Quite a few things working. The window focus is still a bit weird.

ControlFrame.pde

@@ -5,12 +5,12 @@ public class ControlFrame extends PApplet {
   public int w, h;
   int abc = 100;
   public ControlP5 cp5;
-  protected Object parent;
+  protected PApplet parent;
 
   private ControlFrame() {
   }
 
-  public ControlFrame(Object theParent, int theWidth, int theHeight) {
+  public ControlFrame(PApplet theParent, int theWidth, int theHeight) {
     this.parent = theParent;
     this.w = theWidth;
     this.h = theHeight;
@@ -23,6 +23,10 @@ public class ControlFrame extends PApplet {
 	return this.cp5;
   }
   
+	public PApplet getParent() {
+		return this.parent;
+	}
+  
   public void setup() {
     size(w, h);
     frameRate(5);

DisplayMachine.pde

@@ -767,8 +767,6 @@ class DisplayMachine extends Machine
   void previewNativePixel(PVector pos, float size, float brightness)
   {
     float half = size / 2.0;
-    fill(0,0,0, 255-brightness);
-    beginShape();
     
     // arcs from the left-hand corner
     float distFromPointA = getOutline().getTopLeft().dist(pos);
@@ -777,6 +775,10 @@ class DisplayMachine extends Machine
     List<PVector> int1 = findIntersections(getOutline().getLeft(), distFromPointA-half, getOutline().getRight(), distFromPointB-half, size);
     List<PVector> int2 = findIntersections(getOutline().getLeft(), distFromPointA+half, getOutline().getRight(), distFromPointB-half, size);
     
+    if (!int1.isEmpty() && !int2.isEmpty()) {
+      fill(0,0,0, 255-brightness);
+      beginShape();
+  
       // plot out the vertexes    
       vertex(int1.get(0).x, int1.get(0).y);
       vertex(int2.get(0).x, int2.get(0).y);
@@ -785,6 +787,7 @@ class DisplayMachine extends Machine
       vertex(int1.get(0).x, int1.get(0).y);
       endShape();
     }
+  }
 
   void previewNativeArcPixel(PVector pos, float size, float brightness)
   {

SerialPortWindow.pde

@@ -15,7 +15,7 @@ class SerialPortWindow extends ControlFrame {
 		f.setTitle(CHANGE_SERIAL_PORT_WINDOW_NAME);
 		f.setSize(super.w, super.h);
 		f.setLocation(xPos, yPos);
-		f.setResizable(false);
+		f.setResizable(true);
 		f.setVisible(true);
 
 		f.addWindowListener( new WindowAdapter() {
@@ -31,6 +31,8 @@ class SerialPortWindow extends ControlFrame {
 			.setSpacingRow(5)
 			.plugTo(parentPapplet, "radio_serialPort");
   
+                r.addItem("No serial connection", -1);
+  
 		String[] ports = Serial.list();
 		
 		for (int i = 0; i < ports.length; i++) {

controlsActionsWindows.pde

@@ -63,7 +63,7 @@ void button_mode_drawWritingDialog() {
 String textToWrite = "";
 String spriteFilePrefix = "sprite/let";
 String spriteFileSuffix = ".txt";
-class DrawWritingWindow extends ControlFrame {
+public class DrawWritingWindow extends ControlFrame {
 	public DrawWritingWindow() {
 		super(parentPapplet, 450, 250);
 		int xPos = 100;
@@ -111,39 +111,47 @@ class DrawWritingWindow extends ControlFrame {
 			.plugTo("submitWritingWindow");
 	}
 
-
-	void spriteFilePrefixField(String value)
-	{
+	void spriteFilePrefixField(String value) {
 		spriteFilePrefix = value;
 	}
-	void textToWriteField(String value)
-	{
+	void textToWriteField(String value) {
 		textToWrite = value;
 	}
 
-	String getTextToWrite()
-	{
+	String getTextToWrite() {
 		return textToWrite;
 	}
-	String getSpriteFilePrefix()
-	{
+	String getSpriteFilePrefix() {
 		return spriteFilePrefix;
 	}
-	String getSpriteFileSuffix()
-	{
+	String getSpriteFileSuffix() {
 		return spriteFileSuffix;
 	}
 
-	void importTextButton()
-	{
+	void importTextButton() {
 		println("Text!");
-		textToWrite = importTextToWriteFromFile();
-		println(textToWrite);
+		selectInput("Select the text file to load the text from:", "importTextToWriteFromFile", null, this);
+	}
+	
+	public void importTextToWriteFromFile(File selection) {
+		if (selection != null) {
+			String fp = selection.getAbsolutePath();
+			println("Input file: " + fp);
+			List<String> rows = java.util.Arrays.asList(loadStrings(fp));
+			StringBuilder sb = new StringBuilder(200);
+			for (String row : rows) {
+				sb.append(row);
+			}
+			textToWriteField(sb.toString());
+			println("Completed text import, " + getTextToWrite().length() + " characters found.");
+			
+			println("Text: " + getTextToWrite());
+			
 			Textfield tf = cp5().get(Textfield.class, "textToWriteField");
 			tf.setText(getTextToWrite());
 			tf.submit();
 		}
-
+	}
 
 	void submitWritingWindow(int theValue) 
 	{
@@ -161,15 +169,12 @@ class DrawWritingWindow extends ControlFrame {
 		println("Sprite file prefix: " + spriteFilePrefix);
 		println("Text: " + textToWrite);
 
-	 for (int i=0; i<getTextToWrite().length(); i++)
-	 {
+		for (int i=0; i<getTextToWrite().length(); i++) {
 			String filename = getSpriteFilePrefix() + (int) getTextToWrite().charAt(i) + getSpriteFileSuffix();
 			addToCommandQueue(CMD_DRAW_SPRITE + int(gridSize * pixelScalingOverGridSize) + "," + filename+",END");
 			println(filename);
 		}
-	 
 	}
-	
 }
 //
 //void button_mode_drawWritingDialog()

polargraphcontroller.pde

@@ -1816,14 +1816,7 @@ boolean isHiddenPixel(PVector p)
     return false;
 }
 
-
-
-void sizeImageToFitBox()
-{
-//  PVector mmBoxSize = getDisplayMachine().inSteps(getBoxSize());
-//  PVector mmBoxPos = getDisplayMachine().inSteps(getBoxVector1());
-//  println("mm box: " + mmBoxSize);
-  
+void sizeImageToFitBox() {
   PVector boxSize = getDisplayMachine().inSteps(getBoxSize());
   PVector boxPos = getDisplayMachine().inSteps(getBoxVector1());
   println("image: " + boxSize);
@@ -1832,18 +1825,16 @@ void sizeImageToFitBox()
   getDisplayMachine().setImageFrame(r);
 }
 
-void exportQueueToFile()
-{
-  if (!commandQueue.isEmpty() || !realtimeCommandQueue.isEmpty())
-  {
-    selectOutput("Enter a filename to save to:", "fileSelected");  // Opens file chooser
-    if (filePath == null) 
-    {
-      // If a file was not selected
-      println("No output file was selected...");
+void exportQueueToFile() {
+	if (!commandQueue.isEmpty() || !realtimeCommandQueue.isEmpty()) {
+		selectOutput("Enter a filename to save to:", "exportQueueToFile");  // Opens file chooser
 	}
-    else 
-    {
+}
+
+void exportQueueToFile(File selection) {
+	if (selection != null) {
+		filePath = selection.getAbsolutePath();
+		println("User selected " + filePath);
 		// If a file was selected, print path to folder
 		println("Output file: " + filePath);
 		List<String> allCommands = new ArrayList<String>(realtimeCommandQueue);
@@ -1853,7 +1844,6 @@ void exportQueueToFile()
 		saveStrings(filePath, list);
 		println("Completed queue export, " + list.length + " commands exported.");
 	}  
-  }
 }
 
 void fileSelected(File selection) {
@@ -1866,50 +1856,20 @@ void fileSelected(File selection) {
 	}
 }
 
-
-void importQueueFromFile()
-{
+void importQueueFromFile() {
 	commandQueue.clear();
 	selectInput("Select file to import queue from", "fileSelected");
-  if (filePath == null)
-  {
+	if (filePath == null) {
 		// nothing selected
 		println("No input file was selected.");
-  }
-  else
-  {
+	} else {
 		println("Input file: " + filePath);
 		String commands[] = loadStrings(filePath);
-//    List<String> list = Arrays
 		commandQueue.addAll(Arrays.asList(commands));
 		println("Completed queue import, " + commandQueue.size() + " commands found.");
 	}
 }
 
-String importTextToWriteFromFile()
-{
-  selectInput("Select the text file to load the text from:", "fileSelected");
-  String result = "";
-  if (filePath == null)
-  {
-    // nothing selected
-    println("No input file was selected.");
-  }
-  else
-  {
-    println("Input file: " + filePath);
-    List<String> rows = java.util.Arrays.asList(loadStrings(filePath));
-    StringBuilder sb = new StringBuilder(200);
-    for (String row : rows) 
-    {
-      sb.append(row);
-    }
-    result = sb.toString();
-
-    println("Completed text import, " + result.length() + " characters found.");
-  }
-  return result;
-}