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import React, { Component } from 'react'
import { Link } from 'react-router-dom'
import { bindActionCreators } from 'redux'
import { connect } from 'react-redux'
import toBlob from 'data-uri-to-blob'
import { clamp, px } from '../util'
import { Loader } from '../common'
import * as searchActions from './search.actions'
import SearchMeta from './search.meta'
const defaultState = {
dragging: false,
draggingBox: false,
bounds: null,
mouseX: 0,
mouseY: 0,
box: {
x: 0,
y: 0,
w: 0,
h: 0,
}
}
class SearchQuery extends Component {
state = {
...defaultState
}
constructor() {
super()
this.handleMouseDown = this.handleMouseDown.bind(this)
this.handleMouseDownOnBox = this.handleMouseDownOnBox.bind(this)
this.handleMouseMove = this.handleMouseMove.bind(this)
this.handleMouseUp = this.handleMouseUp.bind(this)
}
componentDidMount() {
document.body.addEventListener('mousemove', this.handleMouseMove)
document.body.addEventListener('mouseup', this.handleMouseUp)
}
componentDidUpdate(prevProps) {
// console.log(this.props.query.query, !prevProps.query.query)
if (this.state.bounds && (!this.props.query.query || !prevProps.query.query || this.props.query.query.url !== prevProps.query.query.url)) {
this.setState({ ...defaultState })
}
}
componentWillUnmount() {
document.body.removeEventListener('mousemove', this.handleMouseMove)
document.body.removeEventListener('mouseup', this.handleMouseUp)
}
handleMouseDown(e) {
e.preventDefault()
const bounds = this.imgRef.getBoundingClientRect()
const mouseX = e.pageX
const mouseY = e.pageY
const x = mouseX - bounds.left
const y = mouseY - bounds.top
const w = 1
const h = 1
this.setState({
dragging: true,
bounds,
mouseX,
mouseY,
box: {
x, y, w, h,
}
})
}
handleMouseDownOnBox(e) {
const bounds = this.imgRef.getBoundingClientRect()
const mouseX = e.pageX
const mouseY = e.pageY
this.setState({
draggingBox: true,
bounds,
mouseX,
mouseY,
initialBox: {
...this.state.box
},
box: {
...this.state.box
}
})
}
handleMouseMove(e) {
const {
dragging, draggingBox,
bounds, mouseX, mouseY, initialBox, box
} = this.state
if (dragging) {
e.preventDefault()
let { x, y } = box
let w = clamp(e.pageX - mouseX, 0, bounds.width - x)
let h = clamp(e.pageY - mouseY, 0, bounds.height - y)
this.setState({
box: {
x, y, w, h,
}
})
} else if (draggingBox) {
e.preventDefault()
let { x, y, w, h } = initialBox
let dx = (e.pageX - mouseX)
let dy = (e.pageY - mouseY)
this.setState({
box: {
x: clamp(x + dx, 0, bounds.width - w),
y: clamp(y + dy, 0, bounds.height - h),
w,
h,
}
})
}
}
handleMouseUp(e) {
const { actions } = this.props
const { dragging, draggingBox, bounds, box } = this.state
if (!dragging && !draggingBox) return
e.preventDefault()
const { x, y, w, h } = box
// console.log(x, y, w, h)
const img = this.imgRef
const canvas = document.createElement('canvas')
const ctx = canvas.getContext('2d')
const ratio = img.naturalWidth / bounds.width
canvas.width = w * ratio
canvas.height = h * ratio
if (w < 10 || h < 10) {
this.setState({ dragging: false, draggingBox: false, box: { x: 0, y: 0, w: 0, h: 0 } })
return
}
this.setState({ dragging: false, draggingBox: false })
// query_div.appendChild(canvas)
const newImage = new Image()
let loaded = false
newImage.onload = () => {
if (loaded) return
loaded = true
newImage.onload = null
ctx.drawImage(
newImage,
Math.round(x * ratio),
Math.round(y * ratio),
Math.round(w * ratio),
Math.round(h * ratio),
0, 0, canvas.width, canvas.height
)
const blob = toBlob(canvas.toDataURL('image/jpeg', 0.9))
actions.upload(blob, {
...this.props.query.query,
crop: {
x, y, w, h,
}
})
}
// console.log(img.src)
newImage.crossOrigin = 'anonymous'
newImage.src = img.src
if (newImage.complete) {
newImage.onload()
}
}
render() {
const { query } = this.props.query
const { box } = this.state
const { x, y, w, h } = box
if (!query) return null
if (query.loading) {
return <div className="searchQuery column"><h2>Loading results...</h2><Loader /></div>
}
let { url } = query
if (url && url.indexOf('static') === 0) {
url = '/search/' + url
}
return (
<div className="searchQuery row">
<div className="searchBox">
<img
src={url}
ref={ref => this.imgRef = ref}
onMouseDown={this.handleMouseDown}
crossOrigin='anonymous'
/>
{!!w &&
<div
className="box"
style={{
left: x,
top: y,
width: w,
height: h,
}}
onMouseDown={this.handleMouseDownOnBox}
/>
}
</div>
<div>
<h3>Your Query</h3>
<SearchMeta query={query} />
</div>
</div>
)
}
}
const mapStateToProps = state => ({
query: state.search.query,
options: state.search.options,
})
const mapDispatchToProps = dispatch => ({
actions: bindActionCreators({ ...searchActions }, dispatch),
})
export default connect(mapStateToProps, mapDispatchToProps)(SearchQuery)
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