Dispatcher/DeviceListener: temporarily turn on Accelerometer/GSensor for 5 sec (#12419)

frontend/device/devicelistener.lua

@@ -207,6 +207,21 @@ if Device:hasGSensor() then
         return true
     end
 
+    function DeviceListener:onTempGSensorOn()
+        local new_text
+        if G_reader_settings:nilOrFalse("input_ignore_gsensor") then
+            new_text = _("Accelerometer rotation events already on.")
+        else
+            Device:toggleGSensor(true)
+            new_text = _("Accelerometer rotation events on for 5 seconds.")
+            UIManager:scheduleIn(5.0, function()
+                Device:toggleGSensor(false)
+            end)
+        end
+        Notification:notify(new_text)
+        return true
+    end
+
     function DeviceListener:onLockGSensor()
         G_reader_settings:flipNilOrFalse("input_lock_gsensor")
         Device:lockGSensor(G_reader_settings:isTrue("input_lock_gsensor"))

frontend/dispatcher.lua

@@ -84,6 +84,7 @@ local settingsList = {
     ----
     toggle_key_repeat = {category="none", event="ToggleKeyRepeat", title=_("Toggle key repeat"), device=true, condition=Device:hasKeys() and Device:canKeyRepeat(), separator=true},
     toggle_gsensor = {category="none", event="ToggleGSensor", title=_("Toggle accelerometer"), device=true, condition=Device:hasGSensor()},
+    temp_gsensor_on = {category="none", event="TempGSensorOn", title=_("Enable accelerometer for 5 seconds"), device=true, condition=Device:hasGSensor()},
     lock_gsensor = {category="none", event="LockGSensor", title=_("Lock auto rotation to current orientation"), device=true, condition=Device:hasGSensor()},
     toggle_rotation = {category="none", event="SwapRotation", title=_("Toggle orientation"), device=true},
     invert_rotation = {category="none", event="InvertRotation", title=_("Invert rotation"), device=true},
@@ -310,6 +311,7 @@ local dispatcher_menu_order = {
     ----
     "toggle_key_repeat",
     "toggle_gsensor",
+    "temp_gsensor_on",
     "lock_gsensor",
     "rotation_mode",
     "toggle_rotation",