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<!--
- Copyright 2014-2018 the original author or authors.
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
-->
<template>
<div class="threads-chart">
<svg class="threads-chart__svg"/>
</div>
</template>
<script>
import d3 from '@/utils/d3';
import moment from 'moment';
export default {
props: {
data: {
type: Array,
default: () => []
}
},
methods: {
drawChart(_data) {
const vm = this;
const data = _data.length === 1 ? _data.concat([{..._data[0], timestamp: _data[0].timestamp + 1}]) : _data;
///setup x and y scale
const extent = d3.extent(data, d => d.timestamp);
const x = d3.scaleTime()
.range([0, vm.width])
.domain(extent);
const y = d3.scaleLinear()
.range([vm.height, 0])
.domain([0, d3.max(data, d => d.live) * 1.05]);
//draw max
const live = vm.areas.selectAll('.threads-chart__area--live')
.data([data]);
live.enter().append('path')
.merge(live)
.attr('class', 'threads-chart__area--live')
.attr('d', d3.area()
.x(d => x(d.timestamp))
.y0(d => y(d.daemon))
.y1(d => y(d.live)));
live.exit().remove();
//draw areas
const daemon = vm.areas.selectAll('.threads-chart__area--daemon')
.data([data]);
daemon.enter().append('path')
.merge(daemon)
.attr('class', 'threads-chart__area--daemon')
.attr('d', d3.area()
.x(d => x(d.timestamp))
.y0(y(0))
.y1(d => y(d.daemon)));
daemon.exit().remove();
//draw axis
vm.xAxis.call(d3.axisBottom(x)
.ticks(5)
.tickFormat(d => moment(d).format('HH:mm:ss'))
);
vm.yAxis.call(d3.axisLeft(y)
.ticks(5)
);
},
},
mounted() {
const margin = {
top: 5,
right: 5,
bottom: 30,
left: 50,
};
this.width = this.$el.getBoundingClientRect().width - margin.left - margin.right;
this.height = this.$el.getBoundingClientRect().height - margin.top - margin.bottom;
this.chartLayer = d3.select(this.$el.querySelector('.threads-chart__svg'))
.append('g')
.attr('transform', `translate(${margin.left},${margin.top})`);
this.xAxis = this.chartLayer.append('g')
.attr('class', 'threads-chart__axis-x')
.attr('transform', `translate(0,${this.height})`);
this.yAxis = this.chartLayer.append('g')
.attr('class', 'threads-chart__axis-y')
.attr('stroke', null);
this.areas = this.chartLayer.append('g');
this.drawChart(this.data);
},
watch: {
data(newVal) {
this.drawChart(newVal);
}
}
}
</script>
<style lang="scss">
@import "~@/assets/css/utilities";
.threads-chart {
&__svg {
height: 159px;
width: 100%;
}
&__area {
&--live {
fill: $warning;
opacity: 0.8;
}
&--daemon {
fill: $info;
opacity: 0.8;
}
}
}
</style>