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https://git.lyx.org/repos/lyx.git
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f1ff990de7
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@7481 a592a061-630c-0410-9148-cb99ea01b6c8
160 lines
3.4 KiB
C
160 lines
3.4 KiB
C
#include <config.h>
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#include "math_charinset.h"
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#include "LColor.h"
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#include "dimension.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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using std::auto_ptr;
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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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extern bool has_math_fonts;
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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 ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z');
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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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auto_ptr<InsetBase> MathCharInset::clone() const
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{
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return auto_ptr<InsetBase>(new MathCharInset(*this));
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}
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void MathCharInset::metrics(MetricsInfo & mi, Dimension & dim) const
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{
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#if 1
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if (char_ == '=' && has_math_fonts) {
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FontSetChanger dummy(mi.base, "cmr");
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mathed_char_dim(mi.base.font, char_, dim);
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} else if ((char_ == '>' || char_ == '<') && has_math_fonts) {
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FontSetChanger dummy(mi.base, "cmm");
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mathed_char_dim(mi.base.font, char_, dim);
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} else if (slanted(char_) && mi.base.fontname == "mathnormal") {
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ShapeChanger dummy(mi.base.font, LyXFont::ITALIC_SHAPE);
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mathed_char_dim(mi.base.font, char_, dim);
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} else {
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mathed_char_dim(mi.base.font, char_, dim);
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}
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int const em = mathed_char_width(mi.base.font, 'M');
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if (isBinaryOp(char_))
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dim.wid += static_cast<int>(0.5*em+0.5);
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else if (char_ == '\'')
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dim.wid += static_cast<int>(0.1667*em+0.5);
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#else
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whichFont(font_, code_, mi);
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mathed_char_dim(font_, char_, dim_);
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if (isBinaryOp(char_, code_))
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width_ += 2 * font_metrics::width(' ', font_);
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lyxerr << "MathCharInset::metrics: " << dim << endl;
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#endif
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}
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void MathCharInset::draw(PainterInfo & pi, int x, int y) const
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{
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//lyxerr << "drawing '" << char_ << "' font: " << pi.base.fontname << endl;
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int const em = mathed_char_width(pi.base.font, 'M');
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if (isBinaryOp(char_))
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x += static_cast<int>(0.25*em+0.5);
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else if (char_ == '\'')
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x += static_cast<int>(0.0833*em+0.5);
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#if 1
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if (char_ == '=' && has_math_fonts) {
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FontSetChanger dummy(pi.base, "cmr");
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pi.draw(x, y, char_);
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} else if ((char_ == '>' || char_ == '<') && has_math_fonts) {
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FontSetChanger dummy(pi.base, "cmm");
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pi.draw(x, y, char_);
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} else if (slanted(char_) && pi.base.fontname == "mathnormal") {
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ShapeChanger 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 &, 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 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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void MathCharInset::octave(OctaveStream & os) const
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{
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os << char_;
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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 const * 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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