wmctrl-pad/lib/getWindowDisplay.js

WindowPad functionality for Linux

// Helper function to get window's display
// ANTI-PATTERN: No room for expansion with parameters and requires memorization of ordering
function getWindowDisplay(win, displays) {
  // Determine where the center of the window is
  var currentDisplay = displays[0],
      i = 0,
      len = displays.length;
  for (; i < len; i++) {
    var display = displays[i],
        isWithinLeftBoundary = win.left + (win.width / 2) >= display.left,
        isWithinRightBoundary = win.left + (win.width / 2) < (display.left + display.width),
        isWithinTopBoundary = win.top + (win.height / 2) >= display.top,
        isWithinBottomBoundary = win.top + (win.height / 2) < (display.top + display.height);
    // If the window is within the display horiz and vert, save it and stop searching
    if (isWithinLeftBoundary && isWithinRightBoundary && isWithinTopBoundary && isWithinBottomBoundary) {
      currentDisplay = display;
      break;
    }
  }

  // Return the display
  return currentDisplay;
}

// Export getWindowDisplay
module.exports = getWindowDisplay;