X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Fmathed%2FInsetMathFrac.cpp;h=6a175fad31ac26e0568c24684ef557917ee5a5c9;hb=e1d9ad9f2802875bc233122e14c8d273a95dd1ed;hp=4f95377d1bee2789e5a80610afed1800c4e8fdc5;hpb=237c132c1e6fc720b87f2fea6deb18a8395cbe0a;p=lyx.git diff --git a/src/mathed/InsetMathFrac.cpp b/src/mathed/InsetMathFrac.cpp index 4f95377d1b..6a175fad31 100644 --- a/src/mathed/InsetMathFrac.cpp +++ b/src/mathed/InsetMathFrac.cpp @@ -1,10 +1,11 @@ /** - * \file InsetMathFrac.cpp + * \file InsetMathFracBase.cpp * This file is part of LyX, the document processor. * Licence details can be found in the file COPYING. * * \author Alejandro Aguilar Sierra - * \author André Pönitz + * \author André Pönitz + * \author Uwe Stöhr * * Full author contact details are available in file CREDITS. */ @@ -12,19 +13,57 @@ #include #include "InsetMathFrac.h" + +#include "Cursor.h" +#include "LaTeXFeatures.h" #include "MathData.h" #include "MathStream.h" +#include "MathSupport.h" +#include "MetricsInfo.h" #include "TextPainter.h" -#include "LaTeXFeatures.h" -#include "Color.h" -#include "Cursor.h" + +#include "support/lassert.h" #include "frontends/Painter.h" +using namespace std; namespace lyx { -InsetMathFrac::InsetMathFrac(Kind kind, InsetMath::idx_type ncells) - : InsetMathFracBase(ncells), kind_(kind) +///////////////////////////////////////////////////////////////////// +// +// InsetMathFracBase +// +///////////////////////////////////////////////////////////////////// + + +InsetMathFracBase::InsetMathFracBase(Buffer * buf, idx_type ncells) + : InsetMathNest(buf, ncells) +{} + + +bool InsetMathFracBase::idxUpDown(Cursor & cur, bool up) const +{ + // If we only have one cell, target = 0, otherwise + // target = up ? 0 : 1, since upper cell has idx 0 + InsetMath::idx_type target = nargs() > 1 ? !up : 0; + if (cur.idx() == target) + return false; + cur.idx() = target; + cur.pos() = cell(target).x2pos(&cur.bv(), cur.x_target()); + return true; +} + + + +///////////////////////////////////////////////////////////////////// +// +// InsetMathFrac +// +///////////////////////////////////////////////////////////////////// + + +InsetMathFrac::InsetMathFrac(Buffer * buf, Kind kind, InsetMath::idx_type ncells) + : InsetMathFracBase(buf, ncells), kind_(kind) {} @@ -46,178 +85,220 @@ InsetMathFrac const * InsetMathFrac::asFracInset() const } -bool InsetMathFrac::idxRight(Cursor & cur) const +bool InsetMathFrac::idxForward(Cursor & cur) const { - InsetMath::idx_type target; + InsetMath::idx_type target = 0; if (kind_ == UNIT || (kind_ == UNITFRAC && nargs() == 3)) { if (nargs() == 3) target = 0; else if (nargs() == 2) target = 1; } else - return false; + return false; if (cur.idx() == target) return false; cur.idx() = target; - cur.pos() = cell(target).x2pos(cur.x_target()); + cur.pos() = cell(target).x2pos(&cur.bv(), cur.x_target()); return true; } -bool InsetMathFrac::idxLeft(Cursor & cur) const +bool InsetMathFrac::idxBackward(Cursor & cur) const { - InsetMath::idx_type target; + InsetMath::idx_type target = 0; if (kind_ == UNIT || (kind_ == UNITFRAC && nargs() == 3)) { if (nargs() == 3) target = 2; else if (nargs() == 2) target = 0; } else - return false; + return false; if (cur.idx() == target) return false; cur.idx() = target; - cur.pos() = cell(target).x2pos(cur.x_target()); + cur.pos() = cell(target).x2pos(&cur.bv(), cur.x_target()); return true; } void InsetMathFrac::metrics(MetricsInfo & mi, Dimension & dim) const { + Dimension dim0, dim1, dim2; + if (kind_ == UNIT || (kind_ == UNITFRAC && nargs() == 3)) { if (nargs() == 1) { - ShapeChanger dummy2(mi.base.font, Font::UP_SHAPE); - cell(0).metrics(mi); - dim.wid = cell(0).width()+ 3; - dim.asc = cell(0).ascent(); - dim.des = cell(0).descent(); + ShapeChanger dummy2(mi.base.font, UP_SHAPE); + cell(0).metrics(mi, dim0); + dim.wid = dim0.width()+ 3; + dim.asc = dim0.asc; + dim.des = dim0.des; } else if (nargs() == 2) { - cell(0).metrics(mi); - ShapeChanger dummy2(mi.base.font, Font::UP_SHAPE); - cell(1).metrics(mi); - dim.wid = cell(0).width() + cell(1).width() + 5; - dim.asc = std::max(cell(0).ascent(), cell(1).ascent()); - dim.des = std::max(cell(0).descent(), cell(1).descent()); + cell(0).metrics(mi, dim0); + ShapeChanger dummy2(mi.base.font, UP_SHAPE); + cell(1).metrics(mi, dim1); + dim.wid = dim0.width() + dim1.wid + 5; + dim.asc = max(dim0.asc, dim1.asc); + dim.des = max(dim0.des, dim1.des); } else { - cell(2).metrics(mi); - ShapeChanger dummy2(mi.base.font, Font::UP_SHAPE); + cell(2).metrics(mi, dim2); + ShapeChanger dummy2(mi.base.font, UP_SHAPE); FracChanger dummy(mi.base); - cell(0).metrics(mi); - cell(1).metrics(mi); - dim.wid = cell(0).width() + cell(1).width() + cell(2).width() + 10; - dim.asc = std::max(cell(2).ascent(), cell(0).height() + 5); - dim.des = std::max(cell(2).descent(), cell(1).height() - 5); + cell(0).metrics(mi, dim0); + cell(1).metrics(mi, dim1); + dim.wid = dim0.width() + dim1.wid + dim2.wid + 10; + dim.asc = max(dim2.asc, dim0.height() + 5); + dim.des = max(dim2.des, dim1.height() - 5); } } else { + // general cell metrics used for \frac FracChanger dummy(mi.base); - cell(0).metrics(mi); - cell(1).metrics(mi); + cell(0).metrics(mi, dim0); + cell(1).metrics(mi, dim1); + if (nargs() == 3) + cell(2).metrics(mi, dim2); + // metrics for special fraction types if (kind_ == NICEFRAC) { - dim.wid = cell(0).width() + cell(1).width() + 5; - dim.asc = cell(0).height() + 5; - dim.des = cell(1).height() - 5; + dim.wid = dim0.width() + dim1.wid + 5; + dim.asc = dim0.height() + 5; + dim.des = dim1.height() - 5; } else if (kind_ == UNITFRAC) { - ShapeChanger dummy2(mi.base.font, Font::UP_SHAPE); - dim.wid = cell(0).width() + cell(1).width() + 5; - dim.asc = cell(0).height() + 5; - dim.des = cell(1).height() - 5; + ShapeChanger dummy2(mi.base.font, UP_SHAPE); + dim.wid = dim0.width() + dim1.wid + 5; + dim.asc = dim0.height() + 5; + dim.des = dim1.height() - 5; } else { - dim.wid = std::max(cell(0).width(), cell(1).width()) + 2; - dim.asc = cell(0).height() + 2 + 5; - dim.des = cell(1).height() + 2 - 5; + if (kind_ == CFRAC || kind_ == CFRACLEFT + || kind_ == CFRACRIGHT || kind_ == DFRAC) { + // \cfrac and \dfrac are always in display size + StyleChanger dummy2(mi.base, LM_ST_DISPLAY); + cell(0).metrics(mi, dim0); + cell(1).metrics(mi, dim1); + } else if (kind_ == TFRAC) { + // tfrac is in always in text size + StyleChanger dummy2(mi.base, LM_ST_SCRIPT); + cell(0).metrics(mi, dim0); + cell(1).metrics(mi, dim1); + } + dim.wid = max(dim0.wid, dim1.wid) + 2; + dim.asc = dim0.height() + 2 + 5; + dim.des = dim1.height() + 2 - 5; } } metricsMarkers(dim); - dim_ = dim; } void InsetMathFrac::draw(PainterInfo & pi, int x, int y) const { setPosCache(pi, x, y); - int m = x + dim_.wid / 2; + Dimension const dim = dimension(*pi.base.bv); + Dimension const dim0 = cell(0).dimension(*pi.base.bv); if (kind_ == UNIT || (kind_ == UNITFRAC && nargs() == 3)) { if (nargs() == 1) { - ShapeChanger dummy2(pi.base.font, Font::UP_SHAPE); + ShapeChanger dummy2(pi.base.font, UP_SHAPE); cell(0).draw(pi, x + 1, y); } else if (nargs() == 2) { cell(0).draw(pi, x + 1, y); - ShapeChanger dummy2(pi.base.font, Font::UP_SHAPE); - cell(1).draw(pi, x + cell(0).width() + 5, y); + ShapeChanger dummy2(pi.base.font, UP_SHAPE); + cell(1).draw(pi, x + dim0.width() + 5, y); } else { cell(2).draw(pi, x + 1, y); - ShapeChanger dummy2(pi.base.font, Font::UP_SHAPE); + ShapeChanger dummy2(pi.base.font, UP_SHAPE); FracChanger dummy(pi.base); - int xx = x + cell(2).width() + 5; + Dimension const dim1 = cell(1).dimension(*pi.base.bv); + Dimension const dim2 = cell(2).dimension(*pi.base.bv); + int xx = x + dim2.wid + 5; cell(0).draw(pi, xx + 2, - y - cell(0).descent() - 5); - cell(1).draw(pi, xx + cell(0).width() + 5, - y + cell(1).ascent() / 2); + y - dim0.des - 5); + cell(1).draw(pi, xx + dim0.width() + 5, + y + dim1.asc / 2); } } else { FracChanger dummy(pi.base); + Dimension const dim1 = cell(1).dimension(*pi.base.bv); + int m = x + dim.wid / 2; if (kind_ == NICEFRAC) { cell(0).draw(pi, x + 2, - y - cell(0).descent() - 5); - cell(1).draw(pi, x + cell(0).width() + 5, - y + cell(1).ascent() / 2); + y - dim0.des - 5); + cell(1).draw(pi, x + dim0.width() + 5, + y + dim1.asc / 2); } else if (kind_ == UNITFRAC) { - ShapeChanger dummy2(pi.base.font, Font::UP_SHAPE); - cell(0).draw(pi, x + 2, - y - cell(0).descent() - 5); - cell(1).draw(pi, x + cell(0).width() + 5, - y + cell(1).ascent() / 2); + ShapeChanger dummy2(pi.base.font, UP_SHAPE); + cell(0).draw(pi, x + 2, y - dim0.des - 5); + cell(1).draw(pi, x + dim0.width() + 5, y + dim1.asc / 2); + } else if (kind_ == FRAC || kind_ == ATOP || kind_ == OVER) { + cell(0).draw(pi, m - dim0.wid / 2, y - dim0.des - 2 - 5); + cell(1).draw(pi, m - dim1.wid / 2, y + dim1.asc + 2 - 5); + } else if (kind_ == TFRAC) { + // tfrac is in always in text size + StyleChanger dummy2(pi.base, LM_ST_SCRIPT); + cell(0).draw(pi, m - dim0.wid / 2, y - dim0.des - 2 - 5); + cell(1).draw(pi, m - dim1.wid / 2, y + dim1.asc + 2 - 5); } else { - // Classical fraction - cell(0).draw(pi, m - cell(0).width() / 2, - y - cell(0).descent() - 2 - 5); - cell(1).draw(pi, m - cell(1).width() / 2, - y + cell(1).ascent() + 2 - 5); + // \cfrac and \dfrac are always in display size + StyleChanger dummy2(pi.base, LM_ST_DISPLAY); + if (kind_ == CFRAC || kind_ == DFRAC) + cell(0).draw(pi, m - dim0.wid / 2, y - dim0.des - 2 - 5); + else if (kind_ == CFRACLEFT) + cell(0).draw(pi, x + 2, y - dim0.des - 2 - 5); + else if (kind_ == CFRACRIGHT) + cell(0).draw(pi, x + dim.wid - dim0.wid - 2, + y - dim0.des - 2 - 5); + cell(1).draw(pi, m - dim1.wid / 2, y + dim1.asc + 2 - 5); } } if (kind_ == NICEFRAC || kind_ == UNITFRAC) { // Diag line: int xx = x; if (nargs() == 3) - xx += cell(2).width() + 5; - pi.pain.line(xx + cell(0).width(), - y + dim_.des - 2, - xx + cell(0).width() + 5, - y - dim_.asc + 2, Color::math); + xx += cell(2).dimension(*pi.base.bv).wid + 5; + pi.pain.line(xx + dim0.wid, + y + dim.des - 2, + xx + dim0.wid + 5, + y - dim.asc + 2, pi.base.font.color()); } - if (kind_ == FRAC || kind_ == OVER) + if (kind_ == FRAC || kind_ == CFRAC || kind_ == CFRACLEFT + || kind_ == CFRACRIGHT || kind_ == DFRAC + || kind_ == TFRAC || kind_ == OVER) pi.pain.line(x + 1, y - 5, - x + dim_.wid - 2, y - 5, Color::math); + x + dim.wid - 2, y - 5, pi.base.font.color()); drawMarkers(pi, x, y); } void InsetMathFrac::metricsT(TextMetricsInfo const & mi, Dimension & dim) const { - cell(0).metricsT(mi, dim); - cell(1).metricsT(mi, dim); - dim.wid = std::max(cell(0).width(), cell(1).width()); - dim.asc = cell(0).height() + 1; - dim.des = cell(1).height(); - //dim = dim_; + Dimension dim0, dim1; + cell(0).metricsT(mi, dim0); + cell(1).metricsT(mi, dim1); + dim.wid = max(dim0.width(), dim1.wid); + dim.asc = dim0.height() + 1; + dim.des = dim1.height(); } -void InsetMathFrac::drawT(TextPainter & pain, int x, int y) const +void InsetMathFrac::drawT(TextPainter & /*pain*/, int /*x*/, int /*y*/) const { - int m = x + dim_.width() / 2; - cell(0).drawT(pain, m - cell(0).width() / 2, y - cell(0).descent() - 1); - cell(1).drawT(pain, m - cell(1).width() / 2, y + cell(1).ascent()); + // FIXME: BROKEN! + /* + Dimension dim; + int m = x + dim.width() / 2; + cell(0).drawT(pain, m - dim0.width() / 2, y - dim0.des - 1); + cell(1).drawT(pain, m - dim1.wid / 2, y + dim1.asc); // ASCII art: ignore niceties if (kind_ == FRAC || kind_ == OVER || kind_ == NICEFRAC || kind_ == UNITFRAC) - pain.horizontalLine(x, y, dim_.width()); + pain.horizontalLine(x, y, dim.width()); + */ } void InsetMathFrac::write(WriteStream & os) const { + MathEnsurer ensurer(os); switch (kind_) { case ATOP: + // \\atop is only for compatibility, \\binom is the + // LaTeX2e successor os << '{' << cell(0) << "\\atop " << cell(1) << '}'; break; case OVER: @@ -225,7 +306,10 @@ void InsetMathFrac::write(WriteStream & os) const os << "\\frac{" << cell(0) << "}{" << cell(1) << '}'; break; case FRAC: + case DFRAC: + case TFRAC: case NICEFRAC: + case CFRAC: case UNITFRAC: if (nargs() == 2) InsetMathNest::write(os); @@ -238,6 +322,12 @@ void InsetMathFrac::write(WriteStream & os) const else os << "\\unit{" << cell(0) << '}'; break; + case CFRACLEFT: + os << "\\cfrac[l]{" << cell(0) << "}{" << cell(1) << '}'; + break; + case CFRACRIGHT: + os << "\\cfrac[r]{" << cell(0) << "}{" << cell(1) << '}'; + break; } } @@ -247,6 +337,14 @@ docstring InsetMathFrac::name() const switch (kind_) { case FRAC: return from_ascii("frac"); + case CFRAC: + case CFRACLEFT: + case CFRACRIGHT: + return from_ascii("cfrac"); + case DFRAC: + return from_ascii("dfrac"); + case TFRAC: + return from_ascii("tfrac"); case OVER: return from_ascii("over"); case NICEFRAC: @@ -271,25 +369,137 @@ bool InsetMathFrac::extraBraces() const void InsetMathFrac::maple(MapleStream & os) const { + if (nargs() != 2) { + // Someone who knows about maple should fix this. + LASSERT(false, return); + } os << '(' << cell(0) << ")/(" << cell(1) << ')'; } void InsetMathFrac::mathematica(MathematicaStream & os) const { + if (nargs() != 2) { + // Someone who knows about mathematica should fix this. + LASSERT(false, return); + } os << '(' << cell(0) << ")/(" << cell(1) << ')'; } void InsetMathFrac::octave(OctaveStream & os) const { + if (nargs() != 2) { + // Someone who knows about octave should fix this. + LASSERT(false, return); + } os << '(' << cell(0) << ")/(" << cell(1) << ')'; } void InsetMathFrac::mathmlize(MathStream & os) const { - os << MTag("mfrac") << cell(0) << cell(1) << ETag("mfrac"); + switch (kind_) { + case ATOP: + os << MTag("mfrac", "linethickeness='0'") + << MTag("mrow") << cell(0) << ETag("mrow") + << MTag("mrow") << cell(1) << ETag("mrow") + << ETag("mfrac"); + break; + + // we do not presently distinguish these + case OVER: + case FRAC: + case DFRAC: + case TFRAC: + case CFRAC: + case CFRACLEFT: + case CFRACRIGHT: + os << MTag("mfrac") + << MTag("mrow") << cell(0) << ETag("mrow") + << MTag("mrow") << cell(1) << ETag("mrow") + << ETag("mfrac"); + break; + + case NICEFRAC: + os << MTag("mfrac", "bevelled='true'") + << MTag("mrow") << cell(0) << ETag("mrow") + << MTag("mrow") << cell(1) << ETag("mrow") + << ETag("mfrac"); + break; + + case UNITFRAC: + if (nargs() == 3) + os << cell(2); + os << MTag("mfrac", "bevelled='true'") + << MTag("mrow") << cell(0) << ETag("mrow") + << MTag("mrow") << cell(1) << ETag("mrow") + << ETag("mfrac"); + break; + + case UNIT: + // FIXME This is not right, because we still output mi, etc, + // when we output the cell. So we need to prevent that somehow. + if (nargs() == 2) + os << cell(0) + << MTag("mstyle mathvariant='normal'") + << cell(1) + << ETag("mstyle"); + else + os << MTag("mstyle mathvariant='normal'") + << cell(0) + << ETag("mstyle"); + } +} + + +void InsetMathFrac::htmlize(HtmlStream & os) const +{ + switch (kind_) { + case ATOP: + os << MTag("span", "class='frac'") + << MTag("span", "class='numer'") << cell(0) << ETag("span") + << MTag("span", "class='numer'") << cell(1) << ETag("span") + << ETag("span"); + break; + + // we do not presently distinguish these + case OVER: + case FRAC: + case DFRAC: + case TFRAC: + case CFRAC: + case CFRACLEFT: + case CFRACRIGHT: + os << MTag("span", "class='frac'") + << MTag("span", "class='numer'") << cell(0) << ETag("span") + << MTag("span", "class='denom'") << cell(1) << ETag("span") + << ETag("span"); + break; + + case NICEFRAC: + os << cell(0) << '/' << cell(1); + break; + + case UNITFRAC: + if (nargs() == 3) + os << cell(2) << ' '; + os << cell(0) << '/' << cell(1); + break; + + case UNIT: + // FIXME This is not right, because we still output i, etc, + // when we output the cell. So we need to prevent that somehow. + if (nargs() == 2) + os << cell(0) + << MTag("span") + << cell(1) + << ETag("span"); + else + os << MTag("span") + << cell(0) + << ETag("span"); + } } @@ -297,9 +507,221 @@ void InsetMathFrac::validate(LaTeXFeatures & features) const { if (kind_ == NICEFRAC || kind_ == UNITFRAC || kind_ == UNIT) features.require("units"); + if (kind_ == CFRAC || kind_ == CFRACLEFT || kind_ == CFRACRIGHT + || kind_ == DFRAC || kind_ == TFRAC) + features.require("amsmath"); + if (features.runparams().math_flavor == OutputParams::MathAsHTML) + // CSS adapted from eLyXer + features.addCSSSnippet( + "span.frac{display: inline-block; vertical-align: middle; text-align:center;}\n" + "span.numer{display: block;}\n" + "span.denom{display: block; border-top: thin solid #000040;}"); InsetMathNest::validate(features); } +///////////////////////////////////////////////////////////////////// +// +// InsetMathBinom +// +///////////////////////////////////////////////////////////////////// + + +InsetMathBinom::InsetMathBinom(Buffer * buf, Kind kind) + : InsetMathFracBase(buf), kind_(kind) +{} + + +Inset * InsetMathBinom::clone() const +{ + return new InsetMathBinom(*this); +} + + +int InsetMathBinom::dw(int height) const +{ + int w = height / 5; + if (w > 15) + w = 15; + if (w < 6) + w = 6; + return w; +} + + +void InsetMathBinom::metrics(MetricsInfo & mi, Dimension & dim) const +{ + Dimension dim0, dim1; + + // FIXME: for an unknown reason the cells must be set directly + // after the StyleChanger and cannot be set after the if case + if (kind_ == DBINOM) { + StyleChanger dummy(mi.base, LM_ST_DISPLAY); + cell(0).metrics(mi, dim0); + cell(1).metrics(mi, dim1); + } else if (kind_ == TBINOM) { + StyleChanger dummy(mi.base, LM_ST_SCRIPT); + cell(0).metrics(mi, dim0); + cell(1).metrics(mi, dim1); + } else { + FracChanger dummy(mi.base); + cell(0).metrics(mi, dim0); + cell(1).metrics(mi, dim1); + } + dim.asc = dim0.height() + 4 + 5; + dim.des = dim1.height() + 4 - 5; + dim.wid = max(dim0.wid, dim1.wid) + 2 * dw(dim.height()) + 4; + metricsMarkers2(dim); +} + + +void InsetMathBinom::draw(PainterInfo & pi, int x, int y) const +{ + 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); + // define the binom brackets + docstring const bra = kind_ == BRACE ? from_ascii("{") : + kind_ == BRACK ? from_ascii("[") : from_ascii("("); + docstring const ket = kind_ == BRACE ? from_ascii("}") : + kind_ == BRACK ? from_ascii("]") : from_ascii(")"); + + int m = x + dim.width() / 2; + // FIXME: for an unknown reason the cells must be drawn directly + // after the StyleChanger and cannot be drawn after the if case + if (kind_ == DBINOM) { + StyleChanger dummy(pi.base, LM_ST_DISPLAY); + cell(0).draw(pi, m - dim0.wid / 2, y - dim0.des - 3 - 5); + cell(1).draw(pi, m - dim1.wid / 2, y + dim1.asc + 3 - 5); + } else if (kind_ == TBINOM) { + StyleChanger dummy(pi.base, LM_ST_SCRIPT); + cell(0).draw(pi, m - dim0.wid / 2, y - dim0.des - 3 - 5); + cell(1).draw(pi, m - dim1.wid / 2, y + dim1.asc + 3 - 5); + } else { + FracChanger dummy2(pi.base); + cell(0).draw(pi, m - dim0.wid / 2, y - dim0.des - 3 - 5); + cell(1).draw(pi, m - dim1.wid / 2, y + dim1.asc + 3 - 5); + } + // draw the brackets and the marker + mathed_draw_deco(pi, x, y - dim.ascent(), dw(dim.height()), + dim.height(), bra); + mathed_draw_deco(pi, x + dim.width() - dw(dim.height()), + y - dim.ascent(), dw(dim.height()), dim.height(), ket); + drawMarkers2(pi, x, y); +} + + +bool InsetMathBinom::extraBraces() const +{ + return kind_ == CHOOSE || kind_ == BRACE || kind_ == BRACK; +} + + +void InsetMathBinom::write(WriteStream & os) const +{ + MathEnsurer ensurer(os); + switch (kind_) { + case BINOM: + os << "\\binom{" << cell(0) << "}{" << cell(1) << '}'; + break; + case DBINOM: + os << "\\dbinom{" << cell(0) << "}{" << cell(1) << '}'; + break; + case TBINOM: + os << "\\tbinom{" << cell(0) << "}{" << cell(1) << '}'; + break; + case CHOOSE: + os << '{' << cell(0) << " \\choose " << cell(1) << '}'; + break; + case BRACE: + os << '{' << cell(0) << " \\brace " << cell(1) << '}'; + break; + case BRACK: + os << '{' << cell(0) << " \\brack " << cell(1) << '}'; + break; + } +} + + +void InsetMathBinom::normalize(NormalStream & os) const +{ + os << "[binom " << cell(0) << ' ' << cell(1) << ']'; +} + + +void InsetMathBinom::mathmlize(MathStream & os) const +{ + char ldelim = ' '; + char rdelim = ' '; + switch (kind_) { + case BINOM: + case TBINOM: + case DBINOM: + case CHOOSE: + ldelim = '('; + rdelim = ')'; + break; + case BRACE: + ldelim = '{'; + rdelim = '}'; + break; + case BRACK: + ldelim = '['; + rdelim = ']'; + break; + } + os << "" << ldelim << "" + << "" + << cell(0) << cell(1) + << "" + << "" << rdelim << ""; +} + + +void InsetMathBinom::htmlize(HtmlStream & os) const +{ + char ldelim = ' '; + char rdelim = ' '; + switch (kind_) { + case BINOM: + case TBINOM: + case DBINOM: + case CHOOSE: + ldelim = '('; + rdelim = ')'; + break; + case BRACE: + ldelim = '{'; + rdelim = '}'; + break; + case BRACK: + ldelim = '['; + rdelim = ']'; + break; + } + os << MTag("span", "class='binomdelim'") << ldelim << ETag("span") << '\n' + << MTag("span", "class='binom'") << '\n' + << MTag("span") << cell(0) << ETag("span") << '\n' + << MTag("span") << cell(1) << ETag("span") << '\n' + << ETag("span") << '\n' + << MTag("span", "class='binomdelim'") << rdelim << ETag("span") << '\n'; +} + + +void InsetMathBinom::validate(LaTeXFeatures & features) const +{ + if (features.runparams().isLaTeX()) { + if (kind_ == BINOM) + features.require("binom"); + if (kind_ == DBINOM || kind_ == TBINOM) + features.require("amsmath"); + } else if (features.runparams().math_flavor == OutputParams::MathAsHTML) + features.addCSSSnippet( + "span.binom{display: inline-block; vertical-align: bottom; text-align:center;}\n" + "span.binom span{display: block;}\n" + "span.binomdelim{font-size: 2em;}"); + InsetMathNest::validate(features); +} + } // namespace lyx