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feat(translate): adds new translate motion
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,11 @@ | ||
| import * as React from 'react'; | ||
| import { INVERSE_TRANSLATE_CLASS_NAME } from './index'; | ||
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| interface InverseTranslateProps { | ||
| children: (opts: { className: string }) => React.ReactElement; | ||
| } | ||
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| const InverseTranslate: React.FC<InverseTranslateProps> = (props: InverseTranslateProps) => | ||
| props.children({ className: INVERSE_TRANSLATE_CLASS_NAME }); | ||
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| export default InverseTranslate; |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,72 @@ | ||
| --- | ||
| name: Translate | ||
| route: /translate | ||
| menu: Focal motions | ||
| --- | ||
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| import { Playground, Props } from 'docz'; | ||
| import { Toggler } from '@element-motion/dev'; | ||
| import { Motion } from '@element-motion/utils'; | ||
| import Translate from '../index'; | ||
| import InverseTranslate from '../InverseTranslate'; | ||
| import { Menu } from './styled'; | ||
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| # Translate | ||
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| Will translate an element from the `origin` to `destination` location. | ||
| Can also use `InverseTranslate` component to counteract the transform. | ||
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| ## Usage | ||
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| ```js | ||
| import Motion, { Translate, InverseTranslate } from '@element-motion/core'; | ||
| ``` | ||
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| **Try the interactive demos** 👇 | ||
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| ### Without inverse translate | ||
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| <Playground> | ||
| <Toggler> | ||
| {toggler => ( | ||
| <Motion triggerSelfKey={toggler.shown}> | ||
| <Translate> | ||
| {motion => ( | ||
| <Menu {...motion} right={toggler.shown} onClick={toggler.toggle}> | ||
| <div>hello, world</div> | ||
| </Menu> | ||
| )} | ||
| </Translate> | ||
| </Motion> | ||
| )} | ||
| </Toggler> | ||
| </Playground> | ||
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| ### With inverse translate | ||
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| <Playground> | ||
| <Toggler> | ||
| {toggler => ( | ||
| <Motion triggerSelfKey={toggler.shown}> | ||
| <Translate> | ||
| {motion => ( | ||
| <Menu {...motion} right={toggler.shown} onClick={toggler.toggle}> | ||
| <InverseTranslate>{inverse => <div {...inverse}>hello, world</div>}</InverseTranslate> | ||
| </Menu> | ||
| )} | ||
| </Translate> | ||
| </Motion> | ||
| )} | ||
| </Toggler> | ||
| </Playground> | ||
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| ## Props | ||
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| <Props of={Translate} /> | ||
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| ## Gotchas | ||
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| ### Inverse translate | ||
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| Make sure to utilise an element that is a block - either `block`, `inline-block`, `flex`, `inline-flex`. | ||
| Else the transforms will not be applied. |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,19 @@ | ||
| import styled from 'styled-components'; | ||
| import { colors } from '@element-motion/dev'; | ||
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| export const Menu = styled.div<any>` | ||
| display: flex; | ||
| align-items: center; | ||
| justify-content: center; | ||
| background-color: ${colors.red}; | ||
| border-radius: ${props => (props.isExpanded ? 3 : 1)}px; | ||
| color: white; | ||
| height: 200px; | ||
| width: 200px; | ||
| margin-left: ${props => (props.right ? 'auto' : 0)}; | ||
| cursor: pointer; | ||
| > div { | ||
| background-color: black; | ||
| } | ||
| `; |
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| import * as React from 'react'; | ||
| import { css, keyframes, cx } from 'emotion'; | ||
| import { | ||
| Collector, | ||
| CollectorChildrenProps, | ||
| CollectorActions, | ||
| MotionData, | ||
| bezierToFunc, | ||
| combine, | ||
| standard, | ||
| dynamic, | ||
| recalculateElementBoundingBoxFromScroll, | ||
| } from '@element-motion/utils'; | ||
| import { MotionProps } from '../types'; | ||
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| export interface TranslateProps extends CollectorChildrenProps, MotionProps {} | ||
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| const buildKeyframes = (elements: MotionData, duration: number, bezierCurve: string) => { | ||
| const frameTime = 1000 / 60; | ||
| const nFrames = Math.round(duration / frameTime); | ||
| const percentIncrement = 100 / nFrames; | ||
| const originBoundingBox = recalculateElementBoundingBoxFromScroll( | ||
| elements.origin.elementBoundingBox | ||
| ); | ||
| const destinationBoundingBox = elements.destination.elementBoundingBox; | ||
| const timingFunction = bezierToFunc(bezierCurve, duration); | ||
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| const startX = originBoundingBox.location.left - destinationBoundingBox.location.left; | ||
| const startY = originBoundingBox.location.top - destinationBoundingBox.location.top; | ||
| const endX = 0; | ||
| const endY = 0; | ||
| const animation: string[] = []; | ||
| const inverseAnimation: string[] = []; | ||
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| for (let i = 0; i <= nFrames; i += 1) { | ||
| const step = Number(timingFunction(i / nFrames).toFixed(5)); | ||
| const percentage = Number((i * percentIncrement).toFixed(5)); | ||
| const translateToX = Number((startX + (endX - startX) * step).toFixed(5)); | ||
| const translateToY = Number((startY + (endY - startY) * step).toFixed(5)); | ||
| const inverseTranslateToX = -translateToX; | ||
| const inverseTranslateToY = -translateToY; | ||
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| animation.push(` | ||
| ${percentage}% { | ||
| transform: translate3d(${translateToX}px, ${translateToY}px, 0); | ||
| }`); | ||
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| inverseAnimation.push(` | ||
| ${percentage}% { | ||
| transform: translate3d(${inverseTranslateToX}px, ${inverseTranslateToY}px, 0); | ||
| }`); | ||
| } | ||
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| return { | ||
| animation: keyframes(animation), | ||
| inverseAnimation: keyframes(inverseAnimation), | ||
| }; | ||
| }; | ||
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| export const INVERSE_TRANSLATE_CLASS_NAME = 'inVRsE-tRnsFrm'; | ||
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| const Translate: React.FC<TranslateProps> = ({ | ||
| children, | ||
| duration = 'dynamic', | ||
| timingFunction = standard(), | ||
| }: TranslateProps) => { | ||
| let calculatedDuration: number; | ||
| let animation: string; | ||
| let inverseAnimation: string; | ||
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| return ( | ||
| <Collector | ||
| data={{ | ||
| action: CollectorActions.motion, | ||
| payload: { | ||
| beforeAnimate: (elements, onFinish, setChildProps) => { | ||
| const originBoundingBox = recalculateElementBoundingBoxFromScroll( | ||
| elements.origin.elementBoundingBox | ||
| ); | ||
| const destinationBoundingBox = elements.destination.elementBoundingBox; | ||
| const translateToX = | ||
| originBoundingBox.location.left - destinationBoundingBox.location.left; | ||
| const translateToY = | ||
| originBoundingBox.location.top - destinationBoundingBox.location.top; | ||
| const inverseTranslateToX = -translateToX; | ||
| const inverseTranslateToY = -translateToY; | ||
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| calculatedDuration = | ||
| duration === 'dynamic' | ||
| ? dynamic( | ||
| elements.origin.elementBoundingBox, | ||
| elements.destination.elementBoundingBox | ||
| ) | ||
| : duration; | ||
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| ({ animation, inverseAnimation } = buildKeyframes( | ||
| elements, | ||
| calculatedDuration, | ||
| timingFunction | ||
| )); | ||
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| const common = { | ||
| willChange: 'transform', | ||
| transformOrigin: 'top left', | ||
| animationTimingFunction: 'step-end', | ||
| animationFillMode: 'forwards', | ||
| animationPlayState: 'paused', | ||
| }; | ||
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| setChildProps({ | ||
| style: prevStyle => ({ | ||
| ...prevStyle, | ||
| ...common, | ||
| transform: combine(`translate3d(${translateToX}px, ${translateToY}px, 0)`, '')( | ||
| prevStyle.transform | ||
| ), | ||
| animationDuration: `${calculatedDuration}ms`, | ||
| animationName: combine(animation)(prevStyle.animationName), | ||
| }), | ||
| className: () => | ||
| css({ | ||
| [`.${INVERSE_TRANSLATE_CLASS_NAME}`]: { | ||
| ...common, | ||
| transform: `translate3d(${inverseTranslateToX}px, ${inverseTranslateToY}px, 0)`, | ||
| animationDuration: `${calculatedDuration}ms`, | ||
| animationName: inverseAnimation, | ||
| }, | ||
| }), | ||
| }); | ||
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| onFinish(); | ||
| }, | ||
| animate: (_, onFinish, setChildProps) => { | ||
| setChildProps({ | ||
| style: prevStyle => ({ | ||
| ...prevStyle, | ||
| animationPlayState: 'running', | ||
| }), | ||
| className: prevClassName => | ||
| cx( | ||
| prevClassName, | ||
| css({ | ||
| [`.${INVERSE_TRANSLATE_CLASS_NAME}`]: { | ||
| animationPlayState: 'running', | ||
| }, | ||
| }) | ||
| ), | ||
| }); | ||
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| setTimeout(onFinish, calculatedDuration); | ||
| }, | ||
| }, | ||
| }} | ||
| > | ||
| {children} | ||
| </Collector> | ||
| ); | ||
| }; | ||
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| export default Translate; |
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