public static WindowRectangle CheckWindow(int height, int width)
{
// Have to declare a delegate so that a thunk is created, so that win32 may call us back.
EnumWindowsCallback callBackFn = new EnumWindowsCallback(ReportWindow);
heightWindow = height;
widthWindow = width;
EnumWindows(callBackFn, 0);
WindowRectangle w = new WindowRectangle();
w.Left = rectangleOfWindow.Left;
w.Right = rectangleOfWindow.Right;
w.Top = rectangleOfWindow.Top;
w.Bottom = rectangleOfWindow.Bottom;
return(w);
}
public void timer_Tick(object sender, EventArgs e)
{
//get coordinates of textview
if (wr.Equals(null) || wr.Left == 0)
{
wr = WindowEnumerator.CheckWindow((int)textView.ViewportHeight, (int)textView.ViewportWidth);
return;
}
if (eyePoint.X < wr.Left || eyePoint.Y < wr.Top || eyePoint.Y > wr.Bottom || eyePoint.X > wr.Right)
{
//outside of textview, so return, no update.
return;
}
else
{
int startPosition = textView.TextSnapshot.GetLineNumberFromPosition(textView.TextViewLines.FirstVisibleLine.Start);
int endPosition = textView.TextSnapshot.GetLineNumberFromPosition(textView.TextViewLines.LastVisibleLine.Start);
int noOfLines = endPosition - startPosition;
double noOfPixels = noOfLines * textView.LineHeight;
double lineNumberRelativeToView = (eyePoint.Y - wr.Top) / (textView.LineHeight * (textView.ZoomLevel / 100));
double lineNumberAbsoluteToView = lineNumberRelativeToView + (startPosition);
lineNumber = Math.Ceiling(lineNumberAbsoluteToView);
try
{
currentLineCounter[(int)lineNumber - 1]++;
}
catch (IndexOutOfRangeException)
{
currentLineCounter[currentLineCounter.Length - 1]++;
}
Debug.WriteLine("Gazing at line: " + lineNumber);
}
}