// 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

// Qt-Security score:significant reason:default

#ifndef QSVGFONT_P_H

#define QSVGFONT_P_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 <QtCore/qhash.h>

#include "qpainterpath.h"

#include "qlist.h"

#include "qstring.h"

#include "qsvgstyle_p.h"

#include <memory>

QT_BEGIN_NAMESPACE

class Q_SVG_EXPORT QSvgGlyph

{

public:

    QSvgGlyph(const QString &unicode, const QPainterPath &path, qreal horizAdvX);

    QSvgGlyph() : m_horizAdvX(0) {}

    QString m_unicode;

    QPainterPath m_path;

    qreal m_horizAdvX;

};

class Q_SVG_EXPORT QSvgFont : public QSvgRefCounted

{

public:

    QSvgFont(qreal horizAdvX);

    ~QSvgFont() override;

    void setFamilyName(const QString &name);

    QString familyName() const;

    void setUnitsPerEm(qreal upem);

    void addGlyph(const QString &unicode, const QPainterPath &path, qreal horizAdvX = -1);

    bool addMissingGlyph(const QPainterPath &path, qreal horizAdvX);

    void draw(QPainter *p, const QPointF &point, const QList<const QSvgGlyph *> &glyphs,

              qreal pixelSize, Qt::Alignment alignment) const;

    QRectF boundingRect(QPainter *p, const QPointF &point, const QList<const QSvgGlyph *> &glyphs,

                        qreal pixelSize, Qt::Alignment alignment) const;

    const QSvgGlyph *findFirstGlyphFor(QStringView text) const;

    QList<const QSvgGlyph *> toGlyphs(QStringView text) const;

public:

    QString m_familyName;

    qreal m_unitsPerEm{1000};

    qreal m_horizAdvX;

    // not about a missing <glyph> element, but the font's <missing-glyph> element:

    std::unique_ptr<const QSvgGlyph> m_missingGlyph;

    // The following needs to preserve the order of glyphs because

    // "17.6 Glyph selection rules" in SVG Tiny 1.2 reads:

    // "the 'font' element must be searched from its first

    // 'glyph' element to its last in logical order"

    QList<QSvgGlyph> m_glyphs;

private:

    // to speed up finding glyphs

    mutable QHash<char32_t, QList<qsizetype>> m_possibleGlyphIndicesForChar;

    mutable qsizetype m_firstUnscannedGlyphIdx = 0;

    void draw_helper(QPainter *p, const QPointF &point,

                     const QList<const QSvgGlyph *> &glyphs, qreal pixelSize,

                     Qt::Alignment alignment, QRectF *boundingRect = nullptr) const;

};

QT_END_NAMESPACE

#endif // QSVGFONT_P_H