Menu popup position fix;

move minmaxsize logic from behavior to avoid use behavior in MarkupExtensionProperties; WindowHeaderBrush improve for DevLab colors
2026-03-21 10:21:16 +00:00 · 2019-04-21 00:24:08 +03:00
parent 4abae309d5
commit 77b83a61d8
9 changed files with 125 additions and 88 deletions
--- a/BrightSharp/Behaviors/MinMaxSize_Logic.cs
+++ b/BrightSharp/Behaviors/MinMaxSize_Logic.cs
@@ -0,0 +1,78 @@
+using BrightSharp.Interop;
+using BrightSharp.Interop.Constants;
+using BrightSharp.Interop.Structures;
+using System;
+using System.Runtime.InteropServices;
+using System.Windows;
+using System.Windows.Interop;
+
+namespace BrightSharp.Behaviors
+{
+    internal class MinMaxSize_Logic
+    {
+        private HwndSource hwndSource;
+        private Window associatedObject;
+        public MinMaxSize_Logic(Window associatedObject)
+        {
+            this.associatedObject = associatedObject;
+        }
+        public void OnAttached()
+        {
+            this.associatedObject.SourceInitialized += AssociatedObject_SourceInitialized;
+        }
+
+        private void AssociatedObject_SourceInitialized(object sender, EventArgs e)
+        {
+            IntPtr handle = new WindowInteropHelper(this.associatedObject).Handle;
+            hwndSource = HwndSource.FromHwnd(handle);
+            hwndSource.AddHook(WindowProc);
+        }
+
+        public void OnDetaching()
+        {
+            this.associatedObject.SourceInitialized -= AssociatedObject_SourceInitialized;
+            if (hwndSource != null)
+            {
+                hwndSource.RemoveHook(WindowProc);
+                hwndSource.Dispose();
+            }
+        }
+
+        private IntPtr WindowProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
+        {
+            switch (msg)
+            {
+                case 0x0024:
+                    WmGetMinMaxInfo(hwnd, lParam);
+                    handled = true;
+                    break;
+            }
+            return (IntPtr)0;
+        }
+
+        private void WmGetMinMaxInfo(IntPtr hwnd, IntPtr lParam)
+        {
+            var mmi = (MINMAXINFO)Marshal.PtrToStructure(lParam, typeof(MINMAXINFO));
+
+            // Adjust the maximized size and position to fit the work area of the correct monitor
+            IntPtr monitor = NativeMethods.MonitorFromWindow(hwnd, (int)MonitorFromWindowFlags.MONITOR_DEFAULTTONEAREST);
+
+            if (monitor != IntPtr.Zero)
+            {
+                var monitorInfo = new MONITORINFO();
+                NativeMethods.GetMonitorInfo(monitor, monitorInfo);
+                RECT rcWorkArea = monitorInfo.rcWork;
+                RECT rcMonitorArea = monitorInfo.rcMonitor;
+                mmi.ptMaxPosition.x = Math.Abs(rcWorkArea.Left - rcMonitorArea.Left);
+                mmi.ptMaxPosition.y = Math.Abs(rcWorkArea.Top - rcMonitorArea.Top);
+                mmi.ptMaxSize.x = Math.Abs(rcWorkArea.Right - rcWorkArea.Left);
+                mmi.ptMaxSize.y = Math.Abs(rcWorkArea.Bottom - rcWorkArea.Top);
+                mmi.ptMinTrackSize.x = (int)associatedObject.MinWidth;
+                mmi.ptMinTrackSize.y = (int)associatedObject.MinHeight;
+            }
+
+            Marshal.StructureToPtr(mmi, lParam, true);
+        }
+
+    }
+}