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[lyx.git] / src / mathed / math_decorationinset.C
1 #include <config.h>
2
3 #ifdef __GNUG__
4 #pragma implementation
5 #endif
6
7 #include "math_decorationinset.h"
8 #include "mathed/support.h"
9 #include "math_parser.h"
10 #include "support/LOstream.h"
11 #include "support/lstrings.h"
12
13
14 using std::ostream;
15
16
17 MathDecorationInset::MathDecorationInset(int d)
18         : MathInset("", LM_OT_DECO, 1), deco_(d)
19 {
20         upper_ = deco_ != LM_underline && deco_ != LM_underbrace;
21 }
22
23
24 MathInset * MathDecorationInset::clone() const
25 {   
26         return new MathDecorationInset(*this);
27 }
28
29
30
31 void MathDecorationInset::Metrics(MathStyles st)
32 {
33         xcell(0).Metrics(st);
34         width_   = xcell(0).width();
35         ascent_  = xcell(0).ascent();
36         descent_ = xcell(0).descent();
37
38         dh_ = mathed_char_height(LM_TC_VAR, size(), 'I', ascent_, descent_);  
39
40         if (upper_) {
41                 ascent_ += dh_ + 1;
42                 dy_ = -ascent_;
43         } else {
44                 dy_ = descent_ + 1;
45                 descent_ += dh_ + 2;
46         }
47 }
48
49 void MathDecorationInset::draw(Painter & pain, int x, int y)
50
51         xo(x);
52         yo(x);
53         xcell(0).draw(pain, x, y);
54         mathed_draw_deco(pain, x, y + dy_, width_, dh_, deco_);
55 }
56
57
58 void MathDecorationInset::Write(ostream & os, bool fragile) const
59 {
60         latexkeys const * l = lm_get_key_by_id(deco_, LM_TK_WIDE);
61         if (fragile &&
62             (compare(l->name, "overbrace") == 0 ||
63              compare(l->name, "underbrace") == 0 ||
64              compare(l->name, "overleftarrow") == 0 ||
65              compare(l->name, "overrightarrow") == 0))
66                 os << "\\protect";
67         os << '\\' << l->name << '{';
68         cell(0).Write(os, fragile);  
69         os << '}';
70 }