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11.4.4 Selection bar and selection frame
There is a standard selection bar for all list components, but the grid cursor and selection frame need to be
implemented individually if needed. The grid cursor is a 3-pixel frame with black borders and a 1-pixel white fill in the
middle. Ensure that the selected item does not hit the selection frame borders.
Figure 67: Selection bar and grid cursor
11.4.5 Java and Web Controls
As the UI is manipulated by the keyboard, the controls should not look ‘‘clickable.’’ Buttons, check marks and option
balls should only be used in Java and Web applications where it is possible to use a pointing device (Arrow
Manipulated Pointer).
Figure 68: A Web page
11.5 Colours
The display colour is 12 bits and the total colour capability is 4096 tones.
The communicator UI uses a system palette that defines the colour for every control and component in the UI. In the
UI, there are four optional system palettes.
If new components are created, the colours should conform to the system palette.
Keep it simple. In addition to black, grey and white, one main colour in the system is enough. Usually, the dominant
colour is presented in the Title bar.
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