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From 2e1123af5c7ae4354ec997d59cb36143fb2fdd27 Mon Sep 17 00:00:00 2001
From: wochap <gean.marroquin@gmail.com>
Date: Mon, 8 Apr 2024 10:23:40 -0500
Subject: [PATCH] feat: implement headless backend
---
config.def.h | 1 +
dwl.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 59 insertions(+)
diff --git a/config.def.h b/config.def.h
index db0babc..f0a2080 100644
--- a/config.def.h
+++ b/config.def.h
@@ -141,6 +141,7 @@ static const Key keys[] = {
{ MODKEY, XKB_KEY_period, focusmon, {.i = WLR_DIRECTION_RIGHT} },
{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_less, tagmon, {.i = WLR_DIRECTION_LEFT} },
{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_greater, tagmon, {.i = WLR_DIRECTION_RIGHT} },
+ { MODKEY|WLR_MODIFIER_CTRL|WLR_MODIFIER_SHIFT, XKB_KEY_M, create_output, {0} },
TAGKEYS( XKB_KEY_1, XKB_KEY_exclam, 0),
TAGKEYS( XKB_KEY_2, XKB_KEY_at, 1),
TAGKEYS( XKB_KEY_3, XKB_KEY_numbersign, 2),
diff --git a/dwl.c b/dwl.c
index ef27a1d..79a63b0 100644
--- a/dwl.c
+++ b/dwl.c
@@ -12,7 +12,10 @@
#include <unistd.h>
#include <wayland-server-core.h>
#include <wlr/backend.h>
+#include <wlr/backend/headless.h>
#include <wlr/backend/libinput.h>
+#include <wlr/backend/multi.h>
+#include <wlr/backend/wayland.h>
#include <wlr/render/allocator.h>
#include <wlr/render/wlr_renderer.h>
#include <wlr/types/wlr_compositor.h>
@@ -58,6 +61,9 @@
#include <xcb/xcb.h>
#include <xcb/xcb_icccm.h>
#endif
+#if WLR_HAS_X11_BACKEND
+#include <wlr/backend/x11.h>
+#endif
#include "util.h"
@@ -327,6 +333,8 @@ static Monitor *xytomon(double x, double y);
static void xytonode(double x, double y, struct wlr_surface **psurface,
Client **pc, LayerSurface **pl, double *nx, double *ny);
static void zoom(const Arg *arg);
+static void _create_output(struct wlr_backend *backend, void *data);
+static void create_output(const Arg *arg);
/* variables */
static const char broken[] = "broken";
@@ -335,6 +343,7 @@ static int locked;
static void *exclusive_focus;
static struct wl_display *dpy;
static struct wlr_backend *backend;
+static struct wlr_backend *headless_backend;
static struct wlr_scene *scene;
static struct wlr_scene_tree *layers[NUM_LAYERS];
static struct wlr_scene_tree *drag_icon;
@@ -2321,6 +2330,16 @@ setup(void)
cursor_shape_mgr = wlr_cursor_shape_manager_v1_create(dpy, 1);
LISTEN_STATIC(&cursor_shape_mgr->events.request_set_shape, setcursorshape);
+ /**
+ * Initialize headless backend
+ */
+ headless_backend = wlr_headless_backend_create(dpy);
+ if (!headless_backend) {
+ die("Failed to create secondary headless backend");
+ } else {
+ wlr_multi_backend_add(backend, headless_backend);
+ }
+
/*
* Configures a seat, which is a single "seat" at which a user sits and
* operates the computer. This conceptually includes up to one keyboard,
@@ -2746,6 +2765,45 @@ zoom(const Arg *arg)
arrange(selmon);
}
+void
+_create_output(struct wlr_backend *_backend, void *data)
+{
+ bool *done = data;
+ if (*done) {
+ return;
+ }
+
+ if (wlr_backend_is_wl(_backend)) {
+ wlr_wl_output_create(_backend);
+ *done = true;
+ } else if (wlr_backend_is_headless(_backend)) {
+ wlr_headless_add_output(_backend, 1920, 1080);
+ *done = true;
+ }
+#if WLR_HAS_X11_BACKEND
+ else if (wlr_backend_is_x11(backend)) {
+ wlr_x11_output_create(backend);
+ *done = true;
+ }
+#endif
+}
+
+void
+create_output(const Arg *arg)
+{
+ bool done = false;
+
+ if (!wlr_backend_is_multi(backend)) {
+ die("Expected a multi backend");
+ }
+
+ wlr_multi_for_each_backend(backend, _create_output, &done);
+
+ if (!done) {
+ die("Can only create outputs for Wayland, X11 or headless backends");
+ }
+}
+
#ifdef XWAYLAND
void
activatex11(struct wl_listener *listener, void *data)
--
2.43.2
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