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!7

cmodule ProcessCPUTrayIcon > DynBigNumber {
  transient BufferedImage trayImage;
  transient TrayIcon trayIcon; 
  
  switchable S color = "ADFF2F"; // green yellow
  switchable S backgroundColor = "228B22"; // forest green
  switchable int size = goodSystemTrayIconSize().x;
  switchable double interval = 1;
  
  transient double loadRelativeToAllCores, recentLoad;
  transient RollingAverage avg = new(5); // =10 seconds
  
  start {
    setDescription("STEFAN'S OS CPU %");
    setToolTip("Percentage is per core (total: " + numberOfCores()*100 + "%)");
    doEvery(interval, r actualUpdate);
    ownResource(tempTrayIcon(trayIcon = installTrayIcon(
      trayImage = newBufferedImage(size, size, colorFromHex(backgroundColor)), "Stefan's OS CPU", rThread dm_activateOSAndModule)));
  }
  
  void actualUpdate {
    recentLoad = processCPULoad();
    avg.add(recentLoad);
    loadRelativeToAllCores = avg!;
    setValue(toIntPercent_ceil(loadRelativeToAllCores*numberOfCores()) + " %");
    int w = trayImage.getWidth(), h = trayImage.getHeight();
    copyImagePart(trayImage, 1, 0, trayImage, 0, 0, w-1, h);
    int y = iround((h-1)*(1 - loadRelativeToAllCores));
    fillRect(trayImage, w-1, 0, 1, y, colorFromHex(backgroundColor));
    fillRect(trayImage, w-1, y, 1, h-y, colorFromHex(color));
    setTrayIconImage(trayIcon, trayImage);
  }
}