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36e2a2c95f
Neither underset nor overset will work reliably, I'm afraid, but such is the price of using HTML rather than MathML. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@33982 a592a061-630c-0410-9148-cb99ea01b6c8
129 lines
2.9 KiB
C++
129 lines
2.9 KiB
C++
/**
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* \file InsetMathUnderset.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 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 "InsetMathUnderset.h"
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#include "MathData.h"
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#include "MathStream.h"
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#include "Cursor.h"
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#include "LaTeXFeatures.h"
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using namespace std;
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namespace lyx {
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Inset * InsetMathUnderset::clone() const
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{
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return new InsetMathUnderset(*this);
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}
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void InsetMathUnderset::metrics(MetricsInfo & mi, Dimension & dim) const
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{
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Dimension dim1;
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cell(1).metrics(mi, dim1);
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FracChanger dummy(mi.base);
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Dimension dim0;
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cell(0).metrics(mi, dim0);
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dim.wid = max(dim0.width(), dim1.width()) + 4;
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dim.asc = dim1.ascent();
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dim.des = dim1.descent() + dim0.height() + 4;
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metricsMarkers(dim);
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}
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void InsetMathUnderset::draw(PainterInfo & pi, int x, int y) const
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{
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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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Dimension const & dim1 = cell(1).dimension(*pi.base.bv);
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int m = x + dim.wid / 2;
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int yo = y + dim1.descent() + dim0.ascent() + 1;
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cell(1).draw(pi, m - dim1.width() / 2, y);
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FracChanger dummy(pi.base);
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cell(0).draw(pi, m - dim0.width() / 2, yo);
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drawMarkers(pi, x, y);
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}
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bool InsetMathUnderset::idxFirst(Cursor & cur) const
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{
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cur.idx() = 1;
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cur.pos() = 0;
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return true;
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}
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bool InsetMathUnderset::idxLast(Cursor & cur) const
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{
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cur.idx() = 1;
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cur.pos() = cur.lastpos();
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return true;
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}
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bool InsetMathUnderset::idxUpDown(Cursor & cur, bool up) const
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{
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idx_type target = up; // up ? 1 : 0, since upper cell has idx 1
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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() = cur.cell().x2pos(&cur.bv(), cur.x_target());
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return true;
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}
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void InsetMathUnderset::write(WriteStream & os) const
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{
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MathEnsurer ensurer(os);
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os << "\\underset{" << cell(0) << "}{" << cell(1) << '}';
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}
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void InsetMathUnderset::normalize(NormalStream & os) const
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{
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os << "[underset " << cell(0) << ' ' << cell(1) << ']';
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}
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void InsetMathUnderset::mathmlize(MathStream & ms) const
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{
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ms << "<munder accent='false'>" << cell(1) << cell(0) << "</munder>";
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}
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void InsetMathUnderset::htmlize(HtmlStream & os) const
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{
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os << MTag("span", "class='underset'")
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<< MTag("span") << cell(0) << ETag("span")
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<< MTag("span", "class='bottom'") << cell(1) << ETag("span")
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<< ETag("span");
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}
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void InsetMathUnderset::validate(LaTeXFeatures & features) const
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{
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if (features.runparams().isLaTeX())
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features.require("amsmath");
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else if (features.runparams().math_flavor == OutputParams::MathAsHTML)
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features.addPreambleSnippet("<style type=\"text/css\">\n"
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"span.underset{display: inline-block; vertical-align: top; text-align:center;}\n"
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"span.underset span {display: block;}\n"
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"span.bottom{font-size: 66%;}\n"
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"</style>");
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InsetMathNest::validate(features);
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}
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} // namespace lyx
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