kicad/common/base_screen.cpp

/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2012 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr
 * Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
 * Copyright (C) 2012 Wayne Stambaugh <stambaughw@gmail.com>
 * Copyright (C) 1992-2020 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

#include <base_screen.h>
#include <base_struct.h>
#include <fctsys.h>
#include <trace_helpers.h>


wxString BASE_SCREEN::m_PageLayoutDescrFileName;   // the name of the page layout descr file.


BASE_SCREEN::BASE_SCREEN( EDA_ITEM* aParent, KICAD_T aType ) :
    EDA_ITEM( aParent, aType )
{
    m_UndoRedoCountMax = DEFAULT_MAX_UNDO_ITEMS;
    m_Initialized      = false;
    m_ScreenNumber     = 1;
    m_NumberOfScreens  = 1;      // Hierarchy: Root: ScreenNumber = 1
    m_Center           = true;

    m_FlagModified     = false;     // Set when any change is made on board.
    m_FlagSave         = false;     // Used in auto save set when an auto save is required.
}


void BASE_SCREEN::InitDataPoints( const wxSize& aPageSizeIU )
{
    if( m_Center )
    {
        m_crossHairPosition.x = 0;
        m_crossHairPosition.y = 0;

        m_DrawOrg.x = -aPageSizeIU.x / 2;
        m_DrawOrg.y = -aPageSizeIU.y / 2;
    }
    else
    {
        m_crossHairPosition.x = aPageSizeIU.x / 2;
        m_crossHairPosition.y = aPageSizeIU.y / 2;

        m_DrawOrg.x = 0;
        m_DrawOrg.y = 0;
    }

    m_LocalOrigin = { 0, 0 };
}


void BASE_SCREEN::ClearUndoRedoList()
{
    ClearUndoORRedoList( m_UndoList );
    ClearUndoORRedoList( m_RedoList );
}


void BASE_SCREEN::PushCommandToUndoList( PICKED_ITEMS_LIST* aNewitem )
{
    m_UndoList.PushCommand( aNewitem );

    // Delete the extra items, if count max reached
    if( m_UndoRedoCountMax > 0 )
    {
        int extraitems = GetUndoCommandCount() - m_UndoRedoCountMax;

        if( extraitems > 0 )
            ClearUndoORRedoList( m_UndoList, extraitems );
    }
}


void BASE_SCREEN::PushCommandToRedoList( PICKED_ITEMS_LIST* aNewitem )
{
    m_RedoList.PushCommand( aNewitem );

    // Delete the extra items, if count max reached
    if( m_UndoRedoCountMax > 0 )
    {
        int extraitems = GetRedoCommandCount() - m_UndoRedoCountMax;

        if( extraitems > 0 )
            ClearUndoORRedoList( m_RedoList, extraitems );
    }
}


PICKED_ITEMS_LIST* BASE_SCREEN::PopCommandFromUndoList( )
{
    return m_UndoList.PopCommand();
}


PICKED_ITEMS_LIST* BASE_SCREEN::PopCommandFromRedoList( )
{
    return m_RedoList.PopCommand();
}


#if defined(DEBUG)

void BASE_SCREEN::Show( int nestLevel, std::ostream& os ) const
{
    // for now, make it look like XML, expand on this later.
    NestedSpace( nestLevel, os ) << '<' << GetClass().Lower().mb_str() << ">\n";

    NestedSpace( nestLevel, os ) << "</" << GetClass().Lower().mb_str() << ">\n";
}

#endif