1071969 - Remove the mask layer check requirement from the event regions API

Status: NEW

(Core :: Layout, defect)

Description

[Kartikaya Gupta (email:[e-mail])]

After some discussion about the event regions API, we decided it would be better to remove the mask layer hit-test requirement [1] from the event regions API. Instead, any areas in the mask layer that would prevent the input event from getting dispatched to the layer should instead be included in the dispatch-to-content region of the layer.

The main reason for this is that doing a hit-test on the mask layer is nontrivial performance-wise and also will take a lot of work. We also don't expect this scenario to get hit a lot in practice anyway.

[1] http://mxr.mozilla.org/mozilla-central/source/gfx/layers/Layers.h?rev=0a53e55db53d#895

Comment 1

[Kartikaya Gupta (email:[e-mail])]

Gonna tag this as correctness because right now it's still in the event regions API, and it hasn't been implemented on the compositor side.