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2b1515a936
This makes code more uniform. This is typically something that is done at end of cycle to limit backport issues later.
809 lines
19 KiB
C++
809 lines
19 KiB
C++
/**
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* \file InsetMathFracBase.cpp
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Alejandro Aguilar Sierra
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* \author André Pönitz
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* \author Uwe Stöhr
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "InsetMathFrac.h"
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#include "MathData.h"
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#include "MathParser.h"
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#include "MathStream.h"
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#include "MathSupport.h"
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#include "Cursor.h"
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#include "LaTeXFeatures.h"
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#include "MetricsInfo.h"
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#include "TextPainter.h"
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#include "frontends/FontMetrics.h"
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#include "frontends/Painter.h"
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#include "support/lassert.h"
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using namespace std;
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namespace lyx {
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/////////////////////////////////////////////////////////////////////
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//
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// InsetMathFracBase
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//
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/////////////////////////////////////////////////////////////////////
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InsetMathFracBase::InsetMathFracBase(Buffer * buf, idx_type ncells)
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: InsetMathNest(buf, ncells)
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{}
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bool InsetMathFracBase::idxUpDown(Cursor & cur, bool up) const
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{
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// If we only have one cell, target = 0, otherwise
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// target = up ? 0 : 1, since upper cell has idx 0
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InsetMath::idx_type target = nargs() > 1 ? !up : 0;
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if (cur.idx() == target)
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return false;
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cur.idx() = target;
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cur.pos() = cell(target).x2pos(&cur.bv(), cur.x_target());
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return true;
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}
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/////////////////////////////////////////////////////////////////////
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//
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// InsetMathFrac
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//
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/////////////////////////////////////////////////////////////////////
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InsetMathFrac::InsetMathFrac(Buffer * buf, Kind kind, InsetMath::idx_type ncells)
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: InsetMathFracBase(buf, ncells), kind_(kind)
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{}
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Inset * InsetMathFrac::clone() const
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{
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return new InsetMathFrac(*this);
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}
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InsetMathFrac * InsetMathFrac::asFracInset()
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{
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return kind_ == ATOP ? 0 : this;
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}
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InsetMathFrac const * InsetMathFrac::asFracInset() const
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{
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return kind_ == ATOP ? 0 : this;
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}
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bool InsetMathFrac::idxForward(Cursor & cur) const
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{
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InsetMath::idx_type target = 0;
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if (kind_ == UNIT || (kind_ == UNITFRAC && nargs() == 3)) {
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if (nargs() == 3)
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target = 0;
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else if (nargs() == 2)
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target = 1;
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} else
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return false;
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if (cur.idx() == target)
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return false;
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cur.idx() = target;
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cur.pos() = cell(target).x2pos(&cur.bv(), cur.x_target());
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return true;
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}
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bool InsetMathFrac::idxBackward(Cursor & cur) const
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{
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InsetMath::idx_type target = 0;
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if (kind_ == UNIT || (kind_ == UNITFRAC && nargs() == 3)) {
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if (nargs() == 3)
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target = 2;
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else if (nargs() == 2)
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target = 0;
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} else
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return false;
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if (cur.idx() == target)
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return false;
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cur.idx() = target;
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cur.pos() = cell(target).x2pos(&cur.bv(), cur.x_target());
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return true;
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}
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MathClass InsetMathFrac::mathClass() const
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{
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// Generalized fractions are of inner class (see The TeXbook, p. 292)
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// But stuff from the unit/nicefrac packages are not real fractions.
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MathClass mc = MC_ORD;
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switch (kind_) {
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case ATOP:
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case OVER:
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case FRAC:
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case DFRAC:
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case TFRAC:
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case CFRAC:
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case CFRACLEFT:
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case CFRACRIGHT:
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mc = MC_INNER;
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break;
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case NICEFRAC:
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case UNITFRAC:
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case UNIT:
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break;
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}
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return mc;
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}
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namespace {
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// align the top of M in the cell with the top of M in the surrounding font
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int dy_for_nicefrac(MetricsBase & mb)
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{
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// this is according to nicefrac.sty
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int big_m = theFontMetrics(mb.font).ascent('M');
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Changer dummy = mb.changeScript();
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int small_m = theFontMetrics(mb.font).ascent('M');
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return big_m - small_m;
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}
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// symbol for nicefrac solidus
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latexkeys const * slash_symbol()
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{
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return in_word_set(from_ascii("slash"));
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}
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} // namespace
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void InsetMathFrac::metrics(MetricsInfo & mi, Dimension & dim) const
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{
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Dimension dim0, dim1, dim2;
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Changer dummy3 = mi.base.changeEnsureMath();
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switch (kind_) {
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case UNIT: {
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// \unitone, \unittwo
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dim.wid = 0;
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int unit_cell = 0;
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// is there an extra cell holding the value being given a dimension?
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// (this is \unittwo)
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if (nargs() == 2) {
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cell(0).metrics(mi, dim1);
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dim.wid += dim1.wid + 4;
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unit_cell = 1;
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}
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Changer dummy = mi.base.font.changeShape(UP_SHAPE);
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cell(unit_cell).metrics(mi, dim0);
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dim.wid += dim0.width() + 1;
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dim.asc = max(dim0.asc, dim1.asc);
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dim.des = max(dim0.des, dim1.des);
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}
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break;
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case UNITFRAC:
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case NICEFRAC: {
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// \unitfrac, \unitfracthree, \nicefrac
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dim.wid = 0;
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dim.asc = 0;
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dim.des = 0;
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int const dy = dy_for_nicefrac(mi.base);
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// is there an extra cell holding the value being given a dimension?
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// (this is \unitfracthree)
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if (kind_ == UNITFRAC && nargs() == 3) {
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cell(2).metrics(mi, dim2);
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dim.wid += dim2.wid + 4;
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dim.asc = dim2.asc;
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dim.des = dim2.des;
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}
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Changer dummy = (kind_ == UNITFRAC) ? mi.base.font.changeShape(UP_SHAPE)
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: Changer();
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Changer dummy2 = mi.base.changeScript();
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if (latexkeys const * slash = slash_symbol()) {
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Dimension dimslash;
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mathedSymbolDim(mi.base, dimslash, slash);
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dim.wid += dimslash.wid - mathed_mu(mi.base.font, 3.0);
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dim.asc = max(dim.asc, dimslash.asc);
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dim.des = max(dim.des, dimslash.des);
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}
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cell(0).metrics(mi, dim0);
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cell(1).metrics(mi, dim1);
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dim.wid += dim0.wid + dim1.wid + 2;
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dim.asc = max(max(dim.asc, dim0.asc + dy), dim1.asc);
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dim.des = max(max(dim.des, dim0.des - dy), dim1.des);
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}
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break;
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case FRAC:
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case CFRAC:
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case CFRACLEFT:
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case CFRACRIGHT:
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case DFRAC:
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case TFRAC:
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case OVER:
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case ATOP: {
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int const dy = axis_height(mi.base);
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Changer dummy =
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// \tfrac is always in text size
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(kind_ == TFRAC) ? mi.base.font.changeStyle(SCRIPT_STYLE) :
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// \cfrac and \dfrac are always in display size
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(kind_ == CFRAC
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|| kind_ == CFRACLEFT
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|| kind_ == CFRACRIGHT
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|| kind_ == DFRAC) ? mi.base.font.changeStyle(DISPLAY_STYLE) :
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// all others
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mi.base.changeFrac();
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Changer dummy2 = mi.base.changeEnsureMath();
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cell(0).metrics(mi, dim0);
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cell(1).metrics(mi, dim1);
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dim.wid = max(dim0.wid, dim1.wid) + 2;
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dim.asc = dim0.height() + dy/2 + dy;
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int const t = mi.base.solidLineThickness();
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dim.des = max(0, dim1.height() + dy/2 - dy + t);
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}
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} //switch (kind_)
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}
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void InsetMathFrac::draw(PainterInfo & pi, int x, int y) const
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{
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Changer dummy3 = pi.base.changeEnsureMath();
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Dimension const dim = dimension(*pi.base.bv);
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Dimension const dim0 = cell(0).dimension(*pi.base.bv);
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switch (kind_) {
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case UNIT: {
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// \unitone, \unittwo
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int xx = x;
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int unit_cell = 0;
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// is there an extra cell holding the value being given a dimension?
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// (this is \unittwo)
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if (nargs() == 2) {
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cell(0).draw(pi, x, y);
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xx += dim0.wid + 4;
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unit_cell = 1;
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}
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Changer dummy = pi.base.font.changeShape(UP_SHAPE);
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cell(unit_cell).draw(pi, xx, y);
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}
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break;
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case UNITFRAC:
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case NICEFRAC: {
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// \unitfrac, \unitfracthree, \nicefrac
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int xx = x;
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int const dy = dy_for_nicefrac(pi.base);
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// is there an extra cell holding the value being given a dimension?
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// (this is \unitfracthree)
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if (kind_ == UNITFRAC && nargs() == 3) {
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cell(2).draw(pi, x, y);
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xx += cell(2).dimension(*pi.base.bv).wid + 4;
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}
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Changer dummy = (kind_ == UNITFRAC) ? pi.base.font.changeShape(UP_SHAPE)
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: Changer();
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// nice fraction
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Changer dummy2 = pi.base.changeScript();
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cell(0).draw(pi, xx + 1, y - dy);
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// reference LaTeX code from nicefrac.sty:
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// \mkern-2mu/\mkern-1mu
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if (latexkeys const * slash = slash_symbol()) {
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int mkern = mathed_mu(pi.base.font, 2.0);
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mathedSymbolDraw(pi, xx + 1 + dim0.wid - mkern, y, slash);
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Dimension dimslash;
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mathedSymbolDim(pi.base, dimslash, slash);
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xx += dimslash.wid - mathed_mu(pi.base.font, 3.0);
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}
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cell(1).draw(pi, xx + 1 + dim0.wid, y);
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}
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break;
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case FRAC:
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case CFRAC:
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case CFRACLEFT:
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case CFRACRIGHT:
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case DFRAC:
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case TFRAC:
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case OVER:
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case ATOP: {
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int const dy = axis_height(pi.base);
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Changer dummy =
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// \tfrac is always in text size
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(kind_ == TFRAC) ? pi.base.font.changeStyle(SCRIPT_STYLE) :
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// \cfrac and \dfrac are always in display size
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(kind_ == CFRAC
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|| kind_ == CFRACLEFT
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|| kind_ == CFRACRIGHT
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|| kind_ == DFRAC) ? pi.base.font.changeStyle(DISPLAY_STYLE) :
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// all others
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pi.base.changeFrac();
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Dimension const dim1 = cell(1).dimension(*pi.base.bv);
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int const m = x + dim.wid / 2;
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int const xx =
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// align left
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(kind_ == CFRACLEFT) ? x + 1 :
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// align right
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(kind_ == CFRACRIGHT) ? x + dim.wid - dim0.wid - 2 :
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// center
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m - dim0.wid / 2;
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int const t = pi.base.solidLineThickness();
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// take dy/2 for the spacing around the horizontal line. This is
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// arbitrary. In LaTeX it is more complicated to ensure that displayed
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// fractions line up next to each other.
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// For more accurate implementation refer to the TeXbook, Appendix G,
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// rules 15a-e.
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cell(0).draw(pi, xx, y - dim0.des - dy/2 - dy);
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// center
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cell(1).draw(pi, m - dim1.wid / 2, y + dim1.asc + dy/2 - dy + t);
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// horizontal line
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if (kind_ != ATOP)
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pi.pain.line(x, y - dy, x + dim.wid, y - dy,
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pi.base.font.color(), pi.pain.line_solid, t);
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}
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} //switch (kind_)
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}
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void InsetMathFrac::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
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{
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Dimension dim0, dim1;
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cell(0).metricsT(mi, dim0);
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cell(1).metricsT(mi, dim1);
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dim.wid = max(dim0.width(), dim1.wid);
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dim.asc = dim0.height() + 1;
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dim.des = dim1.height();
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}
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void InsetMathFrac::drawT(TextPainter & /*pain*/, int /*x*/, int /*y*/) const
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{
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// FIXME: BROKEN!
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/*
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Dimension dim;
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int m = x + dim.width() / 2;
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cell(0).drawT(pain, m - dim0.width() / 2, y - dim0.des - 1);
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cell(1).drawT(pain, m - dim1.wid / 2, y + dim1.asc);
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// ASCII art: ignore niceties
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if (kind_ == FRAC || kind_ == OVER || kind_ == NICEFRAC || kind_ == UNITFRAC)
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pain.horizontalLine(x, y, dim.width());
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*/
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}
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void InsetMathFrac::write(WriteStream & os) const
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{
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MathEnsurer ensurer(os);
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switch (kind_) {
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case ATOP:
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// \\atop is only for compatibility, \\binom is the
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// LaTeX2e successor
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os << '{' << cell(0) << "\\atop " << cell(1) << '}';
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break;
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case OVER:
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// \\over is only for compatibility, normalize this to \\frac
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os << "\\frac{" << cell(0) << "}{" << cell(1) << '}';
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break;
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case FRAC:
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case DFRAC:
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case TFRAC:
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case NICEFRAC:
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case CFRAC:
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case UNITFRAC:
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if (nargs() == 2)
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InsetMathNest::write(os);
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else
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os << "\\unitfrac[" << cell(2) << "]{" << cell(0) << "}{" << cell(1) << '}';
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break;
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case UNIT:
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if (nargs() == 2)
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os << "\\unit[" << cell(0) << "]{" << cell(1) << '}';
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else
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os << "\\unit{" << cell(0) << '}';
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break;
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case CFRACLEFT:
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os << "\\cfrac[l]{" << cell(0) << "}{" << cell(1) << '}';
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break;
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case CFRACRIGHT:
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os << "\\cfrac[r]{" << cell(0) << "}{" << cell(1) << '}';
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break;
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}
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}
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docstring InsetMathFrac::name() const
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{
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switch (kind_) {
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case FRAC:
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return from_ascii("frac");
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case CFRAC:
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case CFRACLEFT:
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case CFRACRIGHT:
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return from_ascii("cfrac");
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case DFRAC:
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return from_ascii("dfrac");
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case TFRAC:
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return from_ascii("tfrac");
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case OVER:
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return from_ascii("over");
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case NICEFRAC:
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return from_ascii("nicefrac");
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case UNITFRAC:
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return from_ascii("unitfrac");
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case UNIT:
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return from_ascii("unit");
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case ATOP:
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return from_ascii("atop");
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}
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// shut up stupid compiler
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return docstring();
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}
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bool InsetMathFrac::extraBraces() const
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{
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return kind_ == ATOP || kind_ == OVER;
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}
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void InsetMathFrac::maple(MapleStream & os) const
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{
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if (nargs() != 2) {
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// Someone who knows about maple should fix this.
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LASSERT(false, return);
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}
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os << '(' << cell(0) << ")/(" << cell(1) << ')';
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}
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void InsetMathFrac::mathematica(MathematicaStream & os) const
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{
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if (nargs() != 2) {
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// Someone who knows about mathematica should fix this.
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LASSERT(false, return);
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}
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os << '(' << cell(0) << ")/(" << cell(1) << ')';
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}
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void InsetMathFrac::octave(OctaveStream & os) const
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{
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if (nargs() != 2) {
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// Someone who knows about octave should fix this.
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LASSERT(false, return);
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}
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os << '(' << cell(0) << ")/(" << cell(1) << ')';
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}
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void InsetMathFrac::mathmlize(MathStream & os) const
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{
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switch (kind_) {
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case ATOP:
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os << MTag("mfrac", "linethickeness='0'")
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<< MTag("mrow") << cell(0) << ETag("mrow")
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<< MTag("mrow") << cell(1) << ETag("mrow")
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<< ETag("mfrac");
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break;
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// we do not presently distinguish these
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case OVER:
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case FRAC:
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case DFRAC:
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case TFRAC:
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case CFRAC:
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case CFRACLEFT:
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case CFRACRIGHT:
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os << MTag("mfrac")
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<< MTag("mrow") << cell(0) << ETag("mrow")
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<< MTag("mrow") << cell(1) << ETag("mrow")
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<< ETag("mfrac");
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break;
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case NICEFRAC:
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os << MTag("mfrac", "bevelled='true'")
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<< MTag("mrow") << cell(0) << ETag("mrow")
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<< 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");
|
|
}
|
|
}
|
|
|
|
|
|
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
|
|
{
|
|
Changer dummy2 = mi.base.changeEnsureMath();
|
|
Dimension dim0, dim1;
|
|
int const dy = axis_height(mi.base);
|
|
Changer dummy =
|
|
(kind_ == DBINOM) ? mi.base.font.changeStyle(DISPLAY_STYLE) :
|
|
(kind_ == TBINOM) ? mi.base.font.changeStyle(SCRIPT_STYLE) :
|
|
mi.base.changeFrac();
|
|
cell(0).metrics(mi, dim0);
|
|
cell(1).metrics(mi, dim1);
|
|
dim.asc = dim0.height() + 1 + dy/2 + dy;
|
|
dim.des = max(0, dim1.height() + 1 + dy/2 - dy);
|
|
dim.wid = max(dim0.wid, dim1.wid) + 2 * dw(dim.height()) + 4;
|
|
}
|
|
|
|
|
|
void InsetMathBinom::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 const dy = axis_height(pi.base);
|
|
// 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;
|
|
{
|
|
Changer dummy =
|
|
(kind_ == DBINOM) ? pi.base.font.changeStyle(DISPLAY_STYLE) :
|
|
(kind_ == TBINOM) ? pi.base.font.changeStyle(SCRIPT_STYLE) :
|
|
pi.base.changeFrac();
|
|
// take dy both for the vertical alignment and for the spacing between
|
|
// cells
|
|
cell(0).draw(pi, m - dim0.wid / 2, y - dim0.des - dy/2 - dy);
|
|
cell(1).draw(pi, m - dim1.wid / 2, y + dim1.asc + dy/2 - dy);
|
|
}
|
|
// 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);
|
|
}
|
|
|
|
|
|
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 << "<mo fence='true' stretchy='true' form='prefix'>" << ldelim << "</mo>"
|
|
<< "<mfrac linethickness='0'>"
|
|
<< cell(0) << cell(1)
|
|
<< "</mfrac>"
|
|
<< "<mo fence='true' stretchy='true' form='postfix'>" << rdelim << "</mo>";
|
|
}
|
|
|
|
|
|
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
|