58 lines
1.5 KiB
TypeScript
58 lines
1.5 KiB
TypeScript
import { onUnmounted, onDeactivated, ref } from 'vue';
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import * as os from '@/os';
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import MkChartTooltip from '@/components/MkChartTooltip.vue';
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export function useChartTooltip(opts: { position: 'top' | 'middle' } = { position: 'top' }) {
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const tooltipShowing = ref(false);
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const tooltipX = ref(0);
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const tooltipY = ref(0);
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const tooltipTitle = ref(null);
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const tooltipSeries = ref(null);
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let disposeTooltipComponent;
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os.popup(MkChartTooltip, {
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showing: tooltipShowing,
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x: tooltipX,
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y: tooltipY,
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title: tooltipTitle,
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series: tooltipSeries,
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}, {}).then(({ dispose }) => {
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disposeTooltipComponent = dispose;
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});
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onUnmounted(() => {
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if (disposeTooltipComponent) disposeTooltipComponent();
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});
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onDeactivated(() => {
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tooltipShowing.value = false;
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});
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function handler(context) {
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if (context.tooltip.opacity === 0) {
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tooltipShowing.value = false;
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return;
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}
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tooltipTitle.value = context.tooltip.title[0];
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tooltipSeries.value = context.tooltip.body.map((b, i) => ({
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backgroundColor: context.tooltip.labelColors[i].backgroundColor,
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borderColor: context.tooltip.labelColors[i].borderColor,
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text: b.lines[0],
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}));
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const rect = context.chart.canvas.getBoundingClientRect();
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tooltipShowing.value = true;
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tooltipX.value = rect.left + window.pageXOffset + context.tooltip.caretX;
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if (opts.position === 'top') {
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tooltipY.value = rect.top + window.pageYOffset;
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} else if (opts.position === 'middle') {
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tooltipY.value = rect.top + window.pageYOffset + context.tooltip.caretY;
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}
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}
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return {
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handler,
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};
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}
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