refactor code

- Idle notify
- Idle inhibit

.gitignore

@@ -139,7 +139,5 @@ m4/lt~obsolete.m4
 # can automatically generate from config.status script
 # (which is called by configure script))
 # Makefile
-xdg-shell-protocol.*
-diyac
-.vscode
-wlr-layer-shell-unstable-v1-protocol*
+build
+.vscode

Makefile

@@ -1,53 +0,0 @@
-WAYLAND_PROTOCOLS=$(shell pkg-config --variable=pkgdatadir wayland-protocols)
-WAYLAND_SCANNER=$(shell pkg-config --variable=wayland_scanner wayland-scanner)
-LIBS=\
-	 $(shell pkg-config --cflags --libs wlroots) \
-	 $(shell pkg-config --cflags --libs wayland-server) \
-	 $(shell pkg-config --cflags --libs xkbcommon)
-
-OBJS=\
-	diyac.c \
-	cursor.c \
-	output.c \
-	seat.c \
-	node.c \
-	view.c \
-	foreign.c \
-	xdg.c \
-	xdg-shell-protocol.c \
-	layer.c \
-	session.c \
-	wlr-layer-shell-unstable-v1-protocol.c
-
-# wayland-scanner is a tool which generates C headers and rigging for Wayland
-# protocols, which are specified in XML. wlroots requires you to rig these up
-# to your build system yourself and provide them in the include path.
-xdg-shell-protocol.h:
-	$(WAYLAND_SCANNER) server-header \
-		$(WAYLAND_PROTOCOLS)/stable/xdg-shell/xdg-shell.xml $@
-
-xdg-shell-protocol.c: xdg-shell-protocol.h
-	$(WAYLAND_SCANNER) private-code \
-		$(WAYLAND_PROTOCOLS)/stable/xdg-shell/xdg-shell.xml $@
-
-wlr-layer-shell-unstable-v1-protocol.c: wlr-layer-shell-unstable-v1-protocol.h
-	$(WAYLAND_SCANNER) private-code \
-		protocol/wlr-layer-shell-unstable-v1.xml $@
-
-wlr-layer-shell-unstable-v1-protocol.h:
-	$(WAYLAND_SCANNER) server-header \
-		protocol/wlr-layer-shell-unstable-v1.xml $@
-
-diyac: $(OBJS)
-	echo "Object is $(OBJS)"
-	$(CC) $(CFLAGS) \
-		-g -Werror -I. \
-		-DWLR_USE_UNSTABLE \
-		-o $@ $(OBJS) \
-		$(LIBS)
-
-clean:
-	rm -f diyac xdg-shell-protocol.* wlr-layer-shell-unstable-v1-protocol.*
-
-.DEFAULT_GOAL=diyac
-.PHONY: clean

README.md

@@ -1,2 +1,3 @@
 # diyac
 
+Simple Wayland compositor used mainly by diya-session manager and diya shell

cursor.c

@@ -5,6 +5,7 @@
 #include "view.h"
 #include "seat.h"
 #include "node.h"
+#include "idle.h"
 
 void diyac_cursor_focus(struct diyac_server *server)
 {
@@ -13,7 +14,7 @@ void diyac_cursor_focus(struct diyac_server *server)
     struct diyac_node_descriptor *desc = diyac_node_at(server,
                                                        server->seat.cursor->x, server->seat.cursor->y, &surface, &sx, &sy);
     struct diyac_layer_surface *layer;
-    struct diyac_view *root = NULL;
+    // struct diyac_view *root = NULL;
     if (!desc)
     {
         return;
@@ -55,6 +56,7 @@ void diyac_reset_cursor_mode(struct diyac_server *server)
 
 static void process_cursor_move(struct diyac_server *server, uint32_t time)
 {
+    (void) time;
     struct diyac_view *toplevel = server->grabbed_view;
     /* Move the grabbed toplevel to the new position. */
     if(!toplevel->output)
@@ -84,6 +86,7 @@ static void process_cursor_move(struct diyac_server *server, uint32_t time)
 
 static void process_cursor_resize(struct diyac_server *server, uint32_t time)
 {
+    (void) time;
     /*
      * Resizing the grabbed toplevel can be a little bit complicated, because we
      * could be resizing from any corner or edge. This not only resizes the
@@ -214,6 +217,7 @@ static void server_cursor_motion(struct wl_listener *listener, void *data)
     struct diyac_seat *seat =
         wl_container_of(listener, seat, cursor_motion);
     struct wlr_pointer_motion_event *event = data;
+    diya_idle_manager_notify_activity(seat->wlr_seat);
     /* The cursor doesn't move unless we tell it to. The cursor automatically
      * handles constraining the motion to the output layout, as well as any
      * special configuration applied for the specific input device which
@@ -235,6 +239,7 @@ static void server_cursor_motion_absolute(
      * emits these events. */
     struct diyac_seat *seat =
         wl_container_of(listener, seat, cursor_motion_absolute);
+    diya_idle_manager_notify_activity(seat->wlr_seat);
     struct wlr_pointer_motion_absolute_event *event = data;
     wlr_cursor_warp_absolute(seat->cursor, &event->pointer->base, event->x,
                              event->y);
@@ -248,11 +253,12 @@ static void server_cursor_button(struct wl_listener *listener, void *data)
     struct diyac_seat *seat =
         wl_container_of(listener, seat, cursor_button);
     struct wlr_pointer_button_event *event = data;
+    diya_idle_manager_notify_activity(seat->wlr_seat);
     /* Notify the client with pointer focus that a button press has occurred */
     wlr_seat_pointer_notify_button(seat->wlr_seat,
                                    event->time_msec, event->button, event->state);
 
-    if (event->state == WLR_BUTTON_RELEASED)
+    if (event->state == WL_POINTER_BUTTON_STATE_RELEASED)
     {
         /* If you released any buttons, we exit interactive move/resize mode. */
         diyac_reset_cursor_mode(seat->server);
@@ -269,15 +275,17 @@ static void server_cursor_axis(struct wl_listener *listener, void *data)
      * for example when you move the scroll wheel. */
     struct diyac_seat *seat =
         wl_container_of(listener, seat, cursor_axis);
+    diya_idle_manager_notify_activity(seat->wlr_seat);
     struct wlr_pointer_axis_event *event = data;
     /* Notify the client with pointer focus of the axis event. */
     wlr_seat_pointer_notify_axis(seat->wlr_seat,
                                  event->time_msec, event->orientation, event->delta,
-                                 event->delta_discrete, event->source);
+                                 event->delta_discrete, event->source, event->delta);
 }
 
 static void server_cursor_frame(struct wl_listener *listener, void *data)
 {
+    (void) data;
     /* This event is forwarded by the cursor when a pointer emits an frame
      * event. Frame events are sent after regular pointer events to group
      * multiple events together. For instance, two axis events may happen at the

diyac.c

@@ -8,20 +8,31 @@
 #include <errno.h>
 #include <string.h>
 #include <signal.h>
+#include <wlr/types/wlr_screencopy_v1.h>
+#include <wlr/types/wlr_export_dmabuf_v1.h>
+#include <wlr/types/wlr_data_control_v1.h>
+#include <wlr/types/wlr_single_pixel_buffer_v1.h>
 #include "output.h"
 #include "xdg.h"
 #include "cursor.h"
 #include "seat.h"
 #include "layer.h"
 #include "session.h"
+#include "idle.h"
 
 #define PROC_MON_TO 100
 
 void help()
 {
+    printf("diyac - a simple Wayland compositor\n");
     printf("Usage: diyac [-x] [startup command]\n");
     printf("Options:\n");
     printf("  -x  exit with the session\n");
+    printf("  -v  increase log level\n");
+    printf("  -h  show this help message\n");
+#ifdef __COMPOSITOR_VERSION__
+    printf("Version: %s\n", __COMPOSITOR_VERSION__);
+#endif
 }
 
 /**
@@ -54,15 +65,20 @@ static int session_monitor(void *data)
 
 int main(int argc, char *argv[])
 {
-    wlr_log_init(WLR_INFO, NULL);
     char *startup_cmd = NULL;
     int exit_with_session = 0;
-
+    int log_level = WLR_ERROR;
     int c;
-    while ((c = getopt(argc, argv, "xh")) != -1)
+    while ((c = getopt(argc, argv, "xvh")) != -1)
     {
         switch (c)
         {
+        case 'v':
+            if (log_level < WLR_DEBUG)
+            {
+                log_level++;
+            }
+            break;
         case 'x':
             exit_with_session = 1;
             break;
@@ -78,7 +94,7 @@ int main(int argc, char *argv[])
     }
     if (optind < argc)
     {
-        if(optind != argc - 1)
+        if (optind != argc - 1)
         {
             help();
             return 1;
@@ -86,6 +102,7 @@ int main(int argc, char *argv[])
         // the last argument is the startup command
         startup_cmd = argv[optind];
     }
+    wlr_log_init(log_level, NULL);
     struct diyac_server server = {0};
     /* The Wayland display is managed by libwayland. It handles accepting
      * clients from the Unix socket, manging Wayland globals, and so on. */
@@ -95,7 +112,7 @@ int main(int argc, char *argv[])
      * output hardware. The autocreate option will choose the most suitable
      * backend based on the current environment, such as opening an X11 window
      * if an X11 server is running. */
-    server.backend = wlr_backend_autocreate(server.wl_display, NULL);
+    server.backend = wlr_backend_autocreate(server.wl_event_loop, NULL);
     if (server.backend == NULL)
     {
         wlr_log(WLR_ERROR, "failed to create wlr_backend");
@@ -149,15 +166,6 @@ int main(int argc, char *argv[])
      */
     wlr_primary_selection_v1_device_manager_create(server.wl_display);
 
-    /* Creates an output layout, which a wlroots utility for working with an
-     * arrangement of screens in a physical layout. */
-    server.output_layout = wlr_output_layout_create();
-
-    /* Configure a listener to be notified when new outputs are available on the
-     * backend. */
-    wl_list_init(&server.outputs);
-    server.new_output.notify = diyac_server_new_output;
-    wl_signal_add(&server.backend->events.new_output, &server.new_output);
 
     /* Create a scene graph. This is a wlroots abstraction that handles all
      * rendering and damage tracking. All the compositor author needs to do
@@ -166,23 +174,29 @@ int main(int argc, char *argv[])
      * necessary.
      */
     server.scene = wlr_scene_create();
-    server.scene_layout = wlr_scene_attach_output_layout(server.scene, server.output_layout);
-    wlr_fractional_scale_manager_v1_create(server.wl_display,1);
+    diyac_output_init(&server);
+    wlr_export_dmabuf_manager_v1_create(server.wl_display);
+    wlr_data_control_manager_v1_create(server.wl_display);
+    wlr_screencopy_manager_v1_create(server.wl_display);
+    wlr_single_pixel_buffer_manager_v1_create(server.wl_display);
+    wlr_fractional_scale_manager_v1_create(server.wl_display, 1);
+    diya_init_idle_manager(server.wl_display);
+
     /* Set up xdg-shell version 6 The xdg-shell is a Wayland protocol which is
      * used for application windows. For more detail on shells, refer to
      * https://drewdevault.com/2018/07/29/Wayland-shells.html.
      */
     wl_list_init(&server.views);
     /**
-    * TODO: free these tree when finish
-    */
+     * TODO: free these tree when finish
+     */
     server.view_tree = wlr_scene_tree_create(&server.scene->tree);
     server.xdg_popup_tree = wlr_scene_tree_create(&server.scene->tree);
 
     server.xdg_shell = wlr_xdg_shell_create(server.wl_display, 6);
-    server.new_xdg_surface.notify = diyac_new_xdg_surface;
-    wl_signal_add(&server.xdg_shell->events.new_surface,
-                  &server.new_xdg_surface);
+    server.new_xdg_toplevel.notify = diyac_new_xdg_toplevel;
+    wl_signal_add(&server.xdg_shell->events.new_toplevel,
+                  &server.new_xdg_toplevel);
 
     server.layer_shell = wlr_layer_shell_v1_create(server.wl_display, 4);
     server.new_layer_surface.notify = diyac_new_layer_surface;
@@ -239,7 +253,7 @@ int main(int argc, char *argv[])
     wlr_log(WLR_INFO, "Running Wayland compositor on WAYLAND_DISPLAY=%s",
             socket);
     server.proc_mon = NULL;
-    if( startup_cmd && exit_with_session)
+    if (startup_cmd && exit_with_session)
     {
         if (server.session_pid == -1)
         {
@@ -259,10 +273,17 @@ int main(int argc, char *argv[])
 
     /* Once wl_display_run returns, we destroy all clients then shut down the
      * server. */
-    if(server.proc_mon)
+    if (server.proc_mon)
     {
         wl_event_source_remove(server.proc_mon);
     }
+    wl_list_remove(&server.new_xdg_toplevel.link);
+    wl_list_remove(&server.new_layer_surface.link);
+    wl_list_remove(&server.new_output.link);
+    wl_list_remove(&server.output_power_manager_set_mode.link);
+    wl_list_remove(&server.output_manager_apply.link);
+    wl_list_remove(&server.output_manager_test.link);
+    wl_list_remove(&server.output_layout_change.link);
     wl_display_destroy_clients(server.wl_display);
     // wlr_scene_node_destroy(&server.scene->tree.node);
     wlr_xcursor_manager_destroy(server.seat.cursor_mgr);
@@ -274,5 +295,5 @@ int main(int argc, char *argv[])
 /**
  * @brief TODO
  * reload configuration (keymap, etc.) when sighub is received
- * 
+ *
  */

diyac.h

@@ -18,6 +18,8 @@
 #include <wlr/types/wlr_foreign_toplevel_management_v1.h>
 #include <wlr/types/wlr_session_lock_v1.h>
 #include <wlr/types/wlr_virtual_keyboard_v1.h>
+#include <wlr/types/wlr_output_power_management_v1.h>
+#include <wlr/types/wlr_output_management_v1.h>
 
 #define LAYER_TREE_SZ 4
 
@@ -110,13 +112,13 @@ struct diyac_node_descriptor
 struct diyac_session_lock
 {
     bool abandoned;
-    struct wlr_surface * focused;
+    struct wlr_surface *focused;
 
-    struct wlr_session_lock_v1* wlr_session_lock; 
+    struct wlr_session_lock_v1 *wlr_session_lock;
     struct wl_listener new_surface;
     struct wl_listener unlock;
     struct wl_listener destroy;
-    //struct wl_listener new_output;
+    // struct wl_listener new_output;
 };
 
 struct diyac_server
@@ -131,10 +133,12 @@ struct diyac_server
 
     struct wlr_xdg_shell *xdg_shell;
     struct wlr_layer_shell_v1 *layer_shell;
-    struct wl_listener new_xdg_surface;
+
+    struct wl_listener new_xdg_toplevel;
+
     struct wl_listener new_layer_surface;
     struct wl_list views;
-    struct diyac_view * active_view;
+    struct diyac_view *active_view;
     struct wlr_foreign_toplevel_manager_v1 *foreign_toplevel_manager;
     /*
      * Popups need to be rendered above always-on-top views, so we reparent
@@ -154,9 +158,17 @@ struct diyac_server
     struct wl_list outputs;
     struct wl_listener new_output;
 
-    struct diyac_session_lock * lock;
+    struct wlr_output_power_manager_v1 *output_power_manager;
+    struct wl_listener output_power_manager_set_mode;
 
-    struct wl_event_source* proc_mon;
+    struct wlr_output_manager_v1 *output_manager;
+    struct wl_listener output_manager_test;
+    struct wl_listener output_manager_apply;
+    struct wl_listener output_layout_change;
+
+    struct diyac_session_lock *lock;
+
+    struct wl_event_source *proc_mon;
     pid_t session_pid;
 };
 
@@ -179,7 +191,7 @@ struct diyac_output_lock_handle
     struct wlr_scene_rect *background;
 
     struct wlr_session_lock_surface_v1 *surface;
-    struct diyac_output * output;
+    struct diyac_output *output;
     struct wl_listener surface_destroy;
     struct wl_listener surface_map;
 
@@ -195,13 +207,15 @@ struct diyac_output
     struct wl_listener request_state;
     struct wl_listener destroy;
     struct wlr_box usable_area;
+    struct wlr_output_state pending_state;
+    struct wlr_scene_output* scene_output;
 
     // layer output
     struct diyac_output_scenes scenes;
     // alias to diyac_output_scenes elements
     struct wlr_scene_tree *layer_tree[LAYER_TREE_SZ];
     // lock handle
-    struct diyac_output_lock_handle * lock_handle;
+    struct diyac_output_lock_handle *lock_handle;
 };
 
 struct foreign_toplevel
@@ -225,7 +239,7 @@ struct diyac_view
     struct diyac_view_state state;
     struct diyac_view_state requested;
     uint32_t configuration_serial;
-    struct wl_event_source * configuration_timeout;
+    struct wl_event_source *configuration_timeout;
     /*
      * Geometry of the wlr_surface contained within the view, as
      * currently displayed. Should be kept in sync with the
@@ -244,7 +258,6 @@ struct diyac_view
     struct wl_listener request_minimize;
     struct wl_listener request_maximize;
     struct wl_listener request_fullscreen;
-
     struct wl_listener set_app_id;
     struct wl_listener new_popup;
     struct wl_listener set_title;

foreign.c

@@ -29,6 +29,7 @@ static void handle_request_fullscreen(struct wl_listener *listener, void *data)
 
 static void handle_request_activate(struct wl_listener *listener, void *data)
 {
+    (void) data;
     struct diyac_view *view = wl_container_of(listener, view, toplevel.activate);
     // struct wlr_foreign_toplevel_handle_v1_activated_event *event = data;
     /* In a multi-seat world we would select seat based on event->seat here. */
@@ -39,6 +40,7 @@ static void handle_request_activate(struct wl_listener *listener, void *data)
 static void
 handle_request_close(struct wl_listener *listener, void *data)
 {
+    (void) data;
     struct diyac_view *view = wl_container_of(listener, view, toplevel.close);
     wlr_xdg_toplevel_send_close(view->xdg_toplevel);
 }
@@ -46,6 +48,7 @@ handle_request_close(struct wl_listener *listener, void *data)
 static void
 handle_destroy(struct wl_listener *listener, void *data)
 {
+    (void) data;
     struct diyac_view *view = wl_container_of(listener, view, toplevel.destroy);
     struct foreign_toplevel *toplevel = &view->toplevel;
     wl_list_remove(&toplevel->maximize.link);

idle.c

@@ -0,0 +1,77 @@
+#include "diyac.h"
+#include "idle.h"
+#include <stdlib.h>
+#include <wlr/types/wlr_idle_notify_v1.h>
+#include <wlr/types/wlr_idle_inhibit_v1.h>
+
+struct diya_idle_inhibitor
+{
+    struct wlr_idle_inhibitor_v1 *wlr_inhibitor;
+    struct wl_listener on_inhibitor_destroy;
+};
+
+struct diya_idle_mngr
+{
+    struct wlr_idle_inhibit_manager_v1 *wlr_inhibitor_mngr;
+    struct wl_listener on_new_inhibitor;
+
+    struct wlr_idle_notifier_v1 *wlr_idle_notifier;
+    // struct wl_listener on_display_destroy;
+};
+
+static struct diya_idle_mngr g_idle_mngr;
+
+static void handle_idle_inhibitor_destroy(struct wl_listener *listener, void *data)
+{
+    (void) data;
+    struct diya_idle_inhibitor *inhibitor = wl_container_of(listener, inhibitor, on_inhibitor_destroy);
+    
+    if (g_idle_mngr.wlr_idle_notifier) {
+        bool still_inhibited = wl_list_length(&g_idle_mngr.wlr_inhibitor_mngr->inhibitors) > 1;
+        wlr_idle_notifier_v1_set_inhibited(g_idle_mngr.wlr_idle_notifier, still_inhibited);
+    }
+
+    wl_list_remove(&inhibitor->on_inhibitor_destroy.link);
+    free(inhibitor);
+}
+
+/*
+static void handle_display_destroy(struct wl_listener *listener, void *data)
+{
+    (void) data;
+    (void) listener;
+    wl_list_remove(&g_idle_mngr.on_display_destroy.link);
+    g_idle_mngr.wlr_idle_notifier = NULL;
+}
+*/
+
+static void handle_idle_inhibitor_new(struct wl_listener *listener, void *data)
+{
+    (void) listener;
+    struct wlr_idle_inhibitor_v1 *wlr_inhibitor = data;
+    struct diya_idle_inhibitor *inhibitor = malloc(sizeof(struct diya_idle_inhibitor));
+    inhibitor->wlr_inhibitor = wlr_inhibitor;
+    inhibitor->on_inhibitor_destroy.notify = handle_idle_inhibitor_destroy;
+    wl_signal_add(&wlr_inhibitor->events.destroy, &inhibitor->on_inhibitor_destroy);
+
+    wlr_idle_notifier_v1_set_inhibited(g_idle_mngr.wlr_idle_notifier, true);
+}
+
+void diya_init_idle_manager(struct wl_display *display)
+{
+    g_idle_mngr.wlr_idle_notifier = wlr_idle_notifier_v1_create(display);
+    g_idle_mngr.wlr_inhibitor_mngr = wlr_idle_inhibit_v1_create(display);
+
+    g_idle_mngr.on_new_inhibitor.notify = handle_idle_inhibitor_new;
+    wl_signal_add(&g_idle_mngr.wlr_inhibitor_mngr->events.new_inhibitor,&g_idle_mngr.on_new_inhibitor);
+
+    //g_idle_mngr.on_display_destroy.notify = handle_display_destroy;
+    //wl_display_add_destroy_listener(display, &g_idle_mngr.on_display_destroy);
+}
+
+void diya_idle_manager_notify_activity(struct wlr_seat *seat)
+{
+    if (g_idle_mngr.wlr_idle_notifier) {
+        wlr_idle_notifier_v1_notify_activity(g_idle_mngr.wlr_idle_notifier, seat);
+    }
+}

idle.h

@@ -0,0 +1,9 @@
+#ifndef DIYAC_IDLE_H
+#define DIYAC_IDLE_H
+
+struct wl_display;
+struct wlr_seat;
+
+void diya_init_idle_manager(struct wl_display *display);
+void diya_idle_manager_notify_activity(struct wlr_seat *seat);
+#endif

layer.c

@@ -53,6 +53,7 @@ static void process_keyboard_interactivity(struct diyac_layer_surface *layer)
 }
 static void layer_surface_commit(struct wl_listener *listener, void *data)
 {
+    (void) data;
     struct diyac_layer_surface *layer =
         wl_container_of(listener, layer, surface_commit);
     struct wlr_layer_surface_v1 *layer_surface =
@@ -94,6 +95,7 @@ static void layer_surface_commit(struct wl_listener *listener, void *data)
 }
 static void layer_surface_unmap(struct wl_listener *listener, void *data)
 {
+    (void) data;
     struct diyac_layer_surface *layer = wl_container_of(listener, layer, unmap);
     struct wlr_layer_surface_v1 *layer_surface =
         layer->scene_layer_surface->layer_surface;
@@ -109,6 +111,7 @@ static void layer_surface_unmap(struct wl_listener *listener, void *data)
 
 static void layer_surface_map(struct wl_listener *listener, void *data)
 {
+    (void) data;
     struct diyac_layer_surface *layer = wl_container_of(listener, layer, map);
     struct wlr_output *wlr_output =
         layer->scene_layer_surface->layer_surface->output;
@@ -127,6 +130,7 @@ static void layer_surface_map(struct wl_listener *listener, void *data)
 }
 static void layer_surface_node_destroy(struct wl_listener *listener, void *data)
 {
+    (void) data;
     struct diyac_layer_surface *layer =
         wl_container_of(listener, layer, node_destroy);
 
@@ -142,6 +146,7 @@ static void layer_surface_node_destroy(struct wl_listener *listener, void *data)
 }
 static void layer_surface_output_destroy(struct wl_listener *listener, void *data)
 {
+    (void) data;
     struct diyac_layer_surface *layer =
         wl_container_of(listener, layer, output_destroy);
     layer->scene_layer_surface->layer_surface->output = NULL;
@@ -150,6 +155,7 @@ static void layer_surface_output_destroy(struct wl_listener *listener, void *dat
 static void
 popup_handle_destroy(struct wl_listener *listener, void *data)
 {
+    (void)data;
     struct diyac_popup *popup = wl_container_of(listener, popup, destroy);
     wl_list_remove(&popup->destroy.link);
     wl_list_remove(&popup->new_popup.link);
@@ -165,6 +171,7 @@ popup_handle_destroy(struct wl_listener *listener, void *data)
 
 static void popup_handle_commit(struct wl_listener *listener, void *data)
 {
+    (void)data;
     struct diyac_popup *popup =
         wl_container_of(listener, popup, commit);
     struct wlr_box popup_box ;
@@ -352,7 +359,7 @@ void diyac_new_layer_surface(struct wl_listener *listener, void *data)
      */
     struct wlr_layer_surface_v1_state old_state = layer_surface->current;
     layer_surface->current = layer_surface->pending;
-    diyac_output_update_usable_area(output);
+    // diyac_output_update_usable_area(output);
     layer_surface->current = old_state;
 }
 

meson.build

@@ -0,0 +1,75 @@
+project('diyac',
+    ['c'],
+    version: '0.1.2',
+    license: 'MIT',
+    meson_version: '>=0.58.0',
+    default_options: ['c_std=gnu11', 'warning_level=3'])
+
+lib_so_version = '0'
+
+add_project_arguments(
+    [
+        '-Wno-pedantic',
+        '-Werror=implicit-function-declaration',
+        '-Werror=return-type',
+        '-DWLR_USE_UNSTABLE',
+        '-D__COMPOSITOR_VERSION__="@0@"'.format(meson.project_version())
+    ],
+    language: 'c')
+
+wlroots = dependency('wlroots')
+wayland_server = dependency('wayland-server', version: '>=1.10.0')
+xkbcommon = dependency('xkbcommon')
+
+# wayland_scanner is required, but we can find it without pkg-config
+wayland_scanner = find_program('wayland-scanner')
+
+wayland_protocols = dependency('wayland-protocols', version: '>=1.16')
+
+wl_protocol_dir = wayland_protocols.get_variable('pkgdatadir')
+
+
+wayland_targets=[]
+
+wl_protocols = [
+    wl_protocol_dir / 'stable/xdg-shell/xdg-shell',
+    'protocol/wlr-layer-shell-unstable-v1',
+    'protocol/wlr-output-power-management-unstable-v1',
+]
+
+foreach proto : wl_protocols
+  xml  = ''.join([proto,'.xml']) 
+  header = ''.join([proto.split('/').get(-1),'-protocol.h'])
+  cfile = ''.join([proto.split('/').get(-1),'-protocol.c'])
+  wayland_targets += custom_target(header,output:header,input:xml,
+      command: [ wayland_scanner, 'server-header', '@INPUT@', '@OUTPUT@' ] )
+  wayland_targets += custom_target(cfile,output:cfile,input:xml,
+      command: [ wayland_scanner, 'private-code', '@INPUT@', '@OUTPUT@' ] )
+endforeach
+
+
+incdir = include_directories([
+])
+
+src = [
+    'diyac.c',
+    'cursor.c',
+    'output.c',
+    'seat.c',
+    'node.c',
+    'view.c',
+    'foreign.c',
+    'xdg.c',
+    'layer.c',
+    'session.c',
+    'idle.c',
+    wayland_targets
+]
+
+buil_dep = [wlroots, wayland_server, xkbcommon]
+
+executable(
+    'diyac',
+    src,
+    dependencies: buil_dep,
+    include_directories : incdir)

node.c

@@ -5,6 +5,7 @@
 
 static void destroy_notify(struct wl_listener *listener, void *data)
 {
+    (void)data;
     struct diyac_node_descriptor *node_descriptor =
         wl_container_of(listener, node_descriptor, destroy);
     wl_list_remove(&node_descriptor->destroy.link);

output.c

@@ -3,14 +3,66 @@
 #include <stdlib.h>
 #include <stdbool.h>
 #include <string.h>
+#include <wlr/backend/wayland.h>
+#include <wlr/types/wlr_output.h>
+#include <wlr/types/wlr_xdg_output_v1.h>
+#include <wlr/types/wlr_scene.h>
+#include <wlr/util/log.h>
+#include <assert.h>
 #include "output.h"
 #include "layer.h"
 #include "node.h"
 #include "view.h"
 #include "session.h"
 
+/*
+ * While an output layout change is in process, this counter is
+ * non-zero and causes change-events from the wlr_output_layout
+ * to be ignored (to prevent, for example, moving views in a
+ * transitory layout state).  Once the counter reaches zero,
+ * do_output_layout_change() must be called explicitly.
+ */
+static int g_pending_output_layout_change = 0;
+
+static void output_state_init(struct diyac_output *output)
+{
+    wlr_output_state_init(&output->pending_state);
+
+    /*
+     * As there is no direct way to convert an existing output
+     * configuration to an output_state we first convert it
+     * to a temporary output-management config and then apply
+     * it to an empty wlr_output_state.
+     */
+    struct wlr_output_configuration_v1 *backup_config =
+        wlr_output_configuration_v1_create();
+    struct wlr_output_configuration_head_v1 *backup_head =
+        wlr_output_configuration_head_v1_create(
+            backup_config, output->wlr_output);
+
+    wlr_output_head_v1_state_apply(&backup_head->state, &output->pending_state);
+    wlr_output_configuration_v1_destroy(backup_config);
+}
+
+static bool output_state_commit(struct diyac_output *output)
+{
+    bool committed =
+        wlr_output_commit_state(output->wlr_output, &output->pending_state);
+    if (committed)
+    {
+        wlr_output_state_finish(&output->pending_state);
+        wlr_output_state_init(&output->pending_state);
+    }
+    else
+    {
+        wlr_log(WLR_ERROR, "Failed to commit frame");
+    }
+    return committed;
+}
+
 static void output_frame(struct wl_listener *listener, void *data)
 {
+    (void)data;
     /* This function is called every time an output is ready to display a frame,
      * generally at the output's refresh rate (e.g. 60Hz). */
     struct diyac_output *output = wl_container_of(listener, output, frame);
@@ -27,20 +79,126 @@ static void output_frame(struct wl_listener *listener, void *data)
     wlr_scene_output_send_frame_done(scene_output, &now);
 }
 
+static struct wlr_output_configuration_v1 *create_output_config(struct diyac_server *server)
+{
+    struct wlr_output_configuration_v1 *config =
+        wlr_output_configuration_v1_create();
+    if (!config)
+    {
+        wlr_log(WLR_ERROR, "wlr_output_configuration_v1_create()");
+        return NULL;
+    }
+
+    struct diyac_output *output;
+    wl_list_for_each(output, &server->outputs, link)
+    {
+        struct wlr_output_configuration_head_v1 *head =
+            wlr_output_configuration_head_v1_create(config,
+                                                    output->wlr_output);
+        if (!head)
+        {
+            wlr_log(WLR_ERROR,
+                    "wlr_output_configuration_head_v1_create()");
+            wlr_output_configuration_v1_destroy(config);
+            return NULL;
+        }
+        struct wlr_box box;
+        wlr_output_layout_get_box(server->output_layout,
+                                  output->wlr_output, &box);
+        if (!wlr_box_empty(&box))
+        {
+            head->state.x = box.x;
+            head->state.y = box.y;
+        }
+        else
+        {
+            wlr_log(WLR_ERROR, "failed to get output layout box");
+        }
+    }
+    return config;
+}
+
+/* returns true if usable area changed */
+static bool update_usable_area(struct diyac_output *output)
+{
+    struct wlr_box old = output->usable_area;
+    diyac_layers_arrange(output);
+
+    return !wlr_box_equal(&old, &output->usable_area);
+}
+
+static void do_output_layout_change(struct diyac_server *server)
+{
+    if (!g_pending_output_layout_change)
+    {
+        struct wlr_output_configuration_v1 *config =
+            create_output_config(server);
+        if (config)
+        {
+            wlr_output_manager_v1_set_configuration(
+                server->output_manager, config);
+        }
+        else
+        {
+            wlr_log(WLR_ERROR,
+                    "wlr_output_manager_v1_set_configuration()");
+        }
+        struct diyac_output *output;
+
+        wl_list_for_each(output, &server->outputs, link)
+        {
+            diyac_output_update_usable_area(output);
+        }
+        wlr_cursor_move(server->seat.cursor, NULL, 0, 0);
+    }
+}
+
 static void output_request_state(struct wl_listener *listener, void *data)
 {
-    /* This function is called when the backend requests a new state for
-     * the output. For example, Wayland and X11 backends request a new mode
-     * when the output window is resized. */
+    /* This ensures nested backends can be resized */
     struct diyac_output *output = wl_container_of(listener, output, request_state);
     const struct wlr_output_event_request_state *event = data;
-    wlr_output_commit_state(output->wlr_output, event->state);
+
+    /*
+     * If wlroots ever requests other state changes here we could
+     * restore more of ddc9047a67cd53b2948f71fde1bbe9118000dd3f.
+     */
+    if (event->state->committed == WLR_OUTPUT_STATE_MODE)
+    {
+        /* Only the mode has changed */
+        switch (event->state->mode_type)
+        {
+        case WLR_OUTPUT_STATE_MODE_FIXED:
+            wlr_output_state_set_mode(&output->pending_state,
+                                      event->state->mode);
+            break;
+        case WLR_OUTPUT_STATE_MODE_CUSTOM:
+            wlr_output_state_set_custom_mode(&output->pending_state,
+                                             event->state->custom_mode.width,
+                                             event->state->custom_mode.height,
+                                             event->state->custom_mode.refresh);
+            break;
+        }
+        wlr_output_schedule_frame(output->wlr_output);
+        return;
+    }
+
+    /*
+     * Fallback path for everything that we didn't handle above.
+     * The commit will cause a black frame injection so this
+     * path causes flickering during resize of nested outputs.
+     */
+    if (!wlr_output_commit_state(output->wlr_output, event->state))
+    {
+        wlr_log(WLR_ERROR, "Backend requested a new state that could not be applied");
+    }
 }
 
 static void output_destroy(struct wl_listener *listener, void *data)
 {
+    (void)data;
     struct diyac_output *output = wl_container_of(listener, output, destroy);
-    if(output->lock_handle)
+    if (output->lock_handle)
     {
         diyac_session_unlock_output(output);
     }
@@ -51,31 +209,141 @@ static void output_destroy(struct wl_listener *listener, void *data)
     wlr_scene_node_destroy(&output->scenes.overlay->node);
     wlr_scene_node_destroy(&output->scenes.session->node);
 
-
     wl_list_remove(&output->frame.link);
     wl_list_remove(&output->request_state.link);
     wl_list_remove(&output->destroy.link);
     wl_list_remove(&output->link);
 
-    struct diyac_server* server = output->server;
-    struct diyac_view * view;
-    wl_list_for_each(view, &server->views, link) {
-        if (view->output == output) {
+    struct diyac_server *server = output->server;
+    struct diyac_view *view;
+    wl_list_for_each(view, &server->views, link)
+    {
+        if (view->output == output)
+        {
             /**
-            * TODO: testing this case
-            */
+             * TODO: testing this case
+             */
             view->output = NULL;
-            if(&server->outputs != server->outputs.next)
+            if (&server->outputs != server->outputs.next)
             {
                 view->output = wl_container_of(server->outputs.next, view->output, link);
                 diyac_view_update_geometry(view, false);
             }
         }
     }
+    wlr_output_state_finish(&output->pending_state);
     free(output);
 }
 
-void diyac_server_new_output(struct wl_listener *listener, void *data)
+static bool output_test_auto(struct wlr_output *wlr_output, struct wlr_output_state *state,
+                             bool is_client_request)
+{
+    wlr_log(WLR_DEBUG, "testing modes for %s", wlr_output->name);
+    /*
+     * When a client requests a specific mode, test only that mode. Here
+     * we interpret a custom_mode of all zeroes as "none/any"; this is
+     * seen e.g. with kanshi configs containing no "mode" field. In
+     * theory, (state->committed & WLR_OUTPUT_STATE_MODE) should be zero
+     * in this case, but this is not seen in practice.
+     *
+     * If the wlr_output_state did not come from a client request, then
+     * ignore the mode/custom_mode fields which are not meaningful.
+     */
+    if (is_client_request && (state->mode || state->custom_mode.width || state->custom_mode.height || state->custom_mode.refresh))
+    {
+        if (state->mode)
+        {
+            wlr_log(WLR_DEBUG, "testing requested mode %dx%d@%d",
+                    state->mode->width, state->mode->height,
+                    state->mode->refresh);
+        }
+        else
+        {
+            wlr_log(WLR_DEBUG, "testing custom mode %dx%d@%d",
+                    state->custom_mode.width,
+                    state->custom_mode.height,
+                    state->custom_mode.refresh);
+        }
+        return wlr_output_test_state(wlr_output, state);
+    }
+
+    struct wlr_output_mode *preferred_mode =
+        wlr_output_preferred_mode(wlr_output);
+    if (preferred_mode)
+    {
+        wlr_log(WLR_DEBUG, "testing preferred mode %dx%d@%d",
+                preferred_mode->width, preferred_mode->height,
+                preferred_mode->refresh);
+        wlr_output_state_set_mode(state, preferred_mode);
+        if (wlr_output_test_state(wlr_output, state))
+        {
+            return true;
+        }
+    }
+
+    /*
+     * Sometimes the preferred mode is not available due to hardware
+     * constraints (e.g. GPU or cable bandwidth limitations). In these
+     * cases it's better to fallback to lower modes than to end up with
+     * a black screen. See sway@4cdc4ac6
+     */
+    struct wlr_output_mode *mode;
+    wl_list_for_each(mode, &wlr_output->modes, link)
+    {
+        if (mode == preferred_mode)
+        {
+            continue;
+        }
+        wlr_log(WLR_DEBUG, "testing fallback mode %dx%d@%d",
+                mode->width, mode->height, mode->refresh);
+        wlr_output_state_set_mode(state, mode);
+        if (wlr_output_test_state(wlr_output, state))
+        {
+            return true;
+        }
+    }
+
+    /* Reset mode if none worked (we may still try to commit) */
+    wlr_output_state_set_mode(state, NULL);
+    return false;
+}
+
+static void add_output_to_layout(struct diyac_server *server, struct diyac_output *output)
+{
+    struct wlr_output *wlr_output = output->wlr_output;
+    struct wlr_output_layout_output *layout_output =
+        wlr_output_layout_add_auto(server->output_layout, wlr_output);
+    if (!layout_output)
+    {
+        wlr_log(WLR_ERROR, "unable to add output to layout");
+        return;
+    }
+
+    if (!output->scene_output)
+    {
+        output->scene_output =
+            wlr_scene_output_create(server->scene, wlr_output);
+        if (!output->scene_output)
+        {
+            wlr_log(WLR_ERROR, "unable to create scene output");
+            return;
+        }
+        /*
+         * Note: wlr_scene_output_layout_add_output() is not
+         * safe to call twice, so we call it only when initially
+         * creating the scene_output.
+         */
+        wlr_scene_output_layout_add_output(server->scene_layout,
+                                           layout_output, output->scene_output);
+    }
+    /* Create lock surface if needed */
+    if (server->lock)
+    {
+        diyac_session_lock_output(output);
+    }
+}
+
+static void diyac_server_new_output(struct wl_listener *listener, void *data)
 {
     /* This event is raised by the backend when a new output (aka a display or
      * monitor) becomes available. */
@@ -87,26 +355,6 @@ void diyac_server_new_output(struct wl_listener *listener, void *data)
      * and our renderer. Must be done once, before commiting the output */
     wlr_output_init_render(wlr_output, server->allocator, server->renderer);
 
-    /* The output may be disabled, switch it on. */
-    struct wlr_output_state state;
-    wlr_output_state_init(&state);
-    wlr_output_state_set_enabled(&state, true);
-
-    /* Some backends don't have modes. DRM+KMS does, and we need to set a mode
-     * before we can use the output. The mode is a tuple of (width, height,
-     * refresh rate), and each monitor supports only a specific set of modes. We
-     * just pick the monitor's preferred mode, a more sophisticated compositor
-     * would let the user configure it. */
-    struct wlr_output_mode *mode = wlr_output_preferred_mode(wlr_output);
-    if (mode != NULL)
-    {
-        wlr_output_state_set_mode(&state, mode);
-    }
-
-    /* Atomically applies the new output state. */
-    wlr_output_commit_state(wlr_output, &state);
-    wlr_output_state_finish(&state);
-
     /* Allocates and configures our state for this output */
     struct diyac_output *output = calloc(1, sizeof(*output));
     output->wlr_output = wlr_output;
@@ -116,6 +364,9 @@ void diyac_server_new_output(struct wl_listener *listener, void *data)
     output->usable_area.y = 0;
     output->usable_area.width = wlr_output->width;
     output->usable_area.height = wlr_output->height;
+
+    output_state_init(output);
+
     /* Sets up a listener for the frame event. */
     output->frame.notify = output_frame;
     wl_signal_add(&wlr_output->events.frame, &output->frame);
@@ -154,10 +405,6 @@ void diyac_server_new_output(struct wl_listener *listener, void *data)
     output->layer_tree[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY] = output->scenes.overlay;
 
     output->lock_handle = NULL;
-    if(server->lock)
-    {
-        diyac_session_lock_output(output);
-    }
     /*
      * Set the z-positions to achieve the following order (from top to
      * bottom):
@@ -176,28 +423,25 @@ void diyac_server_new_output(struct wl_listener *listener, void *data)
     wlr_scene_node_raise_to_top(&output->scenes.popup->node);
     wlr_scene_node_raise_to_top(&output->scenes.session->node);
 
-    /* Adds this to the output layout. The add_auto function arranges outputs
-     * from left-to-right in the order they appear. A more sophisticated
-     * compositor would let the user configure the arrangement of outputs in the
-     * layout.
-     *
-     * The output layout utility automatically adds a wl_output global to the
-     * display, which Wayland clients can see to find out information about the
-     * output (such as DPI, scale factor, manufacturer, etc).
-     */
-    struct wlr_output_layout_output *l_output = wlr_output_layout_add_auto(server->output_layout,
-                                                                           wlr_output);
-    struct wlr_scene_output *scene_output = wlr_scene_output_create(server->scene, wlr_output);
-    wlr_scene_output_layout_add_output(server->scene_layout, l_output, scene_output);
-}
+    wlr_output_state_set_enabled(&output->pending_state, true);
 
-/* returns true if usable area changed */
-static bool update_usable_area(struct diyac_output *output)
-{
-    struct wlr_box old = output->usable_area;
-    diyac_layers_arrange(output);
-
-    return !wlr_box_equal(&old, &output->usable_area);
+    if (!output_test_auto(wlr_output, &output->pending_state,
+                          /* is_client_request */ false))
+    {
+        wlr_log(WLR_INFO, "mode test failed for output %s",
+                wlr_output->name);
+        /*
+         * Continue anyway. For some reason, the test fails when
+         * running nested, yet the following commit succeeds.
+         */
+    }
+    output_state_commit(output);
+    wlr_output_effective_resolution(wlr_output,
+                                    &output->usable_area.width, &output->usable_area.height);
+    g_pending_output_layout_change++;
+    add_output_to_layout(server, output);
+    g_pending_output_layout_change--;
+    do_output_layout_change(server);
 }
 
 void diyac_output_update_usable_area(struct diyac_output *output)
@@ -223,9 +467,9 @@ struct diyac_output *diyac_output_from_cursor(struct diyac_server *server)
     return output->data;
 }
 
-void diyac_output_usable_area(struct diyac_output *output,struct wlr_box* area)
+void diyac_output_usable_area(struct diyac_output *output, struct wlr_box *area)
 {
-    if(!area | !output)
+    if (!area | !output)
     {
         return;
     }
@@ -235,22 +479,324 @@ void diyac_output_usable_area(struct diyac_output *output,struct wlr_box* area)
                                     output->wlr_output, &ox, &oy);
     box.x -= ox;
     box.y -= oy;
-    memcpy(area,&box,sizeof(box));
+    memcpy(area, &box, sizeof(box));
 }
 
-void diyac_output_full_area(struct diyac_output *output,struct wlr_box* area)
+void diyac_output_full_area(struct diyac_output *output, struct wlr_box *area)
 {
-    if(!area | !output)
+    if (!area | !output)
     {
         return;
     }
     struct wlr_box box = {0};
     wlr_output_effective_resolution(output->wlr_output,
-                                        &box.width, &box.height);
+                                    &box.width, &box.height);
     double ox = 0, oy = 0;
     wlr_output_layout_output_coords(output->server->output_layout,
-                                        output->wlr_output, &ox, &oy);
+                                    output->wlr_output, &ox, &oy);
     box.x -= ox;
     box.y -= oy;
-    memcpy(area,&box,sizeof(box));
+    memcpy(area, &box, sizeof(box));
+}
+
+static void diyac_output_power_manager_set_mode(struct wl_listener *listener, void *data)
+{
+    struct diyac_server *server = wl_container_of(listener, server,
+                                                  output_power_manager_set_mode);
+    struct wlr_output_power_v1_set_mode_event *event = data;
+    struct diyac_output *output = event->output->data;
+    assert(output);
+
+    switch (event->mode)
+    {
+    case ZWLR_OUTPUT_POWER_V1_MODE_OFF:
+        if (!event->output->enabled)
+        {
+            return;
+        }
+        wlr_output_state_set_enabled(&output->pending_state, false);
+        output_state_commit(output);
+        break;
+    case ZWLR_OUTPUT_POWER_V1_MODE_ON:
+        if (event->output->enabled)
+        {
+            return;
+        }
+        wlr_output_state_set_enabled(&output->pending_state, true);
+        output_state_commit(output);
+        /*
+         * Re-set the cursor image so that the cursor
+         * isn't invisible on the newly enabled output.
+         */
+        // cursor_update_image(&server->seat);
+        break;
+    }
+}
+
+static void handle_output_layout_change(struct wl_listener *listener, void *data)
+{
+    (void)data;
+    struct diyac_server *server =
+        wl_container_of(listener, server, output_layout_change);
+    do_output_layout_change(server);
+}
+
+static bool verify_output_config_v1(const struct wlr_output_configuration_v1 *config)
+{
+    const char *err_msg = NULL;
+    struct wlr_output_configuration_head_v1 *head;
+    wl_list_for_each(head, &config->heads, link)
+    {
+        if (!head->state.enabled)
+        {
+            continue;
+        }
+
+        /* Handle custom modes */
+        if (!head->state.mode)
+        {
+            int32_t refresh = head->state.custom_mode.refresh;
+            if (wlr_output_is_wl(head->state.output) && refresh != 0)
+            {
+                /* Wayland backend does not support refresh rates */
+                err_msg = "Wayland backend refresh rates unsupported";
+                goto custom_mode_failed;
+            }
+        }
+
+        if (wlr_output_is_wl(head->state.output) && !head->state.adaptive_sync_enabled)
+        {
+            err_msg = "Wayland backend requires adaptive sync";
+            goto custom_mode_failed;
+        }
+
+        /*
+         * Ensure the new output state can be applied on
+         * its own and inform the client when it can not.
+         *
+         * Applying the changes may still fail later when
+         * getting mixed with wlr_output->pending which
+         * may contain further unrelated changes.
+         */
+        struct wlr_output_state output_state;
+        wlr_output_state_init(&output_state);
+        wlr_output_head_v1_state_apply(&head->state, &output_state);
+
+        if (!output_test_auto(head->state.output, &output_state,
+                              /* is_client_request */ true))
+        {
+            wlr_output_state_finish(&output_state);
+            return false;
+        }
+        wlr_output_state_finish(&output_state);
+    }
+
+    return true;
+
+custom_mode_failed:
+    assert(err_msg);
+    wlr_log(WLR_INFO, "%s (%s: %dx%d@%d)",
+            err_msg,
+            head->state.output->name,
+            head->state.custom_mode.width,
+            head->state.custom_mode.height,
+            head->state.custom_mode.refresh);
+    return false;
+}
+
+void diyac_output_enable_adaptive_sync(struct diyac_output *output, bool enabled)
+{
+    wlr_output_state_set_adaptive_sync_enabled(&output->pending_state, enabled);
+    if (!wlr_output_test_state(output->wlr_output, &output->pending_state))
+    {
+        wlr_output_state_set_adaptive_sync_enabled(&output->pending_state, false);
+        wlr_log(WLR_DEBUG,
+                "failed to enable adaptive sync for output %s",
+                output->wlr_output->name);
+    }
+    else
+    {
+        wlr_log(WLR_INFO, "adaptive sync %sabled for output %s",
+                enabled ? "en" : "dis", output->wlr_output->name);
+    }
+}
+
+static bool output_config_apply(struct diyac_server *server, struct wlr_output_configuration_v1 *config)
+{
+    bool success = true;
+    g_pending_output_layout_change++;
+    struct wlr_output_configuration_head_v1 *head;
+    wl_list_for_each(head, &config->heads, link)
+    {
+        struct wlr_output *o = head->state.output;
+        struct diyac_output *output = o->data;
+        struct wlr_output_state *os = &output->pending_state;
+        bool output_enabled = head->state.enabled;
+
+        wlr_output_state_set_enabled(os, output_enabled);
+        if (output_enabled)
+        {
+            /* Output specific actions only */
+            if (head->state.mode)
+            {
+                wlr_output_state_set_mode(os, head->state.mode);
+            }
+            else
+            {
+                wlr_output_state_set_custom_mode(os,
+                                                 head->state.custom_mode.width,
+                                                 head->state.custom_mode.height,
+                                                 head->state.custom_mode.refresh);
+            }
+            /*
+             * Try to ensure a valid mode. Ignore failures
+             * here and just check the commit below.
+             */
+            (void)output_test_auto(o, os,
+                                   /* is_client_request */ true);
+            wlr_output_state_set_scale(os, head->state.scale);
+            wlr_output_state_set_transform(os, head->state.transform);
+            diyac_output_enable_adaptive_sync(output,
+                                        head->state.adaptive_sync_enabled);
+        }
+        if (!output_state_commit(output))
+        {
+            /*
+             * FIXME: This is only part of the story, we should revert
+             *        all previously committed outputs as well here.
+             *
+             *        See https://github.com/labwc/labwc/pull/1528
+             */
+            wlr_log(WLR_INFO, "Output config commit failed: %s", o->name);
+            success = false;
+            break;
+        }
+
+        /*
+         * Add or remove output from layout only if the commit went
+         * through. Note that at startup, the output may have already
+         * been enabled but not yet been added to the layout.
+         */
+        bool was_in_layout =
+            !!wlr_output_layout_get(server->output_layout, o);
+
+        if (output_enabled)
+        {
+            if (!was_in_layout)
+            {
+                add_output_to_layout(server, output);
+            }
+
+            struct wlr_box pos = {0};
+            wlr_output_layout_get_box(server->output_layout, o, &pos);
+            if (pos.x != head->state.x || pos.y != head->state.y)
+            {
+                /*
+                 * This overrides the automatic layout
+                 *
+                 * wlr_output_layout_add() in fact means _move()
+                 */
+                wlr_output_layout_add(server->output_layout, o,
+                                      head->state.x, head->state.y);
+            }
+        }
+        else if (was_in_layout)
+        {
+            /*
+             * At time of writing, wlr_output_layout_remove()
+             * indirectly destroys the wlr_scene_output, but
+             * this behavior may change in future. To remove
+             * doubt and avoid either a leak or double-free,
+             * explicitly destroy the wlr_scene_output before
+             * calling wlr_output_layout_remove().
+             */
+            wlr_scene_output_destroy(output->scene_output);
+            wlr_output_layout_remove(server->output_layout, o);
+            output->scene_output = NULL;
+        }
+    }
+    g_pending_output_layout_change--;
+    do_output_layout_change(server);
+    return success;
+}
+
+static void handle_output_manager_apply(struct wl_listener *listener, void *data)
+{
+    struct diyac_server *server =
+        wl_container_of(listener, server, output_manager_apply);
+    struct wlr_output_configuration_v1 *config = data;
+
+    bool config_is_good = verify_output_config_v1(config);
+
+    if (config_is_good && output_config_apply(server, config))
+    {
+        wlr_output_configuration_v1_send_succeeded(config);
+    }
+    else
+    {
+        wlr_output_configuration_v1_send_failed(config);
+    }
+    wlr_output_configuration_v1_destroy(config);
+    /*
+    struct output *output;
+    wl_list_for_each(output, &server->outputs, link)
+    {
+        wlr_xcursor_manager_load(server->seat.xcursor_manager,
+                                 output->wlr_output->scale);
+    }
+    cursor_update_focus(server);
+    cursor_update_image(&server->seat);
+    */
+}
+
+static void handle_output_manager_test(struct wl_listener *listener, void *data)
+{
+    (void) listener;
+    struct wlr_output_configuration_v1 *config = data;
+
+    if (verify_output_config_v1(config))
+    {
+        wlr_output_configuration_v1_send_succeeded(config);
+    }
+    else
+    {
+        wlr_output_configuration_v1_send_failed(config);
+    }
+    wlr_output_configuration_v1_destroy(config);
+}
+
+void diyac_output_init(struct diyac_server *server)
+{
+    /* Creates an output layout, which a wlroots utility for working with an
+     * arrangement of screens in a physical layout. */
+    server->output_layout = wlr_output_layout_create(server->wl_display);
+
+    /* Configure a listener to be notified when new outputs are available on the
+     * backend. */
+    wl_list_init(&server->outputs);
+    server->new_output.notify = diyac_server_new_output;
+    wl_signal_add(&server->backend->events.new_output, &server->new_output);
+
+    server->scene_layout = wlr_scene_attach_output_layout(server->scene, server->output_layout);
+    wlr_xdg_output_manager_v1_create(server->wl_display, server->output_layout);
+
+    server->output_layout_change.notify = handle_output_layout_change;
+    wl_signal_add(&server->output_layout->events.change,
+                  &server->output_layout_change);
+
+    server->output_manager = wlr_output_manager_v1_create(server->wl_display);
+    server->output_manager_apply.notify = handle_output_manager_apply;
+    wl_signal_add(&server->output_manager->events.apply,
+                  &server->output_manager_apply);
+
+    server->output_manager_test.notify = handle_output_manager_test;
+    wl_signal_add(&server->output_manager->events.test,
+                  &server->output_manager_test);
+
+    server->output_power_manager =
+        wlr_output_power_manager_v1_create(server->wl_display);
+    server->output_power_manager_set_mode.notify =
+        diyac_output_power_manager_set_mode;
+    wl_signal_add(&server->output_power_manager->events.set_mode,
+                  &server->output_power_manager_set_mode);
 }

output.h

@@ -2,9 +2,10 @@
 #define DIYAC_OUTPUT_H
 #include "diyac.h"
 
-void diyac_server_new_output(struct wl_listener *listener, void *data);
 void diyac_output_update_usable_area(struct diyac_output *output);
 struct diyac_output *diyac_output_from_cursor(struct diyac_server *server);
 void diyac_output_usable_area(struct diyac_output * output,struct wlr_box* box);
 void diyac_output_full_area(struct diyac_output *output,struct wlr_box* area);
+void diyac_output_init(struct diyac_server * server);
+void diyac_output_enable_adaptive_sync(struct diyac_output *output, bool enabled);
 #endif

protocol/wlr-output-power-management-unstable-v1.xml

@@ -0,0 +1,128 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="wlr_output_power_management_unstable_v1">
+  <copyright>
+    Copyright © 2019 Purism SPC
+
+    Permission is hereby granted, free of charge, to any person obtaining a
+    copy of this software and associated documentation files (the "Software"),
+    to deal in the Software without restriction, including without limitation
+    the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the
+    Software is furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice (including the next
+    paragraph) shall be included in all copies or substantial portions of the
+    Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+    DEALINGS IN THE SOFTWARE.
+  </copyright>
+
+  <description summary="Control power management modes of outputs">
+    This protocol allows clients to control power management modes
+    of outputs that are currently part of the compositor space. The
+    intent is to allow special clients like desktop shells to power
+    down outputs when the system is idle.
+
+    To modify outputs not currently part of the compositor space see
+    wlr-output-management.
+
+    Warning! The protocol described in this file is experimental and
+    backward incompatible changes may be made. Backward compatible changes
+    may be added together with the corresponding interface version bump.
+    Backward incompatible changes are done by bumping the version number in
+    the protocol and interface names and resetting the interface version.
+    Once the protocol is to be declared stable, the 'z' prefix and the
+    version number in the protocol and interface names are removed and the
+    interface version number is reset.
+  </description>
+
+  <interface name="zwlr_output_power_manager_v1" version="1">
+    <description summary="manager to create per-output power management">
+      This interface is a manager that allows creating per-output power
+      management mode controls.
+    </description>
+
+    <request name="get_output_power">
+      <description summary="get a power management for an output">
+        Create an output power management mode control that can be used to
+        adjust the power management mode for a given output.
+      </description>
+      <arg name="id" type="new_id" interface="zwlr_output_power_v1"/>
+      <arg name="output" type="object" interface="wl_output"/>
+    </request>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the manager">
+        All objects created by the manager will still remain valid, until their
+        appropriate destroy request has been called.
+      </description>
+    </request>
+  </interface>
+
+  <interface name="zwlr_output_power_v1" version="1">
+    <description summary="adjust power management mode for an output">
+      This object offers requests to set the power management mode of
+      an output.
+    </description>
+
+    <enum name="mode">
+      <entry name="off" value="0"
+             summary="Output is turned off."/>
+      <entry name="on" value="1"
+             summary="Output is turned on, no power saving"/>
+    </enum>
+
+    <enum name="error">
+      <entry name="invalid_mode" value="1" summary="nonexistent power save mode"/>
+    </enum>
+
+    <request name="set_mode">
+      <description summary="Set an outputs power save mode">
+        Set an output's power save mode to the given mode. The mode change
+        is effective immediately. If the output does not support the given
+        mode a failed event is sent.
+      </description>
+      <arg name="mode" type="uint" enum="mode" summary="the power save mode to set"/>
+    </request>
+
+    <event name="mode">
+      <description summary="Report a power management mode change">
+        Report the power management mode change of an output.
+
+        The mode event is sent after an output changed its power
+        management mode. The reason can be a client using set_mode or the
+        compositor deciding to change an output's mode.
+        This event is also sent immediately when the object is created
+        so the client is informed about the current power management mode.
+      </description>
+      <arg name="mode" type="uint" enum="mode"
+           summary="the output's new power management mode"/>
+    </event>
+
+    <event name="failed">
+      <description summary="object no longer valid">
+        This event indicates that the output power management mode control
+        is no longer valid. This can happen for a number of reasons,
+        including:
+        - The output doesn't support power management
+        - Another client already has exclusive power management mode control
+          for this output
+        - The output disappeared
+
+        Upon receiving this event, the client should destroy this object.
+      </description>
+    </event>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy this power management">
+        Destroys the output power management mode control object.
+      </description>
+    </request>
+  </interface>
+</protocol>

seat.c

@@ -7,9 +7,11 @@
 #include "seat.h"
 #include "view.h"
 #include "output.h"
+#include "idle.h"
 
 static void configure_keyboard(struct diyac_seat* seat, struct diyac_input* input, bool force)
 {
+    (void) seat;
     struct wlr_input_device *device = input->device;
     assert(device->type == WLR_INPUT_DEVICE_KEYBOARD);
     struct diyac_keyboard *keyboard = (struct diyac_keyboard *)input;
@@ -41,6 +43,7 @@ static void configure_keyboard(struct diyac_seat* seat, struct diyac_input* inpu
 static void keyboard_handle_modifiers(
     struct wl_listener *listener, void *data)
 {
+    (void) data;
     /* This event is raised when a modifier key, such as shift or alt, is
      * pressed. We simply communicate this to the client. */
     struct diyac_keyboard *keyboard =
@@ -95,7 +98,7 @@ static void keyboard_handle_key(
         wl_container_of(listener, keyboard, key);
     struct wlr_keyboard_key_event *event = data;
     struct wlr_seat *seat = keyboard->input.seat->wlr_seat;
-
+    diya_idle_manager_notify_activity(seat);
     /* Translate libinput keycode -> xkbcommon */
     // wlr_log(WLR_INFO, "receive keycode %d", event->keycode);
     uint32_t keycode = event->keycode + 8;
@@ -113,7 +116,7 @@ static void keyboard_handle_key(
          * process it as a compositor keybinding. */
         for (int i = 0; i < nsyms; i++)
         {
-            handled = handle_keybinding(keyboard->input.seat->server, syms[i]);
+            handled |= handle_keybinding(keyboard->input.seat->server, syms[i]);
         }
     }
 
@@ -128,6 +131,7 @@ static void keyboard_handle_key(
 
 static void input_handle_destroy(struct wl_listener *listener, void *data)
 {
+    (void) data;
     /* This event is raised by the keyboard base wlr_input_device to signal
      * the destruction of the wlr_keyboard. It will no longer receive events
      * and should be destroyed.

session.c

@@ -39,6 +39,7 @@ static void session_lock_update_geometry(struct diyac_output *output, bool align
 
 static void handle_surface_map(struct wl_listener *listener, void *data)
 {
+    (void) data;
     struct diyac_output_lock_handle *handle = wl_container_of(listener, handle, surface_map);
     if (!g_server->lock->focused)
     {
@@ -49,6 +50,7 @@ static void handle_surface_map(struct wl_listener *listener, void *data)
 
 static void handle_surface_destroy(struct wl_listener *listener, void *data)
 {
+    (void) data;
     struct diyac_output_lock_handle *handle = wl_container_of(listener, handle, surface_destroy);
 
     if (g_server->lock->focused == handle->surface->surface)
@@ -123,6 +125,7 @@ static void session_lock_destroy(struct diyac_session_lock *lock)
 
 static void handle_unlock(struct wl_listener *listener, void *data)
 {
+    (void) data;
     struct diyac_session_lock *lock = wl_container_of(listener, lock, unlock);
     wlr_log(WLR_INFO, "handle_unlock: Lock session is unlocked");
     session_lock_destroy(lock);
@@ -131,6 +134,7 @@ static void handle_unlock(struct wl_listener *listener, void *data)
 
 static void handle_session_lock_destroy(struct wl_listener *listener, void *data)
 {
+    (void) data;
     struct diyac_session_lock *lock = wl_container_of(listener, lock, destroy);
     lock->abandoned = true;
     wlr_log(WLR_INFO, "handle_session_lock_destroy: Lock session is destroyed without unlocking, session abandoned");
@@ -141,6 +145,7 @@ static void handle_session_lock_destroy(struct wl_listener *listener, void *data
 
 static void handle_new_session_lock(struct wl_listener *listener, void *data)
 {
+    (void) listener;
     struct wlr_session_lock_v1 *lock = data;
     if (g_server->lock)
     {
@@ -200,6 +205,8 @@ static void handle_commit(struct wl_listener *listener, void *data)
 
 static void handle_lock_manager_destroy(struct wl_listener *listener, void *data)
 {
+    (void) data;
+    (void) listener;
     if (g_server->lock)
     {
         session_lock_destroy(g_server->lock);
@@ -245,9 +252,9 @@ void diyac_session_lock_output(struct diyac_output *output)
     handle->background = wlr_scene_rect_create(handle->tree, 0, 0, black);
     if (!handle->background)
     {
+        wlr_scene_node_destroy(&handle->tree->node);
         free(handle);
         wlr_log(WLR_ERROR, "diyac_session_lock_output:Unable to create lock background");
-        wlr_scene_node_destroy(&handle->tree->node);
         exit(EXIT_FAILURE);
     }
     handle->surface = NULL;

view.c

@@ -26,10 +26,9 @@ static int handle_configure_timeout(void *data)
     return 0; /* ignored per wl_event_loop docs */
 }
 
-static void diyac_view_configure(struct diyac_view *view, struct wlr_box geo)
+void diya_view_set_pending_configure_serial(struct diyac_view* view, uint32_t serial)
 {
-    view->pending_size = geo;
-    view->configuration_serial = wlr_xdg_toplevel_set_size(view->xdg_toplevel, geo.width, geo.height);
+    view->configuration_serial = serial;
     if (!view->configuration_timeout)
     {
         view->configuration_timeout = wl_event_loop_add_timer(view->server->wl_event_loop, handle_configure_timeout, view);
@@ -37,10 +36,24 @@ static void diyac_view_configure(struct diyac_view *view, struct wlr_box geo)
     wl_event_source_timer_update(view->configuration_timeout, CONFIGURE_TIMEOUT_MS);
 }
 
+static void diyac_view_configure(struct diyac_view *view, struct wlr_box geo)
+{
+    view->pending_size = geo;
+    uint32_t serial = wlr_xdg_toplevel_set_size(view->xdg_toplevel, geo.width, geo.height);
+    if(serial > 0)
+    {
+        diya_view_set_pending_configure_serial(view, serial);
+    }
+}
+
 static void diyac_view_set_activated(struct diyac_view *view, bool activated)
 {
     struct diyac_server *server = view->server;
-    wlr_xdg_toplevel_set_activated(view->xdg_toplevel, activated);
+    uint32_t serial = wlr_xdg_toplevel_set_activated(view->xdg_toplevel, activated);
+    if(serial > 0)
+    {
+        diya_view_set_pending_configure_serial(view, serial);
+    }
     if (view->toplevel.handle)
     {
         wlr_foreign_toplevel_handle_v1_set_activated(view->toplevel.handle, activated);
@@ -170,8 +183,8 @@ void diyac_focus_topmost_view(struct diyac_server *server, bool raise)
 
 struct diyac_view *diyac_topmost_focusable_view(struct diyac_server *server)
 {
-    struct wlr_surface *prev =
-        server->seat.wlr_seat->keyboard_state.focused_surface;
+    //struct wlr_surface *prev =
+    //    server->seat.wlr_seat->keyboard_state.focused_surface;
     struct diyac_view *view;
     struct wl_list *node_list;
     struct wlr_scene_node *node;

view.h

@@ -22,4 +22,5 @@ void diyac_view_update_title(struct diyac_view * view);
 void diyac_view_update_app_id(struct diyac_view * view);
 void diyac_view_sync_geo(struct diyac_view *view);
 void diya_view_unfocus(struct diyac_view* view);
+void diya_view_set_pending_configure_serial(struct diyac_view* view, uint32_t serial);
 #endif

xdg.c

@@ -55,26 +55,44 @@ static void begin_interactive(struct diyac_view *toplevel,
 }
 static void xdg_toplevel_commit(struct wl_listener *listener, void *data)
 {
-    struct diyac_view *view = wl_container_of(listener, view, commit);
-    uint32_t serial = view->configuration_serial;
-    if (serial > 0 && serial == view->xdg_surface->current.configure_serial)
+    (void)data;
+    struct diyac_view *toplevel = wl_container_of(listener, toplevel, commit);
+    uint32_t serial = toplevel->configuration_serial;
+
+    struct wlr_xdg_surface *xdg_surface = toplevel->xdg_surface;
+    if (xdg_surface->initial_commit)
     {
-        wl_event_source_remove(view->configuration_timeout);
-        view->configuration_serial = 0;
-        view->configuration_timeout = NULL;
+        uint32_t serial =
+            wlr_xdg_surface_schedule_configure(xdg_surface);
+        uint32_t wm_caps = WLR_XDG_TOPLEVEL_WM_CAPABILITIES_MAXIMIZE | WLR_XDG_TOPLEVEL_WM_CAPABILITIES_FULLSCREEN | WLR_XDG_TOPLEVEL_WM_CAPABILITIES_MINIMIZE;
+        wlr_xdg_toplevel_set_wm_capabilities(toplevel->xdg_toplevel, wm_caps);
+        if(serial > 0)
+        {
+            diya_view_set_pending_configure_serial(toplevel, serial);
+        }
+        return;
+    }
+
+    if (serial > 0 && serial == toplevel->xdg_surface->current.configure_serial)
+    {
+        wl_event_source_remove(toplevel->configuration_timeout);
+        toplevel->configuration_serial = 0;
+        toplevel->configuration_timeout = NULL;
         // TODO move view
     }
-    diyac_view_sync_geo(view);
+    diyac_view_sync_geo(toplevel);
 }
 static void xdg_toplevel_map(struct wl_listener *listener, void *data)
 {
-
+    (void)data;
+    wlr_log(WLR_INFO, "xdg_toplevel_map: %p", listener);
     /* Called when the surface is mapped, or ready to display on-screen. */
     struct diyac_view *toplevel = wl_container_of(listener, toplevel, map);
     if (toplevel->mapped)
     {
         return;
     }
+    diyac_init_foreign_toplevel(toplevel);
     /*
     wlr_xdg_toplevel_set_wm_capabilities(toplevel->xdg_toplevel,
                         WLR_XDG_TOPLEVEL_WM_CAPABILITIES_MAXIMIZE |
@@ -84,9 +102,6 @@ static void xdg_toplevel_map(struct wl_listener *listener, void *data)
     wlr_xdg_surface_get_geometry(toplevel->xdg_toplevel->base, &toplevel->pending_size);
     wlr_scene_node_set_enabled(&toplevel->scene_tree->node, true);
     toplevel->mapped = true;
-    wl_list_insert(&toplevel->server->views, &toplevel->link);
-    toplevel->commit.notify = xdg_toplevel_commit;
-    wl_signal_add(&toplevel->xdg_surface->surface->events.commit, &toplevel->commit);
 
     diyac_view_update_app_id(toplevel);
     diyac_view_update_title(toplevel);
@@ -106,6 +121,7 @@ static void xdg_toplevel_map(struct wl_listener *listener, void *data)
 
 static void xdg_toplevel_unmap(struct wl_listener *listener, void *data)
 {
+    (void)data;
     /* Called when the surface is unmapped, and should no longer be shown. */
     struct diyac_view *toplevel = wl_container_of(listener, toplevel, unmap);
     toplevel->mapped = false;
@@ -144,6 +160,7 @@ static void xdg_toplevel_unmap(struct wl_listener *listener, void *data)
 static void xdg_toplevel_request_move(
     struct wl_listener *listener, void *data)
 {
+    (void)data;
     /* This event is raised when a client would like to begin an interactive
      * move, typically because the user clicked on their client-side
      * decorations. Note that a more sophisticated compositor should check the
@@ -170,6 +187,7 @@ static void xdg_toplevel_request_resize(
 static void xdg_toplevel_request_maximize(
     struct wl_listener *listener, void *data)
 {
+    (void)data;
     /* This event is raised when a client would like to maximize itself,
      * typically because the user clicked on the maximize button on
      * client-side decorations. diyac doesn't support maximization, but
@@ -183,6 +201,7 @@ static void xdg_toplevel_request_maximize(
 
 static void xdg_toplevel_request_fullscreen(struct wl_listener *listener, void *data)
 {
+    (void)data;
     struct diyac_view *toplevel =
         wl_container_of(listener, toplevel, request_fullscreen);
     diyac_view_set_fullscreen(toplevel, toplevel->xdg_toplevel->requested.fullscreen);
@@ -190,6 +209,7 @@ static void xdg_toplevel_request_fullscreen(struct wl_listener *listener, void *
 
 static void xdg_toplevel_request_minimize(struct wl_listener *listener, void *data)
 {
+    (void)data;
     struct diyac_view *toplevel =
         wl_container_of(listener, toplevel, request_minimize);
     diyac_view_set_mimimize(toplevel, toplevel->xdg_toplevel->requested.minimized);
@@ -197,6 +217,7 @@ static void xdg_toplevel_request_minimize(struct wl_listener *listener, void *da
 
 static void xdg_toplevel_destroy(struct wl_listener *listener, void *data)
 {
+    (void)data;
     /* Called when the xdg_toplevel is destroyed. */
     struct diyac_view *toplevel = wl_container_of(listener, toplevel, destroy);
     if (toplevel->toplevel.handle)
@@ -208,7 +229,7 @@ static void xdg_toplevel_destroy(struct wl_listener *listener, void *data)
         wl_event_source_remove(toplevel->configuration_timeout);
         toplevel->configuration_timeout = NULL;
     }
-    if(toplevel->mapped)
+    if (toplevel->mapped)
     {
         wl_list_remove(&toplevel->commit.link);
     }
@@ -229,6 +250,7 @@ static void xdg_toplevel_destroy(struct wl_listener *listener, void *data)
 
 static void handle_xdg_popup_destroy(struct wl_listener *listener, void *data)
 {
+    (void)data;
     struct diyac_popup *popup = wl_container_of(listener, popup, destroy);
     wl_list_remove(&popup->destroy.link);
     wl_list_remove(&popup->new_popup.link);
@@ -244,13 +266,13 @@ static void handle_xdg_popup_destroy(struct wl_listener *listener, void *data)
 static void popup_unconstrain(struct diyac_popup *popup)
 {
     struct diyac_view *view = popup->parent;
-    if(!view->output)
+    if (!view->output)
     {
         return;
     }
-    struct diyac_server *server = view->server;
-    struct wlr_output_layout *output_layout = server->output_layout;
-    struct wlr_output *wlr_output = view->output->wlr_output;
+    // struct diyac_server *server = view->server;
+    //struct wlr_output_layout *output_layout = server->output_layout;
+    //struct wlr_output *wlr_output = view->output->wlr_output;
     struct wlr_box usable = {
         .x = 0,
         .y = 0,
@@ -273,6 +295,7 @@ static void popup_unconstrain(struct diyac_popup *popup)
 
 static void handle_xdg_popup_commit(struct wl_listener *listener, void *data)
 {
+    (void)data;
     struct diyac_popup *popup = wl_container_of(listener, popup, commit);
     struct wlr_box popup_box;
     wlr_xdg_surface_get_geometry(popup->wlr_popup->base, &popup_box);
@@ -280,7 +303,7 @@ static void handle_xdg_popup_commit(struct wl_listener *listener, void *data)
     if (!wlr_box_empty(&popup_box))
     // if (popup->wlr_popup->base->initial_commit)
     {
-        struct diyac_view *view = popup->parent;
+        // struct diyac_view *view = popup->parent;
         // wlr_output_commit(view->output->wlr_output);
         /* Prevent getting called over and over again */
         wl_list_remove(&popup->commit.link);
@@ -352,12 +375,14 @@ static void xdg_popup_create(struct diyac_view *view, struct wlr_xdg_popup *wlr_
 
 static void xdg_set_appid_notify(struct wl_listener *listener, void *data)
 {
+    (void)data;
     struct diyac_view *view = wl_container_of(listener, view, set_app_id);
     diyac_view_update_app_id(view);
 }
 
 static void xdg_set_title_notify(struct wl_listener *listener, void *data)
 {
+    (void)data;
     struct diyac_view *view = wl_container_of(listener, view, set_title);
     diyac_view_update_title(view);
 }
@@ -370,31 +395,15 @@ static void xdg_new_popup_notify(struct wl_listener *listener, void *data)
     xdg_popup_create(view, wlr_popup);
 }
 
-void diyac_new_xdg_surface(struct wl_listener *listener, void *data)
+void diyac_new_xdg_toplevel(struct wl_listener *listener, void *data)
 {
     /* This event is raised when wlr_xdg_shell receives a new xdg surface from a
      * client, either a toplevel (application window) or popup. */
     struct diyac_server *server =
-        wl_container_of(listener, server, new_xdg_surface);
-    struct wlr_xdg_surface *xdg_surface = data;
+        wl_container_of(listener, server, new_xdg_toplevel);
+    struct wlr_xdg_toplevel *xdg_toplevel = data;
+    struct wlr_xdg_surface *xdg_surface = xdg_toplevel->base;
 
-    /* We must add xdg popups to the scene graph so they get rendered. The
-     * wlroots scene graph provides a helper for this, but to use it we must
-     * provide the proper parent scene node of the xdg popup. To enable this,
-     * we always set the user data field of xdg_surfaces to the corresponding
-     * scene node. */
-    if (xdg_surface->role == WLR_XDG_SURFACE_ROLE_POPUP)
-    {
-        /*struct wlr_xdg_surface *parent =
-            wlr_xdg_surface_try_from_wlr_surface(xdg_surface->popup->parent);
-        assert(parent != NULL);
-        struct wlr_scene_tree *parent_tree = parent->data;
-        xdg_surface->data = wlr_scene_xdg_surface_create(
-            parent_tree, xdg_surface);
-        return;*/
-        wlr_log(WLR_INFO, "diyac_new_xdg_surface: Creating new dialog using  view popup");
-        return;
-    }
     assert(xdg_surface->role == WLR_XDG_SURFACE_ROLE_TOPLEVEL);
     wlr_log(WLR_INFO, "diyac_new_xdg_surface: Creating new application windows");
     wlr_xdg_surface_ping(xdg_surface);
@@ -421,7 +430,6 @@ void diyac_new_xdg_surface(struct wl_listener *listener, void *data)
     wlr_scene_node_set_enabled(&toplevel->scene_tree->node, false);
     diyac_node_descriptor_create(&toplevel->scene_tree->node,
                                  DIYAC_NODE_VIEW, toplevel);
-    diyac_init_foreign_toplevel(toplevel);
 
     /* Listen to the various events it can emit */
     toplevel->map.notify = xdg_toplevel_map;
@@ -432,7 +440,6 @@ void diyac_new_xdg_surface(struct wl_listener *listener, void *data)
     wl_signal_add(&xdg_surface->events.destroy, &toplevel->destroy);
 
     /* cotd */
-    struct wlr_xdg_toplevel *xdg_toplevel = xdg_surface->toplevel;
     toplevel->request_move.notify = xdg_toplevel_request_move;
     wl_signal_add(&xdg_toplevel->events.request_move, &toplevel->request_move);
     toplevel->request_resize.notify = xdg_toplevel_request_resize;
@@ -453,4 +460,9 @@ void diyac_new_xdg_surface(struct wl_listener *listener, void *data)
 
     toplevel->set_title.notify = xdg_set_title_notify;
     wl_signal_add(&xdg_toplevel->events.set_title, &toplevel->set_title);
+
+    toplevel->commit.notify = xdg_toplevel_commit;
+    wl_signal_add(&toplevel->xdg_surface->surface->events.commit, &toplevel->commit);
+
+    wl_list_insert(&toplevel->server->views, &toplevel->link);
 }

xdg.h

@@ -2,5 +2,5 @@
 #define DIYAC_XDG_H
 #include "diyac.h"
 
-void diyac_new_xdg_surface(struct wl_listener *listener, void *data);
+void diyac_new_xdg_toplevel(struct wl_listener *listener, void *data);
 #endif