Merge pull request #527 from koreader/Frontlight

UPDATE readerfrontlight.lua

frontend/ui/reader/readerfrontlight.lua

@@ -1,11 +1,12 @@
 local InputContainer = require("ui/widget/container/inputcontainer")
+local InputDialog = require("ui/widget/inputdialog")
+local Notification = require("ui/widget/notification")
+local GestureRange = require("ui/gesturerange")
+local UIManager = require("ui/uimanager")
 local Geom = require("ui/geometry")
 local Screen = require("ui/screen")
 local Device = require("ui/device")
-local GestureRange = require("ui/gesturerange")
-local InputDialog = require("ui/widget/inputdialog")
-local UIManager = require("ui/uimanager")
-local Notification = require("ui/widget/notification")
+local DEBUG = require("dbg")
 local _ = require("gettext")
 
 local ReaderFrontLight = InputContainer:new{
@@ -18,12 +19,17 @@ function ReaderFrontLight:init()
             Adjust = {
                 GestureRange:new{
                     ges = "two_finger_pan",
-					range = Geom:new{
-						x = 0, y = 0,
-						w = Screen:getWidth(),
-						h = Screen:getHeight(),
+                    rate = Device:getModel() == 'Kobo_phoenix' and nil or 3.0,
+                }
+            },
+            PanRelease= {
+                GestureRange:new{
+                    ges = "two_finger_pan_release",
+                }
             },
-					rate = 2.0,
+            Swipe = {
+                GestureRange:new{
+                    ges = "two_finger_swipe",
                 }
             },
         }
@@ -34,24 +40,37 @@ end
 function ReaderFrontLight:onAdjust(arg, ges)
     local powerd = Device:getPowerDevice()
     if powerd.flIntensity ~= nil then
+        DEBUG("frontlight intensity", powerd.flIntensity)
         local rel_proportion = ges.distance / Screen:getWidth()
         local delta_int = self.steps[math.ceil(#self.steps*rel_proportion)] or self.steps[#self.steps]
         local msg = nil
         if ges.direction == "north" then
-			msg = _("Increase front light intensity to ")
             powerd:setIntensity(powerd.flIntensity + delta_int)
         elseif ges.direction == "south" then
-			msg = _("Decrease front light intensity to ")
             powerd:setIntensity(powerd.flIntensity - delta_int)
         end
-		if msg ~= nil then
+    end
+    return true
+end
+
+function ReaderFrontLight:onShowIntensity()
+    local powerd = Device:getPowerDevice()
+    if powerd.flIntensity ~= nil then
         UIManager:show(Notification:new{
-				text = msg..powerd.flIntensity,
-				timeout = 1
+            text = _("Frontlight intensity is set to ")..powerd.flIntensity,
+            timeout = 1.0,
         })
     end
+end
+
+function ReaderFrontLight:onSwipe(arg, ges)
+    if ges.direction == "north" or ges.direction == "south" then
+        return self:onShowIntensity()
     end
-	return true
+end
+
+function ReaderFrontLight:onPanRelease(arg, ges)
+    return self:onShowIntensity()
 end
 
 function ReaderFrontLight:addToMainMenu(tab_item_table)