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127 lines
4.2 KiB
Lua
127 lines
4.2 KiB
Lua
local Device = require("device")
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if not Device:isKindle() or
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(Device.model ~= "KindleVoyage" and Device.model ~= "KindleOasis") then
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return { disabled = true, }
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end
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local ConfirmBox = require("ui/widget/confirmbox")
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local DataStorage = require("datastorage")
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local LuaSettings = require("luasettings")
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local UIManager = require("ui/uimanager")
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local WidgetContainer = require("ui/widget/container/widgetcontainer")
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local logger = require("logger")
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local _ = require("gettext")
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local T = require("ffi/util").template
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local AutoFrontlight = {
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settings = LuaSettings:open(DataStorage:getSettingsDir() .. "/autofrontlight.lua"),
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settings_id = 0,
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enabled = false,
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last_brightness = -1,
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}
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function AutoFrontlight:_schedule(settings_id)
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if not self.enabled then
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logger.dbg("AutoFrontlight:_schedule() is disabled")
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return
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end
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if settings_id ~= self.settings_id then
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logger.dbg("AutoFrontlight:_schedule(): registered settings_id ",
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settings_id,
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" does not equal to current one ",
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self.settings_id)
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return
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end
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logger.dbg("AutoFrontlight:_schedule() starts with settings_id ", settings_id)
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self:_action()
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logger.dbg("AutoFrontlight:_schedule() @ ", os.time(), ", it should be executed at ", os.time() + 2)
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UIManager:scheduleIn(2, function()
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self:_schedule(settings_id)
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end)
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end
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function AutoFrontlight:_action()
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logger.dbg("AutoFrontlight:_action() @ ", os.time())
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local current_level = Device:ambientBrightnessLevel()
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logger.dbg("AutoFrontlight:_action(): Retrieved ambient brightness level: ", current_level)
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if self.last_brightness == current_level then
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logger.dbg("AutoFrontlight:_action(): recorded brightness is same as current level ",
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self.last_brightness)
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return
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end
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if current_level <= 1 then
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logger.dbg("AutoFrontlight: going to turn on frontlight")
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Device:getPowerDevice():turnOnFrontlight()
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elseif current_level >= 3 then
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logger.dbg("AutoFrontlight: going to turn off frontlight")
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Device:getPowerDevice():turnOffFrontlight()
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end
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self.last_brightness = current_level
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end
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function AutoFrontlight:init()
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self.enabled = self.settings:nilOrTrue("enable")
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self.settings_id = self.settings_id + 1
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logger.dbg("AutoFrontlight:init() self.enabled: ", self.enabled, " with id ", self.settings_id)
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self:_schedule(self.settings_id)
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end
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function AutoFrontlight:flipSetting()
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self.settings:flipNilOrTrue("enable")
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self:init()
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end
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function AutoFrontlight:onFlushSettings()
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self.settings:flush()
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end
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AutoFrontlight:init()
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local AutoFrontlightWidget = WidgetContainer:new{
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name = "AutoFrontlight",
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}
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function AutoFrontlightWidget:init()
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-- self.ui and self.ui.menu are nil in unittests.
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if self.ui ~= nil and self.ui.menu ~= nil then
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self.ui.menu:registerToMainMenu(self)
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end
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end
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function AutoFrontlightWidget:flipSetting()
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AutoFrontlight:flipSetting()
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end
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-- For test only.
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function AutoFrontlightWidget:deprecateLastTask()
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logger.dbg("AutoFrontlightWidget:deprecateLastTask() @ ", AutoFrontlight.settings_id)
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AutoFrontlight.settings_id = AutoFrontlight.settings_id + 1
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end
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function AutoFrontlightWidget:addToMainMenu(menu_items)
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menu_items.auto_frontlight = {
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text = _("Auto frontlight"),
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callback = function()
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UIManager:show(ConfirmBox:new{
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text = T(_("Auto frontlight detects the brightness of the environment and automatically turn on and off the frontlight.\nFrontlight will be turned off to save battery in bright environment, and turned on in dark environment.\nDo you want to %1 it?"),
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AutoFrontlight.enabled and _("disable") or _("enable")),
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ok_text = AutoFrontlight.enabled and _("Disable") or _("Enable"),
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ok_callback = function()
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self:flipSetting()
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end
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})
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end,
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checked_func = function() return AutoFrontlight.enabled end,
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}
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end
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function AutoFrontlightWidget:onFlushSettings()
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AutoFrontlight:onFlushSettings()
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end
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return AutoFrontlightWidget
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