提交初始文件

2025-05-25 09:29:48 +08:00
parent 73a3138b8f
commit b790c7893e
674 changed files with 203959 additions and 0 deletions
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+using System;
+using System.Windows;
+using System.Windows.Ink;
+using System.Windows.Input;
+using System.Windows.Media;
+
+namespace Ink_Canvas.Helpers
+{
+    public class VisualCanvas : FrameworkElement
+    {
+        protected override Visual GetVisualChild(int index)
+        {
+            return Visual;
+        }
+
+        protected override int VisualChildrenCount => 1;
+
+        public VisualCanvas(DrawingVisual visual)
+        {
+            Visual = visual;
+            AddVisualChild(visual);
+        }
+
+        public DrawingVisual Visual { get; }
+    }
+
+    /// <summary>
+    ///     用于显示笔迹的类
+    /// </summary>
+    public class StrokeVisual : DrawingVisual
+    {
+        /// <summary>
+        ///     创建显示笔迹的类
+        /// </summary>
+        public StrokeVisual() : this(new DrawingAttributes()
+        {
+            Color = Colors.Red,
+            //FitToCurve = true,
+            Width = 3,
+            Height = 3
+        })
+        {
+        }
+
+        /// <summary>
+        ///     创建显示笔迹的类
+        /// </summary>
+        /// <param name="drawingAttributes"></param>
+        public StrokeVisual(DrawingAttributes drawingAttributes)
+        {
+            _drawingAttributes = drawingAttributes;
+        }
+
+        /// <summary>
+        ///     设置或获取显示的笔迹
+        /// </summary>
+        public Stroke Stroke { set; get; }
+
+        /// <summary>
+        ///     在笔迹中添加点
+        /// </summary>
+        /// <param name="point"></param>
+        public void Add(StylusPoint point)
+        {
+            if (Stroke == null)
+            {
+                var collection = new StylusPointCollection { point };
+                Stroke = new Stroke(collection) { DrawingAttributes = _drawingAttributes };
+            }
+            else
+            {
+                Stroke.StylusPoints.Add(point);
+            }
+        }
+
+        /// <summary>
+        ///     重新画出笔迹
+        /// </summary>
+        public void Redraw()
+        {
+            try
+            {
+                using (var dc = RenderOpen())
+                {
+                    Stroke.Draw(dc);
+                }
+            }
+            catch { }
+        }
+
+        private readonly DrawingAttributes _drawingAttributes;
+
+        public static implicit operator Stroke(StrokeVisual v)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}