GUI桌面环境

Gui/UILib/MessageBox.cs

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+using CMLeonOS;
+using System;
+using System.Drawing;
+
+namespace CMLeonOS.Gui.UILib
+{
+    internal class MessageBox
+    {
+        internal MessageBox(Process process, string title, string message)
+        {
+            this.Process = process;
+            Title = title;
+            Message = message;
+        }
+
+        protected const int Padding = 12;
+
+        internal void Show()
+        {
+            WindowManager wm = ProcessManager.GetProcess<WindowManager>();
+
+            int longestLineLength = 0;
+            foreach (string line in Message.Split('\n'))
+            {
+                longestLineLength = Math.Max(longestLineLength, line.Length);
+            }
+
+            int width = Math.Max(192, (Padding * 2) + (8 * longestLineLength));
+            int height = 128 + ((Message.Split('\n').Length - 1) * 16);
+
+            AppWindow window = new AppWindow(Process, (int)((wm.ScreenWidth / 2) - (height / 2)), (int)((wm.ScreenWidth / 2) - (width / 2)), width, height);
+            window.Title = Title;
+            wm.AddWindow(window);
+
+            window.Clear(Color.LightGray);
+            window.DrawFilledRectangle(0, window.Height - (Padding * 2) - 20, window.Width, (Padding * 2) + 20, Color.Gray);
+            window.DrawString(Message, Color.Black, Padding, Padding);
+
+            Button ok = new Button(window, window.Width - 80 - Padding, window.Height - 20 - Padding, 80, 20);
+            ok.Text = "OK";
+            ok.OnClick = (int x, int y) =>
+            {
+                wm.RemoveWindow(window);
+            };
+            wm.AddWindow(ok);
+
+            wm.Update(window);
+
+            ProcessManager.GetProcess<Sound.SoundService>().PlaySystemSound(Sound.SystemSound.Alert);
+        }
+
+        internal Process Process { get; private set; }
+
+        internal string Title { get; private set; }
+
+        internal string Message { get; private set; }
+    }
+}