2 * \file InsetMathChar.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 "InsetMathChar.h"
15 #include "MathSupport.h"
16 #include "MathMLStream.h"
19 #include "dimension.h"
20 #include "support/lstrings.h"
21 #include "TextPainter.h"
23 #include "frontends/Application.h"
24 #include "frontends/FontLoader.h"
25 #include "frontends/FontMetrics.h"
29 extern bool has_math_fonts;
33 bool isBinaryOp(char c)
35 return lyx::support::contains("+-<>=/*", c);
41 return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z');
47 InsetMathChar::InsetMathChar(char c)
53 auto_ptr<InsetBase> InsetMathChar::doClone() const
55 return auto_ptr<InsetBase>(new InsetMathChar(*this));
59 void InsetMathChar::metrics(MetricsInfo & mi, Dimension & dim) const
62 if (char_ == '=' && has_math_fonts) {
63 FontSetChanger dummy(mi.base, "cmr");
64 mathed_char_dim(mi.base.font, char_, dim);
65 } else if ((char_ == '>' || char_ == '<') && has_math_fonts) {
66 FontSetChanger dummy(mi.base, "cmm");
67 mathed_char_dim(mi.base.font, char_, dim);
68 } else if (!slanted(char_) && mi.base.fontname == "mathnormal") {
69 ShapeChanger dummy(mi.base.font, LyXFont::UP_SHAPE);
70 mathed_char_dim(mi.base.font, char_, dim);
72 mathed_char_dim(mi.base.font, char_, dim);
74 int const em = mathed_char_width(mi.base.font, 'M');
75 if (isBinaryOp(char_))
76 dim.wid += static_cast<int>(0.5*em+0.5);
77 else if (char_ == '\'')
78 dim.wid += static_cast<int>(0.1667*em+0.5);
80 whichFont(font_, code_, mi);
81 mathed_char_dim(font_, char_, dim_);
82 if (isBinaryOp(char_, code_))
83 width_ += 2 * theApp->fontLoader().metrics(font_).width(' ');
84 lyxerr << "InsetMathChar::metrics: " << dim << endl;
90 void InsetMathChar::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 InsetMathChar::metricsT(TextMetricsInfo const &, Dimension & dim) const
125 void InsetMathChar::drawT(TextPainter & pain, int x, int y) const
127 //lyxerr << "drawing text '" << char_ << "' code: " << code_ << endl;
128 pain.draw(x, y, char_);
132 void InsetMathChar::write(WriteStream & os) const
138 void InsetMathChar::normalize(NormalStream & os) const
140 os << "[char " << char_ << " mathalpha]";
144 void InsetMathChar::octave(OctaveStream & os) const
150 void InsetMathChar::mathmlize(MathMLStream & ms) const
153 case '<': ms << "<"; break;
154 case '>': ms << ">"; break;
155 case '&': ms << "&"; break;
156 default: ms << char_; break;
161 bool InsetMathChar::isRelOp() const
163 return char_ == '=' || char_ == '<' || char_ == '>';