restructure project for part 2

2024-01-27 10:55:53 +00:00
parent a322893166
commit 48925b89ff
96 changed files with 383 additions and 351 deletions
@@ -0,0 +1,172 @@
+using System.Runtime.InteropServices;
+using Windows.Win32;
+using Windows.Win32.Foundation;
+
+namespace Hyperbar.Interop.Windows;
+
+public class WindowSnapping : 
+    IDisposable
+{
+    private readonly uint callback;
+    private readonly nint hwnd;
+    private WindowSnappingPlacement placement;
+
+    public WindowSnapping(IntPtr hwnd)
+    {
+        this.hwnd = hwnd;
+
+        if (Environment.Is64BitProcess)
+        {
+            APPBARDATA64 appBarData = new();
+            appBarData.cbSize = (uint)Marshal.SizeOf(appBarData);
+            appBarData.hWnd = new HWND(hwnd);
+
+            callback = PInvoke.RegisterWindowMessage("AppBarMessage64");
+            appBarData.uCallbackMessage = callback;
+            _ = PInvoke.SHAppBarMessage(0, ref appBarData);
+        }
+        else
+        {
+            APPBARDATA32 appBarData = new();
+            appBarData.cbSize = (uint)Marshal.SizeOf(appBarData);
+            appBarData.hWnd = new HWND(hwnd);
+
+            callback = PInvoke.RegisterWindowMessage("AppBarMessage32");
+            appBarData.uCallbackMessage = callback;
+
+            _ = PInvoke.SHAppBarMessage(0, ref appBarData);
+        }
+    }
+
+    ~WindowSnapping()
+    {
+        Dispose();
+    }
+
+    public static WindowSnapping Create(IntPtr hwnd) => new(hwnd);
+
+    public void Dispose()
+    {
+        GC.SuppressFinalize(this);
+        Remove();
+    }
+
+    public void Snap(WindowSnappingPlacement placement,
+        int size)
+    {
+        this.placement = placement;
+        uint dpi = PInvoke.GetDpiForWindow(new HWND(hwnd));
+
+        double scalingFactor = dpi / 96d;
+        int actualSize = (int)(size * scalingFactor);
+
+        if (Environment.Is64BitProcess)
+        {
+            APPBARDATA64 appBarData = GetAppBarData64();
+            appBarData.rc = GetScreen();
+
+            PInvoke.SHAppBarMessage(2, ref appBarData);
+
+            switch (placement)
+            {
+                case WindowSnappingPlacement.Top:
+                    appBarData.rc.bottom = appBarData.rc.top + actualSize;
+                    break;
+                case WindowSnappingPlacement.Bottom:
+                    appBarData.rc.top = appBarData.rc.bottom - actualSize;
+                    break;
+                case WindowSnappingPlacement.Left:
+                    appBarData.rc.right = appBarData.rc.left + actualSize;
+                    break;
+                case WindowSnappingPlacement.Right:
+                    appBarData.rc.left = appBarData.rc.right - actualSize;
+                    break;
+                default: throw new NotSupportedException();
+            }
+
+            PInvoke.SHAppBarMessage(3, ref appBarData);
+            PInvoke.SetWindowPos(new HWND(hwnd), new HWND(),
+                appBarData.rc.left,
+                appBarData.rc.top,
+                appBarData.rc.right - appBarData.rc.left,
+                appBarData.rc.bottom - appBarData.rc.top, 0);
+        }
+        else
+        {
+            APPBARDATA32 appBarData = GetAppBarData32();
+            appBarData.rc = GetScreen();
+
+            PInvoke.SHAppBarMessage(2, ref appBarData);
+
+            switch (placement)
+            {
+                case WindowSnappingPlacement.Top:
+                    appBarData.rc.bottom = appBarData.rc.top + actualSize;
+                    break;
+                case WindowSnappingPlacement.Bottom:
+                    appBarData.rc.top = appBarData.rc.bottom - actualSize;
+                    break;
+                case WindowSnappingPlacement.Left:
+                    appBarData.rc.right = appBarData.rc.left + actualSize;
+                    break;
+                case WindowSnappingPlacement.Right:
+                    appBarData.rc.left = appBarData.rc.right - actualSize;
+                    break;
+                default: throw new NotSupportedException();
+            }
+
+            PInvoke.SHAppBarMessage(3, ref appBarData);
+            PInvoke.SetWindowPos(new HWND(hwnd), new HWND(),
+                appBarData.rc.left,
+                appBarData.rc.top,
+                appBarData.rc.right - appBarData.rc.left,
+                appBarData.rc.bottom - appBarData.rc.top, 0);
+        }
+    }
+
+    private APPBARDATA32 GetAppBarData32()
+    {
+        APPBARDATA32 appBarData = new();
+        appBarData.cbSize = (uint)Marshal.SizeOf(appBarData);
+        appBarData.hWnd = new HWND(hwnd);
+        appBarData.uEdge = (uint)placement;
+
+        return appBarData;
+    }
+
+    private APPBARDATA64 GetAppBarData64()
+    {
+        APPBARDATA64 appBarData = new();
+        appBarData.cbSize = (uint)Marshal.SizeOf(appBarData);
+        appBarData.hWnd = new HWND(hwnd);
+        appBarData.uEdge = (uint)placement;
+
+        return appBarData;
+    }
+
+    private RECT GetScreen()
+    {
+        Screen screen = Screen.FromHandle(hwnd);
+        return new RECT
+        {
+            left = (int)screen.Bounds.Left,
+            top = (int)screen.Bounds.Top,
+            right = (int)screen.Bounds.Right,
+            bottom = (int)screen.Bounds.Bottom
+        };
+    }
+
+    private void Remove()
+    {
+        if (Environment.Is64BitProcess)
+        {
+            APPBARDATA64 appBarData = GetAppBarData64();
+            PInvoke.SHAppBarMessage(2, ref appBarData);
+        }
+        else
+        {
+            APPBARDATA64 appBarData = GetAppBarData64();
+            PInvoke.SHAppBarMessage(1, ref appBarData);
+        }
+    }
+}