Notification when attempt to paste from empty clipboard

CHANGELOG.rst

@@ -8,6 +8,8 @@ Added
   the default arrow cursor.
 * Added a color sampler which can copy colors from images to the
   clipboard in hex format (Images -> Sample Color)
+* Added notification when attempting to paste from an empty or
+  unusable clipboard
 
 
 Fixed

beeref/view.py

@@ -621,7 +621,10 @@ class BeeGraphicsView(MainControlsMixin,
             item.setScale(1 / self.get_scale())
             self.undo_stack.push(commands.InsertItems(self.scene, [item], pos))
             return
-        logger.info('No image data or text in clipboard')
+
+        msg = 'No image data or text in clipboard'
+        logger.info(msg)
+        widgets.BeeNotification(self, msg)
 
     def on_action_open_settings_dir(self):
         dirname = os.path.dirname(self.settings.fileName())

tests/test_view.py

@@ -560,12 +560,16 @@ def test_on_action_paste_when_text(img_mock, text_mock, clear_mock, view):
 @patch('beeref.scene.BeeGraphicsScene.clearSelection')
 @patch('PyQt6.QtGui.QClipboard.text')
 @patch('PyQt6.QtGui.QClipboard.image')
-def test_on_action_paste_when_empty(img_mock, text_mock, clear_mock, view):
+@patch('beeref.widgets.BeeNotification')
+def test_on_action_paste_when_empty(
+        notification_mock, img_mock, text_mock, clear_mock, view):
     view.cancel_active_modes = MagicMock()
     img_mock.return_value = QtGui.QImage()
     text_mock.return_value = ''
     view.on_action_paste()
     assert len(view.scene.items()) == 0
+    notification_mock.assert_called_once_with(
+        view, 'No image data or text in clipboard')
     clear_mock.assert_not_called()
     view.cancel_active_modes.assert_called_once_with()