Circular progress indicator, indeterminate or showing a value, with optional text.
c2-spinner is a ring that spins while something is in flight. Give it a value (out of max, 100 by default) and it turns into a determinate ring that fills clockwise and animates between values. Text in the default slot sits beside the ring and doubles as its accessible name; without text, label (or “Loading”) names it. It is a progressbar for assistive technology, with aria-valuenow when determinate. Size, stroke, colours and speed are variables, and the reduced-motion setting replaces the pulsing arc with a slow, steady turn.
Use an indeterminate spinner when you cannot tell how long an operation takes, and a value when you can: set it as progress comes in and the arc animates to the new position. value is clamped to 0–max, and clearing it returns the ring to the indeterminate spin.
Always give a spinner a name. Slotted text is announced and also shown; label names a bare ring without showing anything. For a page-level wait, put the spinner inside the region it describes rather than making a separate live region announce it. The c2-button component has its own running state that uses the same look for inline actions.
The ring is a 48-unit SVG box, so --c2-spinner--stroke-width scales with --c2-spinner--size (a 4px stroke is 2px thick on a 24px spinner). --c2-spinner--color is the arc, --c2-spinner__track--color the ring behind it (set transparent for an arc alone), --c2-spinner--animation-duration the cycle time, and --c2-spinner--flex-direction: column moves the text under the ring.
Spinner
Circular progress indicator, indeterminate or showing a value, with optional text.
c2-spinner is a ring that spins while something is in flight. Give it a value (out of max, 100 by default) and it turns into a determinate ring that fills clockwise and animates between values. Text in the default slot sits beside the ring and doubles as its accessible name; without text, label (or “Loading”) names it. It is a progressbar for assistive technology, with aria-valuenow when determinate. Size, stroke, colours and speed are variables, and the reduced-motion setting replaces the pulsing arc with a slow, steady turn.
Use an indeterminate spinner when you cannot tell how long an operation takes, and a value when you can: set it as progress comes in and the arc animates to the new position. value is clamped to 0–max, and clearing it returns the ring to the indeterminate spin.
Always give a spinner a name. Slotted text is announced and also shown; label names a bare ring without showing anything. For a page-level wait, put the spinner inside the region it describes rather than making a separate live region announce it. The c2-button component has its own running state that uses the same look for inline actions.
The ring is a 48-unit SVG box, so --c2-spinner--stroke-width scales with --c2-spinner--size (a 4px stroke is 2px thick on a 24px spinner). --c2-spinner--color is the arc, --c2-spinner__track--color the ring behind it (set transparent for an arc alone), --c2-spinner--animation-duration the cycle time, and --c2-spinner--flex-direction: column moves the text under the ring.
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