|
// -*- C++ -*-
/* This file is part of
* ======================================================
*
* LyX, The Document Processor
*
* Copyright (C) 1997 Asger Alstrup
* and the LyX Team.
*
*======================================================*/
#include <config.h>
#include <math.h> // fabs()
#include <stdlib.h> // atoi()
#ifdef __GNUG__
#pragma implementation "FontInfo.h"
#endif
#include "FontInfo.h"
#include "error.h"
#include "lyxrc.h" // lyxrc.use_scalable_fonts
extern LyXRC * lyxrc;
/// Load font close to this size
LString FontInfo::getFontname(int size)
{
if (!exist())
return LString();
int closestind = -1;
double error = 100000;
for (int i=0; i<matches; i++) {
if (sizes[i] == 0) {
// Scalable font should not be considered close
} else if (sizes[i] == size) {
lyxerr.debug(LString("Exact font match with\n")
+ strings[i], Error::FONT);
return strings[i];
} else if (fabs(sizes[i] - size - 0.1) < error) {
error = fabs(sizes[i] - size - 0.1);
closestind = i;
}
}
if (scalable && lyxrc->use_scalable_fonts) {
// We can use scalable
LString font = resize(strings[scaleindex], size);
lyxerr.debug("Using scalable font to get\n"
+ font, Error::FONT);
return font;
}
// Did any fonts get close?
if (closestind == -1) {
// No, and we are not allowed to use scalables, so...
return LString();
}
// We use the closest match
lyxerr.debug(LString("Using closest font match to get size ") + size
+ " with\n" + strings[closestind], Error::FONT);
return strings[closestind];
}
/// Build newly sized font string
LString FontInfo::resize(LString const & font, int size) const {
// Find the position of the size spec
int cut=0, before=0, after=0;
for (int i=0; i<font.length(); i++) {
if (font[i] == '-') {
cut++;
if (cut==7) {
before = i;
} else if (cut==8) {
after = i;
break;
}
}
}
LString head = font;
head.substring(0, before);
LString tail = font;
tail.substring(after,tail.length()-1);
return head + size + tail;
}
/// Set new pattern
void FontInfo::setPattern(LString const & pat)
{
release();
init();
pattern = pat;
}
/// Query font in X11
void FontInfo::query()
{
if (queried)
return;
if (pattern.empty()) {
lyxerr.print("Can not use empty font name for font query.");
queried = true;
return;
}
char ** list = XListFonts(fl_display, pattern.c_str(), 100, &matches);
if (list == 0) {
// No fonts matched
scalable = false;
sizes = 0;
} else {
release();
sizes = new int[matches];
strings = new LString[matches];
// We have matches. Run them through
for(int i=0; i<matches; i++) {
LString name(list[i]);
sizes[i] = atoi(name.token('-',7).c_str());
strings[i] = name;
if (sizes[i] == 0) {
if (scaleindex == -1) {
scaleindex = i;
}
scalable = true;
};
};
XFreeFontNames(list);
}
queried = true;
}
/// Release allocated stuff
void FontInfo::release()
{
if (sizes) {
delete [] sizes;
sizes = 0;
}
if (strings) {
delete [] strings;
strings = 0;
}
}
¤ Dauer der Verarbeitung: 0.22 Sekunden
(vorverarbeitet)
¤
|
Haftungshinweis
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung ist noch experimentell.
|
