lyx_mirror/src/frontends/qt2/qfont_loader.C

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/**
* \file qfont_loader.C
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Asger Alstrup
* \author John Levon
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "debug.h"
#include "qfont_loader.h"
#include "qt_helpers.h"
#include "lyxrc.h"
#include "support/lstrings.h"
#include "frontends/lyx_gui.h"
#include <qfontinfo.h>
#include <boost/tuple/tuple.hpp>
#ifdef Q_WS_X11
#include <qwidget.h>
#include <X11/Xlib.h>
#include <algorithm>
#endif
#include "support/systemcall.h"
#include "support/filetools.h"
using lyx::support::contains;
using lyx::support::LibFileSearch;
using lyx::support::OnlyPath;
using lyx::support::Systemcall;
using std::endl;
using std::make_pair;
using std::pair;
using std::vector;
using std::string;
#ifdef Q_WS_MACX
#include <ApplicationServices/ApplicationServices.h>
#endif
namespace {
void addFontPath()
{
#ifdef Q_WS_X11
string const dir = OnlyPath(LibFileSearch("xfonts", "fonts.dir"));
if (!dir.empty()) {
QWidget w;
int n;
char ** p = XGetFontPath(w.x11Display(), &n);
if (std::find(p, p + n, dir) != p + n)
return;
lyxerr[Debug::FONT] << "Adding " << dir
<< " to the font path." << endl;
string const command = "xset fp+ " + dir;
Systemcall s;
if (!s.startscript(Systemcall::Wait, command))
return;
lyxerr << "Unable to add " << dir << "to the font path."
<< endl;
}
#endif
#ifdef Q_WS_MACX
CFBundleRef myAppBundle = CFBundleGetMainBundle();
CFURLRef myAppResourcesURL, FontsURL;
FSRef fontDirRef;
FSSpec fontDirSpec;
CFStringRef filePath = CFStringCreateWithBytes(kCFAllocatorDefault,
(UInt8 *) "Fonts", strlen("Fonts"),
kCFStringEncodingISOLatin1, false);
myAppResourcesURL = CFBundleCopyResourcesDirectoryURL(myAppBundle);
FontsURL = CFURLCreateCopyAppendingPathComponent(kCFAllocatorDefault,
myAppResourcesURL, filePath, true);
if (lyxerr.debugging(Debug::FONT)) {
UInt8 buf[255];
if (CFURLGetFileSystemRepresentation(FontsURL, true, buf, 255))
lyxerr << "Adding Fonts directory: " << buf << endl;
}
CFURLGetFSRef (FontsURL, &fontDirRef);
OSStatus err = FSGetCatalogInfo (&fontDirRef, kFSCatInfoNone,
NULL, NULL, &fontDirSpec, NULL);
if (err)
lyxerr << "FSGetCatalogInfo err = " << err << endl;
err = FMActivateFonts (&fontDirSpec, NULL, NULL,
kFMLocalActivationContext);
if (err)
lyxerr << "FMActivateFonts err = " << err << endl;
#endif
}
struct symbol_font {
LyXFont::FONT_FAMILY lyx_family;
string family;
string xlfd;
};
symbol_font symbol_fonts[] = {
{ LyXFont::SYMBOL_FAMILY,
"symbol",
"-*-symbol-*-*-*-*-*-*-*-*-*-*-adobe-fontspecific" },
{ LyXFont::CMR_FAMILY,
"cmr10",
"-*-cmr10-medium-*-*-*-*-*-*-*-*-*-*-*" },
{ LyXFont::CMSY_FAMILY,
"cmsy10",
"-*-cmsy10-*-*-*-*-*-*-*-*-*-*-*-*" },
{ LyXFont::CMM_FAMILY,
"cmmi10",
"-*-cmmi10-medium-*-*-*-*-*-*-*-*-*-*-*" },
{ LyXFont::CMEX_FAMILY,
"cmex10",
"-*-cmex10-*-*-*-*-*-*-*-*-*-*-*-*" },
{ LyXFont::MSA_FAMILY,
"msam10",
"-*-msam10-*-*-*-*-*-*-*-*-*-*-*-*" },
{ LyXFont::MSB_FAMILY,
"msbm10",
"-*-msbm10-*-*-*-*-*-*-*-*-*-*-*-*" },
{ LyXFont::EUFRAK_FAMILY,
"eufm10",
"-*-eufm10-medium-*-*-*-*-*-*-*-*-*-*-*" },
{ LyXFont::WASY_FAMILY,
"wasy10",
"-*-wasy10-medium-*-*-*-*-*-*-*-*-*-*-*" }
};
size_t const nr_symbol_fonts = sizeof(symbol_fonts) / sizeof(symbol_font);
string getRawName(string const & family)
{
for (size_t i = 0; i < nr_symbol_fonts; ++i) {
if (family == symbol_fonts[i].family)
return symbol_fonts[i].xlfd;
}
lyxerr[Debug::FONT] << "BUG: family not found !" << endl;
return string();
}
string const symbolFamily(LyXFont::FONT_FAMILY family)
{
for (size_t i = 0; i < nr_symbol_fonts; ++i) {
if (family == symbol_fonts[i].lyx_family)
return symbol_fonts[i].family;
}
return string();
}
bool isSymbolFamily(LyXFont::FONT_FAMILY family)
{
return family >= LyXFont::SYMBOL_FAMILY &&
family <= LyXFont::WASY_FAMILY;
}
bool isChosenFont(QFont & font, string const & family)
{
lyxerr[Debug::FONT] << "raw: " << fromqstr(font.rawName()) << endl;
QFontInfo fi(font);
// Note Qt lies about family quite often
lyxerr[Debug::FONT] << "alleged fi family: "
<< fromqstr(fi.family()) << endl;
// So we check rawName first
if (contains(fromqstr(font.rawName()), family)) {
lyxerr[Debug::FONT] << " got it ";
return true;
}
// Qt 3.2 beta1 returns "xft" for all xft fonts
if (font.rawName() == "xft") {
if (contains(fromqstr(fi.family()), family)) {
lyxerr[Debug::FONT] << " got it (Xft) ";
return true;
}
}
return false;
}
pair<QFont, bool> const getSymbolFont(string const & family)
{
lyxerr[Debug::FONT] << "Looking for font family "
<< family << " ... ";
string upper = family;
upper[0] = toupper(family[0]);
QFont font;
font.setFamily(toqstr(family));
if (isChosenFont(font, family)) {
lyxerr[Debug::FONT] << "normal!" << endl;
return make_pair<QFont, bool>(font, true);
}
font.setFamily(toqstr(upper));
if (isChosenFont(font, upper)) {
lyxerr[Debug::FONT] << "upper!" << endl;
return make_pair<QFont, bool>(font, true);
}
// A simple setFamily() fails on Qt 2
font.setRawName(toqstr(getRawName(family)));
if (isChosenFont(font, family)) {
lyxerr[Debug::FONT] << "raw version!" << endl;
return make_pair<QFont, bool>(font, true);
}
lyxerr[Debug::FONT] << " FAILED :-(" << endl;
return make_pair<QFont, bool>(font, false);
}
} // namespace anon
qfont_loader::qfont_loader()
{
for (int i1 = 0; i1 < LyXFont::NUM_FAMILIES; ++i1) {
for (int i2 = 0; i2 < 2; ++i2) {
for (int i3 = 0; i3 < 4; ++i3) {
for (int i4 = 0; i4 < 10; ++i4) {
fontinfo_[i1][i2][i3][i4] = 0;
}
}
}
}
}
qfont_loader::~qfont_loader()
{
}
void qfont_loader::update()
{
for (int i1 = 0; i1 < LyXFont::NUM_FAMILIES; ++i1) {
for (int i2 = 0; i2 < 2; ++i2) {
for (int i3 = 0; i3 < 4; ++i3) {
for (int i4 = 0; i4 < 10; ++i4) {
delete fontinfo_[i1][i2][i3][i4];
fontinfo_[i1][i2][i3][i4] = 0;
}
}
}
}
}
QFont const & qfont_loader::get(LyXFont const & f)
{
return getfontinfo(f)->font;
}
qfont_loader::font_info::font_info(LyXFont const & f)
: metrics(font)
{
string const pat = symbolFamily(f.family());
if (!pat.empty()) {
bool tmp;
boost::tie(font, tmp) = getSymbolFont(pat);
} else {
switch (f.family()) {
case LyXFont::ROMAN_FAMILY:
font.setFamily(toqstr(makeFontName(lyxrc.roman_font_name,
lyxrc.roman_font_foundry)));
break;
case LyXFont::SANS_FAMILY:
font.setFamily(toqstr(makeFontName(lyxrc.sans_font_name,
lyxrc.sans_font_foundry)));
break;
case LyXFont::TYPEWRITER_FAMILY:
font.setFamily(toqstr(makeFontName(lyxrc.typewriter_font_name,
lyxrc.typewriter_font_foundry)));
break;
default:
break;
}
}
font.setPointSizeFloat(lyxrc.font_sizes[f.size()]
* lyxrc.zoom / 100.0);
switch (f.series()) {
case LyXFont::MEDIUM_SERIES:
font.setWeight(QFont::Normal);
break;
case LyXFont::BOLD_SERIES:
font.setWeight(QFont::Bold);
break;
default:
break;
}
switch (f.realShape()) {
case LyXFont::ITALIC_SHAPE:
case LyXFont::SLANTED_SHAPE:
font.setItalic(true);
break;
default:
break;
}
if (lyxerr.debugging(Debug::FONT)) {
lyxerr[Debug::FONT] << "Font '" << f.stateText(0)
<< "' matched by\n" << font.rawName() << endl;
}
lyxerr[Debug::FONT] << "The font has size: "
<< font.pointSizeFloat() << endl;
// Is this an exact match?
if (font.exactMatch()) {
lyxerr[Debug::FONT] << "This font is an exact match" << endl;
} else {
lyxerr[Debug::FONT] << "This font is NOT an exact match"
<< endl;
}
lyxerr[Debug::FONT] << "XFLD: " << font.rawName() << endl;
metrics = QFontMetrics(font);
}
qfont_loader::font_info * qfont_loader::getfontinfo(LyXFont const & f)
{
font_info * fi = fontinfo_[f.family()][f.series()][f.realShape()][f.size()];
if (fi)
return fi;
font_info * fi2 = new font_info(f);
fontinfo_[f.family()][f.series()][f.realShape()][f.size()] = fi2;
return fi2;
}
int qfont_loader::charwidth(LyXFont const & f, Uchar val)
{
font_info * fi = getfontinfo(f);
font_info::WidthCache::const_iterator cit = fi->widthcache.find(val);
if (cit != fi->widthcache.end())
return cit->second;
int const w = fi->metrics.width(QChar(val));
fi->widthcache[val] = w;
return w;
}
bool qfont_loader::available(LyXFont const & f)
{
if (!lyx_gui::use_gui)
return false;
#ifdef Q_WS_MACX
static bool need_bundle_fonts = true;
if (need_bundle_fonts) {
addFontPath();
need_bundle_fonts = false;
}
#endif
static vector<bool> cache_set(LyXFont::NUM_FAMILIES, false);
static vector<bool> cache(LyXFont::NUM_FAMILIES, false);
LyXFont::FONT_FAMILY family = f.family();
if (cache_set[family])
return cache[family];
cache_set[family] = true;
string const pat = symbolFamily(family);
if (!pat.empty()) {
pair<QFont, bool> tmp = getSymbolFont(pat);
if (tmp.second) {
cache[family] = true;
return true;
}
// If the font is a tex symbol font and it is not available,
// we try to add the xfonts directory to the font path.
static bool first_time = true;
if (!first_time || family == LyXFont::SYMBOL_FAMILY
|| family == LyXFont::WASY_FAMILY)
return false;
first_time = false;
addFontPath();
tmp = getSymbolFont(pat);
if (tmp.second) {
cache[family] = true;
return true;
}
// We don't need to set cache[family] to false, as it
//is initialized to false;
return false;
}
// We don't care about non-symbol fonts
return false;
}