TextMesh Pro Possible to get size and position of a link?

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></link>

and it looks like Image 1.

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)

Any ideas? Thanks.

 

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.

 

Thanks. Got it to work from those examples:

Code (CSharp):

1.  
2. Vector2 CalcLinkCenterPosition()
3.     {
4.         Transform m_Transform = gameObject.GetComponent<Transform>();
5.  
6.         Vector3 bottomLeft = Vector3.zero;
7.         Vector3 topRight = Vector3.zero;
8.  
9.         float maxAscender = -Mathf.Infinity;
10.         float minDescender = Mathf.Infinity;
11.  
12.         TMP_TextInfo textInfo = text.textInfo;
13.         TMP_LinkInfo linkInfo = textInfo.linkInfo[0];
14.         TMP_CharacterInfo currentCharInfo = textInfo.characterInfo[linkInfo.linkTextfirstCharacterIndex];
15.  
16.         maxAscender = Mathf.Max(maxAscender, currentCharInfo.ascender);
17.         minDescender = Mathf.Min(minDescender, currentCharInfo.descender);
18.  
19.         bottomLeft = new Vector3(currentCharInfo.bottomLeft.x, currentCharInfo.descender, 0);
20.  
21.         bottomLeft = m_Transform.TransformPoint(new Vector3(bottomLeft.x, minDescender, 0));
22.         topRight = m_Transform.TransformPoint(new Vector3(currentCharInfo.topRight.x, maxAscender, 0));
23.  
24.         float width = topRight.x - bottomLeft.x;
25.         float height = topRight.y - bottomLeft.y;
26.  
27.         Vector2 centerPosition = bottomLeft;
28.         centerPosition.x += width / 2;
29.         centerPosition.y += height / 2;
30.  
31.         return centerPosition;
32.     }