Modify the bug

d69a087e · SLLH · 42230e04 · d69a087e
Commit d69a087e authored Dec 07, 2021 by SLLH
Hide whitespace changes
Inline Side-by-side

Showing with 2 additions and 1 deletion

PPOCRLabel/libs/canvas.py PPOCRLabel/libs/canvas.py +2 -1

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--- 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: