action: allow configurable policy in AutoPlace action

Closes: #1784.

src/action.c

@@ -422,6 +422,19 @@ action_arg_from_xml_node(struct action *action, const char *nodename, const char
 			goto cleanup;
 		}
 		break;
+	case ACTION_TYPE_AUTO_PLACE:
+		if (!strcmp(argument, "policy")) {
+			enum view_placement_policy policy =
+				view_placement_parse(content);
+			if (policy == LAB_PLACE_INVALID) {
+				wlr_log(WLR_ERROR, "Invalid argument for action %s: '%s' (%s)",
+						action_names[action->type], argument, content);
+			} else {
+				action_arg_add_int(action, argument, policy);
+			}
+			goto cleanup;
+		}
+		break;
 	}
 
 	wlr_log(WLR_ERROR, "Invalid argument for action %s: '%s'",
@@ -1030,10 +1043,10 @@ actions_run(struct view *activator, struct server *server,
 			break;
 		case ACTION_TYPE_AUTO_PLACE:
 			if (view) {
-				struct wlr_box geometry = view->pending;
-				if (placement_find_best(view, &geometry)) {
-					view_move(view, geometry.x, geometry.y);
-				}
+				enum view_placement_policy policy =
+					action_get_int(action, "policy", LAB_PLACE_AUTOMATIC);
+				view_place_by_policy(view,
+					/* allow_cursor */ true, policy);
 			}
 			break;
 		case ACTION_TYPE_TOGGLE_TEARING:

src/config/rcxml.c

@@ -873,11 +873,8 @@ entry(xmlNode *node, char *nodename, char *content)
 	} else if (!strcasecmp(nodename, "reuseOutputMode.core")) {
 		set_bool(content, &rc.reuse_output_mode);
 	} else if (!strcmp(nodename, "policy.placement")) {
-		if (!strcmp(content, "automatic")) {
-			rc.placement_policy = LAB_PLACE_AUTOMATIC;
-		} else if (!strcmp(content, "cursor")) {
-			rc.placement_policy = LAB_PLACE_CURSOR;
-		} else {
+		rc.placement_policy = view_placement_parse(content);
+		if (rc.placement_policy == LAB_PLACE_INVALID) {
 			rc.placement_policy = LAB_PLACE_CENTER;
 		}
 	} else if (!strcmp(nodename, "name.theme")) {

src/view.c

@@ -833,12 +833,13 @@ view_center(struct view *view, const struct wlr_box *ref)
 }
 
 void
-view_place_initial(struct view *view, bool allow_cursor)
+view_place_by_policy(struct view *view, bool allow_cursor,
+		enum view_placement_policy policy)
 {
-	if (allow_cursor && rc.placement_policy == LAB_PLACE_CURSOR) {
+	if (allow_cursor && policy == LAB_PLACE_CURSOR) {
 		view_move_to_cursor(view);
 		return;
-	} else if (rc.placement_policy == LAB_PLACE_AUTOMATIC) {
+	} else if (policy == LAB_PLACE_AUTOMATIC) {
 		struct wlr_box geometry = view->pending;
 		if (placement_find_best(view, &geometry)) {
 			view_move(view, geometry.x, geometry.y);
@@ -1866,6 +1867,24 @@ view_edge_parse(const char *direction)
 	}
 }
 
+enum view_placement_policy
+view_placement_parse(const char *policy)
+{
+	if (!policy) {
+		return LAB_PLACE_CENTER;
+	}
+
+	if (!strcasecmp(policy, "automatic")) {
+		return LAB_PLACE_AUTOMATIC;
+	} else if (!strcasecmp(policy, "cursor")) {
+		return LAB_PLACE_CURSOR;
+	} else if (!strcasecmp(policy, "center")) {
+		return LAB_PLACE_CENTER;
+	}
+
+	return LAB_PLACE_INVALID;
+}
+
 void
 view_snap_to_edge(struct view *view, enum view_edge edge,
 			bool across_outputs, bool store_natural_geometry)
@@ -1969,7 +1988,8 @@ view_move_to_output(struct view *view, struct output *output)
 		struct wlr_box output_area = output_usable_area_in_layout_coords(output);
 		view->pending.x = output_area.x;
 		view->pending.y = output_area.y;
-		view_place_initial(view, /* allow_cursor */ false);
+		view_place_by_policy(view,
+				/* allow_cursor */ false, rc.placement_policy);
 	} else if (view->maximized != VIEW_AXIS_NONE) {
 		view_apply_maximized_geometry(view);
 	} else if (view->tiled) {

src/xdg.c

@@ -530,7 +530,7 @@ set_initial_position(struct view *view)
 	}
 
 	/* All other views are placed according to a configured strategy */
-	view_place_initial(view, /* allow_cursor */ true);
+	view_place_by_policy(view, /* allow_cursor */ true, rc.placement_policy);
 }
 
 static const char *

src/xwayland.c

@@ -571,7 +571,8 @@ set_initial_position(struct view *view,
 		view_constrain_size_to_that_of_usable_area(view);
 
 		if (view_is_floating(view)) {
-			view_place_initial(view, /* allow_cursor */ true);
+			view_place_by_policy(view,
+				/* allow_cursor */ true, rc.placement_policy);
 		} else {
 			/*
 			 * View is maximized/fullscreen. Center the