sch_text.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 (C) 1992-2023 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 <advanced_config.h>
#include <base_units.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 <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 <tools/sch_navigate_tool.h>
#include <trigo.h>
 
 
SCH_TEXT::SCH_TEXT( const VECTOR2I& aPos, const wxString& aText, SCH_LAYER_ID aLayer,
 KICAD_T aType ) :
 SCH_ITEM( nullptr, aType ),
 EDA_TEXT( schIUScale, aText )
{
 m_layer = aLayer;
 
 SetTextPos( aPos );
 SetMultilineAllowed( true );
 
 m_excludedFromSim = false;
}
 
 
SCH_TEXT::SCH_TEXT( const SCH_TEXT& aText ) :
 SCH_ITEM( aText ),
 EDA_TEXT( aText )
{
 m_excludedFromSim = aText.m_excludedFromSim;
}
 
 
VECTOR2I SCH_TEXT::GetSchematicTextOffset( const RENDER_SETTINGS* aSettings ) const
{
 // Fudge factor to match KiCad 6
 return VECTOR2I( 0, -2500 );
}
 
 
void SCH_TEXT::NormalizeJustification( bool inverse )
{
 if( GetHorizJustify() == GR_TEXT_H_ALIGN_CENTER && GetVertJustify() == GR_TEXT_V_ALIGN_CENTER )
 return;
 
 VECTOR2I delta( 0, 0 );
 BOX2I bbox = GetTextBox();
 
 if( GetTextAngle().IsHorizontal() )
 {
 if( GetHorizJustify() == GR_TEXT_H_ALIGN_LEFT )
 delta.x = bbox.GetWidth() / 2;
 else if( GetHorizJustify() == GR_TEXT_H_ALIGN_RIGHT )
 delta.x = - bbox.GetWidth() / 2;
 
 if( GetVertJustify() == GR_TEXT_V_ALIGN_TOP )
 delta.y = - bbox.GetHeight() / 2;
 else if( GetVertJustify() == GR_TEXT_V_ALIGN_BOTTOM )
 delta.y = bbox.GetHeight() / 2;
 }
 else
 {
 if( GetHorizJustify() == GR_TEXT_H_ALIGN_LEFT )
 delta.y = bbox.GetWidth() / 2;
 else if( GetHorizJustify() == GR_TEXT_H_ALIGN_RIGHT )
 delta.y = - bbox.GetWidth() / 2;
 
 if( GetVertJustify() == GR_TEXT_V_ALIGN_TOP )
 delta.x = + bbox.GetHeight() / 2;
 else if( GetVertJustify() == GR_TEXT_V_ALIGN_BOTTOM )
 delta.x = - bbox.GetHeight() / 2;
 }
 
 if( inverse )
 SetTextPos( GetTextPos() - delta );
 else
 SetTextPos( GetTextPos() + delta );
}
 
 
void SCH_TEXT::MirrorHorizontally( int aCenter )
{
 if( m_layer == LAYER_DEVICE )
 {
 NormalizeJustification( false );
 int x = GetTextPos().x;
 
 x -= aCenter;
 x *= -1;
 x += aCenter;
 
 if( GetTextAngle().IsHorizontal() )
 {
 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 );
 }
 else
 {
 if( GetVertJustify() == GR_TEXT_V_ALIGN_TOP )
 SetVertJustify( GR_TEXT_V_ALIGN_BOTTOM );
 else if( GetVertJustify() == GR_TEXT_V_ALIGN_BOTTOM )
 SetVertJustify( GR_TEXT_V_ALIGN_TOP );
 }
 
 SetTextX( x );
 NormalizeJustification( true );
 }
 else
 {
 if( GetTextAngle() == ANGLE_HORIZONTAL )
 FlipHJustify();
 
 SetTextX( MIRRORVAL( GetTextPos().x, aCenter ) );
 }
}
 
 
void SCH_TEXT::MirrorVertically( int aCenter )
{
 if( m_layer == LAYER_DEVICE )
 {
 NormalizeJustification( false );
 int y = GetTextPos().y;
 
 y -= aCenter;
 y *= -1;
 y += aCenter;
 
 if( GetTextAngle().IsHorizontal() )
 {
 if( GetVertJustify() == GR_TEXT_V_ALIGN_TOP )
 SetVertJustify( GR_TEXT_V_ALIGN_BOTTOM );
 else if( GetVertJustify() == GR_TEXT_V_ALIGN_BOTTOM )
 SetVertJustify( GR_TEXT_V_ALIGN_TOP );
 }
 else
 {
 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 );
 }
 
 SetTextY( y );
 NormalizeJustification( true );
 }
 else
 {
 if( GetTextAngle() == ANGLE_VERTICAL )
 FlipHJustify();
 
 SetTextY( MIRRORVAL( GetTextPos().y, aCenter ) );
 }
}
 
 
void SCH_TEXT::Rotate( const VECTOR2I& aCenter, bool aRotateCCW )
{
 VECTOR2I pt = GetTextPos();
 RotatePoint( pt, aCenter, aRotateCCW ? ANGLE_90 : ANGLE_270 );
 VECTOR2I offset = pt - GetTextPos();
 
 Rotate90( false );
 
 SetTextPos( GetTextPos() + offset );
}
 
 
void SCH_TEXT::Rotate90( bool aClockwise )
{
 if( ( GetTextAngle() == ANGLE_HORIZONTAL && aClockwise )
 || ( GetTextAngle() == ANGLE_VERTICAL && !aClockwise ) )
 {
 FlipHJustify();
 }
 
 SetTextAngle( GetTextAngle() == ANGLE_VERTICAL ? ANGLE_HORIZONTAL : ANGLE_VERTICAL );
}
 
 
void SCH_TEXT::MirrorSpinStyle( bool aLeftRight )
{
 if( ( GetTextAngle() == ANGLE_HORIZONTAL && aLeftRight )
 || ( GetTextAngle() == ANGLE_VERTICAL && !aLeftRight ) )
 {
 FlipHJustify();
 }
}
 
 
void SCH_TEXT::SwapData( SCH_ITEM* aItem )
{
 SCH_ITEM::SwapFlags( aItem );
 
 SCH_TEXT* item = static_cast<SCH_TEXT*>( aItem );
 
 std::swap( m_layer, item->m_layer );
 
 SwapText( *item );
 SwapAttributes( *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;
 
 if( GetExcludedFromSim() != other->GetExcludedFromSim() )
 return GetExcludedFromSim() - other->GetExcludedFromSim();
 
 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 );
}
 
 
int SCH_TEXT::GetPenWidth() const
{
 return GetEffectiveTextPenWidth();
}
 
 
KIFONT::FONT* SCH_TEXT::getDrawFont() const
{
 KIFONT::FONT* font = EDA_TEXT::GetFont();
 
 if( !font )
 font = KIFONT::FONT::GetFont( GetDefaultFont(), IsBold(), IsItalic() );
 
 return font;
}
 
 
void SCH_TEXT::Print( const SCH_RENDER_SETTINGS* aSettings, int aUnit, int aBodyStyle,
 const VECTOR2I& aOffset, bool aForceNoFill, bool aDimmed )
{
 COLOR4D color = GetTextColor();
 COLOR4D bg = aSettings->GetBackgroundColor();
 bool blackAndWhiteMode = GetGRForceBlackPenState();
 
 if( blackAndWhiteMode || color == COLOR4D::UNSPECIFIED )
 color = aSettings->GetLayerColor( m_layer );
 
 if( bg == COLOR4D::UNSPECIFIED || GetGRForceBlackPenState() )
 bg = COLOR4D::WHITE;
 
 if( !IsVisible() )
 bg = aSettings->GetLayerColor( LAYER_HIDDEN );
 
 if( aDimmed )
 {
 color.Desaturate( );
 color = color.Mix( bg, 0.5f );
 }
 
 KIFONT::FONT* font = GetFont();
 
 if( !font )
 font = KIFONT::FONT::GetFont( aSettings->GetDefaultFont(), IsBold(), IsItalic() );
 
 if( m_layer == LAYER_DEVICE )
 {
 wxDC* DC = aSettings->GetPrintDC();
 int penWidth = std::max( GetEffectiveTextPenWidth(), aSettings->GetDefaultPenWidth() );
 
 // Calculate the text orientation, according to the symbol orientation/mirror (needed when
 // draw text in schematic)
 EDA_ANGLE orient = GetTextAngle();
 
 if( aSettings->m_Transform.y1 ) // Rotate symbol 90 degrees.
 {
 if( orient == ANGLE_HORIZONTAL )
 orient = ANGLE_VERTICAL;
 else
 orient = ANGLE_HORIZONTAL;
 }
 
 /*
 * Calculate the text justification, according to the symbol orientation/mirror.
 * This is a bit complicated due to cumulative calculations:
 * - numerous cases (mirrored or not, rotation)
 * - the GRText function will also recalculate H and V justifications according to the text
 * orientation.
 * - When a symbol is mirrored, the text is not mirrored and justifications are complicated
 * to calculate so the more easily way is to use no justifications (centered text) and
 * use GetBoundingBox to know the text coordinate considered as centered
 */
 BOX2I bBox = GetBoundingBox();
 VECTOR2I txtpos = bBox.Centre();
 
 // Calculate pos according to mirror/rotation.
 txtpos = aSettings->m_Transform.TransformCoordinate( txtpos ) + aOffset;
 
 GRPrintText( DC, txtpos, color, GetShownText( true ), orient, GetTextSize(),
 GR_TEXT_H_ALIGN_CENTER, GR_TEXT_V_ALIGN_CENTER, penWidth, IsItalic(),
 IsBold(), font, GetFontMetrics() );
 }
 else
 {
 VECTOR2I text_offset = aOffset + GetSchematicTextOffset( aSettings );
 
 // Adjust text drawn in an outline font to more closely mimic the positioning of
 // SCH_FIELD text.
 if( font->IsOutline() )
 {
 BOX2I firstLineBBox = GetTextBox( 0 );
 int sizeDiff = firstLineBBox.GetHeight() - GetTextSize().y;
 int adjust = KiROUND( sizeDiff * 0.4 );
 VECTOR2I adjust_offset( 0, - adjust );
 
 RotatePoint( adjust_offset, GetDrawRotation() );
 text_offset += adjust_offset;
 }
 
 EDA_TEXT::Print( aSettings, text_offset, color );
 }
}
 
 
const BOX2I SCH_TEXT::GetBoundingBox() const
{
 BOX2I bbox = GetTextBox();
 
 if( !GetTextAngle().IsZero() ) // Rotate bbox.
 {
 VECTOR2I pos = bbox.GetOrigin();
 VECTOR2I end = bbox.GetEnd();
 
 RotatePoint( pos, GetTextPos(), GetTextAngle() );
 RotatePoint( end, GetTextPos(), GetTextAngle() );
 
 bbox.SetOrigin( pos );
 bbox.SetEnd( end );
 }
 
 bbox.Normalize();
 return bbox;
}
 
 
wxString SCH_TEXT::GetShownText( const SCH_SHEET_PATH* aPath, bool aAllowExtraText,
 int aDepth ) const
{
 SCH_SHEET* sheet = nullptr;
 
 if( aPath )
 sheet = aPath->Last();
 else if( SCHEMATIC* schematic = Schematic() )
 sheet = schematic->CurrentSheet().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( text == wxS( "~" ) ) // Legacy placeholder for empty string
 {
 text = wxS( "" );
 }
 else if( HasTextVars() )
 {
 if( aDepth < ADVANCED_CFG::GetCfg().m_ResolveTextRecursionDepth )
 text = ExpandTextVars( text, &textResolver );
 }
 
 return text;
}
 
 
void SCH_TEXT::DoHypertextAction( EDA_DRAW_FRAME* aFrame ) const
{
 wxCHECK_MSG( IsHypertext(), /* void */,
 wxT( "Calling a hypertext menu on a SCH_TEXT with no hyperlink?" ) );
 
 SCH_NAVIGATE_TOOL* navTool = aFrame->GetToolManager()->GetTool<SCH_NAVIGATE_TOOL>();
 navTool->HypertextCommand( m_hyperlink );
}
 
 
wxString SCH_TEXT::GetItemDescription( UNITS_PROVIDER* aUnitsProvider, bool aFull ) const
{
 return wxString::Format( _( "Graphic Text '%s'" ),
 aFull ? GetShownText( false ) : KIUI::EllipsizeMenuText( GetText() ) );
}
 
 
BITMAPS SCH_TEXT::GetMenuImage() const
{
 return BITMAPS::text;
}
 
 
bool SCH_TEXT::HitTest( const VECTOR2I& aPosition, int aAccuracy ) const
{
 BOX2I bBox = GetBoundingBox();
 bBox.Inflate( aAccuracy );
 return bBox.Contains( aPosition );
}
 
 
bool SCH_TEXT::HitTest( const BOX2I& aRect, bool aContained, int aAccuracy ) const
{
 if( m_flags & (STRUCT_DELETED | SKIP_STRUCT ) )
 return false;
 
 BOX2I rect = aRect;
 BOX2I bBox = GetBoundingBox();
 
 rect.Inflate( aAccuracy );
 
 if( aContained )
 return aRect.Contains( bBox );
 
 return aRect.Intersects( bBox );
}
 
 
void SCH_TEXT::BeginEdit( const VECTOR2I& aPosition )
{
 SetTextPos( aPosition );
}
 
 
void SCH_TEXT::CalcEdit( const VECTOR2I& aPosition )
{
 SetTextPos( aPosition );
}
 
 
void SCH_TEXT::ViewGetLayers( int aLayers[], int& aCount ) const
{
 aCount = 2;
 aLayers[0] = IsPrivate() ? LAYER_PRIVATE_NOTES : m_layer;
 aLayers[1] = LAYER_SELECTION_SHADOWS;
}
 
 
void SCH_TEXT::Plot( PLOTTER* aPlotter, bool aBackground, const SCH_PLOT_OPTS& aPlotOpts,
 int aUnit, int aBodyStyle, const VECTOR2I& aOffset, bool aDimmed )
{
 if( aBackground || IsPrivate() )
 return;
 
 SCH_RENDER_SETTINGS* renderSettings = getRenderSettings( aPlotter );
 COLOR4D color = GetTextColor();
 COLOR4D bg = renderSettings->GetBackgroundColor();
 
 if( !aPlotter->GetColorMode() || color == COLOR4D::UNSPECIFIED )
 {
 SCH_CONNECTION* connection = Connection();
 
 if( connection && connection->IsBus() )
 color = renderSettings->GetLayerColor( LAYER_BUS );
 else
 color = renderSettings->GetLayerColor( m_layer );
 }
 
 if( !IsVisible() )
 bg = renderSettings->GetLayerColor( LAYER_HIDDEN );
 else if( bg == COLOR4D::UNSPECIFIED || !aPlotter->GetColorMode() )
 bg = COLOR4D::WHITE;
 
 if( aDimmed )
 {
 color.Desaturate( );
 color = color.Mix( bg, 0.5f );
 }
 
 int penWidth = GetEffectiveTextPenWidth( renderSettings->GetDefaultPenWidth() );
 penWidth = std::max( penWidth, renderSettings->GetMinPenWidth() );
 aPlotter->SetCurrentLineWidth( penWidth );
 
 KIFONT::FONT* font = GetFont();
 
 if( !font )
 font = KIFONT::FONT::GetFont( renderSettings->GetDefaultFont(), IsBold(), IsItalic() );
 
 TEXT_ATTRIBUTES attrs = GetAttributes();
 attrs.m_StrokeWidth = penWidth;
 
 if( m_layer == LAYER_DEVICE )
 {
 BOX2I bBox = GetBoundingBox();
 
 /*
 * Calculate the text justification, according to the symbol orientation/mirror. This is
 * a bit complicated due to cumulative calculations:
 * - numerous cases (mirrored or not, rotation)
 * - the plotter's Text() function will also recalculate H and V justifications according
 * to the text orientation
 * - when a symbol is mirrored the text is not, and justifications become a nightmare
 *
 * So the easier way is to use no justifications (centered text) and use GetBoundingBox to
 * know the text coordinate considered as centered.
 */
 VECTOR2I txtpos = bBox.Centre();
 attrs.m_Halign = GR_TEXT_H_ALIGN_CENTER;
 attrs.m_Valign = GR_TEXT_V_ALIGN_CENTER;
 
 // The text orientation may need to be flipped if the transformation matrix causes xy
 // axes to be flipped.
 if( ( renderSettings->m_Transform.x1 != 0 ) ^ ( GetTextAngle() != ANGLE_HORIZONTAL ) )
 attrs.m_Angle = ANGLE_HORIZONTAL;
 else
 attrs.m_Angle = ANGLE_VERTICAL;
 
 aPlotter->PlotText( renderSettings->TransformCoordinate( txtpos ) + aOffset, color,
 GetText(), attrs, font, GetFontMetrics() );
 }
 else
 {
 SCH_SHEET_PATH* sheet = &Schematic()->CurrentSheet();
 VECTOR2I text_offset = GetSchematicTextOffset( aPlotter->RenderSettings() );
 
 // Adjust text drawn in an outline font to more closely mimic the positioning of
 // SCH_FIELD text.
 if( font->IsOutline() )
 {
 BOX2I firstLineBBox = GetTextBox( 0 );
 int sizeDiff = firstLineBBox.GetHeight() - GetTextSize().y;
 int adjust = KiROUND( sizeDiff * 0.4 );
 VECTOR2I adjust_offset( 0, - adjust );
 
 RotatePoint( adjust_offset, GetDrawRotation() );
 text_offset += adjust_offset;
 }
 
 std::vector<VECTOR2I> positions;
 wxArrayString strings_list;
 wxStringSplit( GetShownText( sheet, true ), strings_list, '\n' );
 positions.reserve( strings_list.Count() );
 
 GetLinePositions( positions, (int) strings_list.Count() );
 
 attrs.m_Multiline = false;
 
 for( unsigned ii = 0; ii < strings_list.Count(); ii++ )
 {
 VECTOR2I textpos = positions[ii] + text_offset;
 wxString& txt = strings_list.Item( ii );
 aPlotter->PlotText( textpos, color, txt, attrs, font, GetFontMetrics() );
 }
 
 if( HasHyperlink() )
 aPlotter->HyperlinkBox( GetBoundingBox(), GetHyperlink() );
 }
}
 
 
void SCH_TEXT::GetMsgPanelInfo( EDA_DRAW_FRAME* aFrame, std::vector<MSG_PANEL_ITEM>& aList )
{
 wxString msg;
 
 // Don't use GetShownText() here; we want to show the user the variable references
 aList.emplace_back( _( "Text" ), 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() ) );
 
 switch( GetHorizJustify() )
 {
 case GR_TEXT_H_ALIGN_LEFT: msg = _( "Align left" ); break;
 case GR_TEXT_H_ALIGN_CENTER: msg = _( "Align center" ); break;
 case GR_TEXT_H_ALIGN_RIGHT: msg = _( "Align right" ); break;
 case GR_TEXT_H_ALIGN_INDETERMINATE: msg = INDETERMINATE_STATE; break;
 }
 
 if( m_layer == LAYER_DEVICE )
 {
 aList.emplace_back( _( "H Justification" ), msg );
 
 switch ( GetVertJustify() )
 {
 case GR_TEXT_V_ALIGN_TOP: msg = _( "Top" ); break;
 case GR_TEXT_V_ALIGN_CENTER: msg = _( "Center" ); break;
 case GR_TEXT_V_ALIGN_BOTTOM: msg = _( "Bottom" ); break;
 case GR_TEXT_V_ALIGN_INDETERMINATE: msg = INDETERMINATE_STATE; break;
 }
 
 aList.emplace_back( _( "V Justification" ), msg );
 }
 else
 {
 aList.emplace_back( _( "Justification" ), msg );
 }
}
 
bool SCH_TEXT::operator==( const SCH_ITEM& aOther ) const
{
 if( Type() != aOther.Type() )
 return false;
 
 const SCH_TEXT* other = static_cast<const SCH_TEXT*>( &aOther );
 
 if( GetLayer() != other->GetLayer() )
 return false;
 
 if( GetExcludedFromSim() != other->GetExcludedFromSim() )
 return false;
 
 return EDA_TEXT::operator==( *other );
}
 
 
double SCH_TEXT::Similarity( const SCH_ITEM& aOther ) const
{
 if( m_Uuid == aOther.m_Uuid )
 return 1.0;
 
 if( Type() != aOther.Type() )
 return 0.0;
 
 const SCH_TEXT* other = static_cast<const SCH_TEXT*>( &aOther );
 
 double retval = SimilarityBase( aOther );
 
 if( GetLayer() != other->GetLayer() )
 retval *= 0.9;
 
 if( GetExcludedFromSim() != other->GetExcludedFromSim() )
 retval *= 0.9;
 
 retval *= EDA_TEXT::Similarity( *other );
 
 return retval;
}
 
 
int SCH_TEXT::compare( const SCH_ITEM& aOther, int aCompareFlags ) const
{
 wxASSERT( aOther.Type() == SCH_TEXT_T );
 
 int retv = SCH_ITEM::compare( aOther, aCompareFlags );
 
 if( retv )
 return retv;
 
 const SCH_TEXT& tmp = static_cast<const SCH_TEXT&>( aOther );
 
 int result = GetText().CmpNoCase( tmp.GetText() );
 
 if( result != 0 )
 return result;
 
 if( GetTextPos().x != tmp.GetTextPos().x )
 return GetTextPos().x - tmp.GetTextPos().x;
 
 if( GetTextPos().y != tmp.GetTextPos().y )
 return GetTextPos().y - tmp.GetTextPos().y;
 
 if( GetTextWidth() != tmp.GetTextWidth() )
 return GetTextWidth() - tmp.GetTextWidth();
 
 if( GetTextHeight() != tmp.GetTextHeight() )
 return GetTextHeight() - tmp.GetTextHeight();
 
 return 0;
}
 
 
#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 << '"'
 << '>'
 << TO_UTF8( GetText() )
 << "</" << s.Lower().mb_str() << ">\n";
}
 
#endif
 
 
static struct SCH_TEXT_DESC
{
 SCH_TEXT_DESC()
 {
 PROPERTY_MANAGER& propMgr = PROPERTY_MANAGER::Instance();
 REGISTER_TYPE( SCH_TEXT );
 propMgr.AddTypeCast( new TYPE_CAST<SCH_TEXT, SCH_ITEM> );
 propMgr.AddTypeCast( new TYPE_CAST<SCH_TEXT, EDA_TEXT> );
 propMgr.InheritsAfter( TYPE_HASH( SCH_TEXT ), TYPE_HASH( SCH_ITEM ) );
 propMgr.InheritsAfter( TYPE_HASH( SCH_TEXT ), TYPE_HASH( EDA_TEXT ) );
 
 propMgr.Mask( TYPE_HASH( SCH_TEXT ), TYPE_HASH( EDA_TEXT ), _HKI( "Mirrored" ) );
 propMgr.Mask( TYPE_HASH( SCH_TEXT ), TYPE_HASH( EDA_TEXT ), _HKI( "Visible" ) );
 propMgr.Mask( TYPE_HASH( SCH_TEXT ), TYPE_HASH( EDA_TEXT ), _HKI( "Width" ) );
 propMgr.Mask( TYPE_HASH( SCH_TEXT ), TYPE_HASH( EDA_TEXT ), _HKI( "Height" ) );
 propMgr.Mask( TYPE_HASH( SCH_TEXT ), TYPE_HASH( EDA_TEXT ), _HKI( "Thickness" ) );
 
 propMgr.AddProperty( new PROPERTY<SCH_TEXT, int>( _HKI( "Text Size" ),
 &SCH_TEXT::SetSchTextSize, &SCH_TEXT::GetSchTextSize, PROPERTY_DISPLAY::PT_SIZE ),
 _HKI( "Text Properties" ) );
 
 // Orientation is exposed differently in schematic; mask the base for now
 propMgr.Mask( TYPE_HASH( SCH_TEXT ), TYPE_HASH( EDA_TEXT ), _HKI( "Orientation" ) );
 }
} _SCH_TEXT_DESC;