diff options
Diffstat (limited to 'src/platformsupport/fontdatabases/freetype/qfreetypefontdatabase.cpp')
| -rw-r--r-- | src/platformsupport/fontdatabases/freetype/qfreetypefontdatabase.cpp | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/src/platformsupport/fontdatabases/freetype/qfreetypefontdatabase.cpp b/src/platformsupport/fontdatabases/freetype/qfreetypefontdatabase.cpp new file mode 100644 index 0000000000..2caa47658a --- /dev/null +++ b/src/platformsupport/fontdatabases/freetype/qfreetypefontdatabase.cpp @@ -0,0 +1,214 @@ +/**************************************************************************** +** +** 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qfreetypefontdatabase_p.h" + +#include <QtGui/private/qguiapplication_p.h> +#include <qpa/qplatformscreen.h> + +#include <QtCore/QFile> +#include <QtCore/QLibraryInfo> +#include <QtCore/QDir> +#include <QtCore/QtEndian> + +#undef QT_NO_FREETYPE +#include <QtFontDatabaseSupport/private/qfontengine_ft_p.h> + +#include <ft2build.h> +#include FT_TRUETYPE_TABLES_H +#include FT_ERRORS_H + +QT_BEGIN_NAMESPACE + +void QFreeTypeFontDatabase::populateFontDatabase() +{ + QString fontpath = fontDir(); + QDir dir(fontpath); + + if (!dir.exists()) { + qWarning("QFontDatabase: Cannot find font directory %s.\n" + "Note that Qt no longer ships fonts. Deploy some (from http://dejavu-fonts.org for example) or switch to fontconfig.", + qPrintable(fontpath)); + return; + } + + QStringList nameFilters; + nameFilters << QLatin1String("*.ttf") + << QLatin1String("*.ttc") + << QLatin1String("*.pfa") + << QLatin1String("*.pfb") + << QLatin1String("*.otf"); + + const auto fis = dir.entryInfoList(nameFilters, QDir::Files); + for (const QFileInfo &fi : fis) { + const QByteArray file = QFile::encodeName(fi.absoluteFilePath()); + QFreeTypeFontDatabase::addTTFile(QByteArray(), file); + } +} + +QFontEngine *QFreeTypeFontDatabase::fontEngine(const QFontDef &fontDef, void *usrPtr) +{ + FontFile *fontfile = static_cast<FontFile *>(usrPtr); + QFontEngine::FaceId faceId; + faceId.filename = QFile::encodeName(fontfile->fileName); + faceId.index = fontfile->indexValue; + + return QFontEngineFT::create(fontDef, faceId); +} + +QFontEngine *QFreeTypeFontDatabase::fontEngine(const QByteArray &fontData, qreal pixelSize, + QFont::HintingPreference hintingPreference) +{ + return QFontEngineFT::create(fontData, pixelSize, hintingPreference); +} + +QStringList QFreeTypeFontDatabase::addApplicationFont(const QByteArray &fontData, const QString &fileName) +{ + return QFreeTypeFontDatabase::addTTFile(fontData, fileName.toLocal8Bit()); +} + +void QFreeTypeFontDatabase::releaseHandle(void *handle) +{ + FontFile *file = static_cast<FontFile *>(handle); + delete file; +} + +extern FT_Library qt_getFreetype(); + +QStringList QFreeTypeFontDatabase::addTTFile(const QByteArray &fontData, const QByteArray &file) +{ + FT_Library library = qt_getFreetype(); + + int index = 0; + int numFaces = 0; + QStringList families; + do { + FT_Face face; + FT_Error error; + if (!fontData.isEmpty()) { + error = FT_New_Memory_Face(library, (const FT_Byte *)fontData.constData(), fontData.size(), index, &face); + } else { + error = FT_New_Face(library, file.constData(), index, &face); + } + if (error != FT_Err_Ok) { + qDebug() << "FT_New_Face failed with index" << index << ':' << hex << error; + break; + } + numFaces = face->num_faces; + + QFont::Weight weight = QFont::Normal; + + QFont::Style style = QFont::StyleNormal; + if (face->style_flags & FT_STYLE_FLAG_ITALIC) + style = QFont::StyleItalic; + + if (face->style_flags & FT_STYLE_FLAG_BOLD) + weight = QFont::Bold; + + bool fixedPitch = (face->face_flags & FT_FACE_FLAG_FIXED_WIDTH); + + QSupportedWritingSystems writingSystems; + // detect symbol fonts + for (int i = 0; i < face->num_charmaps; ++i) { + FT_CharMap cm = face->charmaps[i]; + if (cm->encoding == FT_ENCODING_ADOBE_CUSTOM + || cm->encoding == FT_ENCODING_MS_SYMBOL) { + writingSystems.setSupported(QFontDatabase::Symbol); + break; + } + } + + TT_OS2 *os2 = (TT_OS2 *)FT_Get_Sfnt_Table(face, ft_sfnt_os2); + if (os2) { + quint32 unicodeRange[4] = { + quint32(os2->ulUnicodeRange1), + quint32(os2->ulUnicodeRange2), + quint32(os2->ulUnicodeRange3), + quint32(os2->ulUnicodeRange4) + }; + quint32 codePageRange[2] = { + quint32(os2->ulCodePageRange1), + quint32(os2->ulCodePageRange2) + }; + + writingSystems = QPlatformFontDatabase::writingSystemsFromTrueTypeBits(unicodeRange, codePageRange); + + if (os2->usWeightClass) { + weight = QPlatformFontDatabase::weightFromInteger(os2->usWeightClass); + } else if (os2->panose[2]) { + int w = os2->panose[2]; + if (w <= 1) + weight = QFont::Thin; + else if (w <= 2) + weight = QFont::ExtraLight; + else if (w <= 3) + weight = QFont::Light; + else if (w <= 5) + weight = QFont::Normal; + else if (w <= 6) + weight = QFont::Medium; + else if (w <= 7) + weight = QFont::DemiBold; + else if (w <= 8) + weight = QFont::Bold; + else if (w <= 9) + weight = QFont::ExtraBold; + else if (w <= 10) + weight = QFont::Black; + } + } + + QString family = QString::fromLatin1(face->family_name); + FontFile *fontFile = new FontFile; + fontFile->fileName = QFile::decodeName(file); + fontFile->indexValue = index; + + QFont::Stretch stretch = QFont::Unstretched; + + registerFont(family,QString::fromLatin1(face->style_name),QString(),weight,style,stretch,true,true,0,fixedPitch,writingSystems,fontFile); + + families.append(family); + + FT_Done_Face(face); + ++index; + } while (index < numFaces); + return families; +} + +QT_END_NAMESPACE |