// Unity C# reference source

// Copyright (c) Unity Technologies. For terms of use, see

// https://unity3d.com/legal/licenses/Unity_Reference_Only_License

using UnityEngine;

using UnityEngine.UIElements;

using RequiredByNativeCodeAttribute = UnityEngine.Scripting.RequiredByNativeCodeAttribute;

namespace UnityEditor.UIElements

{

static class Tooltip

{

[RequiredByNativeCode]

internal static void SetTooltip(float mouseX, float mouseY)

{

//mouseX,mouseY are screen relative.

GUIView view = GUIView.mouseOverView;

if (view != null && view.windowBackend != null)

{

// Pick expect view relative coordinates.

string tooltip;

Rect screenRectPosition;

if (view.windowBackend.GetTooltip(new Vector2(mouseX, mouseY) - view.screenPosition.position,

out tooltip, out screenRectPosition))

{

GUIStyle.SetMouseTooltip(tooltip, screenRectPosition);

}

}

}

}

}