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authorQt by Nokia <qt-info@nokia.com>2011-04-27 12:05:43 +0200
committeraxis <qt-info@nokia.com>2011-04-27 12:05:43 +0200
commit38be0d13830efd2d98281c645c3a60afe05ffece (patch)
tree6ea73f3ec77f7d153333779883e8120f82820abe /src/plugins/platforms/fontdatabases/basicunix/qbasicunixfontdatabase.cpp
Initial import from the monolithic Qt.
This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12
Diffstat (limited to 'src/plugins/platforms/fontdatabases/basicunix/qbasicunixfontdatabase.cpp')
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diff --git a/src/plugins/platforms/fontdatabases/basicunix/qbasicunixfontdatabase.cpp b/src/plugins/platforms/fontdatabases/basicunix/qbasicunixfontdatabase.cpp
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+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qbasicunixfontdatabase.h"
+
+#include <QtGui/private/qapplication_p.h>
+#include <QtGui/QPlatformScreen>
+
+#include <QtCore/QFile>
+#include <QtCore/QLibraryInfo>
+#include <QtCore/QDir>
+
+#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;
+}
+
+QStringList QBasicUnixFontDatabase::fallbacksForFamily(const QString family, const QFont::Style &style, const QUnicodeTables::Script &script) const
+{
+ Q_UNUSED(family);
+ Q_UNUSED(style);
+ Q_UNUSED(script);
+ 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);
+ }
+
+ QString family = QString::fromAscii(face->family_name);
+ FontFile *fontFile = new FontFile;
+ fontFile->fileName = file;
+ fontFile->indexValue = index;
+
+ QFont::Stretch stretch = QFont::Unstretched;
+
+ registerFont(family,"",weight,style,stretch,true,true,0,writingSystems,fontFile);
+
+ families.append(family);
+
+ FT_Done_Face(face);
+ ++index;
+ } while (index < numFaces);
+ return families;
+}
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