59 lines
2.2 KiB
C++
59 lines
2.2 KiB
C++
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/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2021 KiCad Developers, see CHANGELOG.TXT for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 3
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/gpl-3.0.html
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* or you may search the http://www.gnu.org website for the version 3 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <tool/selection_tool.h>
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SELECTION_TOOL::SELECTION_TOOL() :
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m_additive( false ),
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m_subtractive( false ),
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m_exclusive_or( false ),
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m_multiple( false ),
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m_skip_heuristics( false ),
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m_highlight_modifier( false ),
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m_drag_additive( false ),
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m_drag_subtractive( false )
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{
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}
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void SELECTION_TOOL::setModifiersState( bool aShiftState, bool aCtrlState, bool aAltState )
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{
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// Set the configuration of m_additive, m_subtractive, m_exclusive_or
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// from the state of modifier keys SHIFT, CTRL, ALT
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// on left click, a selection is made, depending on modifiers ALT, SHIFT, CTRL:
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// ALT key cannot be used on MSW because of a conflict with the system menu
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// for this reason, we do not use the ALT key modifier.
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// Drag is more forgiving and allows either Ctrl+drag or Shift+Drag to add to the selection
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m_subtractive = aCtrlState && aShiftState && !aAltState;
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m_additive = !aCtrlState && aShiftState && !aAltState;
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m_exclusive_or = false;
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m_highlight_modifier = aCtrlState && !aShiftState && !aAltState;
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m_drag_additive = ( aCtrlState || aShiftState ) && ! aAltState;
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m_drag_subtractive = aCtrlState && aShiftState && !aAltState;
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}
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