81 lines
2.2 KiB
C#
81 lines
2.2 KiB
C#
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using UnityEngine;
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using Lean.Common;
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namespace Lean.Gui
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{
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/// <summary>This component will automatically constrain the current <b>RectTransform</b> to its parent.</summary>
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[HelpURL(LeanGui.HelpUrlPrefix + "LeanConstrainToParent")]
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[AddComponentMenu(LeanGui.ComponentMenuPrefix + "Constrain To Parent")]
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public class LeanConstrainToParent : MonoBehaviour
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{
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/// <summary>Constrain horizontally?</summary>
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public bool Horizontal { set { horizontal = value; } get { return horizontal; } } [SerializeField] private bool horizontal = true;
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/// <summary>Constrain vertically?</summary>
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public bool Vertical { set { vertical = value; } get { return vertical; } } [SerializeField] private bool vertical = true;
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[System.NonSerialized]
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private RectTransform cachedParentRectTransform;
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[System.NonSerialized]
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private RectTransform cachedRectTransform;
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protected virtual void OnEnable()
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{
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cachedRectTransform = GetComponent<RectTransform>();
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}
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protected virtual void LateUpdate()
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{
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if (cachedParentRectTransform != cachedRectTransform.parent)
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{
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cachedParentRectTransform = cachedRectTransform.parent as RectTransform;
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}
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if (cachedParentRectTransform != null)
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{
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var anchoredPosition = cachedRectTransform.anchoredPosition;
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var rect = cachedRectTransform.rect;
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var boundary = cachedParentRectTransform.rect;
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if (horizontal == true)
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{
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boundary.xMin -= rect.xMin;
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boundary.xMax -= rect.xMax;
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anchoredPosition.x = Mathf.Clamp(anchoredPosition.x, boundary.xMin, boundary.xMax);
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}
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if (vertical == true)
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{
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boundary.yMin -= rect.yMin;
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boundary.yMax -= rect.yMax;
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anchoredPosition.y = Mathf.Clamp(anchoredPosition.y, boundary.yMin, boundary.yMax);
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}
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cachedRectTransform.anchoredPosition = anchoredPosition;
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}
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}
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}
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}
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#if UNITY_EDITOR
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namespace Lean.Gui.Editor
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{
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using TARGET = LeanConstrainToParent;
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[UnityEditor.CanEditMultipleObjects]
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[UnityEditor.CustomEditor(typeof(TARGET))]
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public class LeanConstrainToParent_Editor : LeanEditor
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{
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protected override void OnInspector()
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{
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TARGET tgt; TARGET[] tgts; GetTargets(out tgt, out tgts);
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Draw("horizontal", "Constrain horizontally?");
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Draw("vertical", "Constrain vertically?");
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}
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}
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}
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#endif
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