320 lines
9.7 KiB
C#
320 lines
9.7 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using Kill.UI.Components;
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using UnityEngine;
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using UnityEngine.UI;
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namespace Kill.UI.Pages
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{
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/// <summary>
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/// 二维码扫描器 - 调用摄像头扫描二维码
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/// </summary>
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public class ScanQRcode : MonoBehaviour
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{
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[Header("UI组件")]
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public RawImage cameraPreview; // 摄像头预览
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[Header("扫描设置")]
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public float scanInterval = 0.2f; // 扫描间隔（秒）
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// 摄像头相关
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private WebCamTexture webCamTexture;
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private bool isScanning = false;
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// 扫描结果回调
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public event Action<string> OnQRCodeScanned;
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void OnEnable()
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{
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StartScan();
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}
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void OnDisable()
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{
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StopScan();
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}
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/// <summary>
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/// 开始扫描
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/// </summary>
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public void StartScan()
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{
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if (isScanning) return;
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StartCoroutine(InitializeCamera());
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}
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/// <summary>
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/// 停止扫描
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/// </summary>
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public void StopScan()
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{
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isScanning = false;
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StopAllCoroutines();
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if (webCamTexture != null && webCamTexture.isPlaying)
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{
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webCamTexture.Stop();
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webCamTexture = null;
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}
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}
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/// <summary>
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/// 关闭扫码界面
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/// </summary>
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public void Close()
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{
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StopScan();
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gameObject.SetActive(false);
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}
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/// <summary>
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/// 初始化摄像头
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/// </summary>
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private IEnumerator InitializeCamera()
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{
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// Android 使用 Permission API 请求权限
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#if UNITY_ANDROID && !UNITY_EDITOR
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if (!UnityEngine.Android.Permission.HasUserAuthorizedPermission(UnityEngine.Android.Permission.Camera))
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{
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UnityEngine.Android.Permission.RequestUserPermission(UnityEngine.Android.Permission.Camera);
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// 等待权限请求结果
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yield return new WaitUntil(() => UnityEngine.Android.Permission.HasUserAuthorizedPermission(UnityEngine.Android.Permission.Camera));
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}
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if (!UnityEngine.Android.Permission.HasUserAuthorizedPermission(UnityEngine.Android.Permission.Camera))
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{
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UpdateStatus("100085");
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yield break;
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}
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#else
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// 其他平台使用传统方式
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yield return Application.RequestUserAuthorization(UserAuthorization.WebCam);
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if (!Application.HasUserAuthorization(UserAuthorization.WebCam))
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{
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UpdateStatus("100085");
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yield break;
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}
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#endif
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// 获取后置摄像头
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WebCamDevice[] devices = WebCamTexture.devices;
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if (devices.Length == 0)
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{
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UpdateStatus("100086");
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yield break;
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}
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// 优先使用后置摄像头
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string deviceName = devices[0].name;
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for (int i = 0; i < devices.Length; i++)
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{
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if (!devices[i].isFrontFacing)
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{
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deviceName = devices[i].name;
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break;
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}
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}
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// 创建摄像头纹理
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webCamTexture = new WebCamTexture(deviceName, 1280, 720, 30);
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cameraPreview.texture = webCamTexture;
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// 开始播放
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webCamTexture.Play();
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// 等待摄像头启动
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yield return new WaitUntil(() => webCamTexture.width > 100);
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// 调整预览画面比例
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AdjustPreviewAspect();
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isScanning = true;
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// 开始扫描
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StartCoroutine(ScanCoroutine());
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}
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/// <summary>
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/// 调整预览画面比例
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/// </summary>
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private void AdjustPreviewAspect()
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{
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if (webCamTexture == null) return;
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float videoRatio = (float)webCamTexture.width / webCamTexture.height;
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float screenRatio = (float)Screen.width / Screen.height;
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// 根据摄像头方向调整
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int rotation = webCamTexture.videoRotationAngle;
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cameraPreview.rectTransform.localEulerAngles = new Vector3(0, 0, -rotation);
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// 调整缩放以适应屏幕
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if (rotation == 90 || rotation == 270)
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{
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videoRatio = 1f / videoRatio;
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}
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// 保持比例填充
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if (videoRatio > screenRatio)
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{
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cameraPreview.rectTransform.localScale = new Vector3(screenRatio / videoRatio, 1, 1);
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}
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else
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{
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cameraPreview.rectTransform.localScale = new Vector3(1, videoRatio / screenRatio, 1);
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}
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}
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/// <summary>
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/// 扫描协程
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/// </summary>
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private IEnumerator ScanCoroutine()
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{
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// 等待一帧确保摄像头已准备好
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yield return null;
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while (isScanning && webCamTexture != null && webCamTexture.isPlaying)
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{
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// 获取当前帧
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Texture2D snapshot = GetSnapshot();
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if (snapshot != null)
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{
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// 解析二维码
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string result = DecodeQRCode(snapshot);
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Destroy(snapshot);
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if (!string.IsNullOrEmpty(result))
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{
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// 从结果中提取 MAC 地址
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string macAddress = ExtractMacAddress(result);
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if (!string.IsNullOrEmpty(macAddress))
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{
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// 扫描成功，仅回传 MAC 地址
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OnQRCodeScanned?.Invoke(macAddress);
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yield break;
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}
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else
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{
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// 二维码不符合要求，显示提示
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UpdateStatus("100084");
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}
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}
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}
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yield return new WaitForSeconds(scanInterval);
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}
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}
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/// <summary>
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/// 获取摄像头当前帧
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/// </summary>
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private Texture2D GetSnapshot()
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{
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if (webCamTexture == null || !webCamTexture.isPlaying) return null;
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try
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{
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Texture2D snapshot = new Texture2D(webCamTexture.width, webCamTexture.height);
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snapshot.SetPixels(webCamTexture.GetPixels());
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snapshot.Apply();
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return snapshot;
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}
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catch
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{
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return null;
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}
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}
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/// <summary>
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/// 解析二维码
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/// </summary>
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private string DecodeQRCode(Texture2D texture)
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{
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try
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{
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int width = texture.width;
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int height = texture.height;
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// 获取像素数据
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Color32[] pixels = texture.GetPixels32();
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// 转换为灰度图
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byte[] grayscale = new byte[width * height];
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for (int i = 0; i < pixels.Length; i++)
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{
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// 使用标准亮度公式: Y = 0.299R + 0.587G + 0.114B
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grayscale[i] = (byte)(0.299f * pixels[i].r + 0.587f * pixels[i].g + 0.114f * pixels[i].b);
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}
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// 创建 LuminanceSource
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var luminanceSource = new ZXing.PlanarYUVLuminanceSource(
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grayscale,
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width,
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height,
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0,
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0,
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width,
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height,
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false
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);
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// 创建 BinaryBitmap
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var binarizer = new ZXing.Common.HybridBinarizer(luminanceSource);
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var binaryBitmap = new ZXing.BinaryBitmap(binarizer);
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// 解码
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var reader = new ZXing.QrCode.QRCodeReader();
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var hints = new Dictionary<ZXing.DecodeHintType, object>
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{
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{ ZXing.DecodeHintType.TRY_HARDER, true }
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};
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var result = reader.decode(binaryBitmap, hints);
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return result?.Text;
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}
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catch (Exception ex)
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{
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Debug.LogError($"二维码解析失败: {ex.Message}");
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return null;
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}
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}
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/// <summary>
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/// 从字符串中提取 MAC 地址（格式如 98:EA:A0:02:4E:06）
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/// </summary>
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private string ExtractMacAddress(string input)
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{
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if (string.IsNullOrEmpty(input))
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return null;
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// MAC 地址正则表达式：匹配 XX:XX:XX:XX:XX:XX 格式（X 为十六进制字符）
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System.Text.RegularExpressions.Regex macRegex =
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new System.Text.RegularExpressions.Regex(@"[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}:[0-9A-Fa-f]{2}");
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System.Text.RegularExpressions.Match match = macRegex.Match(input);
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if (match.Success)
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{
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// 返回大写的 MAC 地址
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return match.Value.ToUpper();
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}
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return null;
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}
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/// <summary>
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/// 更新状态文字
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/// </summary>
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private void UpdateStatus(string code)
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{
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ToastUI.Show(code);
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}
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void OnDestroy()
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{
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StopScan();
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gameObject.SetActive(false);
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}
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}
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}
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