qquickanchors_p_p.h

Enable keyboard shortcuts

// 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 QQUICKANCHORS_P_P_H

#define QQUICKANCHORS_P_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 "qquickanchors_p.h"

#include "qquickitemchangelistener_p.h"

#include <private/qobject_p.h>

QT_BEGIN_NAMESPACE

class Q_QUICK_EXPORT QQuickAnchorLine

    Q_GADGET

    QML_ANONYMOUS

    QML_ADDED_IN_VERSION(2, 0)

public:

    QQuickAnchorLine() {}

    QQuickAnchorLine(QQuickItem *i, QQuickAnchors::Anchor l) : item(i), anchorLine(l) {}

    QQuickAnchorLine(QQuickItem *i, uint l)

        : item(i)

        , anchorLine(static_cast<QQuickAnchors::Anchor>(l))

    { Q_ASSERT(l < ((QQuickAnchors::BaselineAnchor << 1) - 1)); }

    QQuickItem *item = nullptr;

    QQuickAnchors::Anchor anchorLine = QQuickAnchors::InvalidAnchor;

};

inline bool operator==(const QQuickAnchorLine& a, const QQuickAnchorLine& b)

    return a.item == b.item && a.anchorLine == b.anchorLine;

class QQuickAnchorsPrivate : public QObjectPrivate,

                             public QSafeQuickItemChangeListener<QQuickAnchorsPrivate>

    Q_DECLARE_PUBLIC(QQuickAnchors)

public:

    QQuickAnchorsPrivate(QQuickItem *i)

        : leftMargin(0)

        , rightMargin(0)

        , topMargin(0)

        , bottomMargin(0)

        , margins(0)

        , vCenterOffset(0)

        , hCenterOffset(0)

        , baselineOffset(0)

        , item(i)

        , fill(nullptr)

        , centerIn(nullptr)

        , leftAnchorItem(nullptr)

        , rightAnchorItem(nullptr)

        , topAnchorItem(nullptr)

        , bottomAnchorItem(nullptr)

        , vCenterAnchorItem(nullptr)

        , hCenterAnchorItem(nullptr)

        , baselineAnchorItem(nullptr)

        , leftAnchorLine(QQuickAnchors::InvalidAnchor)

        , leftMarginExplicit(false)

        , rightAnchorLine(QQuickAnchors::InvalidAnchor)

        , rightMarginExplicit(false)

        , topAnchorLine(QQuickAnchors::InvalidAnchor)

        , topMarginExplicit(false)

        , bottomAnchorLine(QQuickAnchors::InvalidAnchor)

        , bottomMarginExplicit(false)

        , vCenterAnchorLine(QQuickAnchors::InvalidAnchor)

        , updatingMe(false)

        , hCenterAnchorLine(QQuickAnchors::InvalidAnchor)

        , inDestructor(false)

        , baselineAnchorLine(QQuickAnchors::InvalidAnchor)

        , centerAligned(true)

        , usedAnchors(QQuickAnchors::InvalidAnchor)

        , componentComplete(true)

        , updatingFill(0)

        , updatingCenterIn(0)

        , updatingHorizontalAnchor(0)

        , updatingVerticalAnchor(0)

    void clearItem(QQuickItem *);

    QQuickGeometryChange calculateDependency(QQuickItem *) const;

    void addDepend(QQuickItem *);

    void remDepend(QQuickItem *);

    bool isItemComplete() const;

    void setItemHeight(qreal);

    void setItemWidth(qreal);

    void setItemX(qreal);

    void setItemY(qreal);

    void setItemPos(const QPointF &);

    void setItemSize(const QSizeF &);

    void update();

    void updateOnComplete();

    void updateMe();

    // QQuickItemGeometryListener interface

    void itemGeometryChanged(QQuickItem *, QQuickGeometryChange, const QRectF &) override;

    QQuickAnchorsPrivate *anchorPrivate() override { return this; }

    bool checkHValid() const;

    bool checkVValid() const;

    bool checkHAnchorValid(QQuickAnchorLine anchor) const;

    bool checkVAnchorValid(QQuickAnchorLine anchor) const;

    bool calcStretch(QQuickItem *edge1Item, QQuickAnchors::Anchor edge1Line,

                     QQuickItem *edge2Item, QQuickAnchors::Anchor edge2Line,

                     qreal offset1, qreal offset2, QQuickAnchors::Anchor line, qreal &stretch) const;

    bool isMirrored() const;

    void updateHorizontalAnchors();

    void updateVerticalAnchors();

    void fillChanged();

    void centerInChanged();

    qreal leftMargin;

    qreal rightMargin;

    qreal topMargin;

    qreal bottomMargin;

    qreal margins;

    qreal vCenterOffset;

    qreal hCenterOffset;

    qreal baselineOffset;

    QQuickItem *item;

    QQuickItem *fill;

    QQuickItem *centerIn;

    QQuickItem *leftAnchorItem;

    QQuickItem *rightAnchorItem;

    QQuickItem *topAnchorItem;

    QQuickItem *bottomAnchorItem;

    QQuickItem *vCenterAnchorItem;

    QQuickItem *hCenterAnchorItem;

    QQuickItem *baselineAnchorItem;

    // The bit fields below are carefully laid out in chunks of 1 byte, so the compiler doesn't

    // need to generate 2 loads (and combining shifts/ors) to create a single field.

    QQuickAnchors::Anchor leftAnchorLine     : 7;

    uint leftMarginExplicit                  : 1;

    QQuickAnchors::Anchor rightAnchorLine    : 7;

    uint rightMarginExplicit                 : 1;

    QQuickAnchors::Anchor topAnchorLine      : 7;

    uint topMarginExplicit                   : 1;

    QQuickAnchors::Anchor bottomAnchorLine   : 7;

    uint bottomMarginExplicit                : 1;

    QQuickAnchors::Anchor vCenterAnchorLine  : 7;

    uint updatingMe                          : 1;

    QQuickAnchors::Anchor hCenterAnchorLine  : 7;

    uint inDestructor                        : 1;

    QQuickAnchors::Anchor baselineAnchorLine : 7;

    uint centerAligned                       : 1;

    uint usedAnchors                         : 7; // QQuickAnchors::Anchors

    uint componentComplete                   : 1;

    // Instead of using a mostly empty bit field, we can stretch the following fields up to be full

    // bytes. The advantage is that incrementing/decrementing does not need any combining ands/ors.

    qint8 updatingFill;

    qint8 updatingCenterIn;

    qint8 updatingHorizontalAnchor;

    qint8 updatingVerticalAnchor;

    static inline QQuickAnchorsPrivate *get(QQuickAnchors *o) {

        return static_cast<QQuickAnchorsPrivate *>(QObjectPrivate::get(o));

};

QT_END_NAMESPACE

Q_DECLARE_METATYPE(QQuickAnchorLine)

#endif