Display annotations on hover

Technical Support WebViewer
1

WebViewer Version: 8.7.0

“No” to all of these questions:

  • Do you have an issue with a specific file(s)?
  • Can you reproduce using one of our samples or online demos?
  • Are you using the WebViewer server?
  • Does the issue only happen on certain browsers?
  • Is your issue related to a front-end framework?

Is your issue related to annotations? Yes

Is it possible to only display an annotation when hovering over a defined hit area within the WebViewer’s document?

2

You can control the visibility of each annotation: PDFTron Systems Inc. | Documentation. If you have an event, you can then toggle the visibility of the desired annotation.

3

Thanks, Andrey!

Regarding an event, would there be a way to detect if a user’s cursor is hovering / entered into a defined “hit area” within the document?

For example, we are looking to display a green circle annotation when the user’s cursor enters the pink box:

Screenshot_2022-11-21_at_1_32_04_PM
Screenshot_2022-11-21_at_1_32_04_PM1752×244 13.4 KB

The pink box would ideally be invisible to the end-user (and does not even need to be an actual annotation).

4

Here are the events available in DocumentViewer, some of them do contain coordinates from where this can be triggered: PDFTron WebViewer Class: DocumentViewer.

5

Oh cool, thanks! We’ll explore this direction.