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) 1992-2021 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
 */
 
#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 <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
 
 
/* 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 ) :
 EDA_ITEM( aParent, aType )
{
 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_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_fieldsAutoplaced = aItem.m_fieldsAutoplaced;
 m_connectivity_dirty = aItem.m_connectivity_dirty;
 
 return *this;
}
 
 
SCH_ITEM::~SCH_ITEM()
{
 // Do not let the connections container go out of scope with any objects or they
 // will be deleted by the container will cause the Eeschema to crash. These objects
 // are owned by the sheet object container.
 if( !m_connections.empty() )
 m_connections.clear();
 
 for( const auto& it : m_connection_map )
 delete it.second;
}
 
 
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;
}
 
 
void SCH_ITEM::ViewGetLayers( int aLayers[], int& aCount ) const
{
 // Basic fallback
 aCount = 2;
 aLayers[0] = LAYER_DEVICE;
 aLayers[1] = 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;
 
 wxCHECK_MSG( !IsConnectivityDirty(), nullptr,
 wxT( "Shouldn't be asking for connection if connectivity is dirty!" ) );
 
 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 );
}
 
 
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;
}
 
 
SCH_ITEM_SET& 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_SET& set = m_connected_items[ aSheet ];
 
 // The vector elements are small, so reserve 1k at a time to prevent re-allocations
 if( set.size() == set.capacity() )
 set.reserve( set.size() + 4096 );
 
 set.emplace_back( aItem );
}
 
 
SCH_CONNECTION* SCH_ITEM::InitializeConnection( const SCH_SHEET_PATH& aSheet,
 CONNECTION_GRAPH* aGraph )
{
 SetConnectivityDirty( false );
 
 SCH_CONNECTION* connection = Connection( &aSheet );
 
 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;
 
 SetConnectivityDirty( false );
 
 SCH_CONNECTION* connection = Connection( &aSheet );
 
 if( connection )
 return connection;
 else
 return InitializeConnection( aSheet, aGraph );
}
 
 
void SCH_ITEM::SwapData( SCH_ITEM* aItem )
{
 UNIMPLEMENTED_FOR( GetClass() );
}
 
 
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& aItem ) const
{
 if( Type() != aItem.Type() )
 return Type() < aItem.Type();
 
 if( GetPosition().x != aItem.GetPosition().x )
 return GetPosition().x < aItem.GetPosition().x;
 
 if( GetPosition().y != aItem.GetPosition().y )
 return GetPosition().y < aItem.GetPosition().y;
 
 return m_Uuid < aItem.m_Uuid;
}
 
 
const wxString& SCH_ITEM::GetDefaultFont() const
{
 EESCHEMA_SETTINGS* cfg = Pgm().GetSettingsManager().GetAppSettings<EESCHEMA_SETTINGS>();
 
 return cfg->m_Appearance.default_font;
}
 
 
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::Plot( PLOTTER* aPlotter, bool aBackground ) const
{
 wxFAIL_MSG( wxT( "Plot() method not implemented for class " ) + GetClass() );
}