Import DisplayOff-v0.1.zip

Author: Bart Lauret

DisplayOffApplet.lua

@@ -0,0 +1,109 @@
+--[[
+
+Display Off Applet based on BlankScreen screensaver
+
+--]]
+
+local oo               = require("loop.simple")
+local io               = require("io")
+local Framework        = require("jive.ui.Framework")
+local Window           = require("jive.ui.Window")
+local Surface          = require("jive.ui.Surface")
+local Icon             = require("jive.ui.Icon")
+local Timer            = require("jive.ui.Timer")
+local Applet           = require("jive.Applet")
+
+local jnt              = jnt
+local appletManager    = appletManager
+
+module(..., Framework.constants)
+oo.class(_M, Applet)
+
+
+function openScreensaver(self, menuItem)
+	log:info("open screensaver")
+	self.window = Window("text_list")
+
+	-- blank screen
+	self.sw, self.sh = Framework:getScreenSize()
+	self.bg  = Surface:newRGBA(self.sw, self.sh)
+	self.bg:filledRectangle(0, 0, self.sw, self.sh, 0x000000FF)
+
+	self.bgicon = Icon("icon", self.bg)
+	self.window:addWidget(self.bgicon)
+
+	self.window:setShowFrameworkWidgets(false)
+
+	-- listeners to allow us to cancel from events, added after window is shown
+	self.window:addListener(EVENT_WINDOW_ACTIVE | EVENT_HIDE,
+		function(event)
+			local type = event:getType()
+			if type == EVENT_WINDOW_ACTIVE then
+				self:_screen("off")
+			else
+				self:_screen("on")
+			end
+			return EVENT_UNUSED
+		end,
+		true
+	)
+
+	self.window:addListener(EVENT_MOTION,
+		function()
+			self:_screen("on")
+			self.window:hide()
+			return EVENT_CONSUME
+		end)
+
+	local manager = appletManager:getAppletInstance("ScreenSavers")
+	manager:screensaverWindow(self.window, _, _, _, "DisplayOff")
+
+	self.window:show(Window.transitionFadeIn)
+end
+
+
+function closeScreensaver(self)
+	log:info("close screensaver")
+	self:_screen("on")
+end
+
+
+function onOverlayWindowShown(self)
+	self:_screen("on")
+end
+
+
+function onOverlayWindowHidden(self)
+	self:_screen("off")
+end
+
+
+local onTimer = Timer(200, function() _write("/sys/class/backlight/mxc_ipu_bl.0/bl_power", "0") end, true)
+
+function _screen(self, state)
+	log:info("screen: ", state)
+	if state == "on" then
+		Framework:setUpdateScreen(true)
+		_write("/sys/class/backlight/mxc_ipu_bl.0/bl_power", "1")
+		_write("/sys/devices/platform/fab4_gpio.0/LCD_DISP", "1")
+		-- turn on backlight on timer to avoid white flash
+		onTimer:restart()
+	else
+		Framework:setUpdateScreen(false)
+		_write("/sys/class/backlight/mxc_ipu_bl.0/bl_power", "1")
+		_write("/sys/devices/platform/fab4_gpio.0/LCD_DISP", "0")
+		onTimer:stop()
+	end
+end
+
+
+function _write(file, val)
+	local fh, err = io.open(file, "w")
+	if err then
+		log:warn("Can't write to ", file)
+		return
+	end
+	fh:write(val)
+	fh:close()
+end
+

DisplayOffMeta.lua

@@ -0,0 +1,37 @@
+--[[
+
+Display Off Applet based on BlankScreen screensaver
+
+--]]
+
+local oo            = require("loop.simple")
+
+local AppletMeta    = require("jive.AppletMeta")
+
+local appletManager = appletManager
+
+module(...)
+oo.class(_M, AppletMeta)
+
+
+function jiveVersion(self)
+	return 1, 1
+end
+
+
+function registerApplet(self)
+end
+
+
+function configureApplet(self)
+	-- remove original
+	appletManager:callService("removeScreenSaver", "BlankScreen", "openScreensaver")
+
+	-- add ourselves
+	appletManager:callService("addScreenSaver",
+		"Display Off",
+		"DisplayOff", 
+		"openScreensaver", _, _, 100, 
+		"closeScreensaver"
+	)
+end