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import React, { Component } from 'react'
import { Route, Link } from 'react-router-dom'
import { bindActionCreators } from 'redux'
import { connect } from 'react-redux'
import { session } from '../../../session'
import actions from '../../../actions'
import * as graphActions from '../graph.actions'
import { Loader } from '../../../common'
import { clamp, dist, mod, angle } from '../../../util'
import GraphCanvas from './graph.canvas'
import PageHandle from './page.handle'
const defaultState = {
dragging: false,
bounds: null,
mouseX: 0,
mouseY: 0,
box: {
x: 0, y: 0,
w: 0, h: 0,
},
page: null,
measurements: {},
}
class GraphEditor extends Component {
state = {
...defaultState,
}
constructor() {
super()
// bind these events in the constructor, so we can remove event listeners later
this.handleMouseDown = this.handleMouseDown.bind(this)
this.handleMouseMove = this.handleMouseMove.bind(this)
this.handleMouseUp = this.handleMouseUp.bind(this)
this.handleWindowResize = this.handleWindowResize.bind(this)
this.graphRef = React.createRef()
this.measurements = {}
}
getBoundingClientRect() {
if (!this.graphRef.current) return null
const rect = this.graphRef.current.getBoundingClientRect()
const scrollTop = document.body.scrollTop || document.body.parentNode.scrollTop
const scrollLeft = document.body.scrollLeft || document.body.parentNode.scrollLeft
const bounds = {
top: rect.top + scrollTop,
left: rect.left + scrollLeft,
width: rect.width,
height: rect.height,
}
// console.log(bounds)
return bounds
}
componentDidMount() {
document.body.addEventListener('mousemove', this.handleMouseMove)
document.body.addEventListener('mouseup', this.handleMouseUp)
window.addEventListener('resize', this.handleWindowResize)
this.setState({ bounds: this.getBoundingClientRect() })
}
componentDidUpdate(prevProps) {
if (!this.state.bounds) {
this.setState({ bounds: this.getBoundingClientRect() })
}
}
addMeasurement({ id, width, height }) {
this.measurements[id] = { width, height }
this.setState({
measurements: { ...this.measurements },
})
}
handleWindowResize() {
this.setState({ bounds: this.getBoundingClientRect() })
}
handleMouseDown(e, page) {
if (e.shiftKey) {
e.preventDefault()
this.props.graphActions.setHomePageId(this.props.graph.show.res, page)
return
}
const bounds = this.getBoundingClientRect()
const mouseX = e.pageX
const mouseY = e.pageY
let w = 128 / bounds.width
let h = 16 / bounds.height
let { x, y } = page.settings
x = clamp(x, 0, 1)
y = clamp(y, 0, 1)
this.setState({
page,
dragging: true,
bounds,
mouseX,
mouseY,
box: {
x, y,
w, h,
},
initialBox: {
x, y,
w, h,
}
})
}
handleMouseMove(e) {
const {
dragging,
bounds, mouseX, mouseY, initialBox, box
} = this.state
if (dragging) {
e.preventDefault()
let { x, y, w, h } = initialBox
let dx = (e.pageX - mouseX) / bounds.width
let dy = (e.pageY - mouseY) / bounds.height
this.setState({
box: {
x: clamp(x + dx, 0, 1.0 - w),
y: clamp(y + dy, 0, 1.0 - h),
w, h,
}
})
}
}
handleMouseUp(e) {
// const { actions } = this.props
const { dragging, bounds, initialBox, box, page } = this.state
if (!dragging) return
e.preventDefault()
const { width, height } = bounds
const { x, y, w, h } = box
let url = window.location.pathname
this.setState({
page: null,
box: null,
initialBox: null,
dragging: false,
})
if (dist(width * x, height * y, width * initialBox.x, height * initialBox.y) < 3) return
const updatedPage = {
...page,
settings: {
...page.settings,
x, y,
}
}
this.props.graphActions.updateGraphPage(updatedPage)
actions.page.update(updatedPage)
}
render(){
// console.log(this.props.graph.show.res)
const { page: currentPage, box, measurements } = this.state
const { res: graph } = this.props.graph.show
// console.log(res.pages)
return (
<div className='graph' ref={this.graphRef}>
<GraphCanvas
bounds={this.state.bounds}
pages={graph.pages}
currentPage={currentPage}
measurements={measurements}
box={box}
/>
{this.state.bounds && graph.pages.map(page => (
<PageHandle
key={page.id}
graph={graph}
page={page}
bounds={this.state.bounds}
box={currentPage && page.id === currentPage.id && box}
onMouseDown={e => this.handleMouseDown(e, page)}
onMeasure={measurement => this.addMeasurement(measurement)}
/>
))}
</div>
)
}
}
const mapStateToProps = state => ({
graph: state.graph,
})
const mapDispatchToProps = dispatch => ({
graphActions: bindActionCreators({ ...graphActions }, dispatch),
})
export default connect(mapStateToProps, mapDispatchToProps)(GraphEditor)
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