o3de/Gems/LyShine/Code/Editor/CanvasHelpers.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 <AzToolsFramework/API/ToolsApplicationAPI.h>

namespace CanvasHelpers
{
    //! Begin an undoable canvas change
    AZStd::string BeginUndoableCanvasChange(AZ::EntityId canvasEntityId);

    //! End an undoable canvas change
    void EndUndoableCanvasChange(EditorWindow* editorWindow, const char* commandName, AZStd::string& canvasUndoXml);

    //! Given a point in canvas space return the point in viewport space
    AZ::Vector2 GetViewportPoint(AZ::EntityId canvasEntityId, const AZ::Vector2& canvasPoint);

    //! Given a point in viewport space convert to canvas space and snap. If snapToGrid is true it snaps to canvas snap distance, else to nearest pixel
    AZ::Vector2 GetSnappedCanvasPoint(AZ::EntityId canvasEntityId, const AZ::Vector2& viewportPoint, bool snapToGrid);

}   // namespace CanvasHelpers