mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-11-16 07:55:41 +00:00
958 lines
21 KiB
C++
958 lines
21 KiB
C++
/**
|
||
* \file MathSupport.cpp
|
||
* This file is part of LyX, the document processor.
|
||
* Licence details can be found in the file COPYING.
|
||
*
|
||
* \author Alejandro Aguilar Sierra
|
||
* \author André Pönitz
|
||
*
|
||
* Full author contact details are available in file CREDITS.
|
||
*/
|
||
|
||
#include <config.h>
|
||
|
||
#include "MathSupport.h"
|
||
|
||
#include "InsetMathFont.h"
|
||
#include "InsetMathSymbol.h"
|
||
#include "MathData.h"
|
||
#include "MathParser.h"
|
||
#include "MathStream.h"
|
||
|
||
#include "MetricsInfo.h"
|
||
|
||
#include "frontends/FontLoader.h"
|
||
#include "frontends/FontMetrics.h"
|
||
#include "frontends/Painter.h"
|
||
|
||
#include "support/debug.h"
|
||
#include "support/docstream.h"
|
||
#include "support/lyxlib.h"
|
||
|
||
#include <map>
|
||
#include <algorithm>
|
||
|
||
using namespace std;
|
||
|
||
namespace lyx {
|
||
|
||
using frontend::Painter;
|
||
|
||
|
||
///
|
||
class Matrix {
|
||
public:
|
||
///
|
||
Matrix(int, double, double);
|
||
///
|
||
void transform(double &, double &);
|
||
private:
|
||
///
|
||
double m_[2][2];
|
||
};
|
||
|
||
|
||
Matrix::Matrix(int code, double x, double y)
|
||
{
|
||
double const cs = (code & 1) ? 0 : (1 - code);
|
||
double const sn = (code & 1) ? (2 - code) : 0;
|
||
m_[0][0] = cs * x;
|
||
m_[0][1] = sn * x;
|
||
m_[1][0] = -sn * y;
|
||
m_[1][1] = cs * y;
|
||
}
|
||
|
||
|
||
void Matrix::transform(double & x, double & y)
|
||
{
|
||
double xx = m_[0][0] * x + m_[0][1] * y;
|
||
double yy = m_[1][0] * x + m_[1][1] * y;
|
||
x = xx;
|
||
y = yy;
|
||
}
|
||
|
||
|
||
|
||
namespace {
|
||
|
||
/*
|
||
* Internal struct of a drawing: code n x1 y1 ... xn yn, where code is:
|
||
* 0 = end, 1 = line, 2 = polyline, 3 = square line, 4 = square polyline
|
||
*/
|
||
|
||
|
||
double const parenthHigh[] = {
|
||
2, 13,
|
||
0.9840, 0.0014, 0.7143, 0.0323, 0.4603, 0.0772,
|
||
0.2540, 0.1278, 0.1746, 0.1966, 0.0952, 0.3300,
|
||
0.0950, 0.5000, 0.0952, 0.6700, 0.1746, 0.8034,
|
||
0.2540, 0.8722, 0.4603, 0.9228, 0.7143, 0.9677,
|
||
0.9840, 0.9986,
|
||
0
|
||
};
|
||
|
||
|
||
double const parenth[] = {
|
||
2, 13,
|
||
0.9930, 0.0071, 0.7324, 0.0578, 0.5141, 0.1126,
|
||
0.3380, 0.1714, 0.2183, 0.2333, 0.0634, 0.3621,
|
||
0.0141, 0.5000, 0.0563, 0.6369, 0.2113, 0.7647,
|
||
0.3310, 0.8276, 0.5070, 0.8864, 0.7254, 0.9412,
|
||
0.9930, 0.9919,
|
||
0
|
||
};
|
||
|
||
|
||
double const brace[] = {
|
||
2, 21,
|
||
0.9492, 0.0020, 0.9379, 0.0020, 0.7458, 0.0243,
|
||
0.5819, 0.0527, 0.4859, 0.0892, 0.4463, 0.1278,
|
||
0.4463, 0.3732, 0.4011, 0.4199, 0.2712, 0.4615,
|
||
0.0734, 0.4919, 0.0113, 0.5000, 0.0734, 0.5081,
|
||
0.2712, 0.5385, 0.4011, 0.5801, 0.4463, 0.6268,
|
||
0.4463, 0.8722, 0.4859, 0.9108, 0.5819, 0.9473,
|
||
0.7458, 0.9757, 0.9379, 0.9980, 0.9492, 0.9980,
|
||
0
|
||
};
|
||
|
||
|
||
double const mapsto[] = {
|
||
2, 3,
|
||
0.75, 0.015, 0.95, 0.5, 0.75, 0.985,
|
||
1, 0.015, 0.475, 0.945, 0.475,
|
||
1, 0.015, 0.015, 0.015, 0.985,
|
||
0
|
||
};
|
||
|
||
|
||
double const lhook[] = {
|
||
2, 3,
|
||
0.25, 0.015, 0.05, 0.5, 0.25, 0.985,
|
||
1, 0.015, 0.475, 0.7, 0.475,
|
||
2, 5,
|
||
0.7, 0.015, 0.825, 0.15, 0.985, 0.25,
|
||
0.825, 0.35, 0.7, 0.475,
|
||
0
|
||
};
|
||
|
||
|
||
double const rhook[] = {
|
||
2, 3,
|
||
0.75, 0.015, 0.95, 0.5, 0.75, 0.985,
|
||
1, 0.3, 0.475, 0.985, 0.475,
|
||
2, 5,
|
||
0.3, 0.015, 0.175, 0.15, 0.05, 0.25,
|
||
0.175, 0.35, 0.3, 0.475,
|
||
0
|
||
};
|
||
|
||
|
||
double const LRArrow[] = {
|
||
2, 3,
|
||
0.25, 0.015, 0.05, 0.5, 0.25, 0.985,
|
||
2, 3,
|
||
0.75, 0.015, 0.95, 0.5, 0.75, 0.985,
|
||
1, 0.2, 0.8, 0.8, 0.8,
|
||
1, 0.2, 0.2, 0.8, 0.2,
|
||
0
|
||
};
|
||
|
||
|
||
double const LArrow[] = {
|
||
2, 3,
|
||
0.25, 0.015, 0.05, 0.5, 0.25, 0.985,
|
||
1, 0.2, 0.8, 0.985, 0.8,
|
||
1, 0.2, 0.2, 0.985, 0.2,
|
||
0
|
||
};
|
||
|
||
|
||
double const lharpoondown[] = {
|
||
2, 2,
|
||
0.015, 0.5, 0.25, 0.985,
|
||
1, 0.02, 0.475, 0.985, 0.475,
|
||
0
|
||
};
|
||
|
||
|
||
double const lharpoonup[] = {
|
||
2, 2,
|
||
0.25, 0.015, 0.015, 0.5,
|
||
1, 0.02, 0.525, 0.985, 0.525,
|
||
0
|
||
};
|
||
|
||
|
||
double const lrharpoons[] = {
|
||
2, 2,
|
||
0.25, 0.015, 0.015, 0.225,
|
||
1, 0.02, 0.23, 0.985, 0.23,
|
||
2, 2,
|
||
0.75, 0.985, 0.985, 0.775,
|
||
1, 0.02, 0.7, 0.980, 0.7,
|
||
0
|
||
};
|
||
|
||
|
||
double const rlharpoons[] = {
|
||
2, 2,
|
||
0.75, 0.015, 0.985, 0.225,
|
||
1, 0.02, 0.23, 0.985, 0.23,
|
||
2, 2,
|
||
0.25, 0.985, 0.015, 0.775,
|
||
1, 0.02, 0.7, 0.980, 0.7,
|
||
0
|
||
};
|
||
|
||
|
||
double const arrow[] = {
|
||
4, 7,
|
||
0.0150, 0.7500, 0.2000, 0.6000, 0.3500, 0.3500,
|
||
0.5000, 0.0500, 0.6500, 0.3500, 0.8000, 0.6000,
|
||
0.9500, 0.7500,
|
||
3, 0.5000, 0.1500, 0.5000, 0.9500,
|
||
0
|
||
};
|
||
|
||
|
||
double const Arrow[] = {
|
||
4, 7,
|
||
0.0150, 0.7500, 0.2000, 0.6000, 0.3500, 0.3500,
|
||
0.5000, 0.0500, 0.6500, 0.3500, 0.8000, 0.6000,
|
||
0.9500, 0.7500,
|
||
3, 0.3500, 0.5000, 0.3500, 0.9500,
|
||
3, 0.6500, 0.5000, 0.6500, 0.9500,
|
||
0
|
||
};
|
||
|
||
|
||
double const udarrow[] = {
|
||
2, 3,
|
||
0.015, 0.25, 0.5, 0.05, 0.95, 0.25,
|
||
2, 3,
|
||
0.015, 0.75, 0.5, 0.95, 0.95, 0.75,
|
||
1, 0.5, 0.1, 0.5, 0.9,
|
||
0
|
||
};
|
||
|
||
|
||
double const Udarrow[] = {
|
||
2, 3,
|
||
0.015, 0.25, 0.5, 0.05, 0.95, 0.25,
|
||
2, 3,
|
||
0.015, 0.75, 0.5, 0.95, 0.95, 0.75,
|
||
1, 0.35, 0.2, 0.35, 0.8,
|
||
1, 0.65, 0.2, 0.65, 0.8,
|
||
0
|
||
};
|
||
|
||
|
||
double const brack[] = {
|
||
2, 4,
|
||
0.95, 0.05, 0.05, 0.05, 0.05, 0.95, 0.95, 0.95,
|
||
0
|
||
};
|
||
|
||
|
||
double const dbrack[] = {
|
||
2, 4,
|
||
0.95, 0.05, 0.05, 0.05, 0.05, 0.95, 0.95, 0.95,
|
||
2, 2,
|
||
0.50, 0.05, 0.50, 0.95,
|
||
0
|
||
};
|
||
|
||
|
||
double const corner[] = {
|
||
2, 3,
|
||
0.95, 0.05, 0.05, 0.05, 0.05, 0.95,
|
||
0
|
||
};
|
||
|
||
|
||
double const angle[] = {
|
||
2, 3,
|
||
1, 0, 0.05, 0.5, 1, 1,
|
||
0
|
||
};
|
||
|
||
|
||
double const slash[] = {
|
||
1, 0.95, 0.05, 0.05, 0.95,
|
||
0
|
||
};
|
||
|
||
|
||
double const hline[] = {
|
||
1, 0.00, 0.5, 1.0, 0.5,
|
||
0
|
||
};
|
||
|
||
|
||
double const ddot[] = {
|
||
1, 0.2, 0.5, 0.3, 0.5,
|
||
1, 0.7, 0.5, 0.8, 0.5,
|
||
0
|
||
};
|
||
|
||
|
||
double const dddot[] = {
|
||
1, 0.1, 0.5, 0.2, 0.5,
|
||
1, 0.45, 0.5, 0.55, 0.5,
|
||
1, 0.8, 0.5, 0.9, 0.5,
|
||
0
|
||
};
|
||
|
||
|
||
double const ddddot[] = {
|
||
1, 0.1, 0.5, 0.2, 0.5,
|
||
1, 0.45, 0.5, 0.55, 0.5,
|
||
1, 0.8, 0.5, 0.9, 0.5,
|
||
1, 1.15, 0.5, 1.25, 0.5,
|
||
0
|
||
};
|
||
|
||
|
||
double const hline3[] = {
|
||
1, 0.1, 0, 0.15, 0,
|
||
1, 0.475, 0, 0.525, 0,
|
||
1, 0.85, 0, 0.9, 0,
|
||
0
|
||
};
|
||
|
||
|
||
double const dline3[] = {
|
||
1, 0.1, 0.1, 0.15, 0.15,
|
||
1, 0.475, 0.475, 0.525, 0.525,
|
||
1, 0.85, 0.85, 0.9, 0.9,
|
||
0
|
||
};
|
||
|
||
|
||
double const hlinesmall[] = {
|
||
1, 0.4, 0.5, 0.6, 0.5,
|
||
0
|
||
};
|
||
|
||
|
||
double const ring[] = {
|
||
2, 5,
|
||
0.5, 0.8, 0.8, 0.5, 0.5, 0.2, 0.2, 0.5, 0.5, 0.8,
|
||
0
|
||
};
|
||
|
||
|
||
double const vert[] = {
|
||
1, 0.5, 0.05, 0.5, 0.95,
|
||
0
|
||
};
|
||
|
||
|
||
double const Vert[] = {
|
||
1, 0.3, 0.05, 0.3, 0.95,
|
||
1, 0.7, 0.05, 0.7, 0.95,
|
||
0
|
||
};
|
||
|
||
|
||
double const tilde[] = {
|
||
2, 4,
|
||
0.00, 0.8, 0.25, 0.2, 0.75, 0.8, 1.00, 0.2,
|
||
0
|
||
};
|
||
|
||
|
||
struct deco_struct {
|
||
double const * data;
|
||
int angle;
|
||
};
|
||
|
||
struct named_deco_struct {
|
||
char const * name;
|
||
double const * data;
|
||
int angle;
|
||
};
|
||
|
||
named_deco_struct deco_table[] = {
|
||
// Decorations
|
||
{"widehat", angle, 3 },
|
||
{"widetilde", tilde, 0 },
|
||
{"underbar", hline, 0 },
|
||
{"underline", hline, 0 },
|
||
{"overline", hline, 0 },
|
||
{"underbrace", brace, 1 },
|
||
{"overbrace", brace, 3 },
|
||
{"overleftarrow", arrow, 1 },
|
||
{"overrightarrow", arrow, 3 },
|
||
{"overleftrightarrow", udarrow, 1 },
|
||
{"xhookleftarrow", lhook, 0 },
|
||
{"xhookrightarrow", rhook, 0 },
|
||
{"xleftarrow", arrow, 1 },
|
||
{"xLeftarrow", LArrow, 0 },
|
||
{"xleftharpoondown", lharpoondown, 0 },
|
||
{"xleftharpoonup", lharpoonup, 0 },
|
||
{"xleftrightharpoons", lrharpoons, 0 },
|
||
{"xleftrightarrow", udarrow, 1 },
|
||
{"xLeftrightarrow", LRArrow, 0 },
|
||
{"xmapsto", mapsto, 0 },
|
||
{"xrightarrow", arrow, 3 },
|
||
{"xRightarrow", LArrow, 2 },
|
||
{"xrightharpoondown", lharpoonup, 2 },
|
||
{"xrightharpoonup", lharpoondown, 2 },
|
||
{"xrightleftharpoons", rlharpoons, 0 },
|
||
{"underleftarrow", arrow, 1 },
|
||
{"underrightarrow", arrow, 3 },
|
||
{"underleftrightarrow", udarrow, 1 },
|
||
{"undertilde", tilde, 0 },
|
||
{"utilde", tilde, 0 },
|
||
|
||
// Delimiters
|
||
{"(", parenth, 0 },
|
||
{")", parenth, 2 },
|
||
{"{", brace, 0 },
|
||
{"}", brace, 2 },
|
||
{"lbrace", brace, 0 },
|
||
{"rbrace", brace, 2 },
|
||
{"[", brack, 0 },
|
||
{"]", brack, 2 },
|
||
{"llbracket", dbrack, 0 },
|
||
{"rrbracket", dbrack, 2 },
|
||
{"|", vert, 0 },
|
||
{"/", slash, 0 },
|
||
{"slash", slash, 0 },
|
||
{"vert", vert, 0 },
|
||
{"lvert", vert, 0 },
|
||
{"rvert", vert, 0 },
|
||
{"Vert", Vert, 0 },
|
||
{"lVert", Vert, 0 },
|
||
{"rVert", Vert, 0 },
|
||
{"'", slash, 1 },
|
||
{"<", angle, 0 },
|
||
{">", angle, 2 },
|
||
{"\\", slash, 1 },
|
||
{"backslash", slash, 1 },
|
||
{"langle", angle, 0 },
|
||
{"lceil", corner, 0 },
|
||
{"lfloor", corner, 1 },
|
||
{"rangle", angle, 2 },
|
||
{"rceil", corner, 3 },
|
||
{"rfloor", corner, 2 },
|
||
{"downarrow", arrow, 2 },
|
||
{"Downarrow", Arrow, 2 },
|
||
{"uparrow", arrow, 0 },
|
||
{"Uparrow", Arrow, 0 },
|
||
{"updownarrow", udarrow, 0 },
|
||
{"Updownarrow", Udarrow, 0 },
|
||
|
||
// Accents
|
||
{"ddot", ddot, 0 },
|
||
{"dddot", dddot, 0 },
|
||
{"ddddot", ddddot, 0 },
|
||
{"hat", angle, 3 },
|
||
{"grave", slash, 1 },
|
||
{"acute", slash, 0 },
|
||
{"tilde", tilde, 0 },
|
||
{"bar", hline, 0 },
|
||
{"dot", hlinesmall, 0 },
|
||
{"check", angle, 1 },
|
||
{"breve", parenth, 1 },
|
||
{"vec", arrow, 3 },
|
||
{"mathring", ring, 0 },
|
||
|
||
// Dots
|
||
{"dots", hline3, 0 },
|
||
{"ldots", hline3, 0 },
|
||
{"cdots", hline3, 0 },
|
||
{"vdots", hline3, 1 },
|
||
{"ddots", dline3, 0 },
|
||
{"adots", dline3, 1 },
|
||
{"iddots", dline3, 1 },
|
||
{"dotsb", hline3, 0 },
|
||
{"dotsc", hline3, 0 },
|
||
{"dotsi", hline3, 0 },
|
||
{"dotsm", hline3, 0 },
|
||
{"dotso", hline3, 0 }
|
||
};
|
||
|
||
|
||
map<docstring, deco_struct> deco_list;
|
||
|
||
// sort the table on startup
|
||
class init_deco_table {
|
||
public:
|
||
init_deco_table() {
|
||
unsigned const n = sizeof(deco_table) / sizeof(deco_table[0]);
|
||
for (named_deco_struct * p = deco_table; p != deco_table + n; ++p) {
|
||
deco_struct d;
|
||
d.data = p->data;
|
||
d.angle = p->angle;
|
||
deco_list[from_ascii(p->name)] = d;
|
||
}
|
||
}
|
||
};
|
||
|
||
static init_deco_table dummy;
|
||
|
||
|
||
deco_struct const * search_deco(docstring const & name)
|
||
{
|
||
map<docstring, deco_struct>::const_iterator p = deco_list.find(name);
|
||
return p == deco_list.end() ? 0 : &(p->second);
|
||
}
|
||
|
||
|
||
} // namespace anon
|
||
|
||
|
||
int mathed_font_em(FontInfo const & font)
|
||
{
|
||
return theFontMetrics(font).em();
|
||
}
|
||
|
||
/* The math units. Quoting TeX by Topic, p.205:
|
||
*
|
||
* Spacing around mathematical objects is measured in mu units. A mu
|
||
* is 1/18th part of \fontdimen6 of the font in family 2 in the
|
||
* current style, the ‘quad’ value of the symbol font.
|
||
*
|
||
* A \thickmuskip (default value in plain TeX: 5mu plus 5mu) is
|
||
* inserted around (binary) relations, except where these are preceded
|
||
* or followed by other relations or punctuation, and except if they
|
||
* follow an open, or precede a close symbol.
|
||
*
|
||
* A \medmuskip (default value in plain TeX: 4mu plus 2mu minus 4mu)
|
||
* is put around binary operators.
|
||
*
|
||
* A \thinmuskip (default value in plain TeX: 3mu) follows after
|
||
* punctuation, and is put around inner objects, except where these
|
||
* are followed by a close or preceded by an open symbol, and except
|
||
* if the other object is a large operator or a binary relation.
|
||
*/
|
||
|
||
int mathed_thinmuskip(FontInfo font)
|
||
{
|
||
font.setFamily(SYMBOL_FAMILY);
|
||
return support::iround(3.0 / 18 * theFontMetrics(font).em());
|
||
}
|
||
|
||
|
||
int mathed_medmuskip(FontInfo font)
|
||
{
|
||
font.setFamily(SYMBOL_FAMILY);
|
||
return support::iround(4.0 / 18 * theFontMetrics(font).em());
|
||
}
|
||
|
||
|
||
int mathed_thickmuskip(FontInfo font)
|
||
{
|
||
font.setFamily(SYMBOL_FAMILY);
|
||
return support::iround(5.0 / 18 * theFontMetrics(font).em());
|
||
}
|
||
|
||
|
||
int mathed_char_width(FontInfo const & font, char_type c)
|
||
{
|
||
return theFontMetrics(font).width(c);
|
||
}
|
||
|
||
|
||
int mathed_char_kerning(FontInfo const & font, char_type c)
|
||
{
|
||
frontend::FontMetrics const & fm = theFontMetrics(font);
|
||
return fm.rbearing(c) - fm.width(c);
|
||
}
|
||
|
||
|
||
void mathed_string_dim(FontInfo const & font,
|
||
docstring const & s,
|
||
Dimension & dim)
|
||
{
|
||
frontend::FontMetrics const & fm = theFontMetrics(font);
|
||
dim.asc = 0;
|
||
dim.des = 0;
|
||
for (docstring::const_iterator it = s.begin();
|
||
it != s.end();
|
||
++it) {
|
||
dim.asc = max(dim.asc, fm.ascent(*it));
|
||
dim.des = max(dim.des, fm.descent(*it));
|
||
}
|
||
dim.wid = fm.width(s);
|
||
}
|
||
|
||
|
||
int mathed_string_width(FontInfo const & font, docstring const & s)
|
||
{
|
||
return theFontMetrics(font).width(s);
|
||
}
|
||
|
||
|
||
void mathed_draw_deco(PainterInfo & pi, int x, int y, int w, int h,
|
||
docstring const & name)
|
||
{
|
||
if (name == ".") {
|
||
pi.pain.line(x + w/2, y, x + w/2, y + h,
|
||
Color_cursor, Painter::line_onoffdash);
|
||
return;
|
||
}
|
||
|
||
deco_struct const * mds = search_deco(name);
|
||
if (!mds) {
|
||
lyxerr << "Deco was not found. Programming error?" << endl;
|
||
lyxerr << "name: '" << to_utf8(name) << "'" << endl;
|
||
return;
|
||
}
|
||
|
||
int const n = (w < h) ? w : h;
|
||
int const r = mds->angle;
|
||
double const * d = mds->data;
|
||
|
||
if (h > 70 && (name == "(" || name == ")"))
|
||
d = parenthHigh;
|
||
|
||
Matrix mt(r, w, h);
|
||
Matrix sqmt(r, n, n);
|
||
|
||
if (r > 0 && r < 3)
|
||
y += h;
|
||
|
||
if (r >= 2)
|
||
x += w;
|
||
|
||
for (int i = 0; d[i]; ) {
|
||
int code = int(d[i++]);
|
||
if (code & 1) { // code == 1 || code == 3
|
||
double xx = d[i++];
|
||
double yy = d[i++];
|
||
double x2 = d[i++];
|
||
double y2 = d[i++];
|
||
if (code == 3)
|
||
sqmt.transform(xx, yy);
|
||
else
|
||
mt.transform(xx, yy);
|
||
mt.transform(x2, y2);
|
||
pi.pain.line(
|
||
int(x + xx + 0.5), int(y + yy + 0.5),
|
||
int(x + x2 + 0.5), int(y + y2 + 0.5),
|
||
pi.base.font.color());
|
||
} else {
|
||
int xp[32];
|
||
int yp[32];
|
||
int const n = int(d[i++]);
|
||
for (int j = 0; j < n; ++j) {
|
||
double xx = d[i++];
|
||
double yy = d[i++];
|
||
// lyxerr << ' ' << xx << ' ' << yy << ' ';
|
||
if (code == 4)
|
||
sqmt.transform(xx, yy);
|
||
else
|
||
mt.transform(xx, yy);
|
||
xp[j] = int(x + xx + 0.5);
|
||
yp[j] = int(y + yy + 0.5);
|
||
// lyxerr << "P[" << j ' ' << xx << ' ' << yy << ' ' << x << ' ' << y << ']';
|
||
}
|
||
pi.pain.lines(xp, yp, n, pi.base.font.color());
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
void metricsStrRedBlack(MetricsInfo & mi, Dimension & dim, docstring const & str)
|
||
{
|
||
FontInfo font = mi.base.font;
|
||
augmentFont(font, "mathnormal");
|
||
mathed_string_dim(font, str, dim);
|
||
}
|
||
|
||
|
||
void drawStrRed(PainterInfo & pi, int x, int y, docstring const & str)
|
||
{
|
||
FontInfo f = pi.base.font;
|
||
augmentFont(f, "mathnormal");
|
||
f.setColor(Color_latex);
|
||
pi.pain.text(x, y, str, f);
|
||
}
|
||
|
||
|
||
void drawStrBlack(PainterInfo & pi, int x, int y, docstring const & str)
|
||
{
|
||
FontInfo f = pi.base.font;
|
||
augmentFont(f, "mathnormal");
|
||
f.setColor(Color_foreground);
|
||
pi.pain.text(x, y, str, f);
|
||
}
|
||
|
||
|
||
void math_font_max_dim(FontInfo const & font, int & asc, int & des)
|
||
{
|
||
frontend::FontMetrics const & fm = theFontMetrics(font);
|
||
asc = fm.maxAscent();
|
||
des = fm.maxDescent();
|
||
}
|
||
|
||
|
||
struct fontinfo {
|
||
string cmd_;
|
||
FontFamily family_;
|
||
FontSeries series_;
|
||
FontShape shape_;
|
||
ColorCode color_;
|
||
};
|
||
|
||
|
||
FontFamily const inh_family = INHERIT_FAMILY;
|
||
FontSeries const inh_series = INHERIT_SERIES;
|
||
FontShape const inh_shape = INHERIT_SHAPE;
|
||
|
||
|
||
// mathnormal should be the first, otherwise the fallback further down
|
||
// does not work
|
||
fontinfo fontinfos[] = {
|
||
// math fonts
|
||
{"mathnormal", ROMAN_FAMILY, MEDIUM_SERIES,
|
||
ITALIC_SHAPE, Color_math},
|
||
{"mathbf", inh_family, BOLD_SERIES,
|
||
inh_shape, Color_math},
|
||
{"mathcal", CMSY_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"mathfrak", EUFRAK_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"mathrm", ROMAN_FAMILY, inh_series,
|
||
UP_SHAPE, Color_math},
|
||
{"mathsf", SANS_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"mathbb", MSB_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"mathtt", TYPEWRITER_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"mathit", inh_family, inh_series,
|
||
ITALIC_SHAPE, Color_math},
|
||
{"mathscr", RSFS_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"cmex", CMEX_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"cmm", CMM_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"cmr", CMR_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"cmsy", CMSY_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"eufrak", EUFRAK_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"msa", MSA_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"msb", MSB_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"stmry", STMARY_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"wasy", WASY_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"esint", ESINT_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
|
||
// Text fonts
|
||
{"text", inh_family, inh_series,
|
||
inh_shape, Color_foreground},
|
||
{"textbf", inh_family, BOLD_SERIES,
|
||
inh_shape, Color_foreground},
|
||
{"textit", inh_family, inh_series,
|
||
ITALIC_SHAPE, Color_foreground},
|
||
{"textmd", inh_family, MEDIUM_SERIES,
|
||
inh_shape, Color_foreground},
|
||
{"textnormal", inh_family, inh_series,
|
||
UP_SHAPE, Color_foreground},
|
||
{"textrm", ROMAN_FAMILY,
|
||
inh_series, UP_SHAPE,Color_foreground},
|
||
{"textsc", inh_family, inh_series,
|
||
SMALLCAPS_SHAPE, Color_foreground},
|
||
{"textsf", SANS_FAMILY, inh_series,
|
||
inh_shape, Color_foreground},
|
||
{"textsl", inh_family, inh_series,
|
||
SLANTED_SHAPE, Color_foreground},
|
||
{"texttt", TYPEWRITER_FAMILY, inh_series,
|
||
inh_shape, Color_foreground},
|
||
{"textup", inh_family, inh_series,
|
||
UP_SHAPE, Color_foreground},
|
||
|
||
// TIPA support
|
||
{"textipa", inh_family, inh_series,
|
||
inh_shape, Color_foreground},
|
||
|
||
// mhchem support
|
||
{"ce", inh_family, inh_series,
|
||
inh_shape, Color_foreground},
|
||
{"cf", inh_family, inh_series,
|
||
inh_shape, Color_foreground},
|
||
|
||
// LyX internal usage
|
||
{"lyxtex", inh_family, inh_series,
|
||
UP_SHAPE, Color_latex},
|
||
// FIXME: The following two don't work on OS X, since the Symbol font
|
||
// uses a different encoding, and is therefore disabled in
|
||
// FontLoader::available().
|
||
{"lyxsymbol", SYMBOL_FAMILY, inh_series,
|
||
inh_shape, Color_math},
|
||
{"lyxboldsymbol", SYMBOL_FAMILY, BOLD_SERIES,
|
||
inh_shape, Color_math},
|
||
{"lyxblacktext", ROMAN_FAMILY, MEDIUM_SERIES,
|
||
UP_SHAPE, Color_foreground},
|
||
{"lyxnochange", inh_family, inh_series,
|
||
inh_shape, Color_foreground},
|
||
{"lyxfakebb", TYPEWRITER_FAMILY, BOLD_SERIES,
|
||
UP_SHAPE, Color_math},
|
||
{"lyxfakecal", SANS_FAMILY, MEDIUM_SERIES,
|
||
ITALIC_SHAPE, Color_math},
|
||
{"lyxfakefrak", ROMAN_FAMILY, BOLD_SERIES,
|
||
ITALIC_SHAPE, Color_math}
|
||
};
|
||
|
||
|
||
fontinfo * lookupFont(string const & name)
|
||
{
|
||
//lyxerr << "searching font '" << name << "'" << endl;
|
||
int const n = sizeof(fontinfos) / sizeof(fontinfo);
|
||
for (int i = 0; i < n; ++i)
|
||
if (fontinfos[i].cmd_ == name) {
|
||
//lyxerr << "found '" << i << "'" << endl;
|
||
return fontinfos + i;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
|
||
fontinfo * searchFont(string const & name)
|
||
{
|
||
fontinfo * f = lookupFont(name);
|
||
return f ? f : fontinfos;
|
||
// this should be mathnormal
|
||
//return searchFont("mathnormal");
|
||
}
|
||
|
||
|
||
bool isFontName(string const & name)
|
||
{
|
||
return lookupFont(name);
|
||
}
|
||
|
||
|
||
bool isMathFont(string const & name)
|
||
{
|
||
fontinfo * f = lookupFont(name);
|
||
return f && f->color_ == Color_math;
|
||
}
|
||
|
||
|
||
bool isTextFont(string const & name)
|
||
{
|
||
fontinfo * f = lookupFont(name);
|
||
return f && f->color_ == Color_foreground;
|
||
}
|
||
|
||
|
||
FontInfo getFont(string const & name)
|
||
{
|
||
FontInfo font;
|
||
augmentFont(font, name);
|
||
return font;
|
||
}
|
||
|
||
|
||
void fakeFont(string const & orig, string const & fake)
|
||
{
|
||
fontinfo * forig = searchFont(orig);
|
||
fontinfo * ffake = searchFont(fake);
|
||
if (forig && ffake) {
|
||
forig->family_ = ffake->family_;
|
||
forig->series_ = ffake->series_;
|
||
forig->shape_ = ffake->shape_;
|
||
forig->color_ = ffake->color_;
|
||
} else {
|
||
lyxerr << "Can't fake font '" << orig << "' with '"
|
||
<< fake << "'" << endl;
|
||
}
|
||
}
|
||
|
||
|
||
void augmentFont(FontInfo & font, string const & name)
|
||
{
|
||
static bool initialized = false;
|
||
if (!initialized) {
|
||
initialized = true;
|
||
// fake fonts if necessary
|
||
if (!theFontLoader().available(getFont("mathfrak")))
|
||
fakeFont("mathfrak", "lyxfakefrak");
|
||
if (!theFontLoader().available(getFont("mathcal")))
|
||
fakeFont("mathcal", "lyxfakecal");
|
||
}
|
||
fontinfo * info = searchFont(name);
|
||
if (info->family_ != inh_family)
|
||
font.setFamily(info->family_);
|
||
if (info->series_ != inh_series)
|
||
font.setSeries(info->series_);
|
||
if (info->shape_ != inh_shape)
|
||
font.setShape(info->shape_);
|
||
if (info->color_ != Color_none)
|
||
font.setColor(info->color_);
|
||
}
|
||
|
||
|
||
bool isAlphaSymbol(MathAtom const & at)
|
||
{
|
||
if (at->asCharInset() ||
|
||
(at->asSymbolInset() &&
|
||
at->asSymbolInset()->isOrdAlpha()))
|
||
return true;
|
||
|
||
if (at->asFontInset()) {
|
||
MathData const & ar = at->asFontInset()->cell(0);
|
||
for (size_t i = 0; i < ar.size(); ++i) {
|
||
if (!(ar[i]->asCharInset() ||
|
||
(ar[i]->asSymbolInset() &&
|
||
ar[i]->asSymbolInset()->isOrdAlpha())))
|
||
return false;
|
||
}
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
|
||
|
||
docstring asString(MathData const & ar)
|
||
{
|
||
odocstringstream os;
|
||
otexrowstream ots(os);
|
||
WriteStream ws(ots);
|
||
ws << ar;
|
||
return os.str();
|
||
}
|
||
|
||
|
||
void asArray(docstring const & str, MathData & ar, Parse::flags pf)
|
||
{
|
||
bool quiet = pf & Parse::QUIET;
|
||
if ((str.size() == 1 && quiet) || (!mathed_parse_cell(ar, str, pf) && quiet))
|
||
mathed_parse_cell(ar, str, pf | Parse::VERBATIM);
|
||
}
|
||
|
||
|
||
docstring asString(InsetMath const & inset)
|
||
{
|
||
odocstringstream os;
|
||
otexrowstream ots(os);
|
||
WriteStream ws(ots);
|
||
inset.write(ws);
|
||
return os.str();
|
||
}
|
||
|
||
|
||
docstring asString(MathAtom const & at)
|
||
{
|
||
odocstringstream os;
|
||
otexrowstream ots(os);
|
||
WriteStream ws(ots);
|
||
at->write(ws);
|
||
return os.str();
|
||
}
|
||
|
||
|
||
} // namespace lyx
|