mpv控制KDE夜间颜色脚本

night-color.lua

-- Global to remember if night color was on before mpv
local night_color_was_enabled = false

-- Run a shell command and capture its stdout
local function execute_command(cmd)
    local handle = io.popen(cmd)
    local result = handle:read("*a")
    handle:close()
    return result
end

-- Check if Night Light is enabled by querying currentTemperature
local function is_night_color_enabled()
    -- Query the color temperature (6500 K = off/daylight)
    local raw = execute_command(
        "qdbus6 org.kde.KWin /org/kde/KWin/NightLight " ..
        "org.kde.KWin.NightLight.currentTemperature"
    )
    -- Trim whitespace and convert to number
    local temp = tonumber(raw:match("%d+")) or 6500
    -- If temp < 6500, night‑color is active
    return temp < 6500
end

-- Toggle via the KDE global‑accelerator shortcut
local function toggle_night_color()
    os.execute(
        'qdbus6 org.kde.kglobalaccel /component/kwin ' ..
        'org.kde.kglobalaccel.Component.invokeShortcut "Toggle Night Color"'
    )
end

-- On file start: disable if currently on
local function manage_night_color_on_start()
    if is_night_color_enabled() then
        night_color_was_enabled = true
        toggle_night_color()
        mp.osd_message("Night color disabled")
    else
        night_color_was_enabled = false
    end
end

-- On file end/idle: restore previous state
local function restore_night_color_on_end()
    if night_color_was_enabled then
        toggle_night_color()
        mp.osd_message("Night color re‑enabled")
    end
end

-- Hook into mpv events
mp.register_event("start-file", manage_night_color_on_start)
mp.register_event("end-file", restore_night_color_on_end)
mp.register_event("idle", restore_night_color_on_end)