实时过程中禁用图像预览窗体的滚轮缩放功能

2026-06-01 15:07:28 +08:00
parent 5a11af9ab1
commit ad1fdb0230
3 changed files with 31 additions and 0 deletions
@@ -176,6 +176,20 @@ namespace XP.ImageProcessing.RoiControl.Controls
            control.UpdateAdorner();
        }

+        /// <summary>
+        /// 是否允许滚轮缩放（默认允许）。
+        /// 实时图像显示过程中可设为 false 以禁用滚轮缩放。
+        /// </summary>
+        public static readonly DependencyProperty IsWheelZoomEnabledProperty =
+            DependencyProperty.Register(nameof(IsWheelZoomEnabled), typeof(bool), typeof(PolygonRoiCanvas),
+                new PropertyMetadata(true));
+
+        public bool IsWheelZoomEnabled
+        {
+            get => (bool)GetValue(IsWheelZoomEnabledProperty);
+            set => SetValue(IsWheelZoomEnabledProperty, value);
+        }
+
        public static readonly DependencyProperty PanOffsetXProperty =
            DependencyProperty.Register(nameof(PanOffsetX), typeof(double), typeof(PolygonRoiCanvas),
                new PropertyMetadata(0.0, OnPanOffsetChanged));
@@ -2209,6 +2223,13 @@ namespace XP.ImageProcessing.RoiControl.Controls

        private void Canvas_MouseWheel(object sender, MouseWheelEventArgs e)
        {
+            // 实时显示过程中禁用滚轮缩放
+            if (!IsWheelZoomEnabled)
+            {
+                e.Handled = true;
+                return;
+            }
+
            double oldZoom = ZoomScale;
            double newZoom = e.Delta > 0 ? oldZoom * ZoomStep : oldZoom / ZoomStep;
            newZoom = Math.Max(0.1, Math.Min(10.0, newZoom));