1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2018 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the tools applications of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:GPL-EXCEPT$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT 21 ** included in the packaging of this file. Please review the following 22 ** information to ensure the GNU General Public License requirements will 23 ** be met: https://www.gnu.org/licenses/gpl-3.0.html. 24 ** 25 ** $QT_END_LICENSE$ 26 ** 27 ****************************************************************************/ 28 29 #ifndef DISTANCEFIELDMODELWORKER_H 30 #define DISTANCEFIELDMODELWORKER_H 31 32 #include <QObject> 33 #include <QRawFont> 34 #include <QtGui/private/qtextengine_p.h> 35 36 QT_BEGIN_NAMESPACE 37 38 struct CmapSubtable0; 39 struct CmapSubtable4; 40 struct CmapSubtable6; 41 struct CmapSubtable10; 42 struct CmapSubtable12; 43 class DistanceFieldModelWorker : public QObject 44 { 45 Q_OBJECT 46 public: 47 explicit DistanceFieldModelWorker(QObject *parent = nullptr); 48 49 Q_INVOKABLE void generateOneDistanceField(); 50 Q_INVOKABLE void loadFont(const QString &fileName); 51 52 void readCmapSubtable(const CmapSubtable0 *subtable, const void *end); 53 void readCmapSubtable(const CmapSubtable4 *subtable, const void *end); 54 void readCmapSubtable(const CmapSubtable6 *subtable, const void *end); 55 void readCmapSubtable(const CmapSubtable10 *subtable, const void *end); 56 void readCmapSubtable(const CmapSubtable12 *subtable, const void *end); 57 58 signals: 59 void fontLoaded(quint16 glyphCount, bool doubleResolution, qreal pixelSize); 60 void fontGenerated(); 61 void distanceFieldGenerated(const QImage &distanceField, 62 const QPainterPath &path, 63 glyph_t glyphId, 64 quint32 cmapAssignment); 65 void error(const QString &errorString); 66 67 private: 68 void readGlyphCount(); 69 void readCmap(); 70 71 QRawFont m_font; 72 quint16 m_glyphCount; 73 quint16 m_nextGlyphId; 74 bool m_doubleGlyphResolution; 75 QHash<glyph_t, quint32> m_cmapping; 76 }; 77 78 QT_END_NAMESPACE 79 80 #endif // DISTANCEFIELDMODELWORKER_H 81