ReaderGesture: cleanup (#6292)

convert all gesture actions to use events for better modularity
add network event handlers and device event handlers

frontend/apps/reader/modules/readerpaging.lua

@@ -5,7 +5,9 @@ local Geom = require("ui/geometry")
 local InputContainer = require("ui/widget/container/inputcontainer")
 local Math = require("optmath")
 local MultiConfirmBox = require("ui/widget/multiconfirmbox")
+local Notification = require("ui/widget/notification")
 local UIManager = require("ui/uimanager")
+local bit = require("bit")
 local logger = require("logger")
 local _ = require("gettext")
 local Screen = Device.screen
@@ -422,7 +424,7 @@ function ReaderPaging:onSwipe(_, ges)
         end
     else
         -- update footer (time & battery)
-        self.view.footer:updateFooter()
+        self.view.footer:onUpdateFooter()
         -- trigger full refresh
         UIManager:setDirty(nil, "full")
     end
@@ -977,7 +979,7 @@ function ReaderPaging:_gotoPage(number, orig_mode)
     if number == self.current_page or not number then
         -- update footer even if we stay on the same page (like when
         -- viewing the bottom part of a page from a top part view)
-        self.view.footer:updateFooter()
+        self.view.footer:onUpdateFooter()
         return true
     end
     if number > self.number_of_pages then
@@ -1031,4 +1033,26 @@ function ReaderPaging:onGotoPrevChapter()
     return true
 end
 
+function ReaderPaging:onToggleReflow()
+    self.view.document.configurable.text_wrap = bit.bxor(self.view.document.configurable.text_wrap, 1)
+    self.ui:handleEvent(Event:new("RedrawCurrentPage"))
+    self.ui:handleEvent(Event:new("RestoreZoomMode"))
+    self.ui:handleEvent(Event:new("InitScrollPageStates"))
+end
+
+-- Duplicated in ReaderRolling
+function ReaderPaging:onToggleReadingOrder()
+    self.inverse_reading_order = not self.inverse_reading_order
+    self:setupTouchZones()
+    local is_rtl = BD.mirroredUILayout()
+    if self.inverse_reading_order then
+        is_rtl = not is_rtl
+    end
+    UIManager:show(Notification:new{
+        text = is_rtl and _("RTL page turning.") or _("LTR page turning."),
+        timeout = 2.5,
+    })
+    return true
+end
+
 return ReaderPaging