Hammerspoon config

init.lua

-----------------------------------------------
-- Set up
-----------------------------------------------

local hyper = {"cmd", "alt", "ctrl"}

hs.window.animationDuration = 0.05

-----------------------------------------------
-- hyper left for left one half window
-----------------------------------------------

hs.hotkey.bind(hyper, 'left', function()
    if hs.window.focusedWindow() then
        local win = hs.window.focusedWindow()
        local f = win:frame()
        local screen = win:screen()
        local max = screen:frame()

        f.x = max.x - 4
        f.y = max.y
        f.w = max.w / 2
        f.h = max.h
        win:setFrame(f)
    else
        hs.alert.show("No active window")
    end
end)

-----------------------------------------------
-- hyper right for right one half window
-----------------------------------------------

hs.hotkey.bind(hyper, 'right', function()
    if hs.window.focusedWindow() then
        local win = hs.window.focusedWindow()
        local f = win:frame()
        local screen = win:screen()
        local max = screen:frame()

        f.x = max.x + (max.w / 2) - 4
        f.y = max.y
        f.w = max.w / 2 + 4
        f.h = max.h
        win:setFrame(f)
    else
        hs.alert.show("No active window")
    end
end)

-----------------------------------------------
-- hyper return for fullscreen
-----------------------------------------------

hs.hotkey.bind(hyper, 'return', function()
    if hs.window.focusedWindow() then
        local win = hs.window.focusedWindow()
        local f = win:frame()
        local screen = win:screen()
        local max = screen:frame()

        f.x = max.x - 4
        f.y = max.y
        f.w = max.w + 4
        f.h = max.h
        win:setFrame(f)
    else
        hs.alert.show("No active window")
    end
end)

-----------------------------------------------
-- hyper up for top half window
-----------------------------------------------

hs.hotkey.bind(hyper, 'up', function()
    if hs.window.focusedWindow() then
        local win = hs.window.focusedWindow()
        local f = win:frame()
        local screen = win:screen()
        local max = screen:frame()

        f.x = max.x - 4
        f.y = max.y
        f.w = max.w + 4
        f.h = max.h / 2
        win:setFrame(f)
    else
        hs.alert.show("No active window")
    end
end)

-----------------------------------------------
-- hyper down for bottom half window
-----------------------------------------------

hs.hotkey.bind(hyper, 'down', function()
    if hs.window.focusedWindow() then
        local win = hs.window.focusedWindow()
        local f = win:frame()
        local screen = win:screen()
        local max = screen:frame()

        f.x = max.x - 4 
        f.y = max.h / 2
        f.w = max.w + 4
        f.h = max.h / 2
        win:setFrame(f)
    else
        hs.alert.show("No active window")
    end
end)


-----------------------------------------------
-- hyper c for center two-thirds window
-----------------------------------------------

hs.hotkey.bind(hyper, 'c', function()
    if hs.window.focusedWindow() then
        local win = hs.window.focusedWindow()
        local f = win:frame()
        local screen = win:screen()
        local max = screen:frame()

        f.x = max.x + (max.w / 6) - 4
        f.y = max.y
        f.w = max.w * (2 / 3) + 4
        f.h = max.h
        win:setFrame(f)
    else
        hs.alert.show("No active window")
    end
end)

-----------------------------------------------
-- Reload config on write
-----------------------------------------------

function reload_config(files)
    hs.reload()
end
hs.pathwatcher.new(os.getenv("HOME") .. "/.hammerspoon/", reload_config):start()
hs.alert.show("Config loaded")

-----------------------------------------------
-- Hyper i to show window hints
-----------------------------------------------

hs.hotkey.bind(hyper, 'i', function()
    hs.hints.windowHints()
end)

-----------------------------------------------
-- Hyper hjkl to switch window focus
-----------------------------------------------

hs.hotkey.bind(hyper, 'k', function()
    if hs.window.focusedWindow() then
        hs.window.focusedWindow():focusWindowNorth()
    else
        hs.alert.show("No active window")
    end
end)

hs.hotkey.bind(hyper, 'j', function()
    if hs.window.focusedWindow() then
        hs.window.focusedWindow():focusWindowSouth()
    else
        hs.alert.show("No active window")
    end
end)

hs.hotkey.bind(hyper, 'l', function()
    if hs.window.focusedWindow() then
    hs.window.focusedWindow():focusWindowEast()
    else
        hs.alert.show("No active window")
    end
end)

hs.hotkey.bind(hyper, 'h', function()
    if hs.window.focusedWindow() then
        hs.window.focusedWindow():focusWindowWest()
    else
        hs.alert.show("No active window")
    end
end)