Create DisplayFilenameAndLayerOnLCD

This plugin inserts M117 into the g-code so that the filename is displayed on the LCD and updates at each layer to display the current layer

plugins/PostProcessingPlugin/scripts/DisplayFilenameAndLayerOnLCD

@@ -0,0 +1,50 @@
+# Cura PostProcessingPlugin
+# Author:   Amanda de Castilho
+# Date:     August 28, 2018
+
+# Description:  This plugin inserts a line at the start of each layer,
+#               M117 displays the filename and layer height to the LCD
+#               ** user must enter 'filename'
+#               ** future update: include actual filename
+
+from ..Script import Script
+
+class DisplayFilenameAndLayerOnLCD(Script):
+    def __init__(self):
+        super().__init__()
+
+    def getSettingDataString(self):
+        return """{
+            "name": "Display filename and layer on LCD",
+            "key": "DisplayFilenameAndLayerOnLCD",
+            "metadata": {},
+            "version": 2,
+            "settings":
+            {
+                "name":
+                {
+                    "label": "filename",
+                    "description": "Enter filename",
+                    "type": "str",
+                    "default_value": "default"
+                }
+            }
+        }"""
+    
+    def execute(self, data):
+        name = self.getSettingValueByKey("name")
+        lcd_text = "M117 " + name + " layer: "
+        i = 0
+        for layer in data:
+            display_text = lcd_text + str(i)
+            layer_index = data.index(layer)
+            lines = layer.split("\n")
+            for line in lines:
+                if line.startswith(";LAYER:"):
+                    line_index = lines.index(line)
+                    lines.insert(line_index + 1, display_text)
+                    i += 1
+            final_lines = "\n".join(lines)
+            data[layer_index] = final_lines
+            
+        return data