lyx_mirror/src/lyxfont.h

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// -*- C++ -*-
/* This file is part of
* ======================================================
*
* LyX, The Document Processor
*
* Copyright 1995 Matthias Ettrich
* Copyright 1995-2001 The LyX Team.
*
* ====================================================== */
#ifndef LYXFONT_H
#define LYXFONT_H
#include <iosfwd>
#include "LString.h"
#include "LColor.h"
class LyXLex;
class BufferParams;
class Language;
///
class LyXFont {
public:
/** The value INHERIT_* means that the font attribute is
inherited from the layout. In the case of layout fonts, the
attribute is inherited from the default font.
The value IGNORE_* is used with LyXFont::update() when the
attribute should not be changed.
*/
enum FONT_FAMILY {
///
ROMAN_FAMILY, // fontstruct rely on this to be 0
///
SANS_FAMILY,
///
TYPEWRITER_FAMILY,
///
SYMBOL_FAMILY,
///
CMR_FAMILY,
///
CMSY_FAMILY,
///
CMM_FAMILY,
///
CMEX_FAMILY,
///
MSA_FAMILY,
///
MSB_FAMILY,
///
EUFRAK_FAMILY,
///
WASY_FAMILY,
///
INHERIT_FAMILY,
///
IGNORE_FAMILY,
///
NUM_FAMILIES = INHERIT_FAMILY
};
///
enum FONT_SERIES {
///
MEDIUM_SERIES, // fontstruct rely on this to be 0
///
BOLD_SERIES,
///
INHERIT_SERIES,
///
IGNORE_SERIES
};
///
enum FONT_SHAPE {
///
UP_SHAPE, // fontstruct rely on this to be 0
///
ITALIC_SHAPE,
///
SLANTED_SHAPE,
///
SMALLCAPS_SHAPE,
///
INHERIT_SHAPE,
///
IGNORE_SHAPE
};
///
enum FONT_SIZE {
///
SIZE_TINY, // fontstruct rely on this to be 0
///
SIZE_SCRIPT,
///
SIZE_FOOTNOTE,
///
SIZE_SMALL,
///
SIZE_NORMAL,
///
SIZE_LARGE,
///
SIZE_LARGER,
///
SIZE_LARGEST,
///
SIZE_HUGE,
///
SIZE_HUGER,
///
INCREASE_SIZE,
///
DECREASE_SIZE,
///
INHERIT_SIZE,
///
IGNORE_SIZE
};
/// Used for emph, underbar, noun and latex toggles
enum FONT_MISC_STATE {
///
OFF,
///
ON,
///
TOGGLE,
///
INHERIT,
///
IGNORE
};
/// Trick to overload constructor and make it megafast
enum FONT_INIT1 {
///
ALL_INHERIT
};
///
enum FONT_INIT2 {
///
ALL_IGNORE
};
///
enum FONT_INIT3 {
///
ALL_SANE
};
///
LyXFont();
/// Shortcut initialization
explicit
LyXFont(LyXFont::FONT_INIT1);
/// Shortcut initialization
explicit
LyXFont(LyXFont::FONT_INIT2);
/// Shortcut initialization
explicit
LyXFont(LyXFont::FONT_INIT3);
/// Shortcut initialization
LyXFont(LyXFont::FONT_INIT1, Language const * l);
/// Shortcut initialization
LyXFont(LyXFont::FONT_INIT2, Language const * l);
/// Shortcut initialization
LyXFont(LyXFont::FONT_INIT3, Language const * l);
/// Decreases font size by one
LyXFont & decSize();
/// Increases font size by one
LyXFont & incSize();
///
FONT_FAMILY family() const;
///
FONT_SERIES series() const;
///
FONT_SHAPE shape() const;
///
FONT_SIZE size() const;
///
FONT_MISC_STATE emph() const;
///
FONT_MISC_STATE underbar() const;
///
FONT_MISC_STATE noun() const;
///
FONT_MISC_STATE number() const;
///
LColor::color color() const;
///
Language const * language() const;
///
bool isRightToLeft() const;
///
bool isVisibleRightToLeft() const;
///
bool isSymbolFont() const;
///
LyXFont & setFamily(LyXFont::FONT_FAMILY f);
///
LyXFont & setSeries(LyXFont::FONT_SERIES s);
///
LyXFont & setShape(LyXFont::FONT_SHAPE s);
///
LyXFont & setSize(LyXFont::FONT_SIZE s);
///
LyXFont & setEmph(LyXFont::FONT_MISC_STATE e);
///
LyXFont & setUnderbar(LyXFont::FONT_MISC_STATE u);
///
LyXFont & setNoun(LyXFont::FONT_MISC_STATE n);
///
LyXFont & setNumber(LyXFont::FONT_MISC_STATE n);
///
LyXFont & setColor(LColor::color c);
///
LyXFont & setLanguage(Language const * l);
/// Set family after LyX text format
LyXFont & setLyXFamily(string const &);
/// Set series after LyX text format
LyXFont & setLyXSeries(string const &);
/// Set shape after LyX text format
LyXFont & setLyXShape(string const &);
/// Set size after LyX text format
LyXFont & setLyXSize(string const &);
/// Returns misc flag after LyX text format
LyXFont::FONT_MISC_STATE setLyXMisc(string const &);
/// Sets color after LyX text format
LyXFont & setLyXColor(string const &);
/// Returns size of font in LaTeX text notation
string const latexSize() const;
/** Updates font settings according to request.
If an attribute is IGNORE, the attribute is left as it is.
When toggleall = true, all properties that matches the font in use
will have the effect that the properties is reset to the
default. If we have a text that is TYPEWRITER_FAMILY, and is
update()'ed with TYPEWRITER_FAMILY, the operation will be as if
a INHERIT_FAMILY was asked for. This is necessary for the
toggle-user-defined-style button on the toolbar.
*/
void update(LyXFont const & newfont,
Language const * default_lang,
bool toggleall = false);
/** Reduce font to fall back to template where possible.
Equal fields are reduced to INHERIT */
void reduce(LyXFont const & tmplt);
/// Realize font from a template (INHERIT are realized)
LyXFont & realize(LyXFont const & tmplt);
/// Is a given font fully resolved?
bool resolved() const;
/// Read a font specification from LyXLex. Used for layout files.
LyXFont & lyxRead(LyXLex &);
/// Writes the changes from this font to orgfont in .lyx format in file
void lyxWriteChanges(LyXFont const & orgfont, std::ostream &) const;
/** Writes the head of the LaTeX needed to change to this font.
Writes to string, the head of the LaTeX needed to change
to this font. Returns number of chars written. Base is the
font state active now.
*/
int latexWriteStartChanges(std::ostream &, LyXFont const & base,
LyXFont const & prev) const;
/** Writes tha tail of the LaTeX needed to chagne to this font.
Returns number of chars written. Base is the font state we want
to achieve.
*/
int latexWriteEndChanges(std::ostream &, LyXFont const & base,
LyXFont const & next) const;
/// Build GUI description of font state
string const stateText(BufferParams * params) const;
///
LColor::color realColor() const;
///
friend
bool operator==(LyXFont const & font1, LyXFont const & font2);
/// Converts logical attributes to concrete shape attribute
LyXFont::FONT_SHAPE realShape() const;
/** Compaq cxx 6.5 requires that the definition be public so that
it can compile operator==()
*/
struct FontBits {
///
FONT_FAMILY family;
///
FONT_SERIES series;
///
FONT_SHAPE shape;
///
FONT_SIZE size;
///
LColor::color color;
///
FONT_MISC_STATE emph;
///
FONT_MISC_STATE underbar;
///
FONT_MISC_STATE noun;
///
FONT_MISC_STATE number;
};
private:
///
FontBits bits;
///
Language const * lang;
/// Sane font
static FontBits sane;
/// All inherit font
static FontBits inherit;
/// All ignore font
static FontBits ignore;
/// Updates a misc setting according to request
LyXFont::FONT_MISC_STATE setMisc(LyXFont::FONT_MISC_STATE newfont,
LyXFont::FONT_MISC_STATE org);
};
inline
LyXFont::FONT_SHAPE LyXFont::shape() const
{
return bits.shape;
}
inline
LyXFont::FONT_FAMILY LyXFont::family() const
{
return bits.family;
}
inline
LyXFont::FONT_SERIES LyXFont::series() const
{
return bits.series;
}
inline
LyXFont::FONT_SIZE LyXFont::size() const
{
return bits.size;
}
inline
LyXFont::FONT_MISC_STATE LyXFont::emph() const
{
return bits.emph;
}
inline
LyXFont::FONT_MISC_STATE LyXFont::noun() const
{
return bits.noun;
}
inline
bool LyXFont::isSymbolFont() const
{
switch (family()) {
case LyXFont::SYMBOL_FAMILY:
case LyXFont::CMSY_FAMILY:
case LyXFont::CMM_FAMILY:
case LyXFont::CMEX_FAMILY:
case LyXFont::MSA_FAMILY:
case LyXFont::MSB_FAMILY:
case LyXFont::WASY_FAMILY:
return true;
default:
return false;
}
}
///
std::ostream & operator<<(std::ostream &, LyXFont::FONT_MISC_STATE);
bool operator==(LyXFont::FontBits const & lhs, LyXFont::FontBits const & rhs);
inline
bool operator!=(LyXFont::FontBits const & lhs, LyXFont::FontBits const & rhs)
{
return !(lhs == rhs);
}
///
inline
bool operator==(LyXFont const & font1, LyXFont const & font2)
{
return font1.bits == font2.bits &&
font1.lang == font2.lang;
}
///
inline
bool operator!=(LyXFont const & font1, LyXFont const & font2)
{
return !(font1 == font2);
}
#endif