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Diffstat (limited to 'src/widgets/platforms/s60/qfontengine_s60_p.h')
-rw-r--r-- | src/widgets/platforms/s60/qfontengine_s60_p.h | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/src/widgets/platforms/s60/qfontengine_s60_p.h b/src/widgets/platforms/s60/qfontengine_s60_p.h new file mode 100644 index 0000000000..c0eeef5264 --- /dev/null +++ b/src/widgets/platforms/s60/qfontengine_s60_p.h @@ -0,0 +1,167 @@ +/**************************************************************************** +** +** 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QFONTENGINE_S60_P_H +#define QFONTENGINE_S60_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 "qconfig.h" +#include <private/qfontengine_p.h> +#include "qsize.h" +#include <openfont.h> + +// The glyph outline code is intentionally disabled. It will be reactivated as +// soon as the glyph outline API is backported from Symbian(^4) to Symbian(^3). +#if 0 +#define Q_SYMBIAN_HAS_GLYPHOUTLINE_API +#endif + +class CFont; + +QT_BEGIN_NAMESPACE + +// ..gives us access to truetype tables +class QSymbianTypeFaceExtras +{ +public: + QSymbianTypeFaceExtras(CFont* cFont, COpenFont *openFont = 0); + ~QSymbianTypeFaceExtras(); + + QByteArray getSfntTable(uint tag) const; + bool getSfntTableData(uint tag, uchar *buffer, uint *length) const; + const uchar *cmap() const; + CFont *fontOwner() const; + bool isSymbolCMap() const; + QFixed unitsPerEm() const; + static bool symbianFontTableApiAvailable(); + +private: + CFont* m_cFont; + mutable bool m_symbolCMap; + mutable QByteArray m_cmapTable; + mutable QFixed m_unitsPerEm; + + // m_openFont and m_openFont are used if Symbian does not provide + // the Font Table API + COpenFont *m_openFont; + mutable MOpenFontTrueTypeExtension *m_trueTypeExtension; +}; + +class QFontEngineS60 : public QFontEngine +{ +public: + QFontEngineS60(const QFontDef &fontDef, const QSymbianTypeFaceExtras *extras); + ~QFontEngineS60(); + + QFixed emSquareSize() const; + bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, QTextEngine::ShaperFlags flags) const; + void recalcAdvances(QGlyphLayout *glyphs, QTextEngine::ShaperFlags flags) const; + + void addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int nglyphs, + QPainterPath *path, QTextItem::RenderFlags flags); + + QImage alphaMapForGlyph(glyph_t glyph); + + glyph_metrics_t boundingBox(const QGlyphLayout &glyphs); + glyph_metrics_t boundingBox_const(glyph_t glyph) const; // Const correctnes quirk. + glyph_metrics_t boundingBox(glyph_t glyph); + + QFixed ascent() const; + QFixed descent() const; + QFixed leading() const; + qreal maxCharWidth() const; + qreal minLeftBearing() const { return 0; } + qreal minRightBearing() const { return 0; } + + QByteArray getSfntTable(uint tag) const; + bool getSfntTableData(uint tag, uchar *buffer, uint *length) const; + + static qreal pixelsToPoints(qreal pixels, Qt::Orientation orientation = Qt::Horizontal); + static qreal pointsToPixels(qreal points, Qt::Orientation orientation = Qt::Horizontal); + + const char *name() const; + + bool canRender(const QChar *string, int len); + + Type type() const; + + void getCharacterData(glyph_t glyph, TOpenFontCharMetrics& metrics, const TUint8*& bitmap, TSize& bitmapSize) const; + void setFontScale(qreal scale); + +private: + friend class QFontPrivate; + friend class QSymbianVGFontGlyphCache; + + QFixed glyphAdvance(HB_Glyph glyph) const; + CFont *fontWithSize(qreal size) const; + static void releaseFont(CFont *&font); + + const QSymbianTypeFaceExtras *m_extras; + CFont* m_originalFont; + const qreal m_originalFontSizeInPixels; + CFont* m_scaledFont; + qreal m_scaledFontSizeInPixels; + CFont* m_activeFont; +}; + +class QFontEngineMultiS60 : public QFontEngineMulti +{ +public: + QFontEngineMultiS60(QFontEngine *first, int script, const QStringList &fallbackFamilies); + void loadEngine(int at); + + int m_script; + QStringList m_fallbackFamilies; +}; + +QT_END_NAMESPACE + +#endif // QFONTENGINE_S60_P_H |