C++ FontInfo::reduce方法代码示例

/// Writes ending block of LaTeX needed to close use of this font
// Returns number of chars written
// This one corresponds to latexWriteStartChanges(). (Asger)
int Font::latexWriteEndChanges(otexstream & os, BufferParams const & bparams,
				  OutputParams const & runparams,
				  Font const & base,
				  Font const & next,
				  bool const & closeLanguage) const
{
	int count = 0;
	bool env = false;

	// reduce the current font to changes against the base
	// font (of the layout). We use a temporary for this to
	// avoid changing this font instance, as that would break
	FontInfo f = bits_;
	f.reduce(base.bits_);

	if (f.family() != INHERIT_FAMILY) {
		os << '}';
		++count;
		env = true; // Size change need not bother about closing env.
	}
	if (f.series() != INHERIT_SERIES) {
		os << '}';
		++count;
		env = true; // Size change need not bother about closing env.
	}
	if (f.shape() != INHERIT_SHAPE) {
		os << '}';
		++count;
		env = true; // Size change need not bother about closing env.
	}
	if (f.color() != Color_inherit && f.color() != Color_ignore) {
		os << '}';
		++count;
		env = true; // Size change need not bother about closing env.
	}
	if (f.emph() == FONT_ON) {
		os << '}';
		++count;
		env = true; // Size change need not bother about closing env.
	}
	if (f.noun() == FONT_ON) {
		os << '}';
		++count;
		env = true; // Size change need not bother about closing env.
	}
	if (f.size() != FONT_SIZE_INHERIT) {
		// We only have to close if only size changed
		if (!env) {
			os << '}';
			++count;
		}
	}
	if (f.underbar() == FONT_ON) {
		os << '}';
		++count;
		runparams.inulemcmd = false;
	}
	if (f.strikeout() == FONT_ON) {
		os << '}';
		++count;
		runparams.inulemcmd = false;
	}
	if (f.uuline() == FONT_ON) {
		os << '}';
		++count;
		runparams.inulemcmd = false;
	}
	if (f.uwave() == FONT_ON) {
		os << '}';
		++count;
		runparams.inulemcmd = false;
	}

	// If the current language is Hebrew, Arabic, or Farsi
	// the numbers are written Left-to-Right. ArabTeX package
	// reorders the number automatically but the packages used
	// for Hebrew and Farsi (Arabi) do not.
	if (bits_.number() == FONT_ON && next.fontInfo().number() != FONT_ON
		&& (language()->lang() == "hebrew"
			|| language()->lang() == "farsi"
			|| language()->lang() == "arabic_arabi")) {
		os << "\\endL}";
		count += 6;
	}

	if (open_encoding_) {
		// We need to close the encoding even if it does not change
		// to do correct environment nesting
		Encoding const * const ascii = encodings.fromLyXName("ascii");
		pair<bool, int> const c = switchEncoding(os.os(), bparams,
				runparams, *ascii);
		LATTEST(c.first);
		count += c.second;
		runparams.encoding = ascii;
		open_encoding_ = false;
	}

//.........这里部分代码省略.........

/// Writes the head of the LaTeX needed to impose this font
// Returns number of chars written.
int Font::latexWriteStartChanges(odocstream & os, BufferParams const & bparams,
				    OutputParams const & runparams,
				    Font const & base,
				    Font const & prev) const
{
	bool env = false;

	int count = 0;

	// polyglossia or babel?
	if (runparams.use_polyglossia
	    && language()->lang() != base.language()->lang()
	    && language() != prev.language()) {
		if (!language()->polyglossia().empty()) {
			string tmp = "\\text" + language()->polyglossia();
			if (!language()->polyglossiaOpts().empty())
				tmp += "[" + language()->polyglossiaOpts() + "]";
			tmp += "{";
			os << from_ascii(tmp);
			count += tmp.length();
		} else {
			os << '{';
			count += 1;
		}
	} else if (language()->babel() != base.language()->babel() &&
	    language() != prev.language()) {
		if (language()->lang() == "farsi") {
			os << "\\textFR{";
			count += 8;
		} else if (!isRightToLeft() &&
			    base.language()->lang() == "farsi") {
			os << "\\textLR{";
			count += 8;
		} else if (language()->lang() == "arabic_arabi") {
			os << "\\textAR{";
			count += 8;
 		} else if (!isRightToLeft() &&
				base.language()->lang() == "arabic_arabi") {
			os << "\\textLR{";
			count += 8;
		// currently the remaining RTL languages are arabic_arabtex and hebrew
		} else if (isRightToLeft() != prev.isRightToLeft()) {
			if (isRightToLeft()) {
				os << "\\R{";
				count += 3;
			} else {
				os << "\\L{";
				count += 3;
			}
		} else if (!language()->babel().empty()) {
			string const tmp =
				subst(lyxrc.language_command_local,
				      "$$lang", language()->babel());
			os << from_ascii(tmp);
			count += tmp.length();
		} else {
			os << '{';
			count += 1;
		}
	}

	if (language()->encoding()->package() == Encoding::CJK) {
		pair<bool, int> const c = switchEncoding(os, bparams,
				runparams, *(language()->encoding()));
		if (c.first) {
			open_encoding_ = true;
			count += c.second;
			runparams.encoding = language()->encoding();
		}
	}

	// If the current language is Hebrew, Arabic, or Farsi
	// the numbers are written Left-to-Right. ArabTeX package
	// reorders the number automatically but the packages used
	// for Hebrew and Farsi (Arabi) do not.
	if (bits_.number() == FONT_ON && prev.fontInfo().number() != FONT_ON
		&& (language()->lang() == "hebrew"
			|| language()->lang() == "farsi" 
			|| language()->lang() == "arabic_arabi")) {
		os << "{\\beginL ";
		count += 9;
	}

	FontInfo f = bits_;
	f.reduce(base.bits_);

	if (f.family() != INHERIT_FAMILY) {
		os << '\\'
		   << LaTeXFamilyNames[f.family()]
		   << '{';
		count += strlen(LaTeXFamilyNames[f.family()]) + 2;
		env = true; //We have opened a new environment
	}
	if (f.series() != INHERIT_SERIES) {
		os << '\\'
		   << LaTeXSeriesNames[f.series()]
		   << '{';
		count += strlen(LaTeXSeriesNames[f.series()]) + 2;
//.........这里部分代码省略.........