338 lines
9.4 KiB
Plaintext
338 lines
9.4 KiB
Plaintext
component BackToTop {
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props {
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threshold: number = 500
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label: string = "Back to top"
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ariaLabel: string = "Scroll back to top"
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icon: string = "icon-[lucide--arrow-up]"
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position: string = "right"
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offset: string = "md"
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behavior: string = "smooth"
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showProgress: boolean = false
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showLabel: boolean = false
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alwaysVisible: boolean = false
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size: string = "default"
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color: string = "primary"
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variant: string = "solid"
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shape: string = "round"
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class: string = ""
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}
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state visible: boolean = false
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state progress: number = 0
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view {
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<button
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{...attrs}
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data-ui-component="BackToTop"
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type="button"
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aria-label='{ariaLabel}'
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title='{label}'
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data-position='{position}'
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data-offset='{offset}'
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data-size='{size}'
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data-color='{color}'
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data-variant='{variant}'
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data-shape='{shape}'
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data-show-label='{showLabel ? "true" : "false"}'
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data-progress='{showProgress ? "true" : "false"}'
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data-show='{alwaysVisible || visible}'
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class='wrn-back-to-top {class}'
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style='--wrn-back-to-top-progress: {progress}%;'
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@window:scroll='visible = window.scrollY >= threshold; progress = Math.min(100, Math.max(0, Math.round((window.scrollY / Math.max(1, document.documentElement.scrollHeight - window.innerHeight)) * 100)))'
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@click='window.scrollTo({ top: 0, behavior: behavior })'
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>
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{#if showProgress}
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<span class="wrn-back-to-top__progress" aria-hidden="true"></span>
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{/if}
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<span class="wrn-back-to-top__surface">
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<span class='wrn-back-to-top__icon {icon}' aria-hidden="true"></span>
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{#if showLabel}
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<span class="wrn-back-to-top__label">{label}</span>
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{/if}
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</span>
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<span class="wrn-back-to-top__sr">{label}</span>
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</button>
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}
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style {
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.wrn-back-to-top {
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--back-accent: var(--wrn-color-primary);
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--back-accent-hover: var(--wrn-color-primary-hover);
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--back-accent-soft: var(--wrn-color-primary-soft);
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--back-contrast: var(--wrn-color-primary-contrast);
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position: fixed;
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z-index: 70;
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display: inline-flex;
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align-items: center;
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justify-content: center;
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min-width: 3rem;
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min-height: 3rem;
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padding: 0;
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color: var(--back-contrast);
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background: transparent;
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border: 0;
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border-radius: 999px;
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cursor: pointer;
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filter: drop-shadow(0 14px 30px color-mix(in srgb, black 22%, transparent));
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transition:
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transform 180ms ease,
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opacity 180ms ease,
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filter 180ms ease;
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}
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.wrn-back-to-top[data-color="secondary"] {
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--back-accent: var(--wrn-color-secondary);
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--back-accent-hover: var(--wrn-color-secondary-hover);
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--back-accent-soft: var(--wrn-color-secondary-soft);
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--back-contrast: var(--wrn-color-secondary-contrast);
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}
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.wrn-back-to-top[data-color="info"] {
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--back-accent: var(--wrn-color-info);
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--back-accent-hover: var(--wrn-color-info-hover);
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--back-accent-soft: var(--wrn-color-info-soft);
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--back-contrast: var(--wrn-color-info-contrast);
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}
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.wrn-back-to-top[data-color="success"] {
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--back-accent: var(--wrn-color-success);
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--back-accent-hover: var(--wrn-color-success-hover);
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--back-accent-soft: var(--wrn-color-success-soft);
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--back-contrast: var(--wrn-color-success-contrast);
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}
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.wrn-back-to-top[data-color="warning"] {
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--back-accent: var(--wrn-color-warning);
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--back-accent-hover: var(--wrn-color-warning-hover);
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--back-accent-soft: var(--wrn-color-warning-soft);
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--back-contrast: var(--wrn-color-warning-contrast);
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}
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.wrn-back-to-top[data-color="danger"] {
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--back-accent: var(--wrn-color-danger);
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--back-accent-hover: var(--wrn-color-danger-hover);
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--back-accent-soft: var(--wrn-color-danger-soft);
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--back-contrast: var(--wrn-color-danger-contrast);
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}
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.wrn-back-to-top[data-position="right"] {
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right: 1.5rem;
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}
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.wrn-back-to-top[data-position="left"] {
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left: 1.5rem;
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}
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.wrn-back-to-top[data-position="center"] {
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left: 50%;
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transform: translateX(-50%);
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}
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.wrn-back-to-top[data-position="center"]:hover {
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transform: translateX(-50%) translateY(-3px);
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}
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.wrn-back-to-top[data-offset="sm"] {
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bottom: 1rem;
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}
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.wrn-back-to-top[data-offset="md"] {
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bottom: 1.5rem;
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}
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.wrn-back-to-top[data-offset="lg"] {
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bottom: 2rem;
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}
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.wrn-back-to-top[data-offset="xl"] {
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bottom: 3rem;
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}
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.wrn-back-to-top[data-size="sm"] {
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min-width: 2.5rem;
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min-height: 2.5rem;
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}
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.wrn-back-to-top[data-size="lg"] {
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min-width: 3.5rem;
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min-height: 3.5rem;
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}
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.wrn-back-to-top[data-show-label="true"] {
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min-width: 0;
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}
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.wrn-back-to-top:hover {
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transform: translateY(-3px);
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filter: drop-shadow(0 18px 36px color-mix(in srgb, var(--back-accent) 24%, transparent));
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}
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.wrn-back-to-top:active {
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transform: translateY(-1px) scale(0.98);
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}
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.wrn-back-to-top__surface {
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position: relative;
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z-index: 2;
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display: inline-flex;
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align-items: center;
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justify-content: center;
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gap: 0.55rem;
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min-width: 3rem;
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min-height: 3rem;
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padding: 0.75rem;
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color: var(--back-contrast);
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background:
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linear-gradient(145deg, color-mix(in srgb, white 10%, transparent), transparent 56%),
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var(--back-accent);
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border: 1px solid color-mix(in srgb, white 18%, transparent);
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border-radius: inherit;
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box-shadow:
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0 1px 0 color-mix(in srgb, white 20%, transparent) inset,
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0 10px 24px color-mix(in srgb, black 18%, transparent);
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backdrop-filter: blur(12px);
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transition:
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background-color 160ms ease,
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border-color 160ms ease,
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color 160ms ease;
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}
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.wrn-back-to-top[data-size="sm"] .wrn-back-to-top__surface {
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min-width: 2.5rem;
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min-height: 2.5rem;
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padding: 0.58rem;
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}
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.wrn-back-to-top[data-size="lg"] .wrn-back-to-top__surface {
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min-width: 3.5rem;
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min-height: 3.5rem;
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padding: 0.9rem;
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}
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.wrn-back-to-top[data-show-label="true"] .wrn-back-to-top__surface {
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min-width: 0;
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padding-inline: 1rem;
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}
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.wrn-back-to-top[data-variant="outline"] .wrn-back-to-top__surface {
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color: var(--back-accent);
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background: color-mix(in srgb, var(--wrn-color-surface-raised) 88%, transparent);
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border-color: color-mix(in srgb, var(--back-accent) 46%, var(--wrn-color-border));
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}
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.wrn-back-to-top[data-variant="soft"] .wrn-back-to-top__surface {
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color: var(--back-accent);
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background: color-mix(in srgb, var(--back-accent-soft) 88%, var(--wrn-color-surface-raised));
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border-color: color-mix(in srgb, var(--back-accent) 22%, var(--wrn-color-border));
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}
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.wrn-back-to-top[data-variant="ghost"] .wrn-back-to-top__surface {
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color: var(--back-accent);
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background: color-mix(in srgb, var(--wrn-color-surface-raised) 68%, transparent);
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border-color: transparent;
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box-shadow: none;
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}
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.wrn-back-to-top[data-variant="minimal"] .wrn-back-to-top__surface {
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color: var(--back-accent);
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background: transparent;
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border-color: transparent;
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box-shadow: none;
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backdrop-filter: none;
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}
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.wrn-back-to-top[data-shape="rounded"] {
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border-radius: 0.9rem;
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}
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.wrn-back-to-top[data-shape="pill"] {
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border-radius: 999px;
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}
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.wrn-back-to-top__progress {
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position: absolute;
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inset: -0.22rem;
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z-index: 1;
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border-radius: inherit;
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background: conic-gradient(
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var(--back-accent) var(--wrn-back-to-top-progress),
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color-mix(in srgb, var(--wrn-color-border) 72%, transparent) var(--wrn-back-to-top-progress)
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);
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mask: radial-gradient(farthest-side, transparent calc(100% - 0.18rem), #000 calc(100% - 0.17rem));
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-webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 0.18rem), #000 calc(100% - 0.17rem));
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pointer-events: none;
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}
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.wrn-back-to-top__icon {
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width: 1.1rem;
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height: 1.1rem;
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flex: 0 0 auto;
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}
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.wrn-back-to-top[data-size="sm"] .wrn-back-to-top__icon {
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width: 0.95rem;
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height: 0.95rem;
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}
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.wrn-back-to-top[data-size="lg"] .wrn-back-to-top__icon {
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width: 1.25rem;
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height: 1.25rem;
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}
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.wrn-back-to-top__label {
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white-space: nowrap;
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font-size: 0.78rem;
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font-weight: 700;
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line-height: 1;
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}
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.wrn-back-to-top__sr {
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position: absolute;
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width: 1px;
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height: 1px;
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padding: 0;
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margin: -1px;
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overflow: hidden;
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clip: rect(0, 0, 0, 0);
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white-space: nowrap;
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border: 0;
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}
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.wrn-back-to-top:focus-visible {
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outline: 2px solid var(--wrn-color-focus);
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outline-offset: 4px;
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}
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@media (max-width: 639px) {
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.wrn-back-to-top[data-position="right"] {
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right: 1rem;
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}
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.wrn-back-to-top[data-position="left"] {
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left: 1rem;
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}
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.wrn-back-to-top[data-offset="lg"],
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.wrn-back-to-top[data-offset="xl"] {
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bottom: 1.25rem;
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}
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}
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@media (prefers-reduced-motion: reduce) {
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.wrn-back-to-top,
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.wrn-back-to-top__surface {
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transition: none;
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}
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.wrn-back-to-top:hover,
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.wrn-back-to-top[data-position="center"]:hover {
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transform: none;
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}
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}
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}
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}
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