From 3562b9d30329b0c3efd81f81ec4801bcbd88729c Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Wed, 16 Jun 2021 20:52:40 +0200
Subject: [PATCH] Implement surface-suspension-v1

---
 include/sway/server.h |  2 ++
 sway/server.c         |  4 ++++
 sway/tree/workspace.c | 27 +++++++++++++++++++++++++++
 3 files changed, 33 insertions(+)

diff --git a/include/sway/server.h b/include/sway/server.h
index 3a5670d92..d5635a07e 100644
--- a/include/sway/server.h
+++ b/include/sway/server.h
@@ -90,6 +90,8 @@ struct sway_server {
 	struct wlr_xdg_activation_v1 *xdg_activation_v1;
 	struct wl_listener xdg_activation_v1_request_activate;
 
+	struct wlr_surface_suspension_manager_v1 *surface_suspension_manager_v1;
+
 	// The timeout for transactions, after which a transaction is applied
 	// regardless of readiness.
 	size_t txn_timeout_ms;
diff --git a/sway/server.c b/sway/server.c
index 2e5ab1045..2279b1f0a 100644
--- a/sway/server.c
+++ b/sway/server.c
@@ -22,6 +22,7 @@
 #include <wlr/types/wlr_relative_pointer_v1.h>
 #include <wlr/types/wlr_screencopy_v1.h>
 #include <wlr/types/wlr_server_decoration.h>
+#include <wlr/types/wlr_surface_suspension_v1.h>
 #include <wlr/types/wlr_tablet_v2.h>
 #include <wlr/types/wlr_viewporter.h>
 #include <wlr/types/wlr_xcursor_manager.h>
@@ -166,6 +167,9 @@ bool server_init(struct sway_server *server) {
 	wl_signal_add(&server->xdg_activation_v1->events.request_activate,
 		&server->xdg_activation_v1_request_activate);
 
+	server->surface_suspension_manager_v1 =
+		wlr_surface_suspension_manager_v1_create(server->wl_display);
+
 	// Avoid using "wayland-0" as display socket
 	char name_candidate[16];
 	for (int i = 1; i <= 32; ++i) {
diff --git a/sway/tree/workspace.c b/sway/tree/workspace.c
index c0da9c934..3bca3ccc8 100644
--- a/sway/tree/workspace.c
+++ b/sway/tree/workspace.c
@@ -5,6 +5,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <strings.h>
+#include <wlr/types/wlr_surface_suspension_v1.h>
 #include "stringop.h"
 #include "sway/input/input-manager.h"
 #include "sway/input/cursor.h"
@@ -561,6 +562,23 @@ struct sway_workspace *workspace_output_prev(
 	return workspace_output_prev_next_impl(current->output, -1, create);
 }
 
+static void set_surface_suspended_iterator(struct wlr_surface *surface,
+		int x, int y, void *data) {
+	bool *suspended = data;
+	wlr_surface_suspension_manager_v1_set_suspended(
+		server.surface_suspension_manager_v1, surface, *suspended);
+}
+
+static void set_container_suspended(struct sway_container *container,
+		void *data) {
+	if (!container->view || container_is_floating(container)) {
+		return;
+	}
+
+	view_for_each_surface(container->view,
+		set_surface_suspended_iterator, data);
+}
+
 bool workspace_switch(struct sway_workspace *workspace,
 		bool no_auto_back_and_forth) {
 	struct sway_seat *seat = input_manager_current_seat();
@@ -589,6 +607,15 @@ bool workspace_switch(struct sway_workspace *workspace,
 	}
 	seat_set_focus(seat, next);
 	arrange_workspace(workspace);
+
+	if (active_ws) {
+		bool suspended = true;
+		workspace_for_each_container(active_ws, set_container_suspended, &suspended);
+	}
+
+	bool suspended = false;
+	workspace_for_each_container(workspace, set_container_suspended, &suspended);
+
 	return true;
 }