mirror of
https://git.lyx.org/repos/lyx.git
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fe87869cb7
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@4289 a592a061-630c-0410-9148-cb99ea01b6c8
136 lines
2.5 KiB
C
136 lines
2.5 KiB
C
#include <config.h>
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#ifdef __GNUG__
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#pragma implementation
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#endif
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#include "math_charinset.h"
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#include "LColor.h"
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#include "frontends/Painter.h"
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#include "frontends/font_metrics.h"
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#include "support/LOstream.h"
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#include "debug.h"
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#include "math_support.h"
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#include "math_mathmlstream.h"
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#include "LaTeXFeatures.h"
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#include "textpainter.h"
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#include <cctype>
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#include <cstring>
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using std::ostream;
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using std::endl;
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#ifndef CXX_GLOBAL_CSTD
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using std::strchr;
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using std::isalpha;
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#endif
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namespace {
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bool isBinaryOp(char c)
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{
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return strchr("+-<>=/*", c);
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}
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bool slanted(char c)
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{
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//if (strchr("0123456789;:!|[]().,?+/-*<>=", c)
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return isalpha(c);
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}
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}
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MathCharInset::MathCharInset(char c)
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: char_(c)
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{}
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MathInset * MathCharInset::clone() const
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{
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return new MathCharInset(*this);
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}
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void MathCharInset::metrics(MathMetricsInfo & mi) const
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{
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#if 1
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if (slanted(char_) && !mi.base.fontinset) {
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MathShapeChanger dummy(mi.base.font, LyXFont::ITALIC_SHAPE);
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mathed_char_dim(mi.base.font, char_, ascent_, descent_, width_);
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} else {
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mathed_char_dim(mi.base.font, char_, ascent_, descent_, width_);
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}
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if (isBinaryOp(char_))
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width_ += 2 * font_metrics::width(' ', mi.base.font);
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#else
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whichFont(font_, code_, mi);
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mathed_char_dim(font_, char_, ascent_, descent_, width_);
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if (isBinaryOp(char_, code_))
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width_ += 2 * font_metrics::width(' ', font_);
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#endif
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}
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void MathCharInset::draw(MathPainterInfo & pi, int x, int y) const
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{
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//lyxerr << "drawing '" << char_ << "' code: " << pi.code << endl;
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if (isBinaryOp(char_))
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x += font_metrics::width(' ', pi.base.font);
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#if 1
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if (slanted(char_) && !pi.base.fontinset) {
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MathShapeChanger dummy(pi.base.font, LyXFont::ITALIC_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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#else
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drawChar(pain, font_, x, y, char_);
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#endif
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}
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void MathCharInset::metricsT(TextMetricsInfo const &) const
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{
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width_ = 1;
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ascent_ = 1;
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descent_ = 0;
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}
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void MathCharInset::drawT(TextPainter & pain, int x, int y) const
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{
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//lyxerr << "drawing text '" << char_ << "' code: " << code_ << endl;
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pain.draw(x, y, char_);
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}
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void MathCharInset::write(WriteStream & os) const
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{
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os << char_;
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}
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void MathCharInset::normalize(NormalStream & os) const
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{
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os << "[char " << char_ << " " << "mathalpha" << "]";
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}
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bool MathCharInset::isRelOp() const
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{
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return char_ == '=' || char_ == '<' || char_ == '>';
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}
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bool MathCharInset::match(MathInset * p) const
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{
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MathCharInset const * q = p->asCharInset();
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return q && char_ == q->char_;
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}
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