src/mathed/InsetMathOverset.cpp

   1 /**
   2  * \file InsetMathOverset.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "InsetMathOverset.h"
  14 #include "MathData.h"
  15 #include "MathStream.h"
  16
  17 #include "Cursor.h"
  18 #include "LaTeXFeatures.h"
  19
  20 using namespace std;
  21
  22 namespace lyx {
  23
  24 Inset * InsetMathOverset::clone() const
  25 {
  26         return new InsetMathOverset(*this);
  27 }
  28
  29
  30 void InsetMathOverset::metrics(MetricsInfo & mi, Dimension & dim) const
  31 {
  32         Dimension dim1;
  33         cell(1).metrics(mi, dim1);
  34         FracChanger dummy(mi.base);
  35         Dimension dim0;
  36         cell(0).metrics(mi, dim0);
  37         dim.wid = max(dim0.width(), dim1.wid) + 4;
  38         dim.asc = dim1.asc + dim0.height() + 4;
  39         dim.des = dim1.des;
  40         metricsMarkers(dim);
  41 }
  42
  43
  44 void InsetMathOverset::draw(PainterInfo & pi, int x, int y) const
  45 {
  46         Dimension const dim = dimension(*pi.base.bv);
  47         Dimension const & dim0 = cell(0).dimension(*pi.base.bv);
  48         Dimension const & dim1 = cell(1).dimension(*pi.base.bv);
  49         int m  = x + dim.wid / 2;
  50         int yo = y - dim1.asc - dim0.des - 1;
  51         cell(1).draw(pi, m - dim1.wid / 2, y);
  52         FracChanger dummy(pi.base);
  53         cell(0).draw(pi, m - dim0.width() / 2, yo);
  54         drawMarkers(pi, x, y);
  55 }
  56
  57
  58 bool InsetMathOverset::idxFirst(Cursor & cur) const
  59 {
  60         cur.idx() = 1;
  61         cur.pos() = 0;
  62         return true;
  63 }
  64
  65
  66 bool InsetMathOverset::idxLast(Cursor & cur) const
  67 {
  68         cur.idx() = 1;
  69         cur.pos() = cur.lastpos();
  70         return true;
  71 }
  72
  73
  74 void InsetMathOverset::write(WriteStream & os) const
  75 {
  76         MathEnsurer ensurer(os);
  77         os << "\\overset{" << cell(0) << "}{" << cell(1) << '}';
  78 }
  79
  80
  81 void InsetMathOverset::normalize(NormalStream & os) const
  82 {
  83         os << "[overset " << cell(0) << ' ' << cell(1) << ']';
  84 }
  85
  86
  87 void InsetMathOverset::validate(LaTeXFeatures & features) const
  88 {
  89         features.require("amsmath");
  90         InsetMathNest::validate(features);
  91 }
  92
  93
  94 } // namespace lyx