Primarily for usage in timelines, a scroll-zoom bar lets a user scroll or zoom with the same control.
Scroll-zoom bars come in three different sizes: small, medium, and large. The medium size is the default and most frequently used option. Use the other sizes sparingly; they should be used to create a hierarchy of importance within the page.
Scroll-zoom bars can be either horizontal or vertical in orientation.
A scroll-zoom bar can float above an area, and the track can be hidden.
The handles of a scroll-zoom bar can be hidden whenever a user is not directly interacting with the component.
Regardless of its size, a scroll-zoom bar can be minimized to 4 px wide (on desktop) or 5 px wide (on mobile) when a user is not interacting with it. If scaling down, the handles should also disappear.
By default, a scroll-zoom bar is attached to the bottom and sides of a page or area. It can also be detached from a panel, to float on top of an area. If detached, the track should have fully rounded corners.
From the design point of view, each component has a number of options. These options and their names are platform agnostic, and each implementation should adapt these to fit into their framework.
small / medium / large
horizontal / vertical
yes / no
yes / no
yes / no
yes / no
Clicking and dragging the middle portion of the bar scrolls the timeline area horizontally or vertically, depending on the context. The handles at the edges of the bar can be clicked and dragged to zoom in or zoom out of the timeline (dragging inward zooms in, while dragging outward zooms out).
On hover, the cursor shows a pointing hand. On mouse down, the cursor shows a pointing hand slider cursor when scrolling.
|Apr 12, 2021||1.0.0|
Includes all interactive states that are applicable (hover, down, focus, keyboard focus, disabled).
Works properly across all four color themes (lightest, light, dark, darkest).
Includes a desktop scale (UWP, macOS, web desktop) and a mobile scale (iOS, Android, web mobile).
Color is not used as the only visual means of conveying information (WCAG 2.0 1.4.1).
Text has a contrast ratio of at least 4.5:1 for small text and at least 3:1 for large text (WCAG 2.0 1.4.3).
Visual information required to identify components and states (except inactive components) has a contrast ratio of at least 3:1 (WCAG 2.1 1.4.11).
UI language and information design considerations have been incorporated into component design.
Includes relevant options (variant, style, size, orientation, optional iconography, decorations, selection, error state, etc.)
Includes guidelines for keyboard focus, layout (wrapping, truncation, overflow), animation, interactions, etc.
Includes a list of dos and don'ts that highlight best practices and common mistakes.
Includes content standards or usage guidelines for how to write or format in-product content for the component.
Works properly across various locales and includes guidelines for bi-directionality (RTL).
Follows WCAG 2.0 standards for keyboard accessibility guidelines and includes a description of the keyboard interactions.
All design attributes (color, typography, layout, animation, etc.) are available as design tokens.
Includes a downloadable XD file that shows multiple options, states, color themes, and platform scales.
Includes a downloadable XD file, generated by code using design tokens defined in Spectrum DNA, and shows multiple options, states, color themes, and platform scales.
Component is included in the Spectrum for Adobe XD plugin.