foreign-toplevel: support fullscreen state and request

include/wlr/types/wlr_foreign_toplevel_management_v1.h

@@ -28,9 +28,10 @@ struct wlr_foreign_toplevel_manager_v1 {
 };
 
 enum wlr_foreign_toplevel_handle_v1_state {
-	WLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_MAXIMIZED = 1,
+	WLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_MAXIMIZED = (1 << 0),
-	WLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_MINIMIZED = 2,
+	WLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_MINIMIZED = (1 << 1),
-	WLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_ACTIVATED = 4,
+	WLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_ACTIVATED = (1 << 2),
+	WLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_FULLSCREEN = (1 << 3),
 };
 
 struct wlr_foreign_toplevel_handle_v1_output {
@@ -59,6 +60,8 @@ struct wlr_foreign_toplevel_handle_v1 {
 		struct wl_signal request_minimize;
 		//wlr_foreign_toplevel_handle_v1_activated_event
 		struct wl_signal request_activate;
+		//wlr_foreign_toplevel_handle_v1_fullscreen_event
+		struct wl_signal request_fullscreen;
 		struct wl_signal request_close;
 
 		//wlr_foreign_toplevel_handle_v1_set_rectangle_event
@@ -84,6 +87,12 @@ struct wlr_foreign_toplevel_handle_v1_activated_event {
 	struct wlr_seat *seat;
 };
 
+struct wlr_foreign_toplevel_handle_v1_fullscreen_event {
+	struct wlr_foreign_toplevel_handle_v1 *toplevel;
+	bool fullscreen;
+	struct wlr_output *output;
+};
+
 struct wlr_foreign_toplevel_handle_v1_set_rectangle_event {
 	struct wlr_foreign_toplevel_handle_v1 *toplevel;
 	struct wlr_surface *surface;
@@ -116,5 +125,7 @@ void wlr_foreign_toplevel_handle_v1_set_minimized(
 	struct wlr_foreign_toplevel_handle_v1 *toplevel, bool minimized);
 void wlr_foreign_toplevel_handle_v1_set_activated(
 	struct wlr_foreign_toplevel_handle_v1 *toplevel, bool activated);
+void wlr_foreign_toplevel_handle_v1_set_fullscreen(
+	struct wlr_foreign_toplevel_handle_v1* toplevel, bool fullscreen);
 
 #endif

protocol/wlr-foreign-toplevel-management-unstable-v1.xml

@@ -25,7 +25,7 @@
     THIS SOFTWARE.
   </copyright>
 
-  <interface name="zwlr_foreign_toplevel_manager_v1" version="1">
+  <interface name="zwlr_foreign_toplevel_manager_v1" version="2">
     <description summary="list and control opened apps">
       The purpose of this protocol is to enable the creation of taskbars
       and docks by providing them with a list of opened applications and
@@ -68,7 +68,7 @@
     </event>
   </interface>
 
-  <interface name="zwlr_foreign_toplevel_handle_v1" version="1">
+  <interface name="zwlr_foreign_toplevel_handle_v1" version="2">
     <description summary="an opened toplevel">
       A zwlr_foreign_toplevel_handle_v1 object represents an opened toplevel
       window. Each app may have multiple opened toplevels.
@@ -153,6 +153,7 @@
       <entry name="maximized"  value="0" summary="the toplevel is maximized"/>
       <entry name="minimized"  value="1" summary="the toplevel is minimized"/>
       <entry name="activated"  value="2" summary="the toplevel is active"/>
+      <entry name="fullscreen" value="3" summary="the toplevel is fullscreen" since="2"/>
     </enum>
 
     <event name="state">
@@ -231,5 +232,28 @@
         destruction of the object.
       </description>
     </request>
+
+    <!-- Version 2 additions -->
+
+    <request name="set_fullscreen" since="2">
+      <description summary="request that the toplevel be fullscreened">
+        Requests that the toplevel be fullscreened on the given output. If the
+        fullscreen state and/or the outputs the toplevel is visible on actually
+        change, this will be indicated by the state and output_enter/leave
+        events.
+
+        The output parameter is only a hint to the compositor. Also, if output
+        is NULL, the compositor should decide which output the toplevel will be
+        fullscreened on, if at all.
+      </description>
+      <arg name="output" type="object" interface="wl_output" allow-null="true"/>
+    </request>
+
+    <request name="unset_fullscreen" since="2">
+      <description summary="request that the toplevel be unfullscreened">
+        Requests that the toplevel be unfullscreened. If the fullscreen state
+        actually changes, this will be indicated by the state event.
+      </description>
+    </request>
   </interface>
 </protocol>

types/wlr_foreign_toplevel_management_v1.c

@@ -9,7 +9,7 @@
 #include "util/signal.h"
 #include "wlr-foreign-toplevel-management-unstable-v1-protocol.h"
 
-#define FOREIGN_TOPLEVEL_MANAGEMENT_V1_VERSION 1
+#define FOREIGN_TOPLEVEL_MANAGEMENT_V1_VERSION 2
 
 static const struct zwlr_foreign_toplevel_handle_v1_interface toplevel_handle_impl;
 
@@ -70,6 +70,36 @@ static void foreign_toplevel_handle_unset_minimized(struct wl_client *client,
 	toplevel_send_minimized_event(resource, false);
 }
 
+static void toplevel_send_fullscreen_event(struct wl_resource *resource,
+		bool state, struct wl_resource *output_resource) {
+	struct wlr_foreign_toplevel_handle_v1 *toplevel =
+		toplevel_handle_from_resource(resource);
+	if (!toplevel) {
+		return;
+	}
+
+	struct wlr_output *output = NULL;
+	if (output_resource) {
+		output = wlr_output_from_resource(output_resource);
+	}
+	struct wlr_foreign_toplevel_handle_v1_fullscreen_event event = {
+		.toplevel = toplevel,
+		.fullscreen = state,
+		.output = output,
+	};
+	wlr_signal_emit_safe(&toplevel->events.request_fullscreen, &event);
+}
+
+static void foreign_toplevel_handle_set_fullscreen(struct wl_client *client,
+		struct wl_resource *resource, struct wl_resource *output) {
+	toplevel_send_fullscreen_event(resource, true, output);
+}
+
+static void foreign_toplevel_handle_unset_fullscreen(struct wl_client *client,
+		struct wl_resource *resource) {
+	toplevel_send_fullscreen_event(resource, false, NULL);
+}
+
 static void foreign_toplevel_handle_activate(struct wl_client *client,
 		struct wl_resource *resource, struct wl_resource *seat) {
 	struct wlr_foreign_toplevel_handle_v1 *toplevel =
@@ -136,7 +166,9 @@ static const struct zwlr_foreign_toplevel_handle_v1_interface toplevel_handle_im
 	.activate = foreign_toplevel_handle_activate,
 	.close = foreign_toplevel_handle_close,
 	.set_rectangle = foreign_toplevel_handle_set_rectangle,
-	.destroy = foreign_toplevel_handle_destroy
+	.destroy = foreign_toplevel_handle_destroy,
+	.set_fullscreen = foreign_toplevel_handle_set_fullscreen,
+	.unset_fullscreen = foreign_toplevel_handle_unset_fullscreen,
 };
 
 static void toplevel_idle_send_done(void *data) {
@@ -299,6 +331,13 @@ static bool fill_array_from_toplevel_state(struct wl_array *array,
 		}
 		*index = ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_ACTIVATED;
 	}
+	if (state & WLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_FULLSCREEN) {
+		uint32_t *index = wl_array_add(array, sizeof(uint32_t));
+		if (index == NULL) {
+			return false;
+		}
+		*index = ZWLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_FULLSCREEN;
+	}
 
 	return true;
 }
@@ -356,6 +395,16 @@ void wlr_foreign_toplevel_handle_v1_set_activated(
 	toplevel_send_state(toplevel);
 }
 
+void wlr_foreign_toplevel_handle_v1_set_fullscreen(
+		struct wlr_foreign_toplevel_handle_v1 * toplevel, bool fullscreen) {
+	if (fullscreen) {
+		toplevel->state |= WLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_FULLSCREEN;
+	} else {
+		toplevel->state &= ~WLR_FOREIGN_TOPLEVEL_HANDLE_V1_STATE_FULLSCREEN;
+	}
+	toplevel_send_state(toplevel);
+}
+
 void wlr_foreign_toplevel_handle_v1_destroy(
 		struct wlr_foreign_toplevel_handle_v1 *toplevel) {
 	if (!toplevel) {
@@ -430,6 +479,7 @@ wlr_foreign_toplevel_handle_v1_create(
 	wl_signal_init(&toplevel->events.request_maximize);
 	wl_signal_init(&toplevel->events.request_minimize);
 	wl_signal_init(&toplevel->events.request_activate);
+	wl_signal_init(&toplevel->events.request_fullscreen);
 	wl_signal_init(&toplevel->events.request_close);
 	wl_signal_init(&toplevel->events.set_rectangle);
 	wl_signal_init(&toplevel->events.destroy);