InsetMathFrac.cpp: add some comments and remove an unused code line

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@29147 a592a061-630c-0410-9148-cb99ea01b6c8

diff --git a/src/mathed/InsetMathFrac.cpp b/src/mathed/InsetMathFrac.cpp
index 6d10da98470ae7e4f1063579e2645f9881d68630..cffc1d76deacabf7f87704d26f4d4ded25a0684c 100644 (file)
--- a/src/mathed/InsetMathFrac.cpp
+++ b/src/mathed/InsetMathFrac.cpp
@@ -147,12 +147,13 @@ void InsetMathFrac::metrics(MetricsInfo & mi, Dimension & dim) const
                        dim.des = max(dim2.des, dim1.height() - 5);
                }
        } else {
+               // general cell metrics used for \frac
                FracChanger dummy(mi.base);
                cell(0).metrics(mi, dim0);
                cell(1).metrics(mi, dim1);
                if (nargs() == 3)
                        cell(2).metrics(mi, dim2);
-
+               // metrics for special fraction types
                if (kind_ == NICEFRAC) {
                        dim.wid = dim0.width() + dim1.wid + 5;
                        dim.asc = dim0.height() + 5;
@@ -165,7 +166,7 @@ void InsetMathFrac::metrics(MetricsInfo & mi, Dimension & dim) const
                } else {
                        if (kind_ == CFRAC || kind_ == CFRACLEFT
                        || kind_ == CFRACRIGHT || kind_ == DFRAC) {
-                               // \cfrac and \dfrac are in always in display size
+                               // \cfrac and \dfrac are always in display size
                                StyleChanger dummy2(mi.base, LM_ST_DISPLAY);
                                cell(0).metrics(mi, dim0);
                                cell(1).metrics(mi, dim1);
@@ -189,7 +190,6 @@ void InsetMathFrac::draw(PainterInfo & pi, int x, int y) const
        setPosCache(pi, x, y);
        Dimension const dim = dimension(*pi.base.bv);
        Dimension const dim0 = cell(0).dimension(*pi.base.bv);
-       int m = x + dim.wid / 2;
        if (kind_ == UNIT || (kind_ == UNITFRAC && nargs() == 3)) {
                if (nargs() == 1) {
                        ShapeChanger dummy2(pi.base.font, UP_SHAPE);