o3de/Gems/LyShine/Code/Editor/ViewportMoveGuideInteraction.h

/*
 * Copyright (c) Contributors to the Open 3D Engine Project.
 * For complete copyright and license terms please see the LICENSE at the root of this distribution.
 *
 * SPDX-License-Identifier: Apache-2.0 OR MIT
 *
 */
#pragma once

#include "ViewportDragInteraction.h"
#include "ViewportInteraction.h"

#include <LyShine/Bus/UiTransform2dBus.h>

class EditorWindow;

//! Class used while a "Move guide" interaction is in progress in move or anchor mode
class ViewportMoveGuideInteraction
    : public ViewportDragInteraction
{
public:

    ViewportMoveGuideInteraction(
        EditorWindow* editorWindow,
        AZ::EntityId canvasId,
        bool guideIsVertical,
        int guideIndex,
        const AZ::Vector2& startDragMousePos);

    virtual ~ViewportMoveGuideInteraction();

    // ViewportDragInteraction
    void Update(const AZ::Vector2& mousePos) override;
    void Render(Draw2dHelper& draw2d) override;
    void EndInteraction(EndState endState) override;
    // ~ViewportDragInteraction

protected:

    void MoveGuideToMousePos(const AZ::Vector2& mousePos);

protected:

    // State that we will need every frame in the update is cached locally in this object

    EditorWindow* m_editorWindow;
    AZ::EntityId m_canvasId;

    bool m_guideIsVertical = false;
    int m_guideIndex = 0;

    bool m_isSnapping = false;

    float m_startingPosition = 0.0f;

    AZStd::string m_canvasUndoXml;
    AZ::Vector2  m_cursorViewportPos;
};