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