On Mon, 8 May 2023 12:22:17 GMT, Karthik P K <k...@openjdk.org> wrote:
>> Since surrogate pairs are internally considered as 2 characters and text >> field is null in `HitInfo` when `getInsertionIndex` is invoked from >> `TextFlow`, wrong insertion index was returned. >> >> Updated code to calculate insertion index in `getHitInfo` method of >> `PrismTextLayout` class when `hitTest` of trailing side of surrogate pair is >> requested. Since text runs are processed in this method already, calculating >> the insertion index in this method looks better than calculating in >> `getInsertionIndex` of `HitInfo` method. >> The latter approach also requires the text to be sent to `HitInfo` as >> parameter from the `hitTest` method of `TextFlow`. If the number of `Text` >> nodes in `TextFlow` are very large, processing all the `Text` nodes on each >> `hitTest` method invocation might cause performance issue. Hence implemented >> first approach. >> >> Added system test to validate the fix. > > Karthik P K has updated the pull request incrementally with one additional > commit since the last revision: > > Fix insertion index calculation issue with emojis. Add additional test cases Does not seem to work correctly still - the insertion index in TextFlow should not point in between surrogate pair of characters that comprise an emoji. Basically, it should be exactly the same as with Text.hitInfo():  ------------- PR Comment: https://git.openjdk.org/jfx/pull/1091#issuecomment-1538697285
