/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2014 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 "pcbnew_control.h"
#include "common_actions.h"

#include <pcbnew_id.h>
#include <wxPcbStruct.h>
#include <class_board.h>
#include <class_module.h>
#include <class_track.h>
#include <class_zone.h>
#include <class_draw_panel_gal.h>
#include <class_pcb_screen.h>
#include <confirm.h>

#include <gal/graphics_abstraction_layer.h>
#include <view/view_controls.h>
#include <pcb_painter.h>


PCBNEW_CONTROL::PCBNEW_CONTROL() :
    TOOL_INTERACTIVE( "pcbnew.Control" ), m_frame( NULL )
{
}


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


bool PCBNEW_CONTROL::Init()
{
    setTransitions();

    return true;
}


int PCBNEW_CONTROL::ZoomInOut( const TOOL_EVENT& aEvent )
{
    KIGFX::VIEW* view = m_frame->GetGalCanvas()->GetView();
    double zoomScale = 1.0;

    if( aEvent.IsAction( &COMMON_ACTIONS::zoomIn ) )
        zoomScale = 1.3;
    else if( aEvent.IsAction( &COMMON_ACTIONS::zoomOut ) )
        zoomScale = 0.7;

    view->SetScale( view->GetScale() * zoomScale, getViewControls()->GetCursorPosition() );
    setTransitions();

    return 0;
}


int PCBNEW_CONTROL::ZoomInOutCenter( const TOOL_EVENT& aEvent )
{
    KIGFX::VIEW* view = m_frame->GetGalCanvas()->GetView();
    double zoomScale = 1.0;

    if( aEvent.IsAction( &COMMON_ACTIONS::zoomInCenter ) )
        zoomScale = 1.3;
    else if( aEvent.IsAction( &COMMON_ACTIONS::zoomOutCenter ) )
        zoomScale = 0.7;

    view->SetScale( view->GetScale() * zoomScale );
    setTransitions();

    return 0;
}


int PCBNEW_CONTROL::ZoomCenter( const TOOL_EVENT& aEvent )
{
    KIGFX::VIEW* view = m_frame->GetGalCanvas()->GetView();
    view->SetCenter( getViewControls()->GetCursorPosition() );
    setTransitions();

    return 0;
}


int PCBNEW_CONTROL::ZoomFitScreen( const TOOL_EVENT& aEvent )
{
    KIGFX::VIEW* view = m_frame->GetGalCanvas()->GetView();
    KIGFX::GAL* gal = m_frame->GetGalCanvas()->GetGAL();
    BOARD* board = getModel<BOARD>();
    board->ComputeBoundingBox();
    BOX2I boardBBox = board->ViewBBox();

    if( boardBBox.GetSize().x == 0 || boardBBox.GetSize().y == 0 )
    {
        // Empty view
        view->SetScale( 100000.0 );
        view->SetCenter( VECTOR2D( 0, 0 ) );
    }
    else
    {
        // Autozoom to board
        VECTOR2I screenSize = gal->GetScreenPixelSize();

        double iuPerX = screenSize.x ? boardBBox.GetWidth() / screenSize.x : 1.0;
        double iuPerY = screenSize.y ? boardBBox.GetHeight() / screenSize.y : 1.0;

        double bestZoom = std::max( iuPerX, iuPerY );
        double zoomFactor = gal->GetWorldScale() / gal->GetZoomFactor();
        double zoom = 1.0 / ( zoomFactor * bestZoom );

        view->SetScale( zoom );
        view->SetCenter( boardBBox.Centre() );
    }

    setTransitions();

    return 0;
}


int PCBNEW_CONTROL::TrackDisplayMode( const TOOL_EVENT& aEvent )
{
    KIGFX::PCB_PAINTER* painter =
            static_cast<KIGFX::PCB_PAINTER*>( m_frame->GetGalCanvas()->GetView()->GetPainter() );
    KIGFX::PCB_RENDER_SETTINGS* settings =
            static_cast<KIGFX::PCB_RENDER_SETTINGS*>( painter->GetSettings() );

    // Apply new display options to the GAL canvas
    DISPLAY_OPTIONS* displ_opts = (DISPLAY_OPTIONS*)m_frame->GetDisplayOptions();
    displ_opts->m_DisplayPcbTrackFill = !displ_opts->m_DisplayPcbTrackFill;
    settings->LoadDisplayOptions( displ_opts );

    for( TRACK* track = getModel<BOARD>()->m_Track; track; track = track->Next() )
    {
        if( track->Type() == PCB_TRACE_T )
            track->ViewUpdate( KIGFX::VIEW_ITEM::GEOMETRY );
    }

    m_frame->GetGalCanvas()->Refresh();
    setTransitions();

    return 0;
}


int PCBNEW_CONTROL::PadDisplayMode( const TOOL_EVENT& aEvent )
{
    KIGFX::PCB_PAINTER* painter =
            static_cast<KIGFX::PCB_PAINTER*>( m_frame->GetGalCanvas()->GetView()->GetPainter() );
    KIGFX::PCB_RENDER_SETTINGS* settings =
            static_cast<KIGFX::PCB_RENDER_SETTINGS*>( painter->GetSettings() );
    DISPLAY_OPTIONS* displ_opts = (DISPLAY_OPTIONS*)m_frame->GetDisplayOptions();

    // Apply new display options to the GAL canvas
    displ_opts->m_DisplayPadFill = !displ_opts->m_DisplayPadFill;
    settings->LoadDisplayOptions( displ_opts );

    for( MODULE* module = getModel<BOARD>()->m_Modules; module; module = module->Next() )
    {
        for( D_PAD* pad = module->Pads(); pad; pad = pad->Next() )
            pad->ViewUpdate( KIGFX::VIEW_ITEM::GEOMETRY );
    }

    m_frame->GetGalCanvas()->Refresh();
    setTransitions();

    return 0;
}


int PCBNEW_CONTROL::ViaDisplayMode( const TOOL_EVENT& aEvent )
{
    KIGFX::PCB_PAINTER* painter =
            static_cast<KIGFX::PCB_PAINTER*>( m_frame->GetGalCanvas()->GetView()->GetPainter() );
    KIGFX::PCB_RENDER_SETTINGS* settings =
            static_cast<KIGFX::PCB_RENDER_SETTINGS*>( painter->GetSettings() );
    DISPLAY_OPTIONS* displ_opts = (DISPLAY_OPTIONS*)m_frame->GetDisplayOptions();

    // Apply new display options to the GAL canvas
    displ_opts->m_DisplayViaFill = !displ_opts->m_DisplayViaFill;
    settings->LoadDisplayOptions( displ_opts );

    for( TRACK* track = getModel<BOARD>()->m_Track; track; track = track->Next() )
    {
        if( track->Type() == PCB_VIA_T )
            track->ViewUpdate( KIGFX::VIEW_ITEM::GEOMETRY );
    }

    m_frame->GetGalCanvas()->Refresh();
    setTransitions();

    return 0;
}


int PCBNEW_CONTROL::ZoneDisplayMode( const TOOL_EVENT& aEvent )
{
    KIGFX::PCB_PAINTER* painter =
            static_cast<KIGFX::PCB_PAINTER*>( m_frame->GetGalCanvas()->GetView()->GetPainter() );
    KIGFX::PCB_RENDER_SETTINGS* settings =
            static_cast<KIGFX::PCB_RENDER_SETTINGS*>( painter->GetSettings() );
    DISPLAY_OPTIONS* displ_opts = (DISPLAY_OPTIONS*)m_frame->GetDisplayOptions();

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

    settings->LoadDisplayOptions( displ_opts );

    BOARD* board = getModel<BOARD>();
    for( int i = 0; i < board->GetAreaCount(); ++i )
        board->GetArea( i )->ViewUpdate( KIGFX::VIEW_ITEM::GEOMETRY );

    m_frame->GetGalCanvas()->Refresh();
    setTransitions();

    return 0;
}


int PCBNEW_CONTROL::HighContrastMode( const TOOL_EVENT& aEvent )
{
    KIGFX::PCB_PAINTER* painter =
            static_cast<KIGFX::PCB_PAINTER*>( m_frame->GetGalCanvas()->GetView()->GetPainter() );
    KIGFX::PCB_RENDER_SETTINGS* settings =
            static_cast<KIGFX::PCB_RENDER_SETTINGS*> ( painter->GetSettings() );
    DISPLAY_OPTIONS* displ_opts = (DISPLAY_OPTIONS*)m_frame->GetDisplayOptions();

    displ_opts->m_ContrastModeDisplay = !displ_opts->m_ContrastModeDisplay;
    settings->LoadDisplayOptions( displ_opts );
    m_frame->GetGalCanvas()->SetHighContrastLayer( m_frame->GetActiveLayer() );

    setTransitions();

    return 0;
}


int PCBNEW_CONTROL::HighContrastInc( const TOOL_EVENT& aEvent )
{
    std::cout << __PRETTY_FUNCTION__ << std::endl;
    setTransitions();

    return 0;
}


int PCBNEW_CONTROL::HighContrastDec( const TOOL_EVENT& aEvent )
{
    std::cout << __PRETTY_FUNCTION__ << std::endl;
    setTransitions();

    return 0;
}


// Layer control
int PCBNEW_CONTROL::LayerSwitch( const TOOL_EVENT& aEvent )
{
    if( aEvent.IsAction( &COMMON_ACTIONS::layerTop ) )
        m_frame->SwitchLayer( NULL, F_Cu );
    else if( aEvent.IsAction( &COMMON_ACTIONS::layerInner1 ) )
        m_frame->SwitchLayer( NULL, In1_Cu );
    else if( aEvent.IsAction( &COMMON_ACTIONS::layerInner2 ) )
        m_frame->SwitchLayer( NULL, In2_Cu );
    else if( aEvent.IsAction( &COMMON_ACTIONS::layerInner3 ) )
        m_frame->SwitchLayer( NULL, In3_Cu );
    else if( aEvent.IsAction( &COMMON_ACTIONS::layerInner4 ) )
        m_frame->SwitchLayer( NULL, In4_Cu );
    else if( aEvent.IsAction( &COMMON_ACTIONS::layerInner5 ) )
        m_frame->SwitchLayer( NULL, In5_Cu );
    else if( aEvent.IsAction( &COMMON_ACTIONS::layerInner6 ) )
        m_frame->SwitchLayer( NULL, In6_Cu );
    else if( aEvent.IsAction( &COMMON_ACTIONS::layerBottom ) )
        m_frame->SwitchLayer( NULL, B_Cu );

    setTransitions();

    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 )
    {
        setTransitions();
        return 0;
    }

    int layerCount = getModel<BOARD>()->GetCopperLayerCount();

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

    assert( IsCopperLayer( layer ) );
    editFrame->SwitchLayer( NULL, ToLAYER_ID( layer ) );
    setTransitions();

    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 )
    {
        setTransitions();
        return 0;
    }

    int layerCount = getModel<BOARD>()->GetCopperLayerCount();

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

    assert( IsCopperLayer( layer ) );
    editFrame->SwitchLayer( NULL, ToLAYER_ID( layer ) );
    setTransitions();

    return 0;
}


int PCBNEW_CONTROL::LayerAlphaInc( const TOOL_EVENT& aEvent )
{
    KIGFX::PCB_PAINTER* painter =
            static_cast<KIGFX::PCB_PAINTER*>( m_frame->GetGalCanvas()->GetView()->GetPainter() );
    KIGFX::PCB_RENDER_SETTINGS* settings =
            static_cast<KIGFX::PCB_RENDER_SETTINGS*> ( painter->GetSettings() );

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

    if( currentColor.a <= 0.95 )
    {
        currentColor.a += 0.05;
        settings->SetLayerColor( currentLayer, currentColor );
        m_frame->GetGalCanvas()->GetView()->UpdateLayerColor( currentLayer );
    }

    setTransitions();

    return 0;
}


int PCBNEW_CONTROL::LayerAlphaDec( const TOOL_EVENT& aEvent )
{
    KIGFX::PCB_PAINTER* painter =
            static_cast<KIGFX::PCB_PAINTER*>( m_frame->GetGalCanvas()->GetView()->GetPainter() );
    KIGFX::PCB_RENDER_SETTINGS* settings =
            static_cast<KIGFX::PCB_RENDER_SETTINGS*> ( painter->GetSettings() );

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

    if( currentColor.a >= 0.05 )
    {
        currentColor.a -= 0.05;
        settings->SetLayerColor( currentLayer, currentColor );
        m_frame->GetGalCanvas()->GetView()->UpdateLayerColor( currentLayer );
    }

    setTransitions();

    return 0;
}


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

    return 0;
}


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

    return 0;
}


int PCBNEW_CONTROL::GridNext( const TOOL_EVENT& aEvent )
{
    m_frame->SetNextGrid();
    setTransitions();

    return 0;
}


int PCBNEW_CONTROL::GridPrev( const TOOL_EVENT& aEvent )
{
    m_frame->SetPrevGrid();
    setTransitions();

    return 0;
}


int PCBNEW_CONTROL::GridSetOrigin( const TOOL_EVENT& aEvent )
{
    Activate();
    m_frame->SetToolID( ID_PCB_PLACE_GRID_COORD_BUTT, wxCURSOR_PENCIL,
                                               _( "Adjust grid origin" ) );

    KIGFX::VIEW_CONTROLS* controls = getViewControls();
    controls->ShowCursor( true );
    controls->SetSnapping( true );
    controls->SetAutoPan( true );

    while( OPT_TOOL_EVENT evt = Wait() )
    {
        if( evt->IsClick( BUT_LEFT ) )
        {
            getView()->GetGAL()->SetGridOrigin( controls->GetCursorPosition() );
            getView()->MarkDirty();
        }

        else if( evt->IsCancel() || evt->IsActivate() )
            break;
    }

    controls->SetAutoPan( false );
    controls->SetSnapping( false );
    controls->ShowCursor( false );
    setTransitions();
    m_frame->SetToolID( ID_NO_TOOL_SELECTED, wxCURSOR_DEFAULT, wxEmptyString );

    return 0;
}


// Miscellaneous
int PCBNEW_CONTROL::ResetCoords( const TOOL_EVENT& aEvent )
{
    VECTOR2I cursorPos = getViewControls()->GetCursorPosition();

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

    return 0;
}


int PCBNEW_CONTROL::SwitchCursor( const TOOL_EVENT& aEvent )
{
    const unsigned int BIG_CURSOR = 4000;
    const unsigned int SMALL_CURSOR = 80;

    KIGFX::GAL* gal = getEditFrame<PCB_BASE_FRAME>()->GetGalCanvas()->GetGAL();

    if( gal->GetCursorSize() == BIG_CURSOR )
        gal->SetCursorSize( SMALL_CURSOR );
    else
        gal->SetCursorSize( BIG_CURSOR );

    setTransitions();

    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( g_UserUnit == INCHES )
        evt.SetId( ID_TB_OPTIONS_SELECT_UNIT_MM );
    else
        evt.SetId( ID_TB_OPTIONS_SELECT_UNIT_INCH );

    m_frame->ProcessEvent( evt );
    setTransitions();

    return 0;
}


int PCBNEW_CONTROL::ShowHelp( const TOOL_EVENT& aEvent )
{
    // TODO
    DisplayInfoMessage( m_frame, _( "Not implemented yet." ) );
    setTransitions();

    return 0;
}


int PCBNEW_CONTROL::ToBeDone( const TOOL_EVENT& aEvent )
{
    DisplayInfoMessage( m_frame, _( "Not implemented yet." ) );
    setTransitions();

    return 0;
}


void PCBNEW_CONTROL::setTransitions()
{
    // View controls
    Go( &PCBNEW_CONTROL::ZoomInOut,          COMMON_ACTIONS::zoomIn.MakeEvent() );
    Go( &PCBNEW_CONTROL::ZoomInOut,          COMMON_ACTIONS::zoomOut.MakeEvent() );
    Go( &PCBNEW_CONTROL::ZoomInOutCenter,    COMMON_ACTIONS::zoomInCenter.MakeEvent() );
    Go( &PCBNEW_CONTROL::ZoomInOutCenter,    COMMON_ACTIONS::zoomOutCenter.MakeEvent() );
    Go( &PCBNEW_CONTROL::ZoomCenter,         COMMON_ACTIONS::zoomCenter.MakeEvent() );
    Go( &PCBNEW_CONTROL::ZoomFitScreen,      COMMON_ACTIONS::zoomFitScreen.MakeEvent() );

    // Display modes
    Go( &PCBNEW_CONTROL::TrackDisplayMode,   COMMON_ACTIONS::trackDisplayMode.MakeEvent() );
    Go( &PCBNEW_CONTROL::PadDisplayMode,     COMMON_ACTIONS::padDisplayMode.MakeEvent() );
    Go( &PCBNEW_CONTROL::ViaDisplayMode,     COMMON_ACTIONS::viaDisplayMode.MakeEvent() );
    Go( &PCBNEW_CONTROL::ZoneDisplayMode,    COMMON_ACTIONS::zoneDisplayEnable.MakeEvent() );
    Go( &PCBNEW_CONTROL::ZoneDisplayMode,    COMMON_ACTIONS::zoneDisplayDisable.MakeEvent() );
    Go( &PCBNEW_CONTROL::ZoneDisplayMode,    COMMON_ACTIONS::zoneDisplayOutlines.MakeEvent() );
    Go( &PCBNEW_CONTROL::HighContrastMode,   COMMON_ACTIONS::highContrastMode.MakeEvent() );
    Go( &PCBNEW_CONTROL::HighContrastInc,    COMMON_ACTIONS::highContrastInc.MakeEvent() );
    Go( &PCBNEW_CONTROL::HighContrastDec,    COMMON_ACTIONS::highContrastDec.MakeEvent() );

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

    // Grid control
    Go( &PCBNEW_CONTROL::GridFast1,          COMMON_ACTIONS::gridFast1.MakeEvent() );
    Go( &PCBNEW_CONTROL::GridFast2,          COMMON_ACTIONS::gridFast2.MakeEvent() );
    Go( &PCBNEW_CONTROL::GridNext,           COMMON_ACTIONS::gridNext.MakeEvent() );
    Go( &PCBNEW_CONTROL::GridPrev,           COMMON_ACTIONS::gridPrev.MakeEvent() );
    Go( &PCBNEW_CONTROL::GridSetOrigin,      COMMON_ACTIONS::gridSetOrigin.MakeEvent() );

    // Miscellaneous
    Go( &PCBNEW_CONTROL::ResetCoords,        COMMON_ACTIONS::resetCoords.MakeEvent() );
    Go( &PCBNEW_CONTROL::SwitchCursor,       COMMON_ACTIONS::switchCursor.MakeEvent() );
    Go( &PCBNEW_CONTROL::SwitchUnits,        COMMON_ACTIONS::switchUnits.MakeEvent() );
    Go( &PCBNEW_CONTROL::ShowHelp,           COMMON_ACTIONS::showHelp.MakeEvent() );
    Go( &PCBNEW_CONTROL::ToBeDone,           COMMON_ACTIONS::toBeDone.MakeEvent() );
}