桌面环境：增加环境变量APP并给Paint应用程序增加更多画图工具

Gui/Apps/EnvironmentVariables.cs

@@ -0,0 +1,253 @@
+using CMLeonOS;
+using CMLeonOS.Gui.UILib;
+using System.Collections.Generic;
+using System.Drawing;
+
+namespace CMLeonOS.Gui.Apps
+{
+    internal class EnvironmentVariables : Process
+    {
+        internal EnvironmentVariables() : base("Environment Variables", ProcessType.Application) { }
+
+        private AppWindow window;
+        private Window header;
+        private Table variableTable;
+        private Button addButton;
+        private Button editButton;
+        private Button deleteButton;
+        private Button refreshButton;
+
+        private readonly WindowManager wm = ProcessManager.GetProcess<WindowManager>();
+        private readonly EnvironmentVariableManager envManager = EnvironmentVariableManager.Instance;
+
+        private readonly List<string> rowNames = new List<string>();
+        private readonly List<string> rowValues = new List<string>();
+
+        private const int padding = 8;
+        private const int toolbarHeight = 32;
+        private const int headerHeight = 54;
+        private const int buttonWidth = 78;
+        private const int buttonHeight = 24;
+
+        private string statusText = "Manage variables stored in 0:\\system\\env.dat";
+
+        private void SetStatus(string text)
+        {
+            statusText = text;
+            RenderHeader();
+        }
+
+        private void RenderHeader()
+        {
+            header.Clear(Color.FromArgb(235, 241, 248));
+            header.DrawRectangle(0, 0, header.Width, header.Height, Color.FromArgb(180, 192, 208));
+            header.DrawString("Environment Variables", Color.FromArgb(28, 38, 52), 12, 10);
+            header.DrawString(statusText, Color.FromArgb(97, 110, 126), 12, 30);
+            wm.Update(header);
+        }
+
+        private void UpdateStatusFromSelection()
+        {
+            if (variableTable.SelectedCellIndex >= 0 && variableTable.SelectedCellIndex < rowNames.Count)
+            {
+                SetStatus($"Selected: {rowNames[variableTable.SelectedCellIndex]}={rowValues[variableTable.SelectedCellIndex]}");
+                return;
+            }
+
+            SetStatus($"Loaded {rowNames.Count} variable(s) from 0:\\system\\env.dat");
+        }
+
+        private void PopulateTable()
+        {
+            string selectedName = null;
+            if (variableTable.SelectedCellIndex >= 0 && variableTable.SelectedCellIndex < rowNames.Count)
+            {
+                selectedName = rowNames[variableTable.SelectedCellIndex];
+            }
+
+            rowNames.Clear();
+            rowValues.Clear();
+            variableTable.Cells.Clear();
+            variableTable.SelectedCellIndex = -1;
+
+            string[] variables = envManager.GetAllVariablesAsLines();
+            for (int i = 0; i < variables.Length; i++)
+            {
+                string line = variables[i] ?? string.Empty;
+                int equalIndex = line.IndexOf('=');
+                string name = equalIndex >= 0 ? line.Substring(0, equalIndex) : line;
+                string value = equalIndex >= 0 ? line.Substring(equalIndex + 1) : string.Empty;
+
+                rowNames.Add(name);
+                rowValues.Add(value);
+            }
+
+            for (int i = 0; i < rowNames.Count; i++)
+            {
+                variableTable.Cells.Add(new TableCell($"{rowNames[i]}={rowValues[i]}", rowNames[i]));
+            }
+
+            if (!string.IsNullOrWhiteSpace(selectedName))
+            {
+                for (int i = 0; i < rowNames.Count; i++)
+                {
+                    if (rowNames[i] == selectedName)
+                    {
+                        variableTable.SelectedCellIndex = i;
+                        break;
+                    }
+                }
+            }
+
+            variableTable.Render();
+            UpdateStatusFromSelection();
+        }
+
+        private void SelectionChanged(int index)
+        {
+            UpdateStatusFromSelection();
+        }
+
+        private void RefreshClicked(int x, int y)
+        {
+            PopulateTable();
+        }
+
+        private void AddClicked(int x, int y)
+        {
+            PromptBox namePrompt = new PromptBox(this, "Add Variable", "Enter the variable name.", "MY_VAR", (string name) =>
+            {
+                string trimmedName = (name ?? string.Empty).Trim();
+                if (string.IsNullOrWhiteSpace(trimmedName))
+                {
+                    SetStatus("Variable name cannot be empty.");
+                    return;
+                }
+
+                PromptBox valuePrompt = new PromptBox(this, "Add Variable", $"Enter the value for {trimmedName}.", "value", (string value) =>
+                {
+                    envManager.SetVariable(trimmedName, value ?? string.Empty);
+                    PopulateTable();
+                    SetStatus($"Added: {trimmedName}");
+                });
+                valuePrompt.Show();
+            });
+            namePrompt.Show();
+        }
+
+        private void EditClicked(int x, int y)
+        {
+            if (variableTable.SelectedCellIndex < 0 || variableTable.SelectedCellIndex >= rowNames.Count)
+            {
+                SetStatus("Select a variable first.");
+                return;
+            }
+
+            string selectedName = rowNames[variableTable.SelectedCellIndex];
+            string selectedValue = rowValues[variableTable.SelectedCellIndex];
+            PromptBox valuePrompt = new PromptBox(this, "Edit Variable", $"Enter a new value for {selectedName}.", selectedValue, (string value) =>
+            {
+                envManager.SetVariable(selectedName, value ?? string.Empty);
+                PopulateTable();
+                SetStatus($"Updated: {selectedName}");
+            });
+            valuePrompt.Show();
+        }
+
+        private void DeleteClicked(int x, int y)
+        {
+            if (variableTable.SelectedCellIndex < 0 || variableTable.SelectedCellIndex >= rowNames.Count)
+            {
+                SetStatus("Select a variable first.");
+                return;
+            }
+
+            string selectedName = rowNames[variableTable.SelectedCellIndex];
+            bool deleted = envManager.DeleteVariable(selectedName);
+            if (!deleted)
+            {
+                new MessageBox(this, "Environment Variables", "Unable to delete the selected variable.").Show();
+                return;
+            }
+
+            PopulateTable();
+            SetStatus($"Deleted: {selectedName}");
+        }
+
+        private void Relayout()
+        {
+            int topY = padding;
+            addButton.MoveAndResize(window.Width - ((buttonWidth * 4) + (padding * 4)), topY, buttonWidth, buttonHeight);
+            editButton.MoveAndResize(window.Width - ((buttonWidth * 3) + (padding * 3)), topY, buttonWidth, buttonHeight);
+            deleteButton.MoveAndResize(window.Width - ((buttonWidth * 2) + (padding * 2)), topY, buttonWidth, buttonHeight);
+            refreshButton.MoveAndResize(window.Width - (buttonWidth + padding), topY, buttonWidth, buttonHeight);
+
+            header.MoveAndResize(0, toolbarHeight, window.Width, headerHeight);
+
+            int tableY = toolbarHeight + headerHeight;
+            variableTable.MoveAndResize(0, tableY, window.Width, window.Height - tableY);
+
+            addButton.Render();
+            editButton.Render();
+            deleteButton.Render();
+            refreshButton.Render();
+            RenderHeader();
+            variableTable.Render();
+        }
+
+        public override void Start()
+        {
+            base.Start();
+
+            window = new AppWindow(this, 220, 120, 760, 430);
+            window.Title = "Environment Variables";
+            window.Icon = AppManager.DefaultAppIcon;
+            window.CanResize = true;
+            window.UserResized = Relayout;
+            window.Closing = TryStop;
+            wm.AddWindow(window);
+
+            addButton = new Button(window, 0, 0, 1, 1);
+            addButton.Text = "Add";
+            addButton.OnClick = AddClicked;
+            wm.AddWindow(addButton);
+
+            editButton = new Button(window, 0, 0, 1, 1);
+            editButton.Text = "Edit";
+            editButton.OnClick = EditClicked;
+            wm.AddWindow(editButton);
+
+            deleteButton = new Button(window, 0, 0, 1, 1);
+            deleteButton.Text = "Delete";
+            deleteButton.OnClick = DeleteClicked;
+            wm.AddWindow(deleteButton);
+
+            refreshButton = new Button(window, 0, 0, 1, 1);
+            refreshButton.Text = "Refresh";
+            refreshButton.OnClick = RefreshClicked;
+            wm.AddWindow(refreshButton);
+
+            header = new Window(this, window, 0, toolbarHeight, window.Width, headerHeight);
+            wm.AddWindow(header);
+
+            variableTable = new Table(window, 0, toolbarHeight + headerHeight, window.Width, window.Height - toolbarHeight - headerHeight);
+            variableTable.Background = Color.White;
+            variableTable.Foreground = Color.Black;
+            variableTable.Border = Color.FromArgb(185, 194, 207);
+            variableTable.SelectedBackground = Color.FromArgb(216, 231, 255);
+            variableTable.SelectedBorder = Color.FromArgb(94, 138, 216);
+            variableTable.SelectedForeground = Color.Black;
+            variableTable.CellHeight = 24;
+            variableTable.TableCellSelected = SelectionChanged;
+            wm.AddWindow(variableTable);
+
+            PopulateTable();
+            Relayout();
+            wm.Update(window);
+        }
+
+        public override void Run()
+        {
+        }
+    }
+}

Gui/Apps/Paint/ToolBox.cs

@@ -31,7 +31,12 @@ namespace CMLeonOS.Gui.Apps.Paint
         internal readonly List<Tool> Tools = new List<Tool>()
         {
             new Tools.Pencil(),
-            new Tools.CircleBrush()
+            new Tools.CircleBrush(),
+            new Tools.Eraser(),
+            new Tools.LineTool(),
+            new Tools.RectangleTool(),
+            new Tools.FilledRectangleTool(),
+            new Tools.FilledCircleTool()
         };
 
         private void TableClicked(int x, int y)

Gui/Apps/Paint/Tools/Eraser.cs

@@ -0,0 +1,53 @@
+using Cosmos.System;
+using System.Drawing;
+
+namespace CMLeonOS.Gui.Apps.Paint.Tools
+{
+    internal class Eraser : Tool
+    {
+        public Eraser() : base("Eraser")
+        {
+        }
+
+        private bool joinLine;
+        private int joinX;
+        private int joinY;
+
+        internal override void Run(Paint paint, Window canvas, MouseState mouseState, int mouseX, int mouseY)
+        {
+            if (mouseState == MouseState.Left)
+            {
+                if (joinLine)
+                {
+                    canvas.DrawLine(joinX, joinY, mouseX, mouseY, Color.White);
+                }
+
+                for (int y = -4; y <= 4; y++)
+                {
+                    for (int x = -4; x <= 4; x++)
+                    {
+                        int drawX = mouseX + x;
+                        int drawY = mouseY + y;
+                        if (paint.IsInBounds(drawX, drawY))
+                        {
+                            canvas.DrawPoint(drawX, drawY, Color.White);
+                        }
+                    }
+                }
+
+                joinLine = true;
+                joinX = mouseX;
+                joinY = mouseY;
+            }
+            else
+            {
+                joinLine = false;
+            }
+        }
+
+        internal override void Deselected()
+        {
+            joinLine = false;
+        }
+    }
+}

Gui/Apps/Paint/Tools/FilledCircleTool.cs

@@ -0,0 +1,58 @@
+using Cosmos.System;
+using System;
+
+namespace CMLeonOS.Gui.Apps.Paint.Tools
+{
+    internal class FilledCircleTool : Tool
+    {
+        public FilledCircleTool() : base("Filled Circle")
+        {
+        }
+
+        private bool started;
+        private int startX;
+        private int startY;
+
+        internal override void Run(Paint paint, Window canvas, MouseState mouseState, int mouseX, int mouseY)
+        {
+            if (mouseState == MouseState.Left)
+            {
+                if (!started)
+                {
+                    started = true;
+                    startX = mouseX;
+                    startY = mouseY;
+                }
+            }
+            else if (started)
+            {
+                int radiusX = Math.Abs(mouseX - startX);
+                int radiusY = Math.Abs(mouseY - startY);
+                int radius = Math.Max(radiusX, radiusY);
+
+                for (int y = -radius; y <= radius; y++)
+                {
+                    for (int x = -radius; x <= radius; x++)
+                    {
+                        if ((x * x) + (y * y) <= radius * radius)
+                        {
+                            int drawX = startX + x;
+                            int drawY = startY + y;
+                            if (paint.IsInBounds(drawX, drawY))
+                            {
+                                canvas.DrawPoint(drawX, drawY, paint.SelectedColor);
+                            }
+                        }
+                    }
+                }
+
+                started = false;
+            }
+        }
+
+        internal override void Deselected()
+        {
+            started = false;
+        }
+    }
+}

Gui/Apps/Paint/Tools/FilledRectangleTool.cs

@@ -0,0 +1,43 @@
+using Cosmos.System;
+using System;
+
+namespace CMLeonOS.Gui.Apps.Paint.Tools
+{
+    internal class FilledRectangleTool : Tool
+    {
+        public FilledRectangleTool() : base("Filled Rect")
+        {
+        }
+
+        private bool started;
+        private int startX;
+        private int startY;
+
+        internal override void Run(Paint paint, Window canvas, MouseState mouseState, int mouseX, int mouseY)
+        {
+            if (mouseState == MouseState.Left)
+            {
+                if (!started)
+                {
+                    started = true;
+                    startX = mouseX;
+                    startY = mouseY;
+                }
+            }
+            else if (started)
+            {
+                int x = Math.Min(startX, mouseX);
+                int y = Math.Min(startY, mouseY);
+                int width = Math.Abs(mouseX - startX) + 1;
+                int height = Math.Abs(mouseY - startY) + 1;
+                canvas.DrawFilledRectangle(x, y, width, height, paint.SelectedColor);
+                started = false;
+            }
+        }
+
+        internal override void Deselected()
+        {
+            started = false;
+        }
+    }
+}

Gui/Apps/Paint/Tools/LineTool.cs

@@ -0,0 +1,38 @@
+using Cosmos.System;
+
+namespace CMLeonOS.Gui.Apps.Paint.Tools
+{
+    internal class LineTool : Tool
+    {
+        public LineTool() : base("Line")
+        {
+        }
+
+        private bool started;
+        private int startX;
+        private int startY;
+
+        internal override void Run(Paint paint, Window canvas, MouseState mouseState, int mouseX, int mouseY)
+        {
+            if (mouseState == MouseState.Left)
+            {
+                if (!started)
+                {
+                    started = true;
+                    startX = mouseX;
+                    startY = mouseY;
+                }
+            }
+            else if (started)
+            {
+                canvas.DrawLine(startX, startY, mouseX, mouseY, paint.SelectedColor);
+                started = false;
+            }
+        }
+
+        internal override void Deselected()
+        {
+            started = false;
+        }
+    }
+}

Gui/Apps/Paint/Tools/RectangleTool.cs

@@ -0,0 +1,43 @@
+using Cosmos.System;
+using System;
+
+namespace CMLeonOS.Gui.Apps.Paint.Tools
+{
+    internal class RectangleTool : Tool
+    {
+        public RectangleTool() : base("Rectangle")
+        {
+        }
+
+        private bool started;
+        private int startX;
+        private int startY;
+
+        internal override void Run(Paint paint, Window canvas, MouseState mouseState, int mouseX, int mouseY)
+        {
+            if (mouseState == MouseState.Left)
+            {
+                if (!started)
+                {
+                    started = true;
+                    startX = mouseX;
+                    startY = mouseY;
+                }
+            }
+            else if (started)
+            {
+                int x = Math.Min(startX, mouseX);
+                int y = Math.Min(startY, mouseY);
+                int width = Math.Abs(mouseX - startX) + 1;
+                int height = Math.Abs(mouseY - startY) + 1;
+                canvas.DrawRectangle(x, y, width, height, paint.SelectedColor);
+                started = false;
+            }
+        }
+
+        internal override void Deselected()
+        {
+            started = false;
+        }
+    }
+}