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mirror of https://github.com/koreader/koreader synced 2024-11-04 12:00:25 +00:00
koreader/frontend/ui/elements/screen_dpi_menu_table.lua
2016-06-28 00:43:23 +08:00

75 lines
2.3 KiB
Lua

local _ = require("gettext")
local Screen = require("device").screen
local function dpi() return G_reader_settings:readSetting("screen_dpi") end
local function custom() return G_reader_settings:readSetting("custom_screen_dpi") end
local function setDPI(_dpi)
local InfoMessage = require("ui/widget/infomessage")
local UIManager = require("ui/uimanager")
UIManager:show(InfoMessage:new{
text = _("This will take effect on next restart."),
})
Screen:setDPI(_dpi)
end
return {
text = _("Screen DPI"),
sub_item_table = {
{
text = _("Auto"),
checked_func = function()
return dpi() == nil
end,
callback = function() setDPI() end
},
{
text = _("Small"),
checked_func = function()
local _dpi, _custom = dpi(), custom()
return _dpi and _dpi <= 140 and _dpi ~= _custom
end,
callback = function() setDPI(120) end
},
{
text = _("Medium"),
checked_func = function()
local _dpi, _custom = dpi(), custom()
return _dpi and _dpi > 140 and _dpi <= 200 and _dpi ~= _custom
end,
callback = function() setDPI(160) end
},
{
text = _("Large"),
checked_func = function()
local _dpi, _custom = dpi(), custom()
return _dpi and _dpi > 200 and _dpi ~= _custom
end,
callback = function() setDPI(240) end
},
{
text = _("Custom DPI") .. ": " .. (custom() or 160),
checked_func = function()
local _dpi, _custom = dpi(), custom()
return _custom and _dpi == _custom
end,
callback = function() setDPI(custom() or 160) end,
hold_input = {
title = _("Input screen DPI"),
type = "number",
hint = "(90 - 330)",
callback = function(input)
local _dpi = tonumber(input)
_dpi = _dpi < 90 and 90 or _dpi
_dpi = _dpi > 330 and 330 or _dpi
G_reader_settings:saveSetting("custom_screen_dpi", _dpi)
setDPI(_dpi)
end,
},
},
}
}