first commit

Input/MouseInput.cs

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+using anjianjingling.Native;
+using System.Runtime.InteropServices;
+
+namespace anjianjingling.Input
+{
+    public enum MouseButton { Left, Right, Middle }
+
+    /// <summary>
+    /// 系统级鼠标模拟（SendInput）。
+    /// </summary>
+    public sealed class MouseInput
+    {
+        private static readonly Random Rng = new();
+
+        /// <summary>虚拟桌面（含多显示器）尺寸与原点。</summary>
+        private static Rectangle VirtualScreen()
+        {
+            int x = Win32.GetSystemMetrics(Win32.SM_XVIRTUALSCREEN);
+            int y = Win32.GetSystemMetrics(Win32.SM_YVIRTUALSCREEN);
+            int w = Win32.GetSystemMetrics(Win32.SM_CXVIRTUALSCREEN);
+            int h = Win32.GetSystemMetrics(Win32.SM_CYVIRTUALSCREEN);
+            return new Rectangle(x, y, w, h);
+        }
+
+        /// <summary>把屏幕物理坐标换算为 SendInput 绝对坐标（0..65535，含虚拟桌面偏移）。</summary>
+        private static void ToAbsolute(int x, int y, out int ax, out int ay)
+        {
+            var vs = VirtualScreen();
+            ax = (int)((x - vs.Left) * 65535.0 / (vs.Width - 1));
+            ay = (int)((y - vs.Top) * 65535.0 / (vs.Height - 1));
+        }
+
+        private static void SendSingle(Win32.MOUSEINPUT mi)
+        {
+            var input = new Win32.INPUT
+            {
+                type = Win32.INPUT_MOUSE,
+                u = new Win32.INPUTUNION { mi = mi }
+            };
+            Win32.SendInput(1, new[] { input }, Marshal.SizeOf<Win32.INPUT>());
+        }
+
+        /// <summary>移动鼠标到指定屏幕坐标（瞬时）。</summary>
+        public void MoveTo(int x, int y)
+        {
+            ToAbsolute(x, y, out int ax, out int ay);
+            SendSingle(new Win32.MOUSEINPUT
+            {
+                dx = ax,
+                dy = ay,
+                dwFlags = Win32.MOUSEEVENTF_MOVE | Win32.MOUSEEVENTF_ABSOLUTE | Win32.MOUSEEVENTF_VIRTUALDESK
+            });
+        }
+
+        /// <summary>相对移动。</summary>
+        public void MoveR(int dx, int dy)
+        {
+            var p = Position;
+            MoveTo(p.X + dx, p.Y + dy);
+        }
+
+        /// <summary>带随机偏移的移动（拟人化）。</summary>
+        public void MoveToJitter(int x, int y, int jitterPx = 3)
+        {
+            MoveTo(x + Rng.Next(-jitterPx, jitterPx + 1),
+                   y + Rng.Next(-jitterPx, jitterPx + 1));
+        }
+
+        public void ButtonDown(MouseButton button)
+            => SendSingle(new Win32.MOUSEINPUT { dwFlags = button switch
+            {
+                MouseButton.Left => Win32.MOUSEEVENTF_LEFTDOWN,
+                MouseButton.Right => Win32.MOUSEEVENTF_RIGHTDOWN,
+                MouseButton.Middle => Win32.MOUSEEVENTF_MIDDLEDOWN,
+                _ => throw new ArgumentOutOfRangeException(nameof(button))
+            } });
+
+        public void ButtonUp(MouseButton button)
+            => SendSingle(new Win32.MOUSEINPUT { dwFlags = button switch
+            {
+                MouseButton.Left => Win32.MOUSEEVENTF_LEFTUP,
+                MouseButton.Right => Win32.MOUSEEVENTF_RIGHTUP,
+                MouseButton.Middle => Win32.MOUSEEVENTF_MIDDLEUP,
+                _ => throw new ArgumentOutOfRangeException(nameof(button))
+            } });
+
+        /// <summary>在当前位置点击；jitter=true 时落点带 ±3px 随机偏移（仅当指定坐标时）。</summary>
+        public void Click(MouseButton button, int? x = null, int? y = null, bool jitter = false)
+        {
+            if (x.HasValue && y.HasValue)
+            {
+                if (jitter) MoveToJitter(x.Value, y.Value);
+                else MoveTo(x.Value, y.Value);
+                Thread.Sleep(60 + Rng.Next(0, 50));
+            }
+            ButtonDown(button);
+            Thread.Sleep(40 + Rng.Next(0, 40));
+            ButtonUp(button);
+        }
+
+        /// <summary>双击（左键）。</summary>
+        public void DoubleClick(int? x = null, int? y = null, bool jitter = false)
+        {
+            Click(MouseButton.Left, x, y, jitter);
+            Thread.Sleep(50 + Rng.Next(0, 60));
+            Click(MouseButton.Left);
+        }
+
+        /// <summary>滚轮：正值向上滚，负值向下滚，单位为格（每格 120）。</summary>
+        public void Wheel(int delta)
+        {
+            SendSingle(new Win32.MOUSEINPUT
+            {
+                mouseData = (uint)(delta * Win32.WHEEL_DELTA),
+                dwFlags = Win32.MOUSEEVENTF_WHEEL
+            });
+        }
+
+        /// <summary>从一点拖拽到另一点，按 duration 插值移动，模拟人手。</summary>
+        public void Drag(int x1, int y1, int x2, int y2, int durationMs = 400)
+        {
+            MoveTo(x1, y1);
+            Thread.Sleep(100);
+            ButtonDown(MouseButton.Left);
+
+            int steps = Math.Max(5, durationMs / 16);
+            for (int i = 1; i <= steps; i++)
+            {
+                double t = (double)i / steps;
+                // 轻微非线性，模拟加减速
+                double e = t * t * (3 - 2 * t);
+                int cx = (int)(x1 + (x2 - x1) * e);
+                int cy = (int)(y1 + (y2 - y1) * e);
+                MoveTo(cx, cy);
+                Thread.Sleep(16);
+            }
+            Thread.Sleep(80);
+            ButtonUp(MouseButton.Left);
+        }
+
+        /// <summary>当前鼠标屏幕坐标。</summary>
+        public Point Position
+        {
+            get
+            {
+                Win32.GetCursorPos(out var p);
+                return p;
+            }
+        }
+    }
+}