}
+MathClass InsetMathDecoration::mathClass() const
+{
+ if (key_->name == "overbrace" || key_->name == "underbrace")
+ return MC_OP;
+ return MC_ORD;
+}
+
+
bool InsetMathDecoration::isScriptable() const
{
- return
- key_->name == "overbrace" ||
- key_->name == "underbrace";
+ return mathClass() == MC_OP;
}
}
+// FIXME: See InsetMathSymbol::takesLimits, which seems to attempt the
+// same in a hardcoded way. takeLimits use is currently commented out in
+// InsetMathScript::metrics. It seems that the mathop test is general
+// enough, but only time will tell.
+bool InsetMathScript::allowsLimits() const
+{
+ if (nuc().empty())
+ return false;
+ // Only makes sense for insets of mathop class
+ if (nuc().back()->mathClass() != MC_OP)
+ return false;
+ return true;
+}
+
bool InsetMathScript::hasLimits() const
{
return false;
// we can only display limits if the nucleus wants some
- if (nuc().empty())
+ if (!allowsLimits())
return false;
+ // FIXME: this is some hardcoding done in InsetMathSymbol::metrics.
if (!nuc().back()->isScriptable())
return false;
//LYXERR("InsetMathScript: request: " << cmd);
if (cmd.action() == LFUN_MATH_LIMITS) {
+ // only when nucleus allows this
+ if (!allowsLimits())
+ return;
cur.recordUndoInset();
if (!cmd.argument().empty()) {
if (cmd.argument() == "limits")
FuncStatus & flag) const
{
if (cmd.action() == LFUN_MATH_LIMITS) {
- if (!cmd.argument().empty()) {
- if (cmd.argument() == "limits")
- flag.setOnOff(limits_ == 1);
- else if (cmd.argument() == "nolimits")
- flag.setOnOff(limits_ == -1);
- else
- flag.setOnOff(limits_ == 0);
- }
- flag.setEnabled(true);
+ // only when nucleus allows this
+ if (allowsLimits()) {
+ if (!cmd.argument().empty()) {
+ if (cmd.argument() == "limits")
+ flag.setOnOff(limits_ == 1);
+ else if (cmd.argument() == "nolimits")
+ flag.setOnOff(limits_ == -1);
+ else
+ flag.setOnOff(limits_ == 0);
+ }
+ flag.setEnabled(true);
+ } else
+ flag.setEnabled(false);
return true;
}
/// shifts the superscript to the right, and a negative value shifts the
/// subscript to the left.
int nker(BufferView const * bv) const;
+ /// can one change how scripts are drawn?
+ bool allowsLimits() const;
/// where do we have to draw the scripts?
bool hasLimits() const;
/// clean up empty cells and return true if a cell has been deleted.