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Add chart component prototypes #249

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merged 2 commits into from
Jan 30, 2023
Merged

Add chart component prototypes #249

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2dd5488
Create line chart component with dynamic props
DemogorGod Jan 23, 2023
0e98b0e
Add pie chart and setup dynamic inputs for all current charts
DemogorGod Jan 24, 2023
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4 changes: 2 additions & 2 deletions apps/web/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -16,8 +16,8 @@
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Casimir</title>
</head>
<body>
<div style="background: #d9d9d9; min-width: 360px; overflow: auto;">
<body style="overflow: hidden;">
<div>
<div id="app"></div>
</div>
<script type="module" src="/src/main.ts"></script>
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309 changes: 309 additions & 0 deletions apps/web/src/components/charts/LineChart.vue
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Original file line number Diff line number Diff line change
@@ -0,0 +1,309 @@
<script setup>
import { onMounted, watch } from 'vue'
import * as d3 from 'd3'

// eslint-disable-next-line no-undef, @typescript-eslint/no-unused-vars
const props = defineProps({
data: {
type: Array,
required: true
},
updateTooltipInfo: {
type: Function,
default: (e) => {
// console.log('hovering over: ', e)
}
},
yAxisValue: {
type: String,
required: true
},
xAxisValue: {
type: String,
required: true
},
xAxisFormat: {
type: Function,
required: true
},
yAxisFormat: {
type: Function,
required: true
},
// TD: for later versions create chart brushes and different tooltip styles
})

onMounted(() => {
let WIDTH = 0
let HEIGHT = 0
const svg_line_chart_container_el = document.getElementById('line_chart_container')

let line_chart_svg
let g
let x
let y

// Break points to show-hide axies
const width_breaking_point_small = 300
const height_breaking_point_small = 200

const width_breaking_point_medium = 500
const height_breaking_point_medium = 200

// for line tooltip
const bisectDate = d3.bisector(d => d[props.xAxisValue]).left


let xAxisCall
let xAxis


let yAxisCall
let yAxis



const updateChart = () => {
// Makes sure the axis are correct based on breakpoints
let xAxisRange = [0,(WIDTH - 30)]
let yAxisRange = [HEIGHT, 20]
if(WIDTH <= 150 ){
xAxisRange = [0, WIDTH]
} else if (HEIGHT <= height_breaking_point_small) {
xAxisRange = [0, WIDTH]
}

if(HEIGHT <= 150 ){
yAxisRange = [HEIGHT, 0]
} else if (WIDTH <= width_breaking_point_small) {
yAxisRange = [HEIGHT, 0]
}

x = d3.scaleTime().range(xAxisRange)
y = d3.scaleLinear().range(yAxisRange)


// dynamic x axis labeling based on width
if(WIDTH <= width_breaking_point_medium){
xAxisCall = d3.axisBottom()
.tickFormat((d, i) => {
if(i %2 === 0){
return props.xAxisFormat(d)
} else {
return ''
}
})
}else {
xAxisCall = d3.axisBottom()
.tickFormat(d => {
return props.xAxisFormat(d)
})
}

yAxisCall = d3.axisLeft()
if(!xAxis){
xAxis = g.append('g')
.attr('class', 'x axis')
.attr('transform', `translate(0, ${HEIGHT})`)
} else {
d3.select('#line_chart').select('svg').select('g').select('g')
.attr('class', 'x axis')
.attr('transform', `translate(0, ${HEIGHT})`)
}
if(!yAxis){
yAxis = g.append('g')
.attr('class', 'y axis')
} else {
d3.select('#line_chart').select('svg').select('g').select('g')
.attr('class', 'y axis')
}



const update = (data) => {
// Updates tooltip based on data on start
const lastDValue = d3.max(data, d => {
return d[props.yAxisValue]
})
props.updateTooltipInfo(lastDValue)
//

const yValue = props.yAxisValue

// 1.015 is just for adding a little bit of spacing for the y domain
x.domain(d3.extent(data, d => d[props.xAxisValue]))
y.domain([
d3.min(data, d => d[yValue]) / 1.015,
d3.max(data, d => d[yValue]) * 1.015
])

xAxisCall.scale(x)
xAxis.call(xAxisCall)

yAxisCall.scale(y)
yAxis.call(yAxisCall.tickFormat(d => props.yAxisFormat(d)))

// Tooltip

d3.select('.focus').remove()
d3.select('.overlay').remove()

const focus = g.append('g')
.attr('class', 'focus')
.style('display', 'none')

focus.append('line')
.attr('class', 'x-hover-line hover-line')
.attr('y1', 0)
.attr('y2', HEIGHT)

// focus.append('line')
// .attr('class', 'y-hover-line hover-line')
// .attr('x1', 0)
// .attr('x2', WIDTH)

focus.append('circle')
.attr('r', 2.5)
.attr('fill', '#0D5FFF')

focus.append('text')
.attr('x', 15)
.attr('dy', '.31em')
.attr('fill', '#0D5FFF')

g.append('rect')
.attr('class', 'overlay')
.attr('width', WIDTH)
.attr('height', HEIGHT)
.attr('fill', '#0D5FFF')
.on('mouseover', () => focus.style('display', null))
.on('mouseout', () => {
focus.style('display', 'none')
const lastDValue = d3.max(data, d => {
return d[props.yAxisValue]
})
props.updateTooltipInfo(lastDValue)
})
.on('mousemove', mousemove)

function mousemove(e) {
const x0 = x.invert(d3.pointer(e)[0])
const i = bisectDate(data, x0, 1)
const d0 = data[i - 1]
const d1 = data[i]
const d = x0 - d0[props.xAxisValue] > d1[props.xAxisValue] - x0 ? d1 : d0
focus.attr('transform', `translate(${x(d[props.xAxisValue])}, ${y(d[yValue])})`)
props.updateTooltipInfo(d[yValue])
focus.select('.x-hover-line').attr('y2', HEIGHT - y(d[yValue]))
focus.select('.y-hover-line').attr('x2', -x(d[props.xAxisValue]))
}

let line = d3.line()
.x(d => x(d[props.xAxisValue]))
.y(d => y(d[yValue]))

g.select('.line')
.transition(d3.transition().duration(500))
.attr('d', line(data))
}


watch(props, () => {
update(props.data)
})
if(props.data){
update(props.data)
}

}

const createViz = () => {

if(!line_chart_svg){
line_chart_svg = d3.select('#line_chart').append('svg')
.attr('viewBox', `0 0 ${WIDTH + 10} ${HEIGHT}`)
}else {
d3.select('#line_chart').select('svg')
.attr('viewBox', `0 0 ${WIDTH + 10} ${HEIGHT}`)
}


// shows axis labels if chart not <= small breaking point
// 150 being too small to show any labels
let xTransition = 30
let yTransition = -20
if(WIDTH <= 150 ){
xTransition = 0
} else if (HEIGHT <= height_breaking_point_small) {
xTransition = 0
}

if(HEIGHT <= 150 ){
yTransition = 0
} else if (WIDTH <= width_breaking_point_small) {
yTransition = 0
}


if(!g){
g = line_chart_svg.append('g')
.attr('transform', `translate(${
xTransition // hotizontal
}, ${
yTransition // vertical
})`)
g.append('path')
.attr('class', 'line')
.attr('width', WIDTH )
.attr('height', HEIGHT )
} else {
d3.select('#line_chart').select('svg').select('g')
.attr('transform', `translate(${
xTransition // hotizontal
}, ${
yTransition // vertical
})`)
d3.select('#line_chart').select('svg').select('g').select('path')
.attr('class', 'line')
.attr('width', WIDTH )
.attr('height', HEIGHT )
}

updateChart()
}


WIDTH = svg_line_chart_container_el.offsetWidth
HEIGHT = svg_line_chart_container_el.offsetHeight


// watches for size changes...
const outputsize = () => {
WIDTH = svg_line_chart_container_el.offsetWidth
HEIGHT = svg_line_chart_container_el.offsetHeight
createViz()
}
outputsize()
new ResizeObserver(outputsize).observe(svg_line_chart_container_el)

// Calls it on mounted without listening first
createViz()
})

</script>

<template>
<div
id="line_chart_container"
class="w-full h-full text-center align-middle"
>
<div
id="line_chart"
class="block m-auto h-full w-full"
/>
</div>
</template>

<style scoped>

</style>
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