public Keyhole(Keys overlayKey)
{
m_overlayKey = overlayKey;
m_Ts = new ThreadStart(DrawLoop);
m_DrawThread = new Thread(m_Ts);
// setup eye tracker
m_EyeTracker = EyeTrackingOperations.FindAllEyeTrackers().FirstOrDefault();
m_EyeTracker.GazeDataReceived += GazeDataReceived;
// init gaze points
ScreenGaze = new ScreenGaze();
GazeTargets = new List <GazeTarget>();
Screen = System.Windows.Forms.Screen.PrimaryScreen.Bounds;
window = new Form1(this);
m_Active = false;
// keyboard / mouse
m_Events = Hook.GlobalEvents();
m_Events.KeyDown += OnKeyDown;
//m_Events.KeyUp += OnKeyUp;
//m_Events.KeyPress += HookManager_KeyPress;
m_Events.MouseMove += OnMouseMove;
m_DrawThread.Start();
}
public ScreenGaze(ScreenGaze other)
{
m_GazeLeft.X = other.m_GazeLeft.X;
m_GazeLeft.Y = other.m_GazeLeft.Y;
m_GazeRight.X = other.m_GazeRight.X;
m_GazeRight.Y = other.m_GazeRight.Y;
m_GazePoint.X = other.m_GazePoint.X;
m_GazePoint.Y = other.m_GazePoint.Y;
m_GazeRect.Location = other.m_GazeRect.Location;
m_GazeRect.Size = other.m_GazeRect.Size;
}
//--------------------------------------------------------------------
// High Level Functions
//--------------------------------------------------------------------
private void GazeSnapshot()
{
//
// make a copy of the current gaze data
//
lock (ScreenGaze)
ScreenGazeSnapshot = new ScreenGaze(ScreenGaze);
//
// take a screenshot of the desktop and crop it to the user gaze
//
var screenshot = this.TakeScreenshot();
var crop = new Bitmap(ScreenGazeSnapshot.m_GazeRect.Width, ScreenGazeSnapshot.m_GazeRect.Height);
Graphics g = Graphics.FromImage(crop);
g.DrawImage(screenshot, -ScreenGazeSnapshot.m_GazeRect.X, -ScreenGazeSnapshot.m_GazeRect.Y);
//
// use 'CV' techniques to identify on-screen click targets
//
var rects = do_cv(crop);
//
// convert the on-screen 'rectangles' to higher level 'gaze targets' for rendering
//
// TODO: we should put this in a config somewhere and allow the user to specify it
var allowedLabels = "ABCDEFGHIJKLMNOPQRSTUVWXYZ123456789";
GazeTargets.Clear();
for (int i = 0; i < rects.Count; i++)
{
var r = rects[i];
// TODO: we only assign as many unique labels as we have...
var targetLabel = "";
if (i < allowedLabels.Length)
{
targetLabel = allowedLabels[i].ToString();
}
GazeTargets.Add(new GazeTarget(targetLabel, new Rectangle(r.X, r.Y, r.Width, r.Height)));
}
Console.WriteLine("done");
m_Active = true;
m_Dirty = true;
}