sch_item.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2006 Jean-Pierre Charras, [email protected]
 * Copyright (C) 1992-2024 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */
 
#include <pgm_base.h>
#include <settings/settings_manager.h>
#include <eeschema_settings.h>
#include <eda_item.h>
#include <sch_connection.h>
#include <sch_item.h>
#include <sch_screen.h>
#include <sch_sheet_path.h>
#include <sch_draw_panel.h>
#include <sch_edit_frame.h>
#include <schematic.h>
#include <symbol.h>
#include <connection_graph.h>
#include <trace_helpers.h>
#include <general.h>
#include <netclass.h>
#include <project/project_file.h>
#include <project/net_settings.h>
 
 
// Rendering fonts is expensive (particularly when using outline fonts). At small effective
// sizes (ie: zoomed out) the visual differences between outline and/or stroke fonts and the
// bitmap font becomes immaterial, and there's often more to draw when zoomed out so the
// performance gain becomes more significant.
#define BITMAP_FONT_SIZE_THRESHOLD 3
 
 
wxString SCH_ITEM::GetUnitDescription( int aUnit )
{
 if( aUnit == 0 )
 return _( "All" );
 else
 return LIB_SYMBOL::LetterSubReference( aUnit, 'A' );
}
 
 
wxString SCH_ITEM::GetBodyStyleDescription( int aBodyStyle )
{
 if( aBodyStyle == 0 )
 return _( "All" );
 else if( aBodyStyle == BODY_STYLE::DEMORGAN )
 return _( "Alternate" );
 else if( aBodyStyle == BODY_STYLE::BASE )
 return _( "Standard" );
 else
 return wxT( "?" );
}
 
 
/* Constructor and destructor for SCH_ITEM */
/* They are not inline because this creates problems with gcc at linking time in debug mode */
 
SCH_ITEM::SCH_ITEM( EDA_ITEM* aParent, KICAD_T aType, int aUnit, int aBodyStyle ) :
 EDA_ITEM( aParent, aType ),
 m_unit( aUnit ),
 m_bodyStyle( aBodyStyle ),
 m_private( false )
{
 m_layer = LAYER_WIRE; // It's only a default, in fact
 m_fieldsAutoplaced = FIELDS_AUTOPLACED_NO;
 m_connectivity_dirty = false; // Item is unconnected until it is placed, so it's clean
}
 
 
SCH_ITEM::SCH_ITEM( const SCH_ITEM& aItem ) :
 EDA_ITEM( aItem )
{
 m_layer = aItem.m_layer;
 m_unit = aItem.m_unit;
 m_bodyStyle = aItem.m_bodyStyle;
 m_private = aItem.m_private;
 m_fieldsAutoplaced = aItem.m_fieldsAutoplaced;
 m_connectivity_dirty = aItem.m_connectivity_dirty;
}
 
 
SCH_ITEM& SCH_ITEM::operator=( const SCH_ITEM& aItem )
{
 m_layer = aItem.m_layer;
 m_unit = aItem.m_unit;
 m_bodyStyle = aItem.m_bodyStyle;
 m_private = aItem.m_private;
 m_fieldsAutoplaced = aItem.m_fieldsAutoplaced;
 m_connectivity_dirty = aItem.m_connectivity_dirty;
 
 return *this;
}
 
 
SCH_ITEM::~SCH_ITEM()
{
 for( const auto& it : m_connection_map )
 delete it.second;
 
 // Do not try to modify SCHEMATIC::ConnectionGraph()
 // if the schematic does not exist
 if( !SCHEMATIC::m_IsSchematicExists )
 return;
 
 SCHEMATIC* sch = Schematic();
 
 if( sch != nullptr )
 sch->ConnectionGraph()->RemoveItem( this );
}
 
 
SCH_ITEM* SCH_ITEM::Duplicate( bool doClone ) const
{
 SCH_ITEM* newItem = (SCH_ITEM*) Clone();
 
 if( !doClone )
 const_cast<KIID&>( newItem->m_Uuid ) = KIID();
 
 newItem->ClearFlags( SELECTED | BRIGHTENED );
 
 newItem->RunOnChildren(
 []( SCH_ITEM* aChild )
 {
 aChild->ClearFlags( SELECTED | BRIGHTENED );
 } );
 
 return newItem;
}
 
 
SCHEMATIC* SCH_ITEM::Schematic() const
{
 EDA_ITEM* parent = GetParent();
 
 while( parent )
 {
 if( parent->Type() == SCHEMATIC_T )
 return static_cast<SCHEMATIC*>( parent );
 else
 parent = parent->GetParent();
 }
 
 return nullptr;
}
 
 
const SYMBOL* SCH_ITEM::GetParentSymbol() const
{
 const EDA_ITEM* parent = GetParent();
 
 while( parent )
 {
 if( parent->Type() == SCH_SYMBOL_T )
 return static_cast<const SCH_SYMBOL*>( parent );
 else if( parent->Type() == LIB_SYMBOL_T )
 return static_cast<const LIB_SYMBOL*>( parent );
 else
 parent = parent->GetParent();
 }
 
 return nullptr;
}
 
 
SYMBOL* SCH_ITEM::GetParentSymbol()
{
 EDA_ITEM* parent = GetParent();
 
 while( parent )
 {
 if( parent->Type() == SCH_SYMBOL_T )
 return static_cast<SCH_SYMBOL*>( parent );
 else if( parent->Type() == LIB_SYMBOL_T )
 return static_cast<LIB_SYMBOL*>( parent );
 else
 parent = parent->GetParent();
 }
 
 return nullptr;
}
 
 
void SCH_ITEM::ViewGetLayers( int aLayers[], int& aCount ) const
{
 // Basic fallback
 aCount = 3;
 aLayers[0] = LAYER_DEVICE;
 aLayers[1] = LAYER_DEVICE_BACKGROUND;
 aLayers[2] = LAYER_SELECTION_SHADOWS;
}
 
 
bool SCH_ITEM::IsConnected( const VECTOR2I& aPosition ) const
{
 if(( m_flags & STRUCT_DELETED ) || ( m_flags & SKIP_STRUCT ) )
 return false;
 
 return doIsConnected( aPosition );
}
 
 
SCH_CONNECTION* SCH_ITEM::Connection( const SCH_SHEET_PATH* aSheet ) const
{
 if( !IsConnectable() )
 return nullptr;
 
 if( !aSheet )
 aSheet = &Schematic()->CurrentSheet();
 
 auto it = m_connection_map.find( *aSheet );
 
 if( it == m_connection_map.end() )
 return nullptr;
 else
 return it->second;
}
 
 
void SCH_ITEM::SetConnectionGraph( CONNECTION_GRAPH* aGraph )
{
 for( auto& [path, conn] : m_connection_map )
 {
 conn->SetGraph( aGraph );
 
 for( auto& member : conn->AllMembers() )
 member->SetGraph( aGraph );
 }
}
 
 
std::shared_ptr<NETCLASS> SCH_ITEM::GetEffectiveNetClass( const SCH_SHEET_PATH* aSheet ) const
{
 static std::shared_ptr<NETCLASS> nullNetclass = std::make_shared<NETCLASS>( wxEmptyString );
 
 SCHEMATIC* schematic = Schematic();
 
 if( schematic )
 {
 std::shared_ptr<NET_SETTINGS>& netSettings = schematic->Prj().GetProjectFile().m_NetSettings;
 SCH_CONNECTION* connection = Connection( aSheet );
 
 if( connection )
 return netSettings->GetEffectiveNetClass( connection->Name() );
 else
 return netSettings->m_DefaultNetClass;
 }
 
 return nullNetclass;
}
 
 
void SCH_ITEM::ClearConnectedItems( const SCH_SHEET_PATH& aSheet )
{
 auto it = m_connected_items.find( aSheet );
 
 if( it != m_connected_items.end() )
 it->second.clear();
}
 
 
const SCH_ITEM_VEC& SCH_ITEM::ConnectedItems( const SCH_SHEET_PATH& aSheet )
{
 return m_connected_items[ aSheet ];
}
 
 
void SCH_ITEM::AddConnectionTo( const SCH_SHEET_PATH& aSheet, SCH_ITEM* aItem )
{
 SCH_ITEM_VEC& vec = m_connected_items[ aSheet ];
 
 // The vector elements are small, so reserve 1k at a time to prevent re-allocations
 if( vec.size() == vec.capacity() )
 vec.reserve( vec.size() + 4096 );
 
 // Add item to the correct place in the sorted vector if it is not already there
 auto it = std::lower_bound( vec.begin(), vec.end(), aItem );
 
 if( it == vec.end() || *it != aItem )
 vec.insert( it, aItem );
}
 
 
SCH_CONNECTION* SCH_ITEM::InitializeConnection( const SCH_SHEET_PATH& aSheet,
 CONNECTION_GRAPH* aGraph )
{
 SCH_CONNECTION* connection = Connection( &aSheet );
 
 // N.B. Do not clear the dirty connectivity flag here because we may need
 // to create a connection for a different sheet, and we don't want to
 // skip the connection creation because the flag is cleared.
 if( connection )
 {
 connection->Reset();
 }
 else
 {
 connection = new SCH_CONNECTION( this );
 m_connection_map.insert( std::make_pair( aSheet, connection ) );
 }
 
 connection->SetGraph( aGraph );
 connection->SetSheet( aSheet );
 return connection;
}
 
 
SCH_CONNECTION* SCH_ITEM::GetOrInitConnection( const SCH_SHEET_PATH& aSheet,
 CONNECTION_GRAPH* aGraph )
{
 if( !IsConnectable() )
 return nullptr;
 
 SCH_CONNECTION* connection = Connection( &aSheet );
 
 if( connection )
 return connection;
 else
 return InitializeConnection( aSheet, aGraph );
}
 
 
const wxString& SCH_ITEM::GetCachedDriverName() const
{
 static wxString s_empty;
 return s_empty;
}
 
 
void SCH_ITEM::SwapData( SCH_ITEM* aItem )
{
 UNIMPLEMENTED_FOR( GetClass() );
}
 
 
void SCH_ITEM::SwapFlags( SCH_ITEM* aItem )
{
 EDA_ITEM_FLAGS editFlags = GetEditFlags();
 EDA_ITEM_FLAGS tempFlags = GetTempFlags();
 EDA_ITEM_FLAGS aItem_editFlags = aItem->GetEditFlags();
 EDA_ITEM_FLAGS aItem_tempFlags = aItem->GetTempFlags();
 
 std::swap( m_flags, aItem->m_flags );
 
 ClearEditFlags();
 SetFlags( editFlags );
 ClearTempFlags();
 SetFlags( tempFlags );
 
 aItem->ClearEditFlags();
 aItem->SetFlags( aItem_editFlags );
 aItem->ClearTempFlags();
 aItem->SetFlags( aItem_tempFlags );
}
 
 
void SCH_ITEM::ClearCaches()
{
 auto clearTextCaches =
 []( SCH_ITEM* aItem )
 {
 EDA_TEXT* text = dynamic_cast<EDA_TEXT*>( aItem );
 
 if( text )
 {
 text->ClearBoundingBoxCache();
 text->ClearRenderCache();
 }
 };
 
 clearTextCaches( this );
 
 RunOnChildren( clearTextCaches );
}
 
 
bool SCH_ITEM::operator==( const SCH_ITEM& aOther ) const
{
 if( Type() != aOther.Type() )
 return false;
 
 return compare( aOther, SCH_ITEM::COMPARE_FLAGS::EQUALITY ) == 0;
}
 
 
bool SCH_ITEM::operator<( const SCH_ITEM& aOther ) const
{
 if( Type() != aOther.Type() )
 return Type() < aOther.Type();
 
 return ( compare( aOther ) < 0 );
}
 
 
bool SCH_ITEM::cmp_items::operator()( const SCH_ITEM* aFirst, const SCH_ITEM* aSecond ) const
{
 return aFirst->compare( *aSecond, COMPARE_FLAGS::EQUALITY ) < 0;
}
 
 
int SCH_ITEM::compare( const SCH_ITEM& aOther, int aCompareFlags ) const
{
 if( Type() != aOther.Type() )
 return Type() - aOther.Type();
 
 if( !( aCompareFlags & SCH_ITEM::COMPARE_FLAGS::UNIT ) && m_unit != aOther.m_unit )
 return m_unit - aOther.m_unit;
 
 if( !( aCompareFlags & SCH_ITEM::COMPARE_FLAGS::UNIT ) && m_bodyStyle != aOther.m_bodyStyle )
 return m_bodyStyle - aOther.m_bodyStyle;
 
 if( IsPrivate() != aOther.IsPrivate() )
 return IsPrivate() ? 1 : -1;
 
 if( !( aCompareFlags & SCH_ITEM::COMPARE_FLAGS::SKIP_TST_POS ) )
 {
 if( GetPosition().x != aOther.GetPosition().x )
 return GetPosition().x - aOther.GetPosition().x;
 
 if( GetPosition().y != aOther.GetPosition().y )
 return GetPosition().y - aOther.GetPosition().y;
 }
 
 if( ( aCompareFlags & SCH_ITEM::COMPARE_FLAGS::EQUALITY )
 || ( aCompareFlags & SCH_ITEM::COMPARE_FLAGS::ERC ) )
 {
 return 0;
 }
 
 if( m_Uuid < aOther.m_Uuid )
 return -1;
 
 if( m_Uuid > aOther.m_Uuid )
 return 1;
 
 return 0;
}
 
 
const wxString& SCH_ITEM::GetDefaultFont() const
{
 EESCHEMA_SETTINGS* cfg = Pgm().GetSettingsManager().GetAppSettings<EESCHEMA_SETTINGS>();
 
 return cfg->m_Appearance.default_font;
}
 
 
const KIFONT::METRICS& SCH_ITEM::GetFontMetrics() const
{
 if( SCHEMATIC* schematic = Schematic() )
 return schematic->Settings().m_FontMetrics;
 
 return KIFONT::METRICS::Default();
}
 
 
int SCH_ITEM::GetEffectivePenWidth( const SCH_RENDER_SETTINGS* aSettings ) const
{
 // For historical reasons, a stored value of 0 means "default width" and negative
 // numbers meant "don't stroke".
 
 if( GetPenWidth() < 0 )
 return 0;
 else if( GetPenWidth() == 0 )
 return std::max( aSettings->GetDefaultPenWidth(), aSettings->GetMinPenWidth() );
 else
 return std::max( GetPenWidth(), aSettings->GetMinPenWidth() );
}
 
 
bool SCH_ITEM::RenderAsBitmap( double aWorldScale ) const
{
 if( IsHypertext() )
 return false;
 
 if( const EDA_TEXT* text = dynamic_cast<const EDA_TEXT*>( this ) )
 return text->GetTextHeight() * aWorldScale < BITMAP_FONT_SIZE_THRESHOLD;
 
 return false;
}
 
 
void SCH_ITEM::getSymbolEditorMsgPanelInfo( EDA_DRAW_FRAME* aFrame,
 std::vector<MSG_PANEL_ITEM>& aList )
{
 wxString msg;
 
 aList.emplace_back( _( "Type" ), GetFriendlyName() );
 
 if( const SYMBOL* parent = GetParentSymbol() )
 {
 if( parent->GetUnitCount() )
 aList.emplace_back( _( "Unit" ), GetUnitDescription( m_unit ) );
 
 if( parent->HasAlternateBodyStyle() )
 aList.emplace_back( _( "Body Style" ), GetBodyStyleDescription( m_bodyStyle ) );
 }
 
 if( IsPrivate() )
 aList.emplace_back( _( "Private" ), wxEmptyString );
}
 
 
static struct SCH_ITEM_DESC
{
 SCH_ITEM_DESC()
 {
 PROPERTY_MANAGER& propMgr = PROPERTY_MANAGER::Instance();
 REGISTER_TYPE( SCH_ITEM );
 propMgr.InheritsAfter( TYPE_HASH( SCH_ITEM ), TYPE_HASH( EDA_ITEM ) );
 
#ifdef NOTYET
 // Not yet functional in UI
 propMgr.AddProperty( new PROPERTY<SCH_ITEM, bool>( _HKI( "Locked" ),
 &SCH_ITEM::SetLocked, &SCH_ITEM::IsLocked ) );
#endif
 
 auto multiUnit =
 [=]( INSPECTABLE* aItem ) -> bool
 {
 if( SCH_ITEM* schItem = dynamic_cast<SCH_ITEM*>( aItem ) )
 {
 if( const SYMBOL* symbol = schItem->GetParentSymbol() )
 return symbol->IsMulti();
 }
 
 return false;
 };
 
 auto multiBodyStyle =
 [=]( INSPECTABLE* aItem ) -> bool
 {
 if( SCH_ITEM* schItem = dynamic_cast<SCH_ITEM*>( aItem ) )
 {
 if( const SYMBOL* symbol = schItem->GetParentSymbol() )
 return symbol->HasAlternateBodyStyle();
 }
 
 return false;
 };
 
 propMgr.AddProperty( new PROPERTY<SCH_ITEM, int>( _HKI( "Unit" ),
 &SCH_ITEM::SetUnit, &SCH_ITEM::GetUnit ) )
 .SetAvailableFunc( multiUnit )
 .SetIsHiddenFromDesignEditors();
 
 propMgr.AddProperty( new PROPERTY<SCH_ITEM, int>( _HKI( "Body Style" ),
 &SCH_ITEM::SetBodyStyle, &SCH_ITEM::GetBodyStyle ) )
 .SetAvailableFunc( multiBodyStyle )
 .SetIsHiddenFromDesignEditors();
 
 propMgr.AddProperty( new PROPERTY<SCH_ITEM, bool>( _HKI( "Private" ),
 &SCH_ITEM::SetPrivate, &SCH_ITEM::IsPrivate ) )
 .SetIsHiddenFromDesignEditors();
 }
} _SCH_ITEM_DESC;
 
IMPLEMENT_ENUM_TO_WXANY( SCH_LAYER_ID )
 
 
static bool lessYX( const DANGLING_END_ITEM& a, const DANGLING_END_ITEM& b )
{
 const auto aPos = a.GetPosition();
 const auto bPos = b.GetPosition();
 return aPos.y < bPos.y ? true : ( aPos.y > bPos.y ? false : aPos.x < bPos.x );
};
 
 
static bool lessType( const DANGLING_END_ITEM& a, const DANGLING_END_ITEM& b )
{
 return a.GetType() < b.GetType();
};
 
 
std::vector<DANGLING_END_ITEM>::iterator
DANGLING_END_ITEM_HELPER::get_lower_pos( std::vector<DANGLING_END_ITEM>& aItemListByPos,
 const VECTOR2I& aPos )
{
 DANGLING_END_ITEM needle = DANGLING_END_ITEM( PIN_END, nullptr, aPos );
 auto start = aItemListByPos.begin();
 auto end = aItemListByPos.end();
 return std::lower_bound( start, end, needle, lessYX );
}
 
 
std::vector<DANGLING_END_ITEM>::iterator
DANGLING_END_ITEM_HELPER::get_lower_type( std::vector<DANGLING_END_ITEM>& aItemListByType,
 const DANGLING_END_T& aType )
{
 DANGLING_END_ITEM needle = DANGLING_END_ITEM( aType, nullptr, VECTOR2I{} );
 auto start = aItemListByType.begin();
 auto end = aItemListByType.end();
 return std::lower_bound( start, end, needle, lessType );
}
 
 
void DANGLING_END_ITEM_HELPER::sort_dangling_end_items(
 std::vector<DANGLING_END_ITEM>& aItemListByType,
 std::vector<DANGLING_END_ITEM>& aItemListByPos )
{
 // WIRE_END pairs must be kept together. Hence stable sort.
 std::stable_sort( aItemListByType.begin(), aItemListByType.end(), lessType );
 // Sort by y first, pins are more likely to share x than y.
 std::sort( aItemListByPos.begin(), aItemListByPos.end(), lessYX );
}