bugfix: hack swipe to unlock after going out of screensaver

by feeding a fake tap at the bottom of the screen

frontend/ui/device.lua

@@ -1,6 +1,8 @@
 Device = {
 	screen_saver_mode = false,
 	charging_mode = false,
+	survive_screen_saver = false,
+	touch_dev = nil,
 	model = nil,
 }
 
@@ -79,6 +81,14 @@ function Device:isTouchDevice()
 	return (self.model == "KindlePaperWhite") or (self.model == "KindleTouch") or util.isEmulated()
 end
 
+function Device:setTouchInputDev(dev)
+	self.touch_dev = dev
+end
+
+function Device:getTouchInputDev()
+	return self.touch_dev
+end
+
 function Device:intoScreenSaver()
 	--os.execute("echo 'screensaver in' >> /mnt/us/event_test.txt")
 	if self.charging_mode == false and self.screen_saver_mode == false then
@@ -102,6 +112,7 @@ function Device:outofScreenSaver()
 		--os.execute("killall -stop cvm")
 		Screen:restoreFromSavedBB()
 		Screen:refresh(0)
+		self.survive_screen_saver = true
 	end
 	self.screen_saver_mode = false
 end

frontend/ui/inputevent.lua

@@ -275,6 +275,7 @@ function Input:init()
 		local dev_mod = Device:getModel()
 		if dev_mod ~= "KindleTouch" then
 			-- event0 in KindleTouch is "WM8962 Beep Generator" (useless)
+			Device:setTouchInputDev("/dev/input/event0")
 			input.open("/dev/input/event0")
 		end
 		if dev_mod ~= "KindleTouch" and dev_mod ~= "KindlePaperWhite" then
@@ -285,6 +286,7 @@ function Input:init()
 		if dev_mod == "KindlePaperWhite" then
 			print("Auto-detected Kindle PaperWhite")
 		elseif dev_mod == "KindleTouch" then
+			Device:setTouchInputDev("/dev/input/event3")
 			input.open("/dev/input/event2") -- Home button
 			input.open("/dev/input/event3") -- touchscreen
 			-- KT does have one key!

reader.lua

@@ -34,11 +34,22 @@ function exitReader()
 
 	input.closeAll()
 
-	if util.isEmulated() ==0 then
+	if util.isEmulated() == 0 then
 		if Device:isKindle3() or (Device:getModel() == "KindleDXG") then
 			-- send double menu key press events to trigger screen refresh
 			os.execute("echo 'send 139' > /proc/keypad;echo 'send 139' > /proc/keypad")
 		end
+		if Device:isTouchDevice() and Device.survive_screen_saver then
+			-- hack the swipe to unlock screen
+			local dev = Device:getTouchInputDev()
+			if dev then
+				local width, height = Screen:getWidth(), Screen:getHeight()
+				input.fakeTapInput(dev, 
+					math.min(width, height)/2,
+					math.max(width, height)-30
+				)
+			end
+		end
 	end
 end