units_provider.h

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2022-2023 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  UNITS_PROVIDER_H
#define  UNITS_PROVIDER_H
 
#include <eda_units.h>
#include <origin_transforms.h>
#include <core/minoptmax.h>
#include <optional>
#include <utility>
 
 
class UNITS_PROVIDER
{
public:
    UNITS_PROVIDER( const EDA_IU_SCALE& aIuScale, EDA_UNITS aUnits ) :
            m_iuScale( aIuScale ),
            m_userUnits( aUnits )
    {}
 
    virtual ~UNITS_PROVIDER()
    {}
 
    EDA_UNITS GetUserUnits() const { return m_userUnits; }
    void SetUserUnits( EDA_UNITS aUnits ) { m_userUnits = aUnits; }
 
    virtual void GetUnitPair( EDA_UNITS& aPrimaryUnit, EDA_UNITS& aSecondaryUnits )
    {
        aPrimaryUnit    = GetUserUnits();
        aSecondaryUnits = EDA_UNITS::MILS;
 
        if( EDA_UNIT_UTILS::IsImperialUnit( aPrimaryUnit ) )
            aSecondaryUnits = EDA_UNITS::MILLIMETRES;
        else
            aSecondaryUnits = EDA_UNITS::MILS;
    }
 
    const EDA_IU_SCALE& GetIuScale() const { return m_iuScale; }
    // No SetIuScale(); scale is invariant
 
    virtual ORIGIN_TRANSFORMS& GetOriginTransforms()
    {
        static ORIGIN_TRANSFORMS identityTransform;
 
        return identityTransform;
    }
 
    wxString StringFromValue( double aValue, bool aAddUnitLabel = false,
                              EDA_DATA_TYPE aType = EDA_DATA_TYPE::DISTANCE ) const
    {
        return EDA_UNIT_UTILS::UI::StringFromValue( GetIuScale(), GetUserUnits(), aValue,
                                                    aAddUnitLabel, aType );
    }
 
    wxString StringFromOptionalValue( std::optional<int> aValue, bool aAddUnitLabel = false,
                                      EDA_DATA_TYPE aType = EDA_DATA_TYPE::DISTANCE ) const
    {
        if( !aValue )
            return NullUiString;
        else
            return EDA_UNIT_UTILS::UI::StringFromValue( GetIuScale(), GetUserUnits(),
                                                        aValue.value(), aAddUnitLabel, aType );
    }
 
    wxString StringFromValue( const EDA_ANGLE& aValue, bool aAddUnitLabel = false ) const
    {
        return EDA_UNIT_UTILS::UI::StringFromValue( unityScale, EDA_UNITS::DEGREES,
                                                    aValue.AsDegrees(), aAddUnitLabel,
                                                    EDA_DATA_TYPE::DISTANCE );
    }
 
    wxString MessageTextFromValue( double aValue, bool aAddUnitLabel = true,
                                   EDA_DATA_TYPE aType = EDA_DATA_TYPE::DISTANCE ) const
    {
        return EDA_UNIT_UTILS::UI::MessageTextFromValue( GetIuScale(), GetUserUnits(), aValue,
                                                         aAddUnitLabel, aType );
    }
 
    wxString MessageTextFromValue( const EDA_ANGLE& aValue, bool aAddUnitLabel = true ) const
    {
        return EDA_UNIT_UTILS::UI::MessageTextFromValue( unityScale, EDA_UNITS::DEGREES,
                                                         aValue.AsDegrees(), aAddUnitLabel,
                                                         EDA_DATA_TYPE::DISTANCE );
    }
 
    wxString MessageTextFromMinOptMax( const MINOPTMAX<int>& aValue ) const
    {
        return EDA_UNIT_UTILS::UI::MessageTextFromMinOptMax( GetIuScale(), GetUserUnits(), aValue );
    };
 
    int ValueFromString( const wxString& aTextValue,
                         EDA_DATA_TYPE   aType = EDA_DATA_TYPE::DISTANCE ) const
    {
        double value = EDA_UNIT_UTILS::UI::DoubleValueFromString( GetIuScale(), GetUserUnits(),
                                                                  aTextValue, aType );
 
        return KiROUND<double, int>( value );
    }
 
    std::optional<int>
    OptionalValueFromString( const wxString& aTextValue,
                             EDA_DATA_TYPE   aType = EDA_DATA_TYPE::DISTANCE ) const
    {
        // Handle null (empty) values
        if( aTextValue == NullUiString )
            return {};
 
        double value = EDA_UNIT_UTILS::UI::DoubleValueFromString( GetIuScale(), GetUserUnits(),
                                                                  aTextValue, aType );
 
        return KiROUND<double, int>( value );
    }
 
    EDA_ANGLE AngleValueFromString( const wxString& aTextValue ) const
    {
        double angle = EDA_UNIT_UTILS::UI::DoubleValueFromString( GetIuScale(), EDA_UNITS::DEGREES,
                                                                  aTextValue );
 
        return EDA_ANGLE( angle, DEGREES_T );
    }
 
    static inline const wxString NullUiString = "";
 
private:
    const EDA_IU_SCALE& m_iuScale;
    EDA_UNITS           m_userUnits;
};
 
#endif  // UNITS_PROVIDER_H