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// -*- C++ -*-
/* This file is part of
* ======================================================
*
* LyX, The Document Processor
*
* Copyright (C) 1997 Asger Alstrup
* and the LyX Team.
*
*======================================================*/
#ifndef _FONTINFO_H_
#define _FONTINFO_H_
#ifdef __GNUG__
#pragma interface
#endif
#include "LString.h"
/** This class manages a font.
The idea is to create a FontInfo object with a font name pattern with a
wildcard at the size field. Then this object can host request for font-
instances of any given size. If no exact match is found, the closest size
is chosen instead. If the font is scalable, the flag lyxrc->use_scalable_fonts
determines whether to allow scalable fonts to give an exact match. */
class FontInfo {
public:
///
FontInfo() { init(); }
///
FontInfo(LString const & pat)
: pattern(pat) { init(); }
/// Destructor
~FontInfo() { release(); }
/// Does any font match our pattern?
bool exist() {
query();
return matches != 0;
}
/// Is this font scalable?
bool isScalable() {
query();
return scalable;
}
/// Get existing pattern
LString getPattern() const { return pattern; }
/// Set new pattern
void setPattern(LString const & pat);
/** Return full name of font close to this size.
If impossible, result is the empty string */
LString getFontname(int size);
private:
/// Font pattern (with wildcard for size)
LString pattern;
/// Available size list
int * sizes;
/// Corresponding name list
LString * strings;
/// Number of matches
int matches;
/// Did we query X about this font?
bool queried;
/// Is this font scalable?
bool scalable;
/// Which index points to scalable font entry?
int scaleindex;
/// Initialize empty record
void init()
{
sizes = 0;
strings = 0;
matches = 0;
queried = false;
scalable = false;
scaleindex = -1;
}
/// Release allocated stuff
void release();
/// Ask X11 about this font pattern
void query();
/// Build newly sized font string
LString resize(LString const &, int size) const;
};
#endif
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