Smart Hot Corners (Global Back / Alt-Tab Teleport)

rc.lua

-- ===================================================================
-- LEFT HOT CORNER (Smart Client Menu)
-- ===================================================================

-- 1. Variable to track the menu instance (to check visibility later)
local client_menu_instance = nil

-- 2. Timer to prevent "debouncing" (accidental multiple triggers)
local hot_corner_timer = gears.timer {
    timeout = 0.5,
    autostart = false,
    single_shot = true
}

-- 3. Function to show the sorted menu
local function show_sorted_client_menu()
    -- If menu exists and is visible, do nothing
    if client_menu_instance and client_menu_instance.wibox.visible then
        return
    end

    local clients = client.get()

    -- Sorting Priority: Lower number = Higher in the list
    local priority = {
        ["google-chrome"] = 1,
        ["org.mozilla.firefox"] = 2,
        ["jetbrains-pycharm-ce"] = 3,
        ["sublime_text"] = 4,
        ["kitty"] = 5
    }

    table.sort(clients, function(a, b)
        local pa = priority[(a.class or ""):lower()] or 999
        local pb = priority[(b.class or ""):lower()] or 999
        if pa == pb then
            return (a.name or "") < (b.name or "")
        end
        return pa < pb
    end)

    local items = {}
    for _, c in ipairs(clients) do
        table.insert(items, {
            string.format("%s — %s", c.class or "?", c.name or "—"),
            function()
                c:jump_to()
            end,
            c.icon
        })
    end

    -- Create and show the menu
    -- Note: 'theme_menu_w1' should be defined elsewhere in your config or replaced with {}
    client_menu_instance = awful.menu({items = items, theme = theme_menu_w1 or { width = 400 }}) 
    client_menu_instance:show()

    -- === THE MAGIC PART ===
    -- Automatically close the menu when the mouse leaves the menu area
    client_menu_instance.wibox:connect_signal("mouse::leave", function()
        if client_menu_instance then
            client_menu_instance:hide()
        end
    end)
end

-- 4. Function to create the Left Hot Corner
local function create_smart_hot_corner(s)
    -- Avoid duplicate creation on config reload
    if s.my_hot_corner then return end

    local hot_corner = wibox({
        screen = s,
        x = s.geometry.x, -- Left edge (0)
        y = s.geometry.y, -- Top edge (0)
        width = 5,        -- Active zone width (pixels)
        height = 5,       -- Active zone height
        bg = "#00000000", -- Transparent
        ontop = true,
        visible = true,
        type = "dock"
    })

    hot_corner:connect_signal("mouse::enter", function()
        -- Trigger only if timer is not running AND menu is not already open
        if not hot_corner_timer.started and 
           (not client_menu_instance or not client_menu_instance.wibox.visible) then
            
            show_sorted_client_menu()
            hot_corner_timer:start() -- Start cooldown timer
        end
    end)
    
    -- Save reference to the screen object
    s.my_hot_corner = hot_corner
end

-- 5. Activate on all screens
awful.screen.connect_for_each_screen(function(s)
    create_smart_hot_corner(s)
end)

rc2.lua

local function show_sorted_client_menu()
    local clients = client.get()

    -- Sort priority (lower number = higher in the list)
    local priority = {
        ["google-chrome"] = 1,
        ["org.mozilla.firefox"] = 2,
        ["jetbrains-pycharm-ce"] = 3,
        ["sublime_text"] = 4,
        ["kitty"] = 5
    }

    table.sort(clients, function(a, b)
        -- Use :lower() to match "Google-chrome" and "google-chrome"
        local pa = priority[(a.class or ""):lower()] or 999
        local pb = priority[(b.class or ""):lower()] or 999
        
        -- If priorities are equal, sort by name
        if pa == pb then
            return (a.name or "") < (b.name or "")
        end
        return pa < pb
    end)

    local items = {}
    for _, c in ipairs(clients) do
        table.insert(items, {
            string.format("%s — %s", c.class or "?", c.name or "—"),
            function() c:jump_to() end,
            c.icon
        })
    end

    -- Show the menu
    awful.menu({items = items, theme = { width = 400 }}):show()
end

rc3.lua

-- Subscribe to the global keyboard layout change signal
awesome.connect_signal("xkb::group_changed", function()
    -- Get current layout index (0 = US, 1 = Secondary)
    local layout_index = awesome.xkb_get_layout_group()
    
    -- 1. Icon logic (optional)
    local icon = "🇺🇸" 
    if layout_index == 1 then
        icon = "🇺🇦" 
    end
    -- (Update icon widget code here if needed)

    -- 2. Bar Color Logic
    local target_bg = beautiful.bg_normal or "#222222" -- Default color
    
    if layout_index == 1 then
        target_bg = "#550000" -- Dark red warning color
    end

    -- Apply the background color to all wiboxes on all screens
    for s in screen do
        if s.mywibox then
            s.mywibox.bg = target_bg
        end
    end
end)