picker_tool.h

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2019 CERN
 * Copyright (C) 2019-2020 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
 */

#ifndef PICKER_TOOL_H
#define PICKER_TOOL_H

#include <core/optional.h>
#include <gal/cursors.h>
#include <math/vector2d.h>
#include <tool/tool_interactive.h>

class EDA_DRAW_FRAME;


class PICKER_TOOL_BASE
{
public:
 typedef std::function<bool(const VECTOR2D&)> CLICK_HANDLER;
 typedef std::function<void(const VECTOR2D&)> MOTION_HANDLER;
 typedef std::function<void(void)> CANCEL_HANDLER;
 typedef std::function<void(const int&)> FINALIZE_HANDLER;

 enum pickerEndState
 {
 WAIT_CANCEL,
 CLICK_CANCEL,
 END_ACTIVATE,
 EVT_CANCEL,
 EXCEPTION_CANCEL
 };

 PICKER_TOOL_BASE() :
 m_frame( nullptr )
 {
 reset();
 }

 virtual ~PICKER_TOOL_BASE() = default;

 inline void SetCursor( KICURSOR aCursor ) { m_cursor = aCursor; }

 inline void SetSnapping( bool aSnap ) { m_snap = aSnap; }

 inline void SetClickHandler( CLICK_HANDLER aHandler )
 {
 wxASSERT( !m_clickHandler );
 m_clickHandler = aHandler;
 }

 inline void SetMotionHandler( MOTION_HANDLER aHandler )
 {
 wxASSERT( !m_motionHandler );
 m_motionHandler = aHandler;
 }

 inline void SetCancelHandler( CANCEL_HANDLER aHandler )
 {
 wxASSERT( !m_cancelHandler );
 m_cancelHandler = aHandler;
 }

 inline void SetFinalizeHandler( FINALIZE_HANDLER aHandler )
 {
 wxASSERT( !m_finalizeHandler );
 m_finalizeHandler = aHandler;
 }

protected:
 virtual void reset();

 EDA_DRAW_FRAME* m_frame;
 KICURSOR m_cursor;
 bool m_snap;

 OPT<CLICK_HANDLER> m_clickHandler;
 OPT<MOTION_HANDLER> m_motionHandler;
 OPT<CANCEL_HANDLER> m_cancelHandler;
 OPT<FINALIZE_HANDLER> m_finalizeHandler;

 OPT<VECTOR2D> m_picked;
};


class PICKER_TOOL : public TOOL_INTERACTIVE, public PICKER_TOOL_BASE
{
public:
 PICKER_TOOL();

 PICKER_TOOL( const std::string& aName );

 virtual ~PICKER_TOOL() = default;

 bool Init() override;

 void Reset( RESET_REASON aReason ) override { }

 int Main( const TOOL_EVENT& aEvent );

protected:
 void setControls();

 void setTransitions() override;
};

#endif /* PICKER_TOOL_H */