add: adjustFWKey(code)

adjustFWKey() will change code event for five way keys
according to current rotation mode. Add this to the
input.waitForEvent loop and your UI can navigate properly
in different rotation mode.

filechooser.lua

@@ -51,33 +51,6 @@ function FileChooser:setPath(newPath)
 	return true
 end
 
-function FileChooser:rotationMode()
-	--[[
-	return code for four kinds of rotation mode:
-
-  0 for no rotation, 
-	1 for landscape with bottom on the right side of screen, etc.
-
-	        2
-	    ---------
-	   |         |
-	   |         |
-	   |         |
-	 3 |         | 1
-	   |         |
-	   |         |
-	   |         |
-	    ---------
-	        0
-	--]]
-	if KEY_FW_DOWN == 116 then
-		return 0
-	end
-	orie_fd = assert(io.open("/sys/module/eink_fb_hal_broads/parameters/bs_orientation", "r"))
-	updown_fd = assert(io.open("/sys/module/eink_fb_hal_broads/parameters/bs_upside_down", "r"))
-	mode = orie_fd:read() + (updown_fd:read() * 2)
-	return mode
-end
 
 function FileChooser:choose(ypos, height)
 	local perpage = math.floor(height / self.spacing) - 1
@@ -151,30 +124,11 @@ function FileChooser:choose(ypos, height)
 		end
 		local ev = input.waitForEvent()
 		if ev.type == EV_KEY and ev.value == EVENT_VALUE_KEY_PRESS then
+			ev.code = adjustFWKey(ev.code)
 			if ev.code == KEY_FW_UP then
-				if self:rotationMode() == 0 then
-					prevItem()
-				elseif self:rotationMode() == 2 then
-					nextItem()
-				end
+				prevItem()
 			elseif ev.code == KEY_FW_DOWN then
-				if self:rotationMode() == 0 then
-					nextItem()
-				elseif self:rotationMode() == 2 then
-					prevItem()
-				end
-			elseif ev.code == KEY_FW_LEFT then
-				if self:rotationMode() == 1 then
-					prevItem()
-				elseif self:rotationMode() == 3 then
-					nextItem()
-				end
-			elseif ev.code == KEY_FW_RIGHT then
-				if self:rotationMode() == 1 then
-					nextItem()
-				elseif self:rotationMode() == 3 then
-					prevItem()
-				end
+				nextItem()
 			elseif ev.code == KEY_F then
 				FontChooser:init()
 				newfont = FontChooser:choose(0, height)

fontchooser.lua

@@ -119,6 +119,7 @@ function FontChooser:choose(ypos, height)
 
 		local ev = input.waitForEvent()
 		if ev.type == EV_KEY and ev.value == EVENT_VALUE_KEY_PRESS then
+			ev.code = adjustFWKey(ev.code)
 			if ev.code == KEY_FW_UP then
 				prevItem()
 			elseif ev.code == KEY_FW_DOWN then

keys.lua

@@ -131,3 +131,75 @@ function set_emu_keycodes()
 	KEY_VPLUS = 95  -- F11
 	KEY_VMINUS = 96 -- F12
 end
+
+function getRotationMode()
+	--[[
+	return code for four kinds of rotation mode:
+
+  0 for no rotation, 
+	1 for landscape with bottom on the right side of screen, etc.
+
+	         2
+	    -----------
+	   |  -------  |
+	   | |       | |
+	   | |       | |
+	   | |       | |  
+	 3 | |       | | 1
+	   | |       | |
+	   | |       | |
+	   |  -------  |
+	   |           |
+	    -----------
+	         0
+	--]]
+	if KEY_FW_DOWN == 116 then -- in EMU mode always return 0
+		return 0
+	end
+	orie_fd = assert(io.open("/sys/module/eink_fb_hal_broads/parameters/bs_orientation", "r"))
+	updown_fd = assert(io.open("/sys/module/eink_fb_hal_broads/parameters/bs_upside_down", "r"))
+	mode = orie_fd:read() + (updown_fd:read() * 2)
+	return mode
+end
+
+function adjustFWKey(code)
+	if getRotationMode() == 0 then
+		return code
+	elseif getRotationMode() == 1 then
+		if code == KEY_FW_UP then
+			return KEY_FW_RIGHT
+		elseif code == KEY_FW_RIGHT then
+			return KEY_FW_DOWN
+		elseif code == KEY_FW_DOWN then
+			return KEY_FW_LEFT
+		elseif code == KEY_FW_LEFT then
+			return KEY_FW_UP
+		else
+			return code
+		end
+	elseif getRotationMode() == 2 then
+		if code == KEY_FW_UP then
+			return KEY_FW_DOWN
+		elseif code == KEY_FW_RIGHT then
+			return KEY_FW_LEFT
+		elseif code == KEY_FW_DOWN then
+			return KEY_FW_UP
+		elseif code == KEY_FW_LEFT then
+			return KEY_FW_RIGHT
+		else
+			return code
+		end
+	elseif getRotationMode() == 3 then
+		if code == KEY_FW_UP then
+			return KEY_FW_LEFT
+		elseif code == KEY_FW_RIGHT then
+			return KEY_FW_UP
+		elseif code == KEY_FW_DOWN then
+			return KEY_FW_RIGHT
+		elseif code == KEY_FW_LEFT then
+			return KEY_FW_DOWN
+		else
+			return code
+		end
+	end
+end