X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Finsets%2FInsetSpecialChar.cpp;h=2614f9a2ebe3aa6788f0767daf7af30d5bd152a0;hb=71b8019d56142397994e0ef2d4244ada51f199d5;hp=77792b973cd02e228b927d2f46e29d9d886fa4c4;hpb=3e9e6e344ace9160f93fd882bf2243d24a069fa5;p=lyx.git

diff --git a/src/insets/InsetSpecialChar.cpp b/src/insets/InsetSpecialChar.cpp
index 77792b973c..2614f9a2eb 100644
--- a/src/insets/InsetSpecialChar.cpp
+++ b/src/insets/InsetSpecialChar.cpp
@@ -16,10 +16,12 @@
 
 #include "Dimension.h"
 #include "Font.h"
+#include "Language.h"
 #include "LaTeXFeatures.h"
 #include "Lexer.h"
 #include "MetricsInfo.h"
 #include "output_xhtml.h"
+#include "texstream.h"
 
 #include "frontends/FontMetrics.h"
 #include "frontends/Painter.h"
@@ -43,15 +45,98 @@ InsetSpecialChar::Kind InsetSpecialChar::kind() const
 }
 
 
+namespace {
+
+int logoWidth(FontInfo const & font, InsetSpecialChar::Kind kind) {
+	frontend::FontMetrics const & fm = theFontMetrics(font);
+	int const em = fm.em();
+	int width = 0;
+	// See drawlogo() below to understand what this does.
+	switch (kind) {
+	case InsetSpecialChar::PHRASE_LYX:
+		width = fm.width(from_ascii("L")) - em / 6
+			+ fm.width(from_ascii("Y")) - em / 8
+			+ fm.width(from_ascii("X"));
+		break;
+
+	case InsetSpecialChar::PHRASE_TEX:
+		width = fm.width(from_ascii("T")) - em / 6
+			+ fm.width(from_ascii("E")) - em / 8
+			+ fm.width(from_ascii("X"));
+		break;
+
+	case InsetSpecialChar::PHRASE_LATEX2E:
+		width = logoWidth(font, InsetSpecialChar::PHRASE_LATEX)
+			+ 3 * em / 20
+			+ fm.width(from_ascii("2") + char_type(0x03b5));
+		break;
+	case InsetSpecialChar::PHRASE_LATEX: {
+		FontInfo smaller = font;
+		smaller.decSize().decSize();
+		width = fm.width(from_ascii("L")) - 9 * em / 25
+			+ theFontMetrics(smaller).width(from_ascii("A")) - 3 * em / 20
+			+ logoWidth(font, InsetSpecialChar::PHRASE_TEX);
+		break;
+	}
+	default:
+		LYXERR0("No information for computing width of logo " << kind);
+	}
+
+	return width;
+}
+
+} // namespace
+
+docstring InsetSpecialChar::toolTip(BufferView const &, int, int) const
+{
+	docstring message;
+	switch (kind_) {
+		case ALLOWBREAK:
+			message = from_ascii("Optional Line Break (ZWSP)");
+			break;
+		case LIGATURE_BREAK:
+			message = from_ascii("Ligature Break (ZWNJ)");
+			break;
+		case END_OF_SENTENCE:
+			message = from_ascii("End of Sentence");
+			break;
+		case HYPHENATION:
+			message = from_ascii("Hyphenation Point");
+			break;
+		case SLASH:
+			message = from_ascii("Breakable Slash");
+			break;
+		case NOBREAKDASH:
+			message = from_ascii("Protected Hyphen (SHY)");
+			break;
+		case LDOTS:
+		case MENU_SEPARATOR:
+		case PHRASE_LYX:
+		case PHRASE_TEX:
+		case PHRASE_LATEX2E:
+		case PHRASE_LATEX:
+			// no tooltip for these ones.
+			break;
+	}
+	return message;
+}
+
+
 void InsetSpecialChar::metrics(MetricsInfo & mi, Dimension & dim) const
 {
 	frontend::FontMetrics const & fm =
 		theFontMetrics(mi.base.font);
 	dim.asc = fm.maxAscent();
-	dim.des = fm.maxDescent();
+	dim.des = 0;
+	dim.wid = 0;
 
 	docstring s;
 	switch (kind_) {
+		case ALLOWBREAK:
+			dim.asc = fm.ascent('x');
+			dim.des = fm.descent('g');
+			dim.wid = fm.em() / 8;
+			break;
 		case LIGATURE_BREAK:
 			s = from_ascii("|");
 			break;
@@ -62,38 +147,117 @@ void InsetSpecialChar::metrics(MetricsInfo & mi, Dimension & dim) const
 			s = from_ascii(". . .");
 			break;
 		case MENU_SEPARATOR:
-			s = from_ascii(" x ");
+			// ▹  U+25B9 WHITE RIGHT-POINTING SMALL TRIANGLE
+			// There is a \thinspace on each side of the triangle
+			dim.wid = 2 * fm.em() / 6 + fm.width(char_type(0x25B9));
 			break;
 		case HYPHENATION:
-			s = from_ascii("-");
+			dim.wid = fm.width(from_ascii("-"));
+			if (dim.wid > 5)
+				dim.wid -= 2; // to make it look shorter
 			break;
 		case SLASH:
 			s = from_ascii("/");
+			dim.des = fm.descent(s[0]);
 			break;
 		case NOBREAKDASH:
 			s = from_ascii("-");
 			break;
 		case PHRASE_LYX:
-			s = from_ascii("LyX");
-			break;
 		case PHRASE_TEX:
-			s = from_ascii("TeX");
-			break;
 		case PHRASE_LATEX2E:
-			s = from_ascii("LaTeX2") + char_type(0x03b5);
-			break;
 		case PHRASE_LATEX:
-			s = from_ascii("LaTeX");
+			dim.asc = fm.maxAscent();
+			dim.des = fm.maxDescent();
+			dim.wid = logoWidth(mi.base.font, kind_);
 			break;
 	}
-	dim.wid = fm.width(s);
-	if (kind_ == HYPHENATION && dim.wid > 5)
-		dim.wid -= 2; // to make it look shorter
-	
-	setDimCache(mi, dim);
+	if (dim.wid == 0)
+		dim.wid = fm.width(s);
 }
 
 
+namespace {
+
+// helper function: draw text and update x.
+void drawChar(PainterInfo & pi, int & x, int const y, char_type ch)
+{
+	FontInfo font = pi.base.font;
+	font.setPaintColor(pi.textColor(font.realColor()));
+	pi.pain.text(x, y, ch, font);
+	x += theFontMetrics(font).width(ch);
+}
+
+
+void drawLogo(PainterInfo & pi, int & x, int const y, InsetSpecialChar::Kind kind)
+{
+	FontInfo const & font = pi.base.font;
+	int const em = theFontMetrics(font).em();
+	switch (kind) {
+	case InsetSpecialChar::PHRASE_LYX:
+		/** Reference macro:
+		 *  \providecommand{\LyX}{L\kern-.1667em\lower.25em\hbox{Y}\kern-.125emX\\@};
+		 */
+		drawChar(pi, x, y, 'L');
+		x -= em / 6;
+		drawChar(pi, x, y + em / 4, 'Y');
+		x -= em / 8;
+		drawChar(pi, x, y, 'X');
+		break;
+
+	case InsetSpecialChar::PHRASE_TEX: {
+		/** Reference macro:
+		 *  \def\TeX{T\kern-.1667em\lower.5ex\hbox{E}\kern-.125emX\@}
+		 */
+		int const ex = theFontMetrics(font).ascent('x');
+		drawChar(pi, x, y, 'T');
+		x -= em / 6;
+		drawChar(pi, x, y + ex / 2, 'E');
+		x -= em / 8;
+		drawChar(pi, x, y, 'X');
+		break;
+	}
+	case InsetSpecialChar::PHRASE_LATEX2E:
+		/** Reference macro:
+		 *  \DeclareRobustCommand{\LaTeXe}{\mbox{\m@th
+		 *    \if b\expandafter\@car\f@series\@nil\boldmath\fi
+		 *    \LaTeX\kern.15em2$_{\textstyle\varepsilon}$}}
+		 */
+		drawLogo(pi, x, y, InsetSpecialChar::PHRASE_LATEX);
+		x += 3 * em / 20;
+		drawChar(pi, x, y, '2');
+		drawChar(pi, x, y + em / 4, char_type(0x03b5));
+		break;
+
+	case InsetSpecialChar::PHRASE_LATEX: {
+		/** Reference macro:
+		 * \DeclareRobustCommand{\LaTeX}{L\kern-.36em%
+		 *        {\sbox\z@ T%
+		 *         \vbox to\ht\z@{\hbox{\check@mathfonts
+		 *                              \fontsize\sf@size\z@
+		 *                              \math@fontsfalse\selectfont
+		 *                              A}%
+		 *                        \vss}%
+		 *        }%
+		 *        \kern-.15em%
+		 *        \TeX}
+		 */
+		drawChar(pi, x, y, 'L');
+		x -= 9 * em / 25;
+		PainterInfo pi2 = pi;
+		pi2.base.font.decSize().decSize();
+		drawChar(pi2, x, y - em / 5, 'A');
+		x -= 3 * em / 20;
+		drawLogo(pi, x, y, InsetSpecialChar::PHRASE_TEX);
+		break;
+	}
+	default:
+		LYXERR0("No information for drawing logo " << kind);
+	}
+}
+
+} // namespace
+
 void InsetSpecialChar::draw(PainterInfo & pi, int x, int y) const
 {
 	FontInfo font = pi.base.font;
@@ -105,6 +269,18 @@ void InsetSpecialChar::draw(PainterInfo & pi, int x, int y) const
 		pi.pain.text(x, y, char_type('-'), font);
 		break;
 	}
+	case ALLOWBREAK:
+	{
+		// A small vertical line
+		int const asc = theFontMetrics(pi.base.font).ascent('x');
+		int const desc = theFontMetrics(pi.base.font).descent('g');
+		int const x0 = x; // x + 1; // FIXME: incline,
+		int const x1 = x; // x - 1; // similar to LibreOffice?
+		int const y0 = y + desc;
+		int const y1 = y - asc / 3;
+		pi.pain.line(x0, y1, x1, y0, Color_special);
+		break;
+	}
 	case LIGATURE_BREAK:
 	{
 		font.setColor(Color_special);
@@ -130,18 +306,13 @@ void InsetSpecialChar::draw(PainterInfo & pi, int x, int y) const
 		frontend::FontMetrics const & fm =
 			theFontMetrics(font);
 
-		// A triangle the width and height of an 'x'
-		int w = fm.width(char_type('x'));
-		int ox = fm.width(char_type(' ')) + x;
-		int h = fm.ascent(char_type('x'));
-		int xp[4], yp[4];
-
-		xp[0] = ox;     yp[0] = y;
-		xp[1] = ox;     yp[1] = y - h;
-		xp[2] = ox + w; yp[2] = y - h/2;
-		xp[3] = ox;     yp[3] = y;
-
-		pi.pain.lines(xp, yp, 4, Color_special);
+		// There is a \thinspace on each side of the triangle
+		x += fm.em() / 6;
+		// ▹ U+25B9 WHITE RIGHT-POINTING SMALL TRIANGLE
+		// ◃ U+25C3 WHITE LEFT-POINTING SMALL TRIANGLE
+		char_type const c = pi.ltr_pos ? 0x25B9 : 0x25C3;
+		font.setColor(Color_special);
+		pi.pain.text(x, y, c, font);
 		break;
 	}
 	case SLASH:
@@ -157,95 +328,88 @@ void InsetSpecialChar::draw(PainterInfo & pi, int x, int y) const
 		break;
 	}
 	case PHRASE_LYX:
-		font.setColor(Color_special);
-		pi.pain.text(x, y, from_ascii("LyX"), font);
-		break;
 	case PHRASE_TEX:
-		font.setColor(Color_special);
-		pi.pain.text(x, y, from_ascii("TeX"), font);
-		break;
 	case PHRASE_LATEX2E:
-		font.setColor(Color_special);
-		pi.pain.text(x, y, from_ascii("LaTeX2") + char_type(0x03b5), font);
-		break;
 	case PHRASE_LATEX:
-		font.setColor(Color_special);
-		pi.pain.text(x, y, from_ascii("LaTeX"), font);
+		drawLogo(pi, x, y, kind_);
 		break;
 	}
 }
 
 
-// In lyxf3 this will be just LaTeX
 void InsetSpecialChar::write(ostream & os) const
 {
 	string command;
 	switch (kind_) {
 	case HYPHENATION:
-		command = "\\-";
+		command = "softhyphen";
+		break;
+	case ALLOWBREAK:
+		command = "allowbreak";
 		break;
 	case LIGATURE_BREAK:
-		command = "\\textcompwordmark{}";
+		command = "ligaturebreak";
 		break;
 	case END_OF_SENTENCE:
-		command = "\\@.";
+		command = "endofsentence";
 		break;
 	case LDOTS:
-		command = "\\ldots{}";
+		command = "ldots";
 		break;
 	case MENU_SEPARATOR:
-		command = "\\menuseparator";
+		command = "menuseparator";
 		break;
 	case SLASH:
-		command = "\\slash{}";
+		command = "breakableslash";
 		break;
 	case NOBREAKDASH:
-		command = "\\nobreakdash-";
+		command = "nobreakdash";
 		break;
 	case PHRASE_LYX:
-		command = "\\LyX";
+		command = "LyX";
 		break;
 	case PHRASE_TEX:
-		command = "\\TeX";
+		command = "TeX";
 		break;
 	case PHRASE_LATEX2E:
-		command = "\\LaTeX2e";
+		command = "LaTeX2e";
 		break;
 	case PHRASE_LATEX:
-		command = "\\LaTeX";
+		command = "LaTeX";
 		break;
 	}
 	os << "\\SpecialChar " << command << "\n";
 }
 
 
-// This function will not be necessary when lyx3
 void InsetSpecialChar::read(Lexer & lex)
 {
 	lex.next();
 	string const command = lex.getString();
 
-	if (command == "\\-")
+	if (command == "softhyphen")
 		kind_ = HYPHENATION;
-	else if (command == "\\textcompwordmark{}")
+	else if (command == "allowbreak")
+		kind_ = ALLOWBREAK;
+	else if (command == "ligaturebreak")
 		kind_ = LIGATURE_BREAK;
-	else if (command == "\\@.")
+	else if (command == "endofsentence")
 		kind_ = END_OF_SENTENCE;
-	else if (command == "\\ldots{}")
+	else if (command == "ldots")
 		kind_ = LDOTS;
-	else if (command == "\\menuseparator")
+	else if (command == "menuseparator")
 		kind_ = MENU_SEPARATOR;
-	else if (command == "\\slash{}")
+	else if (command == "breakableslash")
 		kind_ = SLASH;
-	else if (command == "\\nobreakdash-")
+	else if (command == "nobreakdash")
 		kind_ = NOBREAKDASH;
-	else if (command == "\\LyX")
+	else if (command == "LyX")
 		kind_ = PHRASE_LYX;
-	else if (command == "\\TeX")
+	else if (command == "TeX")
 		kind_ = PHRASE_TEX;
-	else if (command == "\\LaTeX2e")
+	else if (command == "LaTeX2e")
 		kind_ = PHRASE_LATEX2E;
-	else if (command == "\\LaTeX")
+	else if (command == "LaTeX")
 		kind_ = PHRASE_LATEX;
 	else
 		lex.printError("InsetSpecialChar: Unknown kind: `$$Token'");
@@ -255,27 +419,42 @@ void InsetSpecialChar::read(Lexer & lex)
 void InsetSpecialChar::latex(otexstream & os,
 			     OutputParams const & rp) const
 {
+	bool const rtl = rp.local_font->isRightToLeft();
+	string lswitch = "";
+	string lswitche = "";
+	if (rtl && !rp.use_polyglossia) {
+		lswitch = "\\L{";
+		lswitche = "}";
+		if (rp.local_font->language()->lang() == "arabic_arabi"
+		    || rp.local_font->language()->lang() == "farsi")
+			lswitch = "\\textLR{";
+	}
+
 	switch (kind_) {
 	case HYPHENATION:
 		os << "\\-";
 		break;
+	case ALLOWBREAK:
+		os << "\\LyXZeroWidthSpace" << termcmd;
+		break;
 	case LIGATURE_BREAK:
-		os << "\\textcompwordmark{}";
+		os << "\\textcompwordmark" << termcmd;
 		break;
 	case END_OF_SENTENCE:
 		os << "\\@.";
 		break;
 	case LDOTS:
-		os << "\\ldots{}";
+		os << "\\ldots" << termcmd;
 		break;
 	case MENU_SEPARATOR:
-		if (rp.local_font->isRightToLeft())
-			os << "\\lyxarrow*{}";
+		if (rtl)
+			os << "\\lyxarrow*";
 		else
-			os << "\\lyxarrow{}";
+			os << "\\lyxarrow";
+		os << termcmd;
 		break;
 	case SLASH:
-		os << "\\slash{}";
+		os << "\\slash" << termcmd;
 		break;
 	case NOBREAKDASH:
 		if (rp.moving_arg)
@@ -285,22 +464,22 @@ void InsetSpecialChar::latex(otexstream & os,
 	case PHRASE_LYX:
 		if (rp.moving_arg)
 			os << "\\protect";
-		os << "\\LyX{}";
+		os << lswitch << "\\LyX" << termcmd << lswitche;
 		break;
 	case PHRASE_TEX:
 		if (rp.moving_arg)
 			os << "\\protect";
-		os << "\\TeX{}";
+		os << lswitch << "\\TeX" << termcmd << lswitche;
 		break;
 	case PHRASE_LATEX2E:
 		if (rp.moving_arg)
 			os << "\\protect";
-		os << "\\LaTeX2e{}";
+		os << lswitch << "\\LaTeXe" << termcmd << lswitche;
 		break;
 	case PHRASE_LATEX:
 		if (rp.moving_arg)
 			os << "\\protect";
-		os << "\\LaTeX{}";
+		os << lswitch << "\\LaTeX" << termcmd << lswitche;
 		break;
 	}
 }
@@ -312,6 +491,9 @@ int InsetSpecialChar::plaintext(odocstringstream & os,
 	switch (kind_) {
 	case HYPHENATION:
 		return 0;
+	case ALLOWBREAK:
+		os.put(0x200b);
+		return 1;
 	case LIGATURE_BREAK:
 		os.put(0x200c);
 		return 1;
@@ -352,6 +534,10 @@ int InsetSpecialChar::docbook(odocstream & os, OutputParams const &) const
 {
 	switch (kind_) {
 	case HYPHENATION:
+		break;
+	case ALLOWBREAK:
+		os.put(0x200b);
+		break;
 	case LIGATURE_BREAK:
 		break;
 	case END_OF_SENTENCE:
@@ -392,6 +578,9 @@ docstring InsetSpecialChar::xhtml(XHTMLStream & xs, OutputParams const &) const
 	switch (kind_) {
 	case HYPHENATION:
 		break;
+	case ALLOWBREAK:
+		xs << XHTMLStream::ESCAPE_NONE << "&#8203;";
+		break;
 	case LIGATURE_BREAK:
 		xs << XHTMLStream::ESCAPE_NONE << "&#8204;";
 		break;
@@ -430,8 +619,9 @@ docstring InsetSpecialChar::xhtml(XHTMLStream & xs, OutputParams const &) const
 void InsetSpecialChar::toString(odocstream & os) const
 {
 	switch (kind_) {
+	case ALLOWBREAK:
 	case LIGATURE_BREAK:
-		// Do not output ZERO WIDTH NON JOINER here
+		// Do not output ZERO WIDTH SPACE and ZERO WIDTH NON JOINER here
 		// Spell checker would choke on it.
 		return;
 	default:
@@ -443,7 +633,8 @@ void InsetSpecialChar::toString(odocstream & os) const
 }
 
 
-void InsetSpecialChar::forOutliner(docstring & os, size_t) const
+void InsetSpecialChar::forOutliner(docstring & os, size_t const,
+								   bool const) const
 {
 	odocstringstream ods;
 	plaintext(ods, OutputParams(0));
@@ -453,6 +644,8 @@ void InsetSpecialChar::forOutliner(docstring & os, size_t) const
 
 void InsetSpecialChar::validate(LaTeXFeatures & features) const
 {
+	if (kind_ == ALLOWBREAK)
+		features.require("lyxzerowidthspace");
 	if (kind_ == MENU_SEPARATOR)
 		features.require("lyxarrow");
 	if (kind_ == NOBREAKDASH)
@@ -462,6 +655,12 @@ void InsetSpecialChar::validate(LaTeXFeatures & features) const
 }
 
 
+bool InsetSpecialChar::isChar() const
+{
+	return kind_ != HYPHENATION && kind_ != LIGATURE_BREAK;
+}
+
+
 bool InsetSpecialChar::isLetter() const
 {
 	return kind_ == HYPHENATION || kind_ == LIGATURE_BREAK
@@ -476,8 +675,8 @@ bool InsetSpecialChar::isLineSeparator() const
 	// Paragraph::stripLeadingSpaces nukes the characters which
 	// have this property. I leave the code here, since it should
 	// eventually be made to work. (JMarc 20020327)
-	return kind_ == HYPHENATION || kind_ == MENU_SEPARATOR
-		|| kind_ == SLASH;
+	return kind_ == HYPHENATION || kind_ == ALLOWBREAK
+	    || kind_ == MENU_SEPARATOR || kind_ == SLASH;
 #else
 	return false;
 #endif