386 lines
15 KiB
C#
386 lines
15 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Windows.Forms;
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using JoyD.Windows.CS.Toprie;
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namespace JoyD.Windows.CS
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{
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/// <summary>
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/// 预览窗口类，用于显示图像或数据预览
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/// </summary>
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public partial class preview : Form
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{
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// 原始温度数据矩阵尺寸
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private const int DATA_WIDTH = 256;
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private const int DATA_HEIGHT = 192;
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// 热力图显示尺寸
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private const int DISPLAY_WIDTH = 512;
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private const int DISPLAY_HEIGHT = 384;
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// 鼠标当前指向的数据点坐标
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private Point _currentDataPoint = new Point(-1, -1);
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// 用于保护_currentDataPoint访问的锁对象
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private readonly object _dataPointLock = new object();
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// 最新的温度数据
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private TemperatureData _temperatureData = null;
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// 标题栏更新防抖相关字段
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private Timer _titleUpdateTimer = null;
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private float _pendingTemperature = float.NaN;
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private float _currentDisplayedTemperature = float.NaN;
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private const int TITLE_UPDATE_DELAY = 50; // 防抖延迟时间（毫秒）
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/// <summary>
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/// 初始化预览窗口的构造函数
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/// </summary>
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public preview()
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{
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InitializeComponent();
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previewImageBox.MouseMove += PreviewImageBox_MouseMove;
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previewImageBox.MouseLeave += PreviewImageBox_MouseLeave;
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previewImageBox.Paint += PreviewImageBox_Paint;
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// 初始化标题栏更新防抖定时器
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_titleUpdateTimer = new Timer();
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_titleUpdateTimer.Interval = TITLE_UPDATE_DELAY;
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_titleUpdateTimer.Tick += TitleUpdateTimer_Tick;
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}
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/// <summary>
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/// 动态更新预览图像（线程安全）
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/// </summary>
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/// <param name="image">要显示的图像</param>
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public void UpdateImage(Image image)
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{
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if (this.InvokeRequired)
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{
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this.Invoke(new Action<Image>(UpdateImage), image);
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return;
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}
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try
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{
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// 释放旧图像资源
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if (previewImageBox.Image != null)
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{
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previewImageBox.Image.Dispose();
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previewImageBox.Image = null;
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}
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// 克隆新图像
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if (image != null)
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{
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previewImageBox.Image = (Image)image.Clone();
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}
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// 图像更新后，确保重绘以保持覆盖层正确
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previewImageBox.Invalidate();
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}
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catch (Exception ex)
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{
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Console.WriteLine($"更新预览图像时出错: {ex.Message}");
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}
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}
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/// <summary>
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/// 更新温度数据（线程安全）
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/// </summary>
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/// <param name="temperatureData">温度数据</param>
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public void UpdateTemperatureData(TemperatureData temperatureData)
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{
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if (this.InvokeRequired)
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{
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this.Invoke(new Action<TemperatureData>(UpdateTemperatureData), temperatureData);
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return;
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}
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// 更新温度数据
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_temperatureData = temperatureData;
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// 温度数据更新后，自动重新计算当前鼠标指向点的温度
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lock (_dataPointLock)
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{
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if (_currentDataPoint.X >= 0 && _currentDataPoint.Y >= 0)
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{
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// 重新获取温度值并使用防抖机制更新标题栏
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float temperature = GetTemperatureAtDataPoint(_currentDataPoint);
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UpdateTitleBarWithDebounce(temperature);
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}
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}
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}
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/// <summary>
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/// 窗口关闭时释放资源
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/// </summary>
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protected override void OnFormClosed(FormClosedEventArgs e)
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{
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base.OnFormClosed(e);
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// 移除事件绑定
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previewImageBox.MouseMove -= PreviewImageBox_MouseMove;
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previewImageBox.MouseLeave -= PreviewImageBox_MouseLeave;
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previewImageBox.Paint -= PreviewImageBox_Paint;
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// 释放定时器资源
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if (_titleUpdateTimer != null)
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{
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_titleUpdateTimer.Stop();
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_titleUpdateTimer.Dispose();
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_titleUpdateTimer = null;
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}
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// 释放图像资源
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if (previewImageBox.Image != null)
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{
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previewImageBox.Image.Dispose();
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previewImageBox.Image = null;
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}
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}
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// 标题栏更新防抖处理
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private void UpdateTitleBarWithDebounce(float temperature)
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{
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// 只有当温度值实际变化时才更新
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// 检查NaN情况：如果两者都是NaN，认为没有变化
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if (float.IsNaN(temperature) && float.IsNaN(_currentDisplayedTemperature))
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{
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return; // 都是NaN，不需要更新
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}
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// 检查数值变化：如果都是有效数字且差异小于阈值，认为没有变化
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if (!float.IsNaN(temperature) && !float.IsNaN(_currentDisplayedTemperature) &&
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Math.Abs(temperature - _currentDisplayedTemperature) < 0.1f)
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{
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return; // 温度值没有显著变化，不需要更新
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}
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// 保存待更新的温度值
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_pendingTemperature = temperature;
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// 停止并重新启动定时器
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_titleUpdateTimer.Stop();
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_titleUpdateTimer.Start();
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}
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// 定时器Tick事件，实际更新标题栏
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private void TitleUpdateTimer_Tick(object sender, EventArgs e)
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{
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// 停止定时器
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_titleUpdateTimer.Stop();
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// 只有当温度值实际变化时才更新标题栏
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// 检查NaN情况：如果两者都是NaN，认为没有变化
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if (float.IsNaN(_pendingTemperature) && float.IsNaN(_currentDisplayedTemperature))
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{
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return; // 都是NaN，不需要更新
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}
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// 检查数值变化：如果都是有效数字且差异小于阈值，认为没有变化
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if (!float.IsNaN(_pendingTemperature) && !float.IsNaN(_currentDisplayedTemperature) &&
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Math.Abs(_pendingTemperature - _currentDisplayedTemperature) < 0.1f)
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{
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return; // 温度值没有显著变化，不需要更新
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}
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// 更新标题栏
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if (!float.IsNaN(_pendingTemperature))
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{
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this.Text = $"预览 - 温度: {_pendingTemperature:F1}°C";
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}
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else
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{
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this.Text = "预览";
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}
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// 更新当前显示的温度值
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_currentDisplayedTemperature = _pendingTemperature;
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}
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// 鼠标移动事件处理
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private void PreviewImageBox_MouseMove(object sender, MouseEventArgs e)
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{
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if (previewImageBox.Image == null) return;
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// 计算鼠标在图像上的坐标（考虑图像缩放）
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Point imagePoint = GetImagePoint(e.Location);
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// 映射到原始数据点坐标
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Point dataPoint = MapToDataPoint(imagePoint);
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// 添加鼠标移动日志
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Console.WriteLine($"鼠标移动 - 控件坐标: ({e.Location.X},{e.Location.Y}), 图像坐标: ({imagePoint.X},{imagePoint.Y}), 数据点: ({dataPoint.X},{dataPoint.Y})");
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// 使用锁保护_currentDataPoint的访问
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lock (_dataPointLock)
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{
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// 如果数据点发生变化，重绘控件
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if (_currentDataPoint != dataPoint)
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{
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_currentDataPoint = dataPoint;
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previewImageBox.Invalidate(); // 触发Paint事件重绘
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// 获取温度值并使用防抖机制更新标题栏
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float temperature = GetTemperatureAtDataPoint(dataPoint);
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UpdateTitleBarWithDebounce(temperature);
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}
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}
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}
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// 鼠标离开事件处理
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private void PreviewImageBox_MouseLeave(object sender, EventArgs e)
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{
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// 使用锁保护_currentDataPoint的访问
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lock (_dataPointLock)
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{
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_currentDataPoint = new Point(-1, -1);
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previewImageBox.Invalidate(); // 触发Paint事件重绘
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// 使用防抖机制清除标题栏温度显示
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UpdateTitleBarWithDebounce(float.NaN);
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}
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}
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// 将控件坐标转换为图像坐标
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private Point GetImagePoint(Point controlPoint)
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{
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if (previewImageBox.Image == null)
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return controlPoint;
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// 计算图像在控件中的缩放比例
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// SizeMode = StretchImage 将图像拉伸填满整个PictureBox
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// 控件左上角对应图像左上角，控件右下角对应图像右下角
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float scaleX = (float)previewImageBox.Image.Width / previewImageBox.ClientSize.Width;
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float scaleY = (float)previewImageBox.Image.Height / previewImageBox.ClientSize.Height;
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// 计算图像坐标
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return new Point(
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(int)(controlPoint.X * scaleX),
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(int)(controlPoint.Y * scaleY)
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);
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}
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// 将图像坐标映射到原始数据点坐标
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private Point MapToDataPoint(Point imagePoint)
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{
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// 确保坐标在有效范围内
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int x = Math.Max(0, Math.Min(imagePoint.X, DISPLAY_WIDTH - 1));
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int y = Math.Max(0, Math.Min(imagePoint.Y, DISPLAY_HEIGHT - 1));
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// 计算原始数据点坐标（整数除法，向下取整）
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int dataX = x / 2;
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int dataY = y / 2;
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// 确保数据点坐标在有效范围内
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dataX = Math.Max(0, Math.Min(dataX, DATA_WIDTH - 1));
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dataY = Math.Max(0, Math.Min(dataY, DATA_HEIGHT - 1));
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return new Point(dataX, dataY);
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}
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// 获取特定数据点的温度值
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private float GetTemperatureAtDataPoint(Point dataPoint)
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{
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if (_temperatureData == null || _temperatureData.TemperatureMatrix == null)
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return float.NaN;
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// 原始数据点(x,y)对应TemperatureMatrix[y][x]（TemperatureMatrix是[行][列]结构，已包含温补后的温度数据）
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int x = dataPoint.X;
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int y = dataPoint.Y;
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// 确保坐标在有效范围内
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// TemperatureMatrix是[行][列]结构，所以：
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// - GetLength(0)返回行数
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// - GetLength(1)返回列数
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// - y对应行索引，x对应列索引
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if (x >= 0 && x < _temperatureData.TemperatureMatrix.GetLength(1) && // 列索引有效
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y >= 0 && y < _temperatureData.TemperatureMatrix.GetLength(0)) // 行索引有效
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{
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float temperature = _temperatureData.TemperatureMatrix[y, x]; // [行][列]访问
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// 添加鼠标位置温度日志
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Console.WriteLine($"鼠标位置温度 - 数据点: ({x},{y}), 温度: {temperature:F2} °C, 使用矩阵: TemperatureMatrix");
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// 同时记录RealTemperatureMatrix中的对应温度（如果可用）
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if (_temperatureData.RealTemperatureMatrix != null)
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{
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int realX = x * 2;
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int realY = y * 2;
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if (realX >= 0 && realX < _temperatureData.RealTemperatureMatrix.GetLength(1) &&
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realY >= 0 && realY < _temperatureData.RealTemperatureMatrix.GetLength(0))
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{
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float realTemp = _temperatureData.RealTemperatureMatrix[realY, realX];
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Console.WriteLine($"对应RealTemperatureMatrix温度 - 坐标: ({realX},{realY}), 温度: {realTemp:F2} °C");
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if (Math.Abs(temperature - realTemp) > 0.1f)
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{
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Console.WriteLine($"温度差异: {Math.Abs(temperature - realTemp):F2} °C");
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}
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}
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}
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return temperature;
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}
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return float.NaN;
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}
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// 将原始数据点坐标映射到热力图覆盖区域
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private Rectangle GetDataPointCoverageArea(Point dataPoint)
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{
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// 确保数据点在有效范围内
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int x = Math.Max(0, Math.Min(dataPoint.X, DATA_WIDTH - 1));
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int y = Math.Max(0, Math.Min(dataPoint.Y, DATA_HEIGHT - 1));
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// 计算覆盖区域（2×2像素）
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return new Rectangle(x * 2, y * 2, 2, 2);
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}
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// Paint事件处理函数
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private void PreviewImageBox_Paint(object sender, PaintEventArgs e)
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{
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// 边界检查：如果没有图像，不需要绘制覆盖层
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if (previewImageBox.Image == null)
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return;
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// 使用锁保护_currentDataPoint的访问并进行有效性检查
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Point currentDataPoint;
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lock (_dataPointLock)
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{
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currentDataPoint = _currentDataPoint;
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// 如果没有有效的数据点，不需要绘制覆盖层
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if (currentDataPoint.X < 0 || currentDataPoint.Y < 0)
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return;
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}
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// 计算数据点在图像坐标系中的覆盖区域
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Rectangle imageArea = GetDataPointCoverageArea(currentDataPoint);
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// 转换为控件坐标系
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float scaleX = (float)previewImageBox.ClientSize.Width / previewImageBox.Image.Width;
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float scaleY = (float)previewImageBox.ClientSize.Height / previewImageBox.Image.Height;
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Rectangle controlArea = new Rectangle(
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(int)(imageArea.X * scaleX),
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(int)(imageArea.Y * scaleY),
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(int)(imageArea.Width * scaleX),
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(int)(imageArea.Height * scaleY)
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);
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// 使用using语句确保GDI+资源正确释放
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using (Brush semiTransparentRed = new SolidBrush(Color.FromArgb(128, Color.Red)))
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{
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// 绘制覆盖层
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e.Graphics.FillRectangle(semiTransparentRed, controlArea);
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// 使用using语句确保Pen资源正确释放
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using (Pen borderPen = new Pen(Color.Red, 1))
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{
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// 可选：绘制矩形边框以增强视觉效果
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e.Graphics.DrawRectangle(borderPen, controlArea);
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}
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}
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}
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}
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}
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