prepare hanling of chars the nee a backslash when written...

[lyx.git] / src / mathed / math_charinset.C

diff --git a/src/mathed/math_charinset.C b/src/mathed/math_charinset.C
index 7227fc004cb0e0f8447e747c12f3f46a211a3f38..bfb6a7c3ab05996af66c92de8a65658abc59bb4e 100644 (file)
--- a/src/mathed/math_charinset.C
+++ b/src/mathed/math_charinset.C
@@ -2,6 +2,8 @@
 #pragma implementation
 #endif
 
+#include <cctype>
+
 #include "math_charinset.h"
 #include "LColor.h"
 #include "Painter.h"
@@ -11,9 +13,36 @@
 #include "debug.h"
 
 
+MathCharInset::MathCharInset(char c)
+       : char_(c), code_(nativeCode(c)), needbs_(false)
+{
+//lyxerr << "creating char '" << char_ << "' with code " << int(code_) << endl;
+}
+
+
 MathCharInset::MathCharInset(char c, MathTextCodes t)
-       : char_(c), code_(t)
-{}
+       : char_(c), code_((t == LM_TC_MIN) ? nativeCode(c) : t), needbs_(false)
+{
+//lyxerr << "creating char '" << char_ << "' with code " << int(code_) << endl;
+}
+
+
+MathCharInset::MathCharInset(char c, MathTextCodes t, bool needbs)
+       : char_(c), code_((t == LM_TC_MIN) ? nativeCode(c) : t), needbs_(needbs)
+{
+//lyxerr << "creating char '" << char_ << "' with code " << int(code_) << endl;
+}
+
+
+MathTextCodes MathCharInset::nativeCode(char c) const
+{
+       if (isalpha(c))
+               return LM_TC_VAR;
+       if (strchr("#$%{|}", c))
+               return LM_TC_SPECIAL;
+       //if (strchr("0123456789;:!|[]().,?+/-*<>=", c)
+       return LM_TC_CONST;
+}
 
 
 MathInset * MathCharInset::clone() const
@@ -50,27 +79,45 @@ void MathCharInset::draw(Painter & pain, int x, int y) const
 { 
        xo(x);
        yo(y);
+       //lyxerr << "drawing '" << char_ << "' code: " << code_ << endl;
        drawChar(pain, code_, size_, x, y, char_);
 }
 
 
-void MathCharInset::write(std::ostream & os, bool) const
+void MathCharInset::writeHeader(std::ostream & os) const
 {
        if (code_ >= LM_TC_RM && code_ <= LM_TC_TEXTRM) 
                os << '\\' << math_font_name[code_ - LM_TC_RM] << '{';
+}
 
-       if (code_ == LM_TC_TEX || code_ == LM_TC_SPECIAL)
-               os << '\\';
-
-       os << char_;
 
+void MathCharInset::writeTrailer(std::ostream & os) const
+{
        if (code_ >= LM_TC_RM && code_ <= LM_TC_TEXTRM)
                os << '}';
 }
 
 
+void MathCharInset::writeRaw(std::ostream & os) const
+{
+       if (needbs_)
+               os << "\\";
+       os << char_;
+}
+
+
+void MathCharInset::write(std::ostream & os, bool) const
+{
+       writeHeader(os);
+       writeRaw(os);
+       writeTrailer(os);
+}
+
+
 void MathCharInset::writeNormal(std::ostream & os) const
 {
+       if (needbs_)
+               os << "\\";
        os << char_;
 }