initial commit

2026-05-08 11:59:26 +08:00
commit 2b5e66c1e7
20 changed files with 1604 additions and 0 deletions
@@ -0,0 +1,126 @@
+using System;
+using System.Runtime.InteropServices;
+using System.Windows;
+using System.Windows.Interop;
+
+namespace ClashWidget.Helpers;
+
+internal static class NativeMethods
+{
+    [DllImport("user32.dll")]
+    private static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter,
+        int X, int Y, int cx, int cy, uint uFlags);
+
+    [DllImport("dwmapi.dll")]
+    private static extern int DwmSetWindowAttribute(IntPtr hwnd, int attr,
+        ref int attrValue, int attrSize);
+
+    [DllImport("dwmapi.dll")]
+    private static extern int DwmExtendFrameIntoClientArea(IntPtr hwnd,
+        ref MARGINS margins);
+
+    [DllImport("user32.dll")]
+    private static extern int SetWindowCompositionAttribute(IntPtr hwnd,
+        ref WindowCompositionAttributeData data);
+
+    [DllImport("user32.dll")]
+    private static extern int GetWindowLong(IntPtr hWnd, int nIndex);
+
+    [DllImport("user32.dll")]
+    private static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);
+
+    private static readonly IntPtr HWND_TOPMOST = new(-1);
+    private const uint SWP_NOMOVE = 0x0002;
+    private const uint SWP_NOSIZE = 0x0001;
+    private const uint SWP_NOACTIVATE = 0x0010;
+    private const uint SWP_SHOWWINDOW = 0x0040;
+    private const int GWL_EXSTYLE = -20;
+    private const int WS_EX_TOOLWINDOW = 0x00000080;
+    private const int WS_EX_APPWINDOW = 0x00040000;
+    private const int DWMWA_SYSTEMBACKDROP_TYPE = 38;
+
+    [StructLayout(LayoutKind.Sequential)]
+    private struct MARGINS { public int Left, Right, Top, Bottom; }
+
+    private enum AccentState { ACCENT_DISABLED = 0, ACCENT_ENABLE_ACRYLICBLURBEHIND = 4 }
+
+    [StructLayout(LayoutKind.Sequential)]
+    private struct AccentPolicy
+    {
+        public AccentState AccentState;
+        public int AccentFlags;
+        public int GradientColor;
+        public int AnimationId;
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    private struct WindowCompositionAttributeData
+    {
+        public WindowCompositionAttribute Attribute;
+        public IntPtr Data;
+        public int SizeOfData;
+    }
+
+    private enum WindowCompositionAttribute { WCA_ACCENT_POLICY = 19 }
+
+    public static void ApplyAcrylic(Window window)
+    {
+        var hwnd = new WindowInteropHelper(window).EnsureHandle();
+
+        // Extend DWM frame into entire client area
+        var margins = new MARGINS { Left = -1, Right = -1, Top = -1, Bottom = -1 };
+        DwmExtendFrameIntoClientArea(hwnd, ref margins);
+
+        // Try Win11 modern API first
+        int backdrop = 3; // DWMSBT_TRANSIENTWINDOW = Acrylic
+        int hr = DwmSetWindowAttribute(hwnd, DWMWA_SYSTEMBACKDROP_TYPE, ref backdrop, sizeof(int));
+
+        if (hr != 0)
+        {
+            // Fallback: Win10 acrylic
+            try
+            {
+                var accent = new AccentPolicy
+                {
+                    AccentState = AccentState.ACCENT_ENABLE_ACRYLICBLURBEHIND,
+                    AccentFlags = 2,
+                    GradientColor = 0x01FFFFFF
+                };
+                var data = new WindowCompositionAttributeData
+                {
+                    Attribute = WindowCompositionAttribute.WCA_ACCENT_POLICY,
+                    SizeOfData = Marshal.SizeOf<AccentPolicy>(),
+                    Data = Marshal.AllocHGlobal(Marshal.SizeOf<AccentPolicy>())
+                };
+                Marshal.StructureToPtr(accent, data.Data, false);
+                SetWindowCompositionAttribute(hwnd, ref data);
+                Marshal.FreeHGlobal(data.Data);
+            }
+            catch { }
+        }
+    }
+
+    public static void SetTopmost(Window window)
+    {
+        try
+        {
+            var hwnd = new WindowInteropHelper(window).EnsureHandle();
+            SetWindowPos(hwnd, HWND_TOPMOST, 0, 0, 0, 0,
+                SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE | SWP_SHOWWINDOW);
+        }
+        catch { }
+    }
+
+    public static void HideFromTaskbar(Window window)
+    {
+        try
+        {
+            var hwnd = new WindowInteropHelper(window).EnsureHandle();
+            int exStyle = GetWindowLong(hwnd, GWL_EXSTYLE);
+            exStyle |= WS_EX_TOOLWINDOW;
+            exStyle &= ~WS_EX_APPWINDOW;
+            SetWindowLong(hwnd, GWL_EXSTYLE, exStyle);
+        }
+        catch { }
+    }
+}