2 * \file InsetMathCases.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
8 * Full author contact details are available in file CREDITS.
13 #include "InsetMathCases.h"
16 #include "FuncRequest.h"
17 #include "FuncStatus.h"
18 #include "support/gettext.h"
19 #include "LaTeXFeatures.h"
21 #include "MathStream.h"
22 #include "MathSupport.h"
23 #include "MetricsInfo.h"
25 #include "support/lstrings.h"
30 using namespace lyx::support;
35 InsetMathCases::InsetMathCases(Buffer * buf, row_type n)
36 : InsetMathGrid(buf, 2, n, 'c', from_ascii("ll"))
40 Inset * InsetMathCases::clone() const
42 return new InsetMathCases(*this);
46 void InsetMathCases::metrics(MetricsInfo & mi, Dimension & dim) const
48 InsetMathGrid::metrics(mi, dim);
53 Dimension const InsetMathCases::dimension(BufferView const & bv) const
55 Dimension dim = InsetMathGrid::dimension(bv);
61 void InsetMathCases::draw(PainterInfo & pi, int x, int y) const
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);
70 void InsetMathCases::doDispatch(Cursor & cur, FuncRequest & cmd)
72 //lyxerr << "*** InsetMathCases: request: " << cmd << endl;
73 switch (cmd.action()) {
74 case LFUN_INSET_MODIFY: {
75 istringstream is(to_utf8(cmd.argument()));
81 // vertical lines and adding/deleting columns is not allowed for \cases
82 if (s == "append-column" || s == "delete-column"
83 || s == "add-vline-left" || s == "add-vline-right") {
92 InsetMathGrid::doDispatch(cur, cmd);
96 bool InsetMathCases::getStatus(Cursor & cur, FuncRequest const & cmd,
97 FuncStatus & flag) const
99 switch (cmd.action()) {
100 case LFUN_INSET_MODIFY: {
101 istringstream is(to_utf8(cmd.argument()));
107 if (s == "add-vline-left" || s == "add-vline-right") {
108 flag.setEnabled(false);
109 flag.message(bformat(
110 from_utf8(N_("No vertical grid lines in 'cases': feature %1$s")),
114 if (s == "append-column" || s == "delete-column") {
115 flag.setEnabled(false);
116 flag.message(bformat(
117 from_utf8(N_("Changing number of columns not allowed in "
118 "'cases': feature %1$s")), from_utf8(s)));
126 return InsetMathGrid::getStatus(cur, cmd, flag);
130 void InsetMathCases::write(WriteStream & os) const
132 MathEnsurer ensurer(os);
135 os << "\\begin{cases}\n";
136 InsetMathGrid::write(os);
139 os << "\\end{cases}";
143 void InsetMathCases::normalize(NormalStream & os) const
146 InsetMathGrid::normalize(os);
151 void InsetMathCases::maple(MapleStream & os) const
154 InsetMathGrid::maple(os);
159 void InsetMathCases::mathmlize(MathStream & ms) const
161 ms << "<mo form='prefix' fence='true' stretchy='true' symmetric='true'>{</mo>";
162 InsetMathGrid::mathmlize(ms);
167 // We need a brace here, somehow.
168 void InsetMathCases::htmlize(HtmlStream & ms) const
170 InsetMathGrid::htmlize(ms, "class='cases'");
174 void InsetMathCases::infoize(odocstream & os) const
180 void InsetMathCases::validate(LaTeXFeatures & features) const
182 features.require("amsmath");
183 InsetMathGrid::validate(features);
184 if (features.runparams().math_flavor == OutputParams::MathAsHTML)
185 // CSS based on eLyXer's
186 features.addCSSSnippet(
187 "table.cases{display: inline-block; text-align: center;"
188 "border-left: thin solid black; vertical-align: middle; padding-left: 0.5ex;}\n"
189 "table.cases td {text-align: left;}");