将十字线以及点点距ROI实现迁移到XP.ImageProcessing.RoiControl中
This commit is contained in:
李伟
@@ -0,0 +1,30 @@
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using System.Windows;
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namespace XP.ImageProcessing.RoiControl.Controls
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{
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/// <summary>测量完成事件参数</summary>
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public class MeasureCompletedEventArgs : RoutedEventArgs
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{
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public Point P1 { get; }
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public Point P2 { get; }
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public double Distance { get; }
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public int TotalCount { get; }
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public MeasureCompletedEventArgs(RoutedEvent routedEvent, Point p1, Point p2, double distance, int totalCount)
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: base(routedEvent)
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{
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P1 = p1; P2 = p2; Distance = distance; TotalCount = totalCount;
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}
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}
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/// <summary>测量状态变化事件参数</summary>
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public class MeasureStatusEventArgs : RoutedEventArgs
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{
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public string Message { get; }
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public MeasureStatusEventArgs(RoutedEvent routedEvent, string message) : base(routedEvent)
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{
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Message = message;
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}
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}
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}
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@@ -243,6 +243,266 @@ namespace XP.ImageProcessing.RoiControl.Controls
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#endregion Dependency Properties
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#region Crosshair
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public static readonly DependencyProperty ShowCrosshairProperty =
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DependencyProperty.Register(nameof(ShowCrosshair), typeof(bool), typeof(PolygonRoiCanvas),
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new PropertyMetadata(false, OnShowCrosshairChanged));
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public bool ShowCrosshair
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{
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get => (bool)GetValue(ShowCrosshairProperty);
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set => SetValue(ShowCrosshairProperty, value);
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}
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private Line _crosshairH, _crosshairV;
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private static void OnShowCrosshairChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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var c = (PolygonRoiCanvas)d;
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if ((bool)e.NewValue)
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c.AddCrosshair();
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else
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c.RemoveCrosshair();
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}
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private void AddCrosshair()
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{
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RemoveCrosshair();
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double w = CanvasWidth, h = CanvasHeight;
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if (w <= 0 || h <= 0) return;
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_crosshairH = new Line { X1 = 0, Y1 = h / 2, X2 = w, Y2 = h / 2, Stroke = Brushes.Red, StrokeThickness = 1, Opacity = 0.7, IsHitTestVisible = false };
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_crosshairV = new Line { X1 = w / 2, Y1 = 0, X2 = w / 2, Y2 = h, Stroke = Brushes.Red, StrokeThickness = 1, Opacity = 0.7, IsHitTestVisible = false };
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mainCanvas.Children.Add(_crosshairH);
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mainCanvas.Children.Add(_crosshairV);
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}
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private void RemoveCrosshair()
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{
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if (_crosshairH != null) { mainCanvas.Children.Remove(_crosshairH); _crosshairH = null; }
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if (_crosshairV != null) { mainCanvas.Children.Remove(_crosshairV); _crosshairV = null; }
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}
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#endregion Crosshair
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#region Measurement
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public static readonly DependencyProperty IsMeasuringProperty =
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DependencyProperty.Register(nameof(IsMeasuring), typeof(bool), typeof(PolygonRoiCanvas),
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new PropertyMetadata(false, OnIsMeasuringChanged));
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public bool IsMeasuring
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{
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get => (bool)GetValue(IsMeasuringProperty);
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set => SetValue(IsMeasuringProperty, value);
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}
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private Canvas _measureOverlay;
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private readonly System.Collections.Generic.List<Models.MeasureGroup> _measureGroups = new();
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private Ellipse _pendingDot;
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private Point? _pendingPoint;
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private Ellipse _mDraggingDot;
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private Models.MeasureGroup _mDraggingGroup;
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private bool _mDraggingIsDot1;
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private static void OnIsMeasuringChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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var c = (PolygonRoiCanvas)d;
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if ((bool)e.NewValue)
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{
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c.EnsureMeasureOverlay();
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}
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else
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{
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// 退出测量模式：只清除未完成的临时点，保留已完成的测量线
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if (c._pendingDot != null && c._measureOverlay != null)
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{
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c._measureOverlay.Children.Remove(c._pendingDot);
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c._pendingDot = null;
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}
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c._pendingPoint = null;
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}
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}
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private void EnsureMeasureOverlay()
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{
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if (_measureOverlay != null) return;
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_measureOverlay = new Canvas { IsHitTestVisible = true, Background = Brushes.Transparent };
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_measureOverlay.SetBinding(Canvas.WidthProperty, new System.Windows.Data.Binding("CanvasWidth") { Source = this });
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_measureOverlay.SetBinding(Canvas.HeightProperty, new System.Windows.Data.Binding("CanvasHeight") { Source = this });
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mainCanvas.Children.Add(_measureOverlay);
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}
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private void RemoveMeasureOverlay()
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{
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if (_measureOverlay != null)
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{
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mainCanvas.Children.Remove(_measureOverlay);
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_measureOverlay = null;
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}
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_measureGroups.Clear();
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_pendingDot = null;
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_pendingPoint = null;
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_mDraggingDot = null;
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_mDraggingGroup = null;
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}
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/// <summary>清除所有测量绘制</summary>
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public void ClearMeasurements()
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{
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RemoveMeasureOverlay();
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}
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/// <summary>获取当前测量组数量</summary>
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public int MeasureCount => _measureGroups.Count;
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/// <summary>处理测量模式下的画布点击</summary>
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private void HandleMeasureClick(Point pos)
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{
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if (_measureOverlay == null) EnsureMeasureOverlay();
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if (_measureOverlay == null) return;
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if (!_pendingPoint.HasValue)
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{
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_pendingPoint = pos;
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_pendingDot = CreateMeasureDot(Brushes.Red);
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_measureOverlay.Children.Add(_pendingDot);
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SetMeasureDotPos(_pendingDot, pos);
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RaiseMeasureStatusChanged($"点点距测量 - 第一点: ({pos.X:F0}, {pos.Y:F0})，请点击第二个点");
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}
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else
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{
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var g = CreateMeasureGroup(_pendingPoint.Value, pos);
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_measureGroups.Add(g);
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_measureOverlay.Children.Remove(_pendingDot);
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_pendingDot = null;
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_pendingPoint = null;
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RaiseMeasureCompleted(g);
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// 完成一条测量后自动退出测量模式
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IsMeasuring = false;
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}
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}
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private Models.MeasureGroup CreateMeasureGroup(Point p1, Point p2)
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{
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var g = new Models.MeasureGroup { P1 = p1, P2 = p2 };
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g.Line = new Line { Stroke = Brushes.Lime, StrokeThickness = 2, IsHitTestVisible = false };
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_measureOverlay.Children.Add(g.Line);
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g.Label = new TextBlock { Foreground = Brushes.Yellow, FontSize = 13, FontWeight = FontWeights.Bold, IsHitTestVisible = false };
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_measureOverlay.Children.Add(g.Label);
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g.Dot1 = CreateMeasureDot(Brushes.Red);
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g.Dot2 = CreateMeasureDot(Brushes.Blue);
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_measureOverlay.Children.Add(g.Dot1);
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_measureOverlay.Children.Add(g.Dot2);
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SetMeasureDotPos(g.Dot1, p1);
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SetMeasureDotPos(g.Dot2, p2);
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g.UpdateLine();
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g.UpdateLabel();
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return g;
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}
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private Ellipse CreateMeasureDot(Brush fill)
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{
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var dot = new Ellipse { Width = 12, Height = 12, Fill = fill, Stroke = Brushes.White, StrokeThickness = 1.5, Cursor = Cursors.Hand };
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dot.SetValue(ContextMenuService.IsEnabledProperty, false);
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dot.MouseLeftButtonDown += MDot_Down;
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dot.MouseMove += MDot_Move;
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dot.MouseLeftButtonUp += MDot_Up;
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dot.PreviewMouseRightButtonUp += MDot_RightClick;
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return dot;
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}
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private static void SetMeasureDotPos(Ellipse dot, Point pos)
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{
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Canvas.SetLeft(dot, pos.X - dot.Width / 2);
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Canvas.SetTop(dot, pos.Y - dot.Height / 2);
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}
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private void MDot_Down(object sender, MouseButtonEventArgs e)
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{
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if (sender is not Ellipse dot) return;
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foreach (var g in _measureGroups)
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{
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if (g.Dot1 == dot) { _mDraggingGroup = g; _mDraggingIsDot1 = true; break; }
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if (g.Dot2 == dot) { _mDraggingGroup = g; _mDraggingIsDot1 = false; break; }
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}
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if (_mDraggingGroup != null) { _mDraggingDot = dot; dot.CaptureMouse(); e.Handled = true; }
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}
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private void MDot_Move(object sender, MouseEventArgs e)
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{
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if (_mDraggingDot == null || _mDraggingGroup == null || _measureOverlay == null) return;
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if (e.LeftButton != MouseButtonState.Pressed) return;
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var pos = e.GetPosition(_measureOverlay);
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SetMeasureDotPos(_mDraggingDot, pos);
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if (_mDraggingIsDot1) _mDraggingGroup.P1 = pos; else _mDraggingGroup.P2 = pos;
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_mDraggingGroup.UpdateLine();
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_mDraggingGroup.UpdateLabel();
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RaiseMeasureCompleted(_mDraggingGroup);
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e.Handled = true;
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}
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private void MDot_Up(object sender, MouseButtonEventArgs e)
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{
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if (_mDraggingDot != null) { _mDraggingDot.ReleaseMouseCapture(); _mDraggingDot = null; _mDraggingGroup = null; e.Handled = true; }
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}
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private void MDot_RightClick(object sender, MouseButtonEventArgs e)
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{
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if (sender is not Ellipse dot || _measureOverlay == null) return;
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Models.MeasureGroup target = null;
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foreach (var g in _measureGroups)
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{
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if (g.Dot1 == dot || g.Dot2 == dot) { target = g; break; }
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}
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if (target == null) return;
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_measureOverlay.Children.Remove(target.Dot1);
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_measureOverlay.Children.Remove(target.Dot2);
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_measureOverlay.Children.Remove(target.Line);
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_measureOverlay.Children.Remove(target.Label);
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_measureGroups.Remove(target);
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RaiseMeasureStatusChanged($"已删除测量线 | 剩余 {_measureGroups.Count} 条");
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e.Handled = true;
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}
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// 测量事件
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public static readonly RoutedEvent MeasureCompletedEvent =
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EventManager.RegisterRoutedEvent(nameof(MeasureCompleted), RoutingStrategy.Bubble,
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typeof(RoutedEventHandler), typeof(PolygonRoiCanvas));
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public event RoutedEventHandler MeasureCompleted
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{
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add { AddHandler(MeasureCompletedEvent, value); }
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remove { RemoveHandler(MeasureCompletedEvent, value); }
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}
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private void RaiseMeasureCompleted(Models.MeasureGroup g)
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{
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RaiseEvent(new MeasureCompletedEventArgs(MeasureCompletedEvent, g.P1, g.P2, g.Distance, _measureGroups.Count));
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}
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public static readonly RoutedEvent MeasureStatusChangedEvent =
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EventManager.RegisterRoutedEvent(nameof(MeasureStatusChanged), RoutingStrategy.Bubble,
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typeof(RoutedEventHandler), typeof(PolygonRoiCanvas));
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public event RoutedEventHandler MeasureStatusChanged
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{
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add { AddHandler(MeasureStatusChangedEvent, value); }
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remove { RemoveHandler(MeasureStatusChangedEvent, value); }
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}
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private void RaiseMeasureStatusChanged(string message)
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{
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RaiseEvent(new MeasureStatusEventArgs(MeasureStatusChangedEvent, message));
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}
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#endregion Measurement
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#region Adorner Management
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private void UpdateAdorner()
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@@ -387,8 +647,9 @@ namespace XP.ImageProcessing.RoiControl.Controls
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if (!isDragging)
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{
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// 处理点击事件
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Point clickPosition = e.GetPosition(mainCanvas);
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if (IsMeasuring)
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HandleMeasureClick(clickPosition);
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OnCanvasClicked(clickPosition);
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}
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