update test file & add TestGrid widget for debug

wtest.lua

@@ -1,5 +1,22 @@
 require "ui"
 
+TestGrid = Widget:new{}
+
+function TestGrid:paintTo()
+	v_line = math.floor(G_width / 50)
+	h_line = math.floor(G_height / 50)
+	for i=1,h_line do
+		y_num = i*50
+		renderUtf8Text(fb.bb, 0, y_num+10, Font:getFace("ffont", 12), y_num, true)
+		fb.bb:paintRect(0, y_num, G_width, 1, 10)
+	end
+	for i=1,v_line do
+		x_num = i*50
+		renderUtf8Text(fb.bb, x_num, 10, Font:getFace("ffont", 12), x_num, true)
+		fb.bb:paintRect(x_num, 0, 1, G_height, 10)
+	end
+end
+
 -- we create a widget that paints a background:
 Background = InputContainer:new{
 	is_always_active = true, -- receive events when other dialogs are active
@@ -97,16 +114,25 @@ menu_items = {
 	{text = "item10"},
 	{text = "item11"},
 	{text = "item12"},
+	{text = "item13"},
+	{text = "item14"},
+	{text = "item15"},
+	{text = "item16"},
+	{text = "item17"},
 }
 M = Menu:new{
 	title = "Test Menu",
 	item_table = menu_items,
 	width = 500,
-	height = 400,
+	height = 600,
 }
 
 UIManager:show(Background:new())
+UIManager:show(TestGrid)
 UIManager:show(Clock:new())
 UIManager:show(M)
 UIManager:show(Quiz)
 UIManager:run()
+
+
+