Capture the whole screen before region seleciton

.bin/wscreenshot.py

@@ -6,9 +6,17 @@ from gi.repository import Gtk, GLib
 import time
 import sys
 import os
-from subprocess import run
+import json
+import atexit
+from subprocess import run, Popen, PIPE
 from urllib.parse import urljoin
 
+image_viewers = []
+def kill_image_viewers():
+    for viewer in image_viewers:
+        viewer.terminate()
+atexit.register(kill_image_viewers)
+
 file_name = GLib.get_user_special_dir(GLib.UserDirectory.DIRECTORY_PICTURES)
 file_name = os.path.join(file_name, time.strftime('screenshot_%Y-%m-%d-%H%M%S_grim.png'))
 
@@ -18,17 +26,29 @@ else:
     if sys.argv[1] in ('-h','--help'):
         print("Usage: {} [-h|--help|--region|--window]".format(sys.argv[0]))
         sys.exit(0)
+
     elif sys.argv[1] == '--region':
+        outputs = run(['swaymsg', '-t', 'get_outputs'], check=True, capture_output=True)
+        for output in json.loads(outputs.stdout):
+            image = Popen(["grim", "-o", f"{output.get('name')}", '-'], stdout=PIPE)
+            viewer = Popen(['swayimg', '-f', '-o', f'{output.get("name")}','-'], stdin=image.stdout)
+            image_viewers.append(viewer)
+
+        time.sleep(0.3)
+
         region = run('slurp', check=True, capture_output=True)
         run(["grim", '-g', '-', file_name], check=True, input=region.stdout)
+
     elif sys.argv[1] == '--window':
         tree = run(['swaymsg', '-t', 'get_tree'], check=True, capture_output=True)
         regions = run(['jq', '-r', '.. | select(.pid? and .visible?) | .rect | "\(.x),\(.y) \(.width)x\(.height)"'],
                 check=True, capture_output=True, input=tree.stdout)
         region = run('slurp', check=True, capture_output=True, input=regions.stdout)
         run(["grim", '-g', '-', file_name], check=True, input=region.stdout)
+
     else:
         sys.exit(1)
+
 # Add created screenshot to Gtk recents list
 recent_mgr = Gtk.RecentManager.get_default()
 uri = urljoin("file:", file_name)