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<template>
<div class="cpu-memory">
<svg :viewBox="`0 0 ${ viewBoxX } ${ viewBoxY }`" preserveAspectRatio="none">
<defs>
<linearGradient :id="cpuGradientId" x1="0" x2="0" y1="1" y2="0">
<stop offset="0%" stop-color="hsl(180, 80%, 70%)"></stop>
<stop offset="100%" stop-color="hsl(0, 80%, 70%)"></stop>
</linearGradient>
<mask :id="cpuMaskId" x="0" y="0" :width="viewBoxX" :height="viewBoxY">
<polygon
:points="cpuPolygonPoints"
fill="#fff"
fill-opacity="0.5"/>
<polyline
:points="cpuPolylinePoints"
fill="none"
stroke="#fff"
stroke-width="1"/>
</mask>
</defs>
<rect
x="-1" y="-1"
:width="viewBoxX + 2" :height="viewBoxY + 2"
:style="`stroke: none; fill: url(#${ cpuGradientId }); mask: url(#${ cpuMaskId })`"/>
<text x="1" y="5">CPU <tspan>{{ cpuP }}%</tspan></text>
</svg>
<svg :viewBox="`0 0 ${ viewBoxX } ${ viewBoxY }`" preserveAspectRatio="none">
<defs>
<linearGradient :id="memGradientId" x1="0" x2="0" y1="1" y2="0">
<stop offset="0%" stop-color="hsl(180, 80%, 70%)"></stop>
<stop offset="100%" stop-color="hsl(0, 80%, 70%)"></stop>
</linearGradient>
<mask :id="memMaskId" x="0" y="0" :width="viewBoxX" :height="viewBoxY">
<polygon
:points="memPolygonPoints"
fill="#fff"
fill-opacity="0.5"/>
<polyline
:points="memPolylinePoints"
fill="none"
stroke="#fff"
stroke-width="1"/>
</mask>
</defs>
<rect
x="-1" y="-1"
:width="viewBoxX + 2" :height="viewBoxY + 2"
:style="`stroke: none; fill: url(#${ memGradientId }); mask: url(#${ memMaskId })`"/>
<text x="1" y="5">MEM <tspan>{{ memP }}%</tspan></text>
</svg>
</div>
</template>
<script lang="ts">
import Vue from 'vue';
import * as uuid from 'uuid';
export default Vue.extend({
props: ['connection'],
data() {
return {
viewBoxX: 50,
viewBoxY: 30,
stats: [],
cpuGradientId: uuid(),
cpuMaskId: uuid(),
memGradientId: uuid(),
memMaskId: uuid(),
cpuPolylinePoints: '',
memPolylinePoints: '',
cpuPolygonPoints: '',
memPolygonPoints: '',
cpuP: '',
memP: ''
};
},
mounted() {
this.connection.on('stats', this.onStats);
},
beforeDestroy() {
this.connection.off('stats', this.onStats);
},
methods: {
onStats(stats) {
stats.mem.used = stats.mem.total - stats.mem.free;
this.stats.push(stats);
if (this.stats.length > 50) this.stats.shift();
this.cpuPolylinePoints = this.stats.map((s, i) => `${this.viewBoxX - ((this.stats.length - 1) - i)},${(1 - s.cpu_usage) * this.viewBoxY}`).join(' ');
this.memPolylinePoints = this.stats.map((s, i) => `${this.viewBoxX - ((this.stats.length - 1) - i)},${(1 - (s.mem.used / s.mem.total)) * this.viewBoxY}`).join(' ');
this.cpuPolygonPoints = `${this.viewBoxX - (this.stats.length - 1)},${ this.viewBoxY } ${ this.cpuPolylinePoints } ${ this.viewBoxX },${ this.viewBoxY }`;
this.memPolygonPoints = `${this.viewBoxX - (this.stats.length - 1)},${ this.viewBoxY } ${ this.memPolylinePoints } ${ this.viewBoxX },${ this.viewBoxY }`;
this.cpuP = (stats.cpu_usage * 100).toFixed(0);
this.memP = (stats.mem.used / stats.mem.total * 100).toFixed(0);
}
}
});
</script>
<style lang="stylus" scoped>
.cpu-memory
> svg
display block
padding 10px
width 50%
float left
&:first-child
padding-right 5px
&:last-child
padding-left 5px
> text
font-size 5px
fill rgba(0, 0, 0, 0.55)
> tspan
opacity 0.5
&:after
content ""
display block
clear both
</style>
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