public override void OnInspectorGUI()
{
obj = target as RichText;
base.OnInspectorGUI();
EditorGUILayout.ObjectField("图集：", obj.spriteFont, typeof(UnityEngine.Object), true, GUILayout.ExpandWidth(true));
if (GUILayout.Button("打印宽高"))
{
var size = obj.GetViewSize();
var scale = obj.canvas ? obj.canvas.transform.localScale : Vector3.one;
Debug.LogFormat("size={0},scale = {1}", size, scale);
}
}