Andreas ReinholdandClaude Opus 5
9828c9258a
Items were 44px tall with the baseline menu's 12px sides, the separator had half its 8dp padding, a disabled item was skipped by the keyboard entirely, a chosen item was told by colour and shape alone, and the list simply faded in place. Now: 48px rows with 16px either side, an 8px separator, disabled items focusable but never activatable, a trailing check on a selected item, and an enter-exit that scales the list out of the corner nearest its trigger — the scale on the spatial spring, the fade on the effects one. Plan step 18, actions.md ACT-11, ACT-12, ACT-13, ACT-26, ACT-27, ACT-28. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
71 lines
3.7 KiB
CSS
71 lines
3.7 KiB
CSS
/*
|
|
* The transitions an action runs between its states — buttons, connected segments, menu items,
|
|
* the FAB menu's trigger.
|
|
*
|
|
* M3 has two spring styles and they are not interchangeable: spatial moves things (position,
|
|
* size, rotation, rounded corners) and overshoots by 9% on the way, effects changes how things
|
|
* look (colour, opacity, elevation) and is critically damped, because a colour must never
|
|
* overshoot — tokens/motion.css says so in the library's own words. An element whose corners and
|
|
* colours both change on a press therefore needs two springs at once, which Tailwind cannot write
|
|
* (`duration-*` and `ease-*` each emit one value); CSS can, by giving `transition-property` a
|
|
* list and matching it position for position.
|
|
*
|
|
* `state-transition-fast` is the press/hover/select transition of a control the finger lands on:
|
|
* shape and size on the fast spatial spring, colour and elevation on the fast effects spring.
|
|
* `state-transition-default` is the same pair one step slower, for the bigger morph of a FAB
|
|
* turning into a close button.
|
|
*
|
|
* `popover-transition` is the enter and exit of a menu: M3 asks for a transition that ties the
|
|
* list to its trigger, so it scales up from its `transform-origin` on the spatial spring while it
|
|
* fades in on the effects one, and `allow-discrete` keeps `display` and `overlay` alive long
|
|
* enough for the exit to be seen.
|
|
*
|
|
* These are `@utility` declarations, so they compile into Tailwind's utilities layer like any
|
|
* other class: a `transition-*` utility written beside one on the call site will fight it, and
|
|
* whichever Tailwind emits last wins. Pass neither.
|
|
*/
|
|
|
|
@utility state-transition-fast {
|
|
transition-property: border-radius, padding, margin, background-color, color, box-shadow;
|
|
transition-duration:
|
|
var(--md-sys-motion-spatial-fast-duration), var(--md-sys-motion-spatial-fast-duration), var(--md-sys-motion-spatial-fast-duration),
|
|
var(--md-sys-motion-effects-fast-duration), var(--md-sys-motion-effects-fast-duration), var(--md-sys-motion-effects-fast-duration);
|
|
transition-timing-function:
|
|
var(--md-sys-motion-spatial-fast), var(--md-sys-motion-spatial-fast), var(--md-sys-motion-spatial-fast),
|
|
var(--md-sys-motion-effects-fast), var(--md-sys-motion-effects-fast), var(--md-sys-motion-effects-fast);
|
|
}
|
|
|
|
@utility state-transition-default {
|
|
transition-property: border-radius, padding, margin, background-color, color, box-shadow;
|
|
transition-duration:
|
|
var(--md-sys-motion-spatial-default-duration), var(--md-sys-motion-spatial-default-duration), var(--md-sys-motion-spatial-default-duration),
|
|
var(--md-sys-motion-effects-default-duration), var(--md-sys-motion-effects-default-duration), var(--md-sys-motion-effects-default-duration);
|
|
transition-timing-function:
|
|
var(--md-sys-motion-spatial-default), var(--md-sys-motion-spatial-default), var(--md-sys-motion-spatial-default),
|
|
var(--md-sys-motion-effects-default), var(--md-sys-motion-effects-default), var(--md-sys-motion-effects-default);
|
|
}
|
|
|
|
@utility popover-transition {
|
|
opacity: 0;
|
|
scale: 0.95;
|
|
transition-property: opacity, scale, display, overlay;
|
|
transition-duration:
|
|
var(--md-sys-motion-effects-fast-duration), var(--md-sys-motion-spatial-fast-duration),
|
|
var(--md-sys-motion-spatial-fast-duration), var(--md-sys-motion-spatial-fast-duration);
|
|
transition-timing-function:
|
|
var(--md-sys-motion-effects-fast), var(--md-sys-motion-spatial-fast), linear, linear;
|
|
transition-behavior: allow-discrete;
|
|
|
|
&:popover-open {
|
|
opacity: 1;
|
|
scale: 1;
|
|
}
|
|
|
|
@starting-style {
|
|
&:popover-open {
|
|
opacity: 0;
|
|
scale: 0.95;
|
|
}
|
|
}
|
|
}
|