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<concept id="GUID-308A3F78-3DD6-443A-B021-B8E2C2DFEE4D" xml:lang="en"><title>Dimming</title><abstract><p>Dimming is a visual indication that some command or activity

is not possible at that moment.</p><p>Dimming is an important feature especially

in touch usage and notably supports user action with touch UI. Tactile feedback

is not given when user touches a dimmed area except if pop-up without softkeys

is closed.</p></abstract><prolog><metadata><keywords/></metadata></prolog><conbody>

<section id="GUID-C08BA85D-CB47-428E-869B-370077800D21"><title>Dimming the

screen</title><p>The entire screen is dimmed in the background when the <uicontrol>Options</uicontrol> and

power menu, floating toolbars, notes, soft notifications, settings editors

or queries are displayed.</p></section>

<section id="GUID-ED73DBC0-8230-49FB-B1C3-EE53FE4C34C6"><title>Dimming controls</title><p>In

some situations, it may be necessary to dim unavailable controls. This is

done on the component level so that a control has a normal and a dimmed state,

for example, toolbar button.</p><p>Dimming indicates that the

control is temporarily not available. For example, function is not possible

for the focused item, but for the other items in the view. Dimming should

not be used if the user never sees the control in active state within that

view. In this case unavailable control is to be hidden.</p></section>

<section id="GUID-B9A2C268-0BE5-4375-AC4E-63DD6EAAC5E2"><title>Dimming the

Options menu items</title><p>The <uicontrol>Options</uicontrol> menu items

are never dimmed. Instead, unavailable commands are either simply not shown

or an Information note is given explaining why that item cannot be used at

the moment.</p></section>