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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QDISTANCEFIELD_H
#define QDISTANCEFIELD_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 <qrawfont.h>
#include <private/qfontengine_p.h>
#include <QtCore/qshareddata.h>
QT_BEGIN_NAMESPACE
#define QT_DISTANCEFIELD_DEFAULT_BASEFONTSIZE 54
#define QT_DISTANCEFIELD_DEFAULT_TILESIZE 64
#define QT_DISTANCEFIELD_DEFAULT_SCALE 16
#define QT_DISTANCEFIELD_DEFAULT_RADIUS 80
#define QT_DISTANCEFIELD_HIGHGLYPHCOUNT 2000
#define QT_DISTANCEFIELD_BASEFONTSIZE(NarrowOutlineFont) \
(NarrowOutlineFont ? QT_DISTANCEFIELD_DEFAULT_BASEFONTSIZE * 2 : \
QT_DISTANCEFIELD_DEFAULT_BASEFONTSIZE)
#define QT_DISTANCEFIELD_TILESIZE(NarrowOutlineFont) \
(NarrowOutlineFont ? QT_DISTANCEFIELD_DEFAULT_TILESIZE * 2 : \
QT_DISTANCEFIELD_DEFAULT_TILESIZE)
#define QT_DISTANCEFIELD_SCALE(NarrowOutlineFont) \
(NarrowOutlineFont ? QT_DISTANCEFIELD_DEFAULT_SCALE / 2 : \
QT_DISTANCEFIELD_DEFAULT_SCALE)
#define QT_DISTANCEFIELD_RADIUS(NarrowOutlineFont) \
(NarrowOutlineFont ? QT_DISTANCEFIELD_DEFAULT_RADIUS / 2 : \
QT_DISTANCEFIELD_DEFAULT_RADIUS)
bool Q_GUI_EXPORT qt_fontHasNarrowOutlines(const QRawFont &f);
bool Q_GUI_EXPORT qt_fontHasNarrowOutlines(QFontEngine *fontEngine);
class Q_GUI_EXPORT QDistanceFieldData : public QSharedData
{
public:
QDistanceFieldData() : glyph(0), width(0), height(0), nbytes(0), data(0) {}
QDistanceFieldData(const QDistanceFieldData &other);
~QDistanceFieldData();
static QDistanceFieldData *create(const QSize &size);
static QDistanceFieldData *create(const QPainterPath &path, bool doubleResolution);
glyph_t glyph;
int width;
int height;
int nbytes;
uchar *data;
};
class Q_GUI_EXPORT QDistanceField
{
public:
QDistanceField();
QDistanceField(int width, int height);
QDistanceField(const QRawFont &font, glyph_t glyph, bool doubleResolution = false);
QDistanceField(QFontEngine *fontEngine, glyph_t glyph, bool doubleResolution = false);
QDistanceField(const QPainterPath &path, glyph_t glyph, bool doubleResolution = false);
QDistanceField(const QDistanceField &other);
bool isNull() const;
glyph_t glyph() const;
void setGlyph(const QRawFont &font, glyph_t glyph, bool doubleResolution = false);
void setGlyph(QFontEngine *fontEngine, glyph_t glyph, bool doubleResolution = false);
int width() const;
int height() const;
QDistanceField copy(const QRect &rect = QRect()) const;
inline QDistanceField copy(int x, int y, int w, int h) const
{ return copy(QRect(x, y, w, h)); }
uchar *bits();
const uchar *bits() const;
const uchar *constBits() const;
uchar *scanLine(int);
const uchar *scanLine(int) const;
const uchar *constScanLine(int) const;
QImage toImage(QImage::Format format = QImage::Format_ARGB32_Premultiplied) const;
private:
QDistanceField(QDistanceFieldData *data);
QSharedDataPointer<QDistanceFieldData> d;
friend class QDistanceFieldData;
};
QT_END_NAMESPACE
#endif // QDISTANCEFIELD_H
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