int greenBarSpacing = GREEN_BAR_SPACING[(int)DEFAULT_INTERFACE_SIZE];

        int blueBarSpacing = BLUE_BAR_SPACING[(int)DEFAULT_INTERFACE_SIZE];

        public int SwatchHeight {  get { return swatchHeight; } }

        public int SwatchWidth {  get { return swatchWidth; } }

        public int ColorBarWidth { get { return colorBarWidth;  } }

        public int RedBarSpacing {  get { return redBarSpacing; } }

        public int GreenBarSpacing { get { return greenBarSpacing; } }

        public int BlueBarSpacing {  get { return blueBarSpacing; } }

        // Current Status

        public bool IsCaptured { get; private set; }

        public int X { get; private set; }

        public int Y { get; private set; }

        public int ScreenWidth { get; private set; }

        public int ScreenHeight { get; private set; }

        public int RedBarX { get; private set; }

        public int RedBarY { get; private set; }

        int pixelMultiplier = 1;

        InterfaceSize interfaceSize;

        bool firstRun = true;

        int lastSwatchX = -1;

        int lastSwatchY = -1;

        public int SwatchX { get { return lastSwatchX; } }

        public int SwatchY { get { return lastSwatchY; } }

        private static ReactionRecorder _instance;

        public static ReactionRecorder Instance

        {

            get {

                    WriteLog("Color {0}, {1}, {2} is no longer blue at pixel offset {3},{4}", pixBytes[bluePixelStart], pixBytes[bluePixelStart + 1], pixBytes[bluePixelStart + 2], (bluePixelStart % stride)/3, bluePixelStart / stride);

                    reactedColor.Blue = (byte)Math.Round((float)bluePixelCount * 255f / (float)colorBarWidth);

                    WriteLog("Found the color swatch at {0}, {1}. Color={2} Red={3}px Green={4}px Blue={5}px", x, y, reactedColor, redPixelCount, greenPixelCount, bluePixelCount);

                    return true;

                }

            }

            return false;

        }

        unsafe public bool CaptureReaction(byte* pixBytes, int screenshotWidth, int screenshotHeight, int stride)

        {

            PaintColor reactedColor = new PaintColor();

            int redPixelStart = 0;

            ScreenWidth = screenshotWidth;

            ScreenHeight = screenshotHeight;

            IsCaptured = false;

            if (!firstRun)

            {

                // If this is not the first run, let's check the last location, to see if the UI is still there.

                if (TestPosition(lastSwatchX, lastSwatchY, pixBytes, screenshotWidth, screenshotHeight, stride, ref reactedColor, ref redPixelStart))

                {

                    IsCaptured = true;

                    RedBarX = (redPixelStart % stride) / 3;

                    RedBarY = redPixelStart / stride;

                    RecordedColor = reactedColor;

                    return true;

                }

                else

                {

                    firstRun = true;

            DesertPaintLab.AppSettings.Get("EnableDebugMenu", out enableDebugMenu);

            StreamWriter log = null;

            if (enableDebugMenu)

            {

                string logfile = FileUtils.FindNumberedFile("DesertPaintLab_Capture", "log", Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments));

                log = new StreamWriter(logfile);

                ReactionRecorder.Instance.Log = log;

            }

            if (notifyCaptureProgress == null)

            {

                notifyCaptureProgress = new Gtk.ThreadNotify(new Gtk.ReadyEvent(NotifyCaptureProgress));

                notifyCaptureComplete = new Gtk.ThreadNotify(new Gtk.ReadyEvent(NotifyCaptureComplete));

            }

            Thread thr = new Thread(new ThreadStart(this.CaptureReactionThread));

            thr.Priority = ThreadPriority.AboveNormal;

            thr.Start();

            //OnCaptureComplete(isCaptured, reactedColor, screenWidth, screenHeight, stride, redPixelStart);

        }

        unsafe private void CaptureReactionThread()

        {

            byte* pixBytes = (byte*)screenBuffer.Pixels;

            ReactionRecorder.Instance.OnCaptureProgress += OnCaptureProgress;

            ReactionRecorder.Instance.CaptureReaction(pixBytes, screenBuffer.Width, screenBuffer.Height, screenBuffer.Rowstride);

            ReactionRecorder.Instance.OnCaptureProgress -= OnCaptureProgress;

            notifyCaptureComplete.WakeupMain();

                    Gtk.MessageDialog md = new Gtk.MessageDialog((Gtk.Window)Toplevel,

                    Gtk.DialogFlags.DestroyWithParent,

                    Gtk.MessageType.Error, Gtk.ButtonsType.Ok,

                    "Reaction clipped.  You will need to do a " +

                    "3-way reaction to test this pair.  Details: " +

                    warning);

                    md.Run();

                    md.Destroy();

                    // reaction clipped - don't let them record

                    recordButton.Sensitive = false;

                }

                else

                {

                    recordButton.Sensitive = recordEnabled;

                }

            }

            else

            {

                Gtk.MessageDialog md = new Gtk.MessageDialog((Gtk.Window)Toplevel,

                    Gtk.DialogFlags.DestroyWithParent,

                    Gtk.MessageType.Error, Gtk.ButtonsType.Ok,

                    "Pigment Lab dialog box NOT FOUND.  Please ensure " +

                    "that there is an unobstructed view of the dialog " +

                    "and that your interface size is set to 'small' " +

                    "when you press the Capture button.");

                md.Run();

                md.Destroy();

            }

            progressBar.Hide();

            recordButton.Show();

            ingredient1ComboBox.Sensitive = true;

            ingredient2ComboBox.Sensitive = true;

        }

        private void NotifyCaptureComplete()

        {

            OnCaptureComplete(

                ReactionRecorder.Instance.IsCaptured,

                ReactionRecorder.Instance.RecordedColor,

                ReactionRecorder.Instance.SwatchX,

                ReactionRecorder.Instance.SwatchY);

        }

        unsafe void CaptureReactionColor()

        {

            // Take a screenshot.

            int screenWidth, screenHeight;

            Gdk.Window rootWindow = Gdk.Global.DefaultRootWindow;