From 80998cdf57756fe46d55921c98a745aff4848215 Mon Sep 17 00:00:00 2001
From: emersion <contact@emersion.fr>
Date: Mon, 20 Nov 2017 17:58:26 +0100
Subject: [PATCH] Add support for fullscreen xwayland views

---
 include/rootston/view.h |  1 +
 rootston/xwayland.c     | 21 +++++++++++++++++++++
 types/wlr_output.c      |  4 ++++
 3 files changed, 26 insertions(+)

diff --git a/include/rootston/view.h b/include/rootston/view.h
index e1397b89..77bbfbec 100644
--- a/include/rootston/view.h
+++ b/include/rootston/view.h
@@ -38,6 +38,7 @@ struct roots_xwayland_surface {
 	struct wl_listener request_move;
 	struct wl_listener request_resize;
 	struct wl_listener request_maximize;
+	struct wl_listener request_fullscreen;
 	struct wl_listener map_notify;
 	struct wl_listener unmap_notify;
 };
diff --git a/rootston/xwayland.c b/rootston/xwayland.c
index c92c424b..5e27afed 100644
--- a/rootston/xwayland.c
+++ b/rootston/xwayland.c
@@ -92,6 +92,13 @@ static void maximize(struct roots_view *view, bool maximized) {
 		view->xwayland_surface, maximized);
 }
 
+static void set_fullscreen(struct roots_view *view, bool fullscreen) {
+	assert(view->type == ROOTS_XWAYLAND_VIEW);
+
+	wlr_xwayland_surface_set_fullscreen(view->desktop->xwayland,
+		view->xwayland_surface, fullscreen);
+}
+
 static void handle_destroy(struct wl_listener *listener, void *data) {
 	struct roots_xwayland_surface *roots_surface =
 		wl_container_of(listener, roots_surface, destroy);
@@ -170,6 +177,16 @@ static void handle_request_maximize(struct wl_listener *listener, void *data) {
 	view_maximize(view, maximized);
 }
 
+static void handle_request_fullscreen(struct wl_listener *listener,
+		void *data) {
+	struct roots_xwayland_surface *roots_surface =
+		wl_container_of(listener, roots_surface, request_fullscreen);
+	struct roots_view *view = roots_surface->view;
+	struct wlr_xwayland_surface *xwayland_surface = view->xwayland_surface;
+
+	view_set_fullscreen(view, xwayland_surface->fullscreen, NULL);
+}
+
 static void handle_map_notify(struct wl_listener *listener, void *data) {
 	struct roots_xwayland_surface *roots_surface =
 		wl_container_of(listener, roots_surface, map_notify);
@@ -223,6 +240,9 @@ void handle_xwayland_surface(struct wl_listener *listener, void *data) {
 	roots_surface->request_maximize.notify = handle_request_maximize;
 	wl_signal_add(&surface->events.request_maximize,
 		&roots_surface->request_maximize);
+	roots_surface->request_fullscreen.notify = handle_request_fullscreen;
+	wl_signal_add(&surface->events.request_fullscreen,
+		&roots_surface->request_fullscreen);
 
 	struct roots_view *view = calloc(1, sizeof(struct roots_view));
 	if (view == NULL) {
@@ -240,6 +260,7 @@ void handle_xwayland_surface(struct wl_listener *listener, void *data) {
 	view->move = move;
 	view->move_resize = move_resize;
 	view->maximize = maximize;
+	view->set_fullscreen = set_fullscreen;
 	view->close = close;
 	roots_surface->view = view;
 	view_init(view, desktop);
diff --git a/types/wlr_output.c b/types/wlr_output.c
index 5a8baa3d..3ef91179 100644
--- a/types/wlr_output.c
+++ b/types/wlr_output.c
@@ -382,6 +382,10 @@ static void output_fullscreen_surface_handle_destroy(
 void wlr_output_set_fullscreen_surface(struct wlr_output *output,
 		struct wlr_surface *surface) {
 	// TODO: hardware fullscreen
+	if (output->fullscreen_surface == surface) {
+		return;
+	}
+
 	output_fullscreen_surface_reset(output);
 
 	output->fullscreen_surface = surface;