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// -*- 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 "FontLoader.h"
#endif
#include "gettext.h"
#include "FontLoader.h"
#include "FontInfo.h"
#include "error.h"
#include "lyxrc.h" // lyxrc.font_*
extern LyXRC * lyxrc;
#include "minibuffer.h"
extern MiniBuffer *minibuffer;
// Initialize font loader
FontLoader::FontLoader()
{
reset();
}
// Destroy font loader
FontLoader::~FontLoader()
{
unload();
}
// Update fonts after zoom, dpi, font names, or norm change
// For now, we just ditch all fonts we have. Later, we should
// reuse the ones that are already loaded.
void FontLoader::update()
{
unload();
}
// Reset font loader
void FontLoader::reset()
{
// Clear font infos, font structs and font metrics
for (int i1=0; i1<4; i1++)
for (int i2=0; i2<2; i2++)
for (int i3=0; i3<4; i3++) {
fontinfo[i1][i2][i3] = 0;
for (int i4=0; i4<10; i4++) {
fontstruct[i1][i2][i3][i4] = 0;
}
}
}
// Unload all fonts
void FontLoader::unload()
{
// Unload all fonts
for (int i1=0; i1<4; i1++)
for (int i2=0; i2<2; i2++)
for (int i3=0; i3<4; i3++) {
if (fontinfo[i1][i2][i3]) {
delete fontinfo[i1][i2][i3];
fontinfo[i1][i2][i3] = 0;
}
for (int i4=0; i4<10; i4++) {
if (fontstruct[i1][i2][i3][i4]) {
XFreeFont(fl_display, fontstruct[i1][i2][i3][i4]);
fontstruct[i1][i2][i3][i4] = 0;
}
}
}
}
// Get font info
/* Takes care of finding which font that can match the given request. Tries
different alternatives. */
void FontLoader::getFontinfo(LyXFont::FONT_FAMILY family,
LyXFont::FONT_SERIES series,
LyXFont::FONT_SHAPE shape)
{
// Do we have the font info already?
if (fontinfo[family][series][shape] != 0)
return;
// Special code for the symbol family
if (family == LyXFont::SYMBOL_FAMILY){
fontinfo[family][series][shape] = new FontInfo("-*-symbol-*");
return;
}
// Normal font. Let's search for an existing name that matches.
LString ffamily;
LString fseries;
LString fshape;
LString norm = lyxrc->font_norm;
LString fontname;
FontInfo * fi = new FontInfo();
fontinfo[family][series][shape] = fi;
for (int cfam=0; cfam < 2; cfam++) {
// Determine family name
switch (family) {
case LyXFont::ROMAN_FAMILY:
switch (cfam) {
case 0: ffamily = lyxrc->roman_font_name; break;
case 1: ffamily = "-*-times";
default: cfam = 100;
}
break;
case LyXFont::SANS_FAMILY:
switch (cfam) {
case 0: ffamily = lyxrc->sans_font_name; break;
case 1: ffamily = "-*-helvetica";
default: cfam = 100;
}
break;
case LyXFont::TYPEWRITER_FAMILY:
switch (cfam) {
case 0: ffamily = lyxrc->typewriter_font_name; break;
case 1: ffamily = "-*-courier";
default: cfam = 100;
}
break;
default: ;
}
for (int cser=0; cser < 4; cser++) {
// Determine series name
switch (series) {
case LyXFont::MEDIUM_SERIES:
switch (cser) {
case 0: fseries = "-medium"; break;
case 1: fseries = "-book"; break;
case 2: fseries = "-light";
default: cser = 100;
}
break;
case LyXFont::BOLD_SERIES:
switch (cser) {
case 0: fseries = "-bold"; break;
case 1: fseries = "-black"; break;
case 2: fseries = "-demi"; break;
case 3: fseries = "-demibold";
default: cser = 100;
}
break;
default: ;
}
for (int csha=0; csha < 2; csha++) {
// Determine shape name
switch (shape) {
case LyXFont::UP_SHAPE:
case LyXFont::SMALLCAPS_SHAPE:
switch (csha) {
case 0: fshape = "-r";
default: csha = 100;
}
break;
case LyXFont::ITALIC_SHAPE:
switch (csha) {
case 0: fshape = "-i"; break;
case 1: fshape = "-o";
default: csha = 100;
}
break;
case LyXFont::SLANTED_SHAPE:
switch (csha) {
case 0: fshape = "-o"; break;
case 1: fshape = "-i";
default: csha = 100;
}
break;
default: ;
}
//
fontname = ffamily + fseries + fshape +
"-normal-*-*-*-*-*-*-*-" + norm;
fi->setPattern(fontname);
if (fi->exist()) {
return;
}
}
}
}
}
/// Do load font
XFontStruct* FontLoader::doLoad(LyXFont::FONT_FAMILY family,
LyXFont::FONT_SERIES series,
LyXFont::FONT_SHAPE shape,
LyXFont::FONT_SIZE size)
{
getFontinfo(family,series,shape);
int fsize = (int) ( (lyxrc->font_sizes[size] * lyxrc->dpi *
(lyxrc->zoom/100.0) ) / 72.27 + 0.5 );
LString font = fontinfo[family][series][shape]->getFontname(fsize);
if (font.empty()) {
lyxerr.print("No font matches request. Using 'fixed'.");
lyxerr.print("Start LyX as 'lyx -dbg 515' to get more information.");
font = "fixed";
}
minibuffer->Store();
minibuffer->Set(_("Loading font into X-Server..."));
XFontStruct* fs = XLoadQueryFont(fl_display, font.c_str());
if (fs == 0) {
if (font=="fixed") {
lyxerr.print("We're doomed. Can't get 'fixed' font.");
} else {
lyxerr.print("Could not get font. Using 'fixed'.");
fs = XLoadQueryFont(fl_display, "fixed");
}
} else {
if (lyxerr.debugging(Error::FONT)) {
// Tell user the font matching
LyXFont f;
f.setFamily(family);
f.setSeries(series);
f.setShape(shape);
f.setSize(size);
// The rest of the attributes are not interesting
f.setEmph(LyXFont::INHERIT);
f.setUnderbar(LyXFont::INHERIT);
f.setNoun(LyXFont::INHERIT);
f.setLatex(LyXFont::INHERIT);
f.setColor(LyXFont::INHERIT_COLOR);
lyxerr.print(LString("Font '") + f.stateText()
+ "' matched by\n" + font + '\n');
}
}
minibuffer->Reset();
fontstruct[family][series][shape][size] = fs;
return fs;
}
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