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Document tooltip draw hooks and only call hooks when the tooltip draws (#10276)

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* Document tooltip draw hooks and only call hooks when the tooltip draws

* Update tests
This commit is contained in:
Evert Timberg
2022-04-03 10:09:46 -04:00
committed by GitHub
parent 09128947d5
commit 43889f247c
4 changed files with 20 additions and 12 deletions
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26
src/plugins/plugin.tooltip.js
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@@ -917,6 +917,14 @@ export class Tooltip extends Element {
}
}
/**
* Determine if the tooltip will draw anything
* @returns {boolean} True if the tooltip will render
*/
_willRender() {
return !!this.opacity;
}
draw(ctx) {
const options = this.options.setContext(this.getContext());
let opacity = this.opacity;
@@ -1127,19 +1135,19 @@ export default {
afterDraw(chart) {
const tooltip = chart.tooltip;
const args = {
tooltip
};
if (tooltip && tooltip._willRender()) {
const args = {
tooltip
};
if (chart.notifyPlugins('beforeTooltipDraw', args) === false) {
return;
}
if (chart.notifyPlugins('beforeTooltipDraw', args) === false) {
return;
}
if (tooltip) {
tooltip.draw(chart.ctx);
}
chart.notifyPlugins('afterTooltipDraw', args);
chart.notifyPlugins('afterTooltipDraw', args);
}
},
afterEvent(chart, args) {