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Diffstat (limited to 'src/platformsupport/fontdatabases/basicunix/qbasicunixfontdatabase.cpp')
| -rw-r--r-- | src/platformsupport/fontdatabases/basicunix/qbasicunixfontdatabase.cpp | 422 |
1 files changed, 422 insertions, 0 deletions
diff --git a/src/platformsupport/fontdatabases/basicunix/qbasicunixfontdatabase.cpp b/src/platformsupport/fontdatabases/basicunix/qbasicunixfontdatabase.cpp new file mode 100644 index 0000000000..8012f84797 --- /dev/null +++ b/src/platformsupport/fontdatabases/basicunix/qbasicunixfontdatabase.cpp @@ -0,0 +1,422 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qbasicunixfontdatabase_p.h" + +#include <QtGui/private/qguiapplication_p.h> +#include <QtGui/QPlatformScreen> + +#include <QtCore/QFile> +#include <QtCore/QLibraryInfo> +#include <QtCore/QDir> +#include <QtCore/QUuid> + +#undef QT_NO_FREETYPE +#include <QtGui/private/qfontengine_ft_p.h> +#include <QtGui/private/qfontengine_p.h> + +#include <ft2build.h> +#include FT_TRUETYPE_TABLES_H + +#define SimplifiedChineseCsbBit 18 +#define TraditionalChineseCsbBit 20 +#define JapaneseCsbBit 17 +#define KoreanCsbBit 21 + +static int requiredUnicodeBits[QFontDatabase::WritingSystemsCount][2] = { + // Any, + { 127, 127 }, + // Latin, + { 0, 127 }, + // Greek, + { 7, 127 }, + // Cyrillic, + { 9, 127 }, + // Armenian, + { 10, 127 }, + // Hebrew, + { 11, 127 }, + // Arabic, + { 13, 127 }, + // Syriac, + { 71, 127 }, + //Thaana, + { 72, 127 }, + //Devanagari, + { 15, 127 }, + //Bengali, + { 16, 127 }, + //Gurmukhi, + { 17, 127 }, + //Gujarati, + { 18, 127 }, + //Oriya, + { 19, 127 }, + //Tamil, + { 20, 127 }, + //Telugu, + { 21, 127 }, + //Kannada, + { 22, 127 }, + //Malayalam, + { 23, 127 }, + //Sinhala, + { 73, 127 }, + //Thai, + { 24, 127 }, + //Lao, + { 25, 127 }, + //Tibetan, + { 70, 127 }, + //Myanmar, + { 74, 127 }, + // Georgian, + { 26, 127 }, + // Khmer, + { 80, 127 }, + // SimplifiedChinese, + { 126, 127 }, + // TraditionalChinese, + { 126, 127 }, + // Japanese, + { 126, 127 }, + // Korean, + { 56, 127 }, + // Vietnamese, + { 0, 127 }, // same as latin1 + // Other, + { 126, 127 }, + // Ogham, + { 78, 127 }, + // Runic, + { 79, 127 }, + // Nko, + { 14, 127 }, +}; + +static QSupportedWritingSystems determineWritingSystemsFromTrueTypeBits(quint32 unicodeRange[4], quint32 codePageRange[2]) +{ + QSupportedWritingSystems writingSystems; + bool hasScript = false; + + int i; + for(i = 0; i < QFontDatabase::WritingSystemsCount; i++) { + int bit = requiredUnicodeBits[i][0]; + int index = bit/32; + int flag = 1 << (bit&31); + if (bit != 126 && unicodeRange[index] & flag) { + bit = requiredUnicodeBits[i][1]; + index = bit/32; + + flag = 1 << (bit&31); + if (bit == 127 || unicodeRange[index] & flag) { + writingSystems.setSupported(QFontDatabase::WritingSystem(i)); + hasScript = true; + // qDebug("font %s: index=%d, flag=%8x supports script %d", familyName.latin1(), index, flag, i); + } + } + } + if(codePageRange[0] & (1 << SimplifiedChineseCsbBit)) { + writingSystems.setSupported(QFontDatabase::SimplifiedChinese); + hasScript = true; + //qDebug("font %s supports Simplified Chinese", familyName.latin1()); + } + if(codePageRange[0] & (1 << TraditionalChineseCsbBit)) { + writingSystems.setSupported(QFontDatabase::TraditionalChinese); + hasScript = true; + //qDebug("font %s supports Traditional Chinese", familyName.latin1()); + } + if(codePageRange[0] & (1 << JapaneseCsbBit)) { + writingSystems.setSupported(QFontDatabase::Japanese); + hasScript = true; + //qDebug("font %s supports Japanese", familyName.latin1()); + } + if(codePageRange[0] & (1 << KoreanCsbBit)) { + writingSystems.setSupported(QFontDatabase::Korean); + hasScript = true; + //qDebug("font %s supports Korean", familyName.latin1()); + } + if (!hasScript) + writingSystems.setSupported(QFontDatabase::Symbol); + + return writingSystems; +} + +static inline bool scriptRequiresOpenType(int script) +{ + return ((script >= QUnicodeTables::Syriac && script <= QUnicodeTables::Sinhala) + || script == QUnicodeTables::Khmer || script == QUnicodeTables::Nko); +} + +void QBasicUnixFontDatabase::populateFontDatabase() +{ + QPlatformFontDatabase::populateFontDatabase(); + QString fontpath = fontDir(); + + if(!QFile::exists(fontpath)) { + qFatal("QFontDatabase: Cannot find font directory %s - is Qt installed correctly?", + qPrintable(fontpath)); + } + + QDir dir(fontpath); + dir.setNameFilters(QStringList() << QLatin1String("*.ttf") + << QLatin1String("*.ttc") << QLatin1String("*.pfa") + << QLatin1String("*.pfb")); + dir.refresh(); + for (int i = 0; i < int(dir.count()); ++i) { + const QByteArray file = QFile::encodeName(dir.absoluteFilePath(dir[i])); +// qDebug() << "looking at" << file; + addTTFile(QByteArray(), file); + } +} + +QFontEngine *QBasicUnixFontDatabase::fontEngine(const QFontDef &fontDef, QUnicodeTables::Script script, void *usrPtr) +{ + QFontEngineFT *engine; + FontFile *fontfile = static_cast<FontFile *> (usrPtr); + QFontEngine::FaceId fid; + fid.filename = fontfile->fileName.toLocal8Bit(); + fid.index = fontfile->indexValue; + engine = new QFontEngineFT(fontDef); + + bool antialias = !(fontDef.styleStrategy & QFont::NoAntialias); + QFontEngineFT::GlyphFormat format = antialias? QFontEngineFT::Format_A8 : QFontEngineFT::Format_Mono; + if (!engine->init(fid,antialias,format)) { + delete engine; + engine = 0; + return engine; + } + if (engine->invalid()) { + delete engine; + engine = 0; + } else if (scriptRequiresOpenType(script)) { + HB_Face hbFace = engine->harfbuzzFace(); + if (!hbFace || !hbFace->supported_scripts[script]) { + delete engine; + engine = 0; + } + } + + return engine; +} + +namespace { + + class QFontEngineFTRawData: public QFontEngineFT + { + public: + QFontEngineFTRawData(const QFontDef &fontDef) : QFontEngineFT(fontDef) + { + } + + void updateFamilyNameAndStyle() + { + fontDef.family = QString::fromAscii(freetype->face->family_name); + + if (freetype->face->style_flags & FT_STYLE_FLAG_ITALIC) + fontDef.style = QFont::StyleItalic; + + if (freetype->face->style_flags & FT_STYLE_FLAG_BOLD) + fontDef.weight = QFont::Bold; + } + + bool initFromData(const QByteArray &fontData) + { + FaceId faceId; + faceId.filename = ""; + faceId.index = 0; + faceId.uuid = QUuid::createUuid().toByteArray(); + + return init(faceId, true, Format_None, fontData); + } + }; + +} + +QFontEngine *QBasicUnixFontDatabase::fontEngine(const QByteArray &fontData, qreal pixelSize, + QFont::HintingPreference hintingPreference) +{ + QFontDef fontDef; + fontDef.pixelSize = pixelSize; + + QFontEngineFTRawData *fe = new QFontEngineFTRawData(fontDef); + if (!fe->initFromData(fontData)) { + delete fe; + return 0; + } + + fe->updateFamilyNameAndStyle(); + + switch (hintingPreference) { + case QFont::PreferNoHinting: + fe->setDefaultHintStyle(QFontEngineFT::HintNone); + break; + case QFont::PreferFullHinting: + fe->setDefaultHintStyle(QFontEngineFT::HintFull); + break; + case QFont::PreferVerticalHinting: + fe->setDefaultHintStyle(QFontEngineFT::HintLight); + break; + default: + // Leave it as it is + break; + } + + return fe; +} + +QStringList QBasicUnixFontDatabase::fallbacksForFamily(const QString family, const QFont::Style &style, const QFont::StyleHint &styleHint, const QUnicodeTables::Script &script) const +{ + Q_UNUSED(family); + Q_UNUSED(style); + Q_UNUSED(script); + Q_UNUSED(styleHint); + return QStringList(); +} + +QStringList QBasicUnixFontDatabase::addApplicationFont(const QByteArray &fontData, const QString &fileName) +{ + return addTTFile(fontData,fileName.toLocal8Bit()); +} + +void QBasicUnixFontDatabase::releaseHandle(void *handle) +{ + FontFile *file = static_cast<FontFile *>(handle); + delete file; +} + +QStringList QBasicUnixFontDatabase::addTTFile(const QByteArray &fontData, const QByteArray &file) +{ + extern FT_Library qt_getFreetype(); + 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; + + 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_symbol) { + writingSystems.setSupported(QFontDatabase::Symbol); + break; + } + } + + TT_OS2 *os2 = (TT_OS2 *)FT_Get_Sfnt_Table(face, ft_sfnt_os2); + if (os2) { + quint32 unicodeRange[4] = { + os2->ulUnicodeRange1, os2->ulUnicodeRange2, os2->ulUnicodeRange3, os2->ulUnicodeRange4 + }; + quint32 codePageRange[2] = { + os2->ulCodePageRange1, os2->ulCodePageRange2 + }; + + writingSystems = determineWritingSystemsFromTrueTypeBits(unicodeRange, codePageRange); + + if (os2->usWeightClass == 0) + ; + else if (os2->usWeightClass < 350) + weight = QFont::Light; + else if (os2->usWeightClass < 450) + weight = QFont::Normal; + else if (os2->usWeightClass < 650) + weight = QFont::DemiBold; + else if (os2->usWeightClass < 750) + weight = QFont::Bold; + else if (os2->usWeightClass < 1000) + weight = QFont::Black; + + if (os2->panose[2] >= 2) { + int w = os2->panose[2]; + if (w <= 3) + weight = QFont::Light; + else if (w <= 5) + weight = QFont::Normal; + else if (w <= 7) + weight = QFont::DemiBold; + else if (w <= 8) + weight = QFont::Bold; + else if (w <= 10) + weight = QFont::Black; + } + } + + QString family = QString::fromAscii(face->family_name); + FontFile *fontFile = new FontFile; + fontFile->fileName = QString::fromAscii(file); + fontFile->indexValue = index; + + QFont::Stretch stretch = QFont::Unstretched; + + registerFont(family,QString(),weight,style,stretch,true,true,0,writingSystems,fontFile); + + families.append(family); + + FT_Done_Face(face); + ++index; + } while (index < numFaces); + return families; +} |