qsvgfont_p.h - mozsearch

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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

// 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 <QtSvg/private/qsvgnode_p.h>

#include <memory>

QT_BEGIN_NAMESPACE

class Q_SVG_EXPORT QSvgGlyph

public:

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

    QSvgGlyph() = default;

    QString m_unicode;

    QPainterPath m_path;

    qreal m_horizAdvX{0};

};

class Q_SVG_EXPORT QSvgFont : public QSvgNode

public:

    QSvgFont(qreal horizAdvX);

    ~QSvgFont() override;

    Type type() const override { return Font; }

    void setUnitsPerEm(qreal upem);

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

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

    void drawCommand(QPainter *, QSvgExtraStates &) override {};

    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:

    qreal m_unitsPerEm{1000};

    qreal m_horizAdvX{0};

private:

    // 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;

    // 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;

};

using QSvgFontPtr = std::unique_ptr<QSvgFont>;

QT_END_NAMESPACE

#endif // QSVGFONT_P_H