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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@20290 a592a061-630c-0410-9148-cb99ea01b6c8
294 lines
6.9 KiB
C++
294 lines
6.9 KiB
C++
/**
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* \file InsetMathFrac.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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*
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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 "MathStream.h"
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#include "TextPainter.h"
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#include "LaTeXFeatures.h"
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#include "Color.h"
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#include "Cursor.h"
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#include "frontends/Painter.h"
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namespace lyx {
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InsetMathFrac::InsetMathFrac(Kind kind, InsetMath::idx_type ncells)
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: InsetMathFracBase(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::idxRight(Cursor & cur) const
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{
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InsetMath::idx_type target;
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if (kind_ == UNITFRAC3)
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target = 0;
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else if (kind_ == UNIT)
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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.x_target());
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return true;
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}
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bool InsetMathFrac::idxLeft(Cursor & cur) const
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{
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InsetMath::idx_type target;
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if (kind_ == UNITFRAC3)
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target = 2;
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else if (kind_ == UNIT)
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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.x_target());
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return true;
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}
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bool InsetMathFrac::metrics(MetricsInfo & mi, Dimension & dim) const
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{
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if (kind_ == UNIT) {
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cell(0).metrics(mi);
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ShapeChanger dummy2(mi.base.font, Font::UP_SHAPE);
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cell(1).metrics(mi);
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dim.wid = cell(0).width() + cell(1).width() + 5;
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dim.asc = std::max(cell(0).ascent(), cell(1).ascent());
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dim.des = std::max(cell(0).descent(), cell(1).descent());
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} else if (kind_ == UNITFRAC3) {
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cell(2).metrics(mi);
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ShapeChanger dummy2(mi.base.font, Font::UP_SHAPE);
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FracChanger dummy(mi.base);
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cell(0).metrics(mi);
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cell(1).metrics(mi);
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dim.wid = cell(0).width() + cell(1).width() + cell(2).width() + 10;
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dim.asc = std::max(cell(2).ascent(), cell(0).height() + 5);
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dim.des = std::max(cell(2).descent(), cell(1).height() - 5);
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} else {
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FracChanger dummy(mi.base);
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cell(0).metrics(mi);
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cell(1).metrics(mi);
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if (kind_ == NICEFRAC) {
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dim.wid = cell(0).width() + cell(1).width() + 5;
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dim.asc = cell(0).height() + 5;
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dim.des = cell(1).height() - 5;
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} else if (kind_ == UNITFRAC) {
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ShapeChanger dummy2(mi.base.font, Font::UP_SHAPE);
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dim.wid = cell(0).width() + cell(1).width() + 5;
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dim.asc = cell(0).height() + 5;
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dim.des = cell(1).height() - 5;
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} else {
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dim.wid = std::max(cell(0).width(), cell(1).width()) + 2;
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dim.asc = cell(0).height() + 2 + 5;
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dim.des = cell(1).height() + 2 - 5;
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}
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}
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metricsMarkers(dim);
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if (dim_ == dim)
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return false;
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dim_ = dim;
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return true;
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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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setPosCache(pi, x, y);
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int m = x + dim_.wid / 2;
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if (kind_ == UNIT) {
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cell(0).draw(pi, x + 1, y);
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ShapeChanger dummy2(pi.base.font, Font::UP_SHAPE);
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cell(1).draw(pi, x + cell(0).width() + 5, y);
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} else if (kind_ == UNITFRAC3) {
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cell(2).draw(pi, x + 1, y);
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ShapeChanger dummy2(pi.base.font, Font::UP_SHAPE);
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FracChanger dummy(pi.base);
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int xx = x + cell(2).width() + 5;
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cell(0).draw(pi, xx + 2,
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y - cell(0).descent() - 5);
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cell(1).draw(pi, xx + cell(0).width() + 5,
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y + cell(1).ascent() / 2);
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} else {
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FracChanger dummy(pi.base);
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if (kind_ == NICEFRAC) {
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cell(0).draw(pi, x + 2,
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y - cell(0).descent() - 5);
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cell(1).draw(pi, x + cell(0).width() + 5,
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y + cell(1).ascent() / 2);
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} else if (kind_ == UNITFRAC) {
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ShapeChanger dummy2(pi.base.font, Font::UP_SHAPE);
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cell(0).draw(pi, x + 2,
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y - cell(0).descent() - 5);
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cell(1).draw(pi, x + cell(0).width() + 5,
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y + cell(1).ascent() / 2);
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} else {
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// Classical fraction
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cell(0).draw(pi, m - cell(0).width() / 2,
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y - cell(0).descent() - 2 - 5);
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cell(1).draw(pi, m - cell(1).width() / 2,
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y + cell(1).ascent() + 2 - 5);
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}
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}
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if (kind_ == NICEFRAC || kind_ == UNITFRAC || kind_ == UNITFRAC3) {
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// Diag line:
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int xx = x;
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if (kind_ == UNITFRAC3)
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xx += cell(2).width() + 5;
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pi.pain.line(xx + cell(0).width(),
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y + dim_.des - 2,
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xx + cell(0).width() + 5,
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y - dim_.asc + 2, Color::math);
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}
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if (kind_ == FRAC || kind_ == OVER)
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pi.pain.line(x + 1, y - 5,
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x + dim_.wid - 2, y - 5, Color::math);
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drawMarkers(pi, x, y);
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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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cell(0).metricsT(mi, dim);
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cell(1).metricsT(mi, dim);
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dim.wid = std::max(cell(0).width(), cell(1).width());
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dim.asc = cell(0).height() + 1;
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dim.des = cell(1).height();
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//dim = dim_;
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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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int m = x + dim_.width() / 2;
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cell(0).drawT(pain, m - cell(0).width() / 2, y - cell(0).descent() - 1);
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cell(1).drawT(pain, m - cell(1).width() / 2, y + cell(1).ascent());
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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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void InsetMathFrac::write(WriteStream & os) const
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{
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switch (kind_) {
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case ATOP:
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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 NICEFRAC:
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case UNITFRAC:
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InsetMathNest::write(os);
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break;
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case UNIT:
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os << "\\unit[" << cell(0) << "]{" << cell(1) << '}';
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break;
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case UNITFRAC3:
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os << "\\unitfrac[" << cell(2) << "]{" << 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 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 UNITFRAC3:
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return from_ascii("unitfracthree");
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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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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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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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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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os << MTag("mfrac") << cell(0) << cell(1) << ETag("mfrac");
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}
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void InsetMathFrac::validate(LaTeXFeatures & features) const
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{
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if (kind_ == NICEFRAC || kind_ == UNITFRAC
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|| kind_ == UNIT || kind_ == UNITFRAC3)
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features.require("units");
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InsetMathNest::validate(features);
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}
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} // namespace lyx
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