pl_selection.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2019 CERN
 * Copyright The 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, see <https://www.gnu.org/licenses/>.
 */
 
#include <eda_item.h>
#include <tools/pl_selection.h>
 
 
EDA_ITEM* PL_SELECTION::GetTopLeftItem( bool onlyModules ) const
{
    EDA_ITEM* topLeftItem = nullptr;
    BOX2I     topLeftItemBB;
 
    // find the leftmost (smallest x coord) and highest (smallest y with the smallest x) item in the selection
    for( EDA_ITEM* item : m_items )
    {
        BOX2I currentItemBB = item->GetBoundingBox();
 
        if( topLeftItem == nullptr )
        {
            topLeftItem = item;
            topLeftItemBB = currentItemBB;
        }
        else if( currentItemBB.GetLeft() < topLeftItemBB.GetLeft() )
        {
            topLeftItem = item;
            topLeftItemBB = currentItemBB;
        }
        else if( topLeftItemBB.GetLeft() == currentItemBB.GetLeft()
                    && currentItemBB.GetTop() < topLeftItemBB.GetTop() )
        {
            topLeftItem = item;
            topLeftItemBB = currentItemBB;
        }
    }
 
    return topLeftItem;
}