board_inspection_tool.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2019-2024 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 <bitmaps.h>
#include <pcb_group.h>
#include <tool/tool_manager.h>
#include <tools/pcb_selection_tool.h>
#include <tools/pcb_picker_tool.h>
#include <tools/edit_tool.h>
#include <pcb_painter.h>
#include <connectivity/connectivity_data.h>
#include <drc/drc_engine.h>
#include <dialogs/dialog_board_statistics.h>
#include <dialogs/dialog_book_reporter.h>
#include <dialogs/panel_setup_rules_base.h>
#include <dialogs/dialog_footprint_associations.h>
#include <string_utils.h>
#include <tools/board_inspection_tool.h>
#include <fp_lib_table.h>
#include <pcb_shape.h>
#include <pcbnew_settings.h>
#include <widgets/appearance_controls.h>
#include <widgets/wx_html_report_box.h>
#include <widgets/footprint_diff_widget.h>
#include <drc/drc_item.h>
#include <pad.h>
#include <project_pcb.h>
#include <view/view_controls.h>
 
 
BOARD_INSPECTION_TOOL::BOARD_INSPECTION_TOOL() :
 PCB_TOOL_BASE( "pcbnew.InspectionTool" ),
 m_frame( nullptr )
{
 m_dynamicData = nullptr;
}
 
 
class NET_CONTEXT_MENU : public ACTION_MENU
{
public:
 NET_CONTEXT_MENU() : ACTION_MENU( true )
 {
 SetIcon( BITMAPS::show_ratsnest );
 SetTitle( _( "Net Inspection Tools" ) );
 
 Add( PCB_ACTIONS::showNetInRatsnest );
 Add( PCB_ACTIONS::hideNetInRatsnest );
 AppendSeparator();
 Add( PCB_ACTIONS::highlightNetSelection );
 Add( PCB_ACTIONS::clearHighlight );
 }
 
private:
 ACTION_MENU* create() const override
 {
 return new NET_CONTEXT_MENU();
 }
};
 
 
bool BOARD_INSPECTION_TOOL::Init()
{
 PCB_SELECTION_TOOL* selectionTool = m_toolMgr->GetTool<PCB_SELECTION_TOOL>();
 
 std::shared_ptr<NET_CONTEXT_MENU> netSubMenu = std::make_shared<NET_CONTEXT_MENU>();
 netSubMenu->SetTool( this );
 
 // Only show the net menu if all items in the selection are connectable
 auto showNetMenuFunc =
 []( const SELECTION& aSelection )
 {
 if( aSelection.Empty() )
 return false;
 
 for( const EDA_ITEM* item : aSelection )
 {
 switch( item->Type() )
 {
 case PCB_TRACE_T:
 case PCB_ARC_T:
 case PCB_VIA_T:
 case PCB_PAD_T:
 case PCB_ZONE_T:
 continue;
 
 case PCB_SHAPE_T:
 {
 if( !static_cast<const PCB_SHAPE*>( item )->IsOnCopperLayer() )
 return false;
 else
 continue;
 }
 
 default:
 return false;
 }
 }
 
 return true;
 };
 
 CONDITIONAL_MENU& menu = selectionTool->GetToolMenu().GetMenu();
 
 selectionTool->GetToolMenu().RegisterSubMenu( netSubMenu );
 
 menu.AddMenu( netSubMenu.get(), showNetMenuFunc, 100 );
 
 return true;
}
 
 
void BOARD_INSPECTION_TOOL::Reset( RESET_REASON aReason )
{
 m_frame = getEditFrame<PCB_EDIT_FRAME>();
}
 
 
int BOARD_INSPECTION_TOOL::ShowBoardStatistics( const TOOL_EVENT& aEvent )
{
 DIALOG_BOARD_STATISTICS dialog( m_frame );
 dialog.ShowModal();
 return 0;
}
 
 
std::unique_ptr<DRC_ENGINE> BOARD_INSPECTION_TOOL::makeDRCEngine( bool* aCompileError,
 bool* aCourtyardError )
{
 auto engine = std::make_unique<DRC_ENGINE>( m_frame->GetBoard(),
 &m_frame->GetBoard()->GetDesignSettings() );
 
 try
 {
 engine->InitEngine( m_frame->GetDesignRulesPath() );
 }
 catch( PARSE_ERROR& )
 {
 if( aCompileError )
 *aCompileError = true;
 }
 
 for( ZONE* zone : m_frame->GetBoard()->Zones() )
 zone->CacheBoundingBox();
 
 for( FOOTPRINT* footprint : m_frame->GetBoard()->Footprints() )
 {
 for( ZONE* zone : footprint->Zones() )
 zone->CacheBoundingBox();
 
 footprint->BuildCourtyardCaches();
 
 if( aCourtyardError && ( footprint->GetFlags() & MALFORMED_COURTYARDS ) != 0 )
 *aCourtyardError = true;
 }
 
 return engine;
}
 
 
bool isNPTHPad( BOARD_ITEM* aItem )
{
 return aItem->Type() == PCB_PAD_T
 && static_cast<PAD*>( aItem )->GetAttribute() == PAD_ATTRIB::NPTH;
}
 
 
wxString BOARD_INSPECTION_TOOL::getItemDescription( BOARD_ITEM* aItem )
{
 // Null items have no description
 if( !aItem )
 return wxString();
 
 wxString msg = aItem->GetItemDescription( m_frame, true );
 
 if( aItem->IsConnected() && !isNPTHPad( aItem ) )
 {
 BOARD_CONNECTED_ITEM* cItem = static_cast<BOARD_CONNECTED_ITEM*>( aItem );
 
 msg += wxS( " " ) + wxString::Format( _( "[netclass %s]" ),
 cItem->GetEffectiveNetClass()->GetName() );
 }
 
 return msg;
};
 
 
void BOARD_INSPECTION_TOOL::reportCompileError( REPORTER* r )
{
 r->Report( "" );
 r->Report( _( "Report incomplete: could not compile custom design rules." )
 + wxS( "&nbsp;&nbsp;" )
 + wxS( "<a href='$CUSTOM_RULES'>" ) + _( "Show design rules." ) + wxS( "</a>" ) );
}
 
 
void BOARD_INSPECTION_TOOL::reportHeader( const wxString& aTitle, BOARD_ITEM* a, REPORTER* r )
{
 r->Report( wxT( "<h7>" ) + EscapeHTML( aTitle ) + wxT( "</h7>" ) );
 r->Report( wxT( "<ul><li>" ) + EscapeHTML( getItemDescription( a ) ) + wxT( "</li></ul>" ) );
}
 
 
void BOARD_INSPECTION_TOOL::reportHeader( const wxString& aTitle, BOARD_ITEM* a, BOARD_ITEM* b,
 REPORTER* r )
{
 r->Report( wxT( "<h7>" ) + EscapeHTML( aTitle ) + wxT( "</h7>" ) );
 r->Report( wxT( "<ul><li>" ) + EscapeHTML( getItemDescription( a ) ) + wxT( "</li>" )
 + wxT( "<li>" ) + EscapeHTML( getItemDescription( b ) ) + wxT( "</li></ul>" ) );
}
 
 
void BOARD_INSPECTION_TOOL::reportHeader( const wxString& aTitle, BOARD_ITEM* a, BOARD_ITEM* b,
 PCB_LAYER_ID aLayer, REPORTER* r )
{
 wxString layerStr = _( "Layer" ) + wxS( " " ) + m_frame->GetBoard()->GetLayerName( aLayer );
 
 r->Report( wxT( "<h7>" ) + EscapeHTML( aTitle ) + wxT( "</h7>" ) );
 r->Report( wxT( "<ul><li>" ) + EscapeHTML( layerStr ) + wxT( "</li>" )
 + wxT( "<li>" ) + EscapeHTML( getItemDescription( a ) ) + wxT( "</li>" )
 + wxT( "<li>" ) + EscapeHTML( getItemDescription( b ) ) + wxT( "</li></ul>" ) );
}
 
 
wxString reportMin( PCB_BASE_FRAME* aFrame, DRC_CONSTRAINT& aConstraint )
{
 if( aConstraint.m_Value.HasMin() )
 return aFrame->StringFromValue( aConstraint.m_Value.Min(), true );
 else
 return wxT( "<i>" ) + _( "undefined" ) + wxT( "</i>" );
}
 
 
wxString reportOpt( PCB_BASE_FRAME* aFrame, DRC_CONSTRAINT& aConstraint )
{
 if( aConstraint.m_Value.HasOpt() )
 return aFrame->StringFromValue( aConstraint.m_Value.Opt(), true );
 else
 return wxT( "<i>" ) + _( "undefined" ) + wxT( "</i>" );
}
 
 
wxString reportMax( PCB_BASE_FRAME* aFrame, DRC_CONSTRAINT& aConstraint )
{
 if( aConstraint.m_Value.HasMax() )
 return aFrame->StringFromValue( aConstraint.m_Value.Max(), true );
 else
 return wxT( "<i>" ) + _( "undefined" ) + wxT( "</i>" );
}
 
 
wxString BOARD_INSPECTION_TOOL::InspectDRCErrorMenuText( const std::shared_ptr<RC_ITEM>& aDRCItem )
{
 auto menuDescription =
 [&]( const TOOL_ACTION& aAction )
 {
 wxString menuItemLabel = aAction.GetMenuLabel();
 wxMenuBar* menuBar = m_frame->GetMenuBar();
 
 for( size_t ii = 0; ii < menuBar->GetMenuCount(); ++ii )
 {
 for( wxMenuItem* menuItem : menuBar->GetMenu( ii )->GetMenuItems() )
 {
 if( menuItem->GetItemLabelText() == menuItemLabel )
 {
 wxString menuTitleLabel = menuBar->GetMenuLabelText( ii );
 
 menuTitleLabel.Replace( wxS( "&" ), wxS( "&&" ) );
 menuItemLabel.Replace( wxS( "&" ), wxS( "&&" ) );
 
 return wxString::Format( _( "Run %s > %s" ),
 menuTitleLabel,
 menuItemLabel );
 }
 }
 }
 
 return wxString::Format( _( "Run %s" ), aAction.GetFriendlyName() );
 };
 
 if( aDRCItem->GetErrorCode() == DRCE_CLEARANCE
 || aDRCItem->GetErrorCode() == DRCE_EDGE_CLEARANCE
 || aDRCItem->GetErrorCode() == DRCE_HOLE_CLEARANCE
 || aDRCItem->GetErrorCode() == DRCE_DRILLED_HOLES_TOO_CLOSE )
 {
 return menuDescription( PCB_ACTIONS::inspectClearance );
 }
 else if( aDRCItem->GetErrorCode() == DRCE_TEXT_HEIGHT
 || aDRCItem->GetErrorCode() == DRCE_TEXT_THICKNESS
 || aDRCItem->GetErrorCode() == DRCE_DIFF_PAIR_UNCOUPLED_LENGTH_TOO_LONG
 || aDRCItem->GetErrorCode() == DRCE_TRACK_WIDTH
 || aDRCItem->GetErrorCode() == DRCE_TRACK_ANGLE
 || aDRCItem->GetErrorCode() == DRCE_TRACK_SEGMENT_LENGTH
 || aDRCItem->GetErrorCode() == DRCE_VIA_DIAMETER
 || aDRCItem->GetErrorCode() == DRCE_ANNULAR_WIDTH
 || aDRCItem->GetErrorCode() == DRCE_DRILL_OUT_OF_RANGE
 || aDRCItem->GetErrorCode() == DRCE_MICROVIA_DRILL_OUT_OF_RANGE
 || aDRCItem->GetErrorCode() == DRCE_CONNECTION_WIDTH
 || aDRCItem->GetErrorCode() == DRCE_ASSERTION_FAILURE )
 {
 return menuDescription( PCB_ACTIONS::inspectConstraints );
 }
 else if( aDRCItem->GetErrorCode() == DRCE_LIB_FOOTPRINT_MISMATCH )
 {
 return menuDescription( PCB_ACTIONS::diffFootprint );
 }
 else if( aDRCItem->GetErrorCode() == DRCE_DANGLING_TRACK
 || aDRCItem->GetErrorCode() == DRCE_DANGLING_VIA )
 {
 return menuDescription( PCB_ACTIONS::cleanupTracksAndVias );
 }
 
 return wxEmptyString;
}
 
 
void BOARD_INSPECTION_TOOL::InspectDRCError( const std::shared_ptr<RC_ITEM>& aDRCItem )
{
 wxCHECK( m_frame, /* void */ );
 
 BOARD_ITEM* a = m_frame->GetBoard()->GetItem( aDRCItem->GetMainItemID() );
 BOARD_ITEM* b = m_frame->GetBoard()->GetItem( aDRCItem->GetAuxItemID() );
 BOARD_CONNECTED_ITEM* ac = dynamic_cast<BOARD_CONNECTED_ITEM*>( a );
 BOARD_CONNECTED_ITEM* bc = dynamic_cast<BOARD_CONNECTED_ITEM*>( b );
 PCB_LAYER_ID layer = m_frame->GetActiveLayer();
 
 if( aDRCItem->GetErrorCode() == DRCE_LIB_FOOTPRINT_MISMATCH )
 {
 if( FOOTPRINT* footprint = dynamic_cast<FOOTPRINT*>( a ) )
 DiffFootprint( footprint );
 
 return;
 }
 else if( aDRCItem->GetErrorCode() == DRCE_DANGLING_TRACK
 || aDRCItem->GetErrorCode() == DRCE_DANGLING_VIA )
 {
 m_toolMgr->RunAction( PCB_ACTIONS::cleanupTracksAndVias );
 return;
 }
 
 DIALOG_BOOK_REPORTER* dialog = m_frame->GetInspectDrcErrorDialog();
 wxCHECK( dialog, /* void */ );
 
 dialog->DeleteAllPages();
 
 bool compileError = false;
 bool courtyardError = false;
 std::unique_ptr<DRC_ENGINE> drcEngine = makeDRCEngine( &compileError, &courtyardError );
 
 WX_HTML_REPORT_BOX* r = nullptr;
 DRC_CONSTRAINT constraint;
 int clearance = 0;
 wxString clearanceStr;
 
 switch( aDRCItem->GetErrorCode() )
 {
 case DRCE_DIFF_PAIR_UNCOUPLED_LENGTH_TOO_LONG:
 {
 for( KIID id : aDRCItem->GetIDs() )
 {
 bc = dynamic_cast<BOARD_CONNECTED_ITEM*>( m_frame->GetBoard()->GetItem( id ) );
 
 if( ac && bc && ac->GetNetCode() != bc->GetNetCode() )
 break;
 }
 
 r = dialog->AddHTMLPage( _( "Uncoupled Length" ) );
 reportHeader( _( "Diff pair uncoupled length resolution for:" ), ac, bc, r );
 
 if( compileError )
 reportCompileError( r );
 
 constraint = drcEngine->EvalRules( MAX_UNCOUPLED_CONSTRAINT, a, b, layer, r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved max uncoupled length: %s." ),
 reportMax( m_frame, constraint ) ) );
 break;
 }
 
 case DRCE_TEXT_HEIGHT:
 r = dialog->AddHTMLPage( _( "Text Height" ) );
 reportHeader( _( "Text height resolution for:" ), a, r );
 
 if( compileError )
 reportCompileError( r );
 
 constraint = drcEngine->EvalRules( TEXT_HEIGHT_CONSTRAINT, a, b, layer, r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved height constraints: min %s; max %s." ),
 reportMin( m_frame, constraint ),
 reportMax( m_frame, constraint ) ) );
 break;
 
 case DRCE_TEXT_THICKNESS:
 r = dialog->AddHTMLPage( _( "Text Thickness" ) );
 reportHeader( _( "Text thickness resolution for:" ), a, r );
 
 if( compileError )
 reportCompileError( r );
 
 constraint = drcEngine->EvalRules( TEXT_THICKNESS_CONSTRAINT, a, b, layer, r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved thickness constraints: min %s; max %s." ),
 reportMin( m_frame, constraint ),
 reportMax( m_frame, constraint ) ) );
 break;
 
 case DRCE_TRACK_WIDTH:
 r = dialog->AddHTMLPage( _( "Track Width" ) );
 reportHeader( _( "Track width resolution for:" ), a, r );
 
 if( compileError )
 reportCompileError( r );
 
 constraint = drcEngine->EvalRules( TRACK_WIDTH_CONSTRAINT, a, b, layer, r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved width constraints: min %s; max %s." ),
 reportMin( m_frame, constraint ),
 reportMax( m_frame, constraint ) ) );
 break;
 
 case DRCE_TRACK_ANGLE:
 r = dialog->AddHTMLPage( _( "Track Angle" ) );
 reportHeader( _( "Track Angle resolution for:" ), a, r );
 
 if( compileError )
 reportCompileError( r );
 
 constraint = drcEngine->EvalRules( TRACK_ANGLE_CONSTRAINT, a, b, layer, r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved angle constraints: min %s; max %s." ),
 reportMin( m_frame, constraint ),
 reportMax( m_frame, constraint ) ) );
 break;
 
 case DRCE_TRACK_SEGMENT_LENGTH:
 r = dialog->AddHTMLPage( _( "Track Segment Length" ) );
 reportHeader( _( "Track segment length resolution for:" ), a, r );
 
 if( compileError )
 reportCompileError( r );
 
 constraint = drcEngine->EvalRules( TRACK_SEGMENT_LENGTH_CONSTRAINT, a, b, layer, r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved segment length constraints: min %s; max %s." ),
 reportMin( m_frame, constraint ),
 reportMax( m_frame, constraint ) ) );
 break;
 
 case DRCE_CONNECTION_WIDTH:
 r = dialog->AddHTMLPage( _( "Connection Width" ) );
 reportHeader( _( "Connection width resolution for:" ), a, b, r );
 
 if( compileError )
 reportCompileError( r );
 
 constraint = drcEngine->EvalRules( CONNECTION_WIDTH_CONSTRAINT, a, b, layer, r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved min connection width: %s." ),
 reportMin( m_frame, constraint ) ) );
 break;
 
 case DRCE_VIA_DIAMETER:
 r = dialog->AddHTMLPage( _( "Via Diameter" ) );
 reportHeader( _( "Via diameter resolution for:" ), a, r );
 
 if( compileError )
 reportCompileError( r );
 
 constraint = drcEngine->EvalRules( VIA_DIAMETER_CONSTRAINT, a, b, layer, r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved diameter constraints: min %s; max %s." ),
 reportMin( m_frame, constraint ),
 reportMax( m_frame, constraint ) ) );
 break;
 
 case DRCE_ANNULAR_WIDTH:
 r = dialog->AddHTMLPage( _( "Via Annulus" ) );
 reportHeader( _( "Via annular width resolution for:" ), a, r );
 
 if( compileError )
 reportCompileError( r );
 
 constraint = drcEngine->EvalRules( ANNULAR_WIDTH_CONSTRAINT, a, b, layer, r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved annular width constraints: min %s; max %s." ),
 reportMin( m_frame, constraint ),
 reportMax( m_frame, constraint ) ) );
 break;
 
 case DRCE_DRILL_OUT_OF_RANGE:
 case DRCE_MICROVIA_DRILL_OUT_OF_RANGE:
 r = dialog->AddHTMLPage( _( "Hole Size" ) );
 reportHeader( _( "Hole size resolution for:" ), a, r );
 
 if( compileError )
 reportCompileError( r );
 
 constraint = drcEngine->EvalRules( HOLE_SIZE_CONSTRAINT, a, b, layer, r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved hole size constraints: min %s; max %s." ),
 reportMin( m_frame, constraint ),
 reportMax( m_frame, constraint ) ) );
 break;
 
 case DRCE_HOLE_CLEARANCE:
 r = dialog->AddHTMLPage( _( "Hole Clearance" ) );
 reportHeader( _( "Hole clearance resolution for:" ), a, b, r );
 
 if( compileError )
 reportCompileError( r );
 
 if( ac && bc && ac->GetNetCode() == bc->GetNetCode() )
 {
 r->Report( "" );
 r->Report( _( "Items belong to the same net. Clearance is 0." ) );
 }
 else
 {
 constraint = drcEngine->EvalRules( HOLE_CLEARANCE_CONSTRAINT, a, b, layer, r );
 clearance = constraint.m_Value.Min();
 clearanceStr = m_frame->StringFromValue( clearance, true );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved min clearance: %s." ), clearanceStr ) );
 }
 
 r->Report( "" );
 r->Report( "" );
 r->Report( "" );
 reportHeader( _( "Physical hole clearance resolution for:" ), a, b, layer, r );
 
 constraint = drcEngine->EvalRules( PHYSICAL_HOLE_CLEARANCE_CONSTRAINT, a, b, layer, r );
 clearance = constraint.m_Value.Min();
 clearanceStr = m_frame->StringFromValue( clearance, true );
 
 if( !drcEngine->HasRulesForConstraintType( PHYSICAL_HOLE_CLEARANCE_CONSTRAINT ) )
 {
 r->Report( "" );
 r->Report( _( "No 'physical_hole_clearance' constraints defined." ) );
 }
 else
 {
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved min clearance: %s." ), clearanceStr ) );
 }
 
 break;
 
 case DRCE_DRILLED_HOLES_TOO_CLOSE:
 r = dialog->AddHTMLPage( _( "Hole to Hole" ) );
 reportHeader( _( "Hole-to-hole clearance resolution for:" ), a, b, r );
 
 if( compileError )
 reportCompileError( r );
 
 constraint = drcEngine->EvalRules( HOLE_TO_HOLE_CONSTRAINT, a, b, UNDEFINED_LAYER, r );
 clearance = constraint.m_Value.Min();
 clearanceStr = m_frame->StringFromValue( clearance, true );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved min clearance: %s." ), clearanceStr ) );
 break;
 
 case DRCE_EDGE_CLEARANCE:
 r = dialog->AddHTMLPage( _( "Edge Clearance" ) );
 reportHeader( _( "Edge clearance resolution for:" ), a, b, r );
 
 if( compileError )
 reportCompileError( r );
 
 constraint = drcEngine->EvalRules( EDGE_CLEARANCE_CONSTRAINT, a, b, layer, r );
 clearance = constraint.m_Value.Min();
 clearanceStr = m_frame->StringFromValue( clearance, true );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved min clearance: %s." ), clearanceStr ) );
 break;
 
 case DRCE_CLEARANCE:
 if( a->Type() == PCB_TRACE_T || a->Type() == PCB_ARC_T )
 {
 layer = a->GetLayer();
 }
 else if( b->Type() == PCB_TRACE_T || b->Type() == PCB_ARC_T )
 {
 layer = b->GetLayer();
 }
 else if( a->Type() == PCB_PAD_T
 && static_cast<PAD*>( a )->GetAttribute() == PAD_ATTRIB::SMD )
 {
 PAD* pad = static_cast<PAD*>( a );
 
 if( pad->IsOnLayer( F_Cu ) )
 layer = F_Cu;
 else
 layer = B_Cu;
 }
 else if( b->Type() == PCB_PAD_T
 && static_cast<PAD*>( a )->GetAttribute() == PAD_ATTRIB::SMD )
 {
 PAD* pad = static_cast<PAD*>( b );
 
 if( pad->IsOnLayer( F_Cu ) )
 layer = F_Cu;
 else
 layer = B_Cu;
 }
 
 r = dialog->AddHTMLPage( _( "Clearance" ) );
 reportHeader( _( "Clearance resolution for:" ), a, b, layer, r );
 
 if( compileError )
 reportCompileError( r );
 
 if( ac && bc && ac->GetNetCode() == bc->GetNetCode() )
 {
 r->Report( "" );
 r->Report( _( "Items belong to the same net. Clearance is 0." ) );
 }
 else
 {
 constraint = drcEngine->EvalRules( CLEARANCE_CONSTRAINT, a, b, layer, r );
 clearance = constraint.m_Value.Min();
 clearanceStr = m_frame->StringFromValue( clearance, true );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved min clearance: %s." ), clearanceStr ) );
 }
 
 r->Report( "" );
 r->Report( "" );
 r->Report( "" );
 reportHeader( _( "Physical clearance resolution for:" ), a, b, layer, r );
 
 constraint = drcEngine->EvalRules( PHYSICAL_CLEARANCE_CONSTRAINT, a, b, layer, r );
 clearance = constraint.m_Value.Min();
 clearanceStr = m_frame->StringFromValue( clearance, true );
 
 if( !drcEngine->HasRulesForConstraintType( PHYSICAL_CLEARANCE_CONSTRAINT ) )
 {
 r->Report( "" );
 r->Report( _( "No 'physical_clearance' constraints defined." ) );
 }
 else
 {
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved min clearance: %s." ), clearanceStr ) );
 }
 
 break;
 
 case DRCE_ASSERTION_FAILURE:
 r = dialog->AddHTMLPage( _( "Assertions" ) );
 reportHeader( _( "Assertions for:" ), a, r );
 
 if( compileError )
 reportCompileError( r );
 
 drcEngine->ProcessAssertions( a, []( const DRC_CONSTRAINT* c ){}, r );
 break;
 
 default:
 return;
 }
 
 r->Flush();
 
 dialog->Raise();
 dialog->Show( true );
}
 
 
int BOARD_INSPECTION_TOOL::InspectClearance( const TOOL_EVENT& aEvent )
{
 wxCHECK( m_frame, 0 );
 
 PCB_SELECTION_TOOL* selTool = m_toolMgr->GetTool<PCB_SELECTION_TOOL>();
 
 wxCHECK( selTool, 0 );
 
 const PCB_SELECTION& selection = selTool->GetSelection();
 
 if( selection.Size() != 2 )
 {
 m_frame->ShowInfoBarError( _( "Select two items for a clearance resolution report." ) );
 return 0;
 }
 
 if( !selection.GetItem( 0 )->IsBOARD_ITEM() || !selection.GetItem( 1 )->IsBOARD_ITEM() )
 return 0;
 
 BOARD_ITEM* a = static_cast<BOARD_ITEM*>( selection.GetItem( 0 ) );
 BOARD_ITEM* b = static_cast<BOARD_ITEM*>( selection.GetItem( 1 ) );
 
 if( a->Type() == PCB_GROUP_T )
 {
 PCB_GROUP* ag = static_cast<PCB_GROUP*>( a );
 
 if( ag->GetItems().empty() )
 {
 m_frame->ShowInfoBarError( _( "Cannot generate clearance report on empty group." ) );
 return 0;
 }
 
 a = *ag->GetItems().begin();
 }
 
 if( b->Type() == PCB_GROUP_T )
 {
 PCB_GROUP* bg = static_cast<PCB_GROUP*>( b );
 
 if( bg->GetItems().empty() )
 {
 m_frame->ShowInfoBarError( _( "Cannot generate clearance report on empty group." ) );
 return 0;
 }
 
 b = *bg->GetItems().begin();
 }
 
 // a or b could be null after group tests above.
 if( !a || !b )
 return 0;
 
 auto checkFootprint =
 [&]( FOOTPRINT* footprint ) -> BOARD_ITEM*
 {
 PAD* foundPad = nullptr;
 
 for( PAD* pad : footprint->Pads() )
 {
 if( !foundPad || pad->SameLogicalPadAs( foundPad ) )
 foundPad = pad;
 else
 return footprint;
 }
 
 if( !foundPad )
 return footprint;
 
 return foundPad;
 };
 
 if( a->Type() == PCB_FOOTPRINT_T )
 a = checkFootprint( static_cast<FOOTPRINT*>( a ) );
 
 if( b->Type() == PCB_FOOTPRINT_T )
 b = checkFootprint( static_cast<FOOTPRINT*>( b ) );
 
 // a or b could be null after footprint tests above.
 if( !a || !b )
 return 0;
 
 DIALOG_BOOK_REPORTER* dialog = m_frame->GetInspectClearanceDialog();
 
 wxCHECK( dialog, 0 );
 
 dialog->DeleteAllPages();
 
 if( a->Type() != PCB_ZONE_T && b->Type() == PCB_ZONE_T )
 std::swap( a, b );
 else if( !a->IsConnected() && b->IsConnected() )
 std::swap( a, b );
 
 WX_HTML_REPORT_BOX* r = nullptr;
 PCB_LAYER_ID active = m_frame->GetActiveLayer();
 LSET layerIntersection = a->GetLayerSet() & b->GetLayerSet();
 LSET copperIntersection = layerIntersection & LSET::AllCuMask();
 BOARD_CONNECTED_ITEM* ac = dynamic_cast<BOARD_CONNECTED_ITEM*>( a );
 BOARD_CONNECTED_ITEM* bc = dynamic_cast<BOARD_CONNECTED_ITEM*>( b );
 ZONE* zone = dynamic_cast<ZONE*>( a );
 PAD* pad = dynamic_cast<PAD*>( b );
 FOOTPRINT* aFP = dynamic_cast<FOOTPRINT*>( a );
 FOOTPRINT* bFP = dynamic_cast<FOOTPRINT*>( b );
 DRC_CONSTRAINT constraint;
 int clearance = 0;
 
 bool compileError = false;
 bool courtyardError = false;
 std::unique_ptr<DRC_ENGINE> drcEngine = makeDRCEngine( &compileError, &courtyardError );
 
 if( copperIntersection.any() && zone && pad && zone->GetNetCode() == pad->GetNetCode() )
 {
 PCB_LAYER_ID layer = UNDEFINED_LAYER;
 
 if( zone->IsOnLayer( active ) )
 layer = active;
 else if( zone->GetLayerSet().count() > 0 )
 layer = zone->GetLayerSet().Seq().front();
 
 r = dialog->AddHTMLPage( _( "Zone" ) );
 reportHeader( _( "Zone connection resolution for:" ), a, b, layer, r );
 
 constraint = drcEngine->EvalZoneConnection( pad, zone, layer, r );
 
 if( constraint.m_ZoneConnection == ZONE_CONNECTION::THERMAL )
 {
 r->Report( "" );
 r->Report( "" );
 reportHeader( _( "Thermal-relief gap resolution for:" ), a, b, layer, r );
 
 constraint = drcEngine->EvalRules( THERMAL_RELIEF_GAP_CONSTRAINT, pad, zone, layer, r );
 int gap = constraint.m_Value.Min();
 
 if( compileError )
 reportCompileError( r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved thermal relief gap: %s." ),
 m_frame->StringFromValue( gap, true ) ) );
 
 r->Report( "" );
 r->Report( "" );
 reportHeader( _( "Thermal-relief spoke width resolution for:" ), a, b, layer, r );
 
 constraint = drcEngine->EvalRules( THERMAL_SPOKE_WIDTH_CONSTRAINT, pad, zone, layer, r );
 int width = constraint.m_Value.Opt();
 
 if( compileError )
 reportCompileError( r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved spoke width: %s." ),
 m_frame->StringFromValue( width, true ) ) );
 
 r->Report( "" );
 r->Report( "" );
 reportHeader( _( "Thermal-relief min spoke count resolution for:" ), a, b, layer, r );
 
 constraint = drcEngine->EvalRules( MIN_RESOLVED_SPOKES_CONSTRAINT, pad, zone, layer, r );
 int minSpokes = constraint.m_Value.Min();
 
 if( compileError )
 reportCompileError( r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved min spoke count: %d." ),
 minSpokes ) );
 
 std::shared_ptr<CONNECTIVITY_DATA> connectivity = pad->GetBoard()->GetConnectivity();
 }
 else if( constraint.m_ZoneConnection == ZONE_CONNECTION::NONE )
 {
 r->Report( "" );
 r->Report( "" );
 reportHeader( _( "Zone clearance resolution for:" ), a, b, layer, r );
 
 clearance = zone->GetLocalClearance().value();
 r->Report( "" );
 r->Report( wxString::Format( _( "Zone clearance: %s." ),
 m_frame->StringFromValue( clearance, true ) ) );
 
 constraint = drcEngine->EvalRules( PHYSICAL_CLEARANCE_CONSTRAINT, pad, zone, layer, r );
 
 if( constraint.m_Value.Min() > clearance )
 {
 clearance = constraint.m_Value.Min();
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Overridden by larger physical clearance from %s;"
 "clearance: %s." ),
 EscapeHTML( constraint.GetName() ),
 m_frame->StringFromValue( clearance, true ) ) );
 }
 
 if( !pad->FlashLayer( layer ) )
 {
 constraint = drcEngine->EvalRules( PHYSICAL_HOLE_CLEARANCE_CONSTRAINT, pad, zone,
 layer, r );
 
 if( constraint.m_Value.Min() > clearance )
 {
 clearance = constraint.m_Value.Min();
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Overridden by larger physical hole clearance "
 "from %s; clearance: %s." ),
 EscapeHTML( constraint.GetName() ),
 m_frame->StringFromValue( clearance, true ) ) );
 }
 }
 
 if( compileError )
 reportCompileError( r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved min clearance: %s." ),
 m_frame->StringFromValue( clearance, true ) ) );
 }
 else
 {
 r->Report( "" );
 r->Report( "" );
 reportHeader( _( "Zone clearance resolution for:" ), a, b, layer, r );
 
 if( compileError )
 reportCompileError( r );
 
 // Report a 0 clearance for solid connections
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved min clearance: %s." ),
 m_frame->StringFromValue( 0, true ) ) );
 }
 
 r->Flush();
 }
 else if( copperIntersection.any() && !aFP && !bFP )
 {
 PCB_LAYER_ID layer = active;
 
 if( !copperIntersection.test( layer ) )
 layer = copperIntersection.Seq().front();
 
 r = dialog->AddHTMLPage( m_frame->GetBoard()->GetLayerName( layer ) );
 reportHeader( _( "Clearance resolution for:" ), a, b, layer, r );
 
 if( ac && bc && ac->GetNetCode() > 0 && ac->GetNetCode() == bc->GetNetCode() )
 {
 // Same nets....
 r->Report( _( "Items belong to the same net. Min clearance is 0." ) );
 }
 else
 {
 // Different nets (or one or both unconnected)....
 constraint = drcEngine->EvalRules( CLEARANCE_CONSTRAINT, a, b, layer, r );
 clearance = constraint.m_Value.Min();
 
 if( compileError )
 reportCompileError( r );
 
 r->Report( "" );
 
 if( constraint.IsNull() )
 {
 r->Report( _( "Min clearance is 0." ) );
 }
 else if( clearance < 0 )
 {
 r->Report( wxString::Format( _( "Resolved clearance: %s; clearance will not be "
 "tested." ),
 m_frame->StringFromValue( clearance, true ) ) );
 }
 else
 {
 r->Report( wxString::Format( _( "Resolved min clearance: %s." ),
 m_frame->StringFromValue( clearance, true ) ) );
 }
 }
 
 r->Flush();
 }
 
 if( ac && bc )
 {
 NETINFO_ITEM* refNet = ac->GetNet();
 wxString coupledNet;
 wxString dummy;
 
 if( DRC_ENGINE::MatchDpSuffix( refNet->GetNetname(), coupledNet, dummy )
 && bc->GetNetname() == coupledNet )
 {
 r = dialog->AddHTMLPage( _( "Diff Pair" ) );
 reportHeader( _( "Diff-pair gap resolution for:" ), ac, bc, active, r );
 
 constraint = drcEngine->EvalRules( DIFF_PAIR_GAP_CONSTRAINT, ac, bc, active, r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved gap constraints: min %s; opt %s; max %s." ),
 reportMin( m_frame, constraint ),
 reportOpt( m_frame, constraint ),
 reportMax( m_frame, constraint ) ) );
 
 r->Report( "" );
 r->Report( "" );
 r->Report( "" );
 reportHeader( _( "Diff-pair max uncoupled length resolution for:" ), ac, bc,
 active, r );
 
 if( !drcEngine->HasRulesForConstraintType( MAX_UNCOUPLED_CONSTRAINT ) )
 {
 r->Report( "" );
 r->Report( _( "No 'diff_pair_uncoupled' constraints defined." ) );
 }
 else
 {
 constraint = drcEngine->EvalRules( MAX_UNCOUPLED_CONSTRAINT, ac, bc, active, r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved max uncoupled length: %s." ),
 reportMax( m_frame, constraint ) ) );
 }
 r->Flush();
 }
 }
 
 auto isOnCorrespondingLayer=
 [&]( BOARD_ITEM* aItem, PCB_LAYER_ID aLayer, wxString* aWarning )
 {
 if( aItem->IsOnLayer( aLayer ) )
 return true;
 
 PCB_LAYER_ID correspondingMask = IsFrontLayer( aLayer ) ? F_Mask : B_Mask;
 PCB_LAYER_ID correspondingCopper = IsFrontLayer( aLayer ) ? F_Cu : B_Cu;
 
 if( aItem->IsOnLayer( aLayer ) )
 return true;
 
 if( aItem->IsOnLayer( correspondingMask ) )
 return true;
 
 if( aItem->IsTented( correspondingMask ) && aItem->IsOnLayer( correspondingCopper ) )
 {
 *aWarning = wxString::Format( _( "Note: %s is tented; clearance will only be "
 "applied to holes." ),
 getItemDescription( aItem ) );
 return true;
 }
 
 return false;
 };
 
 for( PCB_LAYER_ID layer : { F_SilkS, B_SilkS } )
 {
 wxString warning;
 
 if( ( a->IsOnLayer( layer ) && isOnCorrespondingLayer( b, layer, &warning ) )
 || ( b->IsOnLayer( layer ) && isOnCorrespondingLayer( a, layer, &warning ) ) )
 {
 r = dialog->AddHTMLPage( m_frame->GetBoard()->GetLayerName( layer ) );
 reportHeader( _( "Silkscreen clearance resolution for:" ), a, b, layer, r );
 
 constraint = drcEngine->EvalRules( SILK_CLEARANCE_CONSTRAINT, a, b, layer, r );
 clearance = constraint.m_Value.Min();
 
 if( compileError )
 reportCompileError( r );
 
 r->Report( "" );
 
 if( !warning.IsEmpty() )
 r->Report( warning );
 
 r->Report( wxString::Format( _( "Resolved min clearance: %s." ),
 m_frame->StringFromValue( clearance, true ) ) );
 
 r->Flush();
 }
 }
 
 for( PCB_LAYER_ID layer : { F_CrtYd, B_CrtYd } )
 {
 bool aCourtyard = aFP && !aFP->GetCourtyard( layer ).IsEmpty();
 bool bCourtyard = bFP && !bFP->GetCourtyard( layer ).IsEmpty();
 
 if( aCourtyard && bCourtyard )
 {
 r = dialog->AddHTMLPage( m_frame->GetBoard()->GetLayerName( layer ) );
 reportHeader( _( "Courtyard clearance resolution for:" ), a, b, layer, r );
 
 constraint = drcEngine->EvalRules( COURTYARD_CLEARANCE_CONSTRAINT, a, b, layer, r );
 clearance = constraint.m_Value.Min();
 
 if( compileError )
 reportCompileError( r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved min clearance: %s." ),
 m_frame->StringFromValue( clearance, true ) ) );
 
 r->Flush();
 }
 }
 
 if( a->HasHole() || b->HasHole() )
 {
 PCB_LAYER_ID layer = UNDEFINED_LAYER;
 bool pageAdded = false;
 
 if( a->HasHole() && b->IsOnLayer( active ) && IsCopperLayer( active ) )
 layer = active;
 else if( b->HasHole() && a->IsOnLayer( active ) && IsCopperLayer( active ) )
 layer = active;
 else if( a->HasHole() && b->IsOnCopperLayer() )
 layer = b->GetLayer();
 else if( b->HasHole() && b->IsOnCopperLayer() )
 layer = a->GetLayer();
 
 if( layer >= 0 )
 {
 if( !pageAdded )
 {
 r = dialog->AddHTMLPage( _( "Hole" ) );
 pageAdded = true;
 }
 else
 {
 r->Report( "" );
 r->Report( "" );
 r->Report( "" );
 }
 
 reportHeader( _( "Hole clearance resolution for:" ), a, b, layer, r );
 
 constraint = drcEngine->EvalRules( HOLE_CLEARANCE_CONSTRAINT, a, b, layer, r );
 clearance = constraint.m_Value.Min();
 
 if( compileError )
 reportCompileError( r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved min clearance: %s." ),
 m_frame->StringFromValue( clearance, true ) ) );
 
 r->Flush();
 }
 
 if( a->HasDrilledHole() || b->HasDrilledHole() )
 {
 if( !pageAdded )
 {
 r = dialog->AddHTMLPage( _( "Hole" ) );
 pageAdded = true;
 }
 else
 {
 r->Report( "" );
 r->Report( "" );
 r->Report( "" );
 }
 
 reportHeader( _( "Hole-to-hole clearance resolution for:" ), a, b, r );
 
 constraint = drcEngine->EvalRules( HOLE_TO_HOLE_CONSTRAINT, a, b, UNDEFINED_LAYER, r );
 clearance = constraint.m_Value.Min();
 
 if( compileError )
 reportCompileError( r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved min clearance: %s." ),
 m_frame->StringFromValue( clearance, true ) ) );
 
 r->Flush();
 }
 }
 
 for( PCB_LAYER_ID edgeLayer : { Edge_Cuts, Margin } )
 {
 PCB_LAYER_ID layer = UNDEFINED_LAYER;
 
 if( a->IsOnLayer( edgeLayer ) && b->Type() != PCB_FOOTPRINT_T )
 {
 if( b->IsOnLayer( active ) && IsCopperLayer( active ) )
 layer = active;
 else if( IsCopperLayer( b->GetLayer() ) )
 layer = b->GetLayer();
 }
 else if( b->IsOnLayer( edgeLayer ) && a->Type() != PCB_FOOTPRINT_T )
 {
 if( a->IsOnLayer( active ) && IsCopperLayer( active ) )
 layer = active;
 else if( IsCopperLayer( a->GetLayer() ) )
 layer = a->GetLayer();
 }
 
 if( layer >= 0 )
 {
 wxString layerName = m_frame->GetBoard()->GetLayerName( edgeLayer );
 r = dialog->AddHTMLPage( layerName + wxS( " " ) + _( "Clearance" ) );
 reportHeader( _( "Edge clearance resolution for:" ), a, b, layer, r );
 
 constraint = drcEngine->EvalRules( EDGE_CLEARANCE_CONSTRAINT, a, b, layer, r );
 clearance = constraint.m_Value.Min();
 
 if( compileError )
 reportCompileError( r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved min clearance: %s." ),
 m_frame->StringFromValue( clearance, true ) ) );
 
 r->Flush();
 }
 }
 
 r = dialog->AddHTMLPage( _( "Physical Clearances" ) );
 
 auto reportPhysicalClearance =
 [&]( PCB_LAYER_ID aLayer )
 {
 reportHeader( _( "Physical clearance resolution for:" ), a, b, aLayer, r );
 
 constraint = drcEngine->EvalRules( PHYSICAL_CLEARANCE_CONSTRAINT, a, b, aLayer, r );
 clearance = constraint.m_Value.Min();
 
 if( compileError )
 {
 reportCompileError( r );
 }
 else if( !drcEngine->HasRulesForConstraintType( PHYSICAL_CLEARANCE_CONSTRAINT ) )
 {
 r->Report( "" );
 r->Report( _( "No 'physical_clearance' constraints defined." ) );
 }
 else
 {
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved min clearance: %s." ),
 m_frame->StringFromValue( clearance, true ) ) );
 }
 
 r->Report( "" );
 r->Report( "" );
 r->Report( "" );
 };
 
 if( layerIntersection.any() )
 {
 PCB_LAYER_ID layer = active;
 
 if( !layerIntersection.test( layer ) )
 layer = layerIntersection.Seq().front();
 
 reportPhysicalClearance( layer );
 }
 
 if( aFP && b->IsOnLayer( Edge_Cuts ) )
 {
 if( !aFP->GetCourtyard( F_CrtYd ).IsEmpty() )
 reportPhysicalClearance( F_CrtYd );
 
 if( !aFP->GetCourtyard( B_CrtYd ).IsEmpty() )
 reportPhysicalClearance( B_CrtYd );
 }
 else if( bFP && a->IsOnLayer( Edge_Cuts ) )
 {
 if( !bFP->GetCourtyard( F_CrtYd ).IsEmpty() )
 reportPhysicalClearance( F_CrtYd );
 
 if( !bFP->GetCourtyard( B_CrtYd ).IsEmpty() )
 reportPhysicalClearance( B_CrtYd );
 }
 
 if( a->HasHole() || b->HasHole() )
 {
 PCB_LAYER_ID layer;
 
 if( a->HasHole() && b->IsOnLayer( active ) )
 layer = active;
 else if( b->HasHole() && a->IsOnLayer( active ) )
 layer = active;
 else if( a->HasHole() )
 layer = b->GetLayer();
 else
 layer = a->GetLayer();
 
 reportHeader( _( "Physical hole clearance resolution for:" ), a, b, layer, r );
 
 constraint = drcEngine->EvalRules( PHYSICAL_HOLE_CLEARANCE_CONSTRAINT, a, b, layer, r );
 clearance = constraint.m_Value.Min();
 
 if( compileError )
 {
 reportCompileError( r );
 }
 else if( !drcEngine->HasRulesForConstraintType( PHYSICAL_HOLE_CLEARANCE_CONSTRAINT ) )
 {
 r->Report( "" );
 r->Report( _( "No 'physical_hole_clearance' constraints defined." ) );
 }
 else
 {
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved min clearance: %s." ),
 m_frame->StringFromValue( clearance, true ) ) );
 }
 }
 
 r->Flush();
 
 dialog->Raise();
 dialog->Show( true );
 return 0;
}
 
 
int BOARD_INSPECTION_TOOL::InspectConstraints( const TOOL_EVENT& aEvent )
{
#define EVAL_RULES( constraint, a, b, layer, r ) drcEngine->EvalRules( constraint, a, b, layer, r )
 
 wxCHECK( m_frame, 0 );
 
 PCB_SELECTION_TOOL* selTool = m_toolMgr->GetTool<PCB_SELECTION_TOOL>();
 
 wxCHECK( selTool, 0 );
 
 const PCB_SELECTION& selection = selTool->GetSelection();
 
 if( selection.Size() != 1 )
 {
 m_frame->ShowInfoBarError( _( "Select an item for a constraints resolution report." ) );
 return 0;
 }
 
 DIALOG_BOOK_REPORTER* dialog = m_frame->GetInspectConstraintsDialog();
 
 wxCHECK( dialog, 0 );
 
 dialog->DeleteAllPages();
 
 if( !selection.GetItem( 0 )->IsBOARD_ITEM() )
 return 0;
 
 BOARD_ITEM* item = static_cast<BOARD_ITEM*>( selection.GetItem( 0 ) );
 DRC_CONSTRAINT constraint;
 
 bool compileError = false;
 bool courtyardError = false;
 std::unique_ptr<DRC_ENGINE> drcEngine = makeDRCEngine( &compileError, &courtyardError );
 
 WX_HTML_REPORT_BOX* r = nullptr;
 
 if( item->Type() == PCB_TRACE_T )
 {
 r = dialog->AddHTMLPage( _( "Track Width" ) );
 reportHeader( _( "Track width resolution for:" ), item, r );
 
 constraint = EVAL_RULES( TRACK_WIDTH_CONSTRAINT, item, nullptr, item->GetLayer(), r );
 
 if( compileError )
 reportCompileError( r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved width constraints: min %s; opt %s; max %s." ),
 reportMin( m_frame, constraint ),
 reportOpt( m_frame, constraint ),
 reportMax( m_frame, constraint ) ) );
 
 r->Flush();
 }
 
 if( item->Type() == PCB_VIA_T )
 {
 r = dialog->AddHTMLPage( _( "Via Diameter" ) );
 reportHeader( _( "Via diameter resolution for:" ), item, r );
 
 // PADSTACKS TODO: once we have padstacks we'll need to run this per-layer....
 constraint = EVAL_RULES( VIA_DIAMETER_CONSTRAINT, item, nullptr, UNDEFINED_LAYER, r );
 
 if( compileError )
 reportCompileError( r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved diameter constraints: min %s; opt %s; max %s." ),
 reportMin( m_frame, constraint ),
 reportOpt( m_frame, constraint ),
 reportMax( m_frame, constraint ) ) );
 
 r->Flush();
 
 r = dialog->AddHTMLPage( _( "Via Annular Width" ) );
 reportHeader( _( "Via annular width resolution for:" ), item, r );
 
 // PADSTACKS TODO: once we have padstacks we'll need to run this per-layer....
 constraint = EVAL_RULES( ANNULAR_WIDTH_CONSTRAINT, item, nullptr, UNDEFINED_LAYER, r );
 
 if( compileError )
 reportCompileError( r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved annular width constraints: min %s; opt %s; max %s." ),
 reportMin( m_frame, constraint ),
 reportOpt( m_frame, constraint ),
 reportMax( m_frame, constraint ) ) );
 
 r->Flush();
 }
 
 if( ( item->Type() == PCB_PAD_T && static_cast<PAD*>( item )->GetDrillSize().x > 0 )
 || item->Type() == PCB_VIA_T )
 {
 r = dialog->AddHTMLPage( _( "Hole Size" ) );
 reportHeader( _( "Hole size resolution for:" ), item, r );
 
 // PADSTACKS TODO: once we have padstacks we'll need to run this per-layer....
 constraint = EVAL_RULES( HOLE_SIZE_CONSTRAINT, item, nullptr, UNDEFINED_LAYER, r );
 
 if( compileError )
 reportCompileError( r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved hole size constraints: min %s; opt %s; max %s." ),
 reportMin( m_frame, constraint ),
 reportOpt( m_frame, constraint ),
 reportMax( m_frame, constraint ) ) );
 
 r->Flush();
 }
 
 if( item->Type() == PCB_FIELD_T || item->Type() == PCB_TEXT_T || item->Type() == PCB_TEXTBOX_T )
 {
 r = dialog->AddHTMLPage( _( "Text Size" ) );
 reportHeader( _( "Text height resolution for:" ), item, r );
 
 constraint = EVAL_RULES( TEXT_HEIGHT_CONSTRAINT, item, nullptr, UNDEFINED_LAYER, r );
 
 if( compileError )
 reportCompileError( r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved height constraints: min %s; opt %s; max %s." ),
 reportMin( m_frame, constraint ),
 reportOpt( m_frame, constraint ),
 reportMax( m_frame, constraint ) ) );
 
 r->Report( "" );
 r->Report( "" );
 r->Report( "" );
 reportHeader( _( "Text thickness resolution for:" ), item, r );
 
 constraint = EVAL_RULES( TEXT_THICKNESS_CONSTRAINT, item, nullptr, UNDEFINED_LAYER, r );
 
 if( compileError )
 reportCompileError( r );
 
 r->Report( "" );
 r->Report( wxString::Format( _( "Resolved thickness constraints: min %s; opt %s; max %s." ),
 reportMin( m_frame, constraint ),
 reportOpt( m_frame, constraint ),
 reportMax( m_frame, constraint ) ) );
 
 r->Flush();
 }
 
 r = dialog->AddHTMLPage( _( "Keepouts" ) );
 reportHeader( _( "Keepout resolution for:" ), item, r );
 
 constraint = EVAL_RULES( DISALLOW_CONSTRAINT, item, nullptr, item->GetLayer(), r );
 
 if( compileError )
 reportCompileError( r );
 
 if( courtyardError )
 {
 r->Report( "" );
 r->Report( _( "Report may be incomplete: some footprint courtyards are malformed." )
 + wxS( "&nbsp;&nbsp;" )
 + wxS( "<a href='$DRC'>" ) + _( "Run DRC for a full analysis." )
 + wxS( "</a>" ) );
 }
 
 r->Report( "" );
 
 if( constraint.m_DisallowFlags )
 r->Report( _( "Item <b>disallowed</b> at current location." ) );
 else
 r->Report( _( "Item allowed at current location." ) );
 
 r->Flush();
 
 r = dialog->AddHTMLPage( _( "Assertions" ) );
 reportHeader( _( "Assertions for:" ), item, r );
 
 if( compileError )
 reportCompileError( r );
 
 if( courtyardError )
 {
 r->Report( "" );
 r->Report( _( "Report may be incomplete: some footprint courtyards are malformed." )
 + wxS( "&nbsp;&nbsp;" )
 + wxS( "<a href='$DRC'>" ) + _( "Run DRC for a full analysis." )
 + wxS( "</a>" ) );
 }
 
 drcEngine->ProcessAssertions( item, []( const DRC_CONSTRAINT* c ){}, r );
 r->Flush();
 
 dialog->Raise();
 dialog->Show( true );
 return 0;
}
 
 
int BOARD_INSPECTION_TOOL::DiffFootprint( const TOOL_EVENT& aEvent )
{
 wxCHECK( m_frame, 0 );
 
 PCB_SELECTION_TOOL* selTool = m_toolMgr->GetTool<PCB_SELECTION_TOOL>();
 
 wxCHECK( selTool, 0 );
 
 const PCB_SELECTION& selection = selTool->RequestSelection(
 []( const VECTOR2I& aPt, GENERAL_COLLECTOR& aCollector, PCB_SELECTION_TOOL* sTool )
 {
 // Iterate from the back so we don't have to worry about removals.
 for( int i = aCollector.GetCount() - 1; i >= 0; --i )
 {
 BOARD_ITEM* item = aCollector[ i ];
 
 if( !dynamic_cast<FOOTPRINT*>( item ) )
 aCollector.Remove( item );
 }
 },
 false /* ignore locked flag */ );
 
 if( selection.Size() == 1 )
 DiffFootprint( static_cast<FOOTPRINT*>( selection.GetItem( 0 ) ) );
 else
 m_frame->ShowInfoBarError( _( "Select a footprint to diff with its library equivalent." ) );
 
 return 0;
}
 
 
int BOARD_INSPECTION_TOOL::ShowFootprintLinks( const TOOL_EVENT& aEvent )
{
 wxCHECK( m_frame, 0 );
 
 PCB_SELECTION_TOOL* selTool = m_toolMgr->GetTool<PCB_SELECTION_TOOL>();
 
 wxCHECK( selTool, 0 );
 
 const PCB_SELECTION& selection = selTool->GetSelection();
 
 if( selection.Size() != 1 || selection.Front()->Type() != PCB_FOOTPRINT_T )
 {
 m_frame->ShowInfoBarError( _( "Select a footprint for a footprint associations report." ) );
 return 0;
 }
 
 DIALOG_FOOTPRINT_ASSOCIATIONS dlg( m_frame, static_cast<FOOTPRINT*>( selection.Front() ) );
 
 dlg.ShowModal();
 
 return 0;
}
 
 
void BOARD_INSPECTION_TOOL::DiffFootprint( FOOTPRINT* aFootprint )
{
 DIALOG_BOOK_REPORTER* dialog = m_frame->GetFootprintDiffDialog();
 
 wxCHECK( dialog, /* void */ );
 
 dialog->DeleteAllPages();
 
 LIB_ID fpID = aFootprint->GetFPID();
 wxString libName = fpID.GetLibNickname();
 wxString fpName = fpID.GetLibItemName();
 WX_HTML_REPORT_BOX* r = nullptr;
 
 r = dialog->AddHTMLPage( _( "Summary" ) );
 
 r->Report( wxS( "<h7>" ) + _( "Board vs library diff for:" ) + wxS( "</h7>" ) );
 r->Report( wxS( "<ul><li>" ) + EscapeHTML( getItemDescription( aFootprint ) ) + wxS( "</li>" )
 + wxS( "<li>" ) + _( "Library: " ) + EscapeHTML( libName ) + wxS( "</li>" )
 + wxS( "<li>" ) + _( "Library item: " ) + EscapeHTML( fpName ) + wxS( "</li></ul>" ) );
 
 r->Report( "" );
 
 PROJECT* project = aFootprint->GetBoard()->GetProject();
 FP_LIB_TABLE* libTable = PROJECT_PCB::PcbFootprintLibs( project );
 const LIB_TABLE_ROW* libTableRow = nullptr;
 
 try
 {
 libTableRow = libTable->FindRow( libName );
 }
 catch( const IO_ERROR& )
 {
 }
 
 if( !libTableRow )
 {
 r->Report( _( "The library is not included in the current configuration." )
 + wxS( "&nbsp;&nbsp;&nbsp" )
 + wxS( "<a href='$CONFIG'>" ) + _( "Manage Footprint Libraries" )
 + wxS( "</a>" ) );
 
 }
 else if( !libTable->HasLibrary( libName, true ) )
 {
 r->Report( _( "The library is not enabled in the current configuration." )
 + wxS( "&nbsp;&nbsp;&nbsp" )
 + wxS( "<a href='$CONFIG'>" ) + _( "Manage Footprint Libraries" )
 + wxS( "</a>" ) );
 
 }
 else
 {
 std::shared_ptr<FOOTPRINT> libFootprint;
 
 try
 {
 libFootprint.reset( libTable->FootprintLoad( libName, fpName, true ) );
 }
 catch( const IO_ERROR& )
 {
 }
 
 if( !libFootprint )
 {
 r->Report( wxString::Format( _( "The library no longer contains the item %s." ),
 fpName) );
 }
 else
 {
 if( !aFootprint->FootprintNeedsUpdate( libFootprint.get(), 0, r ) )
 r->Report( _( "No relevant differences detected." ) );
 
 wxPanel* panel = dialog->AddBlankPage( _( "Visual" ) );
 FOOTPRINT_DIFF_WIDGET* diff = constructDiffPanel( panel );
 
 diff->DisplayDiff( aFootprint, libFootprint );
 }
 }
 
 r->Flush();
 
 dialog->Raise();
 dialog->Show( true );
}
 
 
FOOTPRINT_DIFF_WIDGET* BOARD_INSPECTION_TOOL::constructDiffPanel( wxPanel* aParentPanel )
{
 wxBoxSizer* sizer = new wxBoxSizer( wxVERTICAL );
 
 FOOTPRINT_DIFF_WIDGET* diffWidget = new FOOTPRINT_DIFF_WIDGET( aParentPanel, m_frame->Kiway() );
 
 sizer->Add( diffWidget, 1, wxEXPAND | wxALL, 5 );
 aParentPanel->SetSizer( sizer );
 aParentPanel->Layout();
 
 return diffWidget;
}
 
 
int BOARD_INSPECTION_TOOL::HighlightItem( const TOOL_EVENT& aEvent )
{
 BOARD_ITEM* item = aEvent.Parameter<BOARD_ITEM*>();
 
 m_frame->m_probingSchToPcb = true; // recursion guard
 {
 m_toolMgr->RunAction( PCB_ACTIONS::selectionClear );
 
 if( item )
 m_toolMgr->RunAction<EDA_ITEM*>( PCB_ACTIONS::selectItem, item );
 }
 m_frame->m_probingSchToPcb = false;
 
 bool request3DviewRedraw = frame()->GetPcbNewSettings()->m_Display.m_Live3DRefresh;
 
 if( item && item->Type() != PCB_FOOTPRINT_T )
 request3DviewRedraw = false;
 
 // Update 3D viewer highlighting
 if( request3DviewRedraw )
 m_frame->Update3DView( false, true );
 
 return 0;
}
 
 
 bool BOARD_INSPECTION_TOOL::highlightNet( const VECTOR2D& aPosition, bool aUseSelection )
{
 BOARD* board = static_cast<BOARD*>( m_toolMgr->GetModel() );
 KIGFX::RENDER_SETTINGS* settings = getView()->GetPainter()->GetSettings();
 PCB_SELECTION_TOOL* selectionTool = m_toolMgr->GetTool<PCB_SELECTION_TOOL>();
 
 int net = -1;
 bool enableHighlight = false;
 
 if( aUseSelection )
 {
 const PCB_SELECTION& selection = selectionTool->GetSelection();
 std::set<int> netcodes;
 
 for( EDA_ITEM* item : selection )
 {
 if( BOARD_CONNECTED_ITEM* ci = dynamic_cast<BOARD_CONNECTED_ITEM*>( item ) )
 netcodes.insert( ci->GetNetCode() );
 }
 
 enableHighlight = !netcodes.empty();
 
 if( enableHighlight && netcodes.size() > 1 )
 {
 // If we are doing a multi-highlight, cross-probing back and other stuff is not
 // yet supported
 settings->SetHighlight( netcodes );
 board->ResetNetHighLight();
 
 for( int multiNet : netcodes )
 board->SetHighLightNet( multiNet, true );
 
 board->HighLightON();
 m_toolMgr->GetView()->UpdateAllLayersColor();
 m_currentlyHighlighted = netcodes;
 return true;
 }
 else if( enableHighlight )
 {
 net = *netcodes.begin();
 }
 }
 
 // If we didn't get a net to highlight from the selection, use the cursor
 if( net < 0 )
 {
 GENERAL_COLLECTORS_GUIDE guide = m_frame->GetCollectorsGuide();
 guide.SetIgnoreZoneFills( false );
 
 PCB_LAYER_ID activeLayer = static_cast<PCB_LAYER_ID>( view()->GetTopLayer() );
 guide.SetPreferredLayer( activeLayer );
 
 GENERAL_COLLECTOR collector;
 collector.Collect( board, { PCB_PAD_T, PCB_VIA_T, PCB_TRACE_T, PCB_ARC_T, PCB_SHAPE_T }, aPosition,
 guide );
 
 if( collector.GetCount() == 0 )
 collector.Collect( board, { PCB_ZONE_T }, aPosition, guide );
 
 // Apply the active selection filter, except we want to allow picking locked items for
 // highlighting even if the user has disabled them for selection
 PCB_SELECTION_FILTER_OPTIONS& filter = selectionTool->GetFilter();
 
 bool saved = filter.lockedItems;
 filter.lockedItems = true;
 
 selectionTool->FilterCollectedItems( collector, true );
 
 filter.lockedItems = saved;
 
 // Clear the previous highlight
 //m_frame->SendMessageToEESCHEMA( nullptr );
 
 bool highContrast = settings->GetHighContrast();
 PCB_LAYER_ID contrastLayer = settings->GetPrimaryHighContrastLayer();
 
 for( int i = collector.GetCount() - 1; i >= 0; i-- )
 {
 LSET itemLayers = collector[i]->GetLayerSet();
 
 if( ( itemLayers & LSET::AllCuMask() ).none() ||
 ( highContrast && !itemLayers.Contains( contrastLayer ) ) )
 {
 collector.Remove( i );
 continue;
 }
 }
 
 enableHighlight = ( collector.GetCount() > 0 );
 
 // Obtain net code for the clicked item
 if( enableHighlight )
 {
 BOARD_CONNECTED_ITEM* targetItem = static_cast<BOARD_CONNECTED_ITEM*>( collector[0] );
 
 if( targetItem->Type() == PCB_PAD_T )
 m_frame->SendCrossProbeItem( targetItem );
 
 net = targetItem->GetNetCode();
 }
 }
 
 const std::set<int>& netcodes = settings->GetHighlightNetCodes();
 
 // Toggle highlight when the same net was picked
 if( !aUseSelection && netcodes.size() == 1 && netcodes.contains( net ) )
 enableHighlight = !settings->IsHighlightEnabled();
 
 if( enableHighlight != settings->IsHighlightEnabled() || !netcodes.count( net ) )
 {
 if( !netcodes.empty() )
 m_lastHighlighted = netcodes;
 
 settings->SetHighlight( enableHighlight, net );
 m_toolMgr->GetView()->UpdateAllLayersColor();
 }
 
 // Store the highlighted netcode in the current board (for dialogs for instance)
 if( enableHighlight && net >= 0 )
 {
 m_currentlyHighlighted = netcodes;
 board->SetHighLightNet( net );
 board->HighLightON();
 
 NETINFO_ITEM* netinfo = board->FindNet( net );
 
 if( netinfo )
 {
 std::vector<MSG_PANEL_ITEM> items;
 netinfo->GetMsgPanelInfo( m_frame, items );
 m_frame->SetMsgPanel( items );
 m_frame->SendCrossProbeNetName( netinfo->GetNetname() );
 }
 }
 else
 {
 m_currentlyHighlighted.clear();
 board->ResetNetHighLight();
 m_frame->SetMsgPanel( board );
 m_frame->SendCrossProbeNetName( "" );
 }
 
 return true;
}
 
 
int BOARD_INSPECTION_TOOL::HighlightNet( const TOOL_EVENT& aEvent )
{
 int netcode = aEvent.Parameter<int>();
 KIGFX::RENDER_SETTINGS* settings = m_toolMgr->GetView()->GetPainter()->GetSettings();
 const std::set<int>& highlighted = settings->GetHighlightNetCodes();
 
 if( netcode > 0 )
 {
 m_lastHighlighted = highlighted;
 settings->SetHighlight( true, netcode );
 m_toolMgr->GetView()->UpdateAllLayersColor();
 m_currentlyHighlighted.clear();
 m_currentlyHighlighted.insert( netcode );
 }
 else if( aEvent.IsAction( &PCB_ACTIONS::highlightNetSelection ) )
 {
 // Highlight selection (cursor position will be ignored)
 highlightNet( getViewControls()->GetMousePosition(), true );
 }
 else if( aEvent.IsAction( &PCB_ACTIONS::toggleLastNetHighlight ) )
 {
 std::set<int> temp = highlighted;
 settings->SetHighlight( m_lastHighlighted );
 m_toolMgr->GetView()->UpdateAllLayersColor();
 m_currentlyHighlighted = m_lastHighlighted;
 m_lastHighlighted = std::move( temp );
 }
 else if( aEvent.IsAction( &PCB_ACTIONS::toggleNetHighlight ) )
 {
 bool turnOn = highlighted.empty() && !m_currentlyHighlighted.empty();
 settings->SetHighlight( m_currentlyHighlighted, turnOn );
 m_toolMgr->GetView()->UpdateAllLayersColor();
 }
 else // Highlight the net belonging to the item under the cursor
 {
 highlightNet( getViewControls()->GetMousePosition(), false );
 }
 
 return 0;
}
 
 
int BOARD_INSPECTION_TOOL::ClearHighlight( const TOOL_EVENT& aEvent )
{
 BOARD* board = static_cast<BOARD*>( m_toolMgr->GetModel() );
 KIGFX::RENDER_SETTINGS* settings = m_toolMgr->GetView()->GetPainter()->GetSettings();
 
 m_currentlyHighlighted.clear();
 m_lastHighlighted.clear();
 
 board->ResetNetHighLight();
 settings->SetHighlight( false );
 m_toolMgr->GetView()->UpdateAllLayersColor();
 m_frame->SetMsgPanel( board );
 m_frame->SendCrossProbeNetName( "" );
 return 0;
}
 
 
int BOARD_INSPECTION_TOOL::LocalRatsnestTool( const TOOL_EVENT& aEvent )
{
 PCB_PICKER_TOOL* picker = m_toolMgr->GetTool<PCB_PICKER_TOOL>();
 BOARD* board = getModel<BOARD>();
 
 // Deactivate other tools; particularly important if another PICKER is currently running
 Activate();
 
 picker->SetCursor( KICURSOR::BULLSEYE );
 
 picker->SetClickHandler(
 [this, board]( const VECTOR2D& pt ) -> bool
 {
 PCB_SELECTION_TOOL* selectionTool = m_toolMgr->GetTool<PCB_SELECTION_TOOL>();
 
 m_toolMgr->RunAction( PCB_ACTIONS::selectionClear );
 m_toolMgr->RunAction<CLIENT_SELECTION_FILTER>( PCB_ACTIONS::selectionCursor,
 EDIT_TOOL::PadFilter );
 
 PCB_SELECTION& selection = selectionTool->GetSelection();
 
 if( selection.Empty() )
 {
 m_toolMgr->RunAction<CLIENT_SELECTION_FILTER>( PCB_ACTIONS::selectionCursor,
 EDIT_TOOL::FootprintFilter );
 selection = selectionTool->GetSelection();
 }
 
 if( selection.Empty() )
 {
 // Clear the previous local ratsnest if we click off all items
 for( FOOTPRINT* fp : board->Footprints() )
 {
 for( PAD* pad : fp->Pads() )
 pad->SetLocalRatsnestVisible( displayOptions().m_ShowGlobalRatsnest );
 }
 }
 else
 {
 for( EDA_ITEM* item : selection )
 {
 if( PAD* pad = dyn_cast<PAD*>( item) )
 {
 pad->SetLocalRatsnestVisible( !pad->GetLocalRatsnestVisible() );
 }
 else if( FOOTPRINT* fp = dyn_cast<FOOTPRINT*>( item) )
 {
 if( !fp->Pads().empty() )
 {
 bool enable = !fp->Pads()[0]->GetLocalRatsnestVisible();
 
 for( PAD* childPad : fp->Pads() )
 childPad->SetLocalRatsnestVisible( enable );
 }
 }
 }
 }
 
 m_toolMgr->GetView()->MarkTargetDirty( KIGFX::TARGET_OVERLAY );
 
 return true;
 } );
 
 picker->SetFinalizeHandler(
 [this, board]( int aCondition )
 {
 if( aCondition != PCB_PICKER_TOOL::END_ACTIVATE )
 {
 for( FOOTPRINT* fp : board->Footprints() )
 {
 for( PAD* pad : fp->Pads() )
 pad->SetLocalRatsnestVisible( displayOptions().m_ShowGlobalRatsnest );
 }
 }
 } );
 
 m_toolMgr->RunAction( ACTIONS::pickerTool, &aEvent );
 
 return 0;
}
 
 
int BOARD_INSPECTION_TOOL::UpdateLocalRatsnest( const TOOL_EVENT& aEvent )
{
 VECTOR2I delta = aEvent.Parameter<VECTOR2I>();
 
 if( delta == VECTOR2I() )
 {
 // We can delete the existing map to force a recalculation
 delete m_dynamicData;
 m_dynamicData = nullptr;
 }
 
 auto selectionTool = m_toolMgr->GetTool<PCB_SELECTION_TOOL>();
 auto& selection = selectionTool->GetSelection();
 auto connectivity = getModel<BOARD>()->GetConnectivity();
 
 if( selection.Empty() )
 {
 connectivity->ClearLocalRatsnest();
 delete m_dynamicData;
 m_dynamicData = nullptr;
 }
 else
 {
 calculateSelectionRatsnest( delta );
 }
 
 return 0;
}
 
 
int BOARD_INSPECTION_TOOL::HideLocalRatsnest( const TOOL_EVENT& aEvent )
{
 getModel<BOARD>()->GetConnectivity()->ClearLocalRatsnest();
 delete m_dynamicData;
 m_dynamicData = nullptr;
 
 return 0;
}
 
 
void BOARD_INSPECTION_TOOL::calculateSelectionRatsnest( const VECTOR2I& aDelta )
{
 PCB_SELECTION_TOOL* selectionTool = m_toolMgr->GetTool<PCB_SELECTION_TOOL>();
 SELECTION& selection = selectionTool->GetSelection();
 std::shared_ptr<CONNECTIVITY_DATA> connectivity = board()->GetConnectivity();
 std::vector<BOARD_ITEM*> items;
 std::deque<EDA_ITEM*> queued_items( selection.begin(), selection.end() );
 
 for( std::size_t i = 0; i < queued_items.size(); ++i )
 {
 if( !queued_items[i]->IsBOARD_ITEM() )
 continue;
 
 BOARD_ITEM* item = static_cast<BOARD_ITEM*>( queued_items[i] );
 
 wxCHECK2( item, continue );
 
 if( item->Type() == PCB_FOOTPRINT_T )
 {
 for( PAD* pad : static_cast<FOOTPRINT*>( item )->Pads() )
 {
 if( pad->GetLocalRatsnestVisible() || displayOptions().m_ShowModuleRatsnest )
 items.push_back( pad );
 }
 }
 else if( item->Type() == PCB_GROUP_T || item->Type() == PCB_GENERATOR_T )
 {
 item->RunOnDescendants( [ &queued_items ]( BOARD_ITEM *aItem )
 {
 queued_items.push_back( aItem );
 } );
 }
 else if( BOARD_CONNECTED_ITEM* boardItem = dyn_cast<BOARD_CONNECTED_ITEM*>( item ) )
 {
 if( boardItem->GetLocalRatsnestVisible() || displayOptions().m_ShowModuleRatsnest )
 items.push_back( boardItem );
 }
 }
 
 if( items.empty() || std::none_of( items.begin(), items.end(),
 []( const BOARD_ITEM* aItem )
 {
 return( aItem->Type() == PCB_TRACE_T
 || aItem->Type() == PCB_PAD_T
 || aItem->Type() == PCB_ARC_T
 || aItem->Type() == PCB_ZONE_T
 || aItem->Type() == PCB_FOOTPRINT_T
 || aItem->Type() == PCB_VIA_T
 || aItem->Type() == PCB_SHAPE_T );
 } ) )
 {
 return;
 }
 
 if( !m_dynamicData )
 {
 m_dynamicData = new CONNECTIVITY_DATA( board()->GetConnectivity(), items, true );
 connectivity->BlockRatsnestItems( items );
 }
 else
 {
 m_dynamicData->Move( aDelta );
 }
 
 connectivity->ComputeLocalRatsnest( items, m_dynamicData );
}
 
 
int BOARD_INSPECTION_TOOL::HideNetInRatsnest( const TOOL_EVENT& aEvent )
{
 doHideRatsnestNet( aEvent.Parameter<int>(), true );
 return 0;
}
 
 
int BOARD_INSPECTION_TOOL::ShowNetInRatsnest( const TOOL_EVENT& aEvent )
{
 doHideRatsnestNet( aEvent.Parameter<int>(), false );
 return 0;
}
 
 
void BOARD_INSPECTION_TOOL::doHideRatsnestNet( int aNetCode, bool aHide )
{
 KIGFX::PCB_RENDER_SETTINGS* rs = static_cast<KIGFX::PCB_RENDER_SETTINGS*>(
 m_toolMgr->GetView()->GetPainter()->GetSettings() );
 
 PCB_SELECTION_TOOL* selectionTool = m_toolMgr->GetTool<PCB_SELECTION_TOOL>();
 SELECTION& selection = selectionTool->GetSelection();
 
 if( aNetCode <= 0 && !selection.Empty() )
 {
 for( EDA_ITEM* item : selection )
 {
 if( BOARD_CONNECTED_ITEM* bci = dynamic_cast<BOARD_CONNECTED_ITEM*>( item ) )
 {
 if( bci->GetNetCode() > 0 )
 doHideRatsnestNet( bci->GetNetCode(), aHide );
 }
 }
 
 return;
 }
 
 if( aHide )
 rs->GetHiddenNets().insert( aNetCode );
 else
 rs->GetHiddenNets().erase( aNetCode );
 
 if( !m_frame->GetAppearancePanel()->IsTogglingNetclassRatsnestVisibility() )
 {
 m_frame->GetCanvas()->RedrawRatsnest();
 m_frame->GetCanvas()->Refresh();
 
 m_frame->GetAppearancePanel()->OnNetVisibilityChanged( aNetCode, !aHide );
 }
}
 
 
void BOARD_INSPECTION_TOOL::setTransitions()
{
 Go( &BOARD_INSPECTION_TOOL::LocalRatsnestTool, PCB_ACTIONS::localRatsnestTool.MakeEvent() );
 Go( &BOARD_INSPECTION_TOOL::HideLocalRatsnest, PCB_ACTIONS::hideLocalRatsnest.MakeEvent() );
 Go( &BOARD_INSPECTION_TOOL::UpdateLocalRatsnest, PCB_ACTIONS::updateLocalRatsnest.MakeEvent() );
 
 Go( &BOARD_INSPECTION_TOOL::ShowBoardStatistics, PCB_ACTIONS::boardStatistics.MakeEvent() );
 Go( &BOARD_INSPECTION_TOOL::InspectClearance, PCB_ACTIONS::inspectClearance.MakeEvent() );
 Go( &BOARD_INSPECTION_TOOL::InspectConstraints, PCB_ACTIONS::inspectConstraints.MakeEvent() );
 Go( &BOARD_INSPECTION_TOOL::DiffFootprint, PCB_ACTIONS::diffFootprint.MakeEvent() );
 Go( &BOARD_INSPECTION_TOOL::ShowFootprintLinks, PCB_ACTIONS::showFootprintAssociations.MakeEvent() );
 
 Go( &BOARD_INSPECTION_TOOL::HighlightNet, PCB_ACTIONS::highlightNet.MakeEvent() );
 Go( &BOARD_INSPECTION_TOOL::HighlightNet, PCB_ACTIONS::highlightNetSelection.MakeEvent() );
 Go( &BOARD_INSPECTION_TOOL::HighlightNet, PCB_ACTIONS::toggleLastNetHighlight.MakeEvent() );
 Go( &BOARD_INSPECTION_TOOL::ClearHighlight, PCB_ACTIONS::clearHighlight.MakeEvent() );
 Go( &BOARD_INSPECTION_TOOL::HighlightNet, PCB_ACTIONS::toggleNetHighlight.MakeEvent() );
 Go( &BOARD_INSPECTION_TOOL::HighlightItem, PCB_ACTIONS::highlightItem.MakeEvent() );
 
 Go( &BOARD_INSPECTION_TOOL::HideNetInRatsnest, PCB_ACTIONS::hideNetInRatsnest.MakeEvent() );
 Go( &BOARD_INSPECTION_TOOL::ShowNetInRatsnest, PCB_ACTIONS::showNetInRatsnest.MakeEvent() );
}