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Diffstat (limited to 'src/gui/text/qfontenginedirectwrite_p.h')
| -rw-r--r-- | src/gui/text/qfontenginedirectwrite_p.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/src/gui/text/qfontenginedirectwrite_p.h b/src/gui/text/qfontenginedirectwrite_p.h new file mode 100644 index 0000000..edf1e6a --- /dev/null +++ b/src/gui/text/qfontenginedirectwrite_p.h @@ -0,0 +1,136 @@ +/**************************************************************************** +** +** 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 QFONTENGINEDIRECTWRITE_H +#define QFONTENGINEDIRECTWRITE_H + +#ifndef QT_NO_DIRECTWRITE + +// +// 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 "private/qfontengine_p.h" + +struct IDWriteFont ; +struct IDWriteFontFace ; +struct IDWriteFactory ; +struct IDWriteBitmapRenderTarget ; +struct IDWriteGdiInterop ; + +QT_BEGIN_NAMESPACE + +class QFontEngineDirectWrite : public QFontEngine +{ + Q_OBJECT +public: + explicit QFontEngineDirectWrite(IDWriteFactory *directWriteFactory, + IDWriteFontFace *directWriteFontFace, + qreal pixelSize); + ~QFontEngineDirectWrite(); + + QFixed lineThickness() const; + bool getSfntTableData(uint tag, uchar *buffer, uint *length) const; + QFixed emSquareSize() const; + + bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, QTextEngine::ShaperFlags flags) const; + void recalcAdvances(QGlyphLayout *glyphs, QTextEngine::ShaperFlags) const; + + void addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int nglyphs, + QPainterPath *path, QTextItem::RenderFlags flags); + + glyph_metrics_t boundingBox(const QGlyphLayout &glyphs); + glyph_metrics_t boundingBox(glyph_t g); + glyph_metrics_t alphaMapBoundingBox(glyph_t glyph, + QFixed subPixelPosition, + const QTransform &matrix, + GlyphFormat format); + + QFixed ascent() const; + QFixed descent() const; + QFixed leading() const; + QFixed xHeight() const; + qreal maxCharWidth() const; + + const char *name() const; + + bool supportsSubPixelPositions() const; + + QImage alphaMapForGlyph(glyph_t, QFixed subPixelPosition, const QTransform &t); + QImage alphaRGBMapForGlyph(glyph_t t, QFixed subPixelPosition, int margin, + const QTransform &xform); + + QFontEngine *cloneWithSize(qreal pixelSize) const; + + bool canRender(const QChar *string, int len); + Type type() const; + +private: + friend class QRawFontPrivate; + + QImage imageForGlyph(glyph_t t, QFixed subPixelPosition, int margin, const QTransform &xform); + void collectMetrics(); + + IDWriteFontFace *m_directWriteFontFace; + IDWriteFactory *m_directWriteFactory; + IDWriteBitmapRenderTarget *m_directWriteBitmapRenderTarget; + + QFixed m_lineThickness; + int m_unitsPerEm; + QFixed m_ascent; + QFixed m_descent; + QFixed m_xHeight; + QFixed m_lineGap; + FaceId m_faceId; +}; + +QT_END_NAMESPACE + +#endif // QT_NO_DIRECTWRITE + +#endif // QFONTENGINEDIRECTWRITE_H |