mirror of
https://github.com/immich-app/immich
synced 2025-11-14 17:36:12 +00:00
refactor(web): extract timeline scrolling logic into common Photostream components
- Extract common timeline functionality into Photostream.svelte base component - Create PhotostreamWithScrubber.svelte to handle scrubber integration - Simplify Timeline.svelte by removing ~300 lines of scrolling/scrubber logic - Add findMonthAtScrollPosition utility with binary search for better performance - Maintain all existing functionality while improving code organization
This commit is contained in:
parent
ed63399181
commit
8d32ec1f18
5 changed files with 646 additions and 461 deletions
290
web/src/lib/components/timeline/Photostream.svelte
Normal file
290
web/src/lib/components/timeline/Photostream.svelte
Normal file
|
|
@ -0,0 +1,290 @@
|
|||
<script lang="ts">
|
||||
import { afterNavigate, beforeNavigate } from '$app/navigation';
|
||||
import { page } from '$app/stores';
|
||||
import { resizeObserver, type OnResizeCallback } from '$lib/actions/resize-observer';
|
||||
import HotModuleReload from '$lib/elements/HotModuleReload.svelte';
|
||||
import type { PhotostreamManager } from '$lib/managers/photostream-manager/PhotostreamManager.svelte';
|
||||
import type { PhotostreamSegment } from '$lib/managers/photostream-manager/PhotostreamSegment.svelte';
|
||||
|
||||
import { assetViewingStore } from '$lib/stores/asset-viewing.store';
|
||||
import { mobileDevice } from '$lib/stores/mobile-device.svelte';
|
||||
import { onMount, type Snippet } from 'svelte';
|
||||
import type { UpdatePayload } from 'vite';
|
||||
|
||||
interface Props {
|
||||
segment: Snippet<
|
||||
[
|
||||
{
|
||||
segment: PhotostreamSegment;
|
||||
scrollToFunction: (top: number) => void;
|
||||
onScrollCompensationMonthInDOM: (compensation: { heightDelta?: number; scrollTop?: number }) => void;
|
||||
},
|
||||
]
|
||||
>;
|
||||
skeleton: Snippet<
|
||||
[
|
||||
{
|
||||
segment: PhotostreamSegment;
|
||||
},
|
||||
]
|
||||
>;
|
||||
|
||||
showScrollbar?: boolean;
|
||||
/** `true` if this asset grid responds to navigation events; if `true`, then look at the
|
||||
`AssetViewingStore.gridScrollTarget` and load and scroll to the asset specified, and
|
||||
additionally, update the page location/url with the asset as the asset-grid is scrolled */
|
||||
enableRouting: boolean;
|
||||
timelineManager: PhotostreamManager;
|
||||
|
||||
showSkeleton?: boolean;
|
||||
isShowDeleteConfirmation?: boolean;
|
||||
styleMarginRightOverride?: string;
|
||||
|
||||
header?: Snippet<[scrollToFunction: (top: number) => void]>;
|
||||
children?: Snippet;
|
||||
empty?: Snippet;
|
||||
handleTimelineScroll?: () => void;
|
||||
}
|
||||
|
||||
let {
|
||||
segment,
|
||||
|
||||
enableRouting,
|
||||
timelineManager = $bindable(),
|
||||
showSkeleton = $bindable(true),
|
||||
styleMarginRightOverride,
|
||||
isShowDeleteConfirmation = $bindable(false),
|
||||
showScrollbar,
|
||||
children,
|
||||
skeleton,
|
||||
empty,
|
||||
header,
|
||||
handleTimelineScroll = () => {},
|
||||
}: Props = $props();
|
||||
|
||||
let { gridScrollTarget } = assetViewingStore;
|
||||
|
||||
let element: HTMLElement | undefined = $state();
|
||||
let timelineElement: HTMLElement | undefined = $state();
|
||||
|
||||
const maxMd = $derived(mobileDevice.maxMd);
|
||||
const isEmpty = $derived(timelineManager.isInitialized && timelineManager.months.length === 0);
|
||||
|
||||
$effect(() => {
|
||||
const layoutOptions = maxMd
|
||||
? {
|
||||
rowHeight: 100,
|
||||
headerHeight: 32,
|
||||
}
|
||||
: {
|
||||
rowHeight: 235,
|
||||
headerHeight: 48,
|
||||
};
|
||||
timelineManager.setLayoutOptions(layoutOptions);
|
||||
});
|
||||
|
||||
const scrollTo = (top: number) => {
|
||||
if (element) {
|
||||
element.scrollTo({ top });
|
||||
}
|
||||
updateSlidingWindow();
|
||||
};
|
||||
|
||||
const scrollBy = (y: number) => {
|
||||
if (element) {
|
||||
element.scrollBy(0, y);
|
||||
}
|
||||
updateSlidingWindow();
|
||||
};
|
||||
|
||||
const handleTriggeredScrollCompensation = (compensation: { heightDelta?: number; scrollTop?: number }) => {
|
||||
const { heightDelta, scrollTop } = compensation;
|
||||
if (heightDelta !== undefined) {
|
||||
scrollBy(heightDelta);
|
||||
} else if (scrollTop !== undefined) {
|
||||
scrollTo(scrollTop);
|
||||
}
|
||||
timelineManager.clearScrollCompensation();
|
||||
};
|
||||
|
||||
const getAssetHeight = (assetId: string, monthGroup: PhotostreamSegment) => {
|
||||
// the following method may trigger any layouts, so need to
|
||||
// handle any scroll compensation that may have been set
|
||||
const height = monthGroup.findAssetAbsolutePosition(assetId);
|
||||
|
||||
// this is in a while loop, since scrollCompensations invoke scrolls
|
||||
// which may load months, triggering more scrollCompensations. Call
|
||||
// this in a loop, until no more layouts occur.
|
||||
while (timelineManager.scrollCompensation.monthGroup) {
|
||||
handleTriggeredScrollCompensation(timelineManager.scrollCompensation);
|
||||
}
|
||||
return height;
|
||||
};
|
||||
|
||||
const assetIsVisible = (assetTop: number): boolean => {
|
||||
if (!element) {
|
||||
return false;
|
||||
}
|
||||
|
||||
const { clientHeight, scrollTop } = element;
|
||||
return assetTop >= scrollTop && assetTop < scrollTop + clientHeight;
|
||||
};
|
||||
|
||||
export const scrollToAssetId = (assetId: string) => {
|
||||
const monthGroup = timelineManager.getSegmentForAssetId(assetId);
|
||||
if (!monthGroup) {
|
||||
return false;
|
||||
}
|
||||
const height = getAssetHeight(assetId, monthGroup);
|
||||
|
||||
// If the asset is already visible, then don't scroll.
|
||||
if (assetIsVisible(height)) {
|
||||
return true;
|
||||
}
|
||||
|
||||
scrollTo(height);
|
||||
return true;
|
||||
};
|
||||
|
||||
const completeNav = () => {
|
||||
const scrollTarget = $gridScrollTarget?.at;
|
||||
let scrolled = false;
|
||||
if (scrollTarget) {
|
||||
scrolled = scrollToAssetId(scrollTarget);
|
||||
}
|
||||
if (!scrolled) {
|
||||
// if the asset is not found, scroll to the top
|
||||
scrollTo(0);
|
||||
}
|
||||
showSkeleton = false;
|
||||
};
|
||||
|
||||
beforeNavigate(() => (timelineManager.suspendTransitions = true));
|
||||
|
||||
afterNavigate((nav) => {
|
||||
const { complete } = nav;
|
||||
complete.then(completeNav, completeNav);
|
||||
});
|
||||
|
||||
const updateIsScrolling = () => (timelineManager.scrolling = true);
|
||||
// Yes, updateSlideWindow() is called by the onScroll event. However, if you also just scrolled
|
||||
// by explicitly invoking element.scrollX functions, there may be a delay with enough time to
|
||||
// set the intersecting property of the monthGroup to false, then true, which causes the DOM
|
||||
// nodes to be recreated, causing bad perf, and also, disrupting focus of those elements.
|
||||
// Also note: don't throttle, debounce, or otherwise do this function async - it causes flicker
|
||||
const updateSlidingWindow = () => timelineManager.updateSlidingWindow(element?.scrollTop || 0);
|
||||
|
||||
const topSectionResizeObserver: OnResizeCallback = ({ height }) => (timelineManager.topSectionHeight = height);
|
||||
|
||||
onMount(() => {
|
||||
if (!enableRouting) {
|
||||
showSkeleton = false;
|
||||
}
|
||||
});
|
||||
</script>
|
||||
|
||||
<HotModuleReload
|
||||
onAfterUpdate={(payload: UpdatePayload) => {
|
||||
// when hmr happens, skeleton is initialized to true by default
|
||||
// normally, loading asset-grid is part of a navigation event, and the completion of
|
||||
// that event triggers a scroll-to-asset, if necessary, when then clears the skeleton.
|
||||
// this handler will run the navigation/scroll-to-asset handler when hmr is performed,
|
||||
// preventing skeleton from showing after hmr
|
||||
const finishHmr = () => {
|
||||
const asset = $page.url.searchParams.get('at');
|
||||
if (asset) {
|
||||
$gridScrollTarget = { at: asset };
|
||||
}
|
||||
void completeNav();
|
||||
};
|
||||
const assetGridUpdate = payload.updates.some((update) => update.path.endsWith('Photostream.svelte'));
|
||||
if (assetGridUpdate) {
|
||||
// wait 500ms for the update to be fully swapped in
|
||||
setTimeout(finishHmr, 500);
|
||||
}
|
||||
}}
|
||||
/>
|
||||
|
||||
{@render header?.(scrollTo)}
|
||||
|
||||
<!-- Right margin MUST be equal to the width of scrubber -->
|
||||
<section
|
||||
id="asset-grid"
|
||||
class={[
|
||||
'h-full overflow-y-auto outline-none',
|
||||
{ 'scrollbar-hidden': !showScrollbar },
|
||||
{ 'm-0': isEmpty },
|
||||
{ 'ms-0': !isEmpty },
|
||||
]}
|
||||
style:margin-right={styleMarginRightOverride}
|
||||
style:scrollbar-width={showScrollbar ? 'auto' : 'none'}
|
||||
tabindex="-1"
|
||||
bind:clientHeight={timelineManager.viewportHeight}
|
||||
bind:clientWidth={null, (v: number) => ((timelineManager.viewportWidth = v), updateSlidingWindow())}
|
||||
bind:this={element}
|
||||
onscroll={() => (handleTimelineScroll(), updateSlidingWindow(), updateIsScrolling())}
|
||||
>
|
||||
<section
|
||||
bind:this={timelineElement}
|
||||
id="virtual-timeline"
|
||||
class:invisible={showSkeleton}
|
||||
style:height={timelineManager.timelineHeight + 'px'}
|
||||
>
|
||||
<section
|
||||
use:resizeObserver={topSectionResizeObserver}
|
||||
class:invisible={showSkeleton}
|
||||
style:position="absolute"
|
||||
style:left="0"
|
||||
style:right="0"
|
||||
>
|
||||
{@render children?.()}
|
||||
{#if isEmpty}
|
||||
<!-- (optional) empty placeholder -->
|
||||
{@render empty?.()}
|
||||
{/if}
|
||||
</section>
|
||||
|
||||
{#each timelineManager.months as monthGroup (monthGroup.id)}
|
||||
{@const shouldDisplay = monthGroup.intersecting}
|
||||
{@const absoluteHeight = monthGroup.top}
|
||||
<div
|
||||
class="month-group"
|
||||
style:height={monthGroup.height + 'px'}
|
||||
style:position="absolute"
|
||||
style:transform={`translate3d(0,${absoluteHeight}px,0)`}
|
||||
style:width="100%"
|
||||
>
|
||||
{#if !shouldDisplay}
|
||||
{@render skeleton({ segment: monthGroup })}
|
||||
{:else}
|
||||
{@render segment({
|
||||
segment: monthGroup,
|
||||
scrollToFunction: scrollTo,
|
||||
onScrollCompensationMonthInDOM: handleTriggeredScrollCompensation,
|
||||
})}
|
||||
{/if}
|
||||
</div>
|
||||
{/each}
|
||||
<!-- spacer for lead-out -->
|
||||
<div
|
||||
class="h-[60px]"
|
||||
style:position="absolute"
|
||||
style:left="0"
|
||||
style:right="0"
|
||||
style:transform={`translate3d(0,${timelineManager.timelineHeight}px,0)`}
|
||||
></div>
|
||||
</section>
|
||||
</section>
|
||||
|
||||
<style>
|
||||
#asset-grid {
|
||||
contain: strict;
|
||||
scrollbar-width: none;
|
||||
}
|
||||
.month-group {
|
||||
contain: layout size paint;
|
||||
transform-style: flat;
|
||||
backface-visibility: hidden;
|
||||
transform-origin: center center;
|
||||
}
|
||||
</style>
|
||||
195
web/src/lib/components/timeline/PhotostreamWithScrubber.svelte
Normal file
195
web/src/lib/components/timeline/PhotostreamWithScrubber.svelte
Normal file
|
|
@ -0,0 +1,195 @@
|
|||
<script lang="ts">
|
||||
import Photostream from '$lib/components/timeline/Photostream.svelte';
|
||||
import Scrubber from '$lib/components/timeline/Scrubber.svelte';
|
||||
import type { PhotostreamSegment } from '$lib/managers/photostream-manager/PhotostreamSegment.svelte';
|
||||
import { findMonthAtScrollPosition } from '$lib/managers/timeline-manager/internal/search-support.svelte';
|
||||
import type { MonthGroup } from '$lib/managers/timeline-manager/month-group.svelte';
|
||||
|
||||
import type { TimelineManager } from '$lib/managers/timeline-manager/timeline-manager.svelte';
|
||||
import type { TimelineAsset } from '$lib/managers/timeline-manager/types';
|
||||
import { type ScrubberListenerWithScrollTo, type TimelineYearMonth } from '$lib/utils/timeline-util';
|
||||
import type { Snippet } from 'svelte';
|
||||
|
||||
interface Props {
|
||||
/** `true` if this timeline responds to navigation events; if `true`, then look at the
|
||||
`AssetViewingStore.gridScrollTarget` and load and scroll to the asset specified, and
|
||||
additionally, update the page location/url with the asset as the asset-grid is scrolled */
|
||||
enableRouting: boolean;
|
||||
timelineManager: TimelineManager;
|
||||
|
||||
showSkeleton?: boolean;
|
||||
isShowDeleteConfirmation?: boolean;
|
||||
|
||||
segment: Snippet<
|
||||
[
|
||||
{
|
||||
segment: PhotostreamSegment;
|
||||
onScrollCompensationMonthInDOM: (compensation: { heightDelta?: number; scrollTop?: number }) => void;
|
||||
},
|
||||
]
|
||||
>;
|
||||
skeleton: Snippet<
|
||||
[
|
||||
{
|
||||
segment: PhotostreamSegment;
|
||||
},
|
||||
]
|
||||
>;
|
||||
children?: Snippet;
|
||||
empty?: Snippet;
|
||||
}
|
||||
|
||||
let {
|
||||
enableRouting,
|
||||
timelineManager = $bindable(),
|
||||
|
||||
showSkeleton = $bindable(true),
|
||||
isShowDeleteConfirmation = $bindable(false),
|
||||
segment,
|
||||
skeleton,
|
||||
children,
|
||||
empty,
|
||||
}: Props = $props();
|
||||
|
||||
const VIEWPORT_MULTIPLIER = 2; // Used to determine if timeline is "small"
|
||||
|
||||
// The percentage of scroll through the month that is currently intersecting the top boundary of the viewport.
|
||||
// Note: There may be multiple months visible within the viewport at any given time.
|
||||
let viewportTopMonthScrollPercent = $state(0);
|
||||
// The timeline month intersecting the top position of the viewport
|
||||
let viewportTopMonth: TimelineYearMonth | undefined = $state(undefined);
|
||||
// Overall scroll percentage through the entire timeline (0-1)
|
||||
let timelineScrollPercent: number = $state(0);
|
||||
// Indicates whether the viewport is currently in the lead-out section (after all months)
|
||||
let isInLeadOutSection = $state(false);
|
||||
// Width of the scrubber component in pixels, used to adjust timeline margins
|
||||
let scrubberWidth: number = $state(0);
|
||||
|
||||
// note: don't throttle, debounce, or otherwise make this function async - it causes flicker
|
||||
// this function updates the scrubber position based on the current scroll position in the timeline
|
||||
const handleTimelineScroll = () => {
|
||||
isInLeadOutSection = false;
|
||||
|
||||
// Handle edge cases: small timeline (limited scroll) or lead-in area scrolling
|
||||
const top = timelineManager.visibleWindow.top;
|
||||
if (isSmallTimeline() || top < timelineManager.topSectionHeight) {
|
||||
calculateTimelineScrollPercent();
|
||||
return;
|
||||
}
|
||||
|
||||
// Handle normal month scrolling
|
||||
handleMonthScroll();
|
||||
};
|
||||
|
||||
const handleMonthScroll = () => {
|
||||
const scrollPosition = timelineManager.visibleWindow.top;
|
||||
const months = timelineManager.months;
|
||||
const maxScrollPercent = timelineManager.getMaxScrollPercent();
|
||||
|
||||
// Find the month at the current scroll position
|
||||
const searchResult = findMonthAtScrollPosition(months, scrollPosition, maxScrollPercent);
|
||||
|
||||
if (searchResult) {
|
||||
viewportTopMonth = searchResult.month;
|
||||
viewportTopMonthScrollPercent = searchResult.monthScrollPercent;
|
||||
isInLeadOutSection = false;
|
||||
return;
|
||||
}
|
||||
|
||||
// We're in lead-out section
|
||||
isInLeadOutSection = true;
|
||||
timelineScrollPercent = 1;
|
||||
resetScrubberMonth();
|
||||
};
|
||||
|
||||
const resetScrubberMonth = () => {
|
||||
viewportTopMonth = undefined;
|
||||
viewportTopMonthScrollPercent = 0;
|
||||
};
|
||||
|
||||
const calculateTimelineScrollPercent = () => {
|
||||
const maxScroll = timelineManager.getMaxScroll();
|
||||
timelineScrollPercent = Math.min(1, timelineManager.visibleWindow.top / maxScroll);
|
||||
resetScrubberMonth();
|
||||
};
|
||||
|
||||
const handleOverallPercentScroll = (percent: number, scrollTo?: (offset: number) => void) => {
|
||||
const maxScroll = timelineManager.getMaxScroll();
|
||||
const offset = maxScroll * percent;
|
||||
scrollTo?.(offset);
|
||||
};
|
||||
|
||||
const findMonthGroup = (target: TimelineYearMonth) => {
|
||||
return timelineManager.months.find(
|
||||
({ yearMonth }) => yearMonth.year === target.year && yearMonth.month === target.month,
|
||||
);
|
||||
};
|
||||
|
||||
const isSmallTimeline = () => {
|
||||
return timelineManager.timelineHeight < timelineManager.viewportHeight * VIEWPORT_MULTIPLIER;
|
||||
};
|
||||
|
||||
// note: don't throttle, debounce, or otherwise make this function async - it causes flicker
|
||||
// this function scrolls the timeline to the specified month group and offset, based on scrubber interaction
|
||||
const onScrub: ScrubberListenerWithScrollTo = (scrubberData) => {
|
||||
const { scrubberMonth, overallScrollPercent, scrubberMonthScrollPercent, scrollToFunction } = scrubberData;
|
||||
|
||||
// Handle edge case or no month selected
|
||||
if (!scrubberMonth || isSmallTimeline()) {
|
||||
handleOverallPercentScroll(overallScrollPercent, scrollToFunction);
|
||||
return;
|
||||
}
|
||||
|
||||
// Find and scroll to the selected month
|
||||
const monthGroup = findMonthGroup(scrubberMonth);
|
||||
if (monthGroup) {
|
||||
scrollToPositionWithinMonth(monthGroup, scrubberMonthScrollPercent, scrollToFunction);
|
||||
}
|
||||
};
|
||||
|
||||
const scrollToPositionWithinMonth = (
|
||||
monthGroup: MonthGroup,
|
||||
monthGroupScrollPercent: number,
|
||||
handleScrollTop?: (top: number) => void,
|
||||
) => {
|
||||
const topOffset = monthGroup.top;
|
||||
const maxScrollPercent = timelineManager.getMaxScrollPercent();
|
||||
const delta = monthGroup.height * monthGroupScrollPercent;
|
||||
const scrollToTop = (topOffset + delta) * maxScrollPercent;
|
||||
|
||||
handleScrollTop?.(scrollToTop);
|
||||
};
|
||||
let baseTimelineViewer: Photostream | undefined = $state();
|
||||
export const scrollToAsset = (asset: TimelineAsset) => baseTimelineViewer?.scrollToAssetId(asset.id) ?? false;
|
||||
</script>
|
||||
|
||||
<Photostream
|
||||
bind:this={baseTimelineViewer}
|
||||
{enableRouting}
|
||||
{timelineManager}
|
||||
{showSkeleton}
|
||||
{isShowDeleteConfirmation}
|
||||
styleMarginRightOverride={scrubberWidth + 'px'}
|
||||
{handleTimelineScroll}
|
||||
{segment}
|
||||
{skeleton}
|
||||
{children}
|
||||
{empty}
|
||||
>
|
||||
{#snippet header(scrollToFunction)}
|
||||
{#if timelineManager.months.length > 0}
|
||||
<Scrubber
|
||||
{timelineManager}
|
||||
height={timelineManager.viewportHeight}
|
||||
timelineTopOffset={timelineManager.topSectionHeight}
|
||||
timelineBottomOffset={timelineManager.bottomSectionHeight}
|
||||
{isInLeadOutSection}
|
||||
{timelineScrollPercent}
|
||||
{viewportTopMonthScrollPercent}
|
||||
{viewportTopMonth}
|
||||
onScrub={(scrubberData) => onScrub({ ...scrubberData, scrollToFunction })}
|
||||
bind:scrubberWidth
|
||||
/>
|
||||
{/if}
|
||||
{/snippet}
|
||||
</Photostream>
|
||||
|
|
@ -1,16 +1,12 @@
|
|||
<script lang="ts">
|
||||
import { afterNavigate, beforeNavigate } from '$app/navigation';
|
||||
import { page } from '$app/stores';
|
||||
import { resizeObserver, type OnResizeCallback } from '$lib/actions/resize-observer';
|
||||
import Thumbnail from '$lib/components/assets/thumbnail/thumbnail.svelte';
|
||||
import MonthSegment from '$lib/components/timeline/MonthSegment.svelte';
|
||||
import Scrubber from '$lib/components/timeline/Scrubber.svelte';
|
||||
import PhotostreamWithScrubber from '$lib/components/timeline/PhotostreamWithScrubber.svelte';
|
||||
import SelectableDay from '$lib/components/timeline/SelectableDay.svelte';
|
||||
import SelectableSegment from '$lib/components/timeline/SelectableSegment.svelte';
|
||||
import TimelineAssetViewer from '$lib/components/timeline/TimelineAssetViewer.svelte';
|
||||
import TimelineKeyboardActions from '$lib/components/timeline/actions/TimelineKeyboardActions.svelte';
|
||||
import { AssetAction } from '$lib/constants';
|
||||
import HotModuleReload from '$lib/elements/HotModuleReload.svelte';
|
||||
import Portal from '$lib/elements/Portal.svelte';
|
||||
import Skeleton from '$lib/elements/Skeleton.svelte';
|
||||
import type { MonthGroup } from '$lib/managers/timeline-manager/month-group.svelte';
|
||||
|
|
@ -18,18 +14,10 @@
|
|||
import type { TimelineAsset } from '$lib/managers/timeline-manager/types';
|
||||
import type { AssetInteraction } from '$lib/stores/asset-interaction.svelte';
|
||||
import { assetViewingStore } from '$lib/stores/asset-viewing.store';
|
||||
import { mobileDevice } from '$lib/stores/mobile-device.svelte';
|
||||
import { navigate } from '$lib/utils/navigation';
|
||||
import {
|
||||
getSegmentIdentifier,
|
||||
getTimes,
|
||||
type ScrubberListener,
|
||||
type TimelineYearMonth,
|
||||
} from '$lib/utils/timeline-util';
|
||||
import { getSegmentIdentifier, getTimes } from '$lib/utils/timeline-util';
|
||||
import { type AlbumResponseDto, type PersonResponseDto } from '@immich/sdk';
|
||||
import { DateTime } from 'luxon';
|
||||
import { onMount, type Snippet } from 'svelte';
|
||||
import type { UpdatePayload } from 'vite';
|
||||
import { type Snippet } from 'svelte';
|
||||
|
||||
interface Props {
|
||||
isSelectionMode?: boolean;
|
||||
|
|
@ -83,301 +71,10 @@
|
|||
customThumbnailLayout,
|
||||
}: Props = $props();
|
||||
|
||||
let { isViewing: showAssetViewer, asset: viewingAsset, gridScrollTarget } = assetViewingStore;
|
||||
let { isViewing: showAssetViewer, asset: viewingAsset } = assetViewingStore;
|
||||
|
||||
let element: HTMLElement | undefined = $state();
|
||||
|
||||
let timelineElement: HTMLElement | undefined = $state();
|
||||
let showSkeleton = $state(true);
|
||||
// The percentage of scroll through the month that is currently intersecting the top boundary of the viewport.
|
||||
// Note: There may be multiple months visible within the viewport at any given time.
|
||||
let viewportTopMonthScrollPercent = $state(0);
|
||||
// The timeline month intersecting the top position of the viewport
|
||||
let viewportTopMonth: { year: number; month: number } | undefined = $state(undefined);
|
||||
// Overall scroll percentage through the entire timeline (0-1)
|
||||
let timelineScrollPercent: number = $state(0);
|
||||
let scrubberWidth = $state(0);
|
||||
|
||||
// 60 is the bottom spacer element at 60px
|
||||
let bottomSectionHeight = 60;
|
||||
// Indicates whether the viewport is currently in the lead-out section (after all months)
|
||||
let isInLeadOutSection = $state(false);
|
||||
|
||||
const isEmpty = $derived(timelineManager.isInitialized && timelineManager.months.length === 0);
|
||||
const maxMd = $derived(mobileDevice.maxMd);
|
||||
const usingMobileDevice = $derived(mobileDevice.pointerCoarse);
|
||||
|
||||
$effect(() => {
|
||||
const layoutOptions = maxMd
|
||||
? {
|
||||
rowHeight: 100,
|
||||
headerHeight: 32,
|
||||
}
|
||||
: {
|
||||
rowHeight: 235,
|
||||
headerHeight: 48,
|
||||
};
|
||||
timelineManager.setLayoutOptions(layoutOptions);
|
||||
});
|
||||
|
||||
const scrollTo = (top: number) => {
|
||||
if (element) {
|
||||
element.scrollTo({ top });
|
||||
}
|
||||
};
|
||||
const scrollTop = (top: number) => {
|
||||
if (element) {
|
||||
element.scrollTop = top;
|
||||
}
|
||||
};
|
||||
const scrollBy = (y: number) => {
|
||||
if (element) {
|
||||
element.scrollBy(0, y);
|
||||
}
|
||||
};
|
||||
const scrollToTop = () => {
|
||||
scrollTo(0);
|
||||
};
|
||||
|
||||
const handleTriggeredScrollCompensation = (compensation: { heightDelta?: number; scrollTop?: number }) => {
|
||||
const { heightDelta, scrollTop } = compensation;
|
||||
if (heightDelta !== undefined) {
|
||||
scrollBy(heightDelta);
|
||||
} else if (scrollTop !== undefined) {
|
||||
scrollTo(scrollTop);
|
||||
}
|
||||
timelineManager.clearScrollCompensation();
|
||||
};
|
||||
|
||||
const getAssetHeight = (assetId: string, monthGroup: MonthGroup) => {
|
||||
// the following method may trigger any layouts, so need to
|
||||
// handle any scroll compensation that may have been set
|
||||
const height = monthGroup!.findAssetAbsolutePosition(assetId);
|
||||
|
||||
// this is in a while loop, since scrollCompensations invoke scrolls
|
||||
// which may load months, triggering more scrollCompensations. Call
|
||||
// this in a loop, until no more layouts occur.
|
||||
while (timelineManager.scrollCompensation.monthGroup) {
|
||||
handleTriggeredScrollCompensation(timelineManager.scrollCompensation);
|
||||
}
|
||||
return height;
|
||||
};
|
||||
|
||||
const assetIsVisible = (assetTop: number): boolean => {
|
||||
if (!element) {
|
||||
return false;
|
||||
}
|
||||
|
||||
const { clientHeight, scrollTop } = element;
|
||||
return assetTop >= scrollTop && assetTop < scrollTop + clientHeight;
|
||||
};
|
||||
|
||||
const scrollToAssetId = async (assetId: string) => {
|
||||
const monthGroup = await timelineManager.findMonthGroupForAsset(assetId);
|
||||
if (!monthGroup) {
|
||||
return false;
|
||||
}
|
||||
|
||||
const height = getAssetHeight(assetId, monthGroup);
|
||||
|
||||
// If the asset is already visible, then don't scroll.
|
||||
if (assetIsVisible(height)) {
|
||||
return true;
|
||||
}
|
||||
|
||||
scrollTo(height);
|
||||
updateSlidingWindow();
|
||||
return true;
|
||||
};
|
||||
|
||||
const scrollToAsset = (asset: TimelineAsset) => {
|
||||
const monthGroup = timelineManager.getMonthGroupByAssetId(asset.id);
|
||||
if (!monthGroup) {
|
||||
return false;
|
||||
}
|
||||
const height = getAssetHeight(asset.id, monthGroup);
|
||||
scrollTo(height);
|
||||
updateSlidingWindow();
|
||||
return true;
|
||||
};
|
||||
|
||||
const completeNav = async () => {
|
||||
const scrollTarget = $gridScrollTarget?.at;
|
||||
let scrolled = false;
|
||||
if (scrollTarget) {
|
||||
scrolled = await scrollToAssetId(scrollTarget);
|
||||
}
|
||||
if (!scrolled) {
|
||||
// if the asset is not found, scroll to the top
|
||||
scrollToTop();
|
||||
}
|
||||
showSkeleton = false;
|
||||
};
|
||||
|
||||
beforeNavigate(() => (timelineManager.suspendTransitions = true));
|
||||
|
||||
afterNavigate((nav) => {
|
||||
const { complete } = nav;
|
||||
complete.then(completeNav, completeNav);
|
||||
});
|
||||
|
||||
const handleAfterUpdate = (payload: UpdatePayload) => {
|
||||
const timelineUpdate = payload.updates.some(
|
||||
(update) => update.path.endsWith('Timeline.svelte') || update.path.endsWith('assets-store.ts'),
|
||||
);
|
||||
|
||||
if (timelineUpdate) {
|
||||
setTimeout(() => {
|
||||
const asset = $page.url.searchParams.get('at');
|
||||
if (asset) {
|
||||
$gridScrollTarget = { at: asset };
|
||||
void navigate(
|
||||
{ targetRoute: 'current', assetId: null, assetGridRouteSearchParams: $gridScrollTarget },
|
||||
{ replaceState: true, forceNavigate: true },
|
||||
);
|
||||
} else {
|
||||
scrollToTop();
|
||||
}
|
||||
showSkeleton = false;
|
||||
}, 500);
|
||||
}
|
||||
};
|
||||
|
||||
const handleBeforeUpdate = (payload: UpdatePayload) => {
|
||||
const timelineUpdate = payload.updates.some((update) => update.path.endsWith('Timeline.svelte'));
|
||||
if (timelineUpdate) {
|
||||
timelineManager.destroy();
|
||||
}
|
||||
};
|
||||
|
||||
const updateIsScrolling = () => (timelineManager.scrolling = true);
|
||||
// note: don't throttle, debounch, or otherwise do this function async - it causes flicker
|
||||
const updateSlidingWindow = () => timelineManager.updateSlidingWindow(element?.scrollTop || 0);
|
||||
|
||||
const topSectionResizeObserver: OnResizeCallback = ({ height }) => (timelineManager.topSectionHeight = height);
|
||||
|
||||
onMount(() => {
|
||||
if (!enableRouting) {
|
||||
showSkeleton = false;
|
||||
}
|
||||
});
|
||||
|
||||
const getMaxScrollPercent = () => {
|
||||
const totalHeight = timelineManager.timelineHeight + bottomSectionHeight + timelineManager.topSectionHeight;
|
||||
return (totalHeight - timelineManager.viewportHeight) / totalHeight;
|
||||
};
|
||||
|
||||
const getMaxScroll = () => {
|
||||
if (!element || !timelineElement) {
|
||||
return 0;
|
||||
}
|
||||
return (
|
||||
timelineManager.topSectionHeight + bottomSectionHeight + (timelineElement.clientHeight - element.clientHeight)
|
||||
);
|
||||
};
|
||||
|
||||
const scrollToMonthGroupAndOffset = (monthGroup: MonthGroup, monthGroupScrollPercent: number) => {
|
||||
const topOffset = monthGroup.top;
|
||||
const maxScrollPercent = getMaxScrollPercent();
|
||||
const delta = monthGroup.height * monthGroupScrollPercent;
|
||||
const scrollToTop = (topOffset + delta) * maxScrollPercent;
|
||||
|
||||
scrollTop(scrollToTop);
|
||||
};
|
||||
|
||||
// note: don't throttle, debounce, or otherwise make this function async - it causes flicker
|
||||
// this function scrolls the timeline to the specified month group and offset, based on scrubber interaction
|
||||
const onScrub: ScrubberListener = (scrubberData) => {
|
||||
const { scrubberMonth, overallScrollPercent, scrubberMonthScrollPercent } = scrubberData;
|
||||
|
||||
if (!scrubberMonth || timelineManager.timelineHeight < timelineManager.viewportHeight * 2) {
|
||||
// edge case - scroll limited due to size of content, must adjust - use use the overall percent instead
|
||||
const maxScroll = getMaxScroll();
|
||||
const offset = maxScroll * overallScrollPercent;
|
||||
scrollTop(offset);
|
||||
} else {
|
||||
const monthGroup = timelineManager.months.find(
|
||||
({ yearMonth: { year, month } }) => year === scrubberMonth.year && month === scrubberMonth.month,
|
||||
);
|
||||
if (!monthGroup) {
|
||||
return;
|
||||
}
|
||||
scrollToMonthGroupAndOffset(monthGroup, scrubberMonthScrollPercent);
|
||||
}
|
||||
};
|
||||
|
||||
// note: don't throttle, debounch, or otherwise make this function async - it causes flicker
|
||||
const handleTimelineScroll = () => {
|
||||
isInLeadOutSection = false;
|
||||
|
||||
if (!element) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (timelineManager.timelineHeight < timelineManager.viewportHeight * 2) {
|
||||
// edge case - scroll limited due to size of content, must adjust - use the overall percent instead
|
||||
const maxScroll = getMaxScroll();
|
||||
timelineScrollPercent = Math.min(1, element.scrollTop / maxScroll);
|
||||
|
||||
viewportTopMonth = undefined;
|
||||
viewportTopMonthScrollPercent = 0;
|
||||
} else {
|
||||
let top = element.scrollTop;
|
||||
if (top < timelineManager.topSectionHeight) {
|
||||
// in the lead-in area
|
||||
viewportTopMonth = undefined;
|
||||
viewportTopMonthScrollPercent = 0;
|
||||
const maxScroll = getMaxScroll();
|
||||
|
||||
timelineScrollPercent = Math.min(1, element.scrollTop / maxScroll);
|
||||
return;
|
||||
}
|
||||
|
||||
let maxScrollPercent = getMaxScrollPercent();
|
||||
let found = false;
|
||||
|
||||
const monthsLength = timelineManager.months.length;
|
||||
for (let i = -1; i < monthsLength + 1; i++) {
|
||||
let monthGroup: TimelineYearMonth | undefined;
|
||||
let monthGroupHeight = 0;
|
||||
if (i === -1) {
|
||||
// lead-in
|
||||
monthGroupHeight = timelineManager.topSectionHeight;
|
||||
} else if (i === monthsLength) {
|
||||
// lead-out
|
||||
monthGroupHeight = bottomSectionHeight;
|
||||
} else {
|
||||
monthGroup = timelineManager.months[i].yearMonth;
|
||||
monthGroupHeight = timelineManager.months[i].height;
|
||||
}
|
||||
|
||||
let next = top - monthGroupHeight * maxScrollPercent;
|
||||
// instead of checking for < 0, add a little wiggle room for subpixel resolution
|
||||
if (next < -1 && monthGroup) {
|
||||
viewportTopMonth = monthGroup;
|
||||
|
||||
// allowing next to be at least 1 may cause percent to go negative, so ensure positive percentage
|
||||
viewportTopMonthScrollPercent = Math.max(0, top / (monthGroupHeight * maxScrollPercent));
|
||||
|
||||
// compensate for lost precision/rounding errors advance to the next bucket, if present
|
||||
if (viewportTopMonthScrollPercent > 0.9999 && i + 1 < monthsLength - 1) {
|
||||
viewportTopMonth = timelineManager.months[i + 1].yearMonth;
|
||||
viewportTopMonthScrollPercent = 0;
|
||||
}
|
||||
|
||||
found = true;
|
||||
break;
|
||||
}
|
||||
top = next;
|
||||
}
|
||||
if (!found) {
|
||||
isInLeadOutSection = true;
|
||||
viewportTopMonth = undefined;
|
||||
viewportTopMonthScrollPercent = 0;
|
||||
timelineScrollPercent = 1;
|
||||
}
|
||||
}
|
||||
};
|
||||
let viewer: PhotostreamWithScrubber | undefined = $state();
|
||||
let showSkeleton: boolean = $state(true);
|
||||
|
||||
$effect(() => {
|
||||
if ($showAssetViewer) {
|
||||
|
|
@ -387,168 +84,87 @@
|
|||
});
|
||||
</script>
|
||||
|
||||
<HotModuleReload onAfterUpdate={handleAfterUpdate} onBeforeUpdate={handleBeforeUpdate} />
|
||||
|
||||
<TimelineKeyboardActions
|
||||
scrollToAsset={(asset) => scrollToAsset(asset) ?? false}
|
||||
scrollToAsset={(asset) => viewer?.scrollToAsset(asset) ?? false}
|
||||
{timelineManager}
|
||||
{assetInteraction}
|
||||
bind:isShowDeleteConfirmation
|
||||
{onEscape}
|
||||
/>
|
||||
|
||||
{#if timelineManager.months.length > 0}
|
||||
<Scrubber
|
||||
{timelineManager}
|
||||
height={timelineManager.viewportHeight}
|
||||
timelineTopOffset={timelineManager.topSectionHeight}
|
||||
timelineBottomOffset={bottomSectionHeight}
|
||||
{isInLeadOutSection}
|
||||
{timelineScrollPercent}
|
||||
{viewportTopMonthScrollPercent}
|
||||
{viewportTopMonth}
|
||||
{onScrub}
|
||||
bind:scrubberWidth
|
||||
/>
|
||||
{/if}
|
||||
|
||||
<!-- Right margin MUST be equal to the width of scrubber -->
|
||||
<section
|
||||
id="asset-grid"
|
||||
class={['scrollbar-hidden h-full overflow-y-auto outline-none', { 'm-0': isEmpty }, { 'ms-0': !isEmpty }]}
|
||||
style:margin-right={(usingMobileDevice ? 0 : scrubberWidth) + 'px'}
|
||||
tabindex="-1"
|
||||
bind:clientHeight={timelineManager.viewportHeight}
|
||||
bind:clientWidth={null, (v: number) => ((timelineManager.viewportWidth = v), updateSlidingWindow())}
|
||||
bind:this={element}
|
||||
onscroll={() => (handleTimelineScroll(), updateSlidingWindow(), updateIsScrolling())}
|
||||
<PhotostreamWithScrubber
|
||||
bind:this={viewer}
|
||||
{enableRouting}
|
||||
{timelineManager}
|
||||
{isShowDeleteConfirmation}
|
||||
{showSkeleton}
|
||||
{children}
|
||||
{empty}
|
||||
>
|
||||
<section
|
||||
bind:this={timelineElement}
|
||||
id="virtual-timeline"
|
||||
class:invisible={showSkeleton}
|
||||
style:height={timelineManager.timelineHeight + 'px'}
|
||||
>
|
||||
<section
|
||||
use:resizeObserver={topSectionResizeObserver}
|
||||
class:invisible={showSkeleton}
|
||||
style:position="absolute"
|
||||
style:left="0"
|
||||
style:right="0"
|
||||
{#snippet skeleton({ segment })}
|
||||
<Skeleton
|
||||
height={segment.height - segment.timelineManager.headerHeight}
|
||||
title={(segment as MonthGroup).monthGroupTitle}
|
||||
/>
|
||||
{/snippet}
|
||||
{#snippet segment({ segment, onScrollCompensationMonthInDOM })}
|
||||
<SelectableSegment
|
||||
{segment}
|
||||
{onScrollCompensationMonthInDOM}
|
||||
{timelineManager}
|
||||
{assetInteraction}
|
||||
{isSelectionMode}
|
||||
{singleSelect}
|
||||
{onAssetOpen}
|
||||
{onAssetSelect}
|
||||
>
|
||||
{@render children?.()}
|
||||
{#if isEmpty}
|
||||
<!-- (optional) empty placeholder -->
|
||||
{@render empty?.()}
|
||||
{/if}
|
||||
</section>
|
||||
|
||||
{#each timelineManager.months as monthGroup (monthGroup.viewId)}
|
||||
{@const display = monthGroup.intersecting}
|
||||
{@const absoluteHeight = monthGroup.top}
|
||||
|
||||
{#if !monthGroup.isLoaded}
|
||||
<div
|
||||
style:height={monthGroup.height + 'px'}
|
||||
style:position="absolute"
|
||||
style:transform={`translate3d(0,${absoluteHeight}px,0)`}
|
||||
style:width="100%"
|
||||
>
|
||||
<Skeleton
|
||||
height={monthGroup.height - monthGroup.timelineManager.headerHeight}
|
||||
title={monthGroup.monthGroupTitle}
|
||||
/>
|
||||
</div>
|
||||
{:else if display}
|
||||
<div
|
||||
class="month-group"
|
||||
style:height={monthGroup.height + 'px'}
|
||||
style:position="absolute"
|
||||
style:transform={`translate3d(0,${absoluteHeight}px,0)`}
|
||||
style:width="100%"
|
||||
>
|
||||
<SelectableSegment
|
||||
segment={monthGroup}
|
||||
onScrollCompensationMonthInDOM={handleTriggeredScrollCompensation}
|
||||
{timelineManager}
|
||||
{assetInteraction}
|
||||
{isSelectionMode}
|
||||
{singleSelect}
|
||||
{onAssetOpen}
|
||||
{onAssetSelect}
|
||||
>
|
||||
{#snippet content({ onAssetOpen, onAssetSelect, onAssetHover })}
|
||||
<SelectableDay {assetInteraction} {onAssetSelect}>
|
||||
{#snippet content({ onDayGroupSelect, onDayGroupAssetSelect })}
|
||||
<MonthSegment
|
||||
{assetInteraction}
|
||||
{customThumbnailLayout}
|
||||
{singleSelect}
|
||||
{monthGroup}
|
||||
{timelineManager}
|
||||
{onDayGroupSelect}
|
||||
>
|
||||
{#snippet thumbnail({ asset, position, dayGroup, groupIndex })}
|
||||
{@const isAssetSelectionCandidate = assetInteraction.hasSelectionCandidate(asset.id)}
|
||||
{@const isAssetSelected =
|
||||
assetInteraction.hasSelectedAsset(asset.id) || timelineManager.albumAssets.has(asset.id)}
|
||||
{@const isAssetDisabled = timelineManager.albumAssets.has(asset.id)}
|
||||
<Thumbnail
|
||||
showStackedIcon={withStacked}
|
||||
{showArchiveIcon}
|
||||
{asset}
|
||||
{groupIndex}
|
||||
onClick={() => onAssetOpen(asset)}
|
||||
onSelect={() => onDayGroupAssetSelect(dayGroup, asset)}
|
||||
onMouseEvent={(isMouseOver) => {
|
||||
if (isMouseOver) {
|
||||
onAssetHover(asset);
|
||||
} else {
|
||||
onAssetHover(null);
|
||||
}
|
||||
}}
|
||||
selected={isAssetSelected}
|
||||
selectionCandidate={isAssetSelectionCandidate}
|
||||
disabled={isAssetDisabled}
|
||||
thumbnailWidth={position.width}
|
||||
thumbnailHeight={position.height}
|
||||
/>
|
||||
{/snippet}
|
||||
</MonthSegment>
|
||||
{/snippet}
|
||||
</SelectableDay>
|
||||
{/snippet}
|
||||
</SelectableSegment>
|
||||
</div>
|
||||
{/if}
|
||||
{/each}
|
||||
<!-- spacer for leadout -->
|
||||
<div
|
||||
class="h-[60px]"
|
||||
style:position="absolute"
|
||||
style:left="0"
|
||||
style:right="0"
|
||||
style:transform={`translate3d(0,${timelineManager.timelineHeight}px,0)`}
|
||||
></div>
|
||||
</section>
|
||||
</section>
|
||||
{#snippet content({ onAssetOpen, onAssetSelect, onAssetHover })}
|
||||
<SelectableDay {assetInteraction} {onAssetSelect}>
|
||||
{#snippet content({ onDayGroupSelect, onDayGroupAssetSelect })}
|
||||
<MonthSegment
|
||||
{assetInteraction}
|
||||
{customThumbnailLayout}
|
||||
{singleSelect}
|
||||
monthGroup={segment as MonthGroup}
|
||||
{timelineManager}
|
||||
{onDayGroupSelect}
|
||||
>
|
||||
{#snippet thumbnail({ asset, position, dayGroup, groupIndex })}
|
||||
{@const isAssetSelectionCandidate = assetInteraction.hasSelectionCandidate(asset.id)}
|
||||
{@const isAssetSelected =
|
||||
assetInteraction.hasSelectedAsset(asset.id) || timelineManager.albumAssets.has(asset.id)}
|
||||
{@const isAssetDisabled = timelineManager.albumAssets.has(asset.id)}
|
||||
<Thumbnail
|
||||
showStackedIcon={withStacked}
|
||||
{showArchiveIcon}
|
||||
{asset}
|
||||
{groupIndex}
|
||||
onClick={() => onAssetOpen(asset)}
|
||||
onSelect={() => onDayGroupAssetSelect(dayGroup, asset)}
|
||||
onMouseEvent={(isMouseOver) => {
|
||||
if (isMouseOver) {
|
||||
onAssetHover(asset);
|
||||
} else {
|
||||
onAssetHover(null);
|
||||
}
|
||||
}}
|
||||
selected={isAssetSelected}
|
||||
selectionCandidate={isAssetSelectionCandidate}
|
||||
disabled={isAssetDisabled}
|
||||
thumbnailWidth={position.width}
|
||||
thumbnailHeight={position.height}
|
||||
/>
|
||||
{/snippet}
|
||||
</MonthSegment>
|
||||
{/snippet}
|
||||
</SelectableDay>
|
||||
{/snippet}
|
||||
</SelectableSegment>
|
||||
{/snippet}
|
||||
</PhotostreamWithScrubber>
|
||||
|
||||
<Portal target="body">
|
||||
{#if $showAssetViewer}
|
||||
<TimelineAssetViewer bind:showSkeleton {timelineManager} {removeAction} {withStacked} {isShared} {album} {person} />
|
||||
{/if}
|
||||
</Portal>
|
||||
|
||||
<style>
|
||||
#asset-grid {
|
||||
contain: strict;
|
||||
scrollbar-width: none;
|
||||
}
|
||||
|
||||
.month-group {
|
||||
contain: layout size paint;
|
||||
transform-style: flat;
|
||||
backface-visibility: hidden;
|
||||
transform-origin: center center;
|
||||
}
|
||||
</style>
|
||||
|
|
|
|||
|
|
@ -143,3 +143,79 @@ export function findMonthGroupForDate(timelineManager: TimelineManager, targetYe
|
|||
}
|
||||
}
|
||||
}
|
||||
|
||||
export interface MonthGroupForSearch {
|
||||
yearMonth: TimelineYearMonth;
|
||||
top: number;
|
||||
height: number;
|
||||
}
|
||||
|
||||
export interface BinarySearchResult {
|
||||
month: TimelineYearMonth;
|
||||
monthScrollPercent: number;
|
||||
}
|
||||
|
||||
export function findMonthAtScrollPosition(
|
||||
months: MonthGroupForSearch[],
|
||||
scrollPosition: number,
|
||||
maxScrollPercent: number,
|
||||
): BinarySearchResult | null {
|
||||
const SUBPIXEL_TOLERANCE = -1; // Tolerance for scroll position checks
|
||||
const NEAR_END_THRESHOLD = 0.9999; // Threshold for detecting near-end of month
|
||||
|
||||
if (months.length === 0) {
|
||||
return null;
|
||||
}
|
||||
|
||||
// Check if we're before the first month
|
||||
const firstMonthTop = months[0].top * maxScrollPercent;
|
||||
if (scrollPosition < firstMonthTop - SUBPIXEL_TOLERANCE) {
|
||||
return null;
|
||||
}
|
||||
|
||||
// Check if we're after the last month
|
||||
const lastMonth = months.at(-1)!;
|
||||
const lastMonthBottom = (lastMonth.top + lastMonth.height) * maxScrollPercent;
|
||||
if (scrollPosition >= lastMonthBottom - SUBPIXEL_TOLERANCE) {
|
||||
return null;
|
||||
}
|
||||
|
||||
// Binary search to find the month containing the scroll position
|
||||
let left = 0;
|
||||
let right = months.length - 1;
|
||||
|
||||
while (left <= right) {
|
||||
const mid = Math.floor((left + right) / 2);
|
||||
const month = months[mid];
|
||||
const monthTop = month.top * maxScrollPercent;
|
||||
const monthBottom = monthTop + month.height * maxScrollPercent;
|
||||
|
||||
if (scrollPosition >= monthTop - SUBPIXEL_TOLERANCE && scrollPosition < monthBottom - SUBPIXEL_TOLERANCE) {
|
||||
// Found the month containing the scroll position
|
||||
const distanceIntoMonth = scrollPosition - monthTop;
|
||||
const monthScrollPercent = Math.max(0, distanceIntoMonth / (month.height * maxScrollPercent));
|
||||
|
||||
// Handle month boundary edge case
|
||||
if (monthScrollPercent > NEAR_END_THRESHOLD && mid < months.length - 1) {
|
||||
return {
|
||||
month: months[mid + 1].yearMonth,
|
||||
monthScrollPercent: 0,
|
||||
};
|
||||
}
|
||||
|
||||
return {
|
||||
month: month.yearMonth,
|
||||
monthScrollPercent,
|
||||
};
|
||||
}
|
||||
|
||||
if (scrollPosition < monthTop) {
|
||||
right = mid - 1;
|
||||
} else {
|
||||
left = mid + 1;
|
||||
}
|
||||
}
|
||||
|
||||
// Shouldn't reach here, but return null if we do
|
||||
return null;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -24,11 +24,19 @@ export type TimelineDateTime = TimelineDate & {
|
|||
millisecond: number;
|
||||
};
|
||||
|
||||
export type ScrubberListener = (scrubberData: {
|
||||
export type ScrubberData = {
|
||||
scrubberMonth: { year: number; month: number };
|
||||
overallScrollPercent: number;
|
||||
scrubberMonthScrollPercent: number;
|
||||
}) => void | Promise<void>;
|
||||
};
|
||||
|
||||
export type ScrubberListener = (scrubberData: ScrubberData) => void | Promise<void>;
|
||||
|
||||
export type ScrubberDataWithScrollTo = ScrubberData & {
|
||||
scrollToFunction: (top: number) => void;
|
||||
};
|
||||
|
||||
export type ScrubberListenerWithScrollTo = (scrubberData: ScrubberDataWithScrollTo) => void | Promise<void>;
|
||||
|
||||
// used for AssetResponseDto.dateTimeOriginal, amongst others
|
||||
export const fromISODateTime = (isoDateTime: string, timeZone: string): DateTime<true> =>
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue