2 * \file InsetMathUnderset.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 "InsetMathUnderset.h"
15 #include "MathStream.h"
18 #include "LaTeXFeatures.h"
24 Inset
* InsetMathUnderset::clone() const
26 return new InsetMathUnderset(*this);
30 void InsetMathUnderset::metrics(MetricsInfo
& mi
, Dimension
& dim
) const
33 cell(1).metrics(mi
, dim1
);
34 FracChanger
dummy(mi
.base
);
36 cell(0).metrics(mi
, dim0
);
37 dim
.wid
= max(dim0
.width(), dim1
.width()) + 4;
38 dim
.asc
= dim1
.ascent();
39 dim
.des
= dim1
.descent() + dim0
.height() + 4;
44 void InsetMathUnderset::draw(PainterInfo
& pi
, int x
, int y
) const
46 Dimension
const dim
= dimension(*pi
.base
.bv
);
47 Dimension
const & dim0
= cell(0).dimension(*pi
.base
.bv
);
48 Dimension
const & dim1
= cell(1).dimension(*pi
.base
.bv
);
49 int m
= x
+ dim
.wid
/ 2;
50 int yo
= y
+ dim1
.descent() + dim0
.ascent() + 1;
51 cell(1).draw(pi
, m
- dim1
.width() / 2, y
);
52 FracChanger
dummy(pi
.base
);
53 cell(0).draw(pi
, m
- dim0
.width() / 2, yo
);
54 drawMarkers(pi
, x
, y
);
58 bool InsetMathUnderset::idxFirst(Cursor
& cur
) const
66 bool InsetMathUnderset::idxLast(Cursor
& cur
) const
69 cur
.pos() = cur
.lastpos();
74 bool InsetMathUnderset::idxUpDown(Cursor
& cur
, bool up
) const
76 idx_type target
= up
; // up ? 1 : 0, since upper cell has idx 1
77 if (cur
.idx() == target
)
80 cur
.pos() = cur
.cell().x2pos(&cur
.bv(), cur
.x_target());
85 void InsetMathUnderset::write(WriteStream
& os
) const
87 MathEnsurer
ensurer(os
);
88 os
<< "\\underset{" << cell(0) << "}{" << cell(1) << '}';
92 void InsetMathUnderset::normalize(NormalStream
& os
) const
94 os
<< "[underset " << cell(0) << ' ' << cell(1) << ']';
98 void InsetMathUnderset::validate(LaTeXFeatures
& features
) const
100 features
.require("amsmath");
101 InsetMathNest::validate(features
);