src/mathed/InsetMathXArrow.cpp

   1 /**
   2  * \file InsetMathXArrow.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 "support/lassert.h"
  14
  15 #include "InsetMathXArrow.h"
  16 #include "MathData.h"
  17 #include "MathStream.h"
  18 #include "MathStream.h"
  19 #include "MathSupport.h"
  20
  21 #include "LaTeXFeatures.h"
  22
  23 #include <algorithm>
  24
  25 using namespace std;
  26
  27 namespace lyx {
  28
  29
  30 InsetMathXArrow::InsetMathXArrow(Buffer * buf, docstring const & name)
  31         : InsetMathFracBase(buf), name_(name)
  32 {}
  33
  34
  35 Inset * InsetMathXArrow::clone() const
  36 {
  37         return new InsetMathXArrow(*this);
  38 }
  39
  40
  41 void InsetMathXArrow::metrics(MetricsInfo & mi, Dimension & dim) const
  42 {
  43         ScriptChanger dummy(mi.base);
  44         Dimension dim0;
  45         cell(0).metrics(mi, dim0);
  46         Dimension dim1;
  47         cell(1).metrics(mi, dim1);
  48         dim.wid = max(dim0.width(), dim1.width()) + 10;
  49         dim.asc = dim0.height() + 10;
  50         dim.des = dim1.height();
  51         metricsMarkers(dim);
  52 }
  53
  54
  55 void InsetMathXArrow::draw(PainterInfo & pi, int x, int y) const
  56 {
  57         ScriptChanger dummy(pi.base);
  58         Dimension const dim = dimension(*pi.base.bv);
  59         Dimension const & dim0 = cell(0).dimension(*pi.base.bv);
  60         // center the cells with the decoration
  61         cell(0).draw(pi, x + dim.width()/2 - dim0.width()/2, y - 10);
  62         Dimension const & dim1 = cell(1).dimension(*pi.base.bv);
  63         cell(1).draw(pi, x + dim.width()/2 - dim1.width()/2, y + dim1.height());
  64         mathed_draw_deco(pi, x + 1, y - 7, dim.wid - 2, 5, name_);
  65         drawMarkers(pi, x, y);
  66 }
  67
  68
  69 void InsetMathXArrow::write(WriteStream & os) const
  70 {
  71         MathEnsurer ensurer(os);
  72         os << '\\' << name_;
  73         if (!cell(1).empty())
  74                 os << '[' << cell(1) << ']';
  75         os << '{' << cell(0) << '}';
  76 }
  77
  78
  79 void InsetMathXArrow::normalize(NormalStream & os) const
  80 {
  81         os << "[xarrow " << name_ << ' ' <<  cell(0) << ' ' << cell(1) << ']';
  82 }
  83
  84
  85 void InsetMathXArrow::mathmlize(MathStream & ms) const
  86 {
  87         char const * arrow;
  88
  89         if (name_ == "xleftarrow")
  90                 arrow = "&larr;";
  91         else if (name_ == "xrightarrow")
  92                 arrow = "&rarr;";
  93         else if (name_ == "xhookleftarrow")
  94                 arrow = "&larrhk;";
  95         else if (name_ == "xhookrightarrow")
  96                 arrow = "&rarrhk;";
  97         else if (name_ == "xLeftarrow")
  98                 arrow = "&lArr;";
  99         else if (name_ == "xRightarrow")
 100                 arrow = "&rArr;";
 101         else if (name_ == "xleftrightarrow")
 102                 arrow = "&leftrightarrow;";
 103         else if (name_ == "xLeftrightarrow")
 104                 arrow = "&Leftrightarrow;";
 105         else if (name_ == "xleftharpoondown")
 106                 arrow = "&leftharpoondown;";
 107         else if (name_ == "xleftharpoonup")
 108                 arrow = "&leftharpoonup;";
 109         else if (name_ == "xleftrightharpoons")
 110                 arrow = "&leftrightharpoons;";
 111         else if (name_ == "xrightharpoondown")
 112                 arrow = "&rightharpoondown;";
 113         else if (name_ == "xrightharpoonup")
 114                 arrow = "&rightharpoonup;";
 115         else if (name_ == "xrightleftharpoons")
 116                 arrow = "&rightleftharpoons;";
 117         else if (name_ == "xmapsto")
 118                 arrow = "&mapsto;";
 119         else {
 120                 lyxerr << "mathmlize conversion for '" << name_ << "' not implemented" << endl;
 121                 LASSERT(false, arrow = "&rarr;");
 122         }
 123         ms << "<munderover accent='false' accentunder='false'>"
 124            << arrow << cell(1) << cell(0)
 125            << "</munderover>";
 126 }
 127
 128
 129 void InsetMathXArrow::htmlize(HtmlStream & os) const
 130 {
 131         char const * arrow;
 132
 133         if (name_ == "xleftarrow")
 134                 arrow = "&larr;";
 135         else if (name_ == "xrightarrow")
 136                 arrow = "&rarr;";
 137         else if (name_ == "xhookleftarrow")
 138                 arrow = "&larrhk;";
 139         else if (name_ == "xhookrightarrow")
 140                 arrow = "&rarrhk;";
 141         else if (name_ == "xLeftarrow")
 142                 arrow = "&lArr;";
 143         else if (name_ == "xRightarrow")
 144                 arrow = "&rArr;";
 145         else if (name_ == "xleftrightarrow")
 146                 arrow = "&leftrightarrow;";
 147         else if (name_ == "xLeftrightarrow")
 148                 arrow = "&Leftrightarrow;";
 149         else if (name_ == "xleftharpoondown")
 150                 arrow = "&leftharpoondown;";
 151         else if (name_ == "xleftharpoonup")
 152                 arrow = "&leftharpoonup;";
 153         else if (name_ == "xleftrightharpoons")
 154                 arrow = "&leftrightharpoons;";
 155         else if (name_ == "xrightharpoondown")
 156                 arrow = "&rightharpoondown;";
 157         else if (name_ == "xrightharpoonup")
 158                 arrow = "&rightharpoonup;";
 159         else if (name_ == "xrightleftharpoons")
 160                 arrow = "&rightleftharpoons;";
 161         else if (name_ == "xmapsto")
 162                 arrow = "&mapsto;";
 163         else {
 164                 lyxerr << "htmlize conversion for '" << name_ << "' not implemented" << endl;
 165                 LASSERT(false, arrow = "&rarr;");
 166         }
 167         os << MTag("span", "class='xarrow'")
 168                  << MTag("span", "class='xatop'") << cell(0) << ETag("span")
 169                  << MTag("span", "class='xabottom'") << arrow << ETag("span")
 170                  << ETag("span");
 171 }
 172
 173
 174 void InsetMathXArrow::validate(LaTeXFeatures & features) const
 175 {
 176         if (name_ == "xleftarrow" || name_ == "xrightarrow")
 177                 features.require("amsmath");
 178         else
 179                 features.require("mathtools");
 180         if (features.runparams().math_flavor == OutputParams::MathAsHTML)
 181                 // CSS adapted from eLyXer
 182                 features.addCSSSnippet(
 183                         "span.xarrow{display: inline-block; vertical-align: middle; text-align:center;}\n"
 184                         "span.xatop{display: block;}\n"
 185                         "span.xabottom{display: block;}");
 186         InsetMathNest::validate(features);
 187 }
 188
 189
 190 } // namespace lyx