display_status: Separate out M73 and M117 handling to new module

Move M73 and M117 handling from display.py to a new display_status.py
module.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

klippy/extras/display_status.py

@@ -0,0 +1,52 @@
+# Module to handle M73 and M117 display status commands
+#
+# Copyright (C) 2018-2020  Kevin O'Connor <kevin@koconnor.net>
+# Copyright (C) 2018  Eric Callahan <arksine.code@gmail.com>
+#
+# This file may be distributed under the terms of the GNU GPLv3 license.
+
+M73_TIMEOUT = 5.
+
+class DisplayStatus:
+    def __init__(self, config):
+        self.printer = config.get_printer()
+        self.expire_progress = 0.
+        self.progress = self.message = None
+        # Register commands
+        gcode = self.printer.lookup_object('gcode')
+        gcode.register_command('M73', self.cmd_M73)
+        gcode.register_command('M117', self.cmd_M117)
+    def get_status(self, eventtime):
+        progress = self.progress
+        if progress is not None and eventtime > self.expire_progress:
+            idle_timeout = self.printer.lookup_object('idle_timeout')
+            idle_timeout_info = idle_timeout.get_status(eventtime)
+            if idle_timeout_info['state'] != "Printing":
+                self.progress = progress = None
+        if progress is None:
+            progress = 0.
+            sdcard = self.printer.lookup_object('virtual_sdcard', None)
+            if sdcard is not None:
+                progress = sdcard.get_status(eventtime)['progress']
+        return { 'progress': progress, 'message': self.message }
+    def cmd_M73(self, params):
+        gcode = self.printer.lookup_object('gcode')
+        progress = gcode.get_float('P', params, 0.) / 100.
+        self.progress = min(1., max(0., progress))
+        curtime = self.printer.get_reactor().monotonic()
+        self.expire_progress = curtime + M73_TIMEOUT
+    def cmd_M117(self, params):
+        msg = params['#original']
+        umsg = msg.upper()
+        if not umsg.startswith('M117'):
+            # Parse out additional info if M117 recd during a print
+            start = umsg.find('M117')
+            end = msg.rfind('*')
+            msg = msg[start:end]
+        if len(msg) > 5:
+            self.message = msg[5:]
+        else:
+            self.message = None
+
+def load_config(config):
+    return DisplayStatus(config)