Added option to disable analysis of gcode upon loading a file for print. Disabling this allows for a faster loading time (especially on a Raspberry Pi) but with the disadvantage of losing information regarding estimated filament length and print time.

README.md

@@ -5,7 +5,8 @@ The Printer WebUI provides a responsive web interface for controlling a 3D print
 allows
 
 * uploading .gcode files to the server and managing them via the UI
-* selecting a file for printing, getting the usual stats regarding filament length etc
+* selecting a file for printing, getting the usual stats regarding filament length etc (stats can be disabled for
+  faster initial processing)
 * starting, pausing and canceling a print job
 * while connected to the printer, gaining information regarding the current temperature of both head and bed (if available) in a nice shiny javascript-y temperature graph
 * while printing, gaining information regarding the current progress of the print job (height, percentage etc)
@@ -49,40 +50,54 @@ Alternatively, the host and port on which to bind can be defined via the configu
 Configuration
 -------------
 
-The config-file `config.ini` for Printer WebUI is expected at `~/.printerwebui` for Linux, at `%APPDATA%/PrinterWebUI`
-for Windows and at `~/Library/Application Support` for MacOS X.
+The config-file `config.ini` for Printer WebUI is expected in its settings folder, which is located at `~/.printerwebui`
+on Linux, at `%APPDATA%/PrinterWebUI` on Windows and at `~/Library/Application Support` on MacOS X.
 
 The following example config should explain the available options:
 
     [serial]
-    # use the following option to define the default serial port, defaults to unset (= AUTO)
+    # Use the following option to define the default serial port, defaults to unset (= AUTO)
     port = /dev/ttyACM0
-    # use the following option to define the default baudrate, defaults to unset (= AUTO)
+
+    # Use the following option to define the default baudrate, defaults to unset (= AUTO)
     baudrate = 115200
 
     [server]
-    # use this option to define the host to which to bind the server, defaults to "0.0.0.0" (= all interfaces)
+    # Use this option to define the host to which to bind the server, defaults to "0.0.0.0" (= all interfaces)
     host = 0.0.0.0
-    # use this option to define the port to which to bind the server, defaults to 5000
+
+    # Use this option to define the port to which to bind the server, defaults to 5000
     port = 5000
 
     [webcam]
-    # use this option to enable display of a webcam stream in the UI, e.g. via MJPG-Streamer.
+    # Use this option to enable display of a webcam stream in the UI, e.g. via MJPG-Streamer.
     # Webcam support will be disabled if not set
     stream = http://<stream host>:<stream port>/?action=stream
-    # use this option to enable timelapse support via snapshot, e.g. via MJPG-Streamer.
+
+    # Use this option to enable timelapse support via snapshot, e.g. via MJPG-Streamer.
     # Timelapse support will be disabled if not set
     snapshot = http://<stream host>:<stream port>/?action=snapshot
-    # path to ffmpeg binary to use for creating timelapse recordings.
+
+    # Path to ffmpeg binary to use for creating timelapse recordings.
     # Timelapse support will be disabled if not set
     ffmpeg = /path/to/ffmpeg
 
+    [feature]
+    # Whether to enable gcode analysis for displaying needed filament and estimated print time. Disabling this (set
+    # to False) will speed up the loading of gcode files before printing significantly, but the mentioned statistical
+    # data will not be available
+    analyzeGcode = True
+
     [folder]
-    # absolute path where to store gcode uploads. Defaults to the uploads folder in the Printer WebUI settings dir
+    # Absolute path where to store gcode uploads. Defaults to the uploads folder in the Printer WebUI settings folder
     uploads = /path/to/upload/folder
-    # absolute path where to store finished timelapse recordings. Defaults to the timelapse folder in the Printer WebUI settings dir
+
+    # Absolute path where to store finished timelapse recordings. Defaults to the timelapse folder in the Printer WebUI
+    # settings dir
     timelapse = /path/to/timelapse/folder
-    # absolute path where to store temporary timelapse files. Defaults to the timelapse/tmp folder in the Printer WebUI settings dir
+
+    # Absolute path where to store temporary timelapse files. Defaults to the timelapse/tmp folder in the Printer WebUI
+    # settings dir
     timelapse_tmp = /path/timelapse/tmp/folder
 
 Setup on a Raspberry Pi running Raspbian

printer_webui/printer.py

@@ -295,6 +295,9 @@ class Printer():
 				formattedPrintTimeEstimation = _getFormattedTimeDelta(datetime.timedelta(minutes=self._gcode.totalMoveTimeMinute))
 			if self._gcode.extrusionAmount:
 				formattedFilament = "%.2fm" % (self._gcode.extrusionAmount / 1000)
+		elif not settings().getBoolean("feature", "analyzeGcode"):
+			formattedPrintTimeEstimation = "unknown"
+			formattedFilament = "unknown"
 
 		formattedFilename = None
 		if self._filename:
@@ -385,12 +388,12 @@ class Printer():
 
 	#~~ callbacks triggered by gcodeLoader
 
-	def _onGcodeLoadingProgress(self, filename, progress):
+	def _onGcodeLoadingProgress(self, filename, progress, mode):
 		formattedFilename = None
 		if filename is not None:
 			formattedFilename = os.path.basename(filename)
 
-		self._stateMonitor.setGcodeData({"filename": formattedFilename, "progress": progress})
+		self._stateMonitor.setGcodeData({"filename": formattedFilename, "progress": progress, "mode": mode})
 
 	def _onGcodeLoaded(self, filename, gcode, gcodeList):
 		formattedFilename = None
@@ -464,8 +467,6 @@ class GcodeLoader(threading.Thread):
 		self._loadedCallback = loadedCallback
 
 		self._filename = filename
-		self._progress = None
-
 		self._gcode = None
 		self._gcodeList = None
 
@@ -473,6 +474,7 @@ class GcodeLoader(threading.Thread):
 		#Send an initial M110 to reset the line counter to zero.
 		prevLineType = lineType = "CUSTOM"
 		gcodeList = ["M110"]
+		filesize = os.stat(self._filename).st_size
 		with open(self._filename, "r") as file:
 			for line in file:
 				if line.startswith(";TYPE:"):
@@ -486,17 +488,21 @@ class GcodeLoader(threading.Thread):
 					else:
 						gcodeList.append(line)
 					prevLineType = lineType
+				self._onLoadingProgress(float(file.tell()) / float(filesize))
 
 		self._gcodeList = gcodeList
-		self._gcode = gcodeInterpreter.gcode()
-		self._gcode.progressCallback = self.onProgress
-		self._gcode.loadList(self._gcodeList)
+		if settings().getBoolean("feature", "analyzeGcode"):
+			self._gcode = gcodeInterpreter.gcode()
+			self._gcode.progressCallback = self._onParsingProgress
+			self._gcode.loadList(self._gcodeList)
 
 		self._loadedCallback(self._filename, self._gcode, self._gcodeList)
 
-	def onProgress(self, progress):
-		self._progress = progress
-		self._progressCallback(self._filename, self._progress)
+	def _onLoadingProgress(self, progress):
+		self._progressCallback(self._filename, progress, "loading")
+
+	def _onParsingProgress(self, progress):
+		self._progressCallback(self._filename, progress, "parsing")
 
 class PrinterCallback(object):
 	def sendCurrentData(self, data):

printer_webui/server.py

@@ -27,7 +27,8 @@ def index():
 	return render_template(
 		"index.html",
 		webcamStream=settings().get("webcam", "stream"),
-		enableTimelapse=(settings().get("webcam", "snapshot") is not None and settings().get("webcam", "ffmpeg") is not None)
+		enableTimelapse=(settings().get("webcam", "snapshot") is not None and settings().get("webcam", "ffmpeg") is not None),
+		enableEstimations=(settings().getBoolean("feature", "analyzeGcode"))
 	)
 
 #~~ Printer state

printer_webui/settings.py

@@ -34,6 +34,9 @@ default_settings = {
 		"uploads": None,
 		"timelapse": None,
 		"timelapse_tmp": None
+	},
+	"feature": {
+		"analyzeGcode": True
 	}
 }
 
@@ -87,16 +90,13 @@ class Settings(object):
 		if section not in default_settings.keys():
 			return None
 
-		value = None
 		if self._config.has_option(section, key):
-			value = self._config.get(section, key)
-		if value is None:
-			if default_settings.has_key(section) and default_settings[section].has_key(key):
-				return default_settings[section][key]
-			else:
-				return None
-		else:
-			return value
+			return self._config.get(section, key)
+
+		if default_settings.has_key(section) and default_settings[section].has_key(key):
+			return default_settings[section][key]
+
+		return None
 
 	def getInt(self, section, key):
 		value = self.get(section, key)
@@ -108,6 +108,14 @@ class Settings(object):
 		except ValueError:
 			return None
 
+	def getBoolean(self, section, key):
+		value = self.get(section, key)
+		if value is None:
+			return None
+		if isinstance(value, bool):
+			return value
+		return value.lower() in ["true", "yes", "y", "1"]
+
 	def getBaseFolder(self, type):
 		if type not in default_settings["folder"].keys():
 			return None

printer_webui/static/js/ui.js

@@ -182,7 +182,12 @@ function PrinterStateViewModel() {
 
     self._processGcodeData = function(data) {
         if (self.isLoading()) {
-            self.filename("Loading... (" + Math.round(data.progress * 100) + "%)");
+            var progress = Math.round(data.progress * 100);
+            if (data.mode == "loading") {
+                self.filename("Loading... (" + progress + "%)");
+            } else if (data.mode == "parsing") {
+                self.filename("Parsing... (" + progress + "%)");
+            }
         }
     }
 

printer_webui/templates/index.html

@@ -52,8 +52,10 @@
                             <div class="accordion-inner">
                                 Machine State: <strong data-bind="text: stateString"></strong><br>
                                 File: <strong data-bind="text: filename"></strong><br>
-                                Filament: <strong data-bind="text: filament"></strong><br>
-                                Estimated Print Time: <strong data-bind="text: estimatedPrintTime"></strong><br>
+                                {% if enableEstimations %}
+                                    Filament: <strong data-bind="text: filament"></strong><br>
+                                    Estimated Print Time: <strong data-bind="text: estimatedPrintTime"></strong><br>
+                                {% endif %}
                                 Line: <strong data-bind="text: lineString"></strong><br>
                                 Height: <strong data-bind="text: currentHeight"></strong><br>
                                 Print Time: <strong data-bind="text: printTime"></strong><br>