86 lines
3.3 KiB
C#
86 lines
3.3 KiB
C#
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// Copyright (c) Pixel Crushers. All rights reserved.
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using UnityEngine;
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namespace PixelCrushers
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{
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public static class UIUtility
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{
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/// <summary>
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/// Ensures that the scene has an EventSystem.
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/// </summary>
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/// <param name="message">If needing to add an EventSystem, show this message.</param>
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public static void RequireEventSystem(string message = null)
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{
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var eventSystem = GameObjectUtility.FindFirstObjectByType<UnityEngine.EventSystems.EventSystem>();
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if (eventSystem == null)
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{
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if (message != null) Debug.LogWarning(message);
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eventSystem = new GameObject("EventSystem").AddComponent<UnityEngine.EventSystems.EventSystem>();
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#if USE_NEW_INPUT
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var inputModule = eventSystem.gameObject.AddComponent<UnityEngine.InputSystem.UI.InputSystemUIInputModule>();
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#else
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var inputModule = eventSystem.gameObject.AddComponent<UnityEngine.EventSystems.StandaloneInputModule>();
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#if !UNITY_2020_1_OR_NEWER
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inputModule.forceModuleActive = true;
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#endif
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#endif
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}
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}
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/// <summary>
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/// Sets the EventSystem to use for all IEventSystemUsers in a hierarchy.
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/// </summary>
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public static void SetEventSystemInChildren(Transform t, UnityEngine.EventSystems.EventSystem eventSystem)
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{
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if (t == null) return;
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var eventSystemUser = t.GetComponent<IEventSystemUser>();
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if (eventSystemUser != null) eventSystemUser.eventSystem = eventSystem;
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foreach (Transform child in t)
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{
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SetEventSystemInChildren(child, eventSystem);
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}
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}
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public static int GetAnimatorNameHash(AnimatorStateInfo animatorStateInfo)
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{
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#if UNITY_4_3 || UNITY_4_5 || UNITY_4_6 || UNITY_4_7
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return animatorStateInfo.nameHash;
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#else
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return animatorStateInfo.fullPathHash;
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#endif
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}
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/// <summary>
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/// Selects a Selectable UI element and visually shows it as selected.
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/// </summary>
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/// <param name="selectable"></param>
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/// <param name="allowStealFocus"></param>
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public static void Select(UnityEngine.UI.Selectable selectable, bool allowStealFocus = true,
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UnityEngine.EventSystems.EventSystem eventSystem = null)
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{
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var currentEventSystem = (eventSystem != null) ? eventSystem : UnityEngine.EventSystems.EventSystem.current;
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if (currentEventSystem == null || selectable == null) return;
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if (currentEventSystem.alreadySelecting) return;
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if (currentEventSystem.currentSelectedGameObject == null || allowStealFocus)
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{
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UnityEngine.EventSystems.EventSystem.current = currentEventSystem;
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currentEventSystem.SetSelectedGameObject(selectable.gameObject);
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selectable.Select();
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selectable.OnSelect(null);
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}
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}
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public static Font GetDefaultFont()
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{
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var majorVersion = SafeConvert.ToInt(Application.unityVersion.Split('.')[0]);
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var fontName = (majorVersion >= 2022) ? "LegacyRuntime.ttf" : "Arial.ttf";
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return Resources.GetBuiltinResource<Font>(fontName);
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}
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}
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}
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