make simulator threads pre-emptible

1 files changed, 5 insertions, 0 deletions

diff --git a/lib/extensions/params.py b/lib/extensions/params.py
index 306e5e56..1262ceb6 100644
--- a/lib/extensions/params.py
+++ b/lib/extensions/params.py
@@ -25,6 +25,7 @@ from ..i18n import _
 from ..svg.tags import SVG_POLYLINE_TAG
 from ..utils import get_resource_dir
 from .base import InkstitchExtension
+from ..utils.threading import ExitThread, check_stop_flag
 
 
 def grouper(iterable_obj, count, fillvalue=None):
@@ -509,9 +510,13 @@ class SettingsFrame(wx.Frame):
                 # for many params in embroider.py.
 
                 patches.extend(copy(node).embroider(None))
+
+                check_stop_flag()
         except SystemExit:
             wx.CallAfter(self._show_warning)
             raise
+        except ExitThread:
+            raise
         except Exception as e:
             # Ignore errors.  This can be things like incorrect paths for
             # satins or division by zero caused by incorrect param values.