From f3bcbd3b4eeb1fea9d19e62309db87a78d2ff039 Mon Sep 17 00:00:00 2001
From: chrox <chrox.huang@gmail.com>
Date: Mon, 22 Jul 2013 22:09:14 +0800
Subject: [PATCH] use regional update when displaying dict windows

---
 frontend/ui/widget/dict.lua | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/frontend/ui/widget/dict.lua b/frontend/ui/widget/dict.lua
index c939177bb..c2b4ec869 100644
--- a/frontend/ui/widget/dict.lua
+++ b/frontend/ui/widget/dict.lua
@@ -154,6 +154,7 @@ function DictQuickLookup:update()
 		dimen = Screen:getSize(),
 		self.dict_frame,
 	}
+	UIManager.repaint_all = true
 end
 
 function DictQuickLookup:isPrevDictAvaiable()
@@ -177,8 +178,15 @@ function DictQuickLookup:changeDictionary(index)
 	self.dictionary = self.results[index].dict
 	self.lookupword = self.results[index].word
 	self.definition = self.results[index].definition
+	
+	local orig_dimen = self.dict_frame and self.dict_frame.dimen or Geom:new{}
 	self:update()
-	UIManager.repaint_all = true
+
+	UIManager.update_region_func = function()
+		local update_region = self.dict_frame.dimen:combine(orig_dimen)
+		DEBUG("update region", update_region)
+		return update_region
+	end
 end
 
 function DictQuickLookup:changeToDefaultDict()