init.lua

-- A global variable for the sub-key Hyper Mode
k = hs.hotkey.modal.new({}, 'F18')

-- Hyper+key for all the below are setup somewhere
-- The handler already exists, usually in Keyboard Maestro
-- we just have to get the right keystroke sent
hyperBindings = {'c', 'space'}

for i,key in ipairs(hyperBindings) do
  k:bind({}, key, nil, function() hs.eventtap.keyStroke({'cmd','alt','shift','ctrl'}, key)
    k.triggered = true
  end)
end

-- Enter Hyper Mode when F19 (left control) is pressed
pressedF19 = function()
  k.triggered = false
  k:enter()
end

-- Leave Hyper Mode when F19 (left control) is pressed,
--   send ESCAPE if no other keys are pressed.
releasedF19 = function()
  k:exit()
  if not k.triggered then
    hs.eventtap.keyStroke({}, 'ESCAPE')
  end
end

-- Bind the Hyper key
f19 = hs.hotkey.bind({}, 'F19', pressedF19, releasedF19)

launch = function(appname)
  hs.application.launchOrFocus(appname)
  k.triggered = true
end

-- Single keybinding for app launch
singleapps = {
  {'j', 'iTerm'},
  {'k', 'Google Chrome'},
  {'h', 'Dash'},
  {'i', 'Slack'},
  {'e', 'Airmail 2'},
  {'m', 'Fantastical 2'},
  {'n', 'Hipchat'},
  {'f', 'Finder'}
}

for i, app in ipairs(singleapps) do
  k:bind({}, app[1], function() launch(app[2]); k:exit(); end)
end

-- Window shortcuts from @tmiller
local screenMode = hs.hotkey.modal.new('cmd', 'm')

function screenMode:entered()
  alertUuids = hs.fnutils.imap(hs.screen.allScreens(), function(screen)
    return hs.alert.show('Move Window', hs.alert.defaultStyle, screen, true)
  end)
end

function screenMode:exited()
  hs.fnutils.ieach(alertUuids, function(uuid)
    hs.alert.closeSpecific(uuid)
  end)
end

grid = {
  { key='j', unit=hs.geometry.rect(0, 0.5, 1, 0.5) },
  { key='k', unit=hs.geometry.rect(0, 0, 1, 0.5) },
  { key='h', unit=hs.layout.left50 },
  { key='l', unit=hs.layout.right50 },

  { key='y', unit=hs.geometry.rect(0, 0, 0.5, 0.5) },
  { key='u', unit=hs.geometry.rect(0.5, 0, 0.5, 0.5) },
  { key='b', unit=hs.geometry.rect(0, 0.5, 0.5, 0.5) },
  { key='n', unit=hs.geometry.rect(0.5, 0.5, 0.5, 0.5) },

  { key='space', unit=hs.layout.maximized },
}

hs.fnutils.each(grid, function(entry)
  screenMode:bind('', entry.key, function()
    hs.window.focusedWindow():moveToUnit(entry.unit)
    screenMode:exit()
  end)
end)

screenMode:bind('ctrl', '[', function() screenMode:exit() end)
screenMode:bind('', 'escape', function() screenMode:exit() end)

screenMode:bind('cmd', 'h', function()
  hs.window.focusedWindow():moveOneScreenWest()
  screenMode:exit()
end)

screenMode:bind('cmd', 'l', function()
  hs.window.focusedWindow():moveOneScreenEast()
  screenMode:exit()
end)

screenMode:bind('cmd', 'm', function() end)

-- Shortcut to reload config

ofun = function()
  hs.reload(j)
  hs.alert.show("Config loaded")
  k.triggered = true
end
k:bind({}, 'r', nil, ofun)