jachym/dwl-patches
1
0
Fork 0
mirror of https://codeberg.org/dwl/dwl-patches.git synced 2026-08-04 19:24:15 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

add gamepad-bindings patch

Browse Source
This commit is contained in:
Dhruva Sambrani
2026-07-18 23:04:54 +02:00
parent c9f31f29ea
commit a44a71ab0f
2 changed files with 431 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
patches/gamepad-bindings/README.md
+8
View File
@@ -0,0 +1,8 @@
### Description
Gamepad bindings to dwl. Press `LB + RB` toggle gamepad bindings.
### Download
- [2026-07-18](https://codeberg.org/dwl/dwl-patches/raw/branch/main/patches/gamepad-bindings/gamepad-bindings.patch)
### Authors
- [dhruva_sambrani](https://codeberg.org/dhruva_sambrani)
patches/gamepad-bindings/gamepad-bindings.patch
+423
View File
@@ -0,0 +1,423 @@
diff --git a/Makefile b/Makefile
index 578194f..601c70e 100644
--- a/Makefile
+++ b/Makefile
@@ -12,16 +12,17 @@ DWLDEVCFLAGS = -g -Wpedantic -Wall -Wextra -Wdeclaration-after-statement \
-Wfloat-conversion
# CFLAGS / LDFLAGS
-PKGS = wayland-server xkbcommon libinput $(XLIBS)
+PKGS = wayland-server xkbcommon libinput libevdev libudev $(XLIBS)
DWLCFLAGS = `$(PKG_CONFIG) --cflags $(PKGS)` $(WLR_INCS) $(DWLCPPFLAGS) $(DWLDEVCFLAGS) $(CFLAGS)
LDLIBS = `$(PKG_CONFIG) --libs $(PKGS)` $(WLR_LIBS) -lm $(LIBS)
all: dwl
-dwl: dwl.o util.o
- $(CC) dwl.o util.o $(DWLCFLAGS) $(LDFLAGS) $(LDLIBS) -o $@
-dwl.o: dwl.c client.h config.h config.mk cursor-shape-v1-protocol.h \
+dwl: dwl.o gamepad.o util.o
+ $(CC) dwl.o gamepad.o util.o $(DWLCFLAGS) $(LDFLAGS) $(LDLIBS) -o $@
+dwl.o: dwl.c client.h gamepad.h config.h config.mk cursor-shape-v1-protocol.h \
pointer-constraints-unstable-v1-protocol.h wlr-layer-shell-unstable-v1-protocol.h \
wlr-output-power-management-unstable-v1-protocol.h xdg-shell-protocol.h
+gamepad.o: gamepad.c gamepad.h
util.o: util.c util.h
# wayland-scanner is a tool which generates C headers and rigging for Wayland
@@ -54,7 +55,7 @@ clean:
dist: clean
mkdir -p dwl-$(VERSION)
cp -R LICENSE* Makefile CHANGELOG.md README.md client.h config.def.h \
- config.mk protocols dwl.1 dwl.c util.c util.h dwl.desktop \
+ config.mk protocols dwl.1 dwl.c gamepad.c gamepad.h util.c util.h dwl.desktop \
dwl-$(VERSION)
tar -caf dwl-$(VERSION).tar.gz dwl-$(VERSION)
rm -rf dwl-$(VERSION)
diff --git a/config.def.h b/config.def.h
index 8a6eda0..48270f6 100644
--- a/config.def.h
+++ b/config.def.h
@@ -165,6 +165,22 @@ static const Key keys[] = {
CHVT(7), CHVT(8), CHVT(9), CHVT(10), CHVT(11), CHVT(12),
};
+static const GamepadButton gamepadbuttons[] = {
+ { BTN_DPAD_DOWN, focusstack, {.i = +1} },
+ { BTN_DPAD_UP, focusstack, {.i = -1} },
+ { BTN_DPAD_LEFT, setmfact, {.f = -0.05f} },
+ { BTN_DPAD_RIGHT, setmfact, {.f = +0.05f} },
+ { BTN_SOUTH, zoom, {0} },
+ { BTN_EAST, setlayout, {.v = &layouts[0]} },
+ { BTN_NORTH, setlayout, {.v = &layouts[1]} },
+ { BTN_WEST, setlayout, {.v = &layouts[2]} },
+ { ABS_Z, focusmon, {.i = WLR_DIRECTION_LEFT} },
+ { ABS_RZ, focusmon, {.i = WLR_DIRECTION_RIGHT} },
+ { BTN_START, spawn, SHCMD("wmenu-run") },
+ { BTN_SELECT, winview, {0} },
+ { BTN_MODE, spawn, { "steam", NULL }},
+};
+
static const Button buttons[] = {
{ MODKEY, BTN_LEFT, moveresize, {.ui = CurMove} },
{ MODKEY, BTN_MIDDLE, togglefloating, {0} },
diff --git a/dwl.c b/dwl.c
index 101a45f..96e1c01 100644
--- a/dwl.c
+++ b/dwl.c
@@ -63,6 +63,7 @@
#include <wlr/util/log.h>
#include <wlr/util/region.h>
#include <xkbcommon/xkbcommon.h>
+#include "gamepad.h"
#ifdef XWAYLAND
#include <wlr/xwayland.h>
#include <xcb/xcb.h>
@@ -149,6 +150,12 @@ typedef struct {
const Arg arg;
} Key;
+typedef struct {
+ unsigned int button;
+ void (*func)(const Arg *);
+ const Arg arg;
+} GamepadButton;
+
typedef struct {
struct wlr_keyboard_group *wlr_group;
@@ -289,6 +296,7 @@ static void focusstack(const Arg *arg);
static Client *focustop(Monitor *m);
static void fullscreennotify(struct wl_listener *listener, void *data);
static void gpureset(struct wl_listener *listener, void *data);
+static void gamepadbutton(unsigned int button, int state);
static void handlesig(int signo);
static void incnmaster(const Arg *arg);
static void inputdevice(struct wl_listener *listener, void *data);
@@ -398,6 +406,7 @@ static struct wlr_session_lock_v1 *cur_lock;
static struct wlr_seat *seat;
static KeyboardGroup *kb_group;
+static struct gamepad *gamepad;
static unsigned int cursor_mode;
static Client *grabc;
static int grabcx, grabcy; /* client-relative */
@@ -713,6 +722,7 @@ cleanup(void)
wlr_xcursor_manager_destroy(cursor_mgr);
destroykeyboardgroup(&kb_group->destroy, NULL);
+ gamepad_destroy(gamepad);
/* 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 */
@@ -1558,6 +1568,21 @@ gpureset(struct wl_listener *listener, void *data)
wlr_renderer_destroy(old_drw);
}
+void
+gamepadbutton(unsigned int button, int state)
+{
+ const GamepadButton *b;
+ if (!state || locked)
+ return;
+ wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
+ for (b = gamepadbuttons; b < END(gamepadbuttons); b++) {
+ if (button == b->button && b->func) {
+ b->func(&b->arg);
+ break;
+ }
+ }
+}
+
void
handlesig(int signo)
{
@@ -2643,6 +2668,7 @@ setup(void)
kb_group = createkeyboardgroup();
wl_list_init(&kb_group->destroy.link);
+ gamepad = gamepad_create(event_loop, session, gamepadbutton);
output_mgr = wlr_output_manager_v1_create(dpy);
wl_signal_add(&output_mgr->events.apply, &output_mgr_apply);
diff --git a/gamepad.c b/gamepad.c
new file mode 100644
index 0000000..6bad2f6
--- /dev/null
+++ b/gamepad.c
@@ -0,0 +1,255 @@
+#include <fcntl.h>
+#include <libevdev/libevdev.h>
+#include <libudev.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <wayland-server-core.h>
+#include <wlr/backend/session.h>
+
+#include "gamepad.h"
+
+struct pad {
+ struct wl_list link;
+ char *path;
+ int fd;
+ struct libevdev *dev;
+ struct wl_event_source *src;
+ unsigned char key[KEY_CNT];
+ unsigned char abs[ABS_CNT];
+ int enabled;
+ GamepadHandler fn;
+};
+
+struct gamepad {
+ struct udev *udev;
+ struct udev_monitor *mon;
+ struct wl_event_source *msrc;
+ struct wl_event_loop *loop;
+ struct wl_list pads;
+ GamepadHandler fn;
+};
+
+static int
+ispad(struct udev_device *d)
+{
+ const char *p;
+
+ p = udev_device_get_property_value(d, "ID_INPUT_JOYSTICK");
+ return !strcmp(udev_device_get_subsystem(d), "input")
+ && !strncmp(udev_device_get_sysname(d), "event", 5)
+ && p && !strcmp(p, "1");
+}
+
+static void
+padstop(struct pad *p)
+{
+ if (p->src)
+ wl_event_source_remove(p->src);
+ if (p->dev)
+ libevdev_free(p->dev);
+ if (p->fd >= 0)
+ close(p->fd);
+ p->src = NULL;
+ p->dev = NULL;
+ p->fd = -1;
+}
+
+static void
+padclose(struct pad *p)
+{
+ padstop(p);
+ wl_list_remove(&p->link);
+ free(p->path);
+ free(p);
+}
+
+static int
+padin(int fd, uint32_t mask, void *data)
+{
+ struct pad *p = data;
+ struct input_event e;
+ int r, v;
+
+ if (mask & (WL_EVENT_HANGUP | WL_EVENT_ERROR)) {
+ padclose(p);
+ return 0;
+ }
+ while ((r = libevdev_next_event(p->dev, LIBEVDEV_READ_FLAG_NORMAL, &e)) == 0
+ || r == LIBEVDEV_READ_STATUS_SYNC) {
+ if (e.type == EV_KEY) {
+ v = !!e.value;
+ if (p->key[e.code] != v) {
+ p->key[e.code] = v;
+ if (p->enabled)
+ p->fn(e.code, v);
+ if ((e.code == BTN_TL || e.code == BTN_TR)
+ && p->key[BTN_TL] && p->key[BTN_TR] && v)
+ p->enabled ^= 1;
+ }
+ } else if (e.type == EV_ABS && (e.code == ABS_Z || e.code == ABS_RZ
+ || e.code == ABS_GAS || e.code == ABS_BRAKE)) {
+ const struct input_absinfo *a = libevdev_get_abs_info(p->dev, e.code);
+
+ v = e.value > (a->minimum + a->maximum) / 2;
+ if (p->abs[e.code] != v) {
+ p->abs[e.code] = v;
+ if (p->enabled)
+ p->fn(e.code, v);
+ }
+ } else if (e.type == EV_ABS && e.code == ABS_HAT0X) {
+ v = e.value + 1;
+ if (p->abs[e.code] != v) {
+ if (p->enabled) {
+ p->fn(BTN_DPAD_LEFT, 0);
+ p->fn(BTN_DPAD_RIGHT, 0);
+ }
+ p->abs[e.code] = v;
+ if (p->enabled) {
+ p->fn(BTN_DPAD_LEFT, e.value < 0);
+ p->fn(BTN_DPAD_RIGHT, e.value > 0);
+ }
+ }
+ } else if (e.type == EV_ABS && e.code == ABS_HAT0Y) {
+ v = e.value + 1;
+ if (p->abs[e.code] != v) {
+ if (p->enabled) {
+ p->fn(BTN_DPAD_UP, 0);
+ p->fn(BTN_DPAD_DOWN, 0);
+ }
+ p->abs[e.code] = v;
+ if (p->enabled) {
+ p->fn(BTN_DPAD_UP, e.value < 0);
+ p->fn(BTN_DPAD_DOWN, e.value > 0);
+ }
+ }
+ }
+ }
+ return 0;
+}
+
+static void
+padstart(struct pad *p, struct wl_event_loop *loop)
+{
+ if (p->fd >= 0 || (p->fd = open(p->path, O_RDONLY | O_NONBLOCK | O_CLOEXEC)) < 0)
+ return;
+ if (libevdev_new_from_fd(p->fd, &p->dev)) {
+ close(p->fd);
+ p->fd = -1;
+ return;
+ }
+ if (!(p->src = wl_event_loop_add_fd(loop, p->fd, WL_EVENT_READABLE, padin, p)))
+ padstop(p);
+}
+
+static void
+padadd(struct gamepad *g, struct udev_device *d)
+{
+ struct pad *p;
+ struct pad *q;
+ const char *path;
+
+ if (!ispad(d) || !(path = udev_device_get_devnode(d)))
+ return;
+ wl_list_for_each(q, &g->pads, link) {
+ if (!strcmp(q->path, path))
+ return;
+ }
+ if (!(p = calloc(1, sizeof(*p))))
+ return;
+ if (!(p->path = strdup(path))) {
+ free(p);
+ return;
+ }
+ p->fd = -1;
+ p->enabled = 1;
+ p->fn = g->fn;
+ wl_list_insert(&g->pads, &p->link);
+ padstart(p, g->loop);
+}
+
+static void
+padremove(struct gamepad *g, const char *path)
+{
+ struct pad *p, *t;
+
+ wl_list_for_each_safe(p, t, &g->pads, link) {
+ if (!strcmp(p->path, path)) {
+ padclose(p);
+ break;
+ }
+ }
+}
+
+static int
+monin(int fd, uint32_t mask, void *data)
+{
+ struct gamepad *g = data;
+ struct udev_device *d;
+ const char *a;
+ const char *path;
+
+ if (!(d = udev_monitor_receive_device(g->mon)))
+ return 0;
+ a = udev_device_get_action(d);
+ path = udev_device_get_devnode(d);
+ if (a && !strcmp(a, "add"))
+ padadd(g, d);
+ else if (a && !strcmp(a, "remove") && path)
+ padremove(g, path);
+ udev_device_unref(d);
+ return 0;
+}
+
+struct gamepad *
+gamepad_create(struct wl_event_loop *loop, struct wlr_session *s, GamepadHandler fn)
+{
+ struct gamepad *g;
+ struct udev_enumerate *e;
+ struct udev_list_entry *l;
+ struct udev_device *d;
+
+ if (!s || !(g = calloc(1, sizeof(*g))) || !(g->udev = udev_new()))
+ return NULL;
+ g->loop = loop;
+ g->fn = fn;
+ wl_list_init(&g->pads);
+ if ((e = udev_enumerate_new(g->udev))) {
+ udev_enumerate_add_match_subsystem(e, "input");
+ udev_enumerate_scan_devices(e);
+ udev_list_entry_foreach(l, udev_enumerate_get_list_entry(e)) {
+ d = udev_device_new_from_syspath(g->udev, udev_list_entry_get_name(l));
+ if (d) {
+ padadd(g, d);
+ udev_device_unref(d);
+ }
+ }
+ udev_enumerate_unref(e);
+ }
+ if (!(g->mon = udev_monitor_new_from_netlink(g->udev, "udev"))
+ || udev_monitor_filter_add_match_subsystem_devtype(g->mon, "input", NULL)
+ || udev_monitor_enable_receiving(g->mon)
+ || !(g->msrc = wl_event_loop_add_fd(loop, udev_monitor_get_fd(g->mon), WL_EVENT_READABLE, monin, g))) {
+ gamepad_destroy(g);
+ return NULL;
+ }
+ return g;
+}
+
+void
+gamepad_destroy(struct gamepad *g)
+{
+ struct pad *p, *t;
+
+ if (!g)
+ return;
+ wl_list_for_each_safe(p, t, &g->pads, link)
+ padclose(p);
+ if (g->msrc)
+ wl_event_source_remove(g->msrc);
+ if (g->mon)
+ udev_monitor_unref(g->mon);
+ if (g->udev)
+ udev_unref(g->udev);
+ free(g);
+}
diff --git a/gamepad.h b/gamepad.h
new file mode 100644
index 0000000..5d45d28
--- /dev/null
+++ b/gamepad.h
@@ -0,0 +1,15 @@
+#ifndef GAMEPAD_H
+#define GAMEPAD_H
+
+#include <linux/input.h>
+
+struct gamepad;
+struct wl_event_loop;
+struct wlr_session;
+
+typedef void (*GamepadHandler)(unsigned int, int);
+
+struct gamepad *gamepad_create(struct wl_event_loop *, struct wlr_session *, GamepadHandler);
+void gamepad_destroy(struct gamepad *);
+
+#endif