2 * \file math_charinset.C
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Alejandro Aguilar Sierra
9 * Full author contact details are available in file CREDITS.
14 #include "math_charinset.h"
15 #include "math_support.h"
16 #include "math_mathmlstream.h"
19 #include "dimension.h"
20 #include "textpainter.h"
24 #ifndef CXX_GLOBAL_CSTD
29 extern bool has_math_fonts;
33 bool isBinaryOp(char c)
35 return strchr("+-<>=/*", c);
41 //if (strchr("0123456789;:!|[]().,?+/-*<>=", c)
42 return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z');
48 MathCharInset::MathCharInset(char c)
54 auto_ptr<InsetBase> MathCharInset::clone() const
56 return auto_ptr<InsetBase>(new MathCharInset(*this));
60 void MathCharInset::metrics(MetricsInfo & mi, Dimension & dim) const
63 if (char_ == '=' && has_math_fonts) {
64 FontSetChanger dummy(mi.base, "cmr");
65 mathed_char_dim(mi.base.font, char_, dim);
66 } else if ((char_ == '>' || char_ == '<') && has_math_fonts) {
67 FontSetChanger dummy(mi.base, "cmm");
68 mathed_char_dim(mi.base.font, char_, dim);
69 } else if (!slanted(char_) && mi.base.fontname == "mathnormal") {
70 ShapeChanger dummy(mi.base.font, LyXFont::UP_SHAPE);
71 mathed_char_dim(mi.base.font, char_, dim);
73 mathed_char_dim(mi.base.font, char_, dim);
75 int const em = mathed_char_width(mi.base.font, 'M');
76 if (isBinaryOp(char_))
77 dim.wid += static_cast<int>(0.5*em+0.5);
78 else if (char_ == '\'')
79 dim.wid += static_cast<int>(0.1667*em+0.5);
81 whichFont(font_, code_, mi);
82 mathed_char_dim(font_, char_, dim_);
83 if (isBinaryOp(char_, code_))
84 width_ += 2 * font_metrics::width(' ', font_);
85 lyxerr << "MathCharInset::metrics: " << dim << endl;
90 void MathCharInset::draw(PainterInfo & pi, int x, int y) const
92 //lyxerr << "drawing '" << char_ << "' font: " << pi.base.fontname << endl;
93 int const em = mathed_char_width(pi.base.font, 'M');
94 if (isBinaryOp(char_))
95 x += static_cast<int>(0.25*em+0.5);
96 else if (char_ == '\'')
97 x += static_cast<int>(0.0833*em+0.5);
99 if (char_ == '=' && has_math_fonts) {
100 FontSetChanger dummy(pi.base, "cmr");
101 pi.draw(x, y, char_);
102 } else if ((char_ == '>' || char_ == '<') && has_math_fonts) {
103 FontSetChanger dummy(pi.base, "cmm");
104 pi.draw(x, y, char_);
105 } else if (!slanted(char_) && pi.base.fontname == "mathnormal") {
106 ShapeChanger dummy(pi.base.font, LyXFont::UP_SHAPE);
107 pi.draw(x, y, char_);
109 pi.draw(x, y, char_);
112 drawChar(pain, font_, x, y, char_);
117 void MathCharInset::metricsT(TextMetricsInfo const &, Dimension & dim) const
125 void MathCharInset::drawT(TextPainter & pain, int x, int y) const
127 //lyxerr << "drawing text '" << char_ << "' code: " << code_ << endl;
128 pain.draw(x, y, char_);
132 void MathCharInset::write(WriteStream & os) const
138 void MathCharInset::normalize(NormalStream & os) const
140 os << "[char " << char_ << ' ' << "mathalpha]";
144 void MathCharInset::octave(OctaveStream & os) const
150 bool MathCharInset::isRelOp() const
152 return char_ == '=' || char_ == '<' || char_ == '>';