Add support for moving the cursor

2025-12-21 17:35:47 +08:00 · 2020-10-28 10:51:25 +01:00
parent 93d1971f48
commit a1d11e9d0c
29 changed files with 543 additions and 116 deletions
--- a/src/Spectre.Console/Internal/Backends/Ansi/AnsiCursor.cs
+++ b/src/Spectre.Console/Internal/Backends/Ansi/AnsiCursor.cs
@@ -0,0 +1,56 @@
+using System;
+using Spectre.Console.Rendering;
+
+namespace Spectre.Console.Internal
+{
+    internal sealed class AnsiCursor : IAnsiConsoleCursor
+    {
+        private readonly AnsiBackend _renderer;
+
+        public AnsiCursor(AnsiBackend renderer)
+        {
+            _renderer = renderer ?? throw new ArgumentNullException(nameof(renderer));
+        }
+
+        public void Show(bool show)
+        {
+            if (show)
+            {
+                _renderer.Write(Segment.Control("\u001b[?25h"));
+            }
+            else
+            {
+                _renderer.Write(Segment.Control("\u001b[?25l"));
+            }
+        }
+
+        public void Move(CursorDirection direction, int steps)
+        {
+            if (steps == 0)
+            {
+                return;
+            }
+
+            switch (direction)
+            {
+                case CursorDirection.Up:
+                    _renderer.Write(Segment.Control($"\u001b[{steps}A"));
+                    break;
+                case CursorDirection.Down:
+                    _renderer.Write(Segment.Control($"\u001b[{steps}B"));
+                    break;
+                case CursorDirection.Right:
+                    _renderer.Write(Segment.Control($"\u001b[{steps}C"));
+                    break;
+                case CursorDirection.Left:
+                    _renderer.Write(Segment.Control($"\u001b[{steps}D"));
+                    break;
+            }
+        }
+
+        public void SetPosition(int column, int line)
+        {
+            _renderer.Write(Segment.Control($"\u001b[{line};{column}H"));
+        }
+    }
+}