src/mathed/InsetMathRoot.cpp

   1 /**
   2  * \file InsetMathRoot.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Alejandro Aguilar Sierra
   7  * \author André Pönitz
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "InsetMathRoot.h"
  15 #include "MathData.h"
  16 #include "MathStream.h"
  17 #include "Cursor.h"
  18
  19 #include "frontends/Painter.h"
  20
  21 using namespace std;
  22
  23 namespace lyx {
  24
  25
  26 InsetMathRoot::InsetMathRoot(Buffer * buf)
  27         : InsetMathNest(buf, 2)
  28 {}
  29
  30
  31 Inset * InsetMathRoot::clone() const
  32 {
  33         return new InsetMathRoot(*this);
  34 }
  35
  36
  37 void InsetMathRoot::metrics(MetricsInfo & mi, Dimension & dim) const
  38 {
  39         InsetMathNest::metrics(mi);
  40         Dimension const & dim0 = cell(0).dimension(*mi.base.bv);
  41         Dimension const & dim1 = cell(1).dimension(*mi.base.bv);
  42         dim.asc = max(dim0.ascent()  + 5, dim1.ascent())  + 2;
  43         dim.des = max(dim0.descent() - 5, dim1.descent()) + 2;
  44         dim.wid = dim0.width() + dim1.width() + 10;
  45         metricsMarkers(dim);
  46 }
  47
  48
  49 void InsetMathRoot::draw(PainterInfo & pi, int x, int y) const
  50 {
  51         Dimension const & dim0 = cell(0).dimension(*pi.base.bv);
  52         int const w = dim0.width();
  53         // the "exponent"
  54         cell(0).draw(pi, x, y - 5 - dim0.descent());
  55         // the "base"
  56         cell(1).draw(pi, x + w + 8, y);
  57         Dimension const dim = dimension(*pi.base.bv);
  58         int const a = dim.ascent();
  59         int const d = dim.descent();
  60         int xp[4];
  61         int yp[4];
  62         pi.pain.line(x + dim.width(), y - a + 1,
  63                                                          x + w + 4, y - a + 1, Color_math);
  64         xp[0] = x + w + 4;         yp[0] = y - a + 1;
  65         xp[1] = x + w;             yp[1] = y + d;
  66         xp[2] = x + w - 2;         yp[2] = y + (d - a)/2 + 2;
  67         xp[3] = x + w - 5;         yp[3] = y + (d - a)/2 + 4;
  68         pi.pain.lines(xp, yp, 4, Color_math);
  69         drawMarkers(pi, x, y);
  70 }
  71
  72
  73 void InsetMathRoot::write(WriteStream & os) const
  74 {
  75         MathEnsurer ensurer(os);
  76         os << "\\sqrt[" << cell(0) << "]{" << cell(1) << '}';
  77 }
  78
  79
  80 void InsetMathRoot::normalize(NormalStream & os) const
  81 {
  82         os << "[root " << cell(0) << ' ' << cell(1) << ']';
  83 }
  84
  85
  86 bool InsetMathRoot::idxUpDown(Cursor & cur, bool up) const
  87 {
  88         Cursor::idx_type const target = up ? 0 : 1;
  89         if (cur.idx() == target)
  90                 return false;
  91         cur.idx() = target;
  92         cur.pos() = up ? cur.lastpos() : 0;
  93         return true;
  94 }
  95
  96
  97 void InsetMathRoot::maple(MapleStream & os) const
  98 {
  99         os << '(' << cell(1) << ")^(1/(" << cell(0) <<"))";
 100 }
 101
 102
 103 void InsetMathRoot::mathematica(MathematicaStream & os) const
 104 {
 105         os << '(' << cell(1) << ")^(1/(" << cell(0) <<"))";
 106 }
 107
 108
 109 void InsetMathRoot::octave(OctaveStream & os) const
 110 {
 111         os << '(' << cell(1) << ")^(1/(" << cell(0) <<"))";
 112 }
 113
 114
 115 void InsetMathRoot::mathmlize(MathStream & os) const
 116 {
 117         os << MTag("mroot") << cell(1) << cell(0) << ETag("mroot");
 118 }
 119
 120
 121 } // namespace lyx