mirror of
https://github.com/koreader/koreader
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8207e4bdf2
Simply don't mention any values when the device DPI isn't known. A more robust auto-DPI info function could be added to Screen but I'm not sure if it's worth the trouble. Fixes https://github.com/koreader/koreader/pull/4389#issuecomment-454552446
112 lines
4.3 KiB
Lua
112 lines
4.3 KiB
Lua
local _ = require("gettext")
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local Screen = require("device").screen
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local T = require("ffi/util").template
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local function dpi() return G_reader_settings:readSetting("screen_dpi") end
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local function custom() return G_reader_settings:readSetting("custom_screen_dpi") end
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local function setDPI(_dpi)
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local InfoMessage = require("ui/widget/infomessage")
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local UIManager = require("ui/uimanager")
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UIManager:show(InfoMessage:new{
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text = _dpi and T(_("DPI set to %1. This will take effect after restarting."), _dpi)
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or _("DPI set to auto. This will take effect after restarting."),
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})
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G_reader_settings:saveSetting("screen_dpi", _dpi)
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Screen:setDPI(_dpi)
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end
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local dpi_auto = Screen.device.screen_dpi
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local dpi_small = 120
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local dpi_medium = 160
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local dpi_large = 240
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local dpi_xlarge = 320
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local dpi_xxlarge = 480
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local dpi_xxxlarge = 640
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return {
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text = _("Screen DPI"),
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sub_item_table = {
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{
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text = dpi_auto and T(_("Auto DPI (%1)"), dpi_auto) or _("Auto DPI"),
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help_text = _("The DPI of your screen is automatically detected so items can be drawn with the right amount of pixels. This will usually display at (roughly) the same size on different devices, while remaining sharp. Increasing the DPI setting will result in larger text and icons, while a lower DPI setting will look smaller on the screen."),
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checked_func = function()
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return dpi() == nil
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end,
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callback = function() setDPI() end
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},
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{
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text = T(_("Small (%1)"), dpi_small),
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checked_func = function()
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local _dpi, _custom = dpi(), custom()
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return _dpi and _dpi <= 140 and _dpi ~= _custom
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end,
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callback = function() setDPI(dpi_small) end
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},
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{
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text = T(_("Medium (%1)"), dpi_medium),
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checked_func = function()
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local _dpi, _custom = dpi(), custom()
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return _dpi and _dpi > 140 and _dpi <= 200 and _dpi ~= _custom
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end,
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callback = function() setDPI(dpi_medium) end
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},
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{
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text = T(_("Large (%1)"), dpi_large),
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checked_func = function()
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local _dpi, _custom = dpi(), custom()
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return _dpi and _dpi > 200 and _dpi <= 280 and _dpi ~= _custom
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end,
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callback = function() setDPI(dpi_large) end
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},
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{
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text = T(_("Extra large (%1)"), dpi_xlarge),
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checked_func = function()
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local _dpi, _custom = dpi(), custom()
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return _dpi and _dpi > 280 and _dpi <= 400 and _dpi ~= _custom
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end,
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callback = function() setDPI(dpi_xlarge) end
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},
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{
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text = T(_("Extra-Extra Large (%1)"), dpi_xxlarge),
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checked_func = function()
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local _dpi, _custom = dpi(), custom()
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return _dpi and _dpi > 400 and _dpi <= 560 and _dpi ~= _custom
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end,
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callback = function() setDPI(dpi_xxlarge) end
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},
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{
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text = T(_("Extra-Extra-Extra Large (%1)"), dpi_xxxlarge),
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checked_func = function()
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local _dpi, _custom = dpi(), custom()
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return _dpi and _dpi > 560 and _dpi ~= _custom
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end,
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callback = function() setDPI(dpi_xxxlarge) end
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},
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{
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text_func = function()
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return T(_("Custom DPI: %1 (hold to set)"), custom() or dpi_auto)
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end,
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checked_func = function()
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local _dpi, _custom = dpi(), custom()
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return _custom and _dpi == _custom
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end,
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callback = function() setDPI(custom() or dpi_auto) end,
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hold_input = {
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title = _("Enter custom screen DPI"),
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type = "number",
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hint = "(90 - 900)",
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callback = function(input)
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local _dpi = tonumber(input)
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_dpi = _dpi < 90 and 90 or _dpi
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_dpi = _dpi > 900 and 900 or _dpi
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G_reader_settings:saveSetting("custom_screen_dpi", _dpi)
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setDPI(_dpi)
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end,
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ok_text = _("Set custom DPI"),
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},
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},
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}
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}
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