requirements

Requirements for the user interface:

G001 Each entity on the screen is an instance of a C++ class. It can be painted again and attributes can change with function calls.

G002 Every entity is painted on top of a graphic. This graphic can be the entire screen, a message-box, a 1D scroll list or 2D scroll list.

G003 Every dialog, message-box, 1D scroll list or 2D scroll list can catch keyboard buttons, swipe events, touch-screen press and release and other events.

Dialogs

D001 Every dialog can catch keyboard buttons in a function, which is obligatory for each dialog.

D002 Every message box is derived from a dialog and has a similar structure. The lifespan is probably less than the dialog.

D003 Every graphical screen can be composed of multiple dialogs. It is wise that dialogs do not occupy the same space on screen. For a background dialog this is not a problem.

Objects

U001 The background object can be used to create any background.

U001.01 Each background can have one colour, two colours or a graphical pattern.

U001.02 Each background has a radius on corners of up to half the object height.

U001.03 Each background can have several fill patterns.

U001.04 Each background becomes 40% darker when pressed and slowly goes back to normal when released.

U002 The image object can be used to paint a picture

U002.01 Each image can be resized

U002.02 Each image is loaded once from disk to memory

U002.03 Each image background becomes 40% darker when pressed and slowly goes back to normal, even when a picture has a transparant background.

U002.04 Each image starts without a label. This can be added later.

U003 Swype dialog

U004 After glow

U005 Amount

U006 Audio

U007 background

U008 bar-graph

U009 button

U010 dialog-event

U011 dialog-list

U012 dialog-object

U013 dialog

U014 drag-object

U015 font

U016 graphics

U017 hand-writer

U018 info-button

U019 json-object

U020 key-file

U021 label

U022 message-box

U023 rect

U024 point

U025 size

U026 rectangle

U027 slider

U028 surface

U029 swype-dialog

U030 text

U031 touch