GUI桌面环境

Gui/Apps/Notepad.cs

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+using CMLeonOS;
+using CMLeonOS.Gui.SmoothMono;
+using CMLeonOS.Gui.UILib;
+using CMLeonOS.Utils;
+using System.Drawing;
+using System.IO;
+
+namespace CMLeonOS.Gui.Apps
+{
+    internal class Notepad : Process
+    {
+        internal Notepad() : base("Notepad", ProcessType.Application) { }
+
+        internal Notepad(string path) : base("Notepad", ProcessType.Application)
+        {
+            this.path = path;
+        }
+
+        AppWindow window;
+
+        WindowManager wm = ProcessManager.GetProcess<WindowManager>();
+
+        SettingsService settingsService = ProcessManager.GetProcess<SettingsService>();
+
+        TextBox textBox;
+
+        ShortcutBar shortcutBar;
+
+        private string? path = null;
+
+        private bool modified = false;
+
+        private void TextChanged()
+        {
+            modified = true;
+
+            UpdateTitle();
+        }
+
+        private void WindowResized()
+        {
+            textBox.Resize(window.Width, window.Height - 20);
+            shortcutBar.Resize(window.Width, 20);
+
+            shortcutBar.Render();
+
+            textBox.MarkAllLines();
+            textBox.Render();
+        }
+
+        private void UpdateTitle()
+        {
+            if (path == null)
+            {
+                window.Title = "Untitled - Notepad";
+                return;
+            }
+
+            if (modified)
+            {
+                window.Title = $"{Path.GetFileName(path)}* - Notepad";
+            }
+            else
+            {
+                window.Title = $"{Path.GetFileName(path)} - Notepad";
+            }
+        }
+
+        internal void Open(string newPath, bool readFile = true)
+        {
+            if (newPath == null) return;
+
+            if (!FileSecurity.CanAccess(path))
+            {
+                MessageBox messageBox = new MessageBox(this, "Notepad", $"Access to '{Path.GetFileName(newPath)}' is unauthorised.");
+                messageBox.Show();
+            }
+
+            if (readFile && !File.Exists(newPath))
+            {
+                MessageBox messageBox = new MessageBox(this, "Notepad", $"No such file '{Path.GetFileName(newPath)}'.");
+                messageBox.Show();
+            }
+
+            path = newPath;
+
+            if (readFile)
+            {
+                textBox.Text = File.ReadAllText(path);
+
+                textBox.MarkAllLines();
+                textBox.Render();
+
+                modified = false;
+            }
+
+            UpdateTitle();
+        }
+
+        private void OpenFilePrompt()
+        {
+            PromptBox prompt = new PromptBox(this, "Open File", "Enter the path to open.", "Path", (string newPath) =>
+            {
+                if (!newPath.Contains(':'))
+                {
+                    newPath = $@"0:\{newPath}";
+                }
+                Open(newPath);
+            });
+            prompt.Show();
+        }
+
+        private void SaveAsPrompt()
+        {
+            PromptBox prompt = new PromptBox(this, "Save As", "Enter the path to save to.", "Path", (string newPath) =>
+            {
+                if (!newPath.Contains(':'))
+                {
+                    newPath = $@"0:\{newPath}";
+                }
+
+                Open(newPath, readFile: false);
+
+                // Check if open succeeded.
+                if (path != null)
+                {
+                    Save();
+                }
+            });
+            prompt.Show();
+        }
+
+        private void Save()
+        {
+            if (path == null)
+            {
+                SaveAsPrompt();
+                return;
+            }
+
+            File.WriteAllText(path, textBox.Text);
+
+            modified = false;
+            UpdateTitle();
+        }
+
+        private void ApplyTheme()
+        {
+            if (settingsService.DarkNotepad)
+            {
+                textBox.Background = Color.FromArgb(24, 24, 30);
+                textBox.Foreground = Color.White;
+
+                shortcutBar.Background = Color.FromArgb(56, 56, 71);
+                shortcutBar.Foreground = Color.White;
+            }
+            else
+            {
+                textBox.Background = Color.White;
+                textBox.Foreground = Color.Black;
+
+                shortcutBar.Background = Color.LightGray;
+                shortcutBar.Foreground = Color.Black;
+            }
+
+            textBox.MarkAllLines();
+            textBox.Render();
+        }
+
+        private void OpenViewSettings()
+        {
+            AppWindow settingsWindow = new AppWindow(this, 320, 264, 256, 192);
+            settingsWindow.DrawString("Notepad Settings", Color.DarkBlue, 12, 12);
+            settingsWindow.DrawString($"Notepad v{Kernel.Version}", Color.DarkGray, 12, settingsWindow.Height - 12 - FontData.Height);
+            wm.AddWindow(settingsWindow);
+            settingsWindow.Title = "Notepad";
+
+            Switch darkSwitch = new Switch(settingsWindow, 12, 40, settingsWindow.Width - 16, 20);
+            darkSwitch.Text = "Dark theme";
+            darkSwitch.Checked = settingsService.DarkNotepad;
+            darkSwitch.CheckBoxChanged = (bool @checked) =>
+            {
+                settingsService.DarkNotepad = @checked;
+                ApplyTheme();
+            };
+            wm.AddWindow(darkSwitch);
+
+            wm.Update(settingsWindow);
+        }
+
+        public override void Start()
+        {
+            base.Start();
+            window = new AppWindow(this, 320, 264, 384, 240);
+            wm.AddWindow(window);
+            UpdateTitle();
+            window.Closing = TryStop;
+            window.Icon = AppManager.GetAppMetadata("Notepad").Icon;
+            window.CanResize = true;
+            window.UserResized = WindowResized;
+
+            shortcutBar = new ShortcutBar(window, 0, 0, window.Width, 20);
+            shortcutBar.Cells.Add(new ShortcutBarCell("Open", OpenFilePrompt));
+            shortcutBar.Cells.Add(new ShortcutBarCell("Save", Save));
+            shortcutBar.Cells.Add(new ShortcutBarCell("Save As", SaveAsPrompt));
+            shortcutBar.Cells.Add(new ShortcutBarCell("View", OpenViewSettings));
+            shortcutBar.Render();
+            wm.AddWindow(shortcutBar);
+
+            textBox = new TextBox(window, 0, 20, window.Width, window.Height - 20);
+            textBox.MultiLine = true;
+            textBox.Changed = TextChanged;
+            wm.AddWindow(textBox);
+
+            ApplyTheme();
+
+            Open(path);
+
+            wm.Update(window);
+        }
+
+        public override void Run()
+        {
+        }
+    }
+}