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katie/src/gui/text/qfontdatabase_x11.h
Ivailo Monev 74bb412630 copyright changes 
Signed-off-by: Ivailo Monev <xakepa10@laimg.moc>
2019-06-03 13:38:02 +00:00

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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Copyright (C) 2016-2019 Ivailo Monev
**
** This file is part of the QtGui module of the Katie Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <qplatformdefs.h>
#include <qdebug.h>
#include <qpaintdevice.h>
#include <qelapsedtimer.h>
#include <qfile.h>
#include <qtemporaryfile.h>
#include <qabstractfileengine.h>
#include <qmath.h>
#include <ctype.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <qt_x11_p.h>
#include <qx11info_x11.h>
#include <qfontengine_x11_p.h>
#ifndef QT_NO_FONTCONFIG
#include <ft2build.h>
#include FT_FREETYPE_H
#include <fontconfig/fcfreetype.h>
#endif
QT_BEGIN_NAMESPACE
// from qfont_x11.cpp
extern double qt_pointSize(double pixelSize, int dpi);
extern double qt_pixelSize(double pointSize, int dpi);
// from qapplication.cpp
extern bool qt_is_gui_used;
static inline void capitalize (char *s)
{
bool space = true;
while(*s) {
if (space)
*s = toupper(*s);
space = (*s == ' ');
++s;
}
}
/*
To regenerate the writingSystems_for_xlfd_encoding table, run
'util/unicode/x11/makeencodings' and paste the generated
'encodings.c' here.
*/
// ----- begin of generated code -----
struct XlfdEncoding {
const char *name;
int id;
int mib;
};
static const XlfdEncoding xlfd_encoding[] = {
{ "iso8859-1", 0, 4 },
{ "iso8859-2", 1, 5 },
{ "iso8859-3", 2, 6 },
{ "iso8859-4", 3, 7 },
{ "iso8859-9", 4, 12 },
{ "iso8859-10", 5, 13 },
{ "iso8859-13", 6, 109 },
{ "iso8859-14", 7, 110 },
{ "iso8859-15", 8, 111 },
{ "hp-roman8", 9, 2004 },
{ "iso8859-5", 10, 8 },
{ "*-cp1251", 11, 2251 },
{ "koi8-ru", 12, 2084 },
{ "koi8-u", 13, 2088 },
{ "koi8-r", 14, 2084 },
{ "iso8859-7", 15, 10 },
{ "iso8859-8", 16, 85 },
{ "gb18030-0", 17, -114 },
{ "gb18030.2000-0", 18, -113 },
{ "gbk-0", 19, -113 },
{ "gb2312.*-0", 20, 57 },
{ "jisx0201*-0", 21, 15 },
{ "jisx0208*-0", 22, 63 },
{ "ksc5601*-*", 23, 36 },
{ "big5hkscs-0", 24, -2101 },
{ "hkscs-1", 25, -2101 },
{ "big5*-*", 26, -2026 },
{ "tscii-*", 27, 2028 },
{ "tis620*-*", 28, 2259 },
{ "iso8859-11", 29, 2259 },
{ "mulelao-1", 30, -4242 },
{ "ethiopic-unicode", 31, 0 },
{ "iso10646-1", 32, 0 },
{ "unicode-*", 33, 0 },
{ "*-symbol", 34, 0 },
{ "*-fontspecific", 35, 0 },
{ "fontspecific-*", 36, 0 },
{ 0, 0, 0 }
};
// ----- end of generated code -----
const int numEncodings = sizeof(xlfd_encoding) / sizeof(XlfdEncoding) - 1;
int qt_encoding_id_for_mib(int mib)
{
const XlfdEncoding *enc = xlfd_encoding;
for (; enc->name; ++enc) {
if (enc->mib == mib)
return enc->id;
}
return -1;
}
#ifdef QFONTDATABASE_DEBUG
static const char * xlfd_for_id(int id)
{
// special case: -1 returns the "*-*" encoding, allowing us to do full
// database population in a single X server round trip.
if (id < 0 || id > numEncodings)
return "*-*";
return xlfd_encoding[id].name;
}
#endif
#ifndef QT_NO_FONTCONFIG
#ifndef FC_WIDTH
#define FC_WIDTH "width"
#endif
static int getFCWeight(int fc_weight)
{
int qtweight = QFont::Black;
if (fc_weight <= (FC_WEIGHT_LIGHT + FC_WEIGHT_MEDIUM) / 2)
qtweight = QFont::Light;
else if (fc_weight <= (FC_WEIGHT_MEDIUM + FC_WEIGHT_DEMIBOLD) / 2)
qtweight = QFont::Normal;
else if (fc_weight <= (FC_WEIGHT_DEMIBOLD + FC_WEIGHT_BOLD) / 2)
qtweight = QFont::DemiBold;
else if (fc_weight <= (FC_WEIGHT_BOLD + FC_WEIGHT_BLACK) / 2)
qtweight = QFont::Bold;
return qtweight;
}
QFontDef qt_FcPatternToQFontDef(FcPattern *pattern, const QFontDef &request)
{
QFontDef fontDef;
fontDef.styleStrategy = request.styleStrategy;
fontDef.hintingPreference = request.hintingPreference;
FcChar8 *value = 0;
if (FcPatternGetString(pattern, FC_FAMILY, 0, &value) == FcResultMatch) {
fontDef.family = QString::fromUtf8(reinterpret_cast<const char *>(value));
}
double dpi;
if (FcPatternGetDouble(pattern, FC_DPI, 0, &dpi) != FcResultMatch) {
if (qt_x11Data->display)
dpi = QX11Info::appDpiY();
else
dpi = qt_defaultDpiY();
}
double size;
if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &size) == FcResultMatch)
fontDef.pixelSize = size;
else
fontDef.pixelSize = 12;
fontDef.pointSize = qt_pointSize(fontDef.pixelSize, qRound(dpi));
/* ###
fontDef.styleHint
*/
int weight;
if (FcPatternGetInteger(pattern, FC_WEIGHT, 0, &weight) != FcResultMatch)
weight = FC_WEIGHT_MEDIUM;
fontDef.weight = getFCWeight(weight);
int slant;
if (FcPatternGetInteger(pattern, FC_SLANT, 0, &slant) != FcResultMatch)
slant = FC_SLANT_ROMAN;
fontDef.style = (slant == FC_SLANT_ITALIC)
? QFont::StyleItalic
: ((slant == FC_SLANT_OBLIQUE)
? QFont::StyleOblique
: QFont::StyleNormal);
FcBool scalable;
if (FcPatternGetBool(pattern, FC_SCALABLE, 0, &scalable) != FcResultMatch)
scalable = false;
if (scalable) {
fontDef.stretch = request.stretch;
fontDef.style = request.style;
} else {
int width;
if (FcPatternGetInteger(pattern, FC_WIDTH, 0, &width) == FcResultMatch)
fontDef.stretch = width;
else
fontDef.stretch = 100;
}
int spacing;
if (FcPatternGetInteger(pattern, FC_SPACING, 0, &spacing) == FcResultMatch) {
fontDef.fixedPitch = (spacing >= FC_MONO);
fontDef.ignorePitch = false;
} else {
fontDef.ignorePitch = true;
}
return fontDef;
}
static const char *specialLanguages[] = {
"en", // Common
"el", // Greek
"ru", // Cyrillic
"hy", // Armenian
"he", // Hebrew
"ar", // Arabic
"syr", // Syriac
"div", // Thaana
"hi", // Devanagari
"bn", // Bengali
"pa", // Gurmukhi
"gu", // Gujarati
"or", // Oriya
"ta", // Tamil
"te", // Telugu
"kn", // Kannada
"ml", // Malayalam
"si", // Sinhala
"th", // Thai
"lo", // Lao
"bo", // Tibetan
"my", // Myanmar
"ka", // Georgian
"ko", // Hangul
"", // Ogham
"", // Runic
"km", // Khmer
"" // N'Ko
};
enum { SpecialLanguageCount = sizeof(specialLanguages) / sizeof(const char *) };
static const ushort specialChars[] = {
0, // English
0, // Greek
0, // Cyrillic
0, // Armenian
0, // Hebrew
0, // Arabic
0, // Syriac
0, // Thaana
0, // Devanagari
0, // Bengali
0, // Gurmukhi
0, // Gujarati
0, // Oriya
0, // Tamil
0xc15, // Telugu
0xc95, // Kannada
0xd15, // Malayalam
0xd9a, // Sinhala
0, // Thai
0, // Lao
0, // Tibetan
0x1000, // Myanmar
0, // Georgian
0, // Hangul
0x1681, // Ogham
0x16a0, // Runic
0, // Khmer
0x7ca // N'Ko
};
enum { SpecialCharCount = sizeof(specialChars) / sizeof(ushort) };
// this could become a list of all languages used for each writing
// system, instead of using the single most common language.
static const char *languageForWritingSystem[] = {
0, // Any
"en", // Latin
"el", // Greek
"ru", // Cyrillic
"hy", // Armenian
"he", // Hebrew
"ar", // Arabic
"syr", // Syriac
"div", // Thaana
"hi", // Devanagari
"bn", // Bengali
"pa", // Gurmukhi
"gu", // Gujarati
"or", // Oriya
"ta", // Tamil
"te", // Telugu
"kn", // Kannada
"ml", // Malayalam
"si", // Sinhala
"th", // Thai
"lo", // Lao
"bo", // Tibetan
"my", // Myanmar
"ka", // Georgian
"km", // Khmer
"zh-cn", // SimplifiedChinese
"zh-tw", // TraditionalChinese
"ja", // Japanese
"ko", // Korean
"vi", // Vietnamese
0, // Symbol
0, // Ogham
0, // Runic
0 // N'Ko
};
enum { LanguageCount = sizeof(languageForWritingSystem) / sizeof(const char *) };
// Unfortunately FontConfig doesn't know about some languages. We have to test these through the
// charset. The lists below contain the systems where we need to do this.
static const ushort sampleCharForWritingSystem[] = {
0, // Any
0, // Latin
0, // Greek
0, // Cyrillic
0, // Armenian
0, // Hebrew
0, // Arabic
0, // Syriac
0, // Thaana
0, // Devanagari
0, // Bengali
0, // Gurmukhi
0, // Gujarati
0, // Oriya
0, // Tamil
0xc15, // Telugu
0xc95, // Kannada
0xd15, // Malayalam
0xd9a, // Sinhala
0, // Thai
0, // Lao
0, // Tibetan
0x1000, // Myanmar
0, // Georgian
0, // Khmer
0, // SimplifiedChinese
0, // TraditionalChinese
0, // Japanese
0, // Korean
0, // Vietnamese
0, // Symbol
0x1681, // Ogham
0x16a0, // Runic
0x7ca // N'Ko
};
enum { SampleCharCount = sizeof(sampleCharForWritingSystem) / sizeof(ushort) };
// Newer FontConfig let's us sort out fonts that contain certain glyphs, but no
// open type tables for is directly. Do this so we don't pick some strange
// pseudo unicode font
static const char *openType[] = {
0, // Any
0, // Latin
0, // Greek
0, // Cyrillic
0, // Armenian
0, // Hebrew
0, // Arabic
"syrc", // Syriac
"thaa", // Thaana
"deva", // Devanagari
"beng", // Bengali
"guru", // Gurmukhi
"gurj", // Gujarati
"orya", // Oriya
"taml", // Tamil
"telu", // Telugu
"knda", // Kannada
"mlym", // Malayalam
"sinh", // Sinhala
0, // Thai
0, // Lao
"tibt", // Tibetan
"mymr", // Myanmar
0, // Georgian
"khmr", // Khmer
0, // SimplifiedChinese
0, // TraditionalChinese
0, // Japanese
0, // Korean
0, // Vietnamese
0, // Symbol
0, // Ogham
0, // Runic
"nko " // N'Ko
};
enum { OpenTypeCount = sizeof(openType) / sizeof(const char *) };
static void loadFontConfig()
{
Q_ASSERT_X(qt_x11Data, "QFontDatabase",
"A QApplication object needs to be constructed before FontConfig is used.");
if (!qt_x11Data->has_fontconfig)
return;
Q_ASSERT_X(int(QUnicodeTables::ScriptCount) == SpecialLanguageCount,
"QFontDatabase", "New scripts have been added.");
Q_ASSERT_X(int(QUnicodeTables::ScriptCount) == SpecialCharCount,
"QFontDatabase", "New scripts have been added.");
Q_ASSERT_X(int(QFontDatabase::WritingSystemsCount) == LanguageCount,
"QFontDatabase", "New writing systems have been added.");
Q_ASSERT_X(int(QFontDatabase::WritingSystemsCount) == SampleCharCount,
"QFontDatabase", "New writing systems have been added.");
Q_ASSERT_X(int(QFontDatabase::WritingSystemsCount) == OpenTypeCount,
"QFontDatabase", "New writing systems have been added.");
QFontDatabasePrivate *db = privateDb();
FcFontSet *fonts;
FcPattern *pattern = FcPatternCreate();
FcDefaultSubstitute(pattern);
FcChar8 *lang = 0;
if (FcPatternGetString(pattern, FC_LANG, 0, &lang) == FcResultMatch)
db->systemLang = QString::fromUtf8((const char *) lang);
FcPatternDestroy(pattern);
QString familyName;
FcChar8 *value = 0;
int weight_value;
int slant_value;
int spacing_value;
FcChar8 *file_value;
int index_value;
FcChar8 *foundry_value;
FcChar8 *style_value;
FcBool scalable;
{
FcObjectSet *os = FcObjectSetCreate();
FcPattern *pattern = FcPatternCreate();
const char *properties [] = {
FC_FAMILY, FC_STYLE, FC_WEIGHT, FC_SLANT,
FC_SPACING, FC_FILE, FC_INDEX,
FC_LANG, FC_CHARSET, FC_FOUNDRY, FC_SCALABLE, FC_PIXEL_SIZE, FC_WEIGHT,
FC_WIDTH,
FC_CAPABILITY,
(const char *)0
};
const char **p = properties;
while (*p) {
FcObjectSetAdd(os, *p);
++p;
}
fonts = FcFontList(0, pattern, os);
FcObjectSetDestroy(os);
FcPatternDestroy(pattern);
}
for (int i = 0; i < fonts->nfont; i++) {
if (FcPatternGetString(fonts->fonts[i], FC_FAMILY, 0, &value) != FcResultMatch)
continue;
// capitalize(value);
familyName = QString::fromUtf8((const char *)value);
slant_value = FC_SLANT_ROMAN;
weight_value = FC_WEIGHT_MEDIUM;
spacing_value = FC_PROPORTIONAL;
file_value = 0;
index_value = 0;
scalable = FcTrue;
if (FcPatternGetInteger (fonts->fonts[i], FC_SLANT, 0, &slant_value) != FcResultMatch)
slant_value = FC_SLANT_ROMAN;
if (FcPatternGetInteger (fonts->fonts[i], FC_WEIGHT, 0, &weight_value) != FcResultMatch)
weight_value = FC_WEIGHT_MEDIUM;
if (FcPatternGetInteger (fonts->fonts[i], FC_SPACING, 0, &spacing_value) != FcResultMatch)
spacing_value = FC_PROPORTIONAL;
if (FcPatternGetString (fonts->fonts[i], FC_FILE, 0, &file_value) != FcResultMatch)
file_value = 0;
if (FcPatternGetInteger (fonts->fonts[i], FC_INDEX, 0, &index_value) != FcResultMatch)
index_value = 0;
if (FcPatternGetBool(fonts->fonts[i], FC_SCALABLE, 0, &scalable) != FcResultMatch)
scalable = FcTrue;
if (FcPatternGetString(fonts->fonts[i], FC_FOUNDRY, 0, &foundry_value) != FcResultMatch)
foundry_value = 0;
if (FcPatternGetString(fonts->fonts[i], FC_STYLE, 0, &style_value) != FcResultMatch)
style_value = 0;
QtFontFamily *family = db->family(familyName, true);
FcLangSet *langset = 0;
FcResult res = FcPatternGetLangSet(fonts->fonts[i], FC_LANG, 0, &langset);
if (res == FcResultMatch) {
for (int i = 1; i < LanguageCount; ++i) {
const FcChar8 *lang = (const FcChar8*) languageForWritingSystem[i];
if (!lang) {
family->writingSystems[i] |= QtFontFamily::UnsupportedFT;
} else {
FcLangResult langRes = FcLangSetHasLang(langset, lang);
if (langRes != FcLangDifferentLang)
family->writingSystems[i] = QtFontFamily::Supported;
else
family->writingSystems[i] |= QtFontFamily::UnsupportedFT;
}
}
family->writingSystems[QFontDatabase::Other] = QtFontFamily::UnsupportedFT;
family->ftWritingSystemCheck = true;
} else {
// we set Other to supported for symbol fonts. It makes no
// sense to merge these with other ones, as they are
// special in a way.
for (int i = 1; i < LanguageCount; ++i)
family->writingSystems[i] |= QtFontFamily::UnsupportedFT;
family->writingSystems[QFontDatabase::Other] = QtFontFamily::Supported;
}
FcCharSet *cs = 0;
res = FcPatternGetCharSet(fonts->fonts[i], FC_CHARSET, 0, &cs);
if (res == FcResultMatch) {
// some languages are not supported by FontConfig, we rather check the
// charset to detect these
for (int i = 1; i < SampleCharCount; ++i) {
if (!sampleCharForWritingSystem[i])
continue;
if (FcCharSetHasChar(cs, sampleCharForWritingSystem[i]))
family->writingSystems[i] = QtFontFamily::Supported;
}
}
for (int j = 1; j < LanguageCount; ++j) {
if (family->writingSystems[j] == QtFontFamily::Supported && requiresOpenType(j) && openType[j]) {
FcChar8 *cap;
res = FcPatternGetString (fonts->fonts[i], FC_CAPABILITY, 0, &cap);
if (res != FcResultMatch || !strstr((const char *)cap, openType[j]))
family->writingSystems[j] = QtFontFamily::UnsupportedFT;
}
}
QByteArray file((const char *)file_value);
family->fontFilename = file;
family->fontFileIndex = index_value;
QtFontStyle::Key styleKey;
QString styleName = style_value ? QString::fromUtf8((const char *) style_value) : QString();
styleKey.style = (slant_value == FC_SLANT_ITALIC)
? QFont::StyleItalic
: ((slant_value == FC_SLANT_OBLIQUE)
? QFont::StyleOblique
: QFont::StyleNormal);
styleKey.weight = getFCWeight(weight_value);
if (!scalable) {
int width = 100;
FcPatternGetInteger (fonts->fonts[i], FC_WIDTH, 0, &width);
styleKey.stretch = width;
}
QtFontFoundry *foundry
= family->foundry(foundry_value ? QString::fromUtf8((const char *)foundry_value) : QString(), true);
QtFontStyle *style = foundry->style(styleKey, styleName, true);
if (spacing_value < FC_MONO)
family->fixedPitch = false;
QtFontSize *size;
if (scalable) {
style->smoothScalable = true;
size = style->pixelSize(SMOOTH_SCALABLE, true);
} else {
double pixel_size = 0;
FcPatternGetDouble (fonts->fonts[i], FC_PIXEL_SIZE, 0, &pixel_size);
size = style->pixelSize((int)pixel_size, true);
}
QtFontEncoding *enc = size->encodingID(-1, 0, 0, 0, 0, true);
enc->pitch = (spacing_value >= FC_CHARCELL ? 'c' :
(spacing_value >= FC_MONO ? 'm' : 'p'));
}
FcFontSetDestroy (fonts);
struct FcDefaultFont {
const char *qtname;
bool fixed;
};
const FcDefaultFont defaults[] = {
{ "Serif", false },
{ "Sans Serif", false },
{ "Monospace", true },
{ 0, false }
};
const FcDefaultFont *f = defaults;
while (f->qtname) {
QtFontFamily *family = db->family(QLatin1String(f->qtname), true);
family->fixedPitch = f->fixed;
family->synthetic = true;
QtFontFoundry *foundry = family->foundry(QString(), true);
// aliases only make sense for 'common', not for any of the specials
for (int i = 1; i < LanguageCount; ++i) {
if (requiresOpenType(i))
family->writingSystems[i] = QtFontFamily::UnsupportedFT;
else
family->writingSystems[i] = QtFontFamily::Supported;
}
family->writingSystems[QFontDatabase::Other] = QtFontFamily::UnsupportedFT;
QtFontStyle::Key styleKey;
for (int i = 0; i < 4; ++i) {
styleKey.style = (i%2) ? QFont::StyleNormal : QFont::StyleItalic;
styleKey.weight = (i > 1) ? QFont::Bold : QFont::Normal;
QtFontStyle *style = foundry->style(styleKey, QString(), true);
style->smoothScalable = true;
QtFontSize *size = style->pixelSize(SMOOTH_SCALABLE, true);
QtFontEncoding *enc = size->encodingID(-1, 0, 0, 0, 0, true);
enc->pitch = (f->fixed ? 'm' : 'p');
}
++f;
}
}
#endif // QT_NO_FONTCONFIG
static void checkSymbolFont(QtFontFamily *family)
{
#ifndef QT_NO_FONTCONFIG
if (!family || family->symbol_checked || family->fontFilename.isEmpty())
return;
family->symbol_checked = true;
QFontEngine::FaceId id;
id.filename = family->fontFilename;
id.index = family->fontFileIndex;
QFreetypeFace *f = QFreetypeFace::getFace(id);
if (!f) {
qWarning("checkSymbolFonts: Couldn't open face %s (%s/%d)",
qPrintable(family->name), family->fontFilename.data(), family->fontFileIndex);
return;
}
for (int i = 0; i < f->face->num_charmaps; ++i) {
FT_CharMap cm = f->face->charmaps[i];
if (cm->encoding == FT_ENCODING_ADOBE_CUSTOM
|| cm->encoding == FT_ENCODING_MS_SYMBOL) {
for (int x = QFontDatabase::Latin; x < QFontDatabase::Other; ++x)
family->writingSystems[x] = QtFontFamily::Unsupported;
family->writingSystems[QFontDatabase::Other] = QtFontFamily::Supported;
break;
}
}
f->release(id);
#else
Q_UNUSED(family);
#endif
}
static void checkSymbolFonts(const QString &family = QString())
{
#ifndef QT_NO_FONTCONFIG
QFontDatabasePrivate *d = privateDb();
if (family.isEmpty()) {
for (int i = 0; i < d->count; ++i)
checkSymbolFont(d->families[i]);
} else {
checkSymbolFont(d->family(family));
}
#else
Q_UNUSED(family);
#endif
}
static void registerFont(QFontDatabasePrivate::ApplicationFont *fnt);
static void initializeFontDb()
{
QFontDatabasePrivate *db = privateDb();
if (!db || db->count)
return;
QElapsedTimer t;
t.start();
#ifndef QT_NO_FONTCONFIG
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]);
}
}
loadFontConfig();
FD_DEBUG("QFontDatabase: loaded FontConfig: %d ms", int(t.elapsed()));
#endif
t.start();
#ifndef QT_NO_FONTCONFIG
for (int i = 0; i < db->count; i++) {
for (int j = 0; j < db->families[i]->count; ++j) { // each foundry
QtFontFoundry *foundry = db->families[i]->foundries[j];
for (int k = 0; k < foundry->count; ++k) {
QtFontStyle *style = foundry->styles[k];
if (style->key.style != QFont::StyleNormal) continue;
QtFontSize *size = style->pixelSize(SMOOTH_SCALABLE);
if (! size) continue; // should not happen
QtFontEncoding *enc = size->encodingID(-1, 0, 0, 0, 0, true);
if (! enc) continue; // should not happen either
QtFontStyle::Key key = style->key;
// does this style have an italic equivalent?
key.style = QFont::StyleItalic;
QtFontStyle *equiv = foundry->style(key);
if (equiv) continue;
// does this style have an oblique equivalent?
key.style = QFont::StyleOblique;
equiv = foundry->style(key);
if (equiv) continue;
// let's fake one...
equiv = foundry->style(key, QString(), true);
equiv->styleName = styleStringHelper(key.weight, QFont::Style(key.style));
equiv->smoothScalable = true;
QtFontSize *equiv_size = equiv->pixelSize(SMOOTH_SCALABLE, true);
QtFontEncoding *equiv_enc = equiv_size->encodingID(-1, 0, 0, 0, 0, true);
// keep the same pitch
equiv_enc->pitch = enc->pitch;
}
}
}
#endif
#ifdef QFONTDATABASE_DEBUG
// print the database
for (int f = 0; f < db->count; f++) {
QtFontFamily *family = db->families[f];
FD_DEBUG("'%s' %s fixed=%s", family->name.latin1(), (family->fixedPitch ? "fixed" : ""),
(family->fixedPitch ? "yes" : "no"));
for (int i = 0; i < QFontDatabase::WritingSystemsCount; ++i) {
QFontDatabase::WritingSystem ws = QFontDatabase::WritingSystem(i);
FD_DEBUG("\t%s: %s", QFontDatabase::writingSystemName(ws).toLatin1().constData(),
((family->writingSystems[i] & QtFontFamily::Supported) ? "Supported" :
(family->writingSystems[i] & QtFontFamily::Unsupported) == QtFontFamily::Unsupported ?
"Unsupported" : "Unknown"));
}
for (int fd = 0; fd < family->count; fd++) {
QtFontFoundry *foundry = family->foundries[fd];
FD_DEBUG("\t\t'%s'", foundry->name.latin1());
for (int s = 0; s < foundry->count; s++) {
QtFontStyle *style = foundry->styles[s];
FD_DEBUG("\t\t\tstyle: style=%d weight=%d (%s)\n"
"\t\t\tstretch=%d (%s)",
style->key.style, style->key.weight,
style->weightName, style->key.stretch,
style->setwidthName ? style->setwidthName : "nil");
if (style->smoothScalable)
FD_DEBUG("\t\t\t\tsmooth scalable");
else if (style->bitmapScalable)
FD_DEBUG("\t\t\t\tbitmap scalable");
if (style->pixelSizes) {
qDebug("\t\t\t\t%d pixel sizes", style->count);
for (int z = 0; z < style->count; ++z) {
QtFontSize *size = style->pixelSizes + z;
for (int e = 0; e < size->count; ++e) {
FD_DEBUG("\t\t\t\t size %5d pitch %c encoding %s",
size->pixelSize,
size->encodings[e].pitch,
xlfd_for_id(size->encodings[e].encoding));
}
}
}
}
}
}
#endif // QFONTDATABASE_DEBUG
}
// --------------------------------------------------------------------------------------
// font loader
// --------------------------------------------------------------------------------------
static const char *styleHint(const QFontDef &request)
{
const char *stylehint = 0;
switch (request.styleHint) {
case QFont::SansSerif:
stylehint = "sans-serif";
break;
case QFont::Serif:
stylehint = "serif";
break;
case QFont::TypeWriter:
stylehint = "monospace";
break;
default:
if (request.fixedPitch)
stylehint = "monospace";
break;
}
return stylehint;
}
#ifndef QT_NO_FONTCONFIG
void qt_addPatternProps(FcPattern *pattern, int screen, int script, const QFontDef &request)
{
double size_value = qMax(qreal(1.), request.pixelSize);
FcPatternDel(pattern, FC_PIXEL_SIZE);
FcPatternAddDouble(pattern, FC_PIXEL_SIZE, size_value);
if (qt_x11Data->display && QX11Info::appDepth(screen) <= 8) {
FcPatternDel(pattern, FC_ANTIALIAS);
// can't do antialiasing on 8bpp
FcPatternAddBool(pattern, FC_ANTIALIAS, false);
} else if (request.styleStrategy & (QFont::PreferAntialias|QFont::NoAntialias)) {
FcPatternDel(pattern, FC_ANTIALIAS);
FcPatternAddBool(pattern, FC_ANTIALIAS,
!(request.styleStrategy & QFont::NoAntialias));
}
if (script != QUnicodeTables::Common && *specialLanguages[script] != '\0') {
Q_ASSERT(script < QUnicodeTables::ScriptCount);
FcLangSet *ls = FcLangSetCreate();
FcLangSetAdd(ls, (const FcChar8*)specialLanguages[script]);
FcPatternDel(pattern, FC_LANG);
FcPatternAddLangSet(pattern, FC_LANG, ls);
FcLangSetDestroy(ls);
}
if (!request.styleName.isEmpty()) {
QByteArray cs = request.styleName.toUtf8();
FcPatternAddString(pattern, FC_STYLE, (const FcChar8 *) cs.constData());
return;
}
int weight_value = FC_WEIGHT_BLACK;
if (request.weight == 0)
weight_value = FC_WEIGHT_MEDIUM;
else if (request.weight < (QFont::Light + QFont::Normal) / 2)
weight_value = FC_WEIGHT_LIGHT;
else if (request.weight < (QFont::Normal + QFont::DemiBold) / 2)
weight_value = FC_WEIGHT_MEDIUM;
else if (request.weight < (QFont::DemiBold + QFont::Bold) / 2)
weight_value = FC_WEIGHT_DEMIBOLD;
else if (request.weight < (QFont::Bold + QFont::Black) / 2)
weight_value = FC_WEIGHT_BOLD;
FcPatternDel(pattern, FC_WEIGHT);
FcPatternAddInteger(pattern, FC_WEIGHT, weight_value);
int slant_value = FC_SLANT_ROMAN;
if (request.style == QFont::StyleItalic)
slant_value = FC_SLANT_ITALIC;
else if (request.style == QFont::StyleOblique)
slant_value = FC_SLANT_OBLIQUE;
FcPatternDel(pattern, FC_SLANT);
FcPatternAddInteger(pattern, FC_SLANT, slant_value);
int stretch = request.stretch;
if (!stretch)
stretch = 100;
FcPatternDel(pattern, FC_WIDTH);
FcPatternAddInteger(pattern, FC_WIDTH, stretch);
}
static bool preferScalable(const QFontDef &request)
{
return request.styleStrategy & (QFont::PreferOutline|QFont::ForceOutline|QFont::PreferQuality|QFont::PreferAntialias);
}
static FcPattern *getFcPattern(const QFontPrivate *fp, int script, const QFontDef &request)
{
if (!qt_x11Data->has_fontconfig)
return 0;
FcPattern *pattern = FcPatternCreate();
if (!pattern)
return 0;
FcValue value;
value.type = FcTypeString;
QtFontDesc desc;
QStringList families_and_foundries = familyList(request);
for (int i = 0; i < families_and_foundries.size(); ++i) {
QString family, foundry;
parseFontName(families_and_foundries.at(i), foundry, family);
if (!family.isEmpty()) {
QByteArray cs = family.toUtf8();
value.u.s = (const FcChar8 *)cs.data();
FcPatternAdd(pattern, FC_FAMILY, value, FcTrue);
}
if (i == 0) {
QT_PREPEND_NAMESPACE(match)(script, request, family, foundry, -1, &desc);
if (!foundry.isEmpty()) {
QByteArray cs = foundry.toUtf8();
value.u.s = (const FcChar8 *)cs.data();
FcPatternAddWeak(pattern, FC_FOUNDRY, value, FcTrue);
}
}
}
const char *stylehint = styleHint(request);
if (stylehint) {
value.u.s = (const FcChar8 *)stylehint;
FcPatternAddWeak(pattern, FC_FAMILY, value, FcTrue);
}
if (!request.ignorePitch) {
char pitch_value = FC_PROPORTIONAL;
if (request.fixedPitch || (desc.family && desc.family->fixedPitch))
pitch_value = FC_MONO;
FcPatternAddInteger(pattern, FC_SPACING, pitch_value);
}
FcPatternAddBool(pattern, FC_OUTLINE, !(request.styleStrategy & QFont::PreferBitmap));
if (preferScalable(request) || (desc.style && desc.style->smoothScalable))
FcPatternAddBool(pattern, FC_SCALABLE, true);
qt_addPatternProps(pattern, fp->screen, script, request);
FcConfigSubstitute(0, pattern, FcMatchPattern);
FcDefaultSubstitute(pattern);
// these should only get added to the pattern _after_ substitution
// append the default fallback font for the specified script
extern QString qt_fallback_font_family(int);
QString fallback = qt_fallback_font_family(script);
if (!fallback.isEmpty()) {
QByteArray cs = fallback.toUtf8();
value.u.s = (const FcChar8 *)cs.data();
FcPatternAddWeak(pattern, FC_FAMILY, value, FcTrue);
}
// add the default family
QString defaultFamily = QApplication::font().family();
QByteArray cs = defaultFamily.toUtf8();
value.u.s = (const FcChar8 *)cs.data();
FcPatternAddWeak(pattern, FC_FAMILY, value, FcTrue);
// add QFont::defaultFamily() to the list, for compatibility with
// previous versions
defaultFamily = QApplication::font().defaultFamily();
cs = defaultFamily.toUtf8();
value.u.s = (const FcChar8 *)cs.data();
FcPatternAddWeak(pattern, FC_FAMILY, value, FcTrue);
return pattern;
}
static void FcFontSetRemove(FcFontSet *fs, int at)
{
Q_ASSERT(at < fs->nfont);
FcPatternDestroy(fs->fonts[at]);
int len = (--fs->nfont - at) * sizeof(FcPattern *);;
if (len > 0)
memmove(fs->fonts + at, fs->fonts + at + 1, len);
}
static QFontEngine *tryPatternLoad(FcPattern *match, int screen,
const QFontDef &request, int script)
{
#ifdef FONT_MATCH_DEBUG
FcChar8 *fam;
FcPatternGetString(match, FC_FAMILY, 0, &fam);
FM_DEBUG("==== trying %s\n", fam);
#endif
FM_DEBUG("passes charset test\n");
QFontEngineX11FT *engine = 0;
if (!match) // probably no fonts available.
goto done;
if (script != QUnicodeTables::Common) {
// skip font if it doesn't support the language we want
if (specialChars[script]) {
// need to check the charset, as the langset doesn't work for these scripts
FcCharSet *cs;
if (FcPatternGetCharSet(match, FC_CHARSET, 0, &cs) != FcResultMatch)
goto done;
if (!FcCharSetHasChar(cs, specialChars[script]))
goto done;
} else if (*specialLanguages[script] != '\0'){
FcLangSet *langSet = 0;
if (FcPatternGetLangSet(match, FC_LANG, 0, &langSet) != FcResultMatch)
goto done;
if (FcLangSetHasLang(langSet, (const FcChar8*)specialLanguages[script]) != FcLangEqual)
goto done;
}
}
// enforce non-antialiasing if requested. the ft font engine looks at this property.
if (request.styleStrategy & QFont::NoAntialias) {
FcPatternDel(match, FC_ANTIALIAS);
FcPatternAddBool(match, FC_ANTIALIAS, false);
}
engine = new QFontEngineX11FT(match, qt_FcPatternToQFontDef(match, request), screen);
if (engine->invalid()) {
FM_DEBUG(" --> invalid!\n");
delete engine;
engine = 0;
} else if (scriptRequiresOpenType(script)) {
HB_Face hbFace = engine->harfbuzzFace();
if (!hbFace || !hbFace->supported_scripts[script]) {
FM_DEBUG(" OpenType support missing for script\n");
delete engine;
engine = 0;
}
}
done:
return engine;
}
FcFontSet *qt_fontSetForPattern(FcPattern *pattern, const QFontDef &request)
{
FcResult result;
FcFontSet *fs = FcFontSort(0, pattern, FcTrue, 0, &result);
#ifdef FONT_MATCH_DEBUG
FM_DEBUG("first font in fontset:\n");
FcPatternPrint(fs->fonts[0]);
#endif
FcBool forceScalable = request.styleStrategy & QFont::ForceOutline;
// remove fonts if they are not scalable (and should be)
if (forceScalable && fs) {
for (int i = 0; i < fs->nfont; ++i) {
FcPattern *font = fs->fonts[i];
FcResult res;
FcBool scalable;
res = FcPatternGetBool(font, FC_SCALABLE, 0, &scalable);
if (res != FcResultMatch || !scalable) {
FcFontSetRemove(fs, i);
#ifdef FONT_MATCH_DEBUG
FM_DEBUG("removing pattern:");
FcPatternPrint(font);
#endif
--i; // go back one
}
}
}
FM_DEBUG("final pattern contains %d fonts\n", fs->nfont);
return fs;
}
static QFontEngine *loadFc(const QFontPrivate *fp, int script, const QFontDef &request)
{
FM_DEBUG("===================== loadFc: script=%d family='%s'\n", script, request.family.toLatin1().data());
FcPattern *pattern = getFcPattern(fp, script, request);
#ifdef FONT_MATCH_DEBUG
FM_DEBUG("\n\nfinal FcPattern contains:\n");
FcPatternPrint(pattern);
#endif
QFontEngine *fe = 0;
FcResult res;
FcPattern *match = FcFontMatch(0, pattern, &res);
fe = tryPatternLoad(match, fp->screen, request, script);
if (!fe) {
FcFontSet *fs = qt_fontSetForPattern(pattern, request);
if (match) {
FcPatternDestroy(match);
match = 0;
}
if (fs) {
for (int i = 0; !fe && i < fs->nfont; ++i) {
match = FcFontRenderPrepare(NULL, pattern, fs->fonts[i]);
fe = tryPatternLoad(match, fp->screen, request, script);
if (fe)
break;
FcPatternDestroy(match);
match = 0;
}
FcFontSetDestroy(fs);
}
FM_DEBUG("engine for script %d is %s\n", script, fe ? fe->fontDef.family.toLatin1().data(): "(null)");
}
if (fe
&& script == QUnicodeTables::Common
&& !(request.styleStrategy & QFont::NoFontMerging) && !fe->symbol) {
fe = new QFontEngineMultiFT(fe, match, pattern, fp->screen, request);
} else {
FcPatternDestroy(pattern);
}
if (match)
FcPatternDestroy(match);
return fe;
}
static FcPattern *queryFont(const FcChar8 *file, const QByteArray &data, int id, FcBlanks *blanks, int *count)
{
if (data.isEmpty())
return FcFreeTypeQuery(file, id, blanks, count);
extern FT_Library qt_getFreetype();
FT_Library lib = qt_getFreetype();
FcPattern *pattern = 0;
FT_Face face;
if (!FT_New_Memory_Face(lib, (const FT_Byte *)data.constData(), data.size(), id, &face)) {
*count = face->num_faces;
pattern = FcFreeTypeQueryFace(face, file, id, blanks);
FT_Done_Face(face);
}
return pattern;
}
#endif // QT_NO_FONTCONFIG
/*! \internal
Loads a QFontEngine for the specified \a script that matches the
QFontDef \e request member variable.
*/
void QFontDatabase::load(const QFontPrivate *d, int script)
{
Q_ASSERT(script >= 0 && script < QUnicodeTables::ScriptCount);
// normalize the request to get better caching
QFontDef req = d->request;
if (req.pixelSize <= 0)
req.pixelSize = qFloor(qt_pixelSize(req.pointSize, d->dpi) * 100.0 + 0.5) * 0.01;
if (req.pixelSize < 1)
req.pixelSize = 1;
if (req.weight == 0)
req.weight = QFont::Normal;
if (req.stretch == 0)
req.stretch = 100;
QFontCache::Key key(req, script, d->screen);
if (!d->engineData)
getEngineData(d, key);
// the cached engineData could have already loaded the engine we want
if (d->engineData->engines[script])
return;
// set it to the actual pointsize, so QFontInfo will do the right thing
if (req.pointSize < 0)
req.pointSize = qt_pointSize(req.pixelSize, d->dpi);
QFontEngine *fe = QFontCache::instance()->findEngine(key);
if (!fe) {
QMutexLocker locker(fontDatabaseMutex());
if (!privateDb()->count)
initializeFontDb();
#ifdef QT_BUILD_INTERNAL
if (qt_enable_test_font && req.family == QLatin1String("__Qt__Box__Engine__")) {
fe = new QTestFontEngine(req.pixelSize);
fe->fontDef = req;
} else
#endif
#ifndef QT_NO_FONTCONFIG
if (qt_x11Data->has_fontconfig) {
fe = loadFc(d, script, req);
#endif
}
if (!fe) {
fe = new QFontEngineBox(req.pixelSize);
fe->fontDef = QFontDef();
}
}
if (fe->symbol || (d->request.styleStrategy & QFont::NoFontMerging)) {
for (int i = 0; i < QUnicodeTables::ScriptCount; ++i) {
if (!d->engineData->engines[i]) {
d->engineData->engines[i] = fe;
fe->ref.ref();
}
}
} else {
d->engineData->engines[script] = fe;
fe->ref.ref();
}
QFontCache::instance()->insertEngine(key, fe);
}
// Needed for fontconfig version < 2.2.97
#ifndef FC_FAMILYLANG
#define FC_FAMILYLANG "familylang"
#endif
static void registerFont(QFontDatabasePrivate::ApplicationFont *fnt)
{
#if defined(QT_NO_FONTCONFIG)
return;
#else
if (!qt_x11Data->has_fontconfig)
return;
FcConfig *config = FcConfigGetCurrent();
if (!config)
return;
FcFontSet *set = FcConfigGetFonts(config, FcSetApplication);
if (!set) {
FcConfigAppFontAddFile(config, (const FcChar8 *)":/non-existent");
set = FcConfigGetFonts(config, FcSetApplication); // try again
if (!set)
return;
}
QString fileNameForQuery = fnt->fileName;
int id = 0;
FcBlanks *blanks = FcConfigGetBlanks(0);
int count = 0;
QStringList families;
QFontDatabasePrivate *db = privateDb();
FcPattern *pattern = Q_NULLPTR;
do {
pattern = queryFont((const FcChar8 *)QFile::encodeName(fileNameForQuery).constData(),
fnt->data, id, blanks, &count);
if (!pattern)
return;
FcPatternDel(pattern, FC_FILE);
QByteArray cs = fnt->fileName.toUtf8();
FcPatternAddString(pattern, FC_FILE, (const FcChar8 *) cs.constData());
FcChar8 *fam = 0, *familylang = 0;
int i, n = 0;
for (i = 0; ; i++) {
if (FcPatternGetString(pattern, FC_FAMILYLANG, i, &familylang) != FcResultMatch)
break;
QString familyLang = QString::fromUtf8((const char *) familylang);
if (familyLang.compare(db->systemLang, Qt::CaseInsensitive) == 0) {
n = i;
break;
}
}
if (FcPatternGetString(pattern, FC_FAMILY, n, &fam) == FcResultMatch) {
QString family = QString::fromUtf8(reinterpret_cast<const char *>(fam));
families << family;
}
if (!FcFontSetAdd(set, pattern))
return;
++id;
} while (pattern && id < count);
fnt->families = families;
#endif
}
bool QFontDatabase::removeApplicationFont(int handle)
{
#if defined(QT_NO_FONTCONFIG)
return false;
#else
QMutexLocker locker(fontDatabaseMutex());
QFontDatabasePrivate *db = privateDb();
if (handle < 0 || handle >= db->applicationFonts.count())
return false;
FcConfigAppFontClear(0);
db->applicationFonts[handle] = QFontDatabasePrivate::ApplicationFont();
db->reregisterAppFonts = true;
db->invalidate();
return true;
#endif
}
bool QFontDatabase::removeAllApplicationFonts()
{
#if defined(QT_NO_FONTCONFIG)
return false;
#else
QMutexLocker locker(fontDatabaseMutex());
QFontDatabasePrivate *db = privateDb();
if (db->applicationFonts.isEmpty())
return false;
FcConfigAppFontClear(0);
db->applicationFonts.clear();
db->invalidate();
return true;
#endif
}
bool QFontDatabase::supportsThreadedFontRendering()
{
#if defined(QT_NO_FONTCONFIG)
return false;
#else
return qt_x11Data->has_fontconfig;
#endif
}
QString QFontDatabase::resolveFontFamilyAlias(const QString &family)
{
#if defined(QT_NO_FONTCONFIG)
return family;
#else
FcPattern *pattern = FcPatternCreate();
if (!pattern)
return family;
QByteArray cs = family.toUtf8();
FcPatternAddString(pattern, FC_FAMILY, (const FcChar8 *) cs.constData());
FcConfigSubstitute(0, pattern, FcMatchPattern);
FcDefaultSubstitute(pattern);
FcChar8 *familyAfterSubstitution;
FcPatternGetString(pattern, FC_FAMILY, 0, &familyAfterSubstitution);
QString resolved = QString::fromUtf8((const char *) familyAfterSubstitution);
FcPatternDestroy(pattern);
return resolved;
#endif
}
QT_END_NAMESPACE
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