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1120aa806c
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@3586 a592a061-630c-0410-9148-cb99ea01b6c8
92 lines
2.2 KiB
C++
92 lines
2.2 KiB
C++
// -*- C++ -*-
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/**
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* \file lyxlength.h
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* Copyright 1995-2002 the LyX Team
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* Read the file COPYING
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*
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* \author Matthias Ettrich
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*/
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#ifndef LYX_LENGTH_H
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#define LYX_LENGTH_H
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#ifdef __GNUG__
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#pragma interface
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#endif
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#include "LString.h"
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/**
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* LyXLength - Represents latex length measurement
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*/
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class LyXLength {
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public:
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/// length units
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enum UNIT {
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SP, ///< Scaled point (65536sp = 1pt) TeX's smallest unit.
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PT, ///< Point = 1/72.27in = 0.351mm
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BP, ///< Big point (72bp = 1in), also PostScript point
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DD, ///< Didot point = 1/72 of a French inch, = 0.376mm
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MM, ///< Millimeter = 2.845pt
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PC, ///< Pica = 12pt = 4.218mm
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CC, ///< Cicero = 12dd = 4.531mm
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CM, ///< Centimeter = 10mm = 2.371pc
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IN, ///< Inch = 25.4mm = 72.27pt = 6.022pc
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EX, ///< Height of a small "x" for the current font.
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EM, ///< Width of capital "M" in current font.
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MU, ///< Math unit (18mu = 1em) for positioning in math mode
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PW, ///< Percent of columnwidth both "%" or "%c"
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PE, ///< FIXME
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PP, ///< Percent of pagewidth
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PL, ///< Percent of linewidth
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UNIT_NONE ///< no unit
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};
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///
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LyXLength();
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///
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LyXLength(double v, LyXLength::UNIT u);
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/// "data" must be a decimal number, followed by a unit
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explicit LyXLength(string const & data);
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///
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double value() const;
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///
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LyXLength::UNIT unit() const;
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///
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void value(double);
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///
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void unit(LyXLength::UNIT unit);
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///
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bool zero() const;
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/// return string representation
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string const asString() const;
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/// return string representation for LaTeX
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string const asLatexString() const;
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/// return the on-screen size of this length
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int inPixels(int default_width, int default_height) const;
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/** If "data" is valid, the length represented by it is
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stored into "result", if that is not 0. */
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friend bool isValidLength(string const & data, LyXLength * result = 0);
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private:
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///
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double val_;
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///
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LyXLength::UNIT unit_;
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};
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///
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bool operator==(LyXLength const & l1, LyXLength const & l2);
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///
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bool operator!=(LyXLength const & l1, LyXLength const & l2);
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///
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bool isValidLength(string const & data, LyXLength * result);
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/// return the name of the given unit number
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char const * stringFromUnit(int unit);
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#endif // LYXLENGTH_H
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