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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: http://www.qt-project.org/
**
** 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 QWINDOWSFONTENGINEDIRECTWRITE_H
#define QWINDOWSFONTENGINEDIRECTWRITE_H
#ifndef QT_NO_DIRECTWRITE
// Enable access to HB_Face in harfbuzz includes included by qfontengine_p.h.
#define QT_BUILD_GUI_LIB
#include <QtGui/private/qfontengine_p.h>
#undef QT_BUILD_GUI_LIB
#include <QtCore/QSharedPointer>
class QWindowsFontEngineData;
struct IDWriteFont ;
struct IDWriteFontFace ;
struct IDWriteFactory ;
struct IDWriteBitmapRenderTarget ;
struct IDWriteGdiInterop ;
QT_BEGIN_NAMESPACE
class QWindowsFontEngineDirectWrite : public QFontEngine
{
Q_OBJECT
public:
explicit QWindowsFontEngineDirectWrite(IDWriteFontFace *directWriteFontFace,
qreal pixelSize,
const QSharedPointer<QWindowsFontEngineData> &d);
~QWindowsFontEngineDirectWrite();
void initFontInfo(const QFontDef &request, int dpi, IDWriteFont *font);
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);
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 glyph, QFixed subPixelPosition);
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;
static QString fontNameSubstitute(const QString &familyName);
private:
friend class QRawFontPrivate;
QImage imageForGlyph(glyph_t t, QFixed subPixelPosition, int margin, const QTransform &xform);
void collectMetrics();
const QSharedPointer<QWindowsFontEngineData> m_fontEngineData;
IDWriteFontFace *m_directWriteFontFace;
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 // QWINDOWSFONTENGINEDIRECTWRITE_H
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