Fix popups

Fixes the render and container_at order for popups.

Fixes #2210

For rendering:

* render_view_surfaces has been renamed to render_view_toplevels
* render_view_toplevels now uses output_surface_for_each_surface (which
is now public), as that function uses wlr_surface_for_each_surface which
doesn't descend into popups
* Views now have a for_each_popup iterator, which is used by the
renderer to render the focused view's popups
* When rendering a popup, toplevels (xdg subsurfaces) of that popup are
also rendered

For sending frame done, the logic has been updated to match the
rendering logic:

* send_frame_done_container no longer descends into popups
* for_each_popup is used to send frame done to the focused view's popups
and their child toplevels

For container_at:

* floating_container_at is now static, which means it had to be moved
higher in the file.
* container_at now considers popups for the focused view before checking
containers.
* tiling_container_at has been introduced, so that it doesn't call
container_at recursively (it would check popups recursively if it did)

1 files changed, 11 insertions, 0 deletions

diff --git a/include/sway/tree/view.h b/include/sway/tree/view.h
index 0152ed55..9f6d36fe 100644
--- a/include/sway/tree/view.h
+++ b/include/sway/tree/view.h
@@ -47,6 +47,8 @@ struct sway_view_impl {
 	bool (*has_client_side_decorations)(struct sway_view *view);
 	void (*for_each_surface)(struct sway_view *view,
 		wlr_surface_iterator_func_t iterator, void *user_data);
+	void (*for_each_popup)(struct sway_view *view,
+		wlr_surface_iterator_func_t iterator, void *user_data);
 	void (*close)(struct sway_view *view);
 	void (*destroy)(struct sway_view *view);
 };
@@ -248,9 +250,18 @@ void view_close(struct sway_view *view);
 
 void view_damage_from(struct sway_view *view);
 
+/**
+ * Iterate all surfaces of a view (toplevels + popups).
+ */
 void view_for_each_surface(struct sway_view *view,
 	wlr_surface_iterator_func_t iterator, void *user_data);
 
+/**
+ * Iterate all popups recursively.
+ */
+void view_for_each_popup(struct sway_view *view,
+	wlr_surface_iterator_func_t iterator, void *user_data);
+
 // view implementation
 
 void view_init(struct sway_view *view, enum sway_view_type type,