tree 59e2a4b87591665ce5b60b5b5be8ea07ed52cbbf
parent f2e360103af473a0b121cea329e74f05fc274b52
author Lei Zhang <thestig@chromium.org> 1586837177 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1586837177 +0000

Add FORM_OnMouseWheel().

PDFium has scroll wheel support internally in many form widget
implementations, but none of it is hooked up via a public API.

Add an experimental public API and hook it up to pdfium_test. In
pdfium_test, add a way to specify wheel events using the following
syntax:

mousewheel,pointer_x,pointer_y,delta_x,delta_y[,modifiers]

Use the new event to test scrolling a list widget in a pixel test.

Bug: pdfium:1452
Change-Id: I87f40243399aa79b50177e8b833e4504becc8039
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/68470
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>