src/mathed/InsetMathPhantom.C

   1 /**
   2  * \file InsetMathPhantom.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Georg Baum
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "InsetMathPhantom.h"
  14 #include "MathMLStream.h"
  15 #include "MathStream.h"
  16
  17 #include "LColor.h"
  18
  19 #include "frontends/Painter.h"
  20
  21 #include "support/std_ostream.h"
  22
  23
  24 namespace lyx {
  25
  26
  27 InsetMathPhantom::InsetMathPhantom(Kind k)
  28         : InsetMathNest(1), kind_(k)
  29 {}
  30
  31
  32 std::auto_ptr<InsetBase> InsetMathPhantom::doClone() const
  33 {
  34         return std::auto_ptr<InsetBase>(new InsetMathPhantom(*this));
  35 }
  36
  37
  38 void InsetMathPhantom::metrics(MetricsInfo & mi, Dimension & dim) const
  39 {
  40         cell(0).metrics(mi, dim);
  41         metricsMarkers(dim);
  42         dim_ = dim;
  43 }
  44
  45
  46 void InsetMathPhantom::draw(PainterInfo & pi, int x, int y) const
  47 {
  48         static int const arrow_size = 4;
  49
  50         // We first draw the text and then an arrow
  51         LColor_color const origcol = pi.base.font.color();
  52         pi.base.font.setColor(LColor::special);
  53         cell(0).draw(pi, x + 1, y);
  54         pi.base.font.setColor(origcol);
  55
  56         if (kind_ == phantom || kind_ == vphantom) {
  57                 // y1---------
  58                 //           / \.
  59                 // y2-----  / | \.
  60                 //            |
  61                 //            |
  62                 // y3-----  \ | /
  63                 //           \ /
  64                 // y4---------
  65                 //          | | |
  66                 //         /  |  \.
  67                 //        x1  x2 x3
  68
  69                 int const x2 = x + dim_.wid / 2;
  70                 int const x1 = x2 - arrow_size;
  71                 int const x3 = x2 + arrow_size;
  72
  73                 int const y1 = y - dim_.asc;
  74                 int const y2 = y1 + arrow_size;
  75                 int const y4 = y + dim_.des;
  76                 int const y3 = y4 - arrow_size;
  77
  78                 // top arrow
  79                 pi.pain.line(x2, y1, x1, y2, LColor::added_space);
  80                 pi.pain.line(x2, y1, x3, y2, LColor::added_space);
  81
  82                 // bottom arrow
  83                 pi.pain.line(x2, y4, x1, y3, LColor::added_space);
  84                 pi.pain.line(x2, y4, x3, y3, LColor::added_space);
  85
  86                 // joining line
  87                 pi.pain.line(x2, y1, x2, y4, LColor::added_space);
  88         }
  89
  90         if (kind_ == phantom || kind_ == hphantom) {
  91                 // y1----   /          \.
  92                 //        /              \.
  93                 // y2--- <---------------->
  94                 //        \              /
  95                 // y3----   \          /
  96                 //       |   |        |   |
  97                 //      x1  x2       x3  x4
  98
  99                 int const x1 = x;
 100                 int const x2 = x + arrow_size;
 101                 int const x4 = x + dim_.wid;
 102                 int const x3 = x4 - arrow_size;
 103
 104                 int const y2 = y + (dim_.des - dim_.asc) / 2;
 105                 int const y1 = y2 - arrow_size;
 106                 int const y3 = y2 + arrow_size;
 107
 108                 // left arrow
 109                 pi.pain.line(x1, y2, x2, y3, LColor::added_space);
 110                 pi.pain.line(x1, y2, x2, y1, LColor::added_space);
 111
 112                 // right arrow
 113                 pi.pain.line(x4, y2, x3, y3, LColor::added_space);
 114                 pi.pain.line(x4, y2, x3, y1, LColor::added_space);
 115
 116                 // joining line
 117                 pi.pain.line(x1, y2, x4, y2, LColor::added_space);
 118         }
 119
 120         drawMarkers(pi, x, y);
 121 }
 122
 123
 124 void InsetMathPhantom::write(WriteStream & os) const
 125 {
 126         switch (kind_) {
 127         case phantom:
 128                 os << "\\phantom{";
 129                 break;
 130         case vphantom:
 131                 os << "\\vphantom{";
 132                 break;
 133         case hphantom:
 134                 os << "\\hphantom{";
 135                 break;
 136         }
 137         os << cell(0) << '}';
 138 }
 139
 140
 141 void InsetMathPhantom::normalize(NormalStream & os) const
 142 {
 143         switch (kind_) {
 144         case phantom:
 145                 os << "[phantom ";
 146                 break;
 147         case vphantom:
 148                 os << "[vphantom ";
 149                 break;
 150         case hphantom:
 151                 os << "[hphantom ";
 152                 break;
 153         }
 154         os << cell(0) << ']';
 155 }
 156
 157
 158 void InsetMathPhantom::infoize(std::ostream & os) const
 159 {
 160         switch (kind_) {
 161         case phantom:
 162                 os << "Phantom";
 163                 break;
 164         case vphantom:
 165                 os << "Vphantom";
 166                 break;
 167         case hphantom:
 168                 os << "Hphantom";
 169                 break;
 170         }
 171 }
 172
 173
 174 } // namespace lyx