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Issue 834036 link

Starred by 1 user
Status: Started
Owner:
riajiang@chromium.org
Cc:
rjkroege@chromium.org
sadrul@chromium.org
█ gklassen@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug

Blocking:
issue 732400



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Add an API to HitTestQuery to get the transform from root to target

Project Member Reported by riajiang@chromium.org, Apr 17 2018 
need to add an API to HitTestQuery to get the transform from root to target:

1) we don't always have the entire ancestor array to a given target
2) sometimes we want transform between two views, not only from root
Project Member

Comment 1 by bugdroid1@chromium.org, Apr 19 2018 

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a7fb65b37ee697d7d0a44534a24eab24ee5d833c

commit a7fb65b37ee697d7d0a44534a24eab24ee5d833c
Author: Ria Jiang <riajiang@chromium.org>
Date: Thu Apr 19 06:39:04 2018

Add an API to HitTestQuery to get the transform from root to target.

Add an API to HitTestQuery to get the transform from root to target in
physical pixels. The transform is a matrix A such that for a point P in
the root coordinate system, A*P -> P' where P' is in the target
coordinate system.

Bug: 834036
Test: viz_unittests
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel
Change-Id: I7fa4ec9728966b25637759b46f43c01db3bb4008
Reviewed-on: https://chromium-review.googlesource.com/1015789
Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Reviewed-by: Robert Kroeger <rjkroege@chromium.org>
Commit-Queue: Ria Jiang <riajiang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#551957}
[modify] https://crrev.com/a7fb65b37ee697d7d0a44534a24eab24ee5d833c/components/viz/host/hit_test/hit_test_query.cc
[modify] https://crrev.com/a7fb65b37ee697d7d0a44534a24eab24ee5d833c/components/viz/host/hit_test/hit_test_query.h
[modify] https://crrev.com/a7fb65b37ee697d7d0a44534a24eab24ee5d833c/components/viz/host/hit_test/hit_test_query_unittest.cc
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