/// <summary>
/// Creates a button, inside a parent, using specific coordinates (based on bottom-left) and size.
/// </summary>
/// <param name="parent">The parent under which the button will be located</param>
/// <param name="position">The button's from-top-bottom position</param>
/// <param name="size">The button's size</param>
/// <param name="caption">The button's settings</param>
/// <param name="name">The button's name</param>
/// <param name="textColor">The button's text color</param>
/// <param name="colors">The button's color settings</param>
/// <param name="fontSize">Optional font size. Will default to half the height</param>
/// <returns>The button being created, or <c>null</c> if arguments are negative or somehow inconsistent</returns>
public static Button AddButton(RectTransform parent, Vector2 position, Vector2 size, string caption, string name, Color textColor, ColorBlock colors, int fontSize = 0)
{
if (size.x <= 0 || size.y <= 0 || position.x < 0 || position.y < 0)
{
return(null);
}
GameObject buttonObject = new GameObject(name);
buttonObject.transform.parent = parent;
RectTransform rectTransformComponent = Behaviours.AddComponent <RectTransform>(buttonObject);
rectTransformComponent.pivot = Vector2.zero;
rectTransformComponent.anchorMin = Vector2.zero;
rectTransformComponent.anchorMax = Vector2.zero;
rectTransformComponent.offsetMin = position;
rectTransformComponent.offsetMax = position;
rectTransformComponent.sizeDelta = size;
rectTransformComponent.localScale = Vector3.one;
Image buttonImageComponent = Behaviours.AddComponent <Image>(buttonObject);
buttonImageComponent.sprite = AssetDatabase.GetBuiltinExtraResource <Sprite>("UI/Skin/UISprite.psd");
buttonImageComponent.type = Image.Type.Sliced;
buttonImageComponent.fillCenter = true;
Button buttonComponent = Behaviours.AddComponent <Button>(buttonObject);
buttonComponent.colors = colors;
buttonComponent.targetGraphic = buttonImageComponent;
GameObject textObject = new GameObject("Text");
textObject.transform.parent = buttonObject.transform;
Text textComponent = Behaviours.AddComponent <Text>(textObject);
textComponent.text = caption;
textComponent.fontSize = (fontSize >= 0) ? fontSize : (int)(size.y / 2);
textComponent.alignment = TextAnchor.MiddleCenter;
textComponent.color = textColor;
RectTransform textRectTransform = textObject.GetComponent <RectTransform>();
textRectTransform.pivot = Vector2.one / 2f;
textRectTransform.anchorMin = Vector2.zero;
textRectTransform.anchorMax = Vector2.one;
textRectTransform.offsetMin = Vector2.zero;
textRectTransform.offsetMax = Vector2.zero;
textRectTransform.localScale = Vector3.one;
return(buttonComponent);
}