Anchor to Top/Left, ignore Right/Bottom

[UndercoverDesigns]

I'm creating some player buttons dynamically, and have that part down pat.  I've got a UISprite object that will host the buttons created.

I want the first button to align to 20px of the left and -20 px of the top of the ButtonHost object, but I want the button to keep it's width and height, so not anchor to the right/bottom of the parent.

Then, if this is a subsequent button, it needs to align to the previous one (which works correctly).

My code is:

1. if (Players.Count == 0) {
2.         // We have to set the anchor to the listGridRoot
3.         PlayerButtonSprite.SetAnchor(ButtonHost, 20, 20, -20, -20);
4. } else {
5.         // we have to set the anchor to the previous player button
6.         GameObject PreviousPlayerButton = Players [Players.Count - 1].Button;
7.  
8.         PlayerButtonSprite.SetAnchor(PreviousPlayerButton, 0, -50, 0, -50);
9. }

As a follow-on, how would I expand the ButtonHost item to surround all of the created buttons?

[ArenMook]

This code will anchor only the top and left sides, leaving right and bottom sides not anchored:

1. PlayerButtonSprite.leftAnchor.target = PreviousPlayerButton;
2. PlayerButtonSprite.leftAnchor.Set(0f, 20f); // 0 = left side, +20 pixels
3.  
4. PlayerButtonSprite.topAnchor.target = PreviousPlayerButton;
5. PlayerButtonSprite.topAnchor.Set(1f, -20f); // 1 = top side, -20 pixels
6.  
7. // Re-calculate the widget's anchors using the current values
8. PlayerButtonSprite.ResetAnchors();
9. PlayerButtonSprite.UpdateAnchors();

...however you mentioned that you want to keep the width and height. And the only way to keep them is to anchor all 4 sides. Anchor left to left, right to left, top to top, bottom to top.

1. // Save desired width and height
2. int width = PlayerButtonSprite.width;
3. int height = PlayerButtonSprite.height;
4.  
5. // Anchor left to left
6. PlayerButtonSprite.leftAnchor.target = PreviousPlayerButton;
7. PlayerButtonSprite.leftAnchor.Set(0f, 20f);
8.  
9. // Anchor right to left
10. PlayerButtonSprite.rightAnchor.target = PreviousPlayerButton;
11. PlayerButtonSprite.rightAnchor.Set(0f, 20f + width);
12.  
13. // Anchor top to top
14. PlayerButtonSprite.topAnchor.target = PreviousPlayerButton;
15. PlayerButtonSprite.topAnchor.Set(1f, -20f);
16.  
17. // Anchor bottom to top
18. PlayerButtonSprite.bottomAnchor.target = PreviousPlayerButton;
19. PlayerButtonSprite.bottomAnchor.Set(1f, -20f + height);