Implement popup_during_fullscreen

This introduces a new view_impl function: is_transient_for. Similar to
container_has_ancestor but works using the surface parents rather than
the tree.

This patch modifies view_is_visible, container_at and so on to allow
transient views to function normally when they're in front of a
fullscreen view.

1 files changed, 11 insertions, 0 deletions

diff --git a/sway/desktop/render.c b/sway/desktop/render.c
index c8b08a58..c2a0d29f 100644
--- a/sway/desktop/render.c
+++ b/sway/desktop/render.c
@@ -961,6 +961,17 @@ void output_render(struct sway_output *output, struct timespec *when,
                         render_container(output, damage, fullscreen_con,
                                         fullscreen_con->current.focused);
                 }
+
+                if (config->popup_during_fullscreen == POPUP_SMART &&
+                                fullscreen_con->view) {
+                        for (int i = 0; i < workspace->floating->length; ++i) {
+                                struct sway_container *floater = workspace->floating->items[i];
+                                if (floater->view && view_is_transient_for(
+                                                        floater->view, fullscreen_con->view)) {
+                                        render_floating_container(output, damage, floater);
+                                }
+                        }
+                }
 #ifdef HAVE_XWAYLAND
                 render_unmanaged(output, damage, &root->xwayland_unmanaged);
 #endif