985886 - Disable the `touchmove` fast path when showing touches in the System App

Status: RESOLVED WONTFIX

(Firefox OS Graveyard :: Gaia::Settings, defect)

Description

[Jan Keromnes [:janx]]

Bug #965293 introduces a layer that visually shows touch interactions with the device. However, except in some cases only `touchstart` and `touchend` events can be tracked by the System App, because there is a fast path making `touchmove` events bypass the System App. The effect is that in most cases, a touch event is shown where it started, and stays in that position until the finger leaves the screen, even if the finger moved.

Bug #964904 introduces a pref to disable that fast path. We should flip it when showing touch events, so that touch positions can be updated.

Comment 1

[Jan Keromnes [:janx]]

Attachment: Disable the `touchmove` fast path when showing touches in the System App. r=21

Comment 2

[Jan Keromnes [:janx]]

Disabling the `touchmove` fast path causes some problems in Firefox OS' homescreen (scrolling horizontally becomes erratic and difficult). This will need to be investigate prior to moving forward with the patch.

Comment 3

[Jan Keromnes [:janx]]

Attachment: Disable the `touchmove` fast path when showing touches in the System App. r=21

Comment 4

[Jan Keromnes [:janx]]

New version of the patch using the simple mapping.

Comment 5

[Jan Keromnes [:janx]]

Attachment: Disable the `touchmove` fast path when showing touches in the System App. r=21

Comment 6

[Jan Keromnes [:janx]]

Attachment: Disable the `touchmove` fast path when showing touches in the System App. r=21

Comment 7

[BMO Automation]

Firefox OS is not being worked on