| /**************************************************************************** |
| ** |
| ** 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 QtGui module 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. |
| ** |
| ** |
| ** |
| ** |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| #ifndef QFONTENGINE_FT_P_H |
| #define QFONTENGINE_FT_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 "qfontengine_p.h" |
| |
| #ifndef QT_NO_FREETYPE |
| |
| #include <ft2build.h> |
| #include FT_FREETYPE_H |
| |
| #if defined(Q_WS_X11) |
| #include <private/qt_x11_p.h> |
| #endif |
| |
| #include <unistd.h> |
| |
| #ifndef QT_NO_FONTCONFIG |
| #include <fontconfig/fontconfig.h> |
| #endif |
| |
| #include <qmutex.h> |
| |
| #include <harfbuzz-shaper.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| /* |
| * This struct represents one font file on disk (like Arial.ttf) and is shared between all the font engines |
| * that show this font file (at different pixel sizes). |
| */ |
| struct QFreetypeFace |
| { |
| void computeSize(const QFontDef &fontDef, int *xsize, int *ysize, bool *outline_drawing); |
| QFontEngine::Properties properties() const; |
| bool getSfntTable(uint tag, uchar *buffer, uint *length) const; |
| |
| static QFreetypeFace *getFace(const QFontEngine::FaceId &face_id); |
| void release(const QFontEngine::FaceId &face_id); |
| |
| // locks the struct for usage. Any read/write operations require locking. |
| void lock() |
| { |
| _lock.lock(); |
| } |
| void unlock() |
| { |
| _lock.unlock(); |
| } |
| |
| FT_Face face; |
| HB_Face hbFace; |
| #ifndef QT_NO_FONTCONFIG |
| FcCharSet *charset; |
| #endif |
| int xsize; // 26.6 |
| int ysize; // 26.6 |
| FT_Matrix matrix; |
| FT_CharMap unicode_map; |
| FT_CharMap symbol_map; |
| |
| enum { cmapCacheSize = 0x200 }; |
| glyph_t cmapCache[cmapCacheSize]; |
| |
| int fsType() const; |
| |
| HB_Error getPointInOutline(HB_Glyph glyph, int flags, hb_uint32 point, HB_Fixed *xpos, HB_Fixed *ypos, hb_uint32 *nPoints); |
| |
| static void addGlyphToPath(FT_Face face, FT_GlyphSlot g, const QFixedPoint &point, QPainterPath *path, FT_Fixed x_scale, FT_Fixed y_scale); |
| static void addBitmapToPath(FT_GlyphSlot slot, const QFixedPoint &point, QPainterPath *path, bool = false); |
| |
| private: |
| friend class QScopedPointerDeleter<QFreetypeFace>; |
| QFreetypeFace() : _lock(QMutex::Recursive) {} |
| ~QFreetypeFace() {} |
| QAtomicInt ref; |
| QMutex _lock; |
| QByteArray fontData; |
| }; |
| |
| class Q_GUI_EXPORT QFontEngineFT : public QFontEngine |
| { |
| public: |
| enum GlyphFormat { |
| Format_None, |
| Format_Render = Format_None, |
| Format_Mono, |
| Format_A8, |
| Format_A32 |
| }; |
| |
| /* we don't cache glyphs that are too large anyway, so we can make this struct rather small */ |
| struct Glyph { |
| ~Glyph(); |
| short linearAdvance; |
| unsigned char width; |
| unsigned char height; |
| signed char x; |
| signed char y; |
| signed char advance; |
| signed char format; |
| uchar *data; |
| unsigned int uploadedToServer : 1; |
| }; |
| |
| enum SubpixelAntialiasingType { |
| Subpixel_None, |
| Subpixel_RGB, |
| Subpixel_BGR, |
| Subpixel_VRGB, |
| Subpixel_VBGR |
| }; |
| |
| #if defined(Q_WS_X11) && !defined(QT_NO_XRENDER) |
| typedef XGlyphInfo GlyphInfo; |
| #else |
| struct GlyphInfo { |
| unsigned short width; |
| unsigned short height; |
| short x; |
| short y; |
| short xOff; |
| short yOff; |
| }; |
| #endif |
| |
| struct QGlyphSet |
| { |
| QGlyphSet(); |
| ~QGlyphSet(); |
| FT_Matrix transformationMatrix; |
| unsigned long id; // server sided id, GlyphSet for X11 |
| bool outline_drawing; |
| |
| void removeGlyphFromCache(int index); |
| void clear(); |
| inline Glyph *getGlyph(int index) const |
| { |
| if (index < 256) |
| return fast_glyph_data[index]; |
| return glyph_data.value(index); |
| } |
| void setGlyph(int index, Glyph *glyph); |
| |
| private: |
| mutable QHash<int, Glyph *> glyph_data; // maps from glyph index to glyph data |
| mutable Glyph *fast_glyph_data[256]; // for fast lookup of glyphs < 256 |
| mutable int fast_glyph_count; |
| }; |
| |
| virtual QFontEngine::FaceId faceId() const; |
| virtual QFontEngine::Properties properties() const; |
| virtual QFixed emSquareSize() const; |
| |
| virtual bool getSfntTableData(uint tag, uchar *buffer, uint *length) const; |
| virtual int synthesized() const; |
| |
| virtual QFixed ascent() const; |
| virtual QFixed descent() const; |
| virtual QFixed leading() const; |
| virtual QFixed xHeight() const; |
| virtual QFixed averageCharWidth() const; |
| |
| virtual qreal maxCharWidth() const; |
| virtual qreal minLeftBearing() const; |
| virtual qreal minRightBearing() const; |
| virtual QFixed lineThickness() const; |
| virtual QFixed underlinePosition() const; |
| |
| void doKerning(QGlyphLayout *, QTextEngine::ShaperFlags) const; |
| |
| inline virtual Type type() const |
| { return QFontEngine::Freetype; } |
| inline virtual const char *name() const |
| { return "freetype"; } |
| |
| virtual void getUnscaledGlyph(glyph_t glyph, QPainterPath *path, glyph_metrics_t *metrics); |
| |
| virtual bool canRender(const QChar *string, int len); |
| |
| virtual void addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int nglyphs, |
| QPainterPath *path, QTextItem::RenderFlags flags); |
| virtual void addOutlineToPath(qreal x, qreal y, const QGlyphLayout &glyphs, |
| QPainterPath *path, QTextItem::RenderFlags flags); |
| |
| virtual bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, |
| QTextEngine::ShaperFlags flags) const; |
| |
| virtual glyph_metrics_t boundingBox(const QGlyphLayout &glyphs); |
| virtual glyph_metrics_t boundingBox(glyph_t glyph); |
| virtual glyph_metrics_t boundingBox(glyph_t glyph, const QTransform &matrix); |
| |
| virtual void recalcAdvances(QGlyphLayout *glyphs, QTextEngine::ShaperFlags flags) const; |
| virtual QImage alphaMapForGlyph(glyph_t); |
| virtual QImage alphaRGBMapForGlyph(glyph_t, int margin, const QTransform &t); |
| virtual void removeGlyphFromCache(glyph_t glyph); |
| |
| virtual int glyphCount() const; |
| |
| enum Scaling { |
| Scaled, |
| Unscaled |
| }; |
| FT_Face lockFace(Scaling scale = Scaled) const; |
| void unlockFace() const; |
| |
| FT_Face non_locked_face() const; |
| |
| inline bool drawAntialiased() const { return antialias; } |
| inline bool invalid() const { return xsize == 0 && ysize == 0; } |
| inline bool isBitmapFont() const { return defaultFormat == Format_Mono; } |
| |
| inline Glyph *loadGlyph(uint glyph, GlyphFormat format = Format_None, bool fetchMetricsOnly = false) const |
| { return loadGlyph(&defaultGlyphSet, glyph, format, fetchMetricsOnly); } |
| Glyph *loadGlyph(QGlyphSet *set, uint glyph, GlyphFormat = Format_None, bool fetchMetricsOnly = false) const; |
| |
| QGlyphSet *defaultGlyphs() { return &defaultGlyphSet; } |
| GlyphFormat defaultGlyphFormat() const { return defaultFormat; } |
| |
| inline Glyph *cachedGlyph(glyph_t g) const { return defaultGlyphSet.getGlyph(g); } |
| |
| QGlyphSet *loadTransformedGlyphSet(const QTransform &matrix); |
| bool loadGlyphs(QGlyphSet *gs, glyph_t *glyphs, int num_glyphs, GlyphFormat format = Format_Render); |
| |
| #if defined(Q_WS_QWS) || defined(Q_OS_SYMBIAN) |
| virtual void draw(QPaintEngine * /*p*/, qreal /*x*/, qreal /*y*/, const QTextItemInt & /*si*/) {} |
| #endif |
| |
| QFontEngineFT(const QFontDef &fd); |
| virtual ~QFontEngineFT(); |
| |
| bool init(FaceId faceId, bool antiaalias, GlyphFormat defaultFormat = Format_None); |
| |
| virtual HB_Error getPointInOutline(HB_Glyph glyph, int flags, hb_uint32 point, HB_Fixed *xpos, HB_Fixed *ypos, hb_uint32 *nPoints); |
| |
| protected: |
| |
| void freeGlyphSets(); |
| |
| virtual bool uploadGlyphToServer(QGlyphSet *set, uint glyphid, Glyph *g, GlyphInfo *info, int glyphDataSize) const; |
| virtual unsigned long allocateServerGlyphSet(); |
| virtual void freeServerGlyphSet(unsigned long id); |
| |
| QFreetypeFace *freetype; |
| int default_load_flags; |
| |
| enum HintStyle { |
| HintNone, |
| HintLight, |
| HintMedium, |
| HintFull |
| }; |
| |
| HintStyle default_hint_style; |
| |
| bool antialias; |
| bool transform; |
| bool embolden; |
| SubpixelAntialiasingType subpixelType; |
| int lcdFilterType; |
| bool canUploadGlyphsToServer; |
| bool embeddedbitmap; |
| |
| private: |
| QFontEngineFT::Glyph *loadGlyphMetrics(QGlyphSet *set, uint glyph) const; |
| |
| GlyphFormat defaultFormat; |
| FT_Matrix matrix; |
| |
| QList<QGlyphSet> transformedGlyphSets; |
| mutable QGlyphSet defaultGlyphSet; |
| |
| QFontEngine::FaceId face_id; |
| |
| int xsize; |
| int ysize; |
| |
| mutable QFixed lbearing; |
| mutable QFixed rbearing; |
| QFixed line_thickness; |
| QFixed underline_position; |
| |
| FT_Size_Metrics metrics; |
| mutable bool kerning_pairs_loaded; |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QT_NO_FREETYPE |
| |
| #endif // QFONTENGINE_FT_P_H |