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ScatterMenu snippet
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require('animate.css'); | |
require('./ScatterMenu.styl'); | |
import React, { PropTypes } from 'react'; | |
import { Motion, StaggeredMotion, spring } from 'react-motion'; | |
import cx from 'classnames'; | |
import { BOUNCE, FADE } from '../../constant'; | |
import { Button } from '../Button'; | |
const VIRTUAL_AREA_RATIO = 0.95; | |
const HOLDING_DURATION = { | |
ROOT: 500, | |
TAB: 600 | |
}; | |
const VALID_AREA = { | |
DISTANCE: 100, | |
MIN: 20, | |
MAX: 120 | |
}; | |
const MOVING_AREA = { | |
MAIN: 'main', | |
SUB: 'sub' | |
}; | |
const propTypes = { | |
tabs: PropTypes.array, | |
position: PropTypes.string, | |
iconName: PropTypes.string, | |
useVirtualArea: PropTypes.bool | |
}; | |
const defaultProps = { | |
tabs: [], | |
iconName: 'create', | |
position: 'left-bottom', | |
useVirtualArea: true | |
}; | |
export default class ScatterMenu extends React.Component { | |
constructor(props) { | |
super(props); | |
let { tabs } = this.props; | |
this.state = { | |
rootPoint: {}, | |
couldExpandMainTabs: false, | |
mainTabDelayer: null, | |
subTabDelayer: null, | |
rootHoldingTime: null, | |
tabHoldingTime: null, | |
tabs, | |
tabsLoaded: false, | |
activeMainTab: null, | |
activeSubTab: null, | |
activeArea: MOVING_AREA.MAIN | |
}; | |
this.touchStart = ::this.touchStart; | |
this.touchMove = ::this.touchMove; | |
this.touchEnd = ::this.touchEnd; | |
this.getPointAddOn = ::this.getPointAddOn; | |
this.isUsefulPointOnMainArea = ::this.isUsefulPointOnMainArea; | |
this.isUsefulPointOnSubArea = ::this.isUsefulPointOnSubArea; | |
} | |
componentDidMount() { | |
let rootDOMNode = this.refs.rootPoint; | |
let { tabs } = this.state; | |
const { position, useVirtualArea } = this.props; | |
const distance = VALID_AREA.DISTANCE; | |
const getRad = (position, { length }, useVirtualArea = null, center={ x: 0, y: 0 }, middle = null) => { | |
let useDefiniteEdge = useVirtualArea === false; // Note the virtual area parameter here should be treat careful | |
let areaRatio = useVirtualArea ? VIRTUAL_AREA_RATIO : 1; | |
let distance = useDefiniteEdge ? VALID_AREA.DISTANCE : 1; | |
let eachRad = null; | |
let startRad = null; | |
let endRad = null; | |
let startEdge = null; | |
let endEdge = null; | |
let addOn = null; | |
middle = useVirtualArea ? null : middle; | |
addOn = this.getPointAddOn(position, distance, middle); | |
startEdge = { x: center.x + addOn.start.x, y: center.y + addOn.start.y }; | |
endEdge = { x: center.x + addOn.end.x, y: center.y + addOn.end.y }; | |
startRad = Math.atan((startEdge.y - center.y) / (startEdge.x - center.x)); | |
endRad = Math.atan((endEdge.y - center.y) / (endEdge.x - center.x)); | |
if (startRad === 0 && (startEdge.x - center.x) < 0) startRad = Math.PI; | |
if (endRad === 0 && (endEdge.x - center.x) < 0) endRad = -Math.PI; | |
let offsetRad = Math.abs(startRad - endRad) * (1 - areaRatio) / 2 | |
if (startRad > endRad) { | |
startRad -= offsetRad; | |
endRad += offsetRad; | |
} else { | |
startRad += offsetRad; | |
endRad -= offsetRad; | |
} | |
eachRad = (endRad - startRad) / length; | |
eachRad = Math.sign(eachRad) * Math.floor(Math.abs(eachRad) * 1e3) / 1e3; | |
return { each: eachRad, start: startRad, end: endRad }; | |
}; | |
const generateTabInstance = (tab, idx, distance, radOfParent, radOfRoot = null) => { | |
let x = +(Math.cos(radOfParent.start+radOfParent.each*(idx+0.5))*distance).toFixed(2); | |
let y = +(Math.sin(radOfParent.start+radOfParent.each*(idx+0.5))*distance).toFixed(2); | |
tab.style = { x, y }; | |
tab.radFromParent = (radOfParent.start+radOfParent.each*(idx+0.5)); | |
tab.kFromParent = Math.tan(tab.radFromParent); | |
if (radOfRoot) { | |
tab.radFromRoot = (radOfRoot.start+radOfRoot.each*(idx+0.5)); | |
tab.kFromRoot = Math.tan(tab.radFromRoot); | |
} | |
return tab; | |
}; | |
let rad = getRad(position, tabs); | |
let rootPoint = { | |
eachRad: rad.each, | |
x: rootDOMNode.offsetLeft, | |
y: rootDOMNode.offsetTop, | |
radius: rootDOMNode.clientWidth / 2, | |
centerX: rootDOMNode.clientWidth / 2 + rootDOMNode.offsetLeft, | |
centerY: rootDOMNode.clientWidth / 2 + rootDOMNode.offsetTop | |
}; | |
let computedTabs = tabs.map((tab, idx) => { | |
tab = generateTabInstance(tab, idx, distance, rad); | |
if (tab.subTabs) { | |
let center = { x: rootPoint.x, y: rootPoint.y }; | |
let middle = { x: tab.style.x, y: tab.style.y }; | |
let subRadFromParent = getRad(position, tab.subTabs); | |
let subRadFromRoot = getRad(position, tab.subTabs, useVirtualArea, center, middle); | |
tab.eachRadOfItself = subRadFromParent.each; | |
tab.eachRadOfRoot = subRadFromRoot.each; | |
tab.subTabs = tab.subTabs.map((subTab, subIdx) => { | |
return generateTabInstance(subTab, subIdx, distance, subRadFromParent, subRadFromRoot); | |
}); | |
tab.motion = { | |
start: tab.subTabs.map(() => ({x: 0, y: 0, opacity: 0})), | |
end: tab.subTabs.map(v => { | |
return {...v.style, opacity: 1}; | |
}) | |
}; | |
} | |
return tab; | |
}); | |
const topMotion = { | |
start: tabs.map(() => ({x: 0, y: 0, opacity: 0})), | |
end: tabs.map(v => { | |
return {...v.style, opacity: 1}; | |
}) | |
}; | |
this.setState({ rootPoint, topMotion, tabs: computedTabs, tabsLoaded: true }); | |
} | |
touchStart() { | |
clearTimeout(this.state.mainTabDelayer); | |
let mainTabDelayer = setTimeout(() => { | |
let { rootHoldingTime: time } = this.state; | |
if (time && Date.now() - time >= HOLDING_DURATION.ROOT) { | |
this.setState({ couldExpandMainTabs: true }); | |
} | |
}, HOLDING_DURATION.ROOT); | |
this.setState({ | |
mainTabDelayer, | |
isFiring: true, | |
rootHoldingTime: Date.now() | |
}); | |
} | |
touchMove(evt) { | |
if (!this.state.couldExpandMainTabs) return; | |
let { rootPoint, tabs, subTabDelayer, activeArea, activeMainTab: preActiveMainTab, activeSubTab: preActiveSubTab } = this.state; | |
const { pageX, pageY } = evt.touches[0]; | |
const { position, useVirtualArea } = this.props; | |
const center = { x: rootPoint.centerX, y: rootPoint.centerY }; | |
const curK = (pageY - center.y) / (pageX - center.x); | |
let curActiveMainTab = null; | |
let curActiveSubTab = null; | |
const checkIfTabActive = (tabRad, tabK, pointK, eachRad) => { | |
let start = tabK; | |
let end = start > 0 ? Math.tan(tabRad - Math.abs(eachRad)) : Math.tan(tabRad + Math.abs(eachRad)); // Sorry for my bad math:) | |
return pointK >= Math.min(start, end) && pointK < Math.max(start, end); | |
}; | |
if (activeArea === MOVING_AREA.MAIN) { | |
if (!this.isUsefulPointOnMainArea(pageX, pageY, position, center)) return this.resetActiveTab(); | |
// prevent calculating when the active tab not changed | |
if (preActiveMainTab && checkIfTabActive(preActiveMainTab.radFromParent, preActiveMainTab.kFromParent, curK, rootPoint.eachRad)) return; | |
let newTabs = tabs.map(tab => { | |
tab.couldExpand = false; | |
tab.active = checkIfTabActive(tab.radFromParent, tab.kFromParent, curK, rootPoint.eachRad); | |
if (tab.active) curActiveMainTab = tab; | |
return tab; | |
}); | |
clearTimeout(subTabDelayer); | |
subTabDelayer = setTimeout(() => { | |
let { tabHoldingTime: time, activeMainTab } = this.state; | |
if (activeMainTab && activeMainTab.subTabs && time && (Date.now() - time >= HOLDING_DURATION.TAB)) { | |
activeMainTab.couldExpand = true; | |
this.setState({ activeMainTab, activeArea: MOVING_AREA.SUB }); | |
} | |
}, HOLDING_DURATION.TAB); | |
this.setState({ | |
activeMainTab: curActiveMainTab, | |
tabs: newTabs, | |
subTabDelayer, | |
tabHoldingTime: Date.now() | |
}); | |
} else if (activeArea === MOVING_AREA.SUB) { | |
let distance = useVirtualArea ? 1 : VALID_AREA.DISTANCE; | |
let middle = useVirtualArea ? null : preActiveMainTab.style; | |
let addOn = this.getPointAddOn(position, distance, middle); | |
let startPoint = { x: center.x + addOn.start.x, y: center.y + addOn.start.y }; | |
let endPoint = { x: center.x + addOn.end.x, y: center.y + addOn.end.y }; | |
if (!this.isUsefulPointOnSubArea(pageX, pageY, position, center, startPoint, endPoint, useVirtualArea)) { | |
this.resetActiveTab({}, false); | |
return this.setState({ activeArea: MOVING_AREA.MAIN, activeSubTab: null, activeMainTab: preActiveMainTab }); | |
} | |
// prevent calculating when the active tab not changed | |
if (preActiveSubTab && checkIfTabActive(preActiveSubTab.radFromRoot, preActiveSubTab.kFromRoot, curK, preActiveMainTab.eachRadOfRoot)) return; | |
preActiveMainTab.subTabs.map(subTab => { | |
subTab.active = checkIfTabActive(subTab.radFromRoot, subTab.kFromRoot, curK, preActiveMainTab.eachRadOfRoot); | |
if (subTab.active) curActiveSubTab = subTab; | |
return subTab; | |
}); | |
this.setState({ activeSubTab: curActiveSubTab }); | |
} | |
} | |
touchEnd() { | |
let { activeMainTab, activeSubTab } = this.state; | |
(activeSubTab && activeSubTab.handler()) || (activeMainTab && !activeMainTab.subTabs && activeMainTab.handler()); | |
this.resetActiveTab({ | |
isFiring: false, | |
rootHoldingTime: null, | |
tabHoldingTime: null, | |
couldExpandMainTabs: false | |
}); | |
} | |
getPointAddOn(position, distance = 1, middle = null) { | |
let addOn = null; | |
switch (position) { | |
case 'left-top': | |
case 'top-left': | |
addOn = { | |
start: { x: 1 * distance, y: 0 }, | |
end: { x: 0, y: 1 * distance } | |
}; | |
break; | |
case 'left-bottom': | |
case 'bottom-left': | |
addOn = { | |
start: { x: 0, y: -1 * distance}, | |
end: { x: 1 * distance, y: 0 } | |
}; | |
break; | |
case 'right-top': | |
case 'top-right': | |
addOn = { | |
start: { x: -1 * distance, y: 0 }, | |
end: { x: 0, y: 1 * distance } | |
}; | |
break; | |
case 'right-bottom': | |
case 'bottom-right': | |
addOn = { | |
start: { x: 0, y: -1 * distance }, | |
end: { x: -1 * distance, y: 0 } | |
}; | |
break; | |
default: | |
throw('Unknown position'); | |
} | |
if (middle) { | |
addOn = { | |
start: { | |
x: addOn.start.x + middle.x, | |
y: addOn.start.y + middle.y, | |
}, | |
end: { | |
x: addOn.end.x + middle.x, | |
y: addOn.end.y + middle.y, | |
} | |
}; | |
} | |
return addOn; | |
} | |
isUsefulPointOnMainArea(pageX, pageY, position, center) { | |
let distance = Math.sqrt(Math.pow((pageY - center.y), 2) + Math.pow((pageX - center.x), 2)); | |
if (distance < VALID_AREA.MIN || distance > VALID_AREA.MAX) return false; | |
switch (position) { | |
case 'left-top': | |
case 'top-left': | |
return pageX >= center.x && pageY >= center.y; | |
case 'left-bottom': | |
case 'bottom-left': | |
return pageX >= center.x && pageY <= center.y; | |
case 'right-top': | |
case 'top-right': | |
return pageX <= center.x && pageY >= center.y; | |
case 'right-bottom': | |
case 'bottom-right': | |
return pageX <= center.x && pageY <= center.y; | |
default: | |
throw('Unknown position'); | |
} | |
} | |
isUsefulPointOnSubArea(pageX, pageY, position, center, startPoint, endPoint, useVirtualArea) { | |
let distance = Math.sqrt(Math.pow((pageY - center.y), 2) + Math.pow((pageX - center.x), 2)); | |
if (distance < VALID_AREA.MIN || distance > VALID_AREA.MAX) return false; | |
let areaRatio = useVirtualArea ? VIRTUAL_AREA_RATIO : 1; | |
let curK = (pageY - center.y) / (pageX - center.x); | |
let startRad = Math.atan((startPoint.y - center.y) / (startPoint.x - center.x)); | |
let endRad = Math.atan((endPoint.y - center.y) / (endPoint.x - center.x)); | |
if (startRad === 0 && (startPoint.x - center.x) < 0) startRad = Math.PI; | |
if (endRad === 0 && (endPoint.x - center.x) < 0) endRad = -Math.PI; | |
let offsetRad = Math.abs(startRad - endRad) * (1 - areaRatio) / 2 | |
if (startRad > endRad) { | |
startRad -= offsetRad; | |
endRad += offsetRad; | |
} else { | |
startRad += offsetRad; | |
endRad -= offsetRad; | |
} | |
let startK = Math.tan(startRad); | |
let endK = Math.tan(endRad); | |
switch (position) { | |
case 'left-top': | |
case 'top-left': | |
case 'left-bottom': | |
case 'bottom-left': | |
return curK >= startK && curK <= endK; | |
case 'right-top': | |
case 'top-right': | |
case 'right-bottom': | |
case 'bottom-right': | |
return curK >= endK && curK <= startK; | |
default: | |
throw('Unknown position'); | |
} | |
} | |
resetActiveTab(opt = {}, resetAll = true) { | |
const { tabs, mainTabDelayer, subTabDelayer, activeMainTab } = this.state; | |
clearTimeout(mainTabDelayer); | |
clearTimeout(subTabDelayer); | |
let newTabs = tabs.map(tab => { | |
if (resetAll) tab.active = false; | |
if (tab.subTabs) { | |
tab.subTabs = tab.subTabs.map(subTab => { | |
subTab.active = false; | |
return subTab; | |
}); | |
tab.couldExpand = false; | |
} | |
return tab; | |
}); | |
this.setState({ | |
tabs: newTabs, | |
activeMainTab: resetAll ? null : activeMainTab, | |
activeSubTab: null, | |
...opt | |
}); | |
} | |
render() { | |
let { position, iconName, children } = this.props; | |
let { tabs, topMotion, couldExpandMainTabs, isFiring, tabsLoaded } = this.state; | |
let tabList = null; | |
let scatterCls = cx({ | |
[position]: true, | |
'scatter-menu': true, | |
'firing': this.state.isFiring | |
}); | |
let scatterIconCls = cx({ | |
['icon-' + iconName]: true, | |
'scatter-icon': true | |
}); | |
let btnMotion = { | |
opacity: isFiring ? spring(1, BOUNCE) : spring(0.9, BOUNCE), | |
scale: isFiring ? spring(2, BOUNCE) : spring(1, BOUNCE) | |
}; | |
if (tabsLoaded) { | |
let easing = couldExpandMainTabs ? BOUNCE : FADE; | |
tabList = ( | |
<StaggeredMotion | |
defaultStyles={topMotion.start} | |
styles={prev => prev.map((val, i) => { | |
if (i === 0) { | |
let state = couldExpandMainTabs ? 'end' : 'start'; | |
return { | |
x: spring(topMotion[state][0].x, easing), | |
y: spring(topMotion[state][0].y, easing), | |
opacity: spring(topMotion[state][0].opacity, FADE) | |
}; | |
} | |
return { | |
x: spring(prev[i-1].x / topMotion.end[i-1].x * topMotion.end[i].x, easing), | |
y: spring(prev[i-1].y / topMotion.end[i-1].y * topMotion.end[i].y, easing), | |
opacity: spring(prev[i-1].opacity / topMotion.end[i-1].opacity * topMotion.end[i].opacity, FADE) | |
}; | |
})}> | |
{ styles => | |
<ul className="scatter-list"> | |
{tabs.map((tab, idx) => { | |
let scatterTabCls = cx({ | |
active: tab.active, | |
'scatter-tab': true | |
}); | |
return (<li | |
key={idx} | |
className={scatterTabCls} | |
style={{transform: `translate3d(${styles[idx].x}px, ${styles[idx].y}px, 0)`, opacity: styles[idx].opacity}} | |
onClick={tab.handler} | |
> | |
{tab.subTabs ? null : <h6 className="scatter-item-title">{tab.title}</h6>} | |
<i className={'icon-' + tab.iconName} /> | |
{tab.subTabs && tab.active ? | |
<StaggeredMotion | |
defaultStyles={tab.motion.start} | |
styles={prev => prev.map((val, i) => { | |
if (i === 0) { | |
let state = tab.couldExpand ? 'end' : 'start'; | |
return { | |
x: spring(tab.motion[state][0].x, easing), | |
y: spring(tab.motion[state][0].y, easing), | |
opacity: spring(tab.motion[state][0].opacity, FADE) | |
}; | |
} | |
return { | |
x: spring(prev[i-1].x / tab.motion.end[i-1].x * tab.motion.end[i].x, easing), | |
y: spring(prev[i-1].y / tab.motion.end[i-1].y * tab.motion.end[i].y, easing), | |
opacity: spring(prev[i-1].opacity / tab.motion.end[i-1].opacity * tab.motion.end[i].opacity, FADE) | |
}; | |
})}> | |
{ styles => | |
<ul className="scatter-sub-list"> | |
{tab.subTabs.map((subTab, subIdx) => { | |
let scatterSubTabCls = cx({ | |
active: subTab.active, | |
'scatter-sub-tab': true | |
}); | |
return (<li | |
key={'sub' + subIdx} | |
className={scatterSubTabCls} | |
style={{transform: `translate3d(${styles[subIdx].x}px, ${styles[subIdx].y}px, 0)`, opacity: styles[subIdx].opacity}} | |
onClick={subTab.handler} | |
> | |
<h6 className="scatter-item-title">{subTab.title}></h6> | |
<i className={'icon-' + subTab.iconName} /> | |
</li>);} | |
)} | |
</ul> | |
} | |
</StaggeredMotion> | |
: null} | |
</li>);} | |
)} | |
</ul> | |
} | |
</StaggeredMotion> | |
); | |
} | |
return ( | |
<div className={scatterCls} | |
onTouchStart={this.touchStart} | |
onTouchMove={this.touchMove} | |
onTouchEnd={this.touchEnd} | |
ref="rootPoint" | |
> | |
<Motion defaultStyle={{opacity: 0.9, scale: 1}} style={{...btnMotion}}> | |
{ style => <button className="scatter-btn" style={{...style, transform: `scale(${style.scale})`}}/> } | |
</Motion> | |
{children ? children : <i className={scatterIconCls} />} | |
{tabList} | |
</div> | |
); | |
} | |
} | |
ScatterMenu.propTypes = propTypes; | |
ScatterMenu.defaultProps = defaultProps; |
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