add position.lua , it's my library to set Anchor point and get percent pixels size. add layer to set viewport, add this for my Scroll View area. add sheetImage getSize, setSize. add callLoopTime to run a function by a span time.
add position library
add some sample resources
add widget ImageButton. add widget CheckBox. add widget Slider. add widget method wraper showDialog . add textbox setPadding, setPaddingTop method.
add sample for ImageButton, CheckBox, Slider and repair some bug.