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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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | /** @import { FlipParams, AnimationConfig } from './public.js' */
import { cubicOut } from '../easing/index.js';
/**
* The flip function calculates the start and end position of an element and animates between them, translating the x and y values.
* `flip` stands for [First, Last, Invert, Play](https://aerotwist.com/blog/flip-your-animations/).
*
* https://svelte.dev/docs/svelte-animate#flip
* @param {Element} node
* @param {{ from: DOMRect; to: DOMRect }} fromTo
* @param {FlipParams} params
* @returns {AnimationConfig}
*/
export function flip(node, { from, to }, params = {}) {
var style = getComputedStyle(node);
var zoom = get_zoom(node); // https://drafts.csswg.org/css-viewport/#effective-zoom
var transform = style.transform === 'none' ? '' : style.transform;
var [ox, oy] = style.transformOrigin.split(' ').map(parseFloat);
var dsx = from.width / to.width;
var dsy = from.height / to.height;
var dx = (from.left + dsx * ox - (to.left + ox)) / zoom;
var dy = (from.top + dsy * oy - (to.top + oy)) / zoom;
var { delay = 0, duration = (d) => Math.sqrt(d) * 120, easing = cubicOut } = params;
return {
delay,
duration: typeof duration === 'function' ? duration(Math.sqrt(dx * dx + dy * dy)) : duration,
easing,
css: (t, u) => {
var x = u * dx;
var y = u * dy;
var sx = t + u * dsx;
var sy = t + u * dsy;
return `transform: ${transform} scale(${sx}, ${sy}) translate(${x}px, ${y}px);`;
}
};
}
/**
* @param {Element} element
*/
function get_zoom(element) {
if ('currentCSSZoom' in element) {
return /** @type {number} */ (element.currentCSSZoom);
}
/** @type {Element | null} */
var current = element;
var zoom = 1;
while (current !== null) {
zoom *= +getComputedStyle(current).zoom;
current = /** @type {Element | null} */ (current.parentElement);
}
return zoom;
}
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