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11c2b7792c
The strategy adopted in bc47054b had some drawbacks related to the way
instant preview snippets are generated. See the subthread starting at
http://www.mail-archive.com/lyx-devel@lists.lyx.org/msg187916.html
for details.
The strategy adopted in this commit is that of adding macro definitions
only for the macros actually used in a preview snippet, independently
of whether some macro was already used in a previous snippet. In this way
the snippets don't need to be changed according to whether they are
compiled as a whole or separately from each other. This fact was causing
the regeneration of a preview snippet whenever the cursor entered the
corresponding inset, even if the generated image would have not changed.
The problem of defining or redefining a macro is taken care by the
python scripts.
150 lines
2.8 KiB
C++
150 lines
2.8 KiB
C++
// -*- C++ -*-
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/**
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* \file InsetMathFrac.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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* \author Uwe Stöhr
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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_FRAC_H
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#define MATH_FRAC_H
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#include "InsetMathNest.h"
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namespace lyx {
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class InsetMathFracBase : public InsetMathNest {
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public:
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///
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InsetMathFracBase(Buffer * buf, idx_type ncells = 2);
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///
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bool idxUpDown(Cursor &, bool up) const;
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///
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bool idxBackward(Cursor &) const { return false; }
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///
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bool idxForward(Cursor &) const { return false; }
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///
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InsetMathFracBase * asFracBaseInset() { return this; }
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///
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InsetMathFracBase const * asFracBaseInset() const { return this; }
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};
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/// Fraction like objects (frac, binom)
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class InsetMathFrac : public InsetMathFracBase {
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public:
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///
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enum Kind {
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FRAC,
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CFRAC,
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CFRACLEFT,
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CFRACRIGHT,
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DFRAC,
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TFRAC,
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OVER,
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ATOP,
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NICEFRAC,
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UNITFRAC,
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UNIT
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};
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///
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explicit InsetMathFrac(Buffer * buf, Kind kind = FRAC, idx_type ncells = 2);
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///
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bool idxForward(Cursor &) const;
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///
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bool idxBackward(Cursor &) const;
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///
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void metrics(MetricsInfo & mi, Dimension & dim) const;
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///
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void draw(PainterInfo &, int x, int y) const;
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///
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void metricsT(TextMetricsInfo const & mi, Dimension & dim) const;
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///
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void drawT(TextPainter &, int x, int y) const;
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/// identifies FracInsets
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InsetMathFrac * asFracInset();
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/// identifies FracInsets
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InsetMathFrac const * asFracInset() const;
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///
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docstring name() const;
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///
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bool extraBraces() const;
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///
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void write(WriteStream & os) const;
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///
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void maple(MapleStream &) const;
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///
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void mathematica(MathematicaStream &) const;
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///
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void octave(OctaveStream &) const;
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///
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void mathmlize(MathStream &) const;
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///
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void htmlize(HtmlStream &) const;
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///
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void validate(LaTeXFeatures & features) const;
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public:
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Inset * clone() const;
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///
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Kind kind_;
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};
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/// Binom like objects
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class InsetMathBinom : public InsetMathFracBase {
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public:
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///
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enum Kind {
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BINOM,
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DBINOM,
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TBINOM,
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CHOOSE,
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BRACE,
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BRACK
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};
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///
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explicit InsetMathBinom(Buffer * buf, Kind kind = BINOM);
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///
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void write(WriteStream & os) const;
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///
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void normalize(NormalStream &) const;
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///
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void metrics(MetricsInfo & mi, Dimension & dim) const;
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///
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void draw(PainterInfo &, int x, int y) const;
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/// draw decorations.
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void drawDecoration(PainterInfo & pi, int x, int y) const
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{ drawMarkers2(pi, x, y); }
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///
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bool extraBraces() const;
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///
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void mathmlize(MathStream &) const;
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///
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void htmlize(HtmlStream &) const;
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///
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void validate(LaTeXFeatures & features) const;
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///
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InsetCode lyxCode() const { return MATH_FRAC_CODE; }
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private:
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Inset * clone() const;
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///
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int dw(int height) const;
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///
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Kind kind_;
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};
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} // namespace lyx
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#endif
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