eda_text.h

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2013 Jean-Pierre Charras, jpe.charras at wanadoo.fr
 * Copyright (C) 2004-2020 KiCad Developers, see change_log.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 EDA_TEXT_H_
#define EDA_TEXT_H_

#include <memory>
#include <vector>

#include <outline_mode.h>
#include <eda_rect.h>

class OUTPUTFORMATTER;
class SHAPE_COMPOUND;
class SHAPE_POLY_SET;
class wxFindReplaceData;

namespace KIGFX
{
    class RENDER_SETTINGS;
    class COLOR4D;
}

using KIGFX::RENDER_SETTINGS;
using KIGFX::COLOR4D;

#define TEXT_ANGLE_HORIZ 0
#define TEXT_ANGLE_VERT 900

// part of the kicad_plugin.h family of defines.
// See kicad_plugin.h for the choice of the value
// When set when calling  EDA_TEXT::Format, disable writing the "hide" keyword in save file
#define CTL_OMIT_HIDE               (1 << 6)


// Graphic Text justify:
// Values -1,0,1 are used in computations, do not change them
enum EDA_TEXT_HJUSTIFY_T {
    GR_TEXT_HJUSTIFY_LEFT   = -1,
    GR_TEXT_HJUSTIFY_CENTER = 0,
    GR_TEXT_HJUSTIFY_RIGHT  = 1
};


enum EDA_TEXT_VJUSTIFY_T {
    GR_TEXT_VJUSTIFY_TOP    = -1,
    GR_TEXT_VJUSTIFY_CENTER = 0,
    GR_TEXT_VJUSTIFY_BOTTOM = 1
};


#define DEFAULT_SIZE_TEXT   50     // default text height (in mils, i.e. 1/1000")
#define DIM_ANCRE_TEXTE     2      // Anchor size for text


struct TEXT_EFFECTS
{
    TEXT_EFFECTS( int aSetOfBits = 0 ) :
        bits( aSetOfBits ),
        hjustify( GR_TEXT_HJUSTIFY_CENTER ),
        vjustify( GR_TEXT_VJUSTIFY_CENTER ),
        penwidth( 0 ),
        angle( 0.0 )
    {}

    int         bits;           
    signed char hjustify;       
    signed char vjustify;       
    wxSize      size;
    int         penwidth;
    double      angle;          
    wxPoint     pos;

    void Bit( int aBit, bool aValue )   { aValue ? bits |= (1<<aBit) : bits &= ~(1<<aBit); }
    bool Bit( int aBit ) const          { return bits & (1<<aBit); }
};


class EDA_TEXT
{
public:
    EDA_TEXT( const wxString& text = wxEmptyString );

    EDA_TEXT( const EDA_TEXT& aText );

    virtual ~EDA_TEXT();

    virtual const wxString& GetText() const { return m_text; }

    virtual wxString GetShownText( int aDepth = 0 ) const { return m_shown_text; }

    wxString GetShownText( bool* processTextVars ) const
    {
        *processTextVars = m_shown_text_has_text_var_refs;
        return m_shown_text;
    }

    wxString ShortenedShownText() const;

    virtual void SetText( const wxString& aText );

    void SetTextThickness( int aWidth ) { m_e.penwidth = aWidth; };
    int GetTextThickness() const { return m_e.penwidth; };

    int GetEffectiveTextPenWidth( int aDefaultWidth = 0 ) const;

    virtual void SetTextAngle( double aAngle )
    {
        // Higher level classes may be more restrictive than this by overloading
        // SetTextAngle() or merely calling EDA_TEXT::SetTextAngle() after clamping
        // aAngle before calling this lowest inline accessor.
        m_e.angle = aAngle;
    }
    double GetTextAngle() const                 { return m_e.angle; }

    double GetTextAngleDegrees() const          { return GetTextAngle() / 10.0; }
    double GetTextAngleRadians() const          { return GetTextAngle() * M_PI/1800; }

    void SetItalic( bool isItalic )             { m_e.Bit( TE_ITALIC, isItalic ); }
    bool IsItalic() const                       { return m_e.Bit( TE_ITALIC ); }

    void SetBold( bool aBold )                  { m_e.Bit( TE_BOLD, aBold); }
    bool IsBold() const                         { return m_e.Bit( TE_BOLD ); }

    void SetVisible( bool aVisible )            { m_e.Bit( TE_VISIBLE, aVisible ); }
    bool IsVisible() const                      { return m_e.Bit( TE_VISIBLE ); }

    void SetMirrored( bool isMirrored )         { m_e.Bit( TE_MIRROR, isMirrored ); }
    bool IsMirrored() const                     { return m_e.Bit( TE_MIRROR ); }

    void SetMultilineAllowed( bool aAllow )     { m_e.Bit( TE_MULTILINE, aAllow ); }
    bool IsMultilineAllowed() const             { return m_e.Bit( TE_MULTILINE ); }

    EDA_TEXT_HJUSTIFY_T GetHorizJustify() const { return EDA_TEXT_HJUSTIFY_T( m_e.hjustify ); };
    EDA_TEXT_VJUSTIFY_T GetVertJustify() const  { return EDA_TEXT_VJUSTIFY_T( m_e.vjustify ); };

    void SetHorizJustify( EDA_TEXT_HJUSTIFY_T aType )   { m_e.hjustify = aType; };
    void SetVertJustify( EDA_TEXT_VJUSTIFY_T aType )    { m_e.vjustify = aType; };

    void SetEffects( const EDA_TEXT& aSrc );

    void SwapEffects( EDA_TEXT& aTradingPartner );

    void SwapText( EDA_TEXT& aTradingPartner );

    void CopyText( const EDA_TEXT& aSrc );

    bool Replace( const wxFindReplaceData& aSearchData );

    bool IsDefaultFormatting() const;

    void SetTextSize( const wxSize& aNewSize )  { m_e.size = aNewSize; }
    const wxSize& GetTextSize() const           { return m_e.size; }

    void SetTextWidth( int aWidth )             { m_e.size.x = aWidth; }
    int GetTextWidth() const                    { return m_e.size.x; }

    void SetTextHeight( int aHeight )           { m_e.size.y = aHeight; }
    int GetTextHeight() const                   { return m_e.size.y; }

    void SetTextPos( const wxPoint& aPoint )    { m_e.pos = aPoint; }
    const wxPoint& GetTextPos() const           { return m_e.pos; }

    void SetTextX( int aX )                     { m_e.pos.x = aX; }
    void SetTextY( int aY )                     { m_e.pos.y = aY; }

    void Offset( const wxPoint& aOffset )       { m_e.pos += aOffset; }

    void Empty()                                { m_text.Empty(); }

    static EDA_TEXT_HJUSTIFY_T MapHorizJustify( int aHorizJustify );

    static EDA_TEXT_VJUSTIFY_T MapVertJustify( int aVertJustify );

    void Print( const RENDER_SETTINGS* aSettings, const wxPoint& aOffset,
                COLOR4D aColor, OUTLINE_MODE aDisplay_mode = FILLED );

    std::vector<wxPoint> TransformToSegmentList() const;

    void TransformBoundingBoxWithClearanceToPolygon( SHAPE_POLY_SET* aCornerBuffer,
                                                     int aClearanceValue ) const;

    std::shared_ptr<SHAPE_COMPOUND> GetEffectiveTextShape() const;

    virtual bool TextHitTest( const wxPoint& aPoint, int aAccuracy = 0 ) const;

    virtual bool TextHitTest( const EDA_RECT& aRect, bool aContains, int aAccuracy = 0 ) const;

    int LenSize( const wxString& aLine, int aThickness ) const;

    EDA_RECT GetTextBox( int aLine = -1, bool aInvertY = false ) const;

    int GetInterline() const;

    wxString GetTextStyleName() const;

    void GetLinePositions( std::vector<wxPoint>& aPositions, int aLineCount ) const;

    virtual void Format( OUTPUTFORMATTER* aFormatter, int aNestLevel, int aControlBits ) const;

    virtual double GetDrawRotation() const;

private:
    void printOneLineOfText( const RENDER_SETTINGS* aSettings, const wxPoint& aOffset, COLOR4D aColor,
                             OUTLINE_MODE aFillMode, const wxString& aText, const wxPoint& aPos );

    wxString      m_text;
    wxString      m_shown_text;           // Cache of unescaped text for efficient access
    bool          m_shown_text_has_text_var_refs;

    TEXT_EFFECTS  m_e;                    // Private bitflags for text styling.  API above
                                          // provides accessor funcs.
    enum TE_FLAGS {
        TE_MIRROR,
        TE_ITALIC,
        TE_BOLD,
        TE_MULTILINE,
        TE_VISIBLE,
    };
};


#endif   //  EDA_TEXT_H_