Merge pull request #93671 from KoBeWi/burn_the_box

Prevent selecting when a CanvasItem is selected

editor/plugins/canvas_item_editor_plugin.cpp

@@ -780,19 +780,24 @@ bool CanvasItemEditor::_select_click_on_item(CanvasItem *item, Point2 p_click_po
 	return still_selected;
 }
 
-List<CanvasItem *> CanvasItemEditor::_get_edited_canvas_items(bool retrieve_locked, bool remove_canvas_item_if_parent_in_selection) const {
+List<CanvasItem *> CanvasItemEditor::_get_edited_canvas_items(bool p_retrieve_locked, bool p_remove_canvas_item_if_parent_in_selection, bool *r_has_locked_items) const {
 	List<CanvasItem *> selection;
 	for (const KeyValue<Node *, Object *> &E : editor_selection->get_selection()) {
 		CanvasItem *ci = Object::cast_to<CanvasItem>(E.key);
-		if (ci && ci->is_visible_in_tree() && ci->get_viewport() == EditorNode::get_singleton()->get_scene_root() && (retrieve_locked || !_is_node_locked(ci))) {
-			CanvasItemEditorSelectedItem *se = editor_selection->get_node_editor_data<CanvasItemEditorSelectedItem>(ci);
-			if (se) {
-				selection.push_back(ci);
+		if (ci) {
+			if (ci->is_visible_in_tree() && ci->get_viewport() == EditorNode::get_singleton()->get_scene_root() && (p_retrieve_locked || !_is_node_locked(ci))) {
+				CanvasItemEditorSelectedItem *se = editor_selection->get_node_editor_data<CanvasItemEditorSelectedItem>(ci);
+				if (se) {
+					selection.push_back(ci);
+				}
+			} else if (r_has_locked_items) {
+				// CanvasItem is selected, but can't be interacted with.
+				*r_has_locked_items = true;
 			}
 		}
 	}
 
-	if (remove_canvas_item_if_parent_in_selection) {
+	if (p_remove_canvas_item_if_parent_in_selection) {
 		List<CanvasItem *> filtered_selection;
 		for (CanvasItem *E : selection) {
 			if (!selection.find(E->get_parent())) {
@@ -1454,7 +1459,8 @@ bool CanvasItemEditor::_gui_input_rotate(const Ref<InputEvent> &p_event) {
 	if (drag_type == DRAG_NONE) {
 		if (b.is_valid() && b->get_button_index() == MouseButton::LEFT && b->is_pressed()) {
 			if ((b->is_command_or_control_pressed() && !b->is_alt_pressed() && tool == TOOL_SELECT) || tool == TOOL_ROTATE) {
-				List<CanvasItem *> selection = _get_edited_canvas_items();
+				bool has_locked_items = false;
+				List<CanvasItem *> selection = _get_edited_canvas_items(false, true, &has_locked_items);
 
 				// Remove not movable nodes
 				for (CanvasItem *E : selection) {
@@ -1477,6 +1483,11 @@ bool CanvasItemEditor::_gui_input_rotate(const Ref<InputEvent> &p_event) {
 					}
 					_save_canvas_item_state(drag_selection);
 					return true;
+				} else {
+					if (has_locked_items) {
+						EditorToaster::get_singleton()->popup_str(TTR(locked_transform_warning), EditorToaster::SEVERITY_WARNING);
+					}
+					return has_locked_items;
 				}
 			}
 		}
@@ -1917,7 +1928,8 @@ bool CanvasItemEditor::_gui_input_scale(const Ref<InputEvent> &p_event) {
 	// Drag resize handles
 	if (drag_type == DRAG_NONE) {
 		if (b.is_valid() && b->get_button_index() == MouseButton::LEFT && b->is_pressed() && ((b->is_alt_pressed() && b->is_command_or_control_pressed()) || tool == TOOL_SCALE)) {
-			List<CanvasItem *> selection = _get_edited_canvas_items();
+			bool has_locked_items = false;
+			List<CanvasItem *> selection = _get_edited_canvas_items(false, true, &has_locked_items);
 			if (selection.size() == 1) {
 				CanvasItem *ci = selection.front()->get();
 
@@ -1946,6 +1958,11 @@ bool CanvasItemEditor::_gui_input_scale(const Ref<InputEvent> &p_event) {
 					_save_canvas_item_state(drag_selection);
 					return true;
 				}
+			} else {
+				if (has_locked_items) {
+					EditorToaster::get_singleton()->popup_str(TTR(locked_transform_warning), EditorToaster::SEVERITY_WARNING);
+				}
+				return has_locked_items;
 			}
 		}
 	}
@@ -2056,7 +2073,8 @@ bool CanvasItemEditor::_gui_input_move(const Ref<InputEvent> &p_event) {
 		//Start moving the nodes
 		if (b.is_valid() && b->get_button_index() == MouseButton::LEFT && b->is_pressed()) {
 			if ((b->is_alt_pressed() && !b->is_command_or_control_pressed()) || tool == TOOL_MOVE) {
-				List<CanvasItem *> selection = _get_edited_canvas_items();
+				bool has_locked_items = false;
+				List<CanvasItem *> selection = _get_edited_canvas_items(false, true, &has_locked_items);
 
 				if (selection.size() > 0) {
 					drag_selection.clear();
@@ -2089,6 +2107,11 @@ bool CanvasItemEditor::_gui_input_move(const Ref<InputEvent> &p_event) {
 					_save_canvas_item_state(drag_selection);
 
 					return true;
+				} else {
+					if (has_locked_items) {
+						EditorToaster::get_singleton()->popup_str(TTR(locked_transform_warning), EditorToaster::SEVERITY_WARNING);
+					}
+					return has_locked_items;
 				}
 			}
 		}

editor/plugins/canvas_item_editor_plugin.h

@@ -188,6 +188,8 @@ private:
 		GRID_VISIBILITY_HIDE,
 	};
 
+	const String locked_transform_warning = TTRC("All selected CanvasItems are either invisible or locked in some way and can't be transformed.");
+
 	bool selection_menu_additive_selection = false;
 
 	Tool tool = TOOL_SELECT;
@@ -430,7 +432,7 @@ private:
 	ThemePreviewMode theme_preview = THEME_PREVIEW_PROJECT;
 	void _switch_theme_preview(int p_mode);
 
-	List<CanvasItem *> _get_edited_canvas_items(bool retrieve_locked = false, bool remove_canvas_item_if_parent_in_selection = true) const;
+	List<CanvasItem *> _get_edited_canvas_items(bool p_retrieve_locked = false, bool p_remove_canvas_item_if_parent_in_selection = true, bool *r_has_locked_items = nullptr) const;
 	Rect2 _get_encompassing_rect_from_list(const List<CanvasItem *> &p_list);
 	void _expand_encompassing_rect_using_children(Rect2 &r_rect, const Node *p_node, bool &r_first, const Transform2D &p_parent_xform = Transform2D(), const Transform2D &p_canvas_xform = Transform2D(), bool include_locked_nodes = true);
 	Rect2 _get_encompassing_rect(const Node *p_node);