symbol_viewer_frame.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2018 Jean-Pierre Charras, jp.charras at wanadoo.fr
 * Copyright (C) 2008 Wayne Stambaugh <[email protected]>
 * Copyright (C) 2004-2023 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */
 
#include <bitmaps.h>
#include <symbol_library_common.h>
#include <confirm.h>
#include <dialog_choose_symbol.h>
#include <dialogs/html_message_box.h>
#include <eeschema_id.h>
#include <eeschema_settings.h>
#include <kiface_base.h>
#include <kiway.h>
#include <locale_io.h>
#include <symbol_viewer_frame.h>
#include <widgets/msgpanel.h>
#include <widgets/wx_listbox.h>
#include <sch_view.h>
#include <sch_painter.h>
#include <symbol_lib_table.h>
#include <symbol_tree_model_adapter.h>
#include <pgm_base.h>
#include <project/project_file.h>
#include <settings/settings_manager.h>
#include <symbol_async_loader.h>
#include <tool/action_toolbar.h>
#include <tool/common_control.h>
#include <tool/common_tools.h>
#include <tool/editor_conditions.h>
#include <tool/selection.h>
#include <tool/tool_dispatcher.h>
#include <tool/tool_manager.h>
#include <tool/zoom_tool.h>
#include <tools/ee_actions.h>
#include <tools/symbol_editor_control.h>
#include <tools/ee_inspection_tool.h>
#include <view/view_controls.h>
#include <widgets/wx_progress_reporters.h>
#include <wx/srchctrl.h>
 
#include <default_values.h>
#include <string_utils.h>
#include "eda_pattern_match.h"
 
// Save previous symbol library viewer state.
LIB_ID SYMBOL_VIEWER_FRAME::m_currentSymbol;
 
int SYMBOL_VIEWER_FRAME::m_unit = 1;
int SYMBOL_VIEWER_FRAME::m_convert = 1;
bool SYMBOL_VIEWER_FRAME::m_show_progress = true;
 
 
BEGIN_EVENT_TABLE( SYMBOL_VIEWER_FRAME, SCH_BASE_FRAME )
 // Window events
 EVT_SIZE( SYMBOL_VIEWER_FRAME::OnSize )
 EVT_ACTIVATE( SYMBOL_VIEWER_FRAME::OnActivate )
 
 // Toolbar events
 EVT_TOOL( ID_LIBVIEW_SELECT_PART, SYMBOL_VIEWER_FRAME::OnSelectSymbol )
 EVT_TOOL( ID_LIBVIEW_NEXT, SYMBOL_VIEWER_FRAME::onSelectNextSymbol )
 EVT_TOOL( ID_LIBVIEW_PREVIOUS, SYMBOL_VIEWER_FRAME::onSelectPreviousSymbol )
 EVT_CHOICE( ID_LIBVIEW_SELECT_UNIT_NUMBER, SYMBOL_VIEWER_FRAME::onSelectSymbolUnit )
 
 // listbox events
 EVT_TEXT( ID_LIBVIEW_LIB_FILTER, SYMBOL_VIEWER_FRAME::OnLibFilter )
 EVT_LISTBOX( ID_LIBVIEW_LIB_LIST, SYMBOL_VIEWER_FRAME::ClickOnLibList )
 EVT_TEXT( ID_LIBVIEW_SYM_FILTER, SYMBOL_VIEWER_FRAME::OnSymFilter )
 EVT_LISTBOX( ID_LIBVIEW_SYM_LIST, SYMBOL_VIEWER_FRAME::ClickOnSymbolList )
 EVT_LISTBOX_DCLICK( ID_LIBVIEW_SYM_LIST, SYMBOL_VIEWER_FRAME::DClickOnSymbolList )
 
 // Menu (and/or hotkey) events
 EVT_MENU( wxID_CLOSE, SYMBOL_VIEWER_FRAME::CloseLibraryViewer )
 EVT_MENU( ID_GRID_SETTINGS, SCH_BASE_FRAME::OnGridSettings )
 
 EVT_UPDATE_UI( ID_LIBVIEW_SELECT_UNIT_NUMBER, SYMBOL_VIEWER_FRAME::onUpdateUnitChoice )
 
END_EVENT_TABLE()
 
 
#define LIB_VIEW_NAME "ViewlibFrame"
#define LIB_VIEW_NAME_MODAL "ViewlibFrameModal"
 
#define LIB_VIEW_STYLE ( KICAD_DEFAULT_DRAWFRAME_STYLE )
#define LIB_VIEW_STYLE_MODAL ( KICAD_DEFAULT_DRAWFRAME_STYLE | wxFRAME_FLOAT_ON_PARENT )
 
 
SYMBOL_VIEWER_FRAME::SYMBOL_VIEWER_FRAME( KIWAY* aKiway, wxWindow* aParent, FRAME_T aFrameType,
 const wxString& aLibraryName ) :
 SCH_BASE_FRAME( aKiway, aParent, aFrameType, _( "Symbol Library Browser" ),
 wxDefaultPosition, wxDefaultSize,
 aFrameType == FRAME_SCH_VIEWER_MODAL ? LIB_VIEW_STYLE_MODAL : LIB_VIEW_STYLE,
 aFrameType == FRAME_SCH_VIEWER_MODAL ? LIB_VIEW_NAME_MODAL : LIB_VIEW_NAME ),
 m_unitChoice( nullptr ),
 m_libList( nullptr ),
 m_symbolList( nullptr ),
 m_previewItem( nullptr )
{
 wxASSERT( aFrameType == FRAME_SCH_VIEWER || aFrameType == FRAME_SCH_VIEWER_MODAL );
 
 if( aFrameType == FRAME_SCH_VIEWER_MODAL )
 SetModal( true );
 
 m_aboutTitle = _HKI( "KiCad Symbol Library Viewer" );
 
 // Force the frame name used in config. the lib viewer frame has a name
 // depending on aFrameType (needed to identify the frame by wxWidgets),
 // but only one configuration is preferable.
 m_configName = LIB_VIEW_NAME;
 
 // Give an icon
 wxIcon icon;
 icon.CopyFromBitmap( KiBitmap( BITMAPS::library_browser ) );
 SetIcon( icon );
 
 m_libListWidth = 200;
 m_symbolListWidth = 300;
 m_listPowerOnly = false;
 
 SetScreen( new SCH_SCREEN );
 GetScreen()->m_Center = true; // Axis origin centered on screen.
 LoadSettings( config() );
 
 // Ensure axis are always drawn (initial default display was not drawn)
 KIGFX::GAL_DISPLAY_OPTIONS& gal_opts = GetGalDisplayOptions();
 gal_opts.m_axesEnabled = true;
 gal_opts.m_gridMinSpacing = 10.0;
 gal_opts.NotifyChanged();
 
 GetRenderSettings()->LoadColors( GetColorSettings() );
 GetCanvas()->GetGAL()->SetAxesColor( m_colorSettings->GetColor( LAYER_SCHEMATIC_GRID_AXES ) );
 
 GetRenderSettings()->SetDefaultPenWidth( DEFAULT_LINE_WIDTH_MILS * schIUScale.IU_PER_MILS );
 
 setupTools();
 setupUIConditions();
 
 ReCreateHToolbar();
 ReCreateVToolbar();
 ReCreateMenuBar();
 
 wxPanel* libPanel = new wxPanel( this );
 wxSizer* libSizer = new wxBoxSizer( wxVERTICAL );
 
 m_libFilter = new wxSearchCtrl( libPanel, ID_LIBVIEW_LIB_FILTER, wxEmptyString,
 wxDefaultPosition, wxDefaultSize, wxTE_PROCESS_ENTER );
 m_libFilter->SetDescriptiveText( _( "Filter" ) );
 libSizer->Add( m_libFilter, 0, wxEXPAND, 5 );
 
 m_libList = new WX_LISTBOX( libPanel, ID_LIBVIEW_LIB_LIST, wxDefaultPosition, wxDefaultSize,
 0, nullptr, wxLB_HSCROLL | wxNO_BORDER );
 libSizer->Add( m_libList, 1, wxEXPAND, 5 );
 
 libPanel->SetSizer( libSizer );
 libPanel->Fit();
 
 wxPanel* symbolPanel = new wxPanel( this );
 wxSizer* symbolSizer = new wxBoxSizer( wxVERTICAL );
 
 m_symbolFilter = new wxSearchCtrl( symbolPanel, ID_LIBVIEW_SYM_FILTER, wxEmptyString,
 wxDefaultPosition, wxDefaultSize, wxTE_PROCESS_ENTER );
 m_symbolFilter->SetDescriptiveText( _( "Filter" ) );
 m_symbolFilter->SetToolTip(
 _( "Filter on symbol name, keywords, description and pin count.\n"
 "Search terms are separated by spaces. All search terms must match.\n"
 "A term which is a number will also match against the pin count." ) );
 symbolSizer->Add( m_symbolFilter, 0, wxEXPAND, 5 );
 
#ifdef __WXGTK__
 // wxSearchCtrl vertical height is not calculated correctly on some GTK setups
 // See https://gitlab.com/kicad/code/kicad/-/issues/9019
 m_libFilter->SetMinSize( wxSize( -1, GetTextExtent( wxT( "qb" ) ).y + 10 ) );
 m_symbolFilter->SetMinSize( wxSize( -1, GetTextExtent( wxT( "qb" ) ).y + 10 ) );
#endif
 
 m_symbolList = new WX_LISTBOX( symbolPanel, ID_LIBVIEW_SYM_LIST, wxDefaultPosition, wxDefaultSize,
 0, nullptr, wxLB_HSCROLL | wxNO_BORDER );
 symbolSizer->Add( m_symbolList, 1, wxEXPAND, 5 );
 
 symbolPanel->SetSizer( symbolSizer );
 symbolPanel->Fit();
 
 // Preload libraries
 loadAllLibraries();
 
 if( aLibraryName.empty() )
 {
 ReCreateLibList();
 }
 else
 {
 m_currentSymbol.SetLibNickname( aLibraryName );
 m_currentSymbol.SetLibItemName( "" );
 m_unit = 1;
 m_convert = 1;
 }
 
 m_selection_changed = false;
 
 DisplayLibInfos();
 
 m_auimgr.SetManagedWindow( this );
 
 CreateInfoBar();
 
 // Manage main toolbar
 m_auimgr.AddPane( m_mainToolBar, EDA_PANE().HToolbar().Name( "MainToolbar" ).Top().Layer(6) );
 m_auimgr.AddPane( m_messagePanel, EDA_PANE().Messages().Name( "MsgPanel" ) .Bottom().Layer(6) );
 
 m_auimgr.AddPane( libPanel, EDA_PANE().Palette().Name( "Libraries" ).Left().Layer(2)
 .CaptionVisible( false ).MinSize( 100, -1 ).BestSize( 200, -1 ) );
 m_auimgr.AddPane( symbolPanel, EDA_PANE().Palette().Name( "Symbols" ).Left().Layer(1)
 .CaptionVisible( false ).MinSize( 100, -1 ).BestSize( 300, -1 ) );
 
 m_auimgr.AddPane( GetCanvas(), EDA_PANE().Canvas().Name( "DrawFrame" ).Center() );
 
 m_auimgr.GetPane( libPanel ).Show( aLibraryName.empty() );
 
 m_auimgr.Update();
 
 if( m_libListWidth > 0 )
 {
 wxAuiPaneInfo& treePane = m_auimgr.GetPane( "Libraries" );
 
 // wxAUI hack: force width by setting MinSize() and then Fixed()
 // thanks to ZenJu http://trac.wxwidgets.org/ticket/13180
 treePane.MinSize( m_libListWidth, -1 );
 treePane.Fixed();
 m_auimgr.Update();
 
 // now make it resizable again
 treePane.Resizable();
 m_auimgr.Update();
 
 // Note: DO NOT call m_auimgr.Update() anywhere after this; it will nuke the size
 // back to minimum.
 treePane.MinSize( 100, -1 );
 }
 
 if( m_symbolListWidth > 0 )
 {
 wxAuiPaneInfo& treePane = m_auimgr.GetPane( "Symbols" );
 
 // wxAUI hack: force width by setting MinSize() and then Fixed()
 // thanks to ZenJu http://trac.wxwidgets.org/ticket/13180
 treePane.MinSize( m_symbolListWidth, -1 );
 treePane.Fixed();
 m_auimgr.Update();
 
 // now make it resizable again
 treePane.Resizable();
 m_auimgr.Update();
 
 // Note: DO NOT call m_auimgr.Update() anywhere after this; it will nuke the size
 // back to minimum.
 treePane.MinSize( 100, -1 );
 }
 
 FinishAUIInitialization();
 
 if( !IsModal() ) // For modal mode, calling ShowModal() will show this frame
 {
 Raise();
 Show( true );
 }
 
 SyncView();
 GetCanvas()->SetCanFocus( false );
 
 setupUnits( config() );
 
 // Set the working/draw area size to display a symbol to a reasonable value:
 // A 450mm x 450mm with a origin at the area center looks like a large working area
 double max_size_x = schIUScale.mmToIU( 450 );
 double max_size_y = schIUScale.mmToIU( 450 );
 BOX2D bbox;
 bbox.SetOrigin( -max_size_x / 2, -max_size_y / 2 );
 bbox.SetSize( max_size_x, max_size_y );
 GetCanvas()->GetView()->SetBoundary( bbox );
 GetToolManager()->RunAction( ACTIONS::zoomFitScreen, true );
 
 // If a symbol was previously selected in m_symbolList from a previous run, show it
 wxString symbName = m_symbolList->GetStringSelection();
 
 if( !symbName.IsEmpty() )
 {
 SetSelectedSymbol( symbName );
 updatePreviewSymbol();
 }
}
 
 
SYMBOL_VIEWER_FRAME::~SYMBOL_VIEWER_FRAME()
{
 // Shutdown all running tools
 if( m_toolManager )
 m_toolManager->ShutdownAllTools();
 
 if( m_previewItem )
 GetCanvas()->GetView()->Remove( m_previewItem );
}
 
 
void SYMBOL_VIEWER_FRAME::loadAllLibraries()
{
 // TODO: deduplicate with SYMBOL_TREE_MODEL_ADAPTER::AddLibraries
 std::vector<wxString> libraryNames = Prj().SchSymbolLibTable()->GetLogicalLibs();
 std::unique_ptr<WX_PROGRESS_REPORTER> progressReporter = nullptr;
 
 if( m_show_progress )
 {
 progressReporter = std::make_unique<WX_PROGRESS_REPORTER>( this,
 _( "Loading Symbol Libraries" ),
 libraryNames.size(), true );
 }
 
 // Disable KIID generation: not needed for library parts; sometimes very slow
 KIID::CreateNilUuids( true );
 
 std::unordered_map<wxString, std::vector<LIB_SYMBOL*>> loadedSymbols;
 
 SYMBOL_ASYNC_LOADER loader( libraryNames, Prj().SchSymbolLibTable(), false, nullptr,
 progressReporter.get() );
 
 LOCALE_IO toggle;
 
 loader.Start();
 
 while( !loader.Done() )
 {
 if( progressReporter && !progressReporter->KeepRefreshing() )
 break;
 
 wxMilliSleep( 33 );
 }
 
 loader.Join();
 
 KIID::CreateNilUuids( false );
 
 if( !loader.GetErrors().IsEmpty() )
 {
 HTML_MESSAGE_BOX dlg( this, _( "Load Error" ) );
 
 dlg.MessageSet( _( "Errors loading symbols:" ) );
 
 wxString msg = loader.GetErrors();
 msg.Replace( "\n", "<BR>" );
 
 dlg.AddHTML_Text( msg );
 dlg.ShowModal();
 }
}
 
 
void SYMBOL_VIEWER_FRAME::setupTools()
{
 // Create the manager and dispatcher & route draw panel events to the dispatcher
 m_toolManager = new TOOL_MANAGER;
 m_toolManager->SetEnvironment( GetScreen(), GetCanvas()->GetView(),
 GetCanvas()->GetViewControls(), config(), this );
 m_actions = new EE_ACTIONS();
 m_toolDispatcher = new TOOL_DISPATCHER( m_toolManager );
 
 // Register tools
 m_toolManager->RegisterTool( new COMMON_TOOLS );
 m_toolManager->RegisterTool( new COMMON_CONTROL );
 m_toolManager->RegisterTool( new ZOOM_TOOL );
 m_toolManager->RegisterTool( new EE_INSPECTION_TOOL ); // manage show datasheet
 m_toolManager->RegisterTool( new EE_SELECTION_TOOL ); // manage context menu
 m_toolManager->RegisterTool( new SYMBOL_EDITOR_CONTROL ); // manage render settings
 
 m_toolManager->InitTools();
 
 // Run the selection tool, it is supposed to be always active
 // It also manages the mouse right click to show the context menu
 m_toolManager->InvokeTool( "eeschema.InteractiveSelection" );
 
 GetCanvas()->SetEventDispatcher( m_toolDispatcher );
}
 
 
void SYMBOL_VIEWER_FRAME::setupUIConditions()
{
 SCH_BASE_FRAME::setupUIConditions();
 
 ACTION_MANAGER* mgr = m_toolManager->GetActionManager();
 EDITOR_CONDITIONS cond( this );
 
 wxASSERT( mgr );
 
#define ENABLE( x ) ACTION_CONDITIONS().Enable( x )
#define CHECK( x ) ACTION_CONDITIONS().Check( x )
 
 mgr->SetConditions( ACTIONS::toggleGrid, CHECK( cond.GridVisible() ) );
 
 auto electricalTypesShownCondition =
 [this]( const SELECTION& aSel )
 {
 return GetRenderSettings()->m_ShowPinsElectricalType;
 };
 
 auto pinNumbersShownCondition =
 [this]( const SELECTION& )
 {
 return GetRenderSettings()->m_ShowPinNumbers;
 };
 
 auto demorganCond =
 [this]( const SELECTION& )
 {
 LIB_SYMBOL* symbol = GetSelectedSymbol();
 
 return symbol && symbol->HasConversion();
 };
 
 auto demorganStandardCond =
 []( const SELECTION& )
 {
 return m_convert == LIB_ITEM::LIB_CONVERT::BASE;
 };
 
 auto demorganAlternateCond =
 []( const SELECTION& )
 {
 return m_convert == LIB_ITEM::LIB_CONVERT::DEMORGAN;
 };
 
 auto haveDatasheetCond =
 [this]( const SELECTION& )
 {
 LIB_SYMBOL* symbol = GetSelectedSymbol();
 
 return symbol && !symbol->GetDatasheetField().GetText().IsEmpty();
 };
 
 mgr->SetConditions( EE_ACTIONS::showDatasheet, ENABLE( haveDatasheetCond ) );
 mgr->SetConditions( EE_ACTIONS::showElectricalTypes, CHECK( electricalTypesShownCondition ) );
 mgr->SetConditions( EE_ACTIONS::showPinNumbers, CHECK( pinNumbersShownCondition ) );
 
 mgr->SetConditions( EE_ACTIONS::showDeMorganStandard,
 ACTION_CONDITIONS().Enable( demorganCond ).Check( demorganStandardCond ) );
 mgr->SetConditions( EE_ACTIONS::showDeMorganAlternate,
 ACTION_CONDITIONS().Enable( demorganCond ).Check( demorganAlternateCond ) );
 
#undef CHECK
#undef ENABLE
}
 
 
void SYMBOL_VIEWER_FRAME::SetUnitAndConvert( int aUnit, int aConvert )
{
 m_unit = aUnit > 0 ? aUnit : 1;
 m_convert = aConvert > 0 ? aConvert : LIB_ITEM::LIB_CONVERT::BASE;
 m_selection_changed = false;
 
 updatePreviewSymbol();
}
 
 
LIB_SYMBOL* SYMBOL_VIEWER_FRAME::GetSelectedSymbol() const
{
 LIB_SYMBOL* symbol = nullptr;
 
 if( m_currentSymbol.IsValid() )
 symbol = Prj().SchSymbolLibTable()->LoadSymbol( m_currentSymbol );
 
 return symbol;
}
 
 
void SYMBOL_VIEWER_FRAME::updatePreviewSymbol()
{
 LIB_SYMBOL* symbol = GetSelectedSymbol();
 KIGFX::SCH_VIEW* view = GetCanvas()->GetView();
 
 if( m_previewItem )
 {
 view->Remove( m_previewItem );
 m_previewItem = nullptr;
 }
 
 ClearMsgPanel();
 
 if( symbol )
 {
 GetRenderSettings()->m_ShowUnit = m_unit;
 GetRenderSettings()->m_ShowConvert = m_convert;
 
 m_previewItem = symbol;
 view->Add( m_previewItem );
 
 wxString parentName;
 std::shared_ptr<LIB_SYMBOL> parent = m_previewItem->GetParent().lock();
 
 if( parent )
 parentName = parent->GetName();
 
 AppendMsgPanel( _( "Name" ), UnescapeString( m_previewItem->GetName() ) );
 AppendMsgPanel( _( "Parent" ), UnescapeString( parentName ) );
 AppendMsgPanel( _( "Description" ), m_previewItem->GetDescription() );
 AppendMsgPanel( _( "Keywords" ), m_previewItem->GetKeyWords() );
 }
 
 m_toolManager->RunAction( ACTIONS::zoomFitScreen, true );
 GetCanvas()->Refresh();
}
 
 
bool SYMBOL_VIEWER_FRAME::ShowModal( wxString* aSymbol, wxWindow* aParent )
{
 if( aSymbol && !aSymbol->IsEmpty() )
 {
 wxString msg;
 LIB_TABLE* libTable = Prj().SchSymbolLibTable();
 LIB_ID libid;
 
 libid.Parse( *aSymbol, true );
 
 if( libid.IsValid() )
 {
 wxString libName = libid.GetLibNickname();
 
 if( !libTable->HasLibrary( libid.GetLibNickname(), false ) )
 {
 msg.Printf( _( "The current configuration does not include the library '%s'.\n"
 "Use Manage Symbol Libraries to edit the configuration." ),
 UnescapeString( libName ) );
 DisplayErrorMessage( this, _( "Library not found in symbol library table." ), msg );
 }
 else if ( !libTable->HasLibrary( libid.GetLibNickname(), true ) )
 {
 msg.Printf( _( "The library '%s' is not enabled in the current configuration.\n"
 "Use Manage Symbol Libraries to edit the configuration." ),
 UnescapeString( libName ) );
 DisplayErrorMessage( aParent, _( "Symbol library not enabled." ), msg );
 }
 else
 {
 SetSelectedLibrary( libid.GetLibNickname(), libid.GetSubLibraryName() );
 SetSelectedSymbol( libid.GetLibItemName() );
 }
 }
 }
 
 m_libFilter->SetFocus();
 return KIWAY_PLAYER::ShowModal( aSymbol, aParent );
}
 
 
void SYMBOL_VIEWER_FRAME::doCloseWindow()
{
 GetCanvas()->StopDrawing();
 
 if( !IsModal() )
 {
 Destroy();
 }
 else if( !IsDismissed() )
 {
 // only dismiss modal frame if not already dismissed.
 DismissModal( false );
 
 // Modal frame will be destroyed by the calling function.
 }
}
 
 
void SYMBOL_VIEWER_FRAME::OnSize( wxSizeEvent& SizeEv )
{
 if( m_auimgr.GetManagedWindow() )
 m_auimgr.Update();
 
 SizeEv.Skip();
}
 
 
void SYMBOL_VIEWER_FRAME::onUpdateUnitChoice( wxUpdateUIEvent& aEvent )
{
 LIB_SYMBOL* symbol = GetSelectedSymbol();
 
 int unit_count = 1;
 
 if( symbol )
 unit_count = std::max( symbol->GetUnitCount(), 1 );
 
 m_unitChoice->Enable( unit_count > 1 );
 
 if( unit_count > 1 )
 {
 // rebuild the unit list if it is not suitable (after a new selection for instance)
 if( unit_count != (int)m_unitChoice->GetCount() )
 {
 m_unitChoice->Clear();
 
 for( int ii = 0; ii < unit_count; ii++ )
 {
 wxString unit = symbol->GetUnitDisplayName( ii + 1 );
 m_unitChoice->Append( unit );
 }
 
 }
 
 if( m_unitChoice->GetSelection() != std::max( 0, m_unit - 1 ) )
 m_unitChoice->SetSelection( std::max( 0, m_unit - 1 ) );
 }
 else if( m_unitChoice->GetCount() )
 {
 m_unitChoice->Clear();
 }
}
 
 
bool SYMBOL_VIEWER_FRAME::ReCreateLibList()
{
 if( !m_libList )
 return false;
 
 m_libList->Clear();
 
 COMMON_SETTINGS* cfg = Pgm().GetCommonSettings();
 PROJECT_FILE& project = Kiway().Prj().GetProjectFile();
 SYMBOL_LIB_TABLE* libTable = Prj().SchSymbolLibTable();
 std::vector<wxString> libs = libTable->GetLogicalLibs();
 std::vector<wxString> pinnedMatches;
 std::vector<wxString> otherMatches;
 
 auto doAddLib =
 [&]( const wxString& aLib )
 {
 if( alg::contains( project.m_PinnedSymbolLibs, aLib )
 || alg::contains( cfg->m_Session.pinned_symbol_libs, aLib ) )
 {
 pinnedMatches.push_back( aLib );
 }
 else
 {
 otherMatches.push_back( aLib );
 }
 };
 
 auto process =
 [&]( const wxString& aLib )
 {
 // Remove not allowed libs, if the allowed lib list is not empty
 if( m_allowedLibs.GetCount() )
 {
 if( m_allowedLibs.Index( aLib ) == wxNOT_FOUND )
 return;
 }
 
 // Remove libs which have no power symbols, if this filter is activated
 if( m_listPowerOnly )
 {
 wxArrayString aliasNames;
 
 Prj().SchSymbolLibTable()->EnumerateSymbolLib( aLib, aliasNames, true );
 
 if( aliasNames.IsEmpty() )
 return;
 }
 
 SYMBOL_LIB_TABLE_ROW* row = libTable->FindRow( aLib );
 
 if( !row->GetIsVisible() )
 return;
 
 if( row->SupportsSubLibraries() )
 {
 std::vector<wxString> subLibraries;
 row->GetSubLibraryNames( subLibraries );
 
 for( const wxString& lib : subLibraries )
 {
 wxString suffix = lib.IsEmpty() ? wxT( "" )
 : wxString::Format( wxT( " - %s" ), lib );
 wxString name = wxString::Format( wxT( "%s%s" ), aLib, suffix );
 
 doAddLib( name );
 }
 }
 else
 {
 doAddLib( aLib );
 }
 };
 
 if( m_libFilter->GetValue().IsEmpty() )
 {
 for( const wxString& lib : libs )
 process( lib );
 }
 else
 {
 wxStringTokenizer tokenizer( m_libFilter->GetValue() );
 
 while( tokenizer.HasMoreTokens() )
 {
 const wxString term = tokenizer.GetNextToken().Lower();
 EDA_COMBINED_MATCHER matcher( term, CTX_LIBITEM );
 int matches, position;
 
 for( const wxString& lib : libs )
 {
 if( matcher.Find( lib.Lower(), matches, position ) )
 process( lib );
 }
 }
 }
 
 if( libs.empty() )
 return true;
 
 for( const wxString& name : pinnedMatches )
 m_libList->Append( LIB_TREE_MODEL_ADAPTER::GetPinningSymbol() + UnescapeString( name ) );
 
 for( const wxString& name : otherMatches )
 m_libList->Append( UnescapeString( name ) );
 
 // Search for a previous selection:
 int index = m_libList->FindString( UnescapeString( m_currentSymbol.GetUniStringLibNickname() ) );
 
 if( index != wxNOT_FOUND )
 {
 m_libList->SetSelection( index, true );
 }
 else
 {
 // If not found, clear current library selection because it can be deleted after a
 // config change.
 m_currentSymbol.SetLibNickname( m_libList->GetCount() > 0
 ? m_libList->GetBaseString( 0 ) : wxT( "" ) );
 m_currentSymbol.SetLibItemName( wxEmptyString );
 m_unit = 1;
 m_convert = LIB_ITEM::LIB_CONVERT::BASE;
 }
 
 bool cmp_changed = ReCreateSymbolList();
 DisplayLibInfos();
 GetCanvas()->Refresh();
 
 return cmp_changed;
}
 
 
bool SYMBOL_VIEWER_FRAME::ReCreateSymbolList()
{
 if( m_symbolList == nullptr )
 return false;
 
 m_symbolList->Clear();
 
 wxString libName = m_currentSymbol.GetUniStringLibNickname();
 
 if( libName.IsEmpty() )
 return false;
 
 std::vector<LIB_SYMBOL*> symbols;
 SYMBOL_LIB_TABLE_ROW* row = Prj().SchSymbolLibTable()->FindRow( libName );
 
 try
 {
 if( row )
 Prj().SchSymbolLibTable()->LoadSymbolLib( symbols, libName, m_listPowerOnly );
 }
 catch( const IO_ERROR& ) {} // ignore, it is handled below
 
 std::set<wxString> excludes;
 
 if( !m_symbolFilter->GetValue().IsEmpty() )
 {
 wxStringTokenizer tokenizer( m_symbolFilter->GetValue() );
 
 while( tokenizer.HasMoreTokens() )
 {
 const wxString term = tokenizer.GetNextToken().Lower();
 EDA_COMBINED_MATCHER matcher( term, CTX_LIBITEM );
 int matches, position;
 
 for( LIB_SYMBOL* symbol : symbols )
 {
 wxString search = symbol->GetName() + wxS( " " ) + symbol->GetSearchText();
 bool matched = matcher.Find( search.Lower(), matches, position );
 
 if( !matched && term.IsNumber() )
 matched = ( wxAtoi( term ) == (int)symbol->GetPinCount() );
 
 if( !matched )
  excludes.insert( symbol->GetName() );
 }
 }
 }
 
 wxString subLib = m_currentSymbol.GetSubLibraryName();
 
 for( const LIB_SYMBOL* symbol : symbols )
 {
 if( row && row->SupportsSubLibraries()
 && !subLib.IsSameAs( symbol->GetLibId().GetSubLibraryName() ) )
 {
 continue;
 }
 
 if( !excludes.count( symbol->GetName() ) )
 m_symbolList->Append( UnescapeString( symbol->GetName() ) );
 }
 
 if( m_symbolList->IsEmpty() )
 {
 SetSelectedSymbol( wxEmptyString );
 m_convert = LIB_ITEM::LIB_CONVERT::BASE;
 m_unit = 1;
 return true;
 }
 
 int index = m_symbolList->FindString( UnescapeString( m_currentSymbol.GetUniStringLibItemName() ) );
 bool changed = false;
 
 if( index == wxNOT_FOUND )
 {
 // Select the first library entry when the previous entry name does not exist in
 // the current library.
 m_convert = LIB_ITEM::LIB_CONVERT::BASE;
 m_unit = 1;
 index = -1;
 changed = true;
 SetSelectedSymbol( wxEmptyString );
 }
 
 m_symbolList->SetSelection( index, true );
 
 return changed;
}
 
 
void SYMBOL_VIEWER_FRAME::ClickOnLibList( wxCommandEvent& event )
{
 int ii = m_libList->GetSelection();
 
 if( ii < 0 )
 return;
 
 m_selection_changed = true;
 
 wxString selection = EscapeString( m_libList->GetBaseString( ii ), CTX_LIBID );
 
 if( !Prj().SchSymbolLibTable()->FindRow( selection )
 && selection.Find( '-' ) != wxNOT_FOUND )
 {
 // Probably a sub-library
 wxString sublib;
 selection = selection.BeforeLast( '-', &sublib ).Trim();
 sublib.Trim( false );
 SetSelectedLibrary( selection, sublib );
 }
 else
 {
 SetSelectedLibrary( selection );
 }
}
 
 
void SYMBOL_VIEWER_FRAME::SetSelectedLibrary( const wxString& aLibraryName,
 const wxString& aSubLibName )
{
 if( m_currentSymbol.GetUniStringLibNickname() == aLibraryName &&
 wxString( m_currentSymbol.GetSubLibraryName() ) == aSubLibName )
 return;
 
 m_currentSymbol.SetLibNickname( aLibraryName );
 m_currentSymbol.SetSubLibraryName( aSubLibName );
 ReCreateSymbolList();
 GetCanvas()->Refresh();
 DisplayLibInfos();
 
 // Ensure the corresponding line in m_libList is selected
 // (which is not necessary the case if SetSelectedLibrary is called
 // by another caller than ClickOnLibList.
 m_libList->SetStringSelection( UnescapeString( m_currentSymbol.GetFullLibraryName() ), true );
 
 // The m_libList has now the focus, in order to be able to use arrow keys
 // to navigate inside the list.
 // the gal canvas must not steal the focus to allow navigation
 GetCanvas()->SetStealsFocus( false );
 m_libList->SetFocus();
}
 
 
void SYMBOL_VIEWER_FRAME::ClickOnSymbolList( wxCommandEvent& event )
{
 int ii = m_symbolList->GetSelection();
 
 if( ii < 0 )
 return;
 
 m_selection_changed = true;
 
 SetSelectedSymbol( EscapeString( m_symbolList->GetBaseString( ii ), CTX_LIBID ) );
 
 // The m_symbolList has now the focus, in order to be able to use arrow keys
 // to navigate inside the list.
 // the gal canvas must not steal the focus to allow navigation
 GetCanvas()->SetStealsFocus( false );
 m_symbolList->SetFocus();
}
 
 
void SYMBOL_VIEWER_FRAME::SetSelectedSymbol( const wxString& aSymbolName )
{
 if( m_currentSymbol.GetUniStringLibItemName() != aSymbolName )
 {
 m_currentSymbol.SetLibItemName( aSymbolName );
 
 // Ensure the corresponding line in m_symbolList is selected
 // (which is not necessarily the case if SetSelectedSymbol is called
 // by another caller than ClickOnSymbolList.
 m_symbolList->SetStringSelection( UnescapeString( aSymbolName ), true );
 DisplayLibInfos();
 
 if( m_selection_changed )
 {
 m_unit = 1;
 m_convert = LIB_ITEM::LIB_CONVERT::BASE;
 m_selection_changed = false;
 }
 
 updatePreviewSymbol();
 }
}
 
 
void SYMBOL_VIEWER_FRAME::DClickOnSymbolList( wxCommandEvent& event )
{
 m_toolManager->RunAction( EE_ACTIONS::addSymbolToSchematic, true );
}
 
 
void SYMBOL_VIEWER_FRAME::LoadSettings( APP_SETTINGS_BASE* aCfg )
{
 auto cfg = Pgm().GetSettingsManager().GetAppSettings<EESCHEMA_SETTINGS>();
 
 SCH_BASE_FRAME::LoadSettings( cfg );
 
 // Grid shape, etc.
 GetGalDisplayOptions().ReadWindowSettings( cfg->m_LibViewPanel.window );
 
 m_libListWidth = cfg->m_LibViewPanel.lib_list_width;
 m_symbolListWidth = cfg->m_LibViewPanel.cmp_list_width;
 
 GetRenderSettings()->m_ShowPinsElectricalType = cfg->m_LibViewPanel.show_pin_electrical_type;
 GetRenderSettings()->m_ShowPinNumbers = cfg->m_LibViewPanel.show_pin_numbers;
 
 // Set parameters to a reasonable value.
 int maxWidth = cfg->m_LibViewPanel.window.state.size_x - 80;
 
 if( m_libListWidth + m_symbolListWidth > maxWidth )
 {
 m_libListWidth = maxWidth * ( m_libListWidth / ( m_libListWidth + m_symbolListWidth ) );
 m_symbolListWidth = maxWidth - m_libListWidth;
 }
}
 
 
void SYMBOL_VIEWER_FRAME::SaveSettings( APP_SETTINGS_BASE* aCfg)
{
 EESCHEMA_SETTINGS* cfg = Pgm().GetSettingsManager().GetAppSettings<EESCHEMA_SETTINGS>();
 
 SCH_BASE_FRAME::SaveSettings( cfg );
 
 if( m_libListWidth && m_libList )
 m_libListWidth = m_libList->GetSize().x;
 
 m_symbolListWidth = m_symbolList->GetSize().x;
 
 cfg->m_LibViewPanel.lib_list_width = m_libListWidth;
 cfg->m_LibViewPanel.cmp_list_width = m_symbolListWidth;
 
 if( KIGFX::SCH_RENDER_SETTINGS* renderSettings = GetRenderSettings() )
 {
 cfg->m_LibViewPanel.show_pin_electrical_type = renderSettings->m_ShowPinsElectricalType;
 cfg->m_LibViewPanel.show_pin_numbers = renderSettings->m_ShowPinNumbers;
 }
}
 
 
WINDOW_SETTINGS* SYMBOL_VIEWER_FRAME::GetWindowSettings( APP_SETTINGS_BASE* aCfg )
{
 auto cfg = dynamic_cast<EESCHEMA_SETTINGS*>( aCfg );
 wxASSERT( cfg );
 return &cfg->m_LibViewPanel.window;
}
 
 
void SYMBOL_VIEWER_FRAME::CommonSettingsChanged( bool aEnvVarsChanged, bool aTextVarsChanged )
{
 SCH_BASE_FRAME::CommonSettingsChanged( aEnvVarsChanged, aTextVarsChanged );
 
 auto cfg = Pgm().GetSettingsManager().GetAppSettings<EESCHEMA_SETTINGS>();
 GetGalDisplayOptions().ReadWindowSettings( cfg->m_LibViewPanel.window );
 
 GetCanvas()->GetGAL()->SetAxesColor( m_colorSettings->GetColor( LAYER_SCHEMATIC_GRID_AXES ) );
 GetCanvas()->GetGAL()->DrawGrid();
 GetCanvas()->ForceRefresh();
 
 if( aEnvVarsChanged )
 ReCreateLibList();
}
 
 
void SYMBOL_VIEWER_FRAME::OnActivate( wxActivateEvent& event )
{
 if( event.GetActive() )
 {
 bool changed = m_libList ? ReCreateLibList() : false;
 
 if (changed)
 m_selection_changed = true;
 
 updatePreviewSymbol();
 
 DisplayLibInfos();
 }
 
 event.Skip(); // required under wxMAC
}
 
 
void SYMBOL_VIEWER_FRAME::CloseLibraryViewer( wxCommandEvent& event )
{
 Close();
}
 
 
void SYMBOL_VIEWER_FRAME::SetFilter( const SYMBOL_LIBRARY_FILTER* aFilter )
{
 m_listPowerOnly = false;
 m_allowedLibs.Clear();
 
 if( aFilter )
 {
 m_allowedLibs = aFilter->GetAllowedLibList();
 m_listPowerOnly = aFilter->GetFilterPowerSymbols();
 }
 
 ReCreateLibList();
}
 
 
const BOX2I SYMBOL_VIEWER_FRAME::GetDocumentExtents( bool aIncludeAllVisible ) const
{
 LIB_SYMBOL* symbol = GetSelectedSymbol();
 
 if( !symbol )
 {
 return BOX2I( VECTOR2I( -200, -200 ), VECTOR2I( 400, 400 ) );
 }
 else
 {
 std::shared_ptr<LIB_SYMBOL> tmp = symbol->IsAlias() ? symbol->GetParent().lock()
 : symbol->SharedPtr();
 
 wxCHECK( tmp, BOX2I( VECTOR2I( -200, -200 ), VECTOR2I( 400, 400 ) ) );
 
 return tmp->GetUnitBoundingBox( m_unit, m_convert );
 }
}
 
 
void SYMBOL_VIEWER_FRAME::FinishModal()
{
 if( m_symbolList->GetSelection() >= 0 )
 {
 DismissModal( true, m_currentSymbol.Format() );
 }
 else
 {
 DismissModal( false );
 }
 
 Close( true );
}
 
 
void SYMBOL_VIEWER_FRAME::OnSelectSymbol( wxCommandEvent& aEvent )
{
 std::unique_lock<std::mutex> dialogLock( DIALOG_CHOOSE_SYMBOL::g_Mutex, std::defer_lock );
 
 // One CHOOSE_SYMBOL dialog at a time. User probably can't handle more anyway.
 if( !dialogLock.try_lock() )
 return;
 
 // Container doing search-as-you-type.
 SYMBOL_LIB_TABLE* libs = Prj().SchSymbolLibTable();
 wxObjectDataPtr<LIB_TREE_MODEL_ADAPTER> dataPtr
 = SYMBOL_TREE_MODEL_ADAPTER::Create( this, libs );
 SYMBOL_TREE_MODEL_ADAPTER* modelAdapter
 = static_cast<SYMBOL_TREE_MODEL_ADAPTER*>( dataPtr.get() );
 
 if( !modelAdapter->AddLibraries( libs->GetLogicalLibs(), this ) )
 {
 // loading cancelled by user
 return;
 }
 
 LIB_SYMBOL* current = GetSelectedSymbol();
 LIB_ID id;
 int unit = 0;
 
 if( current )
 {
 id = current->GetLibId();
 modelAdapter->SetPreselectNode( id, unit );
 }
 
 wxString dialogTitle;
 dialogTitle.Printf( _( "Choose Symbol (%d items loaded)" ), modelAdapter->GetItemCount() );
 
 DIALOG_CHOOSE_SYMBOL dlg( this, dialogTitle, dataPtr, m_convert, false, false, false );
 
 if( dlg.ShowQuasiModal() == wxID_CANCEL )
 return;
 
 // Save any changes to column widths, etc.
 modelAdapter->SaveSettings();
 
 id = dlg.GetSelectedLibId( &unit );
 
 if( !id.IsValid() )
 return;
 
 SetSelectedLibrary( id.GetLibNickname(), id.GetSubLibraryName() );
 SetSelectedSymbol( id.GetLibItemName() );
 SetUnitAndConvert( unit, 1 );
}
 
 
void SYMBOL_VIEWER_FRAME::OnLibFilter( wxCommandEvent& aEvent )
{
 ReCreateLibList();
 
 // Required to avoid interaction with SetHint()
 // See documentation for wxTextEntry::SetHint
 aEvent.Skip();
}
 
 
void SYMBOL_VIEWER_FRAME::OnSymFilter( wxCommandEvent& aEvent )
{
 ReCreateSymbolList();
 
 // Required to avoid interaction with SetHint()
 // See documentation for wxTextEntry::SetHint
 aEvent.Skip();
}
 
 
void SYMBOL_VIEWER_FRAME::OnCharHook( wxKeyEvent& aEvent )
{
 if( aEvent.GetKeyCode() == WXK_UP )
 {
 if( m_libFilter->HasFocus() || m_libList->HasFocus() )
 {
 int prev = m_libList->GetSelection() - 1;
 
 if( prev >= 0 )
 {
 m_libList->SetSelection( prev );
 m_libList->EnsureVisible( prev );
 
 wxCommandEvent dummy;
 ClickOnLibList( dummy );
 }
 }
 else
 {
 wxCommandEvent dummy;
 onSelectPreviousSymbol( dummy );
 }
 }
 else if( aEvent.GetKeyCode() == WXK_DOWN )
 {
 if( m_libFilter->HasFocus() || m_libList->HasFocus() )
 {
 int next = m_libList->GetSelection() + 1;
 
 if( next < (int)m_libList->GetCount() )
 {
 m_libList->SetSelection( next );
 m_libList->EnsureVisible( next );
 
 wxCommandEvent dummy;
 ClickOnLibList( dummy );
 }
 }
 else
 {
 wxCommandEvent dummy;
 onSelectNextSymbol( dummy );
 }
 }
 else if( aEvent.GetKeyCode() == WXK_TAB && m_libFilter->HasFocus() )
 {
 if( !aEvent.ShiftDown() )
 m_symbolFilter->SetFocus();
 else
 aEvent.Skip();
 }
 else if( aEvent.GetKeyCode() == WXK_TAB && m_symbolFilter->HasFocus() )
 {
 if( aEvent.ShiftDown() )
 m_libFilter->SetFocus();
 else
 aEvent.Skip();
 }
 else if( aEvent.GetKeyCode() == WXK_RETURN && m_symbolList->GetSelection() >= 0 )
 {
 wxCommandEvent dummy;
 DClickOnSymbolList( dummy );
 }
 else
 {
 aEvent.Skip();
 }
}
 
 
void SYMBOL_VIEWER_FRAME::onSelectNextSymbol( wxCommandEvent& aEvent )
{
 wxCommandEvent evt( wxEVT_COMMAND_LISTBOX_SELECTED, ID_LIBVIEW_SYM_LIST );
 int ii = m_symbolList->GetSelection();
 
 // Select the next symbol or stop at the end of the list.
 if( ii != wxNOT_FOUND || ii != (int) m_symbolList->GetCount() - 1 )
 ii += 1;
 
 m_symbolList->SetSelection( ii );
 ProcessEvent( evt );
}
 
 
void SYMBOL_VIEWER_FRAME::onSelectPreviousSymbol( wxCommandEvent& aEvent )
{
 wxCommandEvent evt( wxEVT_COMMAND_LISTBOX_SELECTED, ID_LIBVIEW_SYM_LIST );
 int ii = m_symbolList->GetSelection();
 
 // Select the previous symbol or stop at the beginning of list.
 if( ii != wxNOT_FOUND && ii != 0 )
 ii -= 1;
 
 m_symbolList->SetSelection( ii );
 ProcessEvent( evt );
}
 
 
void SYMBOL_VIEWER_FRAME::onSelectSymbolUnit( wxCommandEvent& aEvent )
{
 int ii = m_unitChoice->GetSelection();
 
 if( ii < 0 )
 return;
 
 m_unit = ii + 1;
 
 updatePreviewSymbol();
}
 
 
void SYMBOL_VIEWER_FRAME::DisplayLibInfos()
{
 wxString libName = m_currentSymbol.GetUniStringLibNickname();
 
 if( m_libList && !m_libList->IsEmpty() && !libName.IsEmpty() )
 {
 const SYMBOL_LIB_TABLE_ROW* row =
 Prj().SchSymbolLibTable()->FindRow( libName, true );
 
 wxString title = row ? row->GetFullURI( true ) : _( "[no library selected]" );
 
 title += wxT( " \u2014 " ) + _( "Symbol Library Browser" );
 SetTitle( title );
 }
}
 
 
SELECTION& SYMBOL_VIEWER_FRAME::GetCurrentSelection()
{
 return m_toolManager->GetTool<EE_SELECTION_TOOL>()->GetSelection();
}