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140 lines
3.5 KiB
C++
140 lines
3.5 KiB
C++
// -*- C++ -*-
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/**
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* \file src/Font.h
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Lars Gullik Bjønnes
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* \author Jean-Marc Lasgouttes
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* \author Angus Leeming
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* \author Dekel Tsur
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*
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* Full author contact details are available in file CREDITS.
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*/
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#ifndef FONT_H
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#define FONT_H
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#include "FontInfo.h"
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#include "support/strfwd.h"
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namespace lyx {
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class BufferParams;
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class Language;
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class LaTeXFeatures;
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class OutputParams;
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class otexstream;
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///
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class Font {
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public:
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///
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explicit Font(FontInfo = sane_font, Language const * l = nullptr);
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///
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FontInfo & fontInfo() { return bits_; }
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///
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FontInfo const & fontInfo() const { return bits_; }
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///
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Language const * language() const { return lang_; }
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///
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bool isRightToLeft() const;
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///
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bool isVisibleRightToLeft() const;
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///
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void setLanguage(Language const * l);
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/// Returns size of font in LaTeX text notation
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std::string const latexSize() const;
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/** Updates font settings according to request.
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If an attribute is IGNORE, the attribute is left as it is.
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When toggleall = true, all properties that matches the font in use
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will have the effect that the properties is reset to the
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default. If we have a text that is TYPEWRITER_FAMILY, and is
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update()'ed with TYPEWRITER_FAMILY, the operation will be as if
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a INHERIT_FAMILY was asked for. This is necessary for the
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toggle-user-defined-style button on the toolbar.
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*/
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void update(Font const & newfont,
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Language const * default_lang,
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bool toggleall = false);
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/// Writes the changes from this font to orgfont in .lyx format in file
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void lyxWriteChanges(Font const & orgfont, std::ostream &) const;
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/** Writes the head of the LaTeX needed to change to this font.
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Writes to string, the head of the LaTeX needed to change
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to this font. Returns number of chars written. Base is the
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font state active now.
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*/
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int latexWriteStartChanges(otexstream &, BufferParams const & bparams,
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OutputParams const & runparams,
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Font const & base,
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Font const & prev,
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bool const & non_inherit_inset = false,
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bool const & needs_cprotection = false) const;
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/** Writes the tail of the LaTeX needed to change to this font.
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Returns number of chars written. Base is the font state we want
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to achieve.
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*/
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int latexWriteEndChanges(otexstream &, BufferParams const & bparams,
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OutputParams const & runparams,
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Font const & base,
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Font const & next,
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bool & needPar,
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bool const & closeLanguage = true) const;
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/// Build GUI description of font state
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docstring const stateText(BufferParams * params = nullptr, bool const terse = false) const;
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///
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void validate(LaTeXFeatures & features) const;
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///
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friend
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bool operator==(Font const & font1, Font const & font2);
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///
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friend
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std::ostream & operator<<(std::ostream & os, Font const & font);
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/// Set \param data using \param font and \param toggle.
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std::string toString(bool toggle) const;
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/// Set \param font and \param toggle using \param data. Return success.
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bool fromString(std::string const & data, bool & toggle);
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private:
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///
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FontInfo bits_;
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///
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Language const * lang_;
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/// Did latexWriteStartChanges open an encoding environment?
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mutable bool open_encoding_;
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};
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///
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inline
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bool operator==(Font const & font1, Font const & font2)
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{
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return font1.bits_ == font2.bits_ && font1.lang_ == font2.lang_;
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}
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///
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inline
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bool operator!=(Font const & font1, Font const & font2)
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{
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return !(font1 == font2);
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}
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} // namespace lyx
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#endif
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