Huanyuyuehui/components/ucharts/component.vue

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<template>
<canvas v-if="canvasId" :id="canvasId" :canvasId="canvasId" :style="{'width':cWidth*pixelRatio+'px','height':cHeight*pixelRatio+'px', 'transform': 'scale('+(1/pixelRatio)+')','margin-left':-cWidth*(pixelRatio-1)/2+'px','margin-top':-cHeight*(pixelRatio-1)/2+'px'}"
@touchstart="touchStart" @touchmove="touchMove" @touchend="touchEnd" @error="error">
</canvas>
</template>
<script>
import uCharts from './u-charts.js';
var canvases = {};
export default {
props: {
chartType: {
required: true,
type: String,
default: 'column'
},
opts: {
required: true,
type: Object,
default () {
return null;
},
},
canvasId: {
type: String,
default: 'u-canvas',
},
cWidth: {
default: 375,
},
cHeight: {
default: 250,
},
pixelRatio: {
type: Number,
default: 1,
},
},
mounted() {
this.init();
},
methods: {
init() {
switch (this.chartType) {
case 'column':
this.initColumnChart();
break;
case 'line':
this.initLineChart();
break;
default:
break;
}
},
initColumnChart() {
canvases[this.canvasId] = new uCharts({
$this: this,
canvasId: this.canvasId,
type: 'column',
legend: true,
fontSize: 11,
background: '#FFFFFF',
pixelRatio: this.pixelRatio,
animation: true,
categories: this.opts.categories,
series: this.opts.series,
enableScroll: true,
xAxis: {
disableGrid: true,
itemCount: 4,
scrollShow: true
},
yAxis: {
//disabled:true
},
dataLabel: true,
width: this.cWidth * this.pixelRatio,
height: this.cHeight * this.pixelRatio,
extra: {
column: {
type: 'group',
}
}
});
},
initLineChart() {
canvases[this.canvasId] = new uCharts({
$this: this,
canvasId: this.canvasId,
type: 'line',
fontSize: 11,
legend: true,
dataLabel: false,
dataPointShape: true,
background: '#FFFFFF',
pixelRatio: this.pixelRatio,
categories: this.opts.categories,
series: this.opts.series,
animation: true,
enableScroll: true,
xAxis: {
type: 'grid',
gridColor: '#CCCCCC',
gridType: 'dash',
dashLength: 8,
itemCount: 4,
scrollShow: true
},
yAxis: {
gridType: 'dash',
gridColor: '#CCCCCC',
dashLength: 8,
splitNumber: 5,
min: 10,
max: 180,
format: (val) => {
return val.toFixed(0) + '元'
}
},
width: this.cWidth * this.pixelRatio,
height: this.cHeight * this.pixelRatio,
extra: {
line: {
type: 'straight'
}
}
});
},
// 这里仅作为示例传入两个参数cid为canvas-id,newdata为更新的数据需要更多参数请自行修改
changeData(cid,newdata) {
canvases[cid].updateData({
series: newdata.series,
categories: newdata.categories
});
},
touchStart(e) {
canvases[this.canvasId].showToolTip(e, {
format: function(item, category) {
return category + ' ' + item.name + ':' + item.data
}
});
canvases[this.canvasId].scrollStart(e);
},
touchMove(e) {
canvases[this.canvasId].scroll(e);
},
touchEnd(e) {
canvases[this.canvasId].scrollEnd(e);
},
error(e) {}
},
};
</script>
<style scoped>
.charts {
width: 100%;
height: 100%;
flex: 1;
background-color: #FFFFFF;
}
</style>