vnote/src/widgets/framelessmainwindow/framelessmainwindowlinux.h

#ifndef FRAMELESSMAINWINDOWLINUX_H
#define FRAMELESSMAINWINDOWLINUX_H

#include "framelessmainwindow.h"

#include <QRect>
#include <QVector>

namespace vnotex
{
#ifndef Q_OS_WIN
    class FramelessMainWindowLinux : public FramelessMainWindow
    {
        Q_OBJECT
    public:
        FramelessMainWindowLinux(bool p_frameless, QWidget *p_parent = nullptr);

        void setTitleBar(QWidget *p_titleBar) Q_DECL_OVERRIDE;

    protected:
        bool eventFilter(QObject *p_obj, QEvent *p_event) Q_DECL_OVERRIDE;

        void mousePressEvent(QMouseEvent *p_event) Q_DECL_OVERRIDE;

        void mouseReleaseEvent(QMouseEvent *p_event) Q_DECL_OVERRIDE;

        void mouseMoveEvent(QMouseEvent *p_event) Q_DECL_OVERRIDE;

        void showEvent(QShowEvent *p_event) Q_DECL_OVERRIDE;

    private:
        enum Area
        {
            Left = 0,
            TopLeft,
            Top,
            TopRight,
            Right,
            BottomRight,
            Bottom,
            BottomLeft,
            Caption,
            None
        };

        Area hitArea(const QPoint &p_pos) const;

        void doResize(QEvent *p_event);

        void recordMousePress(const QPoint &p_pos);

        const int m_resizeAreaWidth = 6;

        int m_titleBarHeight = 0;

        Area m_mousePressArea = Area::None;

        QPoint m_mousePressPoint;

        bool m_mousePressed = false;

        QRect m_rectOnMousePress;
    };
#else
    class FramelessMainWindowLinuxDummy
    {
    };
#endif
}

#endif // FRAMELESSMAINWINDOWLINUX_H