frontend/src/Metamaps/JIT.js
/* global $, Image */
import _ from 'lodash'
import clipboard from 'clipboard-js'
import $jit from '../patched/JIT'
import Active from './Active'
import ContextMenu from './Views/ContextMenu'
import Control from './Control'
import Create from './Create'
import DataModel from './DataModel'
import Filter from './Filter'
import GlobalUI, { ReactApp } from './GlobalUI'
import Map from './Map'
import Mouse from './Mouse'
import Selected from './Selected'
import Settings from './Settings'
import Synapse from './Synapse'
import SynapseCard from './SynapseCard'
import Topic from './Topic'
import TopicCard from './Views/TopicCard'
import Util from './Util'
import Visualize from './Visualize'
let panningInt
const JIT = {
tempInit: false,
tempNode: null,
tempNode2: null,
mouseDownPix: {},
dragFlag: 0,
dragTolerance: 0,
virtualPointer: {},
events: {
topicDrag: 'Metamaps:JIT:events:topicDrag',
pan: 'Metamaps:JIT:events:pan',
zoom: 'Metamaps:JIT:events:zoom',
animationDone: 'Metamaps:JIT:events:animationDone'
},
vizData: [], // contains the visualization-compatible graph
/**
* This method will bind the event handlers it is interested and initialize the class.
*/
init: function(serverData) {
const self = JIT
self.topicDescImage = new Image()
self.topicDescImage.src = serverData['topic_description_signifier.png']
self.topicLinkImage = new Image()
self.topicLinkImage.src = serverData['topic_link_signifier.png']
},
/**
* convert our topic JSON into something JIT can use
*/
convertModelsToJIT: function(topics, synapses) {
const jitReady = []
const synapsesToRemove = []
let mapping
let node
const nodes = {}
let existingEdge
let edge
const edges = []
topics.each(function(t) {
node = t.createNode()
nodes[node.id] = node
})
synapses.each(function(s) {
edge = s.createEdge()
if (topics.get(s.get('topic1_id')) === undefined || topics.get(s.get('topic2_id')) === undefined) {
// this means it's an invalid synapse
synapsesToRemove.push(s)
} else if (nodes[edge.nodeFrom] && nodes[edge.nodeTo]) {
existingEdge = _.find(edges, {
nodeFrom: edge.nodeFrom,
nodeTo: edge.nodeTo
}) ||
_.find(edges, {
nodeFrom: edge.nodeTo,
nodeTo: edge.nodeFrom
})
if (existingEdge) {
// for when you're dealing with multiple relationships between the same two topics
if (Active.Map) {
mapping = s.getMapping()
existingEdge.data['$mappingIDs'].push(mapping.id)
}
existingEdge.data['$synapseIDs'].push(s.id)
} else {
// for when you're dealing with a topic that has relationships to many different nodes
nodes[edge.nodeFrom].adjacencies.push(edge)
edges.push(edge)
}
}
})
_.each(nodes, function(node) {
jitReady.push(node)
})
return [jitReady, synapsesToRemove]
},
prepareVizData: function() {
const self = JIT
let mapping
self.vizData = []
Visualize.loadLater = false
const results = self.convertModelsToJIT(DataModel.Topics, DataModel.Synapses)
self.vizData = results[0]
// clean up the synapses array in case of any faulty data
_.each(results[1], function(synapse) {
mapping = synapse.getMapping()
DataModel.Synapses.remove(synapse)
if (DataModel.Mappings) DataModel.Mappings.remove(mapping)
})
if (self.vizData.length === 0) {
Map.setHasLearnedTopicCreation(false)
Visualize.loadLater = true
} else {
Map.setHasLearnedTopicCreation(true)
}
Visualize.render()
}, // prepareVizData
edgeRender: function(adj, canvas) {
// get nodes cartesian coordinates
const pos = adj.nodeFrom.pos.getc(true)
const posChild = adj.nodeTo.pos.getc(true)
let synapse
if (adj.getData('displayIndex')) {
synapse = adj.getData('synapses')[adj.getData('displayIndex')]
if (!synapse) {
delete adj.data.$displayIndex
synapse = adj.getData('synapses')[0]
}
} else {
synapse = adj.getData('synapses')[0]
}
if (!synapse) return // this means there are no corresponding synapses for
// this edge, don't render it
// label placement on edges
if (canvas.denySelected) {
const color = Settings.colors.synapses.normal
canvas.getCtx().fillStyle = canvas.getCtx().strokeStyle = color
}
JIT.renderEdgeArrows($jit.Graph.Plot.edgeHelper, adj, synapse, canvas)
// check for edge label in data
let desc = synapse.get('desc')
const showDesc = adj.getData('showDesc')
const drawSynapseCount = function(context, x, y, count) {
/*
circle size: 16x16px
positioning: overlay and center on top right corner of synapse label - 8px left and 8px down
color: #dab539
border color: #424242
border size: 1.5px
font: DIN medium
font-size: 14pt
font-color: #424242
*/
context.beginPath()
context.arc(x, y, 8, 0, 2 * Math.PI, false)
context.fillStyle = '#DAB539'
context.strokeStyle = '#424242'
context.lineWidth = 1.5
context.closePath()
context.fill()
context.stroke()
// add the synapse count
context.fillStyle = '#424242'
context.textAlign = 'center'
context.font = '14px din-medium'
context.fillText(count, x, y + 5)
}
if (!canvas.denySelected && desc !== '' && showDesc) {
// '&' to '&'
desc = Util.decodeEntities(desc)
// now adjust the label placement
const ctx = canvas.getCtx()
ctx.font = 'bold 14px arial'
ctx.fillStyle = '#FFF'
ctx.textBaseline = 'alphabetic'
const arrayOfLabelLines = Util.splitLine(desc, 25).split('\n')
let lineWidths = []
for (let index = 0; index < arrayOfLabelLines.length; ++index) {
lineWidths.push(ctx.measureText(arrayOfLabelLines[index]).width)
}
const width = Math.max.apply(null, lineWidths) + 16
const height = (16 * arrayOfLabelLines.length) + 8
const x = (pos.x + posChild.x - width) / 2
const y = ((pos.y + posChild.y) / 2) - height / 2
const radius = 5
// render background
ctx.beginPath()
ctx.moveTo(x + radius, y)
ctx.lineTo(x + width - radius, y)
ctx.quadraticCurveTo(x + width, y, x + width, y + radius)
ctx.lineTo(x + width, y + height - radius)
ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height)
ctx.lineTo(x + radius, y + height)
ctx.quadraticCurveTo(x, y + height, x, y + height - radius)
ctx.lineTo(x, y + radius)
ctx.quadraticCurveTo(x, y, x + radius, y)
ctx.closePath()
ctx.fill()
// get number of synapses
const synapseNum = adj.getData('synapses').length
// render text
ctx.fillStyle = '#424242'
ctx.textAlign = 'center'
for (let index = 0; index < arrayOfLabelLines.length; ++index) {
ctx.fillText(arrayOfLabelLines[index], x + (width / 2), y + 18 + (16 * index))
}
if (synapseNum > 1) {
drawSynapseCount(ctx, x + width, y, synapseNum)
}
} else if (!canvas.denySelected && showDesc) {
// get number of synapses
const synapseNum = adj.getData('synapses').length
if (synapseNum > 1) {
const ctx = canvas.getCtx()
const x = (pos.x + posChild.x) / 2
const y = (pos.y + posChild.y) / 2
drawSynapseCount(ctx, x, y, synapseNum)
}
}
}, // edgeRender
ForceDirected: {
animateSavedLayout: {
modes: ['linear'],
// TODO fix tests so we don't need _.get
transition: _.get($jit, 'Trans.Quad.easeInOut'),
duration: 800,
onComplete: function() {
Visualize.mGraph.busy = false
$(document).trigger(JIT.events.animationDone)
}
},
animateFDLayout: {
modes: ['linear'],
// TODO fix tests so we don't need _.get
transition: _.get($jit, 'Trans.Elastic.easeOut'),
duration: 800,
onComplete: function() {
Visualize.mGraph.busy = false
}
},
graphSettings: {
// id of the visualization container
injectInto: 'infovis',
// Enable zooming and panning
// by scrolling and DnD
Navigation: {
enable: true,
// Enable panning events only if we're dragging the empty
// canvas (and not a node).
panning: 'avoid nodes',
zooming: 28 // zoom speed. higher is more sensible
},
// Change node and edge styles such as
// color and width.
// These properties are also set per node
// with dollar prefixed data-properties in the
// JSON structure.
Node: {
overridable: true,
color: '#2D6A5D',
type: 'customNode',
dim: 25
},
Edge: {
overridable: true,
color: Settings.colors.synapses.normal,
type: 'customEdge',
lineWidth: 2,
alpha: 1
},
// Native canvas text styling
Label: {
type: 'Native', // Native or HTML
size: 20,
family: 'arial',
textBaseline: 'alphabetic',
color: Settings.colors.labels.text
},
// Add Tips
Tips: {
enable: false,
onShow: function(tip, node) {}
},
// Add node events
Events: {
enable: true,
enableForEdges: true,
onMouseMove: function(node, eventInfo, e) {
JIT.onMouseMoveHandler(node, eventInfo, e)
// console.log('called mouse move handler')
},
// Update node positions when dragged
onDragMove: function(node, eventInfo, e) {
JIT.onDragMoveTopicHandler(node, eventInfo, e)
// console.log('called drag move handler')
},
onDragEnd: function(node, eventInfo, e) {
JIT.onDragEndTopicHandler(node, eventInfo, e, false)
// console.log('called drag end handler')
},
onDragCancel: function(node, eventInfo, e) {
JIT.onDragCancelHandler(node, eventInfo, e, false)
},
// Implement the same handler for touchscreens
onTouchStart: function(node, eventInfo, e) {},
// Implement the same handler for touchscreens
onTouchMove: function(node, eventInfo, e) {
JIT.onDragMoveTopicHandler(node, eventInfo, e)
},
// Implement the same handler for touchscreens
onTouchEnd: function(node, eventInfo, e) {},
// Implement the same handler for touchscreens
onTouchCancel: function(node, eventInfo, e) {},
// Add also a click handler to nodes
onClick: function(node, eventInfo, e) {
// remove the rightclickmenu
ContextMenu.reset(ReactApp.render)
if (Mouse.boxStartCoordinates) {
if (e.ctrlKey) {
Visualize.mGraph.busy = false
Mouse.boxEndCoordinates = eventInfo.getPos()
const bS = Mouse.boxStartCoordinates
const bE = Mouse.boxEndCoordinates
if (Math.abs(bS.x - bE.x) > 20 && Math.abs(bS.y - bE.y) > 20) {
JIT.zoomToBox(e)
return
} else {
Mouse.boxStartCoordinates = null
Mouse.boxEndCoordinates = null
}
}
if (e.shiftKey) {
Visualize.mGraph.busy = false
Mouse.boxEndCoordinates = eventInfo.getPos()
JIT.selectWithBox(e)
return
}
}
if (e.target.id !== 'infovis-canvas') return false
// clicking on a edge, node, or clicking on blank part of canvas?
if (node.nodeFrom) {
JIT.selectEdgeOnClickHandler(node, e)
} else if (node && !node.nodeFrom) {
JIT.selectNodeOnClickHandler(node, e)
} else {
JIT.canvasClickHandler(eventInfo.getPos(), e)
} // if
},
// Add also a click handler to nodes
onRightClick: function(node, eventInfo, e) {
// remove the rightclickmenu
ContextMenu.reset(ReactApp.render)
if (Mouse.boxStartCoordinates) {
Create.newSynapse.hide()
Create.newTopic.hide()
Visualize.mGraph.busy = false
Mouse.boxEndCoordinates = eventInfo.getPos()
JIT.selectWithBox(e)
return
}
if (e.target.id !== 'infovis-canvas') return false
// clicking on a edge, node, or clicking on blank part of canvas?
if (node.nodeFrom) {
JIT.selectEdgeOnRightClickHandler(node, e)
} else if (node && !node.nodeFrom) {
JIT.selectNodeOnRightClickHandler(node, e)
} else {
// right click open space
Create.newSynapse.hide()
Create.newTopic.hide()
}
}
},
// Number of iterations for the FD algorithm
iterations: 200,
// Edge length
levelDistance: 200
},
nodeSettings: {
'customNode': {
'render': function(node, canvas) {
const pos = node.pos.getc(true)
const dim = node.getData('dim')
const topic = node.getData('topic')
const metacode = topic ? topic.getMetacode() : false
const ctx = canvas.getCtx()
// if the topic is selected draw a circle around it
if (!canvas.denySelected && node.selected) {
ctx.beginPath()
ctx.arc(pos.x, pos.y, dim + 3, 0, 2 * Math.PI, false)
ctx.strokeStyle = Settings.colors.topics.selected
ctx.lineWidth = 2
ctx.stroke()
}
if (!metacode ||
!metacode.get('image') ||
!metacode.get('image').complete ||
(typeof metacode.get('image').naturalWidth !== 'undefined' &&
metacode.get('image').naturalWidth === 0)) {
ctx.beginPath()
ctx.arc(pos.x, pos.y, dim, 0, 2 * Math.PI, false)
ctx.fillStyle = '#B6B2FD'
ctx.fill()
} else {
ctx.drawImage(metacode.get('image'), pos.x - dim, pos.y - dim, dim * 2, dim * 2)
}
// if the topic has a link, draw a small image to indicate that
const hasLink = topic && topic.get('link') !== '' && topic.get('link') !== null
const linkImage = JIT.topicLinkImage
const linkImageLoaded = linkImage.complete ||
(typeof linkImage.naturalWidth !== 'undefined' &&
linkImage.naturalWidth !== 0)
if (hasLink && linkImageLoaded) {
ctx.drawImage(linkImage, pos.x - dim - 8, pos.y - dim - 8, 16, 16)
}
// if the topic has a desc, draw a small image to indicate that
const hasDesc = topic && topic.get('desc') !== '' && topic.get('desc') !== null
const descImage = JIT.topicDescImage
const descImageLoaded = descImage.complete ||
(typeof descImage.naturalWidth !== 'undefined' &&
descImage.naturalWidth !== 0)
if (hasDesc && descImageLoaded) {
ctx.drawImage(descImage, pos.x + dim - 8, pos.y - dim - 8, 16, 16)
}
},
'contains': function(node, pos) {
const npos = node.pos.getc(true)
const dim = node.getData('dim')
const arrayOfLabelLines = Util.splitLine(node.name, 25).split('\n')
const ctx = Visualize.mGraph.canvas.getCtx()
const height = 25 * arrayOfLabelLines.length
let lineWidths = []
for (let index = 0; index < arrayOfLabelLines.length; ++index) {
lineWidths.push(ctx.measureText(arrayOfLabelLines[index]).width)
}
const width = Math.max.apply(null, lineWidths) + 8
const labely = npos.y + node.getData('height') + 5 + height / 2
const overLabel = this.nodeHelper.rectangle.contains({
x: npos.x,
y: labely
}, pos, width, height)
return this.nodeHelper.circle.contains(npos, pos, dim) || overLabel
}
}
},
edgeSettings: {
'customEdge': {
'render': function(adj, canvas) {
JIT.edgeRender(adj, canvas)
},
'contains': function(adj, pos) {
const from = adj.nodeFrom.pos.getc()
const to = adj.nodeTo.pos.getc()
// this fixes an issue where when edges are perfectly horizontal or perfectly vertical
// it becomes incredibly difficult to hover over them
if (-1 < pos.x && pos.x < 1) pos.x = 0
if (-1 < pos.y && pos.y < 1) pos.y = 0
return $jit.Graph.Plot.edgeHelper.line.contains(from, to, pos, adj.Edge.epsilon + 5)
}
}
}
}, // ForceDirected
ForceDirected3D: {
animate: {
modes: ['linear'],
// TODO fix tests so we don't need _.get
transition: _.get($jit, 'Trans.Elastic.easeOut'),
duration: 2500,
onComplete: function() {
Visualize.mGraph.busy = false
}
},
graphSettings: {
// id of the visualization container
injectInto: 'infovis',
type: '3D',
Scene: {
Lighting: {
enable: false,
ambient: [0.5, 0.5, 0.5],
directional: {
direction: {
x: 1,
y: 0,
z: -1
},
color: [0.9, 0.9, 0.9]
}
}
},
// Enable zooming and panning
// by scrolling and DnD
Navigation: {
enable: false,
// Enable panning events only if we're dragging the empty
// canvas (and not a node).
panning: 'avoid nodes',
zooming: 10 // zoom speed. higher is more sensible
},
// Change node and edge styles such as
// color and width.
// These properties are also set per node
// with dollar prefixed data-properties in the
// JSON structure.
Node: {
overridable: true,
type: 'sphere',
dim: 15,
color: '#ffffff'
},
Edge: {
overridable: false,
type: 'tube',
color: '#111',
lineWidth: 3
},
// Native canvas text styling
Label: {
type: 'HTML', // Native or HTML
size: 10,
style: 'bold'
},
// Add node events
Events: {
enable: true,
type: 'Native',
i: 0,
onMouseMove: function(node, eventInfo, e) {
// if(this.i++ % 3) return
const pos = eventInfo.getPos()
Visualize.cameraPosition.x += (pos.x - Visualize.cameraPosition.x) * 0.5
Visualize.cameraPosition.y += (-pos.y - Visualize.cameraPosition.y) * 0.5
Visualize.mGraph.plot()
},
onMouseWheel: function(delta) {
Visualize.cameraPosition.z += -delta * 20
Visualize.mGraph.plot()
},
onClick: function() {}
},
// Number of iterations for the FD algorithm
iterations: 200,
// Edge length
levelDistance: 100
},
nodeSettings: {
},
edgeSettings: {
}
}, // ForceDirected3D
RGraph: {
animate: {
modes: ['polar'],
duration: 800,
onComplete: function() {
Visualize.mGraph.busy = false
}
},
// this will just be used to patch the ForceDirected graphsettings with the few things which actually differ
background: {
levelDistance: 200,
numberOfCircles: 4,
CanvasStyles: {
strokeStyle: '#333',
lineWidth: 1.5
}
},
levelDistance: 200
},
onMouseEnter: function(edge) {
const filtered = edge.getData('alpha') === 0
// don't do anything if the edge is filtered
// or if the canvas is animating
if (filtered || Visualize.mGraph.busy) return
$('canvas').css('cursor', 'pointer')
const edgeIsSelected = Selected.Edges.indexOf(edge)
// following if statement only executes if the edge being hovered over is not selected
if (edgeIsSelected === -1) {
edge.setData('showDesc', true, 'current')
}
edge.setDataset('end', {
lineWidth: 4
})
Visualize.mGraph.fx.animate({
modes: ['edge-property:lineWidth'],
duration: 100
})
Visualize.mGraph.plot()
}, // onMouseEnter
onMouseLeave: function(edge) {
if (edge.getData('alpha') === 0) return // don't do anything if the edge is filtered
$('canvas').css('cursor', 'default')
const edgeIsSelected = Selected.Edges.indexOf(edge)
// following if statement only executes if the edge being hovered over is not selected
if (edgeIsSelected === -1) {
edge.setData('showDesc', false, 'current')
}
edge.setDataset('end', {
lineWidth: 2
})
Visualize.mGraph.fx.animate({
modes: ['edge-property:lineWidth'],
duration: 100
})
Visualize.mGraph.plot()
}, // onMouseLeave
onMouseMoveHandler: function(_node, eventInfo, e) {
const self = JIT
if (Visualize.mGraph.busy) return
const node = eventInfo.getNode()
const edge = eventInfo.getEdge()
// if we're on top of a node object, act like there aren't edges under it
if (node !== false) {
if (Mouse.edgeHoveringOver) {
self.onMouseLeave(Mouse.edgeHoveringOver)
}
$('canvas').css('cursor', 'pointer')
return
}
if (edge === false && Mouse.edgeHoveringOver !== false) {
// mouse not on an edge, but we were on an edge previously
self.onMouseLeave(Mouse.edgeHoveringOver)
} else if (edge !== false && Mouse.edgeHoveringOver === false) {
// mouse is on an edge, but there isn't a stored edge
self.onMouseEnter(edge)
} else if (edge !== false && Mouse.edgeHoveringOver !== edge) {
// mouse is on an edge, but a different edge is stored
self.onMouseLeave(Mouse.edgeHoveringOver)
self.onMouseEnter(edge)
}
// could be false
Mouse.edgeHoveringOver = edge
if (!node && !edge) {
$('canvas').css('cursor', 'default')
}
}, // onMouseMoveHandler
enterKeyHandler: function() {
const creatingMap = GlobalUI.lightbox
if (creatingMap === 'newmap' || creatingMap === 'forkmap') {
GlobalUI.CreateMap.submit()
} else if (Create.newTopic.beingCreated) {
Topic.createTopicLocally()
} else if (Create.newSynapse.beingCreated) {
Synapse.createSynapseLocally()
}
}, // enterKeyHandler
escKeyHandler: function() {
Control.deselectAllEdges()
Control.deselectAllNodes()
}, // escKeyHandler
onDragMoveTopicHandler: function(node, eventInfo, e) {
var self = JIT
var authorized = Active.Map && Active.Map.authorizeToEdit(Active.Mapper)
if (node && !node.nodeFrom) {
self.handleSelectionBeforeDragging(node, e)
const pos = eventInfo.getPos()
const EDGE_THICKNESS = 30
const SHIFT = 2 / Visualize.mGraph.canvas.scaleOffsetX
const PERIOD = 5
// self.virtualPointer = pos;
// if it's a left click, or a touch, move the node
if (e.touches || (e.button === 0 && !e.altKey && !e.ctrlKey && (e.buttons === 0 || e.buttons === 1 || e.buttons === undefined))) {
const width = Visualize.mGraph.canvas.getSize().width
const height = Visualize.mGraph.canvas.getSize().height
const xPix = Util.coordsToPixels(Visualize.mGraph, pos).x
const yPix = Util.coordsToPixels(Visualize.mGraph, pos).y
if (self.dragFlag === 0) {
self.mouseDownPix = Util.coordsToPixels(Visualize.mGraph, eventInfo.getPos())
self.dragFlag = 1
}
if (Util.getDistance(Util.coordsToPixels(Visualize.mGraph, pos), self.mouseDownPix) > 2 && !self.dragTolerance) {
self.dragTolerance = 1
}
if (xPix < EDGE_THICKNESS && self.dragTolerance) {
clearInterval(self.dragLeftEdge)
clearInterval(self.dragRightEdge)
clearInterval(self.dragTopEdge)
clearInterval(self.dragBottomEdge)
self.virtualPointer = { x: Util.pixelsToCoords(Visualize.mGraph, { x: EDGE_THICKNESS, y: yPix }).x - SHIFT, y: pos.y }
Visualize.mGraph.canvas.translate(SHIFT, 0)
self.updateTopicPositions(node, self.virtualPointer)
Visualize.mGraph.plot()
self.dragLeftEdge = setInterval(function() {
self.virtualPointer = { x: Util.pixelsToCoords(Visualize.mGraph, { x: EDGE_THICKNESS, y: yPix }).x - SHIFT, y: pos.y }
Visualize.mGraph.canvas.translate(SHIFT, 0)
self.updateTopicPositions(node, self.virtualPointer)
Visualize.mGraph.plot()
}, PERIOD)
}
if (width - xPix < EDGE_THICKNESS && self.dragTolerance) {
clearInterval(self.dragLeftEdge)
clearInterval(self.dragRightEdge)
clearInterval(self.dragTopEdge)
clearInterval(self.dragBottomEdge)
self.virtualPointer = { x: Util.pixelsToCoords(Visualize.mGraph, { x: width - EDGE_THICKNESS, y: yPix }).x + SHIFT, y: pos.y }
Visualize.mGraph.canvas.translate(-SHIFT, 0)
self.updateTopicPositions(node, self.virtualPointer)
Visualize.mGraph.plot()
self.dragRightEdge = setInterval(function() {
self.virtualPointer = { x: Util.pixelsToCoords(Visualize.mGraph, { x: width - EDGE_THICKNESS, y: yPix }).x + SHIFT, y: pos.y }
Visualize.mGraph.canvas.translate(-SHIFT, 0)
self.updateTopicPositions(node, self.virtualPointer)
Visualize.mGraph.plot()
}, PERIOD)
}
if (yPix < EDGE_THICKNESS && self.dragTolerance) {
clearInterval(self.dragLeftEdge)
clearInterval(self.dragRightEdge)
clearInterval(self.dragTopEdge)
clearInterval(self.dragBottomEdge)
self.virtualPointer = { x: pos.x, y: Util.pixelsToCoords(Visualize.mGraph, { x: xPix, y: EDGE_THICKNESS }).y - SHIFT }
Visualize.mGraph.canvas.translate(0, SHIFT)
self.updateTopicPositions(node, self.virtualPointer)
Visualize.mGraph.plot()
self.dragTopEdge = setInterval(function() {
self.virtualPointer = { x: pos.x, y: Util.pixelsToCoords(Visualize.mGraph, { x: xPix, y: EDGE_THICKNESS }).y - SHIFT }
Visualize.mGraph.canvas.translate(0, SHIFT)
self.updateTopicPositions(node, self.virtualPointer)
Visualize.mGraph.plot()
}, PERIOD)
}
if (height - yPix < EDGE_THICKNESS && self.dragTolerance) {
clearInterval(self.dragLeftEdge)
clearInterval(self.dragRightEdge)
clearInterval(self.dragTopEdge)
clearInterval(self.dragBottomEdge)
self.virtualPointer = { x: pos.x, y: Util.pixelsToCoords(Visualize.mGraph, { x: xPix, y: height - EDGE_THICKNESS }).y + SHIFT }
Visualize.mGraph.canvas.translate(0, -SHIFT)
self.updateTopicPositions(node, self.virtualPointer)
Visualize.mGraph.plot()
self.dragBottomEdge = setInterval(function() {
self.virtualPointer = { x: pos.x, y: Util.pixelsToCoords(Visualize.mGraph, { x: xPix, y: height - EDGE_THICKNESS }).y + SHIFT }
Visualize.mGraph.canvas.translate(0, -SHIFT)
self.updateTopicPositions(node, self.virtualPointer)
Visualize.mGraph.plot()
}, PERIOD)
}
if (xPix >= EDGE_THICKNESS && width - xPix >= EDGE_THICKNESS && yPix >= EDGE_THICKNESS && height - yPix >= EDGE_THICKNESS) {
clearInterval(self.dragLeftEdge)
clearInterval(self.dragRightEdge)
clearInterval(self.dragTopEdge)
clearInterval(self.dragBottomEdge)
self.updateTopicPositions(node, pos)
Visualize.mGraph.plot()
}
} else if ((e.button === 2 || (e.button === 0 && e.altKey) || e.buttons === 2) && authorized) {
// if it's a right click or holding down alt, start synapse creation ->third option is for firefox
if (JIT.tempInit === false) {
JIT.tempNode = node
JIT.tempInit = true
Create.newTopic.hide()
Create.newSynapse.hide()
// set the draw synapse start positions
var l = Selected.Nodes.length
if (l > 0) {
for (let i = l - 1; i >= 0; i -= 1) {
const n = Selected.Nodes[i]
Mouse.synapseStartCoordinates.push({
x: n.pos.getc().x,
y: n.pos.getc().y
})
}
} else {
Mouse.synapseStartCoordinates = [{
x: JIT.tempNode.pos.getc().x,
y: JIT.tempNode.pos.getc().y
}]
}
Mouse.synapseEndCoordinates = {
x: pos.x,
y: pos.y
}
}
//
let temp = eventInfo.getNode()
if (temp !== false && temp.id !== node.id && Selected.Nodes.indexOf(temp) === -1) { // this means a Node has been returned
JIT.tempNode2 = temp
Mouse.synapseEndCoordinates = {
x: JIT.tempNode2.pos.getc().x,
y: JIT.tempNode2.pos.getc().y
}
// before making the highlighted one bigger, make sure all the others are regular size
Visualize.mGraph.graph.eachNode(function(n) {
n.setData('dim', 25, 'current')
})
temp.setData('dim', 35, 'current')
Visualize.mGraph.plot()
} else if (!temp) {
JIT.tempNode2 = null
Visualize.mGraph.graph.eachNode(function(n) {
n.setData('dim', 25, 'current')
})
// pop up node creation :)
var myX = e.clientX - 110
var myY = e.clientY - 30
$('#new_topic').css('left', myX + 'px')
$('#new_topic').css('top', myY + 'px')
Create.newTopic.x = eventInfo.getPos().x
Create.newTopic.y = eventInfo.getPos().y
Visualize.mGraph.plot()
Mouse.synapseEndCoordinates = {
x: pos.x,
y: pos.y
}
}
} else if ((e.button === 2 || (e.button === 0 && e.altKey) || e.buttons === 2) && Active.Topic) {
GlobalUI.notifyUser('Cannot create in Topic view.')
} else if ((e.button === 2 || (e.button === 0 && e.altKey) || e.buttons === 2) && !authorized) {
GlobalUI.notifyUser('Cannot edit this map.')
}
}
}, // onDragMoveTopicHandler
onDragCancelHandler: function(node, eventInfo, e) {
JIT.tempNode = null
if (JIT.tempNode2) JIT.tempNode2.setData('dim', 25, 'current')
JIT.tempNode2 = null
JIT.tempInit = false
// reset the draw synapse positions to false
Mouse.synapseStartCoordinates = []
Mouse.synapseEndCoordinates = null
Visualize.mGraph.plot()
}, // onDragCancelHandler
onDragEndTopicHandler: function(node, eventInfo, e) {
const self = JIT
const midpoint = {}
let pixelPos
let mapping
clearInterval(self.dragLeftEdge)
clearInterval(self.dragRightEdge)
clearInterval(self.dragTopEdge)
clearInterval(self.dragBottomEdge)
delete self.dragLeftEdge
delete self.dragRightEdge
delete self.dragTopEdge
delete self.dragBottomEdge
self.dragFlag = 0
self.dragTolerance = 0
if (JIT.tempInit && JIT.tempNode2 === null) {
// this means you want to add a new topic, and then a synapse
Create.newTopic.addSynapse = true
Create.newTopic.open()
} else if (JIT.tempInit && JIT.tempNode2 !== null) {
// this means you want to create a synapse between two existing topics
Create.newTopic.addSynapse = false
Create.newSynapse.topic1id = JIT.tempNode.getData('topic').id
Create.newSynapse.topic2id = JIT.tempNode2.getData('topic').id
JIT.tempNode2.setData('dim', 25, 'current')
Visualize.mGraph.plot()
midpoint.x = JIT.tempNode.pos.getc().x + (JIT.tempNode2.pos.getc().x - JIT.tempNode.pos.getc().x) / 2
midpoint.y = JIT.tempNode.pos.getc().y + (JIT.tempNode2.pos.getc().y - JIT.tempNode.pos.getc().y) / 2
pixelPos = Util.coordsToPixels(Visualize.mGraph, midpoint)
$('#new_synapse').css('left', pixelPos.x + 'px')
$('#new_synapse').css('top', pixelPos.y + 'px')
Create.newSynapse.open()
JIT.tempNode = null
JIT.tempNode2 = null
JIT.tempInit = false
} else if (!JIT.tempInit && node && !node.nodeFrom) {
// this means you dragged an existing node, autosave that to the database
// check whether to save mappings
const checkWhetherToSave = function() {
const map = Active.Map
if (!map) return false
return map.authorizeToEdit(Active.Mapper)
}
if (checkWhetherToSave()) {
if (Active.Mapper.get('follow_map_on_contributed')) {
Active.Mapper.followMap(Active.Map.id)
}
mapping = node.getData('mapping')
mapping.save({
xloc: node.getPos().x,
yloc: node.getPos().y
})
// also save any other selected nodes that also got dragged along
const l = Selected.Nodes.length
for (var i = l - 1; i >= 0; i -= 1) {
const n = Selected.Nodes[i]
if (n !== node) {
mapping = n.getData('mapping')
mapping.save({
xloc: n.getPos().x,
yloc: n.getPos().y
})
}
}
}
}
}, // onDragEndTopicHandler
canvasClickHandler: function(canvasLoc, e) {
// grab the location and timestamp of the click
const storedTime = Mouse.lastCanvasClick
const now = Date.now() // not compatible with IE8 FYI
Mouse.lastCanvasClick = now
const authorized = Active.Map && Active.Map.authorizeToEdit(Active.Mapper)
if (now - storedTime < Mouse.DOUBLE_CLICK_TOLERANCE && !Mouse.didPan) {
if (Active.Map && !authorized) {
GlobalUI.notifyUser('Cannot edit Public map.')
return
} else if (Active.Topic) {
GlobalUI.notifyUser('Cannot create in Topic view.')
return
}
// DOUBLE CLICK
// pop up node creation :)
Create.newTopic.addSynapse = false
Create.newTopic.x = canvasLoc.x
Create.newTopic.y = canvasLoc.y
$('#new_topic').css('left', e.clientX + 'px')
$('#new_topic').css('top', e.clientY + 'px')
Create.newTopic.open()
} else if (!Mouse.didPan) {
// SINGLE CLICK, no pan
TopicCard.hideCard()
SynapseCard.hideCard()
Create.newTopic.hide()
ContextMenu.reset(ReactApp.render)
// reset the draw synapse positions to false
Mouse.synapseStartCoordinates = []
Mouse.synapseEndCoordinates = null
JIT.tempInit = false
JIT.tempNode = null
JIT.tempNode2 = null
if (!e.ctrlKey && !e.shiftKey) {
Control.deselectAllEdges()
Control.deselectAllNodes()
}
} else {
// SINGLE CLICK, resulting from pan
Create.newTopic.hide()
}
}, // canvasClickHandler
updateTopicPositions: function(node, pos) {
const len = Selected.Nodes.length
// this is used to send nodes that are moving to
// other realtime collaborators on the same map
const positionsToSend = {}
// first define offset for each node
var xOffset = []
var yOffset = []
for (let i = 0; i < len; i += 1) {
const n = Selected.Nodes[i]
xOffset[i] = n.pos.getc().x - node.pos.getc().x
yOffset[i] = n.pos.getc().y - node.pos.getc().y
} // for
for (let i = 0; i < len; i += 1) {
const n = Selected.Nodes[i]
const x = pos.x + xOffset[i]
const y = pos.y + yOffset[i]
if (n.pos.rho || n.pos.rho === 0) {
// this means we're in topic view
const rho = Math.sqrt(x * x + y * y)
const theta = Math.atan2(y, x)
n.pos.setp(theta, rho)
} else {
n.pos.setc(x, y)
}
if (Active.Map) {
const topic = n.getData('topic')
// we use the topic ID not the node id
// because we can't depend on the node id
// to be the same as on other collaborators
// maps
positionsToSend[topic.id] = n.pos
}
} // for
if (Active.Map) {
$(document).trigger(JIT.events.topicDrag, [positionsToSend])
}
},
nodeDoubleClickHandler: function(node, e) {
TopicCard.showCard(node)
}, // nodeDoubleClickHandler
edgeDoubleClickHandler: function(adj, e) {
SynapseCard.showCard(adj, e)
}, // nodeDoubleClickHandler
nodeWasDoubleClicked: function() {
// grab the timestamp of the click
const storedTime = Mouse.lastNodeClick
const now = Date.now() // not compatible with IE8 FYI
Mouse.lastNodeClick = now
if (now - storedTime < Mouse.DOUBLE_CLICK_TOLERANCE) {
return true
} else {
return false
}
}, // nodeWasDoubleClicked
handleSelectionBeforeDragging: function(node, e) {
if (Selected.Nodes.length === 0) {
Control.selectNode(node, e)
}
if (Selected.Nodes.indexOf(node) === -1) {
if (e.shiftKey) {
Control.selectNode(node, e)
} else {
Control.deselectAllEdges()
Control.deselectAllNodes()
Control.selectNode(node, e)
}
}
}, // handleSelectionBeforeDragging
getNodeXY: function(node) {
if (typeof node.pos.x === 'number' && typeof node.pos.y === 'number') {
return node.pos
} else if (typeof node.pos.theta === 'number' && typeof node.pos.rho === 'number') {
return new $jit.Polar(node.pos.theta, node.pos.rho).getc(true)
} else {
console.error('getNodeXY: unrecognized node pos format')
return {}
}
},
selectWithBox: function(e) {
const self = this
let sX = Mouse.boxStartCoordinates.x
let sY = Mouse.boxStartCoordinates.y
let eX = Mouse.boxEndCoordinates.x
let eY = Mouse.boxEndCoordinates.y
if (!e.shiftKey) {
Control.deselectAllNodes()
Control.deselectAllEdges()
}
// select all nodes that are within the box
Visualize.mGraph.graph.eachNode(function(n) {
const pos = self.getNodeXY(n)
const x = pos.x
const y = pos.y
// depending on which way the person dragged the box, check that
// x and y are between the start and end values of the box
if ((sX < x && x < eX && sY < y && y < eY) ||
(sX > x && x > eX && sY > y && y > eY) ||
(sX > x && x > eX && sY < y && y < eY) ||
(sX < x && x < eX && sY > y && y > eY)) {
if (e.shiftKey) {
if (n.selected) {
Control.deselectNode(n)
} else {
Control.selectNode(n, e)
}
} else {
Control.selectNode(n, e)
}
}
})
// Convert selection box coordinates to traditional coordinates (+,+) in upper right
sY = -1 * sY
eY = -1 * eY
const edgesToToggle = []
DataModel.Synapses.each(function(synapse) {
const e = synapse.get('edge')
if (edgesToToggle.indexOf(e) === -1) {
edgesToToggle.push(e)
}
})
edgesToToggle.forEach(function(edge) {
const fromNodePos = self.getNodeXY(edge.nodeFrom)
const fromNodeX = fromNodePos.x
const fromNodeY = -1 * fromNodePos.y
const toNodePos = self.getNodeXY(edge.nodeTo)
const toNodeX = toNodePos.x
const toNodeY = -1 * toNodePos.y
let maxX = fromNodeX
let maxY = fromNodeY
let minX = fromNodeX
let minY = fromNodeY
// Correct maxX, MaxY values
;(toNodeX > maxX) ? (maxX = toNodeX) : (minX = toNodeX)
;(toNodeY > maxY) ? (maxY = toNodeY) : (minY = toNodeY)
let maxBoxX = sX
let maxBoxY = sY
let minBoxX = sX
let minBoxY = sY
// Correct maxBoxX, maxBoxY values
;(eX > maxBoxX) ? (maxBoxX = eX) : (minBoxX = eX)
;(eY > maxBoxY) ? (maxBoxY = eY) : (minBoxY = eY)
// Find the slopes from the synapse fromNode to the 4 corners of the selection box
const slopes = []
slopes.push((sY - fromNodeY) / (sX - fromNodeX))
slopes.push((sY - fromNodeY) / (eX - fromNodeX))
slopes.push((eY - fromNodeY) / (eX - fromNodeX))
slopes.push((eY - fromNodeY) / (sX - fromNodeX))
let minSlope = slopes[0]
let maxSlope = slopes[0]
slopes.forEach(function(entry) {
if (entry > maxSlope) maxSlope = entry
if (entry < minSlope) minSlope = entry
})
// Find synapse-in-question's slope
const synSlope = (toNodeY - fromNodeY) / (toNodeX - fromNodeX)
const b = fromNodeY - synSlope * fromNodeX
// Use the selection box edges as test cases for synapse intersection
let testX = sX
let testY = synSlope * testX + b
let selectTest
if (testX >= minX && testX <= maxX && testY >= minY && testY <= maxY && testY >= minBoxY && testY <= maxBoxY) {
selectTest = true
}
testX = eX
testY = synSlope * testX + b
if (testX >= minX && testX <= maxX && testY >= minY && testY <= maxY && testY >= minBoxY && testY <= maxBoxY) {
selectTest = true
}
testY = sY
testX = (testY - b) / synSlope
if (testX >= minX && testX <= maxX && testY >= minY && testY <= maxY && testX >= minBoxX && testX <= maxBoxX) {
selectTest = true
}
testY = eY
testX = (testY - b) / synSlope
if (testX >= minX && testX <= maxX && testY >= minY && testY <= maxY && testX >= minBoxX && testX <= maxBoxX) {
selectTest = true
}
// Case where the synapse is wholly enclosed in the seldction box
if (fromNodeX >= minBoxX && fromNodeX <= maxBoxX && fromNodeY >= minBoxY && fromNodeY <= maxBoxY && toNodeX >= minBoxX && toNodeX <= maxBoxX && toNodeY >= minBoxY && toNodeY <= maxBoxY) {
selectTest = true
}
// The test synapse was selected!
if (selectTest) {
// shiftKey = toggleSelect, otherwise
if (e.shiftKey) {
if (Selected.Edges.indexOf(edge) !== -1) {
Control.deselectEdge(edge)
} else {
Control.selectEdge(edge)
}
} else {
Control.selectEdge(edge)
}
}
})
Mouse.boxStartCoordinates = false
Mouse.boxEndCoordinates = false
Visualize.mGraph.plot()
}, // selectWithBox
drawSelectBox: function(eventInfo, e) {
const ctx = Visualize.mGraph.canvas.getCtx()
const startX = Mouse.boxStartCoordinates.x
const startY = Mouse.boxStartCoordinates.y
const currX = eventInfo.getPos().x
const currY = eventInfo.getPos().y
Visualize.mGraph.canvas.clear()
Visualize.mGraph.plot()
ctx.beginPath()
ctx.moveTo(startX, startY)
ctx.lineTo(startX, currY)
ctx.lineTo(currX, currY)
ctx.lineTo(currX, startY)
ctx.lineTo(startX, startY)
ctx.strokeStyle = 'black'
ctx.stroke()
}, // drawSelectBox
selectNodeOnClickHandler: function(node, e) {
if (Visualize.mGraph.busy) return
const self = JIT
// Copy topic title to clipboard
if (e.button === 1 && e.ctrlKey) clipboard.copy(node.name)
// catch right click on mac, which is often like ctrl+click
if (navigator.platform.indexOf('Mac') !== -1 && e.ctrlKey) {
self.selectNodeOnRightClickHandler(node, e)
return
}
// if on a topic page, let alt+click center you on a new topic
if (Active.Topic && e.altKey) {
JIT.RGraph.centerOn(node.id)
return
}
const check = self.nodeWasDoubleClicked()
if (check) {
self.nodeDoubleClickHandler(node, e)
return
} else {
// wait a certain length of time, then check again, then run this code
setTimeout(function() {
if (!JIT.nodeWasDoubleClicked()) {
var nodeAlreadySelected = node.selected
if (e.button !== 1) {
if (!e.shiftKey) {
Control.deselectAllNodes()
Control.deselectAllEdges()
}
if (nodeAlreadySelected) {
Control.deselectNode(node)
} else {
Control.selectNode(node, e)
}
// trigger animation to final styles
Visualize.mGraph.fx.animate({
modes: ['edge-property:lineWidth:color:alpha'],
duration: 500
})
Visualize.mGraph.plot()
} else {
if (!e.ctrlKey) {
var len = Selected.Nodes.length
for (let i = 0; i < len; i += 1) {
let n = Selected.Nodes[i]
let result = Util.openLink(DataModel.Topics.get(n.id).attributes.link)
if (!result) { // if link failed to open
break
}
}
if (!node.selected) {
Util.openLink(DataModel.Topics.get(node.id).attributes.link)
}
}
}
}
}, Mouse.DOUBLE_CLICK_TOLERANCE)
}
}, // selectNodeOnClickHandler
selectNodeOnRightClickHandler: function(node, e) {
// the 'node' variable is a JIT node, the one that was clicked on
// the 'e' variable is the click event
e.preventDefault()
e.stopPropagation()
if (Visualize.mGraph.busy) return
Control.selectNode(node, e)
ContextMenu.selectNode(ReactApp.render, node, {x: e.clientX, y: e.clientY})
}, // selectNodeOnRightClickHandler,
selectEdgeOnClickHandler: function(adj, e) {
if (Visualize.mGraph.busy) return
const self = JIT
var synapseText = adj.data.$synapses[0].attributes.desc
// Copy synapse label to clipboard
if (e.button === 1 && e.ctrlKey && synapseText !== '') clipboard.copy(synapseText)
// catch right click on mac, which is often like ctrl+click
if (navigator.platform.indexOf('Mac') !== -1 && e.ctrlKey) {
self.selectEdgeOnRightClickHandler(adj, e)
return
}
const check = self.nodeWasDoubleClicked()
if (check) {
self.edgeDoubleClickHandler(adj, e)
return
} else {
// wait a certain length of time, then check again, then run this code
setTimeout(function() {
if (!JIT.nodeWasDoubleClicked()) {
const edgeAlreadySelected = Selected.Edges.indexOf(adj) !== -1
if (!e.shiftKey) {
Control.deselectAllNodes()
Control.deselectAllEdges()
}
if (edgeAlreadySelected) {
Control.deselectEdge(adj)
} else {
Control.selectEdge(adj)
}
Visualize.mGraph.plot()
}
}, Mouse.DOUBLE_CLICK_TOLERANCE)
}
}, // selectEdgeOnClickHandler
selectEdgeOnRightClickHandler: function(adj, e) {
// the 'adj' variable is a JIT adjacency, the one that was clicked on
// the 'e' variable is the click event
if (adj.getData('alpha') === 0) return // don't do anything if the edge is filtered
e.preventDefault()
e.stopPropagation()
if (Visualize.mGraph.busy) return
Control.selectEdge(adj)
ContextMenu.selectEdge(ReactApp.render, adj, {x: e.clientX, y: e.clientY})
}, // selectEdgeOnRightClickHandler
SmoothPanning: function() {
const sx = Visualize.mGraph.canvas.scaleOffsetX
const sy = Visualize.mGraph.canvas.scaleOffsetY
const yVelocity = Mouse.changeInY // initial y velocity
const xVelocity = Mouse.changeInX // initial x velocity
let easing = 1 // frictional value
window.clearInterval(panningInt)
panningInt = setInterval(function() {
myTimer()
}, 1)
function myTimer() {
Visualize.mGraph.canvas.translate(xVelocity * easing * 1 / sx, yVelocity * easing * 1 / sy)
$(document).trigger(JIT.events.pan)
easing = easing * 0.75
if (easing < 0.1) window.clearInterval(panningInt)
}
}, // SmoothPanning
renderMidArrow: function(from, to, dim, swap, canvas, placement, newSynapse) {
const ctx = canvas.getCtx()
// invert edge direction
if (swap) {
const tmp = from
from = to
to = tmp
}
// vect represents a line from tip to tail of the arrow
const vect = new $jit.Complex(to.x - from.x, to.y - from.y)
// scale it
vect.$scale(dim / vect.norm())
// compute the midpoint of the edge line
const newX = (to.x - from.x) * placement + from.x
const newY = (to.y - from.y) * placement + from.y
const midPoint = new $jit.Complex(newX, newY)
// move midpoint by half the "length" of the arrow so the arrow is centered on the midpoint
const arrowPoint = new $jit.Complex((vect.x / 0.7) + midPoint.x, (vect.y / 0.7) + midPoint.y)
// compute the tail intersection point with the edge line
const intermediatePoint = new $jit.Complex(arrowPoint.x - vect.x, arrowPoint.y - vect.y)
// vector perpendicular to vect
const normal = new $jit.Complex(-vect.y / 2, vect.x / 2)
const v1 = intermediatePoint.add(normal)
const v2 = intermediatePoint.$add(normal.$scale(-1))
if (newSynapse) {
ctx.strokeStyle = '#4fc059'
ctx.lineWidth = 2
ctx.globalAlpha = 1
}
ctx.beginPath()
ctx.moveTo(from.x, from.y)
ctx.lineTo(to.x, to.y)
ctx.stroke()
ctx.beginPath()
ctx.moveTo(v1.x, v1.y)
ctx.lineTo(arrowPoint.x, arrowPoint.y)
ctx.lineTo(v2.x, v2.y)
ctx.stroke()
}, // renderMidArrow
renderEdgeArrows: function(edgeHelper, adj, synapse, canvas) {
const self = JIT
const directionCat = synapse.get('category')
const direction = synapse.getDirection()
const pos = adj.nodeFrom.pos.getc(true)
const posChild = adj.nodeTo.pos.getc(true)
// plot arrow edge
if (!direction) {
// render nothing for this arrow if the direction couldn't be retrieved
} else if (directionCat === 'none') {
edgeHelper.line.render({
x: pos.x,
y: pos.y
}, {
x: posChild.x,
y: posChild.y
}, canvas)
} else if (directionCat === 'both') {
self.renderMidArrow({
x: pos.x,
y: pos.y
}, {
x: posChild.x,
y: posChild.y
}, 13, true, canvas, 0.7)
self.renderMidArrow({
x: pos.x,
y: pos.y
}, {
x: posChild.x,
y: posChild.y
}, 13, false, canvas, 0.7)
} else if (directionCat === 'from-to') {
const inv = (direction[0] !== adj.nodeFrom.id)
self.renderMidArrow({
x: pos.x,
y: pos.y
}, {
x: posChild.x,
y: posChild.y
}, 13, inv, canvas, 0.7)
self.renderMidArrow({
x: pos.x,
y: pos.y
}, {
x: posChild.x,
y: posChild.y
}, 13, inv, canvas, 0.3)
}
}, // renderEdgeArrows
zoomIn: function(event) {
Visualize.mGraph.canvas.scale(1.25, 1.25)
$(document).trigger(JIT.events.zoom, [event])
},
zoomOut: function(event) {
Visualize.mGraph.canvas.scale(0.8, 0.8)
$(document).trigger(JIT.events.zoom, [event])
},
centerMap: function(canvas) {
const offsetScale = canvas.scaleOffsetX
canvas.scale(1 / offsetScale, 1 / offsetScale)
const offsetX = canvas.translateOffsetX
const offsetY = canvas.translateOffsetY
canvas.translate(-1 * offsetX, -1 * offsetY)
},
zoomToBox: function(event) {
const sX = Mouse.boxStartCoordinates.x
const sY = Mouse.boxStartCoordinates.y
const eX = Mouse.boxEndCoordinates.x
const eY = Mouse.boxEndCoordinates.y
let canvas = Visualize.mGraph.canvas
JIT.centerMap(canvas)
let height = $(document).height()
let width = $(document).width()
let spanX = Math.abs(sX - eX)
let spanY = Math.abs(sY - eY)
let ratioX = width / spanX
let ratioY = height / spanY
let newRatio = Math.min(ratioX, ratioY)
if (canvas.scaleOffsetX * newRatio <= 5 && canvas.scaleOffsetX * newRatio >= 0.2) {
canvas.scale(newRatio, newRatio)
} else if (canvas.scaleOffsetX * newRatio > 5) {
newRatio = 5 / canvas.scaleOffsetX
canvas.scale(newRatio, newRatio)
} else {
newRatio = 0.2 / canvas.scaleOffsetX
canvas.scale(newRatio, newRatio)
}
const cogX = (sX + eX) / 2
const cogY = (sY + eY) / 2
canvas.translate(-1 * cogX, -1 * cogY)
$(document).trigger(JIT.events.zoom, [event])
Mouse.boxStartCoordinates = false
Mouse.boxEndCoordinates = false
Visualize.mGraph.plot()
},
zoomExtents: function(event, canvas, denySelected) {
JIT.centerMap(canvas)
let height = canvas.getSize().height
let width = canvas.getSize().width
let maxX
let maxY
let minX
let minY
let counter = 0
let nodes
if (!denySelected && Selected.Nodes.length > 0) {
nodes = Selected.Nodes
} else {
nodes = _.values(Visualize.mGraph.graph.nodes)
}
if (nodes.length > 1) {
nodes.forEach(function(n) {
let x = n.pos.x
let y = n.pos.y
if (counter === 0 && n.getData('alpha') === 1) {
maxX = x
minX = x
maxY = y
minY = y
}
let arrayOfLabelLines = Util.splitLine(n.name, 25).split('\n')
let dim = n.getData('dim')
let ctx = canvas.getCtx()
let height = 25 * arrayOfLabelLines.length
let lineWidths = []
for (let index = 0; index < arrayOfLabelLines.length; ++index) {
lineWidths.push(ctx.measureText(arrayOfLabelLines[index]).width)
}
let width = Math.max.apply(null, lineWidths) + 8
// only adjust these values if the node is not filtered
if (n.getData('alpha') === 1) {
maxX = Math.max(x + width / 2, maxX)
maxY = Math.max(y + n.getData('height') + 5 + height, maxY)
minX = Math.min(x - width / 2, minX)
minY = Math.min(y - dim, minY)
counter++
}
})
let spanX = maxX - minX
let spanY = maxY - minY
let ratioX = spanX / width
let ratioY = spanY / height
let cogX = (maxX + minX) / 2
let cogY = (maxY + minY) / 2
canvas.translate(-1 * cogX, -1 * cogY)
let newRatio = Math.max(ratioX, ratioY)
let scaleMultiplier = 1 / newRatio * 0.9
if (canvas.scaleOffsetX * scaleMultiplier <= 3 && canvas.scaleOffsetX * scaleMultiplier >= 0.2) {
canvas.scale(scaleMultiplier, scaleMultiplier)
} else if (canvas.scaleOffsetX * scaleMultiplier > 3) {
scaleMultiplier = 3 / canvas.scaleOffsetX
canvas.scale(scaleMultiplier, scaleMultiplier)
} else {
scaleMultiplier = 0.2 / canvas.scaleOffsetX
canvas.scale(scaleMultiplier, scaleMultiplier)
}
$(document).trigger(JIT.events.zoom, [event])
} else if (nodes.length === 1) {
nodes.forEach(function(n) {
const x = n.pos.x
const y = n.pos.y
canvas.translate(-1 * x, -1 * y)
$(document).trigger(JIT.events.zoom, [event])
})
}
}
}
export default JIT