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e2bc7ffae3
RefChanger temporarily assigns a value to a non-const reference of any
kind. RefChanger provides a flexible and uniform generalisation of the various
scope guards previously derived from the old Changer class in MetricsInfo.h.
As before, a temporary assignment lasts as long as the Changer object lives. But
the new Changer is movable. In particular, contorsions are no longer needed to
change a private field. Special code can be moved into the appropriate classes,
and it is no longer necessary to create a new class for each specific use.
Syntax change:
FontSetChanger dummy(mi.base, value);
-> Changer dummy = mi.base.changeFontSet(value);
New function for generating arbitrary Changers:
Changer dummy = make_change(ref, val, condition);
Bugfix:
* Fix the display of \displaystyle{\substack{\frac{xyz}{}}} (missing style
change).
108 lines
2.3 KiB
C++
108 lines
2.3 KiB
C++
/**
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* \file InsetMathFontOld.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 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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#include <config.h>
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#include "InsetMathFontOld.h"
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#include "MathData.h"
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#include "MathParser.h"
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#include "MathStream.h"
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#include "MathSupport.h"
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#include "MetricsInfo.h"
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#include "support/gettext.h"
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#include "support/lstrings.h"
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#include <ostream>
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using namespace lyx::support;
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namespace lyx {
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InsetMathFontOld::InsetMathFontOld(Buffer * buf, latexkeys const * key)
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: InsetMathNest(buf, 1), key_(key), current_mode_(TEXT_MODE)
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{
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//lock(true);
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}
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Inset * InsetMathFontOld::clone() const
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{
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return new InsetMathFontOld(*this);
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}
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void InsetMathFontOld::metrics(MetricsInfo & mi, Dimension & dim) const
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{
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current_mode_ = isTextFont(from_ascii(mi.base.fontname))
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? TEXT_MODE : MATH_MODE;
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docstring const font = current_mode_ == MATH_MODE
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? "math" + key_->name : "text" + key_->name;
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// When \cal is used in text mode, the font is not changed
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bool really_change_font = font != "textcal";
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Changer dummy = mi.base.changeFontSet(font, really_change_font);
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cell(0).metrics(mi, dim);
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metricsMarkers(dim);
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}
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void InsetMathFontOld::draw(PainterInfo & pi, int x, int y) const
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{
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current_mode_ = isTextFont(from_ascii(pi.base.fontname))
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? TEXT_MODE : MATH_MODE;
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docstring const font = current_mode_ == MATH_MODE
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? "math" + key_->name : "text" + key_->name;
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// When \cal is used in text mode, the font is not changed
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bool really_change_font = font != "textcal";
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Changer dummy = pi.base.changeFontSet(font, really_change_font);
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cell(0).draw(pi, x + 1, y);
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drawMarkers(pi, x, y);
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}
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void InsetMathFontOld::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
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{
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cell(0).metricsT(mi, dim);
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}
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void InsetMathFontOld::drawT(TextPainter & pain, int x, int y) const
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{
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cell(0).drawT(pain, x, y);
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}
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void InsetMathFontOld::write(WriteStream & os) const
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{
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os << "{\\" << key_->name << ' ' << cell(0) << '}';
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}
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void InsetMathFontOld::normalize(NormalStream & os) const
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{
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os << "[font " << key_->name << ' ' << cell(0) << ']';
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}
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void InsetMathFontOld::infoize(odocstream & os) const
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{
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os << bformat(_("Font: %1$s"), key_->name);
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}
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} // namespace lyx
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