Files
livewire-material/resources/css/components/app-bar.css
T
Andreas Reinhold / reiniandClaude Opus 5 53bb000425 Let an application replace the safe-area insets and dock on the bottom bar
Components read the device's safe-area insets straight from env(), which a
browser test cannot fake and an application drawing its own status strip
cannot extend. Every inset the package reads, in its CSS and its views, is
now var(--material-safe-top|bottom|left|right, env(safe-area-inset-…)):
unchanged while the variables are unset.

The app shell's --material-bottom-bar also adds
var(--material-bottom-extra, 0px), so an application that docks something on
the phone's navigation bar (an offline banner) sets its height once and the
snackbar, a fab button and the page's bottom padding clear it.

A guard test fails on any env(safe-area-inset-*) outside such a variable, and
AppShellTest's assertion on the bar height's class follows the new value.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RHoXZSHc8gGpZjFmA5fPc2
2026-09-13 18:03:20 +02:00

189 lines
6.2 KiB
CSS

/*
* M3 Expressive's top app bars (AppBarTokens, AppBarSmallTokens, AppBarMediumFlexibleTokens,
* AppBarLargeFlexibleTokens, androidx Compose Material 3, Apache-2.0).
*
* small 64px, title-large title (label-medium subtitle), 4px from the edges, the title 16px
* from the start or straight after the navigation icon
* center the same, the title centred
* medium 112px (136px with a subtitle): the 64px row of icons over a headline-medium title
* large 120px (152px with a subtitle): a display-small title
* search the row holds a search bar
*
* The container is the surface, and surface-container once content scrolls under it. A medium or
* large bar collapses into the small one without script moving anything: the bar is sticky at a
* negative top, so it scrolls up until only 64px of it remain, while its row of icons is sticky at
* 0 inside it and stays put — the big title scrolls away under the row. Script only says when that
* has happened (resources/js/app-bar.js), so the small title can fade in and the colour change.
*/
@layer components {
[data-app-bar] {
--app-bar-row: 4rem;
--app-bar-height: var(--app-bar-row);
z-index: 20;
display: block;
min-height: var(--app-bar-height);
padding-top: var(--material-safe-top, env(safe-area-inset-top));
background-color: var(--md-sys-color-surface);
color: var(--md-sys-color-on-surface);
transition: background-color var(--md-sys-motion-effects-default-duration) var(--md-sys-motion-effects-default);
}
[data-app-bar][data-variant="medium"] {
--app-bar-height: 7rem;
}
[data-app-bar][data-variant="medium"][data-subtitled] {
--app-bar-height: 8.5rem;
}
[data-app-bar][data-variant="large"] {
--app-bar-height: 7.5rem;
}
[data-app-bar][data-variant="large"][data-subtitled] {
--app-bar-height: 9.5rem;
}
[data-app-bar][data-sticky] {
position: sticky;
top: 0;
}
/* `--app-bar-measured` is the bar's real height (a title can wrap), set by app-bar.js. */
[data-app-bar][data-sticky]:is([data-variant="medium"], [data-variant="large"]) {
top: calc(var(--app-bar-row) - var(--app-bar-measured, var(--app-bar-height)));
}
[data-app-bar][data-scrolled] {
background-color: var(--md-sys-color-surface-container);
}
[data-app-bar-row] {
position: sticky;
top: 0;
z-index: 1;
display: flex;
align-items: center;
gap: 0;
min-height: var(--app-bar-row);
padding-inline: 0.25rem;
background-color: inherit;
}
[data-app-bar-leading],
[data-app-bar-trailing] {
display: flex;
flex: none;
align-items: center;
color: var(--md-sys-color-on-surface-variant);
}
[data-app-bar-leading] {
color: var(--md-sys-color-on-surface);
}
[data-app-bar-trailing] {
margin-inline-start: auto;
}
[data-app-bar-headline] {
display: flex;
min-width: 0;
flex: 1 1 0%;
flex-direction: column;
justify-content: center;
padding-inline: 0.75rem;
}
[data-app-bar-row]:has([data-app-bar-leading]) [data-app-bar-headline] {
padding-inline-start: 0.25rem;
}
[data-app-bar-title] {
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
font: var(--md-sys-typescale-title-lg);
letter-spacing: var(--md-sys-typescale-title-lg-tracking);
}
[data-app-bar-subtitle] {
overflow: hidden;
color: var(--md-sys-color-on-surface-variant);
text-overflow: ellipsis;
white-space: nowrap;
font: var(--md-sys-typescale-label-md);
letter-spacing: var(--md-sys-typescale-label-md-tracking);
}
/* Centred: the headline spans the row and centres its text between whatever is at either end. */
[data-app-bar][data-variant="center"] [data-app-bar-headline] {
position: absolute;
inset-inline: 3.5rem;
top: 0;
bottom: 0;
align-items: center;
text-align: center;
pointer-events: none;
}
/* The search bar fills the row. */
[data-app-bar-search] {
min-width: 0;
flex: 1 1 0%;
padding-inline: 0.25rem;
}
/* Medium and large: the row's title is the collapsed one, shown once the big one has gone. */
[data-app-bar]:is([data-variant="medium"], [data-variant="large"]) [data-app-bar-row] [data-app-bar-headline] {
opacity: 0;
transition: opacity var(--md-sys-motion-effects-fast-duration) var(--md-sys-motion-effects-fast);
}
[data-app-bar][data-collapsed] [data-app-bar-row] [data-app-bar-headline] {
opacity: 1;
}
/* Heights from the tokens: the title (and subtitle) lines and the space under them fill what the
row leaves — 36 + 12px medium, 36 + 20 + 16px with a subtitle; 44 + 12px large, 44 + 24 + 20px. */
[data-app-bar-expanded] {
display: flex;
min-height: calc(var(--app-bar-height) - var(--app-bar-row));
flex-direction: column;
justify-content: flex-end;
padding-inline: 1rem;
padding-bottom: 0.75rem;
}
[data-app-bar][data-subtitled] [data-app-bar-expanded] {
padding-bottom: 1rem;
}
[data-app-bar][data-variant="large"][data-subtitled] [data-app-bar-expanded] {
padding-bottom: 1.25rem;
}
[data-app-bar-expanded] [data-app-bar-title] {
white-space: normal;
font: var(--md-sys-typescale-headline-md);
letter-spacing: var(--md-sys-typescale-headline-md-tracking);
}
[data-app-bar-expanded] [data-app-bar-subtitle] {
font: var(--md-sys-typescale-label-lg);
letter-spacing: var(--md-sys-typescale-label-lg-tracking);
}
[data-app-bar][data-variant="large"] [data-app-bar-expanded] [data-app-bar-title] {
font: var(--md-sys-typescale-display-sm);
letter-spacing: var(--md-sys-typescale-display-sm-tracking);
}
[data-app-bar][data-variant="large"] [data-app-bar-expanded] [data-app-bar-subtitle] {
font: var(--md-sys-typescale-title-md);
letter-spacing: var(--md-sys-typescale-title-md-tracking);
}
}