2 * \file MathSupport.cpp
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 "MathSupport.h"
16 #include "InsetMathFont.h"
17 #include "InsetMathSymbol.h"
20 #include "MathFactory.h"
21 #include "MathParser.h"
22 #include "MathStream.h"
24 #include "LaTeXFeatures.h"
25 #include "MetricsInfo.h"
27 #include "frontends/FontLoader.h"
28 #include "frontends/FontMetrics.h"
29 #include "frontends/Painter.h"
31 #include "support/debug.h"
32 #include "support/docstream.h"
33 #include "support/lassert.h"
34 #include "support/lyxlib.h"
43 using frontend::Painter;
50 Matrix(int, double, double);
52 void transform(double &, double &);
59 Matrix::Matrix(int code, double x, double y)
61 double const cs = (code & 1) ? 0 : (1 - code);
62 double const sn = (code & 1) ? (2 - code) : 0;
70 void Matrix::transform(double & x, double & y)
72 double xx = m_[0][0] * x + m_[0][1] * y;
73 double yy = m_[1][0] * x + m_[1][1] * y;
83 * Internal struct of a drawing: code n x1 y1 ... xn yn, where code is:
84 * 0 = end, 1 = line, 2 = polyline, 3 = square line, 4 = square polyline
85 * 5 = rounded thick line (i.e. dot for short line)
89 double const parenthHigh[] = {
91 0.9840, 0.0014, 0.7143, 0.0323, 0.4603, 0.0772,
92 0.2540, 0.1278, 0.1746, 0.1966, 0.0952, 0.3300,
93 0.0950, 0.5000, 0.0952, 0.6700, 0.1746, 0.8034,
94 0.2540, 0.8722, 0.4603, 0.9228, 0.7143, 0.9677,
100 double const parenth[] = {
102 0.9930, 0.0071, 0.7324, 0.0578, 0.5141, 0.1126,
103 0.3380, 0.1714, 0.2183, 0.2333, 0.0634, 0.3621,
104 0.0141, 0.5000, 0.0563, 0.6369, 0.2113, 0.7647,
105 0.3310, 0.8276, 0.5070, 0.8864, 0.7254, 0.9412,
111 double const brace[] = {
113 0.9492, 0.0020, 0.9379, 0.0020, 0.7458, 0.0243,
114 0.5819, 0.0527, 0.4859, 0.0892, 0.4463, 0.1278,
115 0.4463, 0.3732, 0.4011, 0.4199, 0.2712, 0.4615,
116 0.0734, 0.4919, 0.0113, 0.5000, 0.0734, 0.5081,
117 0.2712, 0.5385, 0.4011, 0.5801, 0.4463, 0.6268,
118 0.4463, 0.8722, 0.4859, 0.9108, 0.5819, 0.9473,
119 0.7458, 0.9757, 0.9379, 0.9980, 0.9492, 0.9980,
124 double const mapsto[] = {
126 0.75, 0.015, 0.95, 0.5, 0.75, 0.985,
127 1, 0.015, 0.475, 0.945, 0.475,
128 1, 0.015, 0.015, 0.015, 0.985,
133 double const lhook[] = {
135 0.25, 0.015, 0.05, 0.5, 0.25, 0.985,
136 1, 0.015, 0.475, 0.7, 0.475,
138 0.7, 0.015, 0.825, 0.15, 0.985, 0.25,
139 0.825, 0.35, 0.7, 0.475,
144 double const rhook[] = {
146 0.75, 0.015, 0.95, 0.5, 0.75, 0.985,
147 1, 0.3, 0.475, 0.985, 0.475,
149 0.3, 0.015, 0.175, 0.15, 0.05, 0.25,
150 0.175, 0.35, 0.3, 0.475,
155 double const LRArrow[] = {
157 0.25, 0.015, 0.05, 0.5, 0.25, 0.985,
159 0.75, 0.015, 0.95, 0.5, 0.75, 0.985,
160 1, 0.2, 0.8, 0.8, 0.8,
161 1, 0.2, 0.2, 0.8, 0.2,
166 double const LArrow[] = {
168 0.25, 0.015, 0.05, 0.5, 0.25, 0.985,
169 1, 0.2, 0.8, 0.985, 0.8,
170 1, 0.2, 0.2, 0.985, 0.2,
175 double const lharpoondown[] = {
177 0.015, 0.5, 0.25, 0.985,
178 1, 0.02, 0.475, 0.985, 0.475,
183 double const lharpoonup[] = {
185 0.25, 0.015, 0.015, 0.5,
186 1, 0.02, 0.525, 0.985, 0.525,
191 double const lrharpoons[] = {
193 0.25, 0.015, 0.015, 0.225,
194 1, 0.02, 0.23, 0.985, 0.23,
196 0.75, 0.985, 0.985, 0.775,
197 1, 0.02, 0.7, 0.980, 0.7,
202 double const rlharpoons[] = {
204 0.75, 0.015, 0.985, 0.225,
205 1, 0.02, 0.23, 0.985, 0.23,
207 0.25, 0.985, 0.015, 0.775,
208 1, 0.02, 0.7, 0.980, 0.7,
213 double const arrow[] = {
215 0.0150, 0.7500, 0.2000, 0.6000, 0.3500, 0.3500,
216 0.5000, 0.0500, 0.6500, 0.3500, 0.8000, 0.6000,
218 3, 0.5000, 0.1500, 0.5000, 0.9500,
223 double const Arrow[] = {
225 0.0150, 0.7500, 0.2000, 0.6000, 0.3500, 0.3500,
226 0.5000, 0.0500, 0.6500, 0.3500, 0.8000, 0.6000,
228 3, 0.3500, 0.5000, 0.3500, 0.9500,
229 3, 0.6500, 0.5000, 0.6500, 0.9500,
234 double const udarrow[] = {
236 0.015, 0.25, 0.5, 0.05, 0.95, 0.25,
238 0.015, 0.75, 0.5, 0.95, 0.95, 0.75,
239 1, 0.5, 0.1, 0.5, 0.9,
244 double const Udarrow[] = {
246 0.015, 0.25, 0.5, 0.05, 0.95, 0.25,
248 0.015, 0.75, 0.5, 0.95, 0.95, 0.75,
249 1, 0.35, 0.2, 0.35, 0.8,
250 1, 0.65, 0.2, 0.65, 0.8,
255 double const brack[] = {
257 0.95, 0.05, 0.05, 0.05, 0.05, 0.95, 0.95, 0.95,
262 double const dbrack[] = {
264 0.95, 0.05, 0.05, 0.05, 0.05, 0.95, 0.95, 0.95,
266 0.50, 0.05, 0.50, 0.95,
271 double const corner[] = {
273 0.95, 0.05, 0.05, 0.05, 0.05, 0.95,
278 double const angle[] = {
280 1, 0, 0.05, 0.5, 1, 1,
285 double const slash[] = {
286 1, 0.95, 0.05, 0.05, 0.95,
291 double const hline[] = {
292 1, 0.00, 0.5, 1.0, 0.5,
297 double const dot[] = {
298 // 1, 0.5, 0.2, 0.5, 0.2,
299 // 1, 0.4, 0.4, 0.6, 0.4,
300 // 1, 0.5, 0.5, 0.5, 0.5,
301 5, 0.4, 0.4, 0.6, 0.4,
306 double const ddot[] = {
307 5, 0.0, 0.4, 0.3, 0.4,
308 5, 0.6, 0.4, 1.0, 0.4,
313 double const dddot[] = {
314 1, 0.1, 0.5, 0.2, 0.5,
315 1, 0.45, 0.5, 0.55, 0.5,
316 1, 0.8, 0.5, 0.9, 0.5,
321 double const ddddot[] = {
322 1, 0.1, 0.5, 0.2, 0.5,
323 1, 0.45, 0.5, 0.55, 0.5,
324 1, 0.8, 0.5, 0.9, 0.5,
325 1, 1.15, 0.5, 1.25, 0.5,
330 double const hline3[] = {
332 1, 0.475, 0, 0.525, 0,
338 double const dline3[] = {
339 1, 0.1, 0.1, 0.15, 0.15,
340 1, 0.475, 0.475, 0.525, 0.525,
341 1, 0.85, 0.85, 0.9, 0.9,
346 double const ring[] = {
348 0.5, 0.8, 0.8, 0.5, 0.5, 0.2, 0.2, 0.5, 0.5, 0.8,
353 double const vert[] = {
354 1, 0.5, 0.05, 0.5, 0.95,
359 double const Vert[] = {
360 1, 0.3, 0.05, 0.3, 0.95,
361 1, 0.7, 0.05, 0.7, 0.95,
366 double const tilde[] = {
368 0.00, 0.8, 0.25, 0.2, 0.75, 0.8, 1.00, 0.2,
378 struct named_deco_struct {
384 named_deco_struct deco_table[] = {
386 {"widehat", angle, 3 },
387 {"widetilde", tilde, 0 },
388 {"underbar", hline, 0 },
389 {"underline", hline, 0 },
390 {"overline", hline, 0 },
391 {"underbrace", brace, 1 },
392 {"overbrace", brace, 3 },
393 {"overleftarrow", arrow, 1 },
394 {"overrightarrow", arrow, 3 },
395 {"overleftrightarrow", udarrow, 1 },
396 {"xhookleftarrow", lhook, 0 },
397 {"xhookrightarrow", rhook, 0 },
398 {"xleftarrow", arrow, 1 },
399 {"xLeftarrow", LArrow, 0 },
400 {"xleftharpoondown", lharpoondown, 0 },
401 {"xleftharpoonup", lharpoonup, 0 },
402 {"xleftrightharpoons", lrharpoons, 0 },
403 {"xleftrightarrow", udarrow, 1 },
404 {"xLeftrightarrow", LRArrow, 0 },
405 {"xmapsto", mapsto, 0 },
406 {"xrightarrow", arrow, 3 },
407 {"xRightarrow", LArrow, 2 },
408 {"xrightharpoondown", lharpoonup, 2 },
409 {"xrightharpoonup", lharpoondown, 2 },
410 {"xrightleftharpoons", rlharpoons, 0 },
411 {"underleftarrow", arrow, 1 },
412 {"underrightarrow", arrow, 3 },
413 {"underleftrightarrow", udarrow, 1 },
414 {"undertilde", tilde, 0 },
415 {"utilde", tilde, 0 },
422 {"lbrace", brace, 0 },
423 {"rbrace", brace, 2 },
426 {"llbracket", dbrack, 0 },
427 {"rrbracket", dbrack, 2 },
430 {"slash", slash, 0 },
441 {"backslash", slash, 1 },
442 {"langle", angle, 0 },
443 {"lceil", corner, 0 },
444 {"lfloor", corner, 1 },
445 {"rangle", angle, 2 },
446 {"rceil", corner, 3 },
447 {"rfloor", corner, 2 },
448 {"downarrow", arrow, 2 },
449 {"Downarrow", Arrow, 2 },
450 {"uparrow", arrow, 0 },
451 {"Uparrow", Arrow, 0 },
452 {"updownarrow", udarrow, 0 },
453 {"Updownarrow", Udarrow, 0 },
457 {"dddot", dddot, 0 },
458 {"ddddot", ddddot, 0 },
460 {"grave", slash, 1 },
461 {"acute", slash, 0 },
462 {"tilde", tilde, 0 },
465 {"check", angle, 1 },
466 {"breve", parenth, 1 },
468 {"mathring", ring, 0 },
471 {"dots", hline3, 0 },
472 {"ldots", hline3, 0 },
473 {"cdots", hline3, 0 },
474 {"vdots", hline3, 1 },
475 {"ddots", dline3, 0 },
476 {"adots", dline3, 1 },
477 {"iddots", dline3, 1 },
478 {"dotsb", hline3, 0 },
479 {"dotsc", hline3, 0 },
480 {"dotsi", hline3, 0 },
481 {"dotsm", hline3, 0 },
482 {"dotso", hline3, 0 }
486 map<docstring, deco_struct> deco_list;
488 // sort the table on startup
489 class init_deco_table {
492 unsigned const n = sizeof(deco_table) / sizeof(deco_table[0]);
493 for (named_deco_struct * p = deco_table; p != deco_table + n; ++p) {
497 deco_list[from_ascii(p->name)] = d;
502 static init_deco_table dummy_deco_table;
505 deco_struct const * search_deco(docstring const & name)
507 map<docstring, deco_struct>::const_iterator p = deco_list.find(name);
508 return p == deco_list.end() ? 0 : &(p->second);
515 int mathed_font_em(FontInfo const & font)
517 return theFontMetrics(font).em();
521 int mathed_font_x_height(FontInfo const & font)
523 return theFontMetrics(font).xHeight();
526 /* The math units. Quoting TeX by Topic, p.205:
528 * Spacing around mathematical objects is measured in mu units. A mu
529 * is 1/18th part of \fontdimen6 of the font in family 2 in the
530 * current style, the ‘quad’ value of the symbol font.
532 * A \thickmuskip (default value in plain TeX: 5mu plus 5mu) is
533 * inserted around (binary) relations, except where these are preceded
534 * or followed by other relations or punctuation, and except if they
535 * follow an open, or precede a close symbol.
537 * A \medmuskip (default value in plain TeX: 4mu plus 2mu minus 4mu)
538 * is put around binary operators.
540 * A \thinmuskip (default value in plain TeX: 3mu) follows after
541 * punctuation, and is put around inner objects, except where these
542 * are followed by a close or preceded by an open symbol, and except
543 * if the other object is a large operator or a binary relation.
545 * See the file MathClass.cpp for a formal implementation of the rules
549 int mathed_mu(FontInfo const & font, double mu)
551 MetricsBase mb(nullptr, font);
552 return mb.inPixels(Length(mu, Length::MU));
555 int mathed_thinmuskip(FontInfo const & font) { return mathed_mu(font, 3.0); }
556 int mathed_medmuskip(FontInfo const & font) { return mathed_mu(font, 4.0); }
557 int mathed_thickmuskip(FontInfo const & font) { return mathed_mu(font, 5.0); }
560 int mathed_char_width(FontInfo const & font, char_type c)
562 return theFontMetrics(font).width(c);
566 int mathed_char_kerning(FontInfo const & font, char_type c)
568 frontend::FontMetrics const & fm = theFontMetrics(font);
569 return max(0, fm.rbearing(c) - fm.width(c));
573 void mathed_string_dim(FontInfo const & font,
577 frontend::FontMetrics const & fm = theFontMetrics(font);
580 for (docstring::const_iterator it = s.begin();
583 dim.asc = max(dim.asc, fm.ascent(*it));
584 dim.des = max(dim.des, fm.descent(*it));
586 dim.wid = fm.width(s);
590 int mathed_string_width(FontInfo const & font, docstring const & s)
592 return theFontMetrics(font).width(s);
596 void mathed_draw_deco(PainterInfo & pi, int x, int y, int w, int h,
597 docstring const & name)
600 pi.pain.line(x + w/2, y, x + w/2, y + h,
601 Color_cursor, Painter::line_onoffdash);
605 deco_struct const * mds = search_deco(name);
607 lyxerr << "Deco was not found. Programming error?" << endl;
608 lyxerr << "name: '" << to_utf8(name) << "'" << endl;
612 int const n = (w < h) ? w : h;
613 int const r = mds->angle;
614 double const * d = mds->data;
616 if (h > 70 && (name == "(" || name == ")"))
620 Matrix sqmt(r, n, n);
628 for (int i = 0; d[i]; ) {
629 int code = int(d[i++]);
630 if (code & 1) { // code == 1 || code == 3 || code == 5
636 sqmt.transform(xx, yy);
638 mt.transform(xx, yy);
639 mt.transform(x2, y2);
641 int(x + xx + 0.5), int(y + yy + 0.5),
642 int(x + x2 + 0.5), int(y + y2 + 0.5),
643 pi.base.font.color());
644 if (code == 5) { // thicker, but rounded
646 int(x + xx + 0.5+1), int(y + yy + 0.5-1),
647 int(x + x2 + 0.5-1), int(y + y2 + 0.5-1),
648 pi.base.font.color());
650 int(x + xx + 0.5+1), int(y + yy + 0.5+1),
651 int(x + x2 + 0.5-1), int(y + y2 + 0.5+1),
652 pi.base.font.color());
657 int const n2 = int(d[i++]);
658 for (int j = 0; j < n2; ++j) {
661 // lyxerr << ' ' << xx << ' ' << yy << ' ';
663 sqmt.transform(xx, yy);
665 mt.transform(xx, yy);
666 xp[j] = int(x + xx + 0.5);
667 yp[j] = int(y + yy + 0.5);
668 // lyxerr << "P[" << j ' ' << xx << ' ' << yy << ' ' << x << ' ' << y << ']';
670 pi.pain.lines(xp, yp, n2, pi.base.font.color());
676 docstring const & mathedSymbol(MetricsBase & mb, latexkeys const * sym)
678 return (mb.font.style() == DISPLAY_STYLE && !sym->dsp_draw.empty()) ?
679 sym->dsp_draw : sym->draw;
683 int mathedSymbolDim(MetricsBase & mb, Dimension & dim, latexkeys const * sym)
685 LASSERT((bool)sym, return 0);
686 //lyxerr << "metrics: symbol: '" << sym->name
687 // << "' in font: '" << sym->inset
688 // << "' drawn as: '" << sym->draw
691 bool const italic_upcase_greek = sym->inset == "cmr" &&
692 sym->extra == "mathalpha" &&
693 mb.fontname == "mathit";
694 std::string const font = italic_upcase_greek ? "cmm" : sym->inset;
695 Changer dummy = mb.changeFontSet(font);
696 mathed_string_dim(mb.font, mathedSymbol(mb, sym), dim);
697 return mathed_char_kerning(mb.font, mathedSymbol(mb, sym).back());
701 void mathedSymbolDraw(PainterInfo & pi, int x, int y, latexkeys const * sym)
703 LASSERT((bool)sym, return);
704 //lyxerr << "drawing: symbol: '" << sym->name
705 // << "' in font: '" << sym->inset
706 // << "' drawn as: '" << sym->draw
709 bool const italic_upcase_greek = sym->inset == "cmr" &&
710 sym->extra == "mathalpha" &&
711 pi.base.fontname == "mathit";
712 std::string const font = italic_upcase_greek ? "cmm" : sym->inset;
714 Changer dummy = pi.base.changeFontSet(font);
715 pi.draw(x, y, mathedSymbol(pi.base, sym));
719 void metricsStrRedBlack(MetricsInfo & mi, Dimension & dim, docstring const & str)
721 FontInfo font = mi.base.font;
722 augmentFont(font, "mathnormal");
723 mathed_string_dim(font, str, dim);
727 void drawStrRed(PainterInfo & pi, int x, int y, docstring const & str)
729 FontInfo f = pi.base.font;
730 augmentFont(f, "mathnormal");
731 f.setColor(Color_latex);
732 pi.pain.text(x, y, str, f);
736 void drawStrBlack(PainterInfo & pi, int x, int y, docstring const & str)
738 FontInfo f = pi.base.font;
739 augmentFont(f, "mathnormal");
740 f.setColor(Color_foreground);
741 pi.pain.text(x, y, str, f);
745 void math_font_max_dim(FontInfo const & font, int & asc, int & des)
747 frontend::FontMetrics const & fm = theFontMetrics(font);
748 asc = fm.maxAscent();
749 des = fm.maxDescent();
762 FontFamily const inh_family = INHERIT_FAMILY;
763 FontSeries const inh_series = INHERIT_SERIES;
764 FontShape const inh_shape = INHERIT_SHAPE;
767 // mathnormal should be the first, otherwise the fallback further down
769 fontinfo fontinfos[] = {
771 // Color_math determines which fonts are math (see isMathFont)
772 {"mathnormal", ROMAN_FAMILY, MEDIUM_SERIES,
773 ITALIC_SHAPE, Color_math},
774 {"mathbf", inh_family, BOLD_SERIES,
775 inh_shape, Color_math},
776 {"mathcal", CMSY_FAMILY, inh_series,
777 inh_shape, Color_math},
778 {"mathfrak", EUFRAK_FAMILY, inh_series,
779 inh_shape, Color_math},
780 {"mathrm", ROMAN_FAMILY, inh_series,
781 UP_SHAPE, Color_math},
782 {"mathsf", SANS_FAMILY, inh_series,
783 inh_shape, Color_math},
784 {"mathbb", MSB_FAMILY, inh_series,
785 inh_shape, Color_math},
786 {"mathds", DS_FAMILY, inh_series,
787 inh_shape, Color_math},
788 {"mathbbm", BBM_FAMILY, inh_series,
789 inh_shape, Color_math},
790 {"mathtt", TYPEWRITER_FAMILY, inh_series,
791 inh_shape, Color_math},
792 {"mathit", inh_family, inh_series,
793 ITALIC_SHAPE, Color_math},
794 {"mathscr", RSFS_FAMILY, inh_series,
795 inh_shape, Color_math},
796 {"cmex", CMEX_FAMILY, inh_series,
797 inh_shape, Color_math},
798 {"cmm", CMM_FAMILY, inh_series,
799 inh_shape, Color_math},
800 {"cmr", CMR_FAMILY, inh_series,
801 inh_shape, Color_math},
802 {"cmsy", CMSY_FAMILY, inh_series,
803 inh_shape, Color_math},
804 {"eufrak", EUFRAK_FAMILY, inh_series,
805 inh_shape, Color_math},
806 {"msa", MSA_FAMILY, inh_series,
807 inh_shape, Color_math},
808 {"msb", MSB_FAMILY, inh_series,
809 inh_shape, Color_math},
810 {"stmry", STMARY_FAMILY, inh_series,
811 inh_shape, Color_math},
812 {"wasy", WASY_FAMILY, inh_series,
813 inh_shape, Color_math},
814 {"esint", ESINT_FAMILY, inh_series,
815 inh_shape, Color_math},
818 {"text", inh_family, inh_series,
819 inh_shape, Color_foreground},
820 {"textbf", inh_family, BOLD_SERIES,
821 inh_shape, Color_foreground},
822 {"textit", inh_family, inh_series,
823 ITALIC_SHAPE, Color_foreground},
824 {"textmd", inh_family, MEDIUM_SERIES,
825 inh_shape, Color_foreground},
826 {"textnormal", inh_family, inh_series,
827 UP_SHAPE, Color_foreground},
828 {"textrm", ROMAN_FAMILY,
829 inh_series, UP_SHAPE,Color_foreground},
830 {"textsc", inh_family, inh_series,
831 SMALLCAPS_SHAPE, Color_foreground},
832 {"textsf", SANS_FAMILY, inh_series,
833 inh_shape, Color_foreground},
834 {"textsl", inh_family, inh_series,
835 SLANTED_SHAPE, Color_foreground},
836 {"texttt", TYPEWRITER_FAMILY, inh_series,
837 inh_shape, Color_foreground},
838 {"textup", inh_family, inh_series,
839 UP_SHAPE, Color_foreground},
842 {"textipa", inh_family, inh_series,
843 inh_shape, Color_foreground},
846 {"ce", inh_family, inh_series,
847 inh_shape, Color_foreground},
848 {"cf", inh_family, inh_series,
849 inh_shape, Color_foreground},
851 // LyX internal usage
852 {"lyxtex", inh_family, inh_series,
853 UP_SHAPE, Color_latex},
854 // FIXME: The following two don't work on OS X, since the Symbol font
855 // uses a different encoding, and is therefore disabled in
856 // FontLoader::available().
857 {"lyxsymbol", SYMBOL_FAMILY, inh_series,
858 inh_shape, Color_math},
859 {"lyxboldsymbol", SYMBOL_FAMILY, BOLD_SERIES,
860 inh_shape, Color_math},
861 {"lyxblacktext", ROMAN_FAMILY, MEDIUM_SERIES,
862 UP_SHAPE, Color_foreground},
863 {"lyxnochange", inh_family, inh_series,
864 inh_shape, Color_foreground},
865 {"lyxfakebb", TYPEWRITER_FAMILY, BOLD_SERIES,
866 UP_SHAPE, Color_math},
867 {"lyxfakecal", SANS_FAMILY, MEDIUM_SERIES,
868 ITALIC_SHAPE, Color_math},
869 {"lyxfakefrak", ROMAN_FAMILY, BOLD_SERIES,
870 ITALIC_SHAPE, Color_math}
874 fontinfo * lookupFont(string const & name)
876 //lyxerr << "searching font '" << name << "'" << endl;
877 int const n = sizeof(fontinfos) / sizeof(fontinfo);
878 for (int i = 0; i < n; ++i)
879 if (fontinfos[i].cmd_ == name) {
880 //lyxerr << "found '" << i << "'" << endl;
881 return fontinfos + i;
887 fontinfo * searchFont(string const & name)
889 fontinfo * f = lookupFont(name);
890 return f ? f : fontinfos;
891 // this should be mathnormal
892 //return searchFont("mathnormal");
896 bool isFontName(string const & name)
898 return lookupFont(name);
902 bool isMathFont(string const & name)
904 fontinfo * f = lookupFont(name);
905 return f && f->color_ == Color_math;
909 bool isTextFont(string const & name)
911 fontinfo * f = lookupFont(name);
912 return f && f->color_ == Color_foreground;
916 FontInfo getFont(string const & name)
919 augmentFont(font, name);
924 void fakeFont(string const & orig, string const & fake)
926 fontinfo * forig = searchFont(orig);
927 fontinfo * ffake = searchFont(fake);
928 if (forig && ffake) {
929 forig->family_ = ffake->family_;
930 forig->series_ = ffake->series_;
931 forig->shape_ = ffake->shape_;
932 forig->color_ = ffake->color_;
934 lyxerr << "Can't fake font '" << orig << "' with '"
935 << fake << "'" << endl;
940 void augmentFont(FontInfo & font, string const & name)
942 static bool initialized = false;
945 // fake fonts if necessary
946 if (!theFontLoader().available(getFont("mathfrak")))
947 fakeFont("mathfrak", "lyxfakefrak");
948 if (!theFontLoader().available(getFont("mathcal")))
949 fakeFont("mathcal", "lyxfakecal");
951 fontinfo * info = searchFont(name);
952 if (info->family_ != inh_family)
953 font.setFamily(info->family_);
954 if (info->series_ != inh_series)
955 font.setSeries(info->series_);
956 if (info->shape_ != inh_shape)
957 font.setShape(info->shape_);
958 if (info->color_ != Color_none)
959 font.setColor(info->color_);
963 bool isAlphaSymbol(MathAtom const & at)
965 if (at->asCharInset() ||
966 (at->asSymbolInset() &&
967 at->asSymbolInset()->isOrdAlpha()))
970 if (at->asFontInset()) {
971 MathData const & ar = at->asFontInset()->cell(0);
972 for (size_t i = 0; i < ar.size(); ++i) {
973 if (!(ar[i]->asCharInset() ||
974 (ar[i]->asSymbolInset() &&
975 ar[i]->asSymbolInset()->isOrdAlpha())))
984 docstring asString(MathData const & ar)
987 otexrowstream ots(os);
994 void asArray(docstring const & str, MathData & ar, Parse::flags pf)
996 // If the QUIET flag is set, we are going to parse for either
997 // a paste operation or a macro definition. We try to do the
998 // right thing in all cases.
1000 bool quiet = pf & Parse::QUIET;
1001 bool macro = pf & Parse::MACRODEF;
1002 if ((str.size() == 1 && quiet) || (!mathed_parse_cell(ar, str, pf) && quiet && !macro))
1003 mathed_parse_cell(ar, str, pf | Parse::VERBATIM);
1007 docstring asString(InsetMath const & inset)
1009 odocstringstream os;
1010 otexrowstream ots(os);
1011 WriteStream ws(ots);
1017 docstring asString(MathAtom const & at)
1019 odocstringstream os;
1020 otexrowstream ots(os);
1021 WriteStream ws(ots);
1027 int axis_height(MetricsBase & mb)
1029 Changer dummy = mb.changeFontSet("mathnormal");
1030 return theFontMetrics(mb.font).ascent('-') - 1;
1034 void validate_math_word(LaTeXFeatures & features, docstring const & word)
1036 MathWordList const & words = mathedWordList();
1037 MathWordList::const_iterator it = words.find(word);
1038 if (it != words.end()) {
1039 string const req = it->second.required;
1041 features.require(req);