From 127e053d5b5b57d5e392d5be6e4c6483b06b3112 Mon Sep 17 00:00:00 2001
From: chrox <chrox.huang@gmail.com>
Date: Mon, 9 Dec 2013 11:13:51 +0800
Subject: [PATCH] add PAN_THRESHOLD when detecting hold_pan gesture This should
 fix #383.

---
 frontend/ui/gesturedetector.lua | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/frontend/ui/gesturedetector.lua b/frontend/ui/gesturedetector.lua
index 973e6d40f..c9fad7cc1 100644
--- a/frontend/ui/gesturedetector.lua
+++ b/frontend/ui/gesturedetector.lua
@@ -559,7 +559,8 @@ function GestureDetector:holdState(tev, hold)
 			},
 			time = tev.timev,
 		}
-	else
+	elseif (tev.x and math.abs(tev.x - self.first_tevs[slot].x) >= self.PAN_THRESHOLD) or
+		(tev.y and math.abs(tev.y - self.first_tevs[slot].y) >= self.PAN_THRESHOLD) then
 		local ges_ev = self:handlePan(tev)
 		if ges_ev ~= nil then ges_ev.ges = "hold_pan" end
 		return ges_ev