Notifications: options to show none/some/more (#7718)

Notification: adds some functions so it can be used as
a notification manager.
Have various bits of code emitting events that may generate
notifications advertize themselves as the source for following
notifications.
Add a menu to allow selecting some subsets of sources
to show or hide.

frontend/apps/reader/modules/readerfont.lua

@@ -15,6 +15,7 @@ local UIManager = require("ui/uimanager")
 local T = require("ffi/util").template
 local _ = require("gettext")
 local C_ = _.pgettext
+local optionsutil = require("ui/data/optionsutil")
 
 local ReaderFont = InputContainer:new{
     font_face = nil,
@@ -36,11 +37,11 @@ function ReaderFont:init()
             IncreaseSize = {
                 { "Shift", Input.group.PgFwd },
                 doc = "increase font size",
-                event = "ChangeSize", args = "increase" },
+                event = "ChangeSize", args = 0.5 },
             DecreaseSize = {
                 { "Shift", Input.group.PgBack },
                 doc = "decrease font size",
-                event = "ChangeSize", args = "decrease" },
+                event = "ChangeSize", args = -0.5 },
         }
     end
     -- Build face_table for menu
@@ -195,13 +196,8 @@ end
 --[[
     UpdatePos event is used to tell ReaderRolling to update pos.
 --]]
-function ReaderFont:onChangeSize(direction, font_delta)
-    local delta = direction == "decrease" and -1 or 1
-    if font_delta then
-        self.font_size = self.font_size + font_delta * delta
-    else
-        self.font_size = self.font_size + delta
-    end
+function ReaderFont:onChangeSize(delta)
+    self.font_size = self.font_size + delta
     self.ui:handleEvent(Event:new("SetFontSize", self.font_size))
     return true
 end
@@ -213,19 +209,15 @@ function ReaderFont:onSetFontSize(new_size)
     self.font_size = new_size
     self.ui.document:setFontSize(Screen:scaleBySize(new_size))
     self.ui:handleEvent(Event:new("UpdatePos"))
-    UIManager:show(Notification:new{
-        text = T( _("Font size set to %1."), self.font_size),
-    })
+    Notification:notify(T(_("Font size set to %1."), self.font_size))
     return true
 end
 
 function ReaderFont:onSetLineSpace(space)
     self.line_space_percent = math.min(200, math.max(50, space))
-    UIManager:show(Notification:new{
-        text = T( _("Line spacing set to %1%."), self.line_space_percent),
-    })
     self.ui.document:setInterlineSpacePercent(self.line_space_percent)
     self.ui:handleEvent(Event:new("UpdatePos"))
+    Notification:notify(T(_("Line spacing set to %1%."), self.line_space_percent))
     return true
 end
 
@@ -233,6 +225,7 @@ function ReaderFont:onSetFontBaseWeight(weight)
     self.font_base_weight = weight
     self.ui.document:setFontBaseWeight(weight)
     self.ui:handleEvent(Event:new("UpdatePos"))
+    Notification:notify(T(_("Font weight set to %1."), optionsutil:getOptionText("SetFontBaseWeight", weight)))
     return true
 end
 
@@ -240,6 +233,7 @@ function ReaderFont:onSetFontHinting(mode)
     self.font_hinting = mode
     self.ui.document:setFontHinting(mode)
     self.ui:handleEvent(Event:new("UpdatePos"))
+    Notification:notify(T(_("Font hinting set to %1."), optionsutil:getOptionText("SetFontHinting", mode)))
     return true
 end
 
@@ -247,6 +241,7 @@ function ReaderFont:onSetFontKerning(mode)
     self.font_kerning = mode
     self.ui.document:setFontKerning(mode)
     self.ui:handleEvent(Event:new("UpdatePos"))
+    Notification:notify(T(_("Font kerning set to %1."), optionsutil:getOptionText("SetFontKerning", mode)))
     return true
 end
 
@@ -254,6 +249,7 @@ function ReaderFont:onSetWordSpacing(values)
     self.word_spacing = values
     self.ui.document:setWordSpacing(values)
     self.ui:handleEvent(Event:new("UpdatePos"))
+    Notification:notify(T(_("Word spacing set to %1%,  %2%."), values[1], values[2]))
     return true
 end
 
@@ -261,6 +257,7 @@ function ReaderFont:onSetWordExpansion(value)
     self.word_expansion = value
     self.ui.document:setWordExpansion(value)
     self.ui:handleEvent(Event:new("UpdatePos"))
+    Notification:notify(T(_("Word expansion set to %1%."), value))
     return true
 end
 
@@ -268,10 +265,8 @@ function ReaderFont:onSetFontGamma(gamma)
     self.gamma_index = gamma
     self.ui.document:setGammaIndex(self.gamma_index)
     local gamma_level = self.ui.document:getGammaLevel()
-    UIManager:show(Notification:new{
-        text = T( _("Font gamma set to %1."), gamma_level),
-    })
     self.ui:handleEvent(Event:new("RedrawCurrentView"))
+    Notification:notify(T(_("Font gamma set to %1."), optionsutil:getOptionText("SetFontGamma", gamma_level)))
     return true
 end
 
@@ -300,7 +295,7 @@ end
 function ReaderFont:makeDefault(face, touchmenu_instance)
     if face then
         UIManager:show(MultiConfirmBox:new{
-            text = T( _("Would you like %1 to be used as the default font (★), or the fallback font (<28>)?\n\nCharacters not found in the active font are shown in the fallback font instead."), face),
+            text = T(_("Would you like %1 to be used as the default font (★), or the fallback font (<28>)?\n\nCharacters not found in the active font are shown in the fallback font instead."), face),
             choice1_text = _("Default"),
             choice1_callback = function()
                 G_reader_settings:saveSetting("cre_font", face)
@@ -342,21 +337,15 @@ end
 
 function ReaderFont:onIncreaseFontSize(ges)
     local delta_int = self:gesToFontSize(ges)
-    local info = Notification:new{text = _("Increasing font size…")}
-    UIManager:show(info)
-    UIManager:forceRePaint()
-    self:onChangeSize("increase", delta_int)
-    UIManager:close(info)
+    Notification:notify(_("Increasing font size…"), true)
+    self:onChangeSize(delta_int)
     return true
 end
 
 function ReaderFont:onDecreaseFontSize(ges)
     local delta_int = self:gesToFontSize(ges)
-    local info = Notification:new{text = _("Decreasing font size…")}
-    UIManager:show(info)
-    UIManager:forceRePaint()
-    self:onChangeSize("decrease", delta_int)
-    UIManager:close(info)
+    Notification:notify(_("Decreasing font size…"), true)
+    self:onChangeSize(-delta_int)
     return true
 end
 

frontend/apps/reader/modules/readertypeset.lua

@@ -5,7 +5,9 @@ local InfoMessage = require("ui/widget/infomessage")
 local InputContainer = require("ui/widget/container/inputcontainer")
 local UIManager = require("ui/uimanager")
 local Math = require("optmath")
+local Notification = require("ui/widget/notification")
 local lfs = require("libs/libkoreader-lfs")
+local optionsutil = require("ui/data/optionsutil")
 local _ = require("gettext")
 local Screen = require("device").screen
 local T = require("ffi/util").template
@@ -136,16 +138,19 @@ end
 
 function ReaderTypeset:onToggleEmbeddedStyleSheet(toggle)
     self:toggleEmbeddedStyleSheet(toggle)
+    Notification:notify(T( _("Embedded styles are %1."), optionsutil:getOptionText("ToggleEmbeddedStyleSheet", toggle)))
     return true
 end
 
 function ReaderTypeset:onToggleEmbeddedFonts(toggle)
     self:toggleEmbeddedFonts(toggle)
+    Notification:notify(T( _("Embedded fonts are %1."), optionsutil:getOptionText("ToggleEmbeddedFonts", toggle)))
     return true
 end
 
 function ReaderTypeset:onToggleImageScaling(toggle)
     self:toggleImageScaling(toggle)
+    Notification:notify(T( _("Image scaling set to %1."), optionsutil:getOptionText("ToggleImageScaling", toggle)))
     return true
 end
 
@@ -156,6 +161,7 @@ end
 
 function ReaderTypeset:onSetBlockRenderingMode(mode)
     self:setBlockRenderingMode(mode)
+    Notification:notify(T( _("Render mode set to %1."), optionsutil:getOptionText("SetBlockRenderingMode", mode)))
     return true
 end
 
@@ -177,6 +183,7 @@ local OBSOLETED_CSS = {
 
 function ReaderTypeset:onSetRenderDPI(dpi)
     self:setRenderDPI(dpi)
+    Notification:notify(T( _("Zoom set to %1."), optionsutil:getOptionText("SetRenderDPI", dpi)))
     return true
 end
 

frontend/apps/reader/modules/readerview.lua

@@ -9,6 +9,7 @@ local Geom = require("ui/geometry")
 local Event = require("ui/event")
 local IconWidget = require("ui/widget/iconwidget")
 local InfoMessage = require("ui/widget/infomessage")
+local Notification = require("ui/widget/notification")
 local OverlapGroup = require("ui/widget/overlapgroup")
 local ReaderDogear = require("apps/reader/modules/readerdogear")
 local ReaderFlipping = require("apps/reader/modules/readerflipping")
@@ -17,6 +18,7 @@ local TimeVal = require("ui/timeval")
 local UIManager = require("ui/uimanager")
 local dbg = require("dbg")
 local logger = require("logger")
+local optionsutil = require("ui/data/optionsutil")
 local _ = require("gettext")
 local Screen = Device.screen
 local T = require("ffi/util").template
@@ -713,6 +715,7 @@ function ReaderView:onSetRotationMode(rotation)
     self.ui:handleEvent(Event:new("SetDimensions", new_screen_size))
     self.ui:onScreenResize(new_screen_size)
     self.ui:handleEvent(Event:new("InitScrollPageStates"))
+    Notification:notify(T(_("Rotation mode set to %1."), optionsutil:getOptionText("SetRotationMode", rotation)))
     return true
 end
 
@@ -846,10 +849,12 @@ function ReaderView:onGammaUpdate(gamma)
     if self.page_scroll then
         self.ui:handleEvent(Event:new("UpdateScrollPageGamma", gamma))
     end
+    Notification:notify(T(_("Font gamma set to  %1."), gamma))
 end
 
 function ReaderView:onFontSizeUpdate(font_size)
     self.ui:handleEvent(Event:new("ReZoom", font_size))
+    Notification:notify(T(_("Font zoom set to %1."), font_size))
 end
 
 function ReaderView:onDefectSizeUpdate()
@@ -869,6 +874,7 @@ function ReaderView:onSetViewMode(new_mode)
         self.view_mode = new_mode
         self.ui.document:setViewMode(new_mode)
         self.ui:handleEvent(Event:new("ChangeViewMode"))
+        Notification:notify(T( _("View mode set to %1."), optionsutil:getOptionText("SetViewMode", new_mode)))
     end
 end
 
@@ -877,6 +883,7 @@ end
 --another source (eg. coptions.lua) triggering a redraw is needed.
 function ReaderView:onPageGapUpdate(page_gap)
     self.page_gap.height = page_gap
+    Notification:notify(T(_("Page gap set to %1."), page_gap))
     return true
 end
 

frontend/device/devicelistener.lua

@@ -51,9 +51,7 @@ function DeviceListener:onShowIntensity()
     else
         new_text = T(_("Frontlight intensity set to %1."), powerd:frontlightIntensity())
     end
-    UIManager:show(Notification:new{
-        text = new_text,
-    })
+    Notification:notify(new_text)
     return true
 end
 
@@ -62,9 +60,7 @@ function DeviceListener:onShowWarmth(value)
     if powerd.fl_warmth ~= nil then
         -- powerd.fl_warmth holds the warmth-value in the internal koreader scale [0,100]
         -- powerd.fl_warmth_max is the maximum value the hardware accepts
-        UIManager:show(Notification:new{
-            text = T(_("Warmth set to %1."), math.floor(powerd.fl_warmth/100*powerd.fl_warmth_max)),
-        })
+        Notification:notify(T(_("Warmth set to %1."), math.floor(powerd.fl_warmth/100*powerd.fl_warmth_max)))
     end
     return true
 end
@@ -175,9 +171,7 @@ if Device:hasFrontlight() then
         if powerd.fl_warmth == nil then return false end
 
         if powerd.auto_warmth then
-            UIManager:show(Notification:new{
-                text = _("Warmth is handled automatically."),
-            })
+            Notification:notify(_("Warmth is handled automatically."))
             return true
         end
 
@@ -220,9 +214,7 @@ if Device:hasFrontlight() then
         else
             new_text = _("Frontlight disabled.")
         end
-        UIManager:show(Notification:new{
-            text = new_text,
-        })
+        Notification:notify(new_text)
         return true
     end
 

frontend/dispatcher.lua

@@ -30,6 +30,7 @@ Each setting contains:
 local CreOptions = require("ui/data/creoptions")
 local Device = require("device")
 local Event = require("ui/event")
+local Notification = require("ui/widget/notification")
 local ReaderZooming = require("apps/reader/modules/readerzooming")
 local Screen = require("device").screen
 local UIManager = require("ui/uimanager")
@@ -619,6 +620,7 @@ function Dispatcher:execute(ui, settings, gesture)
         if settingsList[k] ~= nil and (settingsList[k].conditions == nil or settingsList[k].conditions == true) then
             -- Be sure we don't send a document setting event if there's not yet or no longer a document
             if ui.document or (not settingsList[k].paging and not settingsList[k].rolling) then
+                Notification:setNotifySource(Notification.SOURCE_DISPATCHER)
                 if settingsList[k].category == "none" then
                     if settingsList[k].arg ~= nil then
                         ui:handleEvent(Event:new(settingsList[k].event, settingsList[k].arg))
@@ -653,6 +655,7 @@ function Dispatcher:execute(ui, settings, gesture)
             end
         end
     end
+    Notification:resetNotifySource()
 end
 
 return Dispatcher

frontend/ui/data/creoptions.lua

@@ -432,7 +432,7 @@ Note that your selected font size is not affected by this setting.]]),
                 },
                 values = {},
                 event = "ChangeSize",
-                args = {"decrease", "increase"},
+                args = { -0.5, 0.5 },
                 alternate = false,
                 name_text_hold_callback = function(configurable, __, prefix)
                     local opt = {

frontend/ui/data/optionsutil.lua

@@ -6,6 +6,7 @@ local InfoMessage = require("ui/widget/infomessage")
 local UIManager = require("ui/uimanager")
 local _ = require("gettext")
 local T = require("ffi/util").template
+local logger = require("logger")
 
 local optionsutil = {}
 
@@ -147,4 +148,58 @@ Default margins:
     end
 end
 
+function optionsutil:generateOptionText()
+    local CreOptions = require("ui/data/creoptions")
+
+    self.option_text_table = {}
+    self.option_args_table = {}
+    for i = 1, #CreOptions do
+        for j = 1, #CreOptions[i].options do
+            local option = CreOptions[i].options[j]
+            if option.event then
+                if option.labels then
+                    self.option_text_table[option.event] = option.labels
+                elseif option.toggle then
+                    self.option_text_table[option.event] = option.toggle
+                end
+                self.option_args_table[option.event] = option.args
+            end
+        end
+    end
+end
+
+function optionsutil:getOptionText(event, val)
+    if not self.option_text_table then
+        self:generateOptionText()
+    end
+    if not event or val == nil then
+        logger.err("[OptionsCatalog:getOptionText] Either event or val not set. This should not happen!")
+        return ""
+    end
+    if not self.option_text_table[event] then
+        logger.err("[OptionsCatalog:getOptionText] Event:" .. event .. " not found in option_text_table")
+        return ""
+    end
+
+    local text
+    if type(val) == "number" then
+        text = self.option_text_table[event][val + 1] -- options count from zero
+    end
+
+    -- if there are args, try to find the adequate toggle
+    if self.option_args_table[event] then
+        for i, args in pairs(self.option_args_table[event]) do
+            if args == val then
+                text = self.option_text_table[event][i]
+            end
+        end
+    end
+
+    if text then
+        return text
+    else
+        return val
+    end
+end
+
 return optionsutil

frontend/ui/elements/common_settings_menu_table.lua

@@ -198,6 +198,7 @@ common_settings.screen = {
 common_settings.screen_rotation = require("ui/elements/screen_rotation_menu_table")
 common_settings.screen_dpi = require("ui/elements/screen_dpi_menu_table")
 common_settings.screen_eink_opt = require("ui/elements/screen_eink_opt_menu_table")
+common_settings.screen_notification = require("ui/elements/screen_notification_menu_table")
 common_settings.menu_activate = require("ui/elements/menu_activate")
 common_settings.page_turns = require("ui/elements/page_turns")
 common_settings.screen_disable_double_tab = require("ui/elements/screen_disable_double_tap_table")

frontend/ui/elements/reader_menu_order.lua

@@ -125,6 +125,8 @@ local order = {
         "----------------------------",
         "screen_timeout",
         "fullscreen",
+        "----------------------------",
+        "screen_notification",
     },
     taps_and_gestures = {
         "gesture_manager",

frontend/ui/elements/screen_notification_menu_table.lua

@@ -0,0 +1,83 @@
+local Notification = require("ui/widget/notification")
+local _ = require("gettext")
+
+local band = bit.band
+local bor = bit.bor
+
+local function setMask(source)
+    G_reader_settings:saveSetting("notification_sources_to_show_mask", source)
+end
+
+local function getMask()
+    return G_reader_settings:readSetting("notification_sources_to_show_mask") or Notification.SOURCE_DEFAULT
+end
+
+return {
+    text = _("Notifications"),
+    help_text = _([[Notification popups may be shown at the top of screen on various occasions.
+This allows selecting which to show or hide.]]),
+    checked_func = function()
+        local value = G_reader_settings:readSetting("notification_sources_to_show_mask") or Notification.SOURCE_DEFAULT
+        return  value ~= 0
+    end,
+    sub_item_table = {
+        {
+        text = _("No notifications"),
+        help_text = _("No notification popups will be shown."),
+        checked_func = function()
+            return getMask() == Notification.SOURCE_NONE
+        end,
+        callback = function()
+            setMask(Notification.SOURCE_NONE)
+        end,
+        separator = true,
+        },
+        {
+        text = _("Some notifications from bottom menu"),
+        help_text = _("Show notification popups for bottom menu settings with no visual feedback."),
+        checked_func = function()
+            return band(getMask(), Notification.SOURCE_BOTTOM_MENU) == band(Notification.SOURCE_SOME, Notification.SOURCE_BOTTOM_MENU)
+        end,
+        callback = function()
+            if getMask() == Notification.SOURCE_ALL then
+                setMask(Notification.SOURCE_NONE)
+            end
+            setMask(bor(
+                    band(Notification.SOURCE_SOME, Notification.SOURCE_BOTTOM_MENU),
+                    band(getMask(), Notification.SOURCE_DISPATCHER)))
+        end,
+        },
+        {
+        text = _("More notifications from bottom menu"),
+        help_text = _("Show notification popups for more bottom menu settings."),
+        checked_func = function()
+            return band(getMask(), Notification.SOURCE_BOTTOM_MENU) == band(Notification.SOURCE_DEFAULT, Notification.SOURCE_BOTTOM_MENU)
+        end,
+        callback = function()
+            if getMask() == Notification.SOURCE_ALL then
+                setMask(Notification.SOURCE_NONE)
+            end
+            setMask(bor(
+                    band(Notification.SOURCE_DEFAULT, Notification.SOURCE_BOTTOM_MENU),
+                    band(getMask(), Notification.SOURCE_DISPATCHER)))
+        end,
+        },
+        {
+        text = _("Notifications from gestures and profiles"),
+        help_text = _("Show notification popups for changes from gestures and the profiles plugin."),
+        checked_func = function()
+            return band(getMask(), Notification.SOURCE_DISPATCHER) ~= 0 and getMask() ~= Notification.SOURCE_ALL
+        end,
+        callback = function()
+            if getMask() == Notification.SOURCE_ALL then
+                setMask(Notification.SOURCE_NONE)
+            end
+
+            setMask(bor(
+                    Notification.SOURCE_DISPATCHER,
+                    band(getMask(), Notification.SOURCE_BOTTOM_MENU)))
+        end,
+        separator = true,
+        },
+    }
+}

frontend/ui/widget/configdialog.lua

@@ -18,6 +18,7 @@ local IconButton = require("ui/widget/iconbutton")
 local IconWidget = require("ui/widget/iconwidget")
 local InputContainer = require("ui/widget/container/inputcontainer")
 local LineWidget = require("ui/widget/linewidget")
+local Notification = require("ui/widget/notification")
 local RightContainer = require("ui/widget/container/rightcontainer")
 local Size = require("ui/size")
 local TextWidget = require("ui/widget/textwidget")
@@ -85,12 +86,19 @@ function OptionTextItem:onTapSelect()
         item.underline_container.color = Blitbuffer.COLOR_WHITE
     end
     self.underline_container.color = Blitbuffer.COLOR_BLACK
+
+    Notification:setNotifySource(Notification.SOURCE_BOTTOM_MENU_ICON)
     self.config:onConfigChoose(self.values, self.name,
                     self.event, self.args,
                     self.events, self.current_item, self.hide_on_apply)
+
     UIManager:setDirty(self.config, function()
         return "fast", self[1].dimen
     end)
+
+    UIManager:tickAfterNext(function()
+        Notification:resetNotifySource()
+    end)
     return true
 end
 
@@ -157,12 +165,19 @@ function OptionIconItem:onTapSelect()
     end
     --self[1][1].invert = true
     self.underline_container.color = Blitbuffer.COLOR_BLACK
+
+    Notification:setNotifySource(Notification.SOURCE_BOTTOM_MENU_ICON)
     self.config:onConfigChoose(self.values, self.name,
                     self.event, self.args,
                     self.events, self.current_item, self.hide_on_apply)
+
     UIManager:setDirty(self.config, function()
         return "fast", self[1].dimen
     end)
+
+    UIManager:tickAfterNext(function()
+        Notification:resetNotifySource()
+    end)
     return true
 end
 
@@ -564,8 +579,12 @@ function ConfigOption:init()
                             if self.options[c].show_true_value_func and not self.options[c].more_options_param.show_true_value_func then
                                 self.options[c].more_options_param.show_true_value_func = self.options[c].show_true_value_func
                             end
+                            Notification:setNotifySource(Notification.SOURCE_BOTTOM_MENU_MORE)
                             self.config:onConfigMoreChoose(self.options[c].values, self.options[c].name,
                                 self.options[c].event, arg, name_text, self.options[c].more_options_param)
+                            UIManager:tickAfterNext(function()
+                                Notification:resetNotifySource()
+                            end)
                         end
                     end
                 }
@@ -591,20 +610,28 @@ function ConfigOption:init()
                     num_buttons = #self.options[c].values,
                     position = self.options[c].default_pos,
                     callback = function(arg)
+
                         if arg == "-" or arg == "+" then
+                            Notification:setNotifySource(Notification.SOURCE_BOTTOM_MENU_FINE)
                             self.config:onConfigFineTuneChoose(self.options[c].values, self.options[c].name,
                                 self.options[c].event, self.options[c].args, self.options[c].events, arg, self.options[c].hide_on_apply,
                                 self.options[c].fine_tune_param)
                         elseif arg == "⋮" then
+                            Notification:setNotifySource(Notification.SOURCE_BOTTOM_MENU_MORE)
                             self.config:onConfigMoreChoose(self.options[c].values, self.options[c].name,
                                 self.options[c].event, arg, name_text, self.options[c].more_options_param)
                         else
+                                Notification:setNotifySource(Notification.SOURCE_BOTTOM_MENU_PROGRESS)
                             self.config:onConfigChoose(self.options[c].values, self.options[c].name,
                                 self.options[c].event, self.options[c].args, self.options[c].events, arg, self.options[c].hide_on_apply)
                         end
+
                         UIManager:setDirty(self.config, function()
                             return "fast", switch.dimen
                         end)
+                        UIManager:tickAfterNext(function()
+                            Notification:resetNotifySource()
+                        end)
                     end,
                     hold_callback = function(arg)
                         if arg == "-" or arg == "+" then
@@ -1206,7 +1233,11 @@ function ConfigDialog:onConfigMoreChoose(values, name, event, args, name_text, m
                             -- it actually do it when provided a callback as argument
                             local dummy_callback = when_applied_callback and function() end
                             args = args or {}
+                            Notification:setNotifySource(Notification.SOURCE_BOTTOM_MENU_MORE)
                             self:onConfigEvent(event, value_tables, dummy_callback)
+                            UIManager:tickAfterNext(function()
+                                Notification:resetNotifySource()
+                            end)
                             self:update()
                         end
                     end,
@@ -1298,6 +1329,7 @@ function ConfigDialog:onConfigMoreChoose(values, name, event, args, name_text, m
                             -- it actually do it when provided a callback as argument
                             local dummy_callback = when_applied_callback and function() end
                             args = args or {}
+                            Notification:setNotifySource(Notification.SOURCE_BOTTOM_MENU_MORE)
                             if more_options_param.value_table then
                                 if more_options_param.args_table then
                                     self:onConfigEvent(event, more_options_param.args_table[spin.value_index], dummy_callback)
@@ -1307,6 +1339,9 @@ function ConfigDialog:onConfigMoreChoose(values, name, event, args, name_text, m
                             else
                                 self:onConfigEvent(event, spin.value, dummy_callback)
                             end
+                            UIManager:tickAfterNext(function()
+                                Notification:resetNotifySource()
+                            end)
                             self:update()
                         end
                     end,

frontend/ui/widget/notification.lua

@@ -19,6 +19,26 @@ local VerticalGroup = require("ui/widget/verticalgroup")
 local Input = Device.input
 local Screen = Device.screen
 
+local band = bit.band
+
+-- The following constants are positions in a bitfield
+local SOURCE_BOTTOM_MENU_ICON =     0x0001 -- icons in bottom menu
+local SOURCE_BOTTOM_MENU_TOGGLE =   0x0002 -- toggles in bottom menu
+local SOURCE_BOTTOM_MENU_FINE =     0x0004 -- toggles with fine-tuning ("increase", "+" etc)
+local SOURCE_BOTTOM_MENU_MORE =     0x0008 -- three dots in bottom menu
+local SOURCE_BOTTOM_MENU_PROGRESS = 0x0010 -- progress indicator on bottom menu
+local SOURCE_DISPATCHER =           0x0020 -- dispatcher
+local SOURCE_OTHER =                0x0040 -- all other sources (e.g. keyboard)
+
+-- All bottom menu bits
+local SOURCE_BOTTOM_MENU = SOURCE_BOTTOM_MENU_ICON + SOURCE_BOTTOM_MENU_TOGGLE + SOURCE_BOTTOM_MENU_FINE +
+        SOURCE_BOTTOM_MENU_MORE + SOURCE_BOTTOM_MENU_PROGRESS
+
+-- these values can be changed here
+local SOURCE_SOME = SOURCE_BOTTOM_MENU_FINE + SOURCE_DISPATCHER
+local SOURCE_DEFAULT = SOURCE_SOME + SOURCE_BOTTOM_MENU_MORE + SOURCE_BOTTOM_MENU_PROGRESS
+local SOURCE_ALL = SOURCE_BOTTOM_MENU + SOURCE_DISPATCHER + SOURCE_OTHER
+
 local Notification = InputContainer:new{
     face = Font:getFace("x_smallinfofont"),
     text = "Null Message",
@@ -28,6 +48,21 @@ local Notification = InputContainer:new{
     toast = true, -- closed on any event, and let the event propagate to next top widget
 
     _nums_shown = {}, -- array of stacked notifications
+
+    SOURCE_BOTTOM_MENU_ICON = SOURCE_BOTTOM_MENU_ICON,
+    SOURCE_BOTTOM_MENU_TOGGLE = SOURCE_BOTTOM_MENU_TOGGLE,
+    SOURCE_BOTTOM_MENU_FINE = SOURCE_BOTTOM_MENU_FINE,
+    SOURCE_BOTTOM_MENU_MORE = SOURCE_BOTTOM_MENU_MORE,
+    SOURCE_BOTTOM_MENU_PROGRESS = SOURCE_BOTTOM_MENU_PROGRESS,
+    SOURCE_DISPATCHER = SOURCE_DISPATCHER,
+    SOURCE_OTHER = SOURCE_OTHER,
+
+    SOURCE_BOTTOM_MENU = SOURCE_BOTTOM_MENU,
+
+    SOURCE_NONE = 0,
+    SOURCE_SOME = SOURCE_SOME,
+    SOURCE_DEFAULT = SOURCE_DEFAULT,
+    SOURCE_ALL = SOURCE_ALL,
 }
 
 function Notification:init()
@@ -93,6 +128,33 @@ function Notification:init()
     }
 end
 
+function Notification:setNotifySource(source)
+    self.notify_source = source
+end
+
+function Notification:resetNotifySource()
+    self.notify_source = Notification.SOURCE_OTHER
+end
+
+function Notification:getNotifySource()
+    return self.notify_source
+end
+
+-- show popups if `self.notify_source` is not masked by the setting `notification_sources_to_show_mask`
+function Notification:notify(arg, refresh_after)
+    local mask = G_reader_settings:readSetting("notification_sources_to_show_mask") or self.SOURCE_DEFAULT
+    if self.notify_source and band(mask, self.notify_source) ~= 0 then
+        UIManager:show(Notification:new{
+            text = arg,
+         })
+        if refresh_after then
+            UIManager:forceRePaint()
+        end
+        return true
+    end
+    return false
+end
+
 function Notification:_cleanShownStack(num)
     -- Clean stack of shown notifications
     if num then

frontend/ui/widget/toggleswitch.lua

@@ -15,6 +15,7 @@ local GestureRange = require("ui/gesturerange")
 local HorizontalGroup = require("ui/widget/horizontalgroup")
 local InputContainer = require("ui/widget/container/inputcontainer")
 local FrameContainer = require("ui/widget/container/framecontainer")
+local Notification = require("ui/widget/notification")
 local Size = require("ui/size")
 local TextWidget = require("ui/widget/textwidget")
 local UIManager = require("ui/uimanager")
@@ -217,11 +218,21 @@ function ToggleSwitch:onTapSelect(arg, gev)
         self.callback(self.position)
     end
     if self.toggle[self.position] ~= "⋮" then
+        if #self.values == 0 then -- this is a toggle which is not selectable (eg. increase, decrease)
+            Notification:setNotifySource(Notification.SOURCE_BOTTOM_MENU_FINE)
+        else
+            Notification:setNotifySource(Notification.SOURCE_BOTTOM_MENU_TOGGLE)
+        end
         self.config:onConfigChoose(self.values, self.name,
             self.event, self.args, self.events, self.position, self.hide_on_apply)
+
         UIManager:setDirty(self.config, function()
             return "ui", self.dimen
         end)
+
+        UIManager:tickAfterNext(function()
+            Notification:setNotifySource(Notification.SOURCE_OTHER) -- only allow events, if they are activated
+        end)
     end
     return true
 end