62 lines
2.1 KiB
C#
62 lines
2.1 KiB
C#
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//
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// BackgroundAdapter.cs
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//
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// Author:
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// fjy <jiyuan.feng@live.com>
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//
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// Copyright (c) 2020 fjy
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System.Diagnostics;
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using UnityEngine;
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using UnityEngine.UI;
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namespace libx
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{
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[ExecuteInEditMode]
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public class BackgroundAdapter : MonoBehaviour
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{
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private CanvasScaler _scaler;
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public void OnStart()
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{
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UpdateScale();
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}
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private void UpdateScale()
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{
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if (_scaler == null) _scaler = GetComponentInParent<CanvasScaler>();
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var resolution = _scaler.referenceResolution;
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var rt = _scaler.transform as RectTransform;
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if (rt == null) return;
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var screenSize = rt.sizeDelta;
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var factor = Mathf.Max(screenSize.x / resolution.x, screenSize.y / resolution.y);
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var scale = Vector3.one * factor;
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transform.localScale = scale;
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}
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[Conditional("UNITY_EDITOR")]
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private void Update()
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{
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UpdateScale();
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}
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}
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}
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