213 lines
8.3 KiB
C#
213 lines
8.3 KiB
C#
using System.Runtime.InteropServices;
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namespace AgentWorker.WindowsRunner;
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// 输入类 P/Invoke 独立成类：NativeWindows 保持对面"只读编译边界"原样不动。
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// 本层没有进程启动接口；所有输入只作用于经策略核验后的前台窗口。
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// 坐标一律物理屏幕像素——进程入口（ActuateService.EnsureDpiAwareness）声明
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// Per-Monitor V2 DPI 感知，与 RPA 侧 PowerShell 驱动每脚本声明的
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// SetProcessDpiAwarenessContext(-4) 语义一致，保证 SetCursorPos 全程物理像素。
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// 抢前台五招兜底从 RPA 驱动 activateWindowScript 逐行移植：
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// Windows 前台锁定策略会拒绝普通 SetForegroundWindow（应用点击"运行"后自身是前台），
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// 五招顺序与睡眠时间是踩坑调出来的实战参数，一行语义都不允许改动。
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internal static class NativeInput
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{
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private const uint InputMouse = 0;
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private const uint MouseEventfMove = 0x0001;
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private const uint MouseEventfLeftDown = 0x0002;
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private const uint MouseEventfLeftUp = 0x0004;
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private const uint MouseEventfRightDown = 0x0008;
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private const uint MouseEventfRightUp = 0x0010;
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private const uint MouseEventfWheel = 0x0800;
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internal const int SwRestore = 9;
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internal const int SwMinimize = 6;
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internal const int SwMaximize = 3;
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private const uint WmClose = 0x0010;
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private const byte VkMenu = 0x12; // ALT
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private const uint KeyeventfKeyup = 0x0002;
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[DllImport("user32.dll")]
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[return: MarshalAs(UnmanagedType.Bool)]
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internal static extern bool SetCursorPos(int x, int y);
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[DllImport("user32.dll")]
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[return: MarshalAs(UnmanagedType.Bool)]
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private static extern bool GetCursorPos(out Point point);
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[DllImport("user32.dll")]
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[return: MarshalAs(UnmanagedType.Bool)]
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internal static extern bool SetForegroundWindow(nint handle);
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[DllImport("user32.dll")]
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[return: MarshalAs(UnmanagedType.Bool)]
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internal static extern bool ShowWindow(nint handle, int command);
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[DllImport("user32.dll")]
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[return: MarshalAs(UnmanagedType.Bool)]
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internal static extern bool IsIconic(nint handle);
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[DllImport("user32.dll")]
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internal static extern void keybd_event(byte virtualKey, byte scanCode, uint flags, nint extraInfo);
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[DllImport("user32.dll")]
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[return: MarshalAs(UnmanagedType.Bool)]
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private static extern bool AttachThreadInput(uint currentThread, uint targetThread, bool attach);
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[DllImport("user32.dll")]
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private static extern void SwitchToThisWindow(nint handle, bool altTab);
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[DllImport("kernel32.dll")]
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private static extern uint GetCurrentThreadId();
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[DllImport("user32.dll")]
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[return: MarshalAs(UnmanagedType.Bool)]
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private static extern bool SetProcessDpiAwarenessContext(nint value);
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[DllImport("user32.dll")]
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[return: MarshalAs(UnmanagedType.Bool)]
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private static extern bool SetWindowPos(nint handle, nint after, int x, int y,
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int width, int height, uint flags);
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[DllImport("user32.dll")]
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[return: MarshalAs(UnmanagedType.Bool)]
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private static extern bool PostMessage(nint handle, uint message, nint wParam, nint lParam);
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[DllImport("user32.dll", SetLastError = true)]
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private static extern uint SendInput(uint count, Input[] inputs, int size);
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[StructLayout(LayoutKind.Sequential)]
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internal struct Point { public int X; public int Y; }
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[StructLayout(LayoutKind.Sequential)]
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private struct Input
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{
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public uint Type;
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public InputUnion Union;
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}
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[StructLayout(LayoutKind.Explicit)]
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private struct InputUnion
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{
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[FieldOffset(0)] public MouseInput Mouse;
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}
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[StructLayout(LayoutKind.Sequential)]
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private struct MouseInput
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{
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public int Dx;
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public int Dy;
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public uint MouseData;
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public uint Flags;
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public uint Time;
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public nint ExtraInfo;
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}
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// DPI 感知声明是进程级一次性设置；失败（如已被宿主先行声明）不影响后续调用。
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internal static void EnsureDpiAwareness()
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{
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try { _ = SetProcessDpiAwarenessContext(new nint(-4)); }
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catch { /* 旧系统无此 API 时按物理像素继续；对面 CoordinateSpace 以 GetDpiForWindow 实测为准。 */ }
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}
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// SendInput 批量提交鼠标标志组合；单次失败按 input_failed 处理由上层转稳定错误码。
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internal static void SendMouse(uint flags, uint data)
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{
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var input = new Input
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{
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Type = InputMouse,
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Union = new InputUnion
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{
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Mouse = new MouseInput { Dx = 0, Dy = 0, MouseData = data, Flags = flags }
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}
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};
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if (SendInput(1, [input], Marshal.SizeOf<Input>()) != 1)
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throw new RunnerException("input_failed");
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}
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internal static void SendWheel(int amount) =>
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SendMouse(MouseEventfWheel, unchecked((uint)amount));
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internal static void Click(bool right, int repeats, int settleMs)
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{
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var down = right ? MouseEventfRightDown : MouseEventfLeftDown;
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var up = right ? MouseEventfRightUp : MouseEventfLeftUp;
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for (var i = 0; i < repeats; i++)
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{
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SendMouse(down, 0);
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SendMouse(up, 0);
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if (settleMs > 0) Thread.Sleep(settleMs);
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}
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}
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internal static Point CursorPosition()
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{
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if (!GetCursorPos(out var point)) throw new RunnerException("input_failed");
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return point;
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}
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// 窗口拖拽时序：按下→hold→移动→release→抬起，与 RPA 驱动逐段一致。
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internal static void DragSequence(bool right, int fromX, int fromY, int toX, int toY,
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int holdMs, int releaseDelayMs)
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{
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var down = right ? MouseEventfRightDown : MouseEventfLeftDown;
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var up = right ? MouseEventfRightUp : MouseEventfLeftUp;
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if (!SetCursorPos(fromX, fromY)) throw new RunnerException("input_failed");
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SendMouse(down, 0);
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if (holdMs > 0) Thread.Sleep(holdMs);
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if (!SetCursorPos(toX, toY)) throw new RunnerException("input_failed");
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if (releaseDelayMs > 0) Thread.Sleep(releaseDelayMs);
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SendMouse(up, 0);
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}
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// 抢前台五招兜底（RPA 驱动 activateWindowScript 的逐行移植）：
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// ①最小化则恢复 +150ms ②SwitchToThisWindow +150ms ③ALT 借位 + SetForegroundWindow +200ms
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// ④AttachThreadInput 挂到前台线程 + SetForegroundWindow +200ms ⑤最小化再恢复 +450ms
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// 五招全失败抛 focus_failed——对应 PS 版 RPA_ERROR '无法把窗口带到前台'。
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internal static void FocusChain(nint handle)
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{
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if (IsIconic(handle))
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{
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_ = ShowWindow(handle, SwRestore);
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Thread.Sleep(150);
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}
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if (NativeWindows.GetForegroundWindow() != handle)
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{
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SwitchToThisWindow(handle, true);
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Thread.Sleep(150);
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}
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if (NativeWindows.GetForegroundWindow() != handle)
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{
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keybd_event(VkMenu, 0, 0, nint.Zero);
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_ = SetForegroundWindow(handle);
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keybd_event(VkMenu, 0, KeyeventfKeyup, nint.Zero);
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Thread.Sleep(200);
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}
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if (NativeWindows.GetForegroundWindow() != handle)
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{
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// 返回值即前台窗口的线程号；PID 出参不需要。
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var foregroundThread = NativeWindows.GetWindowThreadProcessId(
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NativeWindows.GetForegroundWindow(), out _);
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var currentThread = GetCurrentThreadId();
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var attached = AttachThreadInput(currentThread, foregroundThread, true);
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try { _ = SetForegroundWindow(handle); }
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finally { if (attached) _ = AttachThreadInput(currentThread, foregroundThread, false); }
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Thread.Sleep(200);
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}
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if (NativeWindows.GetForegroundWindow() != handle)
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{
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_ = ShowWindow(handle, SwMinimize);
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Thread.Sleep(150);
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_ = ShowWindow(handle, SwRestore);
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Thread.Sleep(300);
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}
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if (NativeWindows.GetForegroundWindow() != handle)
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throw new RunnerException("focus_failed");
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}
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internal static void MoveWindowBounds(nint handle, int x, int y, int width, int height) =>
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_ = SetWindowPos(handle, nint.Zero, x, y, width, height, 4); // flags=4 SWP_NOZORDER，与 RPA 驱动一致
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internal static void CloseWindow(nint handle) =>
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_ = PostMessage(handle, WmClose, nint.Zero, nint.Zero);
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}
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