126 lines
2.7 KiB
JavaScript
126 lines
2.7 KiB
JavaScript
import studio from '@theatre/studio'
|
|
import {useLayoutEffect, useMemo, useState} from 'react'
|
|
import useDrag from './useDrag'
|
|
|
|
studio.initialize()
|
|
|
|
const boxObjectConfig = {
|
|
x: 0,
|
|
y: 0,
|
|
}
|
|
|
|
const Box = ({id, sheet, selectedObject}) => {
|
|
// This is cheap to call and always returns the same value, so no need for useMemo()
|
|
const obj = sheet.object(id, boxObjectConfig)
|
|
|
|
const isSelected = selectedObject === obj
|
|
|
|
const [pos, setPos] = useState({x: 0, y: 0})
|
|
|
|
useLayoutEffect(() => {
|
|
const unsubscribeFromChanges = obj.onValuesChange((newValues) => {
|
|
setPos(newValues)
|
|
})
|
|
return unsubscribeFromChanges
|
|
}, [id, obj])
|
|
|
|
const [divRef, setDivRef] = useState(null)
|
|
|
|
const dragOpts = useMemo(() => {
|
|
let scrub
|
|
let initial
|
|
let firstOnDragCalled = false
|
|
return {
|
|
onDragStart() {
|
|
scrub = studio.scrub()
|
|
initial = obj.value
|
|
firstOnDragCalled = false
|
|
},
|
|
onDrag(x, y) {
|
|
if (!firstOnDragCalled) {
|
|
studio.setSelection([obj])
|
|
firstOnDragCalled = true
|
|
}
|
|
scrub.capture(({set}) => {
|
|
set(obj.props, {x: x + initial.x, y: y + initial.y})
|
|
})
|
|
},
|
|
onDragEnd(dragHappened) {
|
|
if (dragHappened) {
|
|
scrub.commit()
|
|
} else {
|
|
scrub.discard()
|
|
}
|
|
},
|
|
lockCursorTo: 'move',
|
|
}
|
|
}, [])
|
|
|
|
useDrag(divRef, dragOpts)
|
|
|
|
return (
|
|
<div
|
|
onClick={() => {
|
|
studio.setSelection([obj])
|
|
}}
|
|
ref={setDivRef}
|
|
style={{
|
|
width: 100,
|
|
height: 100,
|
|
background: 'gray',
|
|
position: 'absolute',
|
|
left: pos.x + 'px',
|
|
top: pos.y + 'px',
|
|
boxSizing: 'border-box',
|
|
border: isSelected ? '1px solid #5a92fa' : '1px solid transparent',
|
|
}}
|
|
></div>
|
|
)
|
|
}
|
|
|
|
let lastBoxId = 1
|
|
|
|
const App = ({project}) => {
|
|
const [boxes, setBoxes] = useState(['0', '1'])
|
|
|
|
// This is cheap to call and always returns the same value, so no need for useMemo()
|
|
const sheet = project.sheet('Scene', 'default')
|
|
const [selection, _setSelection] = useState([])
|
|
|
|
useLayoutEffect(() => {
|
|
return studio.onSelectionChange((newSelection) => {
|
|
_setSelection(newSelection)
|
|
})
|
|
})
|
|
|
|
return (
|
|
<div
|
|
style={{
|
|
position: 'absolute',
|
|
left: 0,
|
|
right: 0,
|
|
top: 0,
|
|
bottom: 0,
|
|
background: '#575757',
|
|
}}
|
|
>
|
|
<button
|
|
onClick={() => {
|
|
setBoxes((boxes) => [...boxes, String(++lastBoxId)])
|
|
}}
|
|
>
|
|
Add
|
|
</button>
|
|
{boxes.map((id) => (
|
|
<Box
|
|
key={'box' + id}
|
|
id={id}
|
|
sheet={sheet}
|
|
selectedObject={selection[0]}
|
|
/>
|
|
))}
|
|
</div>
|
|
)
|
|
}
|
|
|
|
export default App
|