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03a4b8c932
* Convert the kerning into a proper right margin for mathnormal, mathscr and mathcal (fonts with \fontdimen2 == 0 as per rule 17 from TeXBook). * Simulate the fact that characters in mathnormal fonts have a 0-width left bearing. * Implement subscript positioning in the case of rule 17 using negative italic correction (kerning_).
162 lines
2.9 KiB
C++
162 lines
2.9 KiB
C++
/**
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* \file InsetMathSpecialChar.cpp
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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 Enrico Forestieri
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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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#include <config.h>
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#include "InsetMathSpecialChar.h"
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#include "MathSupport.h"
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#include "MathStream.h"
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#include "MetricsInfo.h"
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#include "Dimension.h"
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#include "LaTeXFeatures.h"
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#include "TextPainter.h"
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#include "frontends/FontMetrics.h"
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#include "frontends/Painter.h"
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#include "support/lassert.h"
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namespace lyx {
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InsetMathSpecialChar::InsetMathSpecialChar(docstring const & name)
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: name_(name), kerning_(0)
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{
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if (name.size() != 1) {
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if (name == "textasciicircum" || name == "mathcircumflex")
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char_ = '^';
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else if (name == "textasciitilde")
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char_ = '~';
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else if (name == "textbackslash")
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char_ = '\\';
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else
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LASSERT(false, char_ = '?');
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} else
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char_ = name.at(0);
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}
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Inset * InsetMathSpecialChar::clone() const
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{
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return new InsetMathSpecialChar(*this);
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}
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void InsetMathSpecialChar::metrics(MetricsInfo & mi, Dimension & dim) const
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{
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if (mi.base.fontname == "mathnormal") {
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Changer dummy = mi.base.font.changeShape(UP_SHAPE);;
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dim = theFontMetrics(mi.base.font).dimension(char_);
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} else {
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frontend::FontMetrics const & fm = theFontMetrics(mi.base.font);
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dim = fm.dimension(char_);
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kerning_ = mathed_char_kerning(mi.base.font, char_);
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}
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}
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void InsetMathSpecialChar::draw(PainterInfo & pi, int x, int y) const
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{
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if (pi.base.fontname == "mathnormal") {
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Changer dummy = pi.base.font.changeShape(UP_SHAPE);
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pi.draw(x, y, char_);
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} else {
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pi.draw(x, y, char_);
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}
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}
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void InsetMathSpecialChar::metricsT(TextMetricsInfo const &, Dimension & dim) const
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{
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dim.wid = 1;
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dim.asc = 1;
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dim.des = 0;
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}
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void InsetMathSpecialChar::drawT(TextPainter & pain, int x, int y) const
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{
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pain.draw(x, y, char_);
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}
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void InsetMathSpecialChar::write(WriteStream & os) const
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{
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os << '\\' << name_;
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if (name_.size() != 1)
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os.pendingSpace(true);
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}
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void InsetMathSpecialChar::validate(LaTeXFeatures & features) const
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{
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if (name_ == "mathcircumflex")
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features.require("mathcircumflex");
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}
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void InsetMathSpecialChar::normalize(NormalStream & os) const
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{
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os << "[char ";
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os.os().put(char_);
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os << " mathalpha]";
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}
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void InsetMathSpecialChar::maple(MapleStream & os) const
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{
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os.os().put(char_);
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}
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void InsetMathSpecialChar::mathematica(MathematicaStream & os) const
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{
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os.os().put(char_);
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}
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void InsetMathSpecialChar::octave(OctaveStream & os) const
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{
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os.os().put(char_);
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}
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void InsetMathSpecialChar::mathmlize(MathStream & ms) const
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{
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switch (char_) {
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case '&':
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ms << "&";
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break;
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default:
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ms.os().put(char_);
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break;
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}
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}
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void InsetMathSpecialChar::htmlize(HtmlStream & ms) const
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{
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switch (char_) {
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case '&':
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ms << "&";
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break;
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default:
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ms.os().put(char_);
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break;
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}
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}
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} // namespace lyx
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