| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtGui module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
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| ** accordance with the commercial license agreement provided with the |
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| ** GNU Lesser General Public License Usage |
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| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
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| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
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| ** included in the packaging of this file. Please review the following |
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| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qfontdatabase.h" |
| #include "qloggingcategory.h" |
| #include "qalgorithms.h" |
| #include "qguiapplication.h" |
| #include "qvarlengtharray.h" // here or earlier - workaround for VC++6 |
| #include "qthread.h" |
| #include "qmutex.h" |
| #include "qfile.h" |
| #include "qfileinfo.h" |
| #include "qfontengine_p.h" |
| #include <qpa/qplatformintegration.h> |
| |
| #include <QtGui/private/qguiapplication_p.h> |
| #include <qpa/qplatformfontdatabase.h> |
| #include <qpa/qplatformtheme.h> |
| |
| #include <QtCore/qcache.h> |
| #include <QtCore/qmath.h> |
| |
| #include <stdlib.h> |
| #include <algorithm> |
| |
| #include <qtgui_tracepoints_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| Q_LOGGING_CATEGORY(lcFontDb, "qt.text.font.db") |
| Q_LOGGING_CATEGORY(lcFontMatch, "qt.text.font.match") |
| |
| #define SMOOTH_SCALABLE 0xffff |
| |
| #if defined(QT_BUILD_INTERNAL) |
| bool qt_enable_test_font = false; |
| |
| Q_AUTOTEST_EXPORT void qt_setQtEnableTestFont(bool value) |
| { |
| qt_enable_test_font = value; |
| } |
| #endif |
| |
| static int getFontWeight(const QString &weightString) |
| { |
| QString s = weightString.toLower(); |
| |
| // Order here is important. We want to match the common cases first, but we |
| // must also take care to acknowledge the cost of our tests. |
| // |
| // As a result, we test in two orders; the order of commonness, and the |
| // order of "expense". |
| // |
| // A simple string test is the cheapest, so let's do that first. |
| // Test in decreasing order of commonness |
| if (s == QLatin1String("normal") || s == QLatin1String("regular")) |
| return QFont::Normal; |
| if (s == QLatin1String("bold")) |
| return QFont::Bold; |
| if (s == QLatin1String("semibold") || s == QLatin1String("semi bold") |
| || s == QLatin1String("demibold") || s == QLatin1String("demi bold")) |
| return QFont::DemiBold; |
| if (s == QLatin1String("medium")) |
| return QFont::Medium; |
| if (s == QLatin1String("black")) |
| return QFont::Black; |
| if (s == QLatin1String("light")) |
| return QFont::Light; |
| if (s == QLatin1String("thin")) |
| return QFont::Thin; |
| const QStringRef s2 = s.midRef(2); |
| if (s.startsWith(QLatin1String("ex")) || s.startsWith(QLatin1String("ul"))) { |
| if (s2 == QLatin1String("tralight") || s == QLatin1String("tra light")) |
| return QFont::ExtraLight; |
| if (s2 == QLatin1String("trabold") || s2 == QLatin1String("tra bold")) |
| return QFont::ExtraBold; |
| } |
| |
| // Next up, let's see if contains() matches: slightly more expensive, but |
| // still fast enough. |
| if (s.contains(QLatin1String("bold"))) { |
| if (s.contains(QLatin1String("demi"))) |
| return QFont::DemiBold; |
| return QFont::Bold; |
| } |
| if (s.contains(QLatin1String("thin"))) |
| return QFont::Thin; |
| if (s.contains(QLatin1String("light"))) |
| return QFont::Light; |
| if (s.contains(QLatin1String("black"))) |
| return QFont::Black; |
| |
| // Now, we perform string translations & comparisons with those. |
| // These are (very) slow compared to simple string ops, so we do these last. |
| // As using translated values for such things is not very common, this should |
| // not be too bad. |
| if (s.compare(QCoreApplication::translate("QFontDatabase", "Normal", "The Normal or Regular font weight"), Qt::CaseInsensitive) == 0) |
| return QFont::Normal; |
| const QString translatedBold = QCoreApplication::translate("QFontDatabase", "Bold").toLower(); |
| if (s == translatedBold) |
| return QFont::Bold; |
| if (s.compare(QCoreApplication::translate("QFontDatabase", "Demi Bold"), Qt::CaseInsensitive) == 0) |
| return QFont::DemiBold; |
| if (s.compare(QCoreApplication::translate("QFontDatabase", "Medium", "The Medium font weight"), Qt::CaseInsensitive) == 0) |
| return QFont::Medium; |
| if (s.compare(QCoreApplication::translate("QFontDatabase", "Black"), Qt::CaseInsensitive) == 0) |
| return QFont::Black; |
| const QString translatedLight = QCoreApplication::translate("QFontDatabase", "Light").toLower(); |
| if (s == translatedLight) |
| return QFont::Light; |
| if (s.compare(QCoreApplication::translate("QFontDatabase", "Thin"), Qt::CaseInsensitive) == 0) |
| return QFont::Thin; |
| if (s.compare(QCoreApplication::translate("QFontDatabase", "Extra Light"), Qt::CaseInsensitive) == 0) |
| return QFont::ExtraLight; |
| if (s.compare(QCoreApplication::translate("QFontDatabase", "Extra Bold"), Qt::CaseInsensitive) == 0) |
| return QFont::ExtraBold; |
| |
| // And now the contains() checks for the translated strings. |
| //: The word for "Extra" as in "Extra Bold, Extra Thin" used as a pattern for string searches |
| const QString translatedExtra = QCoreApplication::translate("QFontDatabase", "Extra").toLower(); |
| if (s.contains(translatedBold)) { |
| //: The word for "Demi" as in "Demi Bold" used as a pattern for string searches |
| QString translatedDemi = QCoreApplication::translate("QFontDatabase", "Demi").toLower(); |
| if (s .contains(translatedDemi)) |
| return QFont::DemiBold; |
| if (s.contains(translatedExtra)) |
| return QFont::ExtraBold; |
| return QFont::Bold; |
| } |
| |
| if (s.contains(translatedLight)) { |
| if (s.contains(translatedExtra)) |
| return QFont::ExtraLight; |
| return QFont::Light; |
| } |
| return QFont::Normal; |
| } |
| |
| |
| struct QtFontSize |
| { |
| |
| void *handle; |
| |
| unsigned short pixelSize : 16; |
| }; |
| |
| |
| |
| struct QtFontStyle |
| { |
| struct Key { |
| Key(const QString &styleString); |
| Key() : style(QFont::StyleNormal), |
| weight(QFont::Normal), stretch(0) { } |
| Key(const Key &o) : style(o.style), weight(o.weight), stretch(o.stretch) { } |
| uint style : 2; |
| signed int weight : 8; |
| signed int stretch : 12; |
| |
| bool operator==(const Key & other) { |
| return (style == other.style && weight == other.weight && |
| (stretch == 0 || other.stretch == 0 || stretch == other.stretch)); |
| } |
| bool operator!=(const Key &other) { |
| return !operator==(other); |
| } |
| bool operator <(const Key &o) { |
| int x = (style << 12) + (weight << 14) + stretch; |
| int y = (o.style << 12) + (o.weight << 14) + o.stretch; |
| return (x < y); |
| } |
| }; |
| |
| QtFontStyle(const Key &k) |
| : key(k), bitmapScalable(false), smoothScalable(false), |
| count(0), pixelSizes(nullptr) |
| { |
| } |
| |
| ~QtFontStyle() { |
| while (count) { |
| // bitfield count-- in while condition does not work correctly in mwccsym2 |
| count--; |
| QPlatformIntegration *integration = QGuiApplicationPrivate::platformIntegration(); |
| if (integration) { |
| integration->fontDatabase()->releaseHandle(pixelSizes[count].handle); |
| } |
| } |
| free(pixelSizes); |
| } |
| |
| Key key; |
| bool bitmapScalable : 1; |
| bool smoothScalable : 1; |
| signed int count : 30; |
| QtFontSize *pixelSizes; |
| QString styleName; |
| |
| bool antialiased; |
| |
| QtFontSize *pixelSize(unsigned short size, bool = false); |
| }; |
| |
| QtFontStyle::Key::Key(const QString &styleString) |
| : style(QFont::StyleNormal), weight(QFont::Normal), stretch(0) |
| { |
| weight = getFontWeight(styleString); |
| |
| if (!styleString.isEmpty()) { |
| // First the straightforward no-translation checks, these are fast. |
| if (styleString.contains(QLatin1String("Italic"))) |
| style = QFont::StyleItalic; |
| else if (styleString.contains(QLatin1String("Oblique"))) |
| style = QFont::StyleOblique; |
| |
| // Then the translation checks. These aren't as fast. |
| else if (styleString.contains(QCoreApplication::translate("QFontDatabase", "Italic"))) |
| style = QFont::StyleItalic; |
| else if (styleString.contains(QCoreApplication::translate("QFontDatabase", "Oblique"))) |
| style = QFont::StyleOblique; |
| } |
| } |
| |
| QtFontSize *QtFontStyle::pixelSize(unsigned short size, bool add) |
| { |
| for (int i = 0; i < count; i++) { |
| if (pixelSizes[i].pixelSize == size) |
| return pixelSizes + i; |
| } |
| if (!add) |
| return nullptr; |
| |
| if (!pixelSizes) { |
| // Most style have only one font size, we avoid waisting memory |
| QtFontSize *newPixelSizes = (QtFontSize *)malloc(sizeof(QtFontSize)); |
| Q_CHECK_PTR(newPixelSizes); |
| pixelSizes = newPixelSizes; |
| } else if (!(count % 8) || count == 1) { |
| QtFontSize *newPixelSizes = (QtFontSize *) |
| realloc(pixelSizes, |
| (((count+8) >> 3) << 3) * sizeof(QtFontSize)); |
| Q_CHECK_PTR(newPixelSizes); |
| pixelSizes = newPixelSizes; |
| } |
| pixelSizes[count].pixelSize = size; |
| pixelSizes[count].handle = nullptr; |
| return pixelSizes + (count++); |
| } |
| |
| struct QtFontFoundry |
| { |
| QtFontFoundry(const QString &n) : name(n), count(0), styles(nullptr) {} |
| ~QtFontFoundry() { |
| while (count--) |
| delete styles[count]; |
| free(styles); |
| } |
| |
| QString name; |
| |
| int count; |
| QtFontStyle **styles; |
| QtFontStyle *style(const QtFontStyle::Key &, const QString & = QString(), bool = false); |
| }; |
| |
| QtFontStyle *QtFontFoundry::style(const QtFontStyle::Key &key, const QString &styleName, bool create) |
| { |
| int pos = 0; |
| for (; pos < count; pos++) { |
| bool hasStyleName = !styleName.isEmpty(); // search styleName first if available |
| if (hasStyleName && !styles[pos]->styleName.isEmpty()) { |
| if (styles[pos]->styleName == styleName) |
| return styles[pos]; |
| } else { |
| if (styles[pos]->key == key) |
| return styles[pos]; |
| } |
| } |
| if (!create) |
| return nullptr; |
| |
| // qDebug("adding key (weight=%d, style=%d, oblique=%d stretch=%d) at %d", key.weight, key.style, key.oblique, key.stretch, pos); |
| if (!(count % 8)) { |
| QtFontStyle **newStyles = (QtFontStyle **) |
| realloc(styles, (((count+8) >> 3) << 3) * sizeof(QtFontStyle *)); |
| Q_CHECK_PTR(newStyles); |
| styles = newStyles; |
| } |
| |
| QtFontStyle *style = new QtFontStyle(key); |
| style->styleName = styleName; |
| styles[pos] = style; |
| count++; |
| return styles[pos]; |
| } |
| |
| |
| struct QtFontFamily |
| { |
| enum WritingSystemStatus { |
| Unknown = 0, |
| Supported = 1, |
| UnsupportedFT = 2, |
| Unsupported = UnsupportedFT |
| }; |
| |
| QtFontFamily(const QString &n) |
| : |
| populated(false), |
| fixedPitch(false), |
| name(n), count(0), foundries(nullptr) |
| { |
| memset(writingSystems, 0, sizeof(writingSystems)); |
| } |
| ~QtFontFamily() { |
| while (count--) |
| delete foundries[count]; |
| free(foundries); |
| } |
| |
| bool populated : 1; |
| bool fixedPitch : 1; |
| |
| QString name; |
| QStringList aliases; |
| int count; |
| QtFontFoundry **foundries; |
| |
| unsigned char writingSystems[QFontDatabase::WritingSystemsCount]; |
| |
| bool matchesFamilyName(const QString &familyName) const; |
| QtFontFoundry *foundry(const QString &f, bool = false); |
| |
| void ensurePopulated(); |
| }; |
| |
| QtFontFoundry *QtFontFamily::foundry(const QString &f, bool create) |
| { |
| if (f.isNull() && count == 1) |
| return foundries[0]; |
| |
| for (int i = 0; i < count; i++) { |
| if (foundries[i]->name.compare(f, Qt::CaseInsensitive) == 0) |
| return foundries[i]; |
| } |
| if (!create) |
| return nullptr; |
| |
| if (!(count % 8)) { |
| QtFontFoundry **newFoundries = (QtFontFoundry **) |
| realloc(foundries, |
| (((count+8) >> 3) << 3) * sizeof(QtFontFoundry *)); |
| Q_CHECK_PTR(newFoundries); |
| foundries = newFoundries; |
| } |
| |
| foundries[count] = new QtFontFoundry(f); |
| return foundries[count++]; |
| } |
| |
| static inline bool equalsCaseInsensitive(const QString &a, const QString &b) |
| { |
| return a.size() == b.size() && a.compare(b, Qt::CaseInsensitive) == 0; |
| } |
| |
| bool QtFontFamily::matchesFamilyName(const QString &familyName) const |
| { |
| return equalsCaseInsensitive(name, familyName) || aliases.contains(familyName, Qt::CaseInsensitive); |
| } |
| |
| void QtFontFamily::ensurePopulated() |
| { |
| if (populated) |
| return; |
| |
| QGuiApplicationPrivate::platformIntegration()->fontDatabase()->populateFamily(name); |
| Q_ASSERT_X(populated, Q_FUNC_INFO, qPrintable(name)); |
| } |
| |
| |
| struct FallbacksCacheKey { |
| QString family; |
| QFont::Style style; |
| QFont::StyleHint styleHint; |
| QChar::Script script; |
| }; |
| |
| inline bool operator==(const FallbacksCacheKey &lhs, const FallbacksCacheKey &rhs) noexcept |
| { |
| return lhs.script == rhs.script && |
| lhs.styleHint == rhs.styleHint && |
| lhs.style == rhs.style && |
| lhs.family == rhs.family; |
| } |
| |
| inline bool operator!=(const FallbacksCacheKey &lhs, const FallbacksCacheKey &rhs) noexcept |
| { |
| return !operator==(lhs, rhs); |
| } |
| |
| inline uint qHash(const FallbacksCacheKey &key, uint seed = 0) noexcept |
| { |
| QtPrivate::QHashCombine hash; |
| seed = hash(seed, key.family); |
| seed = hash(seed, int(key.style)); |
| seed = hash(seed, int(key.styleHint)); |
| seed = hash(seed, int(key.script)); |
| return seed; |
| } |
| |
| |
| class QFontDatabasePrivate |
| { |
| public: |
| QFontDatabasePrivate() |
| : count(0), families(nullptr), |
| fallbacksCache(64) |
| { } |
| |
| ~QFontDatabasePrivate() { |
| free(); |
| } |
| |
| enum FamilyRequestFlags { |
| RequestFamily = 0, |
| EnsureCreated, |
| EnsurePopulated |
| }; |
| |
| QtFontFamily *family(const QString &f, FamilyRequestFlags flags = EnsurePopulated); |
| void free() { |
| while (count--) |
| delete families[count]; |
| ::free(families); |
| families = nullptr; |
| count = 0; |
| // don't clear the memory fonts! |
| } |
| |
| int count; |
| QtFontFamily **families; |
| |
| QCache<FallbacksCacheKey, QStringList> fallbacksCache; |
| |
| |
| struct ApplicationFont { |
| QString fileName; |
| QByteArray data; |
| QStringList families; |
| }; |
| QVector<ApplicationFont> applicationFonts; |
| int addAppFont(const QByteArray &fontData, const QString &fileName); |
| bool isApplicationFont(const QString &fileName); |
| |
| void invalidate(); |
| }; |
| Q_DECLARE_TYPEINFO(QFontDatabasePrivate::ApplicationFont, Q_MOVABLE_TYPE); |
| |
| void QFontDatabasePrivate::invalidate() |
| { |
| QFontCache::instance()->clear(); |
| |
| fallbacksCache.clear(); |
| free(); |
| QGuiApplicationPrivate::platformIntegration()->fontDatabase()->invalidate(); |
| emit static_cast<QGuiApplication *>(QCoreApplication::instance())->fontDatabaseChanged(); |
| } |
| |
| QtFontFamily *QFontDatabasePrivate::family(const QString &f, FamilyRequestFlags flags) |
| { |
| QtFontFamily *fam = nullptr; |
| |
| int low = 0; |
| int high = count; |
| int pos = count / 2; |
| int res = 1; |
| if (count) { |
| while ((res = families[pos]->name.compare(f, Qt::CaseInsensitive)) && pos != low) { |
| if (res > 0) |
| high = pos; |
| else |
| low = pos; |
| pos = (high + low) / 2; |
| } |
| if (!res) |
| fam = families[pos]; |
| } |
| |
| if (!fam && (flags & EnsureCreated)) { |
| if (res < 0) |
| pos++; |
| |
| // qDebug() << "adding family " << f.toLatin1() << " at " << pos << " total=" << count; |
| if (!(count % 8)) { |
| QtFontFamily **newFamilies = (QtFontFamily **) |
| realloc(families, |
| (((count+8) >> 3) << 3) * sizeof(QtFontFamily *)); |
| Q_CHECK_PTR(newFamilies); |
| families = newFamilies; |
| } |
| |
| QtFontFamily *family = new QtFontFamily(f); |
| memmove(families + pos + 1, families + pos, (count-pos)*sizeof(QtFontFamily *)); |
| families[pos] = family; |
| count++; |
| |
| fam = families[pos]; |
| } |
| |
| if (fam && (flags & EnsurePopulated)) |
| fam->ensurePopulated(); |
| |
| return fam; |
| } |
| |
| |
| |
| static const int scriptForWritingSystem[] = { |
| QChar::Script_Common, // Any |
| QChar::Script_Latin, // Latin |
| QChar::Script_Greek, // Greek |
| QChar::Script_Cyrillic, // Cyrillic |
| QChar::Script_Armenian, // Armenian |
| QChar::Script_Hebrew, // Hebrew |
| QChar::Script_Arabic, // Arabic |
| QChar::Script_Syriac, // Syriac |
| QChar::Script_Thaana, // Thaana |
| QChar::Script_Devanagari, // Devanagari |
| QChar::Script_Bengali, // Bengali |
| QChar::Script_Gurmukhi, // Gurmukhi |
| QChar::Script_Gujarati, // Gujarati |
| QChar::Script_Oriya, // Oriya |
| QChar::Script_Tamil, // Tamil |
| QChar::Script_Telugu, // Telugu |
| QChar::Script_Kannada, // Kannada |
| QChar::Script_Malayalam, // Malayalam |
| QChar::Script_Sinhala, // Sinhala |
| QChar::Script_Thai, // Thai |
| QChar::Script_Lao, // Lao |
| QChar::Script_Tibetan, // Tibetan |
| QChar::Script_Myanmar, // Myanmar |
| QChar::Script_Georgian, // Georgian |
| QChar::Script_Khmer, // Khmer |
| QChar::Script_Han, // SimplifiedChinese |
| QChar::Script_Han, // TraditionalChinese |
| QChar::Script_Han, // Japanese |
| QChar::Script_Hangul, // Korean |
| QChar::Script_Latin, // Vietnamese |
| QChar::Script_Common, // Symbol |
| QChar::Script_Ogham, // Ogham |
| QChar::Script_Runic, // Runic |
| QChar::Script_Nko // Nko |
| }; |
| |
| Q_STATIC_ASSERT(sizeof(scriptForWritingSystem) / sizeof(scriptForWritingSystem[0]) == QFontDatabase::WritingSystemsCount); |
| |
| Q_GUI_EXPORT int qt_script_for_writing_system(QFontDatabase::WritingSystem writingSystem) |
| { |
| return scriptForWritingSystem[writingSystem]; |
| } |
| |
| |
| |
| |
| /*! |
| \internal |
| |
| This makes sense of the font family name: |
| |
| if the family name contains a '[' and a ']', then we take the text |
| between the square brackets as the foundry, and the text before the |
| square brackets as the family (ie. "Arial [Monotype]") |
| */ |
| static void parseFontName(const QString &name, QString &foundry, QString &family) |
| { |
| int i = name.indexOf(QLatin1Char('[')); |
| int li = name.lastIndexOf(QLatin1Char(']')); |
| if (i >= 0 && li >= 0 && i < li) { |
| foundry = name.mid(i + 1, li - i - 1); |
| if (i > 0 && name[i - 1] == QLatin1Char(' ')) |
| i--; |
| family = name.left(i); |
| } else { |
| foundry.clear(); |
| family = name; |
| } |
| |
| // capitalize the family/foundry names |
| bool space = true; |
| QChar *s = family.data(); |
| int len = family.length(); |
| while(len--) { |
| if (space) *s = s->toUpper(); |
| space = s->isSpace(); |
| ++s; |
| } |
| |
| space = true; |
| s = foundry.data(); |
| len = foundry.length(); |
| while(len--) { |
| if (space) *s = s->toUpper(); |
| space = s->isSpace(); |
| ++s; |
| } |
| } |
| |
| |
| struct QtFontDesc |
| { |
| inline QtFontDesc() : family(nullptr), foundry(nullptr), style(nullptr), size(nullptr) {} |
| QtFontFamily *family; |
| QtFontFoundry *foundry; |
| QtFontStyle *style; |
| QtFontSize *size; |
| }; |
| |
| static void initFontDef(const QtFontDesc &desc, const QFontDef &request, QFontDef *fontDef, bool multi) |
| { |
| fontDef->family = desc.family->name; |
| if (! desc.foundry->name.isEmpty() && desc.family->count > 1) |
| fontDef->family += QLatin1String(" [") + desc.foundry->name + QLatin1Char(']'); |
| |
| if (desc.style->smoothScalable |
| || QGuiApplicationPrivate::platformIntegration()->fontDatabase()->fontsAlwaysScalable() |
| || (desc.style->bitmapScalable && (request.styleStrategy & QFont::PreferMatch))) { |
| fontDef->pixelSize = request.pixelSize; |
| } else { |
| fontDef->pixelSize = desc.size->pixelSize; |
| } |
| fontDef->pointSize = request.pointSize; |
| |
| fontDef->styleHint = request.styleHint; |
| fontDef->styleStrategy = request.styleStrategy; |
| |
| if (!multi) |
| fontDef->weight = desc.style->key.weight; |
| if (!multi) |
| fontDef->style = desc.style->key.style; |
| fontDef->fixedPitch = desc.family->fixedPitch; |
| fontDef->ignorePitch = false; |
| } |
| |
| static QStringList familyList(const QFontDef &req) |
| { |
| // list of families to try |
| QStringList family_list; |
| |
| family_list << req.families; |
| if (!req.family.isEmpty()) { |
| const auto list = req.family.splitRef(QLatin1Char(',')); |
| const int numFamilies = list.size(); |
| family_list.reserve(numFamilies); |
| for (int i = 0; i < numFamilies; ++i) { |
| QStringRef str = list.at(i).trimmed(); |
| if ((str.startsWith(QLatin1Char('"')) && str.endsWith(QLatin1Char('"'))) |
| || (str.startsWith(QLatin1Char('\'')) && str.endsWith(QLatin1Char('\'')))) |
| str = str.mid(1, str.length() - 2); |
| if (!family_list.contains(str)) |
| family_list << str.toString(); |
| } |
| } |
| // append the substitute list for each family in family_list |
| for (int i = 0, size = family_list.size(); i < size; ++i) |
| family_list += QFont::substitutes(family_list.at(i)); |
| |
| return family_list; |
| } |
| |
| Q_GLOBAL_STATIC(QFontDatabasePrivate, privateDb) |
| Q_GLOBAL_STATIC(QRecursiveMutex, fontDatabaseMutex) |
| |
| // used in qguiapplication.cpp |
| void qt_cleanupFontDatabase() |
| { |
| QFontDatabasePrivate *db = privateDb(); |
| if (db) { |
| db->fallbacksCache.clear(); |
| db->free(); |
| } |
| } |
| |
| // used in qfont.cpp |
| QRecursiveMutex *qt_fontdatabase_mutex() |
| { |
| return fontDatabaseMutex(); |
| } |
| |
| |
| void qt_registerFont(const QString &familyName, const QString &stylename, |
| const QString &foundryname, int weight, |
| QFont::Style style, int stretch, bool antialiased, |
| bool scalable, int pixelSize, bool fixedPitch, |
| const QSupportedWritingSystems &writingSystems, void *handle) |
| { |
| QFontDatabasePrivate *d = privateDb(); |
| qCDebug(lcFontDb) << "Adding font: familyName" << familyName << "stylename" << stylename << "weight" << weight |
| << "style" << style << "pixelSize" << pixelSize << "antialiased" << antialiased << "fixed" << fixedPitch; |
| QtFontStyle::Key styleKey; |
| styleKey.style = style; |
| styleKey.weight = weight; |
| styleKey.stretch = stretch; |
| QtFontFamily *f = d->family(familyName, QFontDatabasePrivate::EnsureCreated); |
| f->fixedPitch = fixedPitch; |
| |
| for (int i = 0; i < QFontDatabase::WritingSystemsCount; ++i) { |
| if (writingSystems.supported(QFontDatabase::WritingSystem(i))) |
| f->writingSystems[i] = QtFontFamily::Supported; |
| } |
| |
| QtFontFoundry *foundry = f->foundry(foundryname, true); |
| QtFontStyle *fontStyle = foundry->style(styleKey, stylename, true); |
| fontStyle->smoothScalable = scalable; |
| fontStyle->antialiased = antialiased; |
| QtFontSize *size = fontStyle->pixelSize(pixelSize ? pixelSize : SMOOTH_SCALABLE, true); |
| if (size->handle) { |
| QPlatformIntegration *integration = QGuiApplicationPrivate::platformIntegration(); |
| if (integration) |
| integration->fontDatabase()->releaseHandle(size->handle); |
| } |
| size->handle = handle; |
| f->populated = true; |
| } |
| |
| void qt_registerFontFamily(const QString &familyName) |
| { |
| // Create uninitialized/unpopulated family |
| privateDb()->family(familyName, QFontDatabasePrivate::EnsureCreated); |
| } |
| |
| void qt_registerAliasToFontFamily(const QString &familyName, const QString &alias) |
| { |
| if (alias.isEmpty()) |
| return; |
| |
| QFontDatabasePrivate *d = privateDb(); |
| QtFontFamily *f = d->family(familyName, QFontDatabasePrivate::RequestFamily); |
| if (!f) |
| return; |
| |
| if (f->aliases.contains(alias, Qt::CaseInsensitive)) |
| return; |
| |
| f->aliases.push_back(alias); |
| } |
| |
| QString qt_resolveFontFamilyAlias(const QString &alias) |
| { |
| if (!alias.isEmpty()) { |
| const QFontDatabasePrivate *d = privateDb(); |
| for (int i = 0; i < d->count; ++i) |
| if (d->families[i]->matchesFamilyName(alias)) |
| return d->families[i]->name; |
| } |
| return alias; |
| } |
| |
| bool qt_isFontFamilyPopulated(const QString &familyName) |
| { |
| QFontDatabasePrivate *d = privateDb(); |
| QtFontFamily *f = d->family(familyName, QFontDatabasePrivate::RequestFamily); |
| return f != nullptr && f->populated; |
| } |
| |
| /*! |
| Returns a list of alternative fonts for the specified \a family and |
| \a style and \a script using the \a styleHint given. |
| |
| Default implementation returns a list of fonts for which \a style and \a script support |
| has been reported during the font database population. |
| */ |
| QStringList QPlatformFontDatabase::fallbacksForFamily(const QString &family, QFont::Style style, QFont::StyleHint styleHint, QChar::Script script) const |
| { |
| Q_UNUSED(family); |
| Q_UNUSED(styleHint); |
| |
| QStringList preferredFallbacks; |
| QStringList otherFallbacks; |
| |
| size_t writingSystem = std::find(scriptForWritingSystem, |
| scriptForWritingSystem + QFontDatabase::WritingSystemsCount, |
| script) - scriptForWritingSystem; |
| if (writingSystem >= QFontDatabase::WritingSystemsCount) |
| writingSystem = QFontDatabase::Any; |
| |
| QFontDatabasePrivate *db = privateDb(); |
| for (int i = 0; i < db->count; ++i) { |
| QtFontFamily *f = db->families[i]; |
| |
| f->ensurePopulated(); |
| |
| if (writingSystem > QFontDatabase::Any && f->writingSystems[writingSystem] != QtFontFamily::Supported) |
| continue; |
| |
| for (int j = 0; j < f->count; ++j) { |
| QtFontFoundry *foundry = f->foundries[j]; |
| |
| for (int k = 0; k < foundry->count; ++k) { |
| QString name = foundry->name.isEmpty() |
| ? f->name |
| : f->name + QLatin1String(" [") + foundry->name + QLatin1Char(']'); |
| if (style == foundry->styles[k]->key.style) |
| preferredFallbacks.append(name); |
| else |
| otherFallbacks.append(name); |
| } |
| } |
| } |
| |
| return preferredFallbacks + otherFallbacks; |
| } |
| |
| static void initializeDb(); |
| |
| static QStringList fallbacksForFamily(const QString &family, QFont::Style style, QFont::StyleHint styleHint, QChar::Script script) |
| { |
| QFontDatabasePrivate *db = privateDb(); |
| if (!db->count) |
| initializeDb(); |
| |
| const FallbacksCacheKey cacheKey = { family, style, styleHint, script }; |
| |
| if (const QStringList *fallbacks = db->fallbacksCache.object(cacheKey)) |
| return *fallbacks; |
| |
| // make sure that the db has all fallback families |
| QStringList retList = QGuiApplicationPrivate::platformIntegration()->fontDatabase()->fallbacksForFamily(family,style,styleHint,script); |
| |
| QStringList::iterator i; |
| for (i = retList.begin(); i != retList.end(); ++i) { |
| bool contains = false; |
| for (int j = 0; j < db->count; j++) { |
| if (db->families[j]->matchesFamilyName(*i)) { |
| contains = true; |
| break; |
| } |
| } |
| if (!contains) { |
| i = retList.erase(i); |
| --i; |
| } |
| } |
| |
| db->fallbacksCache.insert(cacheKey, new QStringList(retList)); |
| |
| return retList; |
| } |
| |
| QStringList qt_fallbacksForFamily(const QString &family, QFont::Style style, QFont::StyleHint styleHint, QChar::Script script) |
| { |
| QMutexLocker locker(fontDatabaseMutex()); |
| return fallbacksForFamily(family, style, styleHint, script); |
| } |
| |
| static void registerFont(QFontDatabasePrivate::ApplicationFont *fnt); |
| |
| static void initializeDb() |
| { |
| QFontDatabasePrivate *db = privateDb(); |
| |
| // init by asking for the platformfontdb for the first time or after invalidation |
| if (!db->count) { |
| QGuiApplicationPrivate::platformIntegration()->fontDatabase()->populateFontDatabase(); |
| for (int i = 0; i < db->applicationFonts.count(); i++) { |
| if (!db->applicationFonts.at(i).families.isEmpty()) |
| registerFont(&db->applicationFonts[i]); |
| } |
| } |
| } |
| |
| static inline void load(const QString & = QString(), int = -1) |
| { |
| // Only initialize the database if it has been cleared or not initialized yet |
| if (!privateDb()->count) |
| initializeDb(); |
| } |
| |
| static |
| QFontEngine *loadSingleEngine(int script, |
| const QFontDef &request, |
| QtFontFamily *family, QtFontFoundry *foundry, |
| QtFontStyle *style, QtFontSize *size) |
| { |
| Q_UNUSED(foundry); |
| |
| Q_ASSERT(size); |
| QPlatformFontDatabase *pfdb = QGuiApplicationPrivate::platformIntegration()->fontDatabase(); |
| int pixelSize = size->pixelSize; |
| if (!pixelSize || (style->smoothScalable && pixelSize == SMOOTH_SCALABLE) |
| || pfdb->fontsAlwaysScalable()) { |
| pixelSize = request.pixelSize; |
| } |
| |
| QFontDef def = request; |
| def.pixelSize = pixelSize; |
| |
| QFontCache *fontCache = QFontCache::instance(); |
| |
| QFontCache::Key key(def,script); |
| QFontEngine *engine = fontCache->findEngine(key); |
| if (!engine) { |
| const bool cacheForCommonScript = script != QChar::Script_Common |
| && (family->writingSystems[QFontDatabase::Latin] & QtFontFamily::Supported) != 0; |
| |
| if (Q_LIKELY(cacheForCommonScript)) { |
| // fast path: check if engine was loaded for another script |
| key.script = QChar::Script_Common; |
| engine = fontCache->findEngine(key); |
| key.script = script; |
| if (engine) { |
| // Also check for OpenType tables when using complex scripts |
| if (Q_UNLIKELY(!engine->supportsScript(QChar::Script(script)))) { |
| qWarning(" OpenType support missing for \"%s\", script %d", |
| qPrintable(def.family), script); |
| return nullptr; |
| } |
| |
| engine->isSmoothlyScalable = style->smoothScalable; |
| fontCache->insertEngine(key, engine); |
| return engine; |
| } |
| } |
| |
| // To avoid synthesized stretch we need a matching stretch to be 100 after this point. |
| // If stretch didn't match exactly we need to calculate the new stretch factor. |
| // This only done if not matched by styleName. |
| if (style->key.stretch != 0 && request.stretch != 0 |
| && (request.styleName.isEmpty() || request.styleName != style->styleName)) { |
| def.stretch = (request.stretch * 100 + style->key.stretch / 2) / style->key.stretch; |
| } else { |
| def.stretch = 100; |
| } |
| |
| engine = pfdb->fontEngine(def, size->handle); |
| if (engine) { |
| // Also check for OpenType tables when using complex scripts |
| if (!engine->supportsScript(QChar::Script(script))) { |
| qWarning(" OpenType support missing for \"%s\", script %d", |
| + qPrintable(def.family), script); |
| if (engine->ref.loadRelaxed() == 0) |
| delete engine; |
| return nullptr; |
| } |
| |
| engine->isSmoothlyScalable = style->smoothScalable; |
| fontCache->insertEngine(key, engine); |
| |
| if (Q_LIKELY(cacheForCommonScript && !engine->symbol)) { |
| // cache engine for Common script as well |
| key.script = QChar::Script_Common; |
| if (!fontCache->findEngine(key)) |
| fontCache->insertEngine(key, engine); |
| } |
| } |
| } |
| return engine; |
| } |
| |
| static |
| QFontEngine *loadEngine(int script, const QFontDef &request, |
| QtFontFamily *family, QtFontFoundry *foundry, |
| QtFontStyle *style, QtFontSize *size) |
| { |
| QFontEngine *engine = loadSingleEngine(script, request, family, foundry, style, size); |
| |
| if (engine && !(request.styleStrategy & QFont::NoFontMerging) && !engine->symbol) { |
| Q_TRACE(QFontDatabase_loadEngine, request.family, request.pointSize); |
| |
| QPlatformFontDatabase *pfdb = QGuiApplicationPrivate::platformIntegration()->fontDatabase(); |
| QFontEngineMulti *pfMultiEngine = pfdb->fontEngineMulti(engine, QChar::Script(script)); |
| if (!request.fallBackFamilies.isEmpty()) { |
| QStringList fallbacks = request.fallBackFamilies; |
| |
| QFont::StyleHint styleHint = QFont::StyleHint(request.styleHint); |
| if (styleHint == QFont::AnyStyle && request.fixedPitch) |
| styleHint = QFont::TypeWriter; |
| |
| fallbacks += fallbacksForFamily(family->name, QFont::Style(style->key.style), styleHint, QChar::Script(script)); |
| |
| pfMultiEngine->setFallbackFamiliesList(fallbacks); |
| } |
| engine = pfMultiEngine; |
| |
| // Cache Multi font engine as well in case we got the single |
| // font engine when we are actually looking for a Multi one |
| QFontCache::Key key(request, script, 1); |
| QFontCache::instance()->insertEngine(key, engine); |
| } |
| |
| return engine; |
| } |
| |
| static void registerFont(QFontDatabasePrivate::ApplicationFont *fnt) |
| { |
| fnt->families = QGuiApplicationPrivate::platformIntegration()->fontDatabase()->addApplicationFont(fnt->data,fnt->fileName); |
| } |
| |
| static QtFontStyle *bestStyle(QtFontFoundry *foundry, const QtFontStyle::Key &styleKey, |
| const QString &styleName = QString()) |
| { |
| int best = 0; |
| int dist = 0xffff; |
| |
| for ( int i = 0; i < foundry->count; i++ ) { |
| QtFontStyle *style = foundry->styles[i]; |
| |
| if (!styleName.isEmpty() && styleName == style->styleName) { |
| dist = 0; |
| best = i; |
| break; |
| } |
| |
| int d = qAbs( styleKey.weight - style->key.weight ); |
| |
| if ( styleKey.stretch != 0 && style->key.stretch != 0 ) { |
| d += qAbs( styleKey.stretch - style->key.stretch ); |
| } |
| |
| if (styleKey.style != style->key.style) { |
| if (styleKey.style != QFont::StyleNormal && style->key.style != QFont::StyleNormal) |
| // one is italic, the other oblique |
| d += 0x0001; |
| else |
| d += 0x1000; |
| } |
| |
| if ( d < dist ) { |
| best = i; |
| dist = d; |
| } |
| } |
| |
| qCDebug(lcFontMatch, " best style has distance 0x%x", dist ); |
| return foundry->styles[best]; |
| } |
| |
| |
| static |
| unsigned int bestFoundry(int script, unsigned int score, int styleStrategy, |
| const QtFontFamily *family, const QString &foundry_name, |
| QtFontStyle::Key styleKey, int pixelSize, char pitch, |
| QtFontDesc *desc, const QString &styleName = QString()) |
| { |
| Q_UNUSED(script); |
| Q_UNUSED(pitch); |
| |
| desc->foundry = nullptr; |
| desc->style = nullptr; |
| desc->size = nullptr; |
| |
| |
| qCDebug(lcFontMatch, " REMARK: looking for best foundry for family '%s' [%d]", family->name.toLatin1().constData(), family->count); |
| |
| for (int x = 0; x < family->count; ++x) { |
| QtFontFoundry *foundry = family->foundries[x]; |
| if (!foundry_name.isEmpty() && foundry->name.compare(foundry_name, Qt::CaseInsensitive) != 0) |
| continue; |
| |
| qCDebug(lcFontMatch, " looking for matching style in foundry '%s' %d", |
| foundry->name.isEmpty() ? "-- none --" : foundry->name.toLatin1().constData(), foundry->count); |
| |
| QtFontStyle *style = bestStyle(foundry, styleKey, styleName); |
| |
| if (!style->smoothScalable && (styleStrategy & QFont::ForceOutline)) { |
| qCDebug(lcFontMatch, " ForceOutline set, but not smoothly scalable"); |
| continue; |
| } |
| |
| int px = -1; |
| QtFontSize *size = nullptr; |
| |
| // 1. see if we have an exact matching size |
| if (!(styleStrategy & QFont::ForceOutline)) { |
| size = style->pixelSize(pixelSize); |
| if (size) { |
| qCDebug(lcFontMatch, " found exact size match (%d pixels)", size->pixelSize); |
| px = size->pixelSize; |
| } |
| } |
| |
| // 2. see if we have a smoothly scalable font |
| if (!size && style->smoothScalable && ! (styleStrategy & QFont::PreferBitmap)) { |
| size = style->pixelSize(SMOOTH_SCALABLE); |
| if (size) { |
| qCDebug(lcFontMatch, " found smoothly scalable font (%d pixels)", pixelSize); |
| px = pixelSize; |
| } |
| } |
| |
| // 3. see if we have a bitmap scalable font |
| if (!size && style->bitmapScalable && (styleStrategy & QFont::PreferMatch)) { |
| size = style->pixelSize(0); |
| if (size) { |
| qCDebug(lcFontMatch, " found bitmap scalable font (%d pixels)", pixelSize); |
| px = pixelSize; |
| } |
| } |
| |
| |
| // 4. find closest size match |
| if (! size) { |
| unsigned int distance = ~0u; |
| for (int x = 0; x < style->count; ++x) { |
| |
| unsigned int d; |
| if (style->pixelSizes[x].pixelSize < pixelSize) { |
| // penalize sizes that are smaller than the |
| // requested size, due to truncation from floating |
| // point to integer conversions |
| d = pixelSize - style->pixelSizes[x].pixelSize + 1; |
| } else { |
| d = style->pixelSizes[x].pixelSize - pixelSize; |
| } |
| |
| if (d < distance) { |
| distance = d; |
| size = style->pixelSizes + x; |
| qCDebug(lcFontMatch, " best size so far: %3d (%d)", size->pixelSize, pixelSize); |
| } |
| } |
| |
| if (!size) { |
| qCDebug(lcFontMatch, " no size supports the script we want"); |
| continue; |
| } |
| |
| if (style->bitmapScalable && ! (styleStrategy & QFont::PreferQuality) && |
| (distance * 10 / pixelSize) >= 2) { |
| // the closest size is not close enough, go ahead and |
| // use a bitmap scaled font |
| size = style->pixelSize(0); |
| px = pixelSize; |
| } else { |
| px = size->pixelSize; |
| } |
| } |
| |
| |
| unsigned int this_score = 0x0000; |
| enum { |
| PitchMismatch = 0x4000, |
| StyleMismatch = 0x2000, |
| BitmapScaledPenalty = 0x1000 |
| }; |
| if (pitch != '*') { |
| if ((pitch == 'm' && !family->fixedPitch) |
| || (pitch == 'p' && family->fixedPitch)) |
| this_score += PitchMismatch; |
| } |
| if (styleKey != style->key) |
| this_score += StyleMismatch; |
| if (!style->smoothScalable && px != size->pixelSize) // bitmap scaled |
| this_score += BitmapScaledPenalty; |
| if (px != pixelSize) // close, but not exact, size match |
| this_score += qAbs(px - pixelSize); |
| |
| if (this_score < score) { |
| qCDebug(lcFontMatch, " found a match: score %x best score so far %x", |
| this_score, score); |
| |
| score = this_score; |
| desc->foundry = foundry; |
| desc->style = style; |
| desc->size = size; |
| } else { |
| qCDebug(lcFontMatch, " score %x no better than best %x", this_score, score); |
| } |
| } |
| |
| return score; |
| } |
| |
| static bool matchFamilyName(const QString &familyName, QtFontFamily *f) |
| { |
| if (familyName.isEmpty()) |
| return true; |
| return f->matchesFamilyName(familyName); |
| } |
| |
| /*! |
| \internal |
| |
| Tries to find the best match for a given request and family/foundry |
| */ |
| static int match(int script, const QFontDef &request, |
| const QString &family_name, const QString &foundry_name, |
| QtFontDesc *desc, const QList<int> &blacklistedFamilies) |
| { |
| int result = -1; |
| |
| QtFontStyle::Key styleKey; |
| styleKey.style = request.style; |
| styleKey.weight = request.weight; |
| // Prefer a stretch closest to 100. |
| styleKey.stretch = request.stretch ? request.stretch : 100; |
| char pitch = request.ignorePitch ? '*' : request.fixedPitch ? 'm' : 'p'; |
| |
| |
| qCDebug(lcFontMatch, "QFontDatabase::match\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); |
| |
| desc->family = nullptr; |
| desc->foundry = nullptr; |
| desc->style = nullptr; |
| desc->size = nullptr; |
| |
| unsigned int score = ~0u; |
| |
| load(family_name, script); |
| |
| size_t writingSystem = std::find(scriptForWritingSystem, scriptForWritingSystem + |
| QFontDatabase::WritingSystemsCount, script) - scriptForWritingSystem; |
| if (writingSystem >= QFontDatabase::WritingSystemsCount) |
| writingSystem = QFontDatabase::Any; |
| |
| QFontDatabasePrivate *db = privateDb(); |
| for (int x = 0; x < db->count; ++x) { |
| if (blacklistedFamilies.contains(x)) |
| continue; |
| QtFontDesc test; |
| test.family = db->families[x]; |
| |
| if (!matchFamilyName(family_name, test.family)) |
| continue; |
| |
| test.family->ensurePopulated(); |
| |
| // Check if family is supported in the script we want |
| if (writingSystem != QFontDatabase::Any && !(test.family->writingSystems[writingSystem] & QtFontFamily::Supported)) |
| continue; |
| |
| // as we know the script is supported, we can be sure |
| // to find a matching font here. |
| unsigned int newscore = |
| bestFoundry(script, score, request.styleStrategy, |
| test.family, foundry_name, styleKey, request.pixelSize, pitch, |
| &test, request.styleName); |
| if (test.foundry == nullptr && !foundry_name.isEmpty()) { |
| // the specific foundry was not found, so look for |
| // any foundry matching our requirements |
| newscore = bestFoundry(script, score, request.styleStrategy, test.family, |
| QString(), styleKey, request.pixelSize, |
| pitch, &test, request.styleName); |
| } |
| |
| if (newscore < score) { |
| result = x; |
| score = newscore; |
| *desc = test; |
| } |
| if (newscore < 10) // xlfd instead of FT... just accept it |
| break; |
| } |
| return result; |
| } |
| |
| static QString styleStringHelper(int weight, QFont::Style style) |
| { |
| QString result; |
| if (weight > QFont::Normal) { |
| if (weight >= QFont::Black) |
| result = QCoreApplication::translate("QFontDatabase", "Black"); |
| else if (weight >= QFont::ExtraBold) |
| result = QCoreApplication::translate("QFontDatabase", "Extra Bold"); |
| else if (weight >= QFont::Bold) |
| result = QCoreApplication::translate("QFontDatabase", "Bold"); |
| else if (weight >= QFont::DemiBold) |
| result = QCoreApplication::translate("QFontDatabase", "Demi Bold"); |
| else if (weight >= QFont::Medium) |
| result = QCoreApplication::translate("QFontDatabase", "Medium", "The Medium font weight"); |
| } else { |
| if (weight <= QFont::Thin) |
| result = QCoreApplication::translate("QFontDatabase", "Thin"); |
| else if (weight <= QFont::ExtraLight) |
| result = QCoreApplication::translate("QFontDatabase", "Extra Light"); |
| else if (weight <= QFont::Light) |
| result = QCoreApplication::translate("QFontDatabase", "Light"); |
| } |
| |
| if (style == QFont::StyleItalic) |
| result += QLatin1Char(' ') + QCoreApplication::translate("QFontDatabase", "Italic"); |
| else if (style == QFont::StyleOblique) |
| result += QLatin1Char(' ') + QCoreApplication::translate("QFontDatabase", "Oblique"); |
| |
| if (result.isEmpty()) |
| result = QCoreApplication::translate("QFontDatabase", "Normal", "The Normal or Regular font weight"); |
| |
| return result.simplified(); |
| } |
| |
| /*! |
| Returns a string that describes the style of the \a font. For |
| example, "Bold Italic", "Bold", "Italic" or "Normal". An empty |
| string may be returned. |
| */ |
| QString QFontDatabase::styleString(const QFont &font) |
| { |
| return font.styleName().isEmpty() ? styleStringHelper(font.weight(), font.style()) |
| : font.styleName(); |
| } |
| |
| /*! |
| Returns a string that describes the style of the \a fontInfo. For |
| example, "Bold Italic", "Bold", "Italic" or "Normal". An empty |
| string may be returned. |
| */ |
| QString QFontDatabase::styleString(const QFontInfo &fontInfo) |
| { |
| return fontInfo.styleName().isEmpty() ? styleStringHelper(fontInfo.weight(), fontInfo.style()) |
| : fontInfo.styleName(); |
| } |
| |
| |
| /*! |
| \class QFontDatabase |
| \threadsafe |
| \inmodule QtGui |
| |
| \brief The QFontDatabase class provides information about the fonts available in the underlying window system. |
| |
| \ingroup appearance |
| |
| The most common uses of this class are to query the database for |
| the list of font families() and for the pointSizes() and styles() |
| that are available for each family. An alternative to pointSizes() |
| is smoothSizes() which returns the sizes at which a given family |
| and style will look attractive. |
| |
| If the font family is available from two or more foundries the |
| foundry name is included in the family name; for example: |
| "Helvetica [Adobe]" and "Helvetica [Cronyx]". When you specify a |
| family, you can either use the old hyphenated "foundry-family" |
| format or the bracketed "family [foundry]" format; for example: |
| "Cronyx-Helvetica" or "Helvetica [Cronyx]". If the family has a |
| foundry it is always returned using the bracketed format, as is |
| the case with the value returned by families(). |
| |
| The font() function returns a QFont given a family, style and |
| point size. |
| |
| A family and style combination can be checked to see if it is |
| italic() or bold(), and to retrieve its weight(). Similarly we can |
| call isBitmapScalable(), isSmoothlyScalable(), isScalable() and |
| isFixedPitch(). |
| |
| Use the styleString() to obtain a text version of a style. |
| |
| The QFontDatabase class also supports some static functions, for |
| example, standardSizes(). You can retrieve the description of a |
| writing system using writingSystemName(), and a sample of |
| characters in a writing system with writingSystemSample(). |
| |
| Example: |
| |
| \snippet qfontdatabase/main.cpp 0 |
| \snippet qfontdatabase/main.cpp 1 |
| |
| This example gets the list of font families, the list of |
| styles for each family, and the point sizes that are available for |
| each combination of family and style, displaying this information |
| in a tree view. |
| |
| \sa QFont, QFontInfo, QFontMetrics, {Character Map Example} |
| */ |
| |
| /*! |
| Creates a font database object. |
| */ |
| QFontDatabase::QFontDatabase() |
| { |
| if (Q_UNLIKELY(!qApp || !QGuiApplicationPrivate::platformIntegration())) |
| qFatal("QFontDatabase: Must construct a QGuiApplication before accessing QFontDatabase"); |
| |
| QMutexLocker locker(fontDatabaseMutex()); |
| createDatabase(); |
| d = privateDb(); |
| } |
| |
| /*! |
| \enum QFontDatabase::WritingSystem |
| |
| \value Any |
| \value Latin |
| \value Greek |
| \value Cyrillic |
| \value Armenian |
| \value Hebrew |
| \value Arabic |
| \value Syriac |
| \value Thaana |
| \value Devanagari |
| \value Bengali |
| \value Gurmukhi |
| \value Gujarati |
| \value Oriya |
| \value Tamil |
| \value Telugu |
| \value Kannada |
| \value Malayalam |
| \value Sinhala |
| \value Thai |
| \value Lao |
| \value Tibetan |
| \value Myanmar |
| \value Georgian |
| \value Khmer |
| \value SimplifiedChinese |
| \value TraditionalChinese |
| \value Japanese |
| \value Korean |
| \value Vietnamese |
| \value Symbol |
| \value Other (the same as Symbol) |
| \value Ogham |
| \value Runic |
| \value Nko |
| |
| \omitvalue WritingSystemsCount |
| */ |
| |
| /*! |
| \enum QFontDatabase::SystemFont |
| |
| \value GeneralFont The default system font. |
| \value FixedFont The fixed font that the system recommends. |
| \value TitleFont The system standard font for titles. |
| \value SmallestReadableFont The smallest readable system font. |
| |
| \since 5.2 |
| */ |
| |
| /*! |
| Returns a sorted list of the available writing systems. This is |
| list generated from information about all installed fonts on the |
| system. |
| |
| \sa families() |
| */ |
| QList<QFontDatabase::WritingSystem> QFontDatabase::writingSystems() const |
| { |
| QMutexLocker locker(fontDatabaseMutex()); |
| |
| QT_PREPEND_NAMESPACE(load)(); |
| |
| quint64 writingSystemsFound = 0; |
| Q_STATIC_ASSERT(WritingSystemsCount < 64); |
| |
| for (int i = 0; i < d->count; ++i) { |
| QtFontFamily *family = d->families[i]; |
| family->ensurePopulated(); |
| |
| if (family->count == 0) |
| continue; |
| for (uint x = Latin; x < uint(WritingSystemsCount); ++x) { |
| if (family->writingSystems[x] & QtFontFamily::Supported) |
| writingSystemsFound |= quint64(1) << x; |
| } |
| } |
| |
| // mutex protection no longer needed - just working on local data now: |
| locker.unlock(); |
| |
| QList<WritingSystem> list; |
| list.reserve(qPopulationCount(writingSystemsFound)); |
| for (uint x = Latin ; x < uint(WritingSystemsCount); ++x) { |
| if (writingSystemsFound & (quint64(1) << x)) |
| list.push_back(WritingSystem(x)); |
| } |
| return list; |
| } |
| |
| |
| /*! |
| Returns a sorted list of the writing systems supported by a given |
| font \a family. |
| |
| \sa families() |
| */ |
| QList<QFontDatabase::WritingSystem> QFontDatabase::writingSystems(const QString &family) const |
| { |
| QString familyName, foundryName; |
| parseFontName(family, foundryName, familyName); |
| |
| QMutexLocker locker(fontDatabaseMutex()); |
| |
| QT_PREPEND_NAMESPACE(load)(); |
| |
| QList<WritingSystem> list; |
| QtFontFamily *f = d->family(familyName); |
| if (!f || f->count == 0) |
| return list; |
| |
| for (int x = Latin; x < WritingSystemsCount; ++x) { |
| const WritingSystem writingSystem = WritingSystem(x); |
| if (f->writingSystems[writingSystem] & QtFontFamily::Supported) |
| list.append(writingSystem); |
| } |
| return list; |
| } |
| |
| |
| /*! |
| Returns a sorted list of the available font families which support |
| the \a writingSystem. |
| |
| If a family exists in several foundries, the returned name for |
| that font is in the form "family [foundry]". Examples: "Times |
| [Adobe]", "Times [Cronyx]", "Palatino". |
| |
| \sa writingSystems() |
| */ |
| QStringList QFontDatabase::families(WritingSystem writingSystem) const |
| { |
| QMutexLocker locker(fontDatabaseMutex()); |
| |
| QT_PREPEND_NAMESPACE(load)(); |
| |
| QStringList flist; |
| for (int i = 0; i < d->count; i++) { |
| QtFontFamily *f = d->families[i]; |
| if (f->populated && f->count == 0) |
| continue; |
| if (writingSystem != Any) { |
| f->ensurePopulated(); |
| if (f->writingSystems[writingSystem] != QtFontFamily::Supported) |
| continue; |
| } |
| if (!f->populated || f->count == 1) { |
| flist.append(f->name); |
| } else { |
| for (int j = 0; j < f->count; j++) { |
| QString str = f->name; |
| QString foundry = f->foundries[j]->name; |
| if (!foundry.isEmpty()) { |
| str += QLatin1String(" ["); |
| str += foundry; |
| str += QLatin1Char(']'); |
| } |
| flist.append(str); |
| } |
| } |
| } |
| return flist; |
| } |
| |
| /*! |
| Returns a list of the styles available for the font family \a |
| family. Some example styles: "Light", "Light Italic", "Bold", |
| "Oblique", "Demi". The list may be empty. |
| |
| \sa families() |
| */ |
| QStringList QFontDatabase::styles(const QString &family) const |
| { |
| QString familyName, foundryName; |
| parseFontName(family, foundryName, familyName); |
| |
| QMutexLocker locker(fontDatabaseMutex()); |
| |
| QT_PREPEND_NAMESPACE(load)(familyName); |
| |
| QStringList l; |
| QtFontFamily *f = d->family(familyName); |
| if (!f) |
| return l; |
| |
| QtFontFoundry allStyles(foundryName); |
| for (int j = 0; j < f->count; j++) { |
| QtFontFoundry *foundry = f->foundries[j]; |
| if (foundryName.isEmpty() || foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { |
| for (int k = 0; k < foundry->count; k++) { |
| QtFontStyle::Key ke(foundry->styles[k]->key); |
| ke.stretch = 0; |
| allStyles.style(ke, foundry->styles[k]->styleName, true); |
| } |
| } |
| } |
| |
| l.reserve(allStyles.count); |
| for (int i = 0; i < allStyles.count; i++) { |
| l.append(allStyles.styles[i]->styleName.isEmpty() ? |
| styleStringHelper(allStyles.styles[i]->key.weight, |
| (QFont::Style)allStyles.styles[i]->key.style) : |
| allStyles.styles[i]->styleName); |
| } |
| return l; |
| } |
| |
| /*! |
| Returns \c true if the font that has family \a family and style \a |
| style is fixed pitch; otherwise returns \c false. |
| */ |
| |
| bool QFontDatabase::isFixedPitch(const QString &family, |
| const QString &style) const |
| { |
| Q_UNUSED(style); |
| |
| QString familyName, foundryName; |
| parseFontName(family, foundryName, familyName); |
| |
| QMutexLocker locker(fontDatabaseMutex()); |
| |
| QT_PREPEND_NAMESPACE(load)(familyName); |
| |
| QtFontFamily *f = d->family(familyName); |
| return (f && f->fixedPitch); |
| } |
| |
| /*! |
| Returns \c true if the font that has family \a family and style \a |
| style is a scalable bitmap font; otherwise returns \c false. Scaling |
| a bitmap font usually produces an unattractive hardly readable |
| result, because the pixels of the font are scaled. If you need to |
| scale a bitmap font it is better to scale it to one of the fixed |
| sizes returned by smoothSizes(). |
| |
| \sa isScalable(), isSmoothlyScalable() |
| */ |
| bool QFontDatabase::isBitmapScalable(const QString &family, |
| const QString &style) const |
| { |
| bool bitmapScalable = false; |
| QString familyName, foundryName; |
| parseFontName(family, foundryName, familyName); |
| |
| QMutexLocker locker(fontDatabaseMutex()); |
| |
| QT_PREPEND_NAMESPACE(load)(familyName); |
| |
| QtFontFamily *f = d->family(familyName); |
| if (!f) return bitmapScalable; |
| |
| QtFontStyle::Key styleKey(style); |
| for (int j = 0; j < f->count; j++) { |
| QtFontFoundry *foundry = f->foundries[j]; |
| if (foundryName.isEmpty() || foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { |
| for (int k = 0; k < foundry->count; k++) |
| if ((style.isEmpty() || |
| foundry->styles[k]->styleName == style || |
| foundry->styles[k]->key == styleKey) |
| && foundry->styles[k]->bitmapScalable && !foundry->styles[k]->smoothScalable) { |
| bitmapScalable = true; |
| goto end; |
| } |
| } |
| } |
| end: |
| return bitmapScalable; |
| } |
| |
| |
| /*! |
| Returns \c true if the font that has family \a family and style \a |
| style is smoothly scalable; otherwise returns \c false. If this |
| function returns \c true, it's safe to scale this font to any size, |
| and the result will always look attractive. |
| |
| \sa isScalable(), isBitmapScalable() |
| */ |
| bool QFontDatabase::isSmoothlyScalable(const QString &family, const QString &style) const |
| { |
| bool smoothScalable = false; |
| QString familyName, foundryName; |
| parseFontName(family, foundryName, familyName); |
| |
| QMutexLocker locker(fontDatabaseMutex()); |
| |
| QT_PREPEND_NAMESPACE(load)(familyName); |
| |
| QtFontFamily *f = d->family(familyName); |
| if (!f) { |
| for (int i = 0; i < d->count; i++) { |
| if (d->families[i]->matchesFamilyName(familyName)) { |
| f = d->families[i]; |
| f->ensurePopulated(); |
| break; |
| } |
| } |
| } |
| if (!f) return smoothScalable; |
| |
| QtFontStyle::Key styleKey(style); |
| for (int j = 0; j < f->count; j++) { |
| QtFontFoundry *foundry = f->foundries[j]; |
| if (foundryName.isEmpty() || foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { |
| for (int k = 0; k < foundry->count; k++) |
| if ((style.isEmpty() || |
| foundry->styles[k]->styleName == style || |
| foundry->styles[k]->key == styleKey) && foundry->styles[k]->smoothScalable) { |
| smoothScalable = true; |
| goto end; |
| } |
| } |
| } |
| end: |
| return smoothScalable; |
| } |
| |
| /*! |
| Returns \c true if the font that has family \a family and style \a |
| style is scalable; otherwise returns \c false. |
| |
| \sa isBitmapScalable(), isSmoothlyScalable() |
| */ |
| bool QFontDatabase::isScalable(const QString &family, |
| const QString &style) const |
| { |
| QMutexLocker locker(fontDatabaseMutex()); |
| if (isSmoothlyScalable(family, style)) |
| return true; |
| return isBitmapScalable(family, style); |
| } |
| |
| |
| /*! |
| Returns a list of the point sizes available for the font that has |
| family \a family and style \a styleName. The list may be empty. |
| |
| \sa smoothSizes(), standardSizes() |
| */ |
| QList<int> QFontDatabase::pointSizes(const QString &family, |
| const QString &styleName) |
| { |
| if (QGuiApplicationPrivate::platformIntegration()->fontDatabase()->fontsAlwaysScalable()) |
| return standardSizes(); |
| |
| bool smoothScalable = false; |
| QString familyName, foundryName; |
| parseFontName(family, foundryName, familyName); |
| |
| QMutexLocker locker(fontDatabaseMutex()); |
| |
| QT_PREPEND_NAMESPACE(load)(familyName); |
| |
| QList<int> sizes; |
| |
| QtFontFamily *fam = d->family(familyName); |
| if (!fam) return sizes; |
| |
| |
| const int dpi = qt_defaultDpiY(); // embedded |
| |
| QtFontStyle::Key styleKey(styleName); |
| for (int j = 0; j < fam->count; j++) { |
| QtFontFoundry *foundry = fam->foundries[j]; |
| if (foundryName.isEmpty() || foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { |
| QtFontStyle *style = foundry->style(styleKey, styleName); |
| if (!style) continue; |
| |
| if (style->smoothScalable) { |
| smoothScalable = true; |
| goto end; |
| } |
| for (int l = 0; l < style->count; l++) { |
| const QtFontSize *size = style->pixelSizes + l; |
| |
| if (size->pixelSize != 0 && size->pixelSize != SMOOTH_SCALABLE) { |
| const uint pointSize = qRound(size->pixelSize * 72.0 / dpi); |
| if (! sizes.contains(pointSize)) |
| sizes.append(pointSize); |
| } |
| } |
| } |
| } |
| end: |
| if (smoothScalable) |
| return standardSizes(); |
| |
| std::sort(sizes.begin(), sizes.end()); |
| return sizes; |
| } |
| |
| /*! |
| Returns a QFont object that has family \a family, style \a style |
| and point size \a pointSize. If no matching font could be created, |
| a QFont object that uses the application's default font is |
| returned. |
| */ |
| QFont QFontDatabase::font(const QString &family, const QString &style, |
| int pointSize) const |
| { |
| QString familyName, foundryName; |
| parseFontName(family, foundryName, familyName); |
| |
| QMutexLocker locker(fontDatabaseMutex()); |
| |
| QT_PREPEND_NAMESPACE(load)(familyName); |
| |
| QtFontFoundry allStyles(foundryName); |
| QtFontFamily *f = d->family(familyName); |
| if (!f) return QGuiApplication::font(); |
| |
| for (int j = 0; j < f->count; j++) { |
| QtFontFoundry *foundry = f->foundries[j]; |
| if (foundryName.isEmpty() || foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { |
| for (int k = 0; k < foundry->count; k++) |
| allStyles.style(foundry->styles[k]->key, foundry->styles[k]->styleName, true); |
| } |
| } |
| |
| QtFontStyle::Key styleKey(style); |
| QtFontStyle *s = bestStyle(&allStyles, styleKey, style); |
| |
| if (!s) // no styles found? |
| return QGuiApplication::font(); |
| |
| QFont fnt(family, pointSize, s->key.weight); |
| fnt.setStyle((QFont::Style)s->key.style); |
| if (!s->styleName.isEmpty()) |
| fnt.setStyleName(s->styleName); |
| return fnt; |
| } |
| |
| |
| /*! |
| Returns the point sizes of a font that has family \a family and |
| style \a styleName that will look attractive. The list may be empty. |
| For non-scalable fonts and bitmap scalable fonts, this function |
| is equivalent to pointSizes(). |
| |
| \sa pointSizes(), standardSizes() |
| */ |
| QList<int> QFontDatabase::smoothSizes(const QString &family, |
| const QString &styleName) |
| { |
| if (QGuiApplicationPrivate::platformIntegration()->fontDatabase()->fontsAlwaysScalable()) |
| return standardSizes(); |
| |
| bool smoothScalable = false; |
| QString familyName, foundryName; |
| parseFontName(family, foundryName, familyName); |
| |
| QMutexLocker locker(fontDatabaseMutex()); |
| |
| QT_PREPEND_NAMESPACE(load)(familyName); |
| |
| QList<int> sizes; |
| |
| QtFontFamily *fam = d->family(familyName); |
| if (!fam) |
| return sizes; |
| |
| const int dpi = qt_defaultDpiY(); // embedded |
| |
| QtFontStyle::Key styleKey(styleName); |
| for (int j = 0; j < fam->count; j++) { |
| QtFontFoundry *foundry = fam->foundries[j]; |
| if (foundryName.isEmpty() || foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { |
| QtFontStyle *style = foundry->style(styleKey, styleName); |
| if (!style) continue; |
| |
| if (style->smoothScalable) { |
| smoothScalable = true; |
| goto end; |
| } |
| for (int l = 0; l < style->count; l++) { |
| const QtFontSize *size = style->pixelSizes + l; |
| |
| if (size->pixelSize != 0 && size->pixelSize != SMOOTH_SCALABLE) { |
| const uint pointSize = qRound(size->pixelSize * 72.0 / dpi); |
| if (! sizes.contains(pointSize)) |
| sizes.append(pointSize); |
| } |
| } |
| } |
| } |
| end: |
| if (smoothScalable) |
| return QFontDatabase::standardSizes(); |
| |
| std::sort(sizes.begin(), sizes.end()); |
| return sizes; |
| } |
| |
| |
| /*! |
| Returns a list of standard font sizes. |
| |
| \sa smoothSizes(), pointSizes() |
| */ |
| QList<int> QFontDatabase::standardSizes() |
| { |
| return QGuiApplicationPrivate::platformIntegration()->fontDatabase()->standardSizes(); |
| } |
| |
| |
| /*! |
| Returns \c true if the font that has family \a family and style \a |
| style is italic; otherwise returns \c false. |
| |
| \sa weight(), bold() |
| */ |
| bool QFontDatabase::italic(const QString &family, const QString &style) const |
| { |
| QString familyName, foundryName; |
| parseFontName(family, foundryName, familyName); |
| |
| QMutexLocker locker(fontDatabaseMutex()); |
| |
| QT_PREPEND_NAMESPACE(load)(familyName); |
| |
| QtFontFoundry allStyles(foundryName); |
| QtFontFamily *f = d->family(familyName); |
| if (!f) return false; |
| |
| for (int j = 0; j < f->count; j++) { |
| QtFontFoundry *foundry = f->foundries[j]; |
| if (foundryName.isEmpty() || foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { |
| for (int k = 0; k < foundry->count; k++) |
| allStyles.style(foundry->styles[k]->key, foundry->styles[k]->styleName, true); |
| } |
| } |
| |
| QtFontStyle::Key styleKey(style); |
| QtFontStyle *s = allStyles.style(styleKey, style); |
| return s && s->key.style == QFont::StyleItalic; |
| } |
| |
| |
| /*! |
| Returns \c true if the font that has family \a family and style \a |
| style is bold; otherwise returns \c false. |
| |
| \sa italic(), weight() |
| */ |
| bool QFontDatabase::bold(const QString &family, |
| const QString &style) const |
| { |
| QString familyName, foundryName; |
| parseFontName(family, foundryName, familyName); |
| |
| QMutexLocker locker(fontDatabaseMutex()); |
| |
| QT_PREPEND_NAMESPACE(load)(familyName); |
| |
| QtFontFoundry allStyles(foundryName); |
| QtFontFamily *f = d->family(familyName); |
| if (!f) return false; |
| |
| for (int j = 0; j < f->count; j++) { |
| QtFontFoundry *foundry = f->foundries[j]; |
| if (foundryName.isEmpty() || |
| foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { |
| for (int k = 0; k < foundry->count; k++) |
| allStyles.style(foundry->styles[k]->key, foundry->styles[k]->styleName, true); |
| } |
| } |
| |
| QtFontStyle::Key styleKey(style); |
| QtFontStyle *s = allStyles.style(styleKey, style); |
| return s && s->key.weight >= QFont::Bold; |
| } |
| |
| |
| /*! |
| Returns the weight of the font that has family \a family and style |
| \a style. If there is no such family and style combination, |
| returns -1. |
| |
| \sa italic(), bold() |
| */ |
| int QFontDatabase::weight(const QString &family, |
| const QString &style) const |
| { |
| QString familyName, foundryName; |
| parseFontName(family, foundryName, familyName); |
| |
| QMutexLocker locker(fontDatabaseMutex()); |
| |
| QT_PREPEND_NAMESPACE(load)(familyName); |
| |
| QtFontFoundry allStyles(foundryName); |
| QtFontFamily *f = d->family(familyName); |
| if (!f) return -1; |
| |
| for (int j = 0; j < f->count; j++) { |
| QtFontFoundry *foundry = f->foundries[j]; |
| if (foundryName.isEmpty() || |
| foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { |
| for (int k = 0; k < foundry->count; k++) |
| allStyles.style(foundry->styles[k]->key, foundry->styles[k]->styleName, true); |
| } |
| } |
| |
| QtFontStyle::Key styleKey(style); |
| QtFontStyle *s = allStyles.style(styleKey, style); |
| return s ? s->key.weight : -1; |
| } |
| |
| |
| /*! \internal */ |
| bool QFontDatabase::hasFamily(const QString &family) const |
| { |
| QString parsedFamily, foundry; |
| parseFontName(family, foundry, parsedFamily); |
| const QString familyAlias = resolveFontFamilyAlias(parsedFamily); |
| return families().contains(familyAlias, Qt::CaseInsensitive); |
| } |
| |
| |
| /*! |
| \since 5.5 |
| |
| Returns \c true if and only if the \a family font family is private. |
| |
| This happens, for instance, on \macos and iOS, where the system UI fonts are not |
| accessible to the user. For completeness, QFontDatabase::families() returns all |
| font families, including the private ones. You should use this function if you |
| are developing a font selection control in order to keep private fonts hidden. |
| |
| \sa families() |
| */ |
| bool QFontDatabase::isPrivateFamily(const QString &family) const |
| { |
| return QGuiApplicationPrivate::platformIntegration()->fontDatabase()->isPrivateFontFamily(family); |
| } |
| |
| |
| /*! |
| Returns the names the \a writingSystem (e.g. for displaying to the |
| user in a dialog). |
| */ |
| QString QFontDatabase::writingSystemName(WritingSystem writingSystem) |
| { |
| const char *name = nullptr; |
| switch (writingSystem) { |
| case Any: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Any"); |
| break; |
| case Latin: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Latin"); |
| break; |
| case Greek: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Greek"); |
| break; |
| case Cyrillic: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Cyrillic"); |
| break; |
| case Armenian: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Armenian"); |
| break; |
| case Hebrew: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Hebrew"); |
| break; |
| case Arabic: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Arabic"); |
| break; |
| case Syriac: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Syriac"); |
| break; |
| case Thaana: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Thaana"); |
| break; |
| case Devanagari: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Devanagari"); |
| break; |
| case Bengali: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Bengali"); |
| break; |
| case Gurmukhi: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Gurmukhi"); |
| break; |
| case Gujarati: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Gujarati"); |
| break; |
| case Oriya: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Oriya"); |
| break; |
| case Tamil: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Tamil"); |
| break; |
| case Telugu: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Telugu"); |
| break; |
| case Kannada: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Kannada"); |
| break; |
| case Malayalam: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Malayalam"); |
| break; |
| case Sinhala: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Sinhala"); |
| break; |
| case Thai: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Thai"); |
| break; |
| case Lao: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Lao"); |
| break; |
| case Tibetan: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Tibetan"); |
| break; |
| case Myanmar: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Myanmar"); |
| break; |
| case Georgian: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Georgian"); |
| break; |
| case Khmer: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Khmer"); |
| break; |
| case SimplifiedChinese: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Simplified Chinese"); |
| break; |
| case TraditionalChinese: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Traditional Chinese"); |
| break; |
| case Japanese: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Japanese"); |
| break; |
| case Korean: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Korean"); |
| break; |
| case Vietnamese: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Vietnamese"); |
| break; |
| case Symbol: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Symbol"); |
| break; |
| case Ogham: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Ogham"); |
| break; |
| case Runic: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "Runic"); |
| break; |
| case Nko: |
| name = QT_TRANSLATE_NOOP("QFontDatabase", "N'Ko"); |
| break; |
| default: |
| Q_ASSERT_X(false, "QFontDatabase::writingSystemName", "invalid 'writingSystem' parameter"); |
| break; |
| } |
| return QCoreApplication::translate("QFontDatabase", name); |
| } |
| |
| |
| /*! |
| Returns a string with sample characters from \a writingSystem. |
| */ |
| QString QFontDatabase::writingSystemSample(WritingSystem writingSystem) |
| { |
| QString sample; |
| switch (writingSystem) { |
| case Any: |
| case Symbol: |
| // show only ascii characters |
| sample += QLatin1String("AaBbzZ"); |
| break; |
| case Latin: |
| // This is cheating... we only show latin-1 characters so that we don't |
| // end up loading lots of fonts - at least on X11... |
| sample = QLatin1String("Aa"); |
| sample += QChar(0x00C3); |
| sample += QChar(0x00E1); |
| sample += QLatin1String("Zz"); |
| break; |
| case Greek: |
| sample += QChar(0x0393); |
| sample += QChar(0x03B1); |
| sample += QChar(0x03A9); |
| sample += QChar(0x03C9); |
| break; |
| case Cyrillic: |
| sample += QChar(0x0414); |
| sample += QChar(0x0434); |
| sample += QChar(0x0436); |
| sample += QChar(0x044f); |
| break; |
| case Armenian: |
| sample += QChar(0x053f); |
| sample += QChar(0x054f); |
| sample += QChar(0x056f); |
| sample += QChar(0x057f); |
| break; |
| case Hebrew: |
| sample += QChar(0x05D0); |
| sample += QChar(0x05D1); |
| sample += QChar(0x05D2); |
| sample += QChar(0x05D3); |
| break; |
| case Arabic: |
| sample += QChar(0x0623); |
| sample += QChar(0x0628); |
| sample += QChar(0x062C); |
| sample += QChar(0x062F); |
| sample += QChar(0x064A); |
| sample += QChar(0x0629); |
| sample += QChar(0x0020); |
| sample += QChar(0x0639); |
| sample += QChar(0x0631); |
| sample += QChar(0x0628); |
| sample += QChar(0x064A); |
| sample += QChar(0x0629); |
| break; |
| case Syriac: |
| sample += QChar(0x0715); |
| sample += QChar(0x0725); |
| sample += QChar(0x0716); |
| sample += QChar(0x0726); |
| break; |
| case Thaana: |
| sample += QChar(0x0784); |
| sample += QChar(0x0794); |
| sample += QChar(0x078c); |
| sample += QChar(0x078d); |
| break; |
| case Devanagari: |
| sample += QChar(0x0905); |
| sample += QChar(0x0915); |
| sample += QChar(0x0925); |
| sample += QChar(0x0935); |
| break; |
| case Bengali: |
| sample += QChar(0x0986); |
| sample += QChar(0x0996); |
| sample += QChar(0x09a6); |
| sample += QChar(0x09b6); |
| break; |
| case Gurmukhi: |
| sample += QChar(0x0a05); |
| sample += QChar(0x0a15); |
| sample += QChar(0x0a25); |
| sample += QChar(0x0a35); |
| break; |
| case Gujarati: |
| sample += QChar(0x0a85); |
| sample += QChar(0x0a95); |
| sample += QChar(0x0aa5); |
| sample += QChar(0x0ab5); |
| break; |
| case Oriya: |
| sample += QChar(0x0b06); |
| sample += QChar(0x0b16); |
| sample += QChar(0x0b2b); |
| sample += QChar(0x0b36); |
| break; |
| case Tamil: |
| sample += QChar(0x0b89); |
| sample += QChar(0x0b99); |
| sample += QChar(0x0ba9); |
| sample += QChar(0x0bb9); |
| break; |
| case Telugu: |
| sample += QChar(0x0c05); |
| sample += QChar(0x0c15); |
| sample += QChar(0x0c25); |
| sample += QChar(0x0c35); |
| break; |
| case Kannada: |
| sample += QChar(0x0c85); |
| sample += QChar(0x0c95); |
| sample += QChar(0x0ca5); |
| sample += QChar(0x0cb5); |
| break; |
| case Malayalam: |
| sample += QChar(0x0d05); |
| sample += QChar(0x0d15); |
| sample += QChar(0x0d25); |
| sample += QChar(0x0d35); |
| break; |
| case Sinhala: |
| sample += QChar(0x0d90); |
| sample += QChar(0x0da0); |
| sample += QChar(0x0db0); |
| sample += QChar(0x0dc0); |
| break; |
| case Thai: |
| sample += QChar(0x0e02); |
| sample += QChar(0x0e12); |
| sample += QChar(0x0e22); |
| sample += QChar(0x0e32); |
| break; |
| case Lao: |
| sample += QChar(0x0e8d); |
| sample += QChar(0x0e9d); |
| sample += QChar(0x0ead); |
| sample += QChar(0x0ebd); |
| break; |
| case Tibetan: |
| sample += QChar(0x0f00); |
| sample += QChar(0x0f01); |
| sample += QChar(0x0f02); |
| sample += QChar(0x0f03); |
| break; |
| case Myanmar: |
| sample += QChar(0x1000); |
| sample += QChar(0x1001); |
| sample += QChar(0x1002); |
| sample += QChar(0x1003); |
| break; |
| case Georgian: |
| sample += QChar(0x10a0); |
| sample += QChar(0x10b0); |
| sample += QChar(0x10c0); |
| sample += QChar(0x10d0); |
| break; |
| case Khmer: |
| sample += QChar(0x1780); |
| sample += QChar(0x1790); |
| sample += QChar(0x17b0); |
| sample += QChar(0x17c0); |
| break; |
| case SimplifiedChinese: |
| sample += QChar(0x4e2d); |
| sample += QChar(0x6587); |
| sample += QChar(0x8303); |
| sample += QChar(0x4f8b); |
| break; |
| case TraditionalChinese: |
| sample += QChar(0x4e2d); |
| sample += QChar(0x6587); |
| sample += QChar(0x7bc4); |
| sample += QChar(0x4f8b); |
| break; |
| case Japanese: |
| sample += QChar(0x30b5); |
| sample += QChar(0x30f3); |
| sample += QChar(0x30d7); |
| sample += QChar(0x30eb); |
| sample += QChar(0x3067); |
| sample += QChar(0x3059); |
| break; |
| case Korean: |
| sample += QChar(0xac00); |
| sample += QChar(0xac11); |
| sample += QChar(0xac1a); |
| sample += QChar(0xac2f); |
| break; |
| case Vietnamese: |
| { |
| static const char vietnameseUtf8[] = { |
| char(0xef), char(0xbb), char(0xbf), char(0xe1), char(0xbb), char(0x97), |
| char(0xe1), char(0xbb), char(0x99), |
| char(0xe1), char(0xbb), char(0x91), |
| char(0xe1), char(0xbb), char(0x93), |
| }; |
| sample += QString::fromUtf8(vietnameseUtf8, sizeof(vietnameseUtf8)); |
| break; |
| } |
| case Ogham: |
| sample += QChar(0x1681); |
| sample += QChar(0x1682); |
| sample += QChar(0x1683); |
| sample += QChar(0x1684); |
| break; |
| case Runic: |
| sample += QChar(0x16a0); |
| sample += QChar(0x16a1); |
| sample += QChar(0x16a2); |
| sample += QChar(0x16a3); |
| break; |
| case Nko: |
| sample += QChar(0x7ca); |
| sample += QChar(0x7cb); |
| sample += QChar(0x7cc); |
| sample += QChar(0x7cd); |
| break; |
| default: |
| break; |
| } |
| return sample; |
| } |
| |
| |
| void QFontDatabase::parseFontName(const QString &name, QString &foundry, QString &family) |
| { |
| QT_PREPEND_NAMESPACE(parseFontName)(name, foundry, family); |
| } |
| |
| void QFontDatabase::createDatabase() |
| { initializeDb(); } |
| |
| // used from qfontengine_ft.cpp |
| Q_GUI_EXPORT QByteArray qt_fontdata_from_index(int index) |
| { |
| QMutexLocker locker(fontDatabaseMutex()); |
| return privateDb()->applicationFonts.value(index).data; |
| } |
| |
| int QFontDatabasePrivate::addAppFont(const QByteArray &fontData, const QString &fileName) |
| { |
| QFontDatabasePrivate::ApplicationFont font; |
| font.data = fontData; |
| font.fileName = fileName; |
| |
| Q_TRACE(QFontDatabasePrivate_addAppFont, fileName); |
| |
| int i; |
| for (i = 0; i < applicationFonts.count(); ++i) |
| if (applicationFonts.at(i).families.isEmpty()) |
| break; |
| if (i >= applicationFonts.count()) { |
| applicationFonts.append(ApplicationFont()); |
| i = applicationFonts.count() - 1; |
| } |
| |
| if (font.fileName.isEmpty() && !fontData.isEmpty()) |
| font.fileName = QLatin1String(":qmemoryfonts/") + QString::number(i); |
| |
| bool wasEmpty = privateDb()->count == 0; |
| registerFont(&font); |
| if (font.families.isEmpty()) |
| return -1; |
| |
| applicationFonts[i] = font; |
| |
| // If the cache has not yet been populated, we need to reload the application font later |
| if (wasEmpty) |
| invalidate(); |
| else |
| emit qApp->fontDatabaseChanged(); |
| return i; |
| } |
| |
| bool QFontDatabasePrivate::isApplicationFont(const QString &fileName) |
| { |
| for (int i = 0; i < applicationFonts.count(); ++i) |
| if (applicationFonts.at(i).fileName == fileName) |
| return true; |
| return false; |
| } |
| |
| /*! |
| \since 4.2 |
| |
| Loads the font from the file specified by \a fileName and makes it available to |
| the application. An ID is returned that can be used to remove the font again |
| with removeApplicationFont() or to retrieve the list of family names contained |
| in the font. |
| |
| The function returns -1 if the font could not be loaded. |
| |
| Currently only TrueType fonts, TrueType font collections, and OpenType fonts are |
| supported. |
| |
| \note Adding application fonts on Unix/X11 platforms without fontconfig is |
| currently not supported. |
| |
| \sa addApplicationFontFromData(), applicationFontFamilies(), removeApplicationFont() |
| */ |
| int QFontDatabase::addApplicationFont(const QString &fileName) |
| { |
| QByteArray data; |
| if (!QFileInfo(fileName).isNativePath()) { |
| QFile f(fileName); |
| if (!f.open(QIODevice::ReadOnly)) |
| return -1; |
| |
| Q_TRACE(QFontDatabase_addApplicationFont, fileName); |
| |
| data = f.readAll(); |
| } |
| QMutexLocker locker(fontDatabaseMutex()); |
| return privateDb()->addAppFont(data, fileName); |
| } |
| |
| /*! |
| \since 4.2 |
| |
| Loads the font from binary data specified by \a fontData and makes it available to |
| the application. An ID is returned that can be used to remove the font again |
| with removeApplicationFont() or to retrieve the list of family names contained |
| in the font. |
| |
| The function returns -1 if the font could not be loaded. |
| |
| Currently only TrueType fonts and TrueType font collections are supported. |
| |
| \b{Note:} Adding application fonts on Unix/X11 platforms without fontconfig is |
| currently not supported. |
| |
| \sa addApplicationFont(), applicationFontFamilies(), removeApplicationFont() |
| */ |
| int QFontDatabase::addApplicationFontFromData(const QByteArray &fontData) |
| { |
| QMutexLocker locker(fontDatabaseMutex()); |
| return privateDb()->addAppFont(fontData, QString() /* fileName */); |
| } |
| |
| /*! |
| \since 4.2 |
| |
| Returns a list of font families for the given application font identified by |
| \a id. |
| |
| \sa addApplicationFont(), addApplicationFontFromData() |
| */ |
| QStringList QFontDatabase::applicationFontFamilies(int id) |
| { |
| QMutexLocker locker(fontDatabaseMutex()); |
| return privateDb()->applicationFonts.value(id).families; |
| } |
| |
| /*! |
| \since 5.2 |
| |
| Returns the most adequate font for a given \a type case for proper integration |
| with the system's look and feel. |
| |
| \sa QGuiApplication::font() |
| */ |
| |
| QFont QFontDatabase::systemFont(QFontDatabase::SystemFont type) |
| { |
| const QFont *font = nullptr; |
| if (const QPlatformTheme *theme = QGuiApplicationPrivate::platformTheme()) { |
| switch (type) { |
| case GeneralFont: |
| font = theme->font(QPlatformTheme::SystemFont); |
| break; |
| case FixedFont: |
| font = theme->font(QPlatformTheme::FixedFont); |
| break; |
| case TitleFont: |
| font = theme->font(QPlatformTheme::TitleBarFont); |
| break; |
| case SmallestReadableFont: |
| font = theme->font(QPlatformTheme::MiniFont); |
| break; |
| } |
| } |
| |
| if (font) |
| return *font; |
| else if (QPlatformIntegration *integration = QGuiApplicationPrivate::platformIntegration()) |
| return integration->fontDatabase()->defaultFont(); |
| else |
| return QFont(); |
| } |
| |
| /*! |
| \fn bool QFontDatabase::removeApplicationFont(int id) |
| \since 4.2 |
| |
| Removes the previously loaded application font identified by \a |
| id. Returns \c true if unloading of the font succeeded; otherwise |
| returns \c false. |
| |
| \sa removeAllApplicationFonts(), addApplicationFont(), |
| addApplicationFontFromData() |
| */ |
| 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->invalidate(); |
| return true; |
| } |
| |
| /*! |
| \fn bool QFontDatabase::removeAllApplicationFonts() |
| \since 4.2 |
| |
| Removes all application-local fonts previously added using addApplicationFont() |
| and addApplicationFontFromData(). |
| |
| Returns \c true if unloading of the fonts succeeded; otherwise |
| returns \c false. |
| |
| \sa removeApplicationFont(), addApplicationFont(), addApplicationFontFromData() |
| */ |
| bool QFontDatabase::removeAllApplicationFonts() |
| { |
| QMutexLocker locker(fontDatabaseMutex()); |
| |
| QFontDatabasePrivate *db = privateDb(); |
| if (!db || db->applicationFonts.isEmpty()) |
| return false; |
| |
| db->applicationFonts.clear(); |
| db->invalidate(); |
| return true; |
| } |
| |
| /*! |
| \fn bool QFontDatabase::supportsThreadedFontRendering() |
| \since 4.4 |
| \deprecated |
| |
| Returns \c true if font rendering is supported outside the GUI |
| thread, false otherwise. In other words, a return value of false |
| means that all QPainter::drawText() calls outside the GUI thread |
| will not produce readable output. |
| |
| As of 5.0, always returns \c true. |
| |
| \sa {Thread-Support in Qt Modules#Painting In Threads}{Painting In Threads} |
| */ |
| #if QT_DEPRECATED_SINCE(5, 2) |
| bool QFontDatabase::supportsThreadedFontRendering() |
| { |
| return true; |
| } |
| #endif |
| |
| /*! |
| \internal |
| */ |
| QFontEngine *QFontDatabase::findFont(const QFontDef &request, int script) |
| { |
| QMutexLocker locker(fontDatabaseMutex()); |
| |
| if (!privateDb()->count) |
| initializeDb(); |
| |
| QFontEngine *engine; |
| |
| #if defined(QT_BUILD_INTERNAL) |
| // For testing purpose only, emulates an exact-matching monospace font |
| if (qt_enable_test_font && request.family == QLatin1String("__Qt__Box__Engine__")) { |
| engine = new QTestFontEngine(request.pixelSize); |
| engine->fontDef = request; |
| return engine; |
| } |
| #endif |
| |
| QFontCache *fontCache = QFontCache::instance(); |
| |
| // Until we specifically asked not to, try looking for Multi font engine |
| // first, the last '1' indicates that we want Multi font engine instead |
| // of single ones |
| bool multi = !(request.styleStrategy & QFont::NoFontMerging); |
| QFontCache::Key key(request, script, multi ? 1 : 0); |
| engine = fontCache->findEngine(key); |
| if (engine) { |
| qCDebug(lcFontMatch, "Cache hit level 1"); |
| return engine; |
| } |
| |
| QString family_name, foundry_name; |
| const QString requestFamily = request.families.size() > 0 ? request.families.at(0) : request.family; |
| parseFontName(requestFamily, foundry_name, family_name); |
| QtFontDesc desc; |
| QList<int> blackListed; |
| int index = match(multi ? QChar::Script_Common : script, request, family_name, foundry_name, &desc, blackListed); |
| if (index < 0 && QGuiApplicationPrivate::platformIntegration()->fontDatabase()->populateFamilyAliases(family_name)) { |
| // We populated familiy aliases (e.g. localized families), so try again |
| index = match(multi ? QChar::Script_Common : script, request, family_name, foundry_name, &desc, blackListed); |
| } |
| if (index >= 0) { |
| QFontDef fontDef = request; |
| |
| // Don't pass empty family names to the platform font database, since it will then invoke its own matching |
| // and we will be out of sync with the matched font. |
| if (fontDef.families.isEmpty() && fontDef.family.isEmpty()) |
| fontDef.families = QStringList(desc.family->name); |
| |
| engine = loadEngine(script, fontDef, desc.family, desc.foundry, desc.style, desc.size); |
| |
| if (engine) |
| initFontDef(desc, request, &engine->fontDef, multi); |
| else |
| blackListed.append(index); |
| } else { |
| qCDebug(lcFontMatch, " NO MATCH FOUND\n"); |
| } |
| |
| if (!engine) { |
| if (!requestFamily.isEmpty()) { |
| QFont::StyleHint styleHint = QFont::StyleHint(request.styleHint); |
| if (styleHint == QFont::AnyStyle && request.fixedPitch) |
| styleHint = QFont::TypeWriter; |
| |
| QStringList fallbacks = request.fallBackFamilies |
| + fallbacksForFamily(requestFamily, |
| QFont::Style(request.style), |
| styleHint, |
| QChar::Script(script)); |
| if (script > QChar::Script_Common) |
| fallbacks += QString(); // Find the first font matching the specified script. |
| |
| for (int i = 0; !engine && i < fallbacks.size(); i++) { |
| QFontDef def = request; |
| def.family = fallbacks.at(i); |
| QFontCache::Key key(def, script, multi ? 1 : 0); |
| engine = fontCache->findEngine(key); |
| if (!engine) { |
| QtFontDesc desc; |
| do { |
| index = match(multi ? QChar::Script_Common : script, def, def.family, QLatin1String(""), &desc, blackListed); |
| if (index >= 0) { |
| QFontDef loadDef = def; |
| if (loadDef.families.isEmpty() && loadDef.family.isEmpty()) |
| loadDef.family = desc.family->name; |
| engine = loadEngine(script, loadDef, desc.family, desc.foundry, desc.style, desc.size); |
| if (engine) |
| initFontDef(desc, loadDef, &engine->fontDef, multi); |
| else |
| blackListed.append(index); |
| } |
| } while (index >= 0 && !engine); |
| } |
| } |
| } |
| |
| if (!engine) |
| engine = new QFontEngineBox(request.pixelSize); |
| |
| qCDebug(lcFontMatch, "returning box engine"); |
| } |
| |
| return engine; |
| } |
| |
| void QFontDatabase::load(const QFontPrivate *d, int script) |
| { |
| QFontDef req = d->request; |
| |
| if (req.pixelSize == -1) { |
| req.pixelSize = std::floor(((req.pointSize * d->dpi) / 72) * 100 + 0.5) / 100; |
| req.pixelSize = qRound(req.pixelSize); |
| } |
| if (req.pointSize < 0) |
| req.pointSize = req.pixelSize*72.0/d->dpi; |
| |
| // respect the fallback families that might be passed through the request |
| const QStringList fallBackFamilies = familyList(req); |
| |
| if (!d->engineData) { |
| QFontCache *fontCache = QFontCache::instance(); |
| // look for the requested font in the engine data cache |
| // note: fallBackFamilies are not respected in the EngineData cache key; |
| // join them with the primary selection family to avoid cache misses |
| if (!d->request.family.isEmpty()) |
| req.family = fallBackFamilies.join(QLatin1Char(',')); |
| if (!d->request.families.isEmpty()) |
| req.families = fallBackFamilies; |
| |
| d->engineData = fontCache->findEngineData(req); |
| if (!d->engineData) { |
| // create a new one |
| d->engineData = new QFontEngineData; |
| fontCache->insertEngineData(req, d->engineData); |
| } |
| d->engineData->ref.ref(); |
| } |
| |
| // the cached engineData could have already loaded the engine we want |
| if (d->engineData->engines[script]) |
| return; |
| |
| QFontEngine *fe = nullptr; |
| |
| Q_TRACE(QFontDatabase_load, req.family, req.pointSize); |
| |
| req.fallBackFamilies = fallBackFamilies; |
| if (!req.fallBackFamilies.isEmpty()) |
| req.families = QStringList(req.fallBackFamilies.takeFirst()); |
| |
| // list of families to try |
| QStringList family_list; |
| |
| if (!req.families.isEmpty()) { |
| // Add primary selection |
| family_list << req.families.at(0); |
| |
| // add the default family |
| QString defaultFamily = QGuiApplication::font().family(); |
| if (! family_list.contains(defaultFamily)) |
| family_list << defaultFamily; |
| |
| } |
| |
| // null family means find the first font matching the specified script |
| family_list << QString(); |
| |
| QStringList::ConstIterator it = family_list.constBegin(), end = family_list.constEnd(); |
| for (; !fe && it != end; ++it) { |
| req.families = QStringList(*it); |
| |
| fe = QFontDatabase::findFont(req, script); |
| if (fe) { |
| if (fe->type() == QFontEngine::Box && !req.families.at(0).isEmpty()) { |
| if (fe->ref.loadRelaxed() == 0) |
| delete fe; |
| fe = nullptr; |
| } else { |
| if (d->dpi > 0) |
| fe->fontDef.pointSize = qreal(double((fe->fontDef.pixelSize * 72) / d->dpi)); |
| } |
| } |
| |
| // No need to check requested fallback families again |
| req.fallBackFamilies.clear(); |
| } |
| |
| Q_ASSERT(fe); |
| if (fe->symbol || (d->request.styleStrategy & QFont::NoFontMerging)) { |
| for (int i = 0; i < QChar::ScriptCount; ++i) { |
| if (!d->engineData->engines[i]) { |
| d->engineData->engines[i] = fe; |
| fe->ref.ref(); |
| } |
| } |
| } else { |
| d->engineData->engines[script] = fe; |
| fe->ref.ref(); |
| } |
| } |
| |
| QString QFontDatabase::resolveFontFamilyAlias(const QString &family) |
| { |
| return QGuiApplicationPrivate::platformIntegration()->fontDatabase()->resolveFontFamilyAlias(family); |
| } |
| |
| Q_GUI_EXPORT QStringList qt_sort_families_by_writing_system(QChar::Script script, const QStringList &families) |
| { |
| size_t writingSystem = std::find(scriptForWritingSystem, |
| scriptForWritingSystem + QFontDatabase::WritingSystemsCount, |
| script) - scriptForWritingSystem; |
| if (writingSystem == QFontDatabase::Any |
| || writingSystem >= QFontDatabase::WritingSystemsCount) { |
| return families; |
| } |
| |
| QFontDatabasePrivate *db = privateDb(); |
| QMultiMap<uint, QString> supported; |
| for (int i = 0; i < families.size(); ++i) { |
| const QString &family = families.at(i); |
| |
| QtFontFamily *testFamily = nullptr; |
| for (int x = 0; x < db->count; ++x) { |
| if (Q_UNLIKELY(matchFamilyName(family, db->families[x]))) { |
| testFamily = db->families[x]; |
| testFamily->ensurePopulated(); |
| break; |
| } |
| } |
| |
| uint order = i; |
| if (testFamily == nullptr |
| || (testFamily->writingSystems[writingSystem] & QtFontFamily::Supported) == 0) { |
| order |= 1u << 31; |
| } |
| |
| supported.insert(order, family); |
| } |
| |
| return supported.values(); |
| } |
| |
| QT_END_NAMESPACE |
| |