GUI桌面环境

Gui/Apps/Paint/Tool.cs

@@ -0,0 +1,24 @@
+using Cosmos.System;
+
+namespace CMLeonOS.Gui.Apps.Paint
+{
+    internal abstract class Tool
+    {
+        internal Tool(string name)
+        {
+            Name = name;
+        }
+
+        internal abstract void Run(Paint paint, Window canvas, MouseState mouseState, int mouseX, int mouseY);
+
+        internal virtual void Selected()
+        {
+        }
+
+        internal virtual void Deselected()
+        {
+        }
+
+        internal string Name { get; init; }
+    }
+}