1 files changed, 212 insertions, 0 deletions
diff --git a/frontend/app/views/graph/components/graph.editor.js b/frontend/app/views/graph/components/graph.editor.js
new file mode 100644
index 0000000..61f26b7
--- /dev/null
+++ b/frontend/app/views/graph/components/graph.editor.js
@@ -0,0 +1,212 @@
+import React, { Component } from 'react'
+import { Route, Link } from 'react-router-dom'
+import { bindActionCreators } from 'redux'
+import { connect } from 'react-redux'
+
+import { session } from 'app/session'
+import actions from 'app/actions'
+import * as graphActions from '../graph.actions'
+
+import { Loader } from 'app/common'
+import { clamp, dist, mod, angle } from 'app/utils'
+
+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,
+  highlightedPageId: 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.handleMouseEnter = this.handleMouseEnter.bind(this)
+    this.handleMouseLeave = this.handleMouseLeave.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)
+  }
+
+  handleMouseEnter(e, page) {
+    this.setState({ highlightedPageId: page.id })
+  }
+  handleMouseLeave(e, page) {
+    this.setState({ highlightedPageId: null })
+  }
+
+  render(){
+    // console.log(this.props.graph.show.res)
+    const { page: currentPage, box, measurements, highlightedPageId } = 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}
+          highlightedPageId={highlightedPageId}
+          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)}
+            onMouseEnter={e => this.handleMouseEnter(e, page)}
+            onMouseLeave={e => this.handleMouseLeave(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)