Method getLocation

ij/src/main/java/ij/Prefs.java:698–722

Uses the keyword key to retrieve a location from the preferences file. Returns null if the key is not found or the location is not valid (e.g., offscreen).

(String key)

		from the preferences file. Returns null if the
		key is not found or the location is not valid (e.g., offscreen). */
	public static Point getLocation(String key) {
		String value = ijPrefs.getProperty(KEY_PREFIX+key);
		if (value==null) return null;
		int index = value.indexOf(",");
		if (index==-1) return null;
		double xloc = Tools.parseDouble(value.substring(0, index));
		if (Double.isNaN(xloc) || index==value.length()-1) return null;
		double yloc = Tools.parseDouble(value.substring(index+1));
		if (Double.isNaN(yloc)) return null;
		Point p = new Point((int)xloc, (int)yloc);
		Rectangle bounds = GUI.getScreenBounds(p); // get bounds of screen that contains p
		if (bounds!=null && p.x+100<=bounds.x+bounds.width && p.y+ 40<=bounds.y+bounds.height) {
			if (locKeys.get(key)==null) { // first time for this key? 
				locKeys.setProperty(key, "");
				Rectangle primaryScreen = GUI.getMaxWindowBounds();
				ImageJ ij = IJ.getInstance();
				Point ijLoc = ij!=null?ij.getLocation():null;
				//System.out.println("getLoc: "+key+" "+(ijLoc!=null&&primaryScreen.contains(ijLoc)) + "  "+!primaryScreen.contains(p));
				if ((ijLoc!=null&&primaryScreen.contains(ijLoc)) && !primaryScreen.contains(p))
					return null; // return null if "ImageJ" window on primary screen and this location is not
			}
			return p;
		} else
			return null;
    }

	@AstroImageJ(reason = "Check if location is on the screen")
     public static boolean isLocationOnScreen(Point loc) {