/*
* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
* its licensors.
*
* For complete copyright and license terms please see the LICENSE at the root of this
* distribution (the "License"). All use of this software is governed by the License,
* or, if provided, by the license below or the license accompanying this file. Do not
* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
*/
#pragma once

#include <AzCore/Math/Vector2.h>
#include <LyShine/IDraw2d.h>

//! Abstract base class for drag interactions in the UI Editor viewport window.
class ViewportDragInteraction
{
public:

    enum class EndState
    {
        Inside,
        OutsideX, //!< Outside only on the X-axis
        OutsideY, //!< Outside only on the Y-axis
        OutsideXY, //!< Outside on both the X-axis and the Y-axis
        Canceled
    };

public:

    ViewportDragInteraction(const AZ::Vector2& startMousePos);
    virtual ~ViewportDragInteraction();

    //! Update the interaction each time the mouse moves
    virtual void Update(const AZ::Vector2& mousePos) = 0;

    //! Render any display desired during the interaction
    virtual void Render(Draw2dHelper& draw2d);

    //! End the interaction
    virtual void EndInteraction(EndState endState);

protected:

    AZ::Vector2 m_startMousePos;
};