From 1329f10fa544fcd63c1b13326d91c49884f37982 Mon Sep 17 00:00:00 2001
From: chrox <chrox.huang@gmail.com>
Date: Wed, 15 Jan 2014 23:34:37 +0800
Subject: [PATCH] add goto link function for CreDocument

---
 frontend/document/credocument.lua    | 19 +++++++++++++++++++
 frontend/ui/reader/readerrolling.lua | 28 ++++++++++++++++++++++++----
 2 files changed, 43 insertions(+), 4 deletions(-)

diff --git a/frontend/document/credocument.lua b/frontend/document/credocument.lua
index 84c050d20..688bcd10e 100644
--- a/frontend/document/credocument.lua
+++ b/frontend/document/credocument.lua
@@ -202,6 +202,10 @@ function CreDocument:getCurrentPos()
 	return self._document:getCurrentPos()
 end
 
+function CreDocument:getPageLinks()
+	return self._document:getPageLinks()
+end
+
 function Document:gotoPos(pos)
 	DEBUG("CreDocument: goto position", pos)
 	self._document:gotoPos(pos)
@@ -212,6 +216,21 @@ function CreDocument:gotoPage(page)
 	self._document:gotoPage(page)
 end
 
+function CreDocument:gotoLink(link)
+	DEBUG("CreDocument: goto link", link)
+	self._document:gotoLink(link)
+end
+
+function CreDocument:goBack()
+	DEBUG("CreDocument: go back")
+	self._document:goBack()
+end
+
+function CreDocument:goForward(link)
+	DEBUG("CreDocument: go forward")
+	self._document:goForward()
+end
+
 function CreDocument:getCurrentPage()
 	return self._document:getCurrentPage()
 end
diff --git a/frontend/ui/reader/readerrolling.lua b/frontend/ui/reader/readerrolling.lua
index c915dc213..67b716de1 100644
--- a/frontend/ui/reader/readerrolling.lua
+++ b/frontend/ui/reader/readerrolling.lua
@@ -183,10 +183,12 @@ function ReaderRolling:onTapBackward()
 end
 
 function ReaderRolling:onSwipe(arg, ges)
-	if ges.direction == "west" or ges.direction == "north" then
-		self:onGotoViewRel(1)
-	elseif ges.direction == "east" or ges.direction == "south" then
-		self:onGotoViewRel(-1)
+	if ges.direction == "west" then
+		self.ui.document:goForward()
+		self:onUpdateXPointer()
+	elseif ges.direction == "east" then
+		self.ui.document:goBack()
+		self:onUpdateXPointer()
 	end
 	return true
 end
@@ -204,11 +206,13 @@ end
 
 function ReaderRolling:onPosUpdate(new_pos)
 	self.current_pos = new_pos
+	self:updatePageLink()
 	self:updateBatteryState()
 end
 
 function ReaderRolling:onPageUpdate(new_page)
 	self.current_page = new_page
+	self:updatePageLink()
 	self:updateBatteryState()
 end
 
@@ -273,6 +277,16 @@ function ReaderRolling:updatePos()
 	UIManager.repaint_all = true
 end
 
+function ReaderRolling:onUpdateXPointer()
+	local xp = self.ui.document:getXPointer()
+	if self.view.view_mode == "page" then
+		self.ui:handleEvent(Event:new("PageUpdate", self.ui.document:getPageFromXPointer(xp)))
+	else
+		self.ui:handleEvent(Event:new("PosUpdate", self.ui.document:getPosFromXPointer(xp)))
+	end
+	return true
+end
+
 function ReaderRolling:onChangeViewMode()
 	self.ui.document:_readMetadata()
 	self.old_doc_height = self.ui.document.info.doc_height
@@ -347,6 +361,12 @@ function ReaderRolling:onGotoPage(number)
 	return true
 end
 
+function ReaderRolling:updatePageLink()
+	DEBUG("update page link")
+	local links = self.ui.document:getPageLinks()
+	self.view.links = links
+end
+
 function ReaderRolling:updateBatteryState()
 	DEBUG("update battery state")
 	if self.view.view_mode == "page" then