.slate.js

// Need to dock compensation because the width is not accurate
// when dock is hidden
var HIDDEN_DOCK_COMPENSATION = 4

var halfRight = slate.operation('push', {
  direction: 'right',
  style: 'bar-resize:screenSizeX / 2'
})

var halfLeft = slate.operation('move', {
  x : 'screenOriginX - ' + HIDDEN_DOCK_COMPENSATION,
  y : 'screenOriginY',
  width : '(screenSizeX / 2) + ' + HIDDEN_DOCK_COMPENSATION,
  height : 'screenSizeY'
})

var maximize = slate.operation('move', {
  x : 'screenOriginX - ' + HIDDEN_DOCK_COMPENSATION,
  y : 'screenOriginY',
  width : 'screenSizeX + ' + HIDDEN_DOCK_COMPENSATION,
  height : 'screenSizeY'
})

var center = slate.operation('move', {
  x : 'screenSizeX/10',
  y : 'screenSizeY/10',
  width : 'screenSizeX - (screenSizeX/10) * 2',
  height : 'screenSizeY - (screenSizeY/10) * 2'
})

slate.bind('right:ctrl,alt,cmd', function (win) {
  win.doOperation(halfRight)
})

slate.bind('left:ctrl,alt,cmd', function (win) {
  win.doOperation(halfLeft)
})

slate.bind('f:cmd,alt', function (win) {
  win.doOperation(maximize)
})

slate.bind('c:cmd,alt,ctrl', function (win) {
  win.doOperation(center)
})