svelte-motion
Version:
Svelte animation library based on the React library framer-motion.
209 lines (206 loc) • 8.47 kB
JavaScript
/**
based on framer-motion@4.1.15,
Copyright (c) 2018 Framer B.V.
*/
import {fixed} from '../../utils/fix-process-env';
import { __rest, __spreadArray, __read } from 'tslib';
import { inertia, animate } from 'popmotion';
import { secondsToMilliseconds } from '../../utils/time-conversion.js';
import { isEasingArray, easingDefinitionToFunction } from './easing.js';
import { isAnimatable } from './is-animatable.js';
import { getDefaultTransition } from './default-transitions.js';
import { warning } from 'hey-listen';
import { getAnimatableNone } from '../../render/dom/value-types/animatable-none.js';
/**
* Decide whether a transition is defined on a given Transition.
* This filters out orchestration options and returns true
* if any options are left.
*/
function isTransitionDefined(_a) {
_a.when; _a.delay; _a.delayChildren; _a.staggerChildren; _a.staggerDirection; _a.repeat; _a.repeatType; _a.repeatDelay; _a.from; var transition = __rest(_a, ["when", "delay", "delayChildren", "staggerChildren", "staggerDirection", "repeat", "repeatType", "repeatDelay", "from"]);
return !!Object.keys(transition).length;
}
var legacyRepeatWarning = false;
/**
* Convert Framer Motion's Transition type into Popmotion-compatible options.
*/
function convertTransitionToAnimationOptions(_a) {
var ease = _a.ease, times = _a.times, yoyo = _a.yoyo, flip = _a.flip, loop = _a.loop, transition = __rest(_a, ["ease", "times", "yoyo", "flip", "loop"]);
var options = Object.assign({}, transition);
if (times)
options["offset"] = times;
/**
* Convert any existing durations from seconds to milliseconds
*/
if (transition.duration)
options["duration"] = secondsToMilliseconds(transition.duration);
if (transition.repeatDelay)
options.repeatDelay = secondsToMilliseconds(transition.repeatDelay);
/**
* Map easing names to Popmotion's easing functions
*/
if (ease) {
options["ease"] = isEasingArray(ease)
? ease.map(easingDefinitionToFunction)
: easingDefinitionToFunction(ease);
}
/**
* Support legacy transition API
*/
if (transition.type === "tween")
options.type = "keyframes";
/**
* TODO: These options are officially removed from the API.
*/
if (yoyo || loop || flip) {
warning(!legacyRepeatWarning, "yoyo, loop and flip have been removed from the API. Replace with repeat and repeatType options.");
legacyRepeatWarning = true;
if (yoyo) {
options.repeatType = "reverse";
}
else if (loop) {
options.repeatType = "loop";
}
else if (flip) {
options.repeatType = "mirror";
}
options.repeat = loop || yoyo || flip || transition.repeat;
}
/**
* TODO: Popmotion 9 has the ability to automatically detect whether to use
* a keyframes or spring animation, but does so by detecting velocity and other spring options.
* It'd be good to introduce a similar thing here.
*/
if (transition.type !== "spring")
options.type = "keyframes";
return options;
}
/**
* Get the delay for a value by checking Transition with decreasing specificity.
*/
function getDelayFromTransition(transition, key) {
var _a;
var valueTransition = getValueTransition(transition, key) || {};
return (_a = valueTransition.delay) !== null && _a !== void 0 ? _a : 0;
}
function hydrateKeyframes(options) {
if (Array.isArray(options.to) && options.to[0] === null) {
options.to = __spreadArray([], __read(options.to));
options.to[0] = options.from;
}
return options;
}
function getPopmotionAnimationOptions(transition, options, key) {
var _a;
if (Array.isArray(options.to)) {
(_a = transition.duration) !== null && _a !== void 0 ? _a : (transition.duration = 0.8);
}
hydrateKeyframes(options);
/**
* Get a default transition if none is determined to be defined.
*/
if (!isTransitionDefined(transition)) {
transition = Object.assign(Object.assign({}, transition), getDefaultTransition(key, options.to));
}
return Object.assign(Object.assign({}, options), convertTransitionToAnimationOptions(transition));
}
/**
*
*/
function getAnimation(key, value, target, transition, onComplete) {
var _a;
var valueTransition = getValueTransition(transition, key);
var origin = (_a = valueTransition.from) !== null && _a !== void 0 ? _a : value.get();
var isTargetAnimatable = isAnimatable(key, target);
if (origin === "none" && isTargetAnimatable && typeof target === "string") {
/**
* If we're trying to animate from "none", try and get an animatable version
* of the target. This could be improved to work both ways.
*/
origin = getAnimatableNone(key, target);
}
else if (isZero(origin) && typeof target === "string") {
origin = getZeroUnit(target);
}
else if (!Array.isArray(target) &&
isZero(target) &&
typeof origin === "string") {
target = getZeroUnit(origin);
}
var isOriginAnimatable = isAnimatable(key, origin);
warning(isOriginAnimatable === isTargetAnimatable, "You are trying to animate " + key + " from \"" + origin + "\" to \"" + target + "\". " + origin + " is not an animatable value - to enable this animation set " + origin + " to a value animatable to " + target + " via the `style` property.");
function start() {
var options = {
from: origin,
to: target,
velocity: value.getVelocity(),
onComplete: onComplete,
onUpdate: function (v) { return value.set(v); },
};
return valueTransition.type === "inertia" ||
valueTransition.type === "decay"
? inertia(Object.assign(Object.assign({}, options), valueTransition))
: animate(Object.assign(Object.assign({}, getPopmotionAnimationOptions(valueTransition, options, key)), { onUpdate: function (v) {
var _a;
options.onUpdate(v);
(_a = valueTransition.onUpdate) === null || _a === void 0 ? void 0 : _a.call(valueTransition, v);
}, onComplete: function () {
var _a;
options.onComplete();
(_a = valueTransition.onComplete) === null || _a === void 0 ? void 0 : _a.call(valueTransition);
} }));
}
function set() {
var _a;
value.set(target);
onComplete();
(_a = valueTransition === null || valueTransition === void 0 ? void 0 : valueTransition.onComplete) === null || _a === void 0 ? void 0 : _a.call(valueTransition);
return { stop: function () { } };
}
return !isOriginAnimatable ||
!isTargetAnimatable ||
valueTransition.type === false
? set
: start;
}
function isZero(value) {
return (value === 0 ||
(typeof value === "string" &&
parseFloat(value) === 0 &&
value.indexOf(" ") === -1));
}
function getZeroUnit(potentialUnitType) {
return typeof potentialUnitType === "number"
? 0
: getAnimatableNone("", potentialUnitType);
}
function getValueTransition(transition, key) {
return transition[key] || transition["default"] || transition;
}
/**
* Start animation on a MotionValue. This function is an interface between
* Framer Motion and Popmotion
*
* @internal
*/
function startAnimation(key, value, target, transition) {
if (transition === void 0) { transition = {}; }
return value.start(function (onComplete) {
var delayTimer;
var controls;
var animation = getAnimation(key, value, target, transition, onComplete);
var delay = getDelayFromTransition(transition, key);
var start = function () { return (controls = animation()); };
if (delay) {
delayTimer = setTimeout(start, secondsToMilliseconds(delay));
}
else {
start();
}
return function () {
clearTimeout(delayTimer);
controls === null || controls === void 0 ? void 0 : controls.stop();
};
});
}
export { convertTransitionToAnimationOptions, getDelayFromTransition, getPopmotionAnimationOptions, getValueTransition, getZeroUnit, hydrateKeyframes, isTransitionDefined, isZero, startAnimation };