fix bug in timer_callbacks scheduling & change variable name

watiEvent should stop checking timer_callbacks when execceds
wait timeout set by timeout_us.

frontend/ui/gesturedetector.lua

@@ -179,12 +179,12 @@ function GestureDetector:tapState(ev)
 		-- set current tap to last tap
 		self.last_tap = cur_tap
 
-		local dead_line = self.cur_ev.timev + TimeVal:new{
+		DEBUG("set up tap timer")
+		local deadline = self.cur_ev.timev + TimeVal:new{
 				sec = 0, usec = self.DOUBLE_TAP_INTERVAL,
 			}
-		DEBUG("set up tap timer")
 		Input:setTimeOut(function()
-			print("in tap timer", self.last_tap ~= nil)
+			DEBUG("in tap timer", self.last_tap ~= nil)
 			-- double tap will set last_tap to nil
 			-- so if it is not, then user must only
 			-- tapped once
@@ -193,7 +193,7 @@ function GestureDetector:tapState(ev)
 				-- we are using closure here
 				return ges_ev
 			end
-		end, dead_line)
+		end, deadline)
 		-- we are already at the end of touch event
 		-- so reset the state
 		self:clearState()
@@ -204,7 +204,7 @@ function GestureDetector:tapState(ev)
 		self.cur_x = ev.x
 		self.cur_y = ev.y
 		DEBUG("set up hold timer")
-		local dead_line = self.cur_ev.timev + TimeVal:new{
+		local deadline = self.cur_ev.timev + TimeVal:new{
 				sec = 0, usec = self.HOLD_INTERVAL
 			}
 		Input:setTimeOut(function()
@@ -213,7 +213,7 @@ function GestureDetector:tapState(ev)
 				-- timer set in tapState, so we switch to hold
 				return self:switchState("holdState")
 			end
-		end, dead_line)
+		end, deadline)
 	else
 		-- it is not end of touch event, see if we need to switch to
 		-- other states

frontend/ui/inputevent.lua

@@ -271,10 +271,10 @@ end
 function Input:setTimeOut(cb, tv_out)
 	local item = {
 		callback = cb, 
-		dead_line = tv_out,
+		deadline = tv_out,
 	}
 	for k,v in ipairs(self.timer_callbacks) do
-		if v.dead_line > tv_out then
+		if v.deadline > tv_out then
 			table.insert(self.timer_callbacks, k, item)
 			break
 		end
@@ -300,7 +300,7 @@ function Input:waitEvent(timeout_us, timeout_s)
 				local tv_now = TimeVal:now()
 				if ((not timeout_us and not timeout_s) or tv_now < wait_deadline) then
 					-- check whether timer is up
-					if tv_now >= self.timer_callbacks[1].dead_line then
+					if tv_now >= self.timer_callbacks[1].deadline then
 						local ges = self.timer_callbacks[1].callback()
 						table.remove(self.timer_callbacks, 1)
 						if ges then
@@ -308,13 +308,15 @@ function Input:waitEvent(timeout_us, timeout_s)
 							-- decided a gesture? FIXME
 							Input.timer_callbacks = {}
 							return Event:new("Gesture", ges)
-						end
-					end
-				end
-			end
+						end -- EOF if ges
+					end -- EOF if deadline reached
+				else
+					break
+				end -- EOF if not exceed wait timeout
+			end -- while #timer_callbacks > 0
 		else
 			ok, ev = pcall(input.waitForEvent, timeout_us)
-		end
+		end -- EOF if #timer_callbacks > 0
 		if ok then
 			break
 		end