kicad/eeschema/sch_textbox.cpp

/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2022-2023 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

#include <base_units.h>
#include <pgm_base.h>
#include <sch_edit_frame.h>
#include <plotters/plotter.h>
#include <widgets/msgpanel.h>
#include <bitmaps.h>
#include <string_utils.h>
#include <schematic.h>
#include <settings/color_settings.h>
#include <sch_painter.h>
#include <wx/log.h>
#include <dialogs/html_message_box.h>
#include <project/project_file.h>
#include <trigo.h>
#include <sch_textbox.h>
#include <tools/sch_navigate_tool.h>


SCH_TEXTBOX::SCH_TEXTBOX( SCH_LAYER_ID aLayer, int aLineWidth, FILL_T aFillType,
                          const wxString& aText, KICAD_T aType ) :
        SCH_SHAPE( SHAPE_T::RECTANGLE, aLayer, aLineWidth, aFillType, aType ),
        EDA_TEXT( schIUScale, aText )
{
    m_layer = aLayer;

    SetHorizJustify( GR_TEXT_H_ALIGN_LEFT );
    SetVertJustify( GR_TEXT_V_ALIGN_TOP );
    SetMultilineAllowed( true );

    m_excludedFromSim = false;

    int defaultMargin = GetLegacyTextMargin();
    m_marginLeft = defaultMargin;
    m_marginTop = defaultMargin;
    m_marginRight = defaultMargin;
    m_marginBottom = defaultMargin;
}


SCH_TEXTBOX::SCH_TEXTBOX( const SCH_TEXTBOX& aText ) :
        SCH_SHAPE( aText ),
        EDA_TEXT( aText )
{
    m_excludedFromSim = aText.m_excludedFromSim;
    m_marginLeft = aText.m_marginLeft;
    m_marginTop = aText.m_marginTop;
    m_marginRight = aText.m_marginRight;
    m_marginBottom = aText.m_marginBottom;
}


int SCH_TEXTBOX::GetLegacyTextMargin() const
{
    if( m_layer == LAYER_DEVICE )
        return KiROUND( GetTextSize().y * 0.8 );
    else
        return KiROUND( GetStroke().GetWidth() / 2.0 ) + KiROUND( GetTextSize().y * 0.75 );
}


void SCH_TEXTBOX::MirrorHorizontally( int aCenter )
{
    // Text is NOT really mirrored; it just has its justification flipped
    if( GetTextAngle() == ANGLE_HORIZONTAL )
    {
        if( GetHorizJustify() == GR_TEXT_H_ALIGN_LEFT )
            SetHorizJustify( GR_TEXT_H_ALIGN_RIGHT );
        else if( GetHorizJustify() == GR_TEXT_H_ALIGN_RIGHT )
            SetHorizJustify( GR_TEXT_H_ALIGN_LEFT );
    }
}


void SCH_TEXTBOX::MirrorVertically( int aCenter )
{
    // Text is NOT really mirrored; it just has its justification flipped
    if( GetTextAngle() == ANGLE_VERTICAL )
    {
        if( GetHorizJustify() == GR_TEXT_H_ALIGN_LEFT )
            SetHorizJustify( GR_TEXT_H_ALIGN_RIGHT );
        else if( GetHorizJustify() == GR_TEXT_H_ALIGN_RIGHT )
            SetHorizJustify( GR_TEXT_H_ALIGN_LEFT );
    }
}


void SCH_TEXTBOX::Rotate( const VECTOR2I& aCenter, bool aRotateCCW )
{
    SCH_SHAPE::Rotate( aCenter, aRotateCCW );
    SetTextAngle( GetTextAngle() == ANGLE_VERTICAL ? ANGLE_HORIZONTAL : ANGLE_VERTICAL );
}


void SCH_TEXTBOX::Rotate90( bool aClockwise )
{
    SetTextAngle( GetTextAngle() == ANGLE_VERTICAL ? ANGLE_HORIZONTAL : ANGLE_VERTICAL );
}


VECTOR2I SCH_TEXTBOX::GetDrawPos() const
{
    BOX2I bbox;

    if( m_layer == LAYER_DEVICE )   // TODO: nuke symbol editor's upside-down coordinate system
    {
        bbox = BOX2I( VECTOR2I( std::min( m_start.x, m_end.x ), std::min( -m_start.y, -m_end.y ) ),
                      VECTOR2I( abs( m_end.x - m_start.x ), abs( m_end.y - m_start.y ) ) );
    }
    else
    {
        bbox = BOX2I( m_start, m_end - m_start );

        bbox.Normalize();
    }

    VECTOR2I pos( bbox.GetLeft() + m_marginLeft, bbox.GetBottom() - m_marginBottom );

    if( GetTextAngle().IsVertical() )
    {
        switch( GetHorizJustify() )
        {
        case GR_TEXT_H_ALIGN_LEFT:
            pos.y = bbox.GetBottom() - m_marginBottom;
            break;
        case GR_TEXT_H_ALIGN_CENTER:
            pos.y = ( bbox.GetTop() + bbox.GetBottom() ) / 2;
            break;
        case GR_TEXT_H_ALIGN_RIGHT:
            pos.y = bbox.GetTop() + m_marginTop;
            break;
        case GR_TEXT_H_ALIGN_INDETERMINATE:
            wxFAIL_MSG( wxT( "Indeterminate state legal only in dialogs." ) );
            break;
        }

        switch( GetVertJustify() )
        {
        case GR_TEXT_V_ALIGN_TOP:
            pos.x = bbox.GetLeft() + m_marginLeft;
            break;
        case GR_TEXT_V_ALIGN_CENTER:
            pos.x = ( bbox.GetLeft() + bbox.GetRight() ) / 2;
            break;
        case GR_TEXT_V_ALIGN_BOTTOM:
            pos.x = bbox.GetRight() - m_marginRight;
            break;
        case GR_TEXT_V_ALIGN_INDETERMINATE:
            wxFAIL_MSG( wxT( "Indeterminate state legal only in dialogs." ) );
            break;
        }
    }
    else
    {
        switch( GetHorizJustify() )
        {
        case GR_TEXT_H_ALIGN_LEFT:
            pos.x = bbox.GetLeft() + m_marginLeft;
            break;
        case GR_TEXT_H_ALIGN_CENTER:
            pos.x = ( bbox.GetLeft() + bbox.GetRight() ) / 2;
            break;
        case GR_TEXT_H_ALIGN_RIGHT:
            pos.x = bbox.GetRight() - m_marginRight;
            break;
        case GR_TEXT_H_ALIGN_INDETERMINATE:
            wxFAIL_MSG( wxT( "Indeterminate state legal only in dialogs." ) );
            break;
        }

        switch( GetVertJustify() )
        {
        case GR_TEXT_V_ALIGN_TOP:
            pos.y = bbox.GetTop() + m_marginTop;
            break;
        case GR_TEXT_V_ALIGN_CENTER:
            pos.y = ( bbox.GetTop() + bbox.GetBottom() ) / 2;
            break;
        case GR_TEXT_V_ALIGN_BOTTOM:
            pos.y = bbox.GetBottom() - m_marginBottom;
            break;
        case GR_TEXT_V_ALIGN_INDETERMINATE:
            wxFAIL_MSG( wxT( "Indeterminate state legal only in dialogs." ) );
            break;
        }
    }

    return pos;
}


void SCH_TEXTBOX::SwapData( SCH_ITEM* aItem )
{
    SCH_SHAPE::SwapData( aItem );

    SCH_TEXTBOX* item = static_cast<SCH_TEXTBOX*>( aItem );

    std::swap( m_layer, item->m_layer );
    std::swap( m_marginLeft, item->m_marginLeft );
    std::swap( m_marginTop, item->m_marginTop );
    std::swap( m_marginRight, item->m_marginRight );
    std::swap( m_marginBottom, item->m_marginBottom );

    SwapText( *item );
    SwapAttributes( *item );
}


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

    auto other = static_cast<const SCH_TEXTBOX*>( &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;

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

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

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

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

    if( GetExcludedFromSim() != other->GetExcludedFromSim() )
        return GetExcludedFromSim() - other->GetExcludedFromSim();

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


KIFONT::FONT* SCH_TEXTBOX::getDrawFont() const
{
    KIFONT::FONT* font = EDA_TEXT::GetFont();

    if( !font )
        font = KIFONT::FONT::GetFont( GetDefaultFont(), IsBold(), IsItalic() );

    return font;
}


void SCH_TEXTBOX::Print( const SCH_RENDER_SETTINGS* aSettings, int aUnit, int aBodyStyle,
                         const VECTOR2I& aOffset, bool aForceNoFill, bool aDimmed )
{
    if( IsPrivate() )
        return;

    wxDC*      DC = aSettings->GetPrintDC();
    int        penWidth = GetEffectivePenWidth( aSettings );
    bool       blackAndWhiteMode = GetGRForceBlackPenState();
    VECTOR2I   pt1 = GetStart();
    VECTOR2I   pt2 = GetEnd();
    COLOR4D    color = GetStroke().GetColor();
    COLOR4D    bg = aSettings->GetBackgroundColor();
    LINE_STYLE lineStyle = GetStroke().GetLineStyle();

    if( bg == COLOR4D::UNSPECIFIED || GetGRForceBlackPenState() )
        bg = COLOR4D::WHITE;

    if( GetFillMode() == FILL_T::FILLED_WITH_COLOR && !blackAndWhiteMode && !aForceNoFill )
        GRFilledRect( DC, pt1, pt2, 0, GetFillColor(), GetFillColor() );

    if( penWidth > 0 )
    {
        penWidth = std::max( penWidth, aSettings->GetMinPenWidth() );

        if( blackAndWhiteMode || color == COLOR4D::UNSPECIFIED )
            color = aSettings->GetLayerColor( m_layer );

        if( aDimmed )
        {
            color.Desaturate( );
            color = color.Mix( bg, 0.5f );
        }

        if( lineStyle == LINE_STYLE::DEFAULT )
            lineStyle = LINE_STYLE::SOLID;

        if( lineStyle == LINE_STYLE::SOLID )
        {
            GRRect( DC, pt1, pt2, penWidth, color );
        }
        else
        {
            std::vector<SHAPE*> shapes = MakeEffectiveShapes( true );

            for( SHAPE* shape : shapes )
            {
                STROKE_PARAMS::Stroke( shape, lineStyle, penWidth, aSettings,
                        [&]( const VECTOR2I& a, const VECTOR2I& b )
                        {
                            if( m_layer == LAYER_DEVICE )
                            {
                                VECTOR2I ptA = aSettings->TransformCoordinate( a ) + aOffset;
                                VECTOR2I ptB = aSettings->TransformCoordinate( b ) + aOffset;
                                GRLine( DC, ptA.x, ptA.y, ptB.x, ptB.y, penWidth, color );
                            }
                            else
                            {
                                GRLine( DC, a.x, a.y, b.x, b.y, penWidth, color );
                            }
                        } );
            }

            for( SHAPE* shape : shapes )
                delete shape;
        }
    }

    color = GetTextColor();

    if( blackAndWhiteMode || color == COLOR4D::UNSPECIFIED )
        color = aSettings->GetLayerColor( m_layer );

    if( aDimmed )
    {
        color.Desaturate( );
        color = color.Mix( bg, 0.5f );
    }

    if( m_layer == LAYER_DEVICE )
    {
        SCH_TEXTBOX temp( *this );

        if( aSettings->m_Transform.y1 )
        {
            temp.SetTextAngle( temp.GetTextAngle() == ANGLE_HORIZONTAL ? ANGLE_VERTICAL
                                                                       : ANGLE_HORIZONTAL );
        }

        // NB: GetDrawPos() will want Symbol Editor (upside-down) coordinates
        temp.SetStart( VECTOR2I( pt1.x, -pt1.y ) );
        temp.SetEnd( VECTOR2I( pt2.x, -pt2.y ) );

        GRPrintText( DC, temp.GetDrawPos(), color, temp.GetShownText( true ), temp.GetTextAngle(),
                     temp.GetTextSize(), temp.GetHorizJustify(), temp.GetVertJustify(), penWidth,
                     temp.IsItalic(), temp.IsBold(), getDrawFont(), GetFontMetrics() );
    }
    else
    {
        EDA_TEXT::Print( aSettings, aOffset, color );
    }
}


wxString SCH_TEXTBOX::GetShownText( const SCH_SHEET_PATH* aPath, bool aAllowExtraText,
                                    int aDepth ) const
{
    SCH_SHEET* sheet = nullptr;

    if( aPath )
        sheet = aPath->Last();

    std::function<bool( wxString* )> textResolver =
            [&]( wxString* token ) -> bool
            {
                if( sheet )
                {
                    if( sheet->ResolveTextVar( aPath, token, aDepth + 1 ) )
                        return true;
                }

                return false;
            };

    wxString text = EDA_TEXT::GetShownText( aAllowExtraText, aDepth );

    if( HasTextVars() )
    {
        if( aDepth < 10 )
            text = ExpandTextVars( text, &textResolver );
    }

    VECTOR2I size = GetEnd() - GetStart();
    int      colWidth;

    if( GetTextAngle().IsVertical() )
        colWidth = abs( size.y ) - ( GetMarginTop() + GetMarginBottom() );
    else
        colWidth = abs( size.x ) - ( GetMarginLeft() + GetMarginRight() );

    getDrawFont()->LinebreakText( text, colWidth, GetTextSize(), GetTextThickness(), IsBold(),
                                  IsItalic() );

    return text;
}


bool SCH_TEXTBOX::HitTest( const VECTOR2I& aPosition, int aAccuracy ) const
{
    BOX2I rect = GetBoundingBox();

    rect.Inflate( aAccuracy );

    return rect.Contains( aPosition );
}


bool SCH_TEXTBOX::HitTest( const BOX2I& aRect, bool aContained, int aAccuracy ) const
{
    BOX2I rect = aRect;

    rect.Inflate( aAccuracy );

    if( aContained )
        return rect.Contains( GetBoundingBox() );

    return rect.Intersects( GetBoundingBox() );
}


void SCH_TEXTBOX::DoHypertextAction( EDA_DRAW_FRAME* aFrame ) const
{
    wxCHECK_MSG( IsHypertext(), /* void */,
                 wxT( "Calling a hypertext menu on a SCH_TEXTBOX with no hyperlink?" ) );

    SCH_NAVIGATE_TOOL* navTool = aFrame->GetToolManager()->GetTool<SCH_NAVIGATE_TOOL>();
    navTool->HypertextCommand( m_hyperlink );
}


wxString SCH_TEXTBOX::GetItemDescription( UNITS_PROVIDER* aUnitsProvider ) const
{
    return wxString::Format( _( "Text Box" ) );
}


BITMAPS SCH_TEXTBOX::GetMenuImage() const
{
    return BITMAPS::add_textbox;
}


void SCH_TEXTBOX::Plot( PLOTTER* aPlotter, bool aBackground, const SCH_PLOT_OPTS& aPlotOpts,
                        int aUnit, int aBodyStyle, const VECTOR2I& aOffset, bool aDimmed )
{
    if( IsPrivate() )
        return;

    if( aBackground )
    {
        SCH_SHAPE::Plot( aPlotter, aBackground, aPlotOpts, aUnit, aBodyStyle, aOffset, aDimmed );
        return;
    }

    SCH_SHEET_PATH*      sheet = Schematic() ? &Schematic()->CurrentSheet() : nullptr;
    SCH_RENDER_SETTINGS* renderSettings = getRenderSettings( aPlotter );
    int                  penWidth = GetEffectivePenWidth( renderSettings );
    COLOR4D              color = GetStroke().GetColor();
    COLOR4D              bg = renderSettings->GetBackgroundColor();
    LINE_STYLE           lineStyle = GetStroke().GetLineStyle();

    if( penWidth > 0 )
    {
        if( !aPlotter->GetColorMode() || color == COLOR4D::UNSPECIFIED )
            color = renderSettings->GetLayerColor( m_layer );

        if( aDimmed )
        {
            color.Desaturate( );
            color = color.Mix( bg, 0.5f );
        }

        if( lineStyle == LINE_STYLE::DEFAULT )
            lineStyle = LINE_STYLE::SOLID;

        aPlotter->SetColor( color );
        aPlotter->SetDash( penWidth, lineStyle );
        aPlotter->Rect( m_start, m_end, FILL_T::NO_FILL, penWidth );
        aPlotter->SetDash( penWidth, LINE_STYLE::SOLID );
    }

    KIFONT::FONT* font = getDrawFont();

    color = GetTextColor();

    if( !aPlotter->GetColorMode() || color == COLOR4D::UNSPECIFIED )
        color = renderSettings->GetLayerColor( m_layer );

    if( bg == COLOR4D::UNSPECIFIED || !aPlotter->GetColorMode() )
        bg = COLOR4D::WHITE;

    if( aDimmed )
    {
        color.Desaturate( );
        color = color.Mix( bg, 0.5f );
    }

    penWidth = GetEffectiveTextPenWidth( renderSettings->GetDefaultPenWidth() );
    penWidth = std::max( penWidth, renderSettings->GetMinPenWidth() );
    aPlotter->SetCurrentLineWidth( penWidth );

    std::vector<VECTOR2I> positions;
    wxArrayString strings_list;
    wxStringSplit( GetShownText( sheet, true ), strings_list, '\n' );
    positions.reserve( strings_list.Count() );

    if( m_layer == LAYER_DEVICE )
    {
        VECTOR2I    start = renderSettings->TransformCoordinate( m_start ) + aOffset;
        VECTOR2I    end = renderSettings->TransformCoordinate( m_end ) + aOffset;
        SCH_TEXTBOX temp( *this );

        if( renderSettings->m_Transform.y1 )
        {
            temp.SetTextAngle( temp.GetTextAngle() == ANGLE_HORIZONTAL ? ANGLE_VERTICAL
                                                                       : ANGLE_HORIZONTAL );
        }

        // NB: GetDrawPos() will want Symbol Editor (upside-down) coordinates
        temp.SetStart( VECTOR2I( start.x, -start.y ) );
        temp.SetEnd( VECTOR2I( end.x, -end.y ) );
        temp.GetLinePositions( positions, (int) strings_list.Count() );
    }
    else
    {
        GetLinePositions( positions, (int) strings_list.Count() );
    }

    TEXT_ATTRIBUTES attrs = GetAttributes();
    attrs.m_StrokeWidth = penWidth;
    attrs.m_Multiline = false;

    for( unsigned ii = 0; ii < strings_list.Count(); ii++ )
    {
        aPlotter->PlotText( positions[ii], color, strings_list.Item( ii ), attrs, font,
                            GetFontMetrics() );
    }

    if( HasHyperlink() )
        aPlotter->HyperlinkBox( GetBoundingBox(), GetHyperlink() );
}


void SCH_TEXTBOX::GetMsgPanelInfo( EDA_DRAW_FRAME* aFrame, std::vector<MSG_PANEL_ITEM>& aList )
{
    // Don't use GetShownText() here; we want to show the user the variable references
    aList.emplace_back( _( "Text Box" ), KIUI::EllipsizeStatusText( aFrame, GetText() ) );

    if( m_excludedFromSim )
        aList.emplace_back( _( "Exclude from" ), _( "Simulation" ) );

    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() ) );

    aList.emplace_back( _( "Box Width" ),
                        aFrame->MessageTextFromValue( std::abs( GetEnd().x - GetStart().x ) ) );

    aList.emplace_back( _( "Box Height" ),
                        aFrame->MessageTextFromValue( std::abs( GetEnd().y - GetStart().y ) ) );

    m_stroke.GetMsgPanelInfo( aFrame, aList );
}


bool SCH_TEXTBOX::operator==( const SCH_ITEM& aOther ) const
{
    if( Type() != aOther.Type() )
        return false;

    const SCH_TEXTBOX& other = static_cast<const SCH_TEXTBOX&>( aOther );

    if( m_excludedFromSim != other.m_excludedFromSim )
        return false;

    if( GetMarginLeft() != other.GetMarginLeft() )
        return false;

    if( GetMarginTop() != other.GetMarginTop() )
        return false;

    if( GetMarginRight() != other.GetMarginRight() )
        return false;

    if( GetMarginBottom() != other.GetMarginBottom() )
        return false;

    return SCH_SHAPE::operator==( aOther ) && EDA_TEXT::operator==( other );
}


double SCH_TEXTBOX::Similarity( const SCH_ITEM& aOther ) const
{
    if( m_Uuid == aOther.m_Uuid )
        return 1.0;

    if( aOther.Type() != Type() )
        return 0.0;

    auto other = static_cast<const SCH_TEXTBOX&>( aOther );

    double similarity = SimilarityBase( other );

    if( m_excludedFromSim != other.m_excludedFromSim )
        similarity *= 0.9;

    if( GetMarginLeft() != other.GetMarginLeft() )
        similarity *= 0.9;

    if( GetMarginTop() != other.GetMarginTop() )
        similarity *= 0.9;

    if( GetMarginRight() != other.GetMarginRight() )
        similarity *= 0.9;

    if( GetMarginBottom() != other.GetMarginBottom() )
        similarity *= 0.9;

    similarity *= SCH_SHAPE::Similarity( aOther );
    similarity *= EDA_TEXT::Similarity( other );

    return similarity;
}


int SCH_TEXTBOX::compare( const SCH_ITEM& aOther, int aCompareFlags ) const
{
    wxASSERT( aOther.Type() == SCH_TEXTBOX_T );

    int retv = SCH_SHAPE::compare( aOther, aCompareFlags );

    if( retv )
        return retv;

    const SCH_TEXTBOX* tmp = static_cast<const SCH_TEXTBOX*>( &aOther );

    int result = GetText().CmpNoCase( tmp->GetText() );

    if( result != 0 )
        return result;

    if( GetTextWidth() != tmp->GetTextWidth() )
        return GetTextWidth() - tmp->GetTextWidth();

    if( GetTextHeight() != tmp->GetTextHeight() )
        return GetTextHeight() - tmp->GetTextHeight();

    if( IsBold() != tmp->IsBold() )
        return IsBold() - tmp->IsBold();

    if( IsItalic() != tmp->IsItalic() )
        return IsItalic() - tmp->IsItalic();

    if( GetHorizJustify() != tmp->GetHorizJustify() )
        return GetHorizJustify() - tmp->GetHorizJustify();

    if( GetTextAngle().AsTenthsOfADegree() != tmp->GetTextAngle().AsTenthsOfADegree() )
        return GetTextAngle().AsTenthsOfADegree() - tmp->GetTextAngle().AsTenthsOfADegree();

    if( GetMarginLeft() != tmp->GetMarginLeft() )
        return GetMarginLeft() - tmp->GetMarginLeft();

    if( GetMarginTop() != tmp->GetMarginTop() )
        return GetMarginTop() - tmp->GetMarginTop();

    if( GetMarginRight() != tmp->GetMarginRight() )
        return GetMarginRight() - tmp->GetMarginRight();

    if( GetMarginBottom() != tmp->GetMarginBottom() )
        return GetMarginBottom() - tmp->GetMarginBottom();

    return 0;
}


static struct SCH_TEXTBOX_DESC
{
    SCH_TEXTBOX_DESC()
    {
        PROPERTY_MANAGER& propMgr = PROPERTY_MANAGER::Instance();
        REGISTER_TYPE( SCH_TEXTBOX );

        propMgr.AddTypeCast( new TYPE_CAST<SCH_TEXTBOX, SCH_SHAPE> );
        propMgr.AddTypeCast( new TYPE_CAST<SCH_TEXTBOX, EDA_SHAPE> );
        propMgr.AddTypeCast( new TYPE_CAST<SCH_TEXTBOX, EDA_TEXT> );
        propMgr.InheritsAfter( TYPE_HASH( SCH_TEXTBOX ), TYPE_HASH( SCH_SHAPE ) );
        propMgr.InheritsAfter( TYPE_HASH( SCH_TEXTBOX ), TYPE_HASH( EDA_SHAPE ) );
        propMgr.InheritsAfter( TYPE_HASH( SCH_TEXTBOX ), TYPE_HASH( EDA_TEXT ) );

        propMgr.Mask( TYPE_HASH( SCH_TEXTBOX ), TYPE_HASH( EDA_SHAPE ), _HKI( "Shape" ) );

        propMgr.Mask( TYPE_HASH( SCH_TEXTBOX ), TYPE_HASH( EDA_TEXT ), _HKI( "Visible" ) );
        propMgr.Mask( TYPE_HASH( SCH_TEXTBOX ), TYPE_HASH( EDA_TEXT ), _HKI( "Width" ) );
        propMgr.Mask( TYPE_HASH( SCH_TEXTBOX ), TYPE_HASH( EDA_TEXT ), _HKI( "Height" ) );
        propMgr.Mask( TYPE_HASH( SCH_TEXTBOX ), TYPE_HASH( EDA_TEXT ), _HKI( "Thickness" ) );

        const wxString marginProps = _( "Margins" );

        propMgr.AddProperty( new PROPERTY<SCH_TEXTBOX, int>( _HKI( "Margin Left" ),
                    &SCH_TEXTBOX::SetMarginLeft, &SCH_TEXTBOX::GetMarginLeft,
                    PROPERTY_DISPLAY::PT_SIZE ),
                marginProps );
        propMgr.AddProperty( new PROPERTY<SCH_TEXTBOX, int>( _HKI( "Margin Top" ),
                    &SCH_TEXTBOX::SetMarginTop, &SCH_TEXTBOX::GetMarginTop,
                    PROPERTY_DISPLAY::PT_SIZE ),
                marginProps );
        propMgr.AddProperty( new PROPERTY<SCH_TEXTBOX, int>( _HKI( "Margin Right" ),
                    &SCH_TEXTBOX::SetMarginRight, &SCH_TEXTBOX::GetMarginRight,
                    PROPERTY_DISPLAY::PT_SIZE ),
                marginProps );
        propMgr.AddProperty( new PROPERTY<SCH_TEXTBOX, int>( _HKI( "Margin Bottom" ),
                    &SCH_TEXTBOX::SetMarginBottom, &SCH_TEXTBOX::GetMarginBottom,
                    PROPERTY_DISPLAY::PT_SIZE ),
                 marginProps );

        propMgr.AddProperty( new PROPERTY<SCH_TEXTBOX, int>( _HKI( "Text Size" ),
                    &SCH_TEXTBOX::SetSchTextSize, &SCH_TEXTBOX::GetSchTextSize,
                    PROPERTY_DISPLAY::PT_SIZE ),
                _HKI( "Text Properties" ) );

        propMgr.Mask( TYPE_HASH( SCH_TEXTBOX ), TYPE_HASH( EDA_TEXT ), _HKI( "Orientation" ) );
    }
} _SCH_TEXTBOX_DESC;