tastudio - implement follow cursor

BizHawk.Client.Common/config/Config.cs

@@ -531,6 +531,7 @@ namespace BizHawk.Client.Common
 		public bool TAStudioDrawInput = true;
 		public bool TAStudioAutoPause = true;
 		public bool TAStudioAutoRestoreLastPosition = false;
+		public bool TAStudioFollowCursor = true;
 
 		// VirtualPad Dialog
 		public ToolDialogSettings VirtualPadSettings = new ToolDialogSettings();

BizHawk.Client.EmuHawk/tools/TAStudio/PlaybackBox.Designer.cs

@@ -85,13 +85,13 @@
 			// FollowCursorCheckbox
 			// 
 			this.FollowCursorCheckbox.AutoSize = true;
-			this.FollowCursorCheckbox.Enabled = false;
 			this.FollowCursorCheckbox.Location = new System.Drawing.Point(10, 48);
 			this.FollowCursorCheckbox.Name = "FollowCursorCheckbox";
 			this.FollowCursorCheckbox.Size = new System.Drawing.Size(89, 17);
 			this.FollowCursorCheckbox.TabIndex = 5;
 			this.FollowCursorCheckbox.Text = "Follow Cursor";
 			this.FollowCursorCheckbox.UseVisualStyleBackColor = true;
+			this.FollowCursorCheckbox.CheckedChanged += new System.EventHandler(this.FollowCursorCheckbox_CheckedChanged);
 			// 
 			// NextMarkerButton
 			// 

BizHawk.Client.EmuHawk/tools/TAStudio/PlaybackBox.cs

@@ -47,6 +47,21 @@ namespace BizHawk.Client.EmuHawk
 			}
 		}
 
+		[Browsable(false)]
+		[DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Hidden)]
+		public bool FollowCursor
+		{
+			get
+			{
+				return Global.Config.TAStudioFollowCursor;
+			}
+
+			set
+			{
+				FollowCursorCheckbox.Checked = Global.Config.TAStudioFollowCursor = value;
+			}
+		}
+
 		public PlaybackBox()
 		{
 			InitializeComponent();
@@ -55,6 +70,7 @@ namespace BizHawk.Client.EmuHawk
 			{
 				TurboSeekCheckbox.Checked = Global.Config.TurboSeek;
 				AutoRestoreCheckbox.Checked = Global.Config.TAStudioAutoRestoreLastPosition;
+				FollowCursorCheckbox.Checked = Global.Config.TAStudioFollowCursor;
 			}
 			_programmaticallyChangingValue = false;
 		}
@@ -99,5 +115,19 @@ namespace BizHawk.Client.EmuHawk
 				Global.Config.TAStudioAutoRestoreLastPosition ^= true;
 			}
 		}
+
+		private void FollowCursorCheckbox_CheckedChanged(object sender, EventArgs e)
+		{
+			if (!_programmaticallyChangingValue)
+			{
+				Global.Config.TAStudioFollowCursor ^= true;
+
+				if (Global.Config.TAStudioFollowCursor)
+				{
+					Tastudio.SetVisibleIndex();
+					Tastudio.RefreshDialog();
+				}
+			}
+		}
 	}
 }

BizHawk.Client.EmuHawk/tools/TAStudio/TAStudio.IToolForm.cs

@@ -21,7 +21,11 @@ namespace BizHawk.Client.EmuHawk
 				return;
 			}
 
-			SetVisibleIndex();
+			if (TasPlaybackBox.FollowCursor)
+			{
+				SetVisibleIndex();
+			}
+
 			RefreshDialog();
 		}
 
@@ -33,7 +37,11 @@ namespace BizHawk.Client.EmuHawk
 			}
 
 			TasView.RowCount = _currentTasMovie.InputLogLength + 1;
-			SetVisibleIndex();
+
+			if (TasPlaybackBox.FollowCursor)
+			{
+				SetVisibleIndex();
+			}
 		}
 
 		public void Restart()
@@ -81,7 +89,7 @@ namespace BizHawk.Client.EmuHawk
 			return true;
 		}
 
-		private void SetVisibleIndex(int? indexThatMustBeVisible = null)
+		public void SetVisibleIndex(int? indexThatMustBeVisible = null)
 		{
 			if (!indexThatMustBeVisible.HasValue)
 			{