From d9a5450de935c8cc1089e910fc4c391ae4c9512b Mon Sep 17 00:00:00 2001
From: Neal Gompa <neal@gompa.dev>
Date: Wed, 12 Mar 2025 23:56:08 -0400
Subject: [PATCH] Add initial support for Miriway

Miriway is a new generic compositor built on the Mir compositor
library that is designed to be used as part of composable desktop
environments.
---
 configurations/CMakeLists.txt               |  2 +
 configurations/miriway/lxqt-miriway-wrapper | 72 +++++++++++++++++++++
 configurations/miriway/miriway-shell.config | 22 +++++++
 startlxqtwayland.in                         | 10 +++
 4 files changed, 106 insertions(+)
 create mode 100755 configurations/miriway/lxqt-miriway-wrapper
 create mode 100644 configurations/miriway/miriway-shell.config

diff --git a/configurations/CMakeLists.txt b/configurations/CMakeLists.txt
index 02ab38d..153a7f1 100644
--- a/configurations/CMakeLists.txt
+++ b/configurations/CMakeLists.txt
@@ -17,6 +17,8 @@ install(FILES
 install(DIRECTORY
     labwc
     firstrun
+    miriway
+    USE_SOURCE_PERMISSIONS
     DESTINATION "${CMAKE_INSTALL_DATADIR}/lxqt/wayland"
     COMPONENT Runtime
 )
diff --git a/configurations/miriway/lxqt-miriway-wrapper b/configurations/miriway/lxqt-miriway-wrapper
new file mode 100755
index 0000000..3e4b53d
--- /dev/null
+++ b/configurations/miriway/lxqt-miriway-wrapper
@@ -0,0 +1,72 @@
+#!/bin/sh
+
+unset WAYLAND_DISPLAY
+unset DISPLAY
+
+port=0
+while [ -e "${XDG_RUNTIME_DIR}/wayland-${port}" ]; do
+    let port+=1
+done
+wayland_display=wayland-${port}
+
+export WAYLAND_DISPLAY=${wayland_display}
+
+# Support Xwayland when available
+if command -v Xwayland > /dev/null
+then
+  export MIR_SERVER_ENABLE_X11=1
+  MIR_SERVER_XWAYLAND_PATH=$(which Xwayland)
+  export MIR_SERVER_XWAYLAND_PATH
+fi
+
+# Imperfect workaround for layer-shell-qt bug
+# Cf. https://bugs.kde.org/show_bug.cgi?id=500520
+export MIR_ANCHOR_RECTANGLE_UNCONSTRAINED=1
+
+# Use server side decorations whenever possible
+export MIRIWAY_DECORATIONS="prefer-ssd"
+
+# Look in the LXQt namespace for LXQt Miriway configuration
+export MIRIWAY_CONFIG_DIR="lxqt"
+
+# If enabling Xwayland, set up tmpfile to identify X11 DISPLAY
+if [ $MIR_SERVER_ENABLE_X11 -eq 1 ]; then
+    x11_display_file=$(mktemp --tmpdir="${XDG_RUNTIME_DIR}")
+fi
+
+miriway-shell --display-config=static="${XDG_CONFIG_HOME}/miriway-shell.display-config" --add-wayland-extensions=all --lockscreen-app="lxqt-leave --lockscreen" --x11-displayfd 5 5>${x11_display_file} &
+miriway_pid=$!
+
+# Wait until the server starts
+until [ -O "${XDG_RUNTIME_DIR}/${WAYLAND_DISPLAY}" ]
+do
+  if ! kill -0 ${miriway_pid} &> /dev/null
+  then
+    echo "ERROR: miriway-shell [pid=${miriway_pid}] is not running"
+    exit 1
+  fi
+  inotifywait -qq --timeout 5 --event create "$(dirname "${XDG_RUNTIME_DIR}/${WAYLAND_DISPLAY}")"
+done
+
+# Grab the X11 DISPLAY and export it if needed
+if [ $MIR_SERVER_ENABLE_X11 -eq 1 ]; then
+  if inotifywait -qq --timeout 5 --event close_write "${x11_display_file}" && [ -s "${x11_display_file}" ]
+  then
+    # ${x11_display_file} contains the X11 display
+    DISPLAY=:$(cat "${x11_display_file}")
+    export DISPLAY
+    rm "${x11_display_file}"
+  else
+    echo "ERROR: Failed to get X11 display from miriway-shell [pid=${miriway-pid}]"
+    rm "${x11_display_file}"
+    kill ${miriway_pid}
+    exit 1
+  fi
+fi
+
+lxqt-session "$@"
+lxqt_session_exit_code=$?
+
+kill $miriway_pid
+
+exit $lxqt_session_exit_code
diff --git a/configurations/miriway/miriway-shell.config b/configurations/miriway/miriway-shell.config
new file mode 100644
index 0000000..3b20d82
--- /dev/null
+++ b/configurations/miriway/miriway-shell.config
@@ -0,0 +1,22 @@
+x11-window-title=LXQt (Miriway)
+idle-timeout=600
+
+shell-component=dbus-update-activation-environment --systemd DISPLAY WAYLAND_DISPLAY XDG_SESSION_TYPE XDG_CURRENT_DESKTOP
+
+shell-alt=Space:lxqt-runner
+shell-alt=F2:lxqt-runner
+shell-meta=l:lxqt-leave --lockscreen
+
+meta=p:pcmanfm-qt
+meta=Return:qterminal
+meta=f:featherpad
+
+meta=Left:@dock-left
+meta=Right:@dock-right
+meta=Space:@toggle-maximized
+meta=Home:@workspace-begin
+meta=End:@workspace-end
+meta=Page_Up:@workspace-up
+meta=Page_Down:@workspace-down
+ctrl-alt=BackSpace:@exit
+ctrl-alt=Up:@toggle-always-on-top
diff --git a/startlxqtwayland.in b/startlxqtwayland.in
index d37ddc9..777a72a 100644
--- a/startlxqtwayland.in
+++ b/startlxqtwayland.in
@@ -141,6 +141,16 @@ elif [ "$COMPOSITOR" = "kwin_wayland" ]; then
     # WARNING: Option '--no-kactivities' can result in crashes with animations and corner actions.
     exec ${COMPOSITOR}_wrapper --exit-with-session lxqt-session --xwayland
 
+elif [ "$COMPOSITOR" = "miriway" ]; then
+    export XDG_CURRENT_DESKTOP="LXQt:$COMPOSITOR:mir"
+    if [ ! -f "$XDG_CONFIG_HOME/lxqt/miriway-shell.config" ]; then
+        cp "$share_dir"/lxqt/wayland/miriway/miriway-shell.config "$XDG_CONFIG_HOME/lxqt/miriway-shell.config"
+       if echo "$valid_layouts" | grep -q "$trylayout"; then
+          echo "keymap=$trylayout" >> "$XDG_CONFIG_HOME/lxqt/miriway-shell.config"
+       fi
+    fi
+    exec "${share_dir}/lxqt/wayland/${COMPOSITOR}/lxqt-${COMPOSITOR}-wrapper"
+
 elif [ "$COMPOSITOR" = "wayfire" ]; then
     if [ ! -f "$XDG_CONFIG_HOME/lxqt/wayland/lxqt-wayfire.ini" ]; then
         cp "$share_dir"/lxqt/wayland/lxqt-wayfire.ini "$XDG_CONFIG_HOME"/lxqt/wayland/