133 lines
4.6 KiB
C++
133 lines
4.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QWINDOWSFONTENGINEDIRECTWRITE_H
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#define QWINDOWSFONTENGINEDIRECTWRITE_H
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#include <QtCore/qglobal.h>
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#ifndef QT_NO_DIRECTWRITE
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#include <QtGui/private/qfontengine_p.h>
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#include <QtCore/QSharedPointer>
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class QWindowsFontEngineData;
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struct IDWriteFont ;
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struct IDWriteFontFace ;
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struct IDWriteFactory ;
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struct IDWriteBitmapRenderTarget ;
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struct IDWriteGdiInterop ;
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QT_BEGIN_NAMESPACE
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class QWindowsFontEngineDirectWrite : public QFontEngine
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{
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Q_OBJECT
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public:
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explicit QWindowsFontEngineDirectWrite(IDWriteFontFace *directWriteFontFace,
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qreal pixelSize,
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const QSharedPointer<QWindowsFontEngineData> &d);
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~QWindowsFontEngineDirectWrite();
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void initFontInfo(const QFontDef &request, int dpi, IDWriteFont *font);
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QFixed lineThickness() const;
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QFixed underlinePosition() const;
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bool getSfntTableData(uint tag, uchar *buffer, uint *length) const;
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QFixed emSquareSize() const;
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bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, ShaperFlags flags) const;
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void recalcAdvances(QGlyphLayout *glyphs, ShaperFlags) const;
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void addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int nglyphs,
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QPainterPath *path, QTextItem::RenderFlags flags);
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glyph_metrics_t boundingBox(const QGlyphLayout &glyphs);
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glyph_metrics_t boundingBox(glyph_t g);
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QFixed ascent() const;
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QFixed descent() const;
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QFixed leading() const;
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QFixed xHeight() const;
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qreal maxCharWidth() const;
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const char *name() const;
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bool supportsSubPixelPositions() const;
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QImage alphaMapForGlyph(glyph_t glyph, QFixed subPixelPosition);
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QImage alphaRGBMapForGlyph(glyph_t t, QFixed subPixelPosition, const QTransform &xform);
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QFontEngine *cloneWithSize(qreal pixelSize) const;
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bool canRender(const QChar *string, int len);
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Type type() const;
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const QSharedPointer<QWindowsFontEngineData> &fontEngineData() const { return m_fontEngineData; }
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static QString fontNameSubstitute(const QString &familyName);
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private:
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QImage imageForGlyph(glyph_t t, QFixed subPixelPosition, int margin, const QTransform &xform);
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void collectMetrics();
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const QSharedPointer<QWindowsFontEngineData> m_fontEngineData;
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IDWriteFontFace *m_directWriteFontFace;
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IDWriteBitmapRenderTarget *m_directWriteBitmapRenderTarget;
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QFixed m_lineThickness;
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QFixed m_underlinePosition;
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int m_unitsPerEm;
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QFixed m_ascent;
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QFixed m_descent;
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QFixed m_xHeight;
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QFixed m_lineGap;
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FaceId m_faceId;
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};
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QT_END_NAMESPACE
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#endif // QT_NO_DIRECTWRITE
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#endif // QWINDOWSFONTENGINEDIRECTWRITE_H
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