Add support for different spinners

src/Spectre.Console/Progress/Columns/SpinnerColumn.cs

@@ -1,4 +1,6 @@
 using System;
+using System.Linq;
+using Spectre.Console.Internal;
 using Spectre.Console.Rendering;
 
 namespace Spectre.Console
@@ -11,8 +13,8 @@ namespace Spectre.Console
         private const string ACCUMULATED = "SPINNER_ACCUMULATED";
         private const string INDEX = "SPINNER_INDEX";
 
-        private readonly string _ansiSequence = "⣷⣯⣟⡿⢿⣻⣽⣾";
-        private readonly string _asciiSequence = "-\\|/-\\|/";
+        private readonly ProgressSpinner _spinner;
+        private int? _maxLength;
 
         /// <inheritdoc/>
         protected internal override int? ColumnWidth => 1;
@@ -25,26 +27,48 @@ namespace Spectre.Console
         /// </summary>
         public Style Style { get; set; } = new Style(foreground: Color.Yellow);
 
+        /// <summary>
+        /// Initializes a new instance of the <see cref="SpinnerColumn"/> class.
+        /// </summary>
+        public SpinnerColumn()
+            : this(ProgressSpinner.Known.Default)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="SpinnerColumn"/> class.
+        /// </summary>
+        /// <param name="spinner">The spinner to use.</param>
+        public SpinnerColumn(ProgressSpinner spinner)
+        {
+            _spinner = spinner ?? throw new ArgumentNullException(nameof(spinner));
+        }
+
         /// <inheritdoc/>
         public override IRenderable Render(RenderContext context, ProgressTask task, TimeSpan deltaTime)
         {
+            var useAscii = (context.LegacyConsole || !context.Unicode) && _spinner.IsUnicode;
+            var spinner = useAscii ? ProgressSpinner.Known.Ascii : _spinner;
+
             if (!task.IsStarted || task.IsFinished)
             {
-                return new Markup(" ");
+                if (_maxLength == null)
+                {
+                    _maxLength = _spinner.Frames.Max(frame => Cell.GetCellLength(context, frame));
+                }
+
+                return new Markup(new string(' ', _maxLength.Value));
             }
 
             var accumulated = task.State.Update<double>(ACCUMULATED, acc => acc + deltaTime.TotalMilliseconds);
-            if (accumulated >= 100)
+            if (accumulated >= _spinner.Interval.TotalMilliseconds)
             {
                 task.State.Update<double>(ACCUMULATED, _ => 0);
                 task.State.Update<int>(INDEX, index => index + 1);
             }
 
-            var useAscii = context.LegacyConsole || !context.Unicode;
-            var sequence = useAscii ? _asciiSequence : _ansiSequence;
-
             var index = task.State.Get<int>(INDEX);
-            return new Markup(sequence[index % sequence.Length].ToString(), Style ?? Style.Plain);
+            return new Markup(spinner.Frames[index % spinner.Frames.Count], Style ?? Style.Plain);
         }
     }
 }

src/Spectre.Console/Progress/Progress.cs

@@ -26,6 +26,12 @@ namespace Spectre.Console
         /// </summary>
         public bool AutoClear { get; set; }
 
+        /// <summary>
+        /// Gets or sets the refresh rate if <c>AutoRefresh</c> is enabled.
+        /// Defaults to 10 times/second.
+        /// </summary>
+        public TimeSpan RefreshRate { get; set; } = TimeSpan.FromMilliseconds(100);
+
         internal List<ProgressColumn> Columns { get; }
 
         /// <summary>
@@ -110,7 +116,7 @@ namespace Spectre.Console
             if (interactive)
             {
                 var columns = new List<ProgressColumn>(Columns);
-                return new InteractiveProgressRenderer(_console, columns);
+                return new InteractiveProgressRenderer(_console, columns, RefreshRate);
             }
             else
             {

src/Spectre.Console/Progress/ProgressSpinner.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+
+namespace Spectre.Console
+{
+    /// <summary>
+    /// Represents a spinner used in a <see cref="SpinnerColumn"/>.
+    /// </summary>
+    public abstract partial class ProgressSpinner
+    {
+        /// <summary>
+        /// Gets the update interval for the spinner.
+        /// </summary>
+        public abstract TimeSpan Interval { get; }
+
+        /// <summary>
+        /// Gets a value indicating whether or not the spinner
+        /// uses Unicode characters.
+        /// </summary>
+        public abstract bool IsUnicode { get; }
+
+        /// <summary>
+        /// Gets the spinner frames.
+        /// </summary>
+        public abstract IReadOnlyList<string> Frames { get; }
+    }
+}

src/Spectre.Console/Progress/Renderers/InteractiveProgressRenderer.cs

@@ -15,9 +15,9 @@ namespace Spectre.Console.Internal
         private readonly Stopwatch _stopwatch;
         private TimeSpan _lastUpdate;
 
-        public override TimeSpan RefreshRate => TimeSpan.FromMilliseconds(100);
+        public override TimeSpan RefreshRate { get; }
 
-        public InteractiveProgressRenderer(IAnsiConsole console, List<ProgressColumn> columns)
+        public InteractiveProgressRenderer(IAnsiConsole console, List<ProgressColumn> columns, TimeSpan refreshRate)
         {
             _console = console ?? throw new ArgumentNullException(nameof(console));
             _columns = columns ?? throw new ArgumentNullException(nameof(columns));
@@ -25,6 +25,8 @@ namespace Spectre.Console.Internal
             _lock = new object();
             _stopwatch = new Stopwatch();
             _lastUpdate = TimeSpan.Zero;
+
+            RefreshRate = refreshRate;
         }
 
         public override void Started()

src/Spectre.Console/Rendering/LiveRenderable.cs

@@ -1,7 +1,6 @@
 using System.Collections.Generic;
 using System.Linq;
 using Spectre.Console.Internal;
-using Spectre.Console.Rendering;
 
 namespace Spectre.Console.Rendering
 {