simulator_frame.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2016-2023 CERN
 * Copyright (C) 2016-2023 KiCad Developers, see AUTHORS.txt for contributors.
 * @author Tomasz Wlostowski <[email protected]>
 * @author Maciej Suminski <[email protected]>
 *
 * 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 3
 * 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:
 * https://www.gnu.org/licenses/gpl-3.0.html
 * or you may search the http://www.gnu.org website for the version 3 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */
 
#include <wx/debug.h>
 
// For some obscure reason, needed on msys2 with some wxWidgets versions (3.0) to avoid
// undefined symbol at link stage (due to use of #include <pegtl.hpp>)
// Should not create issues on other platforms
#include <wx/menu.h>
 
#include <project/project_file.h>
#include <sch_edit_frame.h>
#include <kiway.h>
#include <confirm.h>
#include <bitmaps.h>
#include <wildcards_and_files_ext.h>
#include <widgets/tuner_slider.h>
#include <widgets/grid_color_swatch_helpers.h>
#include <widgets/wx_grid.h>
#include <tool/tool_manager.h>
#include <tool/tool_dispatcher.h>
#include <tool/action_manager.h>
#include <tool/action_toolbar.h>
#include <tool/common_control.h>
#include <tools/simulator_control.h>
#include <tools/ee_actions.h>
#include <string_utils.h>
#include <pgm_base.h>
#include "ngspice.h"
#include <sim/simulator_frame.h>
#include <sim/simulator_frame_ui.h>
#include <sim/sim_plot_tab.h>
#include <sim/spice_simulator.h>
#include <sim/simulator_reporter.h>
#include <eeschema_settings.h>
#include <advanced_config.h>
 
#include <memory>
 
 
class SIM_THREAD_REPORTER : public SIMULATOR_REPORTER
{
public:
 SIM_THREAD_REPORTER( SIMULATOR_FRAME* aParent ) :
 m_parent( aParent )
 {
 }
 
 REPORTER& Report( const wxString& aText, SEVERITY aSeverity = RPT_SEVERITY_UNDEFINED ) override
 {
 wxCommandEvent* event = new wxCommandEvent( EVT_SIM_REPORT );
 event->SetString( aText );
 wxQueueEvent( m_parent, event );
 return *this;
 }
 
 bool HasMessage() const override
 {
 return false; // Technically "indeterminate" rather than false.
 }
 
 void OnSimStateChange( SIMULATOR* aObject, SIM_STATE aNewState ) override
 {
 wxCommandEvent* event = nullptr;
 
 switch( aNewState )
 {
 case SIM_IDLE: event = new wxCommandEvent( EVT_SIM_FINISHED ); break;
 case SIM_RUNNING: event = new wxCommandEvent( EVT_SIM_STARTED ); break;
 default: wxFAIL; return;
 }
 
 wxQueueEvent( m_parent, event );
 }
 
private:
 SIMULATOR_FRAME* m_parent;
};
 
 
BEGIN_EVENT_TABLE( SIMULATOR_FRAME, KIWAY_PLAYER )
 EVT_MENU( wxID_EXIT, SIMULATOR_FRAME::onExit )
 EVT_MENU( wxID_CLOSE, SIMULATOR_FRAME::onExit )
END_EVENT_TABLE()
 
 
SIMULATOR_FRAME::SIMULATOR_FRAME( KIWAY* aKiway, wxWindow* aParent ) :
 KIWAY_PLAYER( aKiway, aParent, FRAME_SIMULATOR, _( "Simulator" ), wxDefaultPosition,
 wxDefaultSize, wxDEFAULT_FRAME_STYLE, wxT( "simulator" ), unityScale ),
 m_schematicFrame( nullptr ),
 m_toolBar( nullptr ),
 m_ui( nullptr ),
 m_simFinished( false ),
 m_workbookModified( false )
{
 m_schematicFrame = (SCH_EDIT_FRAME*) Kiway().Player( FRAME_SCH, false );
 wxASSERT( m_schematicFrame );
 
 // Give an icon
 wxIcon icon;
 icon.CopyFromBitmap( KiBitmap( BITMAPS::simulator ) );
 SetIcon( icon );
 
 wxBoxSizer* mainSizer = new wxBoxSizer( wxVERTICAL );
 SetSizer( mainSizer );
 
 m_infoBar = new WX_INFOBAR( this );
 mainSizer->Add( m_infoBar, 0, wxEXPAND, 0 );
 
 m_toolBar = new ACTION_TOOLBAR( this, wxID_ANY, wxDefaultPosition, wxDefaultSize,
 wxAUI_TB_DEFAULT_STYLE|wxAUI_TB_HORZ_LAYOUT|wxAUI_TB_PLAIN_BACKGROUND );
 m_toolBar->Realize();
 mainSizer->Add( m_toolBar, 0, wxEXPAND, 5 );
 
 m_ui = new SIMULATOR_FRAME_UI( this, m_schematicFrame );
 mainSizer->Add( m_ui, 1, wxEXPAND, 5 );
 
 m_simulator = SIMULATOR::CreateInstance( "ngspice" );
 wxASSERT( m_simulator );
 
 LoadSettings( config() );
 
 NGSPICE_SETTINGS* settings = dynamic_cast<NGSPICE_SETTINGS*>( m_simulator->Settings().get() );
 
 wxCHECK2( settings, /* do nothing in release builds*/ );
 
 if( settings && settings->GetWorkbookFilename().IsEmpty() )
 settings->SetCompatibilityMode( NGSPICE_COMPATIBILITY_MODE::LT_PSPICE );
 
 m_simulator->Init();
 
 m_reporter = new SIM_THREAD_REPORTER( this );
 m_simulator->SetReporter( m_reporter );
 
 m_circuitModel = std::make_shared<SPICE_CIRCUIT_MODEL>( &m_schematicFrame->Schematic(), this );
 
 setupTools();
 setupUIConditions();
 
 ReCreateHToolbar();
 ReCreateMenuBar();
 
 Bind( wxEVT_COMMAND_MENU_SELECTED, wxCommandEventHandler( SIMULATOR_FRAME::onExit ), this,
 wxID_EXIT );
 
 Bind( EVT_SIM_UPDATE, &SIMULATOR_FRAME::onUpdateSim, this );
 Bind( EVT_SIM_REPORT, &SIMULATOR_FRAME::onSimReport, this );
 Bind( EVT_SIM_STARTED, &SIMULATOR_FRAME::onSimStarted, this );
 Bind( EVT_SIM_FINISHED, &SIMULATOR_FRAME::onSimFinished, this );
 
 // Ensure new items are taken in account by sizers:
 Layout();
 
 // resize the subwindows size. At least on Windows, calling wxSafeYield before
 // resizing the subwindows forces the wxSplitWindows size events automatically generated
 // by wxWidgets to be executed before our resize code.
 // Otherwise, the changes made by setSubWindowsSashSize are overwritten by one these
 // events
 wxSafeYield();
 m_ui->SetSubWindowsSashSize();
 
 // Ensure the window is on top
 Raise();
 
 m_ui->InitWorkbook();
 UpdateTitle();
}
 
 
SIMULATOR_FRAME::~SIMULATOR_FRAME()
{
 NULL_REPORTER devnull;
 
 m_simulator->Attach( nullptr, wxEmptyString, 0, devnull );
 m_simulator->SetReporter( nullptr );
 delete m_reporter;
}
 
 
void SIMULATOR_FRAME::setupTools()
{
 // Create the manager
 m_toolManager = new TOOL_MANAGER;
 m_toolManager->SetEnvironment( nullptr, nullptr, nullptr, config(), this );
 
 m_toolDispatcher = new TOOL_DISPATCHER( m_toolManager );
 
 // Attach the events to the tool dispatcher
 Bind( wxEVT_CHAR, &TOOL_DISPATCHER::DispatchWxEvent, m_toolDispatcher );
 Bind( wxEVT_CHAR_HOOK, &TOOL_DISPATCHER::DispatchWxEvent, m_toolDispatcher );
 
 // Register tools
 m_toolManager->RegisterTool( new COMMON_CONTROL );
 m_toolManager->RegisterTool( new SIMULATOR_CONTROL );
 m_toolManager->InitTools();
}
 
 
void SIMULATOR_FRAME::ShowChangedLanguage()
{
 EDA_BASE_FRAME::ShowChangedLanguage();
 
 UpdateTitle();
 
 m_ui->ShowChangedLanguage();
}
 
 
void SIMULATOR_FRAME::LoadSettings( APP_SETTINGS_BASE* aCfg )
{
 EESCHEMA_SETTINGS* cfg = dynamic_cast<EESCHEMA_SETTINGS*>( aCfg );
 wxASSERT( cfg );
 
 if( cfg )
 {
 EDA_BASE_FRAME::LoadSettings( cfg );
 m_ui->LoadSettings( cfg );
 }
 
 PROJECT_FILE& project = Prj().GetProjectFile();
 
 NGSPICE* currentSim = dynamic_cast<NGSPICE*>( m_simulator.get() );
 
 if( currentSim )
 m_simulator->Settings() = project.m_SchematicSettings->m_NgspiceSettings;
}
 
 
void SIMULATOR_FRAME::SaveSettings( APP_SETTINGS_BASE* aCfg )
{
 EESCHEMA_SETTINGS* cfg = dynamic_cast<EESCHEMA_SETTINGS*>( aCfg );
 wxASSERT( cfg );
 
 if( cfg )
 {
 EDA_BASE_FRAME::SaveSettings( cfg );
 m_ui->SaveSettings( cfg );
 }
 
 PROJECT_FILE& project = Prj().GetProjectFile();
 
 if( project.m_SchematicSettings )
 {
 bool modified = project.m_SchematicSettings->m_NgspiceSettings->SaveToFile();
 
 if( m_schematicFrame && modified )
 m_schematicFrame->OnModify();
 }
}
 
 
WINDOW_SETTINGS* SIMULATOR_FRAME::GetWindowSettings( APP_SETTINGS_BASE* aCfg )
{
 EESCHEMA_SETTINGS* cfg = dynamic_cast<EESCHEMA_SETTINGS*>( aCfg );
 wxASSERT( cfg );
 
 return cfg ? &cfg->m_Simulator.window : nullptr;
}
 
 
wxString SIMULATOR_FRAME::GetCurrentSimCommand() const
{
 if( m_ui->GetCurrentSimTab() )
 return m_ui->GetCurrentSimTab()->GetSimCommand();
 else
 return m_circuitModel->GetSchTextSimCommand();
}
 
 
SIM_TYPE SIMULATOR_FRAME::GetCurrentSimType() const
{
 return SPICE_CIRCUIT_MODEL::CommandToSimType( GetCurrentSimCommand() );
}
 
 
int SIMULATOR_FRAME::GetCurrentOptions() const
{
 if( SIM_TAB* simTab = m_ui->GetCurrentSimTab() )
 return simTab->GetSimOptions();
 else
 return NETLIST_EXPORTER_SPICE::OPTION_DEFAULT_FLAGS;
}
 
 
void SIMULATOR_FRAME::UpdateTitle()
{
 bool unsaved = true;
 bool readOnly = false;
 wxString title;
 wxFileName filename = Prj().AbsolutePath( m_simulator->Settings()->GetWorkbookFilename() );
 
 if( filename.IsOk() && filename.FileExists() )
 {
 unsaved = false;
 readOnly = !filename.IsFileWritable();
 }
 
 if( m_workbookModified )
 title = wxT( "*" ) + filename.GetName();
 else
 title = filename.GetName();
 
 if( readOnly )
 title += wxS( " " ) + _( "[Read Only]" );
 
 if( unsaved )
 title += wxS( " " ) + _( "[Unsaved]" );
 
 title += wxT( " \u2014 " ) + _( "Spice Simulator" );
 
 SetTitle( title );
}
 
 
 
bool SIMULATOR_FRAME::LoadSimulator( const wxString& aSimCommand, unsigned aSimOptions )
{
 wxString errors;
 WX_STRING_REPORTER reporter( &errors );
 
 if( !m_schematicFrame->ReadyToNetlist( _( "Simulator requires a fully annotated schematic." ) ) )
 return false;
 
 // If we are using the new connectivity, make sure that we do a full-rebuild
 if( ADVANCED_CFG::GetCfg().m_IncrementalConnectivity )
 m_schematicFrame->RecalculateConnections( nullptr, GLOBAL_CLEANUP );
 
 if( !m_simulator->Attach( m_circuitModel, aSimCommand, aSimOptions, reporter ) )
 {
 DisplayErrorMessage( this, _( "Errors during netlist generation.\n\n" ) + errors );
 return false;
 }
 
 return true;
}
 
 
void SIMULATOR_FRAME::StartSimulation()
{
 SIM_TAB* simTab = m_ui->GetCurrentSimTab();
 
 if( !simTab )
 return;
 
 if( simTab->GetSimCommand().Upper().StartsWith( wxT( "FFT" ) ) )
 {
 wxString tranSpicePlot;
 
 if( SIM_TAB* tranPlotTab = m_ui->GetSimTab( ST_TRAN ) )
 tranSpicePlot = tranPlotTab->GetSpicePlotName();
 
 if( tranSpicePlot.IsEmpty() )
 {
 DisplayErrorMessage( this, _( "You must run a TRAN simulation first; its results"
 "will be used for the fast Fourier transform." ) );
 }
 else
 {
 m_simulator->Command( "setplot " + tranSpicePlot.ToStdString() );
 
 wxArrayString commands = wxSplit( simTab->GetSimCommand(), '\n' );
 
 for( const wxString& command : commands )
 {
 wxBusyCursor wait;
 m_simulator->Command( command.ToStdString() );
 }
 
 simTab->SetSpicePlotName( m_simulator->CurrentPlotName() );
 m_ui->OnSimRefresh( true );
 
#if 0
 m_simulator->Command( "setplot" ); // Print available plots to console
 m_simulator->Command( "display" ); // Print vectors in current plot to console
#endif
 }
 
 return;
 }
 else
 {
 if( m_ui->GetSimTabIndex( simTab ) == 0
 && m_circuitModel->GetSchTextSimCommand() != simTab->GetLastSchTextSimCommand() )
 {
 if( simTab->GetLastSchTextSimCommand().IsEmpty()
 || IsOK( this, _( "Schematic sheet simulation command directive has changed. "
 "Do you wish to update the Simulation Command?" ) ) )
 {
 simTab->SetSimCommand( m_circuitModel->GetSchTextSimCommand() );
 simTab->SetLastSchTextSimCommand( simTab->GetSimCommand() );
 OnModify();
 }
 }
 }
 
 if( !LoadSimulator( simTab->GetSimCommand(), simTab->GetSimOptions() ) )
 return;
 
 std::unique_lock<std::mutex> simulatorLock( m_simulator->GetMutex(), std::try_to_lock );
 
 if( simulatorLock.owns_lock() )
 {
 m_ui->OnSimUpdate();
 m_simulator->Run();
 }
 else
 {
 DisplayErrorMessage( this, _( "Another simulation is already running." ) );
 }
}
 
 
SIM_TAB* SIMULATOR_FRAME::NewSimTab( const wxString& aSimCommand )
{
 return m_ui->NewSimTab( aSimCommand );
}
 
 
const std::vector<wxString> SIMULATOR_FRAME::SimPlotVectors()
{
 return m_ui->SimPlotVectors();
}
 
 
const std::vector<wxString> SIMULATOR_FRAME::Signals()
{
 return m_ui->Signals();
}
 
 
const std::map<int, wxString>& SIMULATOR_FRAME::UserDefinedSignals()
{
 return m_ui->UserDefinedSignals();
}
 
 
void SIMULATOR_FRAME::SetUserDefinedSignals( const std::map<int, wxString>& aSignals )
{
 m_ui->SetUserDefinedSignals( aSignals );
}
 
 
void SIMULATOR_FRAME::AddVoltageTrace( const wxString& aNetName )
{
 m_ui->AddTrace( aNetName, SPT_VOLTAGE );
}
 
 
void SIMULATOR_FRAME::AddCurrentTrace( const wxString& aDeviceName )
{
 m_ui->AddTrace( aDeviceName, SPT_CURRENT );
}
 
 
void SIMULATOR_FRAME::AddTuner( const SCH_SHEET_PATH& aSheetPath, SCH_SYMBOL* aSymbol )
{
 m_ui->AddTuner( aSheetPath, aSymbol );
}
 
 
SIM_TAB* SIMULATOR_FRAME::GetCurrentSimTab() const
{
 return m_ui->GetCurrentSimTab();
}
 
 
bool SIMULATOR_FRAME::LoadWorkbook( const wxString& aPath )
{
 if( m_ui->LoadWorkbook( aPath ) )
 {
 UpdateTitle();
 
 // Successfully loading a workbook does not count as modifying it. Clear the modified
 // flag after all the EVT_WORKBOOK_MODIFIED events have been processed.
 CallAfter( [=]()
 {
 m_workbookModified = false;
 } );
 
 return true;
 }
 
 return false;
}
 
 
bool SIMULATOR_FRAME::SaveWorkbook( const wxString& aPath )
{
 if( m_ui->SaveWorkbook( aPath ) )
 {
 m_workbookModified = false;
 UpdateTitle();
 
 return true;
 }
 
 return false;
}
 
 
void SIMULATOR_FRAME::ToggleDarkModePlots()
{
 m_ui->ToggleDarkModePlots();
}
 
 
bool SIMULATOR_FRAME::EditAnalysis()
{
 SIM_TAB* simTab = m_ui->GetCurrentSimTab();
 DIALOG_SIM_COMMAND dlg( this, m_circuitModel, m_simulator->Settings() );
 wxString errors;
 WX_STRING_REPORTER reporter( &errors );
 
 if( !simTab )
 return false;
 
 if( !m_circuitModel->ReadSchematicAndLibraries( NETLIST_EXPORTER_SPICE::OPTION_DEFAULT_FLAGS,
 reporter ) )
 {
 DisplayErrorMessage( this, _( "Errors during netlist generation.\n\n" )
 + errors );
 }
 
 dlg.SetSimCommand( simTab->GetSimCommand() );
 dlg.SetSimOptions( simTab->GetSimOptions() );
 dlg.SetPlotSettings( simTab );
 
 if( dlg.ShowModal() == wxID_OK )
 {
 simTab->SetSimCommand( dlg.GetSimCommand() );
 dlg.ApplySettings( simTab );
 m_ui->OnPlotSettingsChanged();
 OnModify();
 return true;
 }
 
 return false;
}
 
 
bool SIMULATOR_FRAME::canCloseWindow( wxCloseEvent& aEvent )
{
 if( m_workbookModified )
 {
 wxFileName filename = m_simulator->Settings()->GetWorkbookFilename();
 
 if( filename.GetName().IsEmpty() )
 {
 if( Prj().GetProjectName().IsEmpty() )
 filename.SetFullName( wxT( "noname.wbk" ) );
 else
 filename.SetFullName( Prj().GetProjectName() + wxT( ".wbk" ) );
 }
 
 return HandleUnsavedChanges( this, _( "Save changes to workbook?" ),
 [&]() -> bool
 {
 return SaveWorkbook( Prj().AbsolutePath( filename.GetFullName() ) );
 } );
 }
 
 return true;
}
 
 
void SIMULATOR_FRAME::doCloseWindow()
{
 if( m_simulator->IsRunning() )
 m_simulator->Stop();
 
 // Prevent memory leak on exit by deleting all simulation vectors
 m_simulator->Clean();
 
 // Cancel a running simProbe or simTune tool
 m_schematicFrame->GetToolManager()->PostAction( ACTIONS::cancelInteractive );
 
 SaveSettings( config() );
 
 m_simulator->Settings() = nullptr;
 
 Destroy();
}
 
 
void SIMULATOR_FRAME::setupUIConditions()
{
 EDA_BASE_FRAME::setupUIConditions();
 
 ACTION_MANAGER* mgr = m_toolManager->GetActionManager();
 wxASSERT( mgr );
 
 auto showGridCondition =
 [this]( const SELECTION& aSel )
 {
 SIM_PLOT_TAB* plotTab = dynamic_cast<SIM_PLOT_TAB*>( GetCurrentSimTab() );
 return plotTab && plotTab->IsGridShown();
 };
 
 auto showLegendCondition =
 [this]( const SELECTION& aSel )
 {
 SIM_PLOT_TAB* plotTab = dynamic_cast<SIM_PLOT_TAB*>( GetCurrentSimTab() );
 return plotTab && plotTab->IsLegendShown();
 };
 
 auto showDottedCondition =
 [this]( const SELECTION& aSel )
 {
 SIM_PLOT_TAB* plotTab = dynamic_cast<SIM_PLOT_TAB*>( GetCurrentSimTab() );
 return plotTab && plotTab->GetDottedSecondary();
 };
 
 auto darkModePlotCondition =
 [this]( const SELECTION& aSel )
 {
 return m_ui->DarkModePlots();
 };
 
 auto simRunning =
 [this]( const SELECTION& aSel )
 {
 return m_simulator && m_simulator->IsRunning();
 };
 
 auto simFinished =
 [this]( const SELECTION& aSel )
 {
 return m_simFinished;
 };
 
 auto haveSim =
 [this]( const SELECTION& aSel )
 {
 return GetCurrentSimTab() != nullptr;
 };
 
 auto havePlot =
 [this]( const SELECTION& aSel )
 {
 return dynamic_cast<SIM_PLOT_TAB*>( GetCurrentSimTab() ) != nullptr;
 };
 
#define ENABLE( x ) ACTION_CONDITIONS().Enable( x )
#define CHECK( x ) ACTION_CONDITIONS().Check( x )
 
 mgr->SetConditions( EE_ACTIONS::openWorkbook, ENABLE( SELECTION_CONDITIONS::ShowAlways ) );
 mgr->SetConditions( EE_ACTIONS::saveWorkbook, ENABLE( SELECTION_CONDITIONS::ShowAlways ) );
 mgr->SetConditions( EE_ACTIONS::saveWorkbookAs, ENABLE( SELECTION_CONDITIONS::ShowAlways ) );
 
 mgr->SetConditions( EE_ACTIONS::exportPlotAsPNG, ENABLE( havePlot ) );
 mgr->SetConditions( EE_ACTIONS::exportPlotAsCSV, ENABLE( havePlot ) );
 
 mgr->SetConditions( EE_ACTIONS::toggleGrid, CHECK( showGridCondition ) );
 mgr->SetConditions( EE_ACTIONS::toggleLegend, CHECK( showLegendCondition ) );
 mgr->SetConditions( EE_ACTIONS::toggleDottedSecondary, CHECK( showDottedCondition ) );
 mgr->SetConditions( EE_ACTIONS::toggleDarkModePlots, CHECK( darkModePlotCondition ) );
 
 mgr->SetConditions( EE_ACTIONS::newAnalysisTab, ENABLE( SELECTION_CONDITIONS::ShowAlways ) );
 mgr->SetConditions( EE_ACTIONS::simAnalysisProperties, ENABLE( haveSim ) );
 mgr->SetConditions( EE_ACTIONS::runSimulation, ENABLE( !simRunning ) );
 mgr->SetConditions( EE_ACTIONS::stopSimulation, ENABLE( simRunning ) );
 mgr->SetConditions( EE_ACTIONS::simProbe, ENABLE( simFinished ) );
 mgr->SetConditions( EE_ACTIONS::simTune, ENABLE( simFinished ) );
 mgr->SetConditions( EE_ACTIONS::showNetlist, ENABLE( SELECTION_CONDITIONS::ShowAlways ) );
 
#undef CHECK
#undef ENABLE
}
 
 
void SIMULATOR_FRAME::onSimStarted( wxCommandEvent& aEvent )
{
 SetCursor( wxCURSOR_ARROWWAIT );
}
 
 
void SIMULATOR_FRAME::onSimFinished( wxCommandEvent& aEvent )
{
 // Sometimes (for instance with a directive like wrdata my_file.csv "my_signal")
 // the simulator is in idle state (simulation is finished), but still running, during
 // the time the file is written. So gives a slice of time to fully finish the work:
 if( m_simulator->IsRunning() )
 {
 int max_time = 40; // For a max timeout = 2s
 
 do
 {
 wxMilliSleep( 50 );
 wxYield();
 
 if( max_time )
 max_time--;
 
 } while( max_time && m_simulator->IsRunning() );
 }
 
 // ensure the shown cursor is the default cursor, not the wxCURSOR_ARROWWAIT set when
 // staring the simulator in onSimStarted:
 SetCursor( wxNullCursor );
 
 // Is a warning message useful if the simulatior is still running?
 SCHEMATIC& schematic = m_schematicFrame->Schematic();
 schematic.ClearOperatingPoints();
 
 m_simFinished = true;
 
 m_ui->OnSimRefresh( true );
 
 m_schematicFrame->RefreshOperatingPointDisplay();
 m_schematicFrame->GetCanvas()->Refresh();
}
 
 
void SIMULATOR_FRAME::onUpdateSim( wxCommandEvent& aEvent )
{
 static bool updateInProgress = false;
 
 // skip update when events are triggered too often and previous call didn't end yet
 if( updateInProgress )
 return;
 
 updateInProgress = true;
 
 if( m_simulator->IsRunning() )
 m_simulator->Stop();
 
 std::unique_lock<std::mutex> simulatorLock( m_simulator->GetMutex(), std::try_to_lock );
 
 if( simulatorLock.owns_lock() )
 {
 m_ui->OnSimUpdate();
 m_simulator->Run();
 }
 else
 {
 DisplayErrorMessage( this, _( "Another simulation is already running." ) );
 }
 
 updateInProgress = false;
}
 
 
void SIMULATOR_FRAME::onSimReport( wxCommandEvent& aEvent )
{
 m_ui->OnSimReport( aEvent.GetString() );
}
 
 
void SIMULATOR_FRAME::onExit( wxCommandEvent& aEvent )
{
 if( aEvent.GetId() == wxID_EXIT )
 Kiway().OnKiCadExit();
 
 if( aEvent.GetId() == wxID_CLOSE )
 Close( false );
}
 
 
void SIMULATOR_FRAME::OnModify()
{
 KIWAY_PLAYER::OnModify();
 m_workbookModified = true;
 UpdateTitle();
}
 
 
wxDEFINE_EVENT( EVT_SIM_UPDATE, wxCommandEvent );
wxDEFINE_EVENT( EVT_SIM_REPORT, wxCommandEvent );
 
wxDEFINE_EVENT( EVT_SIM_STARTED, wxCommandEvent );
wxDEFINE_EVENT( EVT_SIM_FINISHED, wxCommandEvent );