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| |
| #ifndef QFONTENGINE_QPF2_P_H |
| #define QFONTENGINE_QPF2_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| #include <QtCore/qconfig.h> |
| #include <QtCore/qglobal.h> |
| #include <QtCore/qendian.h> |
| #include <QtCore/QBuffer> |
| |
| #include "qfontengine_p.h" |
| |
| #include <QtCore/QFile> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QFontEngine; |
| class QFreetypeFace; |
| class QBuffer; |
| |
| class Q_GUI_EXPORT QFontEngineQPF2 : public QFontEngine |
| { |
| public: |
| // if you add new tags please make sure to update the tables in |
| // qpfutil.cpp and tools/makeqpf/qpf2.cpp |
| enum HeaderTag { |
| Tag_FontName, // 0 string |
| Tag_FileName, // 1 string |
| Tag_FileIndex, // 2 quint32 |
| Tag_FontRevision, // 3 quint32 |
| Tag_FreeText, // 4 string |
| Tag_Ascent, // 5 QFixed |
| Tag_Descent, // 6 QFixed |
| Tag_Leading, // 7 QFixed |
| Tag_XHeight, // 8 QFixed |
| Tag_AverageCharWidth, // 9 QFixed |
| Tag_MaxCharWidth, // 10 QFixed |
| Tag_LineThickness, // 11 QFixed |
| Tag_MinLeftBearing, // 12 QFixed |
| Tag_MinRightBearing, // 13 QFixed |
| Tag_UnderlinePosition, // 14 QFixed |
| Tag_GlyphFormat, // 15 quint8 |
| Tag_PixelSize, // 16 quint8 |
| Tag_Weight, // 17 quint8 |
| Tag_Style, // 18 quint8 |
| Tag_EndOfHeader, // 19 string |
| Tag_WritingSystems, // 20 bitfield |
| |
| NumTags |
| }; |
| |
| enum TagType { |
| StringType, |
| FixedType, |
| UInt8Type, |
| UInt32Type, |
| BitFieldType |
| }; |
| |
| struct Tag |
| { |
| quint16 tag; |
| quint16 size; |
| }; |
| |
| enum GlyphFormat { |
| BitmapGlyphs = 1, |
| AlphamapGlyphs = 8 |
| }; |
| |
| enum { |
| CurrentMajorVersion = 2, |
| CurrentMinorVersion = 0 |
| }; |
| |
| // The CMap is identical to the TrueType CMap table format |
| // The GMap table is a normal array with the total number of |
| // covered glyphs in the TrueType font |
| enum BlockTag { |
| CMapBlock, |
| GMapBlock, |
| GlyphBlock |
| }; |
| |
| struct Header |
| { |
| char magic[4]; // 'QPF2' |
| quint32 lock; // values: 0 = unlocked, 0xffffffff = read-only, otherwise qws client id of locking process |
| quint8 majorVersion; |
| quint8 minorVersion; |
| quint16 dataSize; |
| }; |
| |
| struct Block |
| { |
| quint16 tag; |
| quint16 pad; |
| quint32 dataSize; |
| }; |
| |
| struct Glyph |
| { |
| quint8 width; |
| quint8 height; |
| quint8 bytesPerLine; |
| qint8 x; |
| qint8 y; |
| qint8 advance; |
| }; |
| |
| QFontEngineQPF2(const QFontDef &def, const QByteArray &data); |
| ~QFontEngineQPF2(); |
| |
| FaceId faceId() const Q_DECL_OVERRIDE { return face_id; } |
| bool getSfntTableData(uint tag, uchar *buffer, uint *length) const Q_DECL_OVERRIDE; |
| |
| virtual glyph_t glyphIndex(uint ucs4) const Q_DECL_OVERRIDE; |
| bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, ShaperFlags flags) const Q_DECL_OVERRIDE; |
| void recalcAdvances(QGlyphLayout *, ShaperFlags) const Q_DECL_OVERRIDE; |
| |
| void addOutlineToPath(qreal x, qreal y, const QGlyphLayout &glyphs, QPainterPath *path, QTextItem::RenderFlags flags) Q_DECL_OVERRIDE; |
| QImage alphaMapForGlyph(glyph_t t) Q_DECL_OVERRIDE; |
| |
| glyph_metrics_t boundingBox(const QGlyphLayout &glyphs) Q_DECL_OVERRIDE; |
| glyph_metrics_t boundingBox(glyph_t glyph) Q_DECL_OVERRIDE; |
| |
| QFixed ascent() const Q_DECL_OVERRIDE; |
| QFixed descent() const Q_DECL_OVERRIDE; |
| QFixed leading() const Q_DECL_OVERRIDE; |
| qreal maxCharWidth() const Q_DECL_OVERRIDE; |
| qreal minLeftBearing() const Q_DECL_OVERRIDE; |
| qreal minRightBearing() const Q_DECL_OVERRIDE; |
| QFixed underlinePosition() const Q_DECL_OVERRIDE; |
| QFixed lineThickness() const Q_DECL_OVERRIDE; |
| |
| virtual int glyphCount() const Q_DECL_OVERRIDE { return glyphMapEntries; } |
| |
| bool isValid() const; |
| |
| const Glyph *findGlyph(glyph_t g) const; |
| |
| static bool verifyHeader(const uchar *data, int size); |
| static QVariant extractHeaderField(const uchar *data, HeaderTag tag); |
| |
| private: |
| |
| const uchar *fontData; |
| int dataSize; |
| const uchar *cmap; |
| quint32 cmapOffset; |
| int cmapSize; |
| quint32 glyphMapOffset; |
| quint32 glyphMapEntries; |
| quint32 glyphDataOffset; |
| quint32 glyphDataSize; |
| QString internalFileName; |
| QString encodedFileName; |
| bool readOnly; |
| |
| FaceId face_id; |
| QByteArray freetypeCMapTable; |
| mutable bool kerning_pairs_loaded; |
| }; |
| |
| struct QPF2Generator |
| { |
| QPF2Generator(QBuffer *device, QFontEngine *engine) |
| : dev(device), fe(engine) {} |
| |
| void generate(); |
| void writeHeader(); |
| void writeGMap(); |
| void writeBlock(QFontEngineQPF2::BlockTag tag, const QByteArray &data); |
| |
| void writeTaggedString(QFontEngineQPF2::HeaderTag tag, const QByteArray &string); |
| void writeTaggedUInt32(QFontEngineQPF2::HeaderTag tag, quint32 value); |
| void writeTaggedUInt8(QFontEngineQPF2::HeaderTag tag, quint8 value); |
| void writeTaggedQFixed(QFontEngineQPF2::HeaderTag tag, QFixed value); |
| |
| void writeUInt16(quint16 value) { value = qToBigEndian(value); dev->write((const char *)&value, sizeof(value)); } |
| void writeUInt32(quint32 value) { value = qToBigEndian(value); dev->write((const char *)&value, sizeof(value)); } |
| void writeUInt8(quint8 value) { dev->write((const char *)&value, sizeof(value)); } |
| void writeInt8(qint8 value) { dev->write((const char *)&value, sizeof(value)); } |
| |
| void align4() { while (dev->pos() & 3) { dev->putChar('\0'); } } |
| |
| QBuffer *dev; |
| QFontEngine *fe; |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QFONTENGINE_QPF2_P_H |