Display properly math characters that behave like symbols

[lyx.git] / src / mathed / MathSupport.cpp

diff --git a/src/mathed/MathSupport.cpp b/src/mathed/MathSupport.cpp
index 5c3e84f249f816d7d0bcb876aa9fbf7cb5272d23..0c610b1e69412c202c66505d576d4401870452fc 100644 (file)
--- a/src/mathed/MathSupport.cpp
+++ b/src/mathed/MathSupport.cpp
@@ -27,6 +27,7 @@
 
 #include "support/debug.h"
 #include "support/docstream.h"
+#include "support/lassert.h"
 #include "support/lyxlib.h"
 
 #include <map>
@@ -656,6 +657,52 @@ void mathed_draw_deco(PainterInfo & pi, int x, int y, int w, int h,
 }
 
 
+void mathedSymbolDim(MetricsInfo & mi, Dimension & dim, latexkeys const * sym)
+{
+       LASSERT((bool)sym, return);
+       //lyxerr << "metrics: symbol: '" << sym->name
+       //      << "' in font: '" << sym->inset
+       //      << "' drawn as: '" << sym->draw
+       //      << "'" << endl;
+
+       bool const italic_upcase_greek = sym->inset == "cmr" &&
+               sym->extra == "mathalpha" &&
+               mi.base.fontname == "mathit";
+       std::string const font = italic_upcase_greek ? "cmm" : sym->inset;
+       Changer dummy = mi.base.changeFontSet(font);
+       mathed_string_dim(mi.base.font, sym->draw, dim);
+       // seperate things a bit
+       if (sym->extra == "mathbin")
+               dim.wid += 2 * mathed_medmuskip(mi.base.font);
+       else if (sym->extra == "mathrel")
+               dim.wid += 2 * mathed_thickmuskip(mi.base.font);
+       else if (sym->extra == "mathpunct")
+               dim.wid += mathed_thinmuskip(mi.base.font);
+}
+
+
+void mathedSymbolDraw(PainterInfo & pi, int x, int y, latexkeys const * sym)
+{
+       LASSERT((bool)sym, return);
+       //lyxerr << "drawing: symbol: '" << sym->name
+       //      << "' in font: '" << sym->inset
+       //      << "' drawn as: '" << sym->draw
+       //      << "'" << endl;
+
+       bool const italic_upcase_greek = sym->inset == "cmr" &&
+               sym->extra == "mathalpha" &&
+               pi.base.fontname == "mathit";
+       std::string const font = italic_upcase_greek ? "cmm" : sym->inset;
+       if (sym->extra == "mathbin")
+               x += mathed_medmuskip(pi.base.font);
+       else if (sym->extra == "mathrel")
+               x += mathed_thickmuskip(pi.base.font);
+
+       Changer dummy = pi.base.changeFontSet(font);
+       pi.draw(x, y, sym->draw);
+}
+
+
 void metricsStrRedBlack(MetricsInfo & mi, Dimension & dim, docstring const & str)
 {
        FontInfo font = mi.base.font;
@@ -708,6 +755,7 @@ FontShape  const inh_shape  = INHERIT_SHAPE;
 // does not work
 fontinfo fontinfos[] = {
        // math fonts
+       // Color_math determines which fonts are math (see isMathFont)
        {"mathnormal",    ROMAN_FAMILY, MEDIUM_SERIES,
                          ITALIC_SHAPE, Color_math},
        {"mathbf",        inh_family, BOLD_SERIES,