DraggablePopup.hpp

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#pragma once

#include "widgets/BaseWindow.hpp"

#include <QPoint>
#include <QTimer>

#include <memory>

namespace chatterino {

class DraggablePopup : public BaseWindow
{
    Q_OBJECT

public:
    DraggablePopup(bool closeAutomatically, QWidget *parent);

protected:
    void mousePressEvent(QMouseEvent *event) override;
    void mouseReleaseEvent(QMouseEvent *event) override;
    void mouseMoveEvent(QMouseEvent *event) override;

    // lifetimeHack_ is used to check that the window hasn't been destroyed yet
    std::shared_ptr<bool> lifetimeHack_;

private:
    // isMoving_ is set to true if the user is holding the left mouse button down and has moved the mouse a small amount away from the original click point (startPosDrag_)
    bool isMoving_ = false;

    // startPosDrag_ is the coordinates where the user originally pressed the mouse button down to start dragging
    QPoint startPosDrag_;

    // requestDragPos_ is the final screen coordinates where the widget should be moved to.
    // Takes the relative position of where the user originally clicked the widget into account
    QPoint requestedDragPos_;

    // dragTimer_ is called ~60 times per second once the user has initiated dragging
    QTimer dragTimer_;
};

}  // namespace chatterino