src/mathed/InsetMathCases.cpp

   1 /**
   2  * \file InsetMathCases.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 "InsetMathCases.h"
  14
  15 #include "Cursor.h"
  16 #include "FuncRequest.h"
  17 #include "FuncStatus.h"
  18 #include "support/gettext.h"
  19 #include "LaTeXFeatures.h"
  20 #include "MathData.h"
  21 #include "MathStream.h"
  22 #include "MathSupport.h"
  23 #include "MetricsInfo.h"
  24
  25 #include "support/lstrings.h"
  26
  27 #include <ostream>
  28
  29 using namespace std;
  30 using namespace lyx::support;
  31
  32 namespace lyx {
  33
  34
  35 InsetMathCases::InsetMathCases(Buffer * buf, row_type n)
  36         : InsetMathGrid(buf, 2, n, 'c', from_ascii("ll"))
  37 {}
  38
  39
  40 Inset * InsetMathCases::clone() const
  41 {
  42         return new InsetMathCases(*this);
  43 }
  44
  45
  46 void InsetMathCases::metrics(MetricsInfo & mi, Dimension & dim) const
  47 {
  48         InsetMathGrid::metrics(mi, dim);
  49         dim.wid += 8;
  50 }
  51
  52
  53 Dimension const InsetMathCases::dimension(BufferView const & bv) const
  54 {
  55         Dimension dim = InsetMathGrid::dimension(bv);
  56         dim.wid += 8;
  57         return dim;
  58 }
  59
  60
  61 void InsetMathCases::draw(PainterInfo & pi, int x, int y) const
  62 {
  63         Dimension const dim = dimension(*pi.base.bv);
  64         mathed_draw_deco(pi, x + 1, y - dim.ascent(), 6, dim.height(), from_ascii("{"));
  65         InsetMathGrid::drawWithMargin(pi, x, y, 8, 0);
  66         setPosCache(pi, x, y);
  67 }
  68
  69
  70 void InsetMathCases::doDispatch(Cursor & cur, FuncRequest & cmd)
  71 {
  72         //lyxerr << "*** InsetMathCases: request: " << cmd << endl;
  73         switch (cmd.action) {
  74         case LFUN_TABULAR_FEATURE: {
  75                 docstring const & s = cmd.argument();
  76                 // vertical lines and adding/deleting columns is not allowed for \cases
  77                 if (s == "append-column" || s == "delete-column"
  78                         || s == "add-vline-left" || s == "add-vline-right") {
  79                         cur.undispatched();
  80                         break;
  81                 }
  82                 cur.recordUndo();
  83         }
  84         default:
  85                 InsetMathGrid::doDispatch(cur, cmd);
  86         }
  87 }
  88
  89
  90 bool InsetMathCases::getStatus(Cursor & cur, FuncRequest const & cmd,
  91                 FuncStatus & flag) const
  92 {
  93         switch (cmd.action) {
  94         case LFUN_TABULAR_FEATURE: {
  95                 docstring const & s = cmd.argument();
  96                 if (s == "add-vline-left" || s == "add-vline-right") {
  97                         flag.setEnabled(false);
  98                         flag.message(bformat(
  99                                 from_utf8(N_("No vertical grid lines in 'cases': feature %1$s")),
 100                                 s));
 101                         return true;
 102                 }
 103                 if (s == "append-column" || s == "delete-column") {
 104                         flag.setEnabled(false);
 105                         flag.message(bformat(
 106                                 from_utf8(N_("Changing number of columns not allowed in "
 107                                              "'cases': feature %1$s")), s));
 108                         return true;
 109                 }
 110         }
 111         default:
 112                 return InsetMathGrid::getStatus(cur, cmd, flag);
 113         }
 114 }
 115
 116
 117 void InsetMathCases::write(WriteStream & os) const
 118 {
 119         MathEnsurer ensurer(os);
 120         if (os.fragile())
 121                 os << "\\protect";
 122         os << "\\begin{cases}\n";
 123         InsetMathGrid::write(os);
 124         if (os.fragile())
 125                 os << "\\protect";
 126         os << "\\end{cases}";
 127 }
 128
 129
 130 void InsetMathCases::normalize(NormalStream & os) const
 131 {
 132         os << "[cases ";
 133         InsetMathGrid::normalize(os);
 134         os << ']';
 135 }
 136
 137
 138 void InsetMathCases::maple(MapleStream & os) const
 139 {
 140         os << "cases(";
 141         InsetMathGrid::maple(os);
 142         os << ')';
 143 }
 144
 145
 146 void InsetMathCases::infoize(odocstream & os) const
 147 {
 148         os << "Cases ";
 149 }
 150
 151
 152 void InsetMathCases::validate(LaTeXFeatures & features) const
 153 {
 154         features.require("amsmath");
 155         InsetMathGrid::validate(features);
 156 }
 157
 158
 159 } // namespace lyx