kicad/include/font/fontconfig.h

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4.3 KiB
C++

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2021 Ola Rinta-Koski
* Copyright (C) 2021-2022 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 KICAD_FONTCONFIG_H
#define KICAD_FONTCONFIG_H
#include <fontconfig/fontconfig.h>
#include <kicommon.h>
#include <wx/string.h>
#include <vector>
#include <map>
#include <unordered_map>
#include <font/fontinfo.h>
class REPORTER;
namespace fontconfig
{
struct FONTCONFIG_PAT;
class KICOMMON_API FONTCONFIG
{
public:
FONTCONFIG();
static wxString Version();
enum class FF_RESULT
{
FF_OK,
FF_ERROR,
FF_SUBSTITUTE,
FF_MISSING_BOLD,
FF_MISSING_ITAL,
FF_MISSING_BOLD_ITAL
};
/**
* Given a fully-qualified font name ("Times:Bold:Italic") find the closest matching font
* and return its filepath in \a aFontFile.
*
* A return value of false indicates a serious error in the font system.
*/
FF_RESULT FindFont( const wxString& aFontName, wxString& aFontFile, int& aFaceIndex, bool aBold, bool aItalic );
/**
* List the current available font families.
*
* @param aDesiredLang The desired language of font name to report back if available, otherwise it will fallback
*/
void ListFonts( std::vector<std::string>& aFonts, const std::string& aDesiredLang );
/**
* Set the reporter to use for reporting font substitution warnings.
*
* @param aReporter The reporter to use for reporting font substitution warnings.
*/
static void SetReporter( REPORTER* aReporter );
private:
std::map<std::string, FONTINFO> m_fontInfoCache;
wxString m_fontCacheLastLang;
static REPORTER* s_reporter;
/**
* Matches the two rfc 3306 language entries, used for when searching for matching family names
*
* The overall logic is simple, either both language tags matched exactly or one tag is "single" level
* that the other language tag contains.
* There's nuances to language tags beyond this but font tags will most likely never be more complex than
* say "zh-CN" or single tag "en".
*
* @param aSearchLang the language being searched for
* @param aSupportedLang the language being offered
*/
bool isLanguageMatch( const wxString& aSearchLang, const wxString& aSupportedLang );
/**
* Gets a list of all family name strings maped to lang
*
* @param aPat reference to FcPattern container
* @param aFamStringMap Map to be populated with key, value pairs representing lang to family name
*/
void getAllFamilyStrings( FONTCONFIG_PAT& aPat,
std::unordered_map<std::string, std::string>& aFamStringMap );
/**
* Gets a family name based on desired language.
* This will fallback to english or first available string if no language matching string is found.
*
* @param aPat reference to FcPattern container
* @param aDesiredLang Language to research for (RFC3066 format)
*/
std::string getFamilyStringByLang( FONTCONFIG_PAT& APat, const wxString& aDesiredLang );
/**
* Wrapper of FcPatternGetString to return a std::string
*
* @param aPat reference to FcPattern container
* @param aObj The fontconfig property object like FC_FAMILY, FC_STYLE, etc
* @param aIdx The ith value associated with the property object
*/
std::string getFcString( FONTCONFIG_PAT& aPat, const char* aObj, int aIdx );
};
} // namespace fontconfig
KICOMMON_API fontconfig::FONTCONFIG* Fontconfig();
#endif //KICAD_FONTCONFIG_H