How can chromium mutli-touch on Linux?

[M.Yamada]

I want to achieve multi-touch gesture(e.g. Pinch zoom)  on Linux with chromium of now (over version 30).

I 'm aware that it has not been implemented in Chromium now.

I found, Patch has been made​in the article of "https://chromiumcodereview.appspot.com/9773024", 

but it seems that was not implemented.

Those patches cannot be used for me. Because it different from the source of now.

Please someone advice me.

[Lei Zhang]

If you really want to try it out, checkout the source code from ~20
months ago and try applying the patch.

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[Sadrul Chowdhury]

On Tue, Dec 3, 2013 at 5:28 AM, M.Yamada <yama...@gmail.com> wrote:
> I want to achieve multi-touch gesture(e.g. Pinch zoom) on Linux with
> chromium of now (over version 30).
> I 'm aware that it has not been implemented in Chromium now.

In a future version (when we have linux-aura), multi-touch should work
reasonably OK (https://codereview.chromium.org/89413002/).

Sadrul

>
> I found, Patch has been madein the article of
> "https://chromiumcodereview.appspot.com/9773024",
> but it seems that was not implemented.
>
> Those patches cannot be used for me. Because it different from the source of
> now.
>
> Please someone advice me.
>

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[M.Yamada]

Hi, Lei 

I will try version 19.0.1060.0 .

I guess that it version is the version of the page of "Issue 9773024" nearly.

Thank you for your advice.

2013年12月4日水曜日 5時10分05秒 UTC+9 Lei Zhang:

[M.Yamada]

Hi Sadrul.

Do you try the implementation of multi-touch on Linux/X11 now?

Can it be due to do a Pinch Zoom/Out, Flick, and Pain?

It is great if so.

M.Yamada

2013年12月4日水曜日 6時11分04秒 UTC+9 Sadrul Chowdhury:

[M.Yamada]

Hi Sadrul Chowdhury

Congratulations  closed Issue 89413002: linux aura: Support touch events. 

I got source, and I will build.

Please, tell me.

What options gyp_chromium will be required?

I attached the following options.

Is there anything else ?

./build/gyp_chromium -D component=shared_library -D disable_nacl=1 -D werror="" -D use_aura=1

Thanks

  M.Yamada

2013年12月4日水曜日 10時24分18秒 UTC+9 M.Yamada:

[Sadrul Chowdhury]

On Fri, Dec 6, 2013 at 4:26 AM, M.Yamada <yama...@gmail.com> wrote:
> Hi Sadrul Chowdhury
>
> Congratulations closed Issue 89413002: linux aura: Support touch events.
>
> I got source, and I will build.
>
> Please, tell me.
> What options gyp_chromium will be required?
> I attached the following options.
> Is there anything else ?
>
> ./build/gyp_chromium -D component=shared_library -D disable_nacl=1 -D
> werror="" -D use_aura=1

That should be sufficient. You may need to add
'--touch-events=enabled' flag when running chromium.

Sadrul

[M.Yamada]

Hi, Sadrul Chowdhury.

Thank you for the reply.

I really appreciate it.

I built the chroium, and  I ran chroium with the option of following the chromium.

  ./chrome --touch-events=enabled

But, Multi-touch is not running in my environment yet.

My environment:

  OS is ubuntu 12.04 LTS

  In I'm using a touch panel monitor.

INPUT DEVICE of the touch panel is assigned to /dev/input/event5.

It exists.

The mouse cursor moves to the position that touched when I touch the touch panel.

However, link or button does not respond.

When I browse the site of http://www.rbyers.net/eventTest.html, Events mousedown, mousemove, mouseup, scroll occurs.

However touch event does not occur.

Maybe my environment is bad or different.

Please tell me an advice.

Thank you.

2013年12月6日金曜日 18時34分10秒 UTC+9 Sadrul Chowdhury:

[Sadrul Chowdhury]

On Sun, Dec 8, 2013 at 10:41 PM, M.Yamada <yama...@gmail.com> wrote:
> Hi, Sadrul Chowdhury.
>
> Thank you for the reply.
> I really appreciate it.
>
> I built the chroium, and I ran chroium with the option of following the
> chromium.
> ./chrome --touch-events=enabled
>
> But, Multi-touch is not running in my environment yet.
>
> My environment:
> OS is ubuntu 12.04 LTS
> In I'm using a touch panel monitor.
>
> INPUT DEVICE of the touch panel is assigned to /dev/input/event5.
> It exists.

What if you make the touchscreen a floating slave device instead?

To do this: run the 'xinput list' command, it will print something like:

⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Logitech USB Optical Mouse id=8 [slave pointer (2)]
⎜ ↳ <touch-screen name> id=10
[slave pointer (2)]

You would then run 'xinput float 10' (the id for the touchscreen
listed above). This should get the touch-events working in chrome.
However, I understand this breaks interacting with other apps using
the touchscreen. I have filed http://crbug.com/327224 to keep track of
this. (you can run 'xinput reattach 10 2' to undo the change made from
'xinput float 10').

Sadrul

[M.Yamada]

Hi, Sadrul Chowdhury. 

I changed touchscreen device form 'slave pointer' to 'floating slave'.

And then the Chromium was to be able to touch.

And I added switch( '--enable-pinch' ) of startup of Chromium.

Chromium was able to Pinch zoom.

My startup command of Chromium:

./chrome --touch-events=enabled --enable-pinch

I am very glad. 

It is due to your contribution.

Thank you.

My next step,  I would like to run on ARM CPU board. (OS is ubuntu)

However, to cross-compile it is tough.

I hope that it provides a chrome latest version for ARM at site somewhere.

I will do my best to cross-compilation.

Thanks.

2013年12月10日火曜日 12時23分22秒 UTC+9 Sadrul Chowdhury: