fix dpi scaling and cleanup code base

App.xaml

@@ -1,9 +1,9 @@
-<Application x:Class="RoundedWindowsEdges.App"
-             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:local="clr-namespace:RoundedWindowsEdges"
-             StartupUri="MainWindow.xaml">
-    <Application.Resources>
-
-    </Application.Resources>
-</Application>
+<Application x:Class="RoundedWindowsEdges.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:RoundedWindowsEdges"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>

App.xaml.cs

@@ -1,69 +1,69 @@
-using System;
-using System.Diagnostics;
-using System.Drawing;
-using System.Runtime.InteropServices;
-using System.Windows;
-using Forms = System.Windows.Forms;
-
-namespace RoundedWindowsEdges
-{
-    public partial class App : Application
-    {
-        private TrayIcon trayIcon;
-        private MainWindow[] mainWindows;
-
-        protected override void OnStartup(StartupEventArgs e)
-        {
-            base.OnStartup(e);
-            AppConfig config = AppConfig.LoadConfig();
-            int screenCount = Forms.Screen.AllScreens.Length;
-            mainWindows = new MainWindow[screenCount];
-
-            for (int i = 0; i < screenCount; i++)
-            {
-                var screen = Forms.Screen.AllScreens[i];
-                var bounds = screen.Bounds;
-
-                var dpiScale = GetDpiScale(screen);
-                Debug.WriteLine($"Screen {i}: Bounds = {bounds}, DPI Scale = {dpiScale}");
-
-                var rect = new Rect(bounds.X, bounds.Y, bounds.Width, bounds.Height);
-
-                if (mainWindows[i] == null)
-                {
-                    mainWindows[i] = new MainWindow(rect, config.CornerSize);
-                    mainWindows[i].Show();
-                }
-            }
-
-            trayIcon = new TrayIcon(mainWindows[0]);
-        }
-
-        protected override void OnExit(ExitEventArgs e)
-        {
-            foreach (var window in mainWindows)
-            {
-                window.Close();
-            }
-
-            trayIcon.Dispose();
-            base.OnExit(e);
-        }
-
-        private double GetDpiScale(Forms.Screen screen)
-        {
-            using (Graphics g = Graphics.FromHwnd(IntPtr.Zero))
-            {
-                IntPtr desktop = g.GetHdc();
-                int dpiX = GetDeviceCaps(desktop, 88); 
-                int dpiY = GetDeviceCaps(desktop, 90);
-                g.ReleaseHdc(desktop);
-
-                return dpiX / 96.0; 
-            }
-        }
-
-        [DllImport("gdi32.dll")]
-        static extern int GetDeviceCaps(IntPtr hdc, int nIndex);
-    }
-}
+using System;
+using System.Diagnostics;
+using System.Drawing;
+using System.Runtime.InteropServices;
+using System.Windows;
+using Forms = System.Windows.Forms;
+
+namespace RoundedWindowsEdges
+{
+    public partial class App : Application
+    {
+        private TrayIcon trayIcon;
+        private MainWindow[] mainWindows;
+
+        protected override void OnStartup(StartupEventArgs e)
+        {
+            base.OnStartup(e);
+            AppConfig config = AppConfig.LoadConfig();
+            int screenCount = Forms.Screen.AllScreens.Length;
+            mainWindows = new MainWindow[screenCount];
+
+            for (int i = 0; i < screenCount; i++)
+            {
+                var screen = Forms.Screen.AllScreens[i];
+                var bounds = screen.Bounds;
+                var dpiScale = GetDpiScale(screen);
+                Debug.WriteLine($"Screen {i}: Bounds = {bounds}, DPI Scale = {dpiScale}");
+                var rect = new Rect(
+                    bounds.X / dpiScale,
+                    bounds.Y / dpiScale,
+                    bounds.Width / dpiScale,
+                    bounds.Height / dpiScale
+                );
+                int scaledCornerSize = (int)(config.CornerSize * dpiScale);
+                if (mainWindows[i] == null)
+                {
+                    mainWindows[i] = new MainWindow(rect, scaledCornerSize);
+                    mainWindows[i].Show();
+                }
+            }
+            trayIcon = new TrayIcon(mainWindows[0]);
+        }
+
+        protected override void OnExit(ExitEventArgs e)
+        {
+            foreach (var window in mainWindows)
+            {
+                window.Close();
+            }
+            trayIcon.Dispose();
+            base.OnExit(e);
+        }
+
+        private double GetDpiScale(Forms.Screen screen)
+        {
+            using (Graphics g = Graphics.FromHwnd(IntPtr.Zero))
+            {
+                IntPtr desktop = g.GetHdc();
+                int dpiX = GetDeviceCaps(desktop, 88);
+                int dpiY = GetDeviceCaps(desktop, 90);
+                g.ReleaseHdc(desktop);
+                return dpiX / 96.0;
+            }
+        }
+
+        [DllImport("gdi32.dll")]
+        static extern int GetDeviceCaps(IntPtr hdc, int nIndex);
+    }
+}

AppConfig.cs

@@ -1,42 +1,37 @@
-using System;
-using System.IO;
-using Newtonsoft.Json;
-
-namespace RoundedWindowsEdges
-{
-    public class AppConfig
-    {
-        public int CornerSize { get; set; } = 20;
-
-        private static readonly string configFilePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "config.json");
-
-        public static AppConfig LoadConfig()
-        {
-            if (File.Exists(configFilePath))
-            {
-                try
-                {
-                    string json = File.ReadAllText(configFilePath);
-                    return JsonConvert.DeserializeObject<AppConfig>(json);
-                }
-                catch
-                {
-                    return new AppConfig();
-                }
-            }
-            return new AppConfig();
-        }
-
-        public void SaveConfig()
-        {
-            try
-            {
-                string json = JsonConvert.SerializeObject(this, Newtonsoft.Json.Formatting.Indented);
-                File.WriteAllText(configFilePath, json);
-            }
-            catch
-            {
-            }
-        }
-    }
-}
+using System;
+using System.IO;
+using Newtonsoft.Json;
+
+namespace RoundedWindowsEdges
+{
+    public class AppConfig
+    {
+        public int CornerSize { get; set; } = 20;
+        private static readonly string configFilePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "config.json");
+        public static AppConfig LoadConfig()
+        {
+            if (File.Exists(configFilePath))
+            {
+                try
+                {
+                    string json = File.ReadAllText(configFilePath);
+                    return JsonConvert.DeserializeObject<AppConfig>(json);
+                }
+                catch
+                {
+                    return new AppConfig();
+                }
+            }
+            return new AppConfig();
+        }
+        public void SaveConfig()
+        {
+            try
+            {
+                string json = JsonConvert.SerializeObject(this, Newtonsoft.Json.Formatting.Indented);
+                File.WriteAllText(configFilePath, json);
+            }
+            catch{}
+        }
+    }
+}