kicad/include/preview_items/two_point_assistant.h

/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 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 PREVIEW_ITEMS_TWO_POINT_ASSISTANT_H
#define PREVIEW_ITEMS_TWO_POINT_ASSISTANT_H

#include <base_struct.h>
#include <preview_items/two_point_geom_manager.h>
#include <layers_id_colors_and_visibility.h>

namespace KIGFX
{
namespace PREVIEW
{

    // TODO: required until PCB_SHAPE_TYPE_T is moved into commons or a better approach is found
    enum class GEOM_SHAPE
    {
        SEGMENT = 0,
        RECT,
        ARC,
        CIRCLE,
        POLYGON,
        CURVE
    };

    /**
     * Represents an assistant draw when interactively drawing a line or circle on a canvas.
     */
    class TWO_POINT_ASSISTANT : public EDA_ITEM
    {
    public:
        TWO_POINT_ASSISTANT(
                const TWO_POINT_GEOMETRY_MANAGER& aManager, EDA_UNITS aUnits, GEOM_SHAPE aShape );

        const BOX2I ViewBBox() const override;

        void ViewGetLayers( int aLayers[], int& aCount ) const override
        {
            aLayers[0] = LAYER_SELECT_OVERLAY;  // Assitant graphics
            aLayers[1] = LAYER_GP_OVERLAY;      // Drop shadows
            aCount = 2;
        }

        /**
         * Draw the assistance (with reference to the contstruction manager
         */
        void ViewDraw( int aLayer, KIGFX::VIEW* aView ) const override final;

#if defined( DEBUG )
        void Show( int x, std::ostream& st ) const override
        {
        }
#endif

        /**
         * Get class name
         * @return  string "TWO_POINT_ASSISTANT"
         */
        wxString GetClass() const override
        {
            return "TWO_POINT_ASSISTANT";
        }

    private:
        const TWO_POINT_GEOMETRY_MANAGER& m_constructMan;
        EDA_UNITS                         m_units;
        GEOM_SHAPE                        m_shape;
    };
} // namespace PREVIEW
} // namespace KIGFX

#endif // PREVIEW_ITEMS_TWO_POINT_ASSISTANT_H