( field.GetHorizJustify() == GR_TEXT_H_ALIGN_LEFT )
                field.SetHorizJustify( GR_TEXT_H_ALIGN_RIGHT );
            else
                field.SetHorizJustify( GR_TEXT_H_ALIGN_LEFT );
        }
 
        VECTOR2I pos = field.GetTextPos();
        VECTOR2I delta = (VECTOR2I) GetPosition() - pos;
 
        if( aLeftRight )
            pos.x = GetPosition().x + delta.x;
        else
            pos.y = GetPosition().y + delta.y;
 
        field.SetTextPos( pos );
    }
}
 
 
void SCH_LABEL_BASE::MirrorHorizontally( int aCenter )
{
    VECTOR2I old_pos = GetPosition();
    SCH_TEXT::MirrorHorizontally( aCenter );
 
    for( SCH_FIELD& field : m_fields )
    {
        if( field.GetTextAngle() == ANGLE_HORIZONTAL )
            field.FlipHJustify();
 
        VECTOR2I pos = field.GetTextPos();
        VECTOR2I delta = old_pos - pos;
        pos.x = GetPosition().x + delta.x;
 
        field.SetPosition( pos );
    }
}
 
 
void SCH_LABEL_BASE::MirrorVertically( int aCenter )
{
    VECTOR2I old_pos = GetPosition();
    SCH_TEXT::MirrorVertically( aCenter );
 
    for( SCH_FIELD& field : m_fields )
    {
        if( field.GetTextAngle() == ANGLE_VERTICAL )
            field.FlipHJustify();
 
        VECTOR2I pos = field.GetTextPos();
        VECTOR2I delta = old_pos - pos;
        pos.y = GetPosition().y + delta.y;
 
        field.SetPosition( pos );
    }
}
 
 
bool SCH_LABEL_BASE::IncrementLabel( int aIncrement )
{
    wxString text = GetText();
 
    if( IncrementString( text, aIncrement ) )
    {
        SetText( text );
        return true;
    }
 
    return false;
}
 
 
bool SCH_LABEL_BASE::operator==( const SCH_ITEM& aOther ) const
{
    const SCH_LABEL_BASE* other = dynamic_cast<const SCH_LABEL_BASE*>( &aOther );
 
    if( !other )
        return false;
 
    if( m_shape != other->m_shape )
        return false;
 
    if( m_fields.size() != other->m_fields.size() )
        return false;
 
    if( m_autoRotateOnPlacement != other->m_autoRotateOnPlacement )
        return false;
 
    for( size_t ii = 0; ii < m_fields.size(); ++ii )
    {
        if( !( m_fields[ii] == other->m_fields[ii] ) )
            return false;
    }
 
    return SCH_TEXT::operator==( aOther );
}
 
 
double SCH_LABEL_BASE::Similarity( const SCH_ITEM& aOther ) const
{
    const SCH_LABEL_BASE* other = dynamic_cast<const SCH_LABEL_BASE*>( &aOther );
 
    if( !other )
        return 0.0;
 
    if( m_Uuid == other->m_Uuid )
        return 1.0;
 
    double similarity = SCH_TEXT::Similarity( aOther );
 
    if( typeid( *this ) != typeid( aOther ) )
        similarity *= 0.9;
 
    if( m_shape != other->m_shape )
        similarity *= 0.9;
 
    if( m_autoRotateOnPlacement != other->m_autoRotateOnPlacement )
        similarity *= 0.9;
 
    for( size_t ii = 0; ii < m_fields.size(); ++ii )
    {
        if( ii >= other->m_fields.size() )
            break;
 
        similarity *= m_fields[ii].Similarity( other->m_fields[ii] );
    }
 
    int diff = std::abs( int( m_fields.size() ) - int( other->m_fields.size() ) );
 
    similarity *= std::pow( 0.9, diff );
 
    return similarity;
}
 
 
void SCH_LABEL_BASE::AutoplaceFields( SCH_SCREEN* aScreen, AUTOPLACE_ALGO aAlgo )
{
    int margin = GetTextOffset() * 2;
    int labelLen = GetBodyBoundingBox( nullptr ).GetSizeMax();
    int accumulated = GetTextHeight() / 2;
 
    if( Type() == SCH_GLOBAL_LABEL_T )
        accumulated += margin + GetPenWidth() + margin;
 
    for( SCH_FIELD& field : m_fields )
    {
        VECTOR2I offset( 0, 0 );
 
        switch( GetSpinStyle() )
        {
        default:
        case SPIN_STYLE::LEFT:
            field.SetTextAngle( ANGLE_HORIZONTAL );
            field.SetHorizJustify( GR_TEXT_H_ALIGN_RIGHT );
 
            if( field.GetId() == FIELD_T::INTERSHEET_REFS )
                offset.x = -( labelLen + margin );
            else
                offset.y = accumulated + field.GetTextHeight() / 2;
 
            break;
 
        case SPIN_STYLE::UP:
            field.SetTextAngle( ANGLE_VERTICAL );
            field.SetHorizJustify( GR_TEXT_H_ALIGN_LEFT );
 
            if( field.GetId() == FIELD_T::INTERSHEET_REFS )
                offset.y = -( labelLen + margin );
            else
                offset.x = accumulated + field.GetTextHeight() / 2;
 
            break;
 
        case SPIN_STYLE::RIGHT:
            field.SetTextAngle( ANGLE_HORIZONTAL );
            field.SetHorizJustify( GR_TEXT_H_ALIGN_LEFT );
 
            if( field.GetId() == FIELD_T::INTERSHEET_REFS )
                offset.x = labelLen + margin;
            else
                offset.y = accumulated + field.GetTextHeight() / 2;
 
            break;
 
        case SPIN_STYLE::BOTTOM:
            field.SetTextAngle( ANGLE_VERTICAL );
            field.SetHorizJustify( GR_TEXT_H_ALIGN_RIGHT );
 
            if( field.GetId() == FIELD_T::INTERSHEET_REFS )
                offset.y = labelLen + margin;
            else
                offset.x = accumulated + field.GetTextHeight() / 2;
 
            break;
        }
 
        field.SetTextPos( GetTextPos() + offset );
 
        if( field.GetId() == FIELD_T::INTERSHEET_REFS )
            accumulated += field.GetTextHeight() + margin;
    }
 
    if( aAlgo == AUTOPLACE_AUTO || aAlgo == AUTOPLACE_MANUAL )
        m_fieldsAutoplaced = aAlgo;
}
 
 
void SCH_LABEL_BASE::GetIntersheetRefs( const SCH_SHEET_PATH* aPath, std::vector<std::pair<wxString, wxString>>* pages )
{
    wxCHECK( pages, /* void */ );
 
    if( Schematic() )
    {
        const SCH_SHEET_PATH& path = aPath ? *aPath : Schematic()->CurrentSheet();
        wxString resolvedLabel = GetShownText( &path, FOR_GUI );
        auto     it = Schematic()->GetPageRefsMap().find( resolvedLabel );
 
        if( it != Schematic()->GetPageRefsMap().end() )
        {
            std::vector<int> pageListCopy;
 
            pageListCopy.insert( pageListCopy.end(), it->second.begin(), it->second.end() );
 
            if( !Schematic()->Settings().m_IntersheetRefsListOwnPage )
            {
                int currentPage = path.GetVirtualPageNumber();
                std::erase( pageListCopy, currentPage );
 
                if( pageListCopy.empty() )
                    return;
            }
 
            std::sort( pageListCopy.begin(), pageListCopy.end() );
 
            std::map<int, wxString> sheetPages = Schematic()->GetVirtualPageToSheetPagesMap();
            std::map<int, wxString> sheetNames = Schematic()->GetVirtualPageToSheetNamesMap();
 
            for( int pageNum : pageListCopy )
                pages->push_back( { sheetPages[pageNum], sheetNames[pageNum] } );
        }
    }
}
 
 
void SCH_LABEL_BASE::GetContextualTextVars( wxArrayString* aVars ) const
{
    for( const SCH_FIELD& field : m_fields )
    {
        if( field.IsMandatory() )
            aVars->push_back( field.GetUntranslatedName().Upper() );
        else
            aVars->push_back( field.GetName() );
    }
 
    aVars->push_back( wxT( "OP" ) );
    aVars->push_back( wxT( "CONNECTION_TYPE" ) );
    aVars->push_back( wxT( "SHORT_NET_NAME" ) );
    aVars->push_back( wxT( "NET_NAME" ) );
    aVars->push_back( wxT( "NET_CLASS" ) );
}
 
 
bool SCH_LABEL_BASE::ResolveTextVar( const SCH_SHEET_PATH* aPath, wxString* token, int aDepth ) const
{
    // Per-thread regex.  CONNECTION_GRAPH::resolveAllDrivers calls this from worker
    // threads, and wxRegEx::Matches is not safe to call concurrently on one instance.
    thread_local wxRegEx operatingPoint( wxT( "^"
                                              "OP"
                                              "(.([0-9])?([a-zA-Z]*))?"
                                              "$" ) );
 
    wxCHECK( aPath, false );
 
    SCHEMATIC* schematic = Schematic();
 
    if( !schematic )
        return false;
 
    wxString variant = schematic->GetCurrentVariant();
 
    if( SCH_CONNECTIVITY::INPUT_TEXT_SCOPE::Active()
        && ( operatingPoint.Matches( *token ) || token->IsSameAs( wxS( "NET_NAME" ) )
             || token->IsSameAs( wxS( "SHORT_NET_NAME" ) ) || token->IsSameAs( wxS( "NET_CLASS" ) )
             || ( Type() == SCH_DIRECTIVE_LABEL_T
                  && ( token->IsSameAs( wxS( "EXCLUDE_FROM_BOM" ) )
                       || token->IsSameAs( wxS( "EXCLUDE_FROM_BOARD" ) )
                       || token->IsSameAs( wxS( "EXCLUDE_FROM_SIM" ) ) || token->IsSameAs( wxS( "DNP" ) ) ) ) ) )
    {
        token->clear();
        return true;
    }
 
    if( operatingPoint.Matches( *token ) )
    {
        int      precision = 3;
        wxString precisionStr( operatingPoint.GetMatch( *token, 2 ) );
        wxString range( operatingPoint.GetMatch( *token, 3 ) );
 
        if( !precisionStr.IsEmpty() )
            precision = precisionStr[0] - '0';
 
        if( range.IsEmpty() )
            range = wxS( "~V" );
 
        const auto name = GetConnectionName( aPath );
        *token = name ? schematic->GetOperatingPoint( *name, precision, range ) : wxString( "?" );
 
        return true;
    }
 
    if( token->Contains( ':' ) )
    {
        if( schematic->ResolveCrossReference( token, aDepth + 1 ) )
            return true;
    }
 
    if( ( Type() == SCH_GLOBAL_LABEL_T || Type() == SCH_HIER_LABEL_T || Type() == SCH_SHEET_PIN_T )
        && token->IsSameAs( wxT( "CONNECTION_TYPE" ) ) )
    {
        const SCH_LABEL_BASE* label = static_cast<const SCH_LABEL_BASE*>( this );
        *token = getElectricalTypeLabel( label->GetShape() );
        return true;
    }
    else if( token->IsSameAs( wxT( "SHORT_NET_NAME" ) ) )
    {
        *token = GetConnectionName( aPath, true ).value_or( wxString() );
 
        return true;
    }
    else if( token->IsSameAs( wxT( "NET_NAME" ) ) )
    {
        *token = GetConnectionName( aPath ).value_or( wxString() );
 
        return true;
    }
    else if( token->IsSameAs( wxT( "NET_CLASS" ) ) )
    {
        *token = GetConnectionName( aPath ) ? GetEffectiveNetClass( aPath )->GetName() : wxString();
 
        return true;
    }
    else if( Type() == SCH_DIRECTIVE_LABEL_T && token->IsSameAs( wxT( "EXCLUDE_FROM_BOM" ) ) )
    {
        const SCH_DIRECTIVE_LABEL* directive = static_cast<const SCH_DIRECTIVE_LABEL*>( this );
        *token = wxEmptyString;
 
        for( SCH_RULE_AREA* ruleArea : directive->GetConnectedRuleAreas() )
        {
            if( ruleArea->GetExcludedFromBOM( aPath, variant ) )
                *token = wxS( "Excluded from BOM" );
        }
 
        return true;
    }
    else if( Type() == SCH_DIRECTIVE_LABEL_T && token->IsSameAs( wxT( "EXCLUDE_FROM_BOARD" ) ) )
    {
        const SCH_DIRECTIVE_LABEL* directive = static_cast<const SCH_DIRECTIVE_LABEL*>( this );
        *token = wxEmptyString;
 
        for( SCH_RULE_AREA* ruleArea : directive->GetConnectedRuleAreas() )
        {
            if( ruleArea->GetExcludedFromBoard( aPath, variant ) )
                *token = wxS( "Excluded from board" );
        }
 
        return true;
    }
    else if( Type() == SCH_DIRECTIVE_LABEL_T && token->IsSameAs( wxT( "EXCLUDE_FROM_SIM" ) ) )
    {
        const SCH_DIRECTIVE_LABEL* directive = static_cast<const SCH_DIRECTIVE_LABEL*>( this );
        *token = wxEmptyString;
 
        for( SCH_RULE_AREA* ruleArea : directive->GetConnectedRuleAreas() )
        {
            if( ruleArea->GetExcludedFromSim( aPath, variant ) )
                *token = wxS( "Excluded from simulation" );
        }
 
        return true;
    }
    else if( Type() == SCH_DIRECTIVE_LABEL_T && token->IsSameAs( wxT( "DNP" ) ) )
    {
        const SCH_DIRECTIVE_LABEL* directive = static_cast<const SCH_DIRECTIVE_LABEL*>( this );
        *token = wxEmptyString;
 
        for( SCH_RULE_AREA* ruleArea : directive->GetConnectedRuleAreas() )
        {
            if( ruleArea->GetDNP( aPath, variant ) )
                *token = wxS( "DNP" );
        }
 
        return true;
    }
 
    for( const SCH_FIELD& field : m_fields )
    {
        if( token->IsSameAs( field.GetName() ) )
        {
            *token = field.GetShownText( aPath, INTERNAL, variant, aDepth + 1 );
            return true;
        }
    }
 
    // See if parent can resolve it (these will recurse to ancestors)
 
    if( Type() == SCH_SHEET_PIN_T && m_parent )
    {
        SCH_SHEET* sheet = static_cast<SCH_SHEET*>( m_parent );
 
        // aPath is expected to be either the sheet pin's owner-screen path (parent sheet as
        // Last()) or the already-extended path whose Last() is the owning sheet itself.
        // Only push the owner sheet when it isn't already at the end; a double-push produces
        // a nonsense path and breaks lookups keyed on the instance (e.g. ${#} page number).
        SCH_SHEET_PATH path = *aPath;
 
        if( path.Last() != sheet )
            path.push_back( sheet );
 
        if( sheet->ResolveTextVar( &path, token, aDepth + 1 ) )
            return true;
    }
    else
    {
        // aPath->Last() can be null when loading schematic, i.e. when all sheets are not yet loaded
        if( aPath->Last() && aPath->Last()->ResolveTextVar( aPath, token, aDepth + 1 ) )
            return true;
    }
 
    return false;
}
 
 
bool SCH_LABEL_BASE::HasCachedDriverName() const
{
    return !HasTextVars();
}
 
 
const wxString& SCH_LABEL_BASE::GetCachedDriverName() const
{
    return m_cached_driver_name;
}
 
 
void SCH_LABEL_BASE::cacheShownText()
{
    // Detached labels cannot invalidate a screen, so loading and copies skip the comparison
    const bool attached = GetParentScreen() != nullptr;
    const wxString previousText = attached ? EDA_TEXT::GetShownText( FOR_NETNAME ) : wxString();
    const std::vector<TEXT_VAR_REF_KEY> previousReferences = attached ? GetTextVarReferences()
                                                                      : std::vector<TEXT_VAR_REF_KEY>();
    EDA_TEXT::cacheShownText();
 
    if( !HasTextVars() )
        m_cached_driver_name = EscapeString( EDA_TEXT::GetShownText( FOR_NETNAME ), CTX_NETNAME );
 
    if( attached
        && ( previousText != EDA_TEXT::GetShownText( FOR_NETNAME ) || previousReferences != GetTextVarReferences() ) )
    {
        invalidateConnectivity();
    }
}
 
 
wxString SCH_LABEL_BASE::GetShownText( const SCH_SHEET_PATH* aPath, RESOLUTION_CONTEXT aContext, int aDepth ) const
{
    // ResolveTextVars counts expansion passes over this one string; aDepth counts re-entries
    // and has to keep climbing, or a label that resolves through itself never stops
    int depth = 0;
 
    std::function<bool( wxString* )> textResolver =
            [&]( wxString* token ) -> bool
            {
                return ResolveTextVar( aPath, token, aDepth + 1 );
            };
 
    wxString text = EDA_TEXT::GetShownText( aContext, depth );
 
    if( HasTextVars() && aContext != RAW_VALUE )
    {
        text = ResolveTextVars( text, &textResolver, depth );
        FinalizeTextVarExpansion( text, aContext );
    }
 
    return text;
}
 
 
void SCH_LABEL_BASE::RunOnChildren( const std::function<void( SCH_ITEM* )>& aFunction, RECURSE_MODE aMode )
{
    for( SCH_FIELD& field : m_fields )
        aFunction( &field );
}
 
 
bool SCH_LABEL_BASE::Matches( const EDA_SEARCH_DATA& aSearchData, void* aAuxData ) const
{
    if( SCH_ITEM::Matches( UnescapeString( GetText() ), aSearchData ) )
    {
        return true;
    }
 
    const SCH_SEARCH_DATA* searchData = dynamic_cast<const SCH_SEARCH_DATA*>( &aSearchData );
    SCH_SHEET_PATH*        sheetPath = reinterpret_cast<SCH_SHEET_PATH*>( aAuxData );
 
    return searchData && searchData->searchNetNames && sheetPath
           && MatchesNetName( aSearchData, sheetPath );
}
 
 
bool SCH_LABEL_BASE::Replace( const EDA_SEARCH_DATA& aSearchData, void* aAuxData )
{
    EDA_SEARCH_DATA localSearchData( aSearchData );
    localSearchData.findString = EscapeString( aSearchData.findString, CTX_NETNAME );
    localSearchData.replaceString = EscapeString( aSearchData.replaceString, CTX_NETNAME );
 
    return EDA_TEXT::Replace( localSearchData );
}
 
 
INSPECT_RESULT SCH_LABEL_BASE::Visit( INSPECTOR aInspector, void* testData, const std::vector<KICAD_T>& aScanTypes )
{
    if( IsType( aScanTypes ) )
    {
        if( INSPECT_RESULT::QUIT == aInspector( this, nullptr ) )
            return INSPECT_RESULT::QUIT;
    }
 
    for( KICAD_T scanType : aScanTypes )
    {
        if( scanType == SCH_LOCATE_ANY_T || scanType == SCH_FIELD_T )
        {
            for( SCH_FIELD& field : m_fields )
            {
                if( INSPECT_RESULT::QUIT == aInspector( &field, this ) )
                    return INSPECT_RESULT::QUIT;
            }
        }
    }
 
    return INSPECT_RESULT::CONTINUE;
}
 
 
void SCH_LABEL_BASE::GetEndPoints( std::vector<DANGLING_END_ITEM>& aItemList )
{
    DANGLING_END_ITEM item( LABEL_END, this, GetTextPos() );
    aItemList.push_back( item );
}
 
 
std::vector<VECTOR2I> SCH_LABEL_BASE::GetConnectionPoints() const
{
    return { GetTextPos() };
}
 
 
std::vector<int> SCH_LABEL_BASE::ViewGetLayers() const
{
    return { LAYER_DANGLING, LAYER_DEVICE, LAYER_NETCLASS_REFS, LAYER_FIELDS, LAYER_SELECTION_SHADOWS };
}
 
 
int SCH_LABEL_BASE::GetLabelBoxExpansion( const RENDER_SETTINGS* aSettings ) const
{
    double ratio;
 
    if( aSettings )
        ratio = static_cast<const SCH_RENDER_SETTINGS*>( aSettings )->m_LabelSizeRatio;
    else if( Schematic() )
        ratio = Schematic()->Settings().m_LabelSizeRatio;
    else
        ratio = DEFAULT_LABEL_SIZE_RATIO; // For previews (such as in Preferences), etc.
 
    return KiROUND( ratio * GetTextSize().y );
}
 
 
const BOX2I SCH_LABEL_BASE::GetBodyBoundingBox( const RENDER_SETTINGS* aSettings ) const
{
    // build the bounding box of the label only, without taking into account its fields
 
    BOX2I                 box;
    std::vector<VECTOR2I> pts;
 
    CreateGraphicShape( aSettings, pts, GetTextPos() );
 
    for( const VECTOR2I& pt : pts )
        box.Merge( pt );
 
    box.Inflate( GetEffectiveTextPenWidth() / 2 );
    box.Normalize();
    return box;
}
 
 
const BOX2I SCH_LABEL_BASE::GetBoundingBox() const
{
    // build the bounding box of the entire label, including its fields
 
    BOX2I box = GetBodyBoundingBox( nullptr );
 
    for( const SCH_FIELD& field : m_fields )
    {
        if( field.IsVisible() && field.GetText() != wxEmptyString )
        {
            BOX2I fieldBBox = field.GetBoundingBox();
 
            if( Type() == SCH_LABEL_T || Type() == SCH_GLOBAL_LABEL_T )
                fieldBBox.Offset( GetSchematicTextOffset( nullptr ) );
 
            box.Merge( fieldBBox );
        }
    }
 
    box.Normalize();
 
    return box;
}
 
 
bool SCH_LABEL_BASE::HitTest( const VECTOR2I& aPosition, int aAccuracy ) const
{
    BOX2I bbox = GetBodyBoundingBox( nullptr );
    bbox.Inflate( aAccuracy );
 
    if( bbox.Contains( aPosition ) )
        return true;
 
    for( const SCH_FIELD& field : m_fields )
    {
        if( field.IsVisible() )
        {
            BOX2I fieldBBox = field.GetBoundingBox();
            fieldBBox.Inflate( aAccuracy );
 
            if( Type() == SCH_LABEL_T || Type() == SCH_GLOBAL_LABEL_T )
                fieldBBox.Offset( GetSchematicTextOffset( nullptr ) );
 
            if( fieldBBox.Contains( aPosition ) )
                return true;
        }
    }
 
    return false;
}
 
 
bool SCH_LABEL_BASE::HitTest( const BOX2I& aRect, bool aContained, int aAccuracy ) const
{
    BOX2I rect = aRect;
 
    rect.Inflate( aAccuracy );
 
    if( aContained )
    {
        return rect.Contains( GetBoundingBox() );
    }
    else
    {
        if( rect.Intersects( GetBodyBoundingBox( nullptr ) ) )
            return true;
 
        for( const SCH_FIELD& field : m_fields )
        {
            if( field.IsVisible() )
            {
                BOX2I fieldBBox = field.GetBoundingBox();
 
                if( Type() == SCH_LABEL_T || Type() == SCH_GLOBAL_LABEL_T )
                    fieldBBox.Offset( GetSchematicTextOffset( nullptr ) );
 
                if( rect.Intersects( fieldBBox ) )
                    return true;
            }
        }
 
        return false;
    }
}
 
 
bool SCH_LABEL_BASE::HitTest( const SHAPE_LINE_CHAIN& aPoly, bool aContained ) const
{
    if( aContained )
    {
        return KIGEOM::BoxHitTest( aPoly, GetBoundingBox(), aContained );
    }
    else
    {
        if( KIGEOM::BoxHitTest( aPoly, GetBodyBoundingBox( nullptr ), aContained ) )
            return true;
 
        for( const SCH_FIELD& field : m_fields )
        {
            if( field.IsVisible() )
            {
                BOX2I fieldBBox = field.GetBoundingBox();
 
                if( Type() == SCH_LABEL_T || Type() == SCH_GLOBAL_LABEL_T )
                    fieldBBox.Offset( GetSchematicTextOffset( nullptr ) );
 
                if( KIGEOM::BoxHitTest( aPoly, fieldBBox, aContained ) )
                    return true;
            }
        }
 
        return false;
    }
}
 
 
bool SCH_LABEL_BASE::UpdateDanglingState( std::vector<DANGLING_END_ITEM>& aItemListByType,
                                          std::vector<DANGLING_END_ITEM>& aItemListByPos, const SCH_SHEET_PATH* aPath )
{
    bool     previousState = m_isDangling;
    VECTOR2I text_pos = GetTextPos();
    bool     pinOrNoConnect = false;
    m_isDangling = true;
    m_connectionType = CONNECTION_TYPE::NONE;
 
    for( auto it = DANGLING_END_ITEM_HELPER::get_lower_pos( aItemListByPos, text_pos );
         it < aItemListByPos.end() && it->GetPosition() == text_pos; it++ )
    {
        DANGLING_END_ITEM& item = *it;
 
        if( item.GetItem() == this )
            continue;
 
        switch( item.GetType() )
        {
        case PIN_END:
        case NO_CONNECT_END:
            pinOrNoConnect = true;
            KI_FALLTHROUGH;
 
        case LABEL_END:
        case SHEET_LABEL_END:
            m_isDangling = false;
 
            if( aPath && item.GetType() != PIN_END )
                AddConnectionTo( *aPath, static_cast<SCH_ITEM*>( item.GetItem() ) );
 
            break;
 
        default: break;
        }
 
        if( pinOrNoConnect )
            break;
    }
 
    // A coincident label leaves us unattached to a wire merely passing through, so keep scanning
    // A pin or no-connect sits on a wire end the connection graph already ties us to
    if( !pinOrNoConnect )
    {
        for( auto it = DANGLING_END_ITEM_HELPER::get_lower_type( aItemListByType, BUS_END );
             it < aItemListByType.end() && it->GetType() == BUS_END; it++ )
        {
            DANGLING_END_ITEM& item = *it;
            DANGLING_END_ITEM& nextItem = *( ++it );
 
            int accuracy = 1; // We have rounding issues with an accuracy of 0
 
            if( !TestSegmentHit( text_pos, item.GetPosition(), nextItem.GetPosition(), accuracy ) )
                continue;
 
            m_isDangling = false;
            m_connectionType = CONNECTION_TYPE::BUS;
 
            // Add the line to the connected items, since it won't be picked
            // up by a search of intersecting connection points
            if( aPath )
            {
                auto sch_item = static_cast<SCH_ITEM*>( item.GetItem() );
                AddConnectionTo( *aPath, sch_item );
                sch_item->AddConnectionTo( *aPath, this );
            }
 
            break;
        }
 
        if( m_connectionType != CONNECTION_TYPE::BUS )
        {
            for( auto it = DANGLING_END_ITEM_HELPER::get_lower_type( aItemListByType, WIRE_END );
                 it < aItemListByType.end() && it->GetType() == WIRE_END; it++ )
            {
                DANGLING_END_ITEM& item = *it;
                DANGLING_END_ITEM& nextItem = *( ++it );
 
                int accuracy = 1; // We have rounding issues with an accuracy of 0
 
                if( !TestSegmentHit( text_pos, item.GetPosition(), nextItem.GetPosition(), accuracy ) )
                    continue;
 
                m_isDangling = false;
                m_connectionType = CONNECTION_TYPE::NET;
 
                // Add the line to the connected items, since it won't be picked
                // up by a search of intersecting connection points
                if( aPath )
                {
                    auto sch_item = static_cast<SCH_ITEM*>( item.GetItem() );
                    AddConnectionTo( *aPath, sch_item );
                    sch_item->AddConnectionTo( *aPath, this );
                }
 
                break;
            }
        }
    }
 
    if( m_isDangling )
        m_connectionType = CONNECTION_TYPE::NONE;
 
    return previousState != m_isDangling;
}
 
 
bool SCH_LABEL_BASE::HasConnectivityChanges( const SCH_ITEM* aItem, const SCH_SHEET_PATH* aInstance ) const
{
    // Do not compare to ourself.
    if( aItem == this || !IsConnectable() )
        return false;
 
    const SCH_LABEL_BASE* label = dynamic_cast<const SCH_LABEL_BASE*>( aItem );
 
    // Don't compare against a different SCH_ITEM.
    wxCHECK( label, false );
 
    if( GetPosition() != label->GetPosition() )
        return true;
 
    if( GetShownText( aInstance, FOR_NETNAME ) != label->GetShownText( aInstance, FOR_NETNAME ) )
        return true;
 
    std::vector<wxString> netclasses;
    std::vector<wxString> otherNetclasses;
 
    for( const SCH_FIELD& field : m_fields )
    {
        if( field.GetUntranslatedName() == wxT( "Netclass" ) )
            netclasses.push_back( field.GetText() );
    }
 
    for( const SCH_FIELD& field : label->m_fields )
    {
        if( field.GetUntranslatedName() == wxT( "Netclass" ) )
            otherNetclasses.push_back( field.GetText() );
    }
 
    return netclasses != otherNetclasses;
}
 
 
void SCH_LABEL_BASE::GetMsgPanelInfo( EDA_DRAW_FRAME* aFrame, std::vector<MSG_PANEL_ITEM>& aList )
{
    wxString msg;
 
    switch( Type() )
    {
    case SCH_LABEL_T: msg = _( "Label" ); break;
    case SCH_DIRECTIVE_LABEL_T: msg = _( "Directive Label" ); break;
    case SCH_GLOBAL_LABEL_T: msg = _( "Global Label" ); break;
    case SCH_HIER_LABEL_T: msg = _( "Hierarchical Label" ); break;
    case SCH_SHEET_PIN_T: msg = _( "Hierarchical Sheet Pin" ); break;
    default: return;
    }
 
    // Don't use GetShownText() here; we want to show the user the variable references
    aList.emplace_back( msg, UnescapeString( GetText() ) );
 
    // Display electrical type if it is relevant
    if( Type() == SCH_GLOBAL_LABEL_T || Type() == SCH_HIER_LABEL_T || Type() == SCH_SHEET_PIN_T )
        aList.emplace_back( _( "Type" ), getElectricalTypeLabel( GetShape() ) );
 
    aList.emplace_back( _( "Font" ), GetFont() ? GetFont()->GetName() : _( "Default" ) );
 
    wxString textStyle[] = { _( "Normal" ), _( "Italic" ), _( "Bold" ), _( "Bold Italic" ) };
    int      style = IsBold() && IsItalic() ? 3 : IsBold() ? 2 : IsItalic() ? 1 : 0;
    aList.emplace_back( _( "Style" ), textStyle[style] );
 
    aList.emplace_back( _( "Text Size" ), aFrame->MessageTextFromValue( GetTextWidth() ) );
 
    switch( GetSpinStyle() )
    {
    case SPIN_STYLE::LEFT: msg = _( "Align right" ); break;
    case SPIN_STYLE::UP: msg = _( "Align bottom" ); break;
    case SPIN_STYLE::RIGHT: msg = _( "Align left" ); break;
    case SPIN_STYLE::BOTTOM: msg = _( "Align top" ); break;
    default: msg = wxT( "???" ); break;
    }
 
    aList.emplace_back( _( "Justification" ), msg );
 
    if( !IsConnectivityDirty() && dynamic_cast<SCH_EDIT_FRAME*>( aFrame ) )
        SCH_CONNECTIVITY::AppendConnectionInfo( *this, aList );
}
 
 
void SCH_LABEL_BASE::Plot( PLOTTER* aPlotter, bool aBackground, const SCH_PLOT_OPTS& aPlotOpts, int aUnit,
                           int aBodyStyle, const VECTOR2I& aOffset, bool aDimmed )
{
    static std::vector<VECTOR2I> s_poly;
 
    SCH_SHEET_PATH*  sheet = &Schematic()->CurrentSheet();
    RENDER_SETTINGS* settings = aPlotter->RenderSettings();
    int              layer = HasBusConnection( sheet ) ? LAYER_BUS : m_layer;
    COLOR4D          color = settings->GetLayerColor( layer );
    int              penWidth = GetEffectiveTextPenWidth( settings->GetDefaultPenWidth() );
    COLOR4D          bg = settings->GetBackgroundColor();
 
    if( bg == COLOR4D::UNSPECIFIED || !aPlotter->GetColorMode() )
        bg = COLOR4D::WHITE;
 
    if( aPlotter->GetColorMode() && GetLabelColor() != COLOR4D::UNSPECIFIED )
        color = GetLabelColor();
 
    if( color.m_text && Schematic() )
        color = COLOR4D( ResolveText( *color.m_text, &Schematic()->CurrentSheet() ) );
 
    if( aDimmed )
    {
        color.Desaturate();
        color = color.Mix( bg, 0.5f );
    }
 
    penWidth = std::max( penWidth, settings->GetMinPenWidth() );
    aPlotter->SetCurrentLineWidth( penWidth );
 
    KIFONT::FONT* font = GetDrawFont( settings );
 
    VECTOR2I textpos = GetTextPos() + GetSchematicTextOffset( settings );
    CreateGraphicShape( settings, s_poly, GetTextPos() );
 
    TEXT_ATTRIBUTES attrs = GetAttributes();
    attrs.m_StrokeWidth = penWidth;
    attrs.m_Multiline = false;
 
    if( aBackground )
    {
        // No filled shapes (yet)
    }
    else
    {
        aPlotter->PlotText( textpos, color, GetShownText( sheet, FOR_CANVAS ), attrs, font, GetFontMetrics() );
 
        if( aPlotter->GetColorMode() )
        {
            // For the graphic shape use the override color or the layer color, but not the
            // net/netclass color.
            COLOR4D shapeColor;
 
            if( GetTextColor() != COLOR4D::UNSPECIFIED )
                shapeColor = GetTextColor();
            else
                shapeColor = settings->GetLayerColor( m_layer );
 
            if( aDimmed )
            {
                shapeColor.Desaturate();
                shapeColor = shapeColor.Mix( bg, 0.5f );
            }
 
            aPlotter->SetColor( shapeColor );
        }
 
        if( GetShape() == LABEL_FLAG_SHAPE::F_DOT )
        {
            aPlotter->MoveTo( s_poly[0] );
            aPlotter->LineTo( s_poly[1] );
            aPlotter->PenFinish();
 
            int diameter = ( s_poly[2] - s_poly[1] ).EuclideanNorm() * 2;
            aPlotter->FilledCircle( s_poly[2], diameter, nullptr );
        }
        else if( GetShape() == LABEL_FLAG_SHAPE::F_ROUND )
        {
            aPlotter->MoveTo( s_poly[0] );
            aPlotter->LineTo( s_poly[1] );
            aPlotter->PenFinish();
 
            int diameter = ( s_poly[2] - s_poly[1] ).EuclideanNorm() * 2;
            aPlotter->ThickCircle( s_poly[2], diameter, penWidth, nullptr );
        }
        else
        {
            if( !s_poly.empty() )
                aPlotter->PlotPoly( s_poly, FILL_T::NO_FILL, penWidth, nullptr );
        }
 
        // Make sheet pins and hierarchical labels clickable hyperlinks
        bool  linkAlreadyPlotted = false;
        BOX2I bodyBBox = GetBodyBoundingBox( settings );
 
        if( aPlotOpts.m_PDFHierarchicalLinks )
        {
            if( Type() == SCH_HIER_LABEL_T )
            {
                if( sheet->size() >= 2 )
                {
                    SCH_SHEET_PATH path = *sheet;
                    path.pop_back();
                    aPlotter->HyperlinkBox( bodyBBox, EDA_TEXT::GotoPageHref( path.GetPageNumber() ) );
                    linkAlreadyPlotted = true;
                }
            }
            else if( Type() == SCH_SHEET_PIN_T )
            {
                SCH_SHEET_PATH path = *sheet;
                SCH_SHEET*     parent = static_cast<SCH_SHEET*>( m_parent );
                path.push_back( parent );
                aPlotter->HyperlinkBox( bodyBBox, EDA_TEXT::GotoPageHref( path.GetPageNumber() ) );
                linkAlreadyPlotted = true;
            }
        }
 
        // Plot attributes to a hypertext menu
        if( aPlotOpts.m_PDFPropertyPopups && !linkAlreadyPlotted )
        {
            std::vector<wxString> properties;
 
            if( const auto netName = GetConnectionName( sheet ) )
            {
                properties.emplace_back( wxString::Format( wxT( "!%s = %s" ), _( "Net" ), *netName ) );
 
                properties.emplace_back( wxString::Format( wxT( "!%s = %s" ), _( "Resolved netclass" ),
                                                           GetEffectiveNetClass( sheet )->GetHumanReadableName() ) );
            }
 
            for( const SCH_FIELD& field : GetFields() )
            {
                properties.emplace_back( wxString::Format( wxT( "!%s = %s" ),
                                                           field.GetName(),
                                                           field.GetShownText( FOR_GUI ) ) );
            }
 
            if( !properties.empty() )
                aPlotter->HyperlinkMenu( bodyBBox, properties );
        }
 
        if( Type() == SCH_HIER_LABEL_T )
            aPlotter->Bookmark( bodyBBox, GetShownText( FOR_GUI ), _( "Hierarchical Labels" ) );
    }
 
    for( SCH_FIELD& field : m_fields )
        field.Plot( aPlotter, aBackground, aPlotOpts, aUnit, aBodyStyle, aOffset, aDimmed );
}
 
 
bool SCH_LABEL_BASE::AutoRotateOnPlacement() const
{
    return m_autoRotateOnPlacement;
}
 
 
void SCH_LABEL_BASE::SetAutoRotateOnPlacement( bool autoRotate )
{
    m_autoRotateOnPlacement = autoRotate;
}
 
 
SCH_LABEL::SCH_LABEL( const VECTOR2I& pos, const wxString& text ) :
        SCH_LABEL_BASE( pos, text, SCH_LABEL_T )
{
    m_layer = LAYER_LOCLABEL;
    m_shape = LABEL_FLAG_SHAPE::L_INPUT;
    m_isDangling = true;
}
 
 
template<typename LabelProto>
void packLabel( LabelProto& aOutput, const SCH_LABEL_BASE& aLabel )
{
    using namespace kiapi::schematic;
 
    aOutput.mutable_id()->set_value( aLabel.m_Uuid.AsStdString() );
    aOutput.set_spin_style( ToProtoEnum<SPIN_STYLE::SPIN, types::SchematicLabelSpinStyle>( aLabel.GetSpinStyle().Spin() ) );
    aOutput.set_locked( aLabel.IsLocked() ? kiapi::common::types::LockedState::LS_LOCKED
                                          : kiapi::common::types::LockedState::LS_UNLOCKED );
 
    aLabel.EDA_TEXT::Serialize( *aOutput.mutable_text(), schIUScale );
    kiapi::common::PackVector2( *aOutput.mutable_position(), aLabel.GetPosition(), schIUScale );
    aOutput.set_fields_autoplaced( aLabel.GetFieldsAutoplaced() != AUTOPLACE_NONE );
 
    for( const SCH_FIELD& field : aLabel.GetFields() )
    {
        if( field.IsMandatory() )
            continue;
 
        field.Serialize( *aOutput.add_fields(), schIUScale );
    }
}
 
 
template<typename LabelProto>
bool unpackLabel( const LabelProto& aInput, SCH_LABEL_BASE& aLabel )
{
    using namespace kiapi::schematic;
 
    static wxString intersheetRefsName = ::GetDefaultFieldName( FIELD_T::INTERSHEET_REFS, UNTRANSLATED );
 
    // Published rows and the item index hold this identity, so they must not outlive the change
    if( SCH_SCREEN* screen = aLabel.GetParentScreen() )
        screen->BumpConnectivityRevision();
 
    const_cast<KIID&>( aLabel.m_Uuid ) = KIID( aInput.id().value() );
    aLabel.SetLocked( aInput.locked() == kiapi::common::types::LockedState::LS_LOCKED );
 
    if( !aLabel.EDA_TEXT::Deserialize( aInput.text(), schIUScale ) )
        return false;
 
    aLabel.SetSpinStyle( FromProtoEnum<SPIN_STYLE::SPIN, types::SchematicLabelSpinStyle>( aInput.spin_style() ) );
    aLabel.SetPosition( kiapi::common::UnpackVector2( aInput.position(), schIUScale ) );
    aLabel.SetFieldsAutoplaced( aInput.fields_autoplaced() ? AUTOPLACE_AUTO : AUTOPLACE_NONE );
 
    {
        aLabel.GetFields().clear();
 
        if( aLabel.GetMandatoryFieldCount() > 0 )
        {
            switch( aLabel.Type() )
            {
            case SCH_GLOBAL_LABEL_T:
                aLabel.GetFields().emplace_back( SCH_FIELD( &aLabel, FIELD_T::INTERSHEET_REFS, intersheetRefsName ) );
                break;
 
            default:
                break;
            }
        }
    }
 
    for( const types::SchematicField& field : aInput.fields() )
    {
        // Don't duplicate mandatory fields.
        if( aLabel.GetMandatoryFieldCount() > 0 )
        {
            switch( aLabel.Type() )
            {
            case SCH_GLOBAL_LABEL_T:
                if( wxString::FromUTF8( field.name() ) == intersheetRefsName )
                    continue;
 
                break;
 
            default:
                break;
            }
        }
 
        aLabel.GetFields().emplace_back( &aLabel, FIELD_T::USER );
        aLabel.GetFields().back().Deserialize( field, schIUScale );
    }
 
    return true;
}
 
 
void SCH_LABEL::Serialize( google::protobuf::Any& aContainer ) const
{
    kiapi::schematic::types::LocalLabel label;
 
    packLabel( label, *this );
 
    kiapi::common::PackCustomProperties( label.mutable_custom_properties(), *this );
    aContainer.PackFrom( label );
}
 
 
bool SCH_LABEL::Deserialize( const google::protobuf::Any& aContainer )
{
    kiapi::schematic::types::LocalLabel label;
 
    if( !aContainer.UnpackTo( &label ) )
        return false;
 
    kiapi::common::UnpackCustomProperties( label.custom_properties(), *this );
 
    return unpackLabel( label, *this );
}
 
 
const BOX2I SCH_LABEL::GetBodyBoundingBox( const RENDER_SETTINGS* aSettings ) const
{
    BOX2I rect = GetTextBox( aSettings );
 
    rect.Offset( 0, -GetTextOffset() );
    rect.Inflate( GetEffectiveTextPenWidth() );
 
    if( !GetTextAngle().IsZero() )
    {
        // Rotate rect
        VECTOR2I pos = rect.GetOrigin();
        VECTOR2I end = rect.GetEnd();
 
        RotatePoint( pos, GetTextPos(), GetTextAngle() );
        RotatePoint( end, GetTextPos(), GetTextAngle() );
 
        rect.SetOrigin( pos );
        rect.SetEnd( end );
 
        rect.Normalize();
    }
 
    // Labels have a position point that is outside of the TextBox
    rect.Merge( GetPosition() );
 
    return rect;
}
 
 
wxString SCH_LABEL::GetItemDescription( UNITS_PROVIDER* aUnitsProvider, bool aFull ) const
{
    return wxString::Format( _( "Label '%s'" ), aFull ? GetShownText( FOR_GUI )
                                                      : KIUI::EllipsizeMenuText( GetText() ) );
}
 
 
BITMAPS SCH_LABEL::GetMenuImage() const
{
    return BITMAPS::add_line_label;
}
 
 
SCH_DIRECTIVE_LABEL::SCH_DIRECTIVE_LABEL( const VECTOR2I& pos ) :
        SCH_LABEL_BASE( pos, wxEmptyString, SCH_DIRECTIVE_LABEL_T )
{
    m_layer = LAYER_NETCLASS_REFS;
    m_shape = LABEL_FLAG_SHAPE::F_ROUND;
    m_pinLength = schIUScale.MilsToIU( 100 );
    m_symbolSize = schIUScale.MilsToIU( 20 );
    m_isDangling = true;
}
 
 
void SCH_DIRECTIVE_LABEL::swapData( SCH_ITEM* aItem )
{
    SCH_LABEL_BASE::swapData( aItem );
 
    SCH_DIRECTIVE_LABEL* label = static_cast<SCH_DIRECTIVE_LABEL*>( aItem );
 
    std::swap( m_pinLength, label->m_pinLength );
    std::swap( m_symbolSize, label->m_symbolSize );
}
 
 
SCH_DIRECTIVE_LABEL::SCH_DIRECTIVE_LABEL( const SCH_DIRECTIVE_LABEL& aClassLabel ) :
        SCH_LABEL_BASE( aClassLabel )
{
    m_pinLength = aClassLabel.m_pinLength;
    m_symbolSize = aClassLabel.m_symbolSize;
}
 
 
SCH_DIRECTIVE_LABEL::~SCH_DIRECTIVE_LABEL()
{
    for( SCH_RULE_AREA* ruleArea : m_connected_rule_areas )
        ruleArea->RemoveDirective( this );
}
 
 
void SCH_DIRECTIVE_LABEL::Serialize( google::protobuf::Any& aContainer ) const
{
    kiapi::schematic::types::DirectiveLabel label;
 
    packLabel( label, *this );
    label.set_shape( ToProtoEnum<LABEL_FLAG_SHAPE, kiapi::schematic::types::SchematicLabelShape>( GetShape() ) );
    kiapi::common::PackDistance( *label.mutable_pin_length(), m_pinLength, schIUScale );
    kiapi::common::PackDistance( *label.mutable_symbol_size(), m_symbolSize, schIUScale );
 
    kiapi::common::PackCustomProperties( label.mutable_custom_properties(), *this );
    aContainer.PackFrom( label );
}
 
 
bool SCH_DIRECTIVE_LABEL::Deserialize( const google::protobuf::Any& aContainer )
{
    kiapi::schematic::types::DirectiveLabel label;
 
    if( !aContainer.UnpackTo( &label ) )
        return false;
 
    kiapi::common::UnpackCustomProperties( label.custom_properties(), *this );
 
    if( !unpackLabel( label, *this ) )
        return false;
 
    SetShape( FromProtoEnum<LABEL_FLAG_SHAPE, kiapi::schematic::types::SchematicLabelShape>( label.shape() ) );
 
    if( label.has_pin_length() )
        m_pinLength = kiapi::common::UnpackDistance( label.pin_length(), schIUScale );
 
    if( label.has_symbol_size() )
        m_symbolSize = kiapi::common::UnpackDistance( label.symbol_size(), schIUScale );
 
    return true;
}
 
 
bool SCH_DIRECTIVE_LABEL::operator==( const SCH_ITEM& aOther ) const
{
    if( !SCH_LABEL_BASE::operator==( aOther ) )
        return false;
 
    const SCH_DIRECTIVE_LABEL* other = dynamic_cast<const SCH_DIRECTIVE_LABEL*>( &aOther );
 
    if( !other )
        return false;
 
    return m_pinLength == other->m_pinLength && m_symbolSize == other->m_symbolSize;
}
 
 
int SCH_DIRECTIVE_LABEL::GetPenWidth() const
{
    int pen = 0;
 
    if( Schematic() )
        pen = Schematic()->Settings().m_DefaultLineWidth;
 
    return GetEffectiveTextPenWidth( pen );
}
 
 
void SCH_DIRECTIVE_LABEL::MirrorSpinStyle( bool aLeftRight )
{
    // The "text" is in fact a graphic shape. For a horizontal "text", it looks like a
    // vertical shape (like a text reduced to only "I" letter).
    // So the mirroring is not exactly similar to a SCH_TEXT item
    SCH_TEXT::MirrorSpinStyle( !aLeftRight );
 
    for( SCH_FIELD& field : m_fields )
    {
        if( ( aLeftRight && field.GetTextAngle().IsHorizontal() )
            || ( !aLeftRight && field.GetTextAngle().IsVertical() ) )
        {
            if( field.GetHorizJustify() == GR_TEXT_H_ALIGN_LEFT )
                field.SetHorizJustify( GR_TEXT_H_ALIGN_RIGHT );
            else
                field.SetHorizJustify( GR_TEXT_H_ALIGN_LEFT );
        }
 
        VECTOR2I pos = field.GetTextPos();
        VECTOR2I delta = (VECTOR2I) GetPosition() - pos;
 
        if( aLeftRight )
            pos.x = GetPosition().x + delta.x;
        else
            pos.y = GetPosition().y + delta.y;
 
        field.SetTextPos( pos );
    }
}
 
 
void SCH_DIRECTIVE_LABEL::MirrorHorizontally( int aCenter )
{
    VECTOR2I old_pos = GetPosition();
 
    // The "text" is in fact a graphic shape. For a horizontal "text", it looks like a
    // vertical shape (like a text reduced to only "I" letter).
    // So the mirroring is not exactly similar to a SCH_TEXT item
    // Text is NOT really mirrored; it is moved to a suitable horizontal position
    SetSpinStyle( GetSpinStyle().MirrorX() );
 
    SetTextX( MIRRORVAL( GetTextPos().x, aCenter ) );
 
    for( SCH_FIELD& field : m_fields )
    {
        if( field.GetHorizJustify() == GR_TEXT_H_ALIGN_LEFT )
            field.SetHorizJustify( GR_TEXT_H_ALIGN_RIGHT );
        else if( field.GetHorizJustify() == GR_TEXT_H_ALIGN_RIGHT )
            field.SetHorizJustify( GR_TEXT_H_ALIGN_LEFT );
 
        VECTOR2I pos = field.GetTextPos();
        VECTOR2I delta = old_pos - pos;
        pos.x = GetPosition().x + delta.x;
 
        field.SetPosition( pos );
    }
}
 
 
void SCH_DIRECTIVE_LABEL::MirrorVertically( int aCenter )
{
    VECTOR2I old_pos = GetPosition();
    // The "text" is in fact a graphic shape. For a horizontal "text", it looks like a
    // vertical shape (like a text reduced to only "I" letter).
    // So the mirroring is not exactly similar to a SCH_TEXT item
    // Text is NOT really mirrored; it is moved to a suitable vertical position
    SetSpinStyle( GetSpinStyle().MirrorY() );
 
    SetTextY( MIRRORVAL( GetTextPos().y, aCenter ) );
 
    for( SCH_FIELD& field : m_fields )
    {
        VECTOR2I pos = field.GetTextPos();
        VECTOR2I delta = old_pos - pos;
        pos.y = GetPosition().y + delta.y;
 
        field.SetPosition( pos );
    }
}
 
 
void SCH_DIRECTIVE_LABEL::CreateGraphicShape( const RENDER_SETTINGS* aRenderSettings, std::vector<VECTOR2I>& aPoints,
                                              const VECTOR2I& aPos ) const
{
    int symbolSize = m_symbolSize;
 
    aPoints.clear();
 
    switch( m_shape )
    {
    case LABEL_FLAG_SHAPE::F_DOT: symbolSize = KiROUND( symbolSize * 0.7 ); KI_FALLTHROUGH;
 
    case LABEL_FLAG_SHAPE::F_ROUND:
        // First 3 points are used for generating shape
        aPoints.emplace_back( VECTOR2I( 0, 0 ) );
        aPoints.emplace_back( VECTOR2I( 0, m_pinLength - symbolSize ) );
        aPoints.emplace_back( VECTOR2I( 0, m_pinLength ) );
 
        // These points are just used to bulk out the bounding box
        aPoints.emplace_back( VECTOR2I( -m_symbolSize, m_pinLength ) );
        aPoints.emplace_back( VECTOR2I( 0, m_pinLength ) );
        aPoints.emplace_back( VECTOR2I( m_symbolSize, m_pinLength + symbolSize ) );
        break;
 
    case LABEL_FLAG_SHAPE::F_DIAMOND:
        aPoints.emplace_back( VECTOR2I( 0, 0 ) );
        aPoints.emplace_back( VECTOR2I( 0, m_pinLength - symbolSize ) );
        aPoints.emplace_back( VECTOR2I( -2 * m_symbolSize, m_pinLength ) );
        aPoints.emplace_back( VECTOR2I( 0, m_pinLength + symbolSize ) );
        aPoints.emplace_back( VECTOR2I( 2 * m_symbolSize, m_pinLength ) );
        aPoints.emplace_back( VECTOR2I( 0, m_pinLength - symbolSize ) );
        aPoints.emplace_back( VECTOR2I( 0, 0 ) );
        break;
 
    case LABEL_FLAG_SHAPE::F_RECTANGLE:
        symbolSize = KiROUND( symbolSize * 0.8 );
 
        aPoints.emplace_back( VECTOR2I( 0, 0 ) );
        aPoints.emplace_back( VECTOR2I( 0, m_pinLength - symbolSize ) );
        aPoints.emplace_back( VECTOR2I( -2 * symbolSize, m_pinLength - symbolSize ) );
        aPoints.emplace_back( VECTOR2I( -2 * symbolSize, m_pinLength + symbolSize ) );
        aPoints.emplace_back( VECTOR2I( 2 * symbolSize, m_pinLength + symbolSize ) );
        aPoints.emplace_back( VECTOR2I( 2 * symbolSize, m_pinLength - symbolSize ) );
        aPoints.emplace_back( VECTOR2I( 0, m_pinLength - symbolSize ) );
        aPoints.emplace_back( VECTOR2I( 0, 0 ) );
        break;
 
    default: break;
    }
 
    // Rotate outlines and move corners to real position
    for( VECTOR2I& aPoint : aPoints )
    {
        switch( GetSpinStyle() )
        {
        default:
        case SPIN_STYLE::LEFT: break;
        case SPIN_STYLE::UP: RotatePoint( aPoint, -ANGLE_90 ); break;
        case SPIN_STYLE::RIGHT: RotatePoint( aPoint, ANGLE_180 ); break;
        case SPIN_STYLE::BOTTOM: RotatePoint( aPoint, ANGLE_90 ); break;
        }
 
        aPoint += aPos;
    }
}
 
 
void SCH_DIRECTIVE_LABEL::AutoplaceFields( SCH_SCREEN* aScreen, AUTOPLACE_ALGO aAlgo )
{
    int margin = GetTextOffset();
    int symbolWidth = m_symbolSize;
    int origin = m_pinLength;
 
    if( m_shape == LABEL_FLAG_SHAPE::F_DIAMOND || m_shape == LABEL_FLAG_SHAPE::F_RECTANGLE )
        symbolWidth *= 2;
 
    if( IsItalic() )
        margin = KiROUND( margin * 1.5 );
 
    VECTOR2I offset;
 
    for( SCH_FIELD& field : m_fields )
    {
        if( field.GetText() == wxEmptyString )
            continue;
 
        switch( GetSpinStyle() )
        {
        default:
        case SPIN_STYLE::LEFT:
            field.SetTextAngle( ANGLE_HORIZONTAL );
            offset = { symbolWidth + margin, origin };
            break;
 
        case SPIN_STYLE::UP:
            field.SetTextAngle( ANGLE_VERTICAL );
            offset = { -origin, -( symbolWidth + margin ) };
            break;
 
        case SPIN_STYLE::RIGHT:
            field.SetTextAngle( ANGLE_HORIZONTAL );
            offset = { symbolWidth + margin, -origin };
            break;
 
        case SPIN_STYLE::BOTTOM:
            field.SetTextAngle( ANGLE_VERTICAL );
            offset = { origin, -( symbolWidth + margin ) };
            break;
        }
 
        field.SetHorizJustify( GR_TEXT_H_ALIGN_LEFT );
        field.SetTextPos( GetPosition() + offset );
 
        origin -= field.GetTextHeight() + margin;
    }
 
    if( aAlgo == AUTOPLACE_AUTO || aAlgo == AUTOPLACE_MANUAL )
        m_fieldsAutoplaced = aAlgo;
}
 
 
wxString SCH_DIRECTIVE_LABEL::GetItemDescription( UNITS_PROVIDER* aUnitsProvider, bool aFull ) const
{
    if( m_fields.empty() )
    {
        return _( "Directive Label" );
    }
    else
    {
        const SCH_FIELD& firstField = m_fields[0];
        wxString content = aFull ? firstField.GetShownText( FOR_GUI ) : KIUI::EllipsizeMenuText( firstField.GetText() );
 
        if( content.IsEmpty() )
            return wxString::Format( _( "Directive Label [%s (empty)]" ), UnescapeString( m_fields[0].GetName() ) );
        else
            return wxString::Format( _( "Directive Label [%s %s]" ), UnescapeString( m_fields[0].GetName() ), content );
    }
}
 
 
void SCH_DIRECTIVE_LABEL::AddConnectedRuleArea( SCH_RULE_AREA* aRuleArea )
{
    m_connected_rule_areas.insert( aRuleArea );
}
 
 
void SCH_DIRECTIVE_LABEL::ClearConnectedRuleAreas()
{
    m_connected_rule_areas.clear();
}
 
 
void SCH_DIRECTIVE_LABEL::RemoveConnectedRuleArea( SCH_RULE_AREA* aRuleArea )
{
    m_connected_rule_areas.erase( aRuleArea );
}
 
 
const std::unordered_set<SCH_RULE_AREA*> SCH_DIRECTIVE_LABEL::GetConnectedRuleAreas() const
{
    return m_connected_rule_areas;
}
 
 
bool SCH_DIRECTIVE_LABEL::IsDangling() const
{
    return m_isDangling && m_connected_rule_areas.empty();
}
 
bool SCH_DIRECTIVE_LABEL::IncrementLabel( int aIncrement )
{
    bool success = true;
 
    for( SCH_FIELD& field : m_fields )
    {
        if( field.GetUntranslatedName() == wxT( "Netclass" )
                || field.GetUntranslatedName() == wxT( "Component Class" ) )
        {
            wxString text = field.GetText();
 
            if( IncrementString( text, aIncrement ) )
                field.SetText( text );
            else
                success = false;
        }
    }
 
    return success;
}
 
 
SCH_GLOBALLABEL::SCH_GLOBALLABEL( const VECTOR2I& pos, const wxString& text ) :
        SCH_LABEL_BASE( pos, text, SCH_GLOBAL_LABEL_T )
{
    m_layer = LAYER_GLOBLABEL;
    m_shape = LABEL_FLAG_SHAPE::L_BIDI;
    m_isDangling = true;
 
    SetVertJustify( GR_TEXT_V_ALIGN_CENTER );
 
    m_fields.emplace_back( SCH_FIELD( this, FIELD_T::INTERSHEET_REFS,
                                      ::GetDefaultFieldName( FIELD_T::INTERSHEET_REFS, UNTRANSLATED ) ) );
    m_fields.back().SetText( wxT( "${INTERSHEET_REFS}" ) );
    m_fields.back().SetVisible( false );
    m_fields.back().SetVertJustify( GR_TEXT_V_ALIGN_CENTER );
    m_fields.back().SetTextPos( pos );
}
 
 
SCH_GLOBALLABEL::SCH_GLOBALLABEL( const SCH_GLOBALLABEL& aGlobalLabel ) :
        SCH_LABEL_BASE( aGlobalLabel )
{
}
 
 
void SCH_GLOBALLABEL::Serialize( google::protobuf::Any& aContainer ) const
{
    using namespace kiapi::schematic;
 
    types::GlobalLabel label;
 
    label.mutable_id()->set_value( m_Uuid.AsStdString() );
    label.set_spin_style( ToProtoEnum<SPIN_STYLE::SPIN, types::SchematicLabelSpinStyle>( GetSpinStyle().Spin() ) );
    label.set_locked( IsLocked() ? kiapi::common::types::LockedState::LS_LOCKED
                                 : kiapi::common::types::LockedState::LS_UNLOCKED );
 
    EDA_TEXT::Serialize( *label.mutable_text(), schIUScale );
    kiapi::common::PackVector2( *label.mutable_position(), GetPosition(), schIUScale );
    label.set_fields_autoplaced( GetFieldsAutoplaced() != AUTOPLACE_NONE );
 
    label.set_shape( ToProtoEnum<LABEL_FLAG_SHAPE, types::SchematicLabelShape>( GetShape() ) );
 
    for( const SCH_FIELD& field : GetFields() )
    {
        if( field.IsMandatory() )
            continue;
 
        field.Serialize( *label.add_fields(), schIUScale );
    }
 
    if( const SCH_FIELD* field = GetField( FIELD_T::INTERSHEET_REFS ) )
        field->Serialize( *label.mutable_intersheet_refs_field(), schIUScale );
 
    kiapi::common::PackCustomProperties( label.mutable_custom_properties(), *this );
    aContainer.PackFrom( label );
}
 
 
bool SCH_GLOBALLABEL::Deserialize( const google::protobuf::Any& aContainer )
{
    kiapi::schematic::types::GlobalLabel label;
 
    if( !aContainer.UnpackTo( &label ) )
        return false;
 
    kiapi::common::UnpackCustomProperties( label.custom_properties(), *this );
 
    if( !unpackLabel( label, *this ) )
        return false;
 
    SetShape( FromProtoEnum<LABEL_FLAG_SHAPE, kiapi::schematic::types::SchematicLabelShape>(
            label.shape() ) );
 
    if( label.has_intersheet_refs_field() )
        GetField( FIELD_T::INTERSHEET_REFS )->Deserialize( label.intersheet_refs_field(), schIUScale );
 
    return true;
}
 
 
SCH_FIELD* SCH_GLOBALLABEL::GetField( FIELD_T aFieldType )
{
    if( SCH_FIELD* field = FindField( m_fields, aFieldType ) )
        return field;
 
    m_fields.emplace_back( this, aFieldType );
    return &m_fields.back();
}
 
 
const SCH_FIELD* SCH_GLOBALLABEL::GetField( FIELD_T aFieldType ) const
{
    return FindField( m_fields, aFieldType );
}
 
 
VECTOR2I SCH_GLOBALLABEL::GetSchematicTextOffset( const RENDER_SETTINGS* aSettings ) const
{
    int horiz = GetLabelBoxExpansion( aSettings );
 
    // Center the text on the center line of "E" instead of "R" to make room for an overbar
    int vert = GetTextHeight() * 0.0715;
 
    switch( m_shape )
    {
    case LABEL_FLAG_SHAPE::L_INPUT:
    case LABEL_FLAG_SHAPE::L_BIDI:
    case LABEL_FLAG_SHAPE::L_TRISTATE:
        horiz += GetTextHeight() * 3 / 4; // Use three-quarters-height as proxy for triangle size
        break;
 
    case LABEL_FLAG_SHAPE::L_OUTPUT:
    case LABEL_FLAG_SHAPE::L_UNSPECIFIED:
    default: break;
    }
 
    switch( GetSpinStyle() )
    {
    default:
    case SPIN_STYLE::LEFT: return VECTOR2I( -horiz, vert );
    case SPIN_STYLE::UP: return VECTOR2I( vert, -horiz );
    case SPIN_STYLE::RIGHT: return VECTOR2I( horiz, vert );
    case SPIN_STYLE::BOTTOM: return VECTOR2I( vert, horiz );
    }
}
 
 
void SCH_GLOBALLABEL::SetSpinStyle( SPIN_STYLE aSpinStyle )
{
    SCH_LABEL_BASE::SetSpinStyle( aSpinStyle );
    SetVertJustify( GR_TEXT_V_ALIGN_CENTER );
}
 
 
bool SCH_GLOBALLABEL::ResolveTextVar( const SCH_SHEET_PATH* aPath, wxString* token, int aDepth ) const
{
    wxCHECK( aPath, false );
 
    SCHEMATIC* schematic = Schematic();
 
    if( !schematic )
        return false;
 
    if( token->IsSameAs( wxT( "INTERSHEET_REFS" ) ) )
    {
        SCHEMATIC_SETTINGS&                settings = schematic->Settings();
        std::map<wxString, std::set<int>>& pageRefs = schematic->GetPageRefsMap();
        wxString                           ref;
        auto                               it = pageRefs.end();
 
        // The map is keyed on the label's own shown text, so only a label carrying variables can
        // resolve through itself; that one has to stop before the stack does
        if( !HasTextVars() || aDepth < ADVANCED_CFG::GetCfg().m_ResolveTextRecursionDepth )
            it = pageRefs.find( GetShownText( aPath, FOR_GUI, aDepth ) );
 
        if( it == pageRefs.end() )
        {
            ref = "?";
        }
        else
        {
            std::vector<int> pageListCopy;
 
            pageListCopy.insert( pageListCopy.end(), it->second.begin(), it->second.end() );
            std::sort( pageListCopy.begin(), pageListCopy.end() );
 
            if( !settings.m_IntersheetRefsListOwnPage )
            {
                int currentPage = aPath->GetVirtualPageNumber();
                std::erase( pageListCopy, currentPage );
            }
 
            std::map<int, wxString> sheetPages = schematic->GetVirtualPageToSheetPagesMap();
 
            if( settings.m_IntersheetRefsFormatShort && pageListCopy.size() > 2 )
            {
                ref.Append( wxString::Format( wxT( "%s..%s" ),
                                              sheetPages[pageListCopy.front()],
                                              sheetPages[pageListCopy.back()] ) );
            }
            else
            {
                for( const int& pageNo : pageListCopy )
                    ref.Append( wxString::Format( wxT( "%s," ), sheetPages[pageNo] ) );
 
                if( !ref.IsEmpty() && ref.Last() == ',' )
                    ref.RemoveLast();
            }
        }
 
        *token = settings.m_IntersheetRefsPrefix + ref + settings.m_IntersheetRefsSuffix;
        return true;
    }
 
    return SCH_LABEL_BASE::ResolveTextVar( aPath, token, aDepth );
}
 
 
std::vector<int> SCH_GLOBALLABEL::ViewGetLayers() const
{
    return { LAYER_DANGLING,      LAYER_GLOBLABEL, LAYER_DEVICE,           LAYER_INTERSHEET_REFS,
             LAYER_NETCLASS_REFS, LAYER_FIELDS,    LAYER_SELECTION_SHADOWS };
}
 
 
void SCH_GLOBALLABEL::CreateGraphicShape( const RENDER_SETTINGS* aRenderSettings, std::vector<VECTOR2I>& aPoints,
                                          const VECTOR2I& aPos ) const
{
    int margin = GetLabelBoxExpansion( aRenderSettings );
    int halfSize = ( GetTextHeight() / 2 ) + margin;
    int linewidth = GetPenWidth();
    int symb_len = GetTextBox( aRenderSettings ).GetWidth() + 2 * margin;
 
    int x = symb_len + linewidth + 3;
    int y = halfSize + linewidth + 3;
 
    aPoints.clear();
 
    // Create outline shape : 6 points
    aPoints.emplace_back( VECTOR2I( 0, 0 ) );
    aPoints.emplace_back( VECTOR2I( 0, -y ) );  // Up
    aPoints.emplace_back( VECTOR2I( -x, -y ) ); // left
    aPoints.emplace_back( VECTOR2I( -x, 0 ) );  // Up left
    aPoints.emplace_back( VECTOR2I( -x, y ) );  // left down
    aPoints.emplace_back( VECTOR2I( 0, y ) );   // down
 
    int x_offset = 0;
 
    switch( m_shape )
    {
    case LABEL_FLAG_SHAPE::L_INPUT:
        x_offset = -halfSize;
        aPoints[0].x += halfSize;
        break;
 
    case LABEL_FLAG_SHAPE::L_OUTPUT: aPoints[3].x -= halfSize; break;
 
    case LABEL_FLAG_SHAPE::L_BIDI:
    case LABEL_FLAG_SHAPE::L_TRISTATE:
        x_offset = -halfSize;
        aPoints[0].x += halfSize;
        aPoints[3].x -= halfSize;
        break;
 
    case LABEL_FLAG_SHAPE::L_UNSPECIFIED:
    default: break;
    }
 
    // Rotate outlines and move corners in real position
    for( VECTOR2I& aPoint : aPoints )
    {
        aPoint.x += x_offset;
 
        switch( GetSpinStyle() )
        {
        default:
        case SPIN_STYLE::LEFT: break;
        case SPIN_STYLE::UP: RotatePoint( aPoint, -ANGLE_90 ); break;
        case SPIN_STYLE::RIGHT: RotatePoint( aPoint, ANGLE_180 ); break;
        case SPIN_STYLE::BOTTOM: RotatePoint( aPoint, ANGLE_90 ); break;
        }
 
        aPoint += aPos;
    }
 
    aPoints.push_back( aPoints[0] ); // closing
}
 
 
wxString SCH_GLOBALLABEL::GetItemDescription( UNITS_PROVIDER* aUnitsProvider, bool aFull ) const
{
    return wxString::Format( _( "Global Label '%s'" ), aFull ? GetShownText( FOR_GUI )
                                                             : KIUI::EllipsizeMenuText( GetText() ) );
}
 
 
BITMAPS SCH_GLOBALLABEL::GetMenuImage() const
{
    return BITMAPS::add_glabel;
}
 
 
SCH_HIERLABEL::SCH_HIERLABEL( const VECTOR2I& pos, const wxString& text, KICAD_T aType ) :
        SCH_LABEL_BASE( pos, text, aType )
{
    m_layer = LAYER_HIERLABEL;
    m_shape = LABEL_FLAG_SHAPE::L_INPUT;
    m_isDangling = true;
}
 
 
void SCH_HIERLABEL::Serialize( google::protobuf::Any& aContainer ) const
{
    kiapi::schematic::types::HierarchicalLabel label;
 
    packLabel( label, *this );
    label.set_shape( ToProtoEnum<LABEL_FLAG_SHAPE, kiapi::schematic::types::SchematicLabelShape>( GetShape() ) );
 
    kiapi::common::PackCustomProperties( label.mutable_custom_properties(), *this );
    aContainer.PackFrom( label );
}
 
 
bool SCH_HIERLABEL::Deserialize( const google::protobuf::Any& aContainer )
{
    kiapi::schematic::types::HierarchicalLabel label;
 
    if( !aContainer.UnpackTo( &label ) )
        return false;
 
    kiapi::common::UnpackCustomProperties( label.custom_properties(), *this );
 
    if( !unpackLabel( label, *this ) )
        return false;
 
    SetShape( FromProtoEnum<LABEL_FLAG_SHAPE, kiapi::schematic::types::SchematicLabelShape>( label.shape() ) );
 
    return true;
}
 
 
void SCH_HIERLABEL::SetSpinStyle( SPIN_STYLE aSpinStyle )
{
    SCH_LABEL_BASE::SetSpinStyle( aSpinStyle );
    SetVertJustify( GR_TEXT_V_ALIGN_CENTER );
}
 
 
void SCH_HIERLABEL::CreateGraphicShape( const RENDER_SETTINGS* aSettings, std::vector<VECTOR2I>& aPoints,
                                        const VECTOR2I& aPos ) const
{
    CreateGraphicShape( aSettings, aPoints, aPos, m_shape );
}
 
 
void SCH_HIERLABEL::CreateGraphicShape( const RENDER_SETTINGS* aSettings, std::vector<VECTOR2I>& aPoints,
                                        const VECTOR2I& aPos, LABEL_FLAG_SHAPE aShape ) const
{
    int* Template = TemplateShape[static_cast<int>( aShape )][static_cast<int>( GetSpinStyle() )];
    int  halfSize = GetTextHeight() / 2;
    int  imax = *Template;
    Template++;
 
    aPoints.clear();
 
    for( int ii = 0; ii < imax; ii++ )
    {
        VECTOR2I corner;
        corner.x = ( halfSize * ( *Template ) ) + aPos.x;
        Template++;
 
        corner.y = ( halfSize * ( *Template ) ) + aPos.y;
        Template++;
 
        aPoints.push_back( corner );
    }
}
 
 
const BOX2I SCH_HIERLABEL::GetBodyBoundingBox( const RENDER_SETTINGS* aSettings ) const
{
    int penWidth = GetEffectiveTextPenWidth();
    int margin = GetTextOffset();
 
    int x = GetTextPos().x;
    int y = GetTextPos().y;
 
    int height = GetTextHeight() + penWidth + margin;
    int length = GetTextBox( aSettings ).GetWidth();
 
    length += height; // add height for triangular shapes
 
    int dx, dy;
 
    switch( GetSpinStyle() )
    {
    default:
    case SPIN_STYLE::LEFT:
        dx = -length;
        dy = height;
        x += schIUScale.MilsToIU( DANGLING_SYMBOL_SIZE );
        y -= height / 2;
        break;
 
    case SPIN_STYLE::UP:
        dx = height;
        dy = -length;
        x -= height / 2;
        y += schIUScale.MilsToIU( DANGLING_SYMBOL_SIZE );
        break;
 
    case SPIN_STYLE::RIGHT:
        dx = length;
        dy = height;
        x -= schIUScale.MilsToIU( DANGLING_SYMBOL_SIZE );
        y -= height / 2;
        break;
 
    case SPIN_STYLE::BOTTOM:
        dx = height;
        dy = length;
        x -= height / 2;
        y -= schIUScale.MilsToIU( DANGLING_SYMBOL_SIZE );
        break;
    }
 
    BOX2I box( VECTOR2I( x, y ), VECTOR2I( dx, dy ) );
    box.Normalize();
    return box;
}
 
 
VECTOR2I SCH_HIERLABEL::GetSchematicTextOffset( const RENDER_SETTINGS* aSettings ) const
{
    VECTOR2I text_offset;
    int      dist = GetTextOffset( aSettings );
 
    dist += GetTextWidth();
 
    switch( GetSpinStyle() )
    {
    default:
    case SPIN_STYLE::LEFT:   text_offset.x = -dist; break;   // Orientation horiz normale
    case SPIN_STYLE::UP:     text_offset.y = -dist; break;   // Orientation vert UP
    case SPIN_STYLE::RIGHT:  text_offset.x = dist;  break;   // Orientation horiz inverse
    case SPIN_STYLE::BOTTOM: text_offset.y = dist;  break;   // Orientation vert BOTTOM
    }
 
    return text_offset;
}
 
 
wxString SCH_HIERLABEL::GetItemDescription( UNITS_PROVIDER* aUnitsProvider, bool aFull ) const
{
    return wxString::Format( _( "Hierarchical Label '%s'" ), aFull ? GetShownText( FOR_GUI )
                                                                   : KIUI::EllipsizeMenuText( GetText() ) );
}
 
 
BITMAPS SCH_HIERLABEL::GetMenuImage() const
{
    return BITMAPS::add_hierarchical_label;
}
 
 
HTML_MESSAGE_BOX* SCH_TEXT::ShowSyntaxHelp( wxWindow* aParentWindow )
{
    wxString msg =
#include "sch_text_help_md.h"
            ;
 
    HTML_MESSAGE_BOX* dlg = new HTML_MESSAGE_BOX( aParentWindow, _( "Syntax Help" ) );
    wxSize            sz( 320, 320 );
 
    dlg->SetMinSize( dlg->ConvertDialogToPixels( sz ) );
    dlg->SetDialogSizeInDU( sz.x, sz.y );
 
    wxString html_txt;
    ConvertMarkdown2Html( wxGetTranslation( msg ), html_txt );
    dlg->AddHTML_Text( html_txt );
    dlg->ShowModeless();
 
    return dlg;
}
 
 
static struct SCH_LABEL_DESC
{
    SCH_LABEL_DESC()
    {
        auto& labelShapeEnum = ENUM_MAP<LABEL_SHAPE>::Instance();
 
        if( labelShapeEnum.Choices().GetCount() == 0 )
        {
            labelShapeEnum.Map( LABEL_SHAPE::LABEL_INPUT, _HKI( "Input" ) )
                    .Map( LABEL_SHAPE::LABEL_OUTPUT, _HKI( "Output" ) )
                    .Map( LABEL_SHAPE::LABEL_BIDI, _HKI( "Bidirectional" ) )
                    .Map( LABEL_SHAPE::LABEL_TRISTATE, _HKI( "Tri-state" ) )
                    .Map( LABEL_SHAPE::LABEL_PASSIVE, _HKI( "Passive" ) );
        }
 
        PROPERTY_MANAGER& propMgr = PROPERTY_MANAGER::Instance();
        REGISTER_TYPE( SCH_LABEL_BASE );
        REGISTER_TYPE( SCH_LABEL );
        REGISTER_TYPE( SCH_HIERLABEL );
 
        propMgr.AddTypeCast( new TYPE_CAST<SCH_LABEL, SCH_LABEL_BASE> );
        propMgr.AddTypeCast( new TYPE_CAST<SCH_HIERLABEL, SCH_LABEL_BASE> );
        propMgr.AddTypeCast( new TYPE_CAST<SCH_GLOBALLABEL, SCH_LABEL_BASE> );
 
        propMgr.AddTypeCast( new TYPE_CAST<SCH_LABEL, SCH_TEXT> );
        propMgr.AddTypeCast( new TYPE_CAST<SCH_HIERLABEL, SCH_TEXT> );
        propMgr.AddTypeCast( new TYPE_CAST<SCH_GLOBALLABEL, SCH_TEXT> );
 
        propMgr.AddTypeCast( new TYPE_CAST<SCH_LABEL, EDA_TEXT> );
        propMgr.AddTypeCast( new TYPE_CAST<SCH_HIERLABEL, EDA_TEXT> );
        propMgr.AddTypeCast( new TYPE_CAST<SCH_GLOBALLABEL, EDA_TEXT> );
 
        propMgr.InheritsAfter( TYPE_HASH( SCH_LABEL_BASE ), TYPE_HASH( SCH_TEXT ) );
        propMgr.InheritsAfter( TYPE_HASH( SCH_LABEL ), TYPE_HASH( SCH_LABEL_BASE ) );
        propMgr.InheritsAfter( TYPE_HASH( SCH_HIERLABEL ), TYPE_HASH( SCH_LABEL_BASE ) );
        propMgr.InheritsAfter( TYPE_HASH( SCH_GLOBALLABEL ), TYPE_HASH( SCH_LABEL_BASE ) );
 
        auto hasLabelShape = []( INSPECTABLE* aItem ) -> bool
        {
            if( SCH_LABEL_BASE* label = dynamic_cast<SCH_LABEL_BASE*>( aItem ) )
                return label->IsType( { SCH_GLOBAL_LABEL_T, SCH_HIER_LABEL_T, SCH_SHEET_PIN_T } );
 
            return false;
        };
 
        propMgr.AddProperty( new PROPERTY_ENUM<SCH_LABEL_BASE, LABEL_SHAPE>( _HKI( "Shape" ),
                    &SCH_LABEL_BASE::SetLabelShape, &SCH_LABEL_BASE::GetLabelShape ) )
                .SetAvailableFunc( hasLabelShape );
 
        propMgr.Mask( TYPE_HASH( SCH_LABEL_BASE ), TYPE_HASH( EDA_TEXT ), _HKI( "Hyperlink" ) );
    }
} _SCH_LABEL_DESC;
 
 
static struct SCH_DIRECTIVE_LABEL_DESC
{
    SCH_DIRECTIVE_LABEL_DESC()
    {
        auto& flagShapeEnum = ENUM_MAP<FLAG_SHAPE>::Instance();
 
        if( flagShapeEnum.Choices().GetCount() == 0 )
        {
            flagShapeEnum.Map( FLAG_SHAPE::FLAG_DOT, _HKI( "Dot" ) )
                    .Map( FLAG_SHAPE::FLAG_CIRCLE, _HKI( "Circle" ) )
                    .Map( FLAG_SHAPE::FLAG_DIAMOND, _HKI( "Diamond" ) )
                    .Map( FLAG_SHAPE::FLAG_RECTANGLE, _HKI( "Rectangle" ) );
        }
 
        PROPERTY_MANAGER& propMgr = PROPERTY_MANAGER::Instance();
        REGISTER_TYPE( SCH_DIRECTIVE_LABEL );
        propMgr.AddTypeCast( new TYPE_CAST<SCH_DIRECTIVE_LABEL, SCH_LABEL_BASE> );
        propMgr.AddTypeCast( new TYPE_CAST<SCH_DIRECTIVE_LABEL, SCH_TEXT> );
        propMgr.AddTypeCast( new TYPE_CAST<SCH_DIRECTIVE_LABEL, EDA_TEXT> );
 
        propMgr.InheritsAfter( TYPE_HASH( SCH_DIRECTIVE_LABEL ), TYPE_HASH( SCH_LABEL_BASE ) );
 
        propMgr.AddProperty( new PROPERTY_ENUM<SCH_DIRECTIVE_LABEL, FLAG_SHAPE>( _HKI( "Shape" ),
                    &SCH_DIRECTIVE_LABEL::SetFlagShape, &SCH_DIRECTIVE_LABEL::GetFlagShape ) );
 
        propMgr.AddProperty( new PROPERTY<SCH_DIRECTIVE_LABEL, int>( _HKI( "Pin length" ),
                    &SCH_DIRECTIVE_LABEL::SetPinLength, &SCH_DIRECTIVE_LABEL::GetPinLength,
                    PROPERTY_DISPLAY::PT_SIZE ) );
 
        propMgr.Mask( TYPE_HASH( SCH_DIRECTIVE_LABEL ), TYPE_HASH( EDA_TEXT ), _HKI( "Text" ) );
        propMgr.Mask( TYPE_HASH( SCH_DIRECTIVE_LABEL ), TYPE_HASH( EDA_TEXT ), _HKI( "Thickness" ) );
        propMgr.Mask( TYPE_HASH( SCH_DIRECTIVE_LABEL ), TYPE_HASH( EDA_TEXT ), _HKI( "Italic" ) );
        propMgr.Mask( TYPE_HASH( SCH_DIRECTIVE_LABEL ), TYPE_HASH( EDA_TEXT ), _HKI( "Bold" ) );
        propMgr.Mask( TYPE_HASH( SCH_DIRECTIVE_LABEL ), TYPE_HASH( EDA_TEXT ), _HKI( "Horizontal Justification" ) );
        propMgr.Mask( TYPE_HASH( SCH_DIRECTIVE_LABEL ), TYPE_HASH( EDA_TEXT ), _HKI( "Vertical Justification" ) );
    }
} _SCH_DIRECTIVE_LABEL_DESC;
 
 
ENUM_TO_WXANY( LABEL_SHAPE )
ENUM_TO_WXANY( FLAG_SHAPE )