Compress mirror image in undo/redo

src/UI/Dialogs/ImageEffects/FlipImageDialog.gd

@@ -51,37 +51,34 @@ func _commit_undo(action: String, undo_data: Dictionary, project: Project) -> vo
 	var redo_data := _get_undo_data(project)
 	project.undos += 1
 	project.undo_redo.create_action(action)
-	project.undo_redo.add_do_property(project, "selection_map", redo_data["selection_map"])
-	project.undo_redo.add_do_property(project, "selection_offset", redo_data["outline_offset"])
-	project.undo_redo.add_undo_property(project, "selection_map", undo_data["selection_map"])
-	project.undo_redo.add_undo_property(project, "selection_offset", undo_data["outline_offset"])
-
-	for image in redo_data:
-		if not image is Image:
-			continue
-		project.undo_redo.add_do_property(image, "data", redo_data[image])
-	for image in undo_data:
-		if not image is Image:
-			continue
-		project.undo_redo.add_undo_property(image, "data", undo_data[image])
+	if redo_data.has("selection_map"):
+		project.undo_redo.add_do_property(project, "selection_map", redo_data["selection_map"])
+		project.undo_redo.add_do_property(project, "selection_offset", redo_data["outline_offset"])
+		project.undo_redo.add_undo_property(project, "selection_map", undo_data["selection_map"])
+		project.undo_redo.add_undo_property(
+			project, "selection_offset", undo_data["outline_offset"]
+		)
+		project.undo_redo.add_do_method(project.selection_map_changed)
+		project.undo_redo.add_undo_method(project.selection_map_changed)
+
+	Global.undo_redo_compress_images(redo_data, undo_data, project)
 	project.undo_redo.add_do_method(Global.undo_or_redo.bind(false, -1, -1, project))
-	project.undo_redo.add_do_method(project.selection_map_changed)
 	project.undo_redo.add_undo_method(Global.undo_or_redo.bind(true, -1, -1, project))
-	project.undo_redo.add_undo_method(project.selection_map_changed)
 	project.undo_redo.commit_action()
 
 
 func _get_undo_data(project: Project) -> Dictionary:
-	var bitmap_image := SelectionMap.new()
-	bitmap_image.copy_from(project.selection_map)
+	var affect_selection := selection_checkbox.button_pressed and project.has_selection
 	var data := {}
-	data["selection_map"] = bitmap_image
-	data["outline_offset"] = project.selection_offset
+	if affect_selection:
+		var bitmap_image := SelectionMap.new()
+		bitmap_image.copy_from(project.selection_map)
+		data["selection_map"] = bitmap_image
+		data["outline_offset"] = project.selection_offset
 
 	var images := _get_selected_draw_images(project)
 	for image in images:
 		data[image] = image.data
-
 	return data