/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2018 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr
 * Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
 * Copyright (C) 2011 Wayne Stambaugh <stambaughw@verizon.net>
 * Copyright (C) 1992-2020 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 <fctsys.h>
#include <kiface_i.h>
#include <eda_base_frame.h>
#include <confirm.h>
#include <kiface_i.h>
#include <dialog_helpers.h>
#include <pcb_base_frame.h>
#include <base_units.h>
#include <msgpanel.h>
#include <pgm_base.h>
#include <3d_viewer/eda_3d_viewer.h>          // To include VIEWER3D_FRAMENAME
#include <pcbnew.h>
#include <fp_lib_table.h>
#include <pcbnew_id.h>
#include <class_board.h>
#include <class_track.h>
#include <class_module.h>
#include <class_drawsegment.h>
#include <collectors.h>
#include <pcb_draw_panel_gal.h>
#include <pcb_view.h>
#include <math/vector2d.h>
#include <trigo.h>
#include <pcb_painter.h>
#include <settings/settings_manager.h>
#include <pcbnew_settings.h>
#include <tool/tool_manager.h>
#include <tool/tool_dispatcher.h>
#include <tools/pcb_actions.h>


BEGIN_EVENT_TABLE( PCB_BASE_FRAME, EDA_DRAW_FRAME )
    EVT_TOOL( ID_TB_OPTIONS_SHOW_PADS_SKETCH, PCB_BASE_FRAME::OnTogglePadDrawMode )
    EVT_TOOL( ID_TB_OPTIONS_SHOW_GRAPHIC_SKETCH, PCB_BASE_FRAME::OnToggleGraphicDrawMode )
    EVT_TOOL( ID_TB_OPTIONS_SHOW_MODULE_EDGE_SKETCH, PCB_BASE_FRAME::OnToggleEdgeDrawMode )
    EVT_TOOL( ID_TB_OPTIONS_SHOW_MODULE_TEXT_SKETCH, PCB_BASE_FRAME::OnToggleTextDrawMode )

    EVT_UPDATE_UI( ID_ON_GRID_SELECT, PCB_BASE_FRAME::OnUpdateSelectGrid )
    EVT_UPDATE_UI( ID_ON_ZOOM_SELECT, PCB_BASE_FRAME::OnUpdateSelectZoom )
END_EVENT_TABLE()


PCB_BASE_FRAME::PCB_BASE_FRAME( KIWAY* aKiway, wxWindow* aParent, FRAME_T aFrameType,
        const wxString& aTitle, const wxPoint& aPos, const wxSize& aSize,
        long aStyle, const wxString & aFrameName ) :
    EDA_DRAW_FRAME( aKiway, aParent, aFrameType, aTitle, aPos, aSize, aStyle, aFrameName ),
    m_Pcb( nullptr )
{
    m_UserGridSize        = wxPoint( (int) 10 * IU_PER_MILS, (int) 10 * IU_PER_MILS );

    m_FastGrid1           = 0;
    m_FastGrid2           = 0;

    m_zoomLevelCoeff      = 11.0 * IU_PER_MILS;  // Adjusted to roughly displays zoom level = 1
                                        // when the screen shows a 1:1 image
                                        // obviously depends on the monitor,
                                        // but this is an acceptable value

    m_Settings = static_cast<PCBNEW_SETTINGS*>( Kiface().KifaceSettings() );
}


PCB_BASE_FRAME::~PCB_BASE_FRAME()
{
    // Ensure m_canvasType is up to date, to save it in config
    m_canvasType = GetCanvas()->GetBackend();

    delete m_Pcb;
}


EDA_3D_VIEWER* PCB_BASE_FRAME::Get3DViewerFrame()
{
    return dynamic_cast<EDA_3D_VIEWER*>( FindWindowByName( QUALIFIED_VIEWER3D_FRAMENAME( this ) ) );
}


void PCB_BASE_FRAME::Update3DView( bool aForceReload, const wxString* aTitle )
{
    EDA_3D_VIEWER* draw3DFrame = Get3DViewerFrame();

    if( draw3DFrame )
    {
        if( aTitle )
            draw3DFrame->SetTitle( *aTitle );

        draw3DFrame->NewDisplay( aForceReload );
    }
}


FP_LIB_TABLE* PROJECT::PcbFootprintLibs()
{
    // This is a lazy loading function, it loads the project specific table when
    // that table is asked for, not before.

    FP_LIB_TABLE*   tbl = (FP_LIB_TABLE*) GetElem( ELEM_FPTBL );

    // its gotta be NULL or a FP_LIB_TABLE, or a bug.
    wxASSERT( !tbl || tbl->Type() == FP_LIB_TABLE_T );

    if( !tbl )
    {
        // Stack the project specific FP_LIB_TABLE overlay on top of the global table.
        // ~FP_LIB_TABLE() will not touch the fallback table, so multiple projects may
        // stack this way, all using the same global fallback table.
        tbl = new FP_LIB_TABLE( &GFootprintTable );

        SetElem( ELEM_FPTBL, tbl );

        wxString projectFpLibTableFileName = FootprintLibTblName();

        try
        {
            tbl->Load( projectFpLibTableFileName );
        }
        catch( const IO_ERROR& ioe )
        {
            DisplayErrorMessage( nullptr, _( "Error loading project footprint libraries" ),
                                 ioe.What() );
        }
    }

    return tbl;
}


void PCB_BASE_FRAME::SetBoard( BOARD* aBoard )
{
    if( m_Pcb != aBoard )
    {
        delete m_Pcb;
        m_Pcb = aBoard;
        m_Pcb->SetGeneralSettings( m_Settings );
    }
}


void PCB_BASE_FRAME::AddModuleToBoard( MODULE* module )
{
    if( module )
    {
        GetBoard()->Add( module, ADD_MODE::APPEND );

        module->SetFlags( IS_NEW );
        module->SetPosition( wxPoint( 0, 0 ) ); // cursor in GAL may not be initialized yet

        // Put it on FRONT layer (note that it might be stored flipped if the lib is an archive
        // built from a board)
        if( module->IsFlipped() )
            module->Flip( module->GetPosition(), m_Settings->m_FlipLeftRight );

        // Place it in orientation 0 even if it is not saved with orientation 0 in lib (note that
        // it might be stored in another orientation if the lib is an archive built from a board)
        module->SetOrientation( 0 );
    }
}


void PCB_BASE_FRAME::FocusOnItem( BOARD_ITEM* aItem )
{
    static KIID lastBrightenedItemID( niluuid );

    BOARD_ITEM* lastItem = GetBoard()->GetItem( lastBrightenedItemID );

    if( lastItem && lastItem != aItem )
    {
        lastItem->ClearBrightened();

        if( lastItem->Type() == PCB_MODULE_T )
        {
            static_cast<MODULE*>( lastItem )->RunOnChildren( [&] ( BOARD_ITEM* child )
            {
                child->ClearBrightened();
            });
        }

        GetCanvas()->GetView()->Update( lastItem );
        lastBrightenedItemID = niluuid;
        GetCanvas()->Refresh();
    }

    if( aItem )
    {
        aItem->SetBrightened();

        if( aItem->Type() == PCB_MODULE_T )
        {
            static_cast<MODULE*>( aItem )->RunOnChildren( [&] ( BOARD_ITEM* child )
            {
                child->SetBrightened();
            });
        }

        GetCanvas()->GetView()->Update( aItem );
        lastBrightenedItemID = aItem->m_Uuid;
        FocusOnLocation( aItem->GetPosition() );
        GetCanvas()->Refresh();
    }
}


void PCB_BASE_FRAME::SetPageSettings( const PAGE_INFO& aPageSettings )
{
    wxASSERT( m_Pcb );
    m_Pcb->SetPageSettings( aPageSettings );

    if( GetScreen() )
        GetScreen()->InitDataPoints( aPageSettings.GetSizeIU() );
}


const PAGE_INFO& PCB_BASE_FRAME::GetPageSettings() const
{
    wxASSERT( m_Pcb );
    return m_Pcb->GetPageSettings();
}


const wxSize PCB_BASE_FRAME::GetPageSizeIU() const
{
    wxASSERT( m_Pcb );

    // this function is only needed because EDA_DRAW_FRAME is not compiled
    // with either -DPCBNEW or -DEESCHEMA, so the virtual is used to route
    // into an application specific source file.
    return m_Pcb->GetPageSettings().GetSizeIU();
}


const wxPoint& PCB_BASE_FRAME::GetAuxOrigin() const
{
    wxASSERT( m_Pcb );
    return m_Pcb->GetAuxOrigin();
}


void PCB_BASE_FRAME::SetAuxOrigin( const wxPoint& aPoint )
{
    wxASSERT( m_Pcb );
    m_Pcb->SetAuxOrigin( aPoint );
}


const wxPoint& PCB_BASE_FRAME::GetGridOrigin() const
{
    wxASSERT( m_Pcb );
    return m_Pcb->GetGridOrigin();
}


void PCB_BASE_FRAME::SetGridOrigin( const wxPoint& aPoint )
{
    wxASSERT( m_Pcb );
    m_Pcb->SetGridOrigin( aPoint );
}


const TITLE_BLOCK& PCB_BASE_FRAME::GetTitleBlock() const
{
    wxASSERT( m_Pcb );
    return m_Pcb->GetTitleBlock();
}


void PCB_BASE_FRAME::SetTitleBlock( const TITLE_BLOCK& aTitleBlock )
{
    wxASSERT( m_Pcb );
    m_Pcb->SetTitleBlock( aTitleBlock );
}


BOARD_DESIGN_SETTINGS& PCB_BASE_FRAME::GetDesignSettings() const
{
    wxASSERT( m_Pcb );
    return m_Pcb->GetDesignSettings();
}


void PCB_BASE_FRAME::SetDesignSettings( const BOARD_DESIGN_SETTINGS& aSettings )
{
    wxASSERT( m_Pcb );
    m_Pcb->SetDesignSettings( aSettings );
}


COLOR_SETTINGS* PCB_BASE_FRAME::ColorSettings()
{
    return Pgm().GetSettingsManager().GetColorSettings();
}


void PCB_BASE_FRAME::SetDrawBgColor( COLOR4D aColor )
{
    m_drawBgColor= aColor;
    m_auimgr.Update();
}


const ZONE_SETTINGS& PCB_BASE_FRAME::GetZoneSettings() const
{
    wxASSERT( m_Pcb );
    return m_Pcb->GetZoneSettings();
}


void PCB_BASE_FRAME::SetZoneSettings( const ZONE_SETTINGS& aSettings )
{
    wxASSERT( m_Pcb );
    m_Pcb->SetZoneSettings( aSettings );
}


const PCB_PLOT_PARAMS& PCB_BASE_FRAME::GetPlotSettings() const
{
    wxASSERT( m_Pcb );
    return m_Pcb->GetPlotOptions();
}


void PCB_BASE_FRAME::SetPlotSettings( const PCB_PLOT_PARAMS& aSettings )
{
    wxASSERT( m_Pcb );
    m_Pcb->SetPlotOptions( aSettings );
}


EDA_RECT PCB_BASE_FRAME::GetBoardBoundingBox( bool aBoardEdgesOnly ) const
{
    wxASSERT( m_Pcb );

    EDA_RECT area = aBoardEdgesOnly ? m_Pcb->GetBoardEdgesBoundingBox() : m_Pcb->GetBoundingBox();

    if( area.GetWidth() == 0 && area.GetHeight() == 0 )
    {
        wxSize pageSize = GetPageSizeIU();

        if( m_showBorderAndTitleBlock )
        {
            area.SetOrigin( 0, 0 );
            area.SetEnd( pageSize.x, pageSize.y );
        }
        else
        {
            area.SetOrigin( -pageSize.x / 2, -pageSize.y / 2 );
            area.SetEnd( pageSize.x / 2, pageSize.y / 2 );
        }
    }

    return area;
}


// Virtual function
void PCB_BASE_FRAME::ReCreateMenuBar()
{
}


void PCB_BASE_FRAME::ShowChangedLanguage()
{
    // call my base class
    EDA_DRAW_FRAME::ShowChangedLanguage();

    // tooltips in toolbars
    RecreateToolbars();

    // status bar
    UpdateMsgPanel();
}


EDA_3D_VIEWER* PCB_BASE_FRAME::CreateAndShow3D_Frame()
{
    EDA_3D_VIEWER* draw3DFrame = Get3DViewerFrame();

    if( !draw3DFrame )
        draw3DFrame = new EDA_3D_VIEWER( &Kiway(), this, _( "3D Viewer" ) );

    // Raising the window does not show the window on Windows if iconized. This should work
    // on any platform.
    if( draw3DFrame->IsIconized() )
         draw3DFrame->Iconize( false );

    draw3DFrame->Raise();
    draw3DFrame->Show( true );

    // Raising the window does not set the focus on Linux.  This should work on any platform.
    if( wxWindow::FindFocus() != draw3DFrame )
        draw3DFrame->SetFocus();

    return draw3DFrame;
}


// Note: virtual, overridden in PCB_EDIT_FRAME;
void PCB_BASE_FRAME::SwitchLayer( wxDC* DC, PCB_LAYER_ID layer )
{
    PCB_LAYER_ID preslayer = GetActiveLayer();
    auto& displ_opts = GetDisplayOptions();

    // Check if the specified layer matches the present layer
    if( layer == preslayer )
        return;

    // Copper layers cannot be selected unconditionally; how many of those layers are
    // currently enabled needs to be checked.
    if( IsCopperLayer( layer ) )
    {
        // If only one copper layer is enabled, the only such layer that can be selected to
        // is the "Copper" layer (so the selection of any other copper layer is disregarded).
        if( m_Pcb->GetCopperLayerCount() < 2 )
        {
            if( layer != B_Cu )
                return;
        }

        // If more than one copper layer is enabled, the "Copper" and "Component" layers
        // can be selected, but the total number of copper layers determines which internal
        // layers are also capable of being selected.
        else
        {
            if( layer != B_Cu && layer != F_Cu && layer >= ( m_Pcb->GetCopperLayerCount() - 1 ) )
                return;
        }
    }

    // Is yet more checking required? E.g. when the layer to be selected is a non-copper
    // layer, or when switching between a copper layer and a non-copper layer, or vice-versa?
    // ...

    SetActiveLayer( layer );

    if( displ_opts.m_ContrastModeDisplay )
        GetCanvas()->Refresh();
}


void PCB_BASE_FRAME::OnTogglePadDrawMode( wxCommandEvent& aEvent )
{
    auto displ_opts = GetDisplayOptions();

    displ_opts.m_DisplayPadFill = !displ_opts.m_DisplayPadFill;

    if( GetCanvas() )
    {
        // Apply new display options to the GAL canvas
        auto view = static_cast<KIGFX::PCB_VIEW*>( GetCanvas()->GetView() );
        view->UpdateDisplayOptions( displ_opts );

        // Update pads
        BOARD* board = GetBoard();
        for( auto module : board->Modules() )
        {
            for( auto pad : module->Pads() )
                view->Update( pad, KIGFX::GEOMETRY );
        }
    }

    SetDisplayOptions( displ_opts );
    GetCanvas()->Refresh();
}


void PCB_BASE_FRAME::OnToggleGraphicDrawMode( wxCommandEvent& aEvent )
{
    auto displ_opts = GetDisplayOptions();
    displ_opts.m_DisplayDrawItemsFill = !displ_opts.m_DisplayDrawItemsFill;
    SetDisplayOptions( displ_opts );
    GetCanvas()->Refresh();
}


void PCB_BASE_FRAME::OnToggleEdgeDrawMode( wxCommandEvent& aEvent )
{
    auto displ_opts = GetDisplayOptions();
    displ_opts.m_DisplayModEdgeFill = !displ_opts.m_DisplayModEdgeFill;

    if( GetCanvas() )
    {
        // Apply new display options to the GAL canvas
        auto view = static_cast<KIGFX::PCB_VIEW*>( GetCanvas()->GetView() );
        view->UpdateDisplayOptions( displ_opts );
        view->MarkTargetDirty( KIGFX::TARGET_NONCACHED );
    }

    SetDisplayOptions( displ_opts );
    GetCanvas()->Refresh();
}


void PCB_BASE_FRAME::OnToggleTextDrawMode( wxCommandEvent& aEvent )
{
    auto displ_opts = GetDisplayOptions();
    displ_opts.m_DisplayModTextFill = !displ_opts.m_DisplayModTextFill;

    if( GetCanvas() )
    {
        // Apply new display options to the canvas
        auto view = static_cast<KIGFX::PCB_VIEW*>( GetCanvas()->GetView() );
        view->UpdateDisplayOptions( displ_opts );
        view->MarkTargetDirty( KIGFX::TARGET_NONCACHED );
    }

    SetDisplayOptions( displ_opts );
    GetCanvas()->Refresh();
}


void PCB_BASE_FRAME::OnUpdateSelectZoom( wxUpdateUIEvent& aEvent )
{
    if( m_zoomSelectBox == NULL || m_zoomSelectBox->GetParent() == NULL )
        return;

    int current = 0;    // display Auto if no match found

    // check for a match within 1%
    double zoom = GetCanvas()->GetLegacyZoom();

    for( unsigned i = 0; i < GetScreen()->m_ZoomList.size(); i++ )
    {
        if( std::fabs( zoom - GetScreen()->m_ZoomList[i] ) < ( zoom / 100.0 ) )
        {
            current = i + 1;
            break;
        }
    }

    if( current != m_zoomSelectBox->GetSelection() )
        m_zoomSelectBox->SetSelection( current );
}


GENERAL_COLLECTORS_GUIDE PCB_BASE_FRAME::GetCollectorsGuide()
{
    GENERAL_COLLECTORS_GUIDE guide( m_Pcb->GetVisibleLayers(), GetActiveLayer(),
                                    GetCanvas()->GetView() );

    // account for the globals
    guide.SetIgnoreMTextsMarkedNoShow( ! m_Pcb->IsElementVisible( LAYER_MOD_TEXT_INVISIBLE ) );
    guide.SetIgnoreMTextsOnBack( ! m_Pcb->IsElementVisible( LAYER_MOD_TEXT_BK ) );
    guide.SetIgnoreMTextsOnFront( ! m_Pcb->IsElementVisible( LAYER_MOD_TEXT_FR ) );
    guide.SetIgnoreModulesOnBack( ! m_Pcb->IsElementVisible( LAYER_MOD_BK ) );
    guide.SetIgnoreModulesOnFront( ! m_Pcb->IsElementVisible( LAYER_MOD_FR ) );
    guide.SetIgnorePadsOnBack( ! m_Pcb->IsElementVisible( LAYER_PAD_BK ) );
    guide.SetIgnorePadsOnFront( ! m_Pcb->IsElementVisible( LAYER_PAD_FR ) );
    guide.SetIgnoreThroughHolePads( ! m_Pcb->IsElementVisible( LAYER_PADS_TH ) );
    guide.SetIgnoreModulesVals( ! m_Pcb->IsElementVisible( LAYER_MOD_VALUES ) );
    guide.SetIgnoreModulesRefs( ! m_Pcb->IsElementVisible( LAYER_MOD_REFERENCES ) );
    guide.SetIgnoreThroughVias( ! m_Pcb->IsElementVisible( LAYER_VIA_THROUGH ) );
    guide.SetIgnoreBlindBuriedVias( ! m_Pcb->IsElementVisible( LAYER_VIA_BBLIND ) );
    guide.SetIgnoreMicroVias( ! m_Pcb->IsElementVisible( LAYER_VIA_MICROVIA ) );
    guide.SetIgnoreTracks( ! m_Pcb->IsElementVisible( LAYER_TRACKS ) );

    return guide;
}


/*
 * Display the grid status.
 */
void PCB_BASE_FRAME::DisplayGridMsg()
{
    wxString line;
    wxString gridformatter;

    switch( m_userUnits )
    {
    case EDA_UNITS::INCHES:
        gridformatter = "grid X %.6f  Y %.6f";
        break;

    case EDA_UNITS::MILLIMETRES:
        gridformatter = "grid X %.6f  Y %.6f";
        break;

    default:
        gridformatter = "grid X %f  Y %f";
        break;
    }

    BASE_SCREEN* screen = GetScreen();
    wxArrayString gridsList;

    int        icurr = screen->BuildGridsChoiceList( gridsList, m_userUnits != EDA_UNITS::INCHES );
    GRID_TYPE& grid = screen->GetGrid( icurr );
    double grid_x = To_User_Unit( m_userUnits, grid.m_Size.x );
    double grid_y = To_User_Unit( m_userUnits, grid.m_Size.y );
    line.Printf( gridformatter, grid_x, grid_y );

    SetStatusText( line, 4 );
}


/*
 * Update the status bar information.
 */
void PCB_BASE_FRAME::UpdateStatusBar()
{
    EDA_DRAW_FRAME::UpdateStatusBar();

    BASE_SCREEN* screen = GetScreen();

    if( !screen )
        return;

    wxString line;
    VECTOR2D cursorPos = GetCanvas()->GetViewControls()->GetCursorPosition();

    if( GetShowPolarCoords() )  // display polar coordinates
    {
        double   dx = cursorPos.x - screen->m_LocalOrigin.x;
        double   dy = cursorPos.y - screen->m_LocalOrigin.y;
        double   theta = RAD2DEG( atan2( -dy, dx ) );
        double   ro = hypot( dx, dy );
        wxString formatter;

        switch( GetUserUnits() )
        {
        case EDA_UNITS::INCHES:
            formatter = wxT( "r %.6f  theta %.1f" );
            break;
        case EDA_UNITS::MILLIMETRES:
            formatter = wxT( "r %.6f  theta %.1f" );
            break;
        case EDA_UNITS::UNSCALED:
            formatter = wxT( "r %f  theta %f" );
            break;
        default:             wxASSERT( false );                       break;
        }

        line.Printf( formatter, To_User_Unit( GetUserUnits(), ro ), theta );

        SetStatusText( line, 3 );
    }

    // Display absolute coordinates:
    double dXpos = To_User_Unit( GetUserUnits(), cursorPos.x );
    double dYpos = To_User_Unit( GetUserUnits(), cursorPos.y );

    // The following sadly is an if Eeschema/if Pcbnew
    wxString absformatter;
    wxString locformatter;

    switch( GetUserUnits() )
    {
    case EDA_UNITS::INCHES:
        absformatter = "X %.6f  Y %.6f";
        locformatter = "dx %.6f  dy %.6f  dist %.4f";
        break;

    case EDA_UNITS::MILLIMETRES:
        absformatter = "X %.6f  Y %.6f";
        locformatter = "dx %.6f  dy %.6f  dist %.3f";
        break;

    case EDA_UNITS::UNSCALED:
        absformatter = "X %f  Y %f";
        locformatter = "dx %f  dy %f  dist %f";
        break;

    default:
        wxASSERT( false );
        break;
    }

    line.Printf( absformatter, dXpos, dYpos );
    SetStatusText( line, 2 );

    if( !GetShowPolarCoords() )  // display relative cartesian coordinates
    {
        // Display relative coordinates:
        dXpos = To_User_Unit( GetUserUnits(), cursorPos.x - screen->m_LocalOrigin.x );
        dYpos = To_User_Unit( GetUserUnits(), cursorPos.y - screen->m_LocalOrigin.y );

        // We already decided the formatter above
        line.Printf( locformatter, dXpos, dYpos, hypot( dXpos, dYpos ) );
        SetStatusText( line, 3 );
    }

    DisplayGridMsg();
}


void PCB_BASE_FRAME::unitsChangeRefresh()
{
    EDA_DRAW_FRAME::unitsChangeRefresh();    // Update the status bar.

    UpdateGridSelectBox();
}


void PCB_BASE_FRAME::LoadSettings( APP_SETTINGS_BASE* aCfg )
{
    EDA_DRAW_FRAME::LoadSettings( aCfg );

    auto cfg = dynamic_cast<PCBNEW_SETTINGS*>( aCfg );
    wxCHECK( cfg, /*void*/ );

    // Ensure grid id is an existent grid id:
    if( (m_LastGridSizeId <= 0) ||
        (m_LastGridSizeId > (ID_POPUP_GRID_USER - ID_POPUP_GRID_LEVEL_1000)) )
        m_LastGridSizeId = ID_POPUP_GRID_LEVEL_500 - ID_POPUP_GRID_LEVEL_1000;

    EDA_UNITS userGridUnits = static_cast<EDA_UNITS>( cfg->m_UserGrid.units );
    m_UserGridSize.x = (int) From_User_Unit( userGridUnits, cfg->m_UserGrid.size_x );
    m_UserGridSize.y = (int) From_User_Unit( userGridUnits, cfg->m_UserGrid.size_y );

    m_DisplayOptions = cfg->m_Display;
    m_PolarCoords = cfg->m_PolarCoords;

    m_FastGrid1 = cfg->m_FastGrid1;
    m_FastGrid2 = cfg->m_FastGrid2;
}


void PCB_BASE_FRAME::SaveSettings( APP_SETTINGS_BASE* aCfg )
{
    EDA_DRAW_FRAME::SaveSettings( aCfg );

    auto cfg = dynamic_cast<PCBNEW_SETTINGS*>( aCfg );
    wxCHECK( cfg, /*void*/ );

    cfg->m_UserGrid.size_x = To_User_Unit( m_userUnits, m_UserGridSize.x );
    cfg->m_UserGrid.size_y = To_User_Unit( m_userUnits, m_UserGridSize.y );
    cfg->m_UserGrid.units = static_cast<int>( m_userUnits );

    cfg->m_Display = m_DisplayOptions;
    cfg->m_PolarCoords = m_PolarCoords;

    cfg->m_FastGrid1 = m_FastGrid1;
    cfg->m_FastGrid2 = m_FastGrid2;
}


PCBNEW_SETTINGS* PCB_BASE_FRAME::GetSettings()
{
    return Pgm().GetSettingsManager().GetAppSettings<PCBNEW_SETTINGS>();
}


void PCB_BASE_FRAME::CommonSettingsChanged( bool aEnvVarsChanged )
{
    EDA_DRAW_FRAME::CommonSettingsChanged( aEnvVarsChanged );

    RecreateToolbars();

    // The 3D viewer isn't in the Kiway, so send its update manually
    EDA_3D_VIEWER* viewer = Get3DViewerFrame();

    if( viewer )
        viewer->CommonSettingsChanged( aEnvVarsChanged );
}


void PCB_BASE_FRAME::OnModify()
{
    GetScreen()->SetModify();
    GetScreen()->SetSave();

    UpdateStatusBar();
    UpdateMsgPanel();
}


const wxString PCB_BASE_FRAME::GetZoomLevelIndicator() const
{
    return EDA_DRAW_FRAME::GetZoomLevelIndicator();
}


void PCB_BASE_FRAME::UpdateGridSelectBox()
{
    UpdateStatusBar();
    DisplayUnitsMsg();

    if( m_gridSelectBox == NULL )
        return;

    // Update grid values with the current units setting.
    m_gridSelectBox->Clear();
    wxArrayString gridsList;
    int icurr = GetScreen()->BuildGridsChoiceList( gridsList, GetUserUnits() != EDA_UNITS::INCHES );

    for( size_t i = 0; i < GetScreen()->GetGridCount(); i++ )
    {
        GRID_TYPE& grid = GetScreen()->GetGrid( i );
        m_gridSelectBox->Append( gridsList[i], (void*) &grid.m_CmdId );
    }

    m_gridSelectBox->Append( wxT( "---" ) );
    m_gridSelectBox->Append( _( "Edit User Grid..." ) );

    m_gridSelectBox->SetSelection( icurr );
}


void PCB_BASE_FRAME::updateZoomSelectBox()
{
    if( m_zoomSelectBox == NULL )
        return;

    wxString msg;

    m_zoomSelectBox->Clear();
    m_zoomSelectBox->Append( _( "Zoom Auto" ) );
    m_zoomSelectBox->SetSelection( 0 );

    for( unsigned i = 0;  i < GetScreen()->m_ZoomList.size();  ++i )
    {
        msg = _( "Zoom " );

        double level =  m_zoomLevelCoeff / (double)GetScreen()->m_ZoomList[i];
        wxString value = wxString::Format( wxT( "%.2f" ), level );
        msg += value;

        m_zoomSelectBox->Append( msg );

        if( GetScreen()->GetZoom() == GetScreen()->m_ZoomList[i] )
            m_zoomSelectBox->SetSelection( i + 1 );
    }
}


void PCB_BASE_FRAME::SetFastGrid1()
{
    if( m_FastGrid1 >= (int)GetScreen()->GetGridCount() )
        return;

    int cmdId = GetScreen()->GetGrids()[m_FastGrid1].m_CmdId - ID_POPUP_GRID_LEVEL_1000;
    GetToolManager()->RunAction( "common.Control.gridPreset", true, cmdId );
}


void PCB_BASE_FRAME::SetFastGrid2()
{
    if( m_FastGrid2 >= (int)GetScreen()->GetGridCount() )
        return;

    int cmdId = GetScreen()->GetGrids()[m_FastGrid2].m_CmdId - ID_POPUP_GRID_LEVEL_1000;
    GetToolManager()->RunAction( "common.Control.gridPreset", true, cmdId );
}


bool PCB_BASE_FRAME::IsGridVisible() const
{
    return m_drawGrid;
}


void PCB_BASE_FRAME::SetGridVisibility( bool aVisible )
{
    m_drawGrid = aVisible;

    // Update the display with the new grid
    if( GetCanvas() )
    {
        // Check to ensure these exist, since this function could be called before
        // the GAL and View have been created
        if( GetCanvas()->GetGAL() )
            GetCanvas()->GetGAL()->SetGridVisibility( aVisible );

        if( GetCanvas()->GetView() )
            GetCanvas()->GetView()->MarkTargetDirty( KIGFX::TARGET_NONCACHED );

        GetCanvas()->Refresh();
    }
}


PCB_DRAW_PANEL_GAL* PCB_BASE_FRAME::GetCanvas() const
{
    return static_cast<PCB_DRAW_PANEL_GAL*>( EDA_DRAW_FRAME::GetCanvas() );
}


void PCB_BASE_FRAME::ActivateGalCanvas()
{
    EDA_DRAW_FRAME::ActivateGalCanvas();

    EDA_DRAW_PANEL_GAL* canvas = GetCanvas();

    if( m_toolManager )
    {
        m_toolManager->SetEnvironment( m_Pcb, GetCanvas()->GetView(),
                                       GetCanvas()->GetViewControls(), this );
    }

    SetBoard( m_Pcb );

    if( m_toolManager )
        m_toolManager->ResetTools( TOOL_BASE::GAL_SWITCH );

    // Transfer latest current display options from legacy to GAL canvas:
    auto painter = static_cast<KIGFX::PCB_PAINTER*>( canvas->GetView()->GetPainter() );
    auto settings = painter->GetSettings();
    auto displ_opts = GetDisplayOptions();
    settings->LoadDisplayOptions( displ_opts, ShowPageLimits() );
    settings->LoadColors( ColorSettings() );

    canvas->GetView()->RecacheAllItems();
    canvas->SetEventDispatcher( m_toolDispatcher );
    canvas->StartDrawing();

    // Initialize the grid settings
    GetCanvas()->GetGAL()->SetGridSize( VECTOR2D( GetScreen()->GetGridSize() ) );
    GetCanvas()->GetGAL()->SetGridVisibility( IsGridVisible() );
}

