/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2009 Jean-Pierre Charras, jaen-pierre.charras@gipsa-lab.inpg.com
 * Copyright (C) 2011 Wayne Stambaugh <stambaughw@verizon.net>
 * Copyright (C) 1992-2011 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
 */

/**
 * @file automove.cpp
 * @brief Routines for automatic displacement and rotation of modules.
 */

#include <algorithm>

#include "fctsys.h"
#include "class_drawpanel.h"
#include "confirm.h"
#include "kicad_string.h"
#include "pcbnew.h"
#include "wxPcbStruct.h"
#include "kicad_device_context.h"

#include "autorout.h"
#include "cell.h"
#include "pcbnew_id.h"
#include "class_board.h"
#include "class_module.h"

extern BOARD_ITEM* DuplicateStruct( BOARD_ITEM* aItem );

typedef enum {
    FIXE_MODULE,
    FREE_MODULE,
    FIXE_ALL_MODULES,
    FREE_ALL_MODULES
} SelectFixeFct;


static bool sortModulesbySize( MODULE* ref, MODULE* compare );


wxString ModulesMaskSelection = wxT( "*" );


/* Called on events (popup menus) relative to automove and autoplace footprints
 */
void PCB_EDIT_FRAME::AutoPlace( wxCommandEvent& event )
{
    int        id = event.GetId();

    if( m_mainToolBar == NULL )
        return;

    INSTALL_UNBUFFERED_DC( dc, m_canvas );

    switch( id )
    {
    case ID_POPUP_PCB_AUTOROUTE_SELECT_LAYERS:
        return;

    case ID_POPUP_PCB_AUTOPLACE_FIXE_MODULE:
        LockModule( (MODULE*) GetScreen()->GetCurItem(), true );
        return;

    case ID_POPUP_PCB_AUTOPLACE_FREE_MODULE:
        LockModule( (MODULE*) GetScreen()->GetCurItem(), false );
        return;

    case ID_POPUP_PCB_AUTOPLACE_FREE_ALL_MODULES:
        LockModule( NULL, false );
        return;

    case ID_POPUP_PCB_AUTOPLACE_FIXE_ALL_MODULES:
        LockModule( NULL, true );
        return;

    case ID_POPUP_CANCEL_CURRENT_COMMAND:
        if( m_canvas->IsMouseCaptured() )
        {
            m_canvas->CallEndMouseCapture( &dc );
        }

        break;

    default:   // Abort a current command (if any)
        m_canvas->EndMouseCapture( ID_NO_TOOL_SELECTED, m_canvas->GetDefaultCursor() );
        break;
    }

    /* Erase ratsnest if needed */
    if( GetBoard()->IsElementVisible(RATSNEST_VISIBLE) )
        DrawGeneralRatsnest( &dc );

    GetBoard()->m_Status_Pcb |= DO_NOT_SHOW_GENERAL_RASTNEST;

    switch( id )
    {
    case ID_POPUP_PCB_AUTOPLACE_CURRENT_MODULE:
        AutoPlaceModule( (MODULE*) GetScreen()->GetCurItem(), PLACE_1_MODULE, &dc );
        break;

    case ID_POPUP_PCB_AUTOPLACE_ALL_MODULES:
        AutoPlaceModule( NULL, PLACE_ALL, &dc );
        break;

    case ID_POPUP_PCB_AUTOPLACE_NEW_MODULES:
        AutoPlaceModule( NULL, PLACE_OUT_OF_BOARD, &dc );
        break;

    case ID_POPUP_PCB_AUTOPLACE_NEXT_MODULE:
        AutoPlaceModule( NULL, PLACE_INCREMENTAL, &dc );
        break;

    case ID_POPUP_PCB_AUTOMOVE_ALL_MODULES:
        AutoMoveModulesOnPcb( false );
        break;

    case ID_POPUP_PCB_AUTOMOVE_NEW_MODULES:
        AutoMoveModulesOnPcb( true );
        break;

    case ID_POPUP_PCB_AUTOROUTE_ALL_MODULES:
        Autoroute( &dc, ROUTE_ALL );
        break;

    case ID_POPUP_PCB_AUTOROUTE_MODULE:
        Autoroute( &dc, ROUTE_MODULE );
        break;

    case ID_POPUP_PCB_AUTOROUTE_PAD:
        Autoroute( &dc, ROUTE_PAD );
        break;

    case ID_POPUP_PCB_AUTOROUTE_NET:
        Autoroute( &dc, ROUTE_NET );
        break;

    case ID_POPUP_PCB_AUTOROUTE_RESET_UNROUTED:
        Reset_Noroutable( &dc );
        break;

    default:
        wxMessageBox( wxT( "AutoPlace command error" ) );
        break;
    }

    GetBoard()->m_Status_Pcb &= ~DO_NOT_SHOW_GENERAL_RASTNEST;
    Compile_Ratsnest( &dc, true );
}


/* Function to move components in a rectangular area format 4 / 3,
 * starting from the mouse cursor
 * The components with the FIXED status set are not moved
 */
void PCB_EDIT_FRAME::AutoMoveModulesOnPcb( bool PlaceModulesHorsPcb )
{
    std::vector <MODULE*> moduleList;
    wxPoint  start, current;
    int      Ymax_size, Xsize_allowed;
    int      pas_grille = (int) GetScreen()->GetGridSize().x;
    double   surface;

    // Undo: init list
    PICKED_ITEMS_LIST  newList;
    newList.m_Status = UR_CHANGED;
    ITEM_PICKER        picker( NULL, UR_CHANGED );

    if( GetBoard()->m_Modules == NULL )
    {
        DisplayError( this, _( "No modules found!" ) );
        return;
    }

    /* Confirmation */
    if( !IsOK( this, _( "Move modules?" ) ) )
        return;

    EDA_RECT bbbox = GetBoard()->ComputeBoundingBox( true );

    bool     edgesExist = ( bbbox.GetWidth() || bbbox.GetHeight() );

    // no edges exist
    if( PlaceModulesHorsPcb && !edgesExist )
    {
        DisplayError( this,
                      _( "Could not automatically place modules. No board outlines detected." ) );
        return;
    }

    // Build sorted footprints list (sort by decreasing size )
    MODULE* Module = GetBoard()->m_Modules;

    for( ; Module != NULL; Module = Module->Next() )
    {
        Module->CalculateBoundingBox();
        moduleList.push_back(Module);
    }

    sort( moduleList.begin(), moduleList.end(), sortModulesbySize );

    /* to move modules outside the board, the cursor is placed below
     * the current board, to avoid placing components in board area.
     */
    if( PlaceModulesHorsPcb && edgesExist )
    {
        if( GetScreen()->GetCrossHairPosition().y < (bbbox.GetBottom() + 2000) )
        {
            wxPoint pos = GetScreen()->GetCrossHairPosition();
            pos.y = bbbox.GetBottom() + 2000;
            GetScreen()->SetCrossHairPosition( pos );
        }
    }

    /* calculate the area needed by footprints */
    surface = 0.0;

    for( unsigned ii = 0; ii < moduleList.size(); ii++ )
    {
        Module = moduleList[ii];

        if( PlaceModulesHorsPcb && edgesExist )
        {
            if( bbbox.Contains( Module->m_Pos ) )
                continue;
        }

        surface += Module->m_Surface;
    }

    Xsize_allowed = (int) ( sqrt( surface ) * 4.0 / 3.0 );

    start     = current = GetScreen()->GetCrossHairPosition();
    Ymax_size = 0;

    for( unsigned ii = 0; ii < moduleList.size(); ii++ )
    {
        Module = moduleList[ii];

        if( Module->IsLocked() )
            continue;

        if( PlaceModulesHorsPcb && edgesExist )
        {
            if( bbbox.Contains( Module->m_Pos ) )
                continue;
        }

        // Undo: add copy of old Module to undo
        picker.m_Link           = DuplicateStruct( Module );
        picker.m_PickedItemType = Module->Type();

        if( current.x > (Xsize_allowed + start.x) )
        {
            current.x  = start.x;
            current.y += Ymax_size + pas_grille;
            Ymax_size  = 0;
        }

        GetScreen()->SetCrossHairPosition( current + Module->m_Pos -
                                           Module->m_BoundaryBox.GetPosition() );

        Ymax_size = max( Ymax_size, Module->m_BoundaryBox.GetHeight() );

        PlaceModule( Module, NULL, true );

        // Undo: add new Module to undo
        picker.m_PickedItem = Module;
        newList.PushItem( picker );

        current.x += Module->m_BoundaryBox.GetWidth() + pas_grille;
    }

    // Undo: commit
    if( newList.GetCount() )
        SaveCopyInUndoList( newList, UR_CHANGED );

    m_canvas->Refresh();
}


/* Set or reset (true or false) Lock attribute of aModule or all modules if aModule == NULL
 */
void PCB_EDIT_FRAME::LockModule( MODULE* aModule, bool aLocked )
{
    if( aModule )
    {
        aModule->SetLocked( aLocked );

        aModule->DisplayInfo( this );
        OnModify();
    }
    else
    {
        aModule = GetBoard()->m_Modules;

        for( ; aModule != NULL; aModule = aModule->Next() )
        {
            if( WildCompareString( ModulesMaskSelection, aModule->m_Reference->m_Text ) )
            {
                aModule->SetLocked( aLocked );
                OnModify();
            }
        }
    }
}


static bool sortModulesbySize( MODULE* ref, MODULE* compare )
{
    return compare->m_Surface < ref->m_Surface;
}