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Diffstat (limited to 'docs/src/templates/assets/javascripts/browser/element/offset/content/index.ts')
| -rw-r--r-- | docs/src/templates/assets/javascripts/browser/element/offset/content/index.ts | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/docs/src/templates/assets/javascripts/browser/element/offset/content/index.ts b/docs/src/templates/assets/javascripts/browser/element/offset/content/index.ts new file mode 100644 index 00000000..557301a6 --- /dev/null +++ b/docs/src/templates/assets/javascripts/browser/element/offset/content/index.ts @@ -0,0 +1,76 @@ +/* + * Copyright (c) 2016-2023 Martin Donath <martin.donath@squidfunk.com> + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +import { + Observable, + animationFrameScheduler, + auditTime, + fromEvent, + map, + merge, + startWith +} from "rxjs" + +import { ElementOffset } from "../_" + +/* ---------------------------------------------------------------------------- + * Functions + * ------------------------------------------------------------------------- */ + +/** + * Retrieve element content offset (= scroll offset) + * + * @param el - Element + * + * @returns Element content offset + */ +export function getElementContentOffset( + el: HTMLElement +): ElementOffset { + return { + x: el.scrollLeft, + y: el.scrollTop + } +} + +/* ------------------------------------------------------------------------- */ + +/** + * Watch element content offset + * + * @param el - Element + * + * @returns Element content offset observable + */ +export function watchElementContentOffset( + el: HTMLElement +): Observable<ElementOffset> { + return merge( + fromEvent(el, "scroll"), + fromEvent(window, "resize") + ) + .pipe( + auditTime(0, animationFrameScheduler), + map(() => getElementContentOffset(el)), + startWith(getElementContentOffset(el)) + ) +} |
