public bool OnKeyPressed(
Key key,
KeyState key_state,
float speed_up,
bool is_repetition,
bool is_modifier,
InputProvider input_provider)
{
// Cntrl+click, alt+click should work.
if (key == Key.Unbound && is_modifier)
{
return(false);
}
if (key == Key.Modifier)
{
if (key_state == KeyState.Down)
{
helper_window.Hide();
eye_tracking_mouse.StartControlling();
return(true);
}
if (key_state == KeyState.Up)
{
if (eye_tracking_mouse.mouse_state == EyeTrackingMouse.MouseState.Controlling)
{
starting_cursor_position = System.Windows.Forms.Cursor.Position;
eye_tracking_mouse.StartCalibration(false);
helper_window.Show();
return(true);
}
return(false);
}
}
if (eye_tracking_mouse.mouse_state != EyeTrackingMouse.MouseState.Calibrating)
{
if (eye_tracking_mouse.mouse_state == EyeTrackingMouse.MouseState.Controlling)
{
helper_window.Hide();
eye_tracking_mouse.StopControlling();
input_provider.SendModifierDown();
}
return(false);
}
if (key == Key.StopCalibration)
{
if (key_state == KeyState.Up)
{
helper_window.Hide();
eye_tracking_mouse.StopControlling();
}
return(true);
}
if (key == Key.Unbound)
{
// Unbound key in Accessibility mode might mean that User has problems with pressing the intended buttons.
return(true);
}
var repetition_white_list = new SortedSet <Key> {
Key.ScrollDown,
Key.ScrollUp,
Key.ScrollLeft,
Key.ScrollRight,
Key.CalibrateLeft,
Key.CalibrateRight,
Key.CalibrateUp,
Key.CalibrateDown,
};
if (is_repetition && !repetition_white_list.Contains(key))
{
return(true);
}
if (key_state == KeyState.Down)
{
// Calibration
int calibration_step = (int)(Options.Instance.calibration_step * speed_up);
if (key == Key.CalibrateLeft)
{
eye_tracking_mouse.AdjustCursorPosition(-calibration_step, 0);
}
if (key == Key.CalibrateRight)
{
eye_tracking_mouse.AdjustCursorPosition(calibration_step, 0);
}
if (key == Key.CalibrateUp)
{
eye_tracking_mouse.AdjustCursorPosition(0, -calibration_step);
}
if (key == Key.CalibrateDown)
{
eye_tracking_mouse.AdjustCursorPosition(0, +calibration_step);
}
// Scroll
if (key == Key.ScrollDown)
{
MouseButtons.WheelDown((int)(Options.Instance.vertical_scroll_step * speed_up));
}
if (key == Key.ScrollUp)
{
MouseButtons.WheelUp((int)(Options.Instance.vertical_scroll_step * speed_up));
}
if (key == Key.ScrollLeft)
{
MouseButtons.WheelLeft((int)(Options.Instance.horizontal_scroll_step * speed_up));
}
if (key == Key.ScrollRight)
{
MouseButtons.WheelRight((int)(Options.Instance.horizontal_scroll_step * speed_up));
}
}
// Mouse buttons
if (eye_tracking_mouse.mouse_state == EyeTrackingMouse.MouseState.Calibrating &&
(key == Key.Accessibility_SaveCalibration))
{
if (key_state == KeyState.Up)
{
helper_window.HideCalibration();
eye_tracking_mouse.SaveCalibration();
}
else
{
helper_window.ShowCalibration(starting_cursor_position);
}
}
if (key == Key.LeftMouseButton)
{
if (key_state == KeyState.Down)
{
eye_tracking_mouse.LeftDown();
}
else if (key_state == KeyState.Up)
{
eye_tracking_mouse.LeftUp();
}
}
if (key == Key.RightMouseButton)
{
if (key_state == KeyState.Down)
{
eye_tracking_mouse.RightDown();
}
else if (key_state == KeyState.Up)
{
eye_tracking_mouse.RightUp();
}
}
if (key == Key.ShowCalibrationView && key_state == KeyState.Down)
{
CalibrationManager.Instance.IsDebugWindowEnabled = !CalibrationManager.Instance.IsDebugWindowEnabled;
}
return(true);
}
public bool OnKeyPressed(
Key key,
KeyState key_state,
float speed_up,
bool is_repetition,
bool is_modifier,
InputProvider input_provider)
{
// The application grabs control over cursor when modifier is pressed.
if (key == Key.Modifier)
{
if (key_state == KeyState.Down)
{
eye_tracking_mouse.StartControlling();
return(true);
}
if (key_state == KeyState.Up)
{
if (eye_tracking_mouse.mouse_state == EyeTrackingMouse.MouseState.Idle)
{
return(false);
}
eye_tracking_mouse.StopControlling();
return(true);
}
}
if (eye_tracking_mouse.mouse_state == EyeTrackingMouse.MouseState.Idle)
{
return(false);
}
if (key == Key.StopCalibration && always_on)
{
if (key_state == KeyState.Up)
{
eye_tracking_mouse.StopControlling();
}
return(true);
}
if (key == Key.Unbound || key == Key.StopCalibration || key == Key.Accessibility_SaveCalibration)
{
// The application intercepts modifier key presses. We do not want to lose modifier when handling unbound keys.
// We stop controlling cursor when facing the first unbound key and send modifier keystroke to OS before handling pressed key.
// This way key combinations like 'Win+E' remain available.
if (!is_modifier)
{
if (!always_on)
{
input_provider.SendModifierDown();
}
eye_tracking_mouse.StopControlling();
}
return(false);
}
var repetition_white_list = new SortedSet <Key> {
Key.ScrollDown,
Key.ScrollUp,
Key.ScrollLeft,
Key.ScrollRight,
Key.CalibrateLeft,
Key.CalibrateRight,
Key.CalibrateUp,
Key.CalibrateDown,
};
if (is_repetition && !repetition_white_list.Contains(key))
{
return(true);
}
if (key_state == KeyState.Down)
{
// Calibration
int calibration_step = (int)(Options.Instance.calibration_step * speed_up);
if (key == Key.CalibrateLeft)
{
eye_tracking_mouse.StartCalibration(true);
eye_tracking_mouse.AdjustCursorPosition(-calibration_step, 0);
}
if (key == Key.CalibrateRight)
{
eye_tracking_mouse.StartCalibration(true);
eye_tracking_mouse.AdjustCursorPosition(calibration_step, 0);
}
if (key == Key.CalibrateUp)
{
eye_tracking_mouse.StartCalibration(true);
eye_tracking_mouse.AdjustCursorPosition(0, -calibration_step);
}
if (key == Key.CalibrateDown)
{
eye_tracking_mouse.StartCalibration(true);
eye_tracking_mouse.AdjustCursorPosition(0, +calibration_step);
}
// Scroll
if (key == Key.ScrollDown)
{
MouseButtons.WheelDown((int)(Options.Instance.vertical_scroll_step * speed_up));
}
if (key == Key.ScrollUp)
{
MouseButtons.WheelUp((int)(Options.Instance.vertical_scroll_step * speed_up));
}
if (key == Key.ScrollLeft)
{
MouseButtons.WheelLeft((int)(Options.Instance.horizontal_scroll_step * speed_up));
}
if (key == Key.ScrollRight)
{
MouseButtons.WheelRight((int)(Options.Instance.horizontal_scroll_step * speed_up));
}
}
// Mouse buttons
if (eye_tracking_mouse.mouse_state == EyeTrackingMouse.MouseState.Calibrating &&
(key == Key.LeftMouseButton || key == Key.RightMouseButton))
{
eye_tracking_mouse.SaveCalibration();
eye_tracking_mouse.StartControlling();
}
if (key == Key.LeftMouseButton)
{
if (key_state == KeyState.Down)
{
eye_tracking_mouse.LeftDown();
}
else if (key_state == KeyState.Up)
{
eye_tracking_mouse.LeftUp();
}
}
if (key == Key.RightMouseButton)
{
if (key_state == KeyState.Down)
{
eye_tracking_mouse.RightDown();
}
else if (key_state == KeyState.Up)
{
eye_tracking_mouse.RightUp();
}
}
if (key == Key.ShowCalibrationView && key_state == KeyState.Down)
{
CalibrationManager.Instance.IsDebugWindowEnabled = !CalibrationManager.Instance.IsDebugWindowEnabled;
}
return(true);
}