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mirror of https://github.com/koreader/koreader synced 2024-11-04 12:00:25 +00:00
koreader/frontend/device/pocketbook/powerd.lua
NiLuJe 9af3e95d9d Kindle: Fix a smattering of frontlight bugs
* afterResume had *two* different implementations, so the historical one
  that handled frontlight fixups no longer ran
  (regression since #10426)
* isFrontlightOn was completely broken, for a couple of reasons:
  * There was no is isFrontlightOnHW implementation, so when it ran, it
    mostly always thought the frontlight was on, because
    self.fl_intensity doesn't change on toggle off.
  * _decideFrontlightState was never called on Kindle,
    so isFrontlightOnHW was never really called, making isFrontlightOn
    completely useless. Call it in setIntensityHW's coda, as it ought to
    be. And properly document that.

Generic *was* calling _decideFrontlightState is setIntensity, but
*before* actually setting the frontlight, which makes no goddamn sense,
so get rid of that, too.

* Also fix frontlight toggle notifications (regression since #10305)

TL;DR: The PowerD API being a mess strikes again.
2023-11-25 20:53:36 +01:00

92 lines
2.6 KiB
Lua

local BasePowerD = require("device/generic/powerd")
local ffi = require("ffi")
local inkview = ffi.load("inkview")
local PocketBookPowerD = BasePowerD:new{
is_charging = nil,
fl_min = 0,
fl_max = 100,
fl_warmth_min = 0,
fl_warmth_max = 100,
}
function PocketBookPowerD:frontlightIntensityHW()
-- Always update fl_intensity (and perhaps fl_warmth) from the OS value whenever queried (it's fast).
-- This way koreader settings can stay in sync even if the value is changed behind its back.
self.fl_intensity = math.max(0, inkview.GetFrontlightState())
if self.device:hasNaturalLight() then
self.fl_warmth = math.max(0, inkview.GetFrontlightColor())
end
return self.fl_intensity
end
function PocketBookPowerD:frontlightIntensity()
if not self.device:hasFrontlight() then return 0 end
if self:isFrontlightOff() then return 0 end
--- @note: We actually have a working frontlightIntensityHW implementation,
--- use it instead of returning a cached self.fl_intensity like BasePowerD.
return self:frontlightIntensityHW()
end
function PocketBookPowerD:setIntensityHW(intensity)
local v2api = pcall(function()
inkview.SetFrontlightEnabled(intensity == 0 and 0 or 1)
end)
if intensity == 0 then
-- -1 is valid only for the old api, on newer firmwares that's just a bogus brightness level
if not v2api then
inkview.SetFrontlightState(-1)
end
else
inkview.SetFrontlightState(intensity)
end
-- We have a custom isFrontlightOn implementation, so this is redundant
self:_decideFrontlightState()
end
function PocketBookPowerD:isFrontlightOn()
if not self.device:hasFrontlight() then return false end
-- Query directly instead of assuming from cached value.
local enabled = inkview.GetFrontlightState() >= 0
pcall(function()
enabled = inkview.GetFrontlightEnabled() > 0
end)
return enabled
end
function PocketBookPowerD:setWarmthHW(level)
return inkview.SetFrontlightColor(level)
end
function PocketBookPowerD:frontlightWarmthHW()
return inkview.GetFrontlightColor()
end
function PocketBookPowerD:getCapacityHW()
return inkview.GetBatteryPower()
end
function PocketBookPowerD:isChargingHW()
if inkview.IsCharging() > 0 then
return true
else
return false
end
end
function PocketBookPowerD:beforeSuspend()
-- Inhibit user input and emit the Suspend event.
self.device:_beforeSuspend()
end
function PocketBookPowerD:afterResume()
self:invalidateCapacityCache()
-- Restore user input and emit the Resume event.
self.device:_afterResume()
end
return PocketBookPowerD