using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace LB_SmartVisionCommon
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{
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public class FilterManager
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{
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private Dictionary<FilterType, RecordFilterData> _filters;
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private readonly string _dataFilePath;
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private RecordFilterData _currentFilter;
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private static FilterManager _instance;
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/// <summary>
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/// 线程锁
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/// </summary>
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private static readonly object _lock = new object();
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private FilterManager(string dataFilePath = "filters.json")
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{
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_dataFilePath = dataFilePath;
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_filters = new Dictionary<FilterType, RecordFilterData>();
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_currentFilter = null;
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LoadUsers();
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}
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public static FilterManager Instance
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{
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get
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{
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// 双重检查锁定确保线程安全
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if (_instance == null)
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{
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lock (_lock)
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{
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if (_instance == null)
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{
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_instance = new FilterManager();
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}
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}
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}
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return _instance;
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}
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}
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/// <summary>
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/// 添加滤波算子
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/// </summary>
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/// <param name="user"></param>
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/// <returns></returns>
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public bool AddFilter(RecordFilterData filter)
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{
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if (_currentFilter == null)
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{
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_currentFilter = filter;
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}
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try
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{
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RecordFilterData recordFilterData = new RecordFilterData();
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recordFilterData.MaskWidth = filter.MaskWidth;
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recordFilterData.MaskHight = filter.MaskHight;
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recordFilterData.GaussSize = filter.GaussSize;
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recordFilterData.FilterName = filter.FilterName;
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_filters.Add(recordFilterData.FilterName, recordFilterData);
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}
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catch (Exception ex)
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{
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MessageBox.Show("该算子已存在");
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}
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SaveUsers();
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return true;
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}
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/// <summary>
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/// 删除图像增强算子
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/// </summary>
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/// <param name="filterName"></param>
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/// <returns></returns>
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public bool DeleteUser(RecordFilterData filter)
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{
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try
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{
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// 1. 从字典中删除
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if (_filters.ContainsKey(filter.FilterName))
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{
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_filters.Remove(filter.FilterName);
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}
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// 2. 如果删除的是当前滤波，清空_currentFilter
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if (_currentFilter != null && _currentFilter.FilterName == filter.FilterName)
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{
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_currentFilter = null;
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}
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// 3. 保存更改
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SaveUsers();
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return true;
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}
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catch (Exception ex)
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{
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// 记录日志
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Console.WriteLine($"删除滤波失败: {ex.Message}");
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return false;
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}
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}
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/// <summary>
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/// 获取所有用户列表
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/// </summary>
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/// <returns>List<RecordUserData></returns>
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public List<RecordFilterData> GetAllUsers()
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{
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return _filters.Select(u => u.Value.Clone()).ToList();
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}
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#region json文件保存加载
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/// <summary>
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/// 保存用户数据到JSON文件
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/// </summary>
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private void SaveUsers()
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{
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try
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{
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ConfigManager<Dictionary<FilterType, RecordFilterData>>.SaveConfig<Dictionary<FilterType, RecordFilterData>>(_filters, _dataFilePath);
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}
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catch (Exception ex)
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{
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MessageBox.Show($"保存图像增强算子失败：{ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
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}
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}
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/// <summary>
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/// 从JSON文件加载用户数据
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/// </summary>
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private void LoadUsers()
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{
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try
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{
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if (File.Exists(_dataFilePath))
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{
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_filters = ConfigManager<Dictionary<FilterType, RecordFilterData>>.LoadConfig<Dictionary<FilterType, RecordFilterData>>(_dataFilePath) ?? new Dictionary<FilterType, RecordFilterData>();
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}
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}
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catch (Exception ex)
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{
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MessageBox.Show($"加载图像增强算子失败：{ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
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_filters = new Dictionary<FilterType, RecordFilterData>();
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}
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}
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#endregion
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}
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}
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