Merge pull request #83507 from timothyqiu/abt-close

Readd close button for nodes in `AnimationNodeBlendTree` editor

editor/editor_themes.cpp

@@ -2046,12 +2046,13 @@ Ref<Theme> create_editor_theme(const Ref<Theme> p_theme) {
 	graphn_sb_panel_selected->set_corner_radius_individual(0, 0, corner_radius * EDSCALE, corner_radius * EDSCALE);
 	graphn_sb_panel_selected->set_expand_margin(SIDE_TOP, 17 * EDSCALE);
 
-	const int gn_titlebar_margin_side = 12;
-	Ref<StyleBoxFlat> graphn_sb_titlebar = make_flat_stylebox(graphnode_bg, gn_titlebar_margin_side, gn_margin_top, gn_titlebar_margin_side, 0, corner_width);
+	const int gn_titlebar_margin_left = 12;
+	const int gn_titlebar_margin_right = 4; // The rest is for the close button.
+	Ref<StyleBoxFlat> graphn_sb_titlebar = make_flat_stylebox(graphnode_bg, gn_titlebar_margin_left, gn_margin_top, gn_titlebar_margin_right, 0, corner_width);
 	graphn_sb_titlebar->set_expand_margin(SIDE_TOP, 2 * EDSCALE);
 	graphn_sb_titlebar->set_corner_radius_individual(corner_radius * EDSCALE, corner_radius * EDSCALE, 0, 0);
 
-	Ref<StyleBoxFlat> graphn_sb_titlebar_selected = make_flat_stylebox(graph_node_selected_border_color, gn_titlebar_margin_side, gn_margin_top, gn_titlebar_margin_side, 0, corner_width);
+	Ref<StyleBoxFlat> graphn_sb_titlebar_selected = make_flat_stylebox(graph_node_selected_border_color, gn_titlebar_margin_left, gn_margin_top, gn_titlebar_margin_right, 0, corner_width);
 	graphn_sb_titlebar_selected->set_corner_radius_individual(corner_radius * EDSCALE, corner_radius * EDSCALE, 0, 0);
 	graphn_sb_titlebar_selected->set_expand_margin(SIDE_TOP, 2 * EDSCALE);
 	Ref<StyleBoxEmpty> graphn_sb_slot = make_empty_stylebox(12, 0, 12, 0);

editor/plugins/animation_blend_tree_editor_plugin.cpp

@@ -170,7 +170,15 @@ void AnimationNodeBlendTreeEditor::update_graph() {
 			name->connect("text_changed", callable_mp(this, &AnimationNodeBlendTreeEditor::_node_rename_lineedit_changed), CONNECT_DEFERRED);
 			base = 1;
 			agnode->set_closable(true);
-			node->connect("delete_request", callable_mp(this, &AnimationNodeBlendTreeEditor::_delete_node_request).bind(E), CONNECT_DEFERRED);
+
+			if (!read_only) {
+				Button *delete_button = memnew(Button);
+				delete_button->set_flat(true);
+				delete_button->set_focus_mode(FOCUS_NONE);
+				delete_button->set_icon(get_editor_theme_icon(SNAME("Close")));
+				delete_button->connect("pressed", callable_mp(this, &AnimationNodeBlendTreeEditor::_delete_node_request).bind(E), CONNECT_DEFERRED);
+				node->get_titlebar_hbox()->add_child(delete_button);
+			}
 		}
 
 		for (int i = 0; i < agnode->get_input_count(); i++) {