tool_dispatcher.h

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2013 CERN
 * Copyright (C) 2020 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * @author Tomasz Wlostowski <tomasz.wlostowski@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
 */

#ifndef __TOOL_DISPATCHER_H
#define __TOOL_DISPATCHER_H

#include <vector>
#include <wx/event.h>
#include <tool/tool_event.h>   // Needed for MD_ constants

class TOOL_MANAGER;
class PCB_BASE_FRAME;
class ACTIONS;

namespace KIGFX
{
class VIEW;
}

class TOOL_DISPATCHER : public wxEvtHandler
{
public:
    TOOL_DISPATCHER( TOOL_MANAGER* aToolMgr );

    virtual ~TOOL_DISPATCHER();

    virtual void ResetState();

    virtual void DispatchWxEvent( wxEvent& aEvent );

    OPT<TOOL_EVENT> GetToolEvent( wxKeyEvent* aKeyEvent, bool* aSpecialKeyFlag );

private:
    static const int MouseButtonCount = 3;

    static const int DragTimeThreshold = 300;

    static const int DragDistanceThreshold = 8;

    bool handleMouseButton( wxEvent& aEvent, int aIndex, bool aMotion );

    static int decodeModifiers( const wxKeyboardState* aState )
    {
        int mods = 0;

        if( aState->ControlDown() )
            mods |= MD_CTRL;

        if( aState->AltDown() )
            mods |= MD_ALT;

        if( aState->ShiftDown() )
            mods |= MD_SHIFT;

        return mods;
    }

    struct BUTTON_STATE;

    VECTOR2D m_lastMousePos;

    std::vector<BUTTON_STATE*> m_buttons;

    KIGFX::VIEW* getView();

    TOOL_MANAGER* m_toolMgr;
};

#endif