kicad/pcbnew/tools/pcbnew_control.cpp

/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2014-2016 CERN
 * @author Maciej Suminski <maciej.suminski@cern.ch>
 *
 * 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 <cstdint>

#include "pcbnew_control.h"
#include "pcb_actions.h"
#include "selection_tool.h"
#include "edit_tool.h"
#include "picker_tool.h"
#include "pcb_editor_control.h"
#include "grid_helper.h"

#include <class_board.h>
#include <class_module.h>
#include <class_track.h>
#include <class_zone.h>
#include <pcb_screen.h>

#include <confirm.h>
#include <hotkeys.h>
#include <properties.h>
#include <io_mgr.h>
#include <kicad_plugin.h>
#include <kicad_clipboard.h>

#include <pcbnew_id.h>
#include <pcb_edit_frame.h>
#include <pcb_draw_panel_gal.h>
#include <connectivity/connectivity_data.h>
#include <tool/tool_manager.h>
#include <gal/graphics_abstraction_layer.h>
#include <view/view_controls.h>
#include <pcb_painter.h>
#include <origin_viewitem.h>
#include <board_commit.h>
#include <bitmaps.h>

#include <functional>
using namespace std::placeholders;


// files.cpp
extern bool AskLoadBoardFileName( wxWindow* aParent, int* aCtl, wxString* aFileName,
                                    bool aKicadFilesOnly = false );
extern IO_MGR::PCB_FILE_T plugin_type( const wxString& aFileName, int aCtl );


// Display modes
TOOL_ACTION PCB_ACTIONS::trackDisplayMode( "pcbnew.Control.trackDisplayMode",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_SWITCH_TRACK_DISPLAY_MODE ),
        "", "" );

TOOL_ACTION PCB_ACTIONS::padDisplayMode( "pcbnew.Control.padDisplayMode",
        AS_GLOBAL, 0,
        "", "" );

TOOL_ACTION PCB_ACTIONS::viaDisplayMode( "pcbnew.Control.viaDisplayMode",
        AS_GLOBAL, 0,
        "", "" );

TOOL_ACTION PCB_ACTIONS::graphicDisplayMode( "pcbnew.Control.graphicDisplayMode",
      AS_GLOBAL, 0,
      "", "" );

TOOL_ACTION PCB_ACTIONS::moduleEdgeOutlines( "pcbnew.Control.graphicOutlines",
        AS_GLOBAL, 0,
        "", "" );

TOOL_ACTION PCB_ACTIONS::moduleTextOutlines( "pcbnew.Control.textOutlines",
       AS_GLOBAL, 0,
       "", "" );

TOOL_ACTION PCB_ACTIONS::zoneDisplayEnable( "pcbnew.Control.zoneDisplayEnable",
        AS_GLOBAL, 0,
        "", "" );

TOOL_ACTION PCB_ACTIONS::zoneDisplayDisable( "pcbnew.Control.zoneDisplayDisable",
        AS_GLOBAL, 0,
        "", "" );

TOOL_ACTION PCB_ACTIONS::zoneDisplayOutlines( "pcbnew.Control.zoneDisplayOutlines",
        AS_GLOBAL, 0,
        "", "" );

TOOL_ACTION PCB_ACTIONS::highContrastMode( "pcbnew.Control.highContrastMode",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_SWITCH_HIGHCONTRAST_MODE ),
        "", "" );

TOOL_ACTION PCB_ACTIONS::highContrastInc( "pcbnew.Control.highContrastInc",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_HIGHCONTRAST_INC ),
        "", "" );

TOOL_ACTION PCB_ACTIONS::highContrastDec( "pcbnew.Control.highContrastDec",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_HIGHCONTRAST_DEC ),
        "", "" );


// Layer control
TOOL_ACTION PCB_ACTIONS::layerTop( "pcbnew.Control.layerTop",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_SWITCH_LAYER_TO_COMPONENT ),
        "", "", NULL, AF_NONE, (void*) F_Cu );

TOOL_ACTION PCB_ACTIONS::layerInner1( "pcbnew.Control.layerInner1",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_SWITCH_LAYER_TO_INNER1 ),
        "", "", NULL, AF_NONE, (void*) In1_Cu );

TOOL_ACTION PCB_ACTIONS::layerInner2( "pcbnew.Control.layerInner2",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_SWITCH_LAYER_TO_INNER2 ),
        "", "", NULL, AF_NONE, (void*) In2_Cu );

TOOL_ACTION PCB_ACTIONS::layerInner3( "pcbnew.Control.layerInner3",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_SWITCH_LAYER_TO_INNER3 ),
        "", "", NULL, AF_NONE, (void*) In3_Cu );

TOOL_ACTION PCB_ACTIONS::layerInner4( "pcbnew.Control.layerInner4",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_SWITCH_LAYER_TO_INNER4 ),
        "", "", NULL, AF_NONE, (void*) In4_Cu );

TOOL_ACTION PCB_ACTIONS::layerInner5( "pcbnew.Control.layerInner5",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_SWITCH_LAYER_TO_INNER5 ),
        "", "", NULL, AF_NONE, (void*) In5_Cu );

TOOL_ACTION PCB_ACTIONS::layerInner6( "pcbnew.Control.layerInner6",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_SWITCH_LAYER_TO_INNER6 ),
        "", "", NULL, AF_NONE, (void*) In6_Cu );

TOOL_ACTION PCB_ACTIONS::layerBottom( "pcbnew.Control.layerBottom",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_SWITCH_LAYER_TO_COPPER ),
        "", "", NULL, AF_NONE, (void*) B_Cu );

TOOL_ACTION PCB_ACTIONS::layerNext( "pcbnew.Control.layerNext",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_SWITCH_LAYER_TO_NEXT ),
        "", "" );

TOOL_ACTION PCB_ACTIONS::layerPrev( "pcbnew.Control.layerPrev",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_SWITCH_LAYER_TO_PREVIOUS ),
        "", "" );

TOOL_ACTION PCB_ACTIONS::layerToggle( "pcbnew.Control.layerToggle",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_ADD_THROUGH_VIA ),
        "", "" );

TOOL_ACTION PCB_ACTIONS::layerAlphaInc( "pcbnew.Control.layerAlphaInc",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_INC_LAYER_ALPHA ),
        "", "" );

TOOL_ACTION PCB_ACTIONS::layerAlphaDec( "pcbnew.Control.layerAlphaDec",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_DEC_LAYER_ALPHA ),
        "", "" );

TOOL_ACTION PCB_ACTIONS::layerChanged( "pcbnew.Control.layerChanged",
        AS_GLOBAL, 0,
        "", "", NULL, AF_NOTIFY );

// Miscellaneous
TOOL_ACTION PCB_ACTIONS::selectionTool( "pcbnew.Control.selectionTool",
        AS_GLOBAL, 0,
        "", "", NULL, AF_ACTIVATE );

TOOL_ACTION PCB_ACTIONS::resetCoords( "pcbnew.Control.resetCoords",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_RESET_LOCAL_COORD ),
        "", "" );

TOOL_ACTION PCB_ACTIONS::switchCursor( "pcbnew.Control.switchCursor",
        AS_GLOBAL, 0,
        "", "" );

TOOL_ACTION PCB_ACTIONS::switchUnits( "pcbnew.Control.switchUnits",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_SWITCH_UNITS ),
        "", "" );

TOOL_ACTION PCB_ACTIONS::deleteItemCursor( "pcbnew.Control.deleteItemCursor",
        AS_GLOBAL, 0,
        "", "" );

TOOL_ACTION PCB_ACTIONS::showHotkeyList( "pcbnew.Control.showHotkeyList",
        AS_GLOBAL, TOOL_ACTION::LegacyHotKey( HK_HELP ),
        "", "" );

TOOL_ACTION PCB_ACTIONS::showHelp( "pcbnew.Control.showHelp",
        AS_GLOBAL, 0,
        "", "" );

TOOL_ACTION PCB_ACTIONS::toBeDone( "pcbnew.Control.toBeDone",
        AS_GLOBAL, 0,           // dialog saying it is not implemented yet
        "", "" );               // so users are aware of that

TOOL_ACTION PCB_ACTIONS::pasteFromClipboard( "pcbnew.InteractiveEdit.pasteFromClipboard",
        AS_GLOBAL, 0,   // do not define a hotkey and let TranslateLegacyId() handle the event
        _( "Paste" ), _( "Paste content from clipboard" ),
        paste_xpm );


PCBNEW_CONTROL::PCBNEW_CONTROL() :
    PCB_TOOL( "pcbnew.Control" ), m_frame( NULL )
{
    m_gridOrigin.reset( new KIGFX::ORIGIN_VIEWITEM() );
}


PCBNEW_CONTROL::~PCBNEW_CONTROL()
{
}


void PCBNEW_CONTROL::Reset( RESET_REASON aReason )
{
    m_frame = getEditFrame<PCB_BASE_FRAME>();

    if( aReason == MODEL_RELOAD || aReason == GAL_SWITCH )
    {
        m_gridOrigin->SetPosition( board()->GetGridOrigin() );
        m_gridOrigin->SetColor( m_frame->GetGridColor() );
        getView()->Remove( m_gridOrigin.get() );
        getView()->Add( m_gridOrigin.get() );
    }
}

template<class T> void Flip( T& aValue )
{
    aValue = !aValue;
}

int PCBNEW_CONTROL::TrackDisplayMode( const TOOL_EVENT& aEvent )
{
    auto opts = displayOptions();

    Flip( opts->m_DisplayPcbTrackFill );
    view()->UpdateDisplayOptions( opts );

    for( auto track : board()->Tracks() )
    {
        if( track->Type() == PCB_TRACE_T )
            view()->Update( track, KIGFX::GEOMETRY );
    }

    canvas()->Refresh();

    return 0;
}

int PCBNEW_CONTROL::PadDisplayMode( const TOOL_EVENT& aEvent )
{
    auto opts = displayOptions();

    Flip( opts->m_DisplayPadFill );
    view()->UpdateDisplayOptions( opts );

    for( auto module : board()->Modules() ) // fixme: move to PCB_VIEW
    {
        for( auto pad : module->Pads() )
            view()->Update( pad, KIGFX::GEOMETRY );
    }

    canvas()->Refresh();

    return 0;
}


int PCBNEW_CONTROL::ViaDisplayMode( const TOOL_EVENT& aEvent )
{
    auto opts = displayOptions();

    Flip( opts->m_DisplayViaFill );
    view()->UpdateDisplayOptions( opts );

    for( auto track : board()->Tracks() )
    {
        if( track->Type() == PCB_TRACE_T || track->Type() == PCB_VIA_T )
            view()->Update( track, KIGFX::GEOMETRY );
    }

    canvas()->Refresh();

    return 0;
}


int PCBNEW_CONTROL::GraphicDisplayMode( const TOOL_EVENT& aEvent )
{
    auto opts = displayOptions();

    Flip( opts->m_DisplayDrawItemsFill );
    view()->UpdateDisplayOptions( opts );

    for( auto item : board()->Drawings() )
    {
        view()->Update( item, KIGFX::GEOMETRY );
    }

    canvas()->Refresh();

    return 0;
}


int PCBNEW_CONTROL::ModuleEdgeOutlines( const TOOL_EVENT& aEvent )
{
    auto opts = displayOptions();

    Flip( opts->m_DisplayModEdgeFill );
    view()->UpdateDisplayOptions( opts );

    for( auto module : board()->Modules() )
    {
        for( auto item : module->GraphicalItems() )
        {
            if( item->Type() == PCB_MODULE_EDGE_T )
                view()->Update( item, KIGFX::GEOMETRY );
        }
    }

    canvas()->Refresh();

    return 0;
}


int PCBNEW_CONTROL::ModuleTextOutlines( const TOOL_EVENT& aEvent )
{
    auto opts = displayOptions();

    Flip( opts->m_DisplayModTextFill );
    view()->UpdateDisplayOptions( opts );

    for( auto module : board()->Modules() )
    {
        for( auto item : module->GraphicalItems() )
        {
            if( item->Type() == PCB_MODULE_TEXT_T )
                view()->Update( item, KIGFX::GEOMETRY );
        }

        view()->Update( &module->Reference(), KIGFX::GEOMETRY );
        view()->Update( &module->Value(), KIGFX::GEOMETRY );
    }

    canvas()->Refresh();

    return 0;
}


int PCBNEW_CONTROL::ZoneDisplayMode( const TOOL_EVENT& aEvent )
{
    auto opts = displayOptions();

    // Apply new display options to the GAL canvas
    if( aEvent.IsAction( &PCB_ACTIONS::zoneDisplayEnable ) )
        opts->m_DisplayZonesMode = 0;
    else if( aEvent.IsAction( &PCB_ACTIONS::zoneDisplayDisable ) )
        opts->m_DisplayZonesMode = 1;
    else if( aEvent.IsAction( &PCB_ACTIONS::zoneDisplayOutlines ) )
        opts->m_DisplayZonesMode = 2;
    else
        wxFAIL;

    view()->UpdateDisplayOptions( opts );

    for( int i = 0; i < board()->GetAreaCount(); ++i )
        view()->Update( board()->GetArea( i ), KIGFX::GEOMETRY );

    canvas()->Refresh();

    return 0;
}


int PCBNEW_CONTROL::HighContrastMode( const TOOL_EVENT& aEvent )
{
    auto opts = displayOptions();

    Flip( opts->m_ContrastModeDisplay );
    view()->UpdateDisplayOptions( opts );
    canvas()->SetHighContrastLayer( m_frame->GetActiveLayer() );

    return 0;
}


int PCBNEW_CONTROL::HighContrastInc( const TOOL_EVENT& aEvent )
{
    return 0;
}


int PCBNEW_CONTROL::HighContrastDec( const TOOL_EVENT& aEvent )
{
    return 0;
}


// Layer control
int PCBNEW_CONTROL::LayerSwitch( const TOOL_EVENT& aEvent )
{
    m_frame->SwitchLayer( NULL, (PCB_LAYER_ID) aEvent.Parameter<intptr_t>() );

    return 0;
}


int PCBNEW_CONTROL::LayerNext( const TOOL_EVENT& aEvent )
{
    PCB_BASE_FRAME* editFrame = m_frame;
    LAYER_NUM layer = editFrame->GetActiveLayer();

    if( layer < F_Cu || layer > B_Cu )
        return 0;

    int layerCount = board()->GetCopperLayerCount();

    if( layer == layerCount - 2 || layerCount < 2 )
        layer = B_Cu;
    else if( layer == B_Cu )
        layer = F_Cu;
    else
        ++layer;

    wxCHECK( IsCopperLayer( layer ), 0 );
    editFrame->SwitchLayer( NULL, ToLAYER_ID( layer ) );

    return 0;
}


int PCBNEW_CONTROL::LayerPrev( const TOOL_EVENT& aEvent )
{
    PCB_BASE_FRAME* editFrame = m_frame;
    LAYER_NUM layer = editFrame->GetActiveLayer();

    if( layer < F_Cu || layer > B_Cu )
        return 0;

    int layerCount = board()->GetCopperLayerCount();

    if( layer == F_Cu || layerCount < 2 )
        layer = B_Cu;
    else if( layer == B_Cu )
        layer = layerCount - 2;
    else
        --layer;

    wxCHECK( IsCopperLayer( layer ), 0 );
    editFrame->SwitchLayer( NULL, ToLAYER_ID( layer ) );

    return 0;
}


int PCBNEW_CONTROL::LayerToggle( const TOOL_EVENT& aEvent )
{
    LAYER_NUM currentLayer = m_frame->GetActiveLayer();
    PCB_SCREEN* screen = m_frame->GetScreen();

    if( currentLayer == screen->m_Route_Layer_TOP )
        m_frame->SwitchLayer( NULL, screen->m_Route_Layer_BOTTOM );
    else
        m_frame->SwitchLayer( NULL, screen->m_Route_Layer_TOP );

    return 0;
}


// It'd be nice to share the min/max with the DIALOG_COLOR_PICKER, but those are
// set in wxFormBuilder.
#define ALPHA_MIN 0.20
#define ALPHA_MAX 1.00
#define ALPHA_STEP 0.05

int PCBNEW_CONTROL::LayerAlphaInc( const TOOL_EVENT& aEvent )
{
    auto& settings = m_frame->Settings().Colors();

    LAYER_NUM currentLayer = m_frame->GetActiveLayer();
    KIGFX::COLOR4D currentColor = settings.GetLayerColor( currentLayer );

    if( currentColor.a <= ALPHA_MAX - ALPHA_STEP )
    {
        currentColor.a += ALPHA_STEP;
        settings.SetLayerColor( currentLayer, currentColor );

        KIGFX::VIEW* view = m_frame->GetGalCanvas()->GetView();
        view->GetPainter()->GetSettings()->ImportLegacyColors( &settings );
        view->UpdateLayerColor( currentLayer );

        wxUpdateUIEvent dummy;
        static_cast<PCB_EDIT_FRAME*>( m_frame )->OnUpdateLayerAlpha( dummy );
    }
    else
        wxBell();

    return 0;
}


int PCBNEW_CONTROL::LayerAlphaDec( const TOOL_EVENT& aEvent )
{
    auto& settings = m_frame->Settings().Colors();

    LAYER_NUM currentLayer = m_frame->GetActiveLayer();
    KIGFX::COLOR4D currentColor = settings.GetLayerColor( currentLayer );

    if( currentColor.a >= ALPHA_MIN + ALPHA_STEP )
    {
        currentColor.a -= ALPHA_STEP;
        settings.SetLayerColor( currentLayer, currentColor );

        KIGFX::VIEW* view = m_frame->GetGalCanvas()->GetView();
        view->GetPainter()->GetSettings()->ImportLegacyColors( &settings );
        view->UpdateLayerColor( currentLayer );

        wxUpdateUIEvent dummy;
        static_cast<PCB_BASE_FRAME*>( m_frame )->OnUpdateLayerAlpha( dummy );
    }
    else
        wxBell();

    return 0;
}


// Grid control
int PCBNEW_CONTROL::GridFast1( const TOOL_EVENT& aEvent )
{
    m_frame->SetFastGrid1();
    updateGrid();

    return 0;
}


int PCBNEW_CONTROL::GridFast2( const TOOL_EVENT& aEvent )
{
    m_frame->SetFastGrid2();
    updateGrid();

    return 0;
}


bool PCBNEW_CONTROL::DoSetGridOrigin( KIGFX::VIEW* aView, PCB_BASE_FRAME* aFrame,
                                      BOARD_ITEM* originViewItem, const VECTOR2D& aPoint )
{
    aFrame->SetGridOrigin( wxPoint( aPoint.x, aPoint.y ) );
    aView->GetGAL()->SetGridOrigin( aPoint );
    originViewItem->SetPosition( wxPoint( aPoint.x, aPoint.y ) );
    aView->MarkDirty();
    aFrame->OnModify();
    return true;
}


bool PCBNEW_CONTROL::SetGridOrigin( KIGFX::VIEW* aView, PCB_BASE_FRAME* aFrame,
                                    BOARD_ITEM* originViewItem, const VECTOR2D& aPoint )
{
    aFrame->SaveCopyInUndoList( originViewItem, UR_GRIDORIGIN );
    return DoSetGridOrigin( aView, aFrame, originViewItem, aPoint );
}


int PCBNEW_CONTROL::GridSetOrigin( const TOOL_EVENT& aEvent )
{
    VECTOR2D* origin = aEvent.Parameter<VECTOR2D*>();

    if( origin )
    {
        // We can't undo the other grid dialog settings, so no sense undoing just the origin

        DoSetGridOrigin( getView(), m_frame, m_gridOrigin.get(), *origin );
        delete origin;
    }
    else
    {
        if( m_editModules && !getEditFrame<PCB_BASE_EDIT_FRAME>()->GetModel() )
            return 0;

        Activate();

        PICKER_TOOL* picker = m_toolMgr->GetTool<PICKER_TOOL>();
        wxCHECK( picker, 0 );

        // TODO it will not check the toolbar button in module editor, as it uses a different ID..
        m_frame->SetToolID( ID_PCB_PLACE_GRID_COORD_BUTT, wxCURSOR_PENCIL, _( "Adjust grid origin" ) );
        picker->SetClickHandler( std::bind( SetGridOrigin, getView(), m_frame, m_gridOrigin.get(), _1 ) );
        picker->Activate();
        Wait();
    }

    return 0;
}


int PCBNEW_CONTROL::GridResetOrigin( const TOOL_EVENT& aEvent )
{
    SetGridOrigin( getView(), m_frame, m_gridOrigin.get(), VECTOR2D( 0, 0 ) );

    return 0;
}


// Miscellaneous
int PCBNEW_CONTROL::ResetCoords( const TOOL_EVENT& aEvent )
{
    auto vcSettings = m_toolMgr->GetCurrentToolVC();

    // Use either the active tool forced cursor position or the general settings
    VECTOR2I cursorPos = vcSettings.m_forceCursorPosition ? vcSettings.m_forcedPosition :
                         getViewControls()->GetCursorPosition();

    m_frame->GetScreen()->m_O_Curseur = wxPoint( cursorPos.x, cursorPos.y );
    m_frame->UpdateStatusBar();

    return 0;
}


int PCBNEW_CONTROL::SwitchCursor( const TOOL_EVENT& aEvent )
{
    auto& galOpts = m_frame->GetGalDisplayOptions();

    galOpts.m_fullscreenCursor = !galOpts.m_fullscreenCursor;
    galOpts.NotifyChanged();

    return 0;
}


int PCBNEW_CONTROL::SwitchUnits( const TOOL_EVENT& aEvent )
{
    // TODO should not it be refactored to pcb_frame member function?
    wxCommandEvent evt( wxEVT_COMMAND_MENU_SELECTED );

    if( m_frame->GetUserUnits() == INCHES )
        evt.SetId( ID_TB_OPTIONS_SELECT_UNIT_MM );
    else
        evt.SetId( ID_TB_OPTIONS_SELECT_UNIT_INCH );

    m_frame->ProcessEvent( evt );

    return 0;
}


static bool deleteItem( TOOL_MANAGER* aToolMgr, const VECTOR2D& aPosition )
{
    SELECTION_TOOL* selectionTool = aToolMgr->GetTool<SELECTION_TOOL>();
    wxCHECK( selectionTool, false );

    aToolMgr->RunAction( PCB_ACTIONS::selectionClear, true );

    const SELECTION& selection = selectionTool->RequestSelection(
            []( const VECTOR2I& aPt, GENERAL_COLLECTOR& aCollector )
            { EditToolSelectionFilter( aCollector, EXCLUDE_LOCKED ); } );

    if( selection.Empty() )
        return true;

    aToolMgr->RunAction( PCB_ACTIONS::remove, true );

    return true;
}


int PCBNEW_CONTROL::DeleteItemCursor( const TOOL_EVENT& aEvent )
{
    if( m_editModules && !m_frame->GetBoard()->m_Modules )
        return 0;

    Activate();

    PICKER_TOOL* picker = m_toolMgr->GetTool<PICKER_TOOL>();
    wxCHECK( picker, 0 );

    m_frame->SetToolID( m_editModules ? ID_MODEDIT_DELETE_TOOL : ID_PCB_DELETE_ITEM_BUTT,
            wxCURSOR_BULLSEYE, _( "Delete item" ) );
    picker->SetSnapping( false );
    picker->SetClickHandler( std::bind( deleteItem, m_toolMgr, _1 ) );
    picker->Activate();
    Wait();

    return 0;
}


int PCBNEW_CONTROL::PasteItemsFromClipboard( const TOOL_EVENT& aEvent )
{
    CLIPBOARD_IO pi;
    BOARD_ITEM* clipItem = pi.Parse();

    if( !clipItem )
        return 0;

    if( clipItem->Type() == PCB_T )
        static_cast<BOARD*>( clipItem )->ClearAllNetCodes();

    bool editModules = m_editModules || frame()->IsType( FRAME_PCB_MODULE_EDITOR );

    // The clipboard can contain two different things, an entire kicad_pcb
    // or a single module

    if( editModules && ( !board() || !module() ) )
    {
        wxLogDebug( wxT( "Attempting to paste to empty module editor window\n") );
        return 0;
    }

    switch( clipItem->Type() )
    {
        case PCB_T:
        {
            if( editModules )
            {
                wxLogDebug( wxT( "attempting to paste a pcb in the footprint editor\n") );
                return 0;
            }

            placeBoardItems( static_cast<BOARD*>( clipItem ) );
            break;
        }

        case PCB_MODULE_T:
        {
            std::vector<BOARD_ITEM*> items;

            clipItem->SetParent( board() );

            if( editModules )
            {
                auto oldModule = static_cast<MODULE*>( clipItem );
                auto newModule = board()->m_Modules.GetFirst();

                for( D_PAD* pad = oldModule->PadsList(), *next = nullptr; pad; pad = next )
                {
                    next = pad->Next();
                    oldModule->Remove( pad );
                    pad->SetParent( newModule );
                    items.push_back( pad );
                }

                for( BOARD_ITEM* item = oldModule->GraphicalItemsList(), *next = nullptr;
                        item; item = next )
                {
                    next = item->Next();
                    oldModule->Remove( item );
                    item->SetParent( newModule );
                    items.push_back( item );
                }
            }
            else
            {
                items.push_back( clipItem );
            }

            placeBoardItems( items, true );
            break;
        }

        default:
            m_frame->DisplayToolMsg( _( "Invalid clipboard contents" ) );
            break;
    }

    return 1;
}


int PCBNEW_CONTROL::AppendBoardFromFile( const TOOL_EVENT& aEvent )
{
    int open_ctl;
    wxString fileName;

    PCB_EDIT_FRAME* editFrame = dynamic_cast<PCB_EDIT_FRAME*>( m_frame );

    if( !editFrame )
        return 1;

    // Pick a file to append
    if( !AskLoadBoardFileName( editFrame, &open_ctl, &fileName, true ) )
        return 1;

    IO_MGR::PCB_FILE_T pluginType = plugin_type( fileName, open_ctl );
    PLUGIN::RELEASER pi( IO_MGR::PluginFind( pluginType ) );

    return AppendBoard( *pi, fileName );
}


// Helper function for PCBNEW_CONTROL::placeBoardItems()
template<typename T>
static void moveNoFlagToVector( DLIST<T>& aList, std::vector<BOARD_ITEM*>& aTarget, bool aIsNew )
{
    for( auto obj = aIsNew ? aList.PopFront() : aList.GetFirst(); obj;
            obj = aIsNew ? aList.PopFront() : obj->Next() )
    {
        if( obj->GetFlags() & FLAG0 )
            obj->ClearFlags( FLAG0 );
        else
            aTarget.push_back( obj );
    }
}

static void moveNoFlagToVector(  ZONE_CONTAINERS& aList, std::vector<BOARD_ITEM*>& aTarget, bool aIsNew )
{
    if( aList.size() == 0 )
        return;

    auto obj = aList.front();
    int idx = 0;

    if( aIsNew )
    {
        obj = aList.back();
        aList.pop_back();
    }

    for( ; obj ; )
    {
        if( obj->GetFlags() & FLAG0 )
            obj->ClearFlags( FLAG0 );
        else
            aTarget.push_back( obj );

        if( aIsNew )
        {
            if( aList.size() )
            {
                obj = aList.back();
                aList.pop_back();
            }
            else
                obj = nullptr;
        }
        else
            obj = idx < int(aList.size()-1) ? aList[++idx] : nullptr;
    }
}



int PCBNEW_CONTROL::placeBoardItems( BOARD* aBoard )
{
    // items are new if the current board is not the board source
    bool isNew = board() != aBoard;
    std::vector<BOARD_ITEM*> items;

    moveNoFlagToVector( aBoard->m_Track, items, isNew );
    moveNoFlagToVector( aBoard->m_Modules, items, isNew );
    moveNoFlagToVector( aBoard->DrawingsList(), items, isNew );
    moveNoFlagToVector( aBoard->Zones(), items, isNew );

    return placeBoardItems( items, isNew );
}


int PCBNEW_CONTROL::placeBoardItems( std::vector<BOARD_ITEM*>& aItems, bool aIsNew )
{
    m_toolMgr->RunAction( PCB_ACTIONS::selectionClear, true );

    auto selectionTool = m_toolMgr->GetTool<SELECTION_TOOL>();
    auto editTool = m_toolMgr->GetTool<EDIT_TOOL>();

    SELECTION& selection = selectionTool->GetSelection();

    for( auto item : aItems )
    {
        item->SetSelected();
        selection.Add( item );

        // Add or just select items for the move/place command
        if( aIsNew )
            editTool->GetCurrentCommit()->Add( item );
        else
            editTool->GetCurrentCommit()->Added( item );
    }

    selection.SetReferencePoint( VECTOR2I( 0, 0 ) );

    m_toolMgr->ProcessEvent( SELECTION_TOOL::SelectedEvent );
    m_toolMgr->RunAction( PCB_ACTIONS::move, true );

    return 0;
}


int PCBNEW_CONTROL::AppendBoard( PLUGIN& pi, wxString& fileName )
{
    PCB_EDIT_FRAME* editFrame = dynamic_cast<PCB_EDIT_FRAME*>( m_frame );

    if( !editFrame )
        return 1;

    BOARD* brd = board();

    if( !brd )
        return 1;

    // Mark existing items, in order to know what are the new items
    // to be ble to select only the new items after loadind
    for( auto track : brd->Tracks() )
    {
        track->SetFlags( FLAG0 );
    }

    for( auto module : brd->Modules() )
    {
        module->SetFlags( FLAG0 );
    }

    for( auto drawing : brd->Drawings() )
    {
        drawing->SetFlags( FLAG0 );
    }

    for( auto zone : brd->Zones() )
    {
        zone->SetFlags( FLAG0 );
    }

    // Keep also the count of copper layers, to adjust if necessary
    int initialCopperLayerCount = brd->GetCopperLayerCount();
    LSET initialEnabledLayers = brd->GetEnabledLayers();

    // Load the data
    try
    {
        PROPERTIES  props;
        char        xbuf[30];
        char        ybuf[30];

        // EAGLE_PLUGIN can use this info to center the BOARD, but it does not yet.
        sprintf( xbuf, "%d", editFrame->GetPageSizeIU().x );
        sprintf( ybuf, "%d", editFrame->GetPageSizeIU().y );

        props["page_width"]  = xbuf;
        props["page_height"] = ybuf;

        editFrame->GetDesignSettings().m_NetClasses.Clear();
        pi.Load( fileName, brd, &props );
    }
    catch( const IO_ERROR& ioe )
    {
        wxString msg = wxString::Format( _( "Error loading board.\n%s" ), GetChars( ioe.What() ));
        DisplayError( editFrame, msg );

        return 0;
    }

    // rebuild nets and ratsnest before any use of nets
    brd->BuildListOfNets();
    brd->SynchronizeNetsAndNetClasses();
    brd->BuildConnectivity();

    // Synchronize layers
    // we should not ask PLUGINs to do these items:
    int copperLayerCount = brd->GetCopperLayerCount();

    if( copperLayerCount > initialCopperLayerCount )
        brd->SetCopperLayerCount( copperLayerCount );

    // Enable all used layers, and make them visible:
    LSET enabledLayers = brd->GetEnabledLayers();
    enabledLayers |= initialEnabledLayers;
    brd->SetEnabledLayers( enabledLayers );
    brd->SetVisibleLayers( enabledLayers );

    return placeBoardItems( brd );
}


int PCBNEW_CONTROL::ShowHotkeyList( const TOOL_EVENT& aEvent )
{
    DisplayHotkeyList( m_frame, m_frame->GetHotkeyConfig() );

    return 0;
}


int PCBNEW_CONTROL::ShowHelp( const TOOL_EVENT& aEvent )
{
    wxCommandEvent dummyEvent;
    dummyEvent.SetId( wxID_HELP );
    m_frame->GetKicadHelp( dummyEvent );

    return 0;
}


int PCBNEW_CONTROL::ToBeDone( const TOOL_EVENT& aEvent )
{
    DisplayInfoMessage( m_frame, _( "Not available in OpenGL/Cairo canvases." ) );

    return 0;
}


void PCBNEW_CONTROL::setTransitions()
{
    // Display modes
    Go( &PCBNEW_CONTROL::TrackDisplayMode,   PCB_ACTIONS::trackDisplayMode.MakeEvent() );
    Go( &PCBNEW_CONTROL::PadDisplayMode,     PCB_ACTIONS::padDisplayMode.MakeEvent() );
    Go( &PCBNEW_CONTROL::ViaDisplayMode,     PCB_ACTIONS::viaDisplayMode.MakeEvent() );
    Go( &PCBNEW_CONTROL::GraphicDisplayMode, PCB_ACTIONS::graphicDisplayMode.MakeEvent() );
    Go( &PCBNEW_CONTROL::ModuleEdgeOutlines, PCB_ACTIONS::moduleEdgeOutlines.MakeEvent() );
    Go( &PCBNEW_CONTROL::ModuleTextOutlines, PCB_ACTIONS::moduleTextOutlines.MakeEvent() );
    Go( &PCBNEW_CONTROL::ZoneDisplayMode,    PCB_ACTIONS::zoneDisplayEnable.MakeEvent() );
    Go( &PCBNEW_CONTROL::ZoneDisplayMode,    PCB_ACTIONS::zoneDisplayDisable.MakeEvent() );
    Go( &PCBNEW_CONTROL::ZoneDisplayMode,    PCB_ACTIONS::zoneDisplayOutlines.MakeEvent() );
    Go( &PCBNEW_CONTROL::HighContrastMode,   PCB_ACTIONS::highContrastMode.MakeEvent() );
    Go( &PCBNEW_CONTROL::HighContrastInc,    PCB_ACTIONS::highContrastInc.MakeEvent() );
    Go( &PCBNEW_CONTROL::HighContrastDec,    PCB_ACTIONS::highContrastDec.MakeEvent() );

    // Layer control
    Go( &PCBNEW_CONTROL::LayerSwitch,        PCB_ACTIONS::layerTop.MakeEvent() );
    Go( &PCBNEW_CONTROL::LayerSwitch,        PCB_ACTIONS::layerInner1.MakeEvent() );
    Go( &PCBNEW_CONTROL::LayerSwitch,        PCB_ACTIONS::layerInner2.MakeEvent() );
    Go( &PCBNEW_CONTROL::LayerSwitch,        PCB_ACTIONS::layerInner3.MakeEvent() );
    Go( &PCBNEW_CONTROL::LayerSwitch,        PCB_ACTIONS::layerInner4.MakeEvent() );
    Go( &PCBNEW_CONTROL::LayerSwitch,        PCB_ACTIONS::layerInner5.MakeEvent() );
    Go( &PCBNEW_CONTROL::LayerSwitch,        PCB_ACTIONS::layerInner6.MakeEvent() );
    Go( &PCBNEW_CONTROL::LayerSwitch,        PCB_ACTIONS::layerBottom.MakeEvent() );
    Go( &PCBNEW_CONTROL::LayerNext,          PCB_ACTIONS::layerNext.MakeEvent() );
    Go( &PCBNEW_CONTROL::LayerPrev,          PCB_ACTIONS::layerPrev.MakeEvent() );
    Go( &PCBNEW_CONTROL::LayerToggle,        PCB_ACTIONS::layerToggle.MakeEvent() );
    Go( &PCBNEW_CONTROL::LayerAlphaInc,      PCB_ACTIONS::layerAlphaInc.MakeEvent() );
    Go( &PCBNEW_CONTROL::LayerAlphaDec,      PCB_ACTIONS::layerAlphaDec.MakeEvent() );

    // Grid control
    Go( &PCBNEW_CONTROL::GridFast1,          ACTIONS::gridFast1.MakeEvent() );
    Go( &PCBNEW_CONTROL::GridFast2,          ACTIONS::gridFast2.MakeEvent() );
    Go( &PCBNEW_CONTROL::GridSetOrigin,      ACTIONS::gridSetOrigin.MakeEvent() );
    Go( &PCBNEW_CONTROL::GridResetOrigin,    ACTIONS::gridResetOrigin.MakeEvent() );

    // Miscellaneous
    Go( &PCBNEW_CONTROL::ResetCoords,        PCB_ACTIONS::resetCoords.MakeEvent() );
    Go( &PCBNEW_CONTROL::SwitchCursor,       PCB_ACTIONS::switchCursor.MakeEvent() );
    Go( &PCBNEW_CONTROL::SwitchUnits,        PCB_ACTIONS::switchUnits.MakeEvent() );
    Go( &PCBNEW_CONTROL::DeleteItemCursor,   PCB_ACTIONS::deleteItemCursor.MakeEvent() );
    Go( &PCBNEW_CONTROL::ShowHotkeyList,     PCB_ACTIONS::showHotkeyList.MakeEvent() );
    Go( &PCBNEW_CONTROL::ShowHelp,           PCB_ACTIONS::showHelp.MakeEvent() );
    Go( &PCBNEW_CONTROL::ToBeDone,           PCB_ACTIONS::toBeDone.MakeEvent() );

    // Append control
    Go( &PCBNEW_CONTROL::AppendBoardFromFile, PCB_ACTIONS::appendBoard.MakeEvent() );

    Go( &PCBNEW_CONTROL::PasteItemsFromClipboard, PCB_ACTIONS::pasteFromClipboard.MakeEvent() );
}


void PCBNEW_CONTROL::updateGrid()
{
    BASE_SCREEN* screen = m_frame->GetScreen();
    //GRID_TYPE grid = screen->GetGrid( idx );
    getView()->GetGAL()->SetGridSize( VECTOR2D( screen->GetGridSize() ) );
    getView()->MarkTargetDirty( KIGFX::TARGET_NONCACHED );
}