Add 'New Scene' action

beeref/actions/actions.py

@@ -114,4 +114,10 @@ actions = [
         'group': 'active_when_selection',
         'enabled': False,
     },
+    {
+        'id': 'new_scene',
+        'text': '&New Scene',
+        'shortcuts': ['Ctrl+N'],
+        'callback': 'clear_scene',
+    },
 ]

beeref/actions/menu_structure.py

@@ -19,7 +19,9 @@ menu_structure = [
     {
         'menu': '&File',
         'items': [
+            'new_scene',
             'open',
+            MENU_SEPARATOR,
             'save',
             'save_as',
             MENU_SEPARATOR,

beeref/view.py

@@ -102,6 +102,13 @@ class BeeGraphicsView(QtWidgets.QGraphicsView, ActionsMixin):
         return QtCore.QPoint(self.size().width() / 2,
                              self.size().height() / 2)
 
+    def clear_scene(self):
+        logging.debug('Clearing scene...')
+        self.scene.clear()
+        self.undo_stack.clear()
+        self.filename = None
+        self.setTransform(QtGui.QTransform())
+
     def on_action_undo(self):
         logger.debug('Undo: %s' % self.undo_stack.undoText())
         self.undo_stack.undo()
@@ -132,8 +139,7 @@ class BeeGraphicsView(QtWidgets.QGraphicsView, ActionsMixin):
 
     def open_from_file(self, filename):
         logger.info(f'Opening file {filename}')
-        self.scene.clear()
-        self.undo_stack.clear()
+        self.clear_scene()
         try:
             progress = BeeProgressDialog(
                 'Loading %s' % filename,

tests/test_view.py

@@ -1,6 +1,6 @@
 import os.path
 import tempfile
-from unittest.mock import patch
+from unittest.mock import MagicMock, patch
 
 from PyQt6 import QtGui, QtWidgets
 
@@ -64,11 +64,27 @@ class BeeGraphicsViewTestCase(BeeTestCase):
         assert '*.png' in formats
         assert '*.jpg' in formats
 
-    def test_open_from_file(self):
+    def test_clear_scene(self):
+        item = BeePixmapItem(QtGui.QImage())
+        self.view.scene.addItem(item)
+        self.view.scale(2, 2)
+        self.view.translate(123, 456)
+        self.view.filename = 'test.bee'
+        self.view.undo_stack = MagicMock()
+
+        self.view.clear_scene()
+        assert not self.view.scene.items()
+        assert self.view.transform().isIdentity()
+        assert self.view.filename is None
+        self.view.undo_stack.clear.assert_called_once_with()
+
+    @patch('beeref.view.BeeGraphicsView.clear_scene')
+    def test_open_from_file(self, clear_mock):
         root = os.path.dirname(__file__)
         filename = os.path.join(root, 'assets', 'test1item.bee')
         self.view.open_from_file(filename)
         assert len(self.view.scene.items()) == 1
+        clear_mock.assert_called_once_with()
 
     @patch('PyQt6.QtWidgets.QMessageBox.warning')
     def test_open_from_file_when_error(self, warn_mock):