58 lines
1.5 KiB
C#
58 lines
1.5 KiB
C#
namespace SRF.UI
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{
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using Internal;
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using UnityEngine;
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using UnityEngine.UI;
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/// <summary>
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/// Detects when a screen dpi exceeds what the developer considers
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/// a "retina" level display, and scales the canvas accordingly.
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/// </summary>
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[RequireComponent(typeof (CanvasScaler))]
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[AddComponentMenu(ComponentMenuPaths.RetinaScaler)]
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public class SRRetinaScaler : SRMonoBehaviour
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{
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[SerializeField] private float _retinaScale = 2f;
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[SerializeField] private int _thresholdDpi = 250;
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[SerializeField] private bool _disablePixelPerfect = false;
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/// <summary>
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/// Dpi over which to apply scaling
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/// </summary>
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public int ThresholdDpi
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{
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get { return _thresholdDpi; }
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}
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public float RetinaScale
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{
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get { return _retinaScale; }
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}
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private void Start()
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{
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var dpi = Screen.dpi;
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if (dpi <= 0)
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{
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return;
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}
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if (dpi > ThresholdDpi)
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{
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var scaler = GetComponent<CanvasScaler>();
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scaler.uiScaleMode = CanvasScaler.ScaleMode.ConstantPixelSize;
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scaler.scaleFactor = scaler.scaleFactor * RetinaScale;
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if (_disablePixelPerfect)
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{
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GetComponent<Canvas>().pixelPerfect = false;
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}
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}
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}
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}
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}
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