890878 - Support DirectManipulation on Windows

Status: RESOLVED WORKSFORME

(Core :: Widget: Win32, enhancement, P4)

Description

[Josh Tumath]

The DirectManipulation APIs in DirectX 11 allow very responsive touch and trackpad interactions when scrolling, zooming and dragging and dropping.

This will be needed in Gecko for both Metro Firefox and desktop Firefox on Windows 8 to improve the user experience for touch interaction.

Comment 2

[Asif Youssuff]

FWIW, this is starting to land in Chromium: https://chromium-review.googlesource.com/c/chromium/src/+/653581/

Comment 3

[Markus Stange [:mstange]]

Thanks for the pointer! So they create a viewport with a fake 1000x1000 scrollable which they reset after every gesture, and then convert any changes to the content's transform that they detect in OnContentUpdated into fake mouse wheel events.

Comment 4

[Brian Misiak]

Microsoft Edge has a flawless implementation of this for a long time. They put a lot of thought into smooth scrolling. They don't even fire mouse wheel events to ensure javascript doesn't interfere with 60fps scrolling:
https://blogs.windows.com/msedgedev/2017/12/07/better-precision-touchpad-experience-ptp-pointer-events/

Comment 5

[u611360]

Any updates on this? Firefox Quantum has hit ESR and yet there's no precision touchpad support.

Comment 6

[Timothy Nikkel (:tnikkel)]

An implementation has landed behind the pref apz.windows.use_direct_manipulation, it's on nightly for now. It's mainly intended to be used in conjunction with apz.allow_zooming. If anyone finds issues with it please let me know.

Comment 7

[Poopooracoocoo]

I thought that allow zooming would also work on touchpads with use direct manipulation. So first bug: scrolling in the menu with my touchpad instantly closes it. I haven't noticed anything other than that. I also thought that it'd change the scrolling altogether :| my fault for having such high hopes lol

Comment 8

[Timothy Nikkel (:tnikkel)]

(In reply to Poopooracoocoo from comment #7)

I thought that allow zooming would also work on touchpads with use direct manipulation. So first bug: scrolling in the menu with my touchpad instantly closes it. I haven't noticed anything other than that. I also thought that it'd change the scrolling altogether :| my fault for having such high hopes lol

Would you mind filing a bug for that?

Comment 9

[Timothy Nikkel (:tnikkel)]

(In reply to Timothy Nikkel (:tnikkel) from comment #8)

(In reply to Poopooracoocoo from comment #7)

I thought that allow zooming would also work on touchpads with use direct manipulation. So first bug: scrolling in the menu with my touchpad instantly closes it. I haven't noticed anything other than that. I also thought that it'd change the scrolling altogether :| my fault for having such high hopes lol

Would you mind filing a bug for that?

I filed bug 1647546. Thanks for reporting.

Comment 10

[Poopooracoocoo]

Will you guys be working on the scrolling personality sometime soon too or is that for another time?

Comment 11

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

(In reply to Poopooracoocoo from comment #10)

Will you guys be working on the scrolling personality sometime soon too or is that for another time?

Not explicitly. If there are particular aspects to the current scroll personality you don't like feel free to file specific bugs for them.

Comment 12

[Poopooracoocoo]

I have no idea how scrolling works. I just know that it's not as nice as the scrolling in UWP apps. There's also elastic overscrolling, for which there's a bug filed for already.

Comment 13

[Winson Wen]

Not sure when, but apz.windows.use_direct_manipulation appears to be enabled by default on release now. Can this bug be closed?

Comment 14

[Marco Castelluccio [:marco]]

This was enabled by default on release in bug 1671235.