/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
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** $QT_END_LICENSE$
**
****************************************************************************/
#include "qdir.h"
#include "qscreen_qws.h" //so we can check for rotation
#include "qwindowsystem_qws.h"
#include "qlibraryinfo.h"
#include "qabstractfileengine.h"
#include <QtCore/qsettings.h>
#if !defined(QT_NO_FREETYPE)
#include "qfontengine_ft_p.h"
#include <ft2build.h>
#include FT_FREETYPE_H
#endif
#include "qfontengine_qpf_p.h"
#include "private/qfactoryloader_p.h"
#include "private/qcore_unix_p.h" // overrides QT_OPEN
#include "qabstractfontengine_qws.h"
#include "qabstractfontengine_p.h"
#include <qdatetime.h>
#include "qplatformdefs.h"
// for mmap
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <errno.h>
#ifdef QT_FONTS_ARE_RESOURCES
#include <qresource.h>
#endif
QT_BEGIN_NAMESPACE
#ifndef QT_NO_LIBRARY
Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
(QFontEngineFactoryInterface_iid, QLatin1String("/fontengines"), Qt::CaseInsensitive))
#endif
const quint8 DatabaseVersion = 4;
// QFontDatabasePrivate::addFont() went into qfontdatabase.cpp
#ifndef QT_NO_QWS_QPF2
void QFontDatabasePrivate::addQPF2File(const QByteArray &file)
{
#ifndef QT_FONTS_ARE_RESOURCES
struct stat st;
if (stat(file.constData(), &st))
return;
int f = QT_OPEN(file, O_RDONLY, 0);
if (f < 0)
return;
const uchar *data = (const uchar *)mmap(0, st.st_size, PROT_READ, MAP_SHARED, f, 0);
const int dataSize = st.st_size;
#else
QResource res(QLatin1String(file.constData()));
const uchar *data = res.data();
const int dataSize = res.size();
//qDebug() << "addQPF2File" << file << data;
#endif
if (data && data != (const uchar *)MAP_FAILED) {
if (QFontEngineQPF::verifyHeader(data, dataSize)) {
QString fontName = QFontEngineQPF::extractHeaderField(data, QFontEngineQPF::Tag_FontName).toString();
int pixelSize = QFontEngineQPF::extractHeaderField(data, QFontEngineQPF::Tag_PixelSize).toInt();
QVariant weight = QFontEngineQPF::extractHeaderField(data, QFontEngineQPF::Tag_Weight);
QVariant style = QFontEngineQPF::extractHeaderField(data, QFontEngineQPF::Tag_Style);
QByteArray writingSystemBits = QFontEngineQPF::extractHeaderField(data, QFontEngineQPF::Tag_WritingSystems).toByteArray();
if (!fontName.isEmpty() && pixelSize) {
int fontWeight = 50;
if (weight.type() == QVariant::Int || weight.type() == QVariant::UInt)
fontWeight = weight.toInt();
bool italic = static_cast<QFont::Style>(style.toInt()) & QFont::StyleItalic;
QList<QFontDatabase::WritingSystem> writingSystems;
for (int i = 0; i < writingSystemBits.count(); ++i) {
uchar currentByte = writingSystemBits.at(i);
for (int j = 0; j < 8; ++j) {
if (currentByte & 1)
writingSystems << QFontDatabase::WritingSystem(i * 8 + j);
currentByte >>= 1;
}
}
addFont(fontName, /*foundry*/ "prerendered", fontWeight, italic,
pixelSize, file, /*fileIndex*/ 0,
/*antialiased*/ true, writingSystems);
}
} else {
qDebug() << "header verification of QPF2 font" << file << "failed. maybe it is corrupt?";
}
#ifndef QT_FONTS_ARE_RESOURCES
munmap((void *)data, st.st_size);
#endif
}
#ifndef QT_FONTS_ARE_RESOURCES
QT_CLOSE(f);
#endif
}
#endif // QT_NO_QWS_QPF2
// QFontDatabasePrivate::addTTFile() went into qfontdatabase.cpp
static void registerFont(QFontDatabasePrivate::ApplicationFont *fnt);
extern QString qws_fontCacheDir();
#ifndef QT_FONTS_ARE_RESOURCES
bool QFontDatabasePrivate::loadFromCache(const QString &fontPath)
{
const bool weAreTheServer = QWSServer::instance();
QString fontDirFile = fontPath + QLatin1String("/fontdir");
QFile binaryDb(qws_fontCacheDir() + QLatin1String("/fontdb"));
if (weAreTheServer) {
QDateTime dbTimeStamp = QFileInfo(binaryDb.fileName()).lastModified();
QDateTime fontPathTimeStamp = QFileInfo(fontPath).lastModified();
if (dbTimeStamp < fontPathTimeStamp)
return false; // let the caller create the cache
if (QFile::exists(fontDirFile)) {
QDateTime fontDirTimeStamp = QFileInfo(fontDirFile).lastModified();
if (dbTimeStamp < fontDirTimeStamp)
return false;
}
}
if (!binaryDb.open(QIODevice::ReadOnly)) {
if (weAreTheServer)
return false; // let the caller create the cache
qFatal("QFontDatabase::loadFromCache: Could not open font database cache!");
}
QDataStream stream(&binaryDb);
quint8 version = 0;
quint8 dataStreamVersion = 0;
stream >> version >> dataStreamVersion;
if (version != DatabaseVersion || dataStreamVersion != stream.version()) {
if (weAreTheServer)
return false; // let the caller create the cache
qFatal("QFontDatabase::loadFromCache: Wrong version of the font database cache detected. Found %d/%d expected %d/%d",
version, dataStreamVersion, DatabaseVersion, stream.version());
}
QString originalFontPath;
stream >> originalFontPath;
if (originalFontPath != fontPath) {
if (weAreTheServer)
return false; // let the caller create the cache
qFatal("QFontDatabase::loadFromCache: Font path doesn't match. Found %s in database, expected %s", qPrintable(originalFontPath), qPrintable(fontPath));
}
QString familyname;
stream >> familyname;
//qDebug() << "populating database from" << binaryDb.fileName();
while (!familyname.isEmpty() && !stream.atEnd()) {
QString foundryname;
int weight;
quint8 italic;
int pixelSize;
QByteArray file;
int fileIndex;
quint8 antialiased;
quint8 writingSystemCount;
QList<QFontDatabase::WritingSystem> writingSystems;
stream >> foundryname >> weight >> italic >> pixelSize
>> file >> fileIndex >> antialiased >> writingSystemCount;
for (quint8 i = 0; i < writingSystemCount; ++i) {
quint8 ws;
stream >> ws;
writingSystems.append(QFontDatabase::WritingSystem(ws));
}
addFont(familyname, foundryname.toLatin1().constData(), weight, italic, pixelSize, file, fileIndex, antialiased,
writingSystems);
stream >> familyname;
}
stream >> fallbackFamilies;
//qDebug() << "fallback families from cache:" << fallbackFamilies;
return true;
}
#endif // QT_FONTS_ARE_RESOURCES
/*!
\internal
*/
static QString qwsFontPath()
{
QString fontpath = QString::fromLocal8Bit(qgetenv("QT_QWS_FONTDIR"));
if (fontpath.isEmpty()) {
#ifdef QT_FONTS_ARE_RESOURCES
fontpath = QLatin1String(":/qt/fonts");
#else
#ifndef QT_NO_SETTINGS
fontpath = QLibraryInfo::location(QLibraryInfo::LibrariesPath);
fontpath += QLatin1String("/fonts");
#else
fontpath = QLatin1String("/lib/fonts");
#endif
#endif //QT_FONTS_ARE_RESOURCES
}
return fontpath;
}
#if defined(QFONTDATABASE_DEBUG) && defined(QT_FONTS_ARE_RESOURCES)
class FriendlyResource : public QResource
{
public:
bool isDir () const { return QResource::isDir(); }
bool isFile () const { return QResource::isFile(); }
QStringList children () const { return QResource::children(); }
};
#endif
/*!
\internal
*/
static void initializeDb()
{
QFontDatabasePrivate *db = privateDb();
if (!db || db->count)
return;
QString fontpath = qwsFontPath();
#ifndef QT_FONTS_ARE_RESOURCES
QString fontDirFile = fontpath + QLatin1String("/fontdir");
if(!QFile::exists(fontpath)) {
qFatal("QFontDatabase: Cannot find font directory %s - is Qt installed correctly?",
fontpath.toLocal8Bit().constData());
}
const bool loaded = db->loadFromCache(fontpath);
if (db->reregisterAppFonts) {
db->reregisterAppFonts = false;
for (int i = 0; i < db->applicationFonts.count(); ++i)
if (!db->applicationFonts.at(i).families.isEmpty()) {
registerFont(&db->applicationFonts[i]);
}
}
if (loaded)
return;
QString dbFileName = qws_fontCacheDir() + QLatin1String("/fontdb");
QFile binaryDb(dbFileName + QLatin1String(".tmp"));
binaryDb.open(QIODevice::WriteOnly | QIODevice::Truncate);
db->stream = new QDataStream(&binaryDb);
*db->stream << DatabaseVersion << quint8(db->stream->version()) << fontpath;
// qDebug() << "creating binary database at" << binaryDb.fileName();
// Load in font definition file
FILE* fontdef=fopen(fontDirFile.toLocal8Bit().constData(),"r");
if (fontdef) {
char buf[200]="";
char name[200]="";
char render[200]="";
char file[200]="";
char isitalic[10]="";
char flags[10]="";
do {
fgets(buf,200,fontdef);
if (buf[0] != '#') {
int weight=50;
int size=0;
sscanf(buf,"%s %s %s %s %d %d %s",name,file,render,isitalic,&weight,&size,flags);
QString filename;
if (file[0] != '/')
filename.append(fontpath).append(QLatin1Char('/'));
filename += QLatin1String(file);
bool italic = isitalic[0] == 'y';
bool smooth = QByteArray(flags).contains('s');
if (file[0] && QFile::exists(filename))
db->addFont(QString::fromUtf8(name), /*foundry*/"", weight, italic, size/10, QFile::encodeName(filename), /*fileIndex*/ 0, smooth);
}
} while (!feof(fontdef));
fclose(fontdef);
}
QDir dir(fontpath, QLatin1String("*.qpf"));
for (int i=0; i<int(dir.count()); i++) {
int u0 = dir[i].indexOf(QLatin1Char('_'));
int u1 = dir[i].indexOf(QLatin1Char('_'), u0+1);
int u2 = dir[i].indexOf(QLatin1Char('_'), u1+1);
int u3 = dir[i].indexOf(QLatin1Char('.'), u1+1);
if (u2 < 0) u2 = u3;
QString familyname = dir[i].left(u0);
int pixelSize = dir[i].mid(u0+1,u1-u0-1).toInt()/10;
bool italic = dir[i].mid(u2-1,1) == QLatin1String("i");
int weight = dir[i].mid(u1+1,u2-u1-1-(italic?1:0)).toInt();
db->addFont(familyname, /*foundry*/ "qt", weight, italic, pixelSize, QFile::encodeName(dir.absoluteFilePath(dir[i])),
/*fileIndex*/ 0, /*antialiased*/ true);
}
#ifndef QT_NO_FREETYPE
dir.setNameFilters(QStringList() << QLatin1String("*.ttf")
<< QLatin1String("*.ttc") << QLatin1String("*.pfa")
<< QLatin1String("*.pfb"));
dir.refresh();
for (int i = 0; i < int(dir.count()); ++i) {
const QByteArray file = QFile::encodeName(dir.absoluteFilePath(dir[i]));
// qDebug() << "looking at" << file;
db->addTTFile(file);
}
#endif
#ifndef QT_NO_QWS_QPF2
dir.setNameFilters(QStringList() << QLatin1String("*.qpf2"));
dir.refresh();
for (int i = 0; i < int(dir.count()); ++i) {
const QByteArray file = QFile::encodeName(dir.absoluteFilePath(dir[i]));
// qDebug() << "looking at" << file;
db->addQPF2File(file);
}
#endif
#else //QT_FONTS_ARE_RESOURCES
#ifdef QFONTDATABASE_DEBUG
{
QResource fontdir(fontpath);
FriendlyResource *fr = static_cast<FriendlyResource*>(&fontdir);
qDebug() << "fontdir" << fr->isValid() << fr->isDir() << fr->children();
}
#endif
QDir dir(fontpath, QLatin1String("*.qpf2"));
for (int i = 0; i < int(dir.count()); ++i) {
const QByteArray file = QFile::encodeName(dir.absoluteFilePath(dir[i]));
//qDebug() << "looking at" << file;
db->addQPF2File(file);
}
#endif //QT_FONTS_ARE_RESOURCES
#ifdef QFONTDATABASE_DEBUG
// print the database
for (int f = 0; f < db->count; f++) {
QtFontFamily *family = db->families[f];
FD_DEBUG("'%s' %s", qPrintable(family->name), (family->fixedPitch ? "fixed" : ""));
#if 0
for (int i = 0; i < QFont::LastPrivateScript; ++i) {
FD_DEBUG("\t%s: %s", qPrintable(QFontDatabase::scriptName((QFont::Script) i)),
((family->scripts[i] & QtFontFamily::Supported) ? "Supported" :
(family->scripts[i] & QtFontFamily::UnSupported) == QtFontFamily::UnSupported ?
"UnSupported" : "Unknown"));
}
#endif
for (int fd = 0; fd < family->count; fd++) {
QtFontFoundry *foundry = family->foundries[fd];
FD_DEBUG("\t\t'%s'", qPrintable(foundry->name));
for (int s = 0; s < foundry->count; s++) {
QtFontStyle *style = foundry->styles[s];
FD_DEBUG("\t\t\tstyle: style=%d weight=%d\n"
"\t\t\tstretch=%d",
style->key.style, style->key.weight,
style->key.stretch);
if (style->smoothScalable)
FD_DEBUG("\t\t\t\tsmooth scalable");
else if (style->bitmapScalable)
FD_DEBUG("\t\t\t\tbitmap scalable");
if (style->pixelSizes) {
FD_DEBUG("\t\t\t\t%d pixel sizes", style->count);
for (int z = 0; z < style->count; ++z) {
QtFontSize *size = style->pixelSizes + z;
FD_DEBUG("\t\t\t\t size %5d",
size->pixelSize);
}
}
}
}
}
#endif // QFONTDATABASE_DEBUG
#ifndef QT_NO_LIBRARY
QStringList pluginFoundries = loader()->keys();
// qDebug() << "plugin foundries:" << pluginFoundries;
for (int i = 0; i < pluginFoundries.count(); ++i) {
const QString foundry(pluginFoundries.at(i));
QFontEngineFactoryInterface *factory = qobject_cast<QFontEngineFactoryInterface *>(loader()->instance(foundry));
if (!factory) {
qDebug() << "Could not load plugin for foundry" << foundry;
continue;
}
QList<QFontEngineInfo> fonts = factory->availableFontEngines();
for (int i = 0; i < fonts.count(); ++i) {
QFontEngineInfo info = fonts.at(i);
int weight = info.weight();
if (weight <= 0)
weight = QFont::Normal;
db->addFont(info.family(), foundry.toLatin1().constData(),
weight, info.style() != QFont::StyleNormal,
qRound(info.pixelSize()), /*file*/QByteArray(),
/*fileIndex*/0, /*antiAliased*/true,
info.writingSystems());
}
}
#endif
#ifndef QT_FONTS_ARE_RESOURCES
// the empty string/familyname signifies the end of the font list.
*db->stream << QString();
#endif
{
bool coveredWritingSystems[QFontDatabase::WritingSystemsCount] = { 0 };
db->fallbackFamilies.clear();
for (int i = 0; i < db->count; ++i) {
QtFontFamily *family = db->families[i];
bool add = false;
if (family->count == 0)
continue;
if (family->bogusWritingSystems)
continue;
for (int ws = 1; ws < QFontDatabase::WritingSystemsCount; ++ws) {
if (coveredWritingSystems[ws])
continue;
if (family->writingSystems[ws] & QtFontFamily::Supported) {
coveredWritingSystems[ws] = true;
add = true;
}
}
if (add)
db->fallbackFamilies << family->name;
}
//qDebug() << "fallbacks on the server:" << db->fallbackFamilies;
#ifndef QT_FONTS_ARE_RESOURCES
*db->stream << db->fallbackFamilies;
#endif
}
#ifndef QT_FONTS_ARE_RESOURCES
delete db->stream;
db->stream = 0;
QFile::remove(dbFileName);
binaryDb.rename(dbFileName);
#endif
}
// called from qwindowsystem_qws.cpp
void qt_qws_init_fontdb()
{
initializeDb();
}
#ifndef QT_NO_SETTINGS
// called from qapplication_qws.cpp
void qt_applyFontDatabaseSettings(const QSettings &settings)
{
initializeDb();
QFontDatabasePrivate *db = privateDb();
for (int i = 0; i < db->count; ++i) {
QtFontFamily *family = db->families[i];
if (settings.contains(family->name))
family->fallbackFamilies = settings.value(family->name).toStringList();
}
if (settings.contains(QLatin1String("Global Fallbacks")))
db->fallbackFamilies = settings.value(QLatin1String("Global Fallbacks")).toStringList();
}
#endif // QT_NO_SETTINGS
static inline void load(const QString & = QString(), int = -1)
{
initializeDb();
}
#ifndef QT_NO_FREETYPE
#if (FREETYPE_MAJOR*10000+FREETYPE_MINOR*100+FREETYPE_PATCH) >= 20105
#define X_SIZE(face,i) ((face)->available_sizes[i].x_ppem)
#define Y_SIZE(face,i) ((face)->available_sizes[i].y_ppem)
#else
#define X_SIZE(face,i) ((face)->available_sizes[i].width << 6)
#define Y_SIZE(face,i) ((face)->available_sizes[i].height << 6)
#endif
#endif // QT_NO_FREETYPE
static
QFontEngine *loadSingleEngine(int script, const QFontPrivate *fp,
const QFontDef &request,
QtFontFamily *family, QtFontFoundry *foundry,
QtFontStyle *style, QtFontSize *size)
{
Q_UNUSED(script);
Q_UNUSED(fp);
#ifdef QT_NO_FREETYPE
Q_UNUSED(foundry);
#endif
#ifdef QT_NO_QWS_QPF
Q_UNUSED(family);
#endif
Q_ASSERT(size);
int pixelSize = size->pixelSize;
if (!pixelSize || (style->smoothScalable && pixelSize == SMOOTH_SCALABLE))
pixelSize = request.pixelSize;
#ifndef QT_NO_QWS_QPF2
if (foundry->name == QLatin1String("prerendered")) {
#ifdef QT_FONTS_ARE_RESOURCES
QResource res(QLatin1String(size->fileName.constData()));
if (res.isValid()) {
QFontEngineQPF *fe = new QFontEngineQPF(request, res.data(), res.size());
if (fe->isValid())
return fe;
delete fe;
qDebug() << "fontengine is not valid! " << size->fileName;
} else {
qDebug() << "Resource not valid" << size->fileName;
}
#else
int f = ::open(size->fileName, O_RDONLY, 0);
if (f >= 0) {
QFontEngineQPF *fe = new QFontEngineQPF(request, f);
if (fe->isValid())
return fe;
delete fe; // will close f
qDebug() << "fontengine is not valid!";
}
#endif
} else
#endif
if ( foundry->name != QLatin1String("qt") ) { ///#### is this the best way????
QString file = QFile::decodeName(size->fileName);
QFontDef def = request;
def.pixelSize = pixelSize;
#ifdef QT_NO_QWS_SHARE_FONTS
bool shareFonts = false;
#else
static bool dontShareFonts = !qgetenv("QWS_NO_SHARE_FONTS").isEmpty();
bool shareFonts = !dontShareFonts;
#endif
QScopedPointer<QFontEngine> engine;
#ifndef QT_NO_LIBRARY
QFontEngineFactoryInterface *factory = qobject_cast<QFontEngineFactoryInterface *>(loader()->instance(foundry->name));
if (factory) {
QFontEngineInfo info;
info.setFamily(request.family);
info.setPixelSize(request.pixelSize);
info.setStyle(QFont::Style(request.style));
info.setWeight(request.weight);
// #### antialiased
QAbstractFontEngine *customEngine = factory->create(info);
if (customEngine) {
engine.reset(new QProxyFontEngine(customEngine, def));
if (shareFonts) {
QVariant hint = customEngine->fontProperty(QAbstractFontEngine::CacheGlyphsHint);
if (hint.isValid())
shareFonts = hint.toBool();
else
shareFonts = (pixelSize < 64);
}
}
}
#endif // QT_NO_LIBRARY
if ((engine.isNull() && !file.isEmpty() && QFile::exists(file)) || privateDb()->isApplicationFont(file)) {
QFontEngine::FaceId faceId;
faceId.filename = file.toLocal8Bit();
faceId.index = size->fileIndex;
#ifndef QT_NO_FREETYPE
QScopedPointer<QFontEngineFT> fte(new QFontEngineFT(def));
bool antialias = style->antialiased && !(request.styleStrategy & QFont::NoAntialias);
if (fte->init(faceId, antialias,
antialias ? QFontEngineFT::Format_A8 : QFontEngineFT::Format_Mono)) {
#ifdef QT_NO_QWS_QPF2
return fte.take();
#else
// try to distinguish between bdf and ttf fonts we can pre-render
// and don't try to share outline fonts
shareFonts = shareFonts
&& !fte->defaultGlyphs()->outline_drawing
&& !fte->getSfntTable(MAKE_TAG('h', 'e', 'a', 'd')).isEmpty();
engine.reset(fte.take());
#endif
}
#endif // QT_NO_FREETYPE
}
if (!engine.isNull()) {
#if !defined(QT_NO_QWS_QPF2) && !defined(QT_FONTS_ARE_RESOURCES)
if (shareFonts) {
QScopedPointer<QFontEngineQPF> fe(new QFontEngineQPF(def, -1, engine.data()));
engine.take();
if (fe->isValid())
return fe.take();
qWarning("Initializing QFontEngineQPF failed for %s", qPrintable(file));
engine.reset(fe->takeRenderingEngine());
}
#endif
return engine.take();
}
} else
{
#ifndef QT_NO_QWS_QPF
QString fn = qwsFontPath();
fn += QLatin1Char('/');
fn += family->name.toLower()
+ QLatin1Char('_') + QString::number(pixelSize*10)
+ QLatin1Char('_') + QString::number(style->key.weight)
+ (style->key.style == QFont::StyleItalic ?
QLatin1String("i.qpf") : QLatin1String(".qpf"));
//###rotation ###
QFontEngine *fe = new QFontEngineQPF1(request, fn);
return fe;
#endif // QT_NO_QWS_QPF
}
return new QFontEngineBox(pixelSize);
}
static
QFontEngine *loadEngine(int script, const QFontPrivate *fp,
const QFontDef &request,
QtFontFamily *family, QtFontFoundry *foundry,
QtFontStyle *style, QtFontSize *size)
{
QScopedPointer<QFontEngine> engine(loadSingleEngine(script, fp, request, family, foundry,
style, size));
if (!engine.isNull()
&& script == QUnicodeTables::Common
&& !(request.styleStrategy & QFont::NoFontMerging) && !engine->symbol) {
QStringList fallbacks = privateDb()->fallbackFamilies;
if (family && !family->fallbackFamilies.isEmpty())
fallbacks = family->fallbackFamilies;
QFontEngine *fe = new QFontEngineMultiQWS(engine.data(), script, fallbacks);
engine.take();
engine.reset(fe);
}
return engine.take();
}
static void registerFont(QFontDatabasePrivate::ApplicationFont *fnt)
{
QFontDatabasePrivate *db = privateDb();
#ifdef QT_NO_FREETYPE
Q_UNUSED(fnt);
#else
fnt->families = db->addTTFile(QFile::encodeName(fnt->fileName), fnt->data);
db->fallbackFamilies += fnt->families;
#endif
db->reregisterAppFonts = true;
}
bool QFontDatabase::removeApplicationFont(int handle)
{
QMutexLocker locker(fontDatabaseMutex());
QFontDatabasePrivate *db = privateDb();
if (handle < 0 || handle >= db->applicationFonts.count())
return false;
db->applicationFonts[handle] = QFontDatabasePrivate::ApplicationFont();
db->reregisterAppFonts = true;
db->invalidate();
return true;
}
bool QFontDatabase::removeAllApplicationFonts()
{
QMutexLocker locker(fontDatabaseMutex());
QFontDatabasePrivate *db = privateDb();
if (db->applicationFonts.isEmpty())
return false;
db->applicationFonts.clear();
db->invalidate();
return true;
}
bool QFontDatabase::supportsThreadedFontRendering()
{
return true;
}
/*!
\internal
*/
QFontEngine *
QFontDatabase::findFont(int script, const QFontPrivate *fp,
const QFontDef &request)
{
QMutexLocker locker(fontDatabaseMutex());
const int force_encoding_id = -1;
if (!privateDb()->count)
initializeDb();
QScopedPointer<QFontEngine> fe;
if (fp) {
if (fp->rawMode) {
fe.reset(loadEngine(script, fp, request, 0, 0, 0, 0));
// if we fail to load the rawmode font, use a 12pixel box engine instead
if (fe.isNull())
fe.reset(new QFontEngineBox(12));
return fe.take();
}
QFontCache::Key key(request, script);
fe.reset(QFontCache::instance()->findEngine(key));
if (! fe.isNull())
return fe.take();
}
QString family_name, foundry_name;
QtFontStyle::Key styleKey;
styleKey.style = request.style;
styleKey.weight = request.weight;
styleKey.stretch = request.stretch;
char pitch = request.ignorePitch ? '*' : request.fixedPitch ? 'm' : 'p';
parseFontName(request.family, foundry_name, family_name);
FM_DEBUG("QFontDatabase::findFont\n"
" request:\n"
" family: %s [%s], script: %d\n"
" weight: %d, style: %d\n"
" stretch: %d\n"
" pixelSize: %g\n"
" pitch: %c",
family_name.isEmpty() ? "-- first in script --" : family_name.toLatin1().constData(),
foundry_name.isEmpty() ? "-- any --" : foundry_name.toLatin1().constData(),
script, request.weight, request.style, request.stretch, request.pixelSize, pitch);
if (qt_enable_test_font && request.family == QLatin1String("__Qt__Box__Engine__")) {
fe.reset(new QTestFontEngine(request.pixelSize));
fe->fontDef = request;
}
if (fe.isNull())
{
QtFontDesc desc;
match(script, request, family_name, foundry_name, force_encoding_id, &desc);
if (desc.family != 0 && desc.foundry != 0 && desc.style != 0
) {
FM_DEBUG(" BEST:\n"
" family: %s [%s]\n"
" weight: %d, style: %d\n"
" stretch: %d\n"
" pixelSize: %d\n"
" pitch: %c\n"
" encoding: %d\n",
desc.family->name.toLatin1().constData(),
desc.foundry->name.isEmpty() ? "-- none --" : desc.foundry->name.toLatin1().constData(),
desc.style->key.weight, desc.style->key.style,
desc.style->key.stretch, desc.size ? desc.size->pixelSize : 0xffff,
'p', 0
);
fe.reset(loadEngine(script, fp, request, desc.family, desc.foundry, desc.style, desc.size
));
} else {
FM_DEBUG(" NO MATCH FOUND\n");
}
if (! fe.isNull())
initFontDef(desc, request, &fe->fontDef);
}
#ifndef QT_NO_FREETYPE
if (! fe.isNull()) {
if (scriptRequiresOpenType(script) && fe->type() == QFontEngine::Freetype) {
HB_Face hbFace = static_cast<QFontEngineFT *>(fe.data())->harfbuzzFace();
if (!hbFace || !hbFace->supported_scripts[script]) {
FM_DEBUG(" OpenType support missing for script\n");
fe.reset(0);
}
}
}
#endif
if (! fe.isNull()) {
if (fp) {
QFontDef def = request;
if (def.family.isEmpty()) {
def.family = fp->request.family;
def.family = def.family.left(def.family.indexOf(QLatin1Char(',')));
}
QFontCache::Key key(def, script);
QFontCache::instance()->insertEngine(key, fe.data());
}
}
if (fe.isNull()) {
if (!request.family.isEmpty())
return 0;
FM_DEBUG("returning box engine");
fe.reset(new QFontEngineBox(request.pixelSize));
if (fp) {
QFontCache::Key key(request, script);
QFontCache::instance()->insertEngine(key, fe.data());
}
}
if (fp && fp->dpi > 0) {
fe->fontDef.pointSize = qreal(double((fe->fontDef.pixelSize * 72) / fp->dpi));
} else {
fe->fontDef.pointSize = request.pointSize;
}
return fe.take();
}
void QFontDatabase::load(const QFontPrivate *d, int script)
{
QFontDef req = d->request;
if (req.pixelSize == -1)
req.pixelSize = qRound(req.pointSize*d->dpi/72);
if (req.pointSize < 0)
req.pointSize = req.pixelSize*72.0/d->dpi;
if (!d->engineData) {
QFontCache::Key key(req, script);
// look for the requested font in the engine data cache
d->engineData = QFontCache::instance()->findEngineData(key);
if (!d->engineData) {
// create a new one
d->engineData = new QFontEngineData;
QT_TRY {
QFontCache::instance()->insertEngineData(key, d->engineData);
} QT_CATCH(...) {
delete d->engineData;
d->engineData = 0;
QT_RETHROW;
}
} else {
d->engineData->ref.ref();
}
}
// the cached engineData could have already loaded the engine we want
if (d->engineData->engines[script]) return;
// double scale = 1.0; // ### TODO: fix the scale calculations
// list of families to try
QStringList family_list;
if (!req.family.isEmpty()) {
family_list = req.family.split(QLatin1Char(','));
// append the substitute list for each family in family_list
QStringList subs_list;
QStringList::ConstIterator it = family_list.constBegin(), end = family_list.constEnd();
for (; it != end; ++it)
subs_list += QFont::substitutes(*it);
family_list += subs_list;
// append the default fallback font for the specified script
// family_list << ... ; ###########
// add the default family
QString defaultFamily = QApplication::font().family();
if (! family_list.contains(defaultFamily))
family_list << defaultFamily;
// add QFont::defaultFamily() to the list, for compatibility with
// previous versions
family_list << QApplication::font().defaultFamily();
}
// null family means find the first font matching the specified script
family_list << QString();
// load the font
QFontEngine *engine = 0;
QStringList::ConstIterator it = family_list.constBegin(), end = family_list.constEnd();
for (; !engine && it != end; ++it) {
req.family = *it;
engine = QFontDatabase::findFont(script, d, req);
if (engine && (engine->type()==QFontEngine::Box) && !req.family.isEmpty())
engine = 0;
}
engine->ref.ref();
d->engineData->engines[script] = engine;
}
QT_END_NAMESPACE