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2026-07-12 08:16:17 +03:30
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dwl/dwl-patches/patches/swallow/README.md
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### Description
This patch adds "window swallowing" to dwl.
If a user runs a graphical program from the terminal (e.g., `mpv`), the terminal
will be hidden and only a window of the newly spawned graphical program will
be visible. The terminal stays hidden until the graphical program is closed.
This patch helps users spawning a lot of graphical programs from their command
line by avoiding cluttering the screen with many unusable terminals.
`foot` is the terminal by default, you can change it in client rules in config.h.
In `2025-03-03 v0.7` version and above, the patch had been rewritten from
scratch to make it more robust and add a few more features:
- "dynamically swallow" windows by pressing `Alt+a` (a focused window will
swallow/unswallow the previously focused one)
- toggle automatic swallowing by `Alt+Shift+a`
- if a window has swallowed another, it get thicker borders
### Download
#### swallow.patch
- [v0.7](https://codeberg.org/dwl/dwl-patches/raw/branch/main/patches/swallow/swallow.patch)
- [2025-03-03 v0.7](https://codeberg.org/dwl/dwl-patches/raw/commit/2e5748edfe1129f95c7bb1bf9dd590a897f55f57/patches/swallow/swallow.patch) (added "dynamic swallowing" support)
- [2024-07-13](https://codeberg.org/dwl/dwl-patches/raw/commit/f1ed83eaeba46108f4ee8164094cb431d64a3e68/patches/swallow/swallow.patch)
- [2024-07-13](https://codeberg.org/dwl/dwl-patches/raw/commit/f64d701bab2f9f52d3637edd091684f920407d87/patches/swallow/swallow.patch)
- [2024-05-02](https://codeberg.org/dwl/dwl-patches/raw/commit/9c5d5d85f3ac780e7a14d5d0535e3349ce8b8f53/patches/swallow/swallow.patch)
- [2024-04-03](https://codeberg.org/dwl/dwl-patches/raw/commit/3c9a8e3232a8531871924484cef1ef0938730e15/swallow/swallow.patch)
- [2024-01-01](https://codeberg.org/dwl/dwl-patches/raw/commit/8a352a1b27a64821ba9fbfda52fe82463ac84c66/swallow/swallow.patch)
- [2023-10-26](https://github.com/djpohly/dwl/compare/main...youbitchoc:swallow.patch)
- [2023-08-16](https://github.com/djpohly/dwl/compare/main...mewkl:swallowx.patch) (added XWayland support)
- [2023-07-15](https://github.com/djpohly/dwl/compare/main...NikitaIvanovV:swallow.patch)
- [v0.4](https://github.com/djpohly/dwl/compare/main...dm1tz:04-swallow.patch)
- [2021-12-03](https://github.com/djpohly/dwl/compare/main...dm1tz:swallow.patch)
#### swallow-freebsd.patch
Apply this patch on top of the swallow.patch if you use FreeBSD.
- [v0.7](https://codeberg.org/dwl/dwl-patches/raw/branch/main/patches/swallow/swallow-freebsd.patch)
- [2025-03-03 v0.7](https://codeberg.org/dwl/dwl-patches/raw/commit/2e5748edfe1129f95c7bb1bf9dd590a897f55f57/patches/swallow/swallow-freebsd.patch) (added "dynamic swallowing" support)
- [2024-07-13](https://codeberg.org/dwl/dwl-patches/raw/commit/f1ed83eaeba46108f4ee8164094cb431d64a3e68/patches/swallow/swallow-freebsd.patch)
### Authors
- [Nikita Ivanov](https://codeberg.org/nikitaivanov) ([GitHub](https://github.com/NikitaIvanovV))
- [Dmitry Zakharchenko](https://github.com/dm1tz)
- [Palanix](https://codeberg.org/Palanix)
- [Connor Worrell](https://github.com/ConnorWorrell)
- [Mewkl](https://github.com/mewkl)
- [Choc](https://codeberg.org/notchoc)
dwl/dwl-patches/patches/swallow/swallow-freebsd.patch
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From 301e1b368d92a32a7bdcd4bd1f0ede0295977e3e Mon Sep 17 00:00:00 2001
From: Nikita Ivanov <nikita.vyach.ivanov@gmail.com>
Date: Mon, 3 Mar 2025 19:49:07 +0100
Subject: [PATCH] swallow: add FreeBSD support
---
dwl.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/dwl.c b/dwl.c
index 71d500a..52fdd9c 100644
--- a/dwl.c
+++ b/dwl.c
@@ -67,6 +67,14 @@
#include <xcb/xcb_icccm.h>
#endif
+#ifdef __FreeBSD__
+#define __BSD_VISIBLE
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/user.h>
+#endif
+
#include "util.h"
/* macros */
@@ -2032,6 +2040,7 @@ outputmgrtest(struct wl_listener *listener, void *data)
pid_t
parentpid(pid_t pid)
{
+#ifdef __linux__
unsigned int v = 0;
FILE *f;
char buf[256];
@@ -2041,6 +2050,14 @@ parentpid(pid_t pid)
fscanf(f, "%*u %*s %*c %u", &v);
fclose(f);
return (pid_t)v;
+#elif defined(__FreeBSD__)
+ struct kinfo_proc kip;
+ size_t len = sizeof(struct kinfo_proc);
+ int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, p };
+ if (sysctl(mib, 4, &kip, &len, NULL, 0) < 0 || len == 0)
+ return 0;
+ return kip.ki_ppid;
+#endif
}
void
--
2.49.0
dwl/dwl-patches/patches/swallow/swallow.patch
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From a220e1ed4b04a66c837dfc8e3363d3e696cbf541 Mon Sep 17 00:00:00 2001
From: Nikita Ivanov <nikita.vyach.ivanov@gmail.com>
Date: Wed, 5 Feb 2025 02:34:39 +0100
Subject: [PATCH] Swallow: hide the terminal when it spawns a client
---
client.h | 12 ++++
config.def.h | 11 +++-
dwl.c | 152 +++++++++++++++++++++++++++++++++++++++++++++++++--
3 files changed, 168 insertions(+), 7 deletions(-)
diff --git a/client.h b/client.h
index 42f225f..bc9cad2 100644
--- a/client.h
+++ b/client.h
@@ -131,6 +131,18 @@ client_get_appid(Client *c)
return c->surface.xdg->toplevel->app_id;
}
+static inline int
+client_get_pid(Client *c)
+{
+ pid_t pid;
+#ifdef XWAYLAND
+ if (client_is_x11(c))
+ return c->surface.xwayland->pid;
+#endif
+ wl_client_get_credentials(c->surface.xdg->client->client, &pid, NULL, NULL);
+ return pid;
+}
+
static inline void
client_get_clip(Client *c, struct wlr_box *clip)
{
diff --git a/config.def.h b/config.def.h
index 22d2171..42342f1 100644
--- a/config.def.h
+++ b/config.def.h
@@ -13,6 +13,8 @@ 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[] = {0.1f, 0.1f, 0.1f, 1.0f}; /* You can also use glsl colors */
+static int enableautoswallow = 1; /* enables autoswallowing newly spawned clients */
+static float swallowborder = 1.0f; /* add this multiplied by borderpx to border when a client is swallowed */
/* tagging - TAGCOUNT must be no greater than 31 */
#define TAGCOUNT (9)
@@ -22,10 +24,11 @@ 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 */
+ /* app_id title tags mask isfloating isterm noswallow 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" */
+ { "foot", NULL, 0, 0, 1, 1, -1 },
+ { "Gimp_EXAMPLE", NULL, 0, 1, 0, 0, -1 }, /* Start on currently visible tags floating, not tiled */
+ { "firefox_EXAMPLE", NULL, 1 << 8, 0, 0, 0, -1 }, /* Start on ONLY tag "9" */
};
/* layout(s) */
@@ -142,6 +145,8 @@ static const Key keys[] = {
{ MODKEY, XKB_KEY_space, setlayout, {0} },
{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_space, togglefloating, {0} },
{ MODKEY, XKB_KEY_e, togglefullscreen, {0} },
+ { MODKEY, XKB_KEY_a, toggleswallow, {0} },
+ { MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_A, toggleautoswallow,{0} },
{ MODKEY, XKB_KEY_0, view, {.ui = ~0} },
{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_parenright, tag, {.ui = ~0} },
{ MODKEY, XKB_KEY_comma, focusmon, {.i = WLR_DIRECTION_LEFT} },
diff --git a/dwl.c b/dwl.c
index def2562..71d500a 100644
--- a/dwl.c
+++ b/dwl.c
@@ -73,12 +73,13 @@
#define MAX(A, B) ((A) > (B) ? (A) : (B))
#define MIN(A, B) ((A) < (B) ? (A) : (B))
#define CLEANMASK(mask) (mask & ~WLR_MODIFIER_CAPS)
-#define VISIBLEON(C, M) ((M) && (C)->mon == (M) && ((C)->tags & (M)->tagset[(M)->seltags]))
+#define VISIBLEON(C, M) ((M) && (C)->mon == (M) && ((C)->tags & (M)->tagset[(M)->seltags]) && !(C)->swallowedby)
#define LENGTH(X) (sizeof X / sizeof X[0])
#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 { static struct wl_listener _l = {.notify = (H)}; wl_signal_add((E), &_l); } while (0)
+#define BORDERPX(C) (borderpx + ((C)->swallowing ? (int)ceilf(swallowborder * (C)->swallowing->bw) : 0))
/* enums */
enum { CurNormal, CurPressed, CurMove, CurResize }; /* cursor */
@@ -104,7 +105,8 @@ typedef struct {
} Button;
typedef struct Monitor Monitor;
-typedef struct {
+typedef struct Client Client;
+struct Client {
/* Must keep these three elements in this order */
unsigned int type; /* XDGShell or X11* */
struct wlr_box geom; /* layout-relative, includes border */
@@ -140,8 +142,12 @@ typedef struct {
unsigned int bw;
uint32_t tags;
int isfloating, isurgent, isfullscreen;
+ int isterm, noswallow;
uint32_t resize; /* configure serial of a pending resize */
-} Client;
+ pid_t pid;
+ Client *swallowing; /* client being hidden */
+ Client *swallowedby;
+};
typedef struct {
uint32_t mod;
@@ -230,6 +236,8 @@ typedef struct {
const char *title;
uint32_t tags;
int isfloating;
+ int isterm;
+ int noswallow;
int monitor;
} Rule;
@@ -311,6 +319,7 @@ static void moveresize(const Arg *arg);
static void outputmgrapply(struct wl_listener *listener, void *data);
static void outputmgrapplyortest(struct wlr_output_configuration_v1 *config, int test);
static void outputmgrtest(struct wl_listener *listener, void *data);
+static pid_t parentpid(pid_t pid);
static void pointerfocus(Client *c, struct wlr_surface *surface,
double sx, double sy, uint32_t time);
static void printstatus(void);
@@ -335,11 +344,15 @@ static void setsel(struct wl_listener *listener, void *data);
static void setup(void);
static void spawn(const Arg *arg);
static void startdrag(struct wl_listener *listener, void *data);
+static void swallow(Client *c, Client *toswallow);
static void tag(const Arg *arg);
static void tagmon(const Arg *arg);
+static Client *termforwin(Client *c);
static void tile(Monitor *m);
static void togglefloating(const Arg *arg);
static void togglefullscreen(const Arg *arg);
+static void toggleswallow(const Arg *arg);
+static void toggleautoswallow(const Arg *arg);
static void toggletag(const Arg *arg);
static void toggleview(const Arg *arg);
static void unlocksession(struct wl_listener *listener, void *data);
@@ -466,11 +479,15 @@ applyrules(Client *c)
if (!(title = client_get_title(c)))
title = broken;
+ c->pid = client_get_pid(c);
+
for (r = rules; r < END(rules); r++) {
if ((!r->title || strstr(title, r->title))
&& (!r->id || strstr(appid, r->id))) {
c->isfloating = r->isfloating;
newtags |= r->tags;
+ c->isterm = r->isterm;
+ c->noswallow = r->noswallow;
i = 0;
wl_list_for_each(m, &mons, link) {
if (r->monitor == i++)
@@ -478,6 +495,12 @@ applyrules(Client *c)
}
}
}
+ if (enableautoswallow && !c->noswallow && !c->isfloating &&
+ !c->surface.xdg->initial_commit) {
+ Client *p = termforwin(c);
+ if (p)
+ swallow(c, p);
+ }
setmon(c, mon, newtags);
}
@@ -2006,6 +2029,20 @@ outputmgrtest(struct wl_listener *listener, void *data)
outputmgrapplyortest(config, 1);
}
+pid_t
+parentpid(pid_t pid)
+{
+ unsigned int v = 0;
+ FILE *f;
+ char buf[256];
+ snprintf(buf, sizeof(buf) - 1, "/proc/%u/stat", (unsigned)pid);
+ if (!(f = fopen(buf, "r")))
+ return 0;
+ fscanf(f, "%*u %*s %*c %u", &v);
+ fclose(f);
+ return (pid_t)v;
+}
+
void
pointerfocus(Client *c, struct wlr_surface *surface, double sx, double sy,
uint32_t time)
@@ -2326,7 +2363,7 @@ setfullscreen(Client *c, int fullscreen)
c->isfullscreen = fullscreen;
if (!c->mon || !client_surface(c)->mapped)
return;
- c->bw = fullscreen ? 0 : borderpx;
+ c->bw = fullscreen ? 0 : BORDERPX(c);
client_set_fullscreen(c, fullscreen);
wlr_scene_node_reparent(&c->scene->node, layers[c->isfullscreen
? LyrFS : c->isfloating ? LyrFloat : LyrTile]);
@@ -2404,6 +2441,9 @@ setmon(Client *c, Monitor *m, uint32_t newtags)
setfloating(c, c->isfloating);
}
focusclient(focustop(selmon), 1);
+
+ if (c->swallowing)
+ setmon(c->swallowing, m, newtags);
}
void
@@ -2669,6 +2709,44 @@ startdrag(struct wl_listener *listener, void *data)
LISTEN_STATIC(&drag->icon->events.destroy, destroydragicon);
}
+void
+swallow(Client *c, Client *toswallow)
+{
+ /* Do not allow a client to swallow itself */
+ if (c == toswallow)
+ return;
+
+ /* Swallow */
+ if (toswallow && !c->swallowing) {
+ c->swallowing = toswallow;
+ toswallow->swallowedby = c;
+ toswallow->mon = c->mon;
+ toswallow->mon = c->mon;
+ wl_list_remove(&c->link);
+ wl_list_insert(&c->swallowing->link, &c->link);
+ wl_list_remove(&c->flink);
+ wl_list_insert(&c->swallowing->flink, &c->flink);
+ c->bw = BORDERPX(c);
+ c->tags = toswallow->tags;
+ c->isfloating = toswallow->isfloating;
+ c->geom = toswallow->geom;
+ setfullscreen(toswallow, 0);
+ }
+
+ /* Unswallow */
+ else if (c->swallowing) {
+ wl_list_remove(&c->swallowing->link);
+ wl_list_insert(&c->link, &c->swallowing->link);
+ wl_list_remove(&c->swallowing->flink);
+ wl_list_insert(&c->flink, &c->swallowing->flink);
+ c->swallowing->tags = c->tags;
+ c->swallowing->swallowedby = NULL;
+ c->swallowing = NULL;
+ c->bw = BORDERPX(c);
+ setfullscreen(c, 0);
+ }
+}
+
void
tag(const Arg *arg)
{
@@ -2690,6 +2768,40 @@ tagmon(const Arg *arg)
setmon(sel, dirtomon(arg->i), 0);
}
+Client *
+termforwin(Client *c)
+{
+ Client *p;
+ pid_t pid;
+ pid_t pids[32];
+ size_t i, pids_len;
+
+ if (!c->pid || c->isterm)
+ return NULL;
+
+ /* Get all parent pids */
+ pids_len = 0;
+ pid = c->pid;
+ while (pids_len < LENGTH(pids)) {
+ pid = parentpid(pid);
+ if (!pid)
+ break;
+ pids[pids_len++] = pid;
+ }
+
+ /* Find closest parent */
+ for (i = 0; i < pids_len; i++) {
+ wl_list_for_each(p, &clients, link) {
+ if (!p->pid || !p->isterm || p->swallowedby)
+ continue;
+ if (pids[i] == p->pid)
+ return p;
+ }
+ }
+
+ return NULL;
+}
+
void
tile(Monitor *m)
{
@@ -2741,6 +2853,32 @@ togglefullscreen(const Arg *arg)
setfullscreen(sel, !sel->isfullscreen);
}
+void
+toggleswallow(const Arg *arg)
+{
+ Client *c, *sel = focustop(selmon);
+ if (!sel)
+ return;
+
+ if (sel->swallowing) {
+ swallow(sel, NULL);
+ } else {
+ wl_list_for_each(c, &sel->flink, flink) {
+ if (&c->flink == &fstack)
+ continue; /* wrap past the sentinel node */
+ if (VISIBLEON(c, selmon))
+ break; /* found it */
+ }
+ swallow(sel, c);
+ }
+}
+
+void
+toggleautoswallow(const Arg *arg)
+{
+ enableautoswallow = !enableautoswallow;
+}
+
void
toggletag(const Arg *arg)
{
@@ -2801,6 +2939,12 @@ unmapnotify(struct wl_listener *listener, void *data)
grabc = NULL;
}
+ if (c->swallowing) {
+ swallow(c, NULL);
+ } else if (c->swallowedby) {
+ swallow(c->swallowedby, NULL);
+ }
+
if (client_is_unmanaged(c)) {
if (c == exclusive_focus) {
exclusive_focus = NULL;
--
2.49.0