!7

cm RecognizeScreen > DynPrintLogAndEnabled {
  switchable int x1;
  switchable int y1;
  switchable int w = screenWidth();
  switchable int h = screenHeight();
  transient WithTimestamp<OKOrError<BufferedImage>> lastScreen;
  new Average screenShotTime;

  Rect area() { ret rect(x1, y1, w, h); }
  
  start-thread {
    dm_doEvery(60.0, r { if (enabled) printStats(); });
    
    repeat {
      if (!enabled)
        sleepSeconds(1);
      else {
        long time = nanoTime();
        lastScreen = withTimestamp(okOrError(-> screenshot(area())));
        screenShotTime.add(nanosToSeconds(nanoTime()-time));
      }
    }
  }

  void printStats() { print(stats()); }

  S stats() {
    ret formatColonProperties(
      "Last screenshot taken", lastScreen,
      "Average time to take a screenshot", screenShotTime);
  }
}