always show progress bar in flipping mode

tap on progress bar in flipping mode will goto corresponding page

frontend/ui/reader/readerpaging.lua

@@ -176,17 +176,37 @@ function ReaderPaging:onToggleFlipping()
 	self.view.flipping_visible = not self.view.flipping_visible
 	self.flipping_mode = self.view.flipping_visible
 	self.flipping_page = self.current_page
+	
 	if self.flipping_mode then
 		self:updateOriginalPage(self.current_page)
+		self:enterFlippingMode()
 	else
 		self:updateOriginalPage(nil)
+		self:exitFlippingMode()
 	end
+	self.view:resetLayout()
 	self.ui:handleEvent(Event:new("SetFlippingMode", self.flipping_mode))
 	self.ui:handleEvent(Event:new("SetHinting", not self.flipping_mode))
 	self.ui:handleEvent(Event:new("ReZoom"))
 	UIManager:setDirty(self.view.dialog, "partial")
 end
 
+function ReaderPaging:enterFlippingMode()
+	self.orig_reflow_mode = self.view.document.configurable.text_wrap
+	self.orig_footer_mode = self.view.footer_visible
+	self.orig_scroll_mode = self.view.page_scroll
+	
+	self.view.document.configurable.text_wrap = 0
+	self.view.page_scroll = false
+	self.view.footer_visible = true
+end
+
+function ReaderPaging:exitFlippingMode()
+	self.view.document.configurable.text_wrap = self.orig_reflow_mode
+	self.view.page_scroll = self.orig_scroll_mode
+	self.view.footer_visible = self.orig_footer_mode
+end
+
 function ReaderPaging:updateOriginalPage(page)
 	self.original_page = page
 end
@@ -675,4 +695,11 @@ function ReaderPaging:onGotoPage(number)
 	return true
 end
 
+function ReaderPaging:onGotoPercentage(percentage)
+	if percentage < 0 then percentage = 0 end
+	if percentage > 1 then percentage = 1 end
+	self:gotoPage(math.floor(percentage*self.number_of_pages))
+	return true
+end
+
 return ReaderPaging