osd: allow clicking an osd item to focus the window

src/desktop.c

@@ -340,6 +340,11 @@ get_cursor_context(struct server *server)
 				ret.node = node;
 				ret.type = LAB_NODE_MENUITEM;
 				return ret;
+			case LAB_NODE_OSD_ITEM:
+				/* Always return the top scene node for osd items */
+				ret.node = node;
+				ret.type = LAB_NODE_OSD_ITEM;
+				return ret;
 			case LAB_NODE_BUTTON_FIRST...LAB_NODE_BUTTON_LAST:
 			case LAB_NODE_SSD_ROOT:
 			case LAB_NODE_TITLE:

src/input/cursor.c

@@ -30,6 +30,7 @@
 #include "labwc.h"
 #include "layers.h"
 #include "menu/menu.h"
+#include "osd.h"
 #include "output.h"
 #include "resistance.h"
 #include "resize-outlines.h"
@@ -1190,6 +1191,12 @@ cursor_process_button_release(struct seat *seat, uint32_t button,
 		}
 		return notify;
 	}
+	if (server->input_mode == LAB_INPUT_STATE_WINDOW_SWITCHER) {
+		if (ctx.type == LAB_NODE_OSD_ITEM) {
+			osd_on_cursor_release(server, ctx.node);
+		}
+		return notify;
+	}
 
 	if (server->input_mode != LAB_INPUT_STATE_PASSTHROUGH) {
 		return notify;

src/node.c

@@ -59,6 +59,15 @@ node_menuitem_from_node(struct wlr_scene_node *wlr_scene_node)
 	return (struct menuitem *)node_descriptor->data;
 }
 
+struct osd_item *
+node_osd_item_from_node(struct wlr_scene_node *wlr_scene_node)
+{
+	assert(wlr_scene_node->data);
+	struct node_descriptor *node_descriptor = wlr_scene_node->data;
+	assert(node_descriptor->type == LAB_NODE_OSD_ITEM);
+	return (struct osd_item *)node_descriptor->data;
+}
+
 struct ssd_button *
 node_try_ssd_button_from_node(struct wlr_scene_node *wlr_scene_node)
 {

src/osd/osd-classic.c

@@ -161,6 +161,8 @@ osd_classic_create(struct output *output, struct wl_array *views)
 		wl_list_append(&output->osd_scene.items, &item->base.link);
 		item->base.view = *view;
 		item->base.tree = wlr_scene_tree_create(output->osd_scene.tree);
+		node_descriptor_create(&item->base.tree->node,
+			LAB_NODE_OSD_ITEM, NULL, item);
 		/*
 		 *    OSD border
 		 * +---------------------------------+
@@ -200,6 +202,11 @@ osd_classic_create(struct output *output, struct wl_array *views)
 			item->active_tree, &highlight_opts);
 		wlr_scene_node_set_position(&highlight_rect->tree->node, padding, y);
 
+		/* hitbox for mouse clicks */
+		struct wlr_scene_rect *hitbox = wlr_scene_rect_create(item->base.tree,
+			w - 2 * padding, switcher_theme->item_height, (float[4]) {0});
+		wlr_scene_node_set_position(&hitbox->node, padding, y);
+
 		create_fields_scene(server, *view, item->normal_tree,
 			text_color, bg_color, field_widths_sum, x, y);
 		create_fields_scene(server, *view, item->active_tree,

src/osd/osd-thumbnail.c

@@ -128,6 +128,7 @@ create_item_scene(struct wlr_scene_tree *parent, struct view *view,
 	struct osd_thumbnail_item *item = znew(*item);
 	wl_list_append(&output->osd_scene.items, &item->base.link);
 	struct wlr_scene_tree *tree = wlr_scene_tree_create(parent);
+	node_descriptor_create(&tree->node, LAB_NODE_OSD_ITEM, NULL, item);
 	item->base.tree = tree;
 	item->base.view = view;
 
@@ -142,6 +143,10 @@ create_item_scene(struct wlr_scene_tree *parent, struct view *view,
 	};
 	item->active_bg = lab_scene_rect_create(tree, &opts);
 
+	/* hitbox for mouse clicks */
+	wlr_scene_rect_create(tree, switcher_theme->item_width,
+		switcher_theme->item_height, (float[4]) {0});
+
 	/* thumbnail */
 	struct wlr_buffer *thumb_buffer = render_thumb(output, view);
 	if (thumb_buffer) {

src/osd/osd.c

@@ -144,6 +144,16 @@ osd_on_view_destroy(struct view *view)
 	}
 }
 
+void
+osd_on_cursor_release(struct server *server, struct wlr_scene_node *node)
+{
+	assert(server->input_mode == LAB_INPUT_STATE_WINDOW_SWITCHER);
+
+	struct osd_item *item = node_osd_item_from_node(node);
+	server->osd_state.cycle_view = item->view;
+	osd_finish(server, /*switch_focus*/ true);
+}
+
 static void
 restore_preview_node(struct server *server)
 {