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39
40 #include "qfreetypefontdatabase_p.h"
41
42 #include <QtGui/private/qguiapplication_p.h>
43 #include <qpa/qplatformscreen.h>
44
45 #include <QtCore/QFile>
46 #include <QtCore/QLibraryInfo>
47 #include <QtCore/QDir>
48 #include <QtCore/QtEndian>
49
50 #undef QT_NO_FREETYPE
51 #include <QtFontDatabaseSupport/private/qfontengine_ft_p.h>
52
53 #include <ft2build.h>
54 #include FT_TRUETYPE_TABLES_H
55 #include FT_ERRORS_H
56
57 QT_BEGIN_NAMESPACE
58
populateFontDatabase()59 void QFreeTypeFontDatabase::populateFontDatabase()
60 {
61 QString fontpath = fontDir();
62 QDir dir(fontpath);
63
64 if (!dir.exists()) {
65 qWarning("QFontDatabase: Cannot find font directory %s.\n"
66 "Note that Qt no longer ships fonts. Deploy some (from https://dejavu-fonts.github.io/ for example) or switch to fontconfig.",
67 qPrintable(fontpath));
68 return;
69 }
70
71 QStringList nameFilters;
72 nameFilters << QLatin1String("*.ttf")
73 << QLatin1String("*.ttc")
74 << QLatin1String("*.pfa")
75 << QLatin1String("*.pfb")
76 << QLatin1String("*.otf");
77
78 const auto fis = dir.entryInfoList(nameFilters, QDir::Files);
79 for (const QFileInfo &fi : fis) {
80 const QByteArray file = QFile::encodeName(fi.absoluteFilePath());
81 QFreeTypeFontDatabase::addTTFile(QByteArray(), file);
82 }
83 }
84
fontEngine(const QFontDef & fontDef,void * usrPtr)85 QFontEngine *QFreeTypeFontDatabase::fontEngine(const QFontDef &fontDef, void *usrPtr)
86 {
87 FontFile *fontfile = static_cast<FontFile *>(usrPtr);
88 QFontEngine::FaceId faceId;
89 faceId.filename = QFile::encodeName(fontfile->fileName);
90 faceId.index = fontfile->indexValue;
91
92 return QFontEngineFT::create(fontDef, faceId);
93 }
94
fontEngine(const QByteArray & fontData,qreal pixelSize,QFont::HintingPreference hintingPreference)95 QFontEngine *QFreeTypeFontDatabase::fontEngine(const QByteArray &fontData, qreal pixelSize,
96 QFont::HintingPreference hintingPreference)
97 {
98 return QFontEngineFT::create(fontData, pixelSize, hintingPreference);
99 }
100
addApplicationFont(const QByteArray & fontData,const QString & fileName)101 QStringList QFreeTypeFontDatabase::addApplicationFont(const QByteArray &fontData, const QString &fileName)
102 {
103 return QFreeTypeFontDatabase::addTTFile(fontData, fileName.toLocal8Bit());
104 }
105
releaseHandle(void * handle)106 void QFreeTypeFontDatabase::releaseHandle(void *handle)
107 {
108 FontFile *file = static_cast<FontFile *>(handle);
109 delete file;
110 }
111
112 extern FT_Library qt_getFreetype();
113
addTTFile(const QByteArray & fontData,const QByteArray & file)114 QStringList QFreeTypeFontDatabase::addTTFile(const QByteArray &fontData, const QByteArray &file)
115 {
116 FT_Library library = qt_getFreetype();
117
118 int index = 0;
119 int numFaces = 0;
120 QStringList families;
121 do {
122 FT_Face face;
123 FT_Error error;
124 if (!fontData.isEmpty()) {
125 error = FT_New_Memory_Face(library, (const FT_Byte *)fontData.constData(), fontData.size(), index, &face);
126 } else {
127 error = FT_New_Face(library, file.constData(), index, &face);
128 }
129 if (error != FT_Err_Ok) {
130 qDebug() << "FT_New_Face failed with index" << index << ':' << Qt::hex << error;
131 break;
132 }
133 numFaces = face->num_faces;
134
135 QFont::Weight weight = QFont::Normal;
136
137 QFont::Style style = QFont::StyleNormal;
138 if (face->style_flags & FT_STYLE_FLAG_ITALIC)
139 style = QFont::StyleItalic;
140
141 if (face->style_flags & FT_STYLE_FLAG_BOLD)
142 weight = QFont::Bold;
143
144 bool fixedPitch = (face->face_flags & FT_FACE_FLAG_FIXED_WIDTH);
145 QSupportedWritingSystems writingSystems;
146 // detect symbol fonts
147 for (int i = 0; i < face->num_charmaps; ++i) {
148 FT_CharMap cm = face->charmaps[i];
149 if (cm->encoding == FT_ENCODING_ADOBE_CUSTOM
150 || cm->encoding == FT_ENCODING_MS_SYMBOL) {
151 writingSystems.setSupported(QFontDatabase::Symbol);
152 break;
153 }
154 }
155
156 TT_OS2 *os2 = (TT_OS2 *)FT_Get_Sfnt_Table(face, ft_sfnt_os2);
157 if (os2) {
158 quint32 unicodeRange[4] = {
159 quint32(os2->ulUnicodeRange1),
160 quint32(os2->ulUnicodeRange2),
161 quint32(os2->ulUnicodeRange3),
162 quint32(os2->ulUnicodeRange4)
163 };
164 quint32 codePageRange[2] = {
165 quint32(os2->ulCodePageRange1),
166 quint32(os2->ulCodePageRange2)
167 };
168
169 writingSystems = QPlatformFontDatabase::writingSystemsFromTrueTypeBits(unicodeRange, codePageRange);
170
171 if (os2->usWeightClass) {
172 weight = QPlatformFontDatabase::weightFromInteger(os2->usWeightClass);
173 } else if (os2->panose[2]) {
174 int w = os2->panose[2];
175 if (w <= 1)
176 weight = QFont::Thin;
177 else if (w <= 2)
178 weight = QFont::ExtraLight;
179 else if (w <= 3)
180 weight = QFont::Light;
181 else if (w <= 5)
182 weight = QFont::Normal;
183 else if (w <= 6)
184 weight = QFont::Medium;
185 else if (w <= 7)
186 weight = QFont::DemiBold;
187 else if (w <= 8)
188 weight = QFont::Bold;
189 else if (w <= 9)
190 weight = QFont::ExtraBold;
191 else if (w <= 10)
192 weight = QFont::Black;
193 }
194 }
195
196 QString family = QString::fromLatin1(face->family_name);
197 FontFile *fontFile = new FontFile;
198 fontFile->fileName = QFile::decodeName(file);
199 fontFile->indexValue = index;
200
201 QFont::Stretch stretch = QFont::Unstretched;
202
203 registerFont(family,QString::fromLatin1(face->style_name),QString(),weight,style,stretch,true,true,0,fixedPitch,writingSystems,fontFile);
204
205 families.append(family);
206
207 FT_Done_Face(face);
208 ++index;
209 } while (index < numFaces);
210 return families;
211 }
212
213 QT_END_NAMESPACE
214