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-rw-r--r--src/gui/text/freetype/qfreetypefontdatabase.cpp207
1 files changed, 157 insertions, 50 deletions
diff --git a/src/gui/text/freetype/qfreetypefontdatabase.cpp b/src/gui/text/freetype/qfreetypefontdatabase.cpp
index 21be28dba4..018e590ac2 100644
--- a/src/gui/text/freetype/qfreetypefontdatabase.cpp
+++ b/src/gui/text/freetype/qfreetypefontdatabase.cpp
@@ -1,41 +1,5 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the plugins of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** 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
-** ensure the GNU Lesser General Public License version 3 requirements
-** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
-**
-** 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
-** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
-** included in the packaging of this file. Please review the following
-** information to ensure the GNU General Public License requirements will
-** be met: https://www.gnu.org/licenses/gpl-2.0.html and
-** https://www.gnu.org/licenses/gpl-3.0.html.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qfreetypefontdatabase_p.h"
@@ -46,6 +10,8 @@
#include <QtCore/QLibraryInfo>
#include <QtCore/QDir>
#include <QtCore/QtEndian>
+#include <QtCore/QLoggingCategory>
+#include <QtCore/QUuid>
#undef QT_NO_FREETYPE
#include "qfontengine_ft_p.h"
@@ -54,8 +20,16 @@
#include FT_TRUETYPE_TABLES_H
#include FT_ERRORS_H
+#include FT_MULTIPLE_MASTERS_H
+#include FT_SFNT_NAMES_H
+#include FT_TRUETYPE_IDS_H
+
QT_BEGIN_NAMESPACE
+Q_DECLARE_LOGGING_CATEGORY(lcFontDb)
+
+using namespace Qt::StringLiterals;
+
void QFreeTypeFontDatabase::populateFontDatabase()
{
QString fontpath = fontDir();
@@ -68,14 +42,14 @@ void QFreeTypeFontDatabase::populateFontDatabase()
return;
}
- QStringList nameFilters;
- nameFilters << QLatin1String("*.ttf")
- << QLatin1String("*.ttc")
- << QLatin1String("*.pfa")
- << QLatin1String("*.pfb")
- << QLatin1String("*.otf");
+ static const QString nameFilters[] = {
+ u"*.ttf"_s,
+ u"*.pfa"_s,
+ u"*.pfb"_s,
+ u"*.otf"_s,
+ };
- const auto fis = dir.entryInfoList(nameFilters, QDir::Files);
+ const auto fis = dir.entryInfoList(QStringList::fromReadOnlyData(nameFilters), QDir::Files);
for (const QFileInfo &fi : fis) {
const QByteArray file = QFile::encodeName(fi.absoluteFilePath());
QFreeTypeFontDatabase::addTTFile(QByteArray(), file);
@@ -88,14 +62,24 @@ QFontEngine *QFreeTypeFontDatabase::fontEngine(const QFontDef &fontDef, void *us
QFontEngine::FaceId faceId;
faceId.filename = QFile::encodeName(fontfile->fileName);
faceId.index = fontfile->indexValue;
+ faceId.instanceIndex = fontfile->instanceIndex;
+ faceId.variableAxes = fontDef.variableAxisValues;
+
+ // Make sure the FaceId compares uniquely in cases where a
+ // file name is not provided.
+ if (faceId.filename.isEmpty()) {
+ QUuid::Id128Bytes id{};
+ memcpy(&id, &usrPtr, sizeof(usrPtr));
+ faceId.uuid = QUuid(id).toByteArray();
+ }
- return QFontEngineFT::create(fontDef, faceId);
+ return QFontEngineFT::create(fontDef, faceId, fontfile->data);
}
QFontEngine *QFreeTypeFontDatabase::fontEngine(const QByteArray &fontData, qreal pixelSize,
QFont::HintingPreference hintingPreference)
{
- return QFontEngineFT::create(fontData, pixelSize, hintingPreference);
+ return QFontEngineFT::create(fontData, pixelSize, hintingPreference, {});
}
QStringList QFreeTypeFontDatabase::addApplicationFont(const QByteArray &fontData, const QString &fileName, QFontDatabasePrivate::ApplicationFont *applicationFont)
@@ -111,6 +95,114 @@ void QFreeTypeFontDatabase::releaseHandle(void *handle)
extern FT_Library qt_getFreetype();
+void QFreeTypeFontDatabase::addNamedInstancesForFace(void *face_,
+ int faceIndex,
+ const QString &family,
+ const QString &styleName,
+ QFont::Weight weight,
+ QFont::Stretch stretch,
+ QFont::Style style,
+ bool fixedPitch,
+ const QSupportedWritingSystems &writingSystems,
+ const QByteArray &fileName,
+ const QByteArray &fontData)
+{
+ FT_Face face = reinterpret_cast<FT_Face>(face_);
+
+ // Note: The following does not actually depend on API from 2.9, but the
+ // FT_Set_Named_Instance() was added in 2.9, so to avoid populating the database with
+ // named instances that cannot be selected, we disable the feature on older Freetype
+ // versions.
+#if (FREETYPE_MAJOR*10000 + FREETYPE_MINOR*100 + FREETYPE_PATCH) >= 20900
+ FT_MM_Var *var = nullptr;
+ FT_Get_MM_Var(face, &var);
+ if (var != nullptr) {
+ std::unique_ptr<FT_MM_Var, void(*)(FT_MM_Var*)> varGuard(var, [](FT_MM_Var *res) {
+ FT_Done_MM_Var(qt_getFreetype(), res);
+ });
+
+ for (FT_UInt i = 0; i < var->num_namedstyles; ++i) {
+ FT_UInt id = var->namedstyle[i].strid;
+
+ QFont::Weight instanceWeight = weight;
+ QFont::Stretch instanceStretch = stretch;
+ QFont::Style instanceStyle = style;
+ for (FT_UInt axis = 0; axis < var->num_axis; ++axis) {
+ if (var->axis[axis].tag == QFont::Tag("wght").value()) {
+ instanceWeight = QFont::Weight(var->namedstyle[i].coords[axis] >> 16);
+ } else if (var->axis[axis].tag == QFont::Tag("wdth").value()) {
+ instanceStretch = QFont::Stretch(var->namedstyle[i].coords[axis] >> 16);
+ } else if (var->axis[axis].tag == QFont::Tag("ital").value()) {
+ FT_UInt ital = var->namedstyle[i].coords[axis] >> 16;
+ if (ital == 1)
+ instanceStyle = QFont::StyleItalic;
+ else
+ instanceStyle = QFont::StyleNormal;
+ }
+ }
+
+ FT_UInt count = FT_Get_Sfnt_Name_Count(face);
+ for (FT_UInt j = 0; j < count; ++j) {
+ FT_SfntName name;
+ if (FT_Get_Sfnt_Name(face, j, &name))
+ continue;
+
+ if (name.name_id != id)
+ continue;
+
+ // Only support Unicode for now
+ if (name.encoding_id != TT_MS_ID_UNICODE_CS)
+ continue;
+
+ // Sfnt names stored as UTF-16BE
+ QString instanceName;
+ for (FT_UInt k = 0; k < name.string_len; k += 2)
+ instanceName += QChar((name.string[k] << 8) + name.string[k + 1]);
+ if (instanceName != styleName) {
+ FontFile *variantFontFile = new FontFile{
+ QFile::decodeName(fileName),
+ faceIndex,
+ int(i),
+ fontData
+ };
+
+ qCDebug(lcFontDb) << "Registering named instance" << i
+ << ":" << instanceName
+ << "for font family" << family
+ << "with weight" << instanceWeight
+ << ", style" << instanceStyle
+ << ", stretch" << instanceStretch;
+
+ registerFont(family,
+ instanceName,
+ QString(),
+ instanceWeight,
+ instanceStyle,
+ instanceStretch,
+ true,
+ true,
+ 0,
+ fixedPitch,
+ writingSystems,
+ variantFontFile);
+ }
+ }
+ }
+ }
+#else
+ Q_UNUSED(face);
+ Q_UNUSED(family);
+ Q_UNUSED(styleName);
+ Q_UNUSED(weight);
+ Q_UNUSED(stretch);
+ Q_UNUSED(style);
+ Q_UNUSED(fixedPitch);
+ Q_UNUSED(writingSystems);
+ Q_UNUSED(fontData);
+#endif
+
+}
+
QStringList QFreeTypeFontDatabase::addTTFile(const QByteArray &fontData, const QByteArray &file, QFontDatabasePrivate::ApplicationFont *applicationFont)
{
FT_Library library = qt_getFreetype();
@@ -225,9 +317,12 @@ QStringList QFreeTypeFontDatabase::addTTFile(const QByteArray &fontData, const Q
}
QString family = QString::fromLatin1(face->family_name);
- FontFile *fontFile = new FontFile;
- fontFile->fileName = QFile::decodeName(file);
- fontFile->indexValue = index;
+ FontFile *fontFile = new FontFile{
+ QFile::decodeName(file),
+ index,
+ -1,
+ fontData
+ };
QString styleName = QString::fromLatin1(face->style_name);
@@ -243,6 +338,9 @@ QStringList QFreeTypeFontDatabase::addTTFile(const QByteArray &fontData, const Q
}
registerFont(family, styleName, QString(), weight, style, stretch, true, true, 0, fixedPitch, writingSystems, fontFile);
+
+ addNamedInstancesForFace(face, index, family, styleName, weight, stretch, style, fixedPitch, writingSystems, file, fontData);
+
families.append(family);
FT_Done_Face(face);
@@ -251,4 +349,13 @@ QStringList QFreeTypeFontDatabase::addTTFile(const QByteArray &fontData, const Q
return families;
}
+bool QFreeTypeFontDatabase::supportsVariableApplicationFonts() const
+{
+#if (FREETYPE_MAJOR*10000 + FREETYPE_MINOR*100 + FREETYPE_PATCH) >= 20900
+ return true;
+#else
+ return false;
+#endif
+}
+
QT_END_NAMESPACE