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use stream-like syntax for LaTeX output
[lyx.git] / src / mathed / math_symbolinset.C
1 #include "math_symbolinset.h"
2 #include "math_parser.h"
3 #include "support.h"
4 #include "support/LOstream.h"
5
6
7 using std::ostream;
8
9 MathSymbolInset::MathSymbolInset(const latexkeys * l)
10         : sym_(l), h_(0) {}
11
12
13 MathInset * MathSymbolInset::clone() const
14 {
15         return new MathSymbolInset(*this);
16 }
17
18
19 void MathSymbolInset::write(MathWriteInfo & os) const
20 {
21         os << '\\' << sym_->name << ' ';
22 }
23
24
25 void MathSymbolInset::writeNormal(ostream & os) const
26 {
27         os << "[" << sym_->name << "] ";
28 }
29
30
31 MathTextCodes MathSymbolInset::code() const
32 {
33         switch(sym_->token) {
34         case LM_TK_CMR:
35                 return LM_TC_CMR;
36         case LM_TK_CMSY:
37                 return LM_TC_CMSY;
38         case LM_TK_CMM:
39                 return LM_TC_CMM;
40         case LM_TK_CMEX:
41                 return LM_TC_CMEX;
42         case LM_TK_MSA:
43                 return LM_TC_MSA;
44         case LM_TK_MSB:
45                 return LM_TC_MSB;
46         default:
47                 return LM_TC_SYMB;
48         }
49 }
50
51
52 MathTextCodes MathSymbolInset::code2() const
53 {
54         if (sym_->token == LM_TK_CMEX)
55                 return LM_TC_BOLDSYMB;
56         else
57                 return LM_TC_SYMB;
58 }
59
60
61 void MathSymbolInset::metrics(MathMetricsInfo const & st) const
62 {
63         size_ = st;
64         MathTextCodes Code = code();
65         if (sym_->latex_font_id > 0 && math_font_available(Code)) {
66                 mathed_char_dim(Code, size(), sym_->latex_font_id,
67                                 ascent_, descent_, width_);
68                 if (Code == LM_TC_CMEX) {
69                         h_ = 4*descent_/5;
70                         ascent_  += h_;
71                         descent_ -= h_;
72                 }
73                 return;
74         }
75
76         if (sym_->id > 0 && sym_->id < 255 && math_font_available(LM_TC_SYMB))
77                 mathed_char_dim(code2(), size(), sym_->id, ascent_, descent_, width_);
78         else
79                 mathed_string_dim(LM_TC_TEX, size(), sym_->name, ascent_, descent_, width_);
80 }
81
82
83 void MathSymbolInset::draw(Painter & pain, int x, int y) const
84 {  
85         xo(x);
86         yo(y);
87         MathTextCodes Code = code();
88         if (sym_->latex_font_id > 0 && math_font_available(Code))
89                 drawChar(pain, Code, size(), x, y - h_, sym_->latex_font_id);
90         else if (sym_->id > 0 && sym_->id < 255 && math_font_available(LM_TC_SYMB))
91                 drawChar(pain, code2(), size(), x, y, sym_->id);
92         else
93                 drawStr(pain, LM_TC_TEX, size(), x, y, sym_->name);
94 }
95
96
97 bool MathSymbolInset::isRelOp() const
98 {
99         return sym_->type == LMB_RELATION;
100 }
101
102
103 bool MathSymbolInset::isScriptable() const
104 {
105         return size() == LM_ST_DISPLAY && sym_->token == LM_TK_CMEX;
106 }
107
108
109 bool MathSymbolInset::takesLimits() const
110 {
111         return sym_->token == LM_TK_CMEX;
112 }