Modified AUR sway-git PKGBUILD w/ HiDPI Xwayland support -- only thing changed is the lines to apply scale.patch

PKGBUILD

# Maintainer: Drew DeVault <sir@cmpwn.com>
pkgname=sway-git
_pkgname=sway
pkgver=r6314.83d76980
pkgrel=1
license=("MIT")
pkgdesc="i3-compatible Wayland compositor"
makedepends=("meson" "git" "scdoc" "wayland-protocols" "ninja")
depends=(
	"json-c" "pcre" "wlroots-git" "cairo" "pango" "gdk-pixbuf2" "pam"
	"xorg-server-xwayland" "swaybg-git"
)
optdepends=(
	"alacritty: Default terminal emulator."
	"dmenu: Default for launching applications."
	"i3status: To display system information with a bar."
	"swayidle-git: Idle management daemon for Sway."
	"swaylock-git: Screen locker for Sway."
)
arch=("i686" "x86_64")
url="https://swaywm.org"
source=("${pkgname%-*}::git+https://github.com/swaywm/sway.git")
sha512sums=('SKIP')
provides=("sway")
conflicts=("sway")
options=(debug !strip)

pkgver() {
	cd "$_pkgname"
	printf "r%s.%s" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
}

prepare() {
	cd "$_pkgname"
	
	patch -Np1 -i ../../scale.patch
}

build() {
	cd "$_pkgname"
	meson \
		-Dwerror=false \
		--prefix /usr \
		"$srcdir/build"
	ninja -C "$srcdir/build"
}

package() {
	cd "$_pkgname"
	DESTDIR="$pkgdir" ninja -C "$srcdir/build" install
}

scale.patch

From 8454c809224a8da16f5c312020502ce6e6bfb42b Mon Sep 17 00:00:00 2001
From: Dario Nieuwenhuis <dirbaio@dirbaio.net>
Date: Mon, 10 Feb 2020 02:26:09 +0100
Subject: [PATCH] Make xwayland scale factor configurable via `xwayland scale`
 command.

---
 include/sway/commands.h          |  5 ++++
 include/sway/config.h            |  1 +
 sway/commands.c                  |  2 +-
 sway/commands/xwayland.c         | 46 ++++++++++++++++++++------------
 sway/commands/xwayland/disable.c | 15 +++++++++++
 sway/commands/xwayland/enable.c  | 15 +++++++++++
 sway/commands/xwayland/force.c   | 15 +++++++++++
 sway/commands/xwayland/scale.c   | 31 +++++++++++++++++++++
 sway/config.c                    |  1 +
 sway/desktop/xwayland.c          |  2 ++
 sway/meson.build                 |  5 ++++
 11 files changed, 120 insertions(+), 18 deletions(-)
 create mode 100644 sway/commands/xwayland/disable.c
 create mode 100644 sway/commands/xwayland/enable.c
 create mode 100644 sway/commands/xwayland/force.c
 create mode 100644 sway/commands/xwayland/scale.c

diff --git a/include/sway/commands.h b/include/sway/commands.h
index bbbdfc80e..1c60d10a0 100644
--- a/include/sway/commands.h
+++ b/include/sway/commands.h
@@ -290,6 +290,11 @@ sway_cmd seat_cmd_keyboard_grouping;
 sway_cmd seat_cmd_pointer_constraint;
 sway_cmd seat_cmd_xcursor_theme;
 
+sway_cmd xwayland_cmd_enable;
+sway_cmd xwayland_cmd_disable;
+sway_cmd xwayland_cmd_force;
+sway_cmd xwayland_cmd_scale;
+
 sway_cmd cmd_ipc_cmd;
 sway_cmd cmd_ipc_events;
 sway_cmd cmd_ipc_event_cmd;
diff --git a/include/sway/config.h b/include/sway/config.h
index 0a2661dd8..95528d570 100644
--- a/include/sway/config.h
+++ b/include/sway/config.h
@@ -513,6 +513,7 @@ struct sway_config {
 	enum sway_fowa focus_on_window_activation;
 	enum sway_popup_during_fullscreen popup_during_fullscreen;
 	enum xwayland_mode xwayland;
+	int32_t xwayland_scale;
 
 	// swaybg
 	char *swaybg_command;
diff --git a/sway/commands.c b/sway/commands.c
index 6a56ff5a9..c00be6eb8 100644
--- a/sway/commands.c
+++ b/sway/commands.c
@@ -97,6 +97,7 @@ static struct cmd_handler handlers[] = {
 	{ "unbindsym", cmd_unbindsym },
 	{ "workspace", cmd_workspace },
 	{ "workspace_auto_back_and_forth", cmd_ws_auto_back_and_forth },
+	{ "xwayland", cmd_xwayland },
 };
 
 /* Config-time only commands. Keep alphabetized */
@@ -105,7 +106,6 @@ static struct cmd_handler config_handlers[] = {
 	{ "swaybg_command", cmd_swaybg_command },
 	{ "swaynag_command", cmd_swaynag_command },
 	{ "workspace_layout", cmd_workspace_layout },
-	{ "xwayland", cmd_xwayland },
 };
 
 /* Runtime-only commands. Keep alphabetized */
diff --git a/sway/commands/xwayland.c b/sway/commands/xwayland.c
index 6ca269231..1c4218c44 100644
--- a/sway/commands/xwayland.c
+++ b/sway/commands/xwayland.c
@@ -4,27 +4,39 @@
 #include "sway/server.h"
 #include "util.h"
 
-struct cmd_results *cmd_xwayland(int argc, char **argv) {
-	struct cmd_results *error = NULL;
-	if ((error = checkarg(argc, "xwayland", EXPECTED_EQUAL_TO, 1))) {
-		return error;
-	}
+// must be in order for the bsearch
+static struct cmd_handler xwayland_handlers[] = {
+	{ "enable", xwayland_cmd_enable },
+	{ "disable", xwayland_cmd_disable },
+	{ "force", xwayland_cmd_force },
+	{ "scale", xwayland_cmd_scale },
+};
 
+struct cmd_results *cmd_xwayland(int argc, char **argv) {
 #ifdef HAVE_XWAYLAND
-	enum xwayland_mode xwayland;
-	if (strcmp(argv[0], "force") == 0) {
-		xwayland = XWAYLAND_MODE_IMMEDIATE;
-	} else if (parse_boolean(argv[0], true)) {
-		xwayland = XWAYLAND_MODE_LAZY;
-	} else {
-		xwayland = XWAYLAND_MODE_DISABLED;
-	}
+	struct cmd_results *error;
+	while (argc > 0) {
+		config->handler_context.leftovers.argc = 0;
+		config->handler_context.leftovers.argv = NULL;
 
-	if (config->reloading && config->xwayland != xwayland) {
-		return cmd_results_new(CMD_FAILURE,
-				"xwayland can only be enabled/disabled at launch");
+		if (find_handler(*argv, xwayland_handlers, sizeof(xwayland_handlers))) {
+			error = config_subcommand(argv, argc, xwayland_handlers,
+					sizeof(xwayland_handlers));
+		} else {
+			error = cmd_results_new(CMD_INVALID,
+				"Invalid output subcommand: %s.", *argv);
+		}
+
+		if (error != NULL) {
+			return error;
+		}
+
+		argc = config->handler_context.leftovers.argc;
+		argv = config->handler_context.leftovers.argv;
 	}
-	config->xwayland = xwayland;
+
+	config->handler_context.leftovers.argc = 0;
+	config->handler_context.leftovers.argv = NULL;
 #else
 	sway_log(SWAY_INFO, "Ignoring `xwayland` command, "
 		"sway hasn't been built with Xwayland support");
diff --git a/sway/commands/xwayland/disable.c b/sway/commands/xwayland/disable.c
new file mode 100644
index 000000000..e6efe3edd
--- /dev/null
+++ b/sway/commands/xwayland/disable.c
@@ -0,0 +1,15 @@
+#include "sway/commands.h"
+#include "sway/config.h"
+
+struct cmd_results *xwayland_cmd_disable(int argc, char **argv) {
+	if (config->reloading && config->xwayland != XWAYLAND_MODE_DISABLED) {
+		return cmd_results_new(CMD_FAILURE,
+				"xwayland can only be enabled/disabled at launch");
+	}
+
+	config->xwayland = XWAYLAND_MODE_DISABLED;
+
+	config->handler_context.leftovers.argc = argc;
+	config->handler_context.leftovers.argv = argv;
+	return NULL;
+}
diff --git a/sway/commands/xwayland/enable.c b/sway/commands/xwayland/enable.c
new file mode 100644
index 000000000..8dc47434a
--- /dev/null
+++ b/sway/commands/xwayland/enable.c
@@ -0,0 +1,15 @@
+#include "sway/commands.h"
+#include "sway/config.h"
+
+struct cmd_results *xwayland_cmd_enable(int argc, char **argv) {
+	if (config->reloading && config->xwayland != XWAYLAND_MODE_LAZY) {
+		return cmd_results_new(CMD_FAILURE,
+				"xwayland can only be enabled/disabled at launch");
+	}
+	config->xwayland = XWAYLAND_MODE_LAZY;
+
+	config->handler_context.leftovers.argc = argc;
+	config->handler_context.leftovers.argv = argv;
+	return NULL;
+}
+
diff --git a/sway/commands/xwayland/force.c b/sway/commands/xwayland/force.c
new file mode 100644
index 000000000..a9374a802
--- /dev/null
+++ b/sway/commands/xwayland/force.c
@@ -0,0 +1,15 @@
+#include "sway/commands.h"
+#include "sway/config.h"
+
+struct cmd_results *xwayland_cmd_force(int argc, char **argv) {
+	if (config->reloading && config->xwayland != XWAYLAND_MODE_IMMEDIATE) {
+		return cmd_results_new(CMD_FAILURE,
+				"xwayland can only be enabled/disabled at launch");
+	}
+	config->xwayland = XWAYLAND_MODE_IMMEDIATE;
+
+	config->handler_context.leftovers.argc = argc;
+	config->handler_context.leftovers.argv = argv;
+	return NULL;
+}
+
diff --git a/sway/commands/xwayland/scale.c b/sway/commands/xwayland/scale.c
new file mode 100644
index 000000000..f1b82a040
--- /dev/null
+++ b/sway/commands/xwayland/scale.c
@@ -0,0 +1,31 @@
+#include <strings.h>
+#include "sway/commands.h"
+#include "sway/config.h"
+#include "sway/server.h"
+#include "log.h"
+
+struct cmd_results *xwayland_cmd_scale(int argc, char **argv) {
+	if (!argc) {
+		return cmd_results_new(CMD_INVALID, "Missing scale argument.");
+	}
+
+	char *end;
+	int32_t scale = strtol(*argv, &end, 10);
+	if (*end) {
+		return cmd_results_new(CMD_INVALID, "Invalid scale.");
+	}
+	if(scale < 1) {
+		return cmd_results_new(CMD_INVALID, "Invalid scale: must be 1 or higher");
+	}
+	
+	config->xwayland_scale = scale;
+
+	if(server.xwayland.wlr_xwayland != NULL) {
+		wlr_xwayland_set_scale(server.xwayland.wlr_xwayland, scale);
+	}
+
+	config->handler_context.leftovers.argc = argc - 1;
+	config->handler_context.leftovers.argv = argv + 1;
+
+	return NULL;
+}
diff --git a/sway/config.c b/sway/config.c
index c20625cfc..4392c6059 100644
--- a/sway/config.c
+++ b/sway/config.c
@@ -243,6 +243,7 @@ static void config_defaults(struct sway_config *config) {
 	config->urgent_timeout = 500;
 	config->popup_during_fullscreen = POPUP_SMART;
 	config->xwayland = XWAYLAND_MODE_LAZY;
+	config->xwayland_scale = 1;
 
 	config->titlebar_border_thickness = 1;
 	config->titlebar_h_padding = 5;
diff --git a/sway/desktop/xwayland.c b/sway/desktop/xwayland.c
index 2554d0e46..10954413a 100644
--- a/sway/desktop/xwayland.c
+++ b/sway/desktop/xwayland.c
@@ -680,6 +680,8 @@ void handle_xwayland_ready(struct wl_listener *listener, void *data) {
 		wl_container_of(listener, server, xwayland_ready);
 	struct sway_xwayland *xwayland = &server->xwayland;
 
+	wlr_xwayland_set_scale(xwayland->wlr_xwayland, config->xwayland_scale);
+
 	xcb_connection_t *xcb_conn = xcb_connect(NULL, NULL);
 	int err = xcb_connection_has_error(xcb_conn);
 	if (err) {
diff --git a/sway/meson.build b/sway/meson.build
index 6fdc4a7d5..8f21ec555 100644
--- a/sway/meson.build
+++ b/sway/meson.build
@@ -189,6 +189,11 @@ sway_sources = files(
 	'commands/output/toggle.c',
 	'commands/output/transform.c',
 
+	'commands/xwayland/enable.c',
+	'commands/xwayland/disable.c',
+	'commands/xwayland/force.c',
+	'commands/xwayland/scale.c',
+
 	'tree/arrange.c',
 	'tree/container.c',
 	'tree/node.c',