Possible to get size and position of a link?

Unity Engine
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1

I currently have a help icon that appears next to some titles in my project The link is a sprite at the end of a string of text, for example: The Title of the Section<link=helplink_1><sprite=1>

and it looks like Image 1.
4067329--354298--Comments_1.png
When you click on the sprite, a help box pops up. It currently uses pointerEventData.position to position the help box, but I would love to have it based on the center of the sprite. (Image 2)
4067329--354301--Comments_2.png
Any ideas? Thanks.

2

You should be able to get the position of the sprite / character. Then using the characterInfo[index] of that character / sprite use the bottom left and top right position to determine the appropriate position.

Also take a look at Example 12 and 12a included with the TMP Examples and Extras.

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3

Thanks. Got it to work from those examples:

Vector2 CalcLinkCenterPosition()
    {
        Transform m_Transform = gameObject.GetComponent<Transform>();

        Vector3 bottomLeft = Vector3.zero;
        Vector3 topRight = Vector3.zero;

        float maxAscender = -Mathf.Infinity;
        float minDescender = Mathf.Infinity;

        TMP_TextInfo textInfo = text.textInfo;
        TMP_LinkInfo linkInfo = textInfo.linkInfo[0];
        TMP_CharacterInfo currentCharInfo = textInfo.characterInfo[linkInfo.linkTextfirstCharacterIndex];

        maxAscender = Mathf.Max(maxAscender, currentCharInfo.ascender);
        minDescender = Mathf.Min(minDescender, currentCharInfo.descender);

        bottomLeft = new Vector3(currentCharInfo.bottomLeft.x, currentCharInfo.descender, 0);

        bottomLeft = m_Transform.TransformPoint(new Vector3(bottomLeft.x, minDescender, 0));
        topRight = m_Transform.TransformPoint(new Vector3(currentCharInfo.topRight.x, maxAscender, 0));

        float width = topRight.x - bottomLeft.x;
        float height = topRight.y - bottomLeft.y;

        Vector2 centerPosition = bottomLeft;
        centerPosition.x += width / 2;
        centerPosition.y += height / 2;

        return centerPosition;
    }
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