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 "InsetMathXArrow.h"
  14 #include "MathData.h"
  15 #include "MathStream.h"
  16 #include "MathStream.h"
  17 #include "MathSupport.h"
  18
  19 #include "LaTeXFeatures.h"
  20
  21 using namespace std;
  22
  23 namespace lyx {
  24
  25
  26 InsetMathXArrow::InsetMathXArrow(Buffer * buf, docstring const & name)
  27         : InsetMathFracBase(buf), name_(name)
  28 {}
  29
  30
  31 Inset * InsetMathXArrow::clone() const
  32 {
  33         return new InsetMathXArrow(*this);
  34 }
  35
  36
  37 void InsetMathXArrow::metrics(MetricsInfo & mi, Dimension & dim) const
  38 {
  39         ScriptChanger dummy(mi.base);
  40         Dimension dim0;
  41         cell(0).metrics(mi, dim0);
  42         Dimension dim1;
  43         cell(1).metrics(mi, dim1);
  44         dim.wid = max(dim0.width(), dim1.width()) + 10;
  45         dim.asc = dim0.height() + 10;
  46         dim.des = dim1.height();
  47         metricsMarkers(dim);
  48 }
  49
  50
  51 void InsetMathXArrow::draw(PainterInfo & pi, int x, int y) const
  52 {
  53         ScriptChanger dummy(pi.base);
  54         Dimension const dim = dimension(*pi.base.bv);
  55         Dimension const & dim0 = cell(0).dimension(*pi.base.bv);
  56         // center the cells with the decoration
  57         cell(0).draw(pi, x + dim.width()/2 - dim0.width()/2, y - 10);
  58         Dimension const & dim1 = cell(1).dimension(*pi.base.bv);
  59         cell(1).draw(pi, x + dim.width()/2 - dim1.width()/2, y + dim1.height());
  60         mathed_draw_deco(pi, x + 1, y - 7, dim.wid - 2, 5, name_);
  61         drawMarkers(pi, x, y);
  62 }
  63
  64
  65 void InsetMathXArrow::write(WriteStream & os) const
  66 {
  67         MathEnsurer ensurer(os);
  68         os << '\\' << name_;
  69         if (!cell(1).empty())
  70                 os << '[' << cell(1) << ']';
  71         os << '{' << cell(0) << '}';
  72 }
  73
  74
  75 void InsetMathXArrow::normalize(NormalStream & os) const
  76 {
  77         os << "[xarrow " << name_ << ' ' <<  cell(0) << ' ' << cell(1) << ']';
  78 }
  79
  80
  81 void InsetMathXArrow::mathmlize(MathStream & ms) const
  82 {
  83         char const * arrow;
  84
  85         if (name_ == "xleftarrow")
  86                 arrow = "&larr;";
  87         else if (name_ == "xrightarrow")
  88                 arrow = "&rarr;";
  89         else if (name_ == "xhookleftarrow")
  90                 arrow = "&larrhk;";
  91         else if (name_ == "xhookrightarrow")
  92                 arrow = "&rarrhk;";
  93         else if (name_ == "xLeftarrow")
  94                 arrow = "&lArr;";
  95         else if (name_ == "xRightarrow")
  96                 arrow = "&rArr;";
  97         else if (name_ == "xleftrightarrow")
  98                 arrow = "&leftrightarrow;";
  99         else if (name_ == "xLeftrightarrow")
 100                 arrow = "&Leftrightarrow;";
 101         else if (name_ == "xleftharpoondown")
 102                 arrow = "&leftharpoondown;";
 103         else if (name_ == "xleftharpoonup")
 104                 arrow = "&leftharpoonup;";
 105         else if (name_ == "xleftrightharpoons")
 106                 arrow = "&leftrightharpoons;";
 107         else if (name_ == "xrightharpoondown")
 108                 arrow = "&rightharpoondown;";
 109         else if (name_ == "xrightharpoonup")
 110                 arrow = "&rightharpoonup;";
 111         else if (name_ == "xrightleftharpoons")
 112                 arrow = "&rightleftharpoons;";
 113         else if (name_ == "xmapsto")
 114                 arrow = "&mapsto;";
 115         ms << "<munderover accent='false' accentunder='false'>"
 116            << arrow << cell(1) << cell(0)
 117            << "</munderover>";
 118 }
 119
 120
 121 void InsetMathXArrow::htmlize(HtmlStream & os) const
 122 {
 123         char const * arrow;
 124
 125         if (name_ == "xleftarrow")
 126                 arrow = "&larr;";
 127         else if (name_ == "xrightarrow")
 128                 arrow = "&rarr;";
 129         else if (name_ == "xhookleftarrow")
 130                 arrow = "&larrhk;";
 131         else if (name_ == "xhookrightarrow")
 132                 arrow = "&rarrhk;";
 133         else if (name_ == "xLeftarrow")
 134                 arrow = "&lArr;";
 135         else if (name_ == "xRightarrow")
 136                 arrow = "&rArr;";
 137         else if (name_ == "xleftrightarrow")
 138                 arrow = "&leftrightarrow;";
 139         else if (name_ == "xLeftrightarrow")
 140                 arrow = "&Leftrightarrow;";
 141         else if (name_ == "xleftharpoondown")
 142                 arrow = "&leftharpoondown;";
 143         else if (name_ == "xleftharpoonup")
 144                 arrow = "&leftharpoonup;";
 145         else if (name_ == "xleftrightharpoons")
 146                 arrow = "&leftrightharpoons;";
 147         else if (name_ == "xrightharpoondown")
 148                 arrow = "&rightharpoondown;";
 149         else if (name_ == "xrightharpoonup")
 150                 arrow = "&rightharpoonup;";
 151         else if (name_ == "xrightleftharpoons")
 152                 arrow = "&rightleftharpoons;";
 153         else if (name_ == "xmapsto")
 154                 arrow = "&mapsto;";
 155         os << MTag("span", "class='xarrow'")
 156                  << MTag("span", "class='xatop'") << cell(0) << ETag("span")
 157                  << MTag("span", "class='xabottom'") << arrow << ETag("span")
 158                  << ETag("span");
 159 }
 160
 161
 162 void InsetMathXArrow::validate(LaTeXFeatures & features) const
 163 {
 164         if (name_ == "xleftarrow" || name_ == "xrightarrow")
 165                 features.require("amsmath");
 166         else
 167                 features.require("mathtools");
 168         if (features.runparams().math_flavor == OutputParams::MathAsHTML)
 169                 // CSS adapted from eLyXer
 170                 features.addCSSSnippet(
 171                         "span.xarrow{display: inline-block; vertical-align: middle; text-align:center;}\n"
 172                         "span.xatop{display: block;}\n"
 173                         "span.xabottom{display: block;}");
 174         InsetMathNest::validate(features);
 175 }
 176
 177
 178 } // namespace lyx