tickmarkcontainer.h

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// Copyright (C) 2024 The Qt Company Ltd.

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

#ifndef TICKMARKCONTAINER_H

#define TICKMARKCONTAINER_H

#include <QQmlComponent>

#include <QQuickItem>

#include "valuerange.h"

QT_BEGIN_NAMESPACE

class TickmarkContainer : public QQuickItem

    Q_OBJECT

    Q_PROPERTY(QQmlComponent *delegate READ delegate WRITE setDelegate NOTIFY delegateChanged REQUIRED FINAL)

    Q_PROPERTY(int count READ count WRITE setCount NOTIFY countChanged REQUIRED FINAL)

    Q_PROPERTY(ValueRange *valueRange READ valueRange WRITE setValueRange NOTIFY valueRangeChanged REQUIRED FINAL)

    Q_PROPERTY(Qt::Orientation orientation READ orientation WRITE setOrientation NOTIFY orientationChanged REQUIRED FINAL)

    QML_ELEMENT

public:

    TickmarkContainer(QQuickItem *parent = nullptr);

    virtual ~TickmarkContainer() = default;

    QQmlComponent *delegate() const;

    void setDelegate(QQmlComponent *delegate);

    int count() const;

    void setCount(int count);

    ValueRange *valueRange() const;

    void setValueRange(ValueRange *valueRange);

    bool isVertical() const;

    Qt::Orientation orientation() const;

    void setOrientation(Qt::Orientation orientation);

    enum class DelegateItemDirtyFlag {

        NotDirty = 1 << 0,

        FontDirty = 2 << 0,

        ValueDirty = 3 << 0,

        GeometryDirty = 4 << 0,

        // Intentionally not OR'd as it means we need to just recreate every label.

        AllDirty = 5 << 0

};

    Q_DECLARE_FLAGS(DelegateItemDirtyFlags, DelegateItemDirtyFlag)

    QQuickItem *delegateItemAt(int index) const;

Q_SIGNALS:

    void delegateChanged();

    void countChanged();

    void valueRangeChanged();

    void orientationChanged();

protected:

    void componentComplete() override;

    void geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry) override;

    void updatePolish() override;

    Q_DISABLE_COPY(TickmarkContainer)

    void destroyDelegateItems();

    qreal spacing() const;

    virtual int totalDelegateItemCount() const;

    virtual qreal valueForDelegateItemAt(int index) const;

    virtual QPointF positionForDelegateItemAt(int index) const;

    virtual void updateSizes(int largestImplicitSize);

    virtual void recreateDelegateItems();

    void makeDirtyAndPolish(DelegateItemDirtyFlags dirtyFlagsToOR);

    QQmlComponent *mDelegate = nullptr;

    // Major tickmark count.

    int mCount = 0;

    ValueRange *mValueRange = nullptr;

    Qt::Orientation mOrientation = Qt::Vertical;

    QList<QQuickItem *> mDelegateItems;

    DelegateItemDirtyFlags mDirtyFlags;

};

Q_DECLARE_OPERATORS_FOR_FLAGS(TickmarkContainer::DelegateItemDirtyFlags)

QT_END_NAMESPACE

#endif // TICKMARKCONTAINER_H