Fix crash disabling monitor with locked surface

(cherry picked from commit d1880b4422)

.mailmap

@@ -1,3 +1 @@
 Lennart Jablonka <humm@ljabl.com> <hummsmith42@gmail.com>
-Leonardo Hernández Hernández <leohdz172@proton.me> <leohdz172@outlook.com>
-Leonardo Hernández Hernández <leohdz172@proton.me> <leohdz172@protonmail.com>

CHANGELOG.md

@@ -8,15 +8,6 @@
 
 ## Unreleased
 ### Added
-
-* Support for the linux-drm-syncobj-v1 protocol ([wlroots!4715][wlroots!4715], [#685][685])
-* Allow the use of non-system wlroots library ([#646][646])
-
-[wlroots!4715]: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/4715
-[685]: https://codeberg.org/dwl/dwl/pulls/685
-[646]: https://codeberg.org/dwl/dwl/pulls/646
-
-
 ### Changed
 ### Deprecated
 ### Removed
@@ -30,7 +21,7 @@
 
 ## 0.7
 
-This version is just 0.6 with wlroots 0.18 compatibility.
+See also [0.6](#0.6) release notes. 0.7 builds against wlroots 0.18.x.
 
 ### Added
 
@@ -41,9 +32,15 @@ This version is just 0.6 with wlroots 0.18 compatibility.
 [601]: https://codeberg.org/dwl/dwl/issues/601
 
 
+### Fixed
+
+* Crash when re-mapping unmapped clients.
+
+
 ### Contributors
 
 Guido Cella
+Lennart Jablonka
 
 
 ## 0.6

Makefile

@@ -6,15 +6,15 @@ include config.mk
 # flags for compiling
 DWLCPPFLAGS = -I. -DWLR_USE_UNSTABLE -D_POSIX_C_SOURCE=200809L \
 	-DVERSION=\"$(VERSION)\" $(XWAYLAND)
-DWLDEVCFLAGS = -g -Wpedantic -Wall -Wextra -Wdeclaration-after-statement \
+DWLDEVCFLAGS = -g -pedantic -Wall -Wextra -Wdeclaration-after-statement \
 	-Wno-unused-parameter -Wshadow -Wunused-macros -Werror=strict-prototypes \
 	-Werror=implicit -Werror=return-type -Werror=incompatible-pointer-types \
 	-Wfloat-conversion
 
 # CFLAGS / LDFLAGS
-PKGS      = wayland-server xkbcommon libinput $(XLIBS)
+PKGS      = wlroots-0.18 wayland-server xkbcommon libinput $(XLIBS)
-DWLCFLAGS = `$(PKG_CONFIG) --cflags $(PKGS)` $(WLR_INCS) $(DWLCPPFLAGS) $(DWLDEVCFLAGS) $(CFLAGS)
+DWLCFLAGS = `$(PKG_CONFIG) --cflags $(PKGS)` $(DWLCPPFLAGS) $(DWLDEVCFLAGS) $(CFLAGS)
-LDLIBS    = `$(PKG_CONFIG) --libs $(PKGS)` $(WLR_LIBS) -lm $(LIBS)
+LDLIBS    = `$(PKG_CONFIG) --libs $(PKGS)` -lm $(LIBS)
 
 all: dwl
 dwl: dwl.o util.o

README.md

@@ -1,12 +1,12 @@
 # dwl - dwm for Wayland
 
 Join us on our IRC channel: [#dwl on Libera Chat]  
-Or on the community-maintained [Discord server].
+Or on our [Discord server].
 
 dwl is a compact, hackable compositor for [Wayland] based on [wlroots]. It is
-intended to fill the same space in the Wayland world that [dwm] does in X11,
+intended to fill the same space in the Wayland world that dwm does in X11,
 primarily in terms of functionality, and secondarily in terms of
-philosophy. Like [dwm], dwl is:
+philosophy. Like dwm, dwl is:
 
 - Easy to understand, hack on, and extend with patches
 - One C source file (or a very small number) configurable via `config.h`
@@ -14,12 +14,13 @@ philosophy. Like [dwm], dwl is:
 
 ## Getting Started:
 
+### **dwl branch 0.7 and releases based upon 0.7 build against [wlroots] 0.18**
+
 ### Latest semi-stable [release]
-This is probably where you want to start. This builds against the [wlroots]
+This is probably where you want to start. This builds against the dependent
-versions currently shipping in major distributions. If your
+packages' versions currently shipping in major distributions. If your
-distribution's `wlroots` version is older, use an earlier dwl [release].
+distribution's wlroots version is older, use an earlier dwl [release] or [0.x
-The `wlroots` version against which a given `dwl` release builds is specified
+branch].
-with each release on the [release] page
 
 ### Development branch [main]
 Active development progresses on the `main` branch. The `main` branch is built
@@ -55,11 +56,11 @@ To enable XWayland, you should uncomment its flags in `config.mk`.
 ## Configuration
 
 All configuration is done by editing `config.h` and recompiling, in the same
-manner as [dwm]. There is no way to separately restart the window manager in
+manner as dwm. There is no way to separately restart the window manager in
 Wayland without restarting the entire display server, so any changes will take
 effect the next time dwl is executed.
 
-As in the [dwm] community, we encourage users to share patches they have
+As in the dwm community, we encourage users to share patches they have
 created. Check out the [dwl-patches] repository!
 
 ## Running dwl
@@ -75,7 +76,7 @@ seatd daemon.
 When dwl is run with no arguments, it will launch the server and begin handling
 any shortcuts configured in `config.h`. There is no status bar or other
 decoration initially; these are instead clients that can be run within the
-Wayland session. Do note that the default background color is grey. This can be
+Wayland session. Do note that the default background color is black. This can be
 modified in `config.h`.
 
 If you would like to run a script or command automatically at startup, you can
@@ -103,7 +104,7 @@ automatically, you will need to configure it prior to launching `dwl`, e.g.:
 
 Information about selected layouts, current window title, app-id, and
 selected/occupied/urgent tags is written to the stdin of the `-s` command (see
-the `STATUS INFORMATION` section in `_dwl_(1)`).  This information can be used to
+the `printstatus()` function for details).  This information can be used to
 populate an external status bar with a script that parses the
 information. Failing to read this information will cause dwl to block, so if you
 do want to run a startup command that does not consume the status information,
@@ -118,26 +119,17 @@ script with the line
 
 To get a list of status bars that work with dwl consult our [wiki].
 
-### (Known) Java nonreparenting WM issue
-Certain IDEs don't display correctly unless an environmental variable for Java AWT
-indicates that the WM is nonreparenting.
-
-For some Java AWT-based IDEs, such as Xilinx Vivado and Microchip MPLAB X, the
-following environment variable needs to be set before running the IDE or dwl:
-
-    export _JAVA_AWT_WM_NONREPARENTING=1
-
 ## Replacements for X applications
 
 You can find a [list of useful resources on our wiki].
 
 ## Background
 
-dwl is not meant to provide every feature under the sun. Instead, like [dwm], it
+dwl is not meant to provide every feature under the sun. Instead, like dwm, it
 sticks to features which are necessary, simple, and straightforward to implement
 given the base on which it is built. Implemented default features are:
 
-- Any features provided by [dwm]/Xlib: simple window borders, tags, keybindings,
+- Any features provided by dwm/Xlib: simple window borders, tags, keybindings,
   client rules, mouse move/resize. Providing a built-in status bar is an
   exception to this goal, to avoid dependencies on font rendering and/or drawing
   libraries when an external bar could work well.
@@ -154,10 +146,10 @@ given the base on which it is built. Implemented default features are:
 - Layer shell popups (used by Waybar)
 - Damage tracking provided by scenegraph API
 
-Given the Wayland architecture, dwl has to implement features from [dwm] **and**
+Given the Wayland architecture, dwl has to implement features from dwm **and**
 the xorg-server. Because of this, it is impossible to maintain the original
 project goal of 2000 SLOC and have a reasonably complete compositor with
-features comparable to [dwm]. However, this does not mean that the code will grow
+features comparable to dwm. However, this does not mean that the code will grow
 indiscriminately. We will try to keep the code as small as possible.
 
 Features under consideration (possibly as patches) are:
@@ -181,7 +173,7 @@ developers. This was made possible in many cases by looking at how sway
 accomplished something, then trying to do the same in as suckless a way as
 possible.
 
-Many thanks to suckless.org and the [dwm] developers and community for the
+Many thanks to suckless.org and the dwm developers and community for the
 inspiration, and to the various contributors to the project, including:
 
 - **Devin J. Pohly for creating and nurturing the fledgling project**
@@ -191,8 +183,6 @@ inspiration, and to the various contributors to the project, including:
 - Stivvo for output management and fullscreen support, and patch maintenance
 
 
-[wlroots]: https://gitlab.freedesktop.org/wlroots
-[dwm]: https://dwm.suckless.org/
 [`systemd --user`]: https://wiki.archlinux.org/title/Systemd/User
 [#dwl on Libera Chat]: https://web.libera.chat/?channels=#dwl
 [0.7-rc1]: https://codeberg.org/dwl/dwl/releases/tag/v0.7-rc1

client.h

@@ -126,14 +126,15 @@ client_get_appid(Client *c)
 {
 #ifdef XWAYLAND
 	if (client_is_x11(c))
-		return c->surface.xwayland->class ? c->surface.xwayland->class : "broken";
+		return c->surface.xwayland->class;
 #endif
-	return c->surface.xdg->toplevel->app_id ? c->surface.xdg->toplevel->app_id : "broken";
+	return c->surface.xdg->toplevel->app_id;
 }
 
 static inline void
 client_get_clip(Client *c, struct wlr_box *clip)
 {
+	struct wlr_box xdg_geom = {0};
 	*clip = (struct wlr_box){
 		.x = 0,
 		.y = 0,
@@ -146,8 +147,9 @@ client_get_clip(Client *c, struct wlr_box *clip)
 		return;
 #endif
 
-	clip->x = c->surface.xdg->geometry.x;
+	wlr_xdg_surface_get_geometry(c->surface.xdg, &xdg_geom);
-	clip->y = c->surface.xdg->geometry.y;
+	clip->x = xdg_geom.x;
+	clip->y = xdg_geom.y;
 }
 
 static inline void
@@ -162,7 +164,7 @@ client_get_geometry(Client *c, struct wlr_box *geom)
 		return;
 	}
 #endif
-	*geom = c->surface.xdg->geometry;
+	wlr_xdg_surface_get_geometry(c->surface.xdg, geom);
 }
 
 static inline Client *
@@ -198,9 +200,9 @@ client_get_title(Client *c)
 {
 #ifdef XWAYLAND
 	if (client_is_x11(c))
-		return c->surface.xwayland->title ? c->surface.xwayland->title : "broken";
+		return c->surface.xwayland->title;
 #endif
-	return c->surface.xdg->toplevel->title ? c->surface.xdg->toplevel->title : "broken";
+	return c->surface.xdg->toplevel->title;
 }
 
 static inline int
@@ -213,15 +215,16 @@ client_is_float_type(Client *c)
 	if (client_is_x11(c)) {
 		struct wlr_xwayland_surface *surface = c->surface.xwayland;
 		xcb_size_hints_t *size_hints = surface->size_hints;
+		size_t i;
 		if (surface->modal)
 			return 1;
 
-		if (wlr_xwayland_surface_has_window_type(surface, WLR_XWAYLAND_NET_WM_WINDOW_TYPE_DIALOG)
+		for (i = 0; i < surface->window_type_len; i++)
-				|| wlr_xwayland_surface_has_window_type(surface, WLR_XWAYLAND_NET_WM_WINDOW_TYPE_SPLASH)
+			if (surface->window_type[i] == netatom[NetWMWindowTypeDialog]
-				|| wlr_xwayland_surface_has_window_type(surface, WLR_XWAYLAND_NET_WM_WINDOW_TYPE_TOOLBAR)
+					|| surface->window_type[i] == netatom[NetWMWindowTypeSplash]
-				|| wlr_xwayland_surface_has_window_type(surface, WLR_XWAYLAND_NET_WM_WINDOW_TYPE_UTILITY)) {
+					|| surface->window_type[i] == netatom[NetWMWindowTypeToolbar]
+					|| surface->window_type[i] == netatom[NetWMWindowTypeUtility])
 				return 1;
-		}
 
 		return size_hints && size_hints->min_width > 0 && size_hints->min_height > 0
 			&& (size_hints->max_width == size_hints->min_width
@@ -264,8 +267,8 @@ client_is_stopped(Client *c)
 
 	wl_client_get_credentials(c->surface.xdg->client->client, &pid, NULL, NULL);
 	if (waitid(P_PID, pid, &in, WNOHANG|WCONTINUED|WSTOPPED|WNOWAIT) < 0) {
-		/* This process is not our child process, while is very unlikely that
+		/* This process is not our child process, while is very unluckely that
-		 * it is stopped, in order to do not skip frames, assume that it is. */
+		 * it is stopped, in order to do not skip frames assume that it is. */
 		if (errno == ECHILD)
 			return 1;
 	} else if (in.si_pid) {
@@ -298,6 +301,17 @@ client_notify_enter(struct wlr_surface *s, struct wlr_keyboard *kb)
 		wlr_seat_keyboard_notify_enter(seat, s, NULL, 0, NULL);
 }
 
+static inline void
+client_restack_surface(Client *c)
+{
+#ifdef XWAYLAND
+	if (client_is_x11(c))
+		wlr_xwayland_surface_restack(c->surface.xwayland, NULL,
+				XCB_STACK_MODE_ABOVE);
+#endif
+	return;
+}
+
 static inline void
 client_send_close(Client *c)
 {
@@ -330,13 +344,6 @@ client_set_fullscreen(Client *c, int fullscreen)
 	wlr_xdg_toplevel_set_fullscreen(c->surface.xdg->toplevel, fullscreen);
 }
 
-static inline void
-client_set_scale(struct wlr_surface *s, float scale)
-{
-	wlr_fractional_scale_v1_notify_scale(s, scale);
-	wlr_surface_set_preferred_buffer_scale(s, (int32_t)ceilf(scale));
-}
-
 static inline uint32_t
 client_set_size(Client *c, uint32_t width, uint32_t height)
 {
@@ -357,11 +364,8 @@ static inline void
 client_set_tiled(Client *c, uint32_t edges)
 {
 #ifdef XWAYLAND
-	if (client_is_x11(c)) {
+	if (client_is_x11(c))
-		wlr_xwayland_surface_set_maximized(c->surface.xwayland,
-				edges != WLR_EDGE_NONE, edges != WLR_EDGE_NONE);
 		return;
-  }
 #endif
 	if (wl_resource_get_version(c->surface.xdg->toplevel->resource)
 			>= XDG_TOPLEVEL_STATE_TILED_RIGHT_SINCE_VERSION) {
@@ -387,8 +391,8 @@ client_wants_focus(Client *c)
 {
 #ifdef XWAYLAND
 	return client_is_unmanaged(c)
-		&& wlr_xwayland_surface_override_redirect_wants_focus(c->surface.xwayland)
+		&& wlr_xwayland_or_surface_wants_focus(c->surface.xwayland)
-		&& wlr_xwayland_surface_icccm_input_model(c->surface.xwayland) != WLR_ICCCM_INPUT_MODEL_NONE;
+		&& wlr_xwayland_icccm_input_model(c->surface.xwayland) != WLR_ICCCM_INPUT_MODEL_NONE;
 #endif
 	return 0;
 }

config.def.h

@@ -12,7 +12,7 @@ static const float bordercolor[]           = COLOR(0x444444ff);
 static const float focuscolor[]            = COLOR(0x005577ff);
 static const float urgentcolor[]           = COLOR(0xff0000ff);
 /* This conforms to the xdg-protocol. Set the alpha to zero to restore the old behavior */
-static const float fullscreen_bg[]         = {0.0f, 0.0f, 0.0f, 1.0f}; /* You can also use glsl colors */
+static const float fullscreen_bg[]         = {0.1f, 0.1f, 0.1f, 1.0f}; /* You can also use glsl colors */
 
 /* tagging - TAGCOUNT must be no greater than 31 */
 #define TAGCOUNT (9)
@@ -20,11 +20,12 @@ static const float fullscreen_bg[]         = {0.0f, 0.0f, 0.0f, 1.0f}; /* You ca
 /* logging */
 static int log_level = WLR_ERROR;
 
+/* NOTE: ALWAYS keep a rule declared even if you don't use rules (e.g leave at least one example) */
 static const Rule rules[] = {
 	/* app_id             title       tags mask     isfloating   monitor */
+	/* examples: */
 	{ "Gimp_EXAMPLE",     NULL,       0,            1,           -1 }, /* Start on currently visible tags floating, not tiled */
 	{ "firefox_EXAMPLE",  NULL,       1 << 8,       0,           -1 }, /* Start on ONLY tag "9" */
-    /* default/example rule: can be changed but cannot be eliminated; at least one rule must exist */
 };
 
 /* layout(s) */
@@ -37,14 +38,17 @@ static const Layout layouts[] = {
 
 /* monitors */
 /* (x=-1, y=-1) is reserved as an "autoconfigure" monitor position indicator
- * WARNING: negative values other than (-1, -1) cause problems with Xwayland clients due to
+ * WARNING: negative values other than (-1, -1) cause problems with Xwayland clients
- * https://gitlab.freedesktop.org/xorg/xserver/-/issues/899 */
+ * https://gitlab.freedesktop.org/xorg/xserver/-/issues/899
+*/
+/* NOTE: ALWAYS add a fallback rule, even if you are completely sure it won't be used */
 static const MonitorRule monrules[] = {
-   /* name        mfact  nmaster scale layout       rotate/reflect                x    y
+	/* name       mfact  nmaster scale layout       rotate/reflect                x    y */
-    * example of a HiDPI laptop monitor:
+	/* example of a HiDPI laptop monitor:
-    { "eDP-1",    0.5f,  1,      2,    &layouts[0], WL_OUTPUT_TRANSFORM_NORMAL,   -1,  -1 }, */
+	{ "eDP-1",    0.5f,  1,      2,    &layouts[0], WL_OUTPUT_TRANSFORM_NORMAL,   -1,  -1 },
+	*/
+	/* defaults */
 	{ NULL,       0.55f, 1,      1,    &layouts[0], WL_OUTPUT_TRANSFORM_NORMAL,   -1,  -1 },
-	/* default monitor rule: can be changed but cannot be eliminated; at least one monitor rule must exist */
 };
 
 /* keyboard */
@@ -119,7 +123,7 @@ static const char *termcmd[] = { "foot", NULL };
 static const char *menucmd[] = { "wmenu-run", NULL };
 
 static const Key keys[] = {
-	/* Note that Shift changes certain key codes: 2 -> at, etc. */
+	/* Note that Shift changes certain key codes: c -> C, 2 -> at, etc. */
 	/* modifier                  key                 function        argument */
 	{ MODKEY,                    XKB_KEY_p,          spawn,          {.v = menucmd} },
 	{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_Return,     spawn,          {.v = termcmd} },
@@ -131,7 +135,7 @@ static const Key keys[] = {
 	{ MODKEY,                    XKB_KEY_l,          setmfact,       {.f = +0.05f} },
 	{ MODKEY,                    XKB_KEY_Return,     zoom,           {0} },
 	{ MODKEY,                    XKB_KEY_Tab,        view,           {0} },
-	{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_c,           killclient,       {0} },
+	{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_C,          killclient,     {0} },
 	{ MODKEY,                    XKB_KEY_t,          setlayout,      {.v = &layouts[0]} },
 	{ MODKEY,                    XKB_KEY_f,          setlayout,      {.v = &layouts[1]} },
 	{ MODKEY,                    XKB_KEY_m,          setlayout,      {.v = &layouts[2]} },
@@ -153,7 +157,7 @@ static const Key keys[] = {
 	TAGKEYS(          XKB_KEY_7, XKB_KEY_ampersand,                  6),
 	TAGKEYS(          XKB_KEY_8, XKB_KEY_asterisk,                   7),
 	TAGKEYS(          XKB_KEY_9, XKB_KEY_parenleft,                  8),
-	{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_q,           quit,             {0} },
+	{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_Q,          quit,           {0} },
 
 	/* Ctrl-Alt-Backspace and Ctrl-Alt-Fx used to be handled by X server */
 	{ WLR_MODIFIER_CTRL|WLR_MODIFIER_ALT,XKB_KEY_Terminate_Server, quit, {0} },

config.mk

@@ -1,4 +1,4 @@
-_VERSION = 0.8-dev
+_VERSION = 0.7
 VERSION  = `git describe --tags --dirty 2>/dev/null || echo $(_VERSION)`
 
 PKG_CONFIG = pkg-config
@@ -8,29 +8,10 @@ PREFIX = /usr/local
 MANDIR = $(PREFIX)/share/man
 DATADIR = $(PREFIX)/share
 
-WLR_INCS = `$(PKG_CONFIG) --cflags wlroots-0.19`
-WLR_LIBS = `$(PKG_CONFIG) --libs wlroots-0.19`
-
-# Allow using an alternative wlroots installation
-# This has to have all the includes required by wlroots, e.g:
-# Assuming wlroots git repo is "${PWD}/wlroots" and you only ran "meson setup build && ninja -C build"
-#WLR_INCS = -I/usr/include/pixman-1 -I/usr/include/elogind -I/usr/include/libdrm \
-#	-I$(PWD)/wlroots/include
-# Set -rpath to avoid using the wrong library.
-#WLR_LIBS = -Wl,-rpath,$(PWD)/wlroots/build -L$(PWD)/wlroots/build -lwlroots-0.19
-
-# Assuming you ran "meson setup --prefix ${PWD}/0.19 build && ninja -C build install"
-#WLR_INCS = -I/usr/include/pixman-1 -I/usr/include/elogind -I/usr/include/libdrm \
-#	-I$(PWD)/wlroots/0.19/include/wlroots-0.19
-#WLR_LIBS = -Wl,-rpath,$(PWD)/wlroots/0.19/lib64 -L$(PWD)/wlroots/0.19/lib64 -lwlroots-0.19
-
 XWAYLAND =
 XLIBS =
 # Uncomment to build XWayland support
 #XWAYLAND = -DXWAYLAND
 #XLIBS = xcb xcb-icccm
 
-# dwl itself only uses C99 features, but wlroots' headers use anonymous unions (C11).
+CC = gcc
-# To avoid warnings about them, we do not use -std=c99 and instead of using the
-# gmake default 'CC=c99', we use cc.
-CC = cc

dwl.1

@@ -37,7 +37,7 @@ starts a shell process running
 when starting.
 When stopping, it sends
 .Dv SIGTERM
-to the child process group and waits for it to exit.
+to the child process and waits for it to exit.
 .Pp
 Users are encouraged to customize
 .Nm
@@ -55,10 +55,10 @@ Move window to a single tag.
 Toggle tag for window.
 .It Mod-p
 Spawn
-.Xr wmenu-run 1 .
+.Nm wmenu-run .
 .It Mod-Shift-Return
 Spawn
-.Xr foot 1 .
+.Nm foot .
 .It Mod-[jk]
 Move focus down/up the stack.
 .It Mod-[id]
@@ -100,114 +100,6 @@ Quit
 .Nm .
 .El
 These might differ depending on your keyboard layout.
-.Ss Mouse commands
-.Bl -tag -width 20n -offset indent -compact
-.It Mod-Button1
-Move focused window while dragging.
-Tiled windows will be toggled to the floating state.
-.It Mod-Button2
-Toggle focused window between floating and tiled state.
-.It Mod-Button3
-Resize focused window while dragging.
-Tiled windows will be toggled to the floating state.
-.El
-.Sh STATUS INFORMATION
-.Nm
-writes its status information to standard output.
-If the
-.Fl s
-option is given, the status information is written to the standard input of the
-child process instead.
-.Pp
-Said information has the following format:
-.Bd -ragged -offset indent
-.Ar <monitor>
-.Ar <component>
-.Ar <data>
-.Ed
-.Pp
-.Bl -tag -width 11n -offset 0 -compact
-.It Ar <monitor>
-is the name given to the output.
-.It Ar <component>
-is one of (in order)
-.Em title ,
-.Em appid ,
-.Em fullscreen ,
-.Em floating ,
-.Em selmon ,
-.Em tags ,
-.Em layout .
-.It Ar <data>
-changes depending on
-.Ar <component> .
-.Bl -tag -width 10n -compact
-.It Em title
-The title of the focused window on
-.Ar <monitor>
-or nothing if there is no focused window.
-.It Em appid
-The app_id of the focused window on
-.Ar <monitor>
-or nothing if there is no focused window.
-.It Em fullscreen
-Prints 1 if the focused window on
-.Ar <monitor>
-is in fullscreen state, otherwise prints 0. If there is no focused
-window it prints nothing.
-.It Em floating
-Prints 1 if the focused window on
-.Ar <monitor>
-is in floating state, otherwise prints 0. If there is no focused
-window it prints nothing.
-.It Em selmon
-Prints 1 if
-.Ar <monitor>
-is the selected monitor, otherwise prints 0.
-.It Em tags
-Prints four bitmasks in the following order:
-.Bl -bullet -width 2n -compact
-.It
-Occupied tags of
-.Ar <monitor> .
-.It
-Selected tags of
-.Ar <monitor> .
-.It
-Tags of the focused window on
-.Ar <monitor> .
-.It
-Tags where a window on
-.Ar <monitor>
-requested activation or has urgency hints.
-.El
-The bitmasks are 32-bit unsigned decimal integers.
-.It Em layout
-Prints the symbol of the current layout.
-.El
-.El
-.Ss Examples
-When there is a selected window:
-.Bd -literal -offset indent
-HDMI\-A\-1 title \(ti/source/repos/dwl > man \-l dwl.1
-HDMI\-A\-1 appid footclient
-HDMI\-A\-1 fullscreen 0
-HDMI\-A\-1 floating 0
-HDMI\-A\-1 selmon 1
-HDMI\-A\-1 tags 271 4 4 0
-HDMI\-A\-1 layout [T]
-.Ed
-.Pp
-When there is no selected window:
-.Bd -literal -offset indent
-HDMI\-A\-1 title
-HDMI\-A\-1 appid
-HDMI\-A\-1 fullscreen
-HDMI\-A\-1 floating
-HDMI\-A\-1 selmon 1
-HDMI\-A\-1 tags 271 512 0 0
-HDMI\-A\-1 layout [T]
-.Ed
 .Sh ENVIRONMENT
 These environment variables are used by
 .Nm :
@@ -250,9 +142,17 @@ Start
 with s6 in the background:
 .Dl dwl \-s \(aqs6\-svscan <&\-\(aq
 .Sh SEE ALSO
-.Xr dwm 1 ,
 .Xr foot 1 ,
 .Xr wmenu 1 ,
+.Xr dwm 1 ,
 .Xr xkeyboard-config 7
+.Sh CAVEATS
+The child process's standard input is connected with a pipe to
+.Nm .
+If the child process neither reads from the pipe nor closes its
+standard input,
+.Nm
+will freeze after a while due to it blocking when writing to the full
+pipe buffer.
 .Sh BUGS
 All of them.

dwl.c

@@ -33,7 +33,6 @@
 #include <wlr/types/wlr_keyboard_group.h>
 #include <wlr/types/wlr_layer_shell_v1.h>
 #include <wlr/types/wlr_linux_dmabuf_v1.h>
-#include <wlr/types/wlr_linux_drm_syncobj_v1.h>
 #include <wlr/types/wlr_output.h>
 #include <wlr/types/wlr_output_layout.h>
 #include <wlr/types/wlr_output_management_v1.h>
@@ -79,12 +78,16 @@
 #define END(A)                  ((A) + LENGTH(A))
 #define TAGMASK                 ((1u << TAGCOUNT) - 1)
 #define LISTEN(E, L, H)         wl_signal_add((E), ((L)->notify = (H), (L)))
-#define LISTEN_STATIC(E, H)     do { struct wl_listener *_l = ecalloc(1, sizeof(*_l)); _l->notify = (H); wl_signal_add((E), _l); } while (0)
+#define LISTEN_STATIC(E, H)     do { static struct wl_listener _l = {.notify = (H)}; wl_signal_add((E), &_l); } while (0)
 
 /* enums */
 enum { CurNormal, CurPressed, CurMove, CurResize }; /* cursor */
 enum { XDGShell, LayerShell, X11 }; /* client types */
 enum { LyrBg, LyrBottom, LyrTile, LyrFloat, LyrTop, LyrFS, LyrOverlay, LyrBlock, NUM_LAYERS }; /* scene layers */
+#ifdef XWAYLAND
+enum { NetWMWindowTypeDialog, NetWMWindowTypeSplash, NetWMWindowTypeToolbar,
+	NetWMWindowTypeUtility, NetLast }; /* EWMH atoms */
+#endif
 
 typedef union {
 	int i;
@@ -102,18 +105,15 @@ typedef struct {
 
 typedef struct Monitor Monitor;
 typedef struct {
-	/* Must keep this field first */
+	/* Must keep these three elements in this order */
 	unsigned int type; /* XDGShell or X11* */
-
+	struct wlr_box geom; /* layout-relative, includes border */
 	Monitor *mon;
 	struct wlr_scene_tree *scene;
 	struct wlr_scene_rect *border[4]; /* top, bottom, left, right */
 	struct wlr_scene_tree *scene_surface;
 	struct wl_list link;
 	struct wl_list flink;
-	struct wlr_box geom; /* layout-relative, includes border */
-	struct wlr_box prev; /* layout-relative, includes border */
-	struct wlr_box bounds; /* only width and height are used */
 	union {
 		struct wlr_xdg_surface *xdg;
 		struct wlr_xwayland_surface *xwayland;
@@ -128,6 +128,8 @@ typedef struct {
 	struct wl_listener fullscreen;
 	struct wl_listener set_decoration_mode;
 	struct wl_listener destroy_decoration;
+	struct wlr_box prev; /* layout-relative, includes border */
+	struct wlr_box bounds;
 #ifdef XWAYLAND
 	struct wl_listener activate;
 	struct wl_listener associate;
@@ -149,6 +151,7 @@ typedef struct {
 } Key;
 
 typedef struct {
+	struct wl_list link;
 	struct wlr_keyboard_group *wlr_group;
 
 	int nsyms;
@@ -162,9 +165,9 @@ typedef struct {
 } KeyboardGroup;
 
 typedef struct {
-	/* Must keep this field first */
+	/* Must keep these three elements in this order */
 	unsigned int type; /* LayerShell */
-
+	struct wlr_box geom;
 	Monitor *mon;
 	struct wlr_scene_tree *scene;
 	struct wlr_scene_tree *popups;
@@ -252,7 +255,6 @@ static void chvt(const Arg *arg);
 static void checkidleinhibitor(struct wlr_surface *exclude);
 static void cleanup(void);
 static void cleanupmon(struct wl_listener *listener, void *data);
-static void cleanuplisteners(void);
 static void closemon(Monitor *m);
 static void commitlayersurfacenotify(struct wl_listener *listener, void *data);
 static void commitnotify(struct wl_listener *listener, void *data);
@@ -280,6 +282,7 @@ static void destroylocksurface(struct wl_listener *listener, void *data);
 static void destroynotify(struct wl_listener *listener, void *data);
 static void destroypointerconstraint(struct wl_listener *listener, void *data);
 static void destroysessionlock(struct wl_listener *listener, void *data);
+static void destroysessionmgr(struct wl_listener *listener, void *data);
 static void destroykeyboardgroup(struct wl_listener *listener, void *data);
 static Monitor *dirtomon(enum wlr_direction dir);
 static void focusclient(Client *c, int lift);
@@ -323,6 +326,7 @@ static void setcursor(struct wl_listener *listener, void *data);
 static void setcursorshape(struct wl_listener *listener, void *data);
 static void setfloating(Client *c, int floating);
 static void setfullscreen(Client *c, int fullscreen);
+static void setgamma(struct wl_listener *listener, void *data);
 static void setlayout(const Arg *arg);
 static void setmfact(const Arg *arg);
 static void setmon(Client *c, Monitor *m, uint32_t newtags);
@@ -353,6 +357,7 @@ static void xytonode(double x, double y, struct wlr_surface **psurface,
 static void zoom(const Arg *arg);
 
 /* variables */
+static const char broken[] = "broken";
 static pid_t child_pid = -1;
 static int locked;
 static void *exclusive_focus;
@@ -378,6 +383,7 @@ static struct wlr_idle_notifier_v1 *idle_notifier;
 static struct wlr_idle_inhibit_manager_v1 *idle_inhibit_mgr;
 static struct wlr_layer_shell_v1 *layer_shell;
 static struct wlr_output_manager_v1 *output_mgr;
+static struct wlr_gamma_control_manager_v1 *gamma_control_mgr;
 static struct wlr_virtual_keyboard_manager_v1 *virtual_keyboard_mgr;
 static struct wlr_virtual_pointer_manager_v1 *virtual_pointer_mgr;
 static struct wlr_cursor_shape_manager_v1 *cursor_shape_mgr;
@@ -394,6 +400,7 @@ static struct wlr_scene_rect *root_bg;
 static struct wlr_session_lock_manager_v1 *session_lock_mgr;
 static struct wlr_scene_rect *locked_bg;
 static struct wlr_session_lock_v1 *cur_lock;
+static struct wl_listener lock_listener = {.notify = locksession};
 
 static struct wlr_seat *seat;
 static KeyboardGroup *kb_group;
@@ -406,47 +413,17 @@ static struct wlr_box sgeom;
 static struct wl_list mons;
 static Monitor *selmon;
 
-/* global event handlers */
-static struct wl_listener cursor_axis = {.notify = axisnotify};
-static struct wl_listener cursor_button = {.notify = buttonpress};
-static struct wl_listener cursor_frame = {.notify = cursorframe};
-static struct wl_listener cursor_motion = {.notify = motionrelative};
-static struct wl_listener cursor_motion_absolute = {.notify = motionabsolute};
-static struct wl_listener gpu_reset = {.notify = gpureset};
-static struct wl_listener layout_change = {.notify = updatemons};
-static struct wl_listener new_idle_inhibitor = {.notify = createidleinhibitor};
-static struct wl_listener new_input_device = {.notify = inputdevice};
-static struct wl_listener new_virtual_keyboard = {.notify = virtualkeyboard};
-static struct wl_listener new_virtual_pointer = {.notify = virtualpointer};
-static struct wl_listener new_pointer_constraint = {.notify = createpointerconstraint};
-static struct wl_listener new_output = {.notify = createmon};
-static struct wl_listener new_xdg_toplevel = {.notify = createnotify};
-static struct wl_listener new_xdg_popup = {.notify = createpopup};
-static struct wl_listener new_xdg_decoration = {.notify = createdecoration};
-static struct wl_listener new_layer_surface = {.notify = createlayersurface};
-static struct wl_listener output_mgr_apply = {.notify = outputmgrapply};
-static struct wl_listener output_mgr_test = {.notify = outputmgrtest};
-static struct wl_listener output_power_mgr_set_mode = {.notify = powermgrsetmode};
-static struct wl_listener request_activate = {.notify = urgent};
-static struct wl_listener request_cursor = {.notify = setcursor};
-static struct wl_listener request_set_psel = {.notify = setpsel};
-static struct wl_listener request_set_sel = {.notify = setsel};
-static struct wl_listener request_set_cursor_shape = {.notify = setcursorshape};
-static struct wl_listener request_start_drag = {.notify = requeststartdrag};
-static struct wl_listener start_drag = {.notify = startdrag};
-static struct wl_listener new_session_lock = {.notify = locksession};
-
 #ifdef XWAYLAND
 static void activatex11(struct wl_listener *listener, void *data);
 static void associatex11(struct wl_listener *listener, void *data);
 static void configurex11(struct wl_listener *listener, void *data);
 static void createnotifyx11(struct wl_listener *listener, void *data);
 static void dissociatex11(struct wl_listener *listener, void *data);
+static xcb_atom_t getatom(xcb_connection_t *xc, const char *name);
 static void sethints(struct wl_listener *listener, void *data);
 static void xwaylandready(struct wl_listener *listener, void *data);
-static struct wl_listener new_xwayland_surface = {.notify = createnotifyx11};
-static struct wl_listener xwayland_ready = {.notify = xwaylandready};
 static struct wlr_xwayland *xwayland;
+static xcb_atom_t netatom[NetLast];
 #endif
 
 /* configuration, allows nested code to access above variables */
@@ -483,8 +460,11 @@ applyrules(Client *c)
 	const Rule *r;
 	Monitor *mon = selmon, *m;
 
-	appid = client_get_appid(c);
+	c->isfloating = client_is_float_type(c);
-	title = client_get_title(c);
+	if (!(appid = client_get_appid(c)))
+		appid = broken;
+	if (!(title = client_get_title(c)))
+		title = broken;
 
 	for (r = rules; r < END(rules); r++) {
 		if ((!r->title || strstr(title, r->title))
@@ -498,8 +478,6 @@ applyrules(Client *c)
 			}
 		}
 	}
-
-	c->isfloating |= client_is_float_type(c);
 	setmon(c, mon, newtags);
 }
 
@@ -552,14 +530,13 @@ arrangelayer(Monitor *m, struct wl_list *list, struct wlr_box *usable_area, int
 	wl_list_for_each(l, list, link) {
 		struct wlr_layer_surface_v1 *layer_surface = l->layer_surface;
 
-		if (!layer_surface->initialized)
-			continue;
-
 		if (exclusive != (layer_surface->current.exclusive_zone > 0))
 			continue;
 
 		wlr_scene_layer_surface_v1_configure(l->scene_layer, &full_area, usable_area);
 		wlr_scene_node_set_position(&l->popups->node, l->scene->node.x, l->scene->node.y);
+		l->geom.x = l->scene->node.x;
+		l->geom.y = l->scene->node.y;
 	}
 }
 
@@ -610,8 +587,8 @@ axisnotify(struct wl_listener *listener, void *data)
 	 * for example when you move the scroll wheel. */
 	struct wlr_pointer_axis_event *event = data;
 	wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
-	/* TODO: allow usage of scroll wheel for mousebindings, it can be implemented
+	/* TODO: allow usage of scroll whell for mousebindings, it can be implemented
-	 * by checking the event's orientation and the delta of the event */
+	 * checking the event's orientation and the delta of the event */
 	/* Notify the client with pointer focus of the axis event. */
 	wlr_seat_pointer_notify_axis(seat,
 			event->time_msec, event->orientation, event->delta,
@@ -653,17 +630,17 @@ buttonpress(struct wl_listener *listener, void *data)
 		break;
 	case WL_POINTER_BUTTON_STATE_RELEASED:
 		/* If you released any buttons, we exit interactive move/resize mode. */
-		/* TODO: should reset to the pointer focus's current setcursor */
+		/* TODO should reset to the pointer focus's current setcursor */
 		if (!locked && cursor_mode != CurNormal && cursor_mode != CurPressed) {
 			wlr_cursor_set_xcursor(cursor, cursor_mgr, "default");
 			cursor_mode = CurNormal;
 			/* Drop the window off on its new monitor */
 			selmon = xytomon(cursor->x, cursor->y);
 			setmon(grabc, selmon, 0);
-			grabc = NULL;
 			return;
-		}
+		} else {
 			cursor_mode = CurNormal;
+		}
 		break;
 	}
 	/* If the event wasn't handled by the compositor, notify the client with
@@ -699,7 +676,6 @@ checkidleinhibitor(struct wlr_surface *exclude)
 void
 cleanup(void)
 {
-	cleanuplisteners();
 #ifdef XWAYLAND
 	wlr_xwayland_destroy(xwayland);
 	xwayland = NULL;
@@ -713,8 +689,8 @@ cleanup(void)
 
 	destroykeyboardgroup(&kb_group->destroy, NULL);
 
-	/* If it's not destroyed manually, it will cause a use-after-free of wlr_seat.
+	/* If it's not destroyed manually it will cause a use-after-free of wlr_seat.
-	 * Destroy it until it's fixed on the wlroots side */
+	 * Destroy it until it's fixed in the wlroots side */
 	wlr_backend_destroy(backend);
 
 	wl_display_destroy(dpy);
@@ -751,43 +727,6 @@ cleanupmon(struct wl_listener *listener, void *data)
 	free(m);
 }
 
-void
-cleanuplisteners(void)
-{
-	wl_list_remove(&cursor_axis.link);
-	wl_list_remove(&cursor_button.link);
-	wl_list_remove(&cursor_frame.link);
-	wl_list_remove(&cursor_motion.link);
-	wl_list_remove(&cursor_motion_absolute.link);
-	wl_list_remove(&gpu_reset.link);
-	wl_list_remove(&new_idle_inhibitor.link);
-	wl_list_remove(&layout_change.link);
-	wl_list_remove(&new_input_device.link);
-	wl_list_remove(&new_virtual_keyboard.link);
-	wl_list_remove(&new_virtual_pointer.link);
-	wl_list_remove(&new_pointer_constraint.link);
-	wl_list_remove(&new_output.link);
-	wl_list_remove(&new_xdg_toplevel.link);
-	wl_list_remove(&new_xdg_decoration.link);
-	wl_list_remove(&new_xdg_popup.link);
-	wl_list_remove(&new_layer_surface.link);
-	wl_list_remove(&output_mgr_apply.link);
-	wl_list_remove(&output_mgr_test.link);
-	wl_list_remove(&output_power_mgr_set_mode.link);
-	wl_list_remove(&request_activate.link);
-	wl_list_remove(&request_cursor.link);
-	wl_list_remove(&request_set_psel.link);
-	wl_list_remove(&request_set_sel.link);
-	wl_list_remove(&request_set_cursor_shape.link);
-	wl_list_remove(&request_start_drag.link);
-	wl_list_remove(&start_drag.link);
-	wl_list_remove(&new_session_lock.link);
-#ifdef XWAYLAND
-	wl_list_remove(&new_xwayland_surface.link);
-	wl_list_remove(&xwayland_ready.link);
-#endif
-}
-
 void
 closemon(Monitor *m)
 {
@@ -826,7 +765,8 @@ commitlayersurfacenotify(struct wl_listener *listener, void *data)
 	struct wlr_layer_surface_v1_state old_state;
 
 	if (l->layer_surface->initial_commit) {
-		client_set_scale(layer_surface->surface, l->mon->wlr_output->scale);
+		wlr_fractional_scale_v1_notify_scale(layer_surface->surface, l->mon->wlr_output->scale);
+		wlr_surface_set_preferred_buffer_scale(layer_surface->surface, (int32_t)ceilf(l->mon->wlr_output->scale));
 
 		/* Temporarily set the layer's current state to pending
 		 * so that we can easily arrange it */
@@ -861,23 +801,24 @@ commitnotify(struct wl_listener *listener, void *data)
 		/*
 		 * Get the monitor this client will be rendered on
 		 * Note that if the user set a rule in which the client is placed on
-		 * a different monitor based on its title, this will likely select
+		 * a different monitor based on its title this will likely select
 		 * a wrong monitor.
 		 */
 		applyrules(c);
 		if (c->mon) {
-			client_set_scale(client_surface(c), c->mon->wlr_output->scale);
+			wlr_surface_set_preferred_buffer_scale(client_surface(c), (int)ceilf(c->mon->wlr_output->scale));
+			wlr_fractional_scale_v1_notify_scale(client_surface(c), c->mon->wlr_output->scale);
 		}
 		setmon(c, NULL, 0); /* Make sure to reapply rules in mapnotify() */
 
-		wlr_xdg_toplevel_set_wm_capabilities(c->surface.xdg->toplevel,
+		wlr_xdg_toplevel_set_wm_capabilities(c->surface.xdg->toplevel, WLR_XDG_TOPLEVEL_WM_CAPABILITIES_FULLSCREEN);
-				WLR_XDG_TOPLEVEL_WM_CAPABILITIES_FULLSCREEN);
+		wlr_xdg_toplevel_set_size(c->surface.xdg->toplevel, 0, 0);
 		if (c->decoration)
 			requestdecorationmode(&c->set_decoration_mode, c->decoration);
-		wlr_xdg_toplevel_set_size(c->surface.xdg->toplevel, 0, 0);
 		return;
 	}
 
+	if (client_surface(c)->mapped && c->mon)
 		resize(c, c->geom, (c->isfloating && !c->isfullscreen));
 
 	/* mark a pending resize as completed */
@@ -903,16 +844,13 @@ commitpopup(struct wl_listener *listener, void *data)
 		return;
 	popup->base->surface->data = wlr_scene_xdg_surface_create(
 			popup->parent->data, popup->base);
-	if ((l && !l->mon) || (c && !c->mon)) {
+	if ((l && !l->mon) || (c && !c->mon))
-		wlr_xdg_popup_destroy(popup);
 		return;
-	}
 	box = type == LayerShell ? l->mon->m : c->mon->w;
-	box.x -= (type == LayerShell ? l->scene->node.x : c->geom.x);
+	box.x -= (type == LayerShell ? l->geom.x : c->geom.x);
-	box.y -= (type == LayerShell ? l->scene->node.y : c->geom.y);
+	box.y -= (type == LayerShell ? l->geom.y : c->geom.y);
 	wlr_xdg_popup_unconstrain_from_box(popup, &box);
 	wl_list_remove(&listener->link);
-	free(listener);
 }
 
 void
@@ -1164,10 +1102,10 @@ createpointer(struct wlr_pointer *pointer)
 			libinput_device_config_middle_emulation_set_enabled(device, middle_button_emulation);
 
 		if (libinput_device_config_scroll_get_methods(device) != LIBINPUT_CONFIG_SCROLL_NO_SCROLL)
-			libinput_device_config_scroll_set_method(device, scroll_method);
+			libinput_device_config_scroll_set_method (device, scroll_method);
 
 		if (libinput_device_config_click_get_methods(device) != LIBINPUT_CONFIG_CLICK_METHOD_NONE)
-			libinput_device_config_click_set_method(device, click_method);
+			libinput_device_config_click_set_method (device, click_method);
 
 		if (libinput_device_config_send_events_get_modes(device))
 			libinput_device_config_send_events_set_mode(device, send_events_mode);
@@ -1215,7 +1153,7 @@ cursorconstrain(struct wlr_pointer_constraint_v1 *constraint)
 void
 cursorframe(struct wl_listener *listener, void *data)
 {
-	/* This event is forwarded by the cursor when a pointer emits a frame
+	/* 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
 	 * same time, in which case a frame event won't be sent in between. */
@@ -1252,8 +1190,6 @@ destroydragicon(struct wl_listener *listener, void *data)
 	/* Focus enter isn't sent during drag, so refocus the focused node. */
 	focusclient(focustop(selmon), 1);
 	motionnotify(0, NULL, 0, 0, 0, 0);
-	wl_list_remove(&listener->link);
-	free(listener);
 }
 
 void
@@ -1262,8 +1198,6 @@ destroyidleinhibitor(struct wl_listener *listener, void *data)
 	/* `data` is the wlr_surface of the idle inhibitor being destroyed,
 	 * at this point the idle inhibitor is still in the list of the manager */
 	checkidleinhibitor(wlr_surface_get_root_surface(data));
-	wl_list_remove(&listener->link);
-	free(listener);
 }
 
 void
@@ -1345,7 +1279,6 @@ destroynotify(struct wl_listener *listener, void *data)
 		wl_list_remove(&c->commit.link);
 		wl_list_remove(&c->map.link);
 		wl_list_remove(&c->unmap.link);
-		wl_list_remove(&c->maximize.link);
 	}
 	free(c);
 }
@@ -1371,15 +1304,22 @@ destroysessionlock(struct wl_listener *listener, void *data)
 	destroylock(lock, 0);
 }
 
+void
+destroysessionmgr(struct wl_listener *listener, void *data)
+{
+	wl_list_remove(&lock_listener.link);
+	wl_list_remove(&listener->link);
+}
+
 void
 destroykeyboardgroup(struct wl_listener *listener, void *data)
 {
 	KeyboardGroup *group = wl_container_of(listener, group, destroy);
 	wl_event_source_remove(group->key_repeat_source);
+	wlr_keyboard_group_destroy(group->wlr_group);
 	wl_list_remove(&group->key.link);
 	wl_list_remove(&group->modifiers.link);
 	wl_list_remove(&group->destroy.link);
-	wlr_keyboard_group_destroy(group->wlr_group);
 	free(group);
 }
 
@@ -1429,6 +1369,7 @@ focusclient(Client *c, int lift)
 		wl_list_insert(&fstack, &c->flink);
 		selmon = c->mon;
 		c->isurgent = 0;
+		client_restack_surface(c);
 
 		/* Don't change border color if there is an exclusive focus or we are
 		 * handling a drag operation */
@@ -1511,7 +1452,7 @@ focusstack(const Arg *arg)
 	focusclient(c, 1);
 }
 
-/* We probably should change the name of this: it sounds like it
+/* We probably should change the name of this, it sounds like
  * will focus the topmost client of this mon, when actually will
  * only return that client */
 Client *
@@ -1544,8 +1485,7 @@ gpureset(struct wl_listener *listener, void *data)
 	if (!(alloc = wlr_allocator_autocreate(backend, drw)))
 		die("couldn't recreate allocator");
 
-	wl_list_remove(&gpu_reset.link);
+	LISTEN_STATIC(&drw->events.lost, gpureset);
-	wl_signal_add(&drw->events.lost, &gpu_reset);
 
 	wlr_compositor_set_renderer(compositor, drw);
 
@@ -1560,10 +1500,22 @@ gpureset(struct wl_listener *listener, void *data)
 void
 handlesig(int signo)
 {
-	if (signo == SIGCHLD)
+	if (signo == SIGCHLD) {
+#ifdef XWAYLAND
+		siginfo_t in;
+		/* wlroots expects to reap the XWayland process itself, so we
+		 * use WNOWAIT to keep the child waitable until we know it's not
+		 * XWayland.
+		 */
+		while (!waitid(P_ALL, 0, &in, WEXITED|WNOHANG|WNOWAIT) && in.si_pid
+				&& (!xwayland || in.si_pid != xwayland->server->pid))
+			waitpid(in.si_pid, NULL, 0);
+#else
 		while (waitpid(-1, NULL, WNOHANG) > 0);
-	else if (signo == SIGINT || signo == SIGTERM)
+#endif
+	} else if (signo == SIGINT || signo == SIGTERM) {
 		quit(NULL);
+	}
 }
 
 void
@@ -1616,8 +1568,7 @@ keybinding(uint32_t mods, xkb_keysym_t sym)
 	const Key *k;
 	for (k = keys; k < END(keys); k++) {
 		if (CLEANMASK(mods) == CLEANMASK(k->mod)
-				&& xkb_keysym_to_lower(sym) == xkb_keysym_to_lower(k->keysym)
+				&& sym == k->keysym && k->func) {
-				&& k->func) {
 			k->func(&k->arg);
 			return 1;
 		}
@@ -1745,8 +1696,7 @@ mapnotify(struct wl_listener *listener, void *data)
 
 	/* Create scene tree for this client and its border */
 	c->scene = client_surface(c)->data = wlr_scene_tree_create(layers[LyrTile]);
-	/* Enabled later by a call to arrange() */
+	wlr_scene_node_set_enabled(&c->scene->node, c->type != XDGShell);
-	wlr_scene_node_set_enabled(&c->scene->node, client_is_unmanaged(c));
 	c->scene_surface = c->type == XDGShell
 			? wlr_scene_xdg_surface_create(c->scene, c->surface.xdg)
 			: wlr_scene_subsurface_tree_create(c->scene, client_surface(c));
@@ -1759,7 +1709,6 @@ mapnotify(struct wl_listener *listener, void *data)
 		/* Unmanaged clients always are floating */
 		wlr_scene_node_reparent(&c->scene->node, layers[LyrFloat]);
 		wlr_scene_node_set_position(&c->scene->node, c->geom.x, c->geom.y);
-		client_set_size(c, c->geom.width, c->geom.height);
 		if (client_wants_focus(c)) {
 			focusclient(c, 1);
 			exclusive_focus = c;
@@ -1784,8 +1733,8 @@ mapnotify(struct wl_listener *listener, void *data)
 
 	/* Set initial monitor, tags, floating status, and focus:
 	 * we always consider floating, clients that have parent and thus
-	 * we set the same tags and monitor as its parent.
+	 * we set the same tags and monitor than its parent, if not
-	 * If there is no parent, apply rules */
+	 * try to apply rules for them */
 	if ((p = client_get_parent(c))) {
 		c->isfloating = 1;
 		setmon(c, p->mon, p->tags);
@@ -1845,7 +1794,8 @@ motionabsolute(struct wl_listener *listener, void *data)
 	 * motion event, from 0..1 on each axis. This happens, for example, when
 	 * wlroots is running under a Wayland window rather than KMS+DRM, and you
 	 * move the mouse over the window. You could enter the window from any edge,
-	 * so we have to warp the mouse there. Also, some hardware emits these events. */
+	 * so we have to warp the mouse there. There is also some hardware which
+	 * emits these events. */
 	struct wlr_pointer_motion_absolute_event *event = data;
 	double lx, ly, dx, dy;
 
@@ -1876,8 +1826,8 @@ motionnotify(uint32_t time, struct wlr_input_device *device, double dx, double d
 			&& toplevel_from_wlr_surface(seat->pointer_state.focused_surface, &w, &l) >= 0) {
 		c = w;
 		surface = seat->pointer_state.focused_surface;
-		sx = cursor->x - (l ? l->scene->node.x : w->geom.x);
+		sx = cursor->x - (l ? l->geom.x : w->geom.x);
-		sy = cursor->y - (l ? l->scene->node.y : w->geom.y);
+		sy = cursor->y - (l ? l->geom.y : w->geom.y);
 	}
 
 	/* time is 0 in internal calls meant to restore pointer focus. */
@@ -1967,7 +1917,7 @@ moveresize(const Arg *arg)
 	case CurMove:
 		grabcx = (int)round(cursor->x) - grabc->geom.x;
 		grabcy = (int)round(cursor->y) - grabc->geom.y;
-		wlr_cursor_set_xcursor(cursor, cursor_mgr, "all-scroll");
+		wlr_cursor_set_xcursor(cursor, cursor_mgr, "fleur");
 		break;
 	case CurResize:
 		/* Doesn't work for X11 output - the next absolute motion event
@@ -2030,7 +1980,7 @@ apply_or_test:
 		ok &= test ? wlr_output_test_state(wlr_output, &state)
 				: wlr_output_commit_state(wlr_output, &state);
 
-		/* Don't move monitors if position wouldn't change. This avoids
+		/* Don't move monitors if position wouldn't change, this to avoid
 		* wlroots marking the output as manually configured.
 		* wlr_output_layout_add does not like disabled outputs */
 		if (!test && wlr_output->enabled && (m->m.x != config_head->state.x || m->m.y != config_head->state.y))
@@ -2091,6 +2041,7 @@ printstatus(void)
 	Monitor *m = NULL;
 	Client *c;
 	uint32_t occ, urg, sel;
+	const char *appid, *title;
 
 	wl_list_for_each(m, &mons, link) {
 		occ = urg = 0;
@@ -2102,8 +2053,10 @@ printstatus(void)
 				urg |= c->tags;
 		}
 		if ((c = focustop(m))) {
-			printf("%s title %s\n", m->wlr_output->name, client_get_title(c));
+			title = client_get_title(c);
-			printf("%s appid %s\n", m->wlr_output->name, client_get_appid(c));
+			appid = client_get_appid(c);
+			printf("%s title %s\n", m->wlr_output->name, title ? title : broken);
+			printf("%s appid %s\n", m->wlr_output->name, appid ? appid : broken);
 			printf("%s fullscreen %d\n", m->wlr_output->name, c->isfullscreen);
 			printf("%s floating %d\n", m->wlr_output->name, c->isfloating);
 			sel = c->tags;
@@ -2138,7 +2091,6 @@ powermgrsetmode(struct wl_listener *listener, void *data)
 	wlr_output_commit_state(m->wlr_output, &state);
 
 	m->asleep = !event->mode;
-	updatemons(NULL, NULL);
 }
 
 void
@@ -2155,6 +2107,7 @@ rendermon(struct wl_listener *listener, void *data)
 	Monitor *m = wl_container_of(listener, m, frame);
 	Client *c;
 	struct wlr_output_state pending = {0};
+	struct wlr_gamma_control_v1 *gamma_control;
 	struct timespec now;
 
 	/* Render if no XDG clients have an outstanding resize and are visible on
@@ -2164,7 +2117,32 @@ rendermon(struct wl_listener *listener, void *data)
 			goto skip;
 	}
 
+	/*
+	 * HACK: The "correct" way to set the gamma is to commit it together with
+	 * the rest of the state in one go, but to do that we would need to rewrite
+	 * wlr_scene_output_commit() in order to add the gamma to the pending
+	 * state before committing, instead try to commit the gamma in one frame,
+	 * and commit the rest of the state in the next one (or in the same frame if
+	 * the gamma can not be committed).
+	 */
+	if (m->gamma_lut_changed) {
+		gamma_control
+				= wlr_gamma_control_manager_v1_get_control(gamma_control_mgr, m->wlr_output);
+		m->gamma_lut_changed = 0;
+
+		if (!wlr_gamma_control_v1_apply(gamma_control, &pending))
+			goto commit;
+
+		if (!wlr_output_test_state(m->wlr_output, &pending)) {
+			wlr_gamma_control_v1_send_failed_and_destroy(gamma_control);
+			goto commit;
+		}
+		wlr_output_commit_state(m->wlr_output, &pending);
+		wlr_output_schedule_frame(m->wlr_output);
+	} else {
+commit:
 		wlr_scene_output_commit(m->scene_output, NULL);
+	}
 
 skip:
 	/* Let clients know a frame has been rendered */
@@ -2269,10 +2247,8 @@ run(char *startup_cmd)
 		close(piperw[0]);
 	}
 
-	/* Mark stdout as non-blocking to avoid the startup script
+	/* Mark stdout as non-blocking to avoid people who does not close stdin
-	 * causing dwl to freeze when a user neither closes stdin
+	 * nor consumes it in their startup script getting dwl frozen */
-	 * nor consumes standard input in his startup script */
-
 	if (fd_set_nonblock(STDOUT_FILENO) < 0)
 		close(STDOUT_FILENO);
 
@@ -2283,7 +2259,7 @@ run(char *startup_cmd)
 	selmon = xytomon(cursor->x, cursor->y);
 
 	/* TODO hack to get cursor to display in its initial location (100, 100)
-	 * instead of (0, 0) and then jumping. Still may not be fully
+	 * instead of (0, 0) and then jumping. still may not be fully
 	 * initialized, as the image/coordinates are not transformed for the
 	 * monitor when displayed here */
 	wlr_cursor_warp_closest(cursor, NULL, cursor->x, cursor->y);
@@ -2306,7 +2282,7 @@ setcursor(struct wl_listener *listener, void *data)
 	 * event, which will result in the client requesting set the cursor surface */
 	if (cursor_mode != CurNormal && cursor_mode != CurPressed)
 		return;
-	/* This can be sent by any client, so we check to make sure this one
+	/* This can be sent by any client, so we check to make sure this one is
 	 * actually has pointer focus first. If so, we can tell the cursor to
 	 * use the provided surface as the cursor image. It will set the
 	 * hardware cursor on the output that it's currently on and continue to
@@ -2322,7 +2298,7 @@ setcursorshape(struct wl_listener *listener, void *data)
 	struct wlr_cursor_shape_manager_v1_request_set_shape_event *event = data;
 	if (cursor_mode != CurNormal && cursor_mode != CurPressed)
 		return;
-	/* This can be sent by any client, so we check to make sure this one
+	/* This can be sent by any client, so we check to make sure this one is
 	 * actually has pointer focus first. If so, we can tell the cursor to
 	 * use the provided cursor shape. */
 	if (event->seat_client == seat->pointer_state.focused_client)
@@ -2368,6 +2344,17 @@ setfullscreen(Client *c, int fullscreen)
 	printstatus();
 }
 
+void
+setgamma(struct wl_listener *listener, void *data)
+{
+	struct wlr_gamma_control_manager_v1_set_gamma_event *event = data;
+	Monitor *m = event->output->data;
+	if (!m)
+		return;
+	m->gamma_lut_changed = 1;
+	wlr_output_schedule_frame(m->wlr_output);
+}
+
 void
 setlayout(const Arg *arg)
 {
@@ -2425,7 +2412,7 @@ setpsel(struct wl_listener *listener, void *data)
 {
 	/* This event is raised by the seat when a client wants to set the selection,
 	 * usually when the user copies something. wlroots allows compositors to
-	 * ignore such requests if they so choose, but in dwl we always honor them
+	 * ignore such requests if they so choose, but in dwl we always honor
 	 */
 	struct wlr_seat_request_set_primary_selection_event *event = data;
 	wlr_seat_set_primary_selection(seat, event->source, event->serial);
@@ -2436,7 +2423,7 @@ setsel(struct wl_listener *listener, void *data)
 {
 	/* This event is raised by the seat when a client wants to set the selection,
 	 * usually when the user copies something. wlroots allows compositors to
-	 * ignore such requests if they so choose, but in dwl we always honor them
+	 * ignore such requests if they so choose, but in dwl we always honor
 	 */
 	struct wlr_seat_request_set_selection_event *event = data;
 	wlr_seat_set_selection(seat, event->source, event->serial);
@@ -2445,7 +2432,7 @@ setsel(struct wl_listener *listener, void *data)
 void
 setup(void)
 {
-	int drm_fd, i, sig[] = {SIGCHLD, SIGINT, SIGTERM, SIGPIPE};
+	int i, sig[] = {SIGCHLD, SIGINT, SIGTERM, SIGPIPE};
 	struct sigaction sa = {.sa_flags = SA_RESTART, .sa_handler = handlesig};
 	sigemptyset(&sa.sa_mask);
 
@@ -2480,12 +2467,12 @@ setup(void)
 	 * supports for shared memory, this configures that for clients. */
 	if (!(drw = wlr_renderer_autocreate(backend)))
 		die("couldn't create renderer");
-	wl_signal_add(&drw->events.lost, &gpu_reset);
+	LISTEN_STATIC(&drw->events.lost, gpureset);
 
 	/* Create shm, drm and linux_dmabuf interfaces by ourselves.
-	 * The simplest way is to call:
+	 * The simplest way is call:
 	 *      wlr_renderer_init_wl_display(drw);
-	 * but we need to create the linux_dmabuf interface manually to integrate it
+	 * but we need to create manually the linux_dmabuf interface to integrate it
 	 * with wlr_scene. */
 	wlr_renderer_init_wl_shm(drw, dpy);
 
@@ -2495,10 +2482,6 @@ setup(void)
 				wlr_linux_dmabuf_v1_create_with_renderer(dpy, 5, drw));
 	}
 
-	if ((drm_fd = wlr_renderer_get_drm_fd(drw)) >= 0 && drw->features.timeline
-			&& backend->features.timeline)
-		wlr_linux_drm_syncobj_manager_v1_create(dpy, 1, drm_fd);
-
 	/* Autocreates an allocator for us.
 	 * The allocator is the bridge between the renderer and the backend. It
 	 * handles the buffer creation, allowing wlroots to render onto the
@@ -2522,29 +2505,29 @@ setup(void)
 	wlr_viewporter_create(dpy);
 	wlr_single_pixel_buffer_manager_v1_create(dpy);
 	wlr_fractional_scale_manager_v1_create(dpy, 1);
-	wlr_presentation_create(dpy, backend, 2);
+	wlr_presentation_create(dpy, backend);
 	wlr_alpha_modifier_v1_create(dpy);
 
 	/* Initializes the interface used to implement urgency hints */
 	activation = wlr_xdg_activation_v1_create(dpy);
-	wl_signal_add(&activation->events.request_activate, &request_activate);
+	LISTEN_STATIC(&activation->events.request_activate, urgent);
 
-	wlr_scene_set_gamma_control_manager_v1(scene, wlr_gamma_control_manager_v1_create(dpy));
+	gamma_control_mgr = wlr_gamma_control_manager_v1_create(dpy);
+	LISTEN_STATIC(&gamma_control_mgr->events.set_gamma, setgamma);
 
 	power_mgr = wlr_output_power_manager_v1_create(dpy);
-	wl_signal_add(&power_mgr->events.set_mode, &output_power_mgr_set_mode);
+	LISTEN_STATIC(&power_mgr->events.set_mode, powermgrsetmode);
 
-	/* Creates an output layout, which is a wlroots utility for working with an
+	/* Creates an output layout, which a wlroots utility for working with an
 	 * arrangement of screens in a physical layout. */
 	output_layout = wlr_output_layout_create(dpy);
-	wl_signal_add(&output_layout->events.change, &layout_change);
+	LISTEN_STATIC(&output_layout->events.change, updatemons);
-
 	wlr_xdg_output_manager_v1_create(dpy, output_layout);
 
 	/* Configure a listener to be notified when new outputs are available on the
 	 * backend. */
 	wl_list_init(&mons);
-	wl_signal_add(&backend->events.new_output, &new_output);
+	LISTEN_STATIC(&backend->events.new_output, createmon);
 
 	/* Set up our client lists, the xdg-shell and the layer-shell. The xdg-shell is a
 	 * Wayland protocol which is used for application windows. For more
@@ -2556,19 +2539,20 @@ setup(void)
 	wl_list_init(&fstack);
 
 	xdg_shell = wlr_xdg_shell_create(dpy, 6);
-	wl_signal_add(&xdg_shell->events.new_toplevel, &new_xdg_toplevel);
+	LISTEN_STATIC(&xdg_shell->events.new_toplevel, createnotify);
-	wl_signal_add(&xdg_shell->events.new_popup, &new_xdg_popup);
+	LISTEN_STATIC(&xdg_shell->events.new_popup, createpopup);
 
 	layer_shell = wlr_layer_shell_v1_create(dpy, 3);
-	wl_signal_add(&layer_shell->events.new_surface, &new_layer_surface);
+	LISTEN_STATIC(&layer_shell->events.new_surface, createlayersurface);
 
 	idle_notifier = wlr_idle_notifier_v1_create(dpy);
 
 	idle_inhibit_mgr = wlr_idle_inhibit_v1_create(dpy);
-	wl_signal_add(&idle_inhibit_mgr->events.new_inhibitor, &new_idle_inhibitor);
+	LISTEN_STATIC(&idle_inhibit_mgr->events.new_inhibitor, createidleinhibitor);
 
 	session_lock_mgr = wlr_session_lock_manager_v1_create(dpy);
-	wl_signal_add(&session_lock_mgr->events.new_lock, &new_session_lock);
+	wl_signal_add(&session_lock_mgr->events.new_lock, &lock_listener);
+	LISTEN_STATIC(&session_lock_mgr->events.destroy, destroysessionmgr);
 	locked_bg = wlr_scene_rect_create(layers[LyrBlock], sgeom.width, sgeom.height,
 			(float [4]){0.1f, 0.1f, 0.1f, 1.0f});
 	wlr_scene_node_set_enabled(&locked_bg->node, 0);
@@ -2578,10 +2562,10 @@ setup(void)
 			wlr_server_decoration_manager_create(dpy),
 			WLR_SERVER_DECORATION_MANAGER_MODE_SERVER);
 	xdg_decoration_mgr = wlr_xdg_decoration_manager_v1_create(dpy);
-	wl_signal_add(&xdg_decoration_mgr->events.new_toplevel_decoration, &new_xdg_decoration);
+	LISTEN_STATIC(&xdg_decoration_mgr->events.new_toplevel_decoration, createdecoration);
 
 	pointer_constraints = wlr_pointer_constraints_v1_create(dpy);
-	wl_signal_add(&pointer_constraints->events.new_constraint, &new_pointer_constraint);
+	LISTEN_STATIC(&pointer_constraints->events.new_constraint, createpointerconstraint);
 
 	relative_pointer_mgr = wlr_relative_pointer_manager_v1_create(dpy);
 
@@ -2609,14 +2593,14 @@ setup(void)
 	 *
 	 * And more comments are sprinkled throughout the notify functions above.
 	 */
-	wl_signal_add(&cursor->events.motion, &cursor_motion);
+	LISTEN_STATIC(&cursor->events.motion, motionrelative);
-	wl_signal_add(&cursor->events.motion_absolute, &cursor_motion_absolute);
+	LISTEN_STATIC(&cursor->events.motion_absolute, motionabsolute);
-	wl_signal_add(&cursor->events.button, &cursor_button);
+	LISTEN_STATIC(&cursor->events.button, buttonpress);
-	wl_signal_add(&cursor->events.axis, &cursor_axis);
+	LISTEN_STATIC(&cursor->events.axis, axisnotify);
-	wl_signal_add(&cursor->events.frame, &cursor_frame);
+	LISTEN_STATIC(&cursor->events.frame, cursorframe);
 
 	cursor_shape_mgr = wlr_cursor_shape_manager_v1_create(dpy, 1);
-	wl_signal_add(&cursor_shape_mgr->events.request_set_shape, &request_set_cursor_shape);
+	LISTEN_STATIC(&cursor_shape_mgr->events.request_set_shape, setcursorshape);
 
 	/*
 	 * Configures a seat, which is a single "seat" at which a user sits and
@@ -2624,27 +2608,25 @@ setup(void)
 	 * pointer, touch, and drawing tablet device. We also rig up a listener to
 	 * let us know when new input devices are available on the backend.
 	 */
-	wl_signal_add(&backend->events.new_input, &new_input_device);
+	LISTEN_STATIC(&backend->events.new_input, inputdevice);
 	virtual_keyboard_mgr = wlr_virtual_keyboard_manager_v1_create(dpy);
-	wl_signal_add(&virtual_keyboard_mgr->events.new_virtual_keyboard,
+	LISTEN_STATIC(&virtual_keyboard_mgr->events.new_virtual_keyboard, virtualkeyboard);
-			&new_virtual_keyboard);
 	virtual_pointer_mgr = wlr_virtual_pointer_manager_v1_create(dpy);
-    wl_signal_add(&virtual_pointer_mgr->events.new_virtual_pointer,
+	LISTEN_STATIC(&virtual_pointer_mgr->events.new_virtual_pointer, virtualpointer);
-            &new_virtual_pointer);
 
 	seat = wlr_seat_create(dpy, "seat0");
-	wl_signal_add(&seat->events.request_set_cursor, &request_cursor);
+	LISTEN_STATIC(&seat->events.request_set_cursor, setcursor);
-	wl_signal_add(&seat->events.request_set_selection, &request_set_sel);
+	LISTEN_STATIC(&seat->events.request_set_selection, setsel);
-	wl_signal_add(&seat->events.request_set_primary_selection, &request_set_psel);
+	LISTEN_STATIC(&seat->events.request_set_primary_selection, setpsel);
-	wl_signal_add(&seat->events.request_start_drag, &request_start_drag);
+	LISTEN_STATIC(&seat->events.request_start_drag, requeststartdrag);
-	wl_signal_add(&seat->events.start_drag, &start_drag);
+	LISTEN_STATIC(&seat->events.start_drag, startdrag);
 
 	kb_group = createkeyboardgroup();
 	wl_list_init(&kb_group->destroy.link);
 
 	output_mgr = wlr_output_manager_v1_create(dpy);
-	wl_signal_add(&output_mgr->events.apply, &output_mgr_apply);
+	LISTEN_STATIC(&output_mgr->events.apply, outputmgrapply);
-	wl_signal_add(&output_mgr->events.test, &output_mgr_test);
+	LISTEN_STATIC(&output_mgr->events.test, outputmgrtest);
 
 	/* Make sure XWayland clients don't connect to the parent X server,
 	 * e.g when running in the x11 backend or the wayland backend and the
@@ -2656,8 +2638,8 @@ setup(void)
 	 * It will be started when the first X client is started.
 	 */
 	if ((xwayland = wlr_xwayland_create(dpy, compositor, 1))) {
-		wl_signal_add(&xwayland->events.ready, &xwayland_ready);
+		LISTEN_STATIC(&xwayland->events.ready, xwaylandready);
-		wl_signal_add(&xwayland->events.new_surface, &new_xwayland_surface);
+		LISTEN_STATIC(&xwayland->events.new_surface, createnotifyx11);
 
 		setenv("DISPLAY", xwayland->display_name, 1);
 	} else {
@@ -3100,24 +3082,17 @@ configurex11(struct wl_listener *listener, void *data)
 {
 	Client *c = wl_container_of(listener, c, configure);
 	struct wlr_xwayland_surface_configure_event *event = data;
-	if (!client_surface(c) || !client_surface(c)->mapped) {
+	/* TODO: figure out if there is another way to do this */
+	if (!c->mon) {
 		wlr_xwayland_surface_configure(c->surface.xwayland,
 				event->x, event->y, event->width, event->height);
 		return;
 	}
-	if (client_is_unmanaged(c)) {
+	if (c->isfloating || client_is_unmanaged(c))
-		wlr_scene_node_set_position(&c->scene->node, event->x, event->y);
+		resize(c, (struct wlr_box){.x = event->x, .y = event->y,
-		wlr_xwayland_surface_configure(c->surface.xwayland,
+				.width = event->width + c->bw * 2, .height = event->height + c->bw * 2}, 0);
-				event->x, event->y, event->width, event->height);
+	else
-		return;
-	}
-	if ((c->isfloating && c != grabc) || !c->mon->lt[c->mon->sellt]->arrange) {
-		resize(c, (struct wlr_box){.x = event->x - c->bw,
-				.y = event->y - c->bw, .width = event->width + c->bw * 2,
-				.height = event->height + c->bw * 2}, 0);
-	} else {
 		arrange(c->mon);
-	}
 }
 
 void
@@ -3151,6 +3126,19 @@ dissociatex11(struct wl_listener *listener, void *data)
 	wl_list_remove(&c->unmap.link);
 }
 
+xcb_atom_t
+getatom(xcb_connection_t *xc, const char *name)
+{
+	xcb_atom_t atom = 0;
+	xcb_intern_atom_reply_t *reply;
+	xcb_intern_atom_cookie_t cookie = xcb_intern_atom(xc, 0, strlen(name), name);
+	if ((reply = xcb_intern_atom_reply(xc, cookie, NULL)))
+		atom = reply->atom;
+	free(reply);
+
+	return atom;
+}
+
 void
 sethints(struct wl_listener *listener, void *data)
 {
@@ -3170,6 +3158,19 @@ void
 xwaylandready(struct wl_listener *listener, void *data)
 {
 	struct wlr_xcursor *xcursor;
+	xcb_connection_t *xc = xcb_connect(xwayland->display_name, NULL);
+	int err = xcb_connection_has_error(xc);
+	if (err) {
+		fprintf(stderr, "xcb_connect to X server failed with code %d\n. Continuing with degraded functionality.\n", err);
+		return;
+	}
+
+	/* Collect atoms we are interested in. If getatom returns 0, we will
+	 * not detect that window type. */
+	netatom[NetWMWindowTypeDialog] = getatom(xc, "_NET_WM_WINDOW_TYPE_DIALOG");
+	netatom[NetWMWindowTypeSplash] = getatom(xc, "_NET_WM_WINDOW_TYPE_SPLASH");
+	netatom[NetWMWindowTypeToolbar] = getatom(xc, "_NET_WM_WINDOW_TYPE_TOOLBAR");
+	netatom[NetWMWindowTypeUtility] = getatom(xc, "_NET_WM_WINDOW_TYPE_UTILITY");
 
 	/* assign the one and only seat */
 	wlr_xwayland_set_seat(xwayland, seat);
@@ -3180,6 +3181,8 @@ xwaylandready(struct wl_listener *listener, void *data)
 				xcursor->images[0]->buffer, xcursor->images[0]->width * 4,
 				xcursor->images[0]->width, xcursor->images[0]->height,
 				xcursor->images[0]->hotspot_x, xcursor->images[0]->hotspot_y);
+
+	xcb_disconnect(xc);
 }
 #endif