Implement variable size bigops

[features.git] / src / mathed / InsetMathSymbol.cpp

diff --git a/src/mathed/InsetMathSymbol.cpp b/src/mathed/InsetMathSymbol.cpp
index 8e98db747ed19a5536a9845c88f2991124788195..d354d016a5d0cce4f7e48f3e9fd42d90542e5cbb 100644 (file)
--- a/src/mathed/InsetMathSymbol.cpp
+++ b/src/mathed/InsetMathSymbol.cpp
@@ -60,17 +60,32 @@ docstring InsetMathSymbol::name() const
 
 void InsetMathSymbol::metrics(MetricsInfo & mi, Dimension & dim) const
 {
-       // set dim
        mathedSymbolDim(mi.base, dim, sym_);
-       // set kerning_
-       kerning_ = mathed_char_kerning(mi.base.font, *sym_->draw.rbegin());
-       // correct height for broken cmex and wasy font
-       if (sym_->inset == "cmex" || sym_->inset == "wasy") {
-               h_ = 4 * dim.des / 5;
+       if (sym_->draw != sym_->name) {
+               // set dim
+               // FIXME: this should depend on BufferView
+               // set kerning_
+               kerning_ = mathed_char_kerning(mi.base.font,
+                                              mathedSymbol(mi.base, sym_).back());
+
+               // align character vertically
+               // FIXME: this should depend on BufferView
+               h_ = 0;
+               if (mathClass() == MC_OP) {
+                       // center the symbol around the fraction axis
+                       // See rule 13 of Appendix G of the TeXbook.
+                       h_ = axis_height(mi.base) + (dim.des - dim.asc) / 2;
+               } else if (sym_->inset == "wasy") {
+                       // correct height for broken wasy font
+                       h_ = 4 * dim.des / 5;
+               }
                dim.asc += h_;
                dim.des -= h_;
        }
+
        // set scriptable_
+       //FIXME: get rid of that? Only "funclim" probably, along with
+       // class==MC_OP. The issue is to implement \limits properly.
        scriptable_ = false;
        if (mi.base.font.style() == DISPLAY_STYLE)
                if (sym_->inset == "cmex" || sym_->inset == "esint" ||