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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 4x 4x 4x 2x 2x 2x 2x 2x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 4x 8x 8x 6x 6x 6x 6x 6x 6x 6x 6x 4x 4x 4x 4x 4x 4x 4x 4x 2x 2x 2x 2x 2x 2x 8x 8x | import { render_effect } from '../../../reactivity/effects.js';
import { listen } from './shared.js';
/**
* @param {'x' | 'y'} type
* @param {() => number} get_value
* @param {(value: number) => void} update
* @returns {void}
*/
export function bind_window_scroll(type, get_value, update) {
var is_scrolling_x = type === 'x';
var target_handler = () => {
scrolling = true;
clearTimeout(timeout);
timeout = setTimeout(clear, 100); // TODO use scrollend event if supported (or when supported everywhere?)
update(window[is_scrolling_x ? 'scrollX' : 'scrollY']);
};
addEventListener('scroll', target_handler, {
passive: true
});
var latest_value = 0;
var scrolling = false;
/** @type {ReturnType<typeof setTimeout>} */
var timeout;
var clear = () => {
scrolling = false;
};
render_effect(() => {
latest_value = get_value() || 0;
if (!scrolling) {
scrolling = true;
clearTimeout(timeout);
if (is_scrolling_x) {
scrollTo(latest_value, window.scrollY);
} else {
scrollTo(window.scrollX, latest_value);
}
timeout = setTimeout(clear, 100);
}
});
render_effect(() => {
return () => {
removeEventListener('scroll', target_handler);
};
});
}
/**
* @param {'innerWidth' | 'innerHeight' | 'outerWidth' | 'outerHeight'} type
* @param {(size: number) => void} update
*/
export function bind_window_size(type, update) {
listen(window, ['resize'], () => update(window[type]));
}
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