Fullscreen android - resize window after toggle fullscreen (#3392)

frontend/ui/elements/screen_fullscreen_menu_table.lua

@@ -1,6 +1,8 @@
 local isAndroid, android = pcall(require, "android")
+local Geom = require("ui/geometry")
 local logger = require("logger")
 local _ = require("gettext")
+local Screen = require("device").screen
 
 if not isAndroid then return end
 
@@ -24,6 +26,10 @@ return {
         local screen_height = android.getScreenHeight()
         logger.dbg("screen_fullscreen_menu_table.lua: Screen height: ", screen_height)
 
+        local new_height = screen_height - status_bar_height
+        local viewport = Geom:new{x=0, y=status_bar_height, w=screen_width, h=new_height}
+        Screen:setViewport(viewport)
+
         G_reader_settings:saveSetting("disabled_fullscreen", enabled_fullscreen)
     end,
 }