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