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div#head.box
div.box
div.box
div.box
div.box
div.box
div.box
colors = red orange yellow green cyan blue purple
reverse(i)
100 - i
.box
position absolute
transform translate(10px, 10px)
transition 0.1s transform ease-out
width 40px
height 40px
background orange
cursor pointer
for color, i in colors
&:nth-child({i + 1})
background color
z-index reverse(i)
if color != red
pointer-events: none
const headBox = document.getElementById('head')
const boxes = document.getElementsByClassName('box')
const mouseDown$ = Rx.Observable.fromEvent(headBox, 'mousedown')
const mouseMove$ = Rx.Observable.fromEvent(document, 'mousemove')
const mouseUp$ = Rx.Observable.fromEvent(document, 'mouseup')
const delayBoxes$ = Rx.Observable.from([].slice.call(boxes, 0))
.zip(Rx.Observable.interval(100).startWith(0), (box) => box)
mouseDown$.map((e) => {
const pos = getTranslate(headBox)
return {
pos,
event: e,
}
})
.switchMap((initialState) => {
const initialPos = initialState.pos
const { clientX, clientY } = initialState.event
return mouseMove$.map((moveEvent) => ({
x: moveEvent.clientX - clientX + initialPos.x,
y: moveEvent.clientY - clientY + initialPos.y,
}))
.takeUntil(mouseUp$)
})
.mergeMap((pos) => {
return delayBoxes$.do((box) => {
setTranslate(box, pos)
})
})
.subscribe()
function getTranslate (element) {
const style = getComputedStyle(element)
const regExp = /matrix\((\d+,\s){4}(\d+),\s(\d+)/i
const result = style.transform.match(regExp)
if (result) {
return {
x: parseInt(result[2], 10),
y: parseInt(result[3], 10)
}
} else {
return {
x: 0,
y: 0
}
}
}
function setTranslate (element, pos) {
element.style.transform = `translate(${pos.x}px, ${pos.y}px)`
}
Also see: Tab Triggers