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16af6e7c50
This is a follow-up to 758de957.
- unify the metrics and drawing of \sqrt and \root using helper
functions mathed_root_metrics and mathed_draw_root.
- compute the vertical spacing above the nucleus of the root following
rule 11 of the TeXbook. In particular, it is different in inline and
display style.
- draw the root glyph without hard-coded pixel values. Make the line
width depend on the zoom.
more work is needed to implement properly rule 11:
- Ideally, we should use sqrt glyphs from the math fonts. Note that
then we would get rule thickness from there.
- The positioning of the root MathData is arbitrary. It should
follow the definition of \root...\of... in The Texbook in
Apprendix B page 360.
Fixes bug #10814.
95 lines
2.4 KiB
C++
95 lines
2.4 KiB
C++
// -*- C++ -*-
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/**
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* \file MathSupport.h
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Alejandro Aguilar Sierra
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* \author André Pönitz
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*
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* Full author contact details are available in file CREDITS.
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*/
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#ifndef MATH_SUPPORT_H
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#define MATH_SUPPORT_H
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#include "MathParser_flags.h"
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#include "support/strfwd.h"
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namespace lyx {
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class MetricsBase;
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class MetricsInfo;
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class PainterInfo;
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class FontInfo;
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class Dimension;
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class MathData;
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class MathAtom;
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class InsetMath;
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class latexkeys;
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class LaTeXFeatures;
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int mathed_font_em(FontInfo const &);
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int mathed_font_x_height(FontInfo const & font);
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int mathed_mu(FontInfo const & font, double mu);
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int mathed_thinmuskip(FontInfo const & font);
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int mathed_medmuskip(FontInfo const & font);
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int mathed_thickmuskip(FontInfo const & font);
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int mathed_char_width(FontInfo const &, char_type c);
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int mathed_char_kerning(FontInfo const &, char_type c);
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void mathed_draw_deco(PainterInfo & pi, int x, int y, int w, int h,
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docstring const & name);
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void mathed_string_dim(FontInfo const & font,
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docstring const & s,
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Dimension & dim);
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int mathed_string_width(FontInfo const &, docstring const & s);
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void mathedSymbolDim(MetricsBase & mb, Dimension & dim, latexkeys const * sym);
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void mathedSymbolDraw(PainterInfo & pi, int x, int y, latexkeys const * sym);
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void metricsStrRedBlack(MetricsInfo & mi, Dimension & dim, docstring const & s);
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void drawStrRed(PainterInfo & pi, int x, int y, docstring const & s);
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void drawStrBlack(PainterInfo & pi, int x, int y, docstring const & s);
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void math_font_max_dim(FontInfo const &, int & asc, int & desc);
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void augmentFont(FontInfo & f, std::string const & cmd);
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bool isFontName(std::string const & name);
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bool isMathFont(std::string const & name);
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bool isTextFont(std::string const & name);
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bool isAlphaSymbol(MathAtom const & at);
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// converts single cell to string
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docstring asString(MathData const & ar);
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// converts single inset to string
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docstring asString(InsetMath const &);
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docstring asString(MathAtom const &);
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// converts string to single cell
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void asArray(docstring const &, MathData &, Parse::flags f = Parse::NORMAL);
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// simulate axis height (font dimension sigma 22)
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int axis_height(MetricsBase & mb);
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void validate_math_word(LaTeXFeatures & features, docstring const & word);
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} // namespace lyx
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#endif
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