Fix test to make coverity happy

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

diff --git a/src/mathed/InsetMathScript.cpp b/src/mathed/InsetMathScript.cpp
index 7363c885545aebd68a0271fe462265ac17e3e395..fc72b6b078e1052002cd045701c607767e57ac40 100644 (file)
--- a/src/mathed/InsetMathScript.cpp
+++ b/src/mathed/InsetMathScript.cpp
@@ -226,7 +226,8 @@ int InsetMathScript::dx0(BufferView const & bv) const
 {
        LASSERT(hasDown(), return 0);
        Dimension const dim = dimension(bv);
-       return hasLimits() ? (dim.wid - down().dimension(bv).width()) / 2 : nwid(bv);
+       return hasLimits() ? (dim.wid - down().dimension(bv).width()) / 2
+               : nwid(bv) + min(nker(&bv), 0);
 }
 
 
@@ -234,7 +235,8 @@ int InsetMathScript::dx1(BufferView const & bv) const
 {
        LASSERT(hasUp(), return 0);
        Dimension const dim = dimension(bv);
-       return hasLimits() ? (dim.wid - up().dimension(bv).width()) / 2 : nwid(bv) + nker(&bv);
+       return hasLimits() ? (dim.wid - up().dimension(bv).width()) / 2
+               : nwid(bv) + max(nker(&bv), 0);
 }
 
 
@@ -265,10 +267,8 @@ int InsetMathScript::ndes(BufferView const & bv) const
 
 int InsetMathScript::nker(BufferView const * bv) const
 {
-       if (!nuc().empty()) {
-               int kerning = nuc().kerning(bv);
-               return kerning > 0 ? kerning : 0;
-       }
+       if (!nuc().empty())
+               return nuc().kerning(bv);
        return 0;
 }
 
@@ -276,18 +276,22 @@ int InsetMathScript::nker(BufferView const * bv) const
 MathClass InsetMathScript::mathClass() const
 {
        // FIXME: this is a hack, since the class will not be correct if
-       // the nucleus has several elements.
+       // the nucleus has several elements or if the last element is a math macro
+       // or a macro argument proxy.
        // The correct implementation would require to linearize the nucleus.
        if (nuc().empty())
                return MC_ORD;
-       else
+       else {
                // return the class of last element since this is the one that counts.
-               return nuc().back()->mathClass();
+               MathClass mc = nuc().back()->mathClass();
+               return (mc == MC_UNKNOWN) ? MC_ORD : mc;
+       }
 }
 
 
 void InsetMathScript::metrics(MetricsInfo & mi, Dimension & dim) const
 {
+       Changer dummy2 = mi.base.changeEnsureMath();
        Dimension dim0;
        Dimension dim1;
        Dimension dim2;
@@ -316,9 +320,9 @@ void InsetMathScript::metrics(MetricsInfo & mi, Dimension & dim) const
                        dim.wid = max(dim.wid, dimdown.width());
        } else {
                if (hasUp())
-                       dim.wid = max(dim.wid, nker(mi.base.bv) + dimup.width());
+                       dim.wid = max(dim.wid, max(nker(mi.base.bv), 0) + dimup.width());
                if (hasDown())
-                       dim.wid = max(dim.wid, dimdown.width());
+                       dim.wid = max(dim.wid, min(nker(mi.base.bv), 0) + dimdown.width());
                dim.wid += nwid(bv);
        }
        int na = nasc(bv);
@@ -333,12 +337,12 @@ void InsetMathScript::metrics(MetricsInfo & mi, Dimension & dim) const
                dim.des = max(nd, des);
        } else
                dim.des = nd;
-       metricsMarkers(mi, dim);
 }
 
 
 void InsetMathScript::draw(PainterInfo & pi, int x, int y) const
 {
+       Changer dummy2 = pi.base.changeEnsureMath();
        BufferView & bv = *pi.base.bv;
        if (!nuc().empty())
                nuc().draw(pi, x + dxx(bv), y);
@@ -352,7 +356,6 @@ void InsetMathScript::draw(PainterInfo & pi, int x, int y) const
                up().draw(pi, x + dx1(bv), y - dy1(bv));
        if (hasDown())
                down().draw(pi, x + dx0(bv), y + dy0(bv));
-       drawMarkers(pi, x, y);
 }