kicad/pcbnew/footprint_edit_frame.cpp

/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2015 Jean-Pierre Charras, jp.charras at wanadoo.fr
 * Copyright (C) 2015 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
 * Copyright (C) 2015-2016 Wayne Stambaugh <stambaughw@gmail.com>
 * Copyright (C) 1992-2022 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 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, see <http://www.gnu.org/licenses/>.
 */

#include "tools/convert_tool.h"
#include "tools/drawing_tool.h"
#include "tools/edit_tool.h"
#include "tools/footprint_editor_control.h"
#include "tools/pad_tool.h"
#include "tools/pcb_actions.h"
#include "tools/pcb_control.h"
#include "tools/pcb_picker_tool.h"
#include "tools/placement_tool.h"
#include "tools/pcb_point_editor.h"
#include "tools/pcb_selection_tool.h"
#include <python/scripting/pcb_scripting_tool.h>
#include <3d_viewer/eda_3d_viewer_frame.h>
#include <bitmaps.h>
#include <board.h>
#include <footprint.h>
#include <confirm.h>
#include <footprint_edit_frame.h>
#include <footprint_editor_settings.h>
#include <footprint_info_impl.h>
#include <footprint_tree_pane.h>
#include <fp_lib_table.h>
#include <plugins/kicad/pcb_plugin.h>
#include <kiface_base.h>
#include <kiplatform/app.h>
#include <kiway.h>
#include <macros.h>
#include <pcb_draw_panel_gal.h>
#include <pcb_edit_frame.h>
#include <pcbnew.h>
#include <pcbnew_id.h>
#include <pgm_base.h>
#include <project.h>
#include <settings/settings_manager.h>
#include <tool/action_toolbar.h>
#include <tool/common_control.h>
#include <tool/common_tools.h>
#include <tool/selection.h>
#include <tool/tool_dispatcher.h>
#include <tool/tool_manager.h>
#include <tool/zoom_tool.h>
#include <tools/pcb_editor_conditions.h>
#include <tools/pcb_viewer_tools.h>
#include <tools/group_tool.h>
#include <tools/position_relative_tool.h>
#include <widgets/appearance_controls.h>
#include <widgets/lib_tree.h>
#include <widgets/panel_selection_filter.h>
#include <widgets/wx_progress_reporters.h>
#include <wildcards_and_files_ext.h>
#include <wx/filedlg.h>
#include <widgets/wx_aui_utils.h>

BEGIN_EVENT_TABLE( FOOTPRINT_EDIT_FRAME, PCB_BASE_FRAME )
    EVT_MENU( wxID_CLOSE, FOOTPRINT_EDIT_FRAME::CloseFootprintEditor )
    EVT_MENU( wxID_EXIT, FOOTPRINT_EDIT_FRAME::OnExitKiCad )

    EVT_SIZE( FOOTPRINT_EDIT_FRAME::OnSize )

    EVT_CHOICE( ID_ON_ZOOM_SELECT, FOOTPRINT_EDIT_FRAME::OnSelectZoom )
    EVT_CHOICE( ID_ON_GRID_SELECT, FOOTPRINT_EDIT_FRAME::OnSelectGrid )

    EVT_TOOL( ID_FPEDIT_SAVE_PNG, FOOTPRINT_EDIT_FRAME::OnSaveFootprintAsPng )

    EVT_TOOL( ID_LOAD_FOOTPRINT_FROM_BOARD, FOOTPRINT_EDIT_FRAME::OnLoadFootprintFromBoard )
    EVT_TOOL( ID_ADD_FOOTPRINT_TO_BOARD, FOOTPRINT_EDIT_FRAME::OnSaveFootprintToBoard )

    // Horizontal toolbar
    EVT_MENU( ID_GRID_SETTINGS, FOOTPRINT_EDIT_FRAME::OnGridSettings )
    EVT_COMBOBOX( ID_TOOLBARH_PCB_SELECT_LAYER, FOOTPRINT_EDIT_FRAME::SelectLayer )

    // UI update events.
    EVT_UPDATE_UI( ID_LOAD_FOOTPRINT_FROM_BOARD,
                   FOOTPRINT_EDIT_FRAME::OnUpdateLoadFootprintFromBoard )
    EVT_UPDATE_UI( ID_ADD_FOOTPRINT_TO_BOARD,
                   FOOTPRINT_EDIT_FRAME::OnUpdateSaveFootprintToBoard )
    EVT_UPDATE_UI( ID_TOOLBARH_PCB_SELECT_LAYER, FOOTPRINT_EDIT_FRAME::OnUpdateLayerSelectBox )
END_EVENT_TABLE()


FOOTPRINT_EDIT_FRAME::FOOTPRINT_EDIT_FRAME( KIWAY* aKiway, wxWindow* aParent ) :
    PCB_BASE_EDIT_FRAME( aKiway, aParent, FRAME_FOOTPRINT_EDITOR, wxEmptyString,
                         wxDefaultPosition, wxDefaultSize,
                         KICAD_DEFAULT_DRAWFRAME_STYLE, GetFootprintEditorFrameName() ),
    m_show_layer_manager_tools( true )
{
    m_showBorderAndTitleBlock = false;   // true to show the frame references
    m_aboutTitle = _( "KiCad Footprint Editor" );
    m_selLayerBox = nullptr;
    m_editorSettings = nullptr;

    // Give an icon
    wxIcon icon;
    wxIconBundle icon_bundle;

    icon.CopyFromBitmap( KiBitmap( BITMAPS::icon_modedit ) );
    icon_bundle.AddIcon( icon );
    icon.CopyFromBitmap( KiBitmap( BITMAPS::icon_modedit_32 ) );
    icon_bundle.AddIcon( icon );
    icon.CopyFromBitmap( KiBitmap( BITMAPS::icon_modedit_16 ) );
    icon_bundle.AddIcon( icon );

    SetIcons( icon_bundle );

    // Create GAL canvas
    m_canvasType = loadCanvasTypeSetting();

    PCB_DRAW_PANEL_GAL* drawPanel = new PCB_DRAW_PANEL_GAL( this, -1, wxPoint( 0, 0 ), m_frameSize,
                                                            GetGalDisplayOptions(), m_canvasType );
    SetCanvas( drawPanel );
    SetBoard( new BOARD() );

    // This board will only be used to hold a footprint for editing
    GetBoard()->SetBoardUse( BOARD_USE::FPHOLDER );

    // In Footprint Editor, the default net clearance is not known (it depends on the actual
    // board).  So we do not show the default clearance, by setting it to 0.  The footprint or
    // pad specific clearance will be shown.
    GetBoard()->GetDesignSettings().GetDefault()->SetClearance( 0 );

    // Don't show the default board solder mask expansion in the footprint editor.  Only the
    // footprint or pad mask expansions settings should be shown.
    GetBoard()->GetDesignSettings().m_SolderMaskExpansion = 0;

    // restore the last footprint from the project, if any
    restoreLastFootprint();

    // Ensure all layers and items are visible:
    // In footprint editor, some layers have no meaning or cannot be used, but we show all of
    // them, at least to be able to edit a bad layer
    GetBoard()->SetVisibleAlls();

    // However the "no net" mark on pads is useless, because there are no nets in footprint
    // editor: make it non visible.
    GetBoard()->SetElementVisibility( LAYER_NO_CONNECTS, false );

    GetGalDisplayOptions().m_axesEnabled = true;

    // In Footprint Editor, set the default paper size to A4 for plot/print
    SetPageSettings( PAGE_INFO( PAGE_INFO::A4 ) );
    SetScreen( new PCB_SCREEN( GetPageSettings().GetSizeIU() ) );

    // Create the manager and dispatcher & route draw panel events to the dispatcher
    setupTools();
    setupUIConditions();

    initLibraryTree();
    m_treePane = new FOOTPRINT_TREE_PANE( this );

    ReCreateMenuBar();
    ReCreateHToolbar();
    ReCreateVToolbar();
    ReCreateOptToolbar();

    m_selectionFilterPanel = new PANEL_SELECTION_FILTER( this );
    m_appearancePanel = new APPEARANCE_CONTROLS( this, GetCanvas(), true );

    // LoadSettings() *after* creating m_LayersManager, because LoadSettings() initialize
    // parameters in m_LayersManager
    // NOTE: KifaceSettings() will return PCBNEW_SETTINGS if we started from pcbnew
    LoadSettings( GetSettings() );

    // Must be set after calling LoadSettings() to be sure these parameters are not dependent
    // on what is read in stored settings.  Enable one internal layer, because footprints
    // support keepout areas that can be on internal layers only (therefore on the first internal
    // layer).  This is needed to handle these keepout in internal layers only.
    GetBoard()->SetCopperLayerCount( 3 );
    GetBoard()->SetEnabledLayers( GetBoard()->GetEnabledLayers().set( In1_Cu ) );
    GetBoard()->SetVisibleLayers( GetBoard()->GetEnabledLayers() );
    GetBoard()->SetLayerName( In1_Cu, _( "Inner layers" ) );

    SetActiveLayer( F_SilkS );

    m_auimgr.SetManagedWindow( this );

    CreateInfoBar();

    unsigned int auiFlags = wxAUI_MGR_DEFAULT;
#if !defined( _WIN32 )
    // Windows cannot redraw the UI fast enough during a live resize and may lead to all kinds
    // of graphical glitches
    auiFlags |= wxAUI_MGR_LIVE_RESIZE;
#endif
    m_auimgr.SetFlags( auiFlags );

    // Rows; layers 4 - 6
    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 ) );

    // Columns; layers 1 - 3
    m_auimgr.AddPane( m_optionsToolBar, EDA_PANE().VToolbar().Name( "OptToolbar" )
                      .Left().Layer( 3 ) );
    m_auimgr.AddPane( m_treePane, EDA_PANE().Palette().Name( "Footprints" )
                      .Left().Layer(2)
                      .Caption( _( "Libraries" ) )
                      .MinSize( 250, 400 ).Resizable() );

    m_auimgr.AddPane( m_drawToolBar, EDA_PANE().VToolbar().Name( "ToolsToolbar" )
                      .Right().Layer(2) );

    m_auimgr.AddPane( m_appearancePanel, EDA_PANE().Name( "LayersManager" )
                      .Right().Layer( 3 )
                      .Caption( _( "Appearance" ) ).PaneBorder( false )
                      .MinSize( 180, -1 ).BestSize( 180, -1 ) );
    m_auimgr.AddPane( m_selectionFilterPanel, EDA_PANE().Palette().Name( "SelectionFilter" )
                      .Right().Layer( 3 ).Position( 2 )
                      .Caption( _( "Selection Filter" ) ).PaneBorder( false )
                      .MinSize( 160, -1 ).BestSize( m_selectionFilterPanel->GetBestSize() ) );

    // Center
    m_auimgr.AddPane( GetCanvas(), EDA_PANE().Canvas().Name( "DrawFrame" )
                      .Center() );

    m_auimgr.GetPane( "LayersManager" ).Show( m_show_layer_manager_tools );
    m_auimgr.GetPane( "SelectionFilter" ).Show( m_show_layer_manager_tools );

    // The selection filter doesn't need to grow in the vertical direction when docked
    m_auimgr.GetPane( "SelectionFilter" ).dock_proportion = 0;

    ActivateGalCanvas();

    FinishAUIInitialization();

    if( m_editorSettings->m_LibWidth > 0 )
    {
        wxAuiPaneInfo& treePane = m_auimgr.GetPane( "Footprints" );

        // wxAUI hack: force width by setting MinSize() and then Fixed()
        // thanks to ZenJu http://trac.wxwidgets.org/ticket/13180
        treePane.MinSize( m_editorSettings->m_LibWidth, -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( 250, -1 );
    }

    // Apply saved visibility stuff at the end
    FOOTPRINT_EDITOR_SETTINGS* cfg = GetSettings();
    m_appearancePanel->SetUserLayerPresets( cfg->m_LayerPresets );
    m_appearancePanel->ApplyLayerPreset( cfg->m_ActiveLayerPreset );

    if( cfg->m_AuiPanels.right_panel_width > 0 )
    {
        wxAuiPaneInfo& layersManager = m_auimgr.GetPane( "LayersManager" );
        SetAuiPaneSize( m_auimgr, layersManager, cfg->m_AuiPanels.right_panel_width, -1 );
    }

    m_appearancePanel->SetTabIndex( cfg->m_AuiPanels.appearance_panel_tab );

    GetToolManager()->RunAction( ACTIONS::zoomFitScreen, false );
    UpdateTitle();
    setupUnits( GetSettings() );

    resolveCanvasType();

    // Default shutdown reason until a file is loaded
    KIPLATFORM::APP::SetShutdownBlockReason( this, _( "Footprint changes are unsaved" ) );

    // Catch unhandled accelerator command characters that were no handled by the library tree
    // panel.
    Bind( wxEVT_CHAR, &TOOL_DISPATCHER::DispatchWxEvent, m_toolDispatcher );
    Bind( wxEVT_CHAR_HOOK, &TOOL_DISPATCHER::DispatchWxEvent, m_toolDispatcher );

    // Ensure the window is on top
    Raise();
    Show( true );

    // Register a call to update the toolbar sizes. It can't be done immediately because
    // it seems to require some sizes calculated that aren't yet (at least on GTK).
    CallAfter( [&]()
               {
                   // Ensure the controls on the toolbars all are correctly sized
                    UpdateToolbarControlSizes();
               } );
}


FOOTPRINT_EDIT_FRAME::~FOOTPRINT_EDIT_FRAME()
{
    // Shutdown all running tools
    if( m_toolManager )
        m_toolManager->ShutdownAllTools();

    // save the footprint in the PROJECT
    retainLastFootprint();

    delete m_selectionFilterPanel;
    delete m_appearancePanel;
    delete m_treePane;
}


bool FOOTPRINT_EDIT_FRAME::IsContentModified() const
{
    return GetScreen() && GetScreen()->IsContentModified() && GetBoard() && GetBoard()->GetFirstFootprint();
}


SELECTION& FOOTPRINT_EDIT_FRAME::GetCurrentSelection()
{
    return m_toolManager->GetTool<PCB_SELECTION_TOOL>()->GetSelection();
}


void FOOTPRINT_EDIT_FRAME::SwitchCanvas( EDA_DRAW_PANEL_GAL::GAL_TYPE aCanvasType )
{
    // switches currently used canvas (Cairo / OpenGL).
    PCB_BASE_FRAME::SwitchCanvas( aCanvasType );

    GetCanvas()->GetGAL()->SetAxesEnabled( true );

    // The base class method *does not reinit* the layers manager. We must update the layer
    // widget to match board visibility states, both layers and render columns, and and some
    // settings dependent on the canvas.
    UpdateUserInterface();
}


void FOOTPRINT_EDIT_FRAME::HardRedraw()
{
    SyncLibraryTree( true );
    GetCanvas()->ForceRefresh();
}


void FOOTPRINT_EDIT_FRAME::ToggleSearchTree()
{
    wxAuiPaneInfo& treePane = m_auimgr.GetPane( m_treePane );
    treePane.Show( !IsSearchTreeShown() );
    m_auimgr.Update();
}


void FOOTPRINT_EDIT_FRAME::ToggleLayersManager()
{
    FOOTPRINT_EDITOR_SETTINGS* settings = GetSettings();
    wxAuiPaneInfo&             layersManager = m_auimgr.GetPane( "LayersManager" );
    wxAuiPaneInfo&             selectionFilter = m_auimgr.GetPane( "SelectionFilter" );

    // show auxiliary Vertical layers and visibility manager toolbar
    m_show_layer_manager_tools = !m_show_layer_manager_tools;
    layersManager.Show( m_show_layer_manager_tools );
    selectionFilter.Show( m_show_layer_manager_tools );

    if( m_show_layer_manager_tools )
    {
        SetAuiPaneSize( m_auimgr, layersManager, settings->m_AuiPanels.right_panel_width, -1 );
    }
    else
    {
        settings->m_AuiPanels.right_panel_width = m_appearancePanel->GetSize().x;
        m_auimgr.Update();
    }
}


bool FOOTPRINT_EDIT_FRAME::IsSearchTreeShown() const
{
    return const_cast<wxAuiManager&>( m_auimgr ).GetPane( m_treePane ).IsShown();
}


BOARD_ITEM_CONTAINER* FOOTPRINT_EDIT_FRAME::GetModel() const
{
    return GetBoard()->GetFirstFootprint();
}


LIB_ID FOOTPRINT_EDIT_FRAME::GetTreeFPID() const
{
    return m_treePane->GetLibTree()->GetSelectedLibId();
}


LIB_TREE_NODE* FOOTPRINT_EDIT_FRAME::GetCurrentTreeNode() const
{
    return m_treePane->GetLibTree()->GetCurrentTreeNode();
}


LIB_ID FOOTPRINT_EDIT_FRAME::GetTargetFPID() const
{
    LIB_ID id;

    if( IsSearchTreeShown() )
        id = GetTreeFPID();

    if( id.GetLibNickname().empty() )
        id = GetLoadedFPID();

    return id;
}


LIB_ID FOOTPRINT_EDIT_FRAME::GetLoadedFPID() const
{
    FOOTPRINT* footprint = GetBoard()->GetFirstFootprint();

    if( footprint )
        return LIB_ID( footprint->GetFPID().GetLibNickname(), m_footprintNameWhenLoaded );
    else
        return LIB_ID();
}


void FOOTPRINT_EDIT_FRAME::ClearModify()
{
    if( GetBoard()->GetFirstFootprint() )
        m_footprintNameWhenLoaded = GetBoard()->GetFirstFootprint()->GetFPID().GetLibItemName();

    GetScreen()->SetContentModified( false );
}


bool FOOTPRINT_EDIT_FRAME::IsCurrentFPFromBoard() const
{
    FOOTPRINT* footprint = GetBoard()->GetFirstFootprint();

    return ( footprint && footprint->GetLink() != niluuid );
}


void FOOTPRINT_EDIT_FRAME::retainLastFootprint()
{
    LIB_ID id = GetLoadedFPID();

    if( id.IsValid() )
    {
        Prj().SetRString( PROJECT::PCB_FOOTPRINT_EDITOR_LIB_NICKNAME, id.GetLibNickname() );
        Prj().SetRString( PROJECT::PCB_FOOTPRINT_EDITOR_FP_NAME, id.GetLibItemName() );
    }
}


void FOOTPRINT_EDIT_FRAME::restoreLastFootprint()
{
    const wxString& footprintName = Prj().GetRString( PROJECT::PCB_FOOTPRINT_EDITOR_FP_NAME );
    const wxString& libNickname =  Prj().GetRString( PROJECT::PCB_FOOTPRINT_EDITOR_LIB_NICKNAME );

    if( libNickname.Length() && footprintName.Length() )
    {
        LIB_ID id;
        id.SetLibNickname( libNickname );
        id.SetLibItemName( footprintName );

        FOOTPRINT* footprint = loadFootprint( id );

        if( footprint )
            AddFootprintToBoard( footprint );
    }
}


void FOOTPRINT_EDIT_FRAME::AddFootprintToBoard( FOOTPRINT* aFootprint )
{
    m_revertModule.reset( (FOOTPRINT*) aFootprint->Clone() );

    m_footprintNameWhenLoaded = aFootprint->GetFPID().GetLibItemName();

    PCB_BASE_EDIT_FRAME::AddFootprintToBoard( aFootprint );
    // Ensure item UUIDs are valide
    // ("old" footprints can have null uuids that create issues in fp editor)
    aFootprint->FixUuids();

    if( IsCurrentFPFromBoard() )
    {
        wxString msg;
        msg.Printf( _( "Editing %s from board.  Saving will update the board only." ),
                    aFootprint->GetReference() );

        GetInfoBar()->RemoveAllButtons();
        GetInfoBar()->AddCloseButton();
        GetInfoBar()->ShowMessage( msg, wxICON_INFORMATION );
    }

    UpdateMsgPanel();
}


const wxChar* FOOTPRINT_EDIT_FRAME::GetFootprintEditorFrameName()
{
    return FOOTPRINT_EDIT_FRAME_NAME;
}


BOARD_DESIGN_SETTINGS& FOOTPRINT_EDIT_FRAME::GetDesignSettings() const
{
    return GetBoard()->GetDesignSettings();
}


const PCB_PLOT_PARAMS& FOOTPRINT_EDIT_FRAME::GetPlotSettings() const
{
    wxFAIL_MSG( wxT( "Plotting not supported in Footprint Editor" ) );

    return PCB_BASE_FRAME::GetPlotSettings();
}


void FOOTPRINT_EDIT_FRAME::SetPlotSettings( const PCB_PLOT_PARAMS& aSettings )
{
    wxFAIL_MSG( wxT( "Plotting not supported in Footprint Editor" ) );
}


FOOTPRINT_EDITOR_SETTINGS* FOOTPRINT_EDIT_FRAME::GetSettings()
{
    if( !m_editorSettings )
        m_editorSettings = Pgm().GetSettingsManager().GetAppSettings<FOOTPRINT_EDITOR_SETTINGS>();

    return m_editorSettings;
}


APP_SETTINGS_BASE* FOOTPRINT_EDIT_FRAME::config() const
{
    return m_editorSettings ? m_editorSettings
                            : Pgm().GetSettingsManager().GetAppSettings<FOOTPRINT_EDITOR_SETTINGS>();
}


void FOOTPRINT_EDIT_FRAME::LoadSettings( APP_SETTINGS_BASE* aCfg )
{
    // aCfg will be the PCBNEW_SETTINGS
    FOOTPRINT_EDITOR_SETTINGS* cfg = GetSettings();

    PCB_BASE_FRAME::LoadSettings( cfg );

    GetDesignSettings() = cfg->m_DesignSettings;

    m_displayOptions = cfg->m_Display;
    m_show_layer_manager_tools = cfg->m_AuiPanels.show_layer_manager;

    GetToolManager()->GetTool<PCB_SELECTION_TOOL>()->GetFilter() = cfg->m_SelectionFilter;
    m_selectionFilterPanel->SetCheckboxesFromFilter( cfg->m_SelectionFilter );
}


void FOOTPRINT_EDIT_FRAME::SaveSettings( APP_SETTINGS_BASE* aCfg )
{
    GetGalDisplayOptions().m_axesEnabled = true;

    // aCfg will be the PCBNEW_SETTINGS
    FOOTPRINT_EDITOR_SETTINGS* cfg = GetSettings();

    PCB_BASE_FRAME::SaveSettings( cfg );

    cfg->m_DesignSettings    = GetDesignSettings();
    cfg->m_Display           = m_displayOptions;
    cfg->m_LibWidth          = m_treePane->GetSize().x;
    cfg->m_SelectionFilter   = GetToolManager()->GetTool<PCB_SELECTION_TOOL>()->GetFilter();
    cfg->m_LayerPresets      = m_appearancePanel->GetUserLayerPresets();
    cfg->m_ActiveLayerPreset = m_appearancePanel->GetActiveLayerPreset();

    cfg->m_AuiPanels.show_layer_manager   = m_show_layer_manager_tools;
    cfg->m_AuiPanels.right_panel_width    = m_appearancePanel->GetSize().x;
    cfg->m_AuiPanels.appearance_panel_tab = m_appearancePanel->GetTabIndex();
}



EDA_ANGLE FOOTPRINT_EDIT_FRAME::GetRotationAngle() const
{
    FOOTPRINT_EDITOR_SETTINGS* cfg = const_cast<FOOTPRINT_EDIT_FRAME*>( this )->GetSettings();

    return cfg ? cfg->m_RotationAngle : ANGLE_90;
}



COLOR_SETTINGS* FOOTPRINT_EDIT_FRAME::GetColorSettings( bool aForceRefresh ) const
{
    wxString currentTheme = GetFootprintEditorSettings()->m_ColorTheme;
    return Pgm().GetSettingsManager().GetColorSettings( currentTheme );
}


MAGNETIC_SETTINGS* FOOTPRINT_EDIT_FRAME::GetMagneticItemsSettings()
{
    // Get the actual frame settings for magnetic items
    FOOTPRINT_EDITOR_SETTINGS* cfg = GetSettings();
    wxCHECK( cfg, nullptr );
    return &cfg->m_MagneticItems;
}


const BOX2I FOOTPRINT_EDIT_FRAME::GetDocumentExtents( bool aIncludeAllVisible ) const
{
    FOOTPRINT* footprint = GetBoard()->GetFirstFootprint();

    if( footprint )
    {
        bool hasGraphicalItem = footprint->Pads().size() || footprint->Zones().size();

        if( !hasGraphicalItem )
        {
            for( const BOARD_ITEM* item : footprint->GraphicalItems() )
            {
                if( item->Type() == PCB_FP_TEXT_T )
                    continue;

                hasGraphicalItem = true;
                break;
            }
        }

        if( hasGraphicalItem )
        {
            return footprint->GetBoundingBox( false, false );
        }
        else
        {
            BOX2I newFootprintBB( { 0, 0 }, { 0, 0 } );
            newFootprintBB.Inflate( Millimeter2iu( 12 ) );
            return newFootprintBB;
        }
    }

    return GetBoardBoundingBox( false );
}


bool FOOTPRINT_EDIT_FRAME::CanCloseFPFromBoard( bool doClose )
{
    if( IsContentModified() )
    {
        wxString footprintName = GetBoard()->GetFirstFootprint()->GetReference();
        wxString msg = _( "Save changes to '%s' before closing?" );

        if( !HandleUnsavedChanges( this, wxString::Format( msg, footprintName ),
                                   [&]() -> bool
                                   {
                                       return SaveFootprint( GetBoard()->GetFirstFootprint() );
                                   } ) )
        {
            return false;
        }
    }

    if( doClose )
    {
        GetInfoBar()->ShowMessageFor( wxEmptyString, 1 );
        Clear_Pcb( false );
        UpdateTitle();
    }

    return true;
}


bool FOOTPRINT_EDIT_FRAME::canCloseWindow( wxCloseEvent& aEvent )
{
    if( IsContentModified() )
    {
        // Shutdown blocks must be determined and vetoed as early as possible
        if( KIPLATFORM::APP::SupportsShutdownBlockReason() &&
            aEvent.GetId() == wxEVT_QUERY_END_SESSION )
        {
            aEvent.Veto();
            return false;
        }

        wxString footprintName = GetBoard()->GetFirstFootprint()->GetFPID().GetLibItemName();

        if( IsCurrentFPFromBoard() )
            footprintName = GetBoard()->GetFirstFootprint()->GetReference();

        wxString msg = _( "Save changes to '%s' before closing?" );

        if( !HandleUnsavedChanges( this, wxString::Format( msg, footprintName ),
                                   [&]() -> bool
                                   {
                                       return SaveFootprint( GetBoard()->GetFirstFootprint() );
                                   } ) )
        {
            aEvent.Veto();
            return false;
        }
    }

    return PCB_BASE_EDIT_FRAME::canCloseWindow( aEvent );
}


void FOOTPRINT_EDIT_FRAME::doCloseWindow()
{
    // No more vetos
    GetCanvas()->SetEventDispatcher( nullptr );
    GetCanvas()->StopDrawing();

    // Do not show the layer manager during closing to avoid flicker
    // on some platforms (Windows) that generate useless redraw of items in
    // the Layer Manager
    m_auimgr.GetPane( wxT( "LayersManager" ) ).Show( false );
    m_auimgr.GetPane( wxT( "SelectionFilter" ) ).Show( false );

    Clear_Pcb( false );

    SETTINGS_MANAGER* mgr = GetSettingsManager();

    if( mgr->IsProjectOpen() && wxFileName::IsDirWritable( Prj().GetProjectPath() ) )
    {
        GFootprintList.WriteCacheToFile( Prj().GetProjectPath() + wxT( "fp-info-cache" ) );
    }

    mgr->FlushAndRelease( GetSettings() );
}


void FOOTPRINT_EDIT_FRAME::OnExitKiCad( wxCommandEvent& event )
{
    Kiway().OnKiCadExit();
}


void FOOTPRINT_EDIT_FRAME::CloseFootprintEditor( wxCommandEvent& Event )
{
    Close();
}


void FOOTPRINT_EDIT_FRAME::OnUpdateLoadFootprintFromBoard( wxUpdateUIEvent& aEvent )
{
    PCB_EDIT_FRAME* frame = (PCB_EDIT_FRAME*) Kiway().Player( FRAME_PCB_EDITOR, false );

    aEvent.Enable( frame && frame->GetBoard()->GetFirstFootprint() != nullptr );
}


void FOOTPRINT_EDIT_FRAME::OnUpdateSaveFootprintToBoard( wxUpdateUIEvent& aEvent )
{
    PCB_EDIT_FRAME* frame = (PCB_EDIT_FRAME*) Kiway().Player( FRAME_PCB_EDITOR, false );

    FOOTPRINT* editorFootprint = GetBoard()->GetFirstFootprint();
    bool       canInsert = frame && editorFootprint && editorFootprint->GetLink() == niluuid;

    // If the source was deleted, the footprint can inserted but not updated in the board.
    if( frame && editorFootprint && editorFootprint->GetLink() != niluuid )
    {
        BOARD*  mainpcb = frame->GetBoard();
        canInsert = true;

        // search if the source footprint was not deleted:
        for( FOOTPRINT* candidate : mainpcb->Footprints() )
        {
            if( editorFootprint->GetLink() == candidate->m_Uuid )
            {
                canInsert = false;
                break;
            }
        }
    }

    aEvent.Enable( canInsert );
}


void FOOTPRINT_EDIT_FRAME::ShowChangedLanguage()
{
    // call my base class
    PCB_BASE_EDIT_FRAME::ShowChangedLanguage();

    // We have 2 panes to update.
    // For some obscure reason, the AUI manager hides the first modified pane.
    // So force show panes
    wxAuiPaneInfo& tree_pane_info = m_auimgr.GetPane( m_treePane );
    bool tree_shown = tree_pane_info.IsShown();
    tree_pane_info.Caption( _( "Libraries" ) );

    wxAuiPaneInfo& lm_pane_info = m_auimgr.GetPane( m_appearancePanel );
    bool lm_shown = lm_pane_info.IsShown();
    lm_pane_info.Caption( _( "Appearance" ) );

    // update the layer manager
    m_appearancePanel->OnLanguageChanged();
    m_selectionFilterPanel->OnLanguageChanged();
    UpdateUserInterface();

    // Now restore the visibility:
    lm_pane_info.Show( lm_shown );
    tree_pane_info.Show( tree_shown );
    m_auimgr.Update();
}


void FOOTPRINT_EDIT_FRAME::OnModify()
{
    PCB_BASE_FRAME::OnModify();
    Update3DView( true, true );
    m_treePane->GetLibTree()->RefreshLibTree();

    if( !GetTitle().StartsWith( wxT( "*" ) ) )
        UpdateTitle();
}


void FOOTPRINT_EDIT_FRAME::UpdateTitle()
{
    wxString   title;
    LIB_ID     fpid = GetLoadedFPID();
    FOOTPRINT* footprint = GetBoard()->GetFirstFootprint();
    bool       writable = true;

    if( IsCurrentFPFromBoard() )
    {
        if( IsContentModified() )
            title = wxT( "*" );

        title += footprint->GetReference();
        title += wxS( " " ) + wxString::Format( _( "[from %s]" ), Prj().GetProjectName()
                                                                              + wxT( "." )
                                                                              + PcbFileExtension );
    }
    else if( fpid.IsValid() )
    {
        try
        {
            writable = Prj().PcbFootprintLibs()->IsFootprintLibWritable( fpid.GetLibNickname() );
        }
        catch( const IO_ERROR& )
        {
            // best efforts...
        }

        // Note: don't used GetLoadedFPID(); footprint name may have been edited
        if( IsContentModified() )
            title = wxT( "*" );

        title += FROM_UTF8( footprint->GetFPID().Format().c_str() );

        if( !writable )
            title += wxS( " " ) + _( "[Read Only]" );
    }
    else if( !fpid.GetLibItemName().empty() )
    {
        // Note: don't used GetLoadedFPID(); footprint name may have been edited
        if( IsContentModified() )
            title = wxT( "*" );

        title += FROM_UTF8( footprint->GetFPID().GetLibItemName().c_str() );
        title += wxS( " " ) + _( "[Unsaved]" );
    }
    else
    {
        title = _( "[no footprint loaded]" );
    }

    title += wxT( " \u2014 " ) + _( "Footprint Editor" );

    SetTitle( title );
}


void FOOTPRINT_EDIT_FRAME::UpdateUserInterface()
{
    m_appearancePanel->OnBoardChanged();
}


void FOOTPRINT_EDIT_FRAME::UpdateView()
{
    GetCanvas()->UpdateColors();
    GetCanvas()->DisplayBoard( GetBoard() );
    m_toolManager->ResetTools( TOOL_BASE::MODEL_RELOAD );
    UpdateTitle();
}


void FOOTPRINT_EDIT_FRAME::initLibraryTree()
{
    FP_LIB_TABLE*   fpTable = Prj().PcbFootprintLibs();

    WX_PROGRESS_REPORTER progressReporter( this, _( "Loading Footprint Libraries" ), 2 );

    if( GFootprintList.GetCount() == 0 )
        GFootprintList.ReadCacheFromFile( Prj().GetProjectPath() + wxT( "fp-info-cache" ) );

    GFootprintList.ReadFootprintFiles( fpTable, nullptr, &progressReporter );
    progressReporter.Show( false );

    if( GFootprintList.GetErrorCount() )
        GFootprintList.DisplayErrors( this );

    m_adapter = FP_TREE_SYNCHRONIZING_ADAPTER::Create( this, fpTable );
    auto adapter = static_cast<FP_TREE_SYNCHRONIZING_ADAPTER*>( m_adapter.get() );

    adapter->AddLibraries();
}


void FOOTPRINT_EDIT_FRAME::SyncLibraryTree( bool aProgress )
{
    FP_LIB_TABLE* fpTable = Prj().PcbFootprintLibs();
    auto          adapter = static_cast<FP_TREE_SYNCHRONIZING_ADAPTER*>( m_adapter.get() );
    LIB_ID        target = GetTargetFPID();
    bool          targetSelected = ( target == m_treePane->GetLibTree()->GetSelectedLibId() );

    // Sync FOOTPRINT_INFO list to the libraries on disk
    if( aProgress )
    {
        WX_PROGRESS_REPORTER progressReporter( this, _( "Updating Footprint Libraries" ), 2 );
        GFootprintList.ReadFootprintFiles( fpTable, nullptr, &progressReporter );
        progressReporter.Show( false );
    }
    else
    {
        GFootprintList.ReadFootprintFiles( fpTable, nullptr, nullptr );
    }

    // Sync the LIB_TREE to the FOOTPRINT_INFO list
    adapter->Sync();

    m_treePane->GetLibTree()->Unselect();
    m_treePane->GetLibTree()->Regenerate( true );

    if( target.IsValid() )
    {
        if( adapter->FindItem( target ) )
        {
            if( targetSelected )
                m_treePane->GetLibTree()->SelectLibId( target );
            else
                m_treePane->GetLibTree()->CenterLibId( target );
        }
        else
        {
            // Try to focus on parent
            target.SetLibItemName( wxEmptyString );
            m_treePane->GetLibTree()->CenterLibId( target );
        }
    }
}


void FOOTPRINT_EDIT_FRAME::RegenerateLibraryTree()
{
    LIB_ID target = GetTargetFPID();

    m_treePane->GetLibTree()->Regenerate( true );

    if( target.IsValid() )
        m_treePane->GetLibTree()->CenterLibId( target );
}


void FOOTPRINT_EDIT_FRAME::RefreshLibraryTree()
{
    m_treePane->GetLibTree()->RefreshLibTree();
}


void FOOTPRINT_EDIT_FRAME::FocusOnLibID( const LIB_ID& aLibID )
{
    m_treePane->GetLibTree()->SelectLibId( aLibID );
}


void FOOTPRINT_EDIT_FRAME::OnDisplayOptionsChanged()
{
    m_appearancePanel->UpdateDisplayOptions();
}


void FOOTPRINT_EDIT_FRAME::setupTools()
{
    // Create the manager and dispatcher & route draw panel events to the dispatcher
    m_toolManager = new TOOL_MANAGER;
    m_toolManager->SetEnvironment( GetBoard(), GetCanvas()->GetView(),
                                   GetCanvas()->GetViewControls(), config(), this );
    m_actions = new PCB_ACTIONS();
    m_toolDispatcher = new TOOL_DISPATCHER( m_toolManager );

    GetCanvas()->SetEventDispatcher( m_toolDispatcher );

    m_toolManager->RegisterTool( new COMMON_CONTROL );
    m_toolManager->RegisterTool( new COMMON_TOOLS );
    m_toolManager->RegisterTool( new PCB_SELECTION_TOOL );
    m_toolManager->RegisterTool( new ZOOM_TOOL );
    m_toolManager->RegisterTool( new EDIT_TOOL );
    m_toolManager->RegisterTool( new PAD_TOOL );
    m_toolManager->RegisterTool( new DRAWING_TOOL );
    m_toolManager->RegisterTool( new PCB_POINT_EDITOR );
    m_toolManager->RegisterTool( new PCB_CONTROL );            // copy/paste
    m_toolManager->RegisterTool( new FOOTPRINT_EDITOR_CONTROL );
    m_toolManager->RegisterTool( new ALIGN_DISTRIBUTE_TOOL );
    m_toolManager->RegisterTool( new PCB_PICKER_TOOL );
    m_toolManager->RegisterTool( new POSITION_RELATIVE_TOOL );
    m_toolManager->RegisterTool( new PCB_VIEWER_TOOLS );
    m_toolManager->RegisterTool( new GROUP_TOOL );
    m_toolManager->RegisterTool( new CONVERT_TOOL );
    m_toolManager->RegisterTool( new SCRIPTING_TOOL );

    for( TOOL_BASE* tool : m_toolManager->Tools() )
    {
        if( PCB_TOOL_BASE* pcbTool = dynamic_cast<PCB_TOOL_BASE*>( tool ) )
            pcbTool->SetIsFootprintEditor( true );
    }

    m_toolManager->GetTool<PCB_VIEWER_TOOLS>()->SetFootprintFrame( true );
    m_toolManager->InitTools();

    m_toolManager->InvokeTool( "pcbnew.InteractiveSelection" );
}


void FOOTPRINT_EDIT_FRAME::setupUIConditions()
{
    PCB_BASE_EDIT_FRAME::setupUIConditions();

    ACTION_MANAGER*       mgr = m_toolManager->GetActionManager();
    PCB_EDITOR_CONDITIONS cond( this );

    wxASSERT( mgr );

#define ENABLE( x ) ACTION_CONDITIONS().Enable( x )
#define CHECK( x )  ACTION_CONDITIONS().Check( x )

    auto haveFootprintCond =
            [this]( const SELECTION& )
            {
                return GetBoard()->GetFirstFootprint() != nullptr;
            };

    auto footprintTargettedCond =
            [this]( const SELECTION& )
            {
                return !GetTargetFPID().GetLibItemName().empty();
            };

    mgr->SetConditions( ACTIONS::saveAs,                 ENABLE( footprintTargettedCond ) );
    mgr->SetConditions( ACTIONS::revert,                 ENABLE( cond.ContentModified() ) );
    mgr->SetConditions( ACTIONS::save,                   ENABLE( SELECTION_CONDITIONS::ShowAlways ) );

    mgr->SetConditions( ACTIONS::undo,                   ENABLE( cond.UndoAvailable() ) );
    mgr->SetConditions( ACTIONS::redo,                   ENABLE( cond.RedoAvailable() ) );

    mgr->SetConditions( ACTIONS::toggleGrid,             CHECK( cond.GridVisible() ) );
    mgr->SetConditions( ACTIONS::toggleCursorStyle,      CHECK( cond.FullscreenCursor() ) );
    mgr->SetConditions( ACTIONS::millimetersUnits,       CHECK( cond.Units( EDA_UNITS::MILLIMETRES ) ) );
    mgr->SetConditions( ACTIONS::inchesUnits,            CHECK( cond.Units( EDA_UNITS::INCHES ) ) );
    mgr->SetConditions( ACTIONS::milsUnits,              CHECK( cond.Units( EDA_UNITS::MILS ) ) );

    mgr->SetConditions( ACTIONS::cut,                    ENABLE( cond.HasItems() ) );
    mgr->SetConditions( ACTIONS::copy,                   ENABLE( cond.HasItems() ) );
    mgr->SetConditions( ACTIONS::paste,                  ENABLE( SELECTION_CONDITIONS::Idle && cond.NoActiveTool() ) );
    mgr->SetConditions( ACTIONS::pasteSpecial,           ENABLE( SELECTION_CONDITIONS::Idle && cond.NoActiveTool() ) );
    mgr->SetConditions( ACTIONS::doDelete,               ENABLE( cond.HasItems() ) );
    mgr->SetConditions( ACTIONS::duplicate,              ENABLE( cond.HasItems() ) );
    mgr->SetConditions( ACTIONS::selectAll,              ENABLE( cond.HasItems() ) );

    auto haveAtLeastOneGroupCond =
            []( const SELECTION& aSel )
            {
                for( EDA_ITEM* item : aSel )
                {
                    if( item->Type() == PCB_GROUP_T )
                        return true;
                }

                return false;
            };

    mgr->SetConditions( PCB_ACTIONS::rotateCw,           ENABLE( cond.HasItems() ) );
    mgr->SetConditions( PCB_ACTIONS::rotateCcw,          ENABLE( cond.HasItems() ) );
    mgr->SetConditions( PCB_ACTIONS::mirror,             ENABLE( cond.HasItems() ) );
    mgr->SetConditions( PCB_ACTIONS::group,              ENABLE( SELECTION_CONDITIONS::MoreThan( 1 ) ) );
    mgr->SetConditions( PCB_ACTIONS::ungroup,            ENABLE( haveAtLeastOneGroupCond ) );

    mgr->SetConditions( PCB_ACTIONS::padDisplayMode,     CHECK( !cond.PadFillDisplay() ) );
    mgr->SetConditions( PCB_ACTIONS::textOutlines,       CHECK( !cond.TextFillDisplay() ) );
    mgr->SetConditions( PCB_ACTIONS::graphicsOutlines,   CHECK( !cond.GraphicsFillDisplay() ) );

    mgr->SetConditions( ACTIONS::zoomTool,               CHECK( cond.CurrentTool( ACTIONS::zoomTool ) ) );
    mgr->SetConditions( ACTIONS::selectionTool,          CHECK( cond.CurrentTool( ACTIONS::selectionTool ) ) );

    auto highContrastCond =
            [this]( const SELECTION& )
            {
                return GetDisplayOptions().m_ContrastModeDisplay != HIGH_CONTRAST_MODE::NORMAL;
            };

    auto boardFlippedCond =
            [this]( const SELECTION& )
            {
                return GetCanvas()->GetView()->IsMirroredX();
            };

    auto footprintTreeCond =
            [this](const SELECTION& )
            {
                return IsSearchTreeShown();
            };

    auto layerManagerCond =
            [this]( const SELECTION& )
            {
                return m_auimgr.GetPane( "LayersManager" ).IsShown();
            };

    mgr->SetConditions( ACTIONS::highContrastMode,          CHECK( highContrastCond ) );
    mgr->SetConditions( PCB_ACTIONS::flipBoard,             CHECK( boardFlippedCond ) );
    mgr->SetConditions( ACTIONS::toggleBoundingBoxes,       CHECK( cond.BoundingBoxes() ) );

    mgr->SetConditions( PCB_ACTIONS::showFootprintTree,     CHECK( footprintTreeCond ) );
    mgr->SetConditions( PCB_ACTIONS::showLayersManager,     CHECK( layerManagerCond ) );

    mgr->SetConditions( ACTIONS::print,                     ENABLE( haveFootprintCond ) );
    mgr->SetConditions( PCB_ACTIONS::exportFootprint,       ENABLE( haveFootprintCond ) );
    mgr->SetConditions( PCB_ACTIONS::placeImportedGraphics, ENABLE( haveFootprintCond ) );

    mgr->SetConditions( PCB_ACTIONS::footprintProperties,   ENABLE( haveFootprintCond ) );
    mgr->SetConditions( PCB_ACTIONS::editTextAndGraphics,   ENABLE( haveFootprintCond ) );
    mgr->SetConditions( PCB_ACTIONS::checkFootprint,        ENABLE( haveFootprintCond ) );
    mgr->SetConditions( PCB_ACTIONS::repairFootprint,       ENABLE( haveFootprintCond ) );
    mgr->SetConditions( PCB_ACTIONS::cleanupGraphics,       ENABLE( haveFootprintCond ) );


// Only enable a tool if the part is edtable
#define CURRENT_EDIT_TOOL( action ) mgr->SetConditions( action, \
                                    ACTION_CONDITIONS().Enable( haveFootprintCond ).Check( cond.CurrentTool( action ) ) )

    CURRENT_EDIT_TOOL( ACTIONS::deleteTool );
    CURRENT_EDIT_TOOL( ACTIONS::measureTool );
    CURRENT_EDIT_TOOL( PCB_ACTIONS::placePad );
    CURRENT_EDIT_TOOL( PCB_ACTIONS::drawLine );
    CURRENT_EDIT_TOOL( PCB_ACTIONS::drawRectangle );
    CURRENT_EDIT_TOOL( PCB_ACTIONS::drawCircle );
    CURRENT_EDIT_TOOL( PCB_ACTIONS::drawArc );
    CURRENT_EDIT_TOOL( PCB_ACTIONS::drawPolygon );
    CURRENT_EDIT_TOOL( PCB_ACTIONS::drawRuleArea );
    CURRENT_EDIT_TOOL( PCB_ACTIONS::placeText );
    CURRENT_EDIT_TOOL( PCB_ACTIONS::drawTextBox );
    CURRENT_EDIT_TOOL( PCB_ACTIONS::drawAlignedDimension );
    CURRENT_EDIT_TOOL( PCB_ACTIONS::drawOrthogonalDimension );
    CURRENT_EDIT_TOOL( PCB_ACTIONS::drawCenterDimension );
    CURRENT_EDIT_TOOL( PCB_ACTIONS::drawRadialDimension );
    CURRENT_EDIT_TOOL( PCB_ACTIONS::drawLeader );
    CURRENT_EDIT_TOOL( PCB_ACTIONS::setAnchor );
    CURRENT_EDIT_TOOL( PCB_ACTIONS::gridSetOrigin );

#undef CURRENT_EDIT_TOOL
#undef ENABLE
#undef CHECK
}


void FOOTPRINT_EDIT_FRAME::ActivateGalCanvas()
{
    PCB_BASE_EDIT_FRAME::ActivateGalCanvas();

    // Be sure the axis are enabled
    GetCanvas()->GetGAL()->SetAxesEnabled( true );

    UpdateView();

    // Ensure the m_Layers settings are using the canvas type:
    UpdateUserInterface();
}


void FOOTPRINT_EDIT_FRAME::CommonSettingsChanged( bool aEnvVarsChanged, bool aTextVarsChanged )
{
    PCB_BASE_EDIT_FRAME::CommonSettingsChanged( aEnvVarsChanged, aTextVarsChanged );

    auto cfg = Pgm().GetSettingsManager().GetAppSettings<FOOTPRINT_EDITOR_SETTINGS>();
    GetGalDisplayOptions().ReadWindowSettings( cfg->m_Window );

    GetCanvas()->GetView()->UpdateAllLayersColor();
    GetCanvas()->GetView()->MarkTargetDirty( KIGFX::TARGET_NONCACHED );
    GetCanvas()->ForceRefresh();

    UpdateUserInterface();

    if( aEnvVarsChanged )
        SyncLibraryTree( true );

    Layout();
    SendSizeEvent();
}


void FOOTPRINT_EDIT_FRAME::OnSaveFootprintAsPng( wxCommandEvent& event )
{
    wxString   fullFileName;

    LIB_ID id = GetLoadedFPID();

    if( id.empty() )
    {
        wxMessageBox( _( "No footprint selected." ) );
        return;
    }

    wxFileName fn( id.GetLibItemName() );
    fn.SetExt( wxT( "png" ) );

    wxString projectPath = wxPathOnly( Prj().GetProjectFullName() );

    wxFileDialog dlg( this, _( "Footprint Image File Name" ), projectPath,
                      fn.GetFullName(), PngFileWildcard(), wxFD_SAVE | wxFD_OVERWRITE_PROMPT );

    if( dlg.ShowModal() == wxID_CANCEL || dlg.GetPath().IsEmpty() )
        return;

    // calling wxYield is mandatory under Linux, after closing the file selector dialog
    // to refresh the screen before creating the PNG or JPEG image from screen
    wxYield();
    SaveCanvasImageToFile( this, dlg.GetPath() );
}