#include <config.h>
+#include "InsetMathScript.h"
+
+#include "InsetMathBrace.h"
+#include "InsetMathSymbol.h"
+#include "MathData.h"
+#include "MathStream.h"
+#include "MathSupport.h"
+
#include "BufferView.h"
#include "Cursor.h"
#include "DispatchResult.h"
#include "FuncRequest.h"
#include "FuncStatus.h"
-#include "InsetMathBrace.h"
-#include "InsetMathFont.h"
-#include "InsetMathScript.h"
-#include "InsetMathSymbol.h"
#include "LaTeXFeatures.h"
-#include "MathData.h"
-#include "MathStream.h"
-#include "MathSupport.h"
+#include "MetricsInfo.h"
#include "support/debug.h"
-
+#include "support/gettext.h"
#include "support/lassert.h"
-#include <ostream>
using namespace std;
InsetMathScript::InsetMathScript(Buffer * buf, MathAtom const & at, bool up)
: InsetMathNest(buf, 2), cell_1_is_up_(up), limits_(0)
{
- LASSERT(nargs() >= 1, /**/);
+ LATTEST(nargs() >= 1);
cell(0).push_back(at);
}
{
if (nargs() == 3)
return cell(2);
- LASSERT(nargs() > 1, /**/);
+ LBUFERR(nargs() > 1);
return cell(1);
}
{
if (nargs() == 3)
return cell(2);
- LASSERT(nargs() > 1, /**/);
+ LBUFERR(nargs() > 1);
return cell(1);
}
MathData const & InsetMathScript::up() const
{
- LASSERT(nargs() > 1, /**/);
+ LBUFERR(nargs() > 1);
return cell(1);
}
MathData & InsetMathScript::up()
{
- LASSERT(nargs() > 1, /**/);
+ LBUFERR(nargs() > 1);
return cell(1);
}
}
-namespace {
-
-bool isAlphaSymbol(MathAtom const & at)
-{
- if (at->asCharInset() ||
- (at->asSymbolInset() &&
- at->asSymbolInset()->isOrdAlpha()))
- return true;
-
- if (at->asFontInset()) {
- MathData const & ar = at->asFontInset()->cell(0);
- for (size_t i = 0; i < ar.size(); ++i) {
- if (!(ar[i]->asCharInset() ||
- (ar[i]->asSymbolInset() &&
- ar[i]->asSymbolInset()->isOrdAlpha())))
- return false;
- }
- return true;
- }
- return false;
-}
-
-} // namespace anon
-
-
int InsetMathScript::dy01(BufferView const & bv, int asc, int des, int what) const
{
int dasc = 0;
int InsetMathScript::dx0(BufferView const & bv) const
{
- LASSERT(hasDown(), /**/);
+ 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);
}
int InsetMathScript::dx1(BufferView const & bv) const
{
- LASSERT(hasUp(), /**/);
+ 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);
}
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;
}
+MathClass InsetMathScript::mathClass() const
+{
+ // FIXME: this is a hack, since the class will not be correct if
+ // 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 {
+ // return the class of last element since this is the one that counts.
+ 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;
cell(0).metrics(mi, dim0);
- ScriptChanger dummy(mi.base);
+ Changer dummy = mi.base.changeScript();
if (nargs() > 1)
- cell(1).metrics(mi, dim1);
+ cell(1).metrics(mi, dim1, !hasLimits());
if (nargs() > 2)
- cell(2).metrics(mi, dim2);
+ cell(2).metrics(mi, dim2, !hasLimits());
dim.wid = 0;
BufferView & bv = *mi.base.bv;
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);
dim.des = max(nd, des);
} else
dim.des = nd;
- metricsMarkers(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);
if (editing(&bv))
pi.draw(x + dxx(bv), y, char_type('.'));
}
- ScriptChanger dummy(pi.base);
+ Changer dummy = pi.base.changeScript();
if (hasUp())
up().draw(pi, x + dx1(bv), y - dy1(bv));
if (hasDown())
down().draw(pi, x + dx0(bv), y + dy0(bv));
- drawMarkers(pi, x, y);
}
}
+// 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;
return (cell_1_is_up_ == up) ? 1 : 0;
if (nargs() == 3)
return up ? 1 : 2;
- LASSERT(false, /**/);
- // Silence compiler
- return 0;
+ LASSERT(false, return 0);
}
}
-// FIXME XHTML
-// It may be worth trying to output munder, mover, and munderover
-// in certain cases, e.g., for display formulas. But then we would
-// need to know if we're in a display formula.
void InsetMathScript::mathmlize(MathStream & os) const
{
bool d = hasDown() && !down().empty();
bool u = hasUp() && !up().empty();
+ bool l = hasLimits();
if (u && d)
- os << MTag("msubsup");
+ os << MTag(l ? "munderover" : "msubsup");
else if (u)
- os << MTag("msup");
+ os << MTag(l ? "mover" : "msup");
else if (d)
- os << MTag("msub");
+ os << MTag(l ? "munder" : "msub");
if (!nuc().empty())
os << MTag("mrow") << nuc() << ETag("mrow");
os << "<mrow />";
if (u && d)
- os << MTag("mrow") << down() << ETag("mrow")
- << MTag("mrow") << up() << ETag("mrow")
- << ETag("msubsup");
+ os << MTag("mrow") << down() << ETag("mrow")
+ << MTag("mrow") << up() << ETag("mrow")
+ << ETag(l ? "munderover" : "msubsup");
else if (u)
- os << MTag("mrow") << up() << ETag("mrow") << ETag("msup");
+ os << MTag("mrow") << up() << ETag("mrow") << ETag(l ? "mover" : "msup");
else if (d)
- os << MTag("mrow") << down() << ETag("mrow") << ETag("msub");
+ os << MTag("mrow") << down() << ETag("mrow") << ETag(l ? "munder" : "msub");
}
//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;
}
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