* Refactor get...Items functions to take events rather than positions
To work toward exposing something like the get...Items functions.
* Switch getAxisItems to use optimizedEvaluateItems
optimizedEvaluateItems falls back to evaluating all items for unsorted items, and sorting / optimizing ought to be okay, so this ought to be equivalent.
* Performance
* Consolidate getRelativePosition
helpers.dom.js's getRelativePosition already had logic to handle ChartEvent vs. Event (as demonstrated by the `native` check within `getCanvasPosition`), so it's redundant for core.interaction.js to have its own `native` check.
Update `getRelativePosition` to use the same `native` check as core.interaction.js's version. As best as I can tell, the ChartEvent's x and y are populated from `getRelativePosition`, so the previous `getCanvasPosition` was effectively just duplicating `getRelativePosition'`s work. I added a test to verify this; it depends on a local, not-yet-submitted change in chartjs-test-utils' `triggerMouseEvent` to return the mouse event that it triggers.
* Add an API to refactor duplicate isPointInArea
* Rename and update JSDoc to prepare for making this public
* Give functions a consistent, generic interface
* Export functions for discussion
* Code review feedback
Add a non-null assertion, as requested in code review.
Add JSDoc to clarify that `getCanvasPosition` now expects a native `Event`, not a `ChartEvent`. Add `@ts-ignore`; `getCanvasPosition` relied on some loose conversions between `Event`, `TouchEvent`, and `Touch` that would require several changes to make TypeScript happy.
* Code review feedback
Return the event directly, to speed up the code a bit. Add JSDoc to help communicate its intent. Update various comments.
* Finalize exports; add docs and TypeScript
* Update src/helpers/helpers.dom.js
* Update src/helpers/helpers.dom.js
Only thing needed actually is the update of chartjs-test-utils to 0.4.0
* Bump chartjs-test-utils dependency
To get supporting work from https://github.com/chartjs/chartjs-test-utils/pull/19
Co-authored-by: Jukka Kurkela <jukka.kurkela@gmail.com>
The controller.bar/not-grouped/on-time test was failing on my computer because the date ranges happen to cross the end of Daylight Saving Time in the U.S., so chart was generated with one more hour of time than the test fixture expected.
Using moment-timezone to specify a fixed time zone with no DST seemed like the most robust fix. (Alternatively, I could pick a date range that doesn't change DST; that ought to work.)
