kicad/pcbnew/class_pcb_text.h

/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2004 Jean-Pierre Charras, jaen-pierre.charras@gipsa-lab.inpg.com
 * Copyright (C) 1992-2011 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
 */

/**
 * @file class_pcb_text.h
 * @brief TEXTE_PCB class definition.
 */

#ifndef CLASS_PCB_TEXT_H
#define CLASS_PCB_TEXT_H

#include <mutex>
#include <eda_text.h>
#include <class_board_item.h>
#include <PolyLine.h>


class LINE_READER;
class EDA_DRAW_PANEL;
class MSG_PANEL_ITEM;


// A mutex which is unique to each instance it appears in (ie: a new std::mutex is allocated
// on copy or assignment).
class UNIQUE_MUTEX : public std::mutex
{
public:
    UNIQUE_MUTEX() : std::mutex() {}
    UNIQUE_MUTEX( const UNIQUE_MUTEX& ) : std::mutex() {}
    UNIQUE_MUTEX& operator= (const UNIQUE_MUTEX& ) { return *this; }
};


class TEXTE_PCB : public BOARD_ITEM, public EDA_TEXT
{
public:
    TEXTE_PCB( BOARD_ITEM* parent );

    // Do not create a copy constructor & operator=.
    // The ones generated by the compiler are adequate.

    ~TEXTE_PCB();

    static inline bool ClassOf( const EDA_ITEM* aItem )
    {
        return aItem && PCB_TEXT_T == aItem->Type();
    }

    virtual const wxPoint GetPosition() const override
    {
        return EDA_TEXT::GetTextPos();
    }

    virtual void SetPosition( const wxPoint& aPos ) override
    {
        EDA_TEXT::SetTextPos( aPos );
    }

    void Move( const wxPoint& aMoveVector ) override
    {
        EDA_TEXT::Offset( aMoveVector );
    }

    void SetTextAngle( double aAngle );

    void Rotate( const wxPoint& aRotCentre, double aAngle ) override;

    void Flip( const wxPoint& aCentre ) override;

    void Draw( EDA_DRAW_PANEL* panel, wxDC* DC,
               GR_DRAWMODE aDrawMode, const wxPoint& offset = ZeroOffset ) override;

    void GetMsgPanelInfo(  EDA_UNITS_T aUnits, std::vector< MSG_PANEL_ITEM >& aList ) override;

    virtual bool HitTest( const wxPoint& aPosition ) const override
    {
        return TextHitTest( aPosition );
    }

    /** @copydoc BOARD_ITEM::HitTest(const EDA_RECT& aRect,
     *                               bool aContained = true, int aAccuracy ) const
     */
    virtual bool HitTest( const EDA_RECT& aRect, bool aContained = true, int aAccuracy = 0 ) const override
    {
        return TextHitTest( aRect, aContained, aAccuracy );
    }

    wxString GetClass() const override
    {
        return wxT( "PTEXT" );
    }

    /**
     * Function TransformBoundingBoxWithClearanceToPolygon
     * Convert the text bounding box to a rectangular polygon
     * depending on the text orientation, the bounding box
     * is not always horizontal or vertical
     * Used in filling zones calculations
     * Circles and arcs are approximated by segments
     * @param aCornerBuffer = a buffer to store the polygon
     * @param aClearanceValue = the clearance around the text bounding box
     * to the real clearance value (usually near from 1.0)
     */
    void TransformBoundingBoxWithClearanceToPolygon(
                    SHAPE_POLY_SET& aCornerBuffer,
                    int                    aClearanceValue ) const;

    /**
     * Function TransformShapeWithClearanceToPolygonSet
     * Convert the text shape to a set of polygons (one by segment)
     * Used in 3D viewer
     * Circles and arcs are approximated by segments
     * @param aCornerBuffer = a buffer to store the polygon
     * @param aClearanceValue = the clearance around the text
     * @param aCircleToSegmentsCount = the number of segments to approximate a circle
     * @param aCorrectionFactor = the correction to apply to circles radius to keep
     * clearance when the circle is approximated by segment bigger or equal
     * to the real clearance value (usually near from 1.0)
     */
    void TransformShapeWithClearanceToPolygonSet( SHAPE_POLY_SET& aCornerBuffer,
                                               int                aClearanceValue,
                                               int                aCircleToSegmentsCount,
                                               double             aCorrectionFactor ) const;

    wxString GetSelectMenuText( EDA_UNITS_T aUnits ) const override;

    BITMAP_DEF GetMenuImage() const override;

    // Virtual function
    const EDA_RECT GetBoundingBox() const override;

    EDA_ITEM* Clone() const override;

    virtual void SwapData( BOARD_ITEM* aImage ) override;

    mutable UNIQUE_MUTEX m_mutex;

#if defined(DEBUG)
    virtual void Show( int nestLevel, std::ostream& os ) const override { ShowDummy( os ); }
#endif
};

#endif  // #define CLASS_PCB_TEXT_H