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"""The virtual monitor half: a headless Hyprland output sized to the tablet."""
import json
import re
import shutil
import subprocess
import sys
import time
from pathlib import Path
def run(cmd, timeout=2):
try:
return subprocess.run(cmd, capture_output=True, text=True, timeout=timeout).stdout.strip()
except (OSError, subprocess.TimeoutExpired):
return ""
def tablet_resolution(cfg: dict, adb=None) -> str:
res = cfg.get("display", {}).get("resolution", "auto")
if res != "auto":
return res
read = adb or (lambda: run(["adb", "shell", "wm", "size"]))
m = re.search(r"(\d+)x(\d+)", read())
if not m:
sys.exit("Could not read the tablet resolution; set display.resolution in the config")
w, h = sorted(map(int, m.groups()), reverse=True)
return f"{w}x{h}"
def hypr_lua(cfg: dict) -> bool:
mode = cfg.get("hyprland", "auto")
if mode == "auto":
return (Path.home() / ".config/hypr/hyprland.lua").is_file()
return mode == "lua"
def setup_display(cfg: dict, run_cmd=None) -> None:
run_cmd = run_cmd or run
d = cfg.get("display", {})
mon = d.get("name", "TAB")
monitors = json.loads(run_cmd(["hyprctl", "monitors", "-j"]) or "[]")
if not any(m["name"] == mon for m in monitors):
run_cmd(["hyprctl", "output", "create", "headless", mon])
time.sleep(1)
mode = f"{tablet_resolution(cfg)}@{d.get('refresh', 60)}"
pos = d.get("position", "auto-right")
scale = d.get("scale", 1)
if hypr_lua(cfg):
run_cmd(["hyprctl", "eval",
f'hl.monitor({{output="{mon}", mode="{mode}", position="{pos}", scale={scale}}})'])
else:
run_cmd(["hyprctl", "keyword", "monitor", f"{mon},{mode},{pos},{scale}"])
tool = shutil.which("awww") or shutil.which("swww")
if d.get("wallpaper", True) and tool:
others = [m["name"] for m in monitors if m["name"] != mon]
for line in run_cmd([tool, "query"]).splitlines():
if others and others[0] in line and "image: " in line:
run_cmd([tool, "img", "-o", mon, line.split("image: ", 1)[1]], timeout=10)
break
print(f"{mon}: {mode} at {pos}")
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