Merge pull request #4861 from d2623587501/dygraph

Modify the bug
2021-12-08 13:15:01 +08:00 · 2021-12-08 13:15:01 +08:00 · ae6db2fd1a
parent 66387429f0 d69a087eb7
commit ae6db2fd1a
1 changed files with 2 additions and 1 deletions
--- a/PPOCRLabel/libs/canvas.py
+++ b/PPOCRLabel/libs/canvas.py
@ -704,8 +704,9 @@ class Canvas(QWidget):

    def keyPressEvent(self, ev):
        key = ev.key()
-        shapesBackup = []
        shapesBackup = copy.deepcopy(self.shapes)
+        if len(shapesBackup) == 0:
+            return
        self.shapesBackups.pop()
        self.shapesBackups.append(shapesBackup)
        if key == Qt.Key_Escape and self.current: