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 void mathedSymbolDim(MetricsBase & mb, Dimension & dim, latexkeys const * sym)
685 LASSERT((bool)sym, return);
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);
700 void mathedSymbolDraw(PainterInfo & pi, int x, int y, latexkeys const * sym)
702 LASSERT((bool)sym, return);
703 //lyxerr << "drawing: symbol: '" << sym->name
704 // << "' in font: '" << sym->inset
705 // << "' drawn as: '" << sym->draw
708 bool const italic_upcase_greek = sym->inset == "cmr" &&
709 sym->extra == "mathalpha" &&
710 pi.base.fontname == "mathit";
711 std::string const font = italic_upcase_greek ? "cmm" : sym->inset;
713 Changer dummy = pi.base.changeFontSet(font);
714 pi.draw(x, y, mathedSymbol(pi.base, sym));
718 void metricsStrRedBlack(MetricsInfo & mi, Dimension & dim, docstring const & str)
720 FontInfo font = mi.base.font;
721 augmentFont(font, "mathnormal");
722 mathed_string_dim(font, str, dim);
726 void drawStrRed(PainterInfo & pi, int x, int y, docstring const & str)
728 FontInfo f = pi.base.font;
729 augmentFont(f, "mathnormal");
730 f.setColor(Color_latex);
731 pi.pain.text(x, y, str, f);
735 void drawStrBlack(PainterInfo & pi, int x, int y, docstring const & str)
737 FontInfo f = pi.base.font;
738 augmentFont(f, "mathnormal");
739 f.setColor(Color_foreground);
740 pi.pain.text(x, y, str, f);
744 void math_font_max_dim(FontInfo const & font, int & asc, int & des)
746 frontend::FontMetrics const & fm = theFontMetrics(font);
747 asc = fm.maxAscent();
748 des = fm.maxDescent();
761 FontFamily const inh_family = INHERIT_FAMILY;
762 FontSeries const inh_series = INHERIT_SERIES;
763 FontShape const inh_shape = INHERIT_SHAPE;
766 // mathnormal should be the first, otherwise the fallback further down
768 fontinfo fontinfos[] = {
770 // Color_math determines which fonts are math (see isMathFont)
771 {"mathnormal", ROMAN_FAMILY, MEDIUM_SERIES,
772 ITALIC_SHAPE, Color_math},
773 {"mathbf", inh_family, BOLD_SERIES,
774 inh_shape, Color_math},
775 {"mathcal", CMSY_FAMILY, inh_series,
776 inh_shape, Color_math},
777 {"mathfrak", EUFRAK_FAMILY, inh_series,
778 inh_shape, Color_math},
779 {"mathrm", ROMAN_FAMILY, inh_series,
780 UP_SHAPE, Color_math},
781 {"mathsf", SANS_FAMILY, inh_series,
782 inh_shape, Color_math},
783 {"mathbb", MSB_FAMILY, inh_series,
784 inh_shape, Color_math},
785 {"mathds", DS_FAMILY, inh_series,
786 inh_shape, Color_math},
787 {"mathtt", TYPEWRITER_FAMILY, inh_series,
788 inh_shape, Color_math},
789 {"mathit", inh_family, inh_series,
790 ITALIC_SHAPE, Color_math},
791 {"mathscr", RSFS_FAMILY, inh_series,
792 inh_shape, Color_math},
793 {"cmex", CMEX_FAMILY, inh_series,
794 inh_shape, Color_math},
795 {"cmm", CMM_FAMILY, inh_series,
796 inh_shape, Color_math},
797 {"cmr", CMR_FAMILY, inh_series,
798 inh_shape, Color_math},
799 {"cmsy", CMSY_FAMILY, inh_series,
800 inh_shape, Color_math},
801 {"eufrak", EUFRAK_FAMILY, inh_series,
802 inh_shape, Color_math},
803 {"msa", MSA_FAMILY, inh_series,
804 inh_shape, Color_math},
805 {"msb", MSB_FAMILY, inh_series,
806 inh_shape, Color_math},
807 {"stmry", STMARY_FAMILY, inh_series,
808 inh_shape, Color_math},
809 {"wasy", WASY_FAMILY, inh_series,
810 inh_shape, Color_math},
811 {"esint", ESINT_FAMILY, inh_series,
812 inh_shape, Color_math},
815 {"text", inh_family, inh_series,
816 inh_shape, Color_foreground},
817 {"textbf", inh_family, BOLD_SERIES,
818 inh_shape, Color_foreground},
819 {"textit", inh_family, inh_series,
820 ITALIC_SHAPE, Color_foreground},
821 {"textmd", inh_family, MEDIUM_SERIES,
822 inh_shape, Color_foreground},
823 {"textnormal", inh_family, inh_series,
824 UP_SHAPE, Color_foreground},
825 {"textrm", ROMAN_FAMILY,
826 inh_series, UP_SHAPE,Color_foreground},
827 {"textsc", inh_family, inh_series,
828 SMALLCAPS_SHAPE, Color_foreground},
829 {"textsf", SANS_FAMILY, inh_series,
830 inh_shape, Color_foreground},
831 {"textsl", inh_family, inh_series,
832 SLANTED_SHAPE, Color_foreground},
833 {"texttt", TYPEWRITER_FAMILY, inh_series,
834 inh_shape, Color_foreground},
835 {"textup", inh_family, inh_series,
836 UP_SHAPE, Color_foreground},
839 {"textipa", inh_family, inh_series,
840 inh_shape, Color_foreground},
843 {"ce", inh_family, inh_series,
844 inh_shape, Color_foreground},
845 {"cf", inh_family, inh_series,
846 inh_shape, Color_foreground},
848 // LyX internal usage
849 {"lyxtex", inh_family, inh_series,
850 UP_SHAPE, Color_latex},
851 // FIXME: The following two don't work on OS X, since the Symbol font
852 // uses a different encoding, and is therefore disabled in
853 // FontLoader::available().
854 {"lyxsymbol", SYMBOL_FAMILY, inh_series,
855 inh_shape, Color_math},
856 {"lyxboldsymbol", SYMBOL_FAMILY, BOLD_SERIES,
857 inh_shape, Color_math},
858 {"lyxblacktext", ROMAN_FAMILY, MEDIUM_SERIES,
859 UP_SHAPE, Color_foreground},
860 {"lyxnochange", inh_family, inh_series,
861 inh_shape, Color_foreground},
862 {"lyxfakebb", TYPEWRITER_FAMILY, BOLD_SERIES,
863 UP_SHAPE, Color_math},
864 {"lyxfakecal", SANS_FAMILY, MEDIUM_SERIES,
865 ITALIC_SHAPE, Color_math},
866 {"lyxfakefrak", ROMAN_FAMILY, BOLD_SERIES,
867 ITALIC_SHAPE, Color_math}
871 fontinfo * lookupFont(string const & name)
873 //lyxerr << "searching font '" << name << "'" << endl;
874 int const n = sizeof(fontinfos) / sizeof(fontinfo);
875 for (int i = 0; i < n; ++i)
876 if (fontinfos[i].cmd_ == name) {
877 //lyxerr << "found '" << i << "'" << endl;
878 return fontinfos + i;
884 fontinfo * searchFont(string const & name)
886 fontinfo * f = lookupFont(name);
887 return f ? f : fontinfos;
888 // this should be mathnormal
889 //return searchFont("mathnormal");
893 bool isFontName(string const & name)
895 return lookupFont(name);
899 bool isMathFont(string const & name)
901 fontinfo * f = lookupFont(name);
902 return f && f->color_ == Color_math;
906 bool isTextFont(string const & name)
908 fontinfo * f = lookupFont(name);
909 return f && f->color_ == Color_foreground;
913 FontInfo getFont(string const & name)
916 augmentFont(font, name);
921 void fakeFont(string const & orig, string const & fake)
923 fontinfo * forig = searchFont(orig);
924 fontinfo * ffake = searchFont(fake);
925 if (forig && ffake) {
926 forig->family_ = ffake->family_;
927 forig->series_ = ffake->series_;
928 forig->shape_ = ffake->shape_;
929 forig->color_ = ffake->color_;
931 lyxerr << "Can't fake font '" << orig << "' with '"
932 << fake << "'" << endl;
937 void augmentFont(FontInfo & font, string const & name)
939 static bool initialized = false;
942 // fake fonts if necessary
943 if (!theFontLoader().available(getFont("mathfrak")))
944 fakeFont("mathfrak", "lyxfakefrak");
945 if (!theFontLoader().available(getFont("mathcal")))
946 fakeFont("mathcal", "lyxfakecal");
948 fontinfo * info = searchFont(name);
949 if (info->family_ != inh_family)
950 font.setFamily(info->family_);
951 if (info->series_ != inh_series)
952 font.setSeries(info->series_);
953 if (info->shape_ != inh_shape)
954 font.setShape(info->shape_);
955 if (info->color_ != Color_none)
956 font.setColor(info->color_);
960 bool isAlphaSymbol(MathAtom const & at)
962 if (at->asCharInset() ||
963 (at->asSymbolInset() &&
964 at->asSymbolInset()->isOrdAlpha()))
967 if (at->asFontInset()) {
968 MathData const & ar = at->asFontInset()->cell(0);
969 for (size_t i = 0; i < ar.size(); ++i) {
970 if (!(ar[i]->asCharInset() ||
971 (ar[i]->asSymbolInset() &&
972 ar[i]->asSymbolInset()->isOrdAlpha())))
981 docstring asString(MathData const & ar)
984 otexrowstream ots(os);
991 void asArray(docstring const & str, MathData & ar, Parse::flags pf)
993 // If the QUIET flag is set, we are going to parse for either
994 // a paste operation or a macro definition. We try to do the
995 // right thing in all cases.
997 bool quiet = pf & Parse::QUIET;
998 bool macro = pf & Parse::MACRODEF;
999 if ((str.size() == 1 && quiet) || (!mathed_parse_cell(ar, str, pf) && quiet && !macro))
1000 mathed_parse_cell(ar, str, pf | Parse::VERBATIM);
1004 docstring asString(InsetMath const & inset)
1006 odocstringstream os;
1007 otexrowstream ots(os);
1008 WriteStream ws(ots);
1014 docstring asString(MathAtom const & at)
1016 odocstringstream os;
1017 otexrowstream ots(os);
1018 WriteStream ws(ots);
1024 int axis_height(MetricsBase & mb)
1026 Changer dummy = mb.changeFontSet("mathnormal");
1027 return theFontMetrics(mb.font).ascent('-') - 1;
1031 void validate_math_word(LaTeXFeatures & features, docstring const & word)
1033 MathWordList const & words = mathedWordList();
1034 MathWordList::const_iterator it = words.find(word);
1035 if (it != words.end()) {
1036 string const req = it->second.required;
1038 features.require(req);