some *cough* support for \ll and \gg and potentially more...

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@2561 a592a061-630c-0410-9148-cb99ea01b6c8

src/mathed/Makefile.am

@@ -26,6 +26,8 @@ libmathed_la_SOURCES = \
 	math_bigopinset.h \
 	math_binominset.C \
 	math_binominset.h \
+	math_cheatinset.C \
+	math_cheatinset.h \
 	math_charinset.C \
 	math_charinset.h \
 	math_cursor.C \

src/mathed/math_cheatinset.C

@@ -0,0 +1,39 @@
+#ifdef __GNUG__
+#pragma implementation
+#endif
+
+#include "math_cheatinset.h"
+#include "support.h"
+#include "support/LOstream.h"
+
+
+
+MathCheatInset::MathCheatInset(double w)
+	: wid_(w)
+{}
+
+
+MathInset * MathCheatInset::clone() const
+{
+	return new MathCheatInset(*this);
+}
+
+
+void MathCheatInset::draw(Painter & pain, int x, int y) const
+{}
+
+
+void MathCheatInset::write(std::ostream &, bool) const
+{}
+
+
+void MathCheatInset::writeNormal(std::ostream &) const
+{}
+
+
+void MathCheatInset::metrics(MathStyles st) const
+{
+	// mimic -.1em
+	mathed_char_dim(LM_TC_CONST, st, 'm', ascent_, descent_, width_);
+	width_ *= wid_;
+}

src/mathed/math_cheatinset.h

@@ -0,0 +1,31 @@
+// -*- C++ -*-
+#ifndef MATH_CHEATINSET_H
+#define MATH_CHEATINSET_H
+
+#include "math_diminset.h"
+
+#ifdef __GNUG__
+#pragma interface
+#endif
+
+/// Some cheating for displaying things like \ll etc
+
+class MathCheatInset : public MathDimInset {
+public:
+	///
+	explicit MathCheatInset(double wid);
+	///
+	MathInset * clone() const;
+	///
+	void draw(Painter &, int x, int y) const;
+	///
+	void write(std::ostream &, bool fragile) const;
+	///
+	void writeNormal(std::ostream &) const;
+	///
+	void metrics(MathStyles st) const;
+private:
+	/// width in em
+	double wid_;
+};
+#endif

src/mathed/math_hash.C

@@ -137,7 +137,6 @@ latexkeys wordlist[] =
 	{"gamma",  LM_TK_SYM, LM_gamma, LMB_NONE},
 	{"gcd",  LM_TK_FUNCLIM, 0, LMB_NONE},
 	{"geq",  LM_TK_SYM, LM_geq, LMB_RELATION},
-	{"gg",  LM_TK_NOGLYPH, 0, LMB_RELATION},
 	{"grave",  LM_TK_DECORATION, LM_grave, LMB_NONE},
 	{"hat",  LM_TK_DECORATION, LM_hat, LMB_NONE},
 	{"hbar",  LM_TK_NOGLYPH, 0, LMB_NONE},
@@ -171,7 +170,6 @@ latexkeys wordlist[] =
 	{"liminf",  LM_TK_FUNCLIM, 0, LMB_NONE},
 	{"limits",  LM_TK_LIMIT, 1 , LMB_NONE},
 	{"limsup",  LM_TK_FUNCLIM, 0, LMB_NONE},
-	{"ll",  LM_TK_NOGLYPH, 0, LMB_RELATION},
 	{"ln",  LM_TK_FUNC, 0, LMB_NONE},
 	{"log",  LM_TK_FUNC, 0, LMB_NONE},
 	{"longleftarrow",  LM_TK_NOGLYPH, 0, LMB_NONE},

src/mathed/math_macrotable.C

@@ -11,6 +11,8 @@
 #include "math_macrotemplate.h"
 #include "math_parser.h"
 #include "math_fracinset.h"
+#include "math_cheatinset.h"
+#include "math_charinset.h"
 #include "debug.h"
 
 
@@ -100,4 +102,16 @@ void MathMacroTable::builtinMacros()
 	//createTemplate("lint",       4, "\\int_#1^#2#3 d#4");
 	//createTemplate("silentmult", 0, "\\cdot");
 	//createTemplate("binom",        2, "\\left(\\frac#1#2\\right)");
+	
+	MathMacroTemplate ll("ll", 0);
+	ll.cell(0).push_back(new MathCharInset('<', LM_TC_CONST));
+	ll.cell(0).push_back(new MathCheatInset(-0.9));
+	ll.cell(0).push_back(new MathCharInset('<', LM_TC_CONST));
+	insertTemplate(ll);
+
+	MathMacroTemplate gg("gg", 0);
+	gg.cell(0).push_back(new MathCharInset('>', LM_TC_CONST));
+	gg.cell(0).push_back(new MathCheatInset(-0.9));
+	gg.cell(0).push_back(new MathCharInset('>', LM_TC_CONST));
+	insertTemplate(gg);
 }