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