kicad/include/settings/parameters.h

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2020 Jon Evans <jon@craftyjon.com>
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef _PARAMETERS_H
#define _PARAMETERS_H
#include <string>
#include <utility>
#include <math/util.h>
#include <core/optional.h>
#include <settings/json_settings.h>
class PARAM_BASE
{
public:
PARAM_BASE( std::string aJsonPath, bool aReadOnly ) :
m_path( std::move( aJsonPath ) ),
m_readOnly( aReadOnly )
{}
virtual ~PARAM_BASE() = default;
/**
* Loads the value of this parameter from JSON to the underlying storage
* @param aSettings is the JSON_SETTINGS object to load from.
* @param aResetIfMissing if true will set the parameter to its default value if load fails
*/
virtual void Load( JSON_SETTINGS* aSettings, bool aResetIfMissing = true ) const = 0;
/**
* Stores the value of this parameter to the given JSON_SETTINGS object
* @param aSettings is the JSON_SETTINGS object to store into.
*/
virtual void Store( JSON_SETTINGS* aSettings ) const = 0;
virtual void SetDefault() = 0;
/**
* Checks whether or not this param has been changed from its default value
* @return true if the parameter in memory matches its default value
*/
virtual bool IsDefault() const = 0;
/**
* Checks whether the parameter in memory matches the one in a given JSON file
* @param aSettings is a JSON_SETTINGS to check the JSON file contents of
* @return true if the parameter in memory matches its value in the file
*/
virtual bool MatchesFile( JSON_SETTINGS* aSettings ) const = 0;
/**
* @return the path name of the parameter used to store it in the json file
* mainly useful in error messages
*/
const std::string& GetJsonPath() const { return m_path; }
protected:
/**
* the string used to store the param in json files
*/
std::string m_path;
///! True if the parameter pointer should never be overwritten
bool m_readOnly;
};
template<typename ValueType>
class PARAM : public PARAM_BASE
{
public:
PARAM( const std::string& aJsonPath, ValueType* aPtr, ValueType aDefault,
bool aReadOnly = false ) :
PARAM_BASE( aJsonPath, aReadOnly ),
m_min(),
m_max(),
m_use_minmax( false ),
m_ptr( aPtr ),
m_default( aDefault )
{ }
PARAM( const std::string& aJsonPath, ValueType* aPtr, ValueType aDefault, ValueType aMin,
ValueType aMax, bool aReadOnly = false ) :
PARAM_BASE( aJsonPath, aReadOnly ),
m_min( aMin ),
m_max( aMax ),
m_use_minmax( true ),
m_ptr( aPtr ),
m_default( aDefault )
{ }
void Load( JSON_SETTINGS* aSettings, bool aResetIfMissing = true ) const override
{
if( m_readOnly )
return;
if( OPT<ValueType> optval = aSettings->Get<ValueType>( m_path ) )
{
ValueType val = *optval;
if( m_use_minmax )
{
if( m_max < val || val < m_min )
val = m_default;
}
*m_ptr = val;
}
else if( aResetIfMissing )
*m_ptr = m_default;
}
void Store( JSON_SETTINGS* aSettings ) const override
{
aSettings->Set<ValueType>( m_path, *m_ptr );
}
ValueType GetDefault() const
{
return m_default;
}
void SetDefault() override
{
*m_ptr = m_default;
}
bool IsDefault() const override
{
return *m_ptr == m_default;
}
bool MatchesFile( JSON_SETTINGS* aSettings ) const override
{
if( OPT<ValueType> optval = aSettings->Get<ValueType>( m_path ) )
return *optval == *m_ptr;
return false;
}
private:
ValueType m_min;
ValueType m_max;
bool m_use_minmax;
protected:
ValueType* m_ptr;
ValueType m_default;
};
/**
* Stores a path as a string with directory separators normalized to unix-style
*/
class PARAM_PATH : public PARAM<wxString>
{
public:
PARAM_PATH( const std::string& aJsonPath, wxString* aPtr, wxString aDefault,
bool aReadOnly = false ) :
PARAM( aJsonPath, aPtr, aDefault, aReadOnly )
{ }
void Load( JSON_SETTINGS* aSettings, bool aResetIfMissing = true ) const override
{
if( m_readOnly )
return;
PARAM::Load( aSettings, aResetIfMissing );
*m_ptr = fromFileFormat( *m_ptr );
}
void Store( JSON_SETTINGS* aSettings ) const override
{
aSettings->Set<wxString>( m_path, toFileFormat( *m_ptr ) );
}
bool MatchesFile( JSON_SETTINGS* aSettings ) const override
{
if( OPT<wxString> optval = aSettings->Get<wxString>( m_path ) )
return fromFileFormat( *optval ) == *m_ptr;
return false;
}
private:
wxString toFileFormat( const wxString& aString ) const
{
wxString ret = aString;
ret.Replace( wxT( "\\" ), wxT( "/" ) );
return ret;
}
wxString fromFileFormat( const wxString& aString ) const
{
wxString ret = aString;
#ifdef __WINDOWS__
ret.Replace( wxT( "/" ), wxT( "\\" ) );
#endif
return ret;
}
};
/**
* Stores an enum as an integer
*/
template<typename EnumType>
class PARAM_ENUM : public PARAM_BASE
{
public:
PARAM_ENUM( const std::string& aJsonPath, EnumType* aPtr, EnumType aDefault,
EnumType aMin, EnumType aMax, bool aReadOnly = false ) :
PARAM_BASE( aJsonPath, aReadOnly ),
m_ptr( aPtr ),
m_min( aMin ),
m_max( aMax ),
m_default( aDefault )
{
}
void Load( JSON_SETTINGS* aSettings, bool aResetIfMissing = true ) const override
{
if( m_readOnly )
return;
if( OPT<int> val = aSettings->Get<int>( m_path ) )
{
if( *val >= static_cast<int>( m_min ) && *val <= static_cast<int>( m_max ) )
*m_ptr = static_cast<EnumType>( *val );
else if( aResetIfMissing )
*m_ptr = m_default;
}
else if( aResetIfMissing )
*m_ptr = m_default;
}
void Store( JSON_SETTINGS* aSettings ) const override
{
aSettings->Set<int>( m_path, static_cast<int>( *m_ptr ) );
}
EnumType GetDefault() const
{
return m_default;
}
void SetDefault() override
{
*m_ptr = m_default;
}
bool IsDefault() const override
{
return *m_ptr == m_default;
}
bool MatchesFile( JSON_SETTINGS* aSettings ) const override
{
if( OPT<int> val = aSettings->Get<int>( m_path ) )
return *val == static_cast<int>( *m_ptr );
return false;
}
private:
EnumType* m_ptr;
EnumType m_min;
EnumType m_max;
EnumType m_default;
};
/**
* Like a normal param, but with custom getter and setter functions
* @tparam ValueType is the value to store
*/
template<typename ValueType>
class PARAM_LAMBDA : public PARAM_BASE
{
public:
PARAM_LAMBDA( const std::string& aJsonPath, std::function<ValueType()> aGetter,
std::function<void( ValueType )> aSetter, ValueType aDefault,
bool aReadOnly = false ) :
PARAM_BASE( aJsonPath, aReadOnly ),
m_default( aDefault ),
m_getter( aGetter ),
m_setter( aSetter )
{ }
void Load( JSON_SETTINGS* aSettings, bool aResetIfMissing = true ) const override;
void Store( JSON_SETTINGS* aSettings ) const override
{
try
{
aSettings->Set<ValueType>( m_path, m_getter() );
}
catch( ... )
{
}
}
ValueType GetDefault() const
{
return m_default;
}
void SetDefault() override
{
m_setter( m_default );
}
bool IsDefault() const override
{
return m_getter() == m_default;
}
bool MatchesFile( JSON_SETTINGS* aSettings ) const override;
private:
ValueType m_default;
std::function<ValueType()> m_getter;
std::function<void( ValueType )> m_setter;
};
/**
* Represents a parameter that has a scaling factor between the value in the file and the
* value used internally (i.e. the value pointer). This basically only makes sense to use
* with int or double as ValueType.
* @tparam ValueType is the internal type: the file always stores a double.
*/
template<typename ValueType>
class PARAM_SCALED: public PARAM_BASE
{
public:
PARAM_SCALED( const std::string& aJsonPath, ValueType* aPtr, ValueType aDefault,
double aScale = 1.0, bool aReadOnly = false ) :
PARAM_BASE( aJsonPath, aReadOnly ),
m_ptr( aPtr ),
m_default( aDefault ),
m_min(),
m_max(),
m_use_minmax( false ),
m_scale( aScale )
{ }
PARAM_SCALED( const std::string& aJsonPath, ValueType* aPtr, ValueType aDefault,
ValueType aMin, ValueType aMax, double aScale = 1.0, bool aReadOnly = false ) :
PARAM_BASE( aJsonPath, aReadOnly ),
m_ptr( aPtr ),
m_default( aDefault ),
m_min( aMin ),
m_max( aMax ),
m_use_minmax( true ),
m_scale( aScale )
{ }
void Load( JSON_SETTINGS* aSettings, bool aResetIfMissing = true ) const override
{
if( m_readOnly )
return;
double dval = m_default * m_scale;
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if( OPT<double> optval = aSettings->Get<double>( m_path ) )
dval = *optval;
else if( !aResetIfMissing )
return;
ValueType val = KiROUND<ValueType>( dval / m_scale );
if( m_use_minmax )
{
if( val > m_max || val < m_min )
val = m_default;
}
*m_ptr = val;
}
void Store( JSON_SETTINGS* aSettings) const override
{
aSettings->Set<double>( m_path, *m_ptr * m_scale );
}
ValueType GetDefault() const
{
return m_default;
}
virtual void SetDefault() override
{
*m_ptr = m_default;
}
bool IsDefault() const override
{
return *m_ptr == m_default;
}
bool MatchesFile( JSON_SETTINGS* aSettings ) const override
{
if( OPT<double> optval = aSettings->Get<double>( m_path ) )
return *optval == ( *m_ptr * m_scale );
return false;
}
private:
ValueType* m_ptr;
ValueType m_default;
ValueType m_min;
ValueType m_max;
bool m_use_minmax;
double m_scale;
};
template<typename Type>
class PARAM_LIST : public PARAM_BASE
{
public:
PARAM_LIST( const std::string& aJsonPath, std::vector<Type>* aPtr,
std::initializer_list<Type> aDefault, bool aReadOnly = false ) :
PARAM_BASE( aJsonPath, aReadOnly ),
m_ptr( aPtr ),
m_default( aDefault )
{ }
PARAM_LIST( const std::string& aJsonPath, std::vector<Type>* aPtr,
std::vector<Type> aDefault, bool aReadOnly = false ) :
PARAM_BASE( aJsonPath, aReadOnly ),
m_ptr( aPtr ),
m_default( aDefault )
{ }
void Load( JSON_SETTINGS* aSettings, bool aResetIfMissing = true ) const override;
void Store( JSON_SETTINGS* aSettings) const override;
void SetDefault() override
{
*m_ptr = m_default;
}
bool IsDefault() const override
{
return *m_ptr == m_default;
}
bool MatchesFile( JSON_SETTINGS* aSettings ) const override;
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protected:
std::vector<Type>* m_ptr;
std::vector<Type> m_default;
};
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/**
* Represents a list of strings holding directory paths.
* Normalizes paths to unix directory separator style in the file.
*/
class PARAM_PATH_LIST : public PARAM_LIST<wxString>
{
public:
PARAM_PATH_LIST( const std::string& aJsonPath, std::vector<wxString>* aPtr,
std::initializer_list<wxString> aDefault, bool aReadOnly = false ) :
PARAM_LIST( aJsonPath, aPtr, aDefault, aReadOnly )
{ }
PARAM_PATH_LIST( const std::string& aJsonPath, std::vector<wxString>* aPtr,
std::vector<wxString> aDefault, bool aReadOnly = false ) :
PARAM_LIST( aJsonPath, aPtr, aDefault, aReadOnly )
{ }
void Load( JSON_SETTINGS* aSettings, bool aResetIfMissing = true ) const override
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{
if( m_readOnly )
return;
PARAM_LIST::Load( aSettings, aResetIfMissing );
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for( size_t i = 0; i < m_ptr->size(); i++ )
( *m_ptr )[i] = fromFileFormat( ( *m_ptr )[i] );
}
void Store( JSON_SETTINGS* aSettings) const override;
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bool MatchesFile( JSON_SETTINGS* aSettings ) const override;
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private:
wxString toFileFormat( const wxString& aString ) const
{
wxString ret = aString;
ret.Replace( wxT( "\\" ), wxT( "/" ) );
return ret;
}
wxString fromFileFormat( const wxString& aString ) const
{
wxString ret = aString;
#ifdef __WINDOWS__
ret.Replace( wxT( "/" ), wxT( "\\" ) );
#endif
return ret;
}
};
/**
* Represents a map of <std::string, Value>. The key parameter has to be a string in JSON.
*
* The key must be stored in UTF-8 format, so any translated strings or strings provided by the
* user as a key must be converted to UTF-8 at the site where they are placed in the underlying
* map that this PARAM_MAP points to.
*
* Values must also be in UTF-8, but if you use wxString as the value type, this conversion will
* be done automatically by the to_json and from_json helpers defined in json_settings.cpp
*
* @tparam Value is the value type of the map
*/
template<typename Value>
class PARAM_MAP : public PARAM_BASE
{
public:
PARAM_MAP( const std::string& aJsonPath, std::map<std::string, Value>* aPtr,
std::initializer_list<std::pair<const std::string, Value>> aDefault,
bool aReadOnly = false ) :
PARAM_BASE( aJsonPath, aReadOnly ),
m_ptr( aPtr ),
m_default( aDefault )
{ }
void Load( JSON_SETTINGS* aSettings, bool aResetIfMissing = true ) const override;
void Store( JSON_SETTINGS* aSettings) const override;
virtual void SetDefault() override
{
*m_ptr = m_default;
}
bool IsDefault() const override
{
return *m_ptr == m_default;
}
bool MatchesFile( JSON_SETTINGS* aSettings ) const override;
private:
std::map<std::string, Value>* m_ptr;
std::map<std::string, Value> m_default;
};
/**
* A helper for <wxString, wxString> maps
*/
class PARAM_WXSTRING_MAP : public PARAM_BASE
{
public:
PARAM_WXSTRING_MAP( const std::string& aJsonPath, std::map<wxString, wxString>* aPtr,
std::initializer_list<std::pair<const wxString, wxString>> aDefault,
bool aReadOnly = false ) :
PARAM_BASE( aJsonPath, aReadOnly ),
m_ptr( aPtr ),
m_default( aDefault )
{ }
void Load( JSON_SETTINGS* aSettings, bool aResetIfMissing = true ) const override;
void Store( JSON_SETTINGS* aSettings) const override;
virtual void SetDefault() override
{
*m_ptr = m_default;
}
bool IsDefault() const override
{
return *m_ptr == m_default;
}
bool MatchesFile( JSON_SETTINGS* aSettings ) const override;
private:
std::map<wxString, wxString>* m_ptr;
std::map<wxString, wxString> m_default;
};
#endif