Move path logic into Path class

PamhagenSysCtrl/Helpers/Xbe24Keyboard.cs

@@ -1,6 +1,6 @@
 using PIEHidNetCore;
+using System.Drawing;
 using System.IO;
-using System.Windows.Media;
 
 namespace PamhagenSysCtrl.Helpers {
     public class Xbe24Keyboard : IDisposable, PIEDataHandler, PIEErrorHandler {
@@ -11,6 +11,21 @@ namespace PamhagenSysCtrl.Helpers {
             public readonly bool GetKey(int n) => (Rows[n / 6] & (1 << (n % 6))) != 0;
         }
 
+        public static readonly Color DefaltBacklight = Color.FromArgb(3, 3, 3);
+        public static readonly Color Neutral = Color.FromArgb(4, 4, 4);
+        public static readonly Color Red = Color.FromArgb(255, 0, 0);
+        public static readonly Color Green = Color.FromArgb(0, 255, 0);
+        public static readonly Color Blue = Color.FromArgb(0, 0, 255);
+        public static readonly Color Yellow = Color.FromArgb(255, 255, 0);
+        public static readonly Color Magenta = Color.FromArgb(255, 0, 255);
+        public static readonly Color Cyan = Color.FromArgb(0, 255, 255);
+        public static readonly Color Orange = Color.FromArgb(255, 32, 0);
+        public static readonly Color DarkPurple = Color.FromArgb(128, 0, 128);
+        public static readonly Color Purple = Color.FromArgb(255, 64, 255);
+        public static readonly Color LightRed = Color.FromArgb(32, 4, 4);
+        public static readonly Color LightGreen = Color.FromArgb(4, 32, 4);
+        public static readonly Color LightBlue = Color.FromArgb(4, 4, 32);
+
         protected readonly PIEDevice XbeDevice;
 
         private KeyState LastKeyState = new(new byte[4]);
@@ -21,6 +36,7 @@ namespace PamhagenSysCtrl.Helpers {
         public event EventHandler<int>? KeyDown;
         public event EventHandler<int>? KeyUp;
         public event EventHandler<KeyState>? KeysChanged;
+        public event EventHandler<int>? Error;
 
         public Xbe24Keyboard(int pid = 0x0555) {
             foreach (var device in PIEDevice.EnumeratePIE()) {
@@ -40,12 +56,12 @@ namespace PamhagenSysCtrl.Helpers {
             if ((res = XbeDevice.SetErrorCallback(this)) != 0)
                 throw new IOException($"Unable to SetErrorCallback for XBE keyboard: {res}");
 
-            SetBacklight(Color.FromRgb(1, 1, 1));
+            SetBacklight(DefaltBacklight);
         }
 
         public void Dispose() {
             GC.SuppressFinalize(this);
-            SetBacklight(Color.FromRgb(1, 1, 1));
+            SetBacklight(DefaltBacklight);
             XbeDevice?.CloseInterface();
         }
 
@@ -61,7 +77,7 @@ namespace PamhagenSysCtrl.Helpers {
         public void HandlePIEHidError(PIEDevice sourceDevice, int error) {
             if (sourceDevice != XbeDevice)
                 return;
-            // TODO
+            Error?.Invoke(this, error);
         }
 
         protected void HandleKeyStateChange(KeyState current, KeyState last) {