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200b4fd4ef
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@4859 a592a061-630c-0410-9148-cb99ea01b6c8
102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
/*
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* File: math_root.C
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* Purpose: Implementation of the root object
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* Author: Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
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* Created: January 1999
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* Description: Root math object
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*
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* Copyright: 1999 Alejandro Aguilar Sierra
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*
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* You are free to use and modify this code under the terms of
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* the GNU General Public Licence version 2 or later.
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*/
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#ifdef __GNUG__
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#pragma implementation
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#endif
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#include "math_rootinset.h"
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#include "math_mathmlstream.h"
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#include "frontends/Painter.h"
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using std::max;
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MathRootInset::MathRootInset()
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: MathNestInset(2)
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{}
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MathInset * MathRootInset::clone() const
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{
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return new MathRootInset(*this);
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}
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void MathRootInset::metrics(MathMetricsInfo & mi) const
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{
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MathNestInset::metrics(mi);
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dim_.a = max(cell(0).ascent() + 5, cell(1).ascent()) + 2;
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dim_.d = max(cell(1).descent() + 5, cell(0).descent()) + 2;
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dim_.w = cell(0).width() + cell(1).width() + 10;
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metricsMarkers();
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}
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void MathRootInset::draw(MathPainterInfo & pi, int x, int y) const
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{
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int const w = cell(0).width();
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// the "exponent"
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cell(0).draw(pi, x, y - 5 - cell(0).descent());
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// the "base"
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cell(1).draw(pi, x + w + 8, y);
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int const a = ascent();
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int const d = descent();
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int xp[5];
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int yp[5];
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xp[0] = x + width(); yp[0] = y - a + 1;
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xp[1] = x + w + 4; yp[1] = y - a + 1;
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xp[2] = x + w; yp[2] = y + d;
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xp[3] = x + w - 2; yp[3] = y + (d - a)/2 + 2;
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//xp[4] = x; yp[4] = y + (d - a)/2 + 2;
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xp[4] = x + w - 5; yp[4] = y + (d - a)/2 + 4;
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pi.pain.lines(xp, yp, 5, LColor::math);
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drawMarkers(pi, x, y);
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}
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void MathRootInset::write(WriteStream & os) const
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{
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os << "\\sqrt[" << cell(0) << "]{" << cell(1) << '}';
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}
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void MathRootInset::normalize(NormalStream & os) const
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{
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os << "[root " << cell(0) << ' ' << cell(1) << ']';
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}
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bool MathRootInset::idxUpDown(idx_type & idx, pos_type & pos, bool up, int) const
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{
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bool target = !up; // up ? 0 : 1;
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if (idx == target)
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return false;
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idx = target;
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pos = target ? 0 : cell(0).size();
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return true;
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}
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void MathRootInset::octavize(OctaveStream & os) const
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{
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os << "root(" << cell(1) << ',' << cell(0) <<')';
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}
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void MathRootInset::mathmlize(MathMLStream & os) const
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{
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os << MTag("mroot") << cell(1) << cell(0) << ETag("mroot");
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}
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