qdistancefield_p.h

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// Copyright (C) 2016 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

#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 <QtGui/private/qtguiglobal_p.h>

#include <qrawfont.h>

#include <private/qfontengine_p.h>

#include <QtCore/qshareddata.h>

#include <QtCore/qglobal.h>

#include <QLoggingCategory>

QT_BEGIN_NAMESPACE

bool Q_GUI_EXPORT qt_fontHasNarrowOutlines(const QRawFont &f);

bool Q_GUI_EXPORT qt_fontHasNarrowOutlines(QFontEngine *fontEngine);

int Q_GUI_EXPORT QT_DISTANCEFIELD_BASEFONTSIZE(bool narrowOutlineFont);

int Q_GUI_EXPORT QT_DISTANCEFIELD_TILESIZE(bool narrowOutlineFont);

int Q_GUI_EXPORT QT_DISTANCEFIELD_SCALE(bool narrowOutlineFont);

int Q_GUI_EXPORT QT_DISTANCEFIELD_RADIUS(bool narrowOutlineFont);

int Q_GUI_EXPORT QT_DISTANCEFIELD_HIGHGLYPHCOUNT();

class Q_GUI_EXPORT QDistanceFieldData : public QSharedData

public:

    QDistanceFieldData() : glyph(0), width(0), height(0), nbytes(0), data(nullptr) {}

    QDistanceFieldData(const QDistanceFieldData &other);

    ~QDistanceFieldData();

    static bool canAllocateSize(quint64 nbytes);

    static QDistanceFieldData *create(const QSize &size);

    static QDistanceFieldData *create(const QPainterPath &path, bool doubleResolution);

    static QDistanceFieldData *create(QSize size, 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(QSize size, const QPainterPath &path, glyph_t glyph, bool doubleResolution = false);

    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