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import h337 from "heatmap.js"
namespace Clicks {
export type ClickEvent = {
x: number
y: number
tag: string
}
export type UrlEvent = {
url: string
}
export type Event = ClickEvent | UrlEvent
export interface Format {
format: string
version: string
width: number
height: number
brands: string
events: Event[]
}
}
class PageData {
readonly url: string
readonly width: number
readonly data: h337.HeatmapData<h337.DataPoint>
constructor(url: string, width: number, data: h337.DataPoint[]) {
this.url = url
this.width = width
let maxValue = 0
for (const d of data) {
if (d.value > maxValue) maxValue = d.value
}
this.data = {
data: data,
min: 0,
max: maxValue,
}
}
}
class Display {
private status: HTMLElement
private frame_container: HTMLElement
private frame: HTMLIFrameElement
private heatmap: HTMLElement
private data: PageData[] | undefined
private map: h337.Heatmap<"value", "x", "y">
constructor() {
this.status = document.getElementById("status")!!
this.frame_container = document.getElementById("frame_container")!!
this.frame = document.getElementById("frame")!! as HTMLIFrameElement
this.heatmap = document.getElementById("heatmap")!!
this.map = h337.create({
container: this.heatmap,
})
}
loadFile(file: File) {
this.setStatus("Loading...")
const reader = new FileReader()
reader.addEventListener("load", () => {
const data = JSON.parse(reader.result as string) as Clicks.Format
if (data.format !== "clicks" || data.version !== "1.0") {
this.setStatus("Unknown format")
return
}
this.data = []
const scaleX = data.width
const scaleY = data.width
let url: string | undefined
let clicks: h337.DataPoint[] = []
let map = new Map<string, number>()
for (const event of data.events) {
if ("url" in event) {
if (url !== undefined) {
console.log(clicks)
this.data.push(new PageData(url, data.width, clicks))
}
url = event.url
clicks = []
map.clear()
} else {
const ce = event as Clicks.ClickEvent
const x = Math.round(ce.x * scaleX)
const y = Math.round(ce.y * scaleY)
const pos = `${x}x${y}`
const index = map.get(pos)
if (index === undefined) {
map.set(pos, clicks!!.length)
clicks.push({ x: x, y: y, value: 1 })
} else {
clicks[index].value++
}
}
}
if (url !== undefined) {
console.log(clicks)
this.data.push(new PageData(url, data.width, clicks))
}
this.setStatus("Loaded")
if (this.data.length > 0) this.show(this.data[0])
})
reader.readAsText(file)
}
private setStatus(newStatus: string) {
this.status.innerText = newStatus
}
private show(data: PageData) {
this.frame_container.style.width = `${data.width}px`
this.frame.src = data.url
this.heatmap.style.transform = "translateY(0px)"
this.frame.addEventListener("load", () => {
this.frame.contentDocument?.addEventListener("scroll", () => {
const y = this.frame.contentDocument!!.documentElement.scrollTop
this.heatmap.style.transform = `translateY(${-y}px)`
})
})
this.map.setData(data.data)
}
}
document.addEventListener("DOMContentLoaded", () => {
const file = document.getElementById("file")
const display = new Display()
file?.addEventListener("change", (event: Event) => {
const files = (event.target as HTMLInputElement | null)!!.files
if (files === null) return
if (files.length > 0) {
display.loadFile(files[0])
}
})
})
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