* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
- * \author André Pönitz
+ * \author André Pönitz
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "InsetMathStackrel.h"
+
#include "MathData.h"
#include "MathStream.h"
+#include "Cursor.h"
+#include "LaTeXFeatures.h"
+#include "MetricsInfo.h"
+
+#include "support/lassert.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
+{
+ idx_type const npos = 1234; // impossible number
+ idx_type target = npos;
+ if (up) {
+ idx_type const targets[] = { 1, npos, 0 };
+ target = targets[cur.idx()];
+ } else {
+ idx_type const targets[] = { 2, 0, npos };
+ target = targets[cur.idx()];
+ }
+
+ if (target == npos || target == nargs())
+ return false;
+ cur.idx() = target;
+ cur.pos() = cell(target).x2pos(&cur.bv(), cur.x_target());
+ return true;
+}
+
+
+bool InsetMathStackrel::idxFirst(Cursor & cur) const
+{
+ LASSERT(&cur.inset() == this, return false);
+ cur.idx() = 0;
+ cur.pos() = 0;
+ return true;
+}
+
+
+bool InsetMathStackrel::idxLast(Cursor & cur) const
+{
+ LASSERT(&cur.inset() == this, return false);
+ cur.idx() = 0;
+ cur.pos() = cur.lastpos();
+ return true;
+}
+
+
+MathClass InsetMathStackrel::mathClass() const
+{
+ // FIXME: update this when/if \stackbin is supported
+ return MC_REL;
+}
+
+
void InsetMathStackrel::metrics(MetricsInfo & mi, Dimension & dim) const
{
- Dimension dim1;
- cell(1).metrics(mi, dim1);
- FracChanger dummy(mi.base);
+ Changer dummy2 = mi.base.changeEnsureMath();
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();
- metricsMarkers(dim);
- // Cache the inset dimension.
- setDimCache(mi, dim);
+ Changer dummy = mi.base.changeScript();
+ Dimension dim1;
+ cell(1).metrics(mi, dim1);
+ if (nargs() > 2) {
+ Dimension dim2;
+ cell(2).metrics(mi, dim2);
+ dim.wid = max(max(dim1.width(), dim0.width()), dim2.width()) + 4;
+ dim.asc = dim0.ascent() + dim1.height() + 4;
+ dim.des = dim0.descent() + dim2.height() + dim2.descent() + 1;
+ } else {
+ dim.wid = max(dim1.width(), dim0.width()) + 4;
+ dim.asc = dim0.ascent() + dim1.height() + 4;
+ dim.des = dim0.descent();
+ }
}
void InsetMathStackrel::draw(PainterInfo & pi, int x, int y) const
{
+ Changer dummy2 = pi.base.changeEnsureMath();
Dimension const dim = dimension(*pi.base.bv);
Dimension const & dim0 = cell(0).dimension(*pi.base.bv);
Dimension const & dim1 = cell(1).dimension(*pi.base.bv);
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);
- cell(0).draw(pi, m - dim0.width() / 2, yo);
- drawMarkers(pi, x, y);
+ int yo = y - dim0.ascent() - dim1.descent() - 1;
+ cell(0).draw(pi, m - dim0.width() / 2, y);
+ Changer dummy = pi.base.changeScript();
+ cell(1).draw(pi, m - dim1.width() / 2, yo);
+ if (nargs() > 2) {
+ Dimension const & dim2 = cell(2).dimension(*pi.base.bv);
+ int y2 = y + dim0.descent() + dim2.ascent() + 1;
+ cell(2).draw(pi, m - dim2.width() / 2, y2);
+ }
}
-void InsetMathStackrel::write(WriteStream & os) const
+void InsetMathStackrel::write(TeXMathStream & os) const
{
- os << "\\stackrel{" << cell(0) << "}{" << cell(1) << '}';
+ MathEnsurer ensurer(os);
+ os << "\\stackrel";
+ if (nargs() > 2)
+ os << '[' << cell(2) << ']';
+ os << '{' << cell(1) << "}{" << cell(0) << '}';
}
void InsetMathStackrel::normalize(NormalStream & os) const
{
- os << "[stackrel " << cell(0) << ' ' << cell(1) << ']';
+ os << "[stackrel " << cell(1) << ' ' << cell(0);
+ if (nargs() > 2)
+ os << ' ' << cell(2);
+ os << ']';
}
+void InsetMathStackrel::mathmlize(MathMLStream & ms) const
+{
+ if (nargs() > 2)
+ ms << "<" << from_ascii(ms.namespacedTag("munderover")) << ">"
+ << cell(0) << cell(2) << cell(1)
+ << "</" << from_ascii(ms.namespacedTag("munderover")) << ">";
+ else
+ ms << "<" << from_ascii(ms.namespacedTag("mover")) << " accent='false'>"
+ << cell(0) << cell(1)
+ << "</" << from_ascii(ms.namespacedTag("mover")) << ">";
+}
+
+
+void InsetMathStackrel::htmlize(HtmlStream & os) const
+{
+ if (nargs() > 2) {
+ os << MTag("span", "class='underoverset'")
+ << MTag("span", "class='top'") << cell(1) << ETag("span")
+ << MTag("span") << cell(0) << 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(1) << ETag("span")
+ << MTag("span") << cell(0) << 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
projects / lyx.git / blobdiff