#include <config.h>
#include "InsetMathStackrel.h"
+
#include "MathData.h"
#include "MathStream.h"
+#include "Cursor.h"
+#include "LaTeXFeatures.h"
+#include "MetricsInfo.h"
+
using namespace std;
namespace lyx {
-InsetMathStackrel::InsetMathStackrel()
+InsetMathStackrel::InsetMathStackrel(Buffer * buf, bool sub)
+ : InsetMathFracBase(buf, sub ? 3 : 2)
{}
}
+bool InsetMathStackrel::idxUpDown(Cursor & cur, bool up) const
+{
+ if (up) {
+ if (cur.idx() == 0)
+ return false;
+ } else {
+ if (cur.idx() + 1 == nargs())
+ return false;
+ }
+ InsetMath::idx_type target = up ? cur.idx() - 1 : cur.idx() + 1;
+ if (cur.idx() == target)
+ return false;
+ cur.idx() = target;
+ cur.pos() = cell(target).x2pos(&cur.bv(), cur.x_target());
+ return true;
+}
+
+
void InsetMathStackrel::metrics(MetricsInfo & mi, Dimension & dim) const
{
Dimension dim1;
cell(1).metrics(mi, dim1);
- FracChanger dummy(mi.base);
+ Changer dummy = mi.base.changeFrac();
Dimension dim0;
cell(0).metrics(mi, dim0);
- dim.wid = max(dim0.width(), dim1.width()) + 4;
- dim.asc = dim1.ascent() + dim0.height() + 4;
- dim.des = dim1.descent();
+ if (nargs() > 2) {
+ Dimension dim2;
+ cell(2).metrics(mi, dim2);
+ dim.wid = max(max(dim0.width(), dim1.width()), dim2.width()) + 4;
+ dim.asc = dim1.ascent() + dim0.height() + 4;
+ dim.des = dim1.descent() + dim2.height() + dim2.descent() + 1;
+ } else {
+ dim.wid = max(dim0.width(), dim1.width()) + 4;
+ dim.asc = dim1.ascent() + dim0.height() + 4;
+ dim.des = dim1.descent();
+ }
metricsMarkers(dim);
}
int m = x + dim.width() / 2;
int yo = y - dim1.ascent() - dim0.descent() - 1;
cell(1).draw(pi, m - dim1.width() / 2, y);
- FracChanger dummy(pi.base);
+ Changer dummy = pi.base.changeFrac();
cell(0).draw(pi, m - dim0.width() / 2, yo);
+ if (nargs() > 2) {
+ Dimension const & dim2 = cell(2).dimension(*pi.base.bv);
+ int y2 = y + dim1.descent() + dim2.ascent() + 1;
+ cell(2).draw(pi, m - dim2.width() / 2, y2);
+ }
drawMarkers(pi, x, y);
}
void InsetMathStackrel::write(WriteStream & os) const
{
MathEnsurer ensurer(os);
- os << "\\stackrel{" << cell(0) << "}{" << cell(1) << '}';
+ os << "\\stackrel";
+ if (nargs() > 2)
+ os << '[' << cell(2) << ']';
+ os << '{' << cell(0) << "}{" << cell(1) << '}';
}
void InsetMathStackrel::normalize(NormalStream & os) const
{
- os << "[stackrel " << cell(0) << ' ' << cell(1) << ']';
+ os << "[stackrel " << cell(0) << ' ' << cell(1);
+ if (nargs() > 2)
+ os << ' ' << cell(2);
+ os << ']';
}
+void InsetMathStackrel::mathmlize(MathStream & ms) const
+{
+ if (nargs() > 2)
+ ms << "<munderover>" << cell(1) << cell(2) << cell(0) << "</munderover>";
+ else
+ ms << "<mover accent='false'>" << cell(1) << cell(0) << "</mover>";
+}
+
+
+void InsetMathStackrel::htmlize(HtmlStream & os) const
+{
+ if (nargs() > 2) {
+ os << MTag("span", "class='underoverset'")
+ << MTag("span", "class='top'") << cell(0) << ETag("span")
+ << MTag("span") << cell(1) << ETag("span")
+ << MTag("span", "class='bottom'") << cell(2) << ETag("span");
+ } else {
+ // at the moment, this is exactly the same as overset
+ os << MTag("span", "class='overset'")
+ << MTag("span", "class='top'") << cell(0) << ETag("span")
+ << MTag("span") << cell(1) << ETag("span");
+ }
+ os << ETag("span");
+}
+
+
+void InsetMathStackrel::validate(LaTeXFeatures & features) const
+{
+ if (features.runparams().math_flavor == OutputParams::MathAsHTML) {
+ if (nargs() > 2) {
+ // FIXME: "vertical-align: middle" works only if the
+ // height of sub and super script is approximately equal.
+ features.addCSSSnippet(
+ "span.underoverset{display: inline-block; vertical-align: middle; text-align:center;}\n"
+ "span.underoverset span {display: block;}\n"
+ "span.bottom{font-size: 66%;}\n"
+ "span.top{font-size: 66%;}");
+ } else {
+ // from overset
+ features.addCSSSnippet(
+ "span.overset{display: inline-block; vertical-align: bottom; text-align:center;}\n"
+ "span.overset span {display: block;}\n"
+ "span.top{font-size: 66%;}");
+ }
+ }
+ if (nargs() > 2)
+ features.require("stackrel");
+
+ InsetMathNest::validate(features);
+}
+
} // namespace lyx