scene_graph: port wlr_forgein_toplevel_management output enter/leave events

3 files changed, 55 insertions, 0 deletions

diff --git a/include/sway/tree/container.h b/include/sway/tree/container.h
index 37a6b2b3..93f6bfbb 100644
--- a/include/sway/tree/container.h
+++ b/include/sway/tree/container.h
@@ -91,6 +91,10 @@ struct sway_container {
         } border;
 
         struct wlr_scene_tree *content_tree;
+        struct wlr_scene_buffer *output_handler;
+
+        struct wl_listener output_enter;
+        struct wl_listener output_leave;
 
         struct sway_container_state current;
         struct sway_container_state pending;
diff --git a/sway/desktop/transaction.c b/sway/desktop/transaction.c
index 980e839e..acc3e3f9 100644
--- a/sway/desktop/transaction.c
+++ b/sway/desktop/transaction.c
@@ -385,6 +385,10 @@ static void arrange_container(struct sway_container *con,
         // make sure it's enabled for viewing
         wlr_scene_node_set_enabled(&con->scene_tree->node, true);
 
+        if (con->output_handler) {
+                wlr_scene_buffer_set_dest_size(con->output_handler, width, height);
+        }
+
         if (con->view) {
                 int border_top = container_titlebar_height();
                 int border_width = con->current.border_thickness;
diff --git a/sway/tree/container.c b/sway/tree/container.c
index b19081fc..30cb97ba 100644
--- a/sway/tree/container.c
+++ b/sway/tree/container.c
@@ -25,6 +25,35 @@
 #include "log.h"
 #include "stringop.h"
 
+static void handle_output_enter(
+                struct wl_listener *listener, void *data) {
+        struct sway_container *con = wl_container_of(
+                        listener, con, output_enter);
+        struct wlr_scene_output *output = data;
+
+        if (con->view->foreign_toplevel) {
+                wlr_foreign_toplevel_handle_v1_output_enter(
+                        con->view->foreign_toplevel, output->output);
+        }
+}
+
+static void handle_output_leave(
+                struct wl_listener *listener, void *data) {
+        struct sway_container *con = wl_container_of(
+                        listener, con, output_leave);
+        struct wlr_scene_output *output = data;
+
+        if (con->view->foreign_toplevel) {
+                wlr_foreign_toplevel_handle_v1_output_leave(
+                        con->view->foreign_toplevel, output->output);
+        }
+}
+
+static bool handle_point_accepts_input(
+                struct wlr_scene_buffer *buffer, double *x, double *y) {
+        return false;
+}
+
 static struct wlr_scene_rect *alloc_rect_node(struct wlr_scene_tree *parent,
                 bool *failed) {
         if (*failed) {
@@ -63,6 +92,7 @@ struct sway_container *container_create(struct sway_view *view) {
         //     - content_tree (we put the content node here so when we disable the
         //       border everything gets disabled. We only render the content iff there
         //       is a border as well)
+        //     - buffer used for output enter/leave events for foreign_toplevel
         bool failed = false;
         c->scene_tree = alloc_scene_tree(root->staging, &failed);
 
@@ -90,6 +120,22 @@ struct sway_container *container_create(struct sway_view *view) {
                 c->border.bottom = alloc_rect_node(c->border.tree, &failed);
                 c->border.left = alloc_rect_node(c->border.tree, &failed);
                 c->border.right = alloc_rect_node(c->border.tree, &failed);
+
+                c->output_handler = wlr_scene_buffer_create(c->border.tree, NULL);
+                if (!c->output_handler) {
+                        sway_log(SWAY_ERROR, "Failed to allocate a scene node");
+                        failed = true;
+                }
+
+                if (!failed) {
+                        c->output_enter.notify = handle_output_enter;
+                        wl_signal_add(&c->output_handler->events.output_enter,
+                                        &c->output_enter);
+                        c->output_leave.notify = handle_output_leave;
+                        wl_signal_add(&c->output_handler->events.output_leave,
+                                        &c->output_leave);
+                        c->output_handler->point_accepts_input = handle_point_accepts_input;
+                }
         }
 
         if (!failed && !scene_descriptor_assign(&c->scene_tree->node,
@@ -456,6 +502,7 @@ void container_destroy(struct sway_container *con) {
 
         if (con->view && con->view->container == con) {
                 con->view->container = NULL;
+                wlr_scene_node_destroy(&con->output_handler->node);
                 if (con->view->destroying) {
                         view_destroy(con->view);
                 }