/*
 * 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 <stambaughw@gmail.com>
 * Copyright (C) 1992-2021 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
 */

/**
 * @file sch_text.cpp
 * @brief Code for handling schematic texts (texts, labels, hlabels and global labels).
 */

#include <sch_symbol.h>
#include <sch_edit_frame.h>
#include <plotters/plotter.h>
#include <widgets/msgpanel.h>
#include <gal/stroke_font.h>
#include <bitmaps.h>
#include <string_utils.h>
#include <sch_text.h>
#include <schematic.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/mirror.h>
#include <core/kicad_algo.h>
#include <trigo.h>

using KIGFX::SCH_RENDER_SETTINGS;


bool IncrementLabelMember( wxString& name, int aIncrement )
{
    if( name.IsEmpty() )
        return true;

    wxString suffix;
    wxString digits;
    wxString outputFormat;
    wxString outputNumber;
    int      ii     = name.Len() - 1;
    int      dCount = 0;

    while( ii >= 0 && !wxIsdigit( name.GetChar( ii ) ) )
    {
        suffix = name.GetChar( ii ) + suffix;
        ii--;
    }

    while( ii >= 0 && wxIsdigit( name.GetChar( ii ) ) )
    {
        digits = name.GetChar( ii ) + digits;
        ii--;
        dCount++;
    }

    if( digits.IsEmpty() )
        return true;

    long number = 0;

    if( digits.ToLong( &number ) )
    {
        number += aIncrement;

        // Don't let result go below zero

        if( number > -1 )
        {
            name.Remove( ii + 1 );
            //write out a format string with correct number of leading zeroes
            outputFormat.Printf( wxT( "%%0%dd" ), dCount );
            //write out the number using the format string
            outputNumber.Printf( outputFormat, number );
            name << outputNumber << suffix;
            return true;
        }
    }

    return false;
}


/* 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  }
};


LABEL_SPIN_STYLE LABEL_SPIN_STYLE::RotateCW()
{
    SPIN newSpin = m_spin;

    switch( m_spin )
    {
    case LABEL_SPIN_STYLE::LEFT:   newSpin = LABEL_SPIN_STYLE::UP;     break;
    case LABEL_SPIN_STYLE::UP:     newSpin = LABEL_SPIN_STYLE::RIGHT;  break;
    case LABEL_SPIN_STYLE::RIGHT:  newSpin = LABEL_SPIN_STYLE::BOTTOM; break;
    case LABEL_SPIN_STYLE::BOTTOM: newSpin = LABEL_SPIN_STYLE::LEFT;   break;
    default: wxLogWarning( wxT( "RotateCW encountered unknown current spin style" ) ); break;
    }

    return LABEL_SPIN_STYLE( newSpin );
}


LABEL_SPIN_STYLE LABEL_SPIN_STYLE::RotateCCW()
{
    SPIN newSpin = m_spin;

    switch( m_spin )
    {
    case LABEL_SPIN_STYLE::LEFT:   newSpin = LABEL_SPIN_STYLE::BOTTOM; break;
    case LABEL_SPIN_STYLE::BOTTOM: newSpin = LABEL_SPIN_STYLE::RIGHT;  break;
    case LABEL_SPIN_STYLE::RIGHT:  newSpin = LABEL_SPIN_STYLE::UP;     break;
    case LABEL_SPIN_STYLE::UP:     newSpin = LABEL_SPIN_STYLE::LEFT;   break;
    default: wxLogWarning( wxT( "RotateCCW encountered unknown current spin style" ) ); break;
    }

    return LABEL_SPIN_STYLE( newSpin );
}


LABEL_SPIN_STYLE LABEL_SPIN_STYLE::MirrorX()
{
    SPIN newSpin = m_spin;

    switch( m_spin )
    {
    case LABEL_SPIN_STYLE::UP:     newSpin = LABEL_SPIN_STYLE::BOTTOM; break;
    case LABEL_SPIN_STYLE::BOTTOM: newSpin = LABEL_SPIN_STYLE::UP;     break;
    case LABEL_SPIN_STYLE::LEFT:                                       break;
    case LABEL_SPIN_STYLE::RIGHT:                                      break;
    default: wxLogWarning( wxT( "MirrorX encountered unknown current spin style" ) ); break;
    }

    return LABEL_SPIN_STYLE( newSpin );
}


LABEL_SPIN_STYLE LABEL_SPIN_STYLE::MirrorY()
{
    SPIN newSpin = m_spin;

    switch( m_spin )
    {
    case LABEL_SPIN_STYLE::LEFT:  newSpin = LABEL_SPIN_STYLE::RIGHT; break;
    case LABEL_SPIN_STYLE::RIGHT: newSpin = LABEL_SPIN_STYLE::LEFT;  break;
    case LABEL_SPIN_STYLE::UP:                                       break;
    case LABEL_SPIN_STYLE::BOTTOM:                                   break;
    default: wxLogWarning( wxT( "MirrorY encountered unknown current spin style" ) ); break;
    }

    return LABEL_SPIN_STYLE( newSpin );
}


SCH_TEXT::SCH_TEXT( const wxPoint& pos, const wxString& text, KICAD_T aType ) :
        SCH_ITEM( nullptr, aType ),
        EDA_TEXT( text ),
        m_shape( PINSHEETLABEL_SHAPE::PS_INPUT ),
        m_isDangling( false ),
        m_connectionType( CONNECTION_TYPE::NONE )
{
    m_layer = LAYER_NOTES;

    SetTextPos( pos );
    SetLabelSpinStyle( LABEL_SPIN_STYLE::LEFT );
    SetMultilineAllowed( true );
}


SCH_TEXT::SCH_TEXT( const SCH_TEXT& aText ) :
        SCH_ITEM( aText ),
        EDA_TEXT( aText ),
        m_shape( aText.m_shape ),
        m_isDangling( aText.m_isDangling ),
        m_connectionType( aText.m_connectionType ),
        m_spin_style( aText.m_spin_style )
{ }


EDA_ITEM* SCH_TEXT::Clone() const
{
    return new SCH_TEXT( *this );
}


bool SCH_TEXT::IncrementLabel( int aIncrement )
{
    wxString text = GetText();
    bool ReturnVal = IncrementLabelMember( text, aIncrement );

    if( ReturnVal )
        SetText( text );

    return ReturnVal;
}


wxPoint SCH_TEXT::GetSchematicTextOffset( const RENDER_SETTINGS* aSettings ) const
{
    wxPoint 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( GetLabelSpinStyle() )
    {
    case LABEL_SPIN_STYLE::UP:
    case LABEL_SPIN_STYLE::BOTTOM:
        text_offset.x = -dist;
        break; // Vert Orientation
    default:
    case LABEL_SPIN_STYLE::LEFT:
    case LABEL_SPIN_STYLE::RIGHT:
        text_offset.y = -dist;
        break; // Horiz Orientation
    }

    return text_offset;
}


void SCH_TEXT::MirrorHorizontally( int aCenter )
{
    // Text is NOT really mirrored; it is moved to a suitable horizontal position
    SetLabelSpinStyle( GetLabelSpinStyle().MirrorY() );

    SetTextX( MIRRORVAL( GetTextPos().x, aCenter ) );
}


void SCH_TEXT::MirrorVertically( int aCenter )
{
    // Text is NOT really mirrored; it is moved to a suitable vertical position
    SetLabelSpinStyle( GetLabelSpinStyle().MirrorX() );

    SetTextY( MIRRORVAL( GetTextPos().y, aCenter ) );
}


void SCH_TEXT::Rotate( const wxPoint& aCenter )
{
    wxPoint pt = GetTextPos();
    RotatePoint( &pt, aCenter, 900 );
    wxPoint offset = pt - GetTextPos();

    Rotate90( false );

    SetTextPos( GetTextPos() + offset );
}


void SCH_TEXT::Rotate90( bool aClockwise )
{
    if( aClockwise )
        SetLabelSpinStyle( GetLabelSpinStyle().RotateCW() );
    else
        SetLabelSpinStyle( GetLabelSpinStyle().RotateCCW() );
}


void SCH_TEXT::MirrorSpinStyle( bool aLeftRight )
{
    if( aLeftRight )
        SetLabelSpinStyle( GetLabelSpinStyle().MirrorY() );
    else
        SetLabelSpinStyle( GetLabelSpinStyle().MirrorX() );
}


void SCH_TEXT::SetLabelSpinStyle( LABEL_SPIN_STYLE aSpinStyle )
{
    m_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:
        wxASSERT_MSG( 1, wxT( "Bad spin style" ) );
        break;

    case LABEL_SPIN_STYLE::RIGHT: // Horiz Normal Orientation
        //
        m_spin_style = LABEL_SPIN_STYLE::RIGHT; // Handle the error spin style by resetting
        SetTextAngle( TEXT_ANGLE_HORIZ );
        SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );
        SetVertJustify( GR_TEXT_VJUSTIFY_BOTTOM );
        break;

    case LABEL_SPIN_STYLE::UP: // Vert Orientation UP
        SetTextAngle( TEXT_ANGLE_VERT );
        SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );
        SetVertJustify( GR_TEXT_VJUSTIFY_BOTTOM );
        break;

    case LABEL_SPIN_STYLE::LEFT: // Horiz Orientation - Right justified
        SetTextAngle( TEXT_ANGLE_HORIZ );
        SetHorizJustify( GR_TEXT_HJUSTIFY_RIGHT );
        SetVertJustify( GR_TEXT_VJUSTIFY_BOTTOM );
        break;

    case LABEL_SPIN_STYLE::BOTTOM: //  Vert Orientation BOTTOM
        SetTextAngle( TEXT_ANGLE_VERT );
        SetHorizJustify( GR_TEXT_HJUSTIFY_RIGHT );
        SetVertJustify( GR_TEXT_VJUSTIFY_BOTTOM );
        break;
    }
}


void SCH_TEXT::SwapData( SCH_ITEM* aItem )
{
    SCH_TEXT* item = (SCH_TEXT*) aItem;

    std::swap( m_layer, item->m_layer );

    std::swap( m_shape, item->m_shape );
    std::swap( m_isDangling, item->m_isDangling );
    std::swap( m_spin_style, item->m_spin_style );

    SwapText( *item );
    SwapEffects( *item );
}


bool SCH_TEXT::operator<( const SCH_ITEM& aItem ) const
{
    if( Type() != aItem.Type() )
        return Type() < aItem.Type();

    auto other = static_cast<const SCH_TEXT*>( &aItem );

    if( GetLayer() != other->GetLayer() )
            return GetLayer() < other->GetLayer();

    if( GetPosition().x != other->GetPosition().x )
        return GetPosition().x < other->GetPosition().x;

    if( GetPosition().y != other->GetPosition().y )
        return GetPosition().y < other->GetPosition().y;

    return GetText() < other->GetText();
}


int SCH_TEXT::GetTextOffset( const RENDER_SETTINGS* aSettings ) const
{
    double ratio;

    if( aSettings )
        ratio = static_cast<const SCH_RENDER_SETTINGS*>( aSettings )->m_TextOffsetRatio;
    else if( Schematic() )
        ratio = Schematic()->Settings().m_TextOffsetRatio;
    else
        ratio = DEFAULT_TEXT_OFFSET_RATIO;   // For previews (such as in Preferences), etc.

    return KiROUND( ratio * GetTextSize().y );

    return 0;
}


int SCH_TEXT::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 );

    return 0;
}


int SCH_TEXT::GetPenWidth() const
{
    return GetEffectiveTextPenWidth();
}


void SCH_TEXT::Print( const RENDER_SETTINGS* aSettings, const wxPoint& aOffset )
{
    COLOR4D color = aSettings->GetLayerColor( m_layer );
    wxPoint text_offset = aOffset + GetSchematicTextOffset( aSettings );

    EDA_TEXT::Print( aSettings, text_offset, color );
}


void SCH_TEXT::GetEndPoints( std::vector <DANGLING_END_ITEM>& aItemList )
{
    // Normal text labels cannot be tested for dangling ends.
    if( Type() == SCH_TEXT_T )
        return;

    DANGLING_END_ITEM item( LABEL_END, this, GetTextPos() );
    aItemList.push_back( item );
}


bool SCH_TEXT::UpdateDanglingState( std::vector<DANGLING_END_ITEM>& aItemList,
                                    const SCH_SHEET_PATH* aPath )
{
    // Normal text labels cannot be tested for dangling ends.
    if( Type() == SCH_TEXT_T )
        return false;

    bool previousState = m_isDangling;
    m_isDangling       = true;
    m_connectionType   = CONNECTION_TYPE::NONE;

    for( unsigned ii = 0; ii < aItemList.size(); ii++ )
    {
        DANGLING_END_ITEM& item = aItemList[ii];

        if( item.GetItem() == this )
            continue;

        switch( item.GetType() )
        {
        case PIN_END:
        case LABEL_END:
        case SHEET_LABEL_END:
        case NO_CONNECT_END:
            if( GetTextPos() == item.GetPosition() )
            {
                m_isDangling = false;

                if( aPath && item.GetType() != PIN_END )
                    AddConnectionTo( *aPath, static_cast<SCH_ITEM*>( item.GetItem() ) );
            }

            break;

        case BUS_END:
            m_connectionType = CONNECTION_TYPE::BUS;
            KI_FALLTHROUGH;

        case WIRE_END:
        {
            DANGLING_END_ITEM& nextItem = aItemList[++ii];

            int accuracy = 1;   // We have rounding issues with an accuracy of 0

            m_isDangling = !TestSegmentHit( GetTextPos(), item.GetPosition(),
                                            nextItem.GetPosition(), accuracy );

            if( !m_isDangling )
            {
                if( m_connectionType != CONNECTION_TYPE::BUS )
                    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;

        default:
            break;
        }

        if( !m_isDangling )
            break;
    }

    if( m_isDangling )
        m_connectionType = CONNECTION_TYPE::NONE;

    return previousState != m_isDangling;
}


std::vector<wxPoint> SCH_TEXT::GetConnectionPoints() const
{
    // Normal text labels do not have connection points.  All others do.
    if( Type() == SCH_TEXT_T )
        return {};

    return { GetTextPos() };
}


const EDA_RECT SCH_TEXT::GetBoundingBox() const
{
    EDA_RECT rect = GetTextBox();

    if( GetTextAngle() != 0 ) // Rotate rect.
    {
        wxPoint pos = rect.GetOrigin();
        wxPoint end = rect.GetEnd();

        RotatePoint( &pos, GetTextPos(), GetTextAngle() );
        RotatePoint( &end, GetTextPos(), GetTextAngle() );

        rect.SetOrigin( pos );
        rect.SetEnd( end );
    }

    rect.Normalize();
    return rect;
}


wxString getElectricalTypeLabel( PINSHEETLABEL_SHAPE aType )
{
    switch( aType )
    {
    case PINSHEETLABEL_SHAPE::PS_INPUT:       return _( "Input" );
    case PINSHEETLABEL_SHAPE::PS_OUTPUT:      return _( "Output" );
    case PINSHEETLABEL_SHAPE::PS_BIDI:        return _( "Bidirectional" );
    case PINSHEETLABEL_SHAPE::PS_TRISTATE:    return _( "Tri-State" );
    case PINSHEETLABEL_SHAPE::PS_UNSPECIFIED: return _( "Passive" );
    default:                                  return wxT( "???" );
    }
}


void SCH_TEXT::GetContextualTextVars( wxArrayString* aVars ) const
{
    if( Type() == SCH_GLOBAL_LABEL_T || Type() == SCH_HIER_LABEL_T || Type() == SCH_SHEET_PIN_T )
        aVars->push_back( wxT( "CONNECTION_TYPE" ) );

    if( Type() == SCH_SHEET_PIN_T && m_parent )
        static_cast<SCH_SHEET*>( m_parent )->GetContextualTextVars( aVars );
}


wxString SCH_TEXT::GetShownText( int aDepth, bool aAllowExtraText ) const
{
    std::function<bool( wxString* )> textResolver =
            [&]( wxString* token ) -> bool
            {
                if( ( Type() == SCH_GLOBAL_LABEL_T
                        || Type() == SCH_HIER_LABEL_T
                        || Type() == SCH_SHEET_PIN_T )
                     && token->IsSameAs( wxT( "CONNECTION_TYPE" ) ) )
                {
                    *token = getElectricalTypeLabel( GetShape() );
                    return true;
                }

                if( Type() == SCH_SHEET_PIN_T && m_parent )
                {
                    SCH_SHEET* sheet = static_cast<SCH_SHEET*>( m_parent );

                    if( sheet->ResolveTextVar( token, aDepth ) )
                        return true;
                }

                if( token->Contains( ':' ) )
                {
                    if( Schematic()->ResolveCrossReference( token, aDepth ) )
                        return true;
                }
                else
                {
                    SCHEMATIC* schematic = Schematic();
                    SCH_SHEET* sheet = schematic ? schematic->CurrentSheet().Last() : nullptr;

                    if( sheet && sheet->ResolveTextVar( token, aDepth + 1 ) )
                        return true;
                }

                return false;
            };

    std::function<bool( wxString* )> schematicTextResolver =
            [&]( wxString* token ) -> bool
            {
                return Schematic()->ResolveTextVar( token, aDepth + 1 );
            };

    wxString text = EDA_TEXT::GetShownText();

    if( text == wxT( "~" ) )   // Legacy placeholder for empty string
    {
        text = "";
    }
    else if( HasTextVars() )
    {
        wxCHECK_MSG( Schematic(), wxEmptyString, wxT( "No parent SCHEMATIC set for SCH_TEXT!" ) );

        PROJECT* project = nullptr;

        if( Schematic() )
            project = &Schematic()->Prj();

        if( aDepth < 10 )
            text = ExpandTextVars( text, &textResolver, &schematicTextResolver, project );
    }

    return text;
}


wxString SCH_TEXT::GetSelectMenuText( EDA_UNITS aUnits ) const
{
    return wxString::Format( _( "Graphic Text '%s'" ), ShortenedShownText() );
}


BITMAPS SCH_TEXT::GetMenuImage() const
{
    return BITMAPS::text;
}


bool SCH_TEXT::HitTest( const wxPoint& aPosition, int aAccuracy ) const
{
    EDA_RECT bBox = GetBoundingBox();
    bBox.Inflate( aAccuracy );
    return bBox.Contains( aPosition );
}


bool SCH_TEXT::HitTest( const EDA_RECT& aRect, bool aContained, int aAccuracy ) const
{
    EDA_RECT bBox = GetBoundingBox();
    bBox.Inflate( aAccuracy );

    if( aContained )
        return aRect.Contains( bBox );

    return aRect.Intersects( bBox );
}


void SCH_TEXT::Plot( PLOTTER* aPlotter ) const
{
    static std::vector<wxPoint> s_poly;

    RENDER_SETTINGS* settings = aPlotter->RenderSettings();
    SCH_CONNECTION*  connection = Connection();
    int              layer = ( connection && connection->IsBus() ) ? LAYER_BUS : m_layer;
    COLOR4D          color = settings->GetLayerColor( layer );
    int              penWidth = GetEffectiveTextPenWidth( settings->GetDefaultPenWidth() );

    penWidth = std::max( penWidth, settings->GetMinPenWidth() );
    aPlotter->SetCurrentLineWidth( penWidth );

    if( IsMultilineAllowed() )
    {
        std::vector<wxPoint> positions;
        wxArrayString strings_list;
        wxStringSplit( GetShownText(), strings_list, '\n' );
        positions.reserve( strings_list.Count() );

        GetLinePositions( positions, (int) strings_list.Count() );

        for( unsigned ii = 0; ii < strings_list.Count(); ii++ )
        {
            wxPoint textpos = positions[ii] + GetSchematicTextOffset( aPlotter->RenderSettings() );
            wxString& txt = strings_list.Item( ii );
            aPlotter->Text( textpos, color, txt, GetTextAngle(), GetTextSize(), GetHorizJustify(),
                            GetVertJustify(), penWidth, IsItalic(), IsBold() );
        }
    }
    else
    {
        wxPoint textpos = GetTextPos() + GetSchematicTextOffset( aPlotter->RenderSettings() );

        aPlotter->Text( textpos, color, GetShownText(), GetTextAngle(), GetTextSize(),
                        GetHorizJustify(), GetVertJustify(), penWidth, IsItalic(), IsBold() );
    }

    // Draw graphic symbol for global or hierarchical labels
    CreateGraphicShape( aPlotter->RenderSettings(), s_poly, GetTextPos() );

    if( s_poly.size() )
        aPlotter->PlotPoly( s_poly, FILL_T::NO_FILL, penWidth );
}


void SCH_TEXT::GetMsgPanelInfo( EDA_DRAW_FRAME* aFrame, std::vector<MSG_PANEL_ITEM>& aList )
{
    wxString msg;

    switch( Type() )
    {
    case SCH_TEXT_T:          msg = _( "Graphic Text" );           break;
    case SCH_LABEL_T:         msg = _( "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() ) );

    wxString textStyle[] = { _( "Normal" ), _( "Italic" ), _( "Bold" ), _( "Bold Italic" ) };
    int style = 0;

    if( IsItalic() )
        style = 1;

    if( IsBold() )
        style += 2;

    aList.emplace_back( _( "Style" ), textStyle[style] );

    aList.emplace_back( _( "Text Size" ), MessageTextFromValue( aFrame->GetUserUnits(),
                                                                GetTextWidth() ) );

    switch( GetLabelSpinStyle() )
    {
    case LABEL_SPIN_STYLE::LEFT:   msg = _( "Align right" );   break;
    case LABEL_SPIN_STYLE::UP:     msg = _( "Align bottom" );  break;
    case LABEL_SPIN_STYLE::RIGHT:  msg = _( "Align left" );    break;
    case LABEL_SPIN_STYLE::BOTTOM: msg = _( "Align top" );     break;
    default:                       msg = wxT( "???" );         break;
    }

    aList.emplace_back( _( "Justification" ), msg );

    SCH_CONNECTION* conn = nullptr;

    if( !IsConnectivityDirty() && dynamic_cast<SCH_EDIT_FRAME*>( aFrame ) )
        conn = Connection();

    if( conn )
    {
        conn->AppendInfoToMsgPanel( aList );

        if( !conn->IsBus() )
        {
            NET_SETTINGS& netSettings = Schematic()->Prj().GetProjectFile().NetSettings();
            const wxString& netname = conn->Name( true );

            if( netSettings.m_NetClassAssignments.count( netname ) )
            {
                const wxString& netclassName = netSettings.m_NetClassAssignments[ netname ];
                aList.emplace_back( _( "Assigned Netclass" ), netclassName );
            }
        }
    }
}


#if defined(DEBUG)

void SCH_TEXT::Show( int nestLevel, std::ostream& os ) const
{
    // XML output:
    wxString s = GetClass();

    NestedSpace( nestLevel, os ) << '<' << s.Lower().mb_str()
                                 << " layer=\"" << m_layer << '"'
                                 << " shape=\"" << static_cast<int>( m_shape ) << '"'
                                 << " dangling=\"" << m_isDangling << '"'
                                 << '>'
                                 << TO_UTF8( GetText() )
                                 << "</" << s.Lower().mb_str() << ">\n";
}

#endif


SCH_LABEL::SCH_LABEL( const wxPoint& pos, const wxString& text )
        : SCH_TEXT( pos, text, SCH_LABEL_T )
{
    m_layer      = LAYER_LOCLABEL;
    m_shape      = PINSHEETLABEL_SHAPE::PS_INPUT;
    m_isDangling = true;
    SetMultilineAllowed( false );
}


EDA_ITEM* SCH_LABEL::Clone() const
{
    return new SCH_LABEL( *this );
}


bool SCH_LABEL::IsType( const KICAD_T aScanTypes[] ) const
{
    static KICAD_T wireTypes[] = { SCH_LINE_LOCATE_WIRE_T, SCH_PIN_T, EOT };
    static KICAD_T busTypes[] = { SCH_LINE_LOCATE_BUS_T, EOT };

    if( SCH_ITEM::IsType( aScanTypes ) )
        return true;

    wxCHECK_MSG( Schematic(), false, wxT( "No parent SCHEMATIC set for SCH_LABEL!" ) );

    // Ensure m_connected_items for Schematic()->CurrentSheet() exists.
    // Can be not the case when "this" is living in clipboard
    if( m_connected_items.find( Schematic()->CurrentSheet() ) == m_connected_items.end() )
        return false;

    const SCH_ITEM_SET& item_set = m_connected_items.at( Schematic()->CurrentSheet() );

    for( const KICAD_T* p = aScanTypes; *p != EOT; ++p )
    {
        if( *p == SCH_LABEL_LOCATE_WIRE_T )
        {
            for( SCH_ITEM* connection : item_set )
            {
                if( connection->IsType( wireTypes ) )
                    return true;
            }
        }
        else if ( *p == SCH_LABEL_LOCATE_BUS_T )
        {
            for( SCH_ITEM* connection : item_set )
            {
                if( connection->IsType( busTypes ) )
                    return true;
            }
        }
    }

    return false;
}


const EDA_RECT SCH_LABEL::GetBoundingBox() const
{
    EDA_RECT rect = GetTextBox();

    rect.Offset( 0, -GetTextOffset() );

    if( GetTextAngle() != 0.0 )
    {
        // Rotate rect
        wxPoint pos = rect.GetOrigin();
        wxPoint 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;
}


void SCH_TEXT::ViewGetLayers( int aLayers[], int& aCount ) const
{
    aCount = 0;

    if( m_layer != LAYER_NOTES )
        aLayers[ aCount++ ] = LAYER_DANGLING;

    aLayers[ aCount++ ] = m_layer;
    aLayers[ aCount++ ] = LAYER_SELECTION_SHADOWS;
}


wxString SCH_LABEL::GetSelectMenuText( EDA_UNITS aUnits ) const
{
    return wxString::Format( _( "Label '%s'" ), ShortenedShownText() );
}


BITMAPS SCH_LABEL::GetMenuImage() const
{
    return BITMAPS::add_line_label;
}


SCH_GLOBALLABEL::SCH_GLOBALLABEL( const wxPoint& pos, const wxString& text ) :
        SCH_TEXT( pos, text, SCH_GLOBAL_LABEL_T ),
        m_intersheetRefsField( { 0, 0 }, 0, this )
{
    m_layer      = LAYER_GLOBLABEL;
    m_shape      = PINSHEETLABEL_SHAPE::PS_BIDI;
    m_isDangling = true;
    SetMultilineAllowed( false );

    SetVertJustify( GR_TEXT_VJUSTIFY_CENTER );

    m_intersheetRefsField.SetText( wxT( "${INTERSHEET_REFS}" ) );
    m_intersheetRefsField.SetLayer( LAYER_GLOBLABEL );
    m_intersheetRefsField.SetVertJustify( GR_TEXT_VJUSTIFY_CENTER );
    m_fieldsAutoplaced = FIELDS_AUTOPLACED_AUTO;
}


SCH_GLOBALLABEL::SCH_GLOBALLABEL( const SCH_GLOBALLABEL& aGlobalLabel ) :
        SCH_TEXT( aGlobalLabel ),
        m_intersheetRefsField( { 0, 0 }, 0, this )
{
    m_intersheetRefsField = aGlobalLabel.m_intersheetRefsField;

    // Re-parent the fields, which before this had aGlobalLabel as parent
    m_intersheetRefsField.SetParent( this );

    m_fieldsAutoplaced = aGlobalLabel.m_fieldsAutoplaced;
}


EDA_ITEM* SCH_GLOBALLABEL::Clone() const
{
    return new SCH_GLOBALLABEL( *this );
}


void SCH_GLOBALLABEL::SwapData( SCH_ITEM* aItem )
{
    SCH_TEXT::SwapData( aItem );

    SCH_GLOBALLABEL* globalLabel = static_cast<SCH_GLOBALLABEL*>( aItem );

    // Swap field data wholesale...
    std::swap( m_intersheetRefsField, globalLabel->m_intersheetRefsField );

    // ...and then reset parent pointers.
    globalLabel->m_intersheetRefsField.SetParent( globalLabel );
    m_intersheetRefsField.SetParent( this );
}


SEARCH_RESULT SCH_GLOBALLABEL::Visit( INSPECTOR aInspector, void* testData,
                                      const KICAD_T aFilterTypes[] )
{
    KICAD_T stype;

    for( const KICAD_T* p = aFilterTypes;  (stype = *p) != EOT;   ++p )
    {
        // If caller wants to inspect my type
        if( stype == SCH_LOCATE_ANY_T || stype == Type() )
        {
            if( SEARCH_RESULT::QUIT == aInspector( this, nullptr ) )
                return SEARCH_RESULT::QUIT;
        }

        if( stype == SCH_LOCATE_ANY_T || stype == SCH_FIELD_T )
        {
            if( SEARCH_RESULT::QUIT == aInspector( GetIntersheetRefs(), this ) )
                return SEARCH_RESULT::QUIT;
        }
    }

    return SEARCH_RESULT::CONTINUE;
}


void SCH_GLOBALLABEL::RunOnChildren( const std::function<void( SCH_ITEM* )>& aFunction )
{
    aFunction( &m_intersheetRefsField );
}


wxPoint 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 PINSHEETLABEL_SHAPE::PS_INPUT:
    case PINSHEETLABEL_SHAPE::PS_BIDI:
    case PINSHEETLABEL_SHAPE::PS_TRISTATE:
        horiz += GetTextHeight() * 3 / 4;  // Use three-quarters-height as proxy for triangle size
        break;

    case PINSHEETLABEL_SHAPE::PS_OUTPUT:
    case PINSHEETLABEL_SHAPE::PS_UNSPECIFIED:
    default:
        break;
    }

    switch( GetLabelSpinStyle() )
    {
    default:
    case LABEL_SPIN_STYLE::LEFT:   return wxPoint( -horiz, vert );
    case LABEL_SPIN_STYLE::UP:     return wxPoint( vert, -horiz );
    case LABEL_SPIN_STYLE::RIGHT:  return wxPoint( horiz, vert );
    case LABEL_SPIN_STYLE::BOTTOM: return wxPoint( vert, horiz );
    }
}


void SCH_GLOBALLABEL::SetLabelSpinStyle( LABEL_SPIN_STYLE aSpinStyle )
{
    m_spin_style = aSpinStyle;

    switch( aSpinStyle )
    {
    default:
        wxASSERT_MSG( 1, wxT( "Bad spin style" ) );
        m_spin_style = LABEL_SPIN_STYLE::RIGHT;
        KI_FALLTHROUGH;

    case LABEL_SPIN_STYLE::RIGHT: // Horiz Normal Orientation
        SetTextAngle( TEXT_ANGLE_HORIZ );
        SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );
        break;

    case LABEL_SPIN_STYLE::UP: // Vert Orientation UP
        SetTextAngle( TEXT_ANGLE_VERT );
        SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );
        break;

    case LABEL_SPIN_STYLE::LEFT: // Horiz Orientation
        SetTextAngle( TEXT_ANGLE_HORIZ );
        SetHorizJustify( GR_TEXT_HJUSTIFY_RIGHT );
        break;

    case LABEL_SPIN_STYLE::BOTTOM: //  Vert Orientation BOTTOM
        SetTextAngle( TEXT_ANGLE_VERT );
        SetHorizJustify( GR_TEXT_HJUSTIFY_RIGHT );
        break;
    }
}


void SCH_GLOBALLABEL::Rotate( const wxPoint& aCenter )
{
    wxPoint pt = GetTextPos();
    RotatePoint( &pt, aCenter, 900 );
    wxPoint offset = pt - GetTextPos();

    Rotate90( false );

    SetTextPos( GetTextPos() + offset );
    m_intersheetRefsField.SetTextPos( m_intersheetRefsField.GetTextPos() + offset );
}


void SCH_GLOBALLABEL::Rotate90( bool aClockwise )
{
    SCH_TEXT::Rotate90( aClockwise );

    if( m_intersheetRefsField.GetTextAngle() == TEXT_ANGLE_VERT
            && m_intersheetRefsField.GetHorizJustify() == GR_TEXT_HJUSTIFY_LEFT )
    {
        if( !aClockwise )
            m_intersheetRefsField.SetHorizJustify( GR_TEXT_HJUSTIFY_RIGHT );

        m_intersheetRefsField.SetTextAngle( TEXT_ANGLE_HORIZ );
    }
    else if( m_intersheetRefsField.GetTextAngle() == TEXT_ANGLE_VERT
                && m_intersheetRefsField.GetHorizJustify() == GR_TEXT_HJUSTIFY_RIGHT )
    {
        if( !aClockwise )
            m_intersheetRefsField.SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );

        m_intersheetRefsField.SetTextAngle( TEXT_ANGLE_HORIZ );
    }
    else if( m_intersheetRefsField.GetTextAngle() == TEXT_ANGLE_HORIZ
                && m_intersheetRefsField.GetHorizJustify() == GR_TEXT_HJUSTIFY_LEFT )
    {
        if( aClockwise )
            m_intersheetRefsField.SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );

        m_intersheetRefsField.SetTextAngle( TEXT_ANGLE_VERT );
    }
    else if( m_intersheetRefsField.GetTextAngle() == TEXT_ANGLE_HORIZ
                && m_intersheetRefsField.GetHorizJustify() == GR_TEXT_HJUSTIFY_RIGHT )
    {
        if( aClockwise )
            m_intersheetRefsField.SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );

        m_intersheetRefsField.SetTextAngle( TEXT_ANGLE_VERT );
    }

    wxPoint pos = m_intersheetRefsField.GetTextPos();
    RotatePoint( &pos, GetPosition(), aClockwise ? -900 : 900 );
    m_intersheetRefsField.SetTextPos( pos );
}


void SCH_GLOBALLABEL::MirrorSpinStyle( bool aLeftRight )
{
    SCH_TEXT::MirrorSpinStyle( aLeftRight );

    if( ( aLeftRight && m_intersheetRefsField.GetTextAngle() == TEXT_ANGLE_HORIZ )
            || ( !aLeftRight && m_intersheetRefsField.GetTextAngle() == TEXT_ANGLE_VERT ) )
    {
        if( m_intersheetRefsField.GetHorizJustify() == GR_TEXT_HJUSTIFY_LEFT )
            m_intersheetRefsField.SetHorizJustify( GR_TEXT_HJUSTIFY_RIGHT );
        else
            m_intersheetRefsField.SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );
    }

    wxPoint pos = m_intersheetRefsField.GetTextPos();
    wxPoint delta = GetPosition() - pos;

    if( aLeftRight )
        pos.x = GetPosition().x + delta.x;
    else
        pos.y = GetPosition().y + delta.y;

    m_intersheetRefsField.SetTextPos( pos );
}


void SCH_GLOBALLABEL::MirrorHorizontally( int aCenter )
{
    wxPoint old_pos = GetPosition();
    SCH_TEXT::MirrorHorizontally( aCenter );

    if( m_intersheetRefsField.GetHorizJustify() == GR_TEXT_HJUSTIFY_LEFT )
       m_intersheetRefsField.SetHorizJustify( GR_TEXT_HJUSTIFY_RIGHT );
    else
       m_intersheetRefsField.SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );

    wxPoint pos = m_intersheetRefsField.GetTextPos();
    wxPoint delta = old_pos - pos;
    pos.x = GetPosition().x + delta.x;

    m_intersheetRefsField.SetPosition( pos );
}


void SCH_GLOBALLABEL::MirrorVertically( int aCenter )
{
    wxPoint old_pos = GetPosition();
    SCH_TEXT::MirrorVertically( aCenter );
    wxPoint pos = m_intersheetRefsField.GetTextPos();
    wxPoint delta = old_pos - pos;
    pos.y = GetPosition().y + delta.y;

    m_intersheetRefsField.SetPosition( pos );
}


void SCH_GLOBALLABEL::UpdateIntersheetRefProps()
{
    m_intersheetRefsField.SetTextSize( GetTextSize() );
    m_intersheetRefsField.SetItalic( IsItalic() );
    m_intersheetRefsField.SetBold( IsBold() );
    m_intersheetRefsField.SetTextThickness( GetTextThickness() );

    if( m_fieldsAutoplaced == FIELDS_AUTOPLACED_AUTO )
        AutoplaceFields( nullptr, false );
}


void SCH_GLOBALLABEL::AutoplaceFields( SCH_SCREEN* aScreen, bool aManual )
{
    int margin = GetTextOffset() * 2;
    int labelLen = GetBoundingBoxBase().GetSizeMax();
    int penOffset = GetPenWidth() / 2;

    // Set both axes to penOffset; we're going to overwrite the text axis below
    wxPoint offset( -penOffset, -penOffset );

    switch( GetLabelSpinStyle() )
    {
    default:
    case LABEL_SPIN_STYLE::LEFT:
        m_intersheetRefsField.SetTextAngle( TEXT_ANGLE_HORIZ );
        m_intersheetRefsField.SetHorizJustify( GR_TEXT_HJUSTIFY_RIGHT );
        offset.x = - ( labelLen + margin / 2 );
        break;

    case LABEL_SPIN_STYLE::UP:
        m_intersheetRefsField.SetTextAngle( TEXT_ANGLE_VERT );
        m_intersheetRefsField.SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );
        offset.y = - ( labelLen + margin / 2 );
        break;

    case LABEL_SPIN_STYLE::RIGHT:
        m_intersheetRefsField.SetTextAngle( TEXT_ANGLE_HORIZ );
        m_intersheetRefsField.SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );
        offset.x = labelLen + margin /2 ;
        break;

    case LABEL_SPIN_STYLE::BOTTOM:
        m_intersheetRefsField.SetTextAngle( TEXT_ANGLE_VERT );
        m_intersheetRefsField.SetHorizJustify( GR_TEXT_HJUSTIFY_RIGHT );
        offset.y = labelLen + margin / 2;
        break;
    }

    m_intersheetRefsField.SetTextPos( GetPosition() + offset );

    m_fieldsAutoplaced = FIELDS_AUTOPLACED_AUTO;
}


bool SCH_GLOBALLABEL::ResolveTextVar( wxString* token, int aDepth ) const
{
    if( token->IsSameAs( wxT( "INTERSHEET_REFS" ) ) && Schematic() )
    {
        SCHEMATIC_SETTINGS& settings = Schematic()->Settings();
        wxString            ref;
        auto                it = Schematic()->GetPageRefsMap().find( GetText() );

        if( it == Schematic()->GetPageRefsMap().end() )
        {
            ref = wxT( "?" );
        }
        else
        {
            std::vector<wxString> pageListCopy;

            pageListCopy.insert( pageListCopy.end(), it->second.begin(), it->second.end() );
            std::sort( pageListCopy.begin(), pageListCopy.end(),
                       []( const wxString& a, const wxString& b ) -> bool
                       {
                           return StrNumCmp( a, b, true ) < 0;
                       } );

            if( !settings.m_IntersheetRefsListOwnPage )
            {
                wxString currentPage = Schematic()->CurrentSheet().GetPageNumber();
                alg::delete_matching( pageListCopy, currentPage );
            }

            if( ( settings.m_IntersheetRefsFormatShort ) && ( pageListCopy.size() > 2 ) )
            {
                ref.Append( wxString::Format( wxT( "%s..%s" ),
                                              pageListCopy.front(),
                                              pageListCopy.back() ) );
            }
            else
            {
                for( const wxString& pageNo : pageListCopy )
                    ref.Append( wxString::Format( wxT( "%s," ), pageNo ) );

                if( !ref.IsEmpty() && ref.Last() == ',' )
                    ref.RemoveLast();
            }
        }

        *token = settings.m_IntersheetRefsPrefix + ref + settings.m_IntersheetRefsSuffix;
        return true;
    }

    return false;
}


void SCH_GLOBALLABEL::Print( const RENDER_SETTINGS* aSettings, const wxPoint& aOffset )
{
    static std::vector<wxPoint> s_poly;

    SCH_CONNECTION* connection = Connection();
    int             layer = ( connection && connection->IsBus() ) ? LAYER_BUS : m_layer;
    wxDC*           DC = aSettings->GetPrintDC();
    COLOR4D         color = aSettings->GetLayerColor( layer );
    int             penWidth = std::max( GetPenWidth(), aSettings->GetDefaultPenWidth() );
    wxPoint         text_offset = aOffset + GetSchematicTextOffset( aSettings );

    EDA_TEXT::Print( aSettings, text_offset, color );

    CreateGraphicShape( aSettings, s_poly, GetTextPos() + aOffset );
    GRPoly( nullptr, DC, s_poly.size(), &s_poly[0], false, penWidth, color, color );

    if( Schematic()->Settings().m_IntersheetRefsShow )
        m_intersheetRefsField.Print( aSettings, aOffset );
}


void SCH_GLOBALLABEL::Plot( PLOTTER* aPlotter ) const
{
    SCH_TEXT::Plot( aPlotter );

    bool show = Schematic()->Settings().m_IntersheetRefsShow;

    if ( show )
        m_intersheetRefsField.Plot( aPlotter );
}


void SCH_GLOBALLABEL::CreateGraphicShape( const RENDER_SETTINGS* aRenderSettings,
                                          std::vector<wxPoint>& aPoints, const wxPoint& Pos ) const
{
    int margin    = GetLabelBoxExpansion( aRenderSettings );
    int halfSize  = ( GetTextHeight() / 2 ) + margin;
    int linewidth = GetPenWidth();
    int symb_len  = LenSize( GetShownText(), linewidth ) + 2 * margin;

    int x = symb_len + linewidth + 3;
    int y = halfSize + linewidth + 3;

    aPoints.clear();

    // Create outline shape : 6 points
    aPoints.emplace_back( wxPoint( 0, 0 ) );
    aPoints.emplace_back( wxPoint( 0, -y ) );     // Up
    aPoints.emplace_back( wxPoint( -x, -y ) );    // left
    aPoints.emplace_back( wxPoint( -x, 0 ) );     // Up left
    aPoints.emplace_back( wxPoint( -x, y ) );     // left down
    aPoints.emplace_back( wxPoint( 0, y ) );      // down

    int x_offset = 0;

    switch( m_shape )
    {
    case PINSHEETLABEL_SHAPE::PS_INPUT:
        x_offset = -halfSize;
        aPoints[0].x += halfSize;
        break;

    case PINSHEETLABEL_SHAPE::PS_OUTPUT:
        aPoints[3].x -= halfSize;
        break;

    case PINSHEETLABEL_SHAPE::PS_BIDI:
    case PINSHEETLABEL_SHAPE::PS_TRISTATE:
        x_offset = -halfSize;
        aPoints[0].x += halfSize;
        aPoints[3].x -= halfSize;
        break;

    case PINSHEETLABEL_SHAPE::PS_UNSPECIFIED:
    default:
        break;
    }

    int angle = 0;

    switch( GetLabelSpinStyle() )
    {
    default:
    case LABEL_SPIN_STYLE::LEFT:                 break;
    case LABEL_SPIN_STYLE::UP:     angle = -900; break;
    case LABEL_SPIN_STYLE::RIGHT:  angle = 1800; break;
    case LABEL_SPIN_STYLE::BOTTOM: angle = 900;  break;
    }

    // Rotate outlines and move corners in real position
    for( wxPoint& aPoint : aPoints )
    {
        aPoint.x += x_offset;

        if( angle )
            RotatePoint( &aPoint, angle );

        aPoint += Pos;
    }

    aPoints.push_back( aPoints[0] ); // closing
}


const EDA_RECT SCH_GLOBALLABEL::GetBoundingBoxBase() const
{
    // build the bounding box on the global label only, without taking in account
    // the intersheets references, just the bounding box of the graphic shape
    int x  = GetTextPos().x;
    int y  = GetTextPos().y;
    int penWidth = GetEffectiveTextPenWidth();
    int margin = GetTextOffset();
    int height   = ( ( GetTextHeight() * 15 ) / 10 ) + penWidth + margin;
    int length = LenSize( GetShownText(), penWidth )
                 + height                 // add height for triangular shapes
                 - margin;                // margin added to height not needed here

    int dx, dy;

    switch( GetLabelSpinStyle() )    // respect orientation
    {
    default:
    case LABEL_SPIN_STYLE::LEFT:
        dx = -length;
        dy = height;
        y -= height / 2;
        break;

    case LABEL_SPIN_STYLE::UP:
        dx = height;
        dy = -length;
        x -= height / 2;
        break;

    case LABEL_SPIN_STYLE::RIGHT:
        dx = length;
        dy = height;
        y -= height / 2;
        break;

    case LABEL_SPIN_STYLE::BOTTOM:
        dx = height;
        dy = length;
        x -= height / 2;
        break;
    }

    EDA_RECT box( wxPoint( x, y ), wxSize( dx, dy ) );

    box.Normalize();
    return box;
}


const EDA_RECT SCH_GLOBALLABEL::GetBoundingBox() const
{
    // build the bounding box on the global label only, including the intersheets references
    // full bounding box if they are shown

    EDA_RECT box( GetBoundingBoxBase() );

    // Note: Schematic() can be null in preference preview panel
    if( Schematic() && Schematic()->Settings().m_IntersheetRefsShow )
    {
        box.Merge( m_intersheetRefsField.GetBoundingBox() );
        box.Normalize();
    }

    return box;
}


wxString SCH_GLOBALLABEL::GetSelectMenuText( EDA_UNITS aUnits ) const
{
    return wxString::Format( _( "Global Label '%s'" ), ShortenedShownText() );
}


BITMAPS SCH_GLOBALLABEL::GetMenuImage() const
{
    return BITMAPS::add_glabel;
}


bool SCH_GLOBALLABEL::HitTest( const wxPoint& aPosition, int aAccuracy ) const
{
    EDA_RECT bbox = GetBoundingBoxBase();
    bbox.Inflate( aAccuracy );

    if( !bbox.Contains( aPosition ) )
    {
        if( Schematic() && Schematic()->Settings().m_IntersheetRefsShow )
        {
            bbox = m_intersheetRefsField.GetBoundingBox();
            bbox.Inflate( aAccuracy );

            return bbox.Contains( aPosition );
        }

        return false;
    }

    return true;
}


bool SCH_GLOBALLABEL::HitTest( const EDA_RECT& aRect, bool aContained, int aAccuracy ) const
{
    EDA_RECT bbox = GetBoundingBoxBase();

    if( aContained )
    {
        if( Schematic() && Schematic()->Settings().m_IntersheetRefsShow )
            bbox.Merge( m_intersheetRefsField.GetBoundingBox() );

        bbox.Inflate( aAccuracy );
        return aRect.Contains( bbox );
    }

    bbox.Inflate( aAccuracy );

    if( aRect.Intersects( bbox ) )
        return true;

    if( Schematic() && Schematic()->Settings().m_IntersheetRefsShow )
    {
        bbox = m_intersheetRefsField.GetBoundingBox();
        bbox.Inflate( aAccuracy );

        return aRect.Intersects( bbox );
    }

    return false;
}


SCH_HIERLABEL::SCH_HIERLABEL( const wxPoint& pos, const wxString& text, KICAD_T aType )
        : SCH_TEXT( pos, text, aType )
{
    m_layer      = LAYER_HIERLABEL;
    m_shape      = PINSHEETLABEL_SHAPE::PS_INPUT;
    m_isDangling = true;
    SetMultilineAllowed( false );
}


EDA_ITEM* SCH_HIERLABEL::Clone() const
{
    return new SCH_HIERLABEL( *this );
}


void SCH_HIERLABEL::SetLabelSpinStyle( LABEL_SPIN_STYLE aSpinStyle )
{
    m_spin_style = aSpinStyle;

    // Assume "Right" and Left" mean which side of the port symbol the text will be on
    // If we are left of the symbol, we want to right justify to line up with the symbol
    switch( aSpinStyle )
    {
    default:
        wxLogWarning( wxT( "SetLabelSpinStyle bad spin style" ) );
        break;

    case LABEL_SPIN_STYLE::LEFT:
        //
        m_spin_style = LABEL_SPIN_STYLE::LEFT; // Handle the error spin style by resetting
        SetTextAngle( TEXT_ANGLE_HORIZ );
        SetHorizJustify( GR_TEXT_HJUSTIFY_RIGHT );
        SetVertJustify( GR_TEXT_VJUSTIFY_CENTER );
        break;

    case LABEL_SPIN_STYLE::UP:
        SetTextAngle( TEXT_ANGLE_VERT );
        SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );
        SetVertJustify( GR_TEXT_VJUSTIFY_CENTER );
        break;

    case LABEL_SPIN_STYLE::RIGHT:
        SetTextAngle( TEXT_ANGLE_HORIZ );
        SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );
        SetVertJustify( GR_TEXT_VJUSTIFY_CENTER );
        break;

    case LABEL_SPIN_STYLE::BOTTOM:
        SetTextAngle( TEXT_ANGLE_VERT );
        SetHorizJustify( GR_TEXT_HJUSTIFY_RIGHT );
        SetVertJustify( GR_TEXT_VJUSTIFY_CENTER );
        break;
    }
}


void SCH_HIERLABEL::Print( const RENDER_SETTINGS* aSettings, const wxPoint& offset )
{
    wxCHECK_RET( Schematic(), wxT( "No parent SCHEMATIC set for SCH_LABEL!" ) );

    static std::vector <wxPoint> Poly;

    wxDC*           DC = aSettings->GetPrintDC();
    SCH_CONNECTION* conn = Connection();
    bool            isBus = conn && conn->IsBus();
    COLOR4D         color = aSettings->GetLayerColor( isBus ? LAYER_BUS : m_layer );
    int             penWidth = std::max( GetPenWidth(), aSettings->GetDefaultPenWidth() );
    wxPoint         textOffset = offset + GetSchematicTextOffset( aSettings );

    EDA_TEXT::Print( aSettings, textOffset, color );

    CreateGraphicShape( aSettings, Poly, GetTextPos() + offset );
    GRPoly( nullptr, DC, Poly.size(), &Poly[0], false, penWidth, color, color );
}


void SCH_HIERLABEL::CreateGraphicShape( const RENDER_SETTINGS* aSettings,
                                        std::vector<wxPoint>& aPoints, const wxPoint& aPos ) const
{
    CreateGraphicShape( aSettings, aPoints, aPos, m_shape );
}


void SCH_HIERLABEL::CreateGraphicShape( const RENDER_SETTINGS* aSettings,
                                        std::vector<wxPoint>& aPoints, const wxPoint& aPos,
                                        PINSHEETLABEL_SHAPE aShape ) const
{
    int* Template = TemplateShape[static_cast<int>( aShape )][static_cast<int>( m_spin_style )];
    int  halfSize = GetTextHeight() / 2;
    int  imax = *Template;
    Template++;

    aPoints.clear();

    for( int ii = 0; ii < imax; ii++ )
    {
        wxPoint corner;
        corner.x = ( halfSize * (*Template) ) + aPos.x;
        Template++;

        corner.y = ( halfSize * (*Template) ) + aPos.y;
        Template++;

        aPoints.push_back( corner );
    }
}


const EDA_RECT SCH_HIERLABEL::GetBoundingBox() const
{
    int penWidth = GetEffectiveTextPenWidth();
    int margin = GetTextOffset();

    int x  = GetTextPos().x;
    int y  = GetTextPos().y;

    int height = GetTextHeight() + penWidth + margin;
    int length = LenSize( GetShownText(), penWidth )
                 + height;                // add height for triangular shapes

    int dx, dy;

    switch( GetLabelSpinStyle() )
    {
    default:
    case LABEL_SPIN_STYLE::LEFT:
        dx = -length;
        dy = height;
        x += Mils2iu( DANGLING_SYMBOL_SIZE );
        y -= height / 2;
        break;

    case LABEL_SPIN_STYLE::UP:
        dx = height;
        dy = -length;
        x -= height / 2;
        y += Mils2iu( DANGLING_SYMBOL_SIZE );
        break;

    case LABEL_SPIN_STYLE::RIGHT:
        dx = length;
        dy = height;
        x -= Mils2iu( DANGLING_SYMBOL_SIZE );
        y -= height / 2;
        break;

    case LABEL_SPIN_STYLE::BOTTOM:
        dx = height;
        dy = length;
        x -= height / 2;
        y -= Mils2iu( DANGLING_SYMBOL_SIZE );
        break;
    }

    EDA_RECT box( wxPoint( x, y ), wxSize( dx, dy ) );
    box.Normalize();
    return box;
}


wxPoint SCH_HIERLABEL::GetSchematicTextOffset( const RENDER_SETTINGS* aSettings ) const
{
    wxPoint text_offset;
    int     dist = GetTextOffset( aSettings );

    dist += GetTextWidth();

    switch( GetLabelSpinStyle() )
    {
    default:
    case LABEL_SPIN_STYLE::LEFT:   text_offset.x = -dist; break; // Orientation horiz normale
    case LABEL_SPIN_STYLE::UP:     text_offset.y = -dist; break; // Orientation vert UP
    case LABEL_SPIN_STYLE::RIGHT:  text_offset.x = dist;  break; // Orientation horiz inverse
    case LABEL_SPIN_STYLE::BOTTOM: text_offset.y = dist;  break; // Orientation vert BOTTOM
    }

    return text_offset;
}


wxString SCH_HIERLABEL::GetSelectMenuText( EDA_UNITS aUnits ) const
{
    return wxString::Format( _( "Hierarchical Label '%s'" ), ShortenedShownText() );
}


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( nullptr, _( "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;
}
