FluentUI/src/FluFrameless.h

#pragma once

#include <QObject>
#include <QQuickItem>
#include <QAbstractNativeEventFilter>
#include <QQmlProperty>
#include "stdafx.h"

#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
using QT_NATIVE_EVENT_RESULT_TYPE = qintptr;
using QT_ENTER_EVENT_TYPE = QEnterEvent;
#else
using QT_NATIVE_EVENT_RESULT_TYPE = long;
using QT_ENTER_EVENT_TYPE = QEvent;
#endif

class FluFrameless : public QQuickItem, QAbstractNativeEventFilter {
    Q_OBJECT
    Q_PROPERTY_AUTO_P(QQuickItem *, appbar)
    Q_PROPERTY_AUTO_P(QQuickItem *, maximizeButton)
    Q_PROPERTY_AUTO_P(QQuickItem *, minimizedButton)
    Q_PROPERTY_AUTO_P(QQuickItem *, closeButton)
    Q_PROPERTY_AUTO(bool, topmost)
    Q_PROPERTY_AUTO(bool, disabled)
    Q_PROPERTY_AUTO(bool, fixSize)
    QML_NAMED_ELEMENT(FluFrameless)
public:
    explicit FluFrameless(QQuickItem *parent = nullptr);

    ~FluFrameless() override;

    void componentComplete() override;

    [[maybe_unused]] bool nativeEventFilter(const QByteArray &eventType, void *message,
                                            QT_NATIVE_EVENT_RESULT_TYPE *result) override;

    [[maybe_unused]] Q_INVOKABLE void showFullScreen();

    Q_INVOKABLE void showMaximized();

    [[maybe_unused]] Q_INVOKABLE void showMinimized();

    Q_INVOKABLE void showNormal();

    Q_INVOKABLE void setHitTestVisible(QQuickItem *);

    [[maybe_unused]] Q_INVOKABLE void onDestruction();

protected:
    bool eventFilter(QObject *obj, QEvent *event) override;

private:
    bool _isFullScreen();

    bool _isMaximized();

    void _updateCursor(int edges);

    void _setWindowTopmost(bool topmost);

    void _showSystemMenu(QPoint point);

    bool _hitAppBar();

    bool _hitMaximizeButton();

    void _setMaximizePressed(bool val);

    void _setMaximizeHovered(bool val);

private:
    quint64 _current = 0;
    int _edges = 0;
    int _margins = 8;
    quint64 _clickTimer = 0;
    bool _isWindows11OrGreater = false;
    QList<QPointer<QQuickItem>> _hitTestList;
};