tastudio: fix editing while unpaused + left button held scenario.

now it replicates taseditor:
- editing input while unpaused, if autorestore is off, resumes emulation and ignores seek frame. if you keep holding the LMB, and follow cursor is on, it will keep scrolling, drawing and emulating
- editing input while unpaused, if autoresotre is on, fires autorestore and then just pauses on the seek frame

what's different from taseditor:
- with autorestore and follow cursor on, if you hold the button, and seek frame is below the view, it will keep scrolling down, drawing new input and emulating. taseditor does *not* follow cursor while seeking.

this all doesn't necessarily make sense, but we need people to figure out what is best for work.

BizHawk.Client.EmuHawk/CustomControls/InputRoll.cs

@@ -1042,7 +1042,6 @@ namespace BizHawk.Client.EmuHawk
 				{
 					if (ModifierKeys == Keys.Alt)
 					{
-						// MessageBox.Show("Alt click logic is not yet implemented");
                         // do marker drag here
 					}
 					else if (ModifierKeys == Keys.Shift)
@@ -1431,8 +1430,8 @@ namespace BizHawk.Client.EmuHawk
 
 			if (!GlobalWin.MainForm.EmulatorPaused && _currentX.HasValue)
 			{
+				// copypaste from OnMouseMove()
 				Cell newCell = CalculatePointedCell(_currentX.Value, _currentY.Value);
-				// SuuperW: Hide lag frames
 				if (QueryFrameLag != null && newCell.RowIndex.HasValue)
 				{
 					newCell.RowIndex += CountLagFramesDisplay(newCell.RowIndex.Value);
@@ -1455,7 +1454,7 @@ namespace BizHawk.Client.EmuHawk
 						Refresh();
 					}
 				}
-				else if (_columnDown != null)  // Kind of silly feeling to have this check twice, but the only alternative I can think of has it refreshing twice when pointed column changes with column down, and speed matters
+				else if (_columnDown != null)
 				{
 					Refresh();
 				}

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

@@ -112,7 +112,7 @@ namespace BizHawk.Client.EmuHawk
 
 		private void MaybeFollowCursor()
 		{
-			if (TasPlaybackBox.FollowCursor && !mouseButtonHeld)
+			if (TasPlaybackBox.FollowCursor)
 				SetVisibleIndex();
 		}
 	}

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

@@ -777,13 +777,13 @@ namespace BizHawk.Client.EmuHawk
 			}
 			else
 			{
-				// feos: if we disable autorestore, we shouldn't ever get it paused
-				// moreover, this function is only called if we *were* paused, so the check makes no sense
-				//if (_autoRestorePaused.HasValue && !_autoRestorePaused.Value)
-				//	GlobalWin.MainForm.UnpauseEmulator();
+				if (_autoRestorePaused.HasValue && !_autoRestorePaused.Value)
+				{
+					// this happens when we're holding the left button while unpaused - view scrolls down, new input gets drawn, seek pauses
+					IgnoreSeekFrame = true;
+					GlobalWin.MainForm.UnpauseEmulator();
+				}
 				_autoRestorePaused = null;
-				// feos: seek gets triggered by the previous function, so we don't wanna kill the seek frame before it ends
-				//GlobalWin.MainForm.PauseOnFrame = null; // Cancel seek to autorestore point
 			}
 			_autoRestoreFrame = null;
 		}