diff --git a/frontend/apps/reader/modules/readerfrontlight.lua b/frontend/apps/reader/modules/readerfrontlight.lua
index 18ba3d6f8..5f83fcb64 100644
--- a/frontend/apps/reader/modules/readerfrontlight.lua
+++ b/frontend/apps/reader/modules/readerfrontlight.lua
@@ -10,6 +10,7 @@ local _ = require("gettext")
 
 local ReaderFrontLight = InputContainer:new{
     steps = {0,1,1,1,1,2,2,2,3,4,5,6,7,8,9,10},
+    steps_fl = { 0.1, 0.1, 0.2, 0.4, 0.7, 1.1, 1.6, 2.2, 2.9, 3.7, 4.6, 5.6, 6.7, 7.9, 9.2, 10.6, },
     gestureScale = Screen:getWidth() * FRONTLIGHT_SENSITIVITY_DECREASE,
 }
 
@@ -64,22 +65,153 @@ function ReaderFrontLight:onAdjust(arg, ges)
     return true
 end
 
+-- direction +1 - increase frontlight
+-- direction -1 - decrease frontlight
+function ReaderFrontLight:onChangeFlIntensity(ges, direction)
+    local powerd = Device:getPowerDevice()
+    local gestureScale
+    if ges.direction == "south" or ges.direction == "north" then
+        gestureScale = Screen:getHeight() * 7/8 * 0.8
+    elseif ges.direction == "west" or ges.direction == "east" then
+        gestureScale = Screen:getWidth() * 7/8 * 0.8
+    else
+        local width = Screen:getWidth()
+        local height = Screen:getHeight()
+        -- diagonal
+        gestureScale = math.sqrt(width * width + height * height) * 7/8 * 0.8
+    end
+    if powerd.fl_intensity == nil then return false end
+
+    local steps_tbl = {}
+    local scale = (powerd.fl_max - powerd.fl_min) / 2 / 10.6
+    for i = 1, #self.steps_fl, 1
+    do
+        steps_tbl[i] = math.ceil(self.steps_fl[i] * scale)
+    end
+
+    if ges.distance == nil then
+        ges.distance = 1
+    end
+    local step = math.ceil(#steps_tbl * ges.distance / gestureScale)
+    local delta_int = steps_tbl[step] or steps_tbl[#steps_tbl]
+    if direction ~= -1 and direction ~= 1 then
+        -- set default value (increase frontlight)
+        direction = 1
+    end
+    local new_intensity = powerd.fl_intensity + direction * delta_int
+
+    if new_intensity == nil then return true end
+    -- when new_intensity <=0, toggle light off
+    if new_intensity <= 0 then
+        powerd:turnOffFrontlight()
+    else
+        powerd:setIntensity(new_intensity)
+    end
+    self:onShowIntensity()
+    if self.view and self.view.footer_visible and self.view.footer.settings.frontlight then
+        self.view.footer:updateFooter()
+    end
+    return true
+end
+
+-- direction +1 - increase frontlight warmth
+-- direction -1 - decrease frontlight warmth
+function ReaderFrontLight:onChangeFlWarmth(ges, direction)
+    local powerd = Device:getPowerDevice()
+    if powerd.fl_warmth == nil then return false end
+
+    if powerd.auto_warmth then
+        UIManager:show(Notification:new{
+            text = _("Warmth is handled automatically."),
+            timeout = 1.0,
+        })
+        return true
+    end
+
+    local gestureScale
+    if ges.direction == "south" or ges.direction == "north" then
+        gestureScale = Screen:getHeight() * 7/8 * 0.8
+    elseif ges.direction == "west" or ges.direction == "east" then
+        gestureScale = Screen:getWidth() * 7/8 * 0.8
+    else
+        local width = Screen:getWidth()
+        local height = Screen:getHeight()
+        -- diagonal
+        gestureScale = math.sqrt(width * width + height * height) * 7/8 * 0.8
+    end
+
+    local steps_tbl = {}
+    local scale = (powerd.fl_max - powerd.fl_min) / 2 / 10.6
+    for i = 1, #self.steps_fl, 1
+    do
+        steps_tbl[i] = math.ceil(self.steps_fl[i] * scale)
+    end
+
+    if ges.distance == nil then
+        ges.distance = 1
+    end
+
+    local step = math.ceil(#steps_tbl * ges.distance / gestureScale)
+    local delta_int = steps_tbl[step] or steps_tbl[#steps_tbl]
+    local warmth
+    if direction ~= -1 and direction ~= 1 then
+        -- set default value (increase frontlight)
+        direction = 1
+    end
+    warmth = powerd.fl_warmth + direction * delta_int
+    if warmth > 100 then
+        warmth = 100
+    elseif warmth < 0 then
+        warmth = 0
+    end
+    powerd:setWarmth(warmth)
+    self:onShowWarmth()
+    return true
+end
+
+
+function ReaderFrontLight:onShowOnOff()
+    local powerd = Device:getPowerDevice()
+    local new_text
+    if powerd.is_fl_on then
+        new_text = _("Frontlight enabled.")
+    else
+        new_text = _("Frontlight disabled.")
+    end
+    UIManager:show(Notification:new{
+        text = new_text,
+        timeout = 1.0,
+    })
+    return true
+end
+
 function ReaderFrontLight:onShowIntensity()
     if not Device:hasFrontlight() then return true end
     local powerd = Device:getPowerDevice()
     local new_text
     if powerd:isFrontlightOff() then
-        new_text = _("Frontlight is off.")
+        new_text = _("Frontlight disabled.")
     else
         new_text = T(_("Frontlight intensity is set to %1."), powerd:frontlightIntensity())
     end
     UIManager:show(Notification:new{
         text = new_text,
-        timeout = 2,
+        timeout = 1,
     })
     return true
 end
 
+function ReaderFrontLight:onShowWarmth(value)
+    local powerd = Device:getPowerDevice()
+    if powerd.fl_warmth ~= nil then
+        UIManager:show(Notification:new{
+            text = T(_("Warmth set to %1."), powerd.fl_warmth),
+            timeout = 1.0,
+        })
+    end
+    return true
+end
+
 function ReaderFrontLight:onSwipe(arg, ges)
     if ges.direction == "north" or ges.direction == "south" then
         logger.dbg("onSwipe activated")
diff --git a/frontend/apps/reader/modules/readergesture.lua b/frontend/apps/reader/modules/readergesture.lua
index d12e2e767..2a0913b11 100644
--- a/frontend/apps/reader/modules/readergesture.lua
+++ b/frontend/apps/reader/modules/readergesture.lua
@@ -61,6 +61,10 @@ local action_strings = {
     show_config_menu = _("Show bottom menu"),
     show_frontlight_dialog = _("Show frontlight dialog"),
     toggle_frontlight = _("Toggle frontlight"),
+    increase_frontlight = _("Increase frontlight brightness"),
+    decrease_frontlight = _("Decrease frontlight brightness"),
+    increase_frontlight_warmth = _("Increase frontlight warmth"),
+    decrease_frontlight_warmth = _("Decrease frontlight warmth"),
     toggle_gsensor = _("Toggle accelerometer"),
     toggle_rotation = _("Toggle rotation"),
 
@@ -157,6 +161,10 @@ function ReaderGesture:init()
         hold_top_right_corner = "ignore",
         hold_bottom_left_corner = "ignore",
         hold_bottom_right_corner = "ignore",
+        one_finger_swipe_left_edge_down = Device:hasFrontlight() and "decrease_frontlight" or "ignore",
+        one_finger_swipe_left_edge_up = Device:hasFrontlight() and "increase_frontlight" or "ignore",
+        one_finger_swipe_right_edge_down =  Device:hasNaturalLight() and "decrease_frontlight_warmth" or "ignore",
+        one_finger_swipe_right_edge_up = Device:hasNaturalLight() and "increase_frontlight_warmth" or "ignore",
         two_finger_tap_top_left_corner = "ignore",
         two_finger_tap_top_right_corner = "ignore",
         two_finger_tap_bottom_left_corner = "ignore",
@@ -357,6 +365,28 @@ function ReaderGesture:addToMainMenu(menu_items)
                 text = _("Short diagonal swipe"),
                 sub_item_table = self:buildMenu("short_diagonal_swipe", self.default_gesture["short_diagonal_swipe"]),
             },
+            {
+                text = _("One-finger swipe"),
+                sub_item_table = {
+                    {
+                        text_func = function() return actionTextFunc("one_finger_swipe_left_edge_down", _("Left edge down")) end,
+                        sub_item_table = self:buildMenu("one_finger_swipe_left_edge_down", self.default_gesture["one_finger_swipe_left_edge_down"]),
+                    },
+                    {
+                        text_func = function() return actionTextFunc("one_finger_swipe_left_edge_up", _("Left edge up")) end,
+                        sub_item_table = self:buildMenu("one_finger_swipe_left_edge_up", self.default_gesture["one_finger_swipe_left_edge_up"]),
+                    },
+                    {
+                        text_func = function() return actionTextFunc("one_finger_swipe_right_edge_down", _("Right edge down")) end,
+                        sub_item_table = self:buildMenu("one_finger_swipe_right_edge_down", self.default_gesture["one_finger_swipe_right_edge_down"]),
+                    },
+                    {
+                        text_func = function() return actionTextFunc("one_finger_swipe_right_edge_up", _("Right edge up")) end,
+                        sub_item_table = self:buildMenu("one_finger_swipe_right_edge_up", self.default_gesture["one_finger_swipe_right_edge_up"]),
+                    },
+                },
+            },
+
         },
     }
     menu_items.gesture_intervals = {
@@ -610,7 +640,12 @@ function ReaderGesture:buildMenu(ges, default)
         {"show_menu", true},
         {"show_config_menu", not self.is_docless, true},
         {"show_frontlight_dialog", Device:hasFrontlight()},
-        {"toggle_frontlight", Device:hasFrontlight(), true},
+        {"toggle_frontlight", Device:hasFrontlight()},
+        {"increase_frontlight", Device:hasFrontlight()},
+        {"decrease_frontlight", Device:hasFrontlight(), true},
+        {"increase_frontlight_warmth", Device:hasNaturalLight()},
+        {"decrease_frontlight_warmth", Device:hasNaturalLight(), true},
+
         {"toggle_gsensor", Device:canToggleGSensor()},
         {"toggle_rotation", not self.is_docless, true},
 
@@ -792,6 +827,15 @@ function ReaderGesture:setupGesture(ges, action)
         ratio_w = 1, ratio_h = 1,
     }
 
+    local zone_left_edge = {
+        ratio_x = 0, ratio_y = 1/8,
+        ratio_w = 1/8, ratio_h = 7/8,
+    }
+    local zone_right_edge = {
+        ratio_x = 7/8, ratio_y = 1/8,
+        ratio_w = 1/8, ratio_h = 7/8,
+    }
+
     -- legacy global variable DTAP_ZONE_FLIPPING may still be defined in default.persistent.lua
     local dtap_zone_top_left = DTAP_ZONE_FLIPPING and DTAP_ZONE_FLIPPING or DTAP_ZONE_TOP_LEFT
     local zone_top_left_corner = {
@@ -823,6 +867,9 @@ function ReaderGesture:setupGesture(ges, action)
 
     local overrides_tap_corner
     local overrides_hold_corner
+    local overrides_vertical_edge
+    local overrides_pan, overrides_pan_release
+    local overrides_swipe_pan, overrides_swipe_pan_release
     if self.is_docless then
         overrides_tap_corner = {
             "filemanager_tap",
@@ -838,6 +885,17 @@ function ReaderGesture:setupGesture(ges, action)
         overrides_hold_corner = {
             "readerfooter_hold",
         }
+        overrides_vertical_edge = {
+            "paging_swipe",
+            "rolling_swipe",
+        }
+        overrides_pan = {
+            "paging_swipe",
+            "rolling_swipe",
+        }
+        overrides_pan_release = {
+            "paging_pan_release",
+        }
     end
 
     if ges == "multiswipe" then
@@ -881,6 +939,34 @@ function ReaderGesture:setupGesture(ges, action)
         ges_type = "hold"
         zone = zone_bottom_left_corner
         overrides = overrides_hold_corner
+    elseif ges == "one_finger_swipe_left_edge_down" then
+        ges_type = "swipe"
+        zone = zone_left_edge
+        direction = {south = true}
+        overrides = overrides_vertical_edge
+        overrides_swipe_pan = overrides_pan
+        overrides_swipe_pan_release = overrides_pan_release
+    elseif ges == "one_finger_swipe_left_edge_up" then
+        ges_type = "swipe"
+        zone = zone_left_edge
+        direction = {north = true}
+        overrides = overrides_vertical_edge
+        overrides_swipe_pan = overrides_pan
+        overrides_swipe_pan_release = overrides_pan_release
+    elseif ges == "one_finger_swipe_right_edge_down" then
+        ges_type = "swipe"
+        zone = zone_right_edge
+        direction = {south = true}
+        overrides = overrides_vertical_edge
+        overrides_swipe_pan = overrides_pan
+        overrides_swipe_pan_release = overrides_pan_release
+    elseif ges == "one_finger_swipe_right_edge_up" then
+        ges_type = "swipe"
+        zone = zone_right_edge
+        direction = {north = true}
+        overrides = overrides_vertical_edge
+        overrides_swipe_pan = overrides_pan
+        overrides_swipe_pan_release = overrides_pan_release
     elseif ges == "two_finger_tap_top_left_corner" then
         ges_type = "two_finger_tap"
         zone = zone_top_left_corner
@@ -939,6 +1025,13 @@ function ReaderGesture:setupGesture(ges, action)
     else return
     end
     self:registerGesture(ges, action, ges_type, zone, overrides, direction, distance)
+    -- make dummy zone to disable panning and panning_release when gesture is swipe
+    if ges_type == "swipe" and ges ~= "short_diagonal_swipe" then
+        local pan_gesture = ges.."_pan"
+        local pan_release_gesture = ges.."_pan_release"
+        self:registerGesture(pan_gesture, "", "pan", zone, overrides_swipe_pan, direction, distance)
+        self:registerGesture(pan_release_gesture, "", "pan_release", zone, overrides_swipe_pan_release, direction, distance)
+    end
 end
 
 function ReaderGesture:registerGesture(ges, action, ges_type, zone, overrides, direction, distance)
@@ -1081,6 +1174,34 @@ function ReaderGesture:gestureAction(action, ges)
         else
             self.ui:handleEvent(Event:new("ShowFlDialog"))
         end
+    elseif action == "increase_frontlight" then
+        if self.ges_mode == "gesture_fm" then
+            local ReaderFrontLight = require("apps/reader/modules/readerfrontlight")
+            ReaderFrontLight:onChangeFlIntensity(ges, 1)
+        else
+            self.ui:handleEvent(Event:new("ChangeFlIntensity", ges, 1))
+        end
+    elseif action == "decrease_frontlight" then
+        if self.ges_mode == "gesture_fm" then
+            local ReaderFrontLight = require("apps/reader/modules/readerfrontlight")
+            ReaderFrontLight:onChangeFlIntensity(ges, -1)
+        else
+            self.ui:handleEvent(Event:new("ChangeFlIntensity", ges, -1))
+        end
+    elseif action == "increase_frontlight_warmth" then
+        if self.ges_mode == "gesture_fm" then
+            local ReaderFrontLight = require("apps/reader/modules/readerfrontlight")
+            ReaderFrontLight:onChangeFlWarmth(ges, 1)
+        else
+            self.ui:handleEvent(Event:new("ChangeFlWarmth", ges, 1))
+        end
+    elseif action == "decrease_frontlight_warmth" then
+        if self.ges_mode == "gesture_fm" then
+            local ReaderFrontLight = require("apps/reader/modules/readerfrontlight")
+            ReaderFrontLight:onChangeFlWarmth(ges, -1)
+        else
+            self.ui:handleEvent(Event:new("ChangeFlWarmth", ges, -1))
+        end
     elseif action == "toggle_bookmark" then
         self.ui:handleEvent(Event:new("ToggleBookmark"))
     elseif action == "toggle_frontlight" then
diff --git a/frontend/pluginloader.lua b/frontend/pluginloader.lua
index 5917b022f..a3610a36f 100644
--- a/frontend/pluginloader.lua
+++ b/frontend/pluginloader.lua
@@ -3,7 +3,8 @@ local logger = require("logger")
 
 local DEFAULT_PLUGIN_PATH = "plugins"
 local OBSOLETE_PLUGINS = {
-    storagestat = true
+    storagestat = true,
+    kobolight = true,
 }
 
 local function sandboxPluginEventHandlers(plugin)
diff --git a/frontend/ui/elements/filemanager_menu_order.lua b/frontend/ui/elements/filemanager_menu_order.lua
index 288278cfb..9847439d6 100644
--- a/frontend/ui/elements/filemanager_menu_order.lua
+++ b/frontend/ui/elements/filemanager_menu_order.lua
@@ -77,7 +77,6 @@ local order = {
     },
     taps_and_gestures = {
         "gesture_manager",
-        "frontlight_gesture_controller",
         "gesture_intervals",
         "----------------------------",
         "menu_activate",
diff --git a/frontend/ui/elements/reader_menu_order.lua b/frontend/ui/elements/reader_menu_order.lua
index afd1622e8..bd0208fd2 100644
--- a/frontend/ui/elements/reader_menu_order.lua
+++ b/frontend/ui/elements/reader_menu_order.lua
@@ -96,7 +96,6 @@ local order = {
     },
     taps_and_gestures = {
         "gesture_manager",
-        "frontlight_gesture_controller",
         "gesture_intervals",
         "----------------------------",
         "follow_links",
diff --git a/plugins/kobolight.koplugin/_meta.lua b/plugins/kobolight.koplugin/_meta.lua
deleted file mode 100644
index a2f2e9ddc..000000000
--- a/plugins/kobolight.koplugin/_meta.lua
+++ /dev/null
@@ -1,6 +0,0 @@
-local _ = require("gettext")
-return {
-    name = 'kobolight',
-    fullname = _("Frontlight gesture controller"),
-    description = _([[Controls the frontlight with gestures on the left border of screen.]]),
-}
diff --git a/plugins/kobolight.koplugin/demo.png b/plugins/kobolight.koplugin/demo.png
deleted file mode 100644
index 0fee3e861..000000000
Binary files a/plugins/kobolight.koplugin/demo.png and /dev/null differ
diff --git a/plugins/kobolight.koplugin/demo_ka1.png b/plugins/kobolight.koplugin/demo_ka1.png
deleted file mode 100644
index 142d6854f..000000000
Binary files a/plugins/kobolight.koplugin/demo_ka1.png and /dev/null differ
diff --git a/plugins/kobolight.koplugin/main.lua b/plugins/kobolight.koplugin/main.lua
deleted file mode 100644
index a8b665619..000000000
--- a/plugins/kobolight.koplugin/main.lua
+++ /dev/null
@@ -1,271 +0,0 @@
-local Device = require("device")
-
-local with_frontlight = (Device:isCervantes() or Device:isKindle() or Device:isKobo()) and Device:hasFrontlight()
-local with_natural_light = Device:hasNaturalLight()
-if not (with_frontlight or Device:isSDL()) then
-    return { disabled = true, }
-end
-
-local ConfirmBox = require("ui/widget/confirmbox")
-local ImageWidget = require("ui/widget/imagewidget")
-local InfoMessage = require("ui/widget/infomessage")
-local Notification = require("ui/widget/notification")
-local Screen = require("device").screen
-local UIManager = require("ui/uimanager")
-local WidgetContainer = require("ui/widget/container/widgetcontainer")
-local T = require("ffi/util").template
-local _ = require("gettext")
-
-local swipe_touch_zone_ratio = { x = 0, y = 1/8, w = 1/10, h = 7/8, }
-local swipe_touch_zone_ratio_warmth = { x = 7/8, y = 1/8, w = 1/8, h = 7/8, }
-
-local KoboLight = WidgetContainer:new{
-    name = 'kobolight',
-    gestureScale = nil,  -- initialized in self:resetLayout()
-}
-
-function KoboLight:init()
-    local powerd = Device:getPowerDevice()
-    local scale = (powerd.fl_max - powerd.fl_min) / 2 / 10.6
-    self.steps = { 0.1, 0.1, 0.2, 0.4, 0.7, 1.1, 1.6, 2.2, 2.9, 3.7, 4.6, 5.6, 6.7, 7.9, 9.2, 10.6, }
-    for i = 1, #self.steps, 1
-    do
-        self.steps[i] = math.ceil(self.steps[i] * scale)
-    end
-
-    self.ui.menu:registerToMainMenu(self)
-end
-
-function KoboLight:onReaderReady()
-    self:setupTouchZones()
-    self:resetLayout()
-end
-
-function KoboLight:disabled()
-    return G_reader_settings:isTrue("disable_kobolight")
-end
-
-function KoboLight:setupTouchZones()
-    if not Device:isTouchDevice() then return end
-    if self:disabled() then return end
-    local swipe_zone = {
-        ratio_x = swipe_touch_zone_ratio.x, ratio_y = swipe_touch_zone_ratio.y,
-        ratio_w = swipe_touch_zone_ratio.w, ratio_h = swipe_touch_zone_ratio.h,
-    }
-    local swipe_zone_warmth = {
-        ratio_x = swipe_touch_zone_ratio_warmth.x,
-        ratio_y = swipe_touch_zone_ratio_warmth.y,
-        ratio_w = swipe_touch_zone_ratio_warmth.w,
-        ratio_h = swipe_touch_zone_ratio_warmth.h,
-    }
-    self.ui:registerTouchZones({
-        {
-            id = "plugin_kobolight_swipe",
-            ges = "swipe",
-            screen_zone = swipe_zone,
-            handler = function(ges) return self:onSwipe(nil, ges) end,
-            overrides = {
-                "paging_swipe",
-                "rolling_swipe",
-            },
-        },
-        {
-            -- dummy zone to disable reader panning
-            id = "plugin_kobolight_pan",
-            ges = "pan",
-            screen_zone = swipe_zone,
-            handler = function(ges) return true end,
-            overrides = {
-                "paging_pan",
-                "rolling_pan",
-            },
-        },
-        {
-            -- dummy zone to disable reader panning
-            id = "plugin_kobolight_pan_release",
-            ges = "pan_release",
-            screen_zone = swipe_zone,
-            handler = function(ges) return true end,
-            overrides = {
-                "paging_pan_release",
-            },
-        },
-    })
-    if with_natural_light then
-        self.ui:registerTouchZones({
-        {
-            id = "plugin_kobolight_swipe_warmth",
-            ges = "swipe",
-            screen_zone = swipe_zone_warmth,
-            handler = function(ges) return self:onSwipeWarmth(nil, ges) end,
-            overrides = {
-                "paging_swipe",
-                "rolling_swipe",
-            },
-        },
-        {
-            -- dummy zone to disable reader panning
-            id = "plugin_kobolight_pan_warmth",
-            ges = "pan",
-            screen_zone = swipe_zone_warmth,
-            handler = function(ges) return true end,
-            overrides = {
-                "paging_pan",
-                "rolling_pan",
-            },
-        },
-        {
-            -- dummy zone to disable reader panning
-            id = "plugin_kobolight_pan_release_warmth",
-            ges = "pan_release",
-            screen_zone = swipe_zone_warmth,
-            handler = function(ges) return true end,
-            overrides = {
-                "paging_pan_release",
-            },
-        },
-        })
-    end
-end
-
-function KoboLight:resetLayout()
-    local new_screen_height = Screen:getHeight()
-    self.gestureScale = new_screen_height * swipe_touch_zone_ratio.h * 0.8
-end
-
-function KoboLight:onShowIntensity()
-    local powerd = Device:getPowerDevice()
-    if powerd.fl_intensity ~= nil then
-        UIManager:show(Notification:new{
-            text = T(_("Frontlight intensity is set to %1."), powerd.fl_intensity),
-            timeout = 1.0,
-        })
-    end
-    return true
-end
-
-function KoboLight:onShowWarmth(value)
-    local powerd = Device:getPowerDevice()
-    if powerd.fl_warmth ~= nil then
-        UIManager:show(Notification:new{
-            text = T(_("Warmth is set to %1."), powerd.fl_warmth),
-            timeout = 1.0,
-        })
-    end
-    return true
-end
-
-function KoboLight:onShowOnOff()
-    local powerd = Device:getPowerDevice()
-    local new_text
-    if powerd.is_fl_on then
-        new_text = _("Frontlight is on.")
-    else
-        new_text = _("Frontlight is off.")
-    end
-    UIManager:show(Notification:new{
-        text = new_text,
-        timeout = 1.0,
-    })
-    return true
-end
-
-function KoboLight:onSwipe(_, ges)
-    local powerd = Device:getPowerDevice()
-    if powerd.fl_intensity == nil then return false end
-
-    local step = math.ceil(#self.steps * ges.distance / self.gestureScale)
-    local delta_int = self.steps[step] or self.steps[#self.steps]
-    local new_intensity
-    if ges.direction == "north" then
-        new_intensity = powerd.fl_intensity + delta_int
-    elseif ges.direction == "south" then
-        new_intensity = powerd.fl_intensity - delta_int
-    else
-        return false  -- don't consume swipe event if it's not matched
-    end
-
-    -- when new_intensity <= 0, toggle light off
-    if new_intensity <= 0 then
-        if powerd.is_fl_on then
-            powerd:toggleFrontlight()
-        end
-        self:onShowOnOff()
-    else -- general case
-        powerd:setIntensity(new_intensity)
-        self:onShowIntensity()
-    end
-    return true
-end
-
-function KoboLight:onSwipeWarmth(ignored, ges)
-    local powerd = Device:getPowerDevice()
-    if powerd.fl_warmth == nil then return false end
-
-    if powerd.auto_warmth then
-        UIManager:show(Notification:new{
-            text = _("Warmth is handled automatically."),
-            timeout = 1.0,
-        })
-        return true
-    end
-
-    local step = math.ceil(#self.steps * ges.distance / self.gestureScale)
-    local delta_int = self.steps[step] or self.steps[#self.steps]
-    local warmth
-    if ges.direction == "north" then
-        warmth = math.min(powerd.fl_warmth + delta_int, 100)
-    elseif ges.direction == "south" then
-        warmth = math.max(powerd.fl_warmth - delta_int, 0)
-    else
-        return false  -- don't consume swipe event if it's not matched
-    end
-
-    powerd:setWarmth(warmth)
-    self:onShowWarmth()
-    return true
-end
-
-function KoboLight:addToMainMenu(menu_items)
-    menu_items.frontlight_gesture_controller = {
-        text = _("Frontlight gesture controller"),
-        keep_menu_open = true,
-        callback = function()
-            local image_name
-            local nl_text = ""
-            if with_natural_light then
-                image_name = "/demo_ka1.png"
-                nl_text = _("\n- Change frontlight warmth by swiping up or down on the right of the screen.")
-            else
-                image_name = "/demo.png"
-            end
-            local image = ImageWidget:new{
-                file = self.path .. image_name,
-                height = Screen:getHeight(),
-                width = Screen:getWidth(),
-                scale_factor = 0,
-            }
-            UIManager:show(image)
-            UIManager:show(ConfirmBox:new{
-                text = _("Frontlight gesture controller can:\n- Turn on or off frontlight by tapping bottom left of the screen.\n- Change frontlight intensity by swiping up or down on the left of the screen.") .. nl_text .. "\n\n" ..
-                         (self:disabled() and _("Do you want to enable the frontlight gesture controller?") or _("Do you want to disable the frontlight gesture controller?")),
-                ok_text = self:disabled() and _("Enable") or _("Disable"),
-                ok_callback = function()
-                    UIManager:close(image, "full")
-                    UIManager:show(InfoMessage:new{
-                        text = T(_("You have %1 the frontlight gesture controller. It will take effect on next restart."),
-                                 self:disabled() and _("enabled") or _("disabled"))
-                    })
-                    G_reader_settings:flipTrue("disable_kobolight")
-                end,
-                cancel_text = _("Close"),
-                cancel_callback = function()
-                    UIManager:close(image, "full")
-                end,
-            })
-            UIManager:setDirty("all", "full")
-        end,
-    }
-end
-
-return KoboLight