qstyle_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 QSTYLE_P_H

#define QSTYLE_P_H

#include "private/qobject_p.h"

#include <QtWidgets/qstyle.h>

QT_BEGIN_NAMESPACE

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists for the convenience

// of qstyle_*.cpp.  This header file may change from version to version

// without notice, or even be removed.

//

// We mean it.

//

// Private class

class QStyle;

class QStylePrivate: public QObjectPrivate

    Q_DECLARE_PUBLIC(QStyle)

public:

    static QStylePrivate *get(QStyle *s) { return s ? s->d_func() : nullptr; }

    static const QStylePrivate *get(const QStyle *s) { return s ? s->d_func() : nullptr; }

    static bool useFullScreenForPopup();

    QStyle *proxyStyle;

    QString name;

};

inline QPixmap styleCachePixmap(const QSize &size, qreal pixelRatio)

    QPixmap cachePixmap = QPixmap(size * pixelRatio);

    cachePixmap.setDevicePixelRatio(pixelRatio);

    cachePixmap.fill(Qt::transparent);

    return cachePixmap;

// small helper to read out the pixmap to paint from QPixmapCache or re-draw

// it and put it into the QPixmapCache for later usage

class Q_WIDGETS_EXPORT QCachedPainter

public:

    QCachedPainter(QPainter *painter, const QString &cachePrefix,

                   const QStyleOption *option, QSize size = {}, QRect paintRect = {});

    ~QCachedPainter();

    void finish();

    bool needsPainting() const

        return !m_alreadyCached;

    QRect pixmapRect() const

        const auto sz = m_pixmap.deviceIndependentSize();

        return QRect(0, 0, sz.width(), sz.height());

    QPainter *operator->()

        return painter();

    QPainter *painter()

        Q_ASSERT_X(m_pixmapPainter, "painter()", "Must only be called when painting on a pixmap to cache");

        return m_pixmapPainter.get();

    // clean pixmap cache from all cached pixmaps (e.g. due to palette change)

    // to make sure the widgets are painted correctly afterwards

    static void cleanupPixmapCache();

private:

    QPainter *m_painter = nullptr;

    const QStyleOption *m_option = nullptr;

    std::unique_ptr<QPainter> m_pixmapPainter;

    QString m_pixmapName;

    QPixmap m_pixmap;

    QRect m_paintRect;

    bool m_alreadyCached;

    bool m_pixmapDrawn = false;

    static QSet<QString> s_pixmapCacheKeys;

};

QT_END_NAMESPACE

#endif //QSTYLE_P_H